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H.264: Don't set data_partitioning for invalid NAL_DPA.

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Before, the decoder could interpret a corrupt frame
as a NAL_DPA and NAL_DPC, and then start decoding
even if decode_slice_header() returned an error.
This frequently caused crashes.

Fixes issue1228, issue1229, and partially issue1238.

Originally committed as revision 19328 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Alexander Strange 2009-07-03 05:52:00 +00:00
parent bda1ad1e73
commit 0410ee8f86
1 changed files with 4 additions and 1 deletions
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5
libavcodec/h264.c
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@ -7603,9 +7603,12 @@ static int decode_nal_units(H264Context *h, const uint8_t *buf, int buf_size){
init_get_bits(&hx->s.gb, ptr, bit_length);
hx->intra_gb_ptr=
hx->inter_gb_ptr= NULL;
if ((err = decode_slice_header(hx, h)) < 0)
break;
hx->s.data_partitioning = 1;
err = decode_slice_header(hx, h);
break;
case NAL_DPB:
init_get_bits(&hx->intra_gb, ptr, bit_length);