Lines Matching refs:y_start
177 int y_start = MACROBLOCK_VPOS(ctx->mb_y_);
186 y_start -= extra_y_rows;
203 if (dec->alpha_data_ != NULL && y_start < y_end) {
209 io->a = VP8DecompressAlphaRows(dec, y_start, y_end - y_start);
215 if (y_start < io->crop_top) {
216 const int delta_y = io->crop_top - y_start;
217 y_start = io->crop_top;
226 if (y_start < y_end) {
233 io->mb_y = y_start - io->crop_top;
235 io->mb_h = y_end - y_start;
