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- /*
- * EXIF metadata parser
- * Copyright (c) 2013 Thilo Borgmann <thilo.borgmann _at_ mail.de>
- *
- * This file is part of FFmpeg.
- *
- * FFmpeg is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; either
- * version 2.1 of the License, or (at your option) any later version.
- *
- * FFmpeg is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with FFmpeg; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
- */
- /**
- * @file
- * EXIF metadata parser
- * @author Thilo Borgmann <thilo.borgmann _at_ mail.de>
- */
- #ifndef AVCODEC_EXIF_H
- #define AVCODEC_EXIF_H
- #include "avcodec.h"
- #include "bytestream.h"
- #include "tiff.h"
- #define EXIF_MAX_IFD_RECURSION 2
- #define EXIF_TAG_NAME_LENGTH 32
- struct exif_tag {
- char name[EXIF_TAG_NAME_LENGTH];
- uint16_t id;
- };
- static const struct exif_tag tag_list[] = { // JEITA CP-3451 EXIF specification:
- {"GPSVersionID", 0x00}, // <- Table 12 GPS Attribute Information
- {"GPSLatitudeRef", 0x01},
- {"GPSLatitude", 0x02},
- {"GPSLongitudeRef", 0x03},
- {"GPSLongitude", 0x04},
- {"GPSAltitudeRef", 0x05},
- {"GPSAltitude", 0x06},
- {"GPSTimeStamp", 0x07},
- {"GPSSatellites", 0x08},
- {"GPSStatus", 0x09},
- {"GPSMeasureMode", 0x0A},
- {"GPSDOP", 0x0B},
- {"GPSSpeedRef", 0x0C},
- {"GPSSpeed", 0x0D},
- {"GPSTrackRef", 0x0E},
- {"GPSTrack", 0x0F},
- {"GPSImgDirectionRef", 0x10},
- {"GPSImgDirection", 0x11},
- {"GPSMapDatum", 0x12},
- {"GPSDestLatitudeRef", 0x13},
- {"GPSDestLatitude", 0x14},
- {"GPSDestLongitudeRef", 0x15},
- {"GPSDestLongitude", 0x16},
- {"GPSDestBearingRef", 0x17},
- {"GPSDestBearing", 0x18},
- {"GPSDestDistanceRef", 0x19},
- {"GPSDestDistance", 0x1A},
- {"GPSProcessingMethod", 0x1B},
- {"GPSAreaInformation", 0x1C},
- {"GPSDateStamp", 0x1D},
- {"GPSDifferential", 0x1E},
- {"ImageWidth", 0x100}, // <- Table 3 TIFF Rev. 6.0 Attribute Information Used in Exif
- {"ImageLength", 0x101},
- {"BitsPerSample", 0x102},
- {"Compression", 0x103},
- {"PhotometricInterpretation", 0x106},
- {"Orientation", 0x112},
- {"SamplesPerPixel", 0x115},
- {"PlanarConfiguration", 0x11C},
- {"YCbCrSubSampling", 0x212},
- {"YCbCrPositioning", 0x213},
- {"XResolution", 0x11A},
- {"YResolution", 0x11B},
- {"ResolutionUnit", 0x128},
- {"StripOffsets", 0x111},
- {"RowsPerStrip", 0x116},
- {"StripByteCounts", 0x117},
- {"JPEGInterchangeFormat", 0x201},
- {"JPEGInterchangeFormatLength",0x202},
- {"TransferFunction", 0x12D},
- {"WhitePoint", 0x13E},
- {"PrimaryChromaticities", 0x13F},
- {"YCbCrCoefficients", 0x211},
- {"ReferenceBlackWhite", 0x214},
- {"DateTime", 0x132},
- {"ImageDescription", 0x10E},
- {"Make", 0x10F},
- {"Model", 0x110},
- {"Software", 0x131},
- {"Artist", 0x13B},
- {"Copyright", 0x8298},
- {"ExifVersion", 0x9000}, // <- Table 4 Exif IFD Attribute Information (1)
- {"FlashpixVersion", 0xA000},
- {"ColorSpace", 0xA001},
- {"ComponentsConfiguration", 0x9101},
- {"CompressedBitsPerPixel", 0x9102},
- {"PixelXDimension", 0xA002},
- {"PixelYDimension", 0xA003},
- {"MakerNote", 0x927C},
- {"UserComment", 0x9286},
- {"RelatedSoundFile", 0xA004},
- {"DateTimeOriginal", 0x9003},
- {"DateTimeDigitized", 0x9004},
- {"SubSecTime", 0x9290},
- {"SubSecTimeOriginal", 0x9291},
- {"SubSecTimeDigitized", 0x9292},
- {"ImageUniqueID", 0xA420},
- {"ExposureTime", 0x829A}, // <- Table 5 Exif IFD Attribute Information (2)
- {"FNumber", 0x829D},
- {"ExposureProgram", 0x8822},
- {"SpectralSensitivity", 0x8824},
- {"ISOSpeedRatings", 0x8827},
- {"OECF", 0x8828},
- {"ShutterSpeedValue", 0x9201},
- {"ApertureValue", 0x9202},
- {"BrightnessValue", 0x9203},
- {"ExposureBiasValue", 0x9204},
- {"MaxApertureValue", 0x9205},
- {"SubjectDistance", 0x9206},
- {"MeteringMode", 0x9207},
- {"LightSource", 0x9208},
- {"Flash", 0x9209},
- {"FocalLength", 0x920A},
- {"SubjectArea", 0x9214},
- {"FlashEnergy", 0xA20B},
- {"SpatialFrequencyResponse", 0xA20C},
- {"FocalPlaneXResolution", 0xA20E},
- {"FocalPlaneYResolution", 0xA20F},
- {"FocalPlaneResolutionUnit", 0xA210},
- {"SubjectLocation", 0xA214},
- {"ExposureIndex", 0xA215},
- {"SensingMethod", 0xA217},
- {"FileSource", 0xA300},
- {"SceneType", 0xA301},
- {"CFAPattern", 0xA302},
- {"CustomRendered", 0xA401},
- {"ExposureMode", 0xA402},
- {"WhiteBalance", 0xA403},
- {"DigitalZoomRatio", 0xA404},
- {"FocalLengthIn35mmFilm", 0xA405},
- {"SceneCaptureType", 0xA406},
- {"GainControl", 0xA407},
- {"Contrast", 0xA408},
- {"Saturation", 0xA409},
- {"Sharpness", 0xA40A},
- {"DeviceSettingDescription", 0xA40B},
- {"SubjectDistanceRange", 0xA40C}
- // {"InteroperabilityIndex", 0x1}, // <- Table 13 Interoperability IFD Attribute Information
- // {"", 0x0}
- };
- /** Recursively decodes all IFD's and
- * adds included TAGS into the metadata dictionary. */
- int avpriv_exif_decode_ifd(void *logctx, const uint8_t *buf, int size,
- int le, int depth, AVDictionary **metadata);
- int ff_exif_decode_ifd(void *logctx, GetByteContext *gbytes, int le,
- int depth, AVDictionary **metadata);
- #endif /* AVCODEC_EXIF_H */
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