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h264/PAFF preparation: use DELAYED_PIC_REF to mark non-refs frames as held for delayed output

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patch by Jeff Downs, heydowns a borg d com
original thread:
Subject: [FFmpeg-devel] [PATCH] Implement PAFF in H.264
Date: 18/09/07 20:30

Originally committed as revision 10592 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Jeff Downs 2007-09-26 13:28:13 +00:00 committed by Andreas Öman
parent b925ef61dd
commit 2ddcf84bb7
2 changed files with 31 additions and 20 deletions
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42
libavcodec/h264.c
View File

@ -38,6 +38,12 @@
//#undef NDEBUG
#include <assert.h>
/**
* Value of Picture.reference when Picture is not a reference picture, but
* is held for delayed output.
*/
#define DELAYED_PIC_REF 4
static VLC coeff_token_vlc[4];
static VLC chroma_dc_coeff_token_vlc;
@ -3091,11 +3097,11 @@ static inline void unreference_pic(H264Context *h, Picture *pic){
int i;
pic->reference=0;
if(pic == h->delayed_output_pic)
pic->reference=1;
pic->reference=DELAYED_PIC_REF;
else{
for(i = 0; h->delayed_pic[i]; i++)
if(pic == h->delayed_pic[i]){
pic->reference=1;
pic->reference=DELAYED_PIC_REF;
break;
}
}
@ -3542,7 +3548,6 @@ static int decode_slice_header(H264Context *h, H264Context *h0){
unsigned int slice_type, tmp, i;
int default_ref_list_done = 0;
s->current_picture.reference= h->nal_ref_idc != 0;
s->dropable= h->nal_ref_idc == 0;
first_mb_in_slice= get_ue_golomb(&s->gb);
@ -3652,14 +3657,6 @@ static int decode_slice_header(H264Context *h, H264Context *h0){
}
}
if(h0->current_slice == 0){
if(frame_start(h) < 0)
return -1;
}
if(h != h0)
clone_slice(h, h0);
s->current_picture_ptr->frame_num= //FIXME frame_num cleanup
h->frame_num= get_bits(&s->gb, h->sps.log2_max_frame_num);
h->mb_mbaff = 0;
@ -3675,6 +3672,16 @@ static int decode_slice_header(H264Context *h, H264Context *h0){
h->mb_aff_frame = h->sps.mb_aff;
}
}
if(h0->current_slice == 0){
if(frame_start(h) < 0)
return -1;
}
if(h != h0)
clone_slice(h, h0);
s->current_picture_ptr->frame_num= h->frame_num; //FIXME frame_num cleanup
assert(s->mb_num == s->mb_width * s->mb_height);
if(first_mb_in_slice << h->mb_aff_frame >= s->mb_num ||
first_mb_in_slice >= s->mb_num){
@ -3763,7 +3770,7 @@ static int decode_slice_header(H264Context *h, H264Context *h0){
else
h->use_weight = 0;
if(s->current_picture.reference)
if(h->nal_ref_idc)
decode_ref_pic_marking(h0, &s->gb);
if(FRAME_MBAFF)
@ -3863,7 +3870,7 @@ static int decode_slice_header(H264Context *h, H264Context *h0){
);
}
if((s->avctx->flags2 & CODEC_FLAG2_FAST) && !s->current_picture.reference){
if((s->avctx->flags2 & CODEC_FLAG2_FAST) && !h->nal_ref_idc){
s->me.qpel_put= s->dsp.put_2tap_qpel_pixels_tab;
s->me.qpel_avg= s->dsp.avg_2tap_qpel_pixels_tab;
}else{
@ -7361,12 +7368,11 @@ static int decode_frame(AVCodecContext *avctx,
h->prev_frame_num_offset= h->frame_num_offset;
h->prev_frame_num= h->frame_num;
if(s->current_picture_ptr->reference){
if(s->current_picture_ptr->reference & s->picture_structure){
h->prev_poc_msb= h->poc_msb;
h->prev_poc_lsb= h->poc_lsb;
}
if(s->current_picture_ptr->reference)
execute_ref_pic_marking(h, h->mmco, h->mmco_index);
}
ff_er_frame_end(s);
@ -7392,7 +7398,7 @@ static int decode_frame(AVCodecContext *avctx,
h->delayed_pic[pics++] = cur;
if(cur->reference == 0)
cur->reference = 1;
cur->reference = DELAYED_PIC_REF;
cross_idr = 0;
for(i=0; h->delayed_pic[i]; i++)
@ -7433,7 +7439,7 @@ static int decode_frame(AVCodecContext *avctx,
*data_size = 0;
else
*data_size = sizeof(AVFrame);
if(prev && prev != out && prev->reference == 1)
if(prev && prev != out && prev->reference == DELAYED_PIC_REF)
prev->reference = 0;
h->delayed_output_pic = out;
#endif

9
libavcodec/mpegvideo.c
View File

@ -907,8 +907,13 @@ alloc:
pic= (AVFrame*)&s->picture[i];
}
pic->reference= (s->pict_type != B_TYPE || s->codec_id == CODEC_ID_H264)
&& !s->dropable ? 3 : 0;
pic->reference= 0;
if (!s->dropable){
if (s->codec_id == CODEC_ID_H264)
pic->reference = s->picture_structure;
else if (s->pict_type != B_TYPE)
pic->reference = 3;
}
pic->coded_picture_number= s->coded_picture_number++;