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allow 2pass ratecontrol. also fixes psnr displayed by mencoder.

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Originally committed as revision 4130 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Loren Merritt 2005-04-15 05:54:47 +00:00
parent cbb1d2b161
commit 2cd340438a
1 changed files with 42 additions and 3 deletions
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45
libavcodec/snow.c
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@ -3331,11 +3331,24 @@ static int encode_init(AVCodecContext *avctx)
s->version=0;
s->m.avctx = avctx;
s->m.flags = avctx->flags;
s->m.bit_rate= avctx->bit_rate;
s->m.me.scratchpad= av_mallocz((avctx->width+64)*2*16*2*sizeof(uint8_t));
s->m.me.map = av_mallocz(ME_MAP_SIZE*sizeof(uint32_t));
s->m.me.score_map = av_mallocz(ME_MAP_SIZE*sizeof(uint32_t));
h263_encode_init(&s->m); //mv_penalty
if(avctx->flags&CODEC_FLAG_PASS1){
if(!avctx->stats_out)
avctx->stats_out = av_mallocz(256);
}
if(avctx->flags&CODEC_FLAG_PASS2){
if(ff_rate_control_init(&s->m) < 0)
return -1;
}
for(plane_index=0; plane_index<3; plane_index++){
calculate_vissual_weight(s, &s->plane[plane_index]);
}
@ -3401,8 +3414,16 @@ static int encode_frame(AVCodecContext *avctx, unsigned char *buf, int buf_size,
s->input_picture = *pict;
s->keyframe=avctx->gop_size==0 || avctx->frame_number % avctx->gop_size == 0;
pict->pict_type= s->keyframe ? FF_I_TYPE : FF_P_TYPE;
if(avctx->flags&CODEC_FLAG_PASS2){
s->m.pict_type =
pict->pict_type= s->m.rc_context.entry[avctx->frame_number].new_pict_type;
s->keyframe= pict->pict_type==FF_I_TYPE;
s->m.picture_number= avctx->frame_number;
pict->quality= ff_rate_estimate_qscale(&s->m);
}else{
s->keyframe= avctx->gop_size==0 || avctx->frame_number % avctx->gop_size == 0;
pict->pict_type= s->keyframe ? FF_I_TYPE : FF_P_TYPE;
}
if(pict->quality){
s->qlog= rint(QROOT*log(pict->quality / (float)FF_QP2LAMBDA)/log(2));
@ -3415,6 +3436,7 @@ static int encode_frame(AVCodecContext *avctx, unsigned char *buf, int buf_size,
frame_start(s);
s->current_picture.key_frame= s->keyframe;
s->m.current_picture_ptr= &s->m.current_picture;
if(pict->pict_type == P_TYPE){
int block_width = (width +15)>>4;
int block_height= (height+15)>>4;
@ -3427,7 +3449,6 @@ static int encode_frame(AVCodecContext *avctx, unsigned char *buf, int buf_size,
s->m.current_picture.data[0]= s->current_picture.data[0];
s->m. last_picture.data[0]= s-> last_picture.data[0];
s->m. new_picture.data[0]= s-> input_picture.data[0];
s->m.current_picture_ptr= &s->m.current_picture;
s->m. last_picture_ptr= &s->m. last_picture;
s->m.linesize=
s->m. last_picture.linesize[0]=
@ -3462,7 +3483,9 @@ redo_frame:
s->qbias= pict->pict_type == P_TYPE ? 2 : 0;
encode_header(s);
s->m.misc_bits = 8*(s->c.bytestream - s->c.bytestream_start);
encode_blocks(s);
s->m.mv_bits = 8*(s->c.bytestream - s->c.bytestream_start) - s->m.misc_bits;
for(plane_index=0; plane_index<3; plane_index++){
Plane *p= &s->plane[plane_index];
@ -3553,6 +3576,21 @@ STOP_TIMER("pred-conv")}
if(s->last_picture.data[0])
avctx->release_buffer(avctx, &s->last_picture);
s->current_picture.coded_picture_number = avctx->frame_number;
s->current_picture.pict_type = pict->pict_type;
s->current_picture.quality = pict->quality;
if(avctx->flags&CODEC_FLAG_PASS1){
s->m.p_tex_bits = 8*(s->c.bytestream - s->c.bytestream_start) - s->m.misc_bits - s->m.mv_bits;
s->m.current_picture.display_picture_number =
s->m.current_picture.coded_picture_number = avctx->frame_number;
s->m.pict_type = pict->pict_type;
s->m.current_picture.quality = pict->quality;
ff_write_pass1_stats(&s->m);
}
if(avctx->flags&CODEC_FLAG_PASS2){
s->m.total_bits += 8*(s->c.bytestream - s->c.bytestream_start);
}
emms_c();
return ff_rac_terminate(c);
@ -3585,6 +3623,7 @@ static int encode_end(AVCodecContext *avctx)
SnowContext *s = avctx->priv_data;
common_end(s);
av_free(avctx->stats_out);
return 0;
}