- for (i = 0; i < w; ++i) {
- for (j = 0; j < h; ++j) {
- /*XXX use src? */
- y1 = buf[j*w + i];
- u = buf[(j/2) * (w/2) + i/2 + y_array_size];
- v = buf[(j/2) * (w/2) + i/2 + y_array_size + y_array_size/4];
- ymap[yidx++] = y1;
- umap[uidx++] = u;
- vmap[vidx++] = v;
+ int pitches[3], offsets[3];
+ unsigned char *y, *u, *v;
+ query_image_attributes(pScrn, FOURCC_YV12,
+ &w, &h, pitches, offsets);
+
+ y = buf + offsets[0];
+ v = buf + offsets[1];
+ u = buf + offsets[2];
+ for (i = 0; i < h; ++i) {
+ for (j = 0; j < w; ++j) {
+ int yoffset = (w*i+j);
+ int ii = (i|1), jj = (j|1);
+ int vuoffset = (w/2)*(ii/2) + (jj/2);
+ ymap[yidx++] = y[yoffset];
+ umap[uidx++] = u[vuoffset];
+ vmap[vidx++] = v[vuoffset];