/* * Copyright (c) 2016, Alliance for Open Media. All rights reserved. * * This source code is subject to the terms of the BSD 2 Clause License and * the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License * was not distributed with this source code in the LICENSE file, you can * obtain it at www.aomedia.org/license/software. If the Alliance for Open * Media Patent License 1.0 was not distributed with this source code in the * PATENTS file, you can obtain it at www.aomedia.org/license/patent. */ #include <stdlib.h> #include "av1/common/mvref_common.h" #include "av1/common/warped_motion.h" // Although we assign 32 bit integers, all the values are strictly under 14 // bits. static int div_mult[32] = …; // TODO(jingning): Consider the use of lookup table for (num / den) // altogether. static inline void get_mv_projection(MV *output, MV ref, int num, int den) { … } void av1_copy_frame_mvs(const AV1_COMMON *const cm, const MB_MODE_INFO *const mi, int mi_row, int mi_col, int x_mis, int y_mis) { … } static inline void add_ref_mv_candidate( const MB_MODE_INFO *const candidate, const MV_REFERENCE_FRAME rf[2], uint8_t *refmv_count, uint8_t *ref_match_count, uint8_t *newmv_count, CANDIDATE_MV *ref_mv_stack, uint16_t *ref_mv_weight, int_mv *gm_mv_candidates, const WarpedMotionParams *gm_params, uint16_t weight) { … } static inline void scan_row_mbmi(const AV1_COMMON *cm, const MACROBLOCKD *xd, int mi_col, const MV_REFERENCE_FRAME rf[2], int row_offset, CANDIDATE_MV *ref_mv_stack, uint16_t *ref_mv_weight, uint8_t *refmv_count, uint8_t *ref_match_count, uint8_t *newmv_count, int_mv *gm_mv_candidates, int max_row_offset, int *processed_rows) { … } static inline void scan_col_mbmi(const AV1_COMMON *cm, const MACROBLOCKD *xd, int mi_row, const MV_REFERENCE_FRAME rf[2], int col_offset, CANDIDATE_MV *ref_mv_stack, uint16_t *ref_mv_weight, uint8_t *refmv_count, uint8_t *ref_match_count, uint8_t *newmv_count, int_mv *gm_mv_candidates, int max_col_offset, int *processed_cols) { … } static inline void scan_blk_mbmi(const AV1_COMMON *cm, const MACROBLOCKD *xd, const int mi_row, const int mi_col, const MV_REFERENCE_FRAME rf[2], int row_offset, int col_offset, CANDIDATE_MV *ref_mv_stack, uint16_t *ref_mv_weight, uint8_t *ref_match_count, uint8_t *newmv_count, int_mv *gm_mv_candidates, uint8_t *refmv_count) { … } static int has_top_right(const AV1_COMMON *cm, const MACROBLOCKD *xd, int mi_row, int mi_col, int bs) { … } static int check_sb_border(const int mi_row, const int mi_col, const int row_offset, const int col_offset) { … } static int add_tpl_ref_mv(const AV1_COMMON *cm, const MACROBLOCKD *xd, int mi_row, int mi_col, MV_REFERENCE_FRAME ref_frame, int blk_row, int blk_col, int_mv *gm_mv_candidates, uint8_t *const refmv_count, CANDIDATE_MV ref_mv_stack[MAX_REF_MV_STACK_SIZE], uint16_t ref_mv_weight[MAX_REF_MV_STACK_SIZE], int16_t *mode_context) { … } static inline void process_compound_ref_mv_candidate( const MB_MODE_INFO *const candidate, const AV1_COMMON *const cm, const MV_REFERENCE_FRAME *const rf, int_mv ref_id[2][2], int ref_id_count[2], int_mv ref_diff[2][2], int ref_diff_count[2]) { … } static inline void process_single_ref_mv_candidate( const MB_MODE_INFO *const candidate, const AV1_COMMON *const cm, MV_REFERENCE_FRAME ref_frame, uint8_t *const refmv_count, CANDIDATE_MV ref_mv_stack[MAX_REF_MV_STACK_SIZE], uint16_t ref_mv_weight[MAX_REF_MV_STACK_SIZE]) { … } static inline void setup_ref_mv_list( const AV1_COMMON *cm, const MACROBLOCKD *xd, MV_REFERENCE_FRAME ref_frame, uint8_t *const refmv_count, CANDIDATE_MV ref_mv_stack[MAX_REF_MV_STACK_SIZE], uint16_t ref_mv_weight[MAX_REF_MV_STACK_SIZE], int_mv mv_ref_list[MAX_MV_REF_CANDIDATES], int_mv *gm_mv_candidates, int mi_row, int mi_col, int16_t *mode_context) { … } void av1_find_mv_refs(const AV1_COMMON *cm, const MACROBLOCKD *xd, MB_MODE_INFO *mi, MV_REFERENCE_FRAME ref_frame, uint8_t ref_mv_count[MODE_CTX_REF_FRAMES], CANDIDATE_MV ref_mv_stack[][MAX_REF_MV_STACK_SIZE], uint16_t ref_mv_weight[][MAX_REF_MV_STACK_SIZE], int_mv mv_ref_list[][MAX_MV_REF_CANDIDATES], int_mv *global_mvs, int16_t *mode_context) { … } void av1_find_best_ref_mvs(int allow_hp, int_mv *mvlist, int_mv *nearest_mv, int_mv *near_mv, int is_integer) { … } void av1_setup_frame_buf_refs(AV1_COMMON *cm) { … } void av1_setup_frame_sign_bias(AV1_COMMON *cm) { … } #define MAX_OFFSET_WIDTH … #define MAX_OFFSET_HEIGHT … static int get_block_position(AV1_COMMON *cm, int *mi_r, int *mi_c, int blk_row, int blk_col, MV mv, int sign_bias) { … } // Note: motion_filed_projection finds motion vectors of current frame's // reference frame, and projects them to current frame. To make it clear, // let's call current frame's reference frame as start frame. // Call Start frame's reference frames as reference frames. // Call ref_offset as frame distances between start frame and its reference // frames. static int motion_field_projection(AV1_COMMON *cm, MV_REFERENCE_FRAME start_frame, int dir) { … } // cm->ref_frame_side is calculated here, and will be used in // av1_copy_frame_mvs() to affect how mvs are copied. void av1_calculate_ref_frame_side(AV1_COMMON *cm) { … } void av1_setup_motion_field(AV1_COMMON *cm) { … } static inline void record_samples(const MB_MODE_INFO *mbmi, int *pts, int *pts_inref, int row_offset, int sign_r, int col_offset, int sign_c) { … } // Select samples according to the motion vector difference. uint8_t av1_selectSamples(MV *mv, int *pts, int *pts_inref, int len, BLOCK_SIZE bsize) { … } // Note: Samples returned are at 1/8-pel precision // Sample are the neighbor block center point's coordinates relative to the // left-top pixel of current block. uint8_t av1_findSamples(const AV1_COMMON *cm, MACROBLOCKD *xd, int *pts, int *pts_inref) { … } void av1_setup_skip_mode_allowed(AV1_COMMON *cm) { … } REF_FRAME_INFO; // Compares the sort_idx fields. If they are equal, then compares the map_idx // fields to break the tie. This ensures a stable sort. static int compare_ref_frame_info(const void *arg_a, const void *arg_b) { … } static inline void set_ref_frame_info(int *remapped_ref_idx, int frame_idx, REF_FRAME_INFO *ref_info) { … } void av1_set_frame_refs(AV1_COMMON *const cm, int *remapped_ref_idx, int lst_map_idx, int gld_map_idx) { … }
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