chromium/media/base/channel_mixing_matrix.cc

// Copyright 2012 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include "media/base/channel_mixing_matrix.h"

#include <stddef.h>

#include "base/check_op.h"
#include "base/containers/contains.h"
#include "base/ranges/algorithm.h"
#include "media/base/channel_mixer.h"

namespace media {

static void ValidateLayout(ChannelLayout layout) { … }

ChannelMixingMatrix::ChannelMixingMatrix(ChannelLayout input_layout,
                                         int input_channels,
                                         ChannelLayout output_layout,
                                         int output_channels)
    : … { … }

ChannelMixingMatrix::~ChannelMixingMatrix() = default;

bool ChannelMixingMatrix::CreateTransformationMatrix(
    std::vector<std::vector<float>>* matrix) { … }

void ChannelMixingMatrix::AccountFor(Channels ch) { … }

bool ChannelMixingMatrix::IsUnaccounted(Channels ch) const { … }

bool ChannelMixingMatrix::IsMonoInputLayout() const { … }

bool ChannelMixingMatrix::IsMonoOutputLayout() const { … }

bool ChannelMixingMatrix::HasInputChannel(Channels ch) const { … }

bool ChannelMixingMatrix::HasOutputChannel(Channels ch) const { … }

void ChannelMixingMatrix::Mix(Channels input_ch,
                              Channels output_ch,
                              float scale) { … }

void ChannelMixingMatrix::MixWithoutAccounting(Channels input_ch,
                                               Channels output_ch,
                                               float scale) { … }

}  // namespace media