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Sort B-frames into display order. 

Originally committed as revision 3799 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Loren Merritt 2005-01-04 01:12:48 +00:00
parent 96db7add10
commit a4dae92b58
1 changed files with 39 additions and 9 deletions
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48
libavcodec/h264.c
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@ -281,6 +281,7 @@ typedef struct H264Context{
Picture default_ref_list[2][32];
Picture ref_list[2][32]; //FIXME size?
Picture field_ref_list[2][32]; //FIXME size?
Picture *delayed_pic[16]; //FIXME size?
/**
* memory management control operations buffer.
@ -2929,20 +2930,30 @@ static int pred_weight_table(H264Context *h){
* instantaneous decoder refresh.
*/
static void idr(H264Context *h){
int i;
int i,j;
#define CHECK_DELAY(pic) \
for(j = 0; h->delayed_pic[j]; j++) \
if(pic == h->delayed_pic[j]){ \
pic->reference=1; \
break; \
}
for(i=0; i<h->long_ref_count; i++){
h->long_ref[i]->reference=0;
CHECK_DELAY(h->long_ref[i]);
h->long_ref[i]= NULL;
}
h->long_ref_count=0;
for(i=0; i<h->short_ref_count; i++){
h->short_ref[i]->reference=0;
CHECK_DELAY(h->short_ref[i]);
h->short_ref[i]= NULL;
}
h->short_ref_count=0;
}
#undef CHECK_DELAY
/**
*
@ -6088,19 +6099,38 @@ static int decode_frame(AVCodecContext *avctx,
//FIXME do something with unavailable reference frames
// if(ret==FRAME_SKIPED) return get_consumed_bytes(s, buf_index, buf_size);
#if 0
if(s->pict_type==B_TYPE || s->low_delay){
*pict= *(AVFrame*)&s->current_picture;
} else {
*pict= *(AVFrame*)&s->last_picture;
}
#endif
if(!s->current_picture_ptr){
av_log(h->s.avctx, AV_LOG_DEBUG, "error, NO frame\n");
return -1;
}
*pict= *(AVFrame*)&s->current_picture; //FIXME
{
/* Sort B-frames into display order
* FIXME doesn't allow for multiple delayed frames */
Picture *cur = s->current_picture_ptr;
Picture *prev = h->delayed_pic[0];
Picture *out;
if(cur->pict_type == B_TYPE
|| (!h->sps.gaps_in_frame_num_allowed_flag
&& prev && cur->poc - prev->poc > 2)){
s->low_delay = 0;
s->avctx->has_b_frames = 1;
}
if(s->low_delay || !prev || cur->pict_type == B_TYPE)
out = cur;
else{
out = prev;
if(prev->reference == 1)
prev->reference = 0;
}
if(!s->low_delay && (!prev || out == prev))
h->delayed_pic[0] = cur;
*pict= *(AVFrame*)out;
}
ff_print_debug_info(s, pict);
assert(pict->data[0]);
//printf("out %d\n", (int)pict->data[0]);