| // Copyright 2013 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #include "media/audio/cras/audio_manager_cras_base.h" |
| |
| #include <stddef.h> |
| |
| #include <algorithm> |
| #include <map> |
| #include <utility> |
| |
| #include "base/bind.h" |
| #include "base/check_op.h" |
| #include "base/command_line.h" |
| #include "base/environment.h" |
| #include "base/metrics/field_trial_params.h" |
| #include "base/nix/xdg_util.h" |
| #include "base/strings/string_number_conversions.h" |
| #include "base/synchronization/waitable_event.h" |
| #include "base/system/sys_info.h" |
| #include "base/threading/thread_task_runner_handle.h" |
| #include "media/audio/audio_device_description.h" |
| #include "media/audio/audio_features.h" |
| #include "media/audio/cras/cras_input.h" |
| #include "media/audio/cras/cras_unified.h" |
| #include "media/base/channel_layout.h" |
| #include "media/base/limits.h" |
| #include "media/base/localized_strings.h" |
| |
| namespace media { |
| namespace { |
| |
| // Maximum number of output streams that can be open simultaneously. |
| const int kMaxOutputStreams = 50; |
| |
| } // namespace |
| |
| AudioManagerCrasBase::AudioManagerCrasBase( |
| std::unique_ptr<AudioThread> audio_thread, |
| AudioLogFactory* audio_log_factory) |
| : AudioManagerBase(std::move(audio_thread), audio_log_factory) { |
| SetMaxOutputStreamsAllowed(kMaxOutputStreams); |
| } |
| |
| AudioManagerCrasBase::~AudioManagerCrasBase() = default; |
| |
| const char* AudioManagerCrasBase::GetName() { |
| return "CRAS"; |
| } |
| |
| AudioOutputStream* AudioManagerCrasBase::MakeLinearOutputStream( |
| const AudioParameters& params, |
| const LogCallback& log_callback) { |
| DCHECK_EQ(AudioParameters::AUDIO_PCM_LINEAR, params.format()); |
| // Pinning stream is not supported for MakeLinearOutputStream. |
| return MakeOutputStream(params, AudioDeviceDescription::kDefaultDeviceId); |
| } |
| |
| AudioOutputStream* AudioManagerCrasBase::MakeLowLatencyOutputStream( |
| const AudioParameters& params, |
| const std::string& device_id, |
| const LogCallback& log_callback) { |
| DCHECK_EQ(AudioParameters::AUDIO_PCM_LOW_LATENCY, params.format()); |
| return MakeOutputStream(params, device_id); |
| } |
| |
| AudioInputStream* AudioManagerCrasBase::MakeLinearInputStream( |
| const AudioParameters& params, |
| const std::string& device_id, |
| const LogCallback& log_callback) { |
| DCHECK_EQ(AudioParameters::AUDIO_PCM_LINEAR, params.format()); |
| return MakeInputStream(params, device_id); |
| } |
| |
| AudioInputStream* AudioManagerCrasBase::MakeLowLatencyInputStream( |
| const AudioParameters& params, |
| const std::string& device_id, |
| const LogCallback& log_callback) { |
| DCHECK_EQ(AudioParameters::AUDIO_PCM_LOW_LATENCY, params.format()); |
| return MakeInputStream(params, device_id); |
| } |
| |
| AudioOutputStream* AudioManagerCrasBase::MakeOutputStream( |
| const AudioParameters& params, |
| const std::string& device_id) { |
| return new CrasUnifiedStream(params, this, device_id); |
| } |
| |
| AudioInputStream* AudioManagerCrasBase::MakeInputStream( |
| const AudioParameters& params, const std::string& device_id) { |
| return new CrasInputStream(params, this, device_id); |
| } |
| |
| } // namespace media |