s->last_bits=bits;
}else{ /* s->pict_type==B_TYPE */
if ((cbp | motion_x | motion_y) == 0 && s->mv_type==MV_TYPE_16X16) {
- /* skip macroblock */
- put_bits(&s->pb, 1, 1);
- s->misc_bits++;
- s->last_bits++;
- s->skip_count++;
- s->mb_skiped=1; // we need that for b-frames
- return;
+ /* check if the B frames can skip it too, as we must skip it if we skip here
+ why didnt they just compress the skip-mb bits instead of reusing them ?! */
+ if(s->max_b_frames>0){
+ int i;
+ const int offset= (s->mb_x + s->mb_y*s->linesize)*16;
+ uint8_t *p_pic= s->new_picture[0] + offset;
+ s->mb_skiped=1;
+ for(i=0; i<s->max_b_frames; i++){
+ uint8_t *b_pic= s->coded_order[i+1].picture[0] + offset;
+ int diff= pix_abs16x16(p_pic, b_pic, s->linesize);
+ if(diff>s->qscale*70){
+ s->mb_skiped=0;
+ break;
+ }
+ }
+ }else
+ s->mb_skiped=1;
+
+ if(s->mb_skiped==1){
+ /* skip macroblock */
+ put_bits(&s->pb, 1, 1);
+ s->misc_bits++;
+ s->last_bits++;
+ s->skip_count++;
+ return;
+ }
}
put_bits(&s->pb, 1, 0); /* mb coded */
if(s->mv_type==MV_TYPE_16X16){
if(width && height){ /* they should be non zero but who knows ... */
s->width = width;
s->height = height;
-// printf("%d %d\n", width, height);
+// printf("width/height: %d %d\n", width, height);
}
}
s->b_code = get_bits(&s->gb, 3);
//printf("b-code %d\n", s->b_code);
}
-//printf("quant:%d fcode:%d\n", s->qscale, s->f_code);
+//printf("quant:%d fcode:%d bcode:%d type:%d\n", s->qscale, s->f_code, s->b_code, s->pict_type);
if(!s->scalability){
if (s->shape!=RECT_SHAPE && s->pict_type!=I_TYPE) {
skip_bits1(&s->gb); // vop shape coding type