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avcodec/exif: remove GetByteContext usage from avpriv_exif_decode_ifd()

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This prevents potential ABI issues with GetByteContext.

Reviewed-by: Paul B Mahol <onemda@gmail.com>
Signed-off-by: James Almer <jamrial@gmail.com>
This commit is contained in:
James Almer
2017-10-23 23:39:54 -03:00
parent 6bd665b7c5
commit ae100046ca
5 changed files with 22 additions and 9 deletions
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4
libavformat/avidec.c
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@@ -401,10 +401,10 @@ static int avi_extract_stream_metadata(AVFormatContext *s, AVStream *st)
// skip 4 byte padding
bytestream2_skip(&gb, 4);
offset = bytestream2_tell(&gb);
bytestream2_init(&gb, data + offset, data_size - offset);
// decode EXIF tags from IFD, AVI is always little-endian
return avpriv_exif_decode_ifd(s, &gb, 1, 0, &st->metadata);
return avpriv_exif_decode_ifd(s, data + offset, data_size - offset,
1, 0, &st->metadata);
break;
case MKTAG('C', 'A', 'S', 'I'):
avpriv_request_sample(s, "RIFF stream data tag type CASI (%u)", tag);