chromium/third_party/blink/renderer/platform/mediastream/media_stream_audio_level_calculator.cc

// Copyright 2014 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifdef UNSAFE_BUFFERS_BUILD
// TODO(crbug.com/351564777): Remove this and convert code to safer constructs.
#pragma allow_unsafe_buffers
#endif

#include "third_party/blink/renderer/platform/mediastream/media_stream_audio_level_calculator.h"

#include <cmath>
#include <limits>

#include "base/check.h"
#include "base/memory/scoped_refptr.h"
#include "base/types/pass_key.h"
#include "media/base/audio_bus.h"

namespace blink {

namespace {

// Calculates the maximum absolute amplitude of the audio data.
float MaxAmplitude(const float* audio_data, int length) { … }

}  // namespace

MediaStreamAudioLevelCalculator::Level::Level(
    base::PassKey<MediaStreamAudioLevelCalculator>) { … }

MediaStreamAudioLevelCalculator::Level::~Level() = default;

float MediaStreamAudioLevelCalculator::Level::GetCurrent() const { … }

void MediaStreamAudioLevelCalculator::Level::Set(float level) { … }

MediaStreamAudioLevelCalculator::MediaStreamAudioLevelCalculator()
    : … { … }

MediaStreamAudioLevelCalculator::~MediaStreamAudioLevelCalculator() { … }

void MediaStreamAudioLevelCalculator::Calculate(
    const media::AudioBus& audio_bus,
    bool assume_nonzero_energy) { … }

}  // namespace blink