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imgcodecs: png: adjust value range for IMWRITE_PNG_ZLIBBUFFER_SIZE

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Kumataro
2025-08-01 09:49:43 +09:00
parent 8dc4ad3ff3
commit 1dd06eb0da
4 changed files with 32 additions and 2 deletions
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modules/imgcodecs/include/opencv2/imgcodecs.hpp
+1 -1
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@@ -97,7 +97,7 @@ enum ImwriteFlags {
IMWRITE_PNG_STRATEGY = 17, //!< For PNG, One of cv::ImwritePNGFlags, default is IMWRITE_PNG_STRATEGY_RLE.
IMWRITE_PNG_BILEVEL = 18, //!< For PNG, Binary level PNG, 0 or 1, default is 0.
IMWRITE_PNG_FILTER = 19, //!< For PNG, One of cv::ImwritePNGFilterFlags, default is IMWRITE_PNG_FILTER_SUB.
IMWRITE_PNG_ZLIBBUFFER_SIZE = 20, //!< For PNG, sets the size of the internal zlib compression buffer in bytes.
IMWRITE_PNG_ZLIBBUFFER_SIZE = 20, //!< For PNG with libpng, sets the size of the internal zlib compression buffer in bytes, from 6 to 1048576(1024 KiB). Default is 8192(8 KiB). For normal use, 131072(128 KiB) or 262144(256 KiB) may be sufficient. If WITH_SPNG=ON, it is not supported.
IMWRITE_PXM_BINARY = 32, //!< For PPM, PGM, or PBM, it can be a binary format flag, 0 or 1. Default value is 1.
IMWRITE_EXR_TYPE = (3 << 4) + 0 /* 48 */, //!< override EXR storage type (FLOAT (FP32) is default)
IMWRITE_EXR_COMPRESSION = (3 << 4) + 1 /* 49 */, //!< override EXR compression type (ZIP_COMPRESSION = 3 is default)