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closed gop support & flags2 as all bits in flags are used

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and a few minor things i forgot to commit ...

Originally committed as revision 2718 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Michael Niedermayer
2004-01-22 19:48:28 +00:00
parent d398a27e0b
commit 303e50e65b
11 changed files with 61 additions and 14 deletions
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24
libavcodec/mpegvideo.c
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@@ -408,6 +408,7 @@ int MPV_common_init(MpegEncContext *s)
DCT_common_init(s);
s->flags= s->avctx->flags;
s->flags2= s->avctx->flags2;
s->mb_width = (s->width + 15) / 16;
s->mb_height = (s->height + 15) / 16;
@@ -700,6 +701,7 @@ int MPV_encode_init(AVCodecContext *avctx)
s->gop_size = avctx->gop_size;
s->avctx = avctx;
s->flags= avctx->flags;
s->flags2= avctx->flags2;
s->max_b_frames= avctx->max_b_frames;
s->codec_id= avctx->codec->id;
s->luma_elim_threshold = avctx->luma_elim_threshold;
@@ -789,6 +791,11 @@ int MPV_encode_init(AVCodecContext *avctx)
return -1;
}
if(s->avctx->scenechange_threshold < 1000000000 && (s->flags & CODEC_FLAG_CLOSED_GOP)){
av_log(avctx, AV_LOG_ERROR, "closed gop with scene change detection arent supported yet\n");
return -1;
}
if(s->codec_id==CODEC_ID_MJPEG){
s->intra_quant_bias= 1<<(QUANT_BIAS_SHIFT-1); //(a + x/2)/x
s->inter_quant_bias= 0;
@@ -1809,12 +1816,19 @@ static void select_input_picture(MpegEncContext *s){
//static int b_count=0;
//b_count+= b_frames;
//av_log(s->avctx, AV_LOG_DEBUG, "b_frames: %d\n", b_count);
if(s->picture_in_gop_number + b_frames >= s->gop_size){
if(s->flags & CODEC_FLAG_CLOSED_GOP)
b_frames=0;
s->input_picture[b_frames]->pict_type= I_TYPE;
}
if( (s->flags & CODEC_FLAG_CLOSED_GOP)
&& b_frames
&& s->input_picture[b_frames]->pict_type== I_TYPE)
b_frames--;
s->reordered_input_picture[0]= s->input_picture[b_frames];
if( s->picture_in_gop_number + b_frames >= s->gop_size
|| s->reordered_input_picture[0]->pict_type== I_TYPE)
s->reordered_input_picture[0]->pict_type= I_TYPE;
else
if(s->reordered_input_picture[0]->pict_type != I_TYPE)
s->reordered_input_picture[0]->pict_type= P_TYPE;
s->reordered_input_picture[0]->coded_picture_number= s->coded_picture_number++;
for(i=0; i<b_frames; i++){