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// 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 <memory>
#include "base/command_line.h"
#include "base/logging.h"
#include "base/metrics/histogram_macros.h"
#include "build/chromeos_buildflags.h"
#include "media/audio/fake_audio_manager.h"
#include "media/base/media_switches.h"
#if defined(USE_ALSA)
#include "media/audio/alsa/audio_manager_alsa.h"
#endif
#if defined(USE_CRAS) && BUILDFLAG(IS_ASH)
#include "media/audio/cras/audio_manager_chromeos.h"
#elif defined(USE_CRAS)
#include "media/audio/cras/audio_manager_cras.h"
#endif
#if defined(USE_PULSEAUDIO)
#include "media/audio/pulse/audio_manager_pulse.h"
#include "media/audio/pulse/pulse_util.h"
#endif
namespace media {
enum LinuxAudioIO {
kPulse,
kAlsa,
kCras,
kAudioIOMax = kCras // Must always be equal to largest logged entry.
};
std::unique_ptr<media::AudioManager> CreateAudioManager(
std::unique_ptr<AudioThread> audio_thread,
AudioLogFactory* audio_log_factory) {
// 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_CRAS)
if (base::CommandLine::ForCurrentProcess()->HasSwitch(switches::kUseCras)) {
UMA_HISTOGRAM_ENUMERATION("Media.LinuxAudioIO", kCras, kAudioIOMax + 1);
#if BUILDFLAG(IS_ASH)
return std::make_unique<AudioManagerChromeOS>(std::move(audio_thread),
audio_log_factory);
#else
return std::make_unique<AudioManagerCras>(std::move(audio_thread),
audio_log_factory);
#endif
}
#endif // defined(USE_CRAS)
#if defined(USE_PULSEAUDIO)
pa_threaded_mainloop* pa_mainloop = nullptr;
pa_context* pa_context = nullptr;
if (pulse::InitPulse(&pa_mainloop, &pa_context)) {
UMA_HISTOGRAM_ENUMERATION("Media.LinuxAudioIO", kPulse, kAudioIOMax + 1);
return std::make_unique<AudioManagerPulse>(
std::move(audio_thread), audio_log_factory, pa_mainloop, pa_context);
}
LOG(WARNING) << "Falling back to ALSA for audio output. PulseAudio is not "
"available or could not be initialized.";
#endif
#if defined(USE_ALSA)
UMA_HISTOGRAM_ENUMERATION("Media.LinuxAudioIO", kAlsa, kAudioIOMax + 1);
return std::make_unique<AudioManagerAlsa>(std::move(audio_thread),
audio_log_factory);
#else
return std::make_unique<FakeAudioManager>(std::move(audio_thread),
audio_log_factory);
#endif
}
} // namespace media
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