- for (block=0; block<4; block++) {
- s->left_block[block].ref_frame = -1;
- s->left_block[block].dc_coeff = 0;
- s->left_block[block].not_null_dc = 0;
- memset(s->coeff_ctx[block], 0, 64*sizeof(s->coeff_ctx[block][0]));
- }
- memset(s->coeff_ctx_last, 24, sizeof(s->coeff_ctx_last));
-
- s->above_block_idx[0] = 1;
- s->above_block_idx[1] = 2;
- s->above_block_idx[2] = 1;
- s->above_block_idx[3] = 2;
- s->above_block_idx[4] = 2*s->mb_width + 2 + 1;
- s->above_block_idx[5] = 3*s->mb_width + 4 + 1;
-
- s->block_offset[s->frbi] = (mb_row_flip*16 + mb_offset) * stride_y;
- s->block_offset[s->srbi] = s->block_offset[s->frbi] + 8*stride_y;
- s->block_offset[1] = s->block_offset[0] + 8;
- s->block_offset[3] = s->block_offset[2] + 8;
- s->block_offset[4] = (mb_row_flip*8 + mb_offset) * stride_uv;
- s->block_offset[5] = s->block_offset[4];
-
- for (mb_col=0; mb_col<s->mb_width; mb_col++) {
- vp56_decode_mb(s, mb_row, mb_col);
-
- for (y=0; y<4; y++) {
- s->above_block_idx[y] += 2;
- s->block_offset[y] += 16;
+ if (s->flip < 0)
+ mb_offset = 7;
+
+ /* main macroblocks loop */
+ for (mb_row=0; mb_row<s->mb_height; mb_row++) {
+ if (s->flip < 0)
+ mb_row_flip = s->mb_height - mb_row - 1;
+ else
+ mb_row_flip = mb_row;
+
+ for (block=0; block<4; block++) {
+ s->left_block[block].ref_frame = VP56_FRAME_NONE;
+ s->left_block[block].dc_coeff = 0;
+ s->left_block[block].not_null_dc = 0;