chromium/third_party/libaom/source/libaom/av1/encoder/encodemv.c

/*
 * 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 <math.h>

#include "av1/common/common.h"
#include "av1/common/entropymode.h"

#include "av1/encoder/cost.h"
#include "av1/encoder/encodemv.h"

#include "aom_dsp/aom_dsp_common.h"
#include "aom_ports/bitops.h"

static void update_mv_component_stats(int comp, nmv_component *mvcomp,
                                      MvSubpelPrecision precision) { … }

void av1_update_mv_stats(const MV *mv, const MV *ref, nmv_context *mvctx,
                         MvSubpelPrecision precision) { … }

static void encode_mv_component(aom_writer *w, int comp, nmv_component *mvcomp,
                                MvSubpelPrecision precision) { … }

/* TODO([email protected]): This function writes MV_VALS ints or 128 KiB. This
 *   is more than most L1D caches and is a significant chunk of L2. Write
 *   SIMD that uses streaming writes to avoid loading all of that into L1, or
 *   just don't update the larger component costs every time this called
 *   (or both).
 */
void av1_build_nmv_component_cost_table(int *mvcost,
                                        const nmv_component *const mvcomp,
                                        MvSubpelPrecision precision) { … }

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_encode_dv(aom_writer *w, const MV *mv, const MV *ref,
                   nmv_context *mvctx) { … }

void av1_build_nmv_cost_table(int *mvjoint, int *mvcost[2],
                              const nmv_context *ctx,
                              MvSubpelPrecision precision) { … }

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) { … }

int_mv av1_get_ref_mv(const MACROBLOCK *x, int ref_idx) { … }

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) { … }