#ifndef VP9_COMMON_VP9_MVREF_COMMON_H_ #define VP9_COMMON_VP9_MVREF_COMMON_H_ /* * Copyright (c) 2012 The WebM project authors. All Rights Reserved. * * Use of this source code is governed by a BSD-style license * that can be found in the LICENSE file in the root of the source * tree. An additional intellectual property rights grant can be found * in the file PATENTS. All contributing project authors may * be found in the AUTHORS file in the root of the source tree. */ #include "vp9/common/vp9_onyxc_int.h" #include "vp9/common/vp9_blockd.h" #ifdef __cplusplus extern "C" { #endif #define LEFT_TOP_MARGIN ((VP9_ENC_BORDER_IN_PIXELS - VP9_INTERP_EXTEND) << 3) #define RIGHT_BOTTOM_MARGIN ((VP9_ENC_BORDER_IN_PIXELS -\ VP9_INTERP_EXTEND) << 3) #define MVREF_NEIGHBOURS 8 typedef struct position { int row; int col; } POSITION; typedef enum { BOTH_ZERO = 0, ZERO_PLUS_PREDICTED = 1, BOTH_PREDICTED = 2, NEW_PLUS_NON_INTRA = 3, BOTH_NEW = 4, INTRA_PLUS_NON_INTRA = 5, BOTH_INTRA = 6, INVALID_CASE = 9 } motion_vector_context; // This is used to figure out a context for the ref blocks. The code flattens // an array that would have 3 possible counts (0, 1 & 2) for 3 choices by // adding 9 for each intra block, 3 for each zero mv and 1 for each new // motion vector. This single number is then converted into a context // with a single lookup ( counter_to_context ). static const int mode_2_counter[MB_MODE_COUNT] = { 9, // DC_PRED 9, // V_PRED 9, // H_PRED 9, // D45_PRED 9, // D135_PRED 9, // D117_PRED 9, // D153_PRED 9, // D207_PRED 9, // D63_PRED 9, // TM_PRED 0, // NEARESTMV 0, // NEARMV 3, // ZEROMV 1, // NEWMV }; // There are 3^3 different combinations of 3 counts that can be either 0,1 or // 2. However the actual count can never be greater than 2 so the highest // counter we need is 18. 9 is an invalid counter that's never used. static const int counter_to_context[19] = { BOTH_PREDICTED, // 0 NEW_PLUS_NON_INTRA, // 1 BOTH_NEW, // 2 ZERO_PLUS_PREDICTED, // 3 NEW_PLUS_NON_INTRA, // 4 INVALID_CASE, // 5 BOTH_ZERO, // 6 INVALID_CASE, // 7 INVALID_CASE, // 8 INTRA_PLUS_NON_INTRA, // 9 INTRA_PLUS_NON_INTRA, // 10 INVALID_CASE, // 11 INTRA_PLUS_NON_INTRA, // 12 INVALID_CASE, // 13 INVALID_CASE, // 14 INVALID_CASE, // 15 INVALID_CASE, // 16 INVALID_CASE, // 17 BOTH_INTRA // 18 }; static const POSITION mv_ref_blocks[BLOCK_SIZES][MVREF_NEIGHBOURS] = { // 4X4 {{-1, 0}, {0, -1}, {-1, -1}, {-2, 0}, {0, -2}, {-2, -1}, {-1, -2}, {-2, -2}}, // 4X8 {{-1, 0}, {0, -1}, {-1, -1}, {-2, 0}, {0, -2}, {-2, -1}, {-1, -2}, {-2, -2}}, // 8X4 {{-1, 0}, {0, -1}, {-1, -1}, {-2, 0}, {0, -2}, {-2, -1}, {-1, -2}, {-2, -2}}, // 8X8 {{-1, 0}, {0, -1}, {-1, -1}, {-2, 0}, {0, -2}, {-2, -1}, {-1, -2}, {-2, -2}}, // 8X16 {{0, -1}, {-1, 0}, {1, -1}, {-1, -1}, {0, -2}, {-2, 0}, {-2, -1}, {-1, -2}}, // 16X8 {{-1, 0}, {0, -1}, {-1, 1}, {-1, -1}, {-2, 0}, {0, -2}, {-1, -2}, {-2, -1}}, // 16X16 {{-1, 0}, {0, -1}, {-1, 1}, {1, -1}, {-1, -1}, {-3, 0}, {0, -3}, {-3, -3}}, // 16X32 {{0, -1}, {-1, 0}, {2, -1}, {-1, -1}, {-1, 1}, {0, -3}, {-3, 0}, {-3, -3}}, // 32X16 {{-1, 0}, {0, -1}, {-1, 2}, {-1, -1}, {1, -1}, {-3, 0}, {0, -3}, {-3, -3}}, // 32X32 {{-1, 1}, {1, -1}, {-1, 2}, {2, -1}, {-1, -1}, {-3, 0}, {0, -3}, {-3, -3}}, // 32X64 {{0, -1}, {-1, 0}, {4, -1}, {-1, 2}, {-1, -1}, {0, -3}, {-3, 0}, {2, -1}}, // 64X32 {{-1, 0}, {0, -1}, {-1, 4}, {2, -1}, {-1, -1}, {-3, 0}, {0, -3}, {-1, 2}}, // 64X64 {{-1, 3}, {3, -1}, {-1, 4}, {4, -1}, {-1, -1}, {-1, 0}, {0, -1}, {-1, 6}} }; static const int idx_n_column_to_subblock[4][2] = { {1, 2}, {1, 3}, {3, 2}, {3, 3} }; // clamp_mv_ref #define MV_BORDER (16 << 3) // Allow 16 pels in 1/8th pel units static INLINE void clamp_mv_ref(MV *mv, const MACROBLOCKD *xd) { clamp_mv(mv, xd->mb_to_left_edge - MV_BORDER, xd->mb_to_right_edge + MV_BORDER, xd->mb_to_top_edge - MV_BORDER, xd->mb_to_bottom_edge + MV_BORDER); } // This function returns either the appropriate sub block or block's mv // on whether the block_size < 8x8 and we have check_sub_blocks set. static INLINE int_mv get_sub_block_mv(const MODE_INFO *candidate, int which_mv, int search_col, int block_idx) { return block_idx >= 0 && candidate->sb_type < BLOCK_8X8 ? candidate->bmi[idx_n_column_to_subblock[block_idx][search_col == 0]] .as_mv[which_mv] : candidate->mv[which_mv]; } // Performs mv sign inversion if indicated by the reference frame combination. static INLINE int_mv scale_mv(const MODE_INFO *mi, int ref, const MV_REFERENCE_FRAME this_ref_frame, const int *ref_sign_bias) { int_mv mv = mi->mv[ref]; if (ref_sign_bias[mi->ref_frame[ref]] != ref_sign_bias[this_ref_frame]) { mv.as_mv.row *= -1; mv.as_mv.col *= -1; } return mv; } // This macro is used to add a motion vector mv_ref list if it isn't // already in the list. If it's the second motion vector it will also // skip all additional processing and jump to Done! #define ADD_MV_REF_LIST(mv, refmv_count, mv_ref_list, Done) \ do { \ if (refmv_count) { \ if ((mv).as_int != (mv_ref_list)[0].as_int) { \ (mv_ref_list)[(refmv_count)] = (mv); \ goto Done; \ } \ } else { \ (mv_ref_list)[(refmv_count)++] = (mv); \ } \ } while (0) // If either reference frame is different, not INTRA, and they // are different from each other scale and add the mv to our list. #define IF_DIFF_REF_FRAME_ADD_MV(mbmi, ref_frame, ref_sign_bias, refmv_count, \ mv_ref_list, Done) \ do { \ if (is_inter_block(mbmi)) { \ if ((mbmi)->ref_frame[0] != ref_frame) \ ADD_MV_REF_LIST(scale_mv((mbmi), 0, ref_frame, ref_sign_bias), \ refmv_count, mv_ref_list, Done); \ if (has_second_ref(mbmi) && \ (mbmi)->ref_frame[1] != ref_frame && \ (mbmi)->mv[1].as_int != (mbmi)->mv[0].as_int) \ ADD_MV_REF_LIST(scale_mv((mbmi), 1, ref_frame, ref_sign_bias), \ refmv_count, mv_ref_list, Done); \ } \ } while (0) // Checks that the given mi_row, mi_col and search point // are inside the borders of the tile. static INLINE int is_inside(const TileInfo *const tile, int mi_col, int mi_row, int mi_rows, const POSITION *mi_pos) { return !(mi_row + mi_pos->row < 0 || mi_col + mi_pos->col < tile->mi_col_start || mi_row + mi_pos->row >= mi_rows || mi_col + mi_pos->col >= tile->mi_col_end); } // TODO(jingning): this mv clamping function should be block size dependent. static INLINE void clamp_mv2(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); } static INLINE void lower_mv_precision(MV *mv, int allow_hp) { const int use_hp = allow_hp && use_mv_hp(mv); if (!use_hp) { if (mv->row & 1) mv->row += (mv->row > 0 ? -1 : 1); if (mv->col & 1) mv->col += (mv->col > 0 ? -1 : 1); } } typedef void (*find_mv_refs_sync)(void *const data, int mi_row); void vp9_find_mv_refs(const VP9_COMMON *cm, const MACROBLOCKD *xd, MODE_INFO *mi, MV_REFERENCE_FRAME ref_frame, int_mv *mv_ref_list, int mi_row, int mi_col, uint8_t *mode_context); // 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 void vp9_find_best_ref_mvs(MACROBLOCKD *xd, int allow_hp, int_mv *mvlist, int_mv *nearest_mv, int_mv *near_mv); void vp9_append_sub8x8_mvs_for_idx(VP9_COMMON *cm, MACROBLOCKD *xd, int block, int ref, int mi_row, int mi_col, int_mv *nearest_mv, int_mv *near_mv, uint8_t *mode_context); #ifdef __cplusplus } // extern "C" #endif #endif // VP9_COMMON_VP9_MVREF_COMMON_H_