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multithreaded spatial complexity calculation for i frames 

Originally committed as revision 2778 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Michael Niedermayer 2004-02-14 03:21:03 +00:00
parent b6335c9f5b
commit 3a1fa44759
1 changed files with 25 additions and 18 deletions
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43
libavcodec/mpegvideo.c
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@ -3950,6 +3950,27 @@ static int estimate_motion_thread(AVCodecContext *c, void *arg){
return 0;
}
static int mb_var_thread(AVCodecContext *c, void *arg){
MpegEncContext *s= arg;
int mb_x, mb_y;
for(mb_y=s->start_mb_y; mb_y < s->end_mb_y; mb_y++) {
for(mb_x=0; mb_x < s->mb_width; mb_x++) {
int xx = mb_x * 16;
int yy = mb_y * 16;
uint8_t *pix = s->new_picture.data[0] + (yy * s->linesize) + xx;
int varc;
int sum = s->dsp.pix_sum(pix, s->linesize);
varc = (s->dsp.pix_norm1(pix, s->linesize) - (((unsigned)(sum*sum))>>8) + 500 + 128)>>8;
s->current_picture.mb_var [s->mb_stride * mb_y + mb_x] = varc;
s->current_picture.mb_mean[s->mb_stride * mb_y + mb_x] = (sum+128)>>8;
s->mb_var_sum_temp += varc;
}
}
}
static void write_slice_end(MpegEncContext *s){
if(s->codec_id==CODEC_ID_MPEG4){
if(s->partitioned_frame){
@ -4618,9 +4639,6 @@ static void encode_picture(MpegEncContext *s, int picture_number)
}
s->avctx->execute(s->avctx, estimate_motion_thread, (void**)&(s->thread_context[0]), NULL, s->avctx->thread_count);
for(i=1; i<s->avctx->thread_count; i++){
merge_context_after_me(s, s->thread_context[i]);
}
}else /* if(s->pict_type == I_TYPE) */{
/* I-Frame */
for(i=0; i<s->mb_stride*s->mb_height; i++)
@ -4628,23 +4646,12 @@ static void encode_picture(MpegEncContext *s, int picture_number)
if(!s->fixed_qscale){
/* finding spatial complexity for I-frame rate control */
for(mb_y=0; mb_y < s->mb_height; mb_y++) {
for(mb_x=0; mb_x < s->mb_width; mb_x++) {
int xx = mb_x * 16;
int yy = mb_y * 16;
uint8_t *pix = s->new_picture.data[0] + (yy * s->linesize) + xx;
int varc;
int sum = s->dsp.pix_sum(pix, s->linesize);
varc = (s->dsp.pix_norm1(pix, s->linesize) - (((unsigned)(sum*sum))>>8) + 500 + 128)>>8;
s->current_picture.mb_var [s->mb_stride * mb_y + mb_x] = varc;
s->current_picture.mb_mean[s->mb_stride * mb_y + mb_x] = (sum+128)>>8;
s->mb_var_sum_temp += varc;
}
}
s->avctx->execute(s->avctx, mb_var_thread, (void**)&(s->thread_context[0]), NULL, s->avctx->thread_count);
}
}
for(i=1; i<s->avctx->thread_count; i++){
merge_context_after_me(s, s->thread_context[i]);
}
s->current_picture.mc_mb_var_sum= s->current_picture_ptr->mc_mb_var_sum= s->mc_mb_var_sum_temp;
s->current_picture. mb_var_sum= s->current_picture_ptr-> mb_var_sum= s-> mb_var_sum_temp;
emms_c();