chromium/services/audio/sync_reader.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 "services/audio/sync_reader.h"

#include <algorithm>
#include <limits>
#include <string>
#include <utility>

#include "base/command_line.h"
#include "base/containers/span.h"
#include "base/format_macros.h"
#include "base/logging.h"
#include "base/metrics/histogram_functions.h"
#include "base/numerics/safe_conversions.h"
#include "base/strings/strcat.h"
#include "base/strings/stringprintf.h"
#include "base/trace_event/trace_event.h"
#include "build/build_config.h"
#include "build/chromeos_buildflags.h"
#include "media/audio/audio_device_thread.h"
#include "media/base/audio_parameters.h"
#include "media/base/media_switches.h"
#include "services/audio/output_glitch_counter.h"

AudioLatency;

namespace audio {

#if !BUILDFLAG(IS_MAC) && !BUILDFLAG(IS_CHROMEOS_ASH) && \
    !BUILDFLAG(IS_CHROMEOS_LACROS)
BASE_FEATURE(…);

const base::FeatureParam<double> kBufferDurationPercent{ … };
#endif

SyncReader::SyncReader(
    base::RepeatingCallback<void(const std::string&)> log_callback,
    const media::AudioParameters& params,
    base::CancelableSyncSocket* foreign_socket)
    : … { … }

SyncReader::SyncReader(
    base::RepeatingCallback<void(const std::string&)> log_callback,
    const media::AudioParameters& params,
    base::CancelableSyncSocket* foreign_socket,
    std::unique_ptr<OutputGlitchCounter> glitch_counter)
    : … { … }

SyncReader::~SyncReader() { … }

bool SyncReader::IsValid() const { … }

base::UnsafeSharedMemoryRegion SyncReader::TakeSharedMemoryRegion() { … }

// AudioOutputController::SyncReader implementations.
void SyncReader::RequestMoreData(base::TimeDelta delay,
                                 base::TimeTicks delay_timestamp,
                                 const media::AudioGlitchInfo& glitch_info) { … }

bool SyncReader::Read(media::AudioBus* dest, bool is_mixing) { … }

void SyncReader::Close() { … }

bool SyncReader::WaitUntilDataIsReady(bool is_mixing) { … }

}  // namespace audio