-
- for(y=0; y<avctx->height; y++){
- int offset;
- uint8_t *luma= &a->picture.data[0][ y*a->picture.linesize[0] ];
-
- if((y&3) == 0){
- uint8_t *cb= &a->picture.data[1][ (y>>2)*a->picture.linesize[1] ];
- uint8_t *cr= &a->picture.data[2][ (y>>2)*a->picture.linesize[2] ];
-
- for(i=0; i<4; i++)
- a->offset[i]= *(bytestream++);
-
- offset= a->offset[0];
- for(x=0; x<avctx->width; x+=4){
- luma[0]=( offset += a->delta[ bytestream[2]&0xF ]);
- luma[1]=( offset += a->delta[ bytestream[2]>>4 ]);
- luma[2]=( offset += a->delta[ bytestream[0]&0xF ]);
- luma[3]=( offset += a->delta[ bytestream[0]>>4 ]);
- luma += 4;
-
- *(cb++) = bytestream[1];
- *(cr++) = bytestream[3];
-
- bytestream+= 4;
- }
- }else{
- offset= a->offset[y&3];
-
- for(x=0; x<avctx->width; x+=8){
- luma[0]=( offset += a->delta[ bytestream[2]&0xF ]);
- luma[1]=( offset += a->delta[ bytestream[2]>>4 ]);
- luma[2]=( offset += a->delta[ bytestream[3]&0xF ]);
- luma[3]=( offset += a->delta[ bytestream[3]>>4 ]);
- luma[4]=( offset += a->delta[ bytestream[0]&0xF ]);
- luma[5]=( offset += a->delta[ bytestream[0]>>4 ]);
- luma[6]=( offset += a->delta[ bytestream[1]&0xF ]);
- luma[7]=( offset += a->delta[ bytestream[1]>>4 ]);
- luma += 8;
- bytestream+= 4;
- }
- }
- }
-
- *picture= *(AVFrame*)&a->picture;
- *data_size = sizeof(AVPicture);
-
- emms_c();
-
- return buf_size;
-}