1 /* 2 * Copyright (c) 2010 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 12 #ifndef VP9_COMMON_VP9_BLOCKD_H_ 13 #define VP9_COMMON_VP9_BLOCKD_H_ 14 15 #include "./vpx_config.h" 16 17 #include "vpx_ports/mem.h" 18 #include "vpx_scale/yv12config.h" 19 20 #include "vp9/common/vp9_common.h" 21 #include "vp9/common/vp9_common_data.h" 22 #include "vp9/common/vp9_enums.h" 23 #include "vp9/common/vp9_filter.h" 24 #include "vp9/common/vp9_mv.h" 25 #include "vp9/common/vp9_scale.h" 26 #include "vp9/common/vp9_seg_common.h" 27 28 #ifdef __cplusplus 29 extern "C" { 30 #endif 31 32 #define BLOCK_SIZE_GROUPS 4 33 #define SKIP_CONTEXTS 3 34 #define INTER_MODE_CONTEXTS 7 35 36 /* Segment Feature Masks */ 37 #define MAX_MV_REF_CANDIDATES 2 38 39 #define INTRA_INTER_CONTEXTS 4 40 #define COMP_INTER_CONTEXTS 5 41 #define REF_CONTEXTS 5 42 43 typedef enum { 44 PLANE_TYPE_Y = 0, 45 PLANE_TYPE_UV = 1, 46 PLANE_TYPES 47 } PLANE_TYPE; 48 49 typedef char ENTROPY_CONTEXT; 50 51 typedef char PARTITION_CONTEXT; 52 53 static INLINE int combine_entropy_contexts(ENTROPY_CONTEXT a, 54 ENTROPY_CONTEXT b) { 55 return (a != 0) + (b != 0); 56 } 57 58 typedef enum { 59 KEY_FRAME = 0, 60 INTER_FRAME = 1, 61 FRAME_TYPES, 62 } FRAME_TYPE; 63 64 typedef enum { 65 DC_PRED, // Average of above and left pixels 66 V_PRED, // Vertical 67 H_PRED, // Horizontal 68 D45_PRED, // Directional 45 deg = round(arctan(1/1) * 180/pi) 69 D135_PRED, // Directional 135 deg = 180 - 45 70 D117_PRED, // Directional 117 deg = 180 - 63 71 D153_PRED, // Directional 153 deg = 180 - 27 72 D207_PRED, // Directional 207 deg = 180 + 27 73 D63_PRED, // Directional 63 deg = round(arctan(2/1) * 180/pi) 74 TM_PRED, // True-motion 75 NEARESTMV, 76 NEARMV, 77 ZEROMV, 78 NEWMV, 79 MB_MODE_COUNT 80 } MB_PREDICTION_MODE; 81 82 static INLINE int is_inter_mode(MB_PREDICTION_MODE mode) { 83 return mode >= NEARESTMV && mode <= NEWMV; 84 } 85 86 #define INTRA_MODES (TM_PRED + 1) 87 88 #define INTER_MODES (1 + NEWMV - NEARESTMV) 89 90 #define INTER_OFFSET(mode) ((mode) - NEARESTMV) 91 92 /* For keyframes, intra block modes are predicted by the (already decoded) 93 modes for the Y blocks to the left and above us; for interframes, there 94 is a single probability table. */ 95 96 typedef struct { 97 MB_PREDICTION_MODE as_mode; 98 int_mv as_mv[2]; // first, second inter predictor motion vectors 99 } b_mode_info; 100 101 typedef enum { 102 NONE = -1, 103 INTRA_FRAME = 0, 104 LAST_FRAME = 1, 105 GOLDEN_FRAME = 2, 106 ALTREF_FRAME = 3, 107 MAX_REF_FRAMES = 4 108 } MV_REFERENCE_FRAME; 109 110 static INLINE int b_width_log2(BLOCK_SIZE sb_type) { 111 return b_width_log2_lookup[sb_type]; 112 } 113 static INLINE int b_height_log2(BLOCK_SIZE sb_type) { 114 return b_height_log2_lookup[sb_type]; 115 } 116 117 static INLINE int mi_width_log2(BLOCK_SIZE sb_type) { 118 return mi_width_log2_lookup[sb_type]; 119 } 120 121 // This structure now relates to 8x8 block regions. 122 typedef struct { 123 // Common for both INTER and INTRA blocks 124 BLOCK_SIZE sb_type; 125 MB_PREDICTION_MODE mode; 126 TX_SIZE tx_size; 127 uint8_t skip; 128 uint8_t segment_id; 129 uint8_t seg_id_predicted; // valid only when temporal_update is enabled 130 131 // Only for INTRA blocks 132 MB_PREDICTION_MODE uv_mode; 133 134 // Only for INTER blocks 135 MV_REFERENCE_FRAME ref_frame[2]; 136 int_mv mv[2]; 137 int_mv ref_mvs[MAX_REF_FRAMES][MAX_MV_REF_CANDIDATES]; 138 uint8_t mode_context[MAX_REF_FRAMES]; 139 INTERP_FILTER interp_filter; 140 } MB_MODE_INFO; 141 142 typedef struct { 143 MB_MODE_INFO mbmi; 144 b_mode_info bmi[4]; 145 } MODE_INFO; 146 147 static INLINE MB_PREDICTION_MODE get_y_mode(const MODE_INFO *mi, int block) { 148 return mi->mbmi.sb_type < BLOCK_8X8 ? mi->bmi[block].as_mode 149 : mi->mbmi.mode; 150 } 151 152 static INLINE int is_inter_block(const MB_MODE_INFO *mbmi) { 153 return mbmi->ref_frame[0] > INTRA_FRAME; 154 } 155 156 static INLINE int has_second_ref(const MB_MODE_INFO *mbmi) { 157 return mbmi->ref_frame[1] > INTRA_FRAME; 158 } 159 160 MB_PREDICTION_MODE vp9_left_block_mode(const MODE_INFO *cur_mi, 161 const MODE_INFO *left_mi, int b); 162 163 MB_PREDICTION_MODE vp9_above_block_mode(const MODE_INFO *cur_mi, 164 const MODE_INFO *above_mi, int b); 165 166 enum mv_precision { 167 MV_PRECISION_Q3, 168 MV_PRECISION_Q4 169 }; 170 171 #if CONFIG_ALPHA 172 enum { MAX_MB_PLANE = 4 }; 173 #else 174 enum { MAX_MB_PLANE = 3 }; 175 #endif 176 177 struct buf_2d { 178 uint8_t *buf; 179 int stride; 180 }; 181 182 struct macroblockd_plane { 183 int16_t *dqcoeff; 184 PLANE_TYPE plane_type; 185 int subsampling_x; 186 int subsampling_y; 187 struct buf_2d dst; 188 struct buf_2d pre[2]; 189 const int16_t *dequant; 190 ENTROPY_CONTEXT *above_context; 191 ENTROPY_CONTEXT *left_context; 192 }; 193 194 #define BLOCK_OFFSET(x, i) ((x) + (i) * 16) 195 196 typedef struct RefBuffer { 197 // TODO(dkovalev): idx is not really required and should be removed, now it 198 // is used in vp9_onyxd_if.c 199 int idx; 200 YV12_BUFFER_CONFIG *buf; 201 struct scale_factors sf; 202 } RefBuffer; 203 204 typedef struct macroblockd { 205 struct macroblockd_plane plane[MAX_MB_PLANE]; 206 207 int mi_stride; 208 209 // A NULL indicates that the 8x8 is not part of the image 210 MODE_INFO **mi; 211 212 int up_available; 213 int left_available; 214 215 /* Distance of MB away from frame edges */ 216 int mb_to_left_edge; 217 int mb_to_right_edge; 218 int mb_to_top_edge; 219 int mb_to_bottom_edge; 220 221 /* pointers to reference frames */ 222 RefBuffer *block_refs[2]; 223 224 /* pointer to current frame */ 225 const YV12_BUFFER_CONFIG *cur_buf; 226 227 /* mc buffer */ 228 DECLARE_ALIGNED(16, uint8_t, mc_buf[80 * 2 * 80 * 2]); 229 230 int lossless; 231 /* Inverse transform function pointers. */ 232 void (*itxm_add)(const int16_t *input, uint8_t *dest, int stride, int eob); 233 234 int corrupted; 235 236 DECLARE_ALIGNED(16, int16_t, dqcoeff[MAX_MB_PLANE][64 * 64]); 237 238 ENTROPY_CONTEXT *above_context[MAX_MB_PLANE]; 239 ENTROPY_CONTEXT left_context[MAX_MB_PLANE][16]; 240 241 PARTITION_CONTEXT *above_seg_context; 242 PARTITION_CONTEXT left_seg_context[8]; 243 } MACROBLOCKD; 244 245 static INLINE BLOCK_SIZE get_subsize(BLOCK_SIZE bsize, 246 PARTITION_TYPE partition) { 247 const BLOCK_SIZE subsize = subsize_lookup[partition][bsize]; 248 assert(subsize < BLOCK_SIZES); 249 return subsize; 250 } 251 252 extern const TX_TYPE intra_mode_to_tx_type_lookup[INTRA_MODES]; 253 254 static INLINE TX_TYPE get_tx_type(PLANE_TYPE plane_type, 255 const MACROBLOCKD *xd) { 256 const MB_MODE_INFO *const mbmi = &xd->mi[0]->mbmi; 257 258 if (plane_type != PLANE_TYPE_Y || is_inter_block(mbmi)) 259 return DCT_DCT; 260 return intra_mode_to_tx_type_lookup[mbmi->mode]; 261 } 262 263 static INLINE TX_TYPE get_tx_type_4x4(PLANE_TYPE plane_type, 264 const MACROBLOCKD *xd, int ib) { 265 const MODE_INFO *const mi = xd->mi[0]; 266 267 if (plane_type != PLANE_TYPE_Y || xd->lossless || is_inter_block(&mi->mbmi)) 268 return DCT_DCT; 269 270 return intra_mode_to_tx_type_lookup[get_y_mode(mi, ib)]; 271 } 272 273 void vp9_setup_block_planes(MACROBLOCKD *xd, int ss_x, int ss_y); 274 275 static INLINE TX_SIZE get_uv_tx_size_impl(TX_SIZE y_tx_size, BLOCK_SIZE bsize) { 276 if (bsize < BLOCK_8X8) { 277 return TX_4X4; 278 } else { 279 // TODO(dkovalev): Assuming YUV420 (ss_x == 1, ss_y == 1) 280 const BLOCK_SIZE plane_bsize = ss_size_lookup[bsize][1][1]; 281 return MIN(y_tx_size, max_txsize_lookup[plane_bsize]); 282 } 283 } 284 285 static INLINE TX_SIZE get_uv_tx_size(const MB_MODE_INFO *mbmi) { 286 return get_uv_tx_size_impl(mbmi->tx_size, mbmi->sb_type); 287 } 288 289 static INLINE BLOCK_SIZE get_plane_block_size(BLOCK_SIZE bsize, 290 const struct macroblockd_plane *pd) { 291 BLOCK_SIZE bs = ss_size_lookup[bsize][pd->subsampling_x][pd->subsampling_y]; 292 assert(bs < BLOCK_SIZES); 293 return bs; 294 } 295 296 typedef void (*foreach_transformed_block_visitor)(int plane, int block, 297 BLOCK_SIZE plane_bsize, 298 TX_SIZE tx_size, 299 void *arg); 300 301 void vp9_foreach_transformed_block_in_plane( 302 const MACROBLOCKD *const xd, BLOCK_SIZE bsize, int plane, 303 foreach_transformed_block_visitor visit, void *arg); 304 305 306 void vp9_foreach_transformed_block( 307 const MACROBLOCKD* const xd, BLOCK_SIZE bsize, 308 foreach_transformed_block_visitor visit, void *arg); 309 310 static INLINE void txfrm_block_to_raster_xy(BLOCK_SIZE plane_bsize, 311 TX_SIZE tx_size, int block, 312 int *x, int *y) { 313 const int bwl = b_width_log2(plane_bsize); 314 const int tx_cols_log2 = bwl - tx_size; 315 const int tx_cols = 1 << tx_cols_log2; 316 const int raster_mb = block >> (tx_size << 1); 317 *x = (raster_mb & (tx_cols - 1)) << tx_size; 318 *y = (raster_mb >> tx_cols_log2) << tx_size; 319 } 320 321 void vp9_set_contexts(const MACROBLOCKD *xd, struct macroblockd_plane *pd, 322 BLOCK_SIZE plane_bsize, TX_SIZE tx_size, int has_eob, 323 int aoff, int loff); 324 325 #ifdef __cplusplus 326 } // extern "C" 327 #endif 328 329 #endif // VP9_COMMON_VP9_BLOCKD_H_ 330
