| /* |
| * 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. |
| */ |
| |
| #ifndef AOM_AV1_ENCODER_ENCODEMV_H_ |
| #define AOM_AV1_ENCODER_ENCODEMV_H_ |
| |
| #include "av1/encoder/encoder.h" |
| |
| #ifdef __cplusplus |
| extern "C" { |
| #endif |
| |
| void av1_encode_mv(AV1_COMP *cpi, aom_writer *w, ThreadData *td, const MV *mv, |
| const MV *ref, nmv_context *mvctx, int usehp); |
| |
| void av1_update_mv_stats(const MV *mv, const MV *ref, nmv_context *mvctx, |
| MvSubpelPrecision precision); |
| |
| void av1_build_nmv_cost_table(int *mvjoint, int *mvcost[2], |
| const nmv_context *mvctx, |
| MvSubpelPrecision precision); |
| void av1_build_nmv_component_cost_table(int *mvcost, |
| const nmv_component *const mvcomp, |
| MvSubpelPrecision precision); |
| |
| void av1_update_mv_count(ThreadData *td); |
| |
| void av1_encode_dv(aom_writer *w, const MV *mv, const MV *ref, |
| nmv_context *mvctx); |
| int_mv av1_get_ref_mv(const MACROBLOCK *x, int ref_idx); |
| int_mv av1_get_ref_mv_from_stack(int ref_idx, |
| const MV_REFERENCE_FRAME *ref_frame, |
| int ref_mv_idx, |
| const MB_MODE_INFO_EXT *mbmi_ext); |
| void av1_find_best_ref_mvs_from_stack(int allow_hp, |
| const MB_MODE_INFO_EXT *mbmi_ext, |
| MV_REFERENCE_FRAME ref_frame, |
| int_mv *nearest_mv, int_mv *near_mv, |
| int is_integer); |
| |
| static INLINE MV_JOINT_TYPE av1_get_mv_joint(const MV *mv) { |
| // row: Z col: Z | MV_JOINT_ZERO (0) |
| // row: Z col: NZ | MV_JOINT_HNZVZ (1) |
| // row: NZ col: Z | MV_JOINT_HZVNZ (2) |
| // row: NZ col: NZ | MV_JOINT_HNZVNZ (3) |
| return (!!mv->col) | ((!!mv->row) << 1); |
| } |
| |
| static INLINE int av1_mv_class_base(MV_CLASS_TYPE c) { |
| return c ? CLASS0_SIZE << (c + 2) : 0; |
| } |
| |
| // If n != 0, returns the floor of log base 2 of n. If n == 0, returns 0. |
| static INLINE uint8_t av1_log_in_base_2(unsigned int n) { |
| // get_msb() is only valid when n != 0. |
| return n == 0 ? 0 : get_msb(n); |
| } |
| |
| static INLINE MV_CLASS_TYPE av1_get_mv_class(int z, int *offset) { |
| assert(z >= 0); |
| const MV_CLASS_TYPE c = (MV_CLASS_TYPE)av1_log_in_base_2(z >> 3); |
| assert(c <= MV_CLASS_10); |
| if (offset) *offset = z - av1_mv_class_base(c); |
| return c; |
| } |
| |
| static INLINE int av1_check_newmv_joint_nonzero(const AV1_COMMON *cm, |
| MACROBLOCK *const x) { |
| (void)cm; |
| MACROBLOCKD *xd = &x->e_mbd; |
| MB_MODE_INFO *mbmi = xd->mi[0]; |
| const PREDICTION_MODE this_mode = mbmi->mode; |
| if (this_mode == NEW_NEWMV) { |
| const int_mv ref_mv_0 = av1_get_ref_mv(x, 0); |
| const int_mv ref_mv_1 = av1_get_ref_mv(x, 1); |
| if (mbmi->mv[0].as_int == ref_mv_0.as_int || |
| mbmi->mv[1].as_int == ref_mv_1.as_int) { |
| return 0; |
| } |
| } else if (this_mode == NEAREST_NEWMV || this_mode == NEAR_NEWMV) { |
| const int_mv ref_mv_1 = av1_get_ref_mv(x, 1); |
| if (mbmi->mv[1].as_int == ref_mv_1.as_int) { |
| return 0; |
| } |
| } else if (this_mode == NEW_NEARESTMV || this_mode == NEW_NEARMV) { |
| const int_mv ref_mv_0 = av1_get_ref_mv(x, 0); |
| if (mbmi->mv[0].as_int == ref_mv_0.as_int) { |
| return 0; |
| } |
| } else if (this_mode == NEWMV) { |
| const int_mv ref_mv_0 = av1_get_ref_mv(x, 0); |
| if (mbmi->mv[0].as_int == ref_mv_0.as_int) { |
| return 0; |
| } |
| } |
| return 1; |
| } |
| #ifdef __cplusplus |
| } // extern "C" |
| #endif |
| |
| #endif // AOM_AV1_ENCODER_ENCODEMV_H_ |