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 
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,
24                                  BLOCK_SIZE bsize, 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) ?
45                         above_mi->mbmi.seg_id_predicted : 0;
46   const int left_sip = (left_mi != NULL) ? left_mi->mbmi.seg_id_predicted : 0;
47 
48   return above_sip + left_sip;
49 }
50 
vp9_get_pred_prob_seg_id(const struct segmentation * seg,const MACROBLOCKD * xd)51 static INLINE vpx_prob vp9_get_pred_prob_seg_id(const struct segmentation *seg,
52                                                 const MACROBLOCKD *xd) {
53   return seg->pred_probs[vp9_get_pred_context_seg_id(xd)];
54 }
55 
vp9_get_skip_context(const MACROBLOCKD * xd)56 static INLINE int vp9_get_skip_context(const MACROBLOCKD *xd) {
57   const MODE_INFO *const above_mi = xd->above_mi;
58   const MODE_INFO *const left_mi = xd->left_mi;
59   const int above_skip = (above_mi != NULL) ? above_mi->mbmi.skip : 0;
60   const int left_skip = (left_mi != NULL) ? left_mi->mbmi.skip : 0;
61   return above_skip + left_skip;
62 }
63 
vp9_get_skip_prob(const VP9_COMMON * cm,const MACROBLOCKD * xd)64 static INLINE vpx_prob vp9_get_skip_prob(const VP9_COMMON *cm,
65                                          const MACROBLOCKD *xd) {
66   return cm->fc->skip_probs[vp9_get_skip_context(xd)];
67 }
68 
69 int vp9_get_pred_context_switchable_interp(const MACROBLOCKD *xd);
70 
71 int vp9_get_intra_inter_context(const MACROBLOCKD *xd);
72 
vp9_get_intra_inter_prob(const VP9_COMMON * cm,const MACROBLOCKD * xd)73 static INLINE vpx_prob vp9_get_intra_inter_prob(const VP9_COMMON *cm,
74                                                 const MACROBLOCKD *xd) {
75   return cm->fc->intra_inter_prob[vp9_get_intra_inter_context(xd)];
76 }
77 
78 int vp9_get_reference_mode_context(const VP9_COMMON *cm, const MACROBLOCKD *xd);
79 
vp9_get_reference_mode_prob(const VP9_COMMON * cm,const MACROBLOCKD * xd)80 static INLINE vpx_prob vp9_get_reference_mode_prob(const VP9_COMMON *cm,
81                                                    const MACROBLOCKD *xd) {
82   return cm->fc->comp_inter_prob[vp9_get_reference_mode_context(cm, xd)];
83 }
84 
85 int vp9_get_pred_context_comp_ref_p(const VP9_COMMON *cm,
86                                     const MACROBLOCKD *xd);
87 
vp9_get_pred_prob_comp_ref_p(const VP9_COMMON * cm,const MACROBLOCKD * xd)88 static INLINE vpx_prob vp9_get_pred_prob_comp_ref_p(const VP9_COMMON *cm,
89                                                     const MACROBLOCKD *xd) {
90   const int pred_context = vp9_get_pred_context_comp_ref_p(cm, xd);
91   return cm->fc->comp_ref_prob[pred_context];
92 }
93 
94 int vp9_get_pred_context_single_ref_p1(const MACROBLOCKD *xd);
95 
vp9_get_pred_prob_single_ref_p1(const VP9_COMMON * cm,const MACROBLOCKD * xd)96 static INLINE vpx_prob vp9_get_pred_prob_single_ref_p1(const VP9_COMMON *cm,
97                                                        const MACROBLOCKD *xd) {
98   return cm->fc->single_ref_prob[vp9_get_pred_context_single_ref_p1(xd)][0];
99 }
100 
101 int vp9_get_pred_context_single_ref_p2(const MACROBLOCKD *xd);
102 
vp9_get_pred_prob_single_ref_p2(const VP9_COMMON * cm,const MACROBLOCKD * xd)103 static INLINE vpx_prob vp9_get_pred_prob_single_ref_p2(const VP9_COMMON *cm,
104                                                        const MACROBLOCKD *xd) {
105   return cm->fc->single_ref_prob[vp9_get_pred_context_single_ref_p2(xd)][1];
106 }
107 
108 // Returns a context number for the given MB prediction signal
109 // The mode info data structure has a one element border above and to the
110 // left of the entries corresponding to real blocks.
111 // The prediction flags in these dummy entries are initialized to 0.
get_tx_size_context(const MACROBLOCKD * xd)112 static INLINE int get_tx_size_context(const MACROBLOCKD *xd) {
113   const int max_tx_size = max_txsize_lookup[xd->mi[0]->mbmi.sb_type];
114   const MB_MODE_INFO *const above_mbmi = xd->above_mbmi;
115   const MB_MODE_INFO *const left_mbmi = xd->left_mbmi;
116   const int has_above = xd->up_available;
117   const int has_left = xd->left_available;
118   int above_ctx = (has_above && !above_mbmi->skip) ? (int)above_mbmi->tx_size
119                                                    : max_tx_size;
120   int left_ctx = (has_left && !left_mbmi->skip) ? (int)left_mbmi->tx_size
121                                                 : max_tx_size;
122   if (!has_left)
123     left_ctx = above_ctx;
124 
125   if (!has_above)
126     above_ctx = left_ctx;
127 
128   return (above_ctx + left_ctx) > max_tx_size;
129 }
130 
get_tx_probs(TX_SIZE max_tx_size,int ctx,const struct tx_probs * tx_probs)131 static INLINE const vpx_prob *get_tx_probs(TX_SIZE max_tx_size, int ctx,
132                                            const struct tx_probs *tx_probs) {
133   switch (max_tx_size) {
134     case TX_8X8:
135       return tx_probs->p8x8[ctx];
136     case TX_16X16:
137       return tx_probs->p16x16[ctx];
138     case TX_32X32:
139       return tx_probs->p32x32[ctx];
140     default:
141       assert(0 && "Invalid max_tx_size.");
142       return NULL;
143   }
144 }
145 
get_tx_probs2(TX_SIZE max_tx_size,const MACROBLOCKD * xd,const struct tx_probs * tx_probs)146 static INLINE const vpx_prob *get_tx_probs2(TX_SIZE max_tx_size,
147                                             const MACROBLOCKD *xd,
148                                             const struct tx_probs *tx_probs) {
149   return get_tx_probs(max_tx_size, get_tx_size_context(xd), tx_probs);
150 }
151 
get_tx_counts(TX_SIZE max_tx_size,int ctx,struct tx_counts * tx_counts)152 static INLINE unsigned int *get_tx_counts(TX_SIZE max_tx_size, int ctx,
153                                           struct tx_counts *tx_counts) {
154   switch (max_tx_size) {
155     case TX_8X8:
156       return tx_counts->p8x8[ctx];
157     case TX_16X16:
158       return tx_counts->p16x16[ctx];
159     case TX_32X32:
160       return tx_counts->p32x32[ctx];
161     default:
162       assert(0 && "Invalid max_tx_size.");
163       return NULL;
164   }
165 }
166 
167 #ifdef __cplusplus
168 }  // extern "C"
169 #endif
170 
171 #endif  // VP9_COMMON_VP9_PRED_COMMON_H_
172