{
int i;
const AVPixFmtDescriptor *desc = &av_pix_fmt_descriptors[pix_fmt];
- int max_plane_step [4];
- int max_plane_step_comp[4];
+ int max_step [4]; /* max pixel step for each plane */
+ int max_step_comp[4]; /* the component for each plane which has the max pixel step */
memset(linesize, 0, 4*sizeof(linesize[0]));
return 0;
}
- memset(max_plane_step , 0, sizeof(max_plane_step ));
- memset(max_plane_step_comp, 0, sizeof(max_plane_step_comp));
+ memset(max_step , 0, sizeof(max_step ));
+ memset(max_step_comp, 0, sizeof(max_step_comp));
for (i = 0; i < 4; i++) {
const AVComponentDescriptor *comp = &(desc->comp[i]);
- if ((comp->step_minus1+1) > max_plane_step[comp->plane]) {
- max_plane_step [comp->plane] = comp->step_minus1+1;
- max_plane_step_comp[comp->plane] = i;
+ if ((comp->step_minus1+1) > max_step[comp->plane]) {
+ max_step [comp->plane] = comp->step_minus1+1;
+ max_step_comp[comp->plane] = i;
}
}
for (i = 0; i < 4; i++) {
- int s = (max_plane_step_comp[i] == 1 || max_plane_step_comp[i] == 2) ? desc->log2_chroma_w : 0;
- linesize[i] = max_plane_step[i] * (((width + (1 << s) - 1)) >> s);
+ int s = (max_step_comp[i] == 1 || max_step_comp[i] == 2) ? desc->log2_chroma_w : 0;
+ linesize[i] = max_step[i] * (((width + (1 << s) - 1)) >> s);
}
return 0;