1 /* 2 * Copyright (c) 2012 The WebM project authors. All Rights Reserved. 3 * 4 * Use of this source code is governed by a BSD-style license 5 * that can be found in the LICENSE file in the root of the source 6 * tree. An additional intellectual property rights grant can be found 7 * in the file PATENTS. All contributing project authors may 8 * be found in the AUTHORS file in the root of the source tree. 9 */ 10 11 #ifndef VP9_COMMON_VP9_PRED_COMMON_H_ 12 #define VP9_COMMON_VP9_PRED_COMMON_H_ 13 14 #include "vp9/common/vp9_blockd.h" 15 #include "vp9/common/vp9_onyxc_int.h" 16 #include "vpx_dsp/vpx_dsp_common.h" 17 18 #ifdef __cplusplus 19 extern "C" { 20 #endif 21 22 static INLINE int get_segment_id(const VP9_COMMON *cm, 23 const uint8_t *segment_ids, BLOCK_SIZE bsize, 24 int mi_row, int mi_col) { 25 const int mi_offset = mi_row * cm->mi_cols + mi_col; 26 const int bw = num_8x8_blocks_wide_lookup[bsize]; 27 const int bh = num_8x8_blocks_high_lookup[bsize]; 28 const int xmis = VPXMIN(cm->mi_cols - mi_col, bw); 29 const int ymis = VPXMIN(cm->mi_rows - mi_row, bh); 30 int x, y, segment_id = MAX_SEGMENTS; 31 32 for (y = 0; y < ymis; ++y) 33 for (x = 0; x < xmis; ++x) 34 segment_id = 35 VPXMIN(segment_id, segment_ids[mi_offset + y * cm->mi_cols + x]); 36 37 assert(segment_id >= 0 && segment_id < MAX_SEGMENTS); 38 return segment_id; 39 } 40 41 static INLINE int vp9_get_pred_context_seg_id(const MACROBLOCKD *xd) { 42 const MODE_INFO *const above_mi = xd->above_mi; 43 const MODE_INFO *const left_mi = xd->left_mi; 44 const int above_sip = (above_mi != NULL) ? above_mi->seg_id_predicted : 0; 45 const int left_sip = (left_mi != NULL) ? left_mi->seg_id_predicted : 0; 46 47 return above_sip + left_sip; 48 } 49 50 static INLINE vpx_prob vp9_get_pred_prob_seg_id(const struct segmentation *seg, 51 const MACROBLOCKD *xd) { 52 return seg->pred_probs[vp9_get_pred_context_seg_id(xd)]; 53 } 54 55 static INLINE int vp9_get_skip_context(const MACROBLOCKD *xd) { 56 const MODE_INFO *const above_mi = xd->above_mi; 57 const MODE_INFO *const left_mi = xd->left_mi; 58 const int above_skip = (above_mi != NULL) ? above_mi->skip : 0; 59 const int left_skip = (left_mi != NULL) ? left_mi->skip : 0; 60 return above_skip + left_skip; 61 } 62 63 static INLINE vpx_prob vp9_get_skip_prob(const VP9_COMMON *cm, 64 const MACROBLOCKD *xd) { 65 return cm->fc->skip_probs[vp9_get_skip_context(xd)]; 66 } 67 68 // Returns a context number for the given MB prediction signal 69 static INLINE int get_pred_context_switchable_interp(const MACROBLOCKD *xd) { 70 // Note: 71 // The mode info data structure has a one element border above and to the 72 // left of the entries corresponding to real macroblocks. 73 // The prediction flags in these dummy entries are initialized to 0. 74 const MODE_INFO *const left_mi = xd->left_mi; 75 const int left_type = left_mi ? left_mi->interp_filter : SWITCHABLE_FILTERS; 76 const MODE_INFO *const above_mi = xd->above_mi; 77 const int above_type = 78 above_mi ? above_mi->interp_filter : SWITCHABLE_FILTERS; 79 80 if (left_type == above_type) 81 return left_type; 82 else if (left_type == SWITCHABLE_FILTERS) 83 return above_type; 84 else if (above_type == SWITCHABLE_FILTERS) 85 return left_type; 86 else 87 return SWITCHABLE_FILTERS; 88 } 89 90 // The mode info data structure has a one element border above and to the 91 // left of the entries corresponding to real macroblocks. 92 // The prediction flags in these dummy entries are initialized to 0. 93 // 0 - inter/inter, inter/--, --/inter, --/-- 94 // 1 - intra/inter, inter/intra 95 // 2 - intra/--, --/intra 96 // 3 - intra/intra 97 static INLINE int get_intra_inter_context(const MACROBLOCKD *xd) { 98 const MODE_INFO *const above_mi = xd->above_mi; 99 const MODE_INFO *const left_mi = xd->left_mi; 100 const int has_above = !!above_mi; 101 const int has_left = !!left_mi; 102 103 if (has_above && has_left) { // both edges available 104 const int above_intra = !is_inter_block(above_mi); 105 const int left_intra = !is_inter_block(left_mi); 106 return left_intra && above_intra ? 3 : left_intra || above_intra; 107 } else if (has_above || has_left) { // one edge available 108 return 2 * !is_inter_block(has_above ? above_mi : left_mi); 109 } 110 return 0; 111 } 112 113 static INLINE vpx_prob vp9_get_intra_inter_prob(const VP9_COMMON *cm, 114 const MACROBLOCKD *xd) { 115 return cm->fc->intra_inter_prob[get_intra_inter_context(xd)]; 116 } 117 118 int vp9_get_reference_mode_context(const VP9_COMMON *cm, const MACROBLOCKD *xd); 119 120 static INLINE vpx_prob vp9_get_reference_mode_prob(const VP9_COMMON *cm, 121 const MACROBLOCKD *xd) { 122 return cm->fc->comp_inter_prob[vp9_get_reference_mode_context(cm, xd)]; 123 } 124 125 int vp9_get_pred_context_comp_ref_p(const VP9_COMMON *cm, 126 const MACROBLOCKD *xd); 127 128 static INLINE vpx_prob vp9_get_pred_prob_comp_ref_p(const VP9_COMMON *cm, 129 const MACROBLOCKD *xd) { 130 const int pred_context = vp9_get_pred_context_comp_ref_p(cm, xd); 131 return cm->fc->comp_ref_prob[pred_context]; 132 } 133 134 int vp9_get_pred_context_single_ref_p1(const MACROBLOCKD *xd); 135 136 static INLINE vpx_prob vp9_get_pred_prob_single_ref_p1(const VP9_COMMON *cm, 137 const MACROBLOCKD *xd) { 138 return cm->fc->single_ref_prob[vp9_get_pred_context_single_ref_p1(xd)][0]; 139 } 140 141 int vp9_get_pred_context_single_ref_p2(const MACROBLOCKD *xd); 142 143 static INLINE vpx_prob vp9_get_pred_prob_single_ref_p2(const VP9_COMMON *cm, 144 const MACROBLOCKD *xd) { 145 return cm->fc->single_ref_prob[vp9_get_pred_context_single_ref_p2(xd)][1]; 146 } 147 148 // Returns a context number for the given MB prediction signal 149 // The mode info data structure has a one element border above and to the 150 // left of the entries corresponding to real blocks. 151 // The prediction flags in these dummy entries are initialized to 0. 152 static INLINE int get_tx_size_context(const MACROBLOCKD *xd) { 153 const int max_tx_size = max_txsize_lookup[xd->mi[0]->sb_type]; 154 const MODE_INFO *const above_mi = xd->above_mi; 155 const MODE_INFO *const left_mi = xd->left_mi; 156 const int has_above = !!above_mi; 157 const int has_left = !!left_mi; 158 int above_ctx = 159 (has_above && !above_mi->skip) ? (int)above_mi->tx_size : max_tx_size; 160 int left_ctx = 161 (has_left && !left_mi->skip) ? (int)left_mi->tx_size : max_tx_size; 162 if (!has_left) left_ctx = above_ctx; 163 164 if (!has_above) above_ctx = left_ctx; 165 166 return (above_ctx + left_ctx) > max_tx_size; 167 } 168 169 static INLINE const vpx_prob *get_tx_probs(TX_SIZE max_tx_size, int ctx, 170 const struct tx_probs *tx_probs) { 171 switch (max_tx_size) { 172 case TX_8X8: return tx_probs->p8x8[ctx]; 173 case TX_16X16: return tx_probs->p16x16[ctx]; 174 case TX_32X32: return tx_probs->p32x32[ctx]; 175 default: assert(0 && "Invalid max_tx_size."); return NULL; 176 } 177 } 178 179 static INLINE const vpx_prob *get_tx_probs2(TX_SIZE max_tx_size, 180 const MACROBLOCKD *xd, 181 const struct tx_probs *tx_probs) { 182 return get_tx_probs(max_tx_size, get_tx_size_context(xd), tx_probs); 183 } 184 185 static INLINE unsigned int *get_tx_counts(TX_SIZE max_tx_size, int ctx, 186 struct tx_counts *tx_counts) { 187 switch (max_tx_size) { 188 case TX_8X8: return tx_counts->p8x8[ctx]; 189 case TX_16X16: return tx_counts->p16x16[ctx]; 190 case TX_32X32: return tx_counts->p32x32[ctx]; 191 default: assert(0 && "Invalid max_tx_size."); return NULL; 192 } 193 } 194 195 #ifdef __cplusplus 196 } // extern "C" 197 #endif 198 199 #endif // VP9_COMMON_VP9_PRED_COMMON_H_ 200
