42 const AVFrame *pict,
int *got_packet)
55 max_pkt_size += width * height * 3 * 4;
57 max_pkt_size += mb_width * mb_height * 3 * 4
61 av_log(avctx,
AV_LOG_ERROR,
"Error getting output packet of size %d.\n", max_pkt_size);
79 int left[3], top[3], topleft[3];
82 buffer[0][i]= 1 << (9 - 1);
85 for(y = 0; y <
height; y++) {
86 const int modified_predictor= y ? predictor : 1;
95 top[i]= left[i]= topleft[i]=
buffer[0][i];
97 for(x = 0; x <
width; x++) {
98 buffer[x][1] = ptr[4*x+0] - ptr[4*x+1] + 0x100;
99 buffer[x][2] = ptr[4*x+2] - ptr[4*x+1] + 0x100;
100 buffer[x][0] = (ptr[4*x+0] + 2*ptr[4*x+1] + ptr[4*x+2])>>2;
105 PREDICT(pred, topleft[i], top[i], left[i], modified_predictor);
112 diff= ((left[i] - pred + 0x100)&0x1FF) - 0x100;
124 for(mb_y = 0; mb_y < mb_height; mb_y++) {
129 for(mb_x = 0; mb_x < mb_width; mb_x++) {
130 if(mb_x==0 || mb_y==0){
133 int x, y, h, v, linesize;
142 ptr = p->
data[i] + (linesize * (v * mb_y + y)) + (h * mb_x + x);
151 pred= ptr[-linesize];
153 PREDICT(pred, ptr[-linesize-1], ptr[-linesize], ptr[-1], predictor);
167 int x, y, h, v, linesize;
176 ptr = p->
data[i] + (linesize * (v * mb_y + y)) + (h * mb_x + x);
177 PREDICT(pred, ptr[-linesize-1], ptr[-linesize], ptr[-1], predictor);