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avcodec/exif: do not follow 0 offsets

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Fixes exif decoding failure of 1295328_300.jpg

Reviewed-by; Thilo Borgmann <thilo.borgmann@mail.de>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2014-04-20 04:13:43 +02:00
parent a94de50ba0
commit e70b9b32d5
1 changed files with 5 additions and 0 deletions
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5
libavcodec/exif.c
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@ -78,6 +78,11 @@ static int exif_decode_tag(AVCodecContext *avctx, GetByteContext *gbytes, int le
ff_tread_tag(gbytes, le, &id, &type, &count, &cur_pos); ff_tread_tag(gbytes, le, &id, &type, &count, &cur_pos);
if (!bytestream2_tell(gbytes)) {
bytestream2_seek(gbytes, cur_pos, SEEK_SET);
return 0;
}
// read count values and add it metadata // read count values and add it metadata
// store metadata or proceed with next IFD // store metadata or proceed with next IFD
ret = ff_tis_ifd(id); ret = ff_tis_ifd(id);