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Diffstat (limited to 'media/libvpx/libvpx/vp9/common/vp9_mvref_common.h')
| -rw-r--r-- | media/libvpx/libvpx/vp9/common/vp9_mvref_common.h | 323 |
1 files changed, 323 insertions, 0 deletions
diff --git a/media/libvpx/libvpx/vp9/common/vp9_mvref_common.h b/media/libvpx/libvpx/vp9/common/vp9_mvref_common.h new file mode 100644 index 0000000000..5db6772dca --- /dev/null +++ b/media/libvpx/libvpx/vp9/common/vp9_mvref_common.h @@ -0,0 +1,323 @@ +/* + * 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. + */ +#ifndef VPX_VP9_COMMON_VP9_MVREF_COMMON_H_ +#define VPX_VP9_COMMON_VP9_MVREF_COMMON_H_ + +#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 // VPX_VP9_COMMON_VP9_MVREF_COMMON_H_ |