vp9_findnearmv.h 5.75 KB
Newer Older
John Koleszar's avatar
John Koleszar committed
1
/*
2
 *  Copyright (c) 2010 The WebM project authors. All Rights Reserved.
John Koleszar's avatar
John Koleszar committed
3
 *
4
 *  Use of this source code is governed by a BSD-style license
5
6
 *  that can be found in the LICENSE file in the root of the source
 *  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.
John Koleszar's avatar
John Koleszar committed
9
10
11
 */


12
13
#ifndef VP9_COMMON_VP9_FINDNEARMV_H_
#define VP9_COMMON_VP9_FINDNEARMV_H_
John Koleszar's avatar
John Koleszar committed
14

15
16
17
18
#include "vp9/common/vp9_mv.h"
#include "vp9/common/vp9_blockd.h"
#include "vp9/common/vp9_treecoder.h"
#include "vp9/common/vp9_onyxc_int.h"
John Koleszar's avatar
John Koleszar committed
19

Christian Duvivier's avatar
Christian Duvivier committed
20
21
22
23
/* check a list of motion vectors by sad score using a number rows of pixels
 * above and a number cols of pixels in the left to select the one with best
 * score to use as ref motion vector
 */
24
void vp9_find_best_ref_mvs(MACROBLOCKD *xd,
25
                           uint8_t *ref_y_buffer,
Christian Duvivier's avatar
Christian Duvivier committed
26
                           int ref_y_stride,
Paul Wilkins's avatar
Paul Wilkins committed
27
                           int_mv *mvlist,
Christian Duvivier's avatar
Christian Duvivier committed
28
29
                           int_mv *nearest,
                           int_mv *near);
Yunqing Wang's avatar
Yunqing Wang committed
30

31
32
static void mv_bias(int refmb_ref_frame_sign_bias, int refframe,
                    int_mv *mvp, const int *ref_frame_sign_bias) {
John Koleszar's avatar
John Koleszar committed
33
34
35
36
37
38
39
  MV xmv;
  xmv = mvp->as_mv;

  if (refmb_ref_frame_sign_bias != ref_frame_sign_bias[refframe]) {
    xmv.row *= -1;
    xmv.col *= -1;
  }
Yunqing Wang's avatar
Yunqing Wang committed
40

John Koleszar's avatar
John Koleszar committed
41
  mvp->as_mv = xmv;
Yunqing Wang's avatar
Yunqing Wang committed
42
43
44
45
}

#define LEFT_TOP_MARGIN (16 << 3)
#define RIGHT_BOTTOM_MARGIN (16 << 3)
Scott LaVarnway's avatar
Scott LaVarnway committed
46

47
48
49
50
51
static void clamp_mv(int_mv *mv,
                     int mb_to_left_edge,
                     int mb_to_right_edge,
                     int mb_to_top_edge,
                     int mb_to_bottom_edge) {
John Koleszar's avatar
John Koleszar committed
52
53
54
55
56
57
58
59
  mv->as_mv.col = (mv->as_mv.col < mb_to_left_edge) ?
                  mb_to_left_edge : mv->as_mv.col;
  mv->as_mv.col = (mv->as_mv.col > mb_to_right_edge) ?
                  mb_to_right_edge : mv->as_mv.col;
  mv->as_mv.row = (mv->as_mv.row < mb_to_top_edge) ?
                  mb_to_top_edge : mv->as_mv.row;
  mv->as_mv.row = (mv->as_mv.row > mb_to_bottom_edge) ?
                  mb_to_bottom_edge : mv->as_mv.row;
Scott LaVarnway's avatar
Scott LaVarnway committed
60
}
61

62
63
64
65
66
67
static void clamp_mv2(int_mv *mv, const MACROBLOCKD *xd) {
  clamp_mv(mv,
           xd->mb_to_left_edge - LEFT_TOP_MARGIN,
           xd->mb_to_right_edge + RIGHT_BOTTOM_MARGIN,
           xd->mb_to_top_edge - LEFT_TOP_MARGIN,
           xd->mb_to_bottom_edge + RIGHT_BOTTOM_MARGIN);
68
69
}

70
71
72
73
74
static unsigned int check_mv_bounds(int_mv *mv,
                                    int mb_to_left_edge,
                                    int mb_to_right_edge,
                                    int mb_to_top_edge,
                                    int mb_to_bottom_edge) {
75
76
77
78
  return (mv->as_mv.col < mb_to_left_edge) ||
         (mv->as_mv.col > mb_to_right_edge) ||
         (mv->as_mv.row < mb_to_top_edge) ||
         (mv->as_mv.row > mb_to_bottom_edge);
Yunqing Wang's avatar
Yunqing Wang committed
79
80
}

81
vp9_prob *vp9_mv_ref_probs(VP9_COMMON *pc,
82
                           vp9_prob p[VP9_MVREFS - 1],
Paul Wilkins's avatar
Paul Wilkins committed
83
                           const int context);
John Koleszar's avatar
John Koleszar committed
84

85
extern const uint8_t vp9_mbsplit_offset[4][16];
John Koleszar's avatar
John Koleszar committed
86

John Koleszar's avatar
John Koleszar committed
87
88
89
90
static int left_block_mv(const MODE_INFO *cur_mb, int b) {
  if (!(b & 3)) {
    /* On L edge, get from MB to left of us */
    --cur_mb;
Scott LaVarnway's avatar
Scott LaVarnway committed
91

John Koleszar's avatar
John Koleszar committed
92
    if (cur_mb->mbmi.mode != SPLITMV)
93
      return cur_mb->mbmi.mv[0].as_int;
John Koleszar's avatar
John Koleszar committed
94
95
    b += 4;
  }
Scott LaVarnway's avatar
Scott LaVarnway committed
96

John Koleszar's avatar
John Koleszar committed
97
  return (cur_mb->bmi + b - 1)->as_mv.first.as_int;
98
99
}

John Koleszar's avatar
John Koleszar committed
100
101
102
103
static int left_block_second_mv(const MODE_INFO *cur_mb, int b) {
  if (!(b & 3)) {
    /* On L edge, get from MB to left of us */
    --cur_mb;
104

John Koleszar's avatar
John Koleszar committed
105
    if (cur_mb->mbmi.mode != SPLITMV)
106
107
      return cur_mb->mbmi.second_ref_frame > 0 ?
          cur_mb->mbmi.mv[1].as_int : cur_mb->mbmi.mv[0].as_int;
John Koleszar's avatar
John Koleszar committed
108
109
    b += 4;
  }
110

111
112
113
  return cur_mb->mbmi.second_ref_frame > 0 ?
      (cur_mb->bmi + b - 1)->as_mv.second.as_int :
      (cur_mb->bmi + b - 1)->as_mv.first.as_int;
Scott LaVarnway's avatar
Scott LaVarnway committed
114
115
}

John Koleszar's avatar
John Koleszar committed
116
117
118
119
static int above_block_mv(const MODE_INFO *cur_mb, int b, int mi_stride) {
  if (!(b >> 2)) {
    /* On top edge, get from MB above us */
    cur_mb -= mi_stride;
Scott LaVarnway's avatar
Scott LaVarnway committed
120

John Koleszar's avatar
John Koleszar committed
121
    if (cur_mb->mbmi.mode != SPLITMV)
122
      return cur_mb->mbmi.mv[0].as_int;
John Koleszar's avatar
John Koleszar committed
123
124
    b += 16;
  }
Scott LaVarnway's avatar
Scott LaVarnway committed
125

John Koleszar's avatar
John Koleszar committed
126
  return (cur_mb->bmi + b - 4)->as_mv.first.as_int;
Scott LaVarnway's avatar
Scott LaVarnway committed
127
}
128

John Koleszar's avatar
John Koleszar committed
129
130
131
132
static int above_block_second_mv(const MODE_INFO *cur_mb, int b, int mi_stride) {
  if (!(b >> 2)) {
    /* On top edge, get from MB above us */
    cur_mb -= mi_stride;
133

John Koleszar's avatar
John Koleszar committed
134
    if (cur_mb->mbmi.mode != SPLITMV)
135
136
      return cur_mb->mbmi.second_ref_frame > 0 ?
          cur_mb->mbmi.mv[1].as_int : cur_mb->mbmi.mv[0].as_int;
John Koleszar's avatar
John Koleszar committed
137
138
    b += 16;
  }
139

140
141
142
  return cur_mb->mbmi.second_ref_frame > 0 ?
      (cur_mb->bmi + b - 4)->as_mv.second.as_int :
      (cur_mb->bmi + b - 4)->as_mv.first.as_int;
143
144
}

John Koleszar's avatar
John Koleszar committed
145
146
147
148
static B_PREDICTION_MODE left_block_mode(const MODE_INFO *cur_mb, int b) {
  if (!(b & 3)) {
    /* On L edge, get from MB to left of us */
    --cur_mb;
149
150
151
152

    if (cur_mb->mbmi.mode < I8X8_PRED) {
      return pred_mode_conv(cur_mb->mbmi.mode);
    } else if (cur_mb->mbmi.mode == I8X8_PRED) {
Frank Galligan's avatar
Frank Galligan committed
153
154
      return pred_mode_conv(
          (MB_PREDICTION_MODE)(cur_mb->bmi + 3 + b)->as_mode.first);
155
156
157
158
    } else if (cur_mb->mbmi.mode == B_PRED) {
      return ((cur_mb->bmi + 3 + b)->as_mode.first);
    } else {
      return B_DC_PRED;
Scott LaVarnway's avatar
Scott LaVarnway committed
159
    }
John Koleszar's avatar
John Koleszar committed
160
161
  }
  return (cur_mb->bmi + b - 1)->as_mode.first;
Scott LaVarnway's avatar
Scott LaVarnway committed
162
163
}

164
165
static B_PREDICTION_MODE above_block_mode(const MODE_INFO *cur_mb,
                                          int b, int mi_stride) {
John Koleszar's avatar
John Koleszar committed
166
167
168
169
  if (!(b >> 2)) {
    /* On top edge, get from MB above us */
    cur_mb -= mi_stride;

170
171
172
    if (cur_mb->mbmi.mode < I8X8_PRED) {
      return pred_mode_conv(cur_mb->mbmi.mode);
    } else if (cur_mb->mbmi.mode == I8X8_PRED) {
Frank Galligan's avatar
Frank Galligan committed
173
174
      return pred_mode_conv(
          (MB_PREDICTION_MODE)(cur_mb->bmi + 12 + b)->as_mode.first);
175
176
177
178
    } else if (cur_mb->mbmi.mode == B_PRED) {
      return ((cur_mb->bmi + 12 + b)->as_mode.first);
    } else {
      return B_DC_PRED;
Scott LaVarnway's avatar
Scott LaVarnway committed
179
    }
John Koleszar's avatar
John Koleszar committed
180
  }
Scott LaVarnway's avatar
Scott LaVarnway committed
181

John Koleszar's avatar
John Koleszar committed
182
  return (cur_mb->bmi + b - 4)->as_mode.first;
Scott LaVarnway's avatar
Scott LaVarnway committed
183
}
184

185
#endif  // VP9_COMMON_VP9_FINDNEARMV_H_