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avcodec/h264: in the absence of recovery points, be more tolerant on accepting plain I frames 

Fixes: Ticket3652
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2014-06-04 04:25:14 +02:00
parent fbaf73a33d
commit 19c9d1e8e7
4 changed files with 6 additions and 1 deletions
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1
libavcodec/h264.c
View File

@ -1561,6 +1561,7 @@ again:
if(!idr_cleared)
idr(h); // FIXME ensure we don't lose some frames if there is reordering
idr_cleared = 1;
h->has_recovery_point = 1;
case NAL_SLICE:
init_get_bits(&hx->gb, ptr, bit_length);
hx->intra_gb_ptr =

2
libavcodec/h264.h
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@ -727,6 +727,8 @@ typedef struct H264Context {
int frame_recovered; ///< Initial frame has been completely recovered
int has_recovery_point;
int luma_weight_flag[2]; ///< 7.4.3.2 luma_weight_lX_flag
int chroma_weight_flag[2]; ///< 7.4.3.2 chroma_weight_lX_flag

2
libavcodec/h264_refs.c
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@ -775,7 +775,7 @@ int ff_h264_execute_ref_pic_marking(H264Context *h, MMCO *mmco, int mmco_count)
if ( err >= 0
&& h->long_ref_count==0
&& (h->short_ref_count<=2 || h->pps.ref_count[0] <= 1 && h->pps.ref_count[1] <= 1 && pps_count == 1)
&& h->pps.ref_count[0]<=2 + (h->picture_structure != PICT_FRAME)
&& h->pps.ref_count[0]<=2 + (h->picture_structure != PICT_FRAME) + (2*!h->has_recovery_point)
&& h->cur_pic_ptr->f.pict_type == AV_PICTURE_TYPE_I){
h->cur_pic_ptr->recovered |= 1;
if(!h->avctx->has_b_frames)

2
libavcodec/h264_sei.c
View File

@ -183,6 +183,8 @@ static int decode_recovery_point(H264Context *h)
if (h->avctx->debug & FF_DEBUG_PICT_INFO)
av_log(h->avctx, AV_LOG_DEBUG, "sei_recovery_frame_cnt: %d\n", h->sei_recovery_frame_cnt);
h->has_recovery_point = 1;
return 0;
}