blob: f1cd6922ad331cd0cc967ec30e2c6d501d560fe2 [file] [log] [blame]
Kaido Kert08336fa2022-02-08 14:10:50 -08001// Copyright 2016 The Chromium Authors. All rights reserved.
2// Use of this source code is governed by a BSD-style license that can be
3// found in the LICENSE file.
4
5#include "media/audio/audio_thread_impl.h"
6
7#include "base/message_loop/message_pump_type.h"
8#include "base/threading/thread_task_runner_handle.h"
9#include "base/time/default_tick_clock.h"
10#include "build/build_config.h"
11#include "media/audio/audio_thread_hang_monitor.h"
12#include "third_party/abseil-cpp/absl/types/optional.h"
13
14namespace media {
15
16AudioThreadImpl::AudioThreadImpl()
17 : thread_("AudioThread"),
18 hang_monitor_(nullptr, base::OnTaskRunnerDeleter(nullptr)) {
19 base::Thread::Options thread_options;
20#if defined(OS_WIN)
21 thread_.init_com_with_mta(true);
22#elif defined(OS_FUCHSIA)
23 // FIDL-based APIs require async_t, which is initialized on IO thread.
24 thread_options.message_pump_type = base::MessagePumpType::IO;
25 thread_options.priority = base::ThreadPriority::REALTIME_AUDIO;
26#endif
27 CHECK(thread_.StartWithOptions(std::move(thread_options)));
28
29#if defined(OS_MAC)
30 // On Mac, the audio task runner must belong to the main thread.
31 // See http://crbug.com/158170.
32 task_runner_ = base::ThreadTaskRunnerHandle::Get();
33#else
34 task_runner_ = thread_.task_runner();
35#endif
36 worker_task_runner_ = thread_.task_runner();
37
38#if !defined(OS_MAC) && !defined(OS_ANDROID)
39 // Since we run on the main thread on Mac, we don't need a hang monitor.
40 // https://crbug.com/946968: The hang monitor possibly causes crashes on
41 // Android
42 hang_monitor_ = AudioThreadHangMonitor::Create(
43 AudioThreadHangMonitor::HangAction::kDoNothing, absl::nullopt,
44 base::DefaultTickClock::GetInstance(), task_runner_);
45#endif
46}
47
48AudioThreadImpl::~AudioThreadImpl() {
49 DCHECK_CALLED_ON_VALID_THREAD(thread_checker_);
50}
51
52void AudioThreadImpl::Stop() {
53 DCHECK_CALLED_ON_VALID_THREAD(thread_checker_);
54
55 hang_monitor_.reset();
56
57 // Note that on MACOSX, we can still have tasks posted on the |task_runner_|,
58 // since it is the main thread task runner and we do not stop the main thread.
59 // But this is fine because none of those tasks will actually run.
60 thread_.Stop();
61}
62
63bool AudioThreadImpl::IsHung() const {
64 DCHECK_CALLED_ON_VALID_THREAD(thread_checker_);
65 return hang_monitor_ ? hang_monitor_->IsAudioThreadHung() : false;
66}
67
68base::SingleThreadTaskRunner* AudioThreadImpl::GetTaskRunner() {
69 return task_runner_.get();
70}
71
72base::SingleThreadTaskRunner* AudioThreadImpl::GetWorkerTaskRunner() {
73 return worker_task_runner_.get();
74}
75
76} // namespace media