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android_external_ffmpeg/tests/ref/fate/exif-image-webp
Leo Izen 784aa09fa8
avcodec/exif: parse additional EXIF IFDs 
Most EXIF metadata is in IFD0 and most EXIF payloads only contain
one IFD, but it is possible for there to be more IFDs after the
existing trailing one. exiftool and similar software report these IFDs
as IFD1, IFD2, etc. This commit reads those additional IFDs and attaches
them as dummy entries in the top-level IFD ranging from 0xFFFC down to
0xFFED, which are unused by the EXIF spec. The EXIF API is only able to
return and work with a single IFD, so by attaching it as a subdirectory
this metadata can be preserved.

This is done transparently through the read/write process. Upon parsing
an additional IFD1, it will be attached, but it will be written with
av_exif_write after IFD0 rather than as a subdirectory, as intended.

Existing files without more than one IFD, i.e. most files, will be unaffected
by this change, as well as API clients looking to parse specific fields, but
now more metadata is parsed and written, rather than simply being discarded
as trailing data.

Signed-off-by: Leo Izen <leo.izen@gmail.com>
2025-12-20 11:53:23 -05:00

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[FRAME]
media_type=video
stream_index=0
key_frame=1
pts=0
pts_time=0.000000
pkt_dts=0
pkt_dts_time=0.000000
best_effort_timestamp=0
best_effort_timestamp_time=0.000000
duration=1
duration_time=0.040000
pkt_pos=0
pkt_size=39276
width=400
height=225
crop_top=0
crop_bottom=0
crop_left=0
crop_right=0
pix_fmt=yuv420p
sample_aspect_ratio=N/A
pict_type=I
interlaced_frame=0
top_field_first=0
lossless=0
repeat_pict=0
color_range=tv
color_space=bt470bg
color_primaries=unknown
color_transfer=unknown
chroma_location=unspecified
alpha_mode=unspecified
TAG:ImageDescription=
TAG:Make=Canon
TAG:Model=Canon PowerShot SX200 IS
TAG:XResolution= 180:1
TAG:YResolution= 180:1
TAG:ResolutionUnit= 2
TAG:DateTime=2013:07:18 13:12:03
TAG:YCbCrPositioning= 2
TAG:ExifIFD/ExposureTime= 1:1250
TAG:ExifIFD/FNumber= 40:10
TAG:ExifIFD/ISOSpeedRatings= 160
TAG:ExifIFD/ExifVersion= 48, 50, 50, 49
TAG:ExifIFD/DateTimeOriginal=2013:07:18 13:12:03
TAG:ExifIFD/DateTimeDigitized=2013:07:18 13:12:03
TAG:ExifIFD/ComponentsConfiguration= 1, 2, 3, 0
TAG:ExifIFD/CompressedBitsPerPixel= 3:1
TAG:ExifIFD/ShutterSpeedValue= 329:32
TAG:ExifIFD/ApertureValue= 128:32
TAG:ExifIFD/ExposureBiasValue= 0:3
TAG:ExifIFD/MaxApertureValue= 113:32
TAG:ExifIFD/MeteringMode= 5
TAG:ExifIFD/Flash= 16
TAG:ExifIFD/FocalLength= 5000:1000
TAG:ExifIFD/MakerNote/GPSLatitudeRef= 96, 2, 0, 3, 0, 0, 0, 4
65535, 1, 9, 0, 0, 0, 0, 0
15, 3, 1, 16390, 0, 32767, 65535, 60000
5000, 1000, 113, 221, 65535, 0, 0, 0
1, 0, 1, 0, 4000, 4000, 0, 0
65535, 0, 32767, 32767, 0, 0, 65535, 90
TAG:ExifIFD/MakerNote/GPSLatitude= 2, 5000, 250, 187
TAG:ExifIFD/MakerNote/GPSLongitudeRef= 0, 0, 0, 0
TAG:ExifIFD/MakerNote/GPSLongitude= 68, 18, 160, 324, 128, 329, 0, 0
0, 0, 0, 0, 0, 0, 0, 0
0, 0, 1, 119, 0, 128, 329, 0
0, 23, 250, 0, 0, 0, 0, 0
0, 0
TAG:ExifIFD/MakerNote/GPSVersionID= 0, 0, 0, 0, 0, 0
TAG:ExifIFD/MakerNote/GPSAltitude=IMG:PowerShot SX200 IS JPEG
TAG:ExifIFD/MakerNote/GPSTimeStamp=Firmware Version 1.00
TAG:ExifIFD/MakerNote/GPSSatellites=1025553
TAG:ExifIFD/MakerNote/GPSStatus=
TAG:ExifIFD/MakerNote/GPSSpeed= 5, 467, 411, 0, 0, 0, 384, 989
56, 0, 0, 0, 0, 576, 891, 4294967205
0, 0, 7, 66, 10, 17, 70, 0
0, 81, 0, 972, 906, 906, 384, 1090
4294967205, 0, 0, 906, 906, 0, 0, 1
0, 5, 0, 0, 0, 0, 0, 0
0, 0, 0, 35, 120, 120, 4294967142, 208
4294967154, 208, 0, 0, 4294967154, 208, 12, 204
4294967279, 201, 0, 0, 0, 0, 0, 0
1024, 1024, 1024, 1280, 8, 4294967279, 201, 24
911, 1661, 1633, 911, 100, 0, 0, 1
347, 1137, 972, 659, 4294967205, 10, 128, 507
4, 0, 586, 0, 0, 609, 662, 716
753, 0, 128, 0, 4294943240, 582, 581, 581
577, 578, 580, 578, 579, 579, 580, 1554
0, 0, 0, 1336, 250, 309, 58, 1029
193, 240, 45, 0, 0, 3, 3, 8
0, 0, 0, 0, 0, 0, 107, 4294967046
0, 65535, 0, 4294964224, 133, 614, 499, 0
611, 0, 0, 192, 260, 256, 260, 0
0, 96, 0, 0, 33, 13, 691445229
TAG:ExifIFD/MakerNote/GPSImgDirectionRef=39845888
TAG:ExifIFD/MakerNote/0x0026= 96, 4, 9, 9, 4000, 2248, 100, 100
18, 18, 18, 18, 18, 18, 18, 18
18, 18, 18, 18, 18, 18, 18, 18
18, 18, 65518, 0, 18, 65518, 0, 18
65518, 0, 18, 65518, 65518, 65518, 0, 0
0, 18, 18, 18, 1, 0, 0, 0
TAG:ExifIFD/MakerNote/GPSDestLatitudeRef= 0, 159, 15, 104
TAG:ExifIFD/MakerNote/GPSDestBearing= 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
TAG:ExifIFD/MakerNote/GPSDestDistanceRef= 1
TAG:ExifIFD/MakerNote/GPSAreaInformation= 0
TAG:ExifIFD/MakerNote/GPSDateStamp= 32, 1, 0, 2, 2, 2, 2, 0
0, 0, 0, 0, 0, 0, 0, 0
TAG:ExifIFD/MakerNote/GPSDifferential=16778240
TAG:ExifIFD/MakerNote/0x001F= 138, 1, 0, 4, 8, 0, 0, 0
0, 0, 0, 0, 0, 0, 0, 0
0, 0, 0, 0, 0, 0, 0, 0
0, 0, 0, 0, 0, 0, 0, 0
0, 0, 0, 0, 0, 0, 0, 0
0, 0, 0, 0, 0, 0, 0, 0
0, 0, 0, 0, 0, 0, 0, 0
0, 0, 0, 0, 0, 0, 0, 0
0, 0, 0, 0, 0
TAG:ExifIFD/MakerNote/0x0022= 416, 0, 0, 16, 8, 1, 1, 640
480, 0, 0, 0, 0, 0, 8, 384
0, 0, 0, 0, 0, 0, 0, 0
0, 0, 0, 0, 0, 0, 0, 0
0, 0, 0, 0, 0, 0, 0, 0
0, 0, 0, 0, 0, 0, 0, 0
0, 0, 0, 0, 0, 0, 0, 0
0, 0, 0, 0, 0, 0, 0, 0
0, 0, 0, 0, 0, 0, 0, 0
0, 0, 0, 0, 0, 0, 0, 0
0, 0, 0, 0, 0, 0, 0, 0
0, 0, 0, 0, 0, 0, 0, 0
0, 0, 0, 0, 0, 0, 0, 0
0, 0, 0, 0, 0, 0, 0, 0
0, 0, 0, 0, 0, 0, 0, 0
0, 0, 0, 0, 0, 0, 0, 0
0, 0, 0, 0, 0, 0, 0, 0
0, 0, 0, 0, 0, 0, 0, 0
0, 0, 0, 0, 0, 0, 0, 0
0, 0, 0, 0, 0, 0, 0, 0
0, 0, 0, 0, 0, 0, 0, 0
0, 0, 0, 0, 0, 0, 0, 0
0, 0, 0, 0, 0, 0, 0, 0
0, 0, 0, 0, 0, 0, 0, 0
0, 0, 0, 0, 0, 0, 0, 0
0, 0, 0, 0, 0, 0, 0, 0
TAG:ExifIFD/MakerNote/0x0023= 8, 0
TAG:ExifIFD/MakerNote/0x0027= 10, 0, 65535, 0, 0
TAG:ExifIFD/MakerNote/0x0028=239, 154, 237, 228, 191, 235, 20, 171, 30, 6, 2, 129, 88, 251, 56, 49
TAG:ExifIFD/MakerNote/0x00D0= 0
TAG:ExifIFD/MakerNote/0x002D= 0
TAG:ExifIFD/UserComment= 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
0, 0, 0, 0, 0, 0, 0, 0
TAG:ExifIFD/FlashpixVersion= 48, 49, 48, 48
TAG:ExifIFD/ColorSpace= 1
TAG:ExifIFD/PixelXDimension= 4000
TAG:ExifIFD/PixelYDimension= 2248
TAG:ExifIFD/InteropIFD/GPSLatitudeRef=R98
TAG:ExifIFD/InteropIFD/GPSLatitude= 48, 49, 48, 48
TAG:ExifIFD/InteropIFD/RelatedImageWidth= 4000
TAG:ExifIFD/InteropIFD/RelatedImageLength= 2248
TAG:ExifIFD/FocalPlaneXResolution=4000000:244
TAG:ExifIFD/FocalPlaneYResolution=2248000:183
TAG:ExifIFD/FocalPlaneResolutionUnit= 2
TAG:ExifIFD/SensingMethod= 2
TAG:ExifIFD/FileSource= 3
TAG:ExifIFD/CustomRendered= 0
TAG:ExifIFD/ExposureMode= 0
TAG:ExifIFD/WhiteBalance= 0
TAG:ExifIFD/DigitalZoomRatio= 4000:4000
TAG:ExifIFD/SceneCaptureType= 0
TAG:IFD1/Compression= 6
TAG:IFD1/XResolution= 180:1
TAG:IFD1/YResolution= 180:1
TAG:IFD1/ResolutionUnit= 2
TAG:IFD1/JPEGInterchangeFormat= 5108
TAG:IFD1/JPEGInterchangeFormatLength= 4214
[SIDE_DATA]
side_data_type=3x3 displaymatrix
displaymatrix=
00000000: 65536 0 0
00000001: 0 65536 0
00000002: 0 0 1073741824
rotation=0
[/SIDE_DATA]
[SIDE_DATA]
side_data_type=EXIF metadata
size=3379
[/SIDE_DATA]
[/FRAME]
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