mirror of
https://git.videolan.org/git/ffmpeg.git
synced 2024-08-21 16:55:05 +02:00
171 lines
6.8 KiB
C
171 lines
6.8 KiB
C
/*
|
|
* EXIF metadata parser
|
|
* Copyright (c) 2013 Thilo Borgmann <thilo.borgmann _at_ googlemail.com>
|
|
*
|
|
* 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_ googlemail.com>
|
|
*/
|
|
|
|
#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 ff_exif_decode_ifd(AVCodecContext *avctx, GetByteContext *gbytes, int le,
|
|
int depth, AVDictionary **metadata);
|
|
|
|
#endif /* AVCODEC_EXIF_H */
|