potok/TinyEXIF
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add status field

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This commit is contained in:
cDc
2017-08-12 17:26:28 +03:00
parent 902c1a08fb
commit 4c2f68ef5c
4 changed files with 82 additions and 66 deletions
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32
TinyEXIF.h
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@@ -54,12 +54,18 @@
namespace TinyEXIF {
enum ErrorCode {
PARSE_EXIF_SUCCESS = 0, // Parse was successful
PARSE_EXIF_ERROR_NO_JPEG = 1, // No JPEG markers found in buffer, possibly invalid JPEG file
PARSE_EXIF_ERROR_NO_EXIF = 2, // No EXIF header found in JPEG file
PARSE_EXIF_ERROR_NO_XMP = 3, // No XMP header found in JPEG file
PARSE_EXIF_ERROR_UNKNOWN_BYTEALIGN = 4, // Byte alignment specified in EXIF file was unknown (not Motorola or Intel)
PARSE_EXIF_ERROR_CORRUPT = 5, // EXIF header was found, but data was corrupted
PARSE_SUCCESS = 0, // Parse EXIF and/or XMP was successful
PARSE_INVALID_JPEG = 1, // No JPEG markers found in buffer, possibly invalid JPEG file
PARSE_UNKNOWN_BYTEALIGN = 2, // Byte alignment specified in EXIF file was unknown (neither Motorola nor Intel)
PARSE_ABSENT_DATA = 3, // No EXIF and/or XMP data found in JPEG file
PARSE_CORRUPT_DATA = 4, // EXIF and/or XMP header was found, but data was corrupted
};
enum FieldCode {
FIELD_NA = 0, // No EXIF or XMP data
FIELD_EXIF = (1 << 0), // EXIF data available
FIELD_XMP = (1 << 1), // XMP data available
FIELD_ALL = FIELD_EXIF|FIELD_XMP
};
class EntryParser;
@@ -69,16 +75,18 @@ class EntryParser;
//
class TINYEXIF_LIB EXIFInfo {
public:
EXIFInfo() { clear(); }
EXIFInfo();
EXIFInfo(const uint8_t* data, unsigned length);
EXIFInfo(const std::string& data);
// Parsing function for an entire JPEG image buffer.
// Parsing function for an entire JPEG image stream.
//
// PARAM 'data': A pointer to a JPEG image.
// PARAM 'length': The length of the JPEG image.
// RETURN: PARSE_EXIF_SUCCESS (0) on success with 'result' filled out
// error code otherwise, as defined by the PARSE_EXIF_ERROR_* macros
// RETURN: PARSE_SUCCESS (0) on success with 'result' filled out
// error code otherwise, as defined by the PARSE_* macros
int parseFrom(const uint8_t* data, unsigned length);
int parseFrom(const std::string &data);
int parseFrom(const std::string& data);
// Parsing function for an EXIF segment. This is used internally by parseFrom()
// but can be called for special cases where only the EXIF section is
@@ -91,6 +99,7 @@ public:
int parseFromXMPSegment(const uint8_t* buf, unsigned len);
// Set all data members to default values.
// Should be called before parsing a new stream.
void clear();
private:
@@ -103,6 +112,7 @@ private:
public:
// Data fields
uint32_t Fields; // Store if EXIF and/or XMP data fields are available
uint32_t ImageWidth; // Image width reported in EXIF data
uint32_t ImageHeight; // Image height reported in EXIF data
uint32_t RelatedImageWidth; // Original image width reported in EXIF data