chromium/third_party/libaom/source/libaom/av1/common/scale.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 "config/aom_dsp_rtcd.h"
#include "config/av1_rtcd.h"

#include "av1/common/filter.h"
#include "av1/common/scale.h"
#include "aom_dsp/aom_filter.h"

static int get_fixed_point_scale_factor(int other_size, int this_size) { … }

// Given the fixed point scale, calculate coarse point scale.
static int fixed_point_scale_to_coarse_point_scale(int scale_fp) { … }

// Note: x and y are integer precision, mvq4 is q4 precision.
MV32 av1_scale_mv(const MV *mvq4, int x, int y,
                  const struct scale_factors *sf) { … }

void av1_setup_scale_factors_for_frame(struct scale_factors *sf, int other_w,
                                       int other_h, int this_w, int this_h) { … }