ippicv: install third-party-programs.txt file

OpenCV version '-openvino'
2026-07-25 13:23:02 +04:00 · 2020-09-26 01:15:49 +03:00 · 2020-09-08 14:35:57 +03:00
1440 changed files with 20198 additions and 102742 deletions
@@ -1,10 +1,3 @@
-<!--
-If you have a question rather than reporting a bug please go to https://forum.opencv.org where you get much faster responses.
-If you need further assistance please read [How To Contribute](https://github.com/opencv/opencv/wiki/How_to_contribute).
-
-This is a template helping you to create an issue which can be processed as quickly as possible. This is the bug reporting section for the OpenCV library.
-->
-
 ##### System information (version)
 <!-- Example
 - OpenCV => 4.2
@@ -33,17 +26,17 @@ This is a template helping you to create an issue which can be processed as quic

 - [ ] I report the issue, it's not a question
   <!--
-   OpenCV team works with forum.opencv.org, Stack Overflow and other communities
+   OpenCV team works with answers.opencv.org, Stack Overflow and other communities
   to discuss problems. Tickets with question without real issue statement will be
   closed.
   -->
 - [ ] I checked the problem with documentation, FAQ, open issues,
-       forum.opencv.org, Stack Overflow, etc and have not found solution
+       answers.opencv.org, Stack Overflow, etc and have not found solution
   <!--
   Places to check:
   * OpenCV documentation: https://docs.opencv.org
   * FAQ page: https://github.com/opencv/opencv/wiki/FAQ
-   * OpenCV forum: https://forum.opencv.org
+   * OpenCV forum: https://answers.opencv.org
   * OpenCV issue tracker: https://github.com/opencv/opencv/issues?q=is%3Aissue
   * Stack Overflow branch: https://stackoverflow.com/questions/tagged/opencv
   -->
@@ -1,6 +1,6 @@
 name: arm64 build checks

-on: workflow_dispatch
+on: [pull_request]

 jobs:
  build:
@@ -27,7 +27,7 @@ if(CMAKE_COMPILER_IS_GNUCC)
    endif()
 endif()

-add_library(carotene_objs OBJECT EXCLUDE_FROM_ALL
+add_library(carotene_objs OBJECT
  ${carotene_headers}
  ${carotene_sources}
 )
@@ -41,4 +41,4 @@ if(WITH_NEON)
 endif()

 # we add dummy file to fix XCode build
-add_library(carotene STATIC ${OPENCV_3RDPARTY_EXCLUDE_FROM_ALL} "$<TARGET_OBJECTS:carotene_objs>" "${CAROTENE_SOURCE_DIR}/dummy.cpp")
+add_library(carotene STATIC EXCLUDE_FROM_ALL "$<TARGET_OBJECTS:carotene_objs>" "${CAROTENE_SOURCE_DIR}/dummy.cpp")
@@ -758,7 +758,7 @@ inline void resizeAreaRounding(const Size2D &ssize, const Size2D &dsize,
    }
    else if (channels == 3)
    {
-        if ((wr == 2.0f) && (hr == 2.0f))
+        if ((wr == 2.0f) && (wr == 2.0f))
        {
 #ifndef __ANDROID__
            size_t roiw16 = dsize.width >= 15 ? (dsize.width - 15) * 3 : 0;
@@ -14,7 +14,7 @@ if(NOT DEFINED CPUFEATURES_SOURCES)
 endif()

 include_directories(${CPUFEATURES_INCLUDE_DIRS})
-add_library(${OPENCV_CPUFEATURES_TARGET_NAME} STATIC ${OPENCV_3RDPARTY_EXCLUDE_FROM_ALL} ${CPUFEATURES_SOURCES})
+add_library(${OPENCV_CPUFEATURES_TARGET_NAME} STATIC ${CPUFEATURES_SOURCES})

 set_target_properties(${OPENCV_CPUFEATURES_TARGET_NAME}
  PROPERTIES OUTPUT_NAME cpufeatures
@@ -29,7 +29,7 @@ if(ENABLE_SOLUTION_FOLDERS)
 endif()

 if(NOT BUILD_SHARED_LIBS)
-  ocv_install_target(${OPENCV_CPUFEATURES_TARGET_NAME} EXPORT OpenCVModules ARCHIVE DESTINATION ${OPENCV_3P_LIB_INSTALL_PATH} COMPONENT dev OPTIONAL)
+  ocv_install_target(${OPENCV_CPUFEATURES_TARGET_NAME} EXPORT OpenCVModules ARCHIVE DESTINATION ${OPENCV_3P_LIB_INSTALL_PATH} COMPONENT dev)
 endif()

 ocv_install_3rdparty_licenses(cpufeatures LICENSE README.md)
@@ -1,8 +1,8 @@
-# Binaries branch name: ffmpeg/master_20210303
-# Binaries were created for OpenCV: 7ac6abe02a33bef445a5b77214ad31964e2c5cc1
-ocv_update(FFMPEG_BINARIES_COMMIT "629590c3ba09fb0c8eaa9ab858ff13d3a84ca1aa")
-ocv_update(FFMPEG_FILE_HASH_BIN32 "638065d5a0dab8a828879942375dcac4")
-ocv_update(FFMPEG_FILE_HASH_BIN64 "7f10ae2e6a080ba3714f7a38ee03ae15")
+# Binaries branch name: ffmpeg/master_20200908
+# Binaries were created for OpenCV: f445b826d084188077a5e9d204c4c33d1589f380
+ocv_update(FFMPEG_BINARIES_COMMIT "6152e132572dfdaa32887eabeb7199bef49b14dc")
+ocv_update(FFMPEG_FILE_HASH_BIN32 "37e2dadf776631acc8856e281f29cf42")
+ocv_update(FFMPEG_FILE_HASH_BIN64 "cf5dba83edf8619f57ccff4edb989c62")
 ocv_update(FFMPEG_FILE_HASH_CMAKE "f8e65dbe4a3b4eedc0d2997e07c3f3fd")

 function(download_win_ffmpeg script_var)
@@ -1,160 +0,0 @@
-/*******************************************************************************
- * Copyright (c) 2008-2020 The Khronos Group Inc.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *    http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- ******************************************************************************/
-/*****************************************************************************\
-
-Copyright (c) 2013-2019 Intel Corporation All Rights Reserved.
-
-THESE MATERIALS ARE PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL INTEL OR ITS
-CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
-EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
-PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
-PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
-OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY OR TORT (INCLUDING
-NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THESE
-MATERIALS, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
-File Name: cl_va_api_media_sharing_intel.h
-
-Abstract:
-
-Notes:
-
-\*****************************************************************************/
-
-
-#ifndef __OPENCL_CL_VA_API_MEDIA_SHARING_INTEL_H
-#define __OPENCL_CL_VA_API_MEDIA_SHARING_INTEL_H
-
-#include <CL/cl.h>
-#include <CL/cl_platform.h>
-#include <va/va.h>
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-/******************************************
-* cl_intel_va_api_media_sharing extension *
-*******************************************/
-
-#define cl_intel_va_api_media_sharing 1
-
-/* error codes */
-#define CL_INVALID_VA_API_MEDIA_ADAPTER_INTEL               -1098
-#define CL_INVALID_VA_API_MEDIA_SURFACE_INTEL               -1099
-#define CL_VA_API_MEDIA_SURFACE_ALREADY_ACQUIRED_INTEL      -1100
-#define CL_VA_API_MEDIA_SURFACE_NOT_ACQUIRED_INTEL          -1101
-
-/* cl_va_api_device_source_intel */
-#define CL_VA_API_DISPLAY_INTEL                             0x4094
-
-/* cl_va_api_device_set_intel */
-#define CL_PREFERRED_DEVICES_FOR_VA_API_INTEL               0x4095
-#define CL_ALL_DEVICES_FOR_VA_API_INTEL                     0x4096
-
-/* cl_context_info */
-#define CL_CONTEXT_VA_API_DISPLAY_INTEL                     0x4097
-
-/* cl_mem_info */
-#define CL_MEM_VA_API_MEDIA_SURFACE_INTEL                   0x4098
-
-/* cl_image_info */
-#define CL_IMAGE_VA_API_PLANE_INTEL                         0x4099
-
-/* cl_command_type */
-#define CL_COMMAND_ACQUIRE_VA_API_MEDIA_SURFACES_INTEL      0x409A
-#define CL_COMMAND_RELEASE_VA_API_MEDIA_SURFACES_INTEL      0x409B
-
-typedef cl_uint cl_va_api_device_source_intel;
-typedef cl_uint cl_va_api_device_set_intel;
-
-extern CL_API_ENTRY cl_int CL_API_CALL
-clGetDeviceIDsFromVA_APIMediaAdapterINTEL(
-    cl_platform_id                platform,
-    cl_va_api_device_source_intel media_adapter_type,
-    void*                         media_adapter,
-    cl_va_api_device_set_intel    media_adapter_set,
-    cl_uint                       num_entries,
-    cl_device_id*                 devices,
-    cl_uint*                      num_devices) CL_EXT_SUFFIX__VERSION_1_2;
-
-typedef CL_API_ENTRY cl_int (CL_API_CALL * clGetDeviceIDsFromVA_APIMediaAdapterINTEL_fn)(
-    cl_platform_id                platform,
-    cl_va_api_device_source_intel media_adapter_type,
-    void*                         media_adapter,
-    cl_va_api_device_set_intel    media_adapter_set,
-    cl_uint                       num_entries,
-    cl_device_id*                 devices,
-    cl_uint*                      num_devices) CL_EXT_SUFFIX__VERSION_1_2;
-
-extern CL_API_ENTRY cl_mem CL_API_CALL
-clCreateFromVA_APIMediaSurfaceINTEL(
-    cl_context                    context,
-    cl_mem_flags                  flags,
-    VASurfaceID*                  surface,
-    cl_uint                       plane,
-    cl_int*                       errcode_ret) CL_EXT_SUFFIX__VERSION_1_2;
-
-typedef CL_API_ENTRY cl_mem (CL_API_CALL * clCreateFromVA_APIMediaSurfaceINTEL_fn)(
-    cl_context                    context,
-    cl_mem_flags                  flags,
-    VASurfaceID*                  surface,
-    cl_uint                       plane,
-    cl_int*                       errcode_ret) CL_EXT_SUFFIX__VERSION_1_2;
-
-extern CL_API_ENTRY cl_int CL_API_CALL
-clEnqueueAcquireVA_APIMediaSurfacesINTEL(
-    cl_command_queue              command_queue,
-    cl_uint                       num_objects,
-    const cl_mem*                 mem_objects,
-    cl_uint                       num_events_in_wait_list,
-    const cl_event*               event_wait_list,
-    cl_event*                     event) CL_EXT_SUFFIX__VERSION_1_2;
-
-typedef CL_API_ENTRY cl_int (CL_API_CALL *clEnqueueAcquireVA_APIMediaSurfacesINTEL_fn)(
-    cl_command_queue              command_queue,
-    cl_uint                       num_objects,
-    const cl_mem*                 mem_objects,
-    cl_uint                       num_events_in_wait_list,
-    const cl_event*               event_wait_list,
-    cl_event*                     event) CL_EXT_SUFFIX__VERSION_1_2;
-
-extern CL_API_ENTRY cl_int CL_API_CALL
-clEnqueueReleaseVA_APIMediaSurfacesINTEL(
-    cl_command_queue              command_queue,
-    cl_uint                       num_objects,
-    const cl_mem*                 mem_objects,
-    cl_uint                       num_events_in_wait_list,
-    const cl_event*               event_wait_list,
-    cl_event*                     event) CL_EXT_SUFFIX__VERSION_1_2;
-
-typedef CL_API_ENTRY cl_int (CL_API_CALL *clEnqueueReleaseVA_APIMediaSurfacesINTEL_fn)(
-    cl_command_queue              command_queue,
-    cl_uint                       num_objects,
-    const cl_mem*                 mem_objects,
-    cl_uint                       num_events_in_wait_list,
-    const cl_event*               event_wait_list,
-    cl_event*                     event) CL_EXT_SUFFIX__VERSION_1_2;
-
-#ifdef __cplusplus
-}
-#endif
-
-#endif  /* __OPENCL_CL_VA_API_MEDIA_SHARING_INTEL_H */
-
@@ -17,7 +17,7 @@ file(GLOB lib_hdrs ${IPP_IW_PATH}/include/*.h ${IPP_IW_PATH}/include/iw/*.h ${IP
 #         Define the library target:
 # ----------------------------------------------------------------------------------

-add_library(${IPP_IW_LIBRARY} STATIC ${OPENCV_3RDPARTY_EXCLUDE_FROM_ALL} ${lib_srcs} ${lib_hdrs})
+add_library(${IPP_IW_LIBRARY} STATIC ${lib_srcs} ${lib_hdrs})

 if(UNIX)
  if(CV_GCC OR CV_CLANG OR CV_ICC)
@@ -41,5 +41,5 @@ if(ENABLE_SOLUTION_FOLDERS)
 endif()

 if(NOT BUILD_SHARED_LIBS)
-  ocv_install_target(${IPP_IW_LIBRARY} EXPORT OpenCVModules ARCHIVE DESTINATION ${OPENCV_3P_LIB_INSTALL_PATH} COMPONENT dev OPTIONAL)
+  ocv_install_target(${IPP_IW_LIBRARY} EXPORT OpenCVModules ARCHIVE DESTINATION ${OPENCV_3P_LIB_INSTALL_PATH} COMPONENT dev)
 endif()
@@ -37,7 +37,7 @@ set(ITT_SRCS
    src/ittnotify/jitprofiling.c
 )

-add_library(${ITT_LIBRARY} STATIC ${OPENCV_3RDPARTY_EXCLUDE_FROM_ALL} ${ITT_SRCS} ${ITT_PUBLIC_HDRS} ${ITT_PRIVATE_HDRS})
+add_library(${ITT_LIBRARY} STATIC ${ITT_SRCS} ${ITT_PUBLIC_HDRS} ${ITT_PRIVATE_HDRS})

 if(NOT WIN32)
  if(HAVE_DL_LIBRARY)
@@ -60,7 +60,7 @@ if(ENABLE_SOLUTION_FOLDERS)
 endif()

 if(NOT BUILD_SHARED_LIBS)
-  ocv_install_target(${ITT_LIBRARY} EXPORT OpenCVModules ARCHIVE DESTINATION ${OPENCV_3P_LIB_INSTALL_PATH} COMPONENT dev OPTIONAL)
+  ocv_install_target(${ITT_LIBRARY} EXPORT OpenCVModules ARCHIVE DESTINATION ${OPENCV_3P_LIB_INSTALL_PATH} COMPONENT dev)
 endif()

 ocv_install_3rdparty_licenses(ittnotify src/ittnotify/LICENSE.BSD src/ittnotify/LICENSE.GPL)
@@ -17,7 +17,7 @@ file(GLOB lib_ext_hdrs jasper/*.h)
 #         Define the library target:
 # ----------------------------------------------------------------------------------

-add_library(${JASPER_LIBRARY} STATIC ${OPENCV_3RDPARTY_EXCLUDE_FROM_ALL} ${lib_srcs} ${lib_hdrs} ${lib_ext_hdrs})
+add_library(${JASPER_LIBRARY} STATIC ${lib_srcs} ${lib_hdrs} ${lib_ext_hdrs})

 if(WIN32 AND NOT MINGW)
  add_definitions(-DJAS_WIN_MSVC_BUILD)
@@ -46,7 +46,7 @@ if(ENABLE_SOLUTION_FOLDERS)
 endif()

 if(NOT BUILD_SHARED_LIBS)
-  ocv_install_target(${JASPER_LIBRARY} EXPORT OpenCVModules ARCHIVE DESTINATION ${OPENCV_3P_LIB_INSTALL_PATH} COMPONENT dev OPTIONAL)
+  ocv_install_target(${JASPER_LIBRARY} EXPORT OpenCVModules ARCHIVE DESTINATION ${OPENCV_3P_LIB_INSTALL_PATH} COMPONENT dev)
 endif()

 ocv_install_3rdparty_licenses(jasper LICENSE README copyright)
@@ -4,9 +4,9 @@ ocv_warnings_disable(CMAKE_C_FLAGS -Wunused-parameter -Wsign-compare -Wshorten-6

 set(VERSION_MAJOR 2)
 set(VERSION_MINOR 0)
-set(VERSION_REVISION 6)
+set(VERSION_REVISION 5)
 set(VERSION ${VERSION_MAJOR}.${VERSION_MINOR}.${VERSION_REVISION})
-set(LIBJPEG_TURBO_VERSION_NUMBER 2000006)
+set(LIBJPEG_TURBO_VERSION_NUMBER 2000005)

 string(TIMESTAMP BUILD "opencv-${OPENCV_VERSION}-libjpeg-turbo")
 if(CMAKE_BUILD_TYPE STREQUAL "Debug")
@@ -106,7 +106,7 @@ set(JPEG_SOURCES ${JPEG_SOURCES} jsimd_none.c)

 ocv_list_add_prefix(JPEG_SOURCES src/)

-add_library(${JPEG_LIBRARY} STATIC ${OPENCV_3RDPARTY_EXCLUDE_FROM_ALL} ${JPEG_SOURCES} ${SIMD_OBJS})
+add_library(${JPEG_LIBRARY} STATIC ${JPEG_SOURCES} ${SIMD_OBJS})

 set_target_properties(${JPEG_LIBRARY}
  PROPERTIES OUTPUT_NAME ${JPEG_LIBRARY}
@@ -121,7 +121,7 @@ if(ENABLE_SOLUTION_FOLDERS)
 endif()

 if(NOT BUILD_SHARED_LIBS)
-  ocv_install_target(${JPEG_LIBRARY} EXPORT OpenCVModules ARCHIVE DESTINATION ${OPENCV_3P_LIB_INSTALL_PATH} COMPONENT dev OPTIONAL)
+  ocv_install_target(${JPEG_LIBRARY} EXPORT OpenCVModules ARCHIVE DESTINATION ${OPENCV_3P_LIB_INSTALL_PATH} COMPONENT dev)
 endif()

 ocv_install_3rdparty_licenses(libjpeg-turbo README.md LICENSE.md README.ijg)
@@ -91,7 +91,7 @@ best of our understanding.
 The Modified (3-clause) BSD License
 ===================================

-Copyright (C)2009-2020 D. R. Commander.  All Rights Reserved.
+Copyright (C)2009-2019 D. R. Commander.  All Rights Reserved.
 Copyright (C)2015 Viktor Szathmáry.  All Rights Reserved.

 Redistribution and use in source and binary forms, with or without
@@ -223,12 +223,12 @@ https://www.iso.org/standard/54989.html and http://www.itu.int/rec/T-REC-T.871.
 A PDF file of the older JFIF 1.02 specification is available at
 http://www.w3.org/Graphics/JPEG/jfif3.pdf.

-The TIFF 6.0 file format specification can be obtained from
-http://mirrors.ctan.org/graphics/tiff/TIFF6.ps.gz.  The JPEG incorporation
-scheme found in the TIFF 6.0 spec of 3-June-92 has a number of serious
-problems.  IJG does not recommend use of the TIFF 6.0 design (TIFF Compression
-tag 6).  Instead, we recommend the JPEG design proposed by TIFF Technical Note
-#2 (Compression tag 7).  Copies of this Note can be obtained from
+The TIFF 6.0 file format specification can be obtained by FTP from
+ftp://ftp.sgi.com/graphics/tiff/TIFF6.ps.gz.  The JPEG incorporation scheme
+found in the TIFF 6.0 spec of 3-June-92 has a number of serious problems.
+IJG does not recommend use of the TIFF 6.0 design (TIFF Compression tag 6).
+Instead, we recommend the JPEG design proposed by TIFF Technical Note #2
+(Compression tag 7).  Copies of this Note can be obtained from
 http://www.ijg.org/files/.  It is expected that the next revision
 of the TIFF spec will replace the 6.0 JPEG design with the Note's design.
 Although IJG's own code does not support TIFF/JPEG, the free libtiff library
@@ -243,8 +243,14 @@ The most recent released version can always be found there in
 directory "files".

 The JPEG FAQ (Frequently Asked Questions) article is a source of some
-general information about JPEG.  It is available at
-http://www.faqs.org/faqs/jpeg-faq.
+general information about JPEG.
+It is available on the World Wide Web at http://www.faqs.org/faqs/jpeg-faq/
+and other news.answers archive sites, including the official news.answers
+archive at rtfm.mit.edu: ftp://rtfm.mit.edu/pub/usenet/news.answers/jpeg-faq/.
+If you don't have Web or FTP access, send e-mail to mail-server@rtfm.mit.edu
+with body
+        send usenet/news.answers/jpeg-faq/part1
+        send usenet/news.answers/jpeg-faq/part2


 FILE FORMAT COMPATIBILITY
@@ -2,7 +2,7 @@ Background
 ==========

 libjpeg-turbo is a JPEG image codec that uses SIMD instructions to accelerate
-baseline JPEG compression and decompression on x86, x86-64, Arm, PowerPC, and
+baseline JPEG compression and decompression on x86, x86-64, ARM, PowerPC, and
 MIPS systems, as well as progressive JPEG compression on x86 and x86-64
 systems.  On such systems, libjpeg-turbo is generally 2-6x as fast as libjpeg,
 all else being equal.  On other types of systems, libjpeg-turbo can still
@@ -179,8 +179,8 @@ supported and which aren't.

 NOTE:  As of this writing, extensive research has been conducted into the
 usefulness of DCT scaling as a means of data reduction and SmartScale as a
-means of quality improvement.  Readers are invited to peruse the research at
-<http://www.libjpeg-turbo.org/About/SmartScale> and draw their own conclusions,
+means of quality improvement.  The reader is invited to peruse the research at
+<http://www.libjpeg-turbo.org/About/SmartScale> and draw his/her own conclusions,
 but it is the general belief of our project that these features have not
 demonstrated sufficient usefulness to justify inclusion in libjpeg-turbo.

@@ -287,13 +287,12 @@ following reasons:
  (and slightly faster) floating point IDCT algorithm introduced in libjpeg
  v8a as opposed to the algorithm used in libjpeg v6b.  It should be noted,
  however, that this algorithm basically brings the accuracy of the floating
-  point IDCT in line with the accuracy of the accurate integer IDCT.  The
-  floating point DCT/IDCT algorithms are mainly a legacy feature, and they do
-  not produce significantly more accuracy than the accurate integer algorithms
-  (to put numbers on this, the typical difference in PNSR between the two
-  algorithms is less than 0.10 dB, whereas changing the quality level by 1 in
-  the upper range of the quality scale is typically more like a 1.0 dB
-  difference.)
+  point IDCT in line with the accuracy of the slow integer IDCT.  The floating
+  point DCT/IDCT algorithms are mainly a legacy feature, and they do not
+  produce significantly more accuracy than the slow integer algorithms (to put
+  numbers on this, the typical difference in PNSR between the two algorithms
+  is less than 0.10 dB, whereas changing the quality level by 1 in the upper
+  range of the quality scale is typically more like a 1.0 dB difference.)

 - If the floating point algorithms in libjpeg-turbo are not implemented using
  SIMD instructions on a particular platform, then the accuracy of the
@@ -341,7 +340,7 @@ The algorithm used by the SIMD-accelerated quantization function cannot produce
 correct results whenever the fast integer forward DCT is used along with a JPEG
 quality of 98-100.  Thus, libjpeg-turbo must use the non-SIMD quantization
 function in those cases.  This causes performance to drop by as much as 40%.
-It is therefore strongly advised that you use the accurate integer forward DCT
+It is therefore strongly advised that you use the slow integer forward DCT
 whenever encoding images with a JPEG quality of 98 or higher.


@@ -34,10 +34,10 @@
 * memory footprint by 64k, which is important for some mobile applications
 * that create many isolated instances of libjpeg-turbo (web browsers, for
 * instance.)  This may improve performance on some mobile platforms as well.
- * This feature is enabled by default only on Arm processors, because some x86
+ * This feature is enabled by default only on ARM processors, because some x86
 * chips have a slow implementation of bsr, and the use of clz/bsr cannot be
 * shown to have a significant performance impact even on the x86 chips that
- * have a fast implementation of it.  When building for Armv6, you can
+ * have a fast implementation of it.  When building for ARMv6, you can
 * explicitly disable the use of clz/bsr by adding -mthumb to the compiler
 * flags (this defines __thumb__).
 */
@@ -1,10 +1,8 @@
 /*
 * jcinit.c
 *
- * This file was part of the Independent JPEG Group's software:
 * Copyright (C) 1991-1997, Thomas G. Lane.
- * libjpeg-turbo Modifications:
- * Copyright (C) 2020, D. R. Commander.
+ * This file is part of the Independent JPEG Group's software.
 * For conditions of distribution and use, see the accompanying README.ijg
 * file.
 *
@@ -21,7 +19,6 @@
 #define JPEG_INTERNALS
 #include "jinclude.h"
 #include "jpeglib.h"
-#include "jpegcomp.h"


 /*
@@ -43,10 +43,10 @@
 * memory footprint by 64k, which is important for some mobile applications
 * that create many isolated instances of libjpeg-turbo (web browsers, for
 * instance.)  This may improve performance on some mobile platforms as well.
- * This feature is enabled by default only on Arm processors, because some x86
+ * This feature is enabled by default only on ARM processors, because some x86
 * chips have a slow implementation of bsr, and the use of clz/bsr cannot be
 * shown to have a significant performance impact even on the x86 chips that
- * have a fast implementation of it.  When building for Armv6, you can
+ * have a fast implementation of it.  When building for ARMv6, you can
 * explicitly disable the use of clz/bsr by adding -mthumb to the compiler
 * flags (this defines __thumb__).
 */
@@ -4,8 +4,8 @@
 * This file was part of the Independent JPEG Group's software:
 * Copyright (C) 1995-1998, Thomas G. Lane.
 * Modified 2000-2009 by Guido Vollbeding.
- * libjpeg-turbo Modifications:
- * Copyright (C) 2020, D. R. Commander.
+ * It was modified by The libjpeg-turbo Project to include only code relevant
+ * to libjpeg-turbo.
 * For conditions of distribution and use, see the accompanying README.ijg
 * file.
 *
@@ -17,7 +17,6 @@
 #define JPEG_INTERNALS
 #include "jinclude.h"
 #include "jpeglib.h"
-#include "jpegcomp.h"


 /* Forward declarations */
@@ -4,7 +4,7 @@
 * This file was part of the Independent JPEG Group's software:
 * Copyright (C) 1994-1996, Thomas G. Lane.
 * libjpeg-turbo Modifications:
- * Copyright (C) 2010, 2015-2018, 2020, D. R. Commander.
+ * Copyright (C) 2010, 2015-2018, D. R. Commander.
 * Copyright (C) 2015, Google, Inc.
 * For conditions of distribution and use, see the accompanying README.ijg
 * file.
@@ -21,8 +21,6 @@
 #include "jinclude.h"
 #include "jdmainct.h"
 #include "jdcoefct.h"
-#include "jdmaster.h"
-#include "jdmerge.h"
 #include "jdsample.h"
 #include "jmemsys.h"

@@ -318,8 +316,6 @@ LOCAL(void)
 read_and_discard_scanlines(j_decompress_ptr cinfo, JDIMENSION num_lines)
 {
  JDIMENSION n;
-  my_master_ptr master = (my_master_ptr)cinfo->master;
-  JSAMPARRAY scanlines = NULL;
  void (*color_convert) (j_decompress_ptr cinfo, JSAMPIMAGE input_buf,
                         JDIMENSION input_row, JSAMPARRAY output_buf,
                         int num_rows) = NULL;
@@ -336,13 +332,8 @@ read_and_discard_scanlines(j_decompress_ptr cinfo, JDIMENSION num_lines)
    cinfo->cquantize->color_quantize = noop_quantize;
  }

-  if (master->using_merged_upsample && cinfo->max_v_samp_factor == 2) {
-    my_merged_upsample_ptr upsample = (my_merged_upsample_ptr)cinfo->upsample;
-    scanlines = &upsample->spare_row;
-  }
-
  for (n = 0; n < num_lines; n++)
-    jpeg_read_scanlines(cinfo, scanlines, 1);
+    jpeg_read_scanlines(cinfo, NULL, 1);

  if (color_convert)
    cinfo->cconvert->color_convert = color_convert;
@@ -362,12 +353,6 @@ increment_simple_rowgroup_ctr(j_decompress_ptr cinfo, JDIMENSION rows)
 {
  JDIMENSION rows_left;
  my_main_ptr main_ptr = (my_main_ptr)cinfo->main;
-  my_master_ptr master = (my_master_ptr)cinfo->master;
-
-  if (master->using_merged_upsample && cinfo->max_v_samp_factor == 2) {
-    read_and_discard_scanlines(cinfo, rows);
-    return;
-  }

  /* Increment the counter to the next row group after the skipped rows. */
  main_ptr->rowgroup_ctr += rows / cinfo->max_v_samp_factor;
@@ -397,27 +382,21 @@ jpeg_skip_scanlines(j_decompress_ptr cinfo, JDIMENSION num_lines)
 {
  my_main_ptr main_ptr = (my_main_ptr)cinfo->main;
  my_coef_ptr coef = (my_coef_ptr)cinfo->coef;
-  my_master_ptr master = (my_master_ptr)cinfo->master;
  my_upsample_ptr upsample = (my_upsample_ptr)cinfo->upsample;
  JDIMENSION i, x;
  int y;
  JDIMENSION lines_per_iMCU_row, lines_left_in_iMCU_row, lines_after_iMCU_row;
  JDIMENSION lines_to_skip, lines_to_read;

-  /* Two-pass color quantization is not supported. */
-  if (cinfo->quantize_colors && cinfo->two_pass_quantize)
-    ERREXIT(cinfo, JERR_NOTIMPL);
-
  if (cinfo->global_state != DSTATE_SCANNING)
    ERREXIT1(cinfo, JERR_BAD_STATE, cinfo->global_state);

  /* Do not skip past the bottom of the image. */
  if (cinfo->output_scanline + num_lines >= cinfo->output_height) {
-    num_lines = cinfo->output_height - cinfo->output_scanline;
    cinfo->output_scanline = cinfo->output_height;
    (*cinfo->inputctl->finish_input_pass) (cinfo);
    cinfo->inputctl->eoi_reached = TRUE;
-    return num_lines;
+    return cinfo->output_height - cinfo->output_scanline;
  }

  if (num_lines == 0)
@@ -466,10 +445,8 @@ jpeg_skip_scanlines(j_decompress_ptr cinfo, JDIMENSION num_lines)
    main_ptr->buffer_full = FALSE;
    main_ptr->rowgroup_ctr = 0;
    main_ptr->context_state = CTX_PREPARE_FOR_IMCU;
-    if (!master->using_merged_upsample) {
-      upsample->next_row_out = cinfo->max_v_samp_factor;
-      upsample->rows_to_go = cinfo->output_height - cinfo->output_scanline;
-    }
+    upsample->next_row_out = cinfo->max_v_samp_factor;
+    upsample->rows_to_go = cinfo->output_height - cinfo->output_scanline;
  }

  /* Skipping is much simpler when context rows are not required. */
@@ -481,10 +458,8 @@ jpeg_skip_scanlines(j_decompress_ptr cinfo, JDIMENSION num_lines)
      cinfo->output_scanline += lines_left_in_iMCU_row;
      main_ptr->buffer_full = FALSE;
      main_ptr->rowgroup_ctr = 0;
-      if (!master->using_merged_upsample) {
-        upsample->next_row_out = cinfo->max_v_samp_factor;
-        upsample->rows_to_go = cinfo->output_height - cinfo->output_scanline;
-      }
+      upsample->next_row_out = cinfo->max_v_samp_factor;
+      upsample->rows_to_go = cinfo->output_height - cinfo->output_scanline;
    }
  }

@@ -519,8 +494,7 @@ jpeg_skip_scanlines(j_decompress_ptr cinfo, JDIMENSION num_lines)
      cinfo->output_iMCU_row += lines_to_skip / lines_per_iMCU_row;
      increment_simple_rowgroup_ctr(cinfo, lines_to_read);
    }
-    if (!master->using_merged_upsample)
-      upsample->rows_to_go = cinfo->output_height - cinfo->output_scanline;
+    upsample->rows_to_go = cinfo->output_height - cinfo->output_scanline;
    return num_lines;
  }

@@ -561,8 +535,7 @@ jpeg_skip_scanlines(j_decompress_ptr cinfo, JDIMENSION num_lines)
   * bit odd, since "rows_to_go" seems to be redundantly keeping track of
   * output_scanline.
   */
-  if (!master->using_merged_upsample)
-    upsample->rows_to_go = cinfo->output_height - cinfo->output_scanline;
+  upsample->rows_to_go = cinfo->output_height - cinfo->output_scanline;

  /* Always skip the requested number of lines. */
  return num_lines;
@@ -6,7 +6,7 @@
 * libjpeg-turbo Modifications:
 * Copyright 2009 Pierre Ossman <ossman@cendio.se> for Cendio AB
 * Copyright (C) 2010, 2015-2016, D. R. Commander.
- * Copyright (C) 2015, 2020, Google, Inc.
+ * Copyright (C) 2015, Google, Inc.
 * For conditions of distribution and use, see the accompanying README.ijg
 * file.
 *
@@ -495,13 +495,11 @@ decompress_smooth_data(j_decompress_ptr cinfo, JSAMPIMAGE output_buf)
      if (first_row && block_row == 0)
        prev_block_row = buffer_ptr;
      else
-        prev_block_row = buffer[block_row - 1] +
-                         cinfo->master->first_MCU_col[ci];
+        prev_block_row = buffer[block_row - 1];
      if (last_row && block_row == block_rows - 1)
        next_block_row = buffer_ptr;
      else
-        next_block_row = buffer[block_row + 1] +
-                         cinfo->master->first_MCU_col[ci];
+        next_block_row = buffer[block_row + 1];
      /* We fetch the surrounding DC values using a sliding-register approach.
       * Initialize all nine here so as to do the right thing on narrow pics.
       */
@@ -571,10 +571,11 @@ ycck_cmyk_convert(j_decompress_ptr cinfo, JSAMPIMAGE input_buf,
 * RGB565 conversion
 */

-#define PACK_SHORT_565_LE(r, g, b) \
-  ((((r) << 8) & 0xF800) | (((g) << 3) & 0x7E0) | ((b) >> 3))
-#define PACK_SHORT_565_BE(r, g, b) \
-  (((r) & 0xF8) | ((g) >> 5) | (((g) << 11) & 0xE000) | (((b) << 5) & 0x1F00))
+#define PACK_SHORT_565_LE(r, g, b)  ((((r) << 8) & 0xF800) | \
+                                     (((g) << 3) & 0x7E0) | ((b) >> 3))
+#define PACK_SHORT_565_BE(r, g, b)  (((r) & 0xF8) | ((g) >> 5) | \
+                                     (((g) << 11) & 0xE000) | \
+                                     (((b) << 5) & 0x1F00))

 #define PACK_TWO_PIXELS_LE(l, r)    ((r << 16) | l)
 #define PACK_TWO_PIXELS_BE(l, r)    ((l << 16) | r)
@@ -5,7 +5,7 @@
 * Copyright (C) 1994-1996, Thomas G. Lane.
 * libjpeg-turbo Modifications:
 * Copyright 2009 Pierre Ossman <ossman@cendio.se> for Cendio AB
- * Copyright (C) 2009, 2011, 2014-2015, 2020, D. R. Commander.
+ * Copyright (C) 2009, 2011, 2014-2015, D. R. Commander.
 * Copyright (C) 2013, Linaro Limited.
 * For conditions of distribution and use, see the accompanying README.ijg
 * file.
@@ -40,13 +40,41 @@
 #define JPEG_INTERNALS
 #include "jinclude.h"
 #include "jpeglib.h"
-#include "jdmerge.h"
 #include "jsimd.h"
 #include "jconfigint.h"

 #ifdef UPSAMPLE_MERGING_SUPPORTED


+/* Private subobject */
+
+typedef struct {
+  struct jpeg_upsampler pub;    /* public fields */
+
+  /* Pointer to routine to do actual upsampling/conversion of one row group */
+  void (*upmethod) (j_decompress_ptr cinfo, JSAMPIMAGE input_buf,
+                    JDIMENSION in_row_group_ctr, JSAMPARRAY output_buf);
+
+  /* Private state for YCC->RGB conversion */
+  int *Cr_r_tab;                /* => table for Cr to R conversion */
+  int *Cb_b_tab;                /* => table for Cb to B conversion */
+  JLONG *Cr_g_tab;              /* => table for Cr to G conversion */
+  JLONG *Cb_g_tab;              /* => table for Cb to G conversion */
+
+  /* For 2:1 vertical sampling, we produce two output rows at a time.
+   * We need a "spare" row buffer to hold the second output row if the
+   * application provides just a one-row buffer; we also use the spare
+   * to discard the dummy last row if the image height is odd.
+   */
+  JSAMPROW spare_row;
+  boolean spare_full;           /* T if spare buffer is occupied */
+
+  JDIMENSION out_row_width;     /* samples per output row */
+  JDIMENSION rows_to_go;        /* counts rows remaining in image */
+} my_upsampler;
+
+typedef my_upsampler *my_upsample_ptr;
+
 #define SCALEBITS       16      /* speediest right-shift on some machines */
 #define ONE_HALF        ((JLONG)1 << (SCALEBITS - 1))
 #define FIX(x)          ((JLONG)((x) * (1L << SCALEBITS) + 0.5))
@@ -161,7 +189,7 @@
 LOCAL(void)
 build_ycc_rgb_table(j_decompress_ptr cinfo)
 {
-  my_merged_upsample_ptr upsample = (my_merged_upsample_ptr)cinfo->upsample;
+  my_upsample_ptr upsample = (my_upsample_ptr)cinfo->upsample;
  int i;
  JLONG x;
  SHIFT_TEMPS
@@ -204,7 +232,7 @@ build_ycc_rgb_table(j_decompress_ptr cinfo)
 METHODDEF(void)
 start_pass_merged_upsample(j_decompress_ptr cinfo)
 {
-  my_merged_upsample_ptr upsample = (my_merged_upsample_ptr)cinfo->upsample;
+  my_upsample_ptr upsample = (my_upsample_ptr)cinfo->upsample;

  /* Mark the spare buffer empty */
  upsample->spare_full = FALSE;
@@ -226,7 +254,7 @@ merged_2v_upsample(j_decompress_ptr cinfo, JSAMPIMAGE input_buf,
                   JDIMENSION *out_row_ctr, JDIMENSION out_rows_avail)
 /* 2:1 vertical sampling case: may need a spare row. */
 {
-  my_merged_upsample_ptr upsample = (my_merged_upsample_ptr)cinfo->upsample;
+  my_upsample_ptr upsample = (my_upsample_ptr)cinfo->upsample;
  JSAMPROW work_ptrs[2];
  JDIMENSION num_rows;          /* number of rows returned to caller */

@@ -277,7 +305,7 @@ merged_1v_upsample(j_decompress_ptr cinfo, JSAMPIMAGE input_buf,
                   JDIMENSION *out_row_ctr, JDIMENSION out_rows_avail)
 /* 1:1 vertical sampling case: much easier, never need a spare row. */
 {
-  my_merged_upsample_ptr upsample = (my_merged_upsample_ptr)cinfo->upsample;
+  my_upsample_ptr upsample = (my_upsample_ptr)cinfo->upsample;

  /* Just do the upsampling. */
  (*upsample->upmethod) (cinfo, input_buf, *in_row_group_ctr,
@@ -392,10 +420,11 @@ h2v2_merged_upsample(j_decompress_ptr cinfo, JSAMPIMAGE input_buf,
 * RGB565 conversion
 */

-#define PACK_SHORT_565_LE(r, g, b) \
-  ((((r) << 8) & 0xF800) | (((g) << 3) & 0x7E0) | ((b) >> 3))
-#define PACK_SHORT_565_BE(r, g, b) \
-  (((r) & 0xF8) | ((g) >> 5) | (((g) << 11) & 0xE000) | (((b) << 5) & 0x1F00))
+#define PACK_SHORT_565_LE(r, g, b)  ((((r) << 8) & 0xF800) | \
+                                     (((g) << 3) & 0x7E0) | ((b) >> 3))
+#define PACK_SHORT_565_BE(r, g, b)  (((r) & 0xF8) | ((g) >> 5) | \
+                                     (((g) << 11) & 0xE000) | \
+                                     (((b) << 5) & 0x1F00))

 #define PACK_TWO_PIXELS_LE(l, r)    ((r << 16) | l)
 #define PACK_TWO_PIXELS_BE(l, r)    ((l << 16) | r)
@@ -537,11 +566,11 @@ h2v2_merged_upsample_565D(j_decompress_ptr cinfo, JSAMPIMAGE input_buf,
 GLOBAL(void)
 jinit_merged_upsampler(j_decompress_ptr cinfo)
 {
-  my_merged_upsample_ptr upsample;
+  my_upsample_ptr upsample;

-  upsample = (my_merged_upsample_ptr)
+  upsample = (my_upsample_ptr)
    (*cinfo->mem->alloc_small) ((j_common_ptr)cinfo, JPOOL_IMAGE,
-                                sizeof(my_merged_upsampler));
+                                sizeof(my_upsampler));
  cinfo->upsample = (struct jpeg_upsampler *)upsample;
  upsample->pub.start_pass = start_pass_merged_upsample;
  upsample->pub.need_context_rows = FALSE;
@@ -1,47 +0,0 @@
-/*
- * jdmerge.h
- *
- * This file was part of the Independent JPEG Group's software:
- * Copyright (C) 1994-1996, Thomas G. Lane.
- * libjpeg-turbo Modifications:
- * Copyright (C) 2020, D. R. Commander.
- * For conditions of distribution and use, see the accompanying README.ijg
- * file.
- */
-
-#define JPEG_INTERNALS
-#include "jpeglib.h"
-
-#ifdef UPSAMPLE_MERGING_SUPPORTED
-
-
-/* Private subobject */
-
-typedef struct {
-  struct jpeg_upsampler pub;    /* public fields */
-
-  /* Pointer to routine to do actual upsampling/conversion of one row group */
-  void (*upmethod) (j_decompress_ptr cinfo, JSAMPIMAGE input_buf,
-                    JDIMENSION in_row_group_ctr, JSAMPARRAY output_buf);
-
-  /* Private state for YCC->RGB conversion */
-  int *Cr_r_tab;                /* => table for Cr to R conversion */
-  int *Cb_b_tab;                /* => table for Cb to B conversion */
-  JLONG *Cr_g_tab;              /* => table for Cr to G conversion */
-  JLONG *Cb_g_tab;              /* => table for Cb to G conversion */
-
-  /* For 2:1 vertical sampling, we produce two output rows at a time.
-   * We need a "spare" row buffer to hold the second output row if the
-   * application provides just a one-row buffer; we also use the spare
-   * to discard the dummy last row if the image height is odd.
-   */
-  JSAMPROW spare_row;
-  boolean spare_full;           /* T if spare buffer is occupied */
-
-  JDIMENSION out_row_width;     /* samples per output row */
-  JDIMENSION rows_to_go;        /* counts rows remaining in image */
-} my_merged_upsampler;
-
-typedef my_merged_upsampler *my_merged_upsample_ptr;
-
-#endif /* UPSAMPLE_MERGING_SUPPORTED */
@@ -5,7 +5,7 @@
 * Copyright (C) 1994-1996, Thomas G. Lane.
 * libjpeg-turbo Modifications:
 * Copyright (C) 2013, Linaro Limited.
- * Copyright (C) 2014-2015, 2018, 2020, D. R. Commander.
+ * Copyright (C) 2014-2015, 2018, D. R. Commander.
 * For conditions of distribution and use, see the accompanying README.ijg
 * file.
 *
@@ -19,7 +19,7 @@ h2v1_merged_upsample_565_internal(j_decompress_ptr cinfo, JSAMPIMAGE input_buf,
                                  JDIMENSION in_row_group_ctr,
                                  JSAMPARRAY output_buf)
 {
-  my_merged_upsample_ptr upsample = (my_merged_upsample_ptr)cinfo->upsample;
+  my_upsample_ptr upsample = (my_upsample_ptr)cinfo->upsample;
  register int y, cred, cgreen, cblue;
  int cb, cr;
  register JSAMPROW outptr;
@@ -90,7 +90,7 @@ h2v1_merged_upsample_565D_internal(j_decompress_ptr cinfo,
                                   JDIMENSION in_row_group_ctr,
                                   JSAMPARRAY output_buf)
 {
-  my_merged_upsample_ptr upsample = (my_merged_upsample_ptr)cinfo->upsample;
+  my_upsample_ptr upsample = (my_upsample_ptr)cinfo->upsample;
  register int y, cred, cgreen, cblue;
  int cb, cr;
  register JSAMPROW outptr;
@@ -163,7 +163,7 @@ h2v2_merged_upsample_565_internal(j_decompress_ptr cinfo, JSAMPIMAGE input_buf,
                                  JDIMENSION in_row_group_ctr,
                                  JSAMPARRAY output_buf)
 {
-  my_merged_upsample_ptr upsample = (my_merged_upsample_ptr)cinfo->upsample;
+  my_upsample_ptr upsample = (my_upsample_ptr)cinfo->upsample;
  register int y, cred, cgreen, cblue;
  int cb, cr;
  register JSAMPROW outptr0, outptr1;
@@ -259,7 +259,7 @@ h2v2_merged_upsample_565D_internal(j_decompress_ptr cinfo,
                                   JDIMENSION in_row_group_ctr,
                                   JSAMPARRAY output_buf)
 {
-  my_merged_upsample_ptr upsample = (my_merged_upsample_ptr)cinfo->upsample;
+  my_upsample_ptr upsample = (my_upsample_ptr)cinfo->upsample;
  register int y, cred, cgreen, cblue;
  int cb, cr;
  register JSAMPROW outptr0, outptr1;
@@ -4,7 +4,7 @@
 * This file was part of the Independent JPEG Group's software:
 * Copyright (C) 1994-1996, Thomas G. Lane.
 * libjpeg-turbo Modifications:
- * Copyright (C) 2011, 2015, 2020, D. R. Commander.
+ * Copyright (C) 2011, 2015, D. R. Commander.
 * For conditions of distribution and use, see the accompanying README.ijg
 * file.
 *
@@ -25,7 +25,7 @@ h2v1_merged_upsample_internal(j_decompress_ptr cinfo, JSAMPIMAGE input_buf,
                              JDIMENSION in_row_group_ctr,
                              JSAMPARRAY output_buf)
 {
-  my_merged_upsample_ptr upsample = (my_merged_upsample_ptr)cinfo->upsample;
+  my_upsample_ptr upsample = (my_upsample_ptr)cinfo->upsample;
  register int y, cred, cgreen, cblue;
  int cb, cr;
  register JSAMPROW outptr;
@@ -97,7 +97,7 @@ h2v2_merged_upsample_internal(j_decompress_ptr cinfo, JSAMPIMAGE input_buf,
                              JDIMENSION in_row_group_ctr,
                              JSAMPARRAY output_buf)
 {
-  my_merged_upsample_ptr upsample = (my_merged_upsample_ptr)cinfo->upsample;
+  my_upsample_ptr upsample = (my_upsample_ptr)cinfo->upsample;
  register int y, cred, cgreen, cblue;
  int cb, cr;
  register JSAMPROW outptr0, outptr1;
@@ -3,8 +3,8 @@
 *
 * This file was part of the Independent JPEG Group's software:
 * Copyright (C) 1995-1997, Thomas G. Lane.
- * libjpeg-turbo Modifications:
- * Copyright (C) 2020, D. R. Commander.
+ * It was modified by The libjpeg-turbo Project to include only code relevant
+ * to libjpeg-turbo.
 * For conditions of distribution and use, see the accompanying README.ijg
 * file.
 *
@@ -16,7 +16,6 @@
 #define JPEG_INTERNALS
 #include "jinclude.h"
 #include "jpeglib.h"
-#include "jpegcomp.h"


 /* Forward declarations */
@@ -4,11 +4,11 @@
 * This file was part of the Independent JPEG Group's software:
 * Copyright (C) 1991-1996, Thomas G. Lane.
 * libjpeg-turbo Modifications:
- * Copyright (C) 2015, 2020, D. R. Commander.
+ * Copyright (C) 2015, D. R. Commander.
 * For conditions of distribution and use, see the accompanying README.ijg
 * file.
 *
- * This file contains a slower but more accurate integer implementation of the
+ * This file contains a slow-but-accurate integer implementation of the
 * forward DCT (Discrete Cosine Transform).
 *
 * A 2-D DCT can be done by 1-D DCT on each row followed by 1-D DCT
@@ -5,11 +5,11 @@
 * Copyright (C) 1991-1998, Thomas G. Lane.
 * Modification developed 2002-2009 by Guido Vollbeding.
 * libjpeg-turbo Modifications:
- * Copyright (C) 2015, 2020, D. R. Commander.
+ * Copyright (C) 2015, D. R. Commander.
 * For conditions of distribution and use, see the accompanying README.ijg
 * file.
 *
- * This file contains a slower but more accurate integer implementation of the
+ * This file contains a slow-but-accurate integer implementation of the
 * inverse DCT (Discrete Cosine Transform).  In the IJG code, this routine
 * must also perform dequantization of the input coefficients.
 *
@@ -5,7 +5,7 @@
 * Copyright (C) 1991-1997, Thomas G. Lane.
 * Modified 1997-2009 by Guido Vollbeding.
 * libjpeg-turbo Modifications:
- * Copyright (C) 2009, 2011, 2014-2015, 2018, 2020, D. R. Commander.
+ * Copyright (C) 2009, 2011, 2014-2015, 2018, D. R. Commander.
 * For conditions of distribution and use, see the accompanying README.ijg
 * file.
 *
@@ -273,9 +273,9 @@ typedef int boolean;

 /* Capability options common to encoder and decoder: */

-#define DCT_ISLOW_SUPPORTED     /* accurate integer method */
-#define DCT_IFAST_SUPPORTED     /* less accurate int method [legacy feature] */
-#define DCT_FLOAT_SUPPORTED     /* floating-point method [legacy feature] */
+#define DCT_ISLOW_SUPPORTED     /* slow but accurate integer algorithm */
+#define DCT_IFAST_SUPPORTED     /* faster, less accurate integer method */
+#define DCT_FLOAT_SUPPORTED     /* floating-point: accurate, fast on fast HW */

 /* Encoder capability options: */

@@ -1,7 +1,7 @@
 /*
 * jpegcomp.h
 *
- * Copyright (C) 2010, 2020, D. R. Commander.
+ * Copyright (C) 2010, D. R. Commander.
 * For conditions of distribution and use, see the accompanying README.ijg
 * file.
 *
@@ -19,7 +19,6 @@
 #define _min_DCT_v_scaled_size  min_DCT_v_scaled_size
 #define _jpeg_width  jpeg_width
 #define _jpeg_height  jpeg_height
-#define JERR_ARITH_NOTIMPL  JERR_NOT_COMPILED
 #else
 #define _DCT_scaled_size  DCT_scaled_size
 #define _DCT_h_scaled_size  DCT_scaled_size
@@ -5,7 +5,7 @@
 * Copyright (C) 1991-1998, Thomas G. Lane.
 * Modified 2002-2009 by Guido Vollbeding.
 * libjpeg-turbo Modifications:
- * Copyright (C) 2009-2011, 2013-2014, 2016-2017, 2020, D. R. Commander.
+ * Copyright (C) 2009-2011, 2013-2014, 2016-2017, D. R. Commander.
 * Copyright (C) 2015, Google, Inc.
 * For conditions of distribution and use, see the accompanying README.ijg
 * file.
@@ -244,9 +244,9 @@ typedef enum {
 /* DCT/IDCT algorithm options. */

 typedef enum {
-  JDCT_ISLOW,             /* accurate integer method */
-  JDCT_IFAST,             /* less accurate integer method [legacy feature] */
-  JDCT_FLOAT              /* floating-point method [legacy feature] */
+  JDCT_ISLOW,             /* slow but accurate integer algorithm */
+  JDCT_IFAST,             /* faster, less accurate integer method */
+  JDCT_FLOAT              /* floating-point: accurate, fast on fast HW */
 } J_DCT_METHOD;

 #ifndef JDCT_DEFAULT            /* may be overridden in jconfig.h */
@@ -4,7 +4,7 @@
 * This file was part of the Independent JPEG Group's software:
 * Copyright (C) 1991-1996, Thomas G. Lane.
 * libjpeg-turbo Modifications:
- * Copyright (C) 2009, 2014-2015, 2020, D. R. Commander.
+ * Copyright (C) 2009, 2014-2015, D. R. Commander.
 * For conditions of distribution and use, see the accompanying README.ijg
 * file.
 *
@@ -1145,7 +1145,7 @@ start_pass_2_quant(j_decompress_ptr cinfo, boolean is_pre_scan)
  int i;

  /* Only F-S dithering or no dithering is supported. */
-  /* If user asks for ordered dither, give them F-S. */
+  /* If user asks for ordered dither, give him F-S. */
  if (cinfo->dither_mode != JDITHER_NONE)
    cinfo->dither_mode = JDITHER_FS;

@@ -1263,7 +1263,7 @@ jinit_2pass_quantizer(j_decompress_ptr cinfo)
    cquantize->sv_colormap = NULL;

  /* Only F-S dithering or no dithering is supported. */
-  /* If user asks for ordered dither, give them F-S. */
+  /* If user asks for ordered dither, give him F-S. */
  if (cinfo->dither_mode != JDITHER_NONE)
    cinfo->dither_mode = JDITHER_FS;

@@ -30,25 +30,23 @@
 * NOTE: It is our convention to place the authors in the following order:
 * - libjpeg-turbo authors (2009-) in descending order of the date of their
 *   most recent contribution to the project, then in ascending order of the
- *   date of their first contribution to the project, then in alphabetical
- *   order
+ *   date of their first contribution to the project
 * - Upstream authors in descending order of the date of the first inclusion of
 *   their code
 */

 #define JCOPYRIGHT \
  "Copyright (C) 2009-2020 D. R. Commander\n" \
-  "Copyright (C) 2015, 2020 Google, Inc.\n" \
-  "Copyright (C) 2019 Arm Limited\n" \
-  "Copyright (C) 2015-2016, 2018 Matthieu Darbois\n" \
  "Copyright (C) 2011-2016 Siarhei Siamashka\n" \
+  "Copyright (C) 2015-2016, 2018 Matthieu Darbois\n" \
  "Copyright (C) 2015 Intel Corporation\n" \
-  "Copyright (C) 2013-2014 Linaro Limited\n" \
+  "Copyright (C) 2015 Google, Inc.\n" \
  "Copyright (C) 2013-2014 MIPS Technologies, Inc.\n" \
-  "Copyright (C) 2009, 2012 Pierre Ossman for Cendio AB\n" \
+  "Copyright (C) 2013 Linaro Limited\n" \
  "Copyright (C) 2009-2011 Nokia Corporation and/or its subsidiary(-ies)\n" \
+  "Copyright (C) 2009 Pierre Ossman for Cendio AB\n" \
  "Copyright (C) 1999-2006 MIYASAKA Masaru\n" \
-  "Copyright (C) 1991-2017 Thomas G. Lane, Guido Vollbeding"
+  "Copyright (C) 1991-2016 Thomas G. Lane, Guido Vollbeding"

 #define JCOPYRIGHT_SHORT \
  "Copyright (C) 1991-2020 The libjpeg-turbo Project and many others"
@@ -19,7 +19,7 @@ endif()
 #         Define the library target:
 # ----------------------------------------------------------------------------------

-add_library(${JPEG_LIBRARY} STATIC ${OPENCV_3RDPARTY_EXCLUDE_FROM_ALL} ${lib_srcs} ${lib_hdrs})
+add_library(${JPEG_LIBRARY} STATIC ${lib_srcs} ${lib_hdrs})

 if(CV_GCC OR CV_CLANG)
  set_source_files_properties(jcdctmgr.c PROPERTIES COMPILE_FLAGS "-O1")
@@ -42,7 +42,7 @@ if(ENABLE_SOLUTION_FOLDERS)
 endif()

 if(NOT BUILD_SHARED_LIBS)
-  ocv_install_target(${JPEG_LIBRARY} EXPORT OpenCVModules ARCHIVE DESTINATION ${OPENCV_3P_LIB_INSTALL_PATH} COMPONENT dev OPTIONAL)
+  ocv_install_target(${JPEG_LIBRARY} EXPORT OpenCVModules ARCHIVE DESTINATION ${OPENCV_3P_LIB_INSTALL_PATH} COMPONENT dev)
 endif()

 ocv_install_3rdparty_licenses(libjpeg README)
@@ -74,7 +74,7 @@ if(MSVC)
  add_definitions(-D_CRT_SECURE_NO_DEPRECATE)
 endif(MSVC)

-add_library(${PNG_LIBRARY} STATIC ${OPENCV_3RDPARTY_EXCLUDE_FROM_ALL} ${lib_srcs} ${lib_hdrs})
+add_library(${PNG_LIBRARY} STATIC ${lib_srcs} ${lib_hdrs})
 target_link_libraries(${PNG_LIBRARY} ${ZLIB_LIBRARIES})

 ocv_warnings_disable(CMAKE_C_FLAGS -Wundef -Wcast-align -Wimplicit-fallthrough -Wunused-parameter -Wsign-compare)
@@ -92,7 +92,7 @@ if(ENABLE_SOLUTION_FOLDERS)
 endif()

 if(NOT BUILD_SHARED_LIBS)
-  ocv_install_target(${PNG_LIBRARY} EXPORT OpenCVModules ARCHIVE DESTINATION ${OPENCV_3P_LIB_INSTALL_PATH} COMPONENT dev OPTIONAL)
+  ocv_install_target(${PNG_LIBRARY} EXPORT OpenCVModules ARCHIVE DESTINATION ${OPENCV_3P_LIB_INSTALL_PATH} COMPONENT dev)
 endif()

 ocv_install_3rdparty_licenses(libpng LICENSE README)
@@ -20,8 +20,9 @@
 # Author: qtang@openailab.com or https://github.com/BUG1989
 #         qli@openailab.com
 #         sqfu@openailab.com
+#

-SET(TENGINE_COMMIT_VERSION "e89cf8870de2ff0a80cfe626c0b52b2a16fb302e")
+SET(TENGINE_COMMIT_VERSION "8a4c58e0e05cd850f4bb0936a330edc86dc0e28c")
 SET(OCV_TENGINE_DIR "${OpenCV_BINARY_DIR}/3rdparty/libtengine")
 SET(OCV_TENGINE_SOURCE_PATH "${OCV_TENGINE_DIR}/Tengine-${TENGINE_COMMIT_VERSION}")

@@ -31,10 +32,11 @@ IF(EXISTS "${OCV_TENGINE_SOURCE_PATH}")
 	SET(Tengine_FOUND ON)
 	SET(BUILD_TENGINE ON)
 ELSE()
-	SET(OCV_TENGINE_FILENAME "${TENGINE_COMMIT_VERSION}.zip")#name
-	SET(OCV_TENGINE_URL "https://github.com/OAID/Tengine/archive/") #url
-	SET(tengine_md5sum 23f61ebb1dd419f1207d8876496289c5) #md5sum
+	SET(OCV_TENGINE_FILENAME "${TENGINE_COMMIT_VERSION}.zip")#name2
+	SET(OCV_TENGINE_URL "https://github.com/OAID/Tengine/archive/") #url2
+	SET(tengine_md5sum f51ca8f3963faeeff3f019a6f6edc206) #md5sum2

+	#MESSAGE(STATUS "**** TENGINE DOWNLOAD BEGIN ****")
 	ocv_download(FILENAME ${OCV_TENGINE_FILENAME}
 						HASH ${tengine_md5sum}
 						URL
@@ -60,17 +62,24 @@ ENDIF()
 if(BUILD_TENGINE)
 	SET(HAVE_TENGINE 1)

-	if(NOT ANDROID)
+	# android system
+	if(ANDROID)
+	   if(${ANDROID_ABI} STREQUAL "armeabi-v7a")
+			   SET(CONFIG_ARCH_ARM32 ON)
+	   elseif(${ANDROID_ABI} STREQUAL "arm64-v8a")
+			   SET(CONFIG_ARCH_ARM64 ON)
+	   endif()
+	else()
 		# linux system
 		if(CMAKE_SYSTEM_PROCESSOR STREQUAL arm)
-			   SET(TENGINE_TOOLCHAIN_FLAG "-march=armv7-a")
+			   SET(CONFIG_ARCH_ARM32 ON)
 		elseif(CMAKE_SYSTEM_PROCESSOR STREQUAL aarch64) ## AARCH64
-			   SET(TENGINE_TOOLCHAIN_FLAG "-march=armv8-a")
+			   SET(CONFIG_ARCH_ARM64 ON)
 		endif()
 	endif()

 	SET(BUILT_IN_OPENCV ON) ## set for tengine compile discern .
-	SET(Tengine_INCLUDE_DIR  "${OCV_TENGINE_SOURCE_PATH}/include" CACHE INTERNAL "")
+	SET(Tengine_INCLUDE_DIR  "${OCV_TENGINE_SOURCE_PATH}/core/include" CACHE INTERNAL "")
 	if(EXISTS "${OCV_TENGINE_SOURCE_PATH}/CMakeLists.txt")
 		add_subdirectory("${OCV_TENGINE_SOURCE_PATH}" "${OCV_TENGINE_DIR}/build")
 	else()
@@ -239,9 +239,6 @@ if(HOST_BIG_ENDIAN)
 else()
  set(HOST_BIG_ENDIAN 0)
 endif()
-if(HOST_BIG_ENDIAN)
-  add_definitions(-DWORDS_BIGENDIAN)
-endif()

 # IEEE floating point
 set(HAVE_IEEEFP 1 CACHE STRING "IEEE floating point is available")
@@ -465,7 +462,7 @@ ocv_warnings_disable(CMAKE_CXX_FLAGS /wd4456 /wd4457 /wd4312) # vs2015

 ocv_warnings_disable(CMAKE_C_FLAGS /wd4267 /wd4244 /wd4018 /wd4311 /wd4312)

-add_library(${TIFF_LIBRARY} STATIC ${OPENCV_3RDPARTY_EXCLUDE_FROM_ALL} ${lib_srcs})
+add_library(${TIFF_LIBRARY} STATIC ${lib_srcs})
 target_link_libraries(${TIFF_LIBRARY} ${ZLIB_LIBRARIES})

 set_target_properties(${TIFF_LIBRARY}
@@ -482,7 +479,7 @@ if(ENABLE_SOLUTION_FOLDERS)
 endif()

 if(NOT BUILD_SHARED_LIBS)
-  ocv_install_target(${TIFF_LIBRARY} EXPORT OpenCVModules ARCHIVE DESTINATION ${OPENCV_3P_LIB_INSTALL_PATH} COMPONENT dev OPTIONAL)
+  ocv_install_target(${TIFF_LIBRARY} EXPORT OpenCVModules ARCHIVE DESTINATION ${OPENCV_3P_LIB_INSTALL_PATH} COMPONENT dev)
 endif()

 ocv_install_3rdparty_licenses(libtiff COPYRIGHT)
@@ -24,10 +24,6 @@
 #ifndef _LIBPORT_
 #define	_LIBPORT_

-#if defined(HAVE_CONFIG_H)
-#  include <tif_config.h>
-#endif
-
 int getopt(int argc, char * const argv[], const char *optstring);
 extern   char *optarg;
 extern   int opterr;
@@ -40,16 +36,16 @@ int strcasecmp(const char *s1, const char *s2);
 #  define HAVE_GETOPT 1
 #endif

-#if !defined(HAVE_STRTOL)
+#if HAVE_STRTOL
 long strtol(const char *nptr, char **endptr, int base);
 #endif
-#if !defined(HAVE_STRTOLL)
+#if HAVE_STRTOLL
 long long strtoll(const char *nptr, char **endptr, int base);
 #endif
-#if !defined(HAVE_STRTOUL)
+#if HAVE_STRTOUL
 unsigned long strtoul(const char *nptr, char **endptr, int base);
 #endif
-#if !defined(HAVE_STRTOULL)
+#if HAVE_STRTOULL
 unsigned long long strtoull(const char *nptr, char **endptr, int base);
 #endif

@@ -35,61 +35,27 @@
 uint32
 _TIFFMultiply32(TIFF* tif, uint32 first, uint32 second, const char* where)
 {
-	if (second && first > TIFF_UINT32_MAX / second) {
+	uint32 bytes = first * second;
+
+	if (second && bytes / second != first) {
 		TIFFErrorExt(tif->tif_clientdata, where, "Integer overflow in %s", where);
-		return 0;
+		bytes = 0;
 	}

-	return first * second;
+	return bytes;
 }

 uint64
 _TIFFMultiply64(TIFF* tif, uint64 first, uint64 second, const char* where)
 {
-	if (second && first > TIFF_UINT64_MAX / second) {
+	uint64 bytes = first * second;
+
+	if (second && bytes / second != first) {
 		TIFFErrorExt(tif->tif_clientdata, where, "Integer overflow in %s", where);
-		return 0;
+		bytes = 0;
 	}

-	return first * second;
-}
-
-tmsize_t
-_TIFFMultiplySSize(TIFF* tif, tmsize_t first, tmsize_t second, const char* where)
-{
-    if( first <= 0 || second <= 0 )
-    {
-        if( tif != NULL && where != NULL )
-        {
-            TIFFErrorExt(tif->tif_clientdata, where,
-                        "Invalid argument to _TIFFMultiplySSize() in %s", where);
-        }
-        return 0;
-    }
-
-    if( first > TIFF_TMSIZE_T_MAX / second )
-    {
-        if( tif != NULL && where != NULL )
-        {
-            TIFFErrorExt(tif->tif_clientdata, where,
-                        "Integer overflow in %s", where);
-        }
-        return 0;
-    }
-    return first * second;
-}
-
-tmsize_t _TIFFCastUInt64ToSSize(TIFF* tif, uint64 val, const char* module)
-{
-    if( val > (uint64)TIFF_TMSIZE_T_MAX )
-    {
-        if( tif != NULL && module != NULL )
-        {
-            TIFFErrorExt(tif->tif_clientdata,module,"Integer overflow");
-        }
-        return 0;
-    }
-    return (tmsize_t)val;
+	return bytes;
 }

 void*
@@ -97,14 +63,13 @@ _TIFFCheckRealloc(TIFF* tif, void* buffer,
 		  tmsize_t nmemb, tmsize_t elem_size, const char* what)
 {
 	void* cp = NULL;
-        tmsize_t count = _TIFFMultiplySSize(tif, nmemb, elem_size, NULL);
+	tmsize_t bytes = nmemb * elem_size;
+
 	/*
-	 * Check for integer overflow.
+	 * XXX: Check for integer overflow.
 	 */
-	if (count != 0)
-	{
-		cp = _TIFFrealloc(buffer, count);
-	}
+	if (nmemb && elem_size && bytes / elem_size == nmemb)
+		cp = _TIFFrealloc(buffer, bytes);

 	if (cp == NULL) {
 		TIFFErrorExt(tif->tif_clientdata, tif->tif_name,
@@ -270,7 +235,7 @@ TIFFVGetFieldDefaulted(TIFF* tif, uint32 tag, va_list ap)
 		return (1);
 	case TIFFTAG_EXTRASAMPLES:
 		*va_arg(ap, uint16 *) = td->td_extrasamples;
-		*va_arg(ap, const uint16 **) = td->td_sampleinfo;
+		*va_arg(ap, uint16 **) = td->td_sampleinfo;
 		return (1);
 	case TIFFTAG_MATTEING:
 		*va_arg(ap, uint16 *) =
@@ -292,8 +257,8 @@ TIFFVGetFieldDefaulted(TIFF* tif, uint32 tag, va_list ap)
 	case TIFFTAG_YCBCRCOEFFICIENTS:
 		{
 			/* defaults are from CCIR Recommendation 601-1 */
-			static const float ycbcrcoeffs[] = { 0.299f, 0.587f, 0.114f };
-			*va_arg(ap, const float **) = ycbcrcoeffs;
+			static float ycbcrcoeffs[] = { 0.299f, 0.587f, 0.114f };
+			*va_arg(ap, float **) = ycbcrcoeffs;
 			return 1;
 		}
 	case TIFFTAG_YCBCRSUBSAMPLING:
@@ -305,14 +270,14 @@ TIFFVGetFieldDefaulted(TIFF* tif, uint32 tag, va_list ap)
 		return (1);
 	case TIFFTAG_WHITEPOINT:
 		{
+			static float whitepoint[2];
+
 			/* TIFF 6.0 specification tells that it is no default
 			   value for the WhitePoint, but AdobePhotoshop TIFF
 			   Technical Note tells that it should be CIE D50. */
-			static const float whitepoint[] = {
-						D50_X0 / (D50_X0 + D50_Y0 + D50_Z0),
-						D50_Y0 / (D50_X0 + D50_Y0 + D50_Z0)
-			};
-			*va_arg(ap, const float **) = whitepoint;
+			whitepoint[0] =	D50_X0 / (D50_X0 + D50_Y0 + D50_Z0);
+			whitepoint[1] =	D50_Y0 / (D50_X0 + D50_Y0 + D50_Z0);
+			*va_arg(ap, float **) = whitepoint;
 			return 1;
 		}
 	case TIFFTAG_TRANSFERFUNCTION:
@@ -321,16 +286,16 @@ TIFFVGetFieldDefaulted(TIFF* tif, uint32 tag, va_list ap)
 			TIFFErrorExt(tif->tif_clientdata, tif->tif_name, "No space for \"TransferFunction\" tag");
 			return (0);
 		}
-		*va_arg(ap, const uint16 **) = td->td_transferfunction[0];
+		*va_arg(ap, uint16 **) = td->td_transferfunction[0];
 		if (td->td_samplesperpixel - td->td_extrasamples > 1) {
-			*va_arg(ap, const uint16 **) = td->td_transferfunction[1];
-			*va_arg(ap, const uint16 **) = td->td_transferfunction[2];
+			*va_arg(ap, uint16 **) = td->td_transferfunction[1];
+			*va_arg(ap, uint16 **) = td->td_transferfunction[2];
 		}
 		return (1);
 	case TIFFTAG_REFERENCEBLACKWHITE:
 		if (!td->td_refblackwhite && !TIFFDefaultRefBlackWhite(td))
 			return (0);
-		*va_arg(ap, const float **) = td->td_refblackwhite;
+		*va_arg(ap, float **) = td->td_refblackwhite;
 		return (1);
 	}
 	return 0;
@@ -264,7 +264,7 @@ TIFFGetConfiguredCODECs()
 			return NULL;
 		}
 		codecs = new_codecs;
-		_TIFFmemcpy(codecs + i - 1, cd->info, sizeof(TIFFCodec));
+		_TIFFmemcpy(codecs + i - 1, cd, sizeof(TIFFCodec));
 		i++;
 	}
 	for (c = _TIFFBuiltinCODECS; c->name; c++) {
@@ -29,7 +29,6 @@
 * (and also some miscellaneous stuff)
 */
 #include "tiffiop.h"
-#include <float.h>	/*--: for Rational2Double */

 /*
 * These are used in the backwards compatibility code...
@@ -47,8 +46,8 @@ setByteArray(void** vpp, void* vp, size_t nmemb, size_t elem_size)
 		*vpp = 0;
 	}
 	if (vp) {
-		tmsize_t bytes = _TIFFMultiplySSize(NULL, nmemb, elem_size, NULL);
-		if (bytes)
+		tmsize_t bytes = (tmsize_t)(nmemb * elem_size);
+		if (elem_size && bytes / elem_size == nmemb)
 			*vpp = (void*) _TIFFmalloc(bytes);
 		if (*vpp)
 			_TIFFmemcpy(*vpp, vp, bytes);
@@ -124,7 +123,7 @@ setExtraSamples(TIFF* tif, va_list ap, uint32* v)
        {
                TIFFWarningExt(tif->tif_clientdata,module,
                    "ExtraSamples tag value is changing, "
-                    "but TransferFunction was read with a different value. Canceling it");
+                    "but TransferFunction was read with a different value. Cancelling it");
                TIFFClrFieldBit(tif,FIELD_TRANSFERFUNCTION);
                _TIFFfree(td->td_transferfunction[0]);
                td->td_transferfunction[0] = NULL;
@@ -206,7 +205,7 @@ _TIFFVSetField(TIFF* tif, uint32 tag, va_list ap)
 		/*
 		 * If the data require post-decoding processing to byte-swap
 		 * samples, set it up here.  Note that since tags are required
-		 * to be ordered, compression code can override this behavior
+		 * to be ordered, compression code can override this behaviour
 		 * in the setup method if it wants to roll the post decoding
 		 * work in with its normal work.
 		 */
@@ -276,7 +275,7 @@ _TIFFVSetField(TIFF* tif, uint32 tag, va_list ap)
            {
                TIFFWarningExt(tif->tif_clientdata,module,
                    "SamplesPerPixel tag value is changing, "
-                    "but SMinSampleValue tag was read with a different value. Canceling it");
+                    "but SMinSampleValue tag was read with a different value. Cancelling it");
                TIFFClrFieldBit(tif,FIELD_SMINSAMPLEVALUE);
                _TIFFfree(td->td_sminsamplevalue);
                td->td_sminsamplevalue = NULL;
@@ -285,7 +284,7 @@ _TIFFVSetField(TIFF* tif, uint32 tag, va_list ap)
            {
                TIFFWarningExt(tif->tif_clientdata,module,
                    "SamplesPerPixel tag value is changing, "
-                    "but SMaxSampleValue tag was read with a different value. Canceling it");
+                    "but SMaxSampleValue tag was read with a different value. Cancelling it");
                TIFFClrFieldBit(tif,FIELD_SMAXSAMPLEVALUE);
                _TIFFfree(td->td_smaxsamplevalue);
                td->td_smaxsamplevalue = NULL;
@@ -297,7 +296,7 @@ _TIFFVSetField(TIFF* tif, uint32 tag, va_list ap)
            {
                    TIFFWarningExt(tif->tif_clientdata,module,
                        "SamplesPerPixel tag value is changing, "
-                        "but TransferFunction was read with a different value. Canceling it");
+                        "but TransferFunction was read with a different value. Cancelling it");
                    TIFFClrFieldBit(tif,FIELD_TRANSFERFUNCTION);
                    _TIFFfree(td->td_transferfunction[0]);
                    td->td_transferfunction[0] = NULL;
@@ -394,7 +393,7 @@ _TIFFVSetField(TIFF* tif, uint32 tag, va_list ap)
 			if (tif->tif_mode != O_RDONLY)
 				goto badvalue32;
 			TIFFWarningExt(tif->tif_clientdata, tif->tif_name,
-				"Nonstandard tile width %u, convert file", v32);
+				"Nonstandard tile width %d, convert file", v32);
 		}
 		td->td_tilewidth = v32;
 		tif->tif_flags |= TIFF_ISTILED;
@@ -405,7 +404,7 @@ _TIFFVSetField(TIFF* tif, uint32 tag, va_list ap)
 			if (tif->tif_mode != O_RDONLY)
 				goto badvalue32;
 			TIFFWarningExt(tif->tif_clientdata, tif->tif_name,
-			    "Nonstandard tile length %u, convert file", v32);
+			    "Nonstandard tile length %d, convert file", v32);
 		}
 		td->td_tilelength = v32;
 		tif->tif_flags |= TIFF_ISTILED;
@@ -560,10 +559,6 @@ _TIFFVSetField(TIFF* tif, uint32 tag, va_list ap)
 		 * Set custom value ... save a copy of the custom tag value.
 		 */
 		tv_size = _TIFFDataSize(fip->field_type);
-		/*--: Rational2Double: For Rationals evaluate "set_field_type" to determine internal storage size. */
-		if (fip->field_type == TIFF_RATIONAL || fip->field_type == TIFF_SRATIONAL) {
-			tv_size = _TIFFSetGetFieldSize(fip->set_field_type);
-		}
 		if (tv_size == 0) {
 			status = 0;
 			TIFFErrorExt(tif->tif_clientdata, module,
@@ -643,7 +638,6 @@ _TIFFVSetField(TIFF* tif, uint32 tag, va_list ap)
 				  || fip->field_writecount == TIFF_VARIABLE2
 				  || fip->field_writecount == TIFF_SPP
 				  || tv->count > 1) {
-			  /*--: Rational2Double: For Rationals tv_size is set above to 4 or 8 according to fip->set_field_type! */
 				_TIFFmemcpy(tv->value, va_arg(ap, void *),
 				    tv->count * tv_size);
 			} else {
@@ -704,22 +698,6 @@ _TIFFVSetField(TIFF* tif, uint32 tag, va_list ap)
 					break;
 				case TIFF_RATIONAL:
 				case TIFF_SRATIONAL:
-					/*-- Rational2Double: For Rationals tv_size is set above to 4 or 8 according to fip->set_field_type! */
-					{
-						if (tv_size == 8) {
-							double v2 = va_arg(ap, double);
-							_TIFFmemcpy(val, &v2, tv_size);
-						} else {
-							/*-- default should be tv_size == 4 */
-							float v3 = (float)va_arg(ap, double);
-							_TIFFmemcpy(val, &v3, tv_size);
-							/*-- ToDo: After Testing, this should be removed and tv_size==4 should be set as default. */
-							if (tv_size != 4) {
-								TIFFErrorExt(0,"TIFFLib: _TIFFVSetField()", "Rational2Double: .set_field_type in not 4 but %d", tv_size); 
-							}
-						}
-					}
-					break;
 				case TIFF_FLOAT:
 					{
 						float v2 = _TIFFClampDoubleToFloat(va_arg(ap, double));
@@ -1033,19 +1011,19 @@ _TIFFVGetField(TIFF* tif, uint32 tag, va_list ap)
 			*va_arg(ap, uint16*) = td->td_halftonehints[1];
 			break;
 		case TIFFTAG_COLORMAP:
-			*va_arg(ap, const uint16**) = td->td_colormap[0];
-			*va_arg(ap, const uint16**) = td->td_colormap[1];
-			*va_arg(ap, const uint16**) = td->td_colormap[2];
+			*va_arg(ap, uint16**) = td->td_colormap[0];
+			*va_arg(ap, uint16**) = td->td_colormap[1];
+			*va_arg(ap, uint16**) = td->td_colormap[2];
 			break;
 		case TIFFTAG_STRIPOFFSETS:
 		case TIFFTAG_TILEOFFSETS:
 			_TIFFFillStriles( tif );
-			*va_arg(ap, const uint64**) = td->td_stripoffset_p;
+			*va_arg(ap, uint64**) = td->td_stripoffset;
 			break;
 		case TIFFTAG_STRIPBYTECOUNTS:
 		case TIFFTAG_TILEBYTECOUNTS:
 			_TIFFFillStriles( tif );
-			*va_arg(ap, const uint64**) = td->td_stripbytecount_p;
+			*va_arg(ap, uint64**) = td->td_stripbytecount;
 			break;
 		case TIFFTAG_MATTEING:
 			*va_arg(ap, uint16*) =
@@ -1054,7 +1032,7 @@ _TIFFVGetField(TIFF* tif, uint32 tag, va_list ap)
 			break;
 		case TIFFTAG_EXTRASAMPLES:
 			*va_arg(ap, uint16*) = td->td_extrasamples;
-			*va_arg(ap, const uint16**) = td->td_sampleinfo;
+			*va_arg(ap, uint16**) = td->td_sampleinfo;
 			break;
 		case TIFFTAG_TILEWIDTH:
 			*va_arg(ap, uint32*) = td->td_tilewidth;
@@ -1089,7 +1067,7 @@ _TIFFVGetField(TIFF* tif, uint32 tag, va_list ap)
 			break;
 		case TIFFTAG_SUBIFD:
 			*va_arg(ap, uint16*) = td->td_nsubifd;
-			*va_arg(ap, const uint64**) = td->td_subifd;
+			*va_arg(ap, uint64**) = td->td_subifd;
 			break;
 		case TIFFTAG_YCBCRPOSITIONING:
 			*va_arg(ap, uint16*) = td->td_ycbcrpositioning;
@@ -1099,20 +1077,20 @@ _TIFFVGetField(TIFF* tif, uint32 tag, va_list ap)
 			*va_arg(ap, uint16*) = td->td_ycbcrsubsampling[1];
 			break;
 		case TIFFTAG_TRANSFERFUNCTION:
-			*va_arg(ap, const uint16**) = td->td_transferfunction[0];
+			*va_arg(ap, uint16**) = td->td_transferfunction[0];
 			if (td->td_samplesperpixel - td->td_extrasamples > 1) {
-				*va_arg(ap, const uint16**) = td->td_transferfunction[1];
-				*va_arg(ap, const uint16**) = td->td_transferfunction[2];
+				*va_arg(ap, uint16**) = td->td_transferfunction[1];
+				*va_arg(ap, uint16**) = td->td_transferfunction[2];
 			} else {
-				*va_arg(ap, const uint16**) = NULL;
-				*va_arg(ap, const uint16**) = NULL;
+				*va_arg(ap, uint16**) = NULL;
+				*va_arg(ap, uint16**) = NULL;
 			}
 			break;
 		case TIFFTAG_REFERENCEBLACKWHITE:
-			*va_arg(ap, const float**) = td->td_refblackwhite;
+			*va_arg(ap, float**) = td->td_refblackwhite;
 			break;
 		case TIFFTAG_INKNAMES:
-			*va_arg(ap, const char**) = td->td_inknames;
+			*va_arg(ap, char**) = td->td_inknames;
 			break;
 		default:
 			{
@@ -1154,7 +1132,7 @@ _TIFFVGetField(TIFF* tif, uint32 tag, va_list ap)
 							*va_arg(ap, uint32*) = (uint32)tv->count;
 						else  /* Assume TIFF_VARIABLE */
 							*va_arg(ap, uint16*) = (uint16)tv->count;
-						*va_arg(ap, const void **) = tv->value;
+						*va_arg(ap, void **) = tv->value;
 						ret_val = 1;
 					} else if (fip->field_tag == TIFFTAG_DOTRANGE
 						   && strcmp(fip->field_name,"DotRange") == 0) {
@@ -1222,23 +1200,6 @@ _TIFFVGetField(TIFF* tif, uint32 tag, va_list ap)
 								break;
 							case TIFF_RATIONAL:
 							case TIFF_SRATIONAL:
-								{
-									/*-- Rational2Double: For Rationals evaluate "set_field_type" to determine internal storage size and return value size. */
-									int tv_size = _TIFFSetGetFieldSize(fip->set_field_type);
-									if (tv_size == 8) {
-										*va_arg(ap, double*) = *(double *)val;
-										ret_val = 1;
-									} else {
-										/*-- default should be tv_size == 4  */
-										*va_arg(ap, float*) = *(float *)val;
-										ret_val = 1;
-										/*-- ToDo: After Testing, this should be removed and tv_size==4 should be set as default. */
-										if (tv_size != 4) {
-											TIFFErrorExt(0,"TIFFLib: _TIFFVGetField()", "Rational2Double: .set_field_type in not 4 but %d", tv_size); 
-										}
-									}
-								}
-								break;
 							case TIFF_FLOAT:
 								*va_arg(ap, float*) =
 									*(float *)val;
@@ -1321,9 +1282,8 @@ TIFFFreeDirectory(TIFF* tif)
 	CleanupField(td_transferfunction[0]);
 	CleanupField(td_transferfunction[1]);
 	CleanupField(td_transferfunction[2]);
-	CleanupField(td_stripoffset_p);
-	CleanupField(td_stripbytecount_p);
-        td->td_stripoffsetbyteallocsize = 0;
+	CleanupField(td_stripoffset);
+	CleanupField(td_stripbytecount);
 	TIFFClrFieldBit(tif, FIELD_YCBCRSUBSAMPLING);
 	TIFFClrFieldBit(tif, FIELD_YCBCRPOSITIONING);

@@ -1336,8 +1296,10 @@ TIFFFreeDirectory(TIFF* tif)
 	td->td_customValueCount = 0;
 	CleanupField(td_customValues);

+#if defined(DEFER_STRILE_LOAD)
        _TIFFmemset( &(td->td_stripoffset_entry), 0, sizeof(TIFFDirEntry));
        _TIFFmemset( &(td->td_stripbytecount_entry), 0, sizeof(TIFFDirEntry));
+#endif        
 }
 #undef CleanupField

@@ -1403,17 +1365,6 @@ TIFFCreateEXIFDirectory(TIFF* tif)
 	return TIFFCreateCustomDirectory(tif, exifFieldArray);
 }

-/*
- * Creates the EXIF GPS custom directory 
- */
-int
-TIFFCreateGPSDirectory(TIFF* tif)
-{
-	const TIFFFieldArray* gpsFieldArray;
-	gpsFieldArray = _TIFFGetGpsFields();
-	return TIFFCreateCustomDirectory(tif, gpsFieldArray);
-}
-
 /*
 * Setup a default directory structure.
 */
@@ -1436,9 +1387,7 @@ TIFFDefaultDirectory(TIFF* tif)
 	td->td_tilewidth = 0;
 	td->td_tilelength = 0;
 	td->td_tiledepth = 1;
-#ifdef STRIPBYTECOUNTSORTED_UNUSED
 	td->td_stripbytecountsorted = 1; /* Our own arrays always sorted. */  
-#endif
 	td->td_resolutionunit = RESUNIT_INCH;
 	td->td_sampleformat = SAMPLEFORMAT_UINT;
 	td->td_imagedepth = 1;
@@ -58,7 +58,6 @@ typedef struct {
 		uint32 toff_long;
 		uint64 toff_long8;
 	} tdir_offset;		/* either offset or the data itself if fits */
-	uint8  tdir_ignore;	/* flag status to ignore tag when parsing tags in tif_dirread.c */
 } TIFFDirEntry;

 /*
@@ -98,14 +97,13 @@ typedef struct {
 	 * number of striles */
 	uint32  td_stripsperimage;  
 	uint32  td_nstrips;              /* size of offset & bytecount arrays */
-	uint64* td_stripoffset_p;        /* should be accessed with TIFFGetStrileOffset */
-	uint64* td_stripbytecount_p;     /* should be accessed with TIFFGetStrileByteCount */
-        uint32  td_stripoffsetbyteallocsize; /* number of elements currently allocated for td_stripoffset/td_stripbytecount. Only used if TIFF_LAZYSTRILELOAD is set */
-#ifdef STRIPBYTECOUNTSORTED_UNUSED
+	uint64* td_stripoffset;
+	uint64* td_stripbytecount;
 	int     td_stripbytecountsorted; /* is the bytecount array sorted ascending? */
-#endif
+#if defined(DEFER_STRILE_LOAD)
        TIFFDirEntry td_stripoffset_entry;    /* for deferred loading */
        TIFFDirEntry td_stripbytecount_entry; /* for deferred loading */
+#endif
 	uint16  td_nsubifd;
 	uint64* td_subifd;
 	/* YCbCr parameters */
@@ -120,8 +118,6 @@ typedef struct {

 	int     td_customValueCount;
        TIFFTagValue *td_customValues;
-
-        unsigned char td_deferstrilearraywriting; /* see TIFFDeferStrileArrayWriting() */
 } TIFFDirectory;

 /*
@@ -261,7 +257,6 @@ extern "C" {

 extern const TIFFFieldArray* _TIFFGetFields(void);
 extern const TIFFFieldArray* _TIFFGetExifFields(void);
-extern const TIFFFieldArray* _TIFFGetGpsFields(void);
 extern void _TIFFSetupFields(TIFF* tif, const TIFFFieldArray* infoarray);
 extern void _TIFFPrintFieldInfo(TIFF*, FILE*);

@@ -270,7 +265,6 @@ extern int _TIFFFillStriles(TIFF*);
 typedef enum {
 	tfiatImage,
 	tfiatExif,
-	tfiatGps,		/* EXIF-GPS fields array type */
 	tfiatOther
 } TIFFFieldArrayType;

@@ -47,19 +47,9 @@
 #endif
 static const TIFFFieldArray tiffFieldArray;
 static const TIFFFieldArray exifFieldArray;
-static const TIFFFieldArray gpsFieldArray;
 #ifdef _MSC_VER
 #pragma warning( pop )
 #endif
-/*--: Rational2Double: --
- * The Rational2Double upgraded libtiff functionality allows the definition and achievement of true double-precision accuracy
- * for TIFF tags of RATIONAL type and field_bit=FIELD_CUSTOM using the set_field_type = TIFF_SETGET_DOUBLE.
- * Unfortunately, that changes the old implemented interface for TIFFGetField().
- * In order to keep the old TIFFGetField() interface behavior those tags have to be redefined with set_field_type = TIFF_SETGET_FLOAT!
- *
- *  Rational custom arrays are already defined as _Cxx_FLOAT, thus can stay.
- *
- */

 static const TIFFField
 tiffFields[] = {
@@ -85,12 +75,12 @@ tiffFields[] = {
 	{ TIFFTAG_STRIPBYTECOUNTS, -1, -1, TIFF_LONG8, 0, TIFF_SETGET_UNDEFINED, TIFF_SETGET_UNDEFINED, FIELD_STRIPBYTECOUNTS, 0, 0, "StripByteCounts", NULL },
 	{ TIFFTAG_MINSAMPLEVALUE, -2, -1, TIFF_SHORT, 0, TIFF_SETGET_UINT16, TIFF_SETGET_UNDEFINED, FIELD_MINSAMPLEVALUE, 1, 0, "MinSampleValue", NULL },
 	{ TIFFTAG_MAXSAMPLEVALUE, -2, -1, TIFF_SHORT, 0, TIFF_SETGET_UINT16, TIFF_SETGET_UNDEFINED, FIELD_MAXSAMPLEVALUE, 1, 0, "MaxSampleValue", NULL },
-	{ TIFFTAG_XRESOLUTION, 1, 1, TIFF_RATIONAL, 0, TIFF_SETGET_FLOAT, TIFF_SETGET_UNDEFINED, FIELD_RESOLUTION, 1, 0, "XResolution", NULL },
-	{ TIFFTAG_YRESOLUTION, 1, 1, TIFF_RATIONAL, 0, TIFF_SETGET_FLOAT, TIFF_SETGET_UNDEFINED, FIELD_RESOLUTION, 1, 0, "YResolution", NULL },
+	{ TIFFTAG_XRESOLUTION, 1, 1, TIFF_RATIONAL, 0, TIFF_SETGET_DOUBLE, TIFF_SETGET_UNDEFINED, FIELD_RESOLUTION, 1, 0, "XResolution", NULL },
+	{ TIFFTAG_YRESOLUTION, 1, 1, TIFF_RATIONAL, 0, TIFF_SETGET_DOUBLE, TIFF_SETGET_UNDEFINED, FIELD_RESOLUTION, 1, 0, "YResolution", NULL },
 	{ TIFFTAG_PLANARCONFIG, 1, 1, TIFF_SHORT, 0, TIFF_SETGET_UINT16, TIFF_SETGET_UNDEFINED, FIELD_PLANARCONFIG, 0, 0, "PlanarConfiguration", NULL },
 	{ TIFFTAG_PAGENAME, -1, -1, TIFF_ASCII, 0, TIFF_SETGET_ASCII, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "PageName", NULL },
-	{ TIFFTAG_XPOSITION, 1, 1, TIFF_RATIONAL, 0, TIFF_SETGET_FLOAT, TIFF_SETGET_UNDEFINED, FIELD_POSITION, 1, 0, "XPosition", NULL },
-	{ TIFFTAG_YPOSITION, 1, 1, TIFF_RATIONAL, 0, TIFF_SETGET_FLOAT, TIFF_SETGET_UNDEFINED, FIELD_POSITION, 1, 0, "YPosition", NULL },
+	{ TIFFTAG_XPOSITION, 1, 1, TIFF_RATIONAL, 0, TIFF_SETGET_DOUBLE, TIFF_SETGET_UNDEFINED, FIELD_POSITION, 1, 0, "XPosition", NULL },
+	{ TIFFTAG_YPOSITION, 1, 1, TIFF_RATIONAL, 0, TIFF_SETGET_DOUBLE, TIFF_SETGET_UNDEFINED, FIELD_POSITION, 1, 0, "YPosition", NULL },
 	{ TIFFTAG_FREEOFFSETS, -1, -1, TIFF_LONG8, 0, TIFF_SETGET_UNDEFINED, TIFF_SETGET_UNDEFINED, FIELD_IGNORE, 0, 0, "FreeOffsets", NULL },
 	{ TIFFTAG_FREEBYTECOUNTS, -1, -1, TIFF_LONG8, 0, TIFF_SETGET_UNDEFINED, TIFF_SETGET_UNDEFINED, FIELD_IGNORE, 0, 0, "FreeByteCounts", NULL },
 	{ TIFFTAG_GRAYRESPONSEUNIT, 1, 1, TIFF_SHORT, 0, TIFF_SETGET_UNDEFINED, TIFF_SETGET_UNDEFINED, FIELD_IGNORE, 1, 0, "GrayResponseUnit", NULL },
@@ -145,18 +135,14 @@ tiffFields[] = {
 	{ TIFFTAG_PIXAR_MATRIX_WORLDTOSCREEN, 16, 16, TIFF_FLOAT, 0, TIFF_SETGET_C0_FLOAT, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "MatrixWorldToScreen", NULL },
 	{ TIFFTAG_PIXAR_MATRIX_WORLDTOCAMERA, 16, 16, TIFF_FLOAT, 0, TIFF_SETGET_C0_FLOAT, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "MatrixWorldToCamera", NULL },
 	{ TIFFTAG_CFAREPEATPATTERNDIM, 2, 2, TIFF_SHORT, 0, TIFF_SETGET_C0_UINT16, TIFF_SETGET_UNDEFINED,	FIELD_CUSTOM, 0,	0,	"CFARepeatPatternDim", NULL },
-	{ TIFFTAG_CFAPATTERN, -1, -1, TIFF_BYTE, 0, TIFF_SETGET_C16_UINT8, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 0, 1, "CFAPattern" , NULL},
+	{ TIFFTAG_CFAPATTERN,	4, 4,	TIFF_BYTE, 0, TIFF_SETGET_C0_UINT8, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 0,	0,	"CFAPattern" , NULL},
 	{ TIFFTAG_COPYRIGHT, -1, -1, TIFF_ASCII, 0, TIFF_SETGET_ASCII, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "Copyright", NULL },
 	/* end Pixar tags */
-	{ TIFFTAG_RICHTIFFIPTC, -3, -3, TIFF_UNDEFINED, 0, TIFF_SETGET_C32_UINT8, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 0, 1, "RichTIFFIPTC", NULL },
+	{ TIFFTAG_RICHTIFFIPTC, -3, -3, TIFF_LONG, 0, TIFF_SETGET_C32_UINT32, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 0, 1, "RichTIFFIPTC", NULL },
 	{ TIFFTAG_PHOTOSHOP, -3, -3, TIFF_BYTE, 0, TIFF_SETGET_C32_UINT8, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 0, 1, "Photoshop", NULL },
-	/*--: EXIFIFD and GPSIFD specified as TIFF_LONG by Aware-Systems and not TIFF_IFD8 as in original LibTiff.
-	 *    However, for IFD-like tags, libtiff uses the data type TIFF_IFD8 in tiffFields[]-tag definition combined with
-	 *    a special handling procedure in order to write either a 32-bit value and the TIFF_IFD type-id into ClassicTIFF files 
-	 *    or a 64-bit value and the TIFF_IFD8 type-id into BigTIFF files. */
-	{ TIFFTAG_EXIFIFD, 1, 1, TIFF_IFD8, 0, TIFF_SETGET_IFD8, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "EXIFIFDOffset", (TIFFFieldArray*) &exifFieldArray },
+	{ TIFFTAG_EXIFIFD, 1, 1, TIFF_IFD8, 0, TIFF_SETGET_IFD8, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 0, 0, "EXIFIFDOffset", (TIFFFieldArray*) &exifFieldArray },
 	{ TIFFTAG_ICCPROFILE, -3, -3, TIFF_UNDEFINED, 0, TIFF_SETGET_C32_UINT8, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 0, 1, "ICC Profile", NULL },
-	{ TIFFTAG_GPSIFD, 1, 1, TIFF_IFD8, 0, TIFF_SETGET_IFD8, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "GPSIFDOffset", (TIFFFieldArray*) &gpsFieldArray },
+	{ TIFFTAG_GPSIFD, 1, 1, TIFF_IFD8, 0, TIFF_SETGET_IFD8, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 0, 0, "GPSIFDOffset", NULL },
 	{ TIFFTAG_FAXRECVPARAMS, 1, 1, TIFF_LONG, 0, TIFF_SETGET_UINT32, TIFF_SETGET_UINT32, FIELD_CUSTOM, TRUE, FALSE, "FaxRecvParams", NULL },
 	{ TIFFTAG_FAXSUBADDRESS, -1, -1, TIFF_ASCII, 0, TIFF_SETGET_ASCII, TIFF_SETGET_ASCII, FIELD_CUSTOM, TRUE, FALSE, "FaxSubAddress", NULL },
 	{ TIFFTAG_FAXRECVTIME, 1, 1, TIFF_LONG, 0, TIFF_SETGET_UINT32, TIFF_SETGET_UINT32, FIELD_CUSTOM, TRUE, FALSE, "FaxRecvTime", NULL },
@@ -177,7 +163,7 @@ tiffFields[] = {
 	{ TIFFTAG_BLACKLEVELDELTAV, -1, -1, TIFF_SRATIONAL, 0, TIFF_SETGET_C16_FLOAT, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 0, 1, "BlackLevelDeltaV", NULL },
 	{ TIFFTAG_WHITELEVEL, -1, -1, TIFF_LONG, 0, TIFF_SETGET_C16_UINT32, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 0, 1, "WhiteLevel", NULL },
 	{ TIFFTAG_DEFAULTSCALE, 2, 2, TIFF_RATIONAL, 0, TIFF_SETGET_C0_FLOAT, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 0, 0, "DefaultScale", NULL },
-	{ TIFFTAG_BESTQUALITYSCALE, 1, 1, TIFF_RATIONAL, 0, TIFF_SETGET_FLOAT, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 0, 0, "BestQualityScale", NULL },
+	{ TIFFTAG_BESTQUALITYSCALE, 1, 1, TIFF_RATIONAL, 0, TIFF_SETGET_DOUBLE, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 0, 0, "BestQualityScale", NULL },
 	{ TIFFTAG_DEFAULTCROPORIGIN, 2, 2, TIFF_RATIONAL, 0, TIFF_SETGET_C0_FLOAT, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 0, 0, "DefaultCropOrigin", NULL },
 	{ TIFFTAG_DEFAULTCROPSIZE, 2, 2, TIFF_RATIONAL, 0, TIFF_SETGET_C0_FLOAT, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 0, 0, "DefaultCropSize", NULL },
 	{ TIFFTAG_COLORMATRIX1, -1, -1, TIFF_SRATIONAL, 0, TIFF_SETGET_C16_FLOAT, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 0, 1, "ColorMatrix1", NULL },
@@ -189,16 +175,16 @@ tiffFields[] = {
 	{ TIFFTAG_ANALOGBALANCE, -1, -1, TIFF_RATIONAL, 0, TIFF_SETGET_C16_FLOAT, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 0, 1, "AnalogBalance", NULL },
 	{ TIFFTAG_ASSHOTNEUTRAL, -1, -1, TIFF_RATIONAL, 0, TIFF_SETGET_C16_FLOAT, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 0, 1, "AsShotNeutral", NULL },
 	{ TIFFTAG_ASSHOTWHITEXY, 2, 2, TIFF_RATIONAL, 0, TIFF_SETGET_C0_FLOAT, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 0, 0, "AsShotWhiteXY", NULL },
-	{ TIFFTAG_BASELINEEXPOSURE, 1, 1, TIFF_SRATIONAL, 0, TIFF_SETGET_FLOAT, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 0, 0, "BaselineExposure", NULL },
-	{ TIFFTAG_BASELINENOISE, 1, 1, TIFF_RATIONAL, 0, TIFF_SETGET_FLOAT, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 0, 0, "BaselineNoise", NULL },
-	{ TIFFTAG_BASELINESHARPNESS, 1, 1, TIFF_RATIONAL, 0, TIFF_SETGET_FLOAT, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 0, 0, "BaselineSharpness", NULL },
+	{ TIFFTAG_BASELINEEXPOSURE, 1, 1, TIFF_SRATIONAL, 0, TIFF_SETGET_DOUBLE, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 0, 0, "BaselineExposure", NULL },
+	{ TIFFTAG_BASELINENOISE, 1, 1, TIFF_RATIONAL, 0, TIFF_SETGET_DOUBLE, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 0, 0, "BaselineNoise", NULL },
+	{ TIFFTAG_BASELINESHARPNESS, 1, 1, TIFF_RATIONAL, 0, TIFF_SETGET_DOUBLE, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 0, 0, "BaselineSharpness", NULL },
 	{ TIFFTAG_BAYERGREENSPLIT, 1, 1, TIFF_LONG, 0, TIFF_SETGET_UINT32, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 0, 0, "BayerGreenSplit", NULL },
-	{ TIFFTAG_LINEARRESPONSELIMIT, 1, 1, TIFF_RATIONAL, 0, TIFF_SETGET_FLOAT, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 0, 0, "LinearResponseLimit", NULL },
+	{ TIFFTAG_LINEARRESPONSELIMIT, 1, 1, TIFF_RATIONAL, 0, TIFF_SETGET_DOUBLE, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 0, 0, "LinearResponseLimit", NULL },
 	{ TIFFTAG_CAMERASERIALNUMBER, -1, -1, TIFF_ASCII, 0, TIFF_SETGET_ASCII, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "CameraSerialNumber", NULL },
 	{ TIFFTAG_LENSINFO, 4, 4, TIFF_RATIONAL, 0, TIFF_SETGET_C0_FLOAT, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 0, 0, "LensInfo", NULL },
-	{ TIFFTAG_CHROMABLURRADIUS, 1, 1, TIFF_RATIONAL, 0, TIFF_SETGET_FLOAT, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 0, 0, "ChromaBlurRadius", NULL },
-	{ TIFFTAG_ANTIALIASSTRENGTH, 1, 1, TIFF_RATIONAL, 0, TIFF_SETGET_FLOAT, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 0, 0, "AntiAliasStrength", NULL },
-	{ TIFFTAG_SHADOWSCALE, 1, 1, TIFF_RATIONAL, 0, TIFF_SETGET_FLOAT, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 0, 0, "ShadowScale", NULL },
+	{ TIFFTAG_CHROMABLURRADIUS, 1, 1, TIFF_RATIONAL, 0, TIFF_SETGET_DOUBLE, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 0, 0, "ChromaBlurRadius", NULL },
+	{ TIFFTAG_ANTIALIASSTRENGTH, 1, 1, TIFF_RATIONAL, 0, TIFF_SETGET_DOUBLE, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 0, 0, "AntiAliasStrength", NULL },
+	{ TIFFTAG_SHADOWSCALE, 1, 1, TIFF_RATIONAL, 0, TIFF_SETGET_DOUBLE, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 0, 0, "ShadowScale", NULL },
 	{ TIFFTAG_DNGPRIVATEDATA, -1, -1, TIFF_BYTE, 0, TIFF_SETGET_C16_UINT8, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 0, 1, "DNGPrivateData", NULL },
 	{ TIFFTAG_MAKERNOTESAFETY, 1, 1, TIFF_SHORT, 0, TIFF_SETGET_UINT16, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 0, 0, "MakerNoteSafety", NULL },
 	{ TIFFTAG_CALIBRATIONILLUMINANT1, 1, 1, TIFF_SHORT, 0, TIFF_SETGET_UINT16, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 0, 0, "CalibrationIlluminant1", NULL },
@@ -231,68 +217,47 @@ tiffFields[] = {
 	/* begin pseudo tags */
 };

-/*
- * EXIF tags  (Version 2.31, July 2016 plus version 2.32 May 2019)
- */
 static const TIFFField
 exifFields[] = {
-	{ EXIFTAG_EXPOSURETIME, 1, 1, TIFF_RATIONAL, 0, TIFF_SETGET_FLOAT, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "ExposureTime", NULL },
-	{ EXIFTAG_FNUMBER, 1, 1, TIFF_RATIONAL, 0, TIFF_SETGET_FLOAT, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "FNumber", NULL },
+	{ EXIFTAG_EXPOSURETIME, 1, 1, TIFF_RATIONAL, 0, TIFF_SETGET_DOUBLE, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "ExposureTime", NULL },
+	{ EXIFTAG_FNUMBER, 1, 1, TIFF_RATIONAL, 0, TIFF_SETGET_DOUBLE, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "FNumber", NULL },
 	{ EXIFTAG_EXPOSUREPROGRAM, 1, 1, TIFF_SHORT, 0, TIFF_SETGET_UINT16, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "ExposureProgram", NULL },
 	{ EXIFTAG_SPECTRALSENSITIVITY, -1, -1, TIFF_ASCII, 0, TIFF_SETGET_ASCII, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "SpectralSensitivity", NULL },
 	{ EXIFTAG_ISOSPEEDRATINGS, -1, -1, TIFF_SHORT, 0, TIFF_SETGET_C16_UINT16, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 1, "ISOSpeedRatings", NULL },
 	{ EXIFTAG_OECF, -1, -1, TIFF_UNDEFINED, 0, TIFF_SETGET_C16_UINT8, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 1, "OptoelectricConversionFactor", NULL },
-	{ EXIFTAG_SENSITIVITYTYPE, 1, 1, TIFF_SHORT, 0, TIFF_SETGET_UINT16, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "SensitivityType", NULL },
-	{ EXIFTAG_STANDARDOUTPUTSENSITIVITY, 1, 1, TIFF_LONG, 0, TIFF_SETGET_UINT32, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "StandardOutputSensitivity", NULL },
-	{ EXIFTAG_RECOMMENDEDEXPOSUREINDEX, 1, 1, TIFF_LONG, 0, TIFF_SETGET_UINT32, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "RecommendedExposureIndex", NULL },
-	{ EXIFTAG_ISOSPEED, 1, 1, TIFF_LONG, 0, TIFF_SETGET_UINT32, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "ISOSpeed", NULL },
-	{ EXIFTAG_ISOSPEEDLATITUDEYYY, 1, 1, TIFF_LONG, 0, TIFF_SETGET_UINT32, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "ISOSpeedLatitudeyyy", NULL },
-	{ EXIFTAG_ISOSPEEDLATITUDEZZZ, 1, 1, TIFF_LONG, 0, TIFF_SETGET_UINT32, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "ISOSpeedLatitudezzz", NULL },
 	{ EXIFTAG_EXIFVERSION, 4, 4, TIFF_UNDEFINED, 0, TIFF_SETGET_C0_UINT8, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "ExifVersion", NULL },
 	{ EXIFTAG_DATETIMEORIGINAL, 20, 20, TIFF_ASCII, 0, TIFF_SETGET_ASCII, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "DateTimeOriginal", NULL },
 	{ EXIFTAG_DATETIMEDIGITIZED, 20, 20, TIFF_ASCII, 0, TIFF_SETGET_ASCII, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "DateTimeDigitized", NULL },
-	{ EXIFTAG_OFFSETTIME, 7, 7, TIFF_ASCII, 0, TIFF_SETGET_ASCII, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "OffsetTime", NULL },
-	{ EXIFTAG_OFFSETTIMEORIGINAL, 7, 7, TIFF_ASCII, 0, TIFF_SETGET_ASCII, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "OffsetTimeOriginal", NULL },
-	{ EXIFTAG_OFFSETTIMEDIGITIZED, 7, 7, TIFF_ASCII, 0, TIFF_SETGET_ASCII, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "OffsetTimeDigitized", NULL },
 	{ EXIFTAG_COMPONENTSCONFIGURATION, 4, 4, TIFF_UNDEFINED, 0, TIFF_SETGET_C0_UINT8, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "ComponentsConfiguration", NULL },
-	{ EXIFTAG_COMPRESSEDBITSPERPIXEL, 1, 1, TIFF_RATIONAL, 0, TIFF_SETGET_FLOAT, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "CompressedBitsPerPixel", NULL },
-	{ EXIFTAG_SHUTTERSPEEDVALUE, 1, 1, TIFF_SRATIONAL, 0, TIFF_SETGET_FLOAT, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "ShutterSpeedValue", NULL },
-	{ EXIFTAG_APERTUREVALUE, 1, 1, TIFF_RATIONAL, 0, TIFF_SETGET_FLOAT, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "ApertureValue", NULL },
-	{ EXIFTAG_BRIGHTNESSVALUE, 1, 1, TIFF_SRATIONAL, 0, TIFF_SETGET_FLOAT, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "BrightnessValue", NULL },
-	{ EXIFTAG_EXPOSUREBIASVALUE, 1, 1, TIFF_SRATIONAL, 0, TIFF_SETGET_FLOAT, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "ExposureBiasValue", NULL },
-	{ EXIFTAG_MAXAPERTUREVALUE, 1, 1, TIFF_RATIONAL, 0, TIFF_SETGET_FLOAT, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "MaxApertureValue", NULL },
-	/*--: EXIFTAG_SUBJECTDISTANCE: LibTiff returns value of "-1" if numerator equals 4294967295 (0xFFFFFFFF) to indicate infinite distance!
-	 * However, there are two other EXIF tags where numerator indicates a special value and six other cases where the denominator indicates special values,
-	 * which are not treated within LibTiff!! */
-	{ EXIFTAG_SUBJECTDISTANCE, 1, 1, TIFF_RATIONAL, 0, TIFF_SETGET_FLOAT, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "SubjectDistance", NULL },
+	{ EXIFTAG_COMPRESSEDBITSPERPIXEL, 1, 1, TIFF_RATIONAL, 0, TIFF_SETGET_DOUBLE, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "CompressedBitsPerPixel", NULL },
+	{ EXIFTAG_SHUTTERSPEEDVALUE, 1, 1, TIFF_SRATIONAL, 0, TIFF_SETGET_DOUBLE, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "ShutterSpeedValue", NULL },
+	{ EXIFTAG_APERTUREVALUE, 1, 1, TIFF_RATIONAL, 0, TIFF_SETGET_DOUBLE, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "ApertureValue", NULL },
+	{ EXIFTAG_BRIGHTNESSVALUE, 1, 1, TIFF_SRATIONAL, 0, TIFF_SETGET_DOUBLE, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "BrightnessValue", NULL },
+	{ EXIFTAG_EXPOSUREBIASVALUE, 1, 1, TIFF_SRATIONAL, 0, TIFF_SETGET_DOUBLE, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "ExposureBiasValue", NULL },
+	{ EXIFTAG_MAXAPERTUREVALUE, 1, 1, TIFF_RATIONAL, 0, TIFF_SETGET_DOUBLE, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "MaxApertureValue", NULL },
+	{ EXIFTAG_SUBJECTDISTANCE, 1, 1, TIFF_RATIONAL, 0, TIFF_SETGET_DOUBLE, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "SubjectDistance", NULL },
 	{ EXIFTAG_METERINGMODE, 1, 1, TIFF_SHORT, 0, TIFF_SETGET_UINT16, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "MeteringMode", NULL },
 	{ EXIFTAG_LIGHTSOURCE, 1, 1, TIFF_SHORT, 0, TIFF_SETGET_UINT16, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "LightSource", NULL },
 	{ EXIFTAG_FLASH, 1, 1, TIFF_SHORT, 0, TIFF_SETGET_UINT16, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "Flash", NULL },
-	{ EXIFTAG_FOCALLENGTH, 1, 1, TIFF_RATIONAL, 0, TIFF_SETGET_FLOAT, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "FocalLength", NULL },
+	{ EXIFTAG_FOCALLENGTH, 1, 1, TIFF_RATIONAL, 0, TIFF_SETGET_DOUBLE, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "FocalLength", NULL },
 	{ EXIFTAG_SUBJECTAREA, -1, -1, TIFF_SHORT, 0, TIFF_SETGET_C16_UINT16, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 1, "SubjectArea", NULL },
 	{ EXIFTAG_MAKERNOTE, -1, -1, TIFF_UNDEFINED, 0, TIFF_SETGET_C16_UINT8, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 1, "MakerNote", NULL },
 	{ EXIFTAG_USERCOMMENT, -1, -1, TIFF_UNDEFINED, 0, TIFF_SETGET_C16_UINT8, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 1, "UserComment", NULL },
 	{ EXIFTAG_SUBSECTIME, -1, -1, TIFF_ASCII, 0, TIFF_SETGET_ASCII, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "SubSecTime", NULL },
 	{ EXIFTAG_SUBSECTIMEORIGINAL, -1, -1, TIFF_ASCII, 0, TIFF_SETGET_ASCII, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "SubSecTimeOriginal", NULL },
 	{ EXIFTAG_SUBSECTIMEDIGITIZED, -1, -1, TIFF_ASCII, 0, TIFF_SETGET_ASCII, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "SubSecTimeDigitized", NULL },
-	{ EXIFTAG_TEMPERATURE, 1, 1, TIFF_SRATIONAL, 0, TIFF_SETGET_FLOAT, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "Temperature", NULL },
-	{ EXIFTAG_HUMIDITY, 1, 1, TIFF_RATIONAL, 0, TIFF_SETGET_FLOAT, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "Humidity", NULL },
-	{ EXIFTAG_PRESSURE, 1, 1, TIFF_RATIONAL, 0, TIFF_SETGET_FLOAT, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "Pressure", NULL },
-	{ EXIFTAG_WATERDEPTH, 1, 1, TIFF_SRATIONAL, 0, TIFF_SETGET_FLOAT, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "WaterDepth", NULL },
-	{ EXIFTAG_ACCELERATION, 1, 1, TIFF_RATIONAL, 0, TIFF_SETGET_FLOAT, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "Acceleration", NULL },
-	{ EXIFTAG_CAMERAELEVATIONANGLE, 1, 1, TIFF_SRATIONAL, 0, TIFF_SETGET_FLOAT, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "CameraElevationAngle", NULL },
 	{ EXIFTAG_FLASHPIXVERSION, 4, 4, TIFF_UNDEFINED, 0, TIFF_SETGET_C0_UINT8, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "FlashpixVersion", NULL },
 	{ EXIFTAG_COLORSPACE, 1, 1, TIFF_SHORT, 0, TIFF_SETGET_UINT16, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "ColorSpace", NULL },
 	{ EXIFTAG_PIXELXDIMENSION, 1, 1, TIFF_LONG, 0, TIFF_SETGET_UINT32, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "PixelXDimension", NULL },
 	{ EXIFTAG_PIXELYDIMENSION, 1, 1, TIFF_LONG, 0, TIFF_SETGET_UINT32, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "PixelYDimension", NULL },
 	{ EXIFTAG_RELATEDSOUNDFILE, 13, 13, TIFF_ASCII, 0, TIFF_SETGET_ASCII, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "RelatedSoundFile", NULL },
-	{ EXIFTAG_FLASHENERGY, 1, 1, TIFF_RATIONAL, 0, TIFF_SETGET_FLOAT, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "FlashEnergy", NULL },
+	{ EXIFTAG_FLASHENERGY, 1, 1, TIFF_RATIONAL, 0, TIFF_SETGET_DOUBLE, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "FlashEnergy", NULL },
 	{ EXIFTAG_SPATIALFREQUENCYRESPONSE, -1, -1, TIFF_UNDEFINED, 0, TIFF_SETGET_C16_UINT8, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 1, "SpatialFrequencyResponse", NULL },
-	{ EXIFTAG_FOCALPLANEXRESOLUTION, 1, 1, TIFF_RATIONAL, 0, TIFF_SETGET_FLOAT, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "FocalPlaneXResolution", NULL },
-	{ EXIFTAG_FOCALPLANEYRESOLUTION, 1, 1, TIFF_RATIONAL, 0, TIFF_SETGET_FLOAT, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "FocalPlaneYResolution", NULL },
+	{ EXIFTAG_FOCALPLANEXRESOLUTION, 1, 1, TIFF_RATIONAL, 0, TIFF_SETGET_DOUBLE, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "FocalPlaneXResolution", NULL },
+	{ EXIFTAG_FOCALPLANEYRESOLUTION, 1, 1, TIFF_RATIONAL, 0, TIFF_SETGET_DOUBLE, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "FocalPlaneYResolution", NULL },
 	{ EXIFTAG_FOCALPLANERESOLUTIONUNIT, 1, 1, TIFF_SHORT, 0, TIFF_SETGET_UINT16, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "FocalPlaneResolutionUnit", NULL },
 	{ EXIFTAG_SUBJECTLOCATION, 2, 2, TIFF_SHORT, 0, TIFF_SETGET_C0_UINT16, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "SubjectLocation", NULL },
-	{ EXIFTAG_EXPOSUREINDEX, 1, 1, TIFF_RATIONAL, 0, TIFF_SETGET_FLOAT, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "ExposureIndex", NULL },
+	{ EXIFTAG_EXPOSUREINDEX, 1, 1, TIFF_RATIONAL, 0, TIFF_SETGET_DOUBLE, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "ExposureIndex", NULL },
 	{ EXIFTAG_SENSINGMETHOD, 1, 1, TIFF_SHORT, 0, TIFF_SETGET_UINT16, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "SensingMethod", NULL },
 	{ EXIFTAG_FILESOURCE, 1, 1, TIFF_UNDEFINED, 0, TIFF_SETGET_UINT8, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "FileSource", NULL },
 	{ EXIFTAG_SCENETYPE, 1, 1, TIFF_UNDEFINED, 0, TIFF_SETGET_UINT8, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "SceneType", NULL },
@@ -300,79 +265,22 @@ exifFields[] = {
 	{ EXIFTAG_CUSTOMRENDERED, 1, 1, TIFF_SHORT, 0, TIFF_SETGET_UINT16, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "CustomRendered", NULL },
 	{ EXIFTAG_EXPOSUREMODE, 1, 1, TIFF_SHORT, 0, TIFF_SETGET_UINT16, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "ExposureMode", NULL },
 	{ EXIFTAG_WHITEBALANCE, 1, 1, TIFF_SHORT, 0, TIFF_SETGET_UINT16, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "WhiteBalance", NULL },
-	{ EXIFTAG_DIGITALZOOMRATIO, 1, 1, TIFF_RATIONAL, 0, TIFF_SETGET_FLOAT, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "DigitalZoomRatio", NULL },
+	{ EXIFTAG_DIGITALZOOMRATIO, 1, 1, TIFF_RATIONAL, 0, TIFF_SETGET_DOUBLE, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "DigitalZoomRatio", NULL },
 	{ EXIFTAG_FOCALLENGTHIN35MMFILM, 1, 1, TIFF_SHORT, 0, TIFF_SETGET_UINT16, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "FocalLengthIn35mmFilm", NULL },
 	{ EXIFTAG_SCENECAPTURETYPE, 1, 1, TIFF_SHORT, 0, TIFF_SETGET_UINT16, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "SceneCaptureType", NULL },
-	{ EXIFTAG_GAINCONTROL, 1, 1, TIFF_RATIONAL, 0, TIFF_SETGET_FLOAT, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "GainControl", NULL },
+	{ EXIFTAG_GAINCONTROL, 1, 1, TIFF_RATIONAL, 0, TIFF_SETGET_DOUBLE, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "GainControl", NULL },
 	{ EXIFTAG_CONTRAST, 1, 1, TIFF_SHORT, 0, TIFF_SETGET_UINT16, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "Contrast", NULL },
 	{ EXIFTAG_SATURATION, 1, 1, TIFF_SHORT, 0, TIFF_SETGET_UINT16, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "Saturation", NULL },
 	{ EXIFTAG_SHARPNESS, 1, 1, TIFF_SHORT, 0, TIFF_SETGET_UINT16, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "Sharpness", NULL },
 	{ EXIFTAG_DEVICESETTINGDESCRIPTION, -1, -1, TIFF_UNDEFINED, 0, TIFF_SETGET_C16_UINT8, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 1, "DeviceSettingDescription", NULL },
 	{ EXIFTAG_SUBJECTDISTANCERANGE, 1, 1, TIFF_SHORT, 0, TIFF_SETGET_UINT16, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "SubjectDistanceRange", NULL },
-	{ EXIFTAG_IMAGEUNIQUEID, 33, 33, TIFF_ASCII, 0, TIFF_SETGET_ASCII, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "ImageUniqueID", NULL },
-	{ EXIFTAG_CAMERAOWNERNAME, -1, -1, TIFF_ASCII, 0, TIFF_SETGET_ASCII, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "CameraOwnerName", NULL },
-	{ EXIFTAG_BODYSERIALNUMBER, -1, -1, TIFF_ASCII, 0, TIFF_SETGET_ASCII, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "BodySerialNumber", NULL },
-	{ EXIFTAG_LENSSPECIFICATION, 4, 4, TIFF_RATIONAL, 0, TIFF_SETGET_C0_FLOAT, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "LensSpecification", NULL },
-	{ EXIFTAG_LENSMAKE, -1, -1, TIFF_ASCII, 0, TIFF_SETGET_ASCII, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "LensMake", NULL },
-	{ EXIFTAG_LENSMODEL, -1, -1, TIFF_ASCII, 0, TIFF_SETGET_ASCII, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "LensModel", NULL },
-	{ EXIFTAG_LENSSERIALNUMBER, -1, -1, TIFF_ASCII, 0, TIFF_SETGET_ASCII, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "LensSerialNumber", NULL },
-	{ EXIFTAG_GAMMA, 1, 1, TIFF_RATIONAL, 0, TIFF_SETGET_FLOAT, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "Gamma", NULL },
-	{ EXIFTAG_COMPOSITEIMAGE, 1, 1, TIFF_SHORT, 0, TIFF_SETGET_UINT16, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "CompositeImage", NULL },
-	{ EXIFTAG_SOURCEIMAGENUMBEROFCOMPOSITEIMAGE, 2, 2, TIFF_SHORT, 0, TIFF_SETGET_C0_UINT16, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "SourceImageNumberOfCompositeImage", NULL },
-	{ EXIFTAG_SOURCEEXPOSURETIMESOFCOMPOSITEIMAGE, -1, -1, TIFF_UNDEFINED, 0, TIFF_SETGET_C16_UINT8, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 1, "SourceExposureTimesOfCompositeImage", NULL }
-};
-/*
- * EXIF-GPS tags  (Version 2.31, July 2016; nothing changed for version 2.32 May 2019)
- */
-
-static TIFFField
-gpsFields[] = {
-	/*  For the GPS tag definitions in gpsFields[] the standard definition for Rationals is TIFF_SETGET_DOUBLE and TIFF_SETGET_C0_FLOAT.
-	 *-- ATTENTION: After the upgrade with Rational2Double, the GPSTAG values can now be written and also read in double precision!
-	 *              In order to achieve double precision for GPS tags:
-	 *              Standard definitions for GPSTAG is kept to TIFF_SETGET_DOUBLE 
-	 *              and TIFF_SETGET_C0_FLOAT is changed to TIFF_SETGET_C0_DOUBLE.
-	 */
-	{		GPSTAG_VERSIONID	, 4, 4, 	TIFF_BYTE	, 0, 	TIFF_SETGET_C0_UINT8	, TIFF_SETGET_UINT8	, FIELD_CUSTOM	, 1, 0, 	"VersionID", NULL },
-	{		GPSTAG_LATITUDEREF	, 2, 2,	TIFF_ASCII	, 0, 	TIFF_SETGET_ASCII	, TIFF_SETGET_UNDEFINED	, FIELD_CUSTOM	, 1, 0, 	"LatitudeRef", NULL },
-	{		GPSTAG_LATITUDE	, 3, 3,	TIFF_RATIONAL	, 0, 	TIFF_SETGET_C0_DOUBLE	, TIFF_SETGET_UNDEFINED	, FIELD_CUSTOM	, 1, 0, 	"Latitude", NULL },
-	{		GPSTAG_LONGITUDEREF	, 2, 2,	TIFF_ASCII	, 0, 	TIFF_SETGET_ASCII	, TIFF_SETGET_UNDEFINED	, FIELD_CUSTOM	, 1, 0, 	"LongitudeRef", NULL },
-	{		GPSTAG_LONGITUDE	, 3, 3,	TIFF_RATIONAL	, 0, 	TIFF_SETGET_C0_DOUBLE	, TIFF_SETGET_UNDEFINED	, FIELD_CUSTOM	, 1, 0, 	"Longitude", NULL },
-	{		GPSTAG_ALTITUDEREF	, 1, 1,	TIFF_BYTE	, 0, 	TIFF_SETGET_UINT8	, TIFF_SETGET_UNDEFINED	, FIELD_CUSTOM	, 1, 0, 	"AltitudeRef", NULL },
-	{		GPSTAG_ALTITUDE	, 1, 1,	TIFF_RATIONAL	, 0, 	TIFF_SETGET_DOUBLE	, TIFF_SETGET_UNDEFINED	, FIELD_CUSTOM	, 1, 0, 	"Altitude", NULL },
-	{		GPSTAG_TIMESTAMP	, 3, 3,	TIFF_RATIONAL	, 0, 	TIFF_SETGET_C0_DOUBLE	, TIFF_SETGET_UNDEFINED	, FIELD_CUSTOM	, 1, 0, 	"TimeStamp", NULL },
-	{		GPSTAG_SATELLITES	, -1, -1,	TIFF_ASCII	, 0, 	TIFF_SETGET_ASCII	, TIFF_SETGET_UNDEFINED	, FIELD_CUSTOM	, 1, 0, 	"Satellites", NULL },
-	{		GPSTAG_STATUS	, 2, 2,	TIFF_ASCII	, 0, 	TIFF_SETGET_ASCII	, TIFF_SETGET_UNDEFINED	, FIELD_CUSTOM	, 1, 0, 	"Status", NULL },
-	{		GPSTAG_MEASUREMODE	, 2, 2,	TIFF_ASCII	, 0, 	TIFF_SETGET_ASCII	, TIFF_SETGET_UNDEFINED	, FIELD_CUSTOM	, 1, 0, 	"MeasureMode", NULL },
-	{		GPSTAG_DOP	, 1, 1,	TIFF_RATIONAL	, 0, 	TIFF_SETGET_DOUBLE	, TIFF_SETGET_UNDEFINED	, FIELD_CUSTOM	, 1, 0, 	"DOP", NULL },
-	{		GPSTAG_SPEEDREF	, 2, 2,	TIFF_ASCII	, 0, 	TIFF_SETGET_ASCII	, TIFF_SETGET_UNDEFINED	, FIELD_CUSTOM	, 1, 0, 	"SpeedRef", NULL },
-	{		GPSTAG_SPEED	, 1, 1,	TIFF_RATIONAL	, 0, 	TIFF_SETGET_DOUBLE	, TIFF_SETGET_UNDEFINED	, FIELD_CUSTOM	, 1, 0, 	"Speed", NULL },
-	{		GPSTAG_TRACKREF	, 2, 2,	TIFF_ASCII	, 0, 	TIFF_SETGET_ASCII	, TIFF_SETGET_UNDEFINED	, FIELD_CUSTOM	, 1, 0, 	"TrackRef", NULL },
-	{		GPSTAG_TRACK	, 1, 1,	TIFF_RATIONAL	, 0, 	TIFF_SETGET_DOUBLE	, TIFF_SETGET_UNDEFINED	, FIELD_CUSTOM	, 1, 0, 	"Track", NULL },
-	{		GPSTAG_IMGDIRECTIONREF	, 2, 2,	TIFF_ASCII	, 0, 	TIFF_SETGET_ASCII	, TIFF_SETGET_UNDEFINED	, FIELD_CUSTOM	, 1, 0, 	"ImgDirectionRef", NULL },
-	{		GPSTAG_IMGDIRECTION	, 1, 1,	TIFF_RATIONAL	, 0, 	TIFF_SETGET_DOUBLE	, TIFF_SETGET_UNDEFINED	, FIELD_CUSTOM	, 1, 0, 	"ImgDirection", NULL },
-	{		GPSTAG_MAPDATUM	, -1, -1,	TIFF_ASCII	, 0, 	TIFF_SETGET_ASCII	, TIFF_SETGET_UNDEFINED	, FIELD_CUSTOM	, 1, 0, 	"MapDatum", NULL },
-	{		GPSTAG_DESTLATITUDEREF	, 2, 2,	TIFF_ASCII	, 0, 	TIFF_SETGET_ASCII	, TIFF_SETGET_UNDEFINED	, FIELD_CUSTOM	, 1, 0, 	"DestLatitudeRef", NULL },
-	{		GPSTAG_DESTLATITUDE	, 3, 3,	TIFF_RATIONAL	, 0, 	TIFF_SETGET_C0_DOUBLE	, TIFF_SETGET_UNDEFINED	, FIELD_CUSTOM	, 1, 0, 	"DestLatitude", NULL },
-	{		GPSTAG_DESTLONGITUDEREF	, 2, 2,	TIFF_ASCII	, 0, 	TIFF_SETGET_ASCII	, TIFF_SETGET_UNDEFINED	, FIELD_CUSTOM	, 1, 0, 	"DestLongitudeRef", NULL },
-	{		GPSTAG_DESTLONGITUDE	, 3, 3,	TIFF_RATIONAL	, 0, 	TIFF_SETGET_C0_DOUBLE	, TIFF_SETGET_UNDEFINED	, FIELD_CUSTOM	, 1, 0, 	"DestLongitude", NULL },
-	{		GPSTAG_DESTBEARINGREF	, 2, 2,	TIFF_ASCII	, 0, 	TIFF_SETGET_ASCII	, TIFF_SETGET_UNDEFINED	, FIELD_CUSTOM	, 1, 0, 	"DestBearingRef", NULL },
-	{		GPSTAG_DESTBEARING	, 1, 1,	TIFF_RATIONAL	, 0, 	TIFF_SETGET_DOUBLE	, TIFF_SETGET_UNDEFINED	, FIELD_CUSTOM	, 1, 0, 	"DestBearing", NULL },
-	{		GPSTAG_DESTDISTANCEREF	, 2, 2,	TIFF_ASCII	, 0, 	TIFF_SETGET_ASCII	, TIFF_SETGET_UNDEFINED	, FIELD_CUSTOM	, 1, 0, 	"DestDistanceRef", NULL },
-	{		GPSTAG_DESTDISTANCE	, 1, 1,	TIFF_RATIONAL	, 0, 	TIFF_SETGET_DOUBLE	, TIFF_SETGET_UNDEFINED	, FIELD_CUSTOM	, 1, 0, 	"DestDistance", NULL },
-	{		GPSTAG_PROCESSINGMETHOD	, -1, -1,	TIFF_UNDEFINED	, 0, 	TIFF_SETGET_C16_UINT8	, TIFF_SETGET_UNDEFINED	, FIELD_CUSTOM	, 1, 1, 	"ProcessingMethod", NULL },
-	{		GPSTAG_AREAINFORMATION	, -1, -1,	TIFF_UNDEFINED	, 0, 	TIFF_SETGET_C16_UINT8	, TIFF_SETGET_UNDEFINED	, FIELD_CUSTOM	, 1, 1, 	"AreaInformation", NULL },
-	{		GPSTAG_DATESTAMP	, 11, 11,	TIFF_ASCII	, 0, 	TIFF_SETGET_ASCII	, TIFF_SETGET_UNDEFINED	, FIELD_CUSTOM	, 1, 0, 	"DateStamp", NULL },
-	{		GPSTAG_DIFFERENTIAL	, 1, 1,	TIFF_SHORT	, 0, 	TIFF_SETGET_UINT16	, TIFF_SETGET_UNDEFINED	, FIELD_CUSTOM	, 1, 0, 	"Differential", NULL },
-	{		GPSTAG_GPSHPOSITIONINGERROR	, 1, 1,	TIFF_RATIONAL	, 0, 	TIFF_SETGET_DOUBLE	, TIFF_SETGET_UNDEFINED	, FIELD_CUSTOM	, 1, 0, 	"HorizontalPositioningError", NULL }
+	{ EXIFTAG_IMAGEUNIQUEID, 33, 33, TIFF_ASCII, 0, TIFF_SETGET_ASCII, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "ImageUniqueID", NULL }
 };

 static const TIFFFieldArray
 tiffFieldArray = { tfiatImage, 0, TIFFArrayCount(tiffFields), (TIFFField*) tiffFields };
 static const TIFFFieldArray
 exifFieldArray = { tfiatExif, 0, TIFFArrayCount(exifFields), (TIFFField*) exifFields };
-static const TIFFFieldArray
-gpsFieldArray = { tfiatGps, 0, TIFFArrayCount(gpsFields), (TIFFField*) gpsFields };

 /*
 *  We have our own local lfind() equivalent to avoid subtle differences
@@ -405,12 +313,6 @@ _TIFFGetExifFields(void)
 	return(&exifFieldArray);
 }

-const TIFFFieldArray*
-_TIFFGetGpsFields(void)
-{
-	return(&gpsFieldArray);
-}
-
 void
 _TIFFSetupFields(TIFF* tif, const TIFFFieldArray* fieldarray)
 {
@@ -600,82 +502,6 @@ _TIFFDataSize(TIFFDataType type)
 	}
 }

-/*
- * Rational2Double: 
- * Return size of TIFFSetGetFieldType in bytes.
- *
- * XXX: TIFF_RATIONAL values for FIELD_CUSTOM are stored internally as 4-byte float.
- * However, some of them should be stored internally as 8-byte double. 
- * This is now managed by the SetGetField of the tag-definition!
- */
-int
-_TIFFSetGetFieldSize(TIFFSetGetFieldType setgettype)
-{
-	switch (setgettype)
-	{
-		case TIFF_SETGET_UNDEFINED:
-		case TIFF_SETGET_ASCII:
-		case TIFF_SETGET_C0_ASCII:
-		case TIFF_SETGET_C16_ASCII:
-		case TIFF_SETGET_C32_ASCII:
-		case TIFF_SETGET_OTHER:
-		    return 0;
-		case TIFF_SETGET_UINT8:
-		case TIFF_SETGET_SINT8:
-		case TIFF_SETGET_C0_UINT8:
-		case TIFF_SETGET_C0_SINT8:
-		case TIFF_SETGET_C16_UINT8:
-		case TIFF_SETGET_C16_SINT8:
-		case TIFF_SETGET_C32_UINT8:
-		case TIFF_SETGET_C32_SINT8:
-		    return 1;
-		case TIFF_SETGET_UINT16:
-		case TIFF_SETGET_SINT16:
-		case TIFF_SETGET_C0_UINT16:
-		case TIFF_SETGET_C0_SINT16:
-		case TIFF_SETGET_C16_UINT16:
-		case TIFF_SETGET_C16_SINT16:
-		case TIFF_SETGET_C32_UINT16:
-		case TIFF_SETGET_C32_SINT16:
-		    return 2;
-		case TIFF_SETGET_INT:
-		case TIFF_SETGET_UINT32:
-		case TIFF_SETGET_SINT32:
-		case TIFF_SETGET_FLOAT:
-		case TIFF_SETGET_UINT16_PAIR:
-		case TIFF_SETGET_C0_UINT32:
-		case TIFF_SETGET_C0_SINT32:
-		case TIFF_SETGET_C0_FLOAT:
-		case TIFF_SETGET_C16_UINT32:
-		case TIFF_SETGET_C16_SINT32:
-		case TIFF_SETGET_C16_FLOAT:
-		case TIFF_SETGET_C32_UINT32:
-		case TIFF_SETGET_C32_SINT32:
-		case TIFF_SETGET_C32_FLOAT:
-		    return 4;
-		case TIFF_SETGET_UINT64:
-		case TIFF_SETGET_SINT64:
-		case TIFF_SETGET_DOUBLE:
-		case TIFF_SETGET_IFD8:
-		case TIFF_SETGET_C0_UINT64:
-		case TIFF_SETGET_C0_SINT64:
-		case TIFF_SETGET_C0_DOUBLE:
-		case TIFF_SETGET_C0_IFD8:
-		case TIFF_SETGET_C16_UINT64:
-		case TIFF_SETGET_C16_SINT64:
-		case TIFF_SETGET_C16_DOUBLE:
-		case TIFF_SETGET_C16_IFD8:
-		case TIFF_SETGET_C32_UINT64:
-		case TIFF_SETGET_C32_SINT64:
-		case TIFF_SETGET_C32_DOUBLE:
-		case TIFF_SETGET_C32_IFD8:
-		    return 8;
-		default:
-		    return 0;
-	}
-} /*-- _TIFFSetGetFieldSize --- */
-
-
 const TIFFField*
 TIFFFindField(TIFF* tif, uint32 tag, TIFFDataType dt)
 {
@@ -1236,6 +1062,10 @@ _TIFFCheckFieldIsValidForCodec(TIFF *tif, ttag_t tag)
 		if (tag == TIFFTAG_LERC_PARAMETERS)
 		    return 1;
 		break;
+		  case COMPRESSION_WEBP:
+		if (tag == TIFFTAG_PREDICTOR)
+				return 1;
+		break;
 	}
 	return 0;
 }
@@ -73,7 +73,6 @@ typedef struct {
 	int	EOLcnt;			/* count of EOL codes recognized */
 	TIFFFaxFillFunc fill;		/* fill routine */
 	uint32*	runs;			/* b&w runs for current/previous row */
-	uint32	nruns;			/* size of the refruns / curruns arrays */
 	uint32*	refruns;		/* runs for reference line */
 	uint32*	curruns;		/* runs for current line */

@@ -161,9 +160,7 @@ Fax3PreDecode(TIFF* tif, uint16 s)
 	 */
 	sp->bitmap =
 	    TIFFGetBitRevTable(tif->tif_dir.td_fillorder != FILLORDER_LSB2MSB);
-	sp->curruns = sp->runs;
 	if (sp->refruns) {		/* init reference line to white */
-		sp->refruns = sp->runs + sp->nruns;
 		sp->refruns[0] = (uint32) sp->b.rowpixels;
 		sp->refruns[1] = 0;
 	}
@@ -221,12 +218,8 @@ Fax3PrematureEOF(const char* module, TIFF* tif, uint32 line, uint32 a0)

 #define	Nop

-/**
+/*
 * Decode the requested amount of G3 1D-encoded data.
- * @param buf destination buffer
- * @param occ available bytes in destination buffer
- * @param s number of planes (ignored)
- * @returns 1 for success, -1 in case of error
 */
 static int
 Fax3Decode1D(TIFF* tif, uint8* buf, tmsize_t occ, uint16 s)
@@ -307,9 +300,7 @@ Fax3Decode2D(TIFF* tif, uint8* buf, tmsize_t occ, uint16 s)
 		else
 			EXPAND2D(EOF2Da);
 		(*sp->fill)(buf, thisrun, pa, lastx);
-		if (pa < thisrun + sp->nruns) {
-			SETVALUE(0);	/* imaginary change for reference */
-		}
+		SETVALUE(0);		/* imaginary change for reference */
 		SWAP(uint32*, sp->curruns, sp->refruns);
 		buf += sp->b.rowbytes;
 		occ -= sp->b.rowbytes;
@@ -515,7 +506,7 @@ Fax3SetupState(TIFF* tif)
 	int needsRefLine;
 	Fax3CodecState* dsp = (Fax3CodecState*) Fax3State(tif);
 	tmsize_t rowbytes;
-	uint32 rowpixels;
+	uint32 rowpixels, nruns;

 	if (td->td_bitspersample != 1) {
 		TIFFErrorExt(tif->tif_clientdata, module,
@@ -532,13 +523,6 @@ Fax3SetupState(TIFF* tif)
 		rowbytes = TIFFScanlineSize(tif);
 		rowpixels = td->td_imagewidth;
 	}
-	if ((uint64)rowbytes < ((uint64)rowpixels + 7) / 8)
-	{
-		TIFFErrorExt(tif->tif_clientdata, module,
-			"Inconsistent number of bytes per row : rowbytes=%lu rowpixels=%lu",
-			(unsigned long)(rowbytes), (unsigned long)(rowpixels));
-		return (0);
-	}
 	sp->rowbytes = rowbytes;
 	sp->rowpixels = rowpixels;
 	/*
@@ -555,26 +539,26 @@ Fax3SetupState(TIFF* tif)
 	  TIFFroundup and TIFFSafeMultiply return zero on integer overflow
 	*/
 	dsp->runs=(uint32*) NULL;
-	dsp->nruns = TIFFroundup_32(rowpixels,32);
+	nruns = TIFFroundup_32(rowpixels,32);
 	if (needsRefLine) {
-		dsp->nruns = TIFFSafeMultiply(uint32,dsp->nruns,2);
+		nruns = TIFFSafeMultiply(uint32,nruns,2);
 	}
-	if ((dsp->nruns == 0) || (TIFFSafeMultiply(uint32,dsp->nruns,2) == 0)) {
+	if ((nruns == 0) || (TIFFSafeMultiply(uint32,nruns,2) == 0)) {
 		TIFFErrorExt(tif->tif_clientdata, tif->tif_name,
 			     "Row pixels integer overflow (rowpixels %u)",
 			     rowpixels);
 		return (0);
 	}
 	dsp->runs = (uint32*) _TIFFCheckMalloc(tif,
-					       TIFFSafeMultiply(uint32,dsp->nruns,2),
+					       TIFFSafeMultiply(uint32,nruns,2),
 					       sizeof (uint32),
 					       "for Group 3/4 run arrays");
 	if (dsp->runs == NULL)
 		return (0);
-	memset( dsp->runs, 0, TIFFSafeMultiply(uint32,dsp->nruns,2)*sizeof(uint32));
+	memset( dsp->runs, 0, TIFFSafeMultiply(uint32,nruns,2)*sizeof(uint32));
 	dsp->curruns = dsp->runs;
 	if (needsRefLine)
-		dsp->refruns = dsp->runs + dsp->nruns;
+		dsp->refruns = dsp->runs + nruns;
 	else
 		dsp->refruns = NULL;
 	if (td->td_compression == COMPRESSION_CCITTFAX3
@@ -610,19 +594,15 @@ Fax3SetupState(TIFF* tif)
 */

 #define	Fax3FlushBits(tif, sp) {				\
-	if ((tif)->tif_rawcc >= (tif)->tif_rawdatasize) {	\
-		if( !TIFFFlushData1(tif) )			\
-			return 0;				\
-        }							\
+	if ((tif)->tif_rawcc >= (tif)->tif_rawdatasize)		\
+		(void) TIFFFlushData1(tif);			\
 	*(tif)->tif_rawcp++ = (uint8) (sp)->data;		\
 	(tif)->tif_rawcc++;					\
 	(sp)->data = 0, (sp)->bit = 8;				\
 }
 #define	_FlushBits(tif) {					\
-	if ((tif)->tif_rawcc >= (tif)->tif_rawdatasize) {	\
-		if( !TIFFFlushData1(tif) )			\
-			return 0;				\
-        }							\
+	if ((tif)->tif_rawcc >= (tif)->tif_rawdatasize)		\
+		(void) TIFFFlushData1(tif);			\
 	*(tif)->tif_rawcp++ = (uint8) data;		\
 	(tif)->tif_rawcc++;					\
 	data = 0, bit = 8;					\
@@ -647,7 +627,7 @@ static const int _msbmask[9] =
 * the output stream.  Values are
 * assumed to be at most 16 bits.
 */
-static int
+static void
 Fax3PutBits(TIFF* tif, unsigned int bits, unsigned int length)
 {
 	Fax3CodecState* sp = EncoderState(tif);
@@ -658,7 +638,6 @@ Fax3PutBits(TIFF* tif, unsigned int bits, unsigned int length)

 	sp->data = data;
 	sp->bit = bit;
-        return 1;
 }

 /*
@@ -683,7 +662,7 @@ Fax3PutBits(TIFF* tif, unsigned int bits, unsigned int length)
 * appropriate table that holds the make-up and
 * terminating codes is supplied.
 */
-static int
+static void
 putspan(TIFF* tif, int32 span, const tableentry* tab)
 {
 	Fax3CodecState* sp = EncoderState(tif);
@@ -721,8 +700,6 @@ putspan(TIFF* tif, int32 span, const tableentry* tab)

 	sp->data = data;
 	sp->bit = bit;
-
-        return 1;
 }

 /*
@@ -731,7 +708,7 @@ putspan(TIFF* tif, int32 span, const tableentry* tab)
 * here.  We also handle writing the tag bit for the next
 * scanline when doing 2d encoding.
 */
-static int
+static void
 Fax3PutEOL(TIFF* tif)
 {
 	Fax3CodecState* sp = EncoderState(tif);
@@ -765,8 +742,6 @@ Fax3PutEOL(TIFF* tif)

 	sp->data = data;
 	sp->bit = bit;
-
-        return 1;
 }

 /*
@@ -1016,14 +991,12 @@ Fax3Encode1DRow(TIFF* tif, unsigned char* bp, uint32 bits)

 	for (;;) {
 		span = find0span(bp, bs, bits);		/* white span */
-		if( !putspan(tif, span, TIFFFaxWhiteCodes) )
-                    return 0;
+		putspan(tif, span, TIFFFaxWhiteCodes);
 		bs += span;
 		if (bs >= bits)
 			break;
 		span = find1span(bp, bs, bits);		/* black span */
-		if( !putspan(tif, span, TIFFFaxBlackCodes) )
-                    return 0;
+		putspan(tif, span, TIFFFaxBlackCodes);
 		bs += span;
 		if (bs >= bits)
 			break;
@@ -1075,28 +1048,21 @@ Fax3Encode2DRow(TIFF* tif, unsigned char* bp, unsigned char* rp, uint32 bits)
 			          (b1 < a1 && a1 - b1 <= 3U) ? -(int32)(a1 - b1) : 0x7FFFFFFF;
 			if (!(-3 <= d && d <= 3)) {	/* horizontal mode */
 				a2 = finddiff2(bp, a1, bits, PIXEL(bp,a1));
-				if( !putcode(tif, &horizcode) )
-                                    return 0;
+				putcode(tif, &horizcode);
 				if (a0+a1 == 0 || PIXEL(bp, a0) == 0) {
-					if( !putspan(tif, a1-a0, TIFFFaxWhiteCodes) )
-                                            return 0;
-					if( !putspan(tif, a2-a1, TIFFFaxBlackCodes) )
-                                            return 0;
+					putspan(tif, a1-a0, TIFFFaxWhiteCodes);
+					putspan(tif, a2-a1, TIFFFaxBlackCodes);
 				} else {
-					if( !putspan(tif, a1-a0, TIFFFaxBlackCodes) )
-                                            return 0;
-					if( !putspan(tif, a2-a1, TIFFFaxWhiteCodes) )
-                                            return 0;
+					putspan(tif, a1-a0, TIFFFaxBlackCodes);
+					putspan(tif, a2-a1, TIFFFaxWhiteCodes);
 				}
 				a0 = a2;
 			} else {			/* vertical mode */
-				if( !putcode(tif, &vcodes[d+3]) )
-                                    return 0;
+				putcode(tif, &vcodes[d+3]);
 				a0 = a1;
 			}
 		} else {				/* pass mode */
-			if( !putcode(tif, &passcode) )
-                            return 0;
+			putcode(tif, &passcode);
 			a0 = b2;
 		}
 		if (a0 >= bits)
@@ -1125,10 +1091,7 @@ Fax3Encode(TIFF* tif, uint8* bp, tmsize_t cc, uint16 s)
 	}
 	while (cc > 0) {
 		if ((sp->b.mode & FAXMODE_NOEOL) == 0)
-                {
-			if( !Fax3PutEOL(tif) )
-                            return 0;
-                }
+			Fax3PutEOL(tif);
 		if (is2DEncoding(sp)) {
 			if (sp->tag == G3_1D) {
 				if (!Fax3Encode1DRow(tif, bp, sp->b.rowpixels))
@@ -1165,8 +1128,8 @@ Fax3PostEncode(TIFF* tif)
 	return (1);
 }

-static int
-_Fax3Close(TIFF* tif)
+static void
+Fax3Close(TIFF* tif)
 {
 	if ((Fax3State(tif)->mode & FAXMODE_NORTC) == 0 && tif->tif_rawcp) {
 		Fax3CodecState* sp = EncoderState(tif);
@@ -1182,13 +1145,6 @@ _Fax3Close(TIFF* tif)
 			Fax3PutBits(tif, code, length);
 		Fax3FlushBits(tif, sp);
 	}
-	return 1;
-}
-
-static void
-Fax3Close(TIFF* tif)
-{
-    _Fax3Close(tif);
 }

 static void
@@ -1497,13 +1453,6 @@ Fax4Decode(TIFF* tif, uint8* buf, tmsize_t occ, uint16 s)
 		EXPAND2D(EOFG4);
                if (EOLcnt)
                    goto EOFG4;
-		if (((lastx + 7) >> 3) > (int)occ)	/* check for buffer overrun */
-		{
-			TIFFErrorExt(tif->tif_clientdata, module,
-			             "Buffer overrun detected : %d bytes available, %d bits needed",
-			             (int)occ, lastx);
-			return -1;
-		}
 		(*sp->fill)(buf, thisrun, pa, lastx);
 		SETVALUE(0);		/* imaginary change for reference */
 		SWAP(uint32*, sp->curruns, sp->refruns);
@@ -1519,13 +1468,6 @@ Fax4Decode(TIFF* tif, uint8* buf, tmsize_t occ, uint16 s)
                    fputs( "Bad EOFB\n", stderr );
 #endif                
                ClrBits( 13 );
-		if (((lastx + 7) >> 3) > (int)occ)	/* check for buffer overrun */
-		{
-			TIFFErrorExt(tif->tif_clientdata, module,
-			             "Buffer overrun detected : %d bytes available, %d bits needed",
-			             (int)occ, lastx);
-			return -1;
-		}
 		(*sp->fill)(buf, thisrun, pa, lastx);
 		UNCACHE_STATE(tif, sp);
 		return ( sp->line ? 1 : -1);	/* don't error on badly-terminated strips */
@@ -240,11 +240,6 @@ static const char* StateNames[] = {
 * current row and reset decoding state.
 */
 #define SETVALUE(x) do {							\
-    if (pa >= thisrun + sp->nruns) {					\
-        TIFFErrorExt(tif->tif_clientdata, module, "Buffer overflow at line %u of %s %u",	\
-                    sp->line, isTiled(tif) ? "tile" : "strip", isTiled(tif) ? tif->tif_curtile : tif->tif_curstrip);	\
-        return (-1);							\
-    }									\
    *pa++ = RunLength + (x);						\
    a0 += (x);								\
    RunLength = 0;							\
@@ -382,11 +377,6 @@ done1d:									\
 */
 #define CHECK_b1 do {							\
    if (pa != thisrun) while (b1 <= a0 && b1 < lastx) {			\
-	if( pb + 1 >= sp->refruns + sp->nruns) { 			\
-	    TIFFErrorExt(tif->tif_clientdata, module, "Buffer overflow at line %u of %s %u",	\
-	                sp->line, isTiled(tif) ? "tile" : "strip", isTiled(tif) ? tif->tif_curtile : tif->tif_curstrip);	\
-	    return (-1);						\
-	}								\
 	b1 += pb[0] + pb[1];						\
 	pb += 2;							\
    }									\
@@ -397,20 +387,10 @@ done1d:									\
 */
 #define EXPAND2D(eoflab) do {						\
    while (a0 < lastx) {						\
-	if (pa >= thisrun + sp->nruns) {				\
-		TIFFErrorExt(tif->tif_clientdata, module, "Buffer overflow at line %u of %s %u",	\
-		             sp->line, isTiled(tif) ? "tile" : "strip", isTiled(tif) ? tif->tif_curtile : tif->tif_curstrip);	\
-		return (-1);						\
-	}								\
 	LOOKUP8(7, TIFFFaxMainTable, eof2d);				\
 	switch (TabEnt->State) {					\
 	case S_Pass:							\
 	    CHECK_b1;							\
-	    if( pb + 1 >= sp->refruns + sp->nruns) { 			\
-	        TIFFErrorExt(tif->tif_clientdata, module, "Buffer overflow at line %u of %s %u",	\
-	                sp->line, isTiled(tif) ? "tile" : "strip", isTiled(tif) ? tif->tif_curtile : tif->tif_curstrip);	\
-	        return (-1);						\
-	    }								\
 	    b1 += *pb++;						\
 	    RunLength += b1 - a0;					\
 	    a0 = b1;							\
@@ -489,28 +469,20 @@ done1d:									\
 	case S_V0:							\
 	    CHECK_b1;							\
 	    SETVALUE(b1 - a0);						\
-	    if( pb >= sp->refruns + sp->nruns) { 			\
-	        TIFFErrorExt(tif->tif_clientdata, module, "Buffer overflow at line %u of %s %u",	\
-	                sp->line, isTiled(tif) ? "tile" : "strip", isTiled(tif) ? tif->tif_curtile : tif->tif_curstrip);	\
-	        return (-1);						\
-	    }								\
 	    b1 += *pb++;						\
 	    break;							\
 	case S_VR:							\
 	    CHECK_b1;							\
 	    SETVALUE(b1 - a0 + TabEnt->Param);				\
-	    if( pb >= sp->refruns + sp->nruns) { 			\
-	        TIFFErrorExt(tif->tif_clientdata, module, "Buffer overflow at line %u of %s %u",	\
-	                sp->line, isTiled(tif) ? "tile" : "strip", isTiled(tif) ? tif->tif_curtile : tif->tif_curstrip);	\
-	        return (-1);						\
-	    }								\
 	    b1 += *pb++;						\
 	    break;							\
 	case S_VL:							\
 	    CHECK_b1;							\
-	    if (b1 < (int) (a0 + TabEnt->Param)) {			\
-		unexpected("VL", a0);				\
-		goto eol2d;						\
+	    if (b1 <= (int) (a0 + TabEnt->Param)) {			\
+		if (b1 < (int) (a0 + TabEnt->Param) || pa != thisrun) {	\
+		    unexpected("VL", a0);				\
+		    goto eol2d;						\
+		}							\
 	    }								\
 	    SETVALUE(b1 - a0 - TabEnt->Param);				\
 	    b1 -= *--pb;						\
@@ -557,7 +529,6 @@ eol2d:									\
    CLEANUP_RUNS();							\
 } while (0)
 #endif /* _FAX3_ */
-/* vim: set ts=8 sts=4 sw=4 noet: */
 /*
 * Local Variables:
 * mode: c
@@ -1,6 +1,5 @@
 /* WARNING, this file was automatically generated by the
    mkg3states program */
-#include <stdint.h>
 #include "tiff.h"
 #include "tif_fax3.h"
 const TIFFFaxTabEnt TIFFFaxMainTable[128] = {
@@ -45,8 +45,36 @@ TIFFFlush(TIFF* tif)
        && !(tif->tif_flags & TIFF_DIRTYDIRECT) 
        && tif->tif_mode == O_RDWR )
    {
-        if( TIFFForceStrileArrayWriting(tif) )
-            return 1;
+        uint64  *offsets=NULL, *sizes=NULL;
+
+        if( TIFFIsTiled(tif) )
+        {
+            if( TIFFGetField( tif, TIFFTAG_TILEOFFSETS, &offsets ) 
+                && TIFFGetField( tif, TIFFTAG_TILEBYTECOUNTS, &sizes ) 
+                && _TIFFRewriteField( tif, TIFFTAG_TILEOFFSETS, TIFF_LONG8, 
+                                      tif->tif_dir.td_nstrips, offsets )
+                && _TIFFRewriteField( tif, TIFFTAG_TILEBYTECOUNTS, TIFF_LONG8, 
+                                      tif->tif_dir.td_nstrips, sizes ) )
+            {
+                tif->tif_flags &= ~TIFF_DIRTYSTRIP;
+                tif->tif_flags &= ~TIFF_BEENWRITING;
+                return 1;
+            }
+        }
+        else
+        {
+            if( TIFFGetField( tif, TIFFTAG_STRIPOFFSETS, &offsets ) 
+                && TIFFGetField( tif, TIFFTAG_STRIPBYTECOUNTS, &sizes ) 
+                && _TIFFRewriteField( tif, TIFFTAG_STRIPOFFSETS, TIFF_LONG8, 
+                                      tif->tif_dir.td_nstrips, offsets )
+                && _TIFFRewriteField( tif, TIFFTAG_STRIPBYTECOUNTS, TIFF_LONG8, 
+                                      tif->tif_dir.td_nstrips, sizes ) )
+            {
+                tif->tif_flags &= ~TIFF_DIRTYSTRIP;
+                tif->tif_flags &= ~TIFF_BEENWRITING;
+                return 1;
+            }
+        }
    }

    if ((tif->tif_flags & (TIFF_DIRTYDIRECT|TIFF_DIRTYSTRIP)) 
@@ -56,92 +84,6 @@ TIFFFlush(TIFF* tif)
    return (1);
 }

-/*
- * This is an advanced writing function that must be used in a particular
- * sequence, and together with TIFFDeferStrileArrayWriting(),
- * to make its intended effect. Its aim is to force the writing of
- * the [Strip/Tile][Offsets/ByteCounts] arrays at the end of the file, when
- * they have not yet been rewritten.
- *
- * The typical sequence of calls is:
- * TIFFOpen()
- * [ TIFFCreateDirectory(tif) ]
- * Set fields with calls to TIFFSetField(tif, ...)
- * TIFFDeferStrileArrayWriting(tif)
- * TIFFWriteCheck(tif, ...)
- * TIFFWriteDirectory(tif)
- * ... potentially create other directories and come back to the above directory
- * TIFFForceStrileArrayWriting(tif)
- *
- * Returns 1 in case of success, 0 otherwise.
- */
-int TIFFForceStrileArrayWriting(TIFF* tif)
-{
-    static const char module[] = "TIFFForceStrileArrayWriting";
-    const int isTiled = TIFFIsTiled(tif);
-
-    if (tif->tif_mode == O_RDONLY)
-    {
-        TIFFErrorExt(tif->tif_clientdata, tif->tif_name,
-                     "File opened in read-only mode");
-        return 0;
-    }
-    if( tif->tif_diroff == 0 )
-    {
-        TIFFErrorExt(tif->tif_clientdata, module,
-                     "Directory has not yet been written");
-        return 0;
-    }
-    if( (tif->tif_flags & TIFF_DIRTYDIRECT) != 0 )
-    {
-        TIFFErrorExt(tif->tif_clientdata, module,
-                     "Directory has changes other than the strile arrays. "
-                     "TIFFRewriteDirectory() should be called instead");
-        return 0;
-    }
-
-    if( !(tif->tif_flags & TIFF_DIRTYSTRIP) )
-    {
-        if( !(tif->tif_dir.td_stripoffset_entry.tdir_tag != 0 &&
-             tif->tif_dir.td_stripoffset_entry.tdir_count == 0 &&
-             tif->tif_dir.td_stripoffset_entry.tdir_type == 0 &&
-             tif->tif_dir.td_stripoffset_entry.tdir_offset.toff_long8 == 0 &&
-             tif->tif_dir.td_stripbytecount_entry.tdir_tag != 0 &&
-             tif->tif_dir.td_stripbytecount_entry.tdir_count == 0 &&
-             tif->tif_dir.td_stripbytecount_entry.tdir_type == 0 &&
-             tif->tif_dir.td_stripbytecount_entry.tdir_offset.toff_long8 == 0) )
-        {
-            TIFFErrorExt(tif->tif_clientdata, module,
-                        "Function not called together with "
-                        "TIFFDeferStrileArrayWriting()");
-            return 0;
-        }
-
-        if (tif->tif_dir.td_stripoffset_p == NULL && !TIFFSetupStrips(tif))
-            return 0;
-    }
-
-    if( _TIFFRewriteField( tif,
-                           isTiled ? TIFFTAG_TILEOFFSETS :
-                                     TIFFTAG_STRIPOFFSETS,
-                           TIFF_LONG8,
-                           tif->tif_dir.td_nstrips,
-                           tif->tif_dir.td_stripoffset_p )
-        && _TIFFRewriteField( tif,
-                              isTiled ? TIFFTAG_TILEBYTECOUNTS :
-                                        TIFFTAG_STRIPBYTECOUNTS,
-                              TIFF_LONG8,
-                              tif->tif_dir.td_nstrips,
-                              tif->tif_dir.td_stripbytecount_p ) )
-    {
-        tif->tif_flags &= ~TIFF_DIRTYSTRIP;
-        tif->tif_flags &= ~TIFF_BEENWRITING;
-        return 1;
-    }
-
-    return 0;
-}
-
 /*
 * Flush buffered data to the file.
 *
@@ -29,7 +29,6 @@
 */
 #include "tiffiop.h"
 #include <stdio.h>
-#include <limits.h>

 static int gtTileContig(TIFFRGBAImage*, uint32*, uint32, uint32);
 static int gtTileSeparate(TIFFRGBAImage*, uint32*, uint32, uint32);
@@ -646,20 +645,12 @@ gtTileContig(TIFFRGBAImage* img, uint32* raster, uint32 w, uint32 h)

    flip = setorientation(img);
    if (flip & FLIP_VERTICALLY) {
-        if ((tw + w) > INT_MAX) {
-            TIFFErrorExt(tif->tif_clientdata, TIFFFileName(tif), "%s", "unsupported tile size (too wide)");
-            return (0);
-        }
-        y = h - 1;
-        toskew = -(int32)(tw + w);
+	    y = h - 1;
+	    toskew = -(int32)(tw + w);
    }
    else {
-        if (tw > (INT_MAX + w)) {
-            TIFFErrorExt(tif->tif_clientdata, TIFFFileName(tif), "%s", "unsupported tile size (too wide)");
-            return (0);
-        }
-        y = 0;
-        toskew = -(int32)(tw - w);
+	    y = 0;
+	    toskew = -(int32)(tw - w);
    }
     
    /*
@@ -764,8 +755,9 @@ gtTileSeparate(TIFFRGBAImage* img, uint32* raster, uint32 w, uint32 h)
 	uint32 leftmost_tw;

 	tilesize = TIFFTileSize(tif);  
-	bufsize = _TIFFMultiplySSize(tif, alpha?4:3,tilesize, "gtTileSeparate");
+	bufsize = TIFFSafeMultiply(tmsize_t,alpha?4:3,tilesize);
 	if (bufsize == 0) {
+		TIFFErrorExt(tif->tif_clientdata, TIFFFileName(tif), "Integer overflow in %s", "gtTileSeparate");
 		return (0);
 	}

@@ -774,18 +766,10 @@ gtTileSeparate(TIFFRGBAImage* img, uint32* raster, uint32 w, uint32 h)

 	flip = setorientation(img);
 	if (flip & FLIP_VERTICALLY) {
-		if ((tw + w) > INT_MAX) {
-            TIFFErrorExt(tif->tif_clientdata, TIFFFileName(tif), "%s", "unsupported tile size (too wide)");
-            return (0);
-        }
 		y = h - 1;
 		toskew = -(int32)(tw + w);
 	}
 	else {
-		if (tw > (INT_MAX + w)) {
-            TIFFErrorExt(tif->tif_clientdata, TIFFFileName(tif), "%s", "unsupported tile size (too wide)");
-            return (0);
-        }
 		y = 0;
 		toskew = -(int32)(tw - w);
 	}
@@ -953,10 +937,6 @@ gtStripContig(TIFFRGBAImage* img, uint32* raster, uint32 w, uint32 h)

 	flip = setorientation(img);
 	if (flip & FLIP_VERTICALLY) {
-		if ( w > INT_MAX ) {
-        	TIFFErrorExt(tif->tif_clientdata, TIFFFileName(tif), "Width overflow");
-			return (0);
-		}
 		y = h - 1;
 		toskew = -(int32)(w + w);
 	} else {
@@ -970,23 +950,16 @@ gtStripContig(TIFFRGBAImage* img, uint32* raster, uint32 w, uint32 h)
 	fromskew = (w < imagewidth ? imagewidth - w : 0);
 	for (row = 0; row < h; row += nrow)
 	{
-		uint32 temp;
 		rowstoread = rowsperstrip - (row + img->row_offset) % rowsperstrip;
 		nrow = (row + rowstoread > h ? h - row : rowstoread);
 		nrowsub = nrow;
 		if ((nrowsub%subsamplingver)!=0)
 			nrowsub+=subsamplingver-nrowsub%subsamplingver;
-		temp = (row + img->row_offset)%rowsperstrip + nrowsub;
-		if( scanline > 0 && temp > (size_t)(TIFF_TMSIZE_T_MAX / scanline) )
-		{
-			TIFFErrorExt(tif->tif_clientdata, TIFFFileName(tif), "Integer overflow in gtStripContig");
-			return 0;
-		}
 		if (_TIFFReadEncodedStripAndAllocBuffer(tif,
 		    TIFFComputeStrip(tif,row+img->row_offset, 0),
 		    (void**)(&buf),
                    maxstripsize,
-		    temp * scanline)==(tmsize_t)(-1)
+		    ((row + img->row_offset)%rowsperstrip + nrowsub) * scanline)==(tmsize_t)(-1)
 		    && (buf == NULL || img->stoponerr))
 		{
 			ret = 0;
@@ -1046,17 +1019,14 @@ gtStripSeparate(TIFFRGBAImage* img, uint32* raster, uint32 w, uint32 h)
        uint16 colorchannels;

 	stripsize = TIFFStripSize(tif);  
-	bufsize = _TIFFMultiplySSize(tif,alpha?4:3,stripsize, "gtStripSeparate");
+	bufsize = TIFFSafeMultiply(tmsize_t,alpha?4:3,stripsize);
 	if (bufsize == 0) {
+		TIFFErrorExt(tif->tif_clientdata, TIFFFileName(tif), "Integer overflow in %s", "gtStripSeparate");
 		return (0);
 	}

 	flip = setorientation(img);
 	if (flip & FLIP_VERTICALLY) {
-		if ( w > INT_MAX ) {
-        	TIFFErrorExt(tif->tif_clientdata, TIFFFileName(tif), "Width overflow");
-			return (0);
-		}
 		y = h - 1;
 		toskew = -(int32)(w + w);
 	}
@@ -1083,22 +1053,15 @@ gtStripSeparate(TIFFRGBAImage* img, uint32* raster, uint32 w, uint32 h)
 	fromskew = (w < imagewidth ? imagewidth - w : 0);
 	for (row = 0; row < h; row += nrow)
 	{
-                uint32 temp;
 		rowstoread = rowsperstrip - (row + img->row_offset) % rowsperstrip;
 		nrow = (row + rowstoread > h ? h - row : rowstoread);
 		offset_row = row + img->row_offset;
-                temp = (row + img->row_offset)%rowsperstrip + nrow;
-                if( scanline > 0 && temp > (size_t)(TIFF_TMSIZE_T_MAX / scanline) )
-                {
-                        TIFFErrorExt(tif->tif_clientdata, TIFFFileName(tif), "Integer overflow in gtStripSeparate");
-                        return 0;
-                }
                if( buf == NULL )
                {
                    if (_TIFFReadEncodedStripAndAllocBuffer(
                            tif, TIFFComputeStrip(tif, offset_row, 0),
                            (void**) &buf, bufsize,
-                            temp * scanline)==(tmsize_t)(-1)
+                            ((row + img->row_offset)%rowsperstrip + nrow) * scanline)==(tmsize_t)(-1)
                        && (buf == NULL || img->stoponerr))
                    {
                            ret = 0;
@@ -1118,7 +1081,7 @@ gtStripSeparate(TIFFRGBAImage* img, uint32* raster, uint32 w, uint32 h)
                    }
                }
 		else if (TIFFReadEncodedStrip(tif, TIFFComputeStrip(tif, offset_row, 0),
-		    p0, temp * scanline)==(tmsize_t)(-1)
+		    p0, ((row + img->row_offset)%rowsperstrip + nrow) * scanline)==(tmsize_t)(-1)
 		    && img->stoponerr)
 		{
 			ret = 0;
@@ -1126,7 +1089,7 @@ gtStripSeparate(TIFFRGBAImage* img, uint32* raster, uint32 w, uint32 h)
 		}
 		if (colorchannels > 1 
                    && TIFFReadEncodedStrip(tif, TIFFComputeStrip(tif, offset_row, 1),
-                                            p1, temp * scanline) == (tmsize_t)(-1)
+                                            p1, ((row + img->row_offset)%rowsperstrip + nrow) * scanline) == (tmsize_t)(-1)
 		    && img->stoponerr)
 		{
 			ret = 0;
@@ -1134,7 +1097,7 @@ gtStripSeparate(TIFFRGBAImage* img, uint32* raster, uint32 w, uint32 h)
 		}
 		if (colorchannels > 1 
                    && TIFFReadEncodedStrip(tif, TIFFComputeStrip(tif, offset_row, 2),
-                                            p2, temp * scanline) == (tmsize_t)(-1)
+                                            p2, ((row + img->row_offset)%rowsperstrip + nrow) * scanline) == (tmsize_t)(-1)
 		    && img->stoponerr)
 		{
 			ret = 0;
@@ -1143,7 +1106,7 @@ gtStripSeparate(TIFFRGBAImage* img, uint32* raster, uint32 w, uint32 h)
 		if (alpha)
 		{
 			if (TIFFReadEncodedStrip(tif, TIFFComputeStrip(tif, offset_row, colorchannels),
-			    pa, temp * scanline)==(tmsize_t)(-1)
+			    pa, ((row + img->row_offset)%rowsperstrip + nrow) * scanline)==(tmsize_t)(-1)
 			    && img->stoponerr)
 			{
 				ret = 0;
@@ -2994,7 +2957,7 @@ TIFFReadRGBATileExt(TIFF* tif, uint32 col, uint32 row, uint32 * raster, int stop
    if( !TIFFIsTiled( tif ) )
    {
 		TIFFErrorExt(tif->tif_clientdata, TIFFFileName(tif),
-				  "Can't use TIFFReadRGBATile() with striped file.");
+				  "Can't use TIFFReadRGBATile() with stripped file.");
 		return (0);
    }
    
@@ -199,7 +199,6 @@ static int JBIGEncode(TIFF* tif, uint8* buffer, tmsize_t size, uint16 s)

 int TIFFInitJBIG(TIFF* tif, int scheme)
 {
-        (void)scheme;
 	assert(scheme == COMPRESSION_JBIG);

 	/*
@@ -466,8 +466,7 @@ std_empty_output_buffer(j_compress_ptr cinfo)
       }
 #endif

-	if( !TIFFFlushData1(tif) )
-            return FALSE;
+	TIFFFlushData1(tif);
 	sp->dest.next_output_byte = (JOCTET*) tif->tif_rawdata;
 	sp->dest.free_in_buffer = (size_t) tif->tif_rawdatasize;

@@ -781,9 +780,12 @@ JPEGFixupTagsSubsampling(TIFF* tif)
 	 */
 	static const char module[] = "JPEGFixupTagsSubsampling";
 	struct JPEGFixupTagsSubsamplingData m;
-        uint64 fileoffset = TIFFGetStrileOffset(tif, 0);

-        if( fileoffset == 0 )
+        _TIFFFillStriles( tif );
+        
+        if( tif->tif_dir.td_stripbytecount == NULL
+            || tif->tif_dir.td_stripoffset == NULL
+            || tif->tif_dir.td_stripbytecount[0] == 0 )
        {
            /* Do not even try to check if the first strip/tile does not
               yet exist, as occurs when GDAL has created a new NULL file
@@ -802,9 +804,9 @@ JPEGFixupTagsSubsampling(TIFF* tif)
 	}
 	m.buffercurrentbyte=NULL;
 	m.bufferbytesleft=0;
-	m.fileoffset=fileoffset;
+	m.fileoffset=tif->tif_dir.td_stripoffset[0];
 	m.filepositioned=0;
-	m.filebytesleft=TIFFGetStrileByteCount(tif, 0);
+	m.filebytesleft=tif->tif_dir.td_stripbytecount[0];
 	if (!JPEGFixupTagsSubsamplingSec(&m))
 		TIFFWarningExt(tif->tif_clientdata,module,
 		    "Unable to auto-correct subsampling values, likely corrupt JPEG compressed data in first strip/tile; auto-correcting skipped");
@@ -938,10 +940,7 @@ JPEGFixupTagsSubsamplingReadByte(struct JPEGFixupTagsSubsamplingData* data, uint
 			return(0);
 		if (!data->filepositioned)
 		{
-			if (TIFFSeekFile(data->tif,data->fileoffset,SEEK_SET) == (toff_t)-1)
-			{
-			    return 0;
-			}
+			TIFFSeekFile(data->tif,data->fileoffset,SEEK_SET);
 			data->filepositioned=1;
 		}
 		m=data->buffersize;
@@ -1210,37 +1209,35 @@ JPEGPreDecode(TIFF* tif, uint16 s)
            /* store for all coefficients */
            /* See call to jinit_d_coef_controller() from master_selection() */
            /* in libjpeg */
+            toff_t nRequiredMemory = (toff_t)sp->cinfo.d.image_width *
+                                     sp->cinfo.d.image_height *
+                                     sp->cinfo.d.num_components *
+                                     ((td->td_bitspersample+7)/8);
+            /* BLOCK_SMOOTHING_SUPPORTED is generally defined, so we need */
+            /* to replicate the logic of jinit_d_coef_controller() */
+            if( sp->cinfo.d.progressive_mode )
+                nRequiredMemory *= 3;

-            /* 1 MB for regular libjpeg usage */
-            toff_t nRequiredMemory = 1024 * 1024;
+#ifndef TIFF_LIBJPEG_LARGEST_MEM_ALLOC
+#define TIFF_LIBJPEG_LARGEST_MEM_ALLOC (100 * 1024 * 1024)
+#endif

-            for (ci = 0; ci < sp->cinfo.d.num_components; ci++) {
-                const jpeg_component_info *compptr = &(sp->cinfo.d.comp_info[ci]);
-                if( compptr->h_samp_factor > 0 && compptr->v_samp_factor > 0 )
-                {
-                    nRequiredMemory += (toff_t)(
-                        ((compptr->width_in_blocks + compptr->h_samp_factor - 1) / compptr->h_samp_factor)) *
-                        ((compptr->height_in_blocks + compptr->v_samp_factor - 1) / compptr->v_samp_factor) *
-                        sizeof(JBLOCK);
-                }
-            }
-
-            if( sp->cinfo.d.mem->max_memory_to_use > 0 &&
-                nRequiredMemory > (toff_t)(sp->cinfo.d.mem->max_memory_to_use) &&
+            if( nRequiredMemory > TIFF_LIBJPEG_LARGEST_MEM_ALLOC &&
                getenv("LIBTIFF_ALLOW_LARGE_LIBJPEG_MEM_ALLOC") == NULL )
            {
-                TIFFErrorExt(tif->tif_clientdata, module,
-                    "Reading this image would require libjpeg to allocate "
-                    "at least %u bytes. "
-                    "This is disabled since above the %u threshold. "
-                    "You may override this restriction by defining the "
-                    "LIBTIFF_ALLOW_LARGE_LIBJPEG_MEM_ALLOC environment variable, "
-                    "or setting the JPEGMEM environment variable to a value greater "
-                    "or equal to '%uM'",
-                    (unsigned)(nRequiredMemory),
-                    (unsigned)(sp->cinfo.d.mem->max_memory_to_use),
-                    (unsigned)((nRequiredMemory + 1000000 - 1) / 1000000));
-                return 0;
+                    TIFFErrorExt(tif->tif_clientdata, module,
+                        "Reading this strip would require libjpeg to allocate "
+                        "at least %u bytes. "
+                        "This is disabled since above the %u threshold. "
+                        "You may override this restriction by defining the "
+                        "LIBTIFF_ALLOW_LARGE_LIBJPEG_MEM_ALLOC environment variable, "
+                        "or recompile libtiff by defining the "
+                        "TIFF_LIBJPEG_LARGEST_MEM_ALLOC macro to a value greater "
+                        "than %u",
+                        (unsigned)nRequiredMemory,
+                        (unsigned)TIFF_LIBJPEG_LARGEST_MEM_ALLOC,
+                        (unsigned)TIFF_LIBJPEG_LARGEST_MEM_ALLOC);
+                    return (0);
            }
        }

@@ -1569,7 +1566,7 @@ JPEGDecodeRaw(TIFF* tif, uint8* buf, tmsize_t cc, uint16 s)
 					JSAMPLE *outptr = (JSAMPLE*)tmpbuf + clumpoffset;
 #else
 					JSAMPLE *outptr = (JSAMPLE*)buf + clumpoffset;
-					if (cc < (tmsize_t)(clumpoffset + (tmsize_t)samples_per_clump*(clumps_per_line-1) + hsamp)) {
+					if (cc < (tmsize_t) (clumpoffset + samples_per_clump*(clumps_per_line-1) + hsamp)) {
 						TIFFErrorExt(tif->tif_clientdata, "JPEGDecodeRaw",
 							     "application buffer not large enough for all data, possible subsampling issue");
 						return 0;
@@ -2129,8 +2126,8 @@ JPEGEncodeRaw(TIFF* tif, uint8* buf, tmsize_t cc, uint16 s)
 	/* data is expected to be supplied in multiples of a clumpline */
 	/* a clumpline is equivalent to v_sampling desubsampled scanlines */
 	/* TODO: the following calculation of bytesperclumpline, should substitute calculation of sp->bytesperline, except that it is per v_sampling lines */
-	bytesperclumpline = ((((tmsize_t)sp->cinfo.c.image_width+sp->h_sampling-1)/sp->h_sampling)
-			     *((tmsize_t)sp->h_sampling*sp->v_sampling+2)*sp->cinfo.c.data_precision+7)
+	bytesperclumpline = (((sp->cinfo.c.image_width+sp->h_sampling-1)/sp->h_sampling)
+			     *(sp->h_sampling*sp->v_sampling+2)*sp->cinfo.c.data_precision+7)
 			    /8;

 	nrows = ( cc / bytesperclumpline ) * sp->v_sampling;
@@ -2350,7 +2347,7 @@ JPEGVGetField(TIFF* tif, uint32 tag, va_list ap)
 	switch (tag) {
 		case TIFFTAG_JPEGTABLES:
 			*va_arg(ap, uint32*) = sp->jpegtables_length;
-			*va_arg(ap, const void**) = sp->jpegtables;
+			*va_arg(ap, void**) = sp->jpegtables;
 			break;
 		case TIFFTAG_JPEGQUALITY:
 			*va_arg(ap, int*) = sp->jpegquality;
@@ -2485,7 +2482,6 @@ TIFFInitJPEG(TIFF* tif, int scheme)
 {
 	JPEGState* sp;

-        (void)scheme;
 	assert(scheme == COMPRESSION_JPEG);

 	/*
@@ -193,7 +193,6 @@ LogL16Decode(TIFF* tif, uint8* op, tmsize_t occ, uint16 s)
 	tmsize_t cc;
 	int rc;

-        (void)s;
 	assert(s == 0);
 	assert(sp != NULL);

@@ -267,7 +266,6 @@ LogLuvDecode24(TIFF* tif, uint8* op, tmsize_t occ, uint16 s)
 	unsigned char* bp;
 	uint32* tp;

-        (void)s;
 	assert(s == 0);
 	assert(sp != NULL);

@@ -328,7 +326,6 @@ LogLuvDecode32(TIFF* tif, uint8* op, tmsize_t occ, uint16 s)
 	tmsize_t cc;
 	int rc;

-        (void)s;
 	assert(s == 0);
 	sp = DecoderState(tif);
 	assert(sp != NULL);
@@ -450,7 +447,6 @@ LogL16Encode(TIFF* tif, uint8* bp, tmsize_t cc, uint16 s)
 	int rc=0, mask;
 	tmsize_t beg;

-        (void)s;
 	assert(s == 0);
 	assert(sp != NULL);
 	npixels = cc / sp->pixel_size;
@@ -545,7 +541,6 @@ LogLuvEncode24(TIFF* tif, uint8* bp, tmsize_t cc, uint16 s)
 	uint8* op;
 	uint32* tp;

-        (void)s;
 	assert(s == 0);
 	assert(sp != NULL);
 	npixels = cc / sp->pixel_size;
@@ -603,7 +598,6 @@ LogLuvEncode32(TIFF* tif, uint8* bp, tmsize_t cc, uint16 s)
 	int rc=0, mask;
 	tmsize_t beg;

-        (void)s;
 	assert(s == 0);
 	assert(sp != NULL);

@@ -748,7 +742,7 @@ LogLuvEncodeTile(TIFF* tif, uint8* bp, tmsize_t cc, uint16 s)
 #undef exp2  /* Conflict with C'99 function */
 #define exp2(x)		exp(M_LN2*(x))

-static int tiff_itrunc(double x, int m)
+static int itrunc(double x, int m)
 {
    if( m == SGILOGENCODE_NODITHER )
        return (int)x;
@@ -783,9 +777,9 @@ LogL16fromY(double Y, int em)	/* get 16-bit LogL from Y */
 	if (Y <= -1.8371976e19)
 		return (0xffff);
 	if (Y > 5.4136769e-20)
-		return tiff_itrunc(256.*(log2(Y) + 64.), em);
+		return itrunc(256.*(log2(Y) + 64.), em);
 	if (Y < -5.4136769e-20)
-		return (~0x7fff | tiff_itrunc(256.*(log2(-Y) + 64.), em));
+		return (~0x7fff | itrunc(256.*(log2(-Y) + 64.), em));
 	return (0);
 }

@@ -861,7 +855,7 @@ LogL10fromY(double Y, int em)	/* get 10-bit LogL from Y */
 	else if (Y <= .00024283)
 		return (0);
 	else
-		return tiff_itrunc(64.*(log2(Y) + 12.), em);
+		return itrunc(64.*(log2(Y) + 12.), em);
 }

 #define NANGLES		100
@@ -931,12 +925,12 @@ uv_encode(double u, double v, int em)	/* encode (u',v') coordinates */

 	if (v < UV_VSTART)
 		return oog_encode(u, v);
-	vi = tiff_itrunc((v - UV_VSTART)*(1./UV_SQSIZ), em);
+	vi = itrunc((v - UV_VSTART)*(1./UV_SQSIZ), em);
 	if (vi >= UV_NVS)
 		return oog_encode(u, v);
 	if (u < uv_row[vi].ustart)
 		return oog_encode(u, v);
-	ui = tiff_itrunc((u - uv_row[vi].ustart)*(1./UV_SQSIZ), em);
+	ui = itrunc((u - uv_row[vi].ustart)*(1./UV_SQSIZ), em);
 	if (ui >= uv_row[vi].nus)
 		return oog_encode(u, v);

@@ -1105,7 +1099,7 @@ Luv24fromLuv48(LogLuvState* sp, uint8* op, tmsize_t n)
 		else if (sp->encode_meth == SGILOGENCODE_NODITHER)
 			Le = (luv3[0]-3314) >> 2;
 		else
-			Le = tiff_itrunc(.25*(luv3[0]-3314.), sp->encode_meth);
+			Le = itrunc(.25*(luv3[0]-3314.), sp->encode_meth);

 		Ce = uv_encode((luv3[1]+.5)/(1<<15), (luv3[2]+.5)/(1<<15),
 					sp->encode_meth);
@@ -1161,10 +1155,10 @@ LogLuv32fromXYZ(float XYZ[3], int em)
 		v = 9.*XYZ[1] / s;
 	}
 	if (u <= 0.) ue = 0;
-	else ue = tiff_itrunc(UVSCALE*u, em);
+	else ue = itrunc(UVSCALE*u, em);
 	if (ue > 255) ue = 255;
 	if (v <= 0.) ve = 0;
-	else ve = tiff_itrunc(UVSCALE*v, em);
+	else ve = itrunc(UVSCALE*v, em);
 	if (ve > 255) ve = 255;
 					/* combine encodings */
 	return (Le << 16 | ue << 8 | ve);
@@ -1244,8 +1238,8 @@ Luv32fromLuv48(LogLuvState* sp, uint8* op, tmsize_t n)
 	}
 	while (n-- > 0) {
 		*luv++ = (uint32)luv3[0] << 16 |
-	(tiff_itrunc(luv3[1]*(UVSCALE/(1<<15)), sp->encode_meth) << 8 & 0xff00) |
-		(tiff_itrunc(luv3[2]*(UVSCALE/(1<<15)), sp->encode_meth) & 0xff);
+	(itrunc(luv3[1]*(UVSCALE/(1<<15)), sp->encode_meth) << 8 & 0xff00) |
+		(itrunc(luv3[2]*(UVSCALE/(1<<15)), sp->encode_meth) & 0xff);
 		luv3 += 3;
 	}
 }
@@ -1275,10 +1269,16 @@ LogL16GuessDataFmt(TIFFDirectory *td)
 	return (SGILOGDATAFMT_UNKNOWN);
 }

+
+#define TIFF_SIZE_T_MAX ((size_t) ~ ((size_t)0))
+#define TIFF_TMSIZE_T_MAX (tmsize_t)(TIFF_SIZE_T_MAX >> 1)
+
 static tmsize_t
 multiply_ms(tmsize_t m1, tmsize_t m2)
 {
-        return _TIFFMultiplySSize(NULL, m1, m2, NULL);
+        if( m1 == 0 || m2 > TIFF_TMSIZE_T_MAX / m1 )
+            return 0;
+        return m1 * m2;
 }

 static int
@@ -1512,7 +1512,7 @@ LogLuvSetupEncode(TIFF* tif)
 	switch (td->td_photometric) {
 	case PHOTOMETRIC_LOGLUV:
 		if (!LogLuvInitState(tif))
-			return (0);
+			break;
 		if (td->td_compression == COMPRESSION_SGILOG24) {
 			tif->tif_encoderow = LogLuvEncode24;
 			switch (sp->user_datafmt) {
@@ -1545,7 +1545,7 @@ LogLuvSetupEncode(TIFF* tif)
 		break;
 	case PHOTOMETRIC_LOGL:
 		if (!LogL16InitState(tif))
-			return (0);
+			break;
 		tif->tif_encoderow = LogL16Encode;  
 		switch (sp->user_datafmt) {
 		case SGILOGDATAFMT_FLOAT:
@@ -1561,7 +1561,7 @@ LogLuvSetupEncode(TIFF* tif)
 		TIFFErrorExt(tif->tif_clientdata, module,
 		    "Inappropriate photometric interpretation %d for SGILog compression; %s",
 		    td->td_photometric, "must be either LogLUV or LogL");
-		return (0);
+		break;
 	}
 	sp->encoder_state = 1;
 	return (1);
@@ -300,8 +300,7 @@ LZMAEncode(TIFF* tif, uint8* bp, tmsize_t cc, uint16 s)
 		}
 		if (sp->stream.avail_out == 0) {
 			tif->tif_rawcc = tif->tif_rawdatasize;
-			if (!TIFFFlushData1(tif))
-				return 0;
+			TIFFFlushData1(tif);
 			sp->stream.next_out = tif->tif_rawdata;
 			sp->stream.avail_out = (size_t)tif->tif_rawdatasize;  /* this is a safe typecast, as check is made already in LZMAPreEncode */
 		}
@@ -329,8 +328,7 @@ LZMAPostEncode(TIFF* tif)
 			if ((tmsize_t)sp->stream.avail_out != tif->tif_rawdatasize) {
 				tif->tif_rawcc =
 					tif->tif_rawdatasize - sp->stream.avail_out;
-				if (!TIFFFlushData1(tif))
-					return 0;
+				TIFFFlushData1(tif);
 				sp->stream.next_out = tif->tif_rawdata;
 				sp->stream.avail_out = (size_t)tif->tif_rawdatasize;  /* this is a safe typecast, as check is made already in ZIPPreEncode */
 			}
@@ -420,7 +418,6 @@ TIFFInitLZMA(TIFF* tif, int scheme)
 	LZMAState* sp;
 	lzma_stream tmp_stream = LZMA_STREAM_INIT;

-        (void)scheme;
 	assert( scheme == COMPRESSION_LZMA );

 	/*
@@ -214,16 +214,19 @@ LZWSetupDecode(TIFF* tif)
 			return (0);
 		}

-		sp = DecoderState(tif);
-		sp->dec_codetab = NULL;
-		sp->dec_decode = NULL;
+		DecoderState(tif)->dec_codetab = NULL;
+		DecoderState(tif)->dec_decode = NULL;

 		/*
 		 * Setup predictor setup.
 		 */
 		(void) TIFFPredictorInit(tif);
+
+		sp = DecoderState(tif);
 	}

+	assert(sp != NULL);
+
 	if (sp->dec_codetab == NULL) {
 		sp->dec_codetab = (code_t*)_TIFFmalloc(CSIZE*sizeof (code_t));
 		if (sp->dec_codetab == NULL) {
@@ -1158,7 +1161,6 @@ int
 TIFFInitLZW(TIFF* tif, int scheme)
 {
 	static const char module[] = "TIFFInitLZW";
-        (void)scheme;
 	assert(scheme == COMPRESSION_LZW);
 	/*
 	 * Allocate state block so tag methods have storage to record values.
@@ -1216,7 +1218,7 @@ bad:
 * from this software without specific prior written permission.
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
- * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
+ * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
 */
 #endif /* LZW_SUPPORT */

@@ -74,7 +74,7 @@
   or errors, up to the point where either these values are read, or it's clear they
   aren't there. This means that some of the data is read twice, but we feel speed
   in correcting these values is important enough to warrant this sacrifice. Although
-   there is currently no define or other configuration mechanism to disable this behavior,
+   there is currently no define or other configuration mechanism to disable this behaviour,
   the actual header scanning is build to robustly respond with error report if it
   should encounter an uncorrected mismatch of subsampling values. See
   OJPEGReadHeaderInfoSecStreamSof.
@@ -243,7 +243,6 @@ typedef enum {
 typedef struct {
 	TIFF* tif;
        int decoder_ok;
-        int error_in_raw_data_decoding;
 	#ifndef LIBJPEG_ENCAP_EXTERNAL
 	JMP_BUF exit_jmpbuf;
 	#endif
@@ -421,7 +420,6 @@ TIFFInitOJPEG(TIFF* tif, int scheme)
 	static const char module[]="TIFFInitOJPEG";
 	OJPEGState* sp;

-        (void)scheme;
 	assert(scheme==COMPRESSION_OJPEG);

        /*
@@ -499,15 +497,15 @@ OJPEGVGetField(TIFF* tif, uint32 tag, va_list ap)
 			break;
 		case TIFFTAG_JPEGQTABLES:
 			*va_arg(ap,uint32*)=(uint32)sp->qtable_offset_count;
-			*va_arg(ap,const void**)=(const void*)sp->qtable_offset;
+			*va_arg(ap,void**)=(void*)sp->qtable_offset; 
 			break;
 		case TIFFTAG_JPEGDCTABLES:
 			*va_arg(ap,uint32*)=(uint32)sp->dctable_offset_count;
-			*va_arg(ap,const void**)=(const void*)sp->dctable_offset;
+			*va_arg(ap,void**)=(void*)sp->dctable_offset;  
 			break;
 		case TIFFTAG_JPEGACTABLES:
 			*va_arg(ap,uint32*)=(uint32)sp->actable_offset_count;
-			*va_arg(ap,const void**)=(const void*)sp->actable_offset;
+			*va_arg(ap,void**)=(void*)sp->actable_offset;
 			break;
 		case TIFFTAG_JPEGPROC:
 			*va_arg(ap,uint16*)=(uint16)sp->jpeg_proc;
@@ -659,7 +657,7 @@ static int
 OJPEGSetupDecode(TIFF* tif)
 {
 	static const char module[]="OJPEGSetupDecode";
-	TIFFWarningExt(tif->tif_clientdata,module,"Deprecated and troublesome old-style JPEG compression mode, please convert to new-style JPEG compression and notify vendor of writing software");
+	TIFFWarningExt(tif->tif_clientdata,module,"Depreciated and troublesome old-style JPEG compression mode, please convert to new-style JPEG compression and notify vendor of writing software");
 	return(1);
 }

@@ -680,7 +678,7 @@ OJPEGPreDecode(TIFF* tif, uint16 s)
 		if (OJPEGReadSecondarySos(tif,s)==0)
 			return(0);
 	}
-	if (isTiled(tif))
+	if isTiled(tif)
 		m=tif->tif_curtile;
 	else
 		m=tif->tif_curstrip;
@@ -744,7 +742,6 @@ OJPEGPreDecodeSkipRaw(TIFF* tif)
 		}
 		m-=sp->subsampling_convert_clines-sp->subsampling_convert_state;
 		sp->subsampling_convert_state=0;
-                sp->error_in_raw_data_decoding=0;
 	}
 	while (m>=sp->subsampling_convert_clines)
 	{
@@ -795,10 +792,6 @@ OJPEGDecode(TIFF* tif, uint8* buf, tmsize_t cc, uint16 s)
            TIFFErrorExt(tif->tif_clientdata,module,"Cannot decode: decoder not correctly initialized");
            return 0;
        }
-        if( sp->error_in_raw_data_decoding )
-        {
-            return 0;
-        }
 	if (sp->libjpeg_jpeg_query_style==0)
 	{
 		if (OJPEGDecodeRaw(tif,buf,cc)==0)
@@ -839,10 +832,7 @@ OJPEGDecodeRaw(TIFF* tif, uint8* buf, tmsize_t cc)
 		if (sp->subsampling_convert_state==0)
 		{
 			if (jpeg_read_raw_data_encap(sp,&(sp->libjpeg_jpeg_decompress_struct),sp->subsampling_convert_ycbcrimage,sp->subsampling_ver*8)==0)
-			{
-				sp->error_in_raw_data_decoding = 1;
 				return(0);
-			}
 		}
 		oy=sp->subsampling_convert_ybuf+sp->subsampling_convert_state*sp->subsampling_ver*sp->subsampling_convert_ylinelen;
 		ocb=sp->subsampling_convert_cbbuf+sp->subsampling_convert_state*sp->subsampling_convert_clinelen;
@@ -1000,6 +990,7 @@ OJPEGSubsamplingCorrect(TIFF* tif)
 	OJPEGState* sp=(OJPEGState*)tif->tif_data;
 	uint8 mh;
 	uint8 mv;
+        _TIFFFillStriles( tif );
        
 	assert(sp->subsamplingcorrect_done==0);
 	if ((tif->tif_dir.td_samplesperpixel!=3) || ((tif->tif_dir.td_photometric!=PHOTOMETRIC_YCBCR) &&
@@ -1055,7 +1046,7 @@ OJPEGReadHeaderInfo(TIFF* tif)
 	assert(sp->readheader_done==0);
 	sp->image_width=tif->tif_dir.td_imagewidth;
 	sp->image_length=tif->tif_dir.td_imagelength;
-	if (isTiled(tif))
+	if isTiled(tif)
 	{
 		sp->strile_width=tif->tif_dir.td_tilewidth;
 		sp->strile_length=tif->tif_dir.td_tilelength;
@@ -1065,8 +1056,6 @@ OJPEGReadHeaderInfo(TIFF* tif)
 	{
 		sp->strile_width=sp->image_width;
 		sp->strile_length=tif->tif_dir.td_rowsperstrip;
-                if( sp->strile_length == (uint32)-1 )
-                    sp->strile_length = sp->image_length;
 		sp->strile_length_total=sp->image_length;
 	}
 	if (tif->tif_dir.td_samplesperpixel==1)
@@ -1093,12 +1082,6 @@ OJPEGReadHeaderInfo(TIFF* tif)
 	}
 	if (sp->strile_length<sp->image_length)
 	{
-		if (((sp->subsampling_hor!=1) && (sp->subsampling_hor!=2) && (sp->subsampling_hor!=4)) ||
-		    ((sp->subsampling_ver!=1) && (sp->subsampling_ver!=2) && (sp->subsampling_ver!=4)))
-		{
-			TIFFErrorExt(tif->tif_clientdata,module,"Invalid subsampling values");
-			return(0);
-		}
 		if (sp->strile_length%(sp->subsampling_ver*8)!=0)
 		{
 			TIFFErrorExt(tif->tif_clientdata,module,"Incompatible vertical subsampling and image strip/tile length");
@@ -1214,13 +1197,7 @@ OJPEGWriteHeaderInfo(TIFF* tif)
 			sp->subsampling_convert_ybuflen=sp->subsampling_convert_ylinelen*sp->subsampling_convert_ylines;
 			sp->subsampling_convert_cbuflen=sp->subsampling_convert_clinelen*sp->subsampling_convert_clines;
 			sp->subsampling_convert_ycbcrbuflen=sp->subsampling_convert_ybuflen+2*sp->subsampling_convert_cbuflen;
-                        /* The calloc is not normally necessary, except in some edge/broken cases */
-                        /* for example for a tiled image of height 1 with a tile height of 1 and subsampling_hor=subsampling_ver=2 */
-                        /* In that case, libjpeg will only fill the 8 first lines of the 16 lines */
-                        /* See https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=16844 */
-                        /* Even if this case is allowed (?), its handling is broken because OJPEGPreDecode() should also likely */
-                        /* reset subsampling_convert_state to 0 when changing tile. */
-			sp->subsampling_convert_ycbcrbuf=_TIFFcalloc(1, sp->subsampling_convert_ycbcrbuflen);
+			sp->subsampling_convert_ycbcrbuf=_TIFFmalloc(sp->subsampling_convert_ycbcrbuflen);
 			if (sp->subsampling_convert_ycbcrbuf==0)
 			{
 				TIFFErrorExt(tif->tif_clientdata,module,"Out of memory");
@@ -1246,11 +1223,10 @@ OJPEGWriteHeaderInfo(TIFF* tif)
 				*m++=sp->subsampling_convert_cbbuf+n*sp->subsampling_convert_clinelen;
 			for (n=0; n<sp->subsampling_convert_clines; n++)
 				*m++=sp->subsampling_convert_crbuf+n*sp->subsampling_convert_clinelen;
-			sp->subsampling_convert_clinelenout=sp->strile_width/sp->subsampling_hor + ((sp->strile_width % sp->subsampling_hor) != 0 ? 1 : 0);
+			sp->subsampling_convert_clinelenout=((sp->strile_width+sp->subsampling_hor-1)/sp->subsampling_hor);
 			sp->subsampling_convert_state=0;
-			sp->error_in_raw_data_decoding=0;
 			sp->bytes_per_line=sp->subsampling_convert_clinelenout*(sp->subsampling_ver*sp->subsampling_hor+2);
-			sp->lines_per_strile=sp->strile_length/sp->subsampling_ver + ((sp->strile_length % sp->subsampling_ver) != 0 ? 1 : 0);
+			sp->lines_per_strile=((sp->strile_length+sp->subsampling_ver-1)/sp->subsampling_ver);
 			sp->subsampling_convert_log=1;
 		}
 	}
@@ -1264,26 +1240,6 @@ OJPEGWriteHeaderInfo(TIFF* tif)
 	}
 	if (jpeg_start_decompress_encap(sp,&(sp->libjpeg_jpeg_decompress_struct))==0)
 		return(0);
-        if(sp->libjpeg_jpeg_decompress_struct.image_width != sp->strile_width ) {
-            TIFFErrorExt(tif->tif_clientdata,module,
-                         "jpeg_start_decompress() returned image_width = %d, "
-                         "expected %d",
-                         sp->libjpeg_jpeg_decompress_struct.image_width,
-                         sp->strile_width);
-            return 0;
-        }
-        if(sp->libjpeg_jpeg_decompress_struct.max_h_samp_factor != sp->subsampling_hor ||
-           sp->libjpeg_jpeg_decompress_struct.max_v_samp_factor != sp->subsampling_ver) {
-            TIFFErrorExt(tif->tif_clientdata,module,
-                         "jpeg_start_decompress() returned max_h_samp_factor = %d "
-                         "and max_v_samp_factor = %d, expected %d and %d",
-                         sp->libjpeg_jpeg_decompress_struct.max_h_samp_factor,
-                         sp->libjpeg_jpeg_decompress_struct.max_v_samp_factor,
-                         sp->subsampling_hor,
-                         sp->subsampling_ver);
-            return 0;
-        }
-
 	sp->writeheader_done=1;
 	return(1);
 }
@@ -1316,9 +1272,7 @@ OJPEGReadHeaderInfoSec(TIFF* tif)
 		}
 		else
 		{
-			if ((sp->jpeg_interchange_format_length==0) ||
-                            (sp->jpeg_interchange_format > TIFF_UINT64_MAX - sp->jpeg_interchange_format_length) ||
-                            (sp->jpeg_interchange_format+sp->jpeg_interchange_format_length>sp->file_size))
+			if ((sp->jpeg_interchange_format_length==0) || (sp->jpeg_interchange_format+sp->jpeg_interchange_format_length>sp->file_size))
 				sp->jpeg_interchange_format_length=sp->file_size-sp->jpeg_interchange_format;
 		}
 	}
@@ -2035,30 +1989,32 @@ OJPEGReadBufferFill(OJPEGState* sp)
 				sp->in_buffer_source=osibsStrile;
                                break;
 			case osibsStrile:
+				if (!_TIFFFillStriles( sp->tif ) 
+				    || sp->tif->tif_dir.td_stripoffset == NULL
+				    || sp->tif->tif_dir.td_stripbytecount == NULL)
+					return 0;
+
 				if (sp->in_buffer_next_strile==sp->in_buffer_strile_count)
 					sp->in_buffer_source=osibsEof;
 				else
 				{
-					int err = 0;
-					sp->in_buffer_file_pos=TIFFGetStrileOffsetWithErr(sp->tif, sp->in_buffer_next_strile, &err);
-					if( err )
-						return 0;
+					sp->in_buffer_file_pos=sp->tif->tif_dir.td_stripoffset[sp->in_buffer_next_strile];
 					if (sp->in_buffer_file_pos!=0)
 					{
-						uint64 bytecount = TIFFGetStrileByteCountWithErr(sp->tif, sp->in_buffer_next_strile, &err);
-						if( err )
-							return 0;
 						if (sp->in_buffer_file_pos>=sp->file_size)
 							sp->in_buffer_file_pos=0;
-						else if (bytecount==0)
+						else if (sp->tif->tif_dir.td_stripbytecount==NULL)
 							sp->in_buffer_file_togo=sp->file_size-sp->in_buffer_file_pos;
 						else
 						{
-							sp->in_buffer_file_togo=bytecount;
+							if (sp->tif->tif_dir.td_stripbytecount == 0) {
+								TIFFErrorExt(sp->tif->tif_clientdata,sp->tif->tif_name,"Strip byte counts are missing");
+								return(0);
+							}
+							sp->in_buffer_file_togo=sp->tif->tif_dir.td_stripbytecount[sp->in_buffer_next_strile];
 							if (sp->in_buffer_file_togo==0)
 								sp->in_buffer_file_pos=0;
-							else if (sp->in_buffer_file_pos > TIFF_UINT64_MAX - sp->in_buffer_file_togo || 
-                                                                sp->in_buffer_file_pos+sp->in_buffer_file_togo>sp->file_size)
+							else if (sp->in_buffer_file_pos+sp->in_buffer_file_togo>sp->file_size)
 								sp->in_buffer_file_togo=sp->file_size-sp->in_buffer_file_pos;
 						}
 					}
@@ -104,7 +104,6 @@ TIFFClientOpen(
 		} n;
 		n.a8[0]=1;
 		n.a8[1]=0;
-                (void)n;
 		#ifdef WORDS_BIGENDIAN
 		assert(n.a16==256);
 		#else
@@ -132,7 +131,6 @@ TIFFClientOpen(
 	if (!readproc || !writeproc || !seekproc || !closeproc || !sizeproc) {
 		TIFFErrorExt(clientdata, module,
 		    "One of the client procedures is NULL pointer.");
-		_TIFFfree(tif);
 		goto bad2;
 	}
 	tif->tif_readproc = readproc;
@@ -166,7 +164,7 @@ TIFFClientOpen(
 	/*
 	 * Process library-specific flags in the open mode string.
 	 * The following flags may be used to control intrinsic library
-	 * behavior that may or may not be desirable (usually for
+	 * behaviour that may or may not be desirable (usually for
 	 * compatibility with some application that claims to support
 	 * TIFF but only supports some brain dead idea of what the
 	 * vendor thinks TIFF is):
@@ -183,8 +181,6 @@ TIFFClientOpen(
 	 * 'h' read TIFF header only, do not load the first IFD
 	 * '4' ClassicTIFF for creating a file (default)
 	 * '8' BigTIFF for creating a file
-         * 'D' enable use of deferred strip/tile offset/bytecount array loading.
-         * 'O' on-demand loading of values instead of whole array loading (implies D)
 	 *
 	 * The use of the 'l' and 'b' flags is strongly discouraged.
 	 * These flags are provided solely because numerous vendors,
@@ -207,7 +203,7 @@ TIFFClientOpen(
 	 * not do right now.
 	 *
 	 * The 'M' and 'm' flags are provided because some virtual memory
-	 * systems exhibit poor behavior when large images are mapped.
+	 * systems exhibit poor behaviour when large images are mapped.
 	 * These options permit clients to control the use of memory-mapped
 	 * files on a per-file basis.
 	 *
@@ -266,22 +262,7 @@ TIFFClientOpen(
 				if (m&O_CREAT)
 					tif->tif_flags |= TIFF_BIGTIFF;
 				break;
-			case 'D':
-			        tif->tif_flags |= TIFF_DEFERSTRILELOAD;
-				break;
-			case 'O':
-				if( m == O_RDONLY )
-					tif->tif_flags |= (TIFF_LAZYSTRILELOAD | TIFF_DEFERSTRILELOAD);
-				break;
 		}
-
-#ifdef DEFER_STRILE_LOAD
-        /* Compatibility with old DEFER_STRILE_LOAD compilation flag */
-        /* Probably unneeded, since to the best of my knowledge (E. Rouault) */
-        /* GDAL was the only user of this, and will now use the new 'D' flag */
-        tif->tif_flags |= TIFF_DEFERSTRILELOAD;
-#endif
-
 	/*
 	 * Read in TIFF header.
 	 */
@@ -634,10 +634,16 @@ PixarLogGuessDataFmt(TIFFDirectory *td)
 	return guess;
 }

+#define TIFF_SIZE_T_MAX ((size_t) ~ ((size_t)0))
+#define TIFF_TMSIZE_T_MAX (tmsize_t)(TIFF_SIZE_T_MAX >> 1)
+
 static tmsize_t
 multiply_ms(tmsize_t m1, tmsize_t m2)
 {
-        return _TIFFMultiplySSize(NULL, m1, m2, NULL);
+        assert(m1 >= 0 && m2 >= 0);
+        if( m1 == 0 || m2 > TIFF_TMSIZE_T_MAX / m1 )
+            return 0;
+        return m1 * m2;
 }

 static tmsize_t
@@ -1147,7 +1153,7 @@ PixarLogEncode(TIFF* tif, uint8* bp, tmsize_t cc, uint16 s)

 	llen = sp->stride * td->td_imagewidth;
    /* Check against the number of elements (of size uint16) of sp->tbuf */
-    if( n > ((tmsize_t)td->td_rowsperstrip * llen) )
+    if( n > (tmsize_t)(td->td_rowsperstrip * llen) )
    {
        TIFFErrorExt(tif->tif_clientdata, module,
                     "Too many input bytes provided");
@@ -1200,8 +1206,7 @@ PixarLogEncode(TIFF* tif, uint8* bp, tmsize_t cc, uint16 s)
 		}
 		if (sp->stream.avail_out == 0) {
 			tif->tif_rawcc = tif->tif_rawdatasize;
-			if (!TIFFFlushData1(tif))
-				return 0;
+			TIFFFlushData1(tif);
 			sp->stream.next_out = tif->tif_rawdata;
 			sp->stream.avail_out = (uInt) tif->tif_rawdatasize;  /* this is a safe typecast, as check is made already in PixarLogPreEncode */
 		}
@@ -1231,8 +1236,7 @@ PixarLogPostEncode(TIFF* tif)
 		    if ((tmsize_t)sp->stream.avail_out != tif->tif_rawdatasize) {
 			    tif->tif_rawcc =
 				tif->tif_rawdatasize - sp->stream.avail_out;
-			    if (!TIFFFlushData1(tif))
-                                return 0;
+			    TIFFFlushData1(tif);
 			    sp->stream.next_out = tif->tif_rawdata;
 			    sp->stream.avail_out = (uInt) tif->tif_rawdatasize;  /* this is a safe typecast, as check is made already in PixarLogPreEncode */
 		    }
@@ -1400,7 +1404,6 @@ TIFFInitPixarLog(TIFF* tif, int scheme)

 	PixarLogState* sp;

-        (void)scheme;
 	assert(scheme == COMPRESSION_PIXARLOG);

 	/*
@@ -116,7 +116,7 @@ PredictorSetupDecode(TIFF* tif)
 	TIFFDirectory* td = &tif->tif_dir;

 	/* Note: when PredictorSetup() fails, the effets of setupdecode() */
-	/* will not be "canceled" so setupdecode() might be robust to */
+	/* will not be "cancelled" so setupdecode() might be robust to */
 	/* be called several times. */
 	if (!(*sp->setupdecode)(tif) || !PredictorSetup(tif))
 		return 0;
@@ -270,8 +270,8 @@ PredictorSetupEncode(TIFF* tif)
    }

 /* Remarks related to C standard compliance in all below functions : */
-/* - to avoid any undefined behavior, we only operate on unsigned types */
-/*   since the behavior of "overflows" is defined (wrap over) */
+/* - to avoid any undefined behaviour, we only operate on unsigned types */
+/*   since the behaviour of "overflows" is defined (wrap over) */
 /* - when storing into the byte stream, we explicitly mask with 0xff so */
 /*   as to make icc -check=conversions happy (not necessary by the standard) */

@@ -652,6 +652,8 @@ TIFFPrintDirectory(TIFF* tif, FILE* fd, long flags)
 	if (tif->tif_tagmethods.printdir)
 		(*tif->tif_tagmethods.printdir)(tif, fd, flags);

+        _TIFFFillStriles( tif );
+        
 	if ((flags & TIFFPRINT_STRIPS) &&
 	    TIFFFieldSet(tif,FIELD_STRIPOFFSETS)) {
 		uint32 s;
@@ -663,13 +665,13 @@ TIFFPrintDirectory(TIFF* tif, FILE* fd, long flags)
 #if defined(__WIN32__) && (defined(_MSC_VER) || defined(__MINGW32__))
 			fprintf(fd, "    %3lu: [%8I64u, %8I64u]\n",
 			    (unsigned long) s,
-			    (unsigned __int64) TIFFGetStrileOffset(tif, s),
-			    (unsigned __int64) TIFFGetStrileByteCount(tif, s));
+			    td->td_stripoffset ? (unsigned __int64) td->td_stripoffset[s] : 0,
+			    td->td_stripbytecount ? (unsigned __int64) td->td_stripbytecount[s] : 0);
 #else
 			fprintf(fd, "    %3lu: [%8llu, %8llu]\n",
 			    (unsigned long) s,
-			    (unsigned long long) TIFFGetStrileOffset(tif, s),
-			    (unsigned long long) TIFFGetStrileByteCount(tif, s));
+			    td->td_stripoffset ? (unsigned long long) td->td_stripoffset[s] : 0,
+			    td->td_stripbytecount ? (unsigned long long) td->td_stripbytecount[s] : 0);
 #endif
 	}
 }
@@ -29,6 +29,9 @@
 #include "tiffiop.h"
 #include <stdio.h>

+#define TIFF_SIZE_T_MAX ((size_t) ~ ((size_t)0))
+#define TIFF_TMSIZE_T_MAX (tmsize_t)(TIFF_SIZE_T_MAX >> 1)
+
 int TIFFFillStrip(TIFF* tif, uint32 strip);
 int TIFFFillTile(TIFF* tif, uint32 tile);
 static int TIFFStartStrip(TIFF* tif, uint32 strip);
@@ -46,8 +49,6 @@ TIFFReadRawTile1(TIFF* tif, uint32 tile, void* buf, tmsize_t size, const char* m
 #define THRESHOLD_MULTIPLIER 10
 #define MAX_THRESHOLD (THRESHOLD_MULTIPLIER * THRESHOLD_MULTIPLIER * THRESHOLD_MULTIPLIER * INITIAL_THRESHOLD)

-#define TIFF_INT64_MAX ((((int64)0x7FFFFFFF) << 32) | 0xFFFFFFFF)
-
 /* Read 'size' bytes in tif_rawdata buffer starting at offset 'rawdata_offset'
 * Returns 1 in case of success, 0 otherwise. */
 static int TIFFReadAndRealloc( TIFF* tif, tmsize_t size,
@@ -60,22 +61,6 @@ static int TIFFReadAndRealloc( TIFF* tif, tmsize_t size,
 #endif
        tmsize_t already_read = 0;

-
-#if SIZEOF_SIZE_T != 8
-        /* On 32 bit processes, if the request is large enough, check against */
-        /* file size */
-        if( size > 1000 * 1000 * 1000 )
-        {
-            uint64 filesize = TIFFGetFileSize(tif);
-            if( (uint64)size >= filesize )
-            {
-                TIFFErrorExt(tif->tif_clientdata, module,
-                             "Chunk size requested is larger than file size.");
-                return 0;
-            }
-        }
-#endif
-
        /* On 64 bit processes, read first a maximum of 1 MB, then 10 MB, etc */
        /* so as to avoid allocating too much memory in case the file is too */
        /* short. We could ask for the file size, but this might be */
@@ -190,14 +175,17 @@ TIFFFillStripPartial( TIFF *tif, int strip, tmsize_t read_ahead, int restart )
        tmsize_t to_read;
        tmsize_t read_ahead_mod;
        /* tmsize_t bytecountm; */
-
+        
+        if (!_TIFFFillStriles( tif ) || !tif->tif_dir.td_stripbytecount)
+            return 0;
+        
        /*
         * Expand raw data buffer, if needed, to hold data
         * strip coming from file (perhaps should set upper
         * bound on the size of a buffer we'll use?).
         */

-        /* bytecountm=(tmsize_t) TIFFGetStrileByteCount(tif, strip); */
+        /* bytecountm=(tmsize_t) td->td_stripbytecount[strip]; */

        /* Not completely sure where the * 2 comes from, but probably for */
        /* an exponentional growth strategy of tif_rawdatasize */
@@ -241,7 +229,7 @@ TIFFFillStripPartial( TIFF *tif, int strip, tmsize_t read_ahead, int restart )
        /*
        ** Seek to the point in the file where more data should be read.
        */
-        read_offset = TIFFGetStrileOffset(tif, strip)
+        read_offset = td->td_stripoffset[strip]
                + tif->tif_rawdataoff + tif->tif_rawdataloaded;

        if (!SeekOK(tif, read_offset)) {
@@ -258,10 +246,10 @@ TIFFFillStripPartial( TIFF *tif, int strip, tmsize_t read_ahead, int restart )
                to_read = read_ahead_mod - unused_data;
        else
                to_read = tif->tif_rawdatasize - unused_data;
-        if( (uint64) to_read > TIFFGetStrileByteCount(tif, strip)
+        if( (uint64) to_read > td->td_stripbytecount[strip] 
            - tif->tif_rawdataoff - tif->tif_rawdataloaded )
        {
-                to_read = (tmsize_t) TIFFGetStrileByteCount(tif, strip)
+                to_read = (tmsize_t) td->td_stripbytecount[strip]
                        - tif->tif_rawdataoff - tif->tif_rawdataloaded;
        }

@@ -300,7 +288,7 @@ TIFFFillStripPartial( TIFF *tif, int strip, tmsize_t read_ahead, int restart )
            /* For JPEG, if there are multiple scans (can generally be known */
            /* with the  read_ahead used), we need to read the whole strip */
            if( tif->tif_dir.td_compression==COMPRESSION_JPEG &&
-                (uint64)tif->tif_rawcc < TIFFGetStrileByteCount(tif, strip) )
+                (uint64)tif->tif_rawcc < td->td_stripbytecount[strip] )
            {
                if( TIFFJPEGIsFullStripRequired(tif) )
                {
@@ -359,7 +347,9 @@ TIFFSeek(TIFF* tif, uint32 row, uint16 sample )
         * read it a few lines at a time?
         */
 #if defined(CHUNKY_STRIP_READ_SUPPORT)
-        whole_strip = TIFFGetStrileByteCount(tif, strip) < 10
+        if (!_TIFFFillStriles( tif ) || !tif->tif_dir.td_stripbytecount)
+            return 0;
+        whole_strip = tif->tif_dir.td_stripbytecount[strip] < 10
                || isMapped(tif);
        if( td->td_compression == COMPRESSION_LERC ||
            td->td_compression == COMPRESSION_JBIG )
@@ -412,7 +402,7 @@ TIFFSeek(TIFF* tif, uint32 row, uint16 sample )
        else if( !whole_strip )
        {
                if( ((tif->tif_rawdata + tif->tif_rawdataloaded) - tif->tif_rawcp) < read_ahead 
-                    && (uint64) tif->tif_rawdataoff+tif->tif_rawdataloaded < TIFFGetStrileByteCount(tif, strip) )
+                    && (uint64) tif->tif_rawdataoff+tif->tif_rawdataloaded < td->td_stripbytecount[strip] )
                {
                        if( !TIFFFillStripPartial(tif,strip,read_ahead,0) )
                                return 0;
@@ -609,11 +599,16 @@ static tmsize_t
 TIFFReadRawStrip1(TIFF* tif, uint32 strip, void* buf, tmsize_t size,
    const char* module)
 {
+	TIFFDirectory *td = &tif->tif_dir;
+
+    if (!_TIFFFillStriles( tif ))
+        return ((tmsize_t)(-1));
+        
 	assert((tif->tif_flags&TIFF_NOREADRAW)==0);
 	if (!isMapped(tif)) {
 		tmsize_t cc;

-		if (!SeekOK(tif, TIFFGetStrileOffset(tif, strip))) {
+		if (!SeekOK(tif, td->td_stripoffset[strip])) {
 			TIFFErrorExt(tif->tif_clientdata, module,
 			    "Seek error at scanline %lu, strip %lu",
 			    (unsigned long) tif->tif_row, (unsigned long) strip);
@@ -639,8 +634,8 @@ TIFFReadRawStrip1(TIFF* tif, uint32 strip, void* buf, tmsize_t size,
 	} else {
 		tmsize_t ma = 0;
 		tmsize_t n;
-		if ((TIFFGetStrileOffset(tif, strip) > (uint64)TIFF_TMSIZE_T_MAX)||
-                    ((ma=(tmsize_t)TIFFGetStrileOffset(tif, strip))>tif->tif_size))
+		if ((td->td_stripoffset[strip] > (uint64)TIFF_TMSIZE_T_MAX)||
+                    ((ma=(tmsize_t)td->td_stripoffset[strip])>tif->tif_size))
                {
                    n=0;
                }
@@ -684,10 +679,12 @@ static tmsize_t
 TIFFReadRawStripOrTile2(TIFF* tif, uint32 strip_or_tile, int is_strip,
                        tmsize_t size, const char* module)
 {
+        TIFFDirectory *td = &tif->tif_dir;
+
        assert( !isMapped(tif) );
        assert((tif->tif_flags&TIFF_NOREADRAW)==0);

-        if (!SeekOK(tif, TIFFGetStrileOffset(tif, strip_or_tile))) {
+        if (!SeekOK(tif, td->td_stripoffset[strip_or_tile])) {
            if( is_strip )
            {
                TIFFErrorExt(tif->tif_clientdata, module,
@@ -723,7 +720,7 @@ TIFFReadRawStrip(TIFF* tif, uint32 strip, void* buf, tmsize_t size)
 {
 	static const char module[] = "TIFFReadRawStrip";
 	TIFFDirectory *td = &tif->tif_dir;
-	uint64 bytecount64;
+	uint64 bytecount;
 	tmsize_t bytecountm;

 	if (!TIFFCheckRead(tif, 0))
@@ -741,23 +738,31 @@ TIFFReadRawStrip(TIFF* tif, uint32 strip, void* buf, tmsize_t size)
 		    "Compression scheme does not support access to raw uncompressed data");
 		return ((tmsize_t)(-1));
 	}
-	bytecount64 = TIFFGetStrileByteCount(tif, strip);
-	if (size != (tmsize_t)(-1) && (uint64)size <= bytecount64)
-		bytecountm = size;
-	else
-		bytecountm = _TIFFCastUInt64ToSSize(tif, bytecount64, module);
-	if( bytecountm == 0 ) {
+	bytecount = td->td_stripbytecount[strip];
+	if ((int64)bytecount <= 0) {
+#if defined(__WIN32__) && (defined(_MSC_VER) || defined(__MINGW32__))
+		TIFFErrorExt(tif->tif_clientdata, module,
+			     "%I64u: Invalid strip byte count, strip %lu",
+			     (unsigned __int64) bytecount,
+			     (unsigned long) strip);
+#else
+		TIFFErrorExt(tif->tif_clientdata, module,
+			     "%llu: Invalid strip byte count, strip %lu",
+			     (unsigned long long) bytecount,
+			     (unsigned long) strip);
+#endif
 		return ((tmsize_t)(-1));
 	}
+	bytecountm = (tmsize_t)bytecount;
+	if ((uint64)bytecountm!=bytecount) {
+		TIFFErrorExt(tif->tif_clientdata, module, "Integer overflow");
+		return ((tmsize_t)(-1));
+	}
+	if (size != (tmsize_t)(-1) && size < bytecountm)
+		bytecountm = size;
 	return (TIFFReadRawStrip1(tif, strip, buf, bytecountm, module));
 }

-TIFF_NOSANITIZE_UNSIGNED_INT_OVERFLOW
-static uint64 NoSanitizeSubUInt64(uint64 a, uint64 b)
-{
-    return a - b;
-}
-
 /*
 * Read the specified strip and setup for decoding. The data buffer is
 * expanded, as necessary, to hold the strip's data.
@@ -768,10 +773,13 @@ TIFFFillStrip(TIFF* tif, uint32 strip)
 	static const char module[] = "TIFFFillStrip";
 	TIFFDirectory *td = &tif->tif_dir;

+        if (!_TIFFFillStriles( tif ) || !tif->tif_dir.td_stripbytecount)
+            return 0;
+
 	if ((tif->tif_flags&TIFF_NOREADRAW)==0)
 	{
-		uint64 bytecount = TIFFGetStrileByteCount(tif, strip);
-		if( bytecount == 0 || bytecount > (uint64)TIFF_INT64_MAX ) {
+		uint64 bytecount = td->td_stripbytecount[strip];
+		if ((int64)bytecount <= 0) {
 #if defined(__WIN32__) && (defined(_MSC_VER) || defined(__MINGW32__))
 			TIFFErrorExt(tif->tif_clientdata, module,
 				"Invalid strip byte count %I64u, strip %lu",
@@ -798,7 +806,7 @@ TIFFFillStrip(TIFF* tif, uint32 strip)
 			    (bytecount - 4096) / 10 > (uint64)stripsize  )
 			{
 				uint64 newbytecount = (uint64)stripsize * 10 + 4096;
-				if( newbytecount == 0 || newbytecount > (uint64)TIFF_INT64_MAX )
+				if( (int64)newbytecount >= 0 )
 				{
 #if defined(__WIN32__) && (defined(_MSC_VER) || defined(__MINGW32__))
 					TIFFWarningExt(tif->tif_clientdata, module,
@@ -823,13 +831,13 @@ TIFFFillStrip(TIFF* tif, uint32 strip)
 			 * We must check for overflow, potentially causing
 			 * an OOB read. Instead of simple
 			 *
-			 *  TIFFGetStrileOffset(tif, strip)+bytecount > tif->tif_size
+			 *  td->td_stripoffset[strip]+bytecount > tif->tif_size
 			 *
 			 * comparison (which can overflow) we do the following
 			 * two comparisons:
 			 */
 			if (bytecount > (uint64)tif->tif_size ||
-			    TIFFGetStrileOffset(tif, strip) > (uint64)tif->tif_size - bytecount) {
+			    td->td_stripoffset[strip] > (uint64)tif->tif_size - bytecount) {
 				/*
 				 * This error message might seem strange, but
 				 * it's what would happen if a read were done
@@ -841,7 +849,7 @@ TIFFFillStrip(TIFF* tif, uint32 strip)
 					"Read error on strip %lu; "
 					"got %I64u bytes, expected %I64u",
 					(unsigned long) strip,
-					(unsigned __int64) NoSanitizeSubUInt64(tif->tif_size, TIFFGetStrileOffset(tif, strip)),
+					(unsigned __int64) tif->tif_size - td->td_stripoffset[strip],
 					(unsigned __int64) bytecount);
 #else
 				TIFFErrorExt(tif->tif_clientdata, module,
@@ -849,7 +857,7 @@ TIFFFillStrip(TIFF* tif, uint32 strip)
 					"Read error on strip %lu; "
 					"got %llu bytes, expected %llu",
 					(unsigned long) strip,
-					(unsigned long long) NoSanitizeSubUInt64(tif->tif_size, TIFFGetStrileOffset(tif, strip)),
+					(unsigned long long) tif->tif_size - td->td_stripoffset[strip],
 					(unsigned long long) bytecount);
 #endif
 				tif->tif_curstrip = NOSTRIP;
@@ -878,7 +886,7 @@ TIFFFillStrip(TIFF* tif, uint32 strip)
 			}
 			tif->tif_flags &= ~TIFF_MYBUFFER;
 			tif->tif_rawdatasize = (tmsize_t)bytecount;
-			tif->tif_rawdata = tif->tif_base + (tmsize_t)TIFFGetStrileOffset(tif, strip);
+			tif->tif_rawdata = tif->tif_base + (tmsize_t)td->td_stripoffset[strip];
                        tif->tif_rawdataoff = 0;
                        tif->tif_rawdataloaded = (tmsize_t) bytecount;

@@ -1093,11 +1101,16 @@ _TIFFReadEncodedTileAndAllocBuffer(TIFF* tif, uint32 tile,
 static tmsize_t
 TIFFReadRawTile1(TIFF* tif, uint32 tile, void* buf, tmsize_t size, const char* module)
 {
+	TIFFDirectory *td = &tif->tif_dir;
+
+    if (!_TIFFFillStriles( tif ))
+        return ((tmsize_t)(-1));
+
 	assert((tif->tif_flags&TIFF_NOREADRAW)==0);
 	if (!isMapped(tif)) {
 		tmsize_t cc;

-		if (!SeekOK(tif, TIFFGetStrileOffset(tif, tile))) {
+		if (!SeekOK(tif, td->td_stripoffset[tile])) {
 			TIFFErrorExt(tif->tif_clientdata, module,
 			    "Seek error at row %lu, col %lu, tile %lu",
 			    (unsigned long) tif->tif_row,
@@ -1127,9 +1140,9 @@ TIFFReadRawTile1(TIFF* tif, uint32 tile, void* buf, tmsize_t size, const char* m
 	} else {
 		tmsize_t ma,mb;
 		tmsize_t n;
-		ma=(tmsize_t)TIFFGetStrileOffset(tif, tile);
+		ma=(tmsize_t)td->td_stripoffset[tile];
 		mb=ma+size;
-		if ((TIFFGetStrileOffset(tif, tile) > (uint64)TIFF_TMSIZE_T_MAX)||(ma>tif->tif_size))
+		if ((td->td_stripoffset[tile] > (uint64)TIFF_TMSIZE_T_MAX)||(ma>tif->tif_size))
 			n=0;
 		else if ((mb<ma)||(mb<size)||(mb>tif->tif_size))
 			n=tif->tif_size-ma;
@@ -1185,12 +1198,13 @@ TIFFReadRawTile(TIFF* tif, uint32 tile, void* buf, tmsize_t size)
 		"Compression scheme does not support access to raw uncompressed data");
 		return ((tmsize_t)(-1));
 	}
-	bytecount64 = TIFFGetStrileByteCount(tif, tile);
-	if (size != (tmsize_t)(-1) && (uint64)size <= bytecount64)
-		bytecountm = size;
-	else
-		bytecountm = _TIFFCastUInt64ToSSize(tif, bytecount64, module);
-	if( bytecountm == 0 ) {
+	bytecount64 = td->td_stripbytecount[tile];
+	if (size != (tmsize_t)(-1) && (uint64)size < bytecount64)
+		bytecount64 = (uint64)size;
+	bytecountm = (tmsize_t)bytecount64;
+	if ((uint64)bytecountm!=bytecount64)
+	{
+		TIFFErrorExt(tif->tif_clientdata,module,"Integer overflow");
 		return ((tmsize_t)(-1));
 	}
 	return (TIFFReadRawTile1(tif, tile, buf, bytecountm, module));
@@ -1206,10 +1220,13 @@ TIFFFillTile(TIFF* tif, uint32 tile)
 	static const char module[] = "TIFFFillTile";
 	TIFFDirectory *td = &tif->tif_dir;

+        if (!_TIFFFillStriles( tif ) || !tif->tif_dir.td_stripbytecount)
+            return 0;
+
 	if ((tif->tif_flags&TIFF_NOREADRAW)==0)
 	{
-		uint64 bytecount = TIFFGetStrileByteCount(tif, tile);
-		if( bytecount == 0 || bytecount > (uint64)TIFF_INT64_MAX ) {
+		uint64 bytecount = td->td_stripbytecount[tile];
+		if ((int64)bytecount <= 0) {
 #if defined(__WIN32__) && (defined(_MSC_VER) || defined(__MINGW32__))
 			TIFFErrorExt(tif->tif_clientdata, module,
 				"%I64u: Invalid tile byte count, tile %lu",
@@ -1236,7 +1253,7 @@ TIFFFillTile(TIFF* tif, uint32 tile)
 			    (bytecount - 4096) / 10 > (uint64)stripsize  )
 			{
 				uint64 newbytecount = (uint64)stripsize * 10 + 4096;
-				if( newbytecount == 0 || newbytecount > (uint64)TIFF_INT64_MAX )
+				if( (int64)newbytecount >= 0 )
 				{
 #if defined(__WIN32__) && (defined(_MSC_VER) || defined(__MINGW32__))
 					TIFFWarningExt(tif->tif_clientdata, module,
@@ -1261,13 +1278,13 @@ TIFFFillTile(TIFF* tif, uint32 tile)
 			 * We must check for overflow, potentially causing
 			 * an OOB read. Instead of simple
 			 *
-			 *  TIFFGetStrileOffset(tif, tile)+bytecount > tif->tif_size
+			 *  td->td_stripoffset[tile]+bytecount > tif->tif_size
 			 *
 			 * comparison (which can overflow) we do the following
 			 * two comparisons:
 			 */
 			if (bytecount > (uint64)tif->tif_size ||
-			    TIFFGetStrileOffset(tif, tile) > (uint64)tif->tif_size - bytecount) {
+			    td->td_stripoffset[tile] > (uint64)tif->tif_size - bytecount) {
 				tif->tif_curtile = NOTILE;
 				return (0);
 			}
@@ -1296,7 +1313,7 @@ TIFFFillTile(TIFF* tif, uint32 tile)

 			tif->tif_rawdatasize = (tmsize_t)bytecount;
 			tif->tif_rawdata =
-				tif->tif_base + (tmsize_t)TIFFGetStrileOffset(tif, tile);
+				tif->tif_base + (tmsize_t)td->td_stripoffset[tile];
                        tif->tif_rawdataoff = 0;
                        tif->tif_rawdataloaded = (tmsize_t) bytecount;
 			tif->tif_flags |= TIFF_BUFFERMMAP;
@@ -1423,6 +1440,9 @@ TIFFStartStrip(TIFF* tif, uint32 strip)
 {
 	TIFFDirectory *td = &tif->tif_dir;

+        if (!_TIFFFillStriles( tif ) || !tif->tif_dir.td_stripbytecount)
+            return 0;
+
 	if ((tif->tif_flags & TIFF_CODERSETUP) == 0) {
 		if (!(*tif->tif_setupdecode)(tif))
 			return (0);
@@ -1443,18 +1463,10 @@ TIFFStartStrip(TIFF* tif, uint32 strip)
 		if( tif->tif_rawdataloaded > 0 )
 			tif->tif_rawcc = tif->tif_rawdataloaded;
 		else
-			tif->tif_rawcc = (tmsize_t)TIFFGetStrileByteCount(tif, strip);
+			tif->tif_rawcc = (tmsize_t)td->td_stripbytecount[strip];
 	}
-	if ((*tif->tif_predecode)(tif,
-			(uint16)(strip / td->td_stripsperimage)) == 0 ) {
-            /* Needed for example for scanline access, if tif_predecode */
-            /* fails, and we try to read the same strip again. Without invalidating */
-            /* tif_curstrip, we'd call tif_decoderow() on a possibly invalid */
-            /* codec state. */
-            tif->tif_curstrip = NOSTRIP;
-            return 0;
-        }
-        return 1;
+	return ((*tif->tif_predecode)(tif,
+			(uint16)(strip / td->td_stripsperimage)));
 }

 /*
@@ -1468,6 +1480,9 @@ TIFFStartTile(TIFF* tif, uint32 tile)
 	TIFFDirectory *td = &tif->tif_dir;
        uint32 howmany32;

+        if (!_TIFFFillStriles( tif ) || !tif->tif_dir.td_stripbytecount)
+                return 0;
+
 	if ((tif->tif_flags & TIFF_CODERSETUP) == 0) {
 		if (!(*tif->tif_setupdecode)(tif))
 			return (0);
@@ -1498,7 +1513,7 @@ TIFFStartTile(TIFF* tif, uint32 tile)
 		if( tif->tif_rawdataloaded > 0 )
 			tif->tif_rawcc = tif->tif_rawdataloaded;
 		else
-			tif->tif_rawcc = (tmsize_t)TIFFGetStrileByteCount(tif, tile);
+			tif->tif_rawcc = (tmsize_t)td->td_stripbytecount[tile];
 	}
 	return ((*tif->tif_predecode)(tif,
 			(uint16)(tile/td->td_stripsperimage)));
@@ -1513,100 +1528,13 @@ TIFFCheckRead(TIFF* tif, int tiles)
 	}
 	if (tiles ^ isTiled(tif)) {
 		TIFFErrorExt(tif->tif_clientdata, tif->tif_name, tiles ?
-		    "Can not read tiles from a striped image" :
+		    "Can not read tiles from a stripped image" :
 		    "Can not read scanlines from a tiled image");
 		return (0);
 	}
 	return (1);
 }

-/* Use the provided input buffer (inbuf, insize) and decompress it into
- * (outbuf, outsize).
- * This function replaces the use of TIFFReadEncodedStrip()/TIFFReadEncodedTile()
- * when the user can provide the buffer for the input data, for example when
- * he wants to avoid libtiff to read the strile offset/count values from the
- * [Strip|Tile][Offsets/ByteCounts] array.
- * inbuf content must be writable (if bit reversal is needed)
- * Returns 1 in case of success, 0 otherwise.
- */
-int      TIFFReadFromUserBuffer(TIFF* tif, uint32 strile,
-                                void* inbuf, tmsize_t insize,
-                                void* outbuf, tmsize_t outsize)
-{
-    static const char module[] = "TIFFReadFromUserBuffer";
-    TIFFDirectory *td = &tif->tif_dir;
-    int ret = 1;
-    uint32 old_tif_flags = tif->tif_flags;
-    tmsize_t old_rawdatasize = tif->tif_rawdatasize;
-    void* old_rawdata = tif->tif_rawdata;
-
-    if (tif->tif_mode == O_WRONLY) {
-        TIFFErrorExt(tif->tif_clientdata, tif->tif_name, "File not open for reading");
-        return 0;
-    }
-    if (tif->tif_flags&TIFF_NOREADRAW)
-    {
-        TIFFErrorExt(tif->tif_clientdata, module,
-                "Compression scheme does not support access to raw uncompressed data");
-        return 0;
-    }
-
-    tif->tif_flags &= ~TIFF_MYBUFFER;
-    tif->tif_flags |= TIFF_BUFFERMMAP;
-    tif->tif_rawdatasize = insize;
-    tif->tif_rawdata = inbuf;
-    tif->tif_rawdataoff = 0;
-    tif->tif_rawdataloaded = insize;
-
-    if (!isFillOrder(tif, td->td_fillorder) &&
-        (tif->tif_flags & TIFF_NOBITREV) == 0)
-    {
-        TIFFReverseBits(inbuf, insize);
-    }
-
-    if( TIFFIsTiled(tif) )
-    {
-        if( !TIFFStartTile(tif, strile) ||
-            !(*tif->tif_decodetile)(tif, (uint8*) outbuf, outsize, 
-                                    (uint16)(strile/td->td_stripsperimage)) )
-        {
-            ret = 0;
-        }
-    }
-    else
-    {
-        uint32 rowsperstrip=td->td_rowsperstrip;
-        uint32 stripsperplane;
-        if (rowsperstrip>td->td_imagelength)
-            rowsperstrip=td->td_imagelength;
-        stripsperplane= TIFFhowmany_32_maxuint_compat(td->td_imagelength, rowsperstrip);
-        if( !TIFFStartStrip(tif, strile) ||
-            !(*tif->tif_decodestrip)(tif, (uint8*) outbuf, outsize, 
-                                     (uint16)(strile/stripsperplane)) )
-        {
-            ret = 0;
-        }
-    }
-    if( ret )
-    {
-        (*tif->tif_postdecode)(tif, (uint8*) outbuf, outsize);
-    }
-
-    if (!isFillOrder(tif, td->td_fillorder) &&
-        (tif->tif_flags & TIFF_NOBITREV) == 0)
-    {
-        TIFFReverseBits(inbuf, insize);
-    }
-
-    tif->tif_flags = old_tif_flags;
-    tif->tif_rawdatasize = old_rawdatasize;
-    tif->tif_rawdata = old_rawdata;
-    tif->tif_rawdataoff = 0;
-    tif->tif_rawdataloaded = 0;
-
-    return ret;
-}
-
 void
 _TIFFNoPostDecode(TIFF* tif, uint8* buf, tmsize_t cc)
 {
@@ -129,8 +129,15 @@ TIFFVStripSize(TIFF* tif, uint32 nrows)
 {
 	static const char module[] = "TIFFVStripSize";
 	uint64 m;
+	tmsize_t n;
 	m=TIFFVStripSize64(tif,nrows);
-        return _TIFFCastUInt64ToSSize(tif, m, module);
+	n=(tmsize_t)m;
+	if ((uint64)n!=m)
+	{
+		TIFFErrorExt(tif->tif_clientdata,module,"Integer overflow");
+		n=0;
+	}
+	return(n);
 }

 /*
@@ -140,7 +147,8 @@ uint64
 TIFFRawStripSize64(TIFF* tif, uint32 strip)
 {
 	static const char module[] = "TIFFRawStripSize64";
-	uint64 bytecount = TIFFGetStrileByteCount(tif, strip);
+	TIFFDirectory* td = &tif->tif_dir;
+	uint64 bytecount = td->td_stripbytecount[strip];

 	if (bytecount == 0)
 	{
@@ -203,8 +211,15 @@ TIFFStripSize(TIFF* tif)
 {
 	static const char module[] = "TIFFStripSize";
 	uint64 m;
+	tmsize_t n;
 	m=TIFFStripSize64(tif);
-	return _TIFFCastUInt64ToSSize(tif, m, module);
+	n=(tmsize_t)m;
+	if ((uint64)n!=m)
+	{
+		TIFFErrorExt(tif->tif_clientdata,module,"Integer overflow");
+		n=0;
+	}
+	return(n);
 }

 /*
@@ -315,8 +330,14 @@ TIFFScanlineSize(TIFF* tif)
 {
 	static const char module[] = "TIFFScanlineSize";
 	uint64 m;
+	tmsize_t n;
 	m=TIFFScanlineSize64(tif);
-	return _TIFFCastUInt64ToSSize(tif, m, module);
+	n=(tmsize_t)m;
+	if ((uint64)n!=m) {
+		TIFFErrorExt(tif->tif_clientdata,module,"Integer arithmetic overflow");
+		n=0;
+	}
+	return(n);
 }

 /*
@@ -345,8 +366,15 @@ TIFFRasterScanlineSize(TIFF* tif)
 {
 	static const char module[] = "TIFFRasterScanlineSize";
 	uint64 m;
+	tmsize_t n;
 	m=TIFFRasterScanlineSize64(tif);
-	return _TIFFCastUInt64ToSSize(tif, m, module);
+	n=(tmsize_t)m;
+	if ((uint64)n!=m)
+	{
+		TIFFErrorExt(tif->tif_clientdata,module,"Integer arithmetic overflow");
+		n=0;
+	}
+	return(n);
 }

 /* vim: set ts=8 sts=8 sw=8 noet: */
@@ -122,17 +122,17 @@ ThunderDecode(TIFF* tif, uint8* op, tmsize_t maxpixels)
 			break;
 		case THUNDER_2BITDELTAS:	/* 2-bit deltas */
 			if ((delta = ((n >> 4) & 3)) != DELTA2_SKIP)
-				SETPIXEL(op, (unsigned)((int)lastpixel + twobitdeltas[delta]));
+				SETPIXEL(op, lastpixel + twobitdeltas[delta]);
 			if ((delta = ((n >> 2) & 3)) != DELTA2_SKIP)
-				SETPIXEL(op, (unsigned)((int)lastpixel + twobitdeltas[delta]));
+				SETPIXEL(op, lastpixel + twobitdeltas[delta]);
 			if ((delta = (n & 3)) != DELTA2_SKIP)
-				SETPIXEL(op, (unsigned)((int)lastpixel + twobitdeltas[delta]));
+				SETPIXEL(op, lastpixel + twobitdeltas[delta]);
 			break;
 		case THUNDER_3BITDELTAS:	/* 3-bit deltas */
 			if ((delta = ((n >> 3) & 7)) != DELTA3_SKIP)
-				SETPIXEL(op, (unsigned)((int)lastpixel + threebitdeltas[delta]));
+				SETPIXEL(op, lastpixel + threebitdeltas[delta]);
 			if ((delta = (n & 7)) != DELTA3_SKIP)
-				SETPIXEL(op, (unsigned)((int)lastpixel + threebitdeltas[delta]));
+				SETPIXEL(op, lastpixel + threebitdeltas[delta]);
 			break;
 		case THUNDER_RAW:		/* raw data */
 			SETPIXEL(op, n);
@@ -181,8 +181,15 @@ TIFFTileRowSize(TIFF* tif)
 {
 	static const char module[] = "TIFFTileRowSize";
 	uint64 m;
+	tmsize_t n;
 	m=TIFFTileRowSize64(tif);
-	return _TIFFCastUInt64ToSSize(tif, m, module);
+	n=(tmsize_t)m;
+	if ((uint64)n!=m)
+	{
+		TIFFErrorExt(tif->tif_clientdata,module,"Integer overflow");
+		n=0;
+	}
+	return(n);
 }

 /*
@@ -241,8 +248,15 @@ TIFFVTileSize(TIFF* tif, uint32 nrows)
 {
 	static const char module[] = "TIFFVTileSize";
 	uint64 m;
+	tmsize_t n;
 	m=TIFFVTileSize64(tif,nrows);
-	return _TIFFCastUInt64ToSSize(tif, m, module);
+	n=(tmsize_t)m;
+	if ((uint64)n!=m)
+	{
+		TIFFErrorExt(tif->tif_clientdata,module,"Integer overflow");
+		n=0;
+	}
+	return(n);
 }

 /*
@@ -258,8 +272,15 @@ TIFFTileSize(TIFF* tif)
 {
 	static const char module[] = "TIFFTileSize";
 	uint64 m;
+	tmsize_t n;
 	m=TIFFTileSize64(tif);
-	return _TIFFCastUInt64ToSSize(tif, m, module);
+	n=(tmsize_t)m;
+	if ((uint64)n!=m)
+	{
+		TIFFErrorExt(tif->tif_clientdata,module,"Integer overflow");
+		n=0;
+	}
+	return(n);
 }

 /*
@@ -162,7 +162,7 @@ _tiffMapProc(thandle_t fd, void** pbase, toff_t* psize)
 {
 	uint64 size64 = _tiffSizeProc(fd);
 	tmsize_t sizem = (tmsize_t)size64;
-	if (size64 && (uint64)sizem==size64) {
+	if ((uint64)sizem==size64) {
 		fd_as_handle_union_t fdh;
 		fdh.h = fd;
 		*pbase = (void*)
@@ -267,12 +267,6 @@ TWebPPreDecode(TIFF* tif, uint16 s)
      segment_height = td->td_rowsperstrip;
  }

-  if( segment_width > 16383 || segment_height > 16383 ) {
-      TIFFErrorExt(tif->tif_clientdata, module,
-                   "WEBP maximum image dimensions are 16383 x 16383.");
-      return 0;
-  }
-
  if( (sp->state & LSTATE_INIT_DECODE) == 0 )
      tif->tif_setupdecode(tif);
      
@@ -339,7 +333,7 @@ TWebPSetupEncode(TIFF* tif)
  }
  
  /* check bits per sample and data type */
-  if ((nBitsPerSample != 8) || (sampleFormat != SAMPLEFORMAT_UINT)) {
+  if ((nBitsPerSample != 8) && (sampleFormat != 1)) {
    TIFFErrorExt(tif->tif_clientdata, module,
                "WEBP driver requires 8 bit unsigned data");
    return 0;
@@ -362,7 +356,7 @@ TWebPSetupEncode(TIFF* tif)
  }

  if (!WebPConfigInitInternal(&sp->sEncoderConfig, WEBP_PRESET_DEFAULT,
-                              (float)sp->quality_level,
+                              sp->quality_level,
                              WEBP_ENCODER_ABI_VERSION)) {
    TIFFErrorExt(tif->tif_clientdata, module,
      "Error creating WebP encoder configuration.");
@@ -585,7 +579,7 @@ TWebPVSetField(TIFF* tif, uint32 tag, va_list ap)
    #if WEBP_ENCODER_ABI_VERSION >= 0x0100
    sp->lossless = va_arg(ap, int);
    if (sp->lossless){
-      sp->quality_level = 100;
+      sp->quality_level = 100.0f;      
    }
    return 1;
    #else
@@ -634,7 +628,6 @@ TIFFInitWebP(TIFF* tif, int scheme)
  static const char module[] = "TIFFInitWebP";
  WebPState* sp;

-  (void)scheme;
  assert( scheme == COMPRESSION_WEBP );

  /*
@@ -663,7 +656,7 @@ TIFFInitWebP(TIFF* tif, int scheme)
  tif->tif_tagmethods.vsetfield = TWebPVSetField;	/* hook for codec tags */

  /* Default values for codec-specific fields */
-  sp->quality_level = 75;		/* default comp. level */
+  sp->quality_level = 75.0f;		/* default comp. level */
  sp->lossless = 0; /* default to false */
  sp->state = 0;
  sp->nSamples = 0;
@@ -27,38 +27,34 @@
 * Scott Wagner (wagner@itek.com), Itek Graphix, Rochester, NY USA
 */

+/*
+  CreateFileA/CreateFileW return type 'HANDLE'.
+
+  thandle_t is declared like
+
+    DECLARE_HANDLE(thandle_t);
+
+  in tiffio.h.
+
+  Windows (from winnt.h) DECLARE_HANDLE logic looks like
+
+  #ifdef STRICT
+    typedef void *HANDLE;
+  #define DECLARE_HANDLE(name) struct name##__ { int unused; }; typedef struct name##__ *name
+  #else
+    typedef PVOID HANDLE;
+  #define DECLARE_HANDLE(name) typedef HANDLE name
+  #endif
+
+  See http://bugzilla.maptools.org/show_bug.cgi?id=1941 for problems in WIN64
+  builds resulting from this.  Unfortunately, the proposed patch was lost.
+
+*/
+  
 #include "tiffiop.h"

 #include <windows.h>

-/*
-  CreateFileA/CreateFileW return type 'HANDLE' while TIFFFdOpen() takes 'int',
-  which is formally incompatible and can even seemingly be of different size:
-  HANDLE is 64 bit under Win64, while int is still 32 bits there.
-
-  However, only the lower 32 bits of a HANDLE are significant under Win64 as,
-  for interoperability reasons, they must have the same values in 32- and
-  64-bit programs running on the same system, see
-
-  https://docs.microsoft.com/en-us/windows/win32/winprog64/interprocess-communication
-
-  Because of this, it is safe to define the following trivial functions for
-  casting between ints and HANDLEs, which are only really needed to avoid
-  compiler warnings (and, perhaps, to make the code slightly more clear).
-  Note that using the intermediate cast to "intptr_t" is crucial for warning
-  avoidance, as this integer type has the same size as HANDLE in all builds.
-*/
-
-static inline thandle_t thandle_from_int(int ifd)
-{
-    return (thandle_t)(intptr_t)ifd;
-}
-
-static inline int thandle_to_int(thandle_t fd)
-{
-    return (int)(intptr_t)fd;
-}
-
 static tmsize_t
 _tiffReadProc(thandle_t fd, void* buf, tmsize_t size)
 {
@@ -155,11 +151,9 @@ _tiffCloseProc(thandle_t fd)
 static uint64
 _tiffSizeProc(thandle_t fd)
 {
-	LARGE_INTEGER m;
-	if (GetFileSizeEx(fd,&m))
-		return(m.QuadPart);
-	else
-		return(0);
+	ULARGE_INTEGER m;
+	m.LowPart=GetFileSize(fd,&m.HighPart);
+	return(m.QuadPart);
 }

 static int
@@ -191,7 +185,7 @@ _tiffMapProc(thandle_t fd, void** pbase, toff_t* psize)

 	size = _tiffSizeProc(fd);
 	sizem = (tmsize_t)size;
-	if (!size || (uint64)sizem!=size)
+	if ((uint64)sizem!=size)
 		return (0);

 	/* By passing in 0 for the maximum file size, it specifies that we
@@ -243,7 +237,7 @@ TIFFFdOpen(int ifd, const char* name, const char* mode)
 			break;
 		}
 	}
-	tif = TIFFClientOpen(name, mode, thandle_from_int(ifd),
+	tif = TIFFClientOpen(name, mode, (thandle_t)ifd, /* FIXME: WIN64 cast to pointer warning */
 			_tiffReadProc, _tiffWriteProc,
 			_tiffSeekProc, _tiffCloseProc, _tiffSizeProc,
 			fSuppressMap ? _tiffDummyMapProc : _tiffMapProc,
@@ -288,7 +282,7 @@ TIFFOpen(const char* name, const char* mode)
 		return ((TIFF *)0);
 	}

-	tif = TIFFFdOpen(thandle_to_int(fd), name, mode);
+	tif = TIFFFdOpen((int)fd, name, mode);   /* FIXME: WIN64 cast from pointer to int warning */
 	if(!tif)
 		CloseHandle(fd);
 	return tif;
@@ -343,7 +337,7 @@ TIFFOpenW(const wchar_t* name, const char* mode)
 				    NULL, NULL);
 	}

-	tif = TIFFFdOpen(thandle_to_int(fd),
+	tif = TIFFFdOpen((int)fd,    /* FIXME: WIN64 cast from pointer to int warning */
 			 (mbname != NULL) ? mbname : "<unknown>", mode);
 	if(!tif)
 		CloseHandle(fd);
@@ -128,10 +128,10 @@ TIFFWriteScanline(TIFF* tif, void* buf, uint32 row, uint16 sample)
 		tif->tif_rawcc = 0;
 		tif->tif_rawcp = tif->tif_rawdata;

-		if( td->td_stripbytecount_p[strip] > 0 )
+		if( td->td_stripbytecount[strip] > 0 )
 		{
 			/* if we are writing over existing tiles, zero length */
-			td->td_stripbytecount_p[strip] = 0;
+			td->td_stripbytecount[strip] = 0;

 			/* this forces TIFFAppendToStrip() to do a seek */
 			tif->tif_curoff = 0;
@@ -176,32 +176,6 @@ TIFFWriteScanline(TIFF* tif, void* buf, uint32 row, uint16 sample)
 	return (status);
 }

-/* Make sure that at the first attempt of rewriting a tile/strip, we will have */
-/* more bytes available in the output buffer than the previous byte count, */
-/* so that TIFFAppendToStrip() will detect the overflow when it is called the first */
-/* time if the new compressed tile is bigger than the older one. (GDAL #4771) */
-static int _TIFFReserveLargeEnoughWriteBuffer(TIFF* tif, uint32 strip_or_tile)
-{
-    TIFFDirectory *td = &tif->tif_dir;
-    if( td->td_stripbytecount_p[strip_or_tile] > 0 )
-    {
-        /* The +1 is to ensure at least one extra bytes */
-        /* The +4 is because the LZW encoder flushes 4 bytes before the limit */
-        uint64 safe_buffer_size = (uint64)(td->td_stripbytecount_p[strip_or_tile] + 1 + 4);
-        if( tif->tif_rawdatasize <= (tmsize_t)safe_buffer_size )
-        {
-            if( !(TIFFWriteBufferSetup(tif, NULL,
-                (tmsize_t)TIFFroundup_64(safe_buffer_size, 1024))) )
-                return 0;
-        }
-
-        /* Force TIFFAppendToStrip() to consider placing data at end
-            of file. */
-        tif->tif_curoff = 0;
-    }
-    return 1;
-}
-
 /*
 * Encode the supplied data and write it to the
 * specified strip.
@@ -248,13 +222,6 @@ TIFFWriteEncodedStrip(TIFF* tif, uint32 strip, void* data, tmsize_t cc)
        tif->tif_flags |= TIFF_BUF4WRITE;
 	tif->tif_curstrip = strip;

-	if( !_TIFFReserveLargeEnoughWriteBuffer(tif, strip) ) {
-            return ((tmsize_t)(-1));
-        }
-
-        tif->tif_rawcc = 0;
-        tif->tif_rawcp = tif->tif_rawdata;
-
        if (td->td_stripsperimage == 0) {
                TIFFErrorExt(tif->tif_clientdata, module, "Zero strips per image");
                return ((tmsize_t) -1);
@@ -267,6 +234,27 @@ TIFFWriteEncodedStrip(TIFF* tif, uint32 strip, void* data, tmsize_t cc)
 		tif->tif_flags |= TIFF_CODERSETUP;
 	}

+	if( td->td_stripbytecount[strip] > 0 )
+        {
+            /* Make sure that at the first attempt of rewriting the tile, we will have */
+            /* more bytes available in the output buffer than the previous byte count, */
+            /* so that TIFFAppendToStrip() will detect the overflow when it is called the first */
+            /* time if the new compressed tile is bigger than the older one. (GDAL #4771) */
+            if( tif->tif_rawdatasize <= (tmsize_t)td->td_stripbytecount[strip] )
+            {
+                if( !(TIFFWriteBufferSetup(tif, NULL,
+                    (tmsize_t)TIFFroundup_64((uint64)(td->td_stripbytecount[strip] + 1), 1024))) )
+                    return ((tmsize_t)(-1));
+            }
+
+	    /* Force TIFFAppendToStrip() to consider placing data at end
+               of file. */
+            tif->tif_curoff = 0;
+        }
+
+    tif->tif_rawcc = 0;
+    tif->tif_rawcp = tif->tif_rawdata;
+
 	tif->tif_flags &= ~TIFF_POSTENCODE;

    /* shortcut to avoid an extra memcpy() */
@@ -414,8 +402,22 @@ TIFFWriteEncodedTile(TIFF* tif, uint32 tile, void* data, tmsize_t cc)
        tif->tif_flags |= TIFF_BUF4WRITE;
 	tif->tif_curtile = tile;

-        if( !_TIFFReserveLargeEnoughWriteBuffer(tif, tile) ) {
-            return ((tmsize_t)(-1));
+	if( td->td_stripbytecount[tile] > 0 )
+        {
+            /* Make sure that at the first attempt of rewriting the tile, we will have */
+            /* more bytes available in the output buffer than the previous byte count, */
+            /* so that TIFFAppendToStrip() will detect the overflow when it is called the first */
+            /* time if the new compressed tile is bigger than the older one. (GDAL #4771) */
+            if( tif->tif_rawdatasize <= (tmsize_t) td->td_stripbytecount[tile] )
+            {
+                if( !(TIFFWriteBufferSetup(tif, NULL,
+                    (tmsize_t)TIFFroundup_64((uint64)(td->td_stripbytecount[tile] + 1), 1024))) )
+                    return ((tmsize_t)(-1));
+            }
+
+	    /* Force TIFFAppendToStrip() to consider placing data at end
+               of file. */
+            tif->tif_curoff = 0;
        }

 	tif->tif_rawcc = 0;
@@ -533,29 +535,22 @@ TIFFSetupStrips(TIFF* tif)
 		    isUnspecified(tif, FIELD_ROWSPERSTRIP) ?
 			td->td_samplesperpixel : TIFFNumberOfStrips(tif);
 	td->td_nstrips = td->td_stripsperimage;
-        /* TIFFWriteDirectoryTagData has a limitation to 0x80000000U bytes */
-        if( td->td_nstrips >= 0x80000000U / ((tif->tif_flags&TIFF_BIGTIFF)?0x8U:0x4U) )
-        {
-            TIFFErrorExt(tif->tif_clientdata, "TIFFSetupStrips",
-                         "Too large Strip/Tile Offsets/ByteCounts arrays");
-            return 0;
-        }
 	if (td->td_planarconfig == PLANARCONFIG_SEPARATE)
 		td->td_stripsperimage /= td->td_samplesperpixel;
-	td->td_stripoffset_p = (uint64 *)
+	td->td_stripoffset = (uint64 *)
            _TIFFCheckMalloc(tif, td->td_nstrips, sizeof (uint64),
                             "for \"StripOffsets\" array");
-	td->td_stripbytecount_p = (uint64 *)
+	td->td_stripbytecount = (uint64 *)
            _TIFFCheckMalloc(tif, td->td_nstrips, sizeof (uint64),
                             "for \"StripByteCounts\" array");
-	if (td->td_stripoffset_p == NULL || td->td_stripbytecount_p == NULL)
+	if (td->td_stripoffset == NULL || td->td_stripbytecount == NULL)
 		return (0);
 	/*
 	 * Place data at the end-of-file
 	 * (by setting offsets to zero).
 	 */
-	_TIFFmemset(td->td_stripoffset_p, 0, td->td_nstrips*sizeof (uint64));
-	_TIFFmemset(td->td_stripbytecount_p, 0, td->td_nstrips*sizeof (uint64));
+	_TIFFmemset(td->td_stripoffset, 0, td->td_nstrips*sizeof (uint64));
+	_TIFFmemset(td->td_stripbytecount, 0, td->td_nstrips*sizeof (uint64));
 	TIFFSetFieldBit(tif, FIELD_STRIPOFFSETS);
 	TIFFSetFieldBit(tif, FIELD_STRIPBYTECOUNTS);
 	return (1);
@@ -577,7 +572,7 @@ TIFFWriteCheck(TIFF* tif, int tiles, const char* module)
 	}
 	if (tiles ^ isTiled(tif)) {
 		TIFFErrorExt(tif->tif_clientdata, module, tiles ?
-		    "Can not write tiles to a striped image" :
+		    "Can not write tiles to a stripped image" :
 		    "Can not write scanlines to a tiled image");
 		return (0);
 	}
@@ -615,7 +610,7 @@ TIFFWriteCheck(TIFF* tif, int tiles, const char* module)
 			return (0);
 		}
 	}
-	if (tif->tif_dir.td_stripoffset_p == NULL && !TIFFSetupStrips(tif)) {
+	if (tif->tif_dir.td_stripoffset == NULL && !TIFFSetupStrips(tif)) {
 		tif->tif_dir.td_nstrips = 0;
 		TIFFErrorExt(tif->tif_clientdata, module, "No space for %s arrays",
 		    isTiled(tif) ? "tile" : "strip");
@@ -633,20 +628,6 @@ TIFFWriteCheck(TIFF* tif, int tiles, const char* module)
 	if (tif->tif_scanlinesize == 0)
 		return (0);
 	tif->tif_flags |= TIFF_BEENWRITING;
-
-        if( tif->tif_dir.td_stripoffset_entry.tdir_tag != 0 &&
-            tif->tif_dir.td_stripoffset_entry.tdir_count == 0 &&
-            tif->tif_dir.td_stripoffset_entry.tdir_type == 0 &&
-            tif->tif_dir.td_stripoffset_entry.tdir_offset.toff_long8 == 0 &&
-            tif->tif_dir.td_stripbytecount_entry.tdir_tag != 0 &&
-            tif->tif_dir.td_stripbytecount_entry.tdir_count == 0 &&
-            tif->tif_dir.td_stripbytecount_entry.tdir_type == 0 &&
-            tif->tif_dir.td_stripbytecount_entry.tdir_offset.toff_long8 == 0 &&
-            !(tif->tif_flags & TIFF_DIRTYDIRECT)  )
-        {
-            TIFFForceStrileArrayWriting(tif);
-        }
-
 	return (1);
 }

@@ -668,10 +649,6 @@ TIFFWriteBufferSetup(TIFF* tif, void* bp, tmsize_t size)
 	if (size == (tmsize_t)(-1)) {
 		size = (isTiled(tif) ?
 		    tif->tif_tilesize : TIFFStripSize(tif));
-
-                /* Adds 10% margin for cases where compression would expand a bit */
-                if( size < TIFF_TMSIZE_T_MAX - size / 10 )
-                    size += size / 10;
 		/*
 		 * Make raw data buffer at least 8K
 		 */
@@ -707,9 +684,9 @@ TIFFGrowStrips(TIFF* tif, uint32 delta, const char* module)
 	uint64* new_stripbytecount;

 	assert(td->td_planarconfig == PLANARCONFIG_CONTIG);
-	new_stripoffset = (uint64*)_TIFFrealloc(td->td_stripoffset_p,
+	new_stripoffset = (uint64*)_TIFFrealloc(td->td_stripoffset,
 		(td->td_nstrips + delta) * sizeof (uint64));
-	new_stripbytecount = (uint64*)_TIFFrealloc(td->td_stripbytecount_p,
+	new_stripbytecount = (uint64*)_TIFFrealloc(td->td_stripbytecount,
 		(td->td_nstrips + delta) * sizeof (uint64));
 	if (new_stripoffset == NULL || new_stripbytecount == NULL) {
 		if (new_stripoffset)
@@ -720,11 +697,11 @@ TIFFGrowStrips(TIFF* tif, uint32 delta, const char* module)
 		TIFFErrorExt(tif->tif_clientdata, module, "No space to expand strip arrays");
 		return (0);
 	}
-	td->td_stripoffset_p = new_stripoffset;
-	td->td_stripbytecount_p = new_stripbytecount;
-	_TIFFmemset(td->td_stripoffset_p + td->td_nstrips,
+	td->td_stripoffset = new_stripoffset;
+	td->td_stripbytecount = new_stripbytecount;
+	_TIFFmemset(td->td_stripoffset + td->td_nstrips,
 		    0, delta*sizeof (uint64));
-	_TIFFmemset(td->td_stripbytecount_p + td->td_nstrips,
+	_TIFFmemset(td->td_stripbytecount + td->td_nstrips,
 		    0, delta*sizeof (uint64));
 	td->td_nstrips += delta;
        tif->tif_flags |= TIFF_DIRTYDIRECT;
@@ -743,12 +720,12 @@ TIFFAppendToStrip(TIFF* tif, uint32 strip, uint8* data, tmsize_t cc)
 	uint64 m;
        int64 old_byte_count = -1;

-	if (td->td_stripoffset_p[strip] == 0 || tif->tif_curoff == 0) {
+	if (td->td_stripoffset[strip] == 0 || tif->tif_curoff == 0) {
            assert(td->td_nstrips > 0);

-            if( td->td_stripbytecount_p[strip] != 0 
-                && td->td_stripoffset_p[strip] != 0 
-                && td->td_stripbytecount_p[strip] >= (uint64) cc )
+            if( td->td_stripbytecount[strip] != 0 
+                && td->td_stripoffset[strip] != 0 
+                && td->td_stripbytecount[strip] >= (uint64) cc )
            {
                /* 
                 * There is already tile data on disk, and the new tile
@@ -757,7 +734,7 @@ TIFFAppendToStrip(TIFF* tif, uint32 strip, uint8* data, tmsize_t cc)
                 * more data to append to this strip before we are done
                 * depending on how we are getting called.
                 */
-                if (!SeekOK(tif, td->td_stripoffset_p[strip])) {
+                if (!SeekOK(tif, td->td_stripoffset[strip])) {
                    TIFFErrorExt(tif->tif_clientdata, module,
                                 "Seek error at scanline %lu",
                                 (unsigned long)tif->tif_row);
@@ -770,17 +747,17 @@ TIFFAppendToStrip(TIFF* tif, uint32 strip, uint8* data, tmsize_t cc)
                 * Seek to end of file, and set that as our location to 
                 * write this strip.
                 */
-                td->td_stripoffset_p[strip] = TIFFSeekFile(tif, 0, SEEK_END);
+                td->td_stripoffset[strip] = TIFFSeekFile(tif, 0, SEEK_END);
                tif->tif_flags |= TIFF_DIRTYSTRIP;
            }

-            tif->tif_curoff = td->td_stripoffset_p[strip];
+            tif->tif_curoff = td->td_stripoffset[strip];

            /*
             * We are starting a fresh strip/tile, so set the size to zero.
             */
-            old_byte_count = td->td_stripbytecount_p[strip];
-            td->td_stripbytecount_p[strip] = 0;
+            old_byte_count = td->td_stripbytecount[strip];
+            td->td_stripbytecount[strip] = 0;
 	}

 	m = tif->tif_curoff+cc;
@@ -797,9 +774,9 @@ TIFFAppendToStrip(TIFF* tif, uint32 strip, uint8* data, tmsize_t cc)
 		    return (0);
 	}
 	tif->tif_curoff = m;
-	td->td_stripbytecount_p[strip] += cc;
+	td->td_stripbytecount[strip] += cc;

-        if( (int64) td->td_stripbytecount_p[strip] != old_byte_count )
+        if( (int64) td->td_stripbytecount[strip] != old_byte_count )
            tif->tif_flags |= TIFF_DIRTYSTRIP;
            
 	return (1);
@@ -29,22 +29,24 @@
 *
 * ZIP (aka Deflate) Compression Support
 *
- * This file is an interface to the zlib library written by
+ * This file is simply an interface to the zlib library written by
 * Jean-loup Gailly and Mark Adler.  You must use version 1.0 or later
- * of the library.
+ * of the library: this code assumes the 1.0 API and also depends on
+ * the ability to write the zlib header multiple times (one per strip)
+ * which was not possible with versions prior to 0.95.  Note also that
+ * older versions of this codec avoided this bug by suppressing the header
+ * entirely.  This means that files written with the old library cannot
+ * be read; they should be converted to a different compression scheme
+ * and then reconverted.
 *
- * Optionally, libdeflate (https://github.com/ebiggers/libdeflate) may be used
- * to do the compression and decompression, but only for whole strips and tiles.
- * For scanline access, zlib will be sued as a fallback.
+ * The data format used by the zlib library is described in the files
+ * zlib-3.1.doc, deflate-1.1.doc and gzip-4.1.doc, available in the
+ * directory ftp://ftp.uu.net/pub/archiving/zip/doc.  The library was
+ * last found at ftp://ftp.uu.net/pub/archiving/zip/zlib/zlib-0.99.tar.gz.
 */
 #include "tif_predict.h"
 #include "zlib.h"

-#if LIBDEFLATE_SUPPORT
-#include "libdeflate.h"
-#endif
-#define LIBDEFLATE_MAX_COMPRESSION_LEVEL 12
-
 #include <stdio.h>

 /*
@@ -68,12 +70,6 @@ typedef struct {
        z_stream        stream;
 	int             zipquality;            /* compression level */
 	int             state;                 /* state flags */
-	int             subcodec;              /* DEFLATE_SUBCODEC_ZLIB or DEFLATE_SUBCODEC_LIBDEFLATE */
-#if LIBDEFLATE_SUPPORT
-	int             libdeflate_state;       /* -1 = until first time ZIPEncode() / ZIPDecode() is called, 0 = use zlib, 1 = use libdeflate */
-	struct libdeflate_decompressor* libdeflate_dec;
-	struct libdeflate_compressor*   libdeflate_enc;
-#endif
 #define ZSTATE_INIT_DECODE 0x01
 #define ZSTATE_INIT_ENCODE 0x02

@@ -136,9 +132,6 @@ ZIPPreDecode(TIFF* tif, uint16 s)
 	if( (sp->state & ZSTATE_INIT_DECODE) == 0 )
            tif->tif_setupdecode( tif );

-#if LIBDEFLATE_SUPPORT
-        sp->libdeflate_state = -1;
-#endif
 	sp->stream.next_in = tif->tif_rawdata;
 	assert(sizeof(sp->stream.avail_in)==4);  /* if this assert gets raised,
 	    we need to simplify this code to reflect a ZLib that is likely updated
@@ -158,77 +151,6 @@ ZIPDecode(TIFF* tif, uint8* op, tmsize_t occ, uint16 s)
 	assert(sp != NULL);
 	assert(sp->state == ZSTATE_INIT_DECODE);

-#if LIBDEFLATE_SUPPORT
-        if( sp->libdeflate_state == 1 )
-            return 0;
-
-        /* If we have libdeflate support and we are asked to read a whole */
-        /* strip/tile, then go for using it */
-        do {
-            TIFFDirectory *td = &tif->tif_dir;
-
-            if( sp->libdeflate_state == 0 )
-                break;
-            if( sp->subcodec == DEFLATE_SUBCODEC_ZLIB )
-                break;
-
-            /* Check if we are in the situation where we can use libdeflate */
-            if (isTiled(tif)) {
-                if( TIFFTileSize64(tif) != (uint64)occ )
-                    break;
-            } else {
-                uint32 strip_height = td->td_imagelength - tif->tif_row;
-                if (strip_height > td->td_rowsperstrip)
-                    strip_height = td->td_rowsperstrip;
-                if( TIFFVStripSize64(tif, strip_height) != (uint64)occ )
-                    break;
-            }
-
-            /* Check for overflow */
-            if( (size_t)tif->tif_rawcc != (uint64)tif->tif_rawcc )
-                break;
-            if( (size_t)occ != (uint64)occ )
-                break;
-
-            /* Go for decompression using libdeflate */
-            {
-                enum libdeflate_result res;
-                if( sp->libdeflate_dec == NULL )
-                {
-                    sp->libdeflate_dec = libdeflate_alloc_decompressor();
-                    if( sp->libdeflate_dec == NULL )
-                    {
-                        break;
-                    }
-                }
-
-                sp->libdeflate_state = 1;
-
-                res = libdeflate_zlib_decompress(
-                    sp->libdeflate_dec, tif->tif_rawcp, (size_t)tif->tif_rawcc, op, (size_t)occ, NULL);
-
-                tif->tif_rawcp += tif->tif_rawcc;
-                tif->tif_rawcc = 0;
-
-                /* We accept LIBDEFLATE_INSUFFICIENT_SPACE has a return */
-                /* There are odd files in the wild where the last strip, when */
-                /* it is smaller in height than td_rowsperstrip, actually contains */
-                /* data for td_rowsperstrip lines. Just ignore that silently. */
-                if( res != LIBDEFLATE_SUCCESS &&
-                    res != LIBDEFLATE_INSUFFICIENT_SPACE )
-                {
-                    TIFFErrorExt(tif->tif_clientdata, module,
-                                 "Decoding error at scanline %lu",
-                                 (unsigned long) tif->tif_row);
-                    return 0;
-                }
-
-                return 1;
-            }
-        } while(0);
-        sp->libdeflate_state = 0;
-#endif /* LIBDEFLATE_SUPPORT */
-
        sp->stream.next_in = tif->tif_rawcp;
        
 	sp->stream.next_out = op;
@@ -276,7 +198,6 @@ ZIPSetupEncode(TIFF* tif)
 {
 	static const char module[] = "ZIPSetupEncode";
 	ZIPState* sp = EncoderState(tif);
-        int cappedQuality;

 	assert(sp != NULL);
 	if (sp->state & ZSTATE_INIT_DECODE) {
@@ -284,11 +205,7 @@ ZIPSetupEncode(TIFF* tif)
 		sp->state = 0;
 	}

-        cappedQuality = sp->zipquality;
-        if( cappedQuality > Z_BEST_COMPRESSION )
-            cappedQuality = Z_BEST_COMPRESSION;
-
-	if (deflateInit(&sp->stream, cappedQuality) != Z_OK) {
+	if (deflateInit(&sp->stream, sp->zipquality) != Z_OK) {
 		TIFFErrorExt(tif->tif_clientdata, module, "%s", SAFE_MSG(sp));
 		return (0);
 	} else {
@@ -310,9 +227,6 @@ ZIPPreEncode(TIFF* tif, uint16 s)
 	if( sp->state != ZSTATE_INIT_ENCODE )
            tif->tif_setupencode( tif );

-#if LIBDEFLATE_SUPPORT
-        sp->libdeflate_state = -1;
-#endif
 	sp->stream.next_out = tif->tif_rawdata;
 	assert(sizeof(sp->stream.avail_out)==4);  /* if this assert gets raised,
 	    we need to simplify this code to reflect a ZLib that is likely updated
@@ -335,95 +249,6 @@ ZIPEncode(TIFF* tif, uint8* bp, tmsize_t cc, uint16 s)
 	assert(sp->state == ZSTATE_INIT_ENCODE);

 	(void) s;
-
-#if LIBDEFLATE_SUPPORT
-        if( sp->libdeflate_state == 1 )
-            return 0;
-
-        /* If we have libdeflate support and we are asked to write a whole */
-        /* strip/tile, then go for using it */
-        do {
-            TIFFDirectory *td = &tif->tif_dir;
-
-            if( sp->libdeflate_state == 0 )
-                break;
-            if( sp->subcodec == DEFLATE_SUBCODEC_ZLIB )
-                break;
-
-            /* Libdeflate does not support the 0-compression level */
-            if( sp->zipquality == Z_NO_COMPRESSION )
-                break;
-
-            /* Check if we are in the situation where we can use libdeflate */
-            if (isTiled(tif)) {
-                if( TIFFTileSize64(tif) != (uint64)cc )
-                    break;
-            } else {
-                uint32 strip_height = td->td_imagelength - tif->tif_row;
-                if (strip_height > td->td_rowsperstrip)
-                    strip_height = td->td_rowsperstrip;
-                if( TIFFVStripSize64(tif, strip_height) != (uint64)cc )
-                    break;
-            }
-
-            /* Check for overflow */
-            if( (size_t)tif->tif_rawdatasize != (uint64)tif->tif_rawdatasize )
-                break;
-            if( (size_t)cc != (uint64)cc )
-                break;
-
-            /* Go for compression using libdeflate */
-            {
-                size_t nCompressedBytes;
-                if( sp->libdeflate_enc == NULL )
-                {
-                    /* To get results as good as zlib, we asked for an extra */
-                    /* level of compression */
-                    sp->libdeflate_enc = libdeflate_alloc_compressor(
-                        sp->zipquality == Z_DEFAULT_COMPRESSION ? 7 :
-                        sp->zipquality >= 6 && sp->zipquality <= 9 ? sp->zipquality + 1 :
-                        sp->zipquality);
-                    if( sp->libdeflate_enc == NULL )
-                    {
-                        TIFFErrorExt(tif->tif_clientdata, module,
-                                    "Cannot allocate compressor");
-                        break;
-                    }
-                }
-
-                /* Make sure the output buffer is large enough for the worse case. */
-                /* In TIFFWriteBufferSetup(), when libtiff allocates the buffer */
-                /* we've taken a 10% margin over the uncompressed size, which should */
-                /* be large enough even for the the worse case scenario. */
-                if( libdeflate_zlib_compress_bound(sp->libdeflate_enc, (size_t)cc) >
-                        (size_t)tif->tif_rawdatasize)
-                {
-                    break;
-                }
-
-                sp->libdeflate_state = 1;
-                nCompressedBytes = libdeflate_zlib_compress(
-                    sp->libdeflate_enc, bp, (size_t)cc, tif->tif_rawdata, (size_t)tif->tif_rawdatasize);
-
-                if( nCompressedBytes == 0 )
-                {
-                    TIFFErrorExt(tif->tif_clientdata, module,
-                                 "Encoder error at scanline %lu",
-                                 (unsigned long) tif->tif_row);
-                    return 0;
-                }
-
-                tif->tif_rawcc = nCompressedBytes;
-
-                if( !TIFFFlushData1(tif) )
-                    return 0;
-
-                return 1;
-            }
-        } while(0);
-        sp->libdeflate_state = 0;
-#endif /* LIBDEFLATE_SUPPORT */
-
 	sp->stream.next_in = bp;
 	assert(sizeof(sp->stream.avail_in)==4);  /* if this assert gets raised,
 	    we need to simplify this code to reflect a ZLib that is likely updated
@@ -440,8 +265,7 @@ ZIPEncode(TIFF* tif, uint8* bp, tmsize_t cc, uint16 s)
 		}
 		if (sp->stream.avail_out == 0) {
 			tif->tif_rawcc = tif->tif_rawdatasize;
-			if (!TIFFFlushData1(tif))
-				return 0;
+			TIFFFlushData1(tif);
 			sp->stream.next_out = tif->tif_rawdata;
 			sp->stream.avail_out = (uint64)tif->tif_rawdatasize <= 0xFFFFFFFFU ? (uInt)tif->tif_rawdatasize : 0xFFFFFFFFU;
 		}
@@ -461,11 +285,6 @@ ZIPPostEncode(TIFF* tif)
 	ZIPState *sp = EncoderState(tif);
 	int state;

-#if LIBDEFLATE_SUPPORT
-        if( sp->libdeflate_state == 1 )
-            return 1;
-#endif
-
 	sp->stream.avail_in = 0;
 	do {
 		state = deflate(&sp->stream, Z_FINISH);
@@ -475,8 +294,7 @@ ZIPPostEncode(TIFF* tif)
 			if ((tmsize_t)sp->stream.avail_out != tif->tif_rawdatasize)
 			{
 				tif->tif_rawcc =  tif->tif_rawdatasize - sp->stream.avail_out;
-				if (!TIFFFlushData1(tif))
-					return 0;
+				TIFFFlushData1(tif);
 				sp->stream.next_out = tif->tif_rawdata;
 				sp->stream.avail_out = (uint64)tif->tif_rawdatasize <= 0xFFFFFFFFU ? (uInt)tif->tif_rawdatasize : 0xFFFFFFFFU;
 			}
@@ -509,14 +327,6 @@ ZIPCleanup(TIFF* tif)
 		inflateEnd(&sp->stream);
 		sp->state = 0;
 	}
-
-#if LIBDEFLATE_SUPPORT
-        if( sp->libdeflate_dec )
-            libdeflate_free_decompressor(sp->libdeflate_dec);
-        if( sp->libdeflate_enc )
-            libdeflate_free_compressor(sp->libdeflate_enc);
-#endif
-
 	_TIFFfree(sp);
 	tif->tif_data = NULL;

@@ -532,55 +342,15 @@ ZIPVSetField(TIFF* tif, uint32 tag, va_list ap)
 	switch (tag) {
 	case TIFFTAG_ZIPQUALITY:
 		sp->zipquality = (int) va_arg(ap, int);
-                if( sp->zipquality < Z_DEFAULT_COMPRESSION ||
-                    sp->zipquality > LIBDEFLATE_MAX_COMPRESSION_LEVEL ) {
-                    TIFFErrorExt(tif->tif_clientdata, module,
-                                 "Invalid ZipQuality value. Should be in [-1,%d] range",
-                                 LIBDEFLATE_MAX_COMPRESSION_LEVEL);
-                    return 0;
-                }
-
-                if ( sp->state&ZSTATE_INIT_ENCODE ) {
-                        int cappedQuality = sp->zipquality;
-                        if( cappedQuality > Z_BEST_COMPRESSION )
-                            cappedQuality = Z_BEST_COMPRESSION;
+		if ( sp->state&ZSTATE_INIT_ENCODE ) {
 			if (deflateParams(&sp->stream,
-			    cappedQuality, Z_DEFAULT_STRATEGY) != Z_OK) {
+			    sp->zipquality, Z_DEFAULT_STRATEGY) != Z_OK) {
 				TIFFErrorExt(tif->tif_clientdata, module, "ZLib error: %s",
 					     SAFE_MSG(sp));
 				return (0);
 			}
 		}
-
-#if LIBDEFLATE_SUPPORT
-                if( sp->libdeflate_enc )
-                {
-                    libdeflate_free_compressor(sp->libdeflate_enc);
-                    sp->libdeflate_enc = NULL;
-                }
-#endif
-
 		return (1);
-
-        case TIFFTAG_DEFLATE_SUBCODEC:
-                sp->subcodec = (int) va_arg(ap, int);
-                if( sp->subcodec != DEFLATE_SUBCODEC_ZLIB &&
-                    sp->subcodec != DEFLATE_SUBCODEC_LIBDEFLATE )
-                {
-                    TIFFErrorExt(tif->tif_clientdata, module,
-                                 "Invalid DeflateCodec value.");
-                    return 0;
-                }
-#if !LIBDEFLATE_SUPPORT
-                if( sp->subcodec == DEFLATE_SUBCODEC_LIBDEFLATE )
-                {
-                    TIFFErrorExt(tif->tif_clientdata, module,
-                                 "DeflateCodec = DEFLATE_SUBCODEC_LIBDEFLATE unsupported in this build");
-                    return 0;
-                }
-#endif
-                return 1;
-
 	default:
 		return (*sp->vsetparent)(tif, tag, ap);
 	}
@@ -596,11 +366,6 @@ ZIPVGetField(TIFF* tif, uint32 tag, va_list ap)
 	case TIFFTAG_ZIPQUALITY:
 		*va_arg(ap, int*) = sp->zipquality;
 		break;
-
-        case TIFFTAG_DEFLATE_SUBCODEC:
-		*va_arg(ap, int*) = sp->subcodec;
-		break;
-
 	default:
 		return (*sp->vgetparent)(tif, tag, ap);
 	}
@@ -609,7 +374,6 @@ ZIPVGetField(TIFF* tif, uint32 tag, va_list ap)

 static const TIFFField zipFields[] = {
    { TIFFTAG_ZIPQUALITY, 0, 0, TIFF_ANY, 0, TIFF_SETGET_INT, TIFF_SETGET_UNDEFINED, FIELD_PSEUDO, TRUE, FALSE, "", NULL },
-    { TIFFTAG_DEFLATE_SUBCODEC, 0, 0, TIFF_ANY, 0, TIFF_SETGET_INT, TIFF_SETGET_UNDEFINED, FIELD_PSEUDO, TRUE, FALSE, "", NULL },
 };

 int
@@ -620,9 +384,6 @@ TIFFInitZIP(TIFF* tif, int scheme)

 	assert( (scheme == COMPRESSION_DEFLATE)
 		|| (scheme == COMPRESSION_ADOBE_DEFLATE));
-#ifdef NDEBUG
-	(void)scheme;
-#endif

 	/*
 	 * Merge codec-specific tag information.
@@ -636,7 +397,7 @@ TIFFInitZIP(TIFF* tif, int scheme)
 	/*
 	 * Allocate state block so tag methods have storage to record values.
 	 */
-	tif->tif_data = (uint8*) _TIFFcalloc(sizeof (ZIPState), 1);
+	tif->tif_data = (uint8*) _TIFFmalloc(sizeof (ZIPState));
 	if (tif->tif_data == NULL)
 		goto bad;
 	sp = ZState(tif);
@@ -656,11 +417,6 @@ TIFFInitZIP(TIFF* tif, int scheme)
 	/* Default values for codec-specific fields */
 	sp->zipquality = Z_DEFAULT_COMPRESSION;	/* default comp. level */
 	sp->state = 0;
-#if LIBDEFLATE_SUPPORT
-        sp->subcodec = DEFLATE_SUBCODEC_LIBDEFLATE;
-#else
-        sp->subcodec = DEFLATE_SUBCODEC_ZLIB;
-#endif

 	/*
 	 * Install codec methods.
@@ -260,8 +260,7 @@ ZSTDEncode(TIFF* tif, uint8* bp, tmsize_t cc, uint16 s)
                }
                if( sp->out_buffer.pos == sp->out_buffer.size ) {
                        tif->tif_rawcc = tif->tif_rawdatasize;
-                        if (!TIFFFlushData1(tif))
-                                return 0;
+                        TIFFFlushData1(tif);
                        sp->out_buffer.dst = tif->tif_rawcp;
                        sp->out_buffer.pos = 0;
                }
@@ -290,8 +289,7 @@ ZSTDPostEncode(TIFF* tif)
                }
                if( sp->out_buffer.pos > 0 ) {
                        tif->tif_rawcc = sp->out_buffer.pos;
-                        if (!TIFFFlushData1(tif))
-                                return 0;
+                        TIFFFlushData1(tif);
                        sp->out_buffer.dst = tif->tif_rawcp;
                        sp->out_buffer.pos = 0;
                }
@@ -119,11 +119,6 @@ typedef struct {
 * Tag data type information.
 *
 * Note: RATIONALs are the ratio of two 32-bit integer values.
- *--:
- * Note2: TIFF_IFD8 data type is used in tiffFields[]-tag definition in order to distinguish the write-handling 
-          of those tags between ClassicTIFF and BigTiff:
-		  For ClassicTIFF libtiff writes a 32-bit value and the TIFF_IFD type-id into the file
-		  For BigTIFF     libtiff writes a 64-bit value and the TIFF_IFD8 type-id into the file
 */
 typedef enum {
 	TIFF_NOTYPE = 0,      /* placeholder */
@@ -380,7 +375,6 @@ typedef enum {
 						   January 2004 */
 #define TIFFTAG_OPIIMAGEID		32781	/* %OPI ImageID
 						   [Adobe TIFF technote] */
-#define	TIFFTAG_TIFFANNOTATIONDATA	32932	/* http://web.archive.org/web/20050309141348/http://www.kofile.com/support%20pro/faqs/annospec.htm */
 /* tags 32952-32956 are private tags registered to Island Graphics */
 #define TIFFTAG_REFPTS			32953	/* image reference points */
 #define TIFFTAG_REGIONTACKPOINT		32954	/* region-xform tack point */
@@ -415,23 +409,8 @@ typedef enum {
 #define TIFFTAG_CFAPATTERN		33422	/* color filter array pattern */
 /* tag 33432 is listed in the 6.0 spec w/ unknown ownership */
 #define	TIFFTAG_COPYRIGHT		33432	/* copyright string */
-/* Tags 33445-33452 are used for GEL fileformat, see
- * http://research.stowers-institute.org/mcm/efg/ScientificSoftware/Utility/TiffTags/GEL-FileFormat.pdf
- */
-#define	TIFFTAG_MD_FILETAG		33445	/* http://research.stowers-institute.org/mcm/efg/ScientificSoftware/Utility/TiffTags/GEL-FileFormat.pdf */
-#define	TIFFTAG_MD_SCALEPIXEL	33446	/* http://research.stowers-institute.org/mcm/efg/ScientificSoftware/Utility/TiffTags/GEL-FileFormat.pdf */
-#define	TIFFTAG_MD_COLORTABLE	33447	/* http://research.stowers-institute.org/mcm/efg/ScientificSoftware/Utility/TiffTags/GEL-FileFormat.pdf */
-#define	TIFFTAG_MD_LABNAME	33448	/* http://research.stowers-institute.org/mcm/efg/ScientificSoftware/Utility/TiffTags/GEL-FileFormat.pdf */
-#define	TIFFTAG_MD_SAMPLEINFO	33449	/* http://research.stowers-institute.org/mcm/efg/ScientificSoftware/Utility/TiffTags/GEL-FileFormat.pdf */
-#define	TIFFTAG_MD_PREPDATE	33450	/* http://research.stowers-institute.org/mcm/efg/ScientificSoftware/Utility/TiffTags/GEL-FileFormat.pdf */
-#define	TIFFTAG_MD_PREPTIME	33451	/* http://research.stowers-institute.org/mcm/efg/ScientificSoftware/Utility/TiffTags/GEL-FileFormat.pdf */
-#define	TIFFTAG_MD_FILEUNITS	33452	/* http://research.stowers-institute.org/mcm/efg/ScientificSoftware/Utility/TiffTags/GEL-FileFormat.pdf */
 /* IPTC TAG from RichTIFF specifications */
 #define TIFFTAG_RICHTIFFIPTC		33723
-#define	TIFFTAG_INGR_PACKET_DATA_TAG	33918	/* Intergraph Application specific storage. */
-#define	TIFFTAG_INGR_FLAG_REGISTERS	33919	/* Intergraph Application specific flags. */
-#define	TIFFTAG_IRASB_TRANSORMATION_MATRIX	33920	/* Originally part of Intergraph's GeoTIFF tags, but likely understood by IrasB only. */
-#define	TIFFTAG_MODELTIEPOINTTAG	33922	/* GeoTIFF */
 /* 34016-34029 are reserved for ANSI IT8 TIFF/IT <dkelly@apago.com) */
 #define TIFFTAG_IT8SITE			34016	/* site name */
 #define TIFFTAG_IT8COLORSEQUENCE	34017	/* color seq. [RGB,CMYK,etc] */
@@ -453,7 +432,6 @@ typedef enum {
 #define TIFFTAG_IT8CMYKEQUIVALENT	34032	/* CMYK color equivalents */
 /* tags 34232-34236 are private tags registered to Texas Instruments */
 #define TIFFTAG_FRAMECOUNT              34232   /* Sequence Frame Count */
-#define TIFFTAG_MODELTRANSFORMATIONTAG	34264	/* Used in interchangeable GeoTIFF files */
 /* tag 34377 is private tag registered to Adobe for PhotoShop */
 #define TIFFTAG_PHOTOSHOP		34377 
 /* tags 34665, 34853 and 40965 are documented in EXIF specification */
@@ -473,15 +451,7 @@ typedef enum {
 #define TIFFTAG_STONITS			37439	/* Sample value to Nits */
 /* tag 34929 is a private tag registered to FedEx */
 #define	TIFFTAG_FEDEX_EDR		34929	/* unknown use */
-#define	TIFFTAG_IMAGESOURCEDATA		37724	/* http://justsolve.archiveteam.org/wiki/PSD, http://www.adobe.com/devnet-apps/photoshop/fileformatashtml/ */
 #define TIFFTAG_INTEROPERABILITYIFD	40965	/* Pointer to Interoperability private directory */
-#define	TIFFTAG_GDAL_METADATA		42112	/* Used by the GDAL library */
-#define	TIFFTAG_GDAL_NODATA		42113	/* Used by the GDAL library */
-#define	TIFFTAG_OCE_SCANJOB_DESCRIPTION	50215	/* Used in the Oce scanning process */
-#define	TIFFTAG_OCE_APPLICATION_SELECTOR	50216	/* Used in the Oce scanning process. */
-#define	TIFFTAG_OCE_IDENTIFICATION_NUMBER	50217
-#define	TIFFTAG_OCE_IMAGELOGIC_CHARACTERISTICS	50218
-
 /* tags 50674 to 50677 are reserved for ESRI */
 #define TIFFTAG_LERC_PARAMETERS         50674   /* Stores LERC version and additional compression method */
 /* Adobe Digital Negative (DNG) format tags */
@@ -565,17 +535,6 @@ typedef enum {
 						   into ICC profile space */
 #define TIFFTAG_CURRENTICCPROFILE	50833	/* & */
 #define TIFFTAG_CURRENTPREPROFILEMATRIX	50834	/* & */
-
-#define TIFFTAG_RPCCOEFFICIENT          50844   /* Define by GDAL for geospatial georeferencing through RPC: http://geotiff.maptools.org/rpc_prop.html */
-
-#define	TIFFTAG_ALIAS_LAYER_METADATA	50784	/* Alias Sketchbook Pro layer usage description. */
-
-/* GeoTIFF DGIWG */
-#define TIFFTAG_TIFF_RSID               50908   /* https://www.awaresystems.be/imaging/tiff/tifftags/tiff_rsid.html */
-#define TIFFTAG_GEO_METADATA            50909   /* https://www.awaresystems.be/imaging/tiff/tifftags/geo_metadata.html */
-
-#define TIFFTAG_EXTRACAMERAPROFILES 50933  /* http://wwwimages.adobe.com/www.adobe.com/content/dam/Adobe/en/products/photoshop/pdfs/dng_spec_1.4.0.0.pdf */
-
 /* tag 65535 is an undefined tag used by Eastman Kodak */
 #define TIFFTAG_DCSHUESHIFTVALUES       65535   /* hue shift correction data */

@@ -656,11 +615,8 @@ typedef enum {
 #define     LERC_ADD_COMPRESSION_DEFLATE 1
 #define     LERC_ADD_COMPRESSION_ZSTD    2
 #define TIFFTAG_LERC_MAXZERROR          65567    /* LERC maximum error */
-#define TIFFTAG_WEBP_LEVEL		  65568	/* WebP compression level */
-#define TIFFTAG_WEBP_LOSSLESS		65569	/* WebP lossless/lossy */
-#define	TIFFTAG_DEFLATE_SUBCODEC	65570	/* ZIP codec: to get/set the sub-codec to use. Will default to libdeflate when available */
-#define     DEFLATE_SUBCODEC_ZLIB       0
-#define     DEFLATE_SUBCODEC_LIBDEFLATE 1
+#define TIFFTAG_WEBP_LEVEL		  65568	/* WebP compression level: WARNING not registered in Adobe-maintained registry */
+#define TIFFTAG_WEBP_LOSSLESS		65569	/* WebP lossless/lossy : WARNING not registered in Adobe-maintained registry */

 /*
 * EXIF tags
@@ -670,8 +626,8 @@ typedef enum {
 #define EXIFTAG_EXPOSUREPROGRAM		34850	/* Exposure program */
 #define EXIFTAG_SPECTRALSENSITIVITY	34852	/* Spectral sensitivity */
 #define EXIFTAG_ISOSPEEDRATINGS		34855	/* ISO speed rating */
-#define EXIFTAG_PHOTOGRAPHICSENSITIVITY	34855 /* Photographic Sensitivity (new name for tag 34855) */
-#define EXIFTAG_OECF			34856	/* Optoelectric conversion factor */
+#define EXIFTAG_OECF			34856	/* Optoelectric conversion
+						   factor */
 #define EXIFTAG_EXIFVERSION		36864	/* Exif version */
 #define EXIFTAG_DATETIMEORIGINAL	36867	/* Date and time of original
 						   data generation */
@@ -723,71 +679,10 @@ typedef enum {
 #define EXIFTAG_SHARPNESS		41994	/* Sharpness */
 #define EXIFTAG_DEVICESETTINGDESCRIPTION 41995	/* Device settings description */
 #define EXIFTAG_SUBJECTDISTANCERANGE	41996	/* Subject distance range */
+#define EXIFTAG_GAINCONTROL		41991	/* Gain control */
+#define EXIFTAG_GAINCONTROL		41991	/* Gain control */
 #define EXIFTAG_IMAGEUNIQUEID		42016	/* Unique image ID */

-/*--: New for EXIF-Version 2.32, May 2019 ... */
-#define EXIFTAG_SENSITIVITYTYPE		34864		/* The SensitivityType tag indicates which one of the parameters of ISO12232 is the PhotographicSensitivity tag. */
-#define EXIFTAG_STANDARDOUTPUTSENSITIVITY		34865		/* This tag indicates the standard output sensitivity value of a camera or input device defined in ISO 12232. */
-#define EXIFTAG_RECOMMENDEDEXPOSUREINDEX		34866		/* recommended exposure index */
-#define EXIFTAG_ISOSPEED		34867		/* ISO speed value */
-#define EXIFTAG_ISOSPEEDLATITUDEYYY		34868		/* ISO speed latitude yyy */
-#define EXIFTAG_ISOSPEEDLATITUDEZZZ		34869		/* ISO speed latitude zzz */
-#define EXIFTAG_OFFSETTIME		36880		/* offset from UTC of the time of DateTime tag. */
-#define EXIFTAG_OFFSETTIMEORIGINAL		36881		/* offset from UTC of the time of DateTimeOriginal tag. */
-#define EXIFTAG_OFFSETTIMEDIGITIZED		36882		/* offset from UTC of the time of DateTimeDigitized tag. */
-#define EXIFTAG_TEMPERATURE		37888		/* Temperature as the ambient situation at the shot in dergee Celsius */
-#define EXIFTAG_HUMIDITY		37889		/* Humidity as the ambient situation at the shot in percent */
-#define EXIFTAG_PRESSURE		37890		/* Pressure as the ambient situation at the shot hecto-Pascal (hPa) */
-#define EXIFTAG_WATERDEPTH		37891		/* WaterDepth as the ambient situation at the shot in meter (m) */
-#define EXIFTAG_ACCELERATION		37892		/* Acceleration (a scalar regardless of direction) as the ambient situation at the shot in units of mGal (10-5 m/s^2) */
-#define EXIFTAG_CAMERAELEVATIONANGLE		37893		/* Elevation/depression. angle of the orientation of the camera(imaging optical axis) as the ambient situation at the shot in degree from -180deg to +180deg. */
-#define EXIFTAG_CAMERAOWNERNAME		42032		/* owner of a camera */
-#define EXIFTAG_BODYSERIALNUMBER		42033		/* serial number of the body of the camera */
-#define EXIFTAG_LENSSPECIFICATION		42034		/* minimum focal length (in mm), maximum focal length (in mm), minimum F number in the minimum focal length, and minimum F number in the maximum focal length, */
-#define EXIFTAG_LENSMAKE		42035		/* the lens manufacturer */
-#define EXIFTAG_LENSMODEL		42036		/* the lens model name and model number */
-#define EXIFTAG_LENSSERIALNUMBER		42037		/* the serial number of the interchangeable lens */
-#define EXIFTAG_GAMMA		42240		/* value of coefficient gamma */
-#define EXIFTAG_COMPOSITEIMAGE		42080	/* composite image */
-#define EXIFTAG_SOURCEIMAGENUMBEROFCOMPOSITEIMAGE		42081	/* source image number of composite image */
-#define EXIFTAG_SOURCEEXPOSURETIMESOFCOMPOSITEIMAGE		42082	/* source exposure times of composite image */
-
-/*
- * EXIF-GPS tags  (Version 2.31, July 2016)
- */
-#define		GPSTAG_VERSIONID		0			/* 	Indicates the version of GPSInfoIFD.	 */
-#define		GPSTAG_LATITUDEREF		1			/* 	Indicates whether the latitude is north or south latitude.	 */
-#define		GPSTAG_LATITUDE		2			/* 	Indicates the latitude.	 */
-#define		GPSTAG_LONGITUDEREF		3			/* 	Indicates whether the longitude is east or west longitude.	 */
-#define		GPSTAG_LONGITUDE		4			/* 	Indicates the longitude.	 */
-#define		GPSTAG_ALTITUDEREF		5			/* 	Indicates the altitude used as the reference altitude.	 */
-#define		GPSTAG_ALTITUDE		6			/* 	Indicates the altitude based on the reference in GPSAltitudeRef.	 */
-#define		GPSTAG_TIMESTAMP		7			/* 	Indicates the time as UTC (Coordinated Universal Time).	 */
-#define		GPSTAG_SATELLITES		8			/* 	Indicates the GPS satellites used for measurements.	 */
-#define		GPSTAG_STATUS		9			/* 	Indicates the status of the GPS receiver when the image is recorded.	 */
-#define		GPSTAG_MEASUREMODE		10			/* 	Indicates the GPS measurement mode.	 */
-#define		GPSTAG_DOP		11			/* 	Indicates the GPS DOP (data degree of precision).	 */
-#define		GPSTAG_SPEEDREF		12			/* 	Indicates the unit used to express the GPS receiver speed of movement.	 */
-#define		GPSTAG_SPEED		13			/* 	Indicates the speed of GPS receiver movement.	 */
-#define		GPSTAG_TRACKREF		14			/* 	Indicates the reference for giving the direction of GPS receiver movement.	 */
-#define		GPSTAG_TRACK		15			/* 	Indicates the direction of GPS receiver movement.	 */
-#define		GPSTAG_IMGDIRECTIONREF		16			/* 	Indicates the reference for giving the direction of the image when it is captured.	 */
-#define		GPSTAG_IMGDIRECTION		17			/* 	Indicates the direction of the image when it was captured.	 */
-#define		GPSTAG_MAPDATUM		18			/* 	Indicates the geodetic survey data used by the GPS receiver. (e.g. WGS-84)	 */
-#define		GPSTAG_DESTLATITUDEREF		19			/* 	Indicates whether the latitude of the destination point is north or south latitude.	 */
-#define		GPSTAG_DESTLATITUDE		20			/* 	Indicates the latitude of the destination point.	 */
-#define		GPSTAG_DESTLONGITUDEREF		21			/* 	Indicates whether the longitude of the destination point is east or west longitude.	 */
-#define		GPSTAG_DESTLONGITUDE		22			/* 	Indicates the longitude of the destination point.	 */
-#define		GPSTAG_DESTBEARINGREF		23			/* 	Indicates the reference used for giving the bearing to the destination point.	 */
-#define		GPSTAG_DESTBEARING		24			/* 	Indicates the bearing to the destination point.	 */
-#define		GPSTAG_DESTDISTANCEREF		25			/* 	Indicates the unit used to express the distance to the destination point.	 */
-#define		GPSTAG_DESTDISTANCE		26			/* 	Indicates the distance to the destination point.	 */
-#define		GPSTAG_PROCESSINGMETHOD		27			/* 	A character string recording the name of the method used for location finding.	 */
-#define		GPSTAG_AREAINFORMATION		28			/* 	A character string recording the name of the GPS area.	 */
-#define		GPSTAG_DATESTAMP		29			/* 	A character string recording date and time information relative to UTC (Coordinated Universal Time).	 */
-#define		GPSTAG_DIFFERENTIAL		30			/* 	Indicates whether differential correction is applied to the GPS receiver.	 */
-#define		GPSTAG_GPSHPOSITIONINGERROR		31			/* Indicates horizontal positioning errors in meters.		 */
-
 #endif /* _TIFF_ */

 /* vim: set ts=8 sts=8 sw=8 noet: */
@@ -87,9 +87,6 @@
 /* Support Deflate compression */
 #cmakedefine ZIP_SUPPORT 1

-/* Support libdeflate enhanced compression */
-#cmakedefine LIBDEFLATE_SUPPORT 1
-
 /* Support strip chopping (whether or not to convert single-strip uncompressed
   images to mutiple strips of ~8Kb to reduce memory usage) */
 #cmakedefine STRIPCHOP_DEFAULT 1
@@ -261,10 +261,8 @@ typedef struct {
 #define LOGLUV_PUBLIC 1
 #endif

-#if defined(__GNUC__) || defined(__attribute__)
-#  define TIFF_ATTRIBUTE(x)    __attribute__(x)
-#else
-#  define TIFF_ATTRIBUTE(x) /*nothing*/
+#if !defined(__GNUC__) && !defined(__attribute__)
+#  define __attribute__(x) /*nothing*/
 #endif

 #if defined(c_plusplus) || defined(__cplusplus)
@@ -352,7 +350,6 @@ extern int TIFFVGetFieldDefaulted(TIFF* tif, uint32 tag, va_list ap);
 extern int TIFFReadDirectory(TIFF* tif);
 extern int TIFFReadCustomDirectory(TIFF* tif, toff_t diroff, const TIFFFieldArray* infoarray);
 extern int TIFFReadEXIFDirectory(TIFF* tif, toff_t diroff);
-extern int TIFFReadGPSDirectory(TIFF* tif, toff_t diroff);
 extern uint64 TIFFScanlineSize64(TIFF* tif);
 extern tmsize_t TIFFScanlineSize(TIFF* tif);
 extern uint64 TIFFRasterScanlineSize64(TIFF* tif);
@@ -403,7 +400,6 @@ extern void TIFFFreeDirectory(TIFF*);
 extern int TIFFCreateDirectory(TIFF*);
 extern int TIFFCreateCustomDirectory(TIFF*,const TIFFFieldArray*);
 extern int TIFFCreateEXIFDirectory(TIFF*);
-extern int TIFFCreateGPSDirectory(TIFF*);
 extern int TIFFLastDirectory(TIFF*);
 extern int TIFFSetDirectory(TIFF*, uint16);
 extern int TIFFSetSubDirectory(TIFF*, uint64);
@@ -415,8 +411,6 @@ extern int TIFFWriteDirectory(TIFF *);
 extern int TIFFWriteCustomDirectory(TIFF *, uint64 *);
 extern int TIFFCheckpointDirectory(TIFF *);
 extern int TIFFRewriteDirectory(TIFF *);
-extern int TIFFDeferStrileArrayWriting(TIFF *);
-extern int TIFFForceStrileArrayWriting(TIFF* );

 #if defined(c_plusplus) || defined(__cplusplus)
 extern void TIFFPrintDirectory(TIFF*, FILE*, long = 0);
@@ -454,10 +448,10 @@ extern TIFF* TIFFClientOpen(const char*, const char*,
 	    TIFFMapFileProc, TIFFUnmapFileProc);
 extern const char* TIFFFileName(TIFF*);
 extern const char* TIFFSetFileName(TIFF*, const char *);
-extern void TIFFError(const char*, const char*, ...) TIFF_ATTRIBUTE((__format__ (__printf__,2,3)));
-extern void TIFFErrorExt(thandle_t, const char*, const char*, ...) TIFF_ATTRIBUTE((__format__ (__printf__,3,4)));
-extern void TIFFWarning(const char*, const char*, ...) TIFF_ATTRIBUTE((__format__ (__printf__,2,3)));
-extern void TIFFWarningExt(thandle_t, const char*, const char*, ...) TIFF_ATTRIBUTE((__format__ (__printf__,3,4)));
+extern void TIFFError(const char*, const char*, ...) __attribute__((__format__ (__printf__,2,3)));
+extern void TIFFErrorExt(thandle_t, const char*, const char*, ...) __attribute__((__format__ (__printf__,3,4)));
+extern void TIFFWarning(const char*, const char*, ...) __attribute__((__format__ (__printf__,2,3)));
+extern void TIFFWarningExt(thandle_t, const char*, const char*, ...) __attribute__((__format__ (__printf__,3,4)));
 extern TIFFErrorHandler TIFFSetErrorHandler(TIFFErrorHandler);
 extern TIFFErrorHandlerExt TIFFSetErrorHandlerExt(TIFFErrorHandlerExt);
 extern TIFFErrorHandler TIFFSetWarningHandler(TIFFErrorHandler);
@@ -474,9 +468,6 @@ extern tmsize_t TIFFReadEncodedStrip(TIFF* tif, uint32 strip, void* buf, tmsize_
 extern tmsize_t TIFFReadRawStrip(TIFF* tif, uint32 strip, void* buf, tmsize_t size);  
 extern tmsize_t TIFFReadEncodedTile(TIFF* tif, uint32 tile, void* buf, tmsize_t size);  
 extern tmsize_t TIFFReadRawTile(TIFF* tif, uint32 tile, void* buf, tmsize_t size);  
-extern int      TIFFReadFromUserBuffer(TIFF* tif, uint32 strile,
-                                       void* inbuf, tmsize_t insize,
-                                       void* outbuf, tmsize_t outsize);
 extern tmsize_t TIFFWriteEncodedStrip(TIFF* tif, uint32 strip, void* data, tmsize_t cc);
 extern tmsize_t TIFFWriteRawStrip(TIFF* tif, uint32 strip, void* data, tmsize_t cc);  
 extern tmsize_t TIFFWriteEncodedTile(TIFF* tif, uint32 tile, void* data, tmsize_t cc);  
@@ -497,11 +488,6 @@ extern void TIFFSwabArrayOfDouble(double* dp, tmsize_t n);
 extern void TIFFReverseBits(uint8* cp, tmsize_t n);
 extern const unsigned char* TIFFGetBitRevTable(int);

-extern uint64 TIFFGetStrileOffset(TIFF *tif, uint32 strile);
-extern uint64 TIFFGetStrileByteCount(TIFF *tif, uint32 strile);
-extern uint64 TIFFGetStrileOffsetWithErr(TIFF *tif, uint32 strile, int *pbErr);
-extern uint64 TIFFGetStrileByteCountWithErr(TIFF *tif, uint32 strile, int *pbErr);
-
 #ifdef LOGLUV_PUBLIC
 #define U_NEU		0.210526316
 #define V_NEU		0.473684211
@@ -77,19 +77,6 @@ extern int snprintf(char* str, size_t size, const char* format, ...);
 #define	FALSE	0
 #endif

-#define TIFF_SIZE_T_MAX ((size_t) ~ ((size_t)0))
-#define TIFF_TMSIZE_T_MAX (tmsize_t)(TIFF_SIZE_T_MAX >> 1)
-
-/*
- * Largest 32-bit unsigned integer value.
- */
-#define TIFF_UINT32_MAX 0xFFFFFFFFU
-
-/*
- * Largest 64-bit unsigned integer value.
- */
-#define TIFF_UINT64_MAX (((uint64)(TIFF_UINT32_MAX)) << 32 | TIFF_UINT32_MAX)
-
 typedef struct client_info {
    struct client_info *next;
    void *data;
@@ -140,9 +127,6 @@ struct tiff {
        #define TIFF_DIRTYSTRIP 0x200000U /* stripoffsets/stripbytecount dirty*/
        #define TIFF_PERSAMPLE  0x400000U /* get/set per sample tags as arrays */
        #define TIFF_BUFFERMMAP 0x800000U /* read buffer (tif_rawdata) points into mmap() memory */
-        #define TIFF_DEFERSTRILELOAD 0x1000000U /* defer strip/tile offset/bytecount array loading. */
-        #define TIFF_LAZYSTRILELOAD  0x2000000U /* lazy/ondemand loading of strip/tile offset/bytecount values. Only used if TIFF_DEFERSTRILELOAD is set and in read-only mode */
-        #define TIFF_CHOPPEDUPARRAYS 0x4000000U /* set when allocChoppedUpStripArrays() has modified strip array */
 	uint64               tif_diroff;       /* file offset of current directory */
 	uint64               tif_nextdiroff;   /* file offset of following directory */
 	uint64*              tif_dirlist;      /* list of offsets to already seen directories to prevent IFD looping */
@@ -274,7 +258,7 @@ struct tiff {
 #define TIFFhowmany8_64(x) (((x)&0x07)?((uint64)(x)>>3)+1:(uint64)(x)>>3)
 #define TIFFroundup_64(x, y) (TIFFhowmany_64(x,y)*(y))

-/* Safe multiply which returns zero if there is an *unsigned* integer overflow. This macro is not safe for *signed* integer types */
+/* Safe multiply which returns zero if there is an integer overflow */
 #define TIFFSafeMultiply(t,v,m) ((((t)(m) != (t)0) && (((t)(((v)*(m))/(m))) == (t)(v))) ? (t)((v)*(m)) : (t)0)

 #define TIFFmax(A,B) ((A)>(B)?(A):(B))
@@ -367,9 +351,6 @@ extern uint32 _TIFFDefaultStripSize(TIFF* tif, uint32 s);
 extern void _TIFFDefaultTileSize(TIFF* tif, uint32* tw, uint32* th);
 extern int _TIFFDataSize(TIFFDataType type);

-/*--: Rational2Double: Return size of TIFFSetGetFieldType in bytes. */
-extern int _TIFFSetGetFieldSize(TIFFSetGetFieldType setgettype);
-
 extern void _TIFFsetByteArray(void**, void*, uint32);
 extern void _TIFFsetString(char**, char*);
 extern void _TIFFsetShortArray(uint16**, uint16*, uint32);
@@ -387,8 +368,6 @@ extern TIFFErrorHandlerExt _TIFFerrorHandlerExt;

 extern uint32 _TIFFMultiply32(TIFF*, uint32, uint32, const char*);
 extern uint64 _TIFFMultiply64(TIFF*, uint64, uint64, const char*);
-extern tmsize_t _TIFFMultiplySSize(TIFF*, tmsize_t, tmsize_t, const char*);
-extern tmsize_t _TIFFCastUInt64ToSSize(TIFF*, uint64, const char*);
 extern void* _TIFFCheckMalloc(TIFF*, tmsize_t, tmsize_t, const char*);
 extern void* _TIFFCheckRealloc(TIFF*, void*, tmsize_t, tmsize_t, const char*);

@@ -1,4 +1,4 @@
-#define TIFFLIB_VERSION_STR "LIBTIFF, Version 4.2.0\nCopyright (c) 1988-1996 Sam Leffler\nCopyright (c) 1991-1996 Silicon Graphics, Inc."
+#define TIFFLIB_VERSION_STR "LIBTIFF, Version 4.0.10\nCopyright (c) 1988-1996 Sam Leffler\nCopyright (c) 1991-1996 Silicon Graphics, Inc."
 /*
 * This define can be used in code that requires
 * compilation-related definitions specific to a
@@ -6,4 +6,4 @@
 * version checking should be done based on the
 * string returned by TIFFGetVersion.
 */
-#define TIFFLIB_VERSION 20201219
+#define TIFFLIB_VERSION 20181110
@@ -34,7 +34,7 @@ endif()

 add_definitions(-DWEBP_USE_THREAD)

-add_library(${WEBP_LIBRARY} STATIC ${OPENCV_3RDPARTY_EXCLUDE_FROM_ALL} ${lib_srcs} ${lib_hdrs})
+add_library(${WEBP_LIBRARY} STATIC ${lib_srcs} ${lib_hdrs})
 if(ANDROID)
  target_link_libraries(${WEBP_LIBRARY} ${CPUFEATURES_LIBRARIES})
 endif()
@@ -59,6 +59,6 @@ if(ENABLE_SOLUTION_FOLDERS)
 endif()

 if(NOT BUILD_SHARED_LIBS)
-  ocv_install_target(${WEBP_LIBRARY} EXPORT OpenCVModules ARCHIVE DESTINATION ${OPENCV_3P_LIB_INSTALL_PATH} COMPONENT dev OPTIONAL)
+  ocv_install_target(${WEBP_LIBRARY} EXPORT OpenCVModules ARCHIVE DESTINATION ${OPENCV_3P_LIB_INSTALL_PATH} COMPONENT dev)
 endif()

@@ -25,16 +25,21 @@
 static int EmitYUV(const VP8Io* const io, WebPDecParams* const p) {
  WebPDecBuffer* output = p->output;
  const WebPYUVABuffer* const buf = &output->u.YUVA;
-  uint8_t* const y_dst = buf->y + (size_t)io->mb_y * buf->y_stride;
-  uint8_t* const u_dst = buf->u + (size_t)(io->mb_y >> 1) * buf->u_stride;
-  uint8_t* const v_dst = buf->v + (size_t)(io->mb_y >> 1) * buf->v_stride;
+  uint8_t* const y_dst = buf->y + io->mb_y * buf->y_stride;
+  uint8_t* const u_dst = buf->u + (io->mb_y >> 1) * buf->u_stride;
+  uint8_t* const v_dst = buf->v + (io->mb_y >> 1) * buf->v_stride;
  const int mb_w = io->mb_w;
  const int mb_h = io->mb_h;
  const int uv_w = (mb_w + 1) / 2;
  const int uv_h = (mb_h + 1) / 2;
-  WebPCopyPlane(io->y, io->y_stride, y_dst, buf->y_stride, mb_w, mb_h);
-  WebPCopyPlane(io->u, io->uv_stride, u_dst, buf->u_stride, uv_w, uv_h);
-  WebPCopyPlane(io->v, io->uv_stride, v_dst, buf->v_stride, uv_w, uv_h);
+  int j;
+  for (j = 0; j < mb_h; ++j) {
+    memcpy(y_dst + j * buf->y_stride, io->y + j * io->y_stride, mb_w);
+  }
+  for (j = 0; j < uv_h; ++j) {
+    memcpy(u_dst + j * buf->u_stride, io->u + j * io->uv_stride, uv_w);
+    memcpy(v_dst + j * buf->v_stride, io->v + j * io->uv_stride, uv_w);
+  }
  return io->mb_h;
 }

@@ -42,7 +47,7 @@ static int EmitYUV(const VP8Io* const io, WebPDecParams* const p) {
 static int EmitSampledRGB(const VP8Io* const io, WebPDecParams* const p) {
  WebPDecBuffer* const output = p->output;
  WebPRGBABuffer* const buf = &output->u.RGBA;
-  uint8_t* const dst = buf->rgba + (size_t)io->mb_y * buf->stride;
+  uint8_t* const dst = buf->rgba + io->mb_y * buf->stride;
  WebPSamplerProcessPlane(io->y, io->y_stride,
                          io->u, io->v, io->uv_stride,
                          dst, buf->stride, io->mb_w, io->mb_h,
@@ -57,7 +62,7 @@ static int EmitSampledRGB(const VP8Io* const io, WebPDecParams* const p) {
 static int EmitFancyRGB(const VP8Io* const io, WebPDecParams* const p) {
  int num_lines_out = io->mb_h;   // a priori guess
  const WebPRGBABuffer* const buf = &p->output->u.RGBA;
-  uint8_t* dst = buf->rgba + (size_t)io->mb_y * buf->stride;
+  uint8_t* dst = buf->rgba + io->mb_y * buf->stride;
  WebPUpsampleLinePairFunc upsample = WebPUpsamplers[p->output->colorspace];
  const uint8_t* cur_y = io->y;
  const uint8_t* cur_u = io->u;
@@ -128,7 +133,7 @@ static int EmitAlphaYUV(const VP8Io* const io, WebPDecParams* const p,
  const WebPYUVABuffer* const buf = &p->output->u.YUVA;
  const int mb_w = io->mb_w;
  const int mb_h = io->mb_h;
-  uint8_t* dst = buf->a + (size_t)io->mb_y * buf->a_stride;
+  uint8_t* dst = buf->a + io->mb_y * buf->a_stride;
  int j;
  (void)expected_num_lines_out;
  assert(expected_num_lines_out == mb_h);
@@ -181,7 +186,7 @@ static int EmitAlphaRGB(const VP8Io* const io, WebPDecParams* const p,
        (colorspace == MODE_ARGB || colorspace == MODE_Argb);
    const WebPRGBABuffer* const buf = &p->output->u.RGBA;
    int num_rows;
-    const size_t start_y = GetAlphaSourceRow(io, &alpha, &num_rows);
+    const int start_y = GetAlphaSourceRow(io, &alpha, &num_rows);
    uint8_t* const base_rgba = buf->rgba + start_y * buf->stride;
    uint8_t* const dst = base_rgba + (alpha_first ? 0 : 3);
    const int has_alpha = WebPDispatchAlpha(alpha, io->width, mb_w,
@@ -205,7 +210,7 @@ static int EmitAlphaRGBA4444(const VP8Io* const io, WebPDecParams* const p,
    const WEBP_CSP_MODE colorspace = p->output->colorspace;
    const WebPRGBABuffer* const buf = &p->output->u.RGBA;
    int num_rows;
-    const size_t start_y = GetAlphaSourceRow(io, &alpha, &num_rows);
+    const int start_y = GetAlphaSourceRow(io, &alpha, &num_rows);
    uint8_t* const base_rgba = buf->rgba + start_y * buf->stride;
 #if (WEBP_SWAP_16BIT_CSP == 1)
    uint8_t* alpha_dst = base_rgba;
@@ -271,9 +276,9 @@ static int EmitRescaledYUV(const VP8Io* const io, WebPDecParams* const p) {
 static int EmitRescaledAlphaYUV(const VP8Io* const io, WebPDecParams* const p,
                                int expected_num_lines_out) {
  const WebPYUVABuffer* const buf = &p->output->u.YUVA;
-  uint8_t* const dst_a = buf->a + (size_t)p->last_y * buf->a_stride;
+  uint8_t* const dst_a = buf->a + p->last_y * buf->a_stride;
  if (io->a != NULL) {
-    uint8_t* const dst_y = buf->y + (size_t)p->last_y * buf->y_stride;
+    uint8_t* const dst_y = buf->y + p->last_y * buf->y_stride;
    const int num_lines_out = Rescale(io->a, io->width, io->mb_h, p->scaler_a);
    assert(expected_num_lines_out == num_lines_out);
    if (num_lines_out > 0) {   // unmultiply the Y
@@ -351,7 +356,7 @@ static int ExportRGB(WebPDecParams* const p, int y_pos) {
  const WebPYUV444Converter convert =
      WebPYUV444Converters[p->output->colorspace];
  const WebPRGBABuffer* const buf = &p->output->u.RGBA;
-  uint8_t* dst = buf->rgba + (size_t)y_pos * buf->stride;
+  uint8_t* dst = buf->rgba + y_pos * buf->stride;
  int num_lines_out = 0;
  // For RGB rescaling, because of the YUV420, current scan position
  // U/V can be +1/-1 line from the Y one.  Hence the double test.
@@ -378,15 +383,15 @@ static int EmitRescaledRGB(const VP8Io* const io, WebPDecParams* const p) {
  while (j < mb_h) {
    const int y_lines_in =
        WebPRescalerImport(p->scaler_y, mb_h - j,
-                           io->y + (size_t)j * io->y_stride, io->y_stride);
+                           io->y + j * io->y_stride, io->y_stride);
    j += y_lines_in;
    if (WebPRescaleNeededLines(p->scaler_u, uv_mb_h - uv_j)) {
-      const int u_lines_in = WebPRescalerImport(
-          p->scaler_u, uv_mb_h - uv_j, io->u + (size_t)uv_j * io->uv_stride,
-          io->uv_stride);
-      const int v_lines_in = WebPRescalerImport(
-          p->scaler_v, uv_mb_h - uv_j, io->v + (size_t)uv_j * io->uv_stride,
-          io->uv_stride);
+      const int u_lines_in =
+          WebPRescalerImport(p->scaler_u, uv_mb_h - uv_j,
+                             io->u + uv_j * io->uv_stride, io->uv_stride);
+      const int v_lines_in =
+          WebPRescalerImport(p->scaler_v, uv_mb_h - uv_j,
+                             io->v + uv_j * io->uv_stride, io->uv_stride);
      (void)v_lines_in;   // remove a gcc warning
      assert(u_lines_in == v_lines_in);
      uv_j += u_lines_in;
@@ -398,7 +403,7 @@ static int EmitRescaledRGB(const VP8Io* const io, WebPDecParams* const p) {

 static int ExportAlpha(WebPDecParams* const p, int y_pos, int max_lines_out) {
  const WebPRGBABuffer* const buf = &p->output->u.RGBA;
-  uint8_t* const base_rgba = buf->rgba + (size_t)y_pos * buf->stride;
+  uint8_t* const base_rgba = buf->rgba + y_pos * buf->stride;
  const WEBP_CSP_MODE colorspace = p->output->colorspace;
  const int alpha_first =
      (colorspace == MODE_ARGB || colorspace == MODE_Argb);
@@ -426,7 +431,7 @@ static int ExportAlpha(WebPDecParams* const p, int y_pos, int max_lines_out) {
 static int ExportAlphaRGBA4444(WebPDecParams* const p, int y_pos,
                               int max_lines_out) {
  const WebPRGBABuffer* const buf = &p->output->u.RGBA;
-  uint8_t* const base_rgba = buf->rgba + (size_t)y_pos * buf->stride;
+  uint8_t* const base_rgba = buf->rgba + y_pos * buf->stride;
 #if (WEBP_SWAP_16BIT_CSP == 1)
  uint8_t* alpha_dst = base_rgba;
 #else
@@ -465,7 +470,7 @@ static int EmitRescaledAlphaRGB(const VP8Io* const io, WebPDecParams* const p,
    int lines_left = expected_num_out_lines;
    const int y_end = p->last_y + lines_left;
    while (lines_left > 0) {
-      const int64_t row_offset = (int64_t)scaler->src_y - io->mb_y;
+      const int row_offset = scaler->src_y - io->mb_y;
      WebPRescalerImport(scaler, io->mb_h + io->mb_y - scaler->src_y,
                         io->a + row_offset * io->width, io->width);
      lines_left -= p->emit_alpha_row(p, y_end - lines_left, lines_left);
@@ -494,11 +494,13 @@ static int GetCoeffsAlt(VP8BitReader* const br,
  return 16;
 }

-WEBP_DSP_INIT_FUNC(InitGetCoeffs) {
-  if (VP8GetCPUInfo != NULL && VP8GetCPUInfo(kSlowSSSE3)) {
-    GetCoeffs = GetCoeffsAlt;
-  } else {
-    GetCoeffs = GetCoeffsFast;
+static WEBP_TSAN_IGNORE_FUNCTION void InitGetCoeffs(void) {
+  if (GetCoeffs == NULL) {
+    if (VP8GetCPUInfo != NULL && VP8GetCPUInfo(kSlowSSSE3)) {
+      GetCoeffs = GetCoeffsAlt;
+    } else {
+      GetCoeffs = GetCoeffsFast;
+    }
  }
 }

@@ -31,7 +31,7 @@ extern "C" {

 // version numbers
 #define DEC_MAJ_VERSION 1
-#define DEC_MIN_VERSION 2
+#define DEC_MIN_VERSION 1
 #define DEC_REV_VERSION 0

 // YUV-cache parameters. Cache is 32-bytes wide (= one cacheline).
@@ -947,6 +947,7 @@ static WEBP_INLINE void CopyBlock8b(uint8_t* const dst, int dist, int length) {
        break;
      default:
        goto Copy;
+        break;
    }
    CopySmallPattern8b(src, dst, length, pattern);
    return;
@@ -346,15 +346,12 @@ int WebPAnimDecoderGetNext(WebPAnimDecoder* dec,
  {
    const uint8_t* in = iter.fragment.bytes;
    const size_t in_size = iter.fragment.size;
-    const uint32_t stride = width * NUM_CHANNELS;  // at most 25 + 2 bits
-    const uint64_t out_offset = (uint64_t)iter.y_offset * stride +
-                                (uint64_t)iter.x_offset * NUM_CHANNELS;  // 53b
-    const uint64_t size = (uint64_t)iter.height * stride;  // at most 25 + 27b
+    const size_t out_offset =
+        (iter.y_offset * width + iter.x_offset) * NUM_CHANNELS;
    WebPDecoderConfig* const config = &dec->config_;
    WebPRGBABuffer* const buf = &config->output.u.RGBA;
-    if ((size_t)size != size) goto Error;
-    buf->stride = (int)stride;
-    buf->size = (size_t)size;
+    buf->stride = NUM_CHANNELS * width;
+    buf->size = buf->stride * iter.height;
    buf->rgba = dec->curr_frame_ + out_offset;

    if (WebPDecode(in, in_size, config) != VP8_STATUS_OK) {
@@ -24,7 +24,7 @@
 #include "src/webp/format_constants.h"

 #define DMUX_MAJ_VERSION 1
-#define DMUX_MIN_VERSION 2
+#define DMUX_MIN_VERSION 1
 #define DMUX_REV_VERSION 0

 typedef struct {
@@ -312,7 +312,6 @@ static ParseStatus ParseAnimationFrame(
  int bits;
  MemBuffer* const mem = &dmux->mem_;
  Frame* frame;
-  size_t start_offset;
  ParseStatus status =
      NewFrame(mem, ANMF_CHUNK_SIZE, frame_chunk_size, &frame);
  if (status != PARSE_OK) return status;
@@ -333,11 +332,7 @@ static ParseStatus ParseAnimationFrame(

  // Store a frame only if the animation flag is set there is some data for
  // this frame is available.
-  start_offset = mem->start_;
  status = StoreFrame(dmux->num_frames_ + 1, anmf_payload_size, mem, frame);
-  if (status != PARSE_ERROR && mem->start_ - start_offset > anmf_payload_size) {
-    status = PARSE_ERROR;
-  }
  if (status != PARSE_ERROR && is_animation && frame->frame_num_ > 0) {
    added_frame = AddFrame(dmux, frame);
    if (added_frame) {
@@ -359,11 +359,6 @@ static int HasAlpha32b_C(const uint8_t* src, int length) {
  return 0;
 }

-static void AlphaReplace_C(uint32_t* src, int length, uint32_t color) {
-  int x;
-  for (x = 0; x < length; ++x) if ((src[x] >> 24) == 0) src[x] = color;
-}
-
 //------------------------------------------------------------------------------
 // Simple channel manipulations.

@@ -405,7 +400,6 @@ void (*WebPPackRGB)(const uint8_t* r, const uint8_t* g, const uint8_t* b,

 int (*WebPHasAlpha8b)(const uint8_t* src, int length);
 int (*WebPHasAlpha32b)(const uint8_t* src, int length);
-void (*WebPAlphaReplace)(uint32_t* src, int length, uint32_t color);

 //------------------------------------------------------------------------------
 // Init function
@@ -434,7 +428,6 @@ WEBP_DSP_INIT_FUNC(WebPInitAlphaProcessing) {

  WebPHasAlpha8b = HasAlpha8b_C;
  WebPHasAlpha32b = HasAlpha32b_C;
-  WebPAlphaReplace = AlphaReplace_C;

  // If defined, use CPUInfo() to overwrite some pointers with faster versions.
  if (VP8GetCPUInfo != NULL) {
@@ -476,5 +469,4 @@ WEBP_DSP_INIT_FUNC(WebPInitAlphaProcessing) {
  assert(WebPPackRGB != NULL);
  assert(WebPHasAlpha8b != NULL);
  assert(WebPHasAlpha32b != NULL);
-  assert(WebPAlphaReplace != NULL);
 }
@@ -265,27 +265,6 @@ static int HasAlpha32b_SSE2(const uint8_t* src, int length) {
  return 0;
 }

-static void AlphaReplace_SSE2(uint32_t* src, int length, uint32_t color) {
-  const __m128i m_color = _mm_set1_epi32(color);
-  const __m128i zero = _mm_setzero_si128();
-  int i = 0;
-  for (; i + 8 <= length; i += 8) {
-    const __m128i a0 = _mm_loadu_si128((const __m128i*)(src + i + 0));
-    const __m128i a1 = _mm_loadu_si128((const __m128i*)(src + i + 4));
-    const __m128i b0 = _mm_srai_epi32(a0, 24);
-    const __m128i b1 = _mm_srai_epi32(a1, 24);
-    const __m128i c0 = _mm_cmpeq_epi32(b0, zero);
-    const __m128i c1 = _mm_cmpeq_epi32(b1, zero);
-    const __m128i d0 = _mm_and_si128(c0, m_color);
-    const __m128i d1 = _mm_and_si128(c1, m_color);
-    const __m128i e0 = _mm_andnot_si128(c0, a0);
-    const __m128i e1 = _mm_andnot_si128(c1, a1);
-    _mm_storeu_si128((__m128i*)(src + i + 0), _mm_or_si128(d0, e0));
-    _mm_storeu_si128((__m128i*)(src + i + 4), _mm_or_si128(d1, e1));
-  }
-  for (; i < length; ++i) if ((src[i] >> 24) == 0) src[i] = color;
-}
-
 // -----------------------------------------------------------------------------
 // Apply alpha value to rows

@@ -355,7 +334,6 @@ WEBP_TSAN_IGNORE_FUNCTION void WebPInitAlphaProcessingSSE2(void) {

  WebPHasAlpha8b = HasAlpha8b_SSE2;
  WebPHasAlpha32b = HasAlpha32b_SSE2;
-  WebPAlphaReplace = AlphaReplace_SSE2;
 }

 #else  // !WEBP_USE_SSE2
@@ -55,18 +55,12 @@ static WEBP_INLINE void GetCPUInfo(int cpu_info[4], int info_type) {
    : "=a"(cpu_info[0]), "=b"(cpu_info[1]), "=c"(cpu_info[2]), "=d"(cpu_info[3])
    : "a"(info_type), "c"(0));
 }
-#elif defined(_MSC_VER) && (defined(_M_X64) || defined(_M_IX86))
-
-#if defined(_MSC_FULL_VER) && _MSC_FULL_VER >= 150030729  // >= VS2008 SP1
+#elif (defined(_M_X64) || defined(_M_IX86)) && \
+      defined(_MSC_FULL_VER) && _MSC_FULL_VER >= 150030729  // >= VS2008 SP1
 #include <intrin.h>
 #define GetCPUInfo(info, type) __cpuidex(info, type, 0)  // set ecx=0
-#define WEBP_HAVE_MSC_CPUID
-#elif _MSC_VER > 1310
-#include <intrin.h>
+#elif defined(WEBP_MSC_SSE2)
 #define GetCPUInfo __cpuid
-#define WEBP_HAVE_MSC_CPUID
-#endif
-
 #endif

 // NaCl has no support for xgetbv or the raw opcode.
@@ -100,7 +94,7 @@ static WEBP_INLINE uint64_t xgetbv(void) {
 #define xgetbv() 0U  // no AVX for older x64 or unrecognized toolchains.
 #endif

-#if defined(__i386__) || defined(__x86_64__) || defined(WEBP_HAVE_MSC_CPUID)
+#if defined(__i386__) || defined(__x86_64__) || defined(WEBP_MSC_SSE2)

 // helper function for run-time detection of slow SSSE3 platforms
 static int CheckSlowModel(int info) {
@@ -185,30 +179,6 @@ static int AndroidCPUInfo(CPUFeature feature) {
  return 0;
 }
 VP8CPUInfo VP8GetCPUInfo = AndroidCPUInfo;
-#elif defined(EMSCRIPTEN) // also needs to be before generic NEON test
-// Use compile flags as an indicator of SIMD support instead of a runtime check.
-static int wasmCPUInfo(CPUFeature feature) {
-  switch (feature) {
-#ifdef WEBP_USE_SSE2
-    case kSSE2:
-      return 1;
-#endif
-#ifdef WEBP_USE_SSE41
-    case kSSE3:
-    case kSlowSSSE3:
-    case kSSE4_1:
-      return 1;
-#endif
-#ifdef WEBP_USE_NEON
-    case kNEON:
-      return 1;
-#endif
-    default:
-      break;
-  }
-  return 0;
-}
-VP8CPUInfo VP8GetCPUInfo = wasmCPUInfo;
 #elif defined(WEBP_USE_NEON)
 // define a dummy function to enable turning off NEON at runtime by setting
 // VP8DecGetCPUInfo = NULL
@@ -1283,12 +1283,12 @@ static void DC4_NEON(uint8_t* dst) {    // DC
  const uint8x8_t A = vld1_u8(dst - BPS);  // top row
  const uint16x4_t p0 = vpaddl_u8(A);  // cascading summation of the top
  const uint16x4_t p1 = vpadd_u16(p0, p0);
-  const uint8x8_t L0 = vld1_u8(dst + 0 * BPS - 1);
-  const uint8x8_t L1 = vld1_u8(dst + 1 * BPS - 1);
-  const uint8x8_t L2 = vld1_u8(dst + 2 * BPS - 1);
-  const uint8x8_t L3 = vld1_u8(dst + 3 * BPS - 1);
-  const uint16x8_t s0 = vaddl_u8(L0, L1);
-  const uint16x8_t s1 = vaddl_u8(L2, L3);
+  const uint16x8_t L0 = vmovl_u8(vld1_u8(dst + 0 * BPS - 1));
+  const uint16x8_t L1 = vmovl_u8(vld1_u8(dst + 1 * BPS - 1));
+  const uint16x8_t L2 = vmovl_u8(vld1_u8(dst + 2 * BPS - 1));
+  const uint16x8_t L3 = vmovl_u8(vld1_u8(dst + 3 * BPS - 1));
+  const uint16x8_t s0 = vaddq_u16(L0, L1);
+  const uint16x8_t s1 = vaddq_u16(L2, L3);
  const uint16x8_t s01 = vaddq_u16(s0, s1);
  const uint16x8_t sum = vaddq_u16(s01, vcombine_u16(p1, p1));
  const uint8x8_t dc0 = vrshrn_n_u16(sum, 3);  // (sum + 4) >> 3
@@ -1429,7 +1429,8 @@ static WEBP_INLINE void DC8_NEON(uint8_t* dst, int do_top, int do_left) {
  if (do_top) {
    const uint8x8_t A = vld1_u8(dst - BPS);  // top row
 #if defined(__aarch64__)
-    const uint16_t p2 = vaddlv_u8(A);
+    const uint16x8_t B = vmovl_u8(A);
+    const uint16_t p2 = vaddvq_u16(B);
    sum_top = vdupq_n_u16(p2);
 #else
    const uint16x4_t p0 = vpaddl_u8(A);  // cascading summation of the top
@@ -1440,18 +1441,18 @@ static WEBP_INLINE void DC8_NEON(uint8_t* dst, int do_top, int do_left) {
  }

  if (do_left) {
-    const uint8x8_t L0 = vld1_u8(dst + 0 * BPS - 1);
-    const uint8x8_t L1 = vld1_u8(dst + 1 * BPS - 1);
-    const uint8x8_t L2 = vld1_u8(dst + 2 * BPS - 1);
-    const uint8x8_t L3 = vld1_u8(dst + 3 * BPS - 1);
-    const uint8x8_t L4 = vld1_u8(dst + 4 * BPS - 1);
-    const uint8x8_t L5 = vld1_u8(dst + 5 * BPS - 1);
-    const uint8x8_t L6 = vld1_u8(dst + 6 * BPS - 1);
-    const uint8x8_t L7 = vld1_u8(dst + 7 * BPS - 1);
-    const uint16x8_t s0 = vaddl_u8(L0, L1);
-    const uint16x8_t s1 = vaddl_u8(L2, L3);
-    const uint16x8_t s2 = vaddl_u8(L4, L5);
-    const uint16x8_t s3 = vaddl_u8(L6, L7);
+    const uint16x8_t L0 = vmovl_u8(vld1_u8(dst + 0 * BPS - 1));
+    const uint16x8_t L1 = vmovl_u8(vld1_u8(dst + 1 * BPS - 1));
+    const uint16x8_t L2 = vmovl_u8(vld1_u8(dst + 2 * BPS - 1));
+    const uint16x8_t L3 = vmovl_u8(vld1_u8(dst + 3 * BPS - 1));
+    const uint16x8_t L4 = vmovl_u8(vld1_u8(dst + 4 * BPS - 1));
+    const uint16x8_t L5 = vmovl_u8(vld1_u8(dst + 5 * BPS - 1));
+    const uint16x8_t L6 = vmovl_u8(vld1_u8(dst + 6 * BPS - 1));
+    const uint16x8_t L7 = vmovl_u8(vld1_u8(dst + 7 * BPS - 1));
+    const uint16x8_t s0 = vaddq_u16(L0, L1);
+    const uint16x8_t s1 = vaddq_u16(L2, L3);
+    const uint16x8_t s2 = vaddq_u16(L4, L5);
+    const uint16x8_t s3 = vaddq_u16(L6, L7);
    const uint16x8_t s01 = vaddq_u16(s0, s1);
    const uint16x8_t s23 = vaddq_u16(s2, s3);
    sum_left = vaddq_u16(s01, s23);
@@ -1511,34 +1512,29 @@ static WEBP_INLINE void DC16_NEON(uint8_t* dst, int do_top, int do_left) {

  if (do_top) {
    const uint8x16_t A = vld1q_u8(dst - BPS);  // top row
-#if defined(__aarch64__)
-    const uint16_t p3 = vaddlvq_u8(A);
-    sum_top = vdupq_n_u16(p3);
-#else
    const uint16x8_t p0 = vpaddlq_u8(A);  // cascading summation of the top
    const uint16x4_t p1 = vadd_u16(vget_low_u16(p0), vget_high_u16(p0));
    const uint16x4_t p2 = vpadd_u16(p1, p1);
    const uint16x4_t p3 = vpadd_u16(p2, p2);
    sum_top = vcombine_u16(p3, p3);
-#endif
  }

  if (do_left) {
    int i;
    sum_left = vdupq_n_u16(0);
    for (i = 0; i < 16; i += 8) {
-      const uint8x8_t L0 = vld1_u8(dst + (i + 0) * BPS - 1);
-      const uint8x8_t L1 = vld1_u8(dst + (i + 1) * BPS - 1);
-      const uint8x8_t L2 = vld1_u8(dst + (i + 2) * BPS - 1);
-      const uint8x8_t L3 = vld1_u8(dst + (i + 3) * BPS - 1);
-      const uint8x8_t L4 = vld1_u8(dst + (i + 4) * BPS - 1);
-      const uint8x8_t L5 = vld1_u8(dst + (i + 5) * BPS - 1);
-      const uint8x8_t L6 = vld1_u8(dst + (i + 6) * BPS - 1);
-      const uint8x8_t L7 = vld1_u8(dst + (i + 7) * BPS - 1);
-      const uint16x8_t s0 = vaddl_u8(L0, L1);
-      const uint16x8_t s1 = vaddl_u8(L2, L3);
-      const uint16x8_t s2 = vaddl_u8(L4, L5);
-      const uint16x8_t s3 = vaddl_u8(L6, L7);
+      const uint16x8_t L0 = vmovl_u8(vld1_u8(dst + (i + 0) * BPS - 1));
+      const uint16x8_t L1 = vmovl_u8(vld1_u8(dst + (i + 1) * BPS - 1));
+      const uint16x8_t L2 = vmovl_u8(vld1_u8(dst + (i + 2) * BPS - 1));
+      const uint16x8_t L3 = vmovl_u8(vld1_u8(dst + (i + 3) * BPS - 1));
+      const uint16x8_t L4 = vmovl_u8(vld1_u8(dst + (i + 4) * BPS - 1));
+      const uint16x8_t L5 = vmovl_u8(vld1_u8(dst + (i + 5) * BPS - 1));
+      const uint16x8_t L6 = vmovl_u8(vld1_u8(dst + (i + 6) * BPS - 1));
+      const uint16x8_t L7 = vmovl_u8(vld1_u8(dst + (i + 7) * BPS - 1));
+      const uint16x8_t s0 = vaddq_u16(L0, L1);
+      const uint16x8_t s1 = vaddq_u16(L2, L3);
+      const uint16x8_t s2 = vaddq_u16(L4, L5);
+      const uint16x8_t s3 = vaddq_u16(L6, L7);
      const uint16x8_t s01 = vaddq_u16(s0, s1);
      const uint16x8_t s23 = vaddq_u16(s2, s3);
      const uint16x8_t sum = vaddq_u16(s01, s23);
@@ -51,7 +51,9 @@ extern "C" {
 # define __has_builtin(x) 0
 #endif

-#if !defined(HAVE_CONFIG_H)
+// for now, none of the optimizations below are available in emscripten
+#if !defined(EMSCRIPTEN)
+
 #if defined(_MSC_VER) && _MSC_VER > 1310 && \
    (defined(_M_X64) || defined(_M_IX86))
 #define WEBP_MSC_SSE2  // Visual C++ SSE2 targets
@@ -61,7 +63,6 @@ extern "C" {
    (defined(_M_X64) || defined(_M_IX86))
 #define WEBP_MSC_SSE41  // Visual C++ SSE4.1 targets
 #endif
-#endif

 // WEBP_HAVE_* are used to indicate the presence of the instruction set in dsp
 // files without intrinsics, allowing the corresponding Init() to be called.
@@ -75,9 +76,6 @@ extern "C" {
 #define WEBP_USE_SSE41
 #endif

-#undef WEBP_MSC_SSE41
-#undef WEBP_MSC_SSE2
-
 // The intrinsics currently cause compiler errors with arm-nacl-gcc and the
 // inline assembly would need to be modified for use with Native Client.
 #if (defined(__ARM_NEON__) || \
@@ -112,6 +110,8 @@ extern "C" {
 #define WEBP_USE_MSA
 #endif

+#endif  /* EMSCRIPTEN */
+
 #ifndef WEBP_DSP_OMIT_C_CODE
 #define WEBP_DSP_OMIT_C_CODE 1
 #endif
@@ -193,12 +193,6 @@ extern "C" {
 #endif
 #endif

-// If 'ptr' is NULL, returns NULL. Otherwise returns 'ptr + off'.
-// Prevents undefined behavior sanitizer nullptr-with-nonzero-offset warning.
-#if !defined(WEBP_OFFSET_PTR)
-#define WEBP_OFFSET_PTR(ptr, off) (((ptr) == NULL) ? NULL : ((ptr) + (off)))
-#endif
-
 // Regularize the definition of WEBP_SWAP_16BIT_CSP (backward compatibility)
 #if !defined(WEBP_SWAP_16BIT_CSP)
 #define WEBP_SWAP_16BIT_CSP 0
@@ -638,8 +632,6 @@ extern void (*WebPPackRGB)(const uint8_t* r, const uint8_t* g, const uint8_t* b,
 extern int (*WebPHasAlpha8b)(const uint8_t* src, int length);
 // This function returns true if src[4*i] contains a value different from 0xff.
 extern int (*WebPHasAlpha32b)(const uint8_t* src, int length);
-// replaces transparent values in src[] by 'color'.
-extern void (*WebPAlphaReplace)(uint32_t* src, int length, uint32_t color);

 // To be called first before using the above.
 void WebPInitAlphaProcessing(void);
@@ -107,62 +107,62 @@ static WEBP_INLINE uint32_t Select(uint32_t a, uint32_t b, uint32_t c) {
 //------------------------------------------------------------------------------
 // Predictors

-uint32_t VP8LPredictor0_C(uint32_t left, const uint32_t* const top) {
+static uint32_t Predictor0_C(uint32_t left, const uint32_t* const top) {
  (void)top;
  (void)left;
  return ARGB_BLACK;
 }
-uint32_t VP8LPredictor1_C(uint32_t left, const uint32_t* const top) {
+static uint32_t Predictor1_C(uint32_t left, const uint32_t* const top) {
  (void)top;
  return left;
 }
-uint32_t VP8LPredictor2_C(uint32_t left, const uint32_t* const top) {
+static uint32_t Predictor2_C(uint32_t left, const uint32_t* const top) {
  (void)left;
  return top[0];
 }
-uint32_t VP8LPredictor3_C(uint32_t left, const uint32_t* const top) {
+static uint32_t Predictor3_C(uint32_t left, const uint32_t* const top) {
  (void)left;
  return top[1];
 }
-uint32_t VP8LPredictor4_C(uint32_t left, const uint32_t* const top) {
+static uint32_t Predictor4_C(uint32_t left, const uint32_t* const top) {
  (void)left;
  return top[-1];
 }
-uint32_t VP8LPredictor5_C(uint32_t left, const uint32_t* const top) {
+static uint32_t Predictor5_C(uint32_t left, const uint32_t* const top) {
  const uint32_t pred = Average3(left, top[0], top[1]);
  return pred;
 }
-uint32_t VP8LPredictor6_C(uint32_t left, const uint32_t* const top) {
+static uint32_t Predictor6_C(uint32_t left, const uint32_t* const top) {
  const uint32_t pred = Average2(left, top[-1]);
  return pred;
 }
-uint32_t VP8LPredictor7_C(uint32_t left, const uint32_t* const top) {
+static uint32_t Predictor7_C(uint32_t left, const uint32_t* const top) {
  const uint32_t pred = Average2(left, top[0]);
  return pred;
 }
-uint32_t VP8LPredictor8_C(uint32_t left, const uint32_t* const top) {
+static uint32_t Predictor8_C(uint32_t left, const uint32_t* const top) {
  const uint32_t pred = Average2(top[-1], top[0]);
  (void)left;
  return pred;
 }
-uint32_t VP8LPredictor9_C(uint32_t left, const uint32_t* const top) {
+static uint32_t Predictor9_C(uint32_t left, const uint32_t* const top) {
  const uint32_t pred = Average2(top[0], top[1]);
  (void)left;
  return pred;
 }
-uint32_t VP8LPredictor10_C(uint32_t left, const uint32_t* const top) {
+static uint32_t Predictor10_C(uint32_t left, const uint32_t* const top) {
  const uint32_t pred = Average4(left, top[-1], top[0], top[1]);
  return pred;
 }
-uint32_t VP8LPredictor11_C(uint32_t left, const uint32_t* const top) {
+static uint32_t Predictor11_C(uint32_t left, const uint32_t* const top) {
  const uint32_t pred = Select(top[0], left, top[-1]);
  return pred;
 }
-uint32_t VP8LPredictor12_C(uint32_t left, const uint32_t* const top) {
+static uint32_t Predictor12_C(uint32_t left, const uint32_t* const top) {
  const uint32_t pred = ClampedAddSubtractFull(left, top[0], top[-1]);
  return pred;
 }
-uint32_t VP8LPredictor13_C(uint32_t left, const uint32_t* const top) {
+static uint32_t Predictor13_C(uint32_t left, const uint32_t* const top) {
  const uint32_t pred = ClampedAddSubtractHalf(left, top[0], top[-1]);
  return pred;
 }
@@ -182,18 +182,18 @@ static void PredictorAdd1_C(const uint32_t* in, const uint32_t* upper,
    out[i] = left = VP8LAddPixels(in[i], left);
  }
 }
-GENERATE_PREDICTOR_ADD(VP8LPredictor2_C, PredictorAdd2_C)
-GENERATE_PREDICTOR_ADD(VP8LPredictor3_C, PredictorAdd3_C)
-GENERATE_PREDICTOR_ADD(VP8LPredictor4_C, PredictorAdd4_C)
-GENERATE_PREDICTOR_ADD(VP8LPredictor5_C, PredictorAdd5_C)
-GENERATE_PREDICTOR_ADD(VP8LPredictor6_C, PredictorAdd6_C)
-GENERATE_PREDICTOR_ADD(VP8LPredictor7_C, PredictorAdd7_C)
-GENERATE_PREDICTOR_ADD(VP8LPredictor8_C, PredictorAdd8_C)
-GENERATE_PREDICTOR_ADD(VP8LPredictor9_C, PredictorAdd9_C)
-GENERATE_PREDICTOR_ADD(VP8LPredictor10_C, PredictorAdd10_C)
-GENERATE_PREDICTOR_ADD(VP8LPredictor11_C, PredictorAdd11_C)
-GENERATE_PREDICTOR_ADD(VP8LPredictor12_C, PredictorAdd12_C)
-GENERATE_PREDICTOR_ADD(VP8LPredictor13_C, PredictorAdd13_C)
+GENERATE_PREDICTOR_ADD(Predictor2_C, PredictorAdd2_C)
+GENERATE_PREDICTOR_ADD(Predictor3_C, PredictorAdd3_C)
+GENERATE_PREDICTOR_ADD(Predictor4_C, PredictorAdd4_C)
+GENERATE_PREDICTOR_ADD(Predictor5_C, PredictorAdd5_C)
+GENERATE_PREDICTOR_ADD(Predictor6_C, PredictorAdd6_C)
+GENERATE_PREDICTOR_ADD(Predictor7_C, PredictorAdd7_C)
+GENERATE_PREDICTOR_ADD(Predictor8_C, PredictorAdd8_C)
+GENERATE_PREDICTOR_ADD(Predictor9_C, PredictorAdd9_C)
+GENERATE_PREDICTOR_ADD(Predictor10_C, PredictorAdd10_C)
+GENERATE_PREDICTOR_ADD(Predictor11_C, PredictorAdd11_C)
+GENERATE_PREDICTOR_ADD(Predictor12_C, PredictorAdd12_C)
+GENERATE_PREDICTOR_ADD(Predictor13_C, PredictorAdd13_C)

 //------------------------------------------------------------------------------

@@ -562,6 +562,7 @@ VP8LPredictorFunc VP8LPredictors[16];

 // exposed plain-C implementations
 VP8LPredictorAddSubFunc VP8LPredictorsAdd_C[16];
+VP8LPredictorFunc VP8LPredictors_C[16];

 VP8LTransformColorInverseFunc VP8LTransformColorInverse;

@@ -599,7 +600,8 @@ extern void VP8LDspInitMSA(void);
 } while (0);

 WEBP_DSP_INIT_FUNC(VP8LDspInit) {
-  COPY_PREDICTOR_ARRAY(VP8LPredictor, VP8LPredictors)
+  COPY_PREDICTOR_ARRAY(Predictor, VP8LPredictors)
+  COPY_PREDICTOR_ARRAY(Predictor, VP8LPredictors_C)
  COPY_PREDICTOR_ARRAY(PredictorAdd, VP8LPredictorsAdd)
  COPY_PREDICTOR_ARRAY(PredictorAdd, VP8LPredictorsAdd_C)

@@ -30,22 +30,7 @@ extern "C" {

 typedef uint32_t (*VP8LPredictorFunc)(uint32_t left, const uint32_t* const top);
 extern VP8LPredictorFunc VP8LPredictors[16];
-
-uint32_t VP8LPredictor0_C(uint32_t left, const uint32_t* const top);
-uint32_t VP8LPredictor1_C(uint32_t left, const uint32_t* const top);
-uint32_t VP8LPredictor2_C(uint32_t left, const uint32_t* const top);
-uint32_t VP8LPredictor3_C(uint32_t left, const uint32_t* const top);
-uint32_t VP8LPredictor4_C(uint32_t left, const uint32_t* const top);
-uint32_t VP8LPredictor5_C(uint32_t left, const uint32_t* const top);
-uint32_t VP8LPredictor6_C(uint32_t left, const uint32_t* const top);
-uint32_t VP8LPredictor7_C(uint32_t left, const uint32_t* const top);
-uint32_t VP8LPredictor8_C(uint32_t left, const uint32_t* const top);
-uint32_t VP8LPredictor9_C(uint32_t left, const uint32_t* const top);
-uint32_t VP8LPredictor10_C(uint32_t left, const uint32_t* const top);
-uint32_t VP8LPredictor11_C(uint32_t left, const uint32_t* const top);
-uint32_t VP8LPredictor12_C(uint32_t left, const uint32_t* const top);
-uint32_t VP8LPredictor13_C(uint32_t left, const uint32_t* const top);
-
+extern VP8LPredictorFunc VP8LPredictors_C[16];
 // These Add/Sub function expects upper[-1] and out[-1] to be readable.
 typedef void (*VP8LPredictorAddSubFunc)(const uint32_t* in,
                                        const uint32_t* upper, int num_pixels,
@@ -184,6 +184,19 @@ static void PREDICTOR_ADD(const uint32_t* in, const uint32_t* upper, \
  }                                                                  \
 }

+// It subtracts the prediction from the input pixel and stores the residual
+// in the output pixel.
+#define GENERATE_PREDICTOR_SUB(PREDICTOR, PREDICTOR_SUB)             \
+static void PREDICTOR_SUB(const uint32_t* in, const uint32_t* upper, \
+                          int num_pixels, uint32_t* out) {           \
+  int x;                                                             \
+  assert(upper != NULL);                                             \
+  for (x = 0; x < num_pixels; ++x) {                                 \
+    const uint32_t pred = (PREDICTOR)(in[x - 1], upper + x);         \
+    out[x] = VP8LSubPixels(in[x], pred);                             \
+  }                                                                  \
+}
+
 #ifdef __cplusplus
 }    // extern "C"
 #endif
@@ -702,6 +702,140 @@ void VP8LHistogramAdd(const VP8LHistogram* const a,
 //------------------------------------------------------------------------------
 // Image transforms.

+static WEBP_INLINE uint32_t Average2(uint32_t a0, uint32_t a1) {
+  return (((a0 ^ a1) & 0xfefefefeu) >> 1) + (a0 & a1);
+}
+
+static WEBP_INLINE uint32_t Average3(uint32_t a0, uint32_t a1, uint32_t a2) {
+  return Average2(Average2(a0, a2), a1);
+}
+
+static WEBP_INLINE uint32_t Average4(uint32_t a0, uint32_t a1,
+                                     uint32_t a2, uint32_t a3) {
+  return Average2(Average2(a0, a1), Average2(a2, a3));
+}
+
+static WEBP_INLINE uint32_t Clip255(uint32_t a) {
+  if (a < 256) {
+    return a;
+  }
+  // return 0, when a is a negative integer.
+  // return 255, when a is positive.
+  return ~a >> 24;
+}
+
+static WEBP_INLINE int AddSubtractComponentFull(int a, int b, int c) {
+  return Clip255(a + b - c);
+}
+
+static WEBP_INLINE uint32_t ClampedAddSubtractFull(uint32_t c0, uint32_t c1,
+                                                   uint32_t c2) {
+  const int a = AddSubtractComponentFull(c0 >> 24, c1 >> 24, c2 >> 24);
+  const int r = AddSubtractComponentFull((c0 >> 16) & 0xff,
+                                         (c1 >> 16) & 0xff,
+                                         (c2 >> 16) & 0xff);
+  const int g = AddSubtractComponentFull((c0 >> 8) & 0xff,
+                                         (c1 >> 8) & 0xff,
+                                         (c2 >> 8) & 0xff);
+  const int b = AddSubtractComponentFull(c0 & 0xff, c1 & 0xff, c2 & 0xff);
+  return ((uint32_t)a << 24) | (r << 16) | (g << 8) | b;
+}
+
+static WEBP_INLINE int AddSubtractComponentHalf(int a, int b) {
+  return Clip255(a + (a - b) / 2);
+}
+
+static WEBP_INLINE uint32_t ClampedAddSubtractHalf(uint32_t c0, uint32_t c1,
+                                                   uint32_t c2) {
+  const uint32_t ave = Average2(c0, c1);
+  const int a = AddSubtractComponentHalf(ave >> 24, c2 >> 24);
+  const int r = AddSubtractComponentHalf((ave >> 16) & 0xff, (c2 >> 16) & 0xff);
+  const int g = AddSubtractComponentHalf((ave >> 8) & 0xff, (c2 >> 8) & 0xff);
+  const int b = AddSubtractComponentHalf((ave >> 0) & 0xff, (c2 >> 0) & 0xff);
+  return ((uint32_t)a << 24) | (r << 16) | (g << 8) | b;
+}
+
+// gcc-4.9 on ARM generates incorrect code in Select() when Sub3() is inlined.
+#if defined(__arm__) && \
+    (LOCAL_GCC_VERSION == 0x409 || LOCAL_GCC_VERSION == 0x408)
+# define LOCAL_INLINE __attribute__ ((noinline))
+#else
+# define LOCAL_INLINE WEBP_INLINE
+#endif
+
+static LOCAL_INLINE int Sub3(int a, int b, int c) {
+  const int pb = b - c;
+  const int pa = a - c;
+  return abs(pb) - abs(pa);
+}
+
+#undef LOCAL_INLINE
+
+static WEBP_INLINE uint32_t Select(uint32_t a, uint32_t b, uint32_t c) {
+  const int pa_minus_pb =
+      Sub3((a >> 24)       , (b >> 24)       , (c >> 24)       ) +
+      Sub3((a >> 16) & 0xff, (b >> 16) & 0xff, (c >> 16) & 0xff) +
+      Sub3((a >>  8) & 0xff, (b >>  8) & 0xff, (c >>  8) & 0xff) +
+      Sub3((a      ) & 0xff, (b      ) & 0xff, (c      ) & 0xff);
+  return (pa_minus_pb <= 0) ? a : b;
+}
+
+//------------------------------------------------------------------------------
+// Predictors
+
+static uint32_t Predictor2(uint32_t left, const uint32_t* const top) {
+  (void)left;
+  return top[0];
+}
+static uint32_t Predictor3(uint32_t left, const uint32_t* const top) {
+  (void)left;
+  return top[1];
+}
+static uint32_t Predictor4(uint32_t left, const uint32_t* const top) {
+  (void)left;
+  return top[-1];
+}
+static uint32_t Predictor5(uint32_t left, const uint32_t* const top) {
+  const uint32_t pred = Average3(left, top[0], top[1]);
+  return pred;
+}
+static uint32_t Predictor6(uint32_t left, const uint32_t* const top) {
+  const uint32_t pred = Average2(left, top[-1]);
+  return pred;
+}
+static uint32_t Predictor7(uint32_t left, const uint32_t* const top) {
+  const uint32_t pred = Average2(left, top[0]);
+  return pred;
+}
+static uint32_t Predictor8(uint32_t left, const uint32_t* const top) {
+  const uint32_t pred = Average2(top[-1], top[0]);
+  (void)left;
+  return pred;
+}
+static uint32_t Predictor9(uint32_t left, const uint32_t* const top) {
+  const uint32_t pred = Average2(top[0], top[1]);
+  (void)left;
+  return pred;
+}
+static uint32_t Predictor10(uint32_t left, const uint32_t* const top) {
+  const uint32_t pred = Average4(left, top[-1], top[0], top[1]);
+  return pred;
+}
+static uint32_t Predictor11(uint32_t left, const uint32_t* const top) {
+  const uint32_t pred = Select(top[0], left, top[-1]);
+  return pred;
+}
+static uint32_t Predictor12(uint32_t left, const uint32_t* const top) {
+  const uint32_t pred = ClampedAddSubtractFull(left, top[0], top[-1]);
+  return pred;
+}
+static uint32_t Predictor13(uint32_t left, const uint32_t* const top) {
+  const uint32_t pred = ClampedAddSubtractHalf(left, top[0], top[-1]);
+  return pred;
+}
+
+//------------------------------------------------------------------------------
+
 static void PredictorSub0_C(const uint32_t* in, const uint32_t* upper,
                            int num_pixels, uint32_t* out) {
  int i;
@@ -716,33 +850,18 @@ static void PredictorSub1_C(const uint32_t* in, const uint32_t* upper,
  (void)upper;
 }

-// It subtracts the prediction from the input pixel and stores the residual
-// in the output pixel.
-#define GENERATE_PREDICTOR_SUB(PREDICTOR_I)                                \
-static void PredictorSub##PREDICTOR_I##_C(const uint32_t* in,              \
-                                          const uint32_t* upper,           \
-                                          int num_pixels, uint32_t* out) { \
-  int x;                                                                   \
-  assert(upper != NULL);                                                   \
-  for (x = 0; x < num_pixels; ++x) {                                       \
-    const uint32_t pred =                                                  \
-        VP8LPredictor##PREDICTOR_I##_C(in[x - 1], upper + x);              \
-    out[x] = VP8LSubPixels(in[x], pred);                                   \
-  }                                                                        \
-}
-
-GENERATE_PREDICTOR_SUB(2)
-GENERATE_PREDICTOR_SUB(3)
-GENERATE_PREDICTOR_SUB(4)
-GENERATE_PREDICTOR_SUB(5)
-GENERATE_PREDICTOR_SUB(6)
-GENERATE_PREDICTOR_SUB(7)
-GENERATE_PREDICTOR_SUB(8)
-GENERATE_PREDICTOR_SUB(9)
-GENERATE_PREDICTOR_SUB(10)
-GENERATE_PREDICTOR_SUB(11)
-GENERATE_PREDICTOR_SUB(12)
-GENERATE_PREDICTOR_SUB(13)
+GENERATE_PREDICTOR_SUB(Predictor2, PredictorSub2_C)
+GENERATE_PREDICTOR_SUB(Predictor3, PredictorSub3_C)
+GENERATE_PREDICTOR_SUB(Predictor4, PredictorSub4_C)
+GENERATE_PREDICTOR_SUB(Predictor5, PredictorSub5_C)
+GENERATE_PREDICTOR_SUB(Predictor6, PredictorSub6_C)
+GENERATE_PREDICTOR_SUB(Predictor7, PredictorSub7_C)
+GENERATE_PREDICTOR_SUB(Predictor8, PredictorSub8_C)
+GENERATE_PREDICTOR_SUB(Predictor9, PredictorSub9_C)
+GENERATE_PREDICTOR_SUB(Predictor10, PredictorSub10_C)
+GENERATE_PREDICTOR_SUB(Predictor11, PredictorSub11_C)
+GENERATE_PREDICTOR_SUB(Predictor12, PredictorSub12_C)
+GENERATE_PREDICTOR_SUB(Predictor13, PredictorSub13_C)

 //------------------------------------------------------------------------------

@@ -249,7 +249,6 @@ static void AddVectorEq_SSE2(const uint32_t* a, uint32_t* out, int size) {
    }                                  \
  } while (0)

-#if !(defined(__i386__) || defined(_M_IX86))
 static float CombinedShannonEntropy_SSE2(const int X[256], const int Y[256]) {
  int i;
  double retval = 0.;
@@ -301,8 +300,6 @@ static float CombinedShannonEntropy_SSE2(const int X[256], const int Y[256]) {
  retval += VP8LFastSLog2(sumX) + VP8LFastSLog2(sumXY);
  return (float)retval;
 }
-#endif  // !(defined(__i386__) || defined(_M_IX86))
-
 #undef ANALYZE_X_OR_Y
 #undef ANALYZE_XY

@@ -463,22 +460,20 @@ static void PredictorSub0_SSE2(const uint32_t* in, const uint32_t* upper,
  (void)upper;
 }

-#define GENERATE_PREDICTOR_1(X, IN)                                         \
-  static void PredictorSub##X##_SSE2(const uint32_t* const in,              \
-                                     const uint32_t* const upper,           \
-                                     int num_pixels, uint32_t* const out) { \
-    int i;                                                                  \
-    for (i = 0; i + 4 <= num_pixels; i += 4) {                              \
-      const __m128i src = _mm_loadu_si128((const __m128i*)&in[i]);          \
-      const __m128i pred = _mm_loadu_si128((const __m128i*)&(IN));          \
-      const __m128i res = _mm_sub_epi8(src, pred);                          \
-      _mm_storeu_si128((__m128i*)&out[i], res);                             \
-    }                                                                       \
-    if (i != num_pixels) {                                                  \
-      VP8LPredictorsSub_C[(X)](in + i, WEBP_OFFSET_PTR(upper, i),           \
-                               num_pixels - i, out + i);                    \
-    }                                                                       \
-  }
+#define GENERATE_PREDICTOR_1(X, IN)                                           \
+static void PredictorSub##X##_SSE2(const uint32_t* in, const uint32_t* upper, \
+                                   int num_pixels, uint32_t* out) {           \
+  int i;                                                                      \
+  for (i = 0; i + 4 <= num_pixels; i += 4) {                                  \
+    const __m128i src = _mm_loadu_si128((const __m128i*)&in[i]);              \
+    const __m128i pred = _mm_loadu_si128((const __m128i*)&(IN));              \
+    const __m128i res = _mm_sub_epi8(src, pred);                              \
+    _mm_storeu_si128((__m128i*)&out[i], res);                                 \
+  }                                                                           \
+  if (i != num_pixels) {                                                      \
+    VP8LPredictorsSub_C[(X)](in + i, upper + i, num_pixels - i, out + i);     \
+  }                                                                           \
+}

 GENERATE_PREDICTOR_1(1, in[i - 1])       // Predictor1: L
 GENERATE_PREDICTOR_1(2, upper[i])        // Predictor2: T
@@ -662,12 +657,7 @@ WEBP_TSAN_IGNORE_FUNCTION void VP8LEncDspInitSSE2(void) {
  VP8LCollectColorRedTransforms = CollectColorRedTransforms_SSE2;
  VP8LAddVector = AddVector_SSE2;
  VP8LAddVectorEq = AddVectorEq_SSE2;
-  // TODO(https://crbug.com/webp/499): this function produces different results
-  // from the C code due to use of double/float resulting in output differences
-  // when compared to -noasm.
-#if !(defined(__i386__) || defined(_M_IX86))
  VP8LCombinedShannonEntropy = CombinedShannonEntropy_SSE2;
-#endif
  VP8LVectorMismatch = VectorMismatch_SSE2;
  VP8LBundleColorMap = BundleColorMap_SSE2;

@@ -126,6 +126,16 @@ static void InitHistogram(VP8Histogram* const histo) {
  histo->last_non_zero = 1;
 }

+static void MergeHistograms(const VP8Histogram* const in,
+                            VP8Histogram* const out) {
+  if (in->max_value > out->max_value) {
+    out->max_value = in->max_value;
+  }
+  if (in->last_non_zero > out->last_non_zero) {
+    out->last_non_zero = in->last_non_zero;
+  }
+}
+
 //------------------------------------------------------------------------------
 // Simplified k-Means, to assign Nb segments based on alpha-histogram

@@ -275,6 +285,49 @@ static int FastMBAnalyze(VP8EncIterator* const it) {
  return 0;
 }

+static int MBAnalyzeBestIntra4Mode(VP8EncIterator* const it,
+                                   int best_alpha) {
+  uint8_t modes[16];
+  const int max_mode = MAX_INTRA4_MODE;
+  int i4_alpha;
+  VP8Histogram total_histo;
+  int cur_histo = 0;
+  InitHistogram(&total_histo);
+
+  VP8IteratorStartI4(it);
+  do {
+    int mode;
+    int best_mode_alpha = DEFAULT_ALPHA;
+    VP8Histogram histos[2];
+    const uint8_t* const src = it->yuv_in_ + Y_OFF_ENC + VP8Scan[it->i4_];
+
+    VP8MakeIntra4Preds(it);
+    for (mode = 0; mode < max_mode; ++mode) {
+      int alpha;
+
+      InitHistogram(&histos[cur_histo]);
+      VP8CollectHistogram(src, it->yuv_p_ + VP8I4ModeOffsets[mode],
+                          0, 1, &histos[cur_histo]);
+      alpha = GetAlpha(&histos[cur_histo]);
+      if (IS_BETTER_ALPHA(alpha, best_mode_alpha)) {
+        best_mode_alpha = alpha;
+        modes[it->i4_] = mode;
+        cur_histo ^= 1;   // keep track of best histo so far.
+      }
+    }
+    // accumulate best histogram
+    MergeHistograms(&histos[cur_histo ^ 1], &total_histo);
+    // Note: we reuse the original samples for predictors
+  } while (VP8IteratorRotateI4(it, it->yuv_in_ + Y_OFF_ENC));
+
+  i4_alpha = GetAlpha(&total_histo);
+  if (IS_BETTER_ALPHA(i4_alpha, best_alpha)) {
+    VP8SetIntra4Mode(it, modes);
+    best_alpha = i4_alpha;
+  }
+  return best_alpha;
+}
+
 static int MBAnalyzeBestUVMode(VP8EncIterator* const it) {
  int best_alpha = DEFAULT_ALPHA;
  int smallest_alpha = 0;
@@ -318,6 +371,13 @@ static void MBAnalyze(VP8EncIterator* const it,
    best_alpha = FastMBAnalyze(it);
  } else {
    best_alpha = MBAnalyzeBestIntra16Mode(it);
+    if (enc->method_ >= 5) {
+      // We go and make a fast decision for intra4/intra16.
+      // It's usually not a good and definitive pick, but helps seeding the
+      // stats about level bit-cost.
+      // TODO(skal): improve criterion.
+      best_alpha = MBAnalyzeBestIntra4Mode(it, best_alpha);
+    }
  }
  best_uv_alpha = MBAnalyzeBestUVMode(it);

@@ -11,14 +11,13 @@
 //

 #include <assert.h>
-#include <float.h>
 #include <math.h>

-#include "src/dsp/dsp.h"
-#include "src/dsp/lossless.h"
-#include "src/dsp/lossless_common.h"
 #include "src/enc/backward_references_enc.h"
 #include "src/enc/histogram_enc.h"
+#include "src/dsp/lossless.h"
+#include "src/dsp/lossless_common.h"
+#include "src/dsp/dsp.h"
 #include "src/utils/color_cache_utils.h"
 #include "src/utils/utils.h"

@@ -104,20 +103,6 @@ void VP8LBackwardRefsClear(VP8LBackwardRefs* const refs) {
  }
 }

-// Swaps the content of two VP8LBackwardRefs.
-static void BackwardRefsSwap(VP8LBackwardRefs* const refs1,
-                             VP8LBackwardRefs* const refs2) {
-  const int point_to_refs1 =
-      (refs1->tail_ != NULL && refs1->tail_ == &refs1->refs_);
-  const int point_to_refs2 =
-      (refs2->tail_ != NULL && refs2->tail_ == &refs2->refs_);
-  const VP8LBackwardRefs tmp = *refs1;
-  *refs1 = *refs2;
-  *refs2 = tmp;
-  if (point_to_refs2) refs1->tail_ = &refs1->refs_;
-  if (point_to_refs1) refs2->tail_ = &refs2->refs_;
-}
-
 void VP8LBackwardRefsInit(VP8LBackwardRefs* const refs, int block_size) {
  assert(refs != NULL);
  memset(refs, 0, sizeof(*refs));
@@ -169,22 +154,6 @@ static PixOrCopyBlock* BackwardRefsNewBlock(VP8LBackwardRefs* const refs) {
  return b;
 }

-// Return 1 on success, 0 on error.
-static int BackwardRefsClone(const VP8LBackwardRefs* const from,
-                             VP8LBackwardRefs* const to) {
-  const PixOrCopyBlock* block_from = from->refs_;
-  VP8LClearBackwardRefs(to);
-  while (block_from != NULL) {
-    PixOrCopyBlock* const block_to = BackwardRefsNewBlock(to);
-    if (block_to == NULL) return 0;
-    memcpy(block_to->start_, block_from->start_,
-           block_from->size_ * sizeof(PixOrCopy));
-    block_to->size_ = block_from->size_;
-    block_from = block_from->next_;
-  }
-  return 1;
-}
-
 extern void VP8LBackwardRefsCursorAdd(VP8LBackwardRefs* const refs,
                                      const PixOrCopy v);
 void VP8LBackwardRefsCursorAdd(VP8LBackwardRefs* const refs,
@@ -784,18 +753,12 @@ static int CalculateBestCacheSize(const uint32_t* argb, int quality,
        }
      }
    } else {
-      int code, extra_bits, extra_bits_value;
      // We should compute the contribution of the (distance,length)
      // histograms but those are the same independently from the cache size.
      // As those constant contributions are in the end added to the other
-      // histogram contributions, we can ignore them, except for the length
-      // prefix that is part of the literal_ histogram.
+      // histogram contributions, we can safely ignore them.
      int len = PixOrCopyLength(v);
      uint32_t argb_prev = *argb ^ 0xffffffffu;
-      VP8LPrefixEncode(len, &code, &extra_bits, &extra_bits_value);
-      for (i = 0; i <= cache_bits_max; ++i) {
-        ++histos[i]->literal_[NUM_LITERAL_CODES + code];
-      }
      // Update the color caches.
      do {
        if (*argb != argb_prev) {
@@ -879,21 +842,16 @@ extern int VP8LBackwardReferencesTraceBackwards(
    int xsize, int ysize, const uint32_t* const argb, int cache_bits,
    const VP8LHashChain* const hash_chain,
    const VP8LBackwardRefs* const refs_src, VP8LBackwardRefs* const refs_dst);
-static int GetBackwardReferences(int width, int height,
-                                 const uint32_t* const argb, int quality,
-                                 int lz77_types_to_try, int cache_bits_max,
-                                 int do_no_cache,
-                                 const VP8LHashChain* const hash_chain,
-                                 VP8LBackwardRefs* const refs,
-                                 int* const cache_bits_best) {
+static VP8LBackwardRefs* GetBackwardReferences(
+    int width, int height, const uint32_t* const argb, int quality,
+    int lz77_types_to_try, int* const cache_bits,
+    const VP8LHashChain* const hash_chain, VP8LBackwardRefs* best,
+    VP8LBackwardRefs* worst) {
+  const int cache_bits_initial = *cache_bits;
+  double bit_cost_best = -1;
  VP8LHistogram* histo = NULL;
-  int i, lz77_type;
-  // Index 0 is for a color cache, index 1 for no cache (if needed).
-  int lz77_types_best[2] = {0, 0};
-  double bit_costs_best[2] = {DBL_MAX, DBL_MAX};
+  int lz77_type, lz77_type_best = 0;
  VP8LHashChain hash_chain_box;
-  VP8LBackwardRefs* const refs_tmp = &refs[do_no_cache ? 2 : 1];
-  int status = 0;
  memset(&hash_chain_box, 0, sizeof(hash_chain_box));

  histo = VP8LAllocateHistogram(MAX_COLOR_CACHE_BITS);
@@ -902,129 +860,86 @@ static int GetBackwardReferences(int width, int height,
  for (lz77_type = 1; lz77_types_to_try;
       lz77_types_to_try &= ~lz77_type, lz77_type <<= 1) {
    int res = 0;
-    double bit_cost = 0.;
+    double bit_cost;
+    int cache_bits_tmp = cache_bits_initial;
    if ((lz77_types_to_try & lz77_type) == 0) continue;
    switch (lz77_type) {
      case kLZ77RLE:
-        res = BackwardReferencesRle(width, height, argb, 0, refs_tmp);
+        res = BackwardReferencesRle(width, height, argb, 0, worst);
        break;
      case kLZ77Standard:
        // Compute LZ77 with no cache (0 bits), as the ideal LZ77 with a color
        // cache is not that different in practice.
-        res = BackwardReferencesLz77(width, height, argb, 0, hash_chain,
-                                     refs_tmp);
+        res = BackwardReferencesLz77(width, height, argb, 0, hash_chain, worst);
        break;
      case kLZ77Box:
        if (!VP8LHashChainInit(&hash_chain_box, width * height)) goto Error;
        res = BackwardReferencesLz77Box(width, height, argb, 0, hash_chain,
-                                        &hash_chain_box, refs_tmp);
+                                        &hash_chain_box, worst);
        break;
      default:
        assert(0);
    }
    if (!res) goto Error;

-    // Start with the no color cache case.
-    for (i = 1; i >= 0; --i) {
-      int cache_bits = (i == 1) ? 0 : cache_bits_max;
-
-      if (i == 1 && !do_no_cache) continue;
-
-      if (i == 0) {
-        // Try with a color cache.
-        if (!CalculateBestCacheSize(argb, quality, refs_tmp, &cache_bits)) {
-          goto Error;
-        }
-        if (cache_bits > 0) {
-          if (!BackwardRefsWithLocalCache(argb, cache_bits, refs_tmp)) {
-            goto Error;
-          }
-        }
-      }
-
-      if (i == 0 && do_no_cache && cache_bits == 0) {
-        // No need to re-compute bit_cost as it was computed at i == 1.
-      } else {
-        VP8LHistogramCreate(histo, refs_tmp, cache_bits);
-        bit_cost = VP8LHistogramEstimateBits(histo);
-      }
-
-      if (bit_cost < bit_costs_best[i]) {
-        if (i == 1) {
-          // Do not swap as the full cache analysis would have the wrong
-          // VP8LBackwardRefs to start with.
-          if (!BackwardRefsClone(refs_tmp, &refs[1])) goto Error;
-        } else {
-          BackwardRefsSwap(refs_tmp, &refs[0]);
-        }
-        bit_costs_best[i] = bit_cost;
-        lz77_types_best[i] = lz77_type;
-        if (i == 0) *cache_bits_best = cache_bits;
+    // Next, try with a color cache and update the references.
+    if (!CalculateBestCacheSize(argb, quality, worst, &cache_bits_tmp)) {
+      goto Error;
+    }
+    if (cache_bits_tmp > 0) {
+      if (!BackwardRefsWithLocalCache(argb, cache_bits_tmp, worst)) {
+        goto Error;
      }
    }
+
+    // Keep the best backward references.
+    VP8LHistogramCreate(histo, worst, cache_bits_tmp);
+    bit_cost = VP8LHistogramEstimateBits(histo);
+    if (lz77_type_best == 0 || bit_cost < bit_cost_best) {
+      VP8LBackwardRefs* const tmp = worst;
+      worst = best;
+      best = tmp;
+      bit_cost_best = bit_cost;
+      *cache_bits = cache_bits_tmp;
+      lz77_type_best = lz77_type;
+    }
  }
-  assert(lz77_types_best[0] > 0);
-  assert(!do_no_cache || lz77_types_best[1] > 0);
+  assert(lz77_type_best > 0);

  // Improve on simple LZ77 but only for high quality (TraceBackwards is
  // costly).
-  for (i = 1; i >= 0; --i) {
-    if (i == 1 && !do_no_cache) continue;
-    if ((lz77_types_best[i] == kLZ77Standard ||
-         lz77_types_best[i] == kLZ77Box) &&
-        quality >= 25) {
-      const VP8LHashChain* const hash_chain_tmp =
-          (lz77_types_best[i] == kLZ77Standard) ? hash_chain : &hash_chain_box;
-      const int cache_bits = (i == 1) ? 0 : *cache_bits_best;
-      if (VP8LBackwardReferencesTraceBackwards(width, height, argb, cache_bits,
-                                               hash_chain_tmp, &refs[i],
-                                               refs_tmp)) {
-        double bit_cost_trace;
-        VP8LHistogramCreate(histo, refs_tmp, cache_bits);
-        bit_cost_trace = VP8LHistogramEstimateBits(histo);
-        if (bit_cost_trace < bit_costs_best[i]) {
-          BackwardRefsSwap(refs_tmp, &refs[i]);
-        }
-      }
-    }
-
-    BackwardReferences2DLocality(width, &refs[i]);
-
-    if (i == 1 && lz77_types_best[0] == lz77_types_best[1] &&
-        *cache_bits_best == 0) {
-      // If the best cache size is 0 and we have the same best LZ77, just copy
-      // the data over and stop here.
-      if (!BackwardRefsClone(&refs[1], &refs[0])) goto Error;
-      break;
+  if ((lz77_type_best == kLZ77Standard || lz77_type_best == kLZ77Box) &&
+      quality >= 25) {
+    const VP8LHashChain* const hash_chain_tmp =
+        (lz77_type_best == kLZ77Standard) ? hash_chain : &hash_chain_box;
+    if (VP8LBackwardReferencesTraceBackwards(width, height, argb, *cache_bits,
+                                             hash_chain_tmp, best, worst)) {
+      double bit_cost_trace;
+      VP8LHistogramCreate(histo, worst, *cache_bits);
+      bit_cost_trace = VP8LHistogramEstimateBits(histo);
+      if (bit_cost_trace < bit_cost_best) best = worst;
    }
  }
-  status = 1;
+
+  BackwardReferences2DLocality(width, best);

 Error:
  VP8LHashChainClear(&hash_chain_box);
  VP8LFreeHistogram(histo);
-  return status;
+  return best;
 }

-WebPEncodingError VP8LGetBackwardReferences(
+VP8LBackwardRefs* VP8LGetBackwardReferences(
    int width, int height, const uint32_t* const argb, int quality,
-    int low_effort, int lz77_types_to_try, int cache_bits_max, int do_no_cache,
-    const VP8LHashChain* const hash_chain, VP8LBackwardRefs* const refs,
-    int* const cache_bits_best) {
+    int low_effort, int lz77_types_to_try, int* const cache_bits,
+    const VP8LHashChain* const hash_chain, VP8LBackwardRefs* const refs_tmp1,
+    VP8LBackwardRefs* const refs_tmp2) {
  if (low_effort) {
-    VP8LBackwardRefs* refs_best;
-    *cache_bits_best = cache_bits_max;
-    refs_best = GetBackwardReferencesLowEffort(
-        width, height, argb, cache_bits_best, hash_chain, refs);
-    if (refs_best == NULL) return VP8_ENC_ERROR_OUT_OF_MEMORY;
-    // Set it in first position.
-    BackwardRefsSwap(refs_best, &refs[0]);
+    return GetBackwardReferencesLowEffort(width, height, argb, cache_bits,
+                                          hash_chain, refs_tmp1);
  } else {
-    if (!GetBackwardReferences(width, height, argb, quality, lz77_types_to_try,
-                               cache_bits_max, do_no_cache, hash_chain, refs,
-                               cache_bits_best)) {
-      return VP8_ENC_ERROR_OUT_OF_MEMORY;
-    }
+    return GetBackwardReferences(width, height, argb, quality,
+                                 lz77_types_to_try, cache_bits, hash_chain,
+                                 refs_tmp1, refs_tmp2);
  }
-  return VP8_ENC_OK;
 }
@@ -16,7 +16,6 @@
 #include <assert.h>
 #include <stdlib.h>
 #include "src/webp/types.h"
-#include "src/webp/encode.h"
 #include "src/webp/format_constants.h"

 #ifdef __cplusplus
@@ -219,19 +218,14 @@ enum VP8LLZ77Type {
 // Evaluates best possible backward references for specified quality.
 // The input cache_bits to 'VP8LGetBackwardReferences' sets the maximum cache
 // bits to use (passing 0 implies disabling the local color cache).
-// The optimal cache bits is evaluated and set for the *cache_bits_best
-// parameter with the matching refs_best.
-// If do_no_cache == 0, refs is an array of 2 values and the best
-// VP8LBackwardRefs is put in the first element.
-// If do_no_cache != 0, refs is an array of 3 values and the best
-// VP8LBackwardRefs is put in the first element, the best value with no-cache in
-// the second element.
-// In both cases, the last element is used as temporary internally.
-WebPEncodingError VP8LGetBackwardReferences(
+// The optimal cache bits is evaluated and set for the *cache_bits parameter.
+// The return value is the pointer to the best of the two backward refs viz,
+// refs[0] or refs[1].
+VP8LBackwardRefs* VP8LGetBackwardReferences(
    int width, int height, const uint32_t* const argb, int quality,
-    int low_effort, int lz77_types_to_try, int cache_bits_max, int do_no_cache,
-    const VP8LHashChain* const hash_chain, VP8LBackwardRefs* const refs,
-    int* const cache_bits_best);
+    int low_effort, int lz77_types_to_try, int* const cache_bits,
+    const VP8LHashChain* const hash_chain, VP8LBackwardRefs* const refs_tmp1,
+    VP8LBackwardRefs* const refs_tmp2);

 #ifdef __cplusplus
 }
@@ -39,8 +39,6 @@ int WebPConfigInitInternal(WebPConfig* config,
  config->partitions = 0;
  config->segments = 4;
  config->pass = 1;
-  config->qmin = 0;
-  config->qmax = 100;
  config->show_compressed = 0;
  config->preprocessing = 0;
  config->autofilter = 0;
@@ -108,9 +106,6 @@ int WebPValidateConfig(const WebPConfig* config) {
  if (config->filter_type < 0 || config->filter_type > 1) return 0;
  if (config->autofilter < 0 || config->autofilter > 1) return 0;
  if (config->pass < 1 || config->pass > 10) return 0;
-  if (config->qmin < 0 || config->qmax > 100 || config->qmin > config->qmax) {
-    return 0;
-  }
  if (config->show_compressed < 0 || config->show_compressed > 1) return 0;
  if (config->preprocessing < 0 || config->preprocessing > 7) return 0;
  if (config->partitions < 0 || config->partitions > 3) return 0;
@@ -31,15 +31,10 @@
 // we allow 2k of extra head-room in PARTITION0 limit.
 #define PARTITION0_SIZE_LIMIT ((VP8_MAX_PARTITION0_SIZE - 2048ULL) << 11)

-static float Clamp(float v, float min, float max) {
-  return (v < min) ? min : (v > max) ? max : v;
-}
-
 typedef struct {  // struct for organizing convergence in either size or PSNR
  int is_first;
  float dq;
  float q, last_q;
-  float qmin, qmax;
  double value, last_value;   // PSNR or size
  double target;
  int do_size_search;
@@ -52,9 +47,7 @@ static int InitPassStats(const VP8Encoder* const enc, PassStats* const s) {

  s->is_first = 1;
  s->dq = 10.f;
-  s->qmin = 1.f * enc->config_->qmin;
-  s->qmax = 1.f * enc->config_->qmax;
-  s->q = s->last_q = Clamp(enc->config_->quality, s->qmin, s->qmax);
+  s->q = s->last_q = enc->config_->quality;
  s->target = do_size_search ? (double)target_size
            : (target_PSNR > 0.) ? target_PSNR
            : 40.;   // default, just in case
@@ -63,6 +56,10 @@ static int InitPassStats(const VP8Encoder* const enc, PassStats* const s) {
  return do_size_search;
 }

+static float Clamp(float v, float min, float max) {
+  return (v < min) ? min : (v > max) ? max : v;
+}
+
 static float ComputeNextQ(PassStats* const s) {
  float dq;
  if (s->is_first) {
@@ -78,7 +75,7 @@ static float ComputeNextQ(PassStats* const s) {
  s->dq = Clamp(dq, -30.f, 30.f);
  s->last_q = s->q;
  s->last_value = s->value;
-  s->q = Clamp(s->q + s->dq, s->qmin, s->qmax);
+  s->q = Clamp(s->q + s->dq, 0.f, 100.f);
  return s->q;
 }

@@ -851,10 +848,9 @@ int VP8EncTokenLoop(VP8Encoder* const enc) {
    }

 #if (DEBUG_SEARCH > 0)
-    printf("#%2d metric:%.1lf -> %.1lf   last_q=%.2lf q=%.2lf dq=%.2lf "
-           " range:[%.1f, %.1f]\n",
+    printf("#%2d metric:%.1lf -> %.1lf   last_q=%.2lf q=%.2lf dq=%.2lf\n",
           num_pass_left, stats.last_value, stats.value,
-           stats.last_q, stats.q, stats.dq, stats.qmin, stats.qmax);
+           stats.last_q, stats.q, stats.dq);
 #endif
    if (enc->max_i4_header_bits_ > 0 && size_p0 > PARTITION0_SIZE_LIMIT) {
      ++num_pass_left;
@@ -208,7 +208,6 @@ void VP8LHistogramAddSinglePixOrCopy(VP8LHistogram* const histo,
  } else if (PixOrCopyIsCacheIdx(v)) {
    const int literal_ix =
        NUM_LITERAL_CODES + NUM_LENGTH_CODES + PixOrCopyCacheIdx(v);
-    assert(histo->palette_code_bits_ != 0);
    ++histo->literal_[literal_ix];
  } else {
    int code, extra_bits;
@@ -61,14 +61,16 @@ static int CheckNonOpaque(const uint8_t* alpha, int width, int height,
 // Checking for the presence of non-opaque alpha.
 int WebPPictureHasTransparency(const WebPPicture* picture) {
  if (picture == NULL) return 0;
-  if (picture->use_argb) {
+  if (!picture->use_argb) {
+    return CheckNonOpaque(picture->a, picture->width, picture->height,
+                          1, picture->a_stride);
+  } else {
    const int alpha_offset = ALPHA_OFFSET;
    return CheckNonOpaque((const uint8_t*)picture->argb + alpha_offset,
                          picture->width, picture->height,
                          4, picture->argb_stride * sizeof(*picture->argb));
  }
-  return CheckNonOpaque(picture->a, picture->width, picture->height,
-                        1, picture->a_stride);
+  return 0;
 }

 //------------------------------------------------------------------------------
@@ -88,9 +90,8 @@ int WebPPictureHasTransparency(const WebPPicture* picture) {
 static int kLinearToGammaTab[kGammaTabSize + 1];
 static uint16_t kGammaToLinearTab[256];
 static volatile int kGammaTablesOk = 0;
-static void InitGammaTables(void);

-WEBP_DSP_INIT_FUNC(InitGammaTables) {
+static WEBP_TSAN_IGNORE_FUNCTION void InitGammaTables(void) {
  if (!kGammaTablesOk) {
    int v;
    const double scale = (double)(1 << kGammaTabFix) / kGammaScale;
@@ -180,9 +181,8 @@ static uint32_t kLinearToGammaTabS[kGammaTabSize + 2];
 #define GAMMA_TO_LINEAR_BITS 14
 static uint32_t kGammaToLinearTabS[MAX_Y_T + 1];   // size scales with Y_FIX
 static volatile int kGammaTablesSOk = 0;
-static void InitGammaTablesS(void);

-WEBP_DSP_INIT_FUNC(InitGammaTablesS) {
+static WEBP_TSAN_IGNORE_FUNCTION void InitGammaTablesS(void) {
  assert(2 * GAMMA_TO_LINEAR_BITS < 32);  // we use uint32_t intermediate values
  if (!kGammaTablesSOk) {
    int v;
--- a/Show More
+++ b/Show More
Author	SHA1	Message	Date
Alexander Alekhin	464efeb7b0	ippicv: install third-party-programs.txt file	2020-09-26 01:15:49 +03:00
Alexander Alekhin	61c6fd85ba	OpenCV version '-openvino'	2020-09-08 14:35:57 +03:00