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 VPX_VP9_COMMON_VP9_PRED_COMMON_H_
12 #define VPX_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
get_segment_id(const VP9_COMMON * cm,const uint8_t * segment_ids,BLOCK_SIZE bsize,int mi_row,int mi_col)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
vp9_get_pred_context_seg_id(const MACROBLOCKD * xd)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
vp9_get_pred_prob_seg_id(const struct segmentation * seg,const MACROBLOCKD * xd)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
vp9_get_skip_context(const MACROBLOCKD * xd)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
vp9_get_skip_prob(const VP9_COMMON * cm,const MACROBLOCKD * xd)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
get_pred_context_switchable_interp(const MACROBLOCKD * xd)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
get_intra_inter_context(const MACROBLOCKD * xd)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
vp9_get_intra_inter_prob(const VP9_COMMON * cm,const MACROBLOCKD * xd)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
vp9_get_reference_mode_prob(const VP9_COMMON * cm,const MACROBLOCKD * xd)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
vp9_get_pred_prob_comp_ref_p(const VP9_COMMON * cm,const MACROBLOCKD * xd)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
vp9_get_pred_prob_single_ref_p1(const VP9_COMMON * cm,const MACROBLOCKD * xd)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
vp9_get_pred_prob_single_ref_p2(const VP9_COMMON * cm,const MACROBLOCKD * xd)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 int vp9_compound_reference_allowed(const VP9_COMMON *cm);
149
150 void vp9_setup_compound_reference_mode(VP9_COMMON *cm);
151
152 // Returns a context number for the given MB prediction signal
153 // The mode info data structure has a one element border above and to the
154 // left of the entries corresponding to real blocks.
155 // The prediction flags in these dummy entries are initialized to 0.
get_tx_size_context(const MACROBLOCKD * xd)156 static INLINE int get_tx_size_context(const MACROBLOCKD *xd) {
157 const int max_tx_size = max_txsize_lookup[xd->mi[0]->sb_type];
158 const MODE_INFO *const above_mi = xd->above_mi;
159 const MODE_INFO *const left_mi = xd->left_mi;
160 const int has_above = !!above_mi;
161 const int has_left = !!left_mi;
162 int above_ctx =
163 (has_above && !above_mi->skip) ? (int)above_mi->tx_size : max_tx_size;
164 int left_ctx =
165 (has_left && !left_mi->skip) ? (int)left_mi->tx_size : max_tx_size;
166 if (!has_left) left_ctx = above_ctx;
167
168 if (!has_above) above_ctx = left_ctx;
169
170 return (above_ctx + left_ctx) > max_tx_size;
171 }
172
get_tx_probs(TX_SIZE max_tx_size,int ctx,const struct tx_probs * tx_probs)173 static INLINE const vpx_prob *get_tx_probs(TX_SIZE max_tx_size, int ctx,
174 const struct tx_probs *tx_probs) {
175 switch (max_tx_size) {
176 case TX_8X8: return tx_probs->p8x8[ctx];
177 case TX_16X16: return tx_probs->p16x16[ctx];
178 case TX_32X32: return tx_probs->p32x32[ctx];
179 default: assert(0 && "Invalid max_tx_size."); return NULL;
180 }
181 }
182
get_tx_counts(TX_SIZE max_tx_size,int ctx,struct tx_counts * tx_counts)183 static INLINE unsigned int *get_tx_counts(TX_SIZE max_tx_size, int ctx,
184 struct tx_counts *tx_counts) {
185 switch (max_tx_size) {
186 case TX_8X8: return tx_counts->p8x8[ctx];
187 case TX_16X16: return tx_counts->p16x16[ctx];
188 case TX_32X32: return tx_counts->p32x32[ctx];
189 default: assert(0 && "Invalid max_tx_size."); return NULL;
190 }
191 }
192
193 #ifdef __cplusplus
194 } // extern "C"
195 #endif
196
197 #endif // VPX_VP9_COMMON_VP9_PRED_COMMON_H_
198