| /* |
| * Copyright (c) 2010 The WebM project authors. All Rights Reserved. |
| * |
| * Use of this source code is governed by a BSD-style license |
| * that can be found in the LICENSE file in the root of the source |
| * tree. An additional intellectual property rights grant can be found |
| * in the file PATENTS. All contributing project authors may |
| * be found in the AUTHORS file in the root of the source tree. |
| */ |
| |
| #include "decodemv.h" |
| #include "treereader.h" |
| #include "vp8/common/entropymv.h" |
| #include "vp8/common/entropymode.h" |
| #include "onyxd_int.h" |
| #include "vp8/common/findnearmv.h" |
| |
| static B_PREDICTION_MODE read_bmode(vp8_reader *bc, const vp8_prob *p) { |
| const int i = vp8_treed_read(bc, vp8_bmode_tree, p); |
| |
| return (B_PREDICTION_MODE)i; |
| } |
| |
| static MB_PREDICTION_MODE read_ymode(vp8_reader *bc, const vp8_prob *p) { |
| const int i = vp8_treed_read(bc, vp8_ymode_tree, p); |
| |
| return (MB_PREDICTION_MODE)i; |
| } |
| |
| static MB_PREDICTION_MODE read_kf_ymode(vp8_reader *bc, const vp8_prob *p) { |
| const int i = vp8_treed_read(bc, vp8_kf_ymode_tree, p); |
| |
| return (MB_PREDICTION_MODE)i; |
| } |
| |
| static MB_PREDICTION_MODE read_uv_mode(vp8_reader *bc, const vp8_prob *p) { |
| const int i = vp8_treed_read(bc, vp8_uv_mode_tree, p); |
| |
| return (MB_PREDICTION_MODE)i; |
| } |
| |
| static void read_kf_modes(VP8D_COMP *pbi, MODE_INFO *mi) { |
| vp8_reader *const bc = &pbi->mbc[8]; |
| const int mis = pbi->common.mode_info_stride; |
| |
| mi->mbmi.ref_frame = INTRA_FRAME; |
| mi->mbmi.mode = read_kf_ymode(bc, vp8_kf_ymode_prob); |
| |
| if (mi->mbmi.mode == B_PRED) { |
| int i = 0; |
| mi->mbmi.is_4x4 = 1; |
| |
| do { |
| const B_PREDICTION_MODE A = above_block_mode(mi, i, mis); |
| const B_PREDICTION_MODE L = left_block_mode(mi, i); |
| |
| mi->bmi[i].as_mode = read_bmode(bc, vp8_kf_bmode_prob[A][L]); |
| } while (++i < 16); |
| } |
| |
| mi->mbmi.uv_mode = read_uv_mode(bc, vp8_kf_uv_mode_prob); |
| } |
| |
| static int read_mvcomponent(vp8_reader *r, const MV_CONTEXT *mvc) { |
| const vp8_prob *const p = (const vp8_prob *)mvc; |
| int x = 0; |
| |
| if (vp8_read(r, p[mvpis_short])) { /* Large */ |
| int i = 0; |
| |
| do { |
| x += vp8_read(r, p[MVPbits + i]) << i; |
| } while (++i < 3); |
| |
| i = mvlong_width - 1; /* Skip bit 3, which is sometimes implicit */ |
| |
| do { |
| x += vp8_read(r, p[MVPbits + i]) << i; |
| } while (--i > 3); |
| |
| if (!(x & 0xFFF0) || vp8_read(r, p[MVPbits + 3])) x += 8; |
| } else { /* small */ |
| x = vp8_treed_read(r, vp8_small_mvtree, p + MVPshort); |
| } |
| |
| if (x && vp8_read(r, p[MVPsign])) x = -x; |
| |
| return x; |
| } |
| |
| static void read_mv(vp8_reader *r, MV *mv, const MV_CONTEXT *mvc) { |
| mv->row = (short)(read_mvcomponent(r, mvc) * 2); |
| mv->col = (short)(read_mvcomponent(r, ++mvc) * 2); |
| } |
| |
| static void read_mvcontexts(vp8_reader *bc, MV_CONTEXT *mvc) { |
| int i = 0; |
| |
| do { |
| const vp8_prob *up = vp8_mv_update_probs[i].prob; |
| vp8_prob *p = (vp8_prob *)(mvc + i); |
| vp8_prob *const pstop = p + MVPcount; |
| |
| do { |
| if (vp8_read(bc, *up++)) { |
| const vp8_prob x = (vp8_prob)vp8_read_literal(bc, 7); |
| |
| *p = x ? x << 1 : 1; |
| } |
| } while (++p < pstop); |
| } while (++i < 2); |
| } |
| |
| static const unsigned char mbsplit_fill_count[4] = { 8, 8, 4, 1 }; |
| static const unsigned char mbsplit_fill_offset[4][16] = { |
| { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15 }, |
| { 0, 1, 4, 5, 8, 9, 12, 13, 2, 3, 6, 7, 10, 11, 14, 15 }, |
| { 0, 1, 4, 5, 2, 3, 6, 7, 8, 9, 12, 13, 10, 11, 14, 15 }, |
| { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15 } |
| }; |
| |
| static void mb_mode_mv_init(VP8D_COMP *pbi) { |
| vp8_reader *const bc = &pbi->mbc[8]; |
| MV_CONTEXT *const mvc = pbi->common.fc.mvc; |
| |
| #if CONFIG_ERROR_CONCEALMENT |
| /* Default is that no macroblock is corrupt, therefore we initialize |
| * mvs_corrupt_from_mb to something very big, which we can be sure is |
| * outside the frame. */ |
| pbi->mvs_corrupt_from_mb = UINT_MAX; |
| #endif |
| /* Read the mb_no_coeff_skip flag */ |
| pbi->common.mb_no_coeff_skip = (int)vp8_read_bit(bc); |
| |
| pbi->prob_skip_false = 0; |
| if (pbi->common.mb_no_coeff_skip) { |
| pbi->prob_skip_false = (vp8_prob)vp8_read_literal(bc, 8); |
| } |
| |
| if (pbi->common.frame_type != KEY_FRAME) { |
| pbi->prob_intra = (vp8_prob)vp8_read_literal(bc, 8); |
| pbi->prob_last = (vp8_prob)vp8_read_literal(bc, 8); |
| pbi->prob_gf = (vp8_prob)vp8_read_literal(bc, 8); |
| |
| if (vp8_read_bit(bc)) { |
| int i = 0; |
| |
| do { |
| pbi->common.fc.ymode_prob[i] = (vp8_prob)vp8_read_literal(bc, 8); |
| } while (++i < 4); |
| } |
| |
| if (vp8_read_bit(bc)) { |
| int i = 0; |
| |
| do { |
| pbi->common.fc.uv_mode_prob[i] = (vp8_prob)vp8_read_literal(bc, 8); |
| } while (++i < 3); |
| } |
| |
| read_mvcontexts(bc, mvc); |
| } |
| } |
| |
| const vp8_prob vp8_sub_mv_ref_prob3[8][VP8_SUBMVREFS - 1] = { |
| { 147, 136, 18 }, /* SUBMVREF_NORMAL */ |
| { 223, 1, 34 }, /* SUBMVREF_LEFT_ABOVE_SAME */ |
| { 106, 145, 1 }, /* SUBMVREF_LEFT_ZED */ |
| { 208, 1, 1 }, /* SUBMVREF_LEFT_ABOVE_ZED */ |
| { 179, 121, 1 }, /* SUBMVREF_ABOVE_ZED */ |
| { 223, 1, 34 }, /* SUBMVREF_LEFT_ABOVE_SAME */ |
| { 179, 121, 1 }, /* SUBMVREF_ABOVE_ZED */ |
| { 208, 1, 1 } /* SUBMVREF_LEFT_ABOVE_ZED */ |
| }; |
| |
| static const vp8_prob *get_sub_mv_ref_prob(const int left, const int above) { |
| int lez = (left == 0); |
| int aez = (above == 0); |
| int lea = (left == above); |
| const vp8_prob *prob; |
| |
| prob = vp8_sub_mv_ref_prob3[(aez << 2) | (lez << 1) | (lea)]; |
| |
| return prob; |
| } |
| |
| static void decode_split_mv(vp8_reader *const bc, MODE_INFO *mi, |
| const MODE_INFO *left_mb, const MODE_INFO *above_mb, |
| MB_MODE_INFO *mbmi, int_mv best_mv, |
| MV_CONTEXT *const mvc, int mb_to_left_edge, |
| int mb_to_right_edge, int mb_to_top_edge, |
| int mb_to_bottom_edge) { |
| int s; /* split configuration (16x8, 8x16, 8x8, 4x4) */ |
| /* number of partitions in the split configuration (see vp8_mbsplit_count) */ |
| int num_p; |
| int j = 0; |
| |
| s = 3; |
| num_p = 16; |
| if (vp8_read(bc, 110)) { |
| s = 2; |
| num_p = 4; |
| if (vp8_read(bc, 111)) { |
| s = vp8_read(bc, 150); |
| num_p = 2; |
| } |
| } |
| |
| do /* for each subset j */ |
| { |
| int_mv leftmv, abovemv; |
| int_mv blockmv; |
| int k; /* first block in subset j */ |
| |
| const vp8_prob *prob; |
| k = vp8_mbsplit_offset[s][j]; |
| |
| if (!(k & 3)) { |
| /* On L edge, get from MB to left of us */ |
| if (left_mb->mbmi.mode != SPLITMV) { |
| leftmv.as_int = left_mb->mbmi.mv.as_int; |
| } else { |
| leftmv.as_int = (left_mb->bmi + k + 4 - 1)->mv.as_int; |
| } |
| } else { |
| leftmv.as_int = (mi->bmi + k - 1)->mv.as_int; |
| } |
| |
| if (!(k >> 2)) { |
| /* On top edge, get from MB above us */ |
| if (above_mb->mbmi.mode != SPLITMV) { |
| abovemv.as_int = above_mb->mbmi.mv.as_int; |
| } else { |
| abovemv.as_int = (above_mb->bmi + k + 16 - 4)->mv.as_int; |
| } |
| } else { |
| abovemv.as_int = (mi->bmi + k - 4)->mv.as_int; |
| } |
| |
| prob = get_sub_mv_ref_prob(leftmv.as_int, abovemv.as_int); |
| |
| if (vp8_read(bc, prob[0])) { |
| if (vp8_read(bc, prob[1])) { |
| blockmv.as_int = 0; |
| if (vp8_read(bc, prob[2])) { |
| blockmv.as_mv.row = read_mvcomponent(bc, &mvc[0]) * 2; |
| blockmv.as_mv.row += best_mv.as_mv.row; |
| blockmv.as_mv.col = read_mvcomponent(bc, &mvc[1]) * 2; |
| blockmv.as_mv.col += best_mv.as_mv.col; |
| } |
| } else { |
| blockmv.as_int = abovemv.as_int; |
| } |
| } else { |
| blockmv.as_int = leftmv.as_int; |
| } |
| |
| mbmi->need_to_clamp_mvs |= |
| vp8_check_mv_bounds(&blockmv, mb_to_left_edge, mb_to_right_edge, |
| mb_to_top_edge, mb_to_bottom_edge); |
| |
| { |
| /* Fill (uniform) modes, mvs of jth subset. |
| Must do it here because ensuing subsets can |
| refer back to us via "left" or "above". */ |
| const unsigned char *fill_offset; |
| unsigned int fill_count = mbsplit_fill_count[s]; |
| |
| fill_offset = |
| &mbsplit_fill_offset[s][(unsigned char)j * mbsplit_fill_count[s]]; |
| |
| do { |
| mi->bmi[*fill_offset].mv.as_int = blockmv.as_int; |
| fill_offset++; |
| } while (--fill_count); |
| } |
| |
| } while (++j < num_p); |
| |
| mbmi->partitioning = s; |
| } |
| |
| static void read_mb_modes_mv(VP8D_COMP *pbi, MODE_INFO *mi, |
| MB_MODE_INFO *mbmi) { |
| vp8_reader *const bc = &pbi->mbc[8]; |
| mbmi->ref_frame = (MV_REFERENCE_FRAME)vp8_read(bc, pbi->prob_intra); |
| if (mbmi->ref_frame) { /* inter MB */ |
| enum { CNT_INTRA, CNT_NEAREST, CNT_NEAR, CNT_SPLITMV }; |
| int cnt[4]; |
| int *cntx = cnt; |
| int_mv near_mvs[4]; |
| int_mv *nmv = near_mvs; |
| const int mis = pbi->mb.mode_info_stride; |
| const MODE_INFO *above = mi - mis; |
| const MODE_INFO *left = mi - 1; |
| const MODE_INFO *aboveleft = above - 1; |
| int *ref_frame_sign_bias = pbi->common.ref_frame_sign_bias; |
| |
| mbmi->need_to_clamp_mvs = 0; |
| |
| if (vp8_read(bc, pbi->prob_last)) { |
| mbmi->ref_frame = |
| (MV_REFERENCE_FRAME)((int)(2 + vp8_read(bc, pbi->prob_gf))); |
| } |
| |
| /* Zero accumulators */ |
| nmv[0].as_int = nmv[1].as_int = nmv[2].as_int = 0; |
| cnt[0] = cnt[1] = cnt[2] = cnt[3] = 0; |
| |
| /* Process above */ |
| if (above->mbmi.ref_frame != INTRA_FRAME) { |
| if (above->mbmi.mv.as_int) { |
| (++nmv)->as_int = above->mbmi.mv.as_int; |
| mv_bias(ref_frame_sign_bias[above->mbmi.ref_frame], mbmi->ref_frame, |
| nmv, ref_frame_sign_bias); |
| ++cntx; |
| } |
| |
| *cntx += 2; |
| } |
| |
| /* Process left */ |
| if (left->mbmi.ref_frame != INTRA_FRAME) { |
| if (left->mbmi.mv.as_int) { |
| int_mv this_mv; |
| |
| this_mv.as_int = left->mbmi.mv.as_int; |
| mv_bias(ref_frame_sign_bias[left->mbmi.ref_frame], mbmi->ref_frame, |
| &this_mv, ref_frame_sign_bias); |
| |
| if (this_mv.as_int != nmv->as_int) { |
| (++nmv)->as_int = this_mv.as_int; |
| ++cntx; |
| } |
| |
| *cntx += 2; |
| } else { |
| cnt[CNT_INTRA] += 2; |
| } |
| } |
| |
| /* Process above left */ |
| if (aboveleft->mbmi.ref_frame != INTRA_FRAME) { |
| if (aboveleft->mbmi.mv.as_int) { |
| int_mv this_mv; |
| |
| this_mv.as_int = aboveleft->mbmi.mv.as_int; |
| mv_bias(ref_frame_sign_bias[aboveleft->mbmi.ref_frame], mbmi->ref_frame, |
| &this_mv, ref_frame_sign_bias); |
| |
| if (this_mv.as_int != nmv->as_int) { |
| (++nmv)->as_int = this_mv.as_int; |
| ++cntx; |
| } |
| |
| *cntx += 1; |
| } else { |
| cnt[CNT_INTRA] += 1; |
| } |
| } |
| |
| if (vp8_read(bc, vp8_mode_contexts[cnt[CNT_INTRA]][0])) { |
| /* If we have three distinct MV's ... */ |
| /* See if above-left MV can be merged with NEAREST */ |
| cnt[CNT_NEAREST] += ((cnt[CNT_SPLITMV] > 0) & |
| (nmv->as_int == near_mvs[CNT_NEAREST].as_int)); |
| |
| /* Swap near and nearest if necessary */ |
| if (cnt[CNT_NEAR] > cnt[CNT_NEAREST]) { |
| int tmp; |
| tmp = cnt[CNT_NEAREST]; |
| cnt[CNT_NEAREST] = cnt[CNT_NEAR]; |
| cnt[CNT_NEAR] = tmp; |
| tmp = near_mvs[CNT_NEAREST].as_int; |
| near_mvs[CNT_NEAREST].as_int = near_mvs[CNT_NEAR].as_int; |
| near_mvs[CNT_NEAR].as_int = tmp; |
| } |
| |
| if (vp8_read(bc, vp8_mode_contexts[cnt[CNT_NEAREST]][1])) { |
| if (vp8_read(bc, vp8_mode_contexts[cnt[CNT_NEAR]][2])) { |
| int mb_to_top_edge; |
| int mb_to_bottom_edge; |
| int mb_to_left_edge; |
| int mb_to_right_edge; |
| MV_CONTEXT *const mvc = pbi->common.fc.mvc; |
| int near_index; |
| |
| mb_to_top_edge = pbi->mb.mb_to_top_edge; |
| mb_to_bottom_edge = pbi->mb.mb_to_bottom_edge; |
| mb_to_top_edge -= LEFT_TOP_MARGIN; |
| mb_to_bottom_edge += RIGHT_BOTTOM_MARGIN; |
| mb_to_right_edge = pbi->mb.mb_to_right_edge; |
| mb_to_right_edge += RIGHT_BOTTOM_MARGIN; |
| mb_to_left_edge = pbi->mb.mb_to_left_edge; |
| mb_to_left_edge -= LEFT_TOP_MARGIN; |
| |
| /* Use near_mvs[0] to store the "best" MV */ |
| near_index = CNT_INTRA + (cnt[CNT_NEAREST] >= cnt[CNT_INTRA]); |
| |
| vp8_clamp_mv2(&near_mvs[near_index], &pbi->mb); |
| |
| cnt[CNT_SPLITMV] = |
| ((above->mbmi.mode == SPLITMV) + (left->mbmi.mode == SPLITMV)) * |
| 2 + |
| (aboveleft->mbmi.mode == SPLITMV); |
| |
| if (vp8_read(bc, vp8_mode_contexts[cnt[CNT_SPLITMV]][3])) { |
| decode_split_mv(bc, mi, left, above, mbmi, near_mvs[near_index], |
| mvc, mb_to_left_edge, mb_to_right_edge, |
| mb_to_top_edge, mb_to_bottom_edge); |
| mbmi->mv.as_int = mi->bmi[15].mv.as_int; |
| mbmi->mode = SPLITMV; |
| mbmi->is_4x4 = 1; |
| } else { |
| int_mv *const mbmi_mv = &mbmi->mv; |
| read_mv(bc, &mbmi_mv->as_mv, (const MV_CONTEXT *)mvc); |
| mbmi_mv->as_mv.row += near_mvs[near_index].as_mv.row; |
| mbmi_mv->as_mv.col += near_mvs[near_index].as_mv.col; |
| |
| /* Don't need to check this on NEARMV and NEARESTMV |
| * modes since those modes clamp the MV. The NEWMV mode |
| * does not, so signal to the prediction stage whether |
| * special handling may be required. |
| */ |
| mbmi->need_to_clamp_mvs = |
| vp8_check_mv_bounds(mbmi_mv, mb_to_left_edge, mb_to_right_edge, |
| mb_to_top_edge, mb_to_bottom_edge); |
| mbmi->mode = NEWMV; |
| } |
| } else { |
| mbmi->mode = NEARMV; |
| mbmi->mv.as_int = near_mvs[CNT_NEAR].as_int; |
| vp8_clamp_mv2(&mbmi->mv, &pbi->mb); |
| } |
| } else { |
| mbmi->mode = NEARESTMV; |
| mbmi->mv.as_int = near_mvs[CNT_NEAREST].as_int; |
| vp8_clamp_mv2(&mbmi->mv, &pbi->mb); |
| } |
| } else { |
| mbmi->mode = ZEROMV; |
| mbmi->mv.as_int = 0; |
| } |
| |
| #if CONFIG_ERROR_CONCEALMENT |
| if (pbi->ec_enabled && (mbmi->mode != SPLITMV)) { |
| mi->bmi[0].mv.as_int = mi->bmi[1].mv.as_int = mi->bmi[2].mv.as_int = |
| mi->bmi[3].mv.as_int = mi->bmi[4].mv.as_int = mi->bmi[5].mv.as_int = |
| mi->bmi[6].mv.as_int = mi->bmi[7].mv.as_int = |
| mi->bmi[8].mv.as_int = mi->bmi[9].mv.as_int = |
| mi->bmi[10].mv.as_int = mi->bmi[11].mv.as_int = |
| mi->bmi[12].mv.as_int = mi->bmi[13].mv.as_int = |
| mi->bmi[14].mv.as_int = mi->bmi[15].mv.as_int = |
| mbmi->mv.as_int; |
| } |
| #endif |
| } else { |
| /* required for left and above block mv */ |
| mbmi->mv.as_int = 0; |
| |
| /* MB is intra coded */ |
| if ((mbmi->mode = read_ymode(bc, pbi->common.fc.ymode_prob)) == B_PRED) { |
| int j = 0; |
| mbmi->is_4x4 = 1; |
| do { |
| mi->bmi[j].as_mode = read_bmode(bc, pbi->common.fc.bmode_prob); |
| } while (++j < 16); |
| } |
| |
| mbmi->uv_mode = read_uv_mode(bc, pbi->common.fc.uv_mode_prob); |
| } |
| } |
| |
| static void read_mb_features(vp8_reader *r, MB_MODE_INFO *mi, MACROBLOCKD *x) { |
| /* Is segmentation enabled */ |
| if (x->segmentation_enabled && x->update_mb_segmentation_map) { |
| /* If so then read the segment id. */ |
| if (vp8_read(r, x->mb_segment_tree_probs[0])) { |
| mi->segment_id = |
| (unsigned char)(2 + vp8_read(r, x->mb_segment_tree_probs[2])); |
| } else { |
| mi->segment_id = |
| (unsigned char)(vp8_read(r, x->mb_segment_tree_probs[1])); |
| } |
| } |
| } |
| |
| static void decode_mb_mode_mvs(VP8D_COMP *pbi, MODE_INFO *mi) { |
| /* Read the Macroblock segmentation map if it is being updated explicitly |
| * this frame (reset to 0 above by default) |
| * By default on a key frame reset all MBs to segment 0 |
| */ |
| if (pbi->mb.update_mb_segmentation_map) { |
| read_mb_features(&pbi->mbc[8], &mi->mbmi, &pbi->mb); |
| } else if (pbi->common.frame_type == KEY_FRAME) { |
| mi->mbmi.segment_id = 0; |
| } |
| |
| /* Read the macroblock coeff skip flag if this feature is in use, |
| * else default to 0 */ |
| if (pbi->common.mb_no_coeff_skip) { |
| mi->mbmi.mb_skip_coeff = vp8_read(&pbi->mbc[8], pbi->prob_skip_false); |
| } else { |
| mi->mbmi.mb_skip_coeff = 0; |
| } |
| |
| mi->mbmi.is_4x4 = 0; |
| if (pbi->common.frame_type == KEY_FRAME) { |
| read_kf_modes(pbi, mi); |
| } else { |
| read_mb_modes_mv(pbi, mi, &mi->mbmi); |
| } |
| } |
| |
| void vp8_decode_mode_mvs(VP8D_COMP *pbi) { |
| MODE_INFO *mi = pbi->common.mi; |
| int mb_row = -1; |
| int mb_to_right_edge_start; |
| |
| mb_mode_mv_init(pbi); |
| |
| pbi->mb.mb_to_top_edge = 0; |
| pbi->mb.mb_to_bottom_edge = ((pbi->common.mb_rows - 1) * 16) << 3; |
| mb_to_right_edge_start = ((pbi->common.mb_cols - 1) * 16) << 3; |
| |
| while (++mb_row < pbi->common.mb_rows) { |
| int mb_col = -1; |
| |
| pbi->mb.mb_to_left_edge = 0; |
| pbi->mb.mb_to_right_edge = mb_to_right_edge_start; |
| |
| while (++mb_col < pbi->common.mb_cols) { |
| #if CONFIG_ERROR_CONCEALMENT |
| int mb_num = mb_row * pbi->common.mb_cols + mb_col; |
| #endif |
| |
| decode_mb_mode_mvs(pbi, mi); |
| |
| #if CONFIG_ERROR_CONCEALMENT |
| /* look for corruption. set mvs_corrupt_from_mb to the current |
| * mb_num if the frame is corrupt from this macroblock. */ |
| if (vp8dx_bool_error(&pbi->mbc[8]) && |
| mb_num < (int)pbi->mvs_corrupt_from_mb) { |
| pbi->mvs_corrupt_from_mb = mb_num; |
| /* no need to continue since the partition is corrupt from |
| * here on. |
| */ |
| return; |
| } |
| #endif |
| |
| pbi->mb.mb_to_left_edge -= (16 << 3); |
| pbi->mb.mb_to_right_edge -= (16 << 3); |
| mi++; /* next macroblock */ |
| } |
| pbi->mb.mb_to_top_edge -= (16 << 3); |
| pbi->mb.mb_to_bottom_edge -= (16 << 3); |
| |
| mi++; /* skip left predictor each row */ |
| } |
| } |
