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H264: Check if more RBSP data in PPS provided by current profile due to Annex A. 

This patch also fix issue https://ffmpeg.org/trac/ffmpeg/ticket/685.

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Anatoly Nenashev 2011-11-25 17:10:47 +01:00 committed by Michael Niedermayer
parent e1d48786d5
commit a7cfef2994
1 changed files with 13 additions and 1 deletions
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14
libavcodec/h264_ps.c
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@ -485,6 +485,18 @@ build_qp_table(PPS *pps, int t, int index, const int depth)
pps->chroma_qp_table[t][i] = ff_h264_chroma_qp[depth-8][av_clip(i + index, 0, max_qp)];
}
static int more_rbsp_data_in_pps(H264Context *h, PPS *pps)
{
const SPS *sps = h->sps_buffers[pps->sps_id];
if (sps->constraint_set_flags & 7) {
av_log(h->s.avctx, AV_LOG_WARNING,
"Current profile doesn't provide more RBSP data in PPS, skipping\n");
return 0;
}
return 1;
}
int ff_h264_decode_picture_parameter_set(H264Context *h, int bit_length){
MpegEncContext * const s = &h->s;
unsigned int pps_id= get_ue_golomb(&s->gb);
@ -568,7 +580,7 @@ int ff_h264_decode_picture_parameter_set(H264Context *h, int bit_length){
memcpy(pps->scaling_matrix8, h->sps_buffers[pps->sps_id]->scaling_matrix8, sizeof(pps->scaling_matrix8));
bits_left = bit_length - get_bits_count(&s->gb);
if(bits_left > 0){
if(bits_left > 0 && more_rbsp_data_in_pps(h, pps)){
pps->transform_8x8_mode= get_bits1(&s->gb);
decode_scaling_matrices(h, h->sps_buffers[pps->sps_id], pps, 0, pps->scaling_matrix4, pps->scaling_matrix8);
pps->chroma_qp_index_offset[1]= get_se_golomb(&s->gb); //second_chroma_qp_index_offset