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1 /* | 1 /* |
2 * Copyright (c) 2012 The WebM project authors. All Rights Reserved. | 2 * Copyright (c) 2012 The WebM project authors. All Rights Reserved. |
3 * | 3 * |
4 * Use of this source code is governed by a BSD-style license | 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 | 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 | 6 * tree. An additional intellectual property rights grant can be found |
7 * in the file PATENTS. All contributing project authors may | 7 * in the file PATENTS. All contributing project authors may |
8 * be found in the AUTHORS file in the root of the source tree. | 8 * be found in the AUTHORS file in the root of the source tree. |
9 */ | 9 */ |
10 #ifndef VP9_COMMON_VP9_MVREF_COMMON_H_ | 10 #ifndef VP9_COMMON_VP9_MVREF_COMMON_H_ |
11 #define VP9_COMMON_VP9_MVREF_COMMON_H_ | 11 #define VP9_COMMON_VP9_MVREF_COMMON_H_ |
12 | 12 |
13 #include "vp9/common/vp9_onyxc_int.h" | 13 #include "vp9/common/vp9_onyxc_int.h" |
14 #include "vp9/common/vp9_blockd.h" | 14 #include "vp9/common/vp9_blockd.h" |
15 | 15 |
16 #ifdef __cplusplus | 16 #ifdef __cplusplus |
17 extern "C" { | 17 extern "C" { |
18 #endif | 18 #endif |
19 | 19 |
20 #define LEFT_TOP_MARGIN ((VP9_ENC_BORDER_IN_PIXELS - VP9_INTERP_EXTEND) << 3) | 20 #define LEFT_TOP_MARGIN ((VP9_ENC_BORDER_IN_PIXELS - VP9_INTERP_EXTEND) << 3) |
21 #define RIGHT_BOTTOM_MARGIN ((VP9_ENC_BORDER_IN_PIXELS -\ | 21 #define RIGHT_BOTTOM_MARGIN ((VP9_ENC_BORDER_IN_PIXELS -\ |
22 VP9_INTERP_EXTEND) << 3) | 22 VP9_INTERP_EXTEND) << 3) |
23 | 23 |
| 24 #define MVREF_NEIGHBOURS 8 |
| 25 |
| 26 typedef struct position { |
| 27 int row; |
| 28 int col; |
| 29 } POSITION; |
| 30 |
| 31 typedef enum { |
| 32 BOTH_ZERO = 0, |
| 33 ZERO_PLUS_PREDICTED = 1, |
| 34 BOTH_PREDICTED = 2, |
| 35 NEW_PLUS_NON_INTRA = 3, |
| 36 BOTH_NEW = 4, |
| 37 INTRA_PLUS_NON_INTRA = 5, |
| 38 BOTH_INTRA = 6, |
| 39 INVALID_CASE = 9 |
| 40 } motion_vector_context; |
| 41 |
| 42 // This is used to figure out a context for the ref blocks. The code flattens |
| 43 // an array that would have 3 possible counts (0, 1 & 2) for 3 choices by |
| 44 // adding 9 for each intra block, 3 for each zero mv and 1 for each new |
| 45 // motion vector. This single number is then converted into a context |
| 46 // with a single lookup ( counter_to_context ). |
| 47 static const int mode_2_counter[MB_MODE_COUNT] = { |
| 48 9, // DC_PRED |
| 49 9, // V_PRED |
| 50 9, // H_PRED |
| 51 9, // D45_PRED |
| 52 9, // D135_PRED |
| 53 9, // D117_PRED |
| 54 9, // D153_PRED |
| 55 9, // D207_PRED |
| 56 9, // D63_PRED |
| 57 9, // TM_PRED |
| 58 0, // NEARESTMV |
| 59 0, // NEARMV |
| 60 3, // ZEROMV |
| 61 1, // NEWMV |
| 62 }; |
| 63 |
| 64 // There are 3^3 different combinations of 3 counts that can be either 0,1 or |
| 65 // 2. However the actual count can never be greater than 2 so the highest |
| 66 // counter we need is 18. 9 is an invalid counter that's never used. |
| 67 static const int counter_to_context[19] = { |
| 68 BOTH_PREDICTED, // 0 |
| 69 NEW_PLUS_NON_INTRA, // 1 |
| 70 BOTH_NEW, // 2 |
| 71 ZERO_PLUS_PREDICTED, // 3 |
| 72 NEW_PLUS_NON_INTRA, // 4 |
| 73 INVALID_CASE, // 5 |
| 74 BOTH_ZERO, // 6 |
| 75 INVALID_CASE, // 7 |
| 76 INVALID_CASE, // 8 |
| 77 INTRA_PLUS_NON_INTRA, // 9 |
| 78 INTRA_PLUS_NON_INTRA, // 10 |
| 79 INVALID_CASE, // 11 |
| 80 INTRA_PLUS_NON_INTRA, // 12 |
| 81 INVALID_CASE, // 13 |
| 82 INVALID_CASE, // 14 |
| 83 INVALID_CASE, // 15 |
| 84 INVALID_CASE, // 16 |
| 85 INVALID_CASE, // 17 |
| 86 BOTH_INTRA // 18 |
| 87 }; |
| 88 |
| 89 static const POSITION mv_ref_blocks[BLOCK_SIZES][MVREF_NEIGHBOURS] = { |
| 90 // 4X4 |
| 91 {{-1, 0}, {0, -1}, {-1, -1}, {-2, 0}, {0, -2}, {-2, -1}, {-1, -2}, {-2, -2}}, |
| 92 // 4X8 |
| 93 {{-1, 0}, {0, -1}, {-1, -1}, {-2, 0}, {0, -2}, {-2, -1}, {-1, -2}, {-2, -2}}, |
| 94 // 8X4 |
| 95 {{-1, 0}, {0, -1}, {-1, -1}, {-2, 0}, {0, -2}, {-2, -1}, {-1, -2}, {-2, -2}}, |
| 96 // 8X8 |
| 97 {{-1, 0}, {0, -1}, {-1, -1}, {-2, 0}, {0, -2}, {-2, -1}, {-1, -2}, {-2, -2}}, |
| 98 // 8X16 |
| 99 {{0, -1}, {-1, 0}, {1, -1}, {-1, -1}, {0, -2}, {-2, 0}, {-2, -1}, {-1, -2}}, |
| 100 // 16X8 |
| 101 {{-1, 0}, {0, -1}, {-1, 1}, {-1, -1}, {-2, 0}, {0, -2}, {-1, -2}, {-2, -1}}, |
| 102 // 16X16 |
| 103 {{-1, 0}, {0, -1}, {-1, 1}, {1, -1}, {-1, -1}, {-3, 0}, {0, -3}, {-3, -3}}, |
| 104 // 16X32 |
| 105 {{0, -1}, {-1, 0}, {2, -1}, {-1, -1}, {-1, 1}, {0, -3}, {-3, 0}, {-3, -3}}, |
| 106 // 32X16 |
| 107 {{-1, 0}, {0, -1}, {-1, 2}, {-1, -1}, {1, -1}, {-3, 0}, {0, -3}, {-3, -3}}, |
| 108 // 32X32 |
| 109 {{-1, 1}, {1, -1}, {-1, 2}, {2, -1}, {-1, -1}, {-3, 0}, {0, -3}, {-3, -3}}, |
| 110 // 32X64 |
| 111 {{0, -1}, {-1, 0}, {4, -1}, {-1, 2}, {-1, -1}, {0, -3}, {-3, 0}, {2, -1}}, |
| 112 // 64X32 |
| 113 {{-1, 0}, {0, -1}, {-1, 4}, {2, -1}, {-1, -1}, {-3, 0}, {0, -3}, {-1, 2}}, |
| 114 // 64X64 |
| 115 {{-1, 3}, {3, -1}, {-1, 4}, {4, -1}, {-1, -1}, {-1, 0}, {0, -1}, {-1, 6}} |
| 116 }; |
| 117 |
| 118 static const int idx_n_column_to_subblock[4][2] = { |
| 119 {1, 2}, |
| 120 {1, 3}, |
| 121 {3, 2}, |
| 122 {3, 3} |
| 123 }; |
| 124 |
| 125 // clamp_mv_ref |
| 126 #define MV_BORDER (16 << 3) // Allow 16 pels in 1/8th pel units |
| 127 |
| 128 static void clamp_mv_ref(MV *mv, const MACROBLOCKD *xd) { |
| 129 clamp_mv(mv, xd->mb_to_left_edge - MV_BORDER, |
| 130 xd->mb_to_right_edge + MV_BORDER, |
| 131 xd->mb_to_top_edge - MV_BORDER, |
| 132 xd->mb_to_bottom_edge + MV_BORDER); |
| 133 } |
| 134 |
| 135 // This function returns either the appropriate sub block or block's mv |
| 136 // on whether the block_size < 8x8 and we have check_sub_blocks set. |
| 137 static INLINE int_mv get_sub_block_mv(const MODE_INFO *candidate, int which_mv, |
| 138 int search_col, int block_idx) { |
| 139 return block_idx >= 0 && candidate->mbmi.sb_type < BLOCK_8X8 |
| 140 ? candidate->bmi[idx_n_column_to_subblock[block_idx][search_col == 0]] |
| 141 .as_mv[which_mv] |
| 142 : candidate->mbmi.mv[which_mv]; |
| 143 } |
| 144 |
| 145 |
| 146 // Performs mv sign inversion if indicated by the reference frame combination. |
| 147 static INLINE int_mv scale_mv(const MB_MODE_INFO *mbmi, int ref, |
| 148 const MV_REFERENCE_FRAME this_ref_frame, |
| 149 const int *ref_sign_bias) { |
| 150 int_mv mv = mbmi->mv[ref]; |
| 151 if (ref_sign_bias[mbmi->ref_frame[ref]] != ref_sign_bias[this_ref_frame]) { |
| 152 mv.as_mv.row *= -1; |
| 153 mv.as_mv.col *= -1; |
| 154 } |
| 155 return mv; |
| 156 } |
| 157 |
| 158 // This macro is used to add a motion vector mv_ref list if it isn't |
| 159 // already in the list. If it's the second motion vector it will also |
| 160 // skip all additional processing and jump to done! |
| 161 #define ADD_MV_REF_LIST(mv) \ |
| 162 do { \ |
| 163 if (refmv_count) { \ |
| 164 if ((mv).as_int != mv_ref_list[0].as_int) { \ |
| 165 mv_ref_list[refmv_count] = (mv); \ |
| 166 goto Done; \ |
| 167 } \ |
| 168 } else { \ |
| 169 mv_ref_list[refmv_count++] = (mv); \ |
| 170 } \ |
| 171 } while (0) |
| 172 |
| 173 // If either reference frame is different, not INTRA, and they |
| 174 // are different from each other scale and add the mv to our list. |
| 175 #define IF_DIFF_REF_FRAME_ADD_MV(mbmi) \ |
| 176 do { \ |
| 177 if (is_inter_block(mbmi)) { \ |
| 178 if ((mbmi)->ref_frame[0] != ref_frame) \ |
| 179 ADD_MV_REF_LIST(scale_mv((mbmi), 0, ref_frame, ref_sign_bias)); \ |
| 180 if (has_second_ref(mbmi) && \ |
| 181 (mbmi)->ref_frame[1] != ref_frame && \ |
| 182 (mbmi)->mv[1].as_int != (mbmi)->mv[0].as_int) \ |
| 183 ADD_MV_REF_LIST(scale_mv((mbmi), 1, ref_frame, ref_sign_bias)); \ |
| 184 } \ |
| 185 } while (0) |
| 186 |
| 187 |
| 188 // Checks that the given mi_row, mi_col and search point |
| 189 // are inside the borders of the tile. |
| 190 static INLINE int is_inside(const TileInfo *const tile, |
| 191 int mi_col, int mi_row, int mi_rows, |
| 192 const POSITION *mi_pos) { |
| 193 return !(mi_row + mi_pos->row < 0 || |
| 194 mi_col + mi_pos->col < tile->mi_col_start || |
| 195 mi_row + mi_pos->row >= mi_rows || |
| 196 mi_col + mi_pos->col >= tile->mi_col_end); |
| 197 } |
| 198 |
24 // TODO(jingning): this mv clamping function should be block size dependent. | 199 // TODO(jingning): this mv clamping function should be block size dependent. |
25 static INLINE void clamp_mv2(MV *mv, const MACROBLOCKD *xd) { | 200 static INLINE void clamp_mv2(MV *mv, const MACROBLOCKD *xd) { |
26 clamp_mv(mv, xd->mb_to_left_edge - LEFT_TOP_MARGIN, | 201 clamp_mv(mv, xd->mb_to_left_edge - LEFT_TOP_MARGIN, |
27 xd->mb_to_right_edge + RIGHT_BOTTOM_MARGIN, | 202 xd->mb_to_right_edge + RIGHT_BOTTOM_MARGIN, |
28 xd->mb_to_top_edge - LEFT_TOP_MARGIN, | 203 xd->mb_to_top_edge - LEFT_TOP_MARGIN, |
29 xd->mb_to_bottom_edge + RIGHT_BOTTOM_MARGIN); | 204 xd->mb_to_bottom_edge + RIGHT_BOTTOM_MARGIN); |
30 } | 205 } |
31 | 206 |
32 void vp9_find_mv_refs(const VP9_COMMON *cm, const MACROBLOCKD *xd, | 207 void vp9_find_mv_refs(const VP9_COMMON *cm, const MACROBLOCKD *xd, |
33 const TileInfo *const tile, | 208 const TileInfo *const tile, |
34 MODE_INFO *mi, MV_REFERENCE_FRAME ref_frame, | 209 MODE_INFO *mi, MV_REFERENCE_FRAME ref_frame, |
35 int_mv *mv_ref_list, int mi_row, int mi_col); | 210 int_mv *mv_ref_list, int mi_row, int mi_col); |
36 | 211 |
37 // check a list of motion vectors by sad score using a number rows of pixels | 212 // check a list of motion vectors by sad score using a number rows of pixels |
38 // above and a number cols of pixels in the left to select the one with best | 213 // above and a number cols of pixels in the left to select the one with best |
39 // score to use as ref motion vector | 214 // score to use as ref motion vector |
40 void vp9_find_best_ref_mvs(MACROBLOCKD *xd, int allow_hp, | 215 void vp9_find_best_ref_mvs(MACROBLOCKD *xd, int allow_hp, |
41 int_mv *mvlist, int_mv *nearest, int_mv *near); | 216 int_mv *mvlist, int_mv *nearest, int_mv *near); |
42 | 217 |
43 void vp9_append_sub8x8_mvs_for_idx(VP9_COMMON *cm, MACROBLOCKD *xd, | 218 void vp9_append_sub8x8_mvs_for_idx(VP9_COMMON *cm, MACROBLOCKD *xd, |
44 const TileInfo *const tile, | 219 const TileInfo *const tile, |
45 int block, int ref, int mi_row, int mi_col, | 220 int block, int ref, int mi_row, int mi_col, |
46 int_mv *nearest, int_mv *near); | 221 int_mv *nearest, int_mv *near); |
47 | 222 |
48 #ifdef __cplusplus | 223 #ifdef __cplusplus |
49 } // extern "C" | 224 } // extern "C" |
50 #endif | 225 #endif |
51 | 226 |
52 #endif // VP9_COMMON_VP9_MVREF_COMMON_H_ | 227 #endif // VP9_COMMON_VP9_MVREF_COMMON_H_ |
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