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Diffstat (limited to 'libavcodec/exif.h')
| -rw-r--r-- | libavcodec/exif.h | 170 |
1 files changed, 170 insertions, 0 deletions
diff --git a/libavcodec/exif.h b/libavcodec/exif.h new file mode 100644 index 0000000..2f509ba --- /dev/null +++ b/libavcodec/exif.h @@ -0,0 +1,170 @@ +/* + * 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(AVCodecContext *avctx, GetByteContext *gbytes, int le, + int depth, AVDictionary **metadata); + +#endif /* AVCODEC_EXIF_H */ |
