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--- media/audio/sndio/audio_manager_sndio.cc.orig 2022-10-24 13:33:33 UTC
+++ media/audio/sndio/audio_manager_sndio.cc
@@ -0,0 +1,181 @@
+// Copyright (c) 2012 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 "base/command_line.h"
+#include "base/metrics/histogram_macros.h"
+#include "base/memory/ptr_util.h"
+
+#include "media/audio/sndio/audio_manager_sndio.h"
+
+#include "media/audio/audio_device_description.h"
+#include "media/audio/audio_output_dispatcher.h"
+#if defined(USE_SNDIO)
+#include "media/audio/sndio/sndio_input.h"
+#include "media/audio/sndio/sndio_output.h"
+#endif
+#include "media/audio/fake_audio_manager.h"
+#include "media/base/limits.h"
+#include "media/base/media_switches.h"
+
+namespace media {
+
+enum SndioAudioIO {
+ kPulse,
+ kSndio,
+ kAudioIOMax = kSndio
+};
+
+#if defined(USE_SNDIO)
+// Maximum number of output streams that can be open simultaneously.
+static const int kMaxOutputStreams = 50;
+
+// Default sample rate for input and output streams.
+static const int kDefaultSampleRate = 48000;
+
+void AddDefaultDevice(AudioDeviceNames* device_names) {
+ DCHECK(device_names->empty());
+ device_names->push_front(AudioDeviceName::CreateDefault());
+}
+
+bool AudioManagerSndio::HasAudioOutputDevices() {
+ return true;
+}
+
+bool AudioManagerSndio::HasAudioInputDevices() {
+ return true;
+}
+
+void AudioManagerSndio::GetAudioInputDeviceNames(
+ AudioDeviceNames* device_names) {
+ DCHECK(device_names->empty());
+ AddDefaultDevice(device_names);
+}
+
+void AudioManagerSndio::GetAudioOutputDeviceNames(
+ AudioDeviceNames* device_names) {
+ AddDefaultDevice(device_names);
+}
+
+#if defined(USE_SNDIO)
+const char* AudioManagerSndio::GetName() {
+ return "SNDIO";
+}
+#endif
+
+AudioParameters AudioManagerSndio::GetInputStreamParameters(
+ const std::string& device_id) {
+ static const int kDefaultInputBufferSize = 1024;
+
+ int user_buffer_size = GetUserBufferSize();
+ int buffer_size = user_buffer_size ?
+ user_buffer_size : kDefaultInputBufferSize;
+
+ return AudioParameters(
+ AudioParameters::AUDIO_PCM_LOW_LATENCY, ChannelLayoutConfig::Stereo(),
+ kDefaultSampleRate, buffer_size);
+}
+
+AudioManagerSndio::AudioManagerSndio(std::unique_ptr<AudioThread> audio_thread,
+ AudioLogFactory* audio_log_factory)
+ : AudioManagerBase(std::move(audio_thread),
+ audio_log_factory) {
+ DLOG(WARNING) << "AudioManagerSndio";
+ SetMaxOutputStreamsAllowed(kMaxOutputStreams);
+}
+
+AudioManagerSndio::~AudioManagerSndio() = default;
+
+AudioOutputStream* AudioManagerSndio::MakeLinearOutputStream(
+ const AudioParameters& params,
+ const LogCallback& log_callback) {
+ DCHECK_EQ(AudioParameters::AUDIO_PCM_LINEAR, params.format());
+ return MakeOutputStream(params);
+}
+
+AudioOutputStream* AudioManagerSndio::MakeLowLatencyOutputStream(
+ const AudioParameters& params,
+ const std::string& device_id,
+ const LogCallback& log_callback) {
+ DLOG_IF(ERROR, !device_id.empty()) << "Not implemented!";
+ DCHECK_EQ(AudioParameters::AUDIO_PCM_LOW_LATENCY, params.format());
+ return MakeOutputStream(params);
+}
+
+AudioInputStream* AudioManagerSndio::MakeLinearInputStream(
+ const AudioParameters& params,
+ const std::string& device_id,
+ const LogCallback& log_callback) {
+ DCHECK_EQ(AudioParameters::AUDIO_PCM_LINEAR, params.format());
+ return MakeInputStream(params);
+}
+
+AudioInputStream* AudioManagerSndio::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);
+}
+
+AudioParameters AudioManagerSndio::GetPreferredOutputStreamParameters(
+ const std::string& output_device_id,
+ const AudioParameters& input_params) {
+ // TODO(tommi): Support |output_device_id|.
+ DLOG_IF(ERROR, !output_device_id.empty()) << "Not implemented!";
+ static const int kDefaultOutputBufferSize = 2048;
+
+ ChannelLayoutConfig channel_layout_config = ChannelLayoutConfig::Stereo();
+ int sample_rate = kDefaultSampleRate;
+ int buffer_size = kDefaultOutputBufferSize;
+ if (input_params.IsValid()) {
+ sample_rate = input_params.sample_rate();
+ channel_layout_config = input_params.channel_layout_config();
+ buffer_size = std::min(buffer_size, input_params.frames_per_buffer());
+ }
+
+ int user_buffer_size = GetUserBufferSize();
+ if (user_buffer_size)
+ buffer_size = user_buffer_size;
+
+ return AudioParameters(
+ AudioParameters::AUDIO_PCM_LOW_LATENCY,
+ channel_layout_config, sample_rate, buffer_size);
+}
+
+AudioInputStream* AudioManagerSndio::MakeInputStream(
+ const AudioParameters& params) {
+ DLOG(WARNING) << "MakeInputStream";
+ return new SndioAudioInputStream(this,
+ AudioDeviceDescription::kDefaultDeviceId, params);
+}
+
+AudioOutputStream* AudioManagerSndio::MakeOutputStream(
+ const AudioParameters& params) {
+ DLOG(WARNING) << "MakeOutputStream";
+ return new SndioAudioOutputStream(params, this);
+}
+#endif
+
+std::unique_ptr<media::AudioManager> CreateAudioManager(
+ std::unique_ptr<AudioThread> audio_thread,
+ AudioLogFactory* audio_log_factory) {
+ DLOG(WARNING) << "CreateAudioManager";
+ // For testing allow audio output to be disabled.
+ if (base::CommandLine::ForCurrentProcess()->HasSwitch(
+ switches::kDisableAudioOutput)) {
+ return std::make_unique<FakeAudioManager>(std::move(audio_thread),
+ audio_log_factory);
+ }
+#if defined(USE_SNDIO)
+ UMA_HISTOGRAM_ENUMERATION("Media.SndioAudioIO", kSndio, kAudioIOMax + 1);
+ return std::make_unique<AudioManagerSndio>(std::move(audio_thread),
+ audio_log_factory);
+#else
+ return std::make_unique<FakeAudioManager>(std::move(audio_thread),
+ audio_log_factory);
+#endif
+
+}
+
+} // namespace media
|
