1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
|
// 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 "third_party/blink/public/web/modules/media/audio/web_audio_device_factory.h"
#include <algorithm>
#include "base/bind.h"
#include "base/check.h"
#include "base/metrics/histogram_macros.h"
#include "base/no_destructor.h"
#include "base/notreached.h"
#include "base/task/post_task.h"
#include "base/task/thread_pool.h"
#include "base/threading/platform_thread.h"
#include "build/build_config.h"
#include "build/chromeos_buildflags.h"
#include "media/audio/audio_input_device.h"
#include "media/audio/audio_output_device.h"
#include "media/base/audio_renderer_mixer_input.h"
#include "third_party/blink/public/platform/platform.h"
#include "third_party/blink/public/web/modules/media/audio/web_audio_input_ipc_factory.h"
#include "third_party/blink/public/web/modules/media/audio/web_audio_output_ipc_factory.h"
#include "third_party/blink/renderer/modules/media/audio/audio_renderer_mixer_manager.h"
#include "third_party/blink/renderer/modules/media/audio/audio_renderer_sink_cache.h"
#include "third_party/blink/renderer/platform/wtf/wtf.h"
namespace blink {
// static
WebAudioDeviceFactory* WebAudioDeviceFactory::factory_ = nullptr;
namespace {
#if defined(OS_WIN) || defined(OS_MAC) || defined(OS_LINUX) || \
BUILDFLAG(IS_CHROMEOS_LACROS)
// Due to driver deadlock issues on Windows (http://crbug/422522) there is a
// chance device authorization response is never received from the browser side.
// In this case we will time out, to avoid renderer hang forever waiting for
// device authorization (http://crbug/615589). This will result in "no audio".
// There are also cases when authorization takes too long on Mac and Linux.
constexpr base::TimeDelta kMaxAuthorizationTimeout =
base::TimeDelta::FromSeconds(10);
#else
constexpr base::TimeDelta kMaxAuthorizationTimeout; // No timeout.
#endif
base::TimeDelta GetDefaultAuthTimeout() {
// Set authorization request timeout at 80% of renderer hung timeout,
// but no more than kMaxAuthorizationTimeout.
return std::min(Platform::Current()->GetHungRendererDelay() * 8 / 10,
kMaxAuthorizationTimeout);
}
scoped_refptr<media::AudioOutputDevice> NewOutputDevice(
const blink::LocalFrameToken& frame_token,
const media::AudioSinkParameters& params,
base::TimeDelta auth_timeout) {
CHECK(blink::WebAudioOutputIPCFactory::GetInstance().io_task_runner());
auto device = base::MakeRefCounted<media::AudioOutputDevice>(
blink::WebAudioOutputIPCFactory::GetInstance().CreateAudioOutputIPC(
frame_token),
blink::WebAudioOutputIPCFactory::GetInstance().io_task_runner(), params,
auth_timeout);
device->RequestDeviceAuthorization();
return device;
}
// This is where we decide which audio will go to mixers and which one to
// AudioOutputDevice directly.
bool IsMixable(blink::WebAudioDeviceSourceType source_type) {
// Media element must ALWAYS go through mixer.
return source_type == blink::WebAudioDeviceSourceType::kMediaElement;
}
scoped_refptr<media::SwitchableAudioRendererSink> NewMixableSink(
blink::WebAudioDeviceSourceType source_type,
const blink::LocalFrameToken& frame_token,
const media::AudioSinkParameters& params) {
DCHECK(IsMainThread()) << __func__ << "() is called on a wrong thread.";
DCHECK(!params.processing_id.has_value());
return AudioRendererMixerManager::GetInstance().CreateInput(
frame_token, params.session_id, params.device_id,
WebAudioDeviceFactory::GetSourceLatencyType(source_type));
}
} // namespace
media::AudioLatency::LatencyType WebAudioDeviceFactory::GetSourceLatencyType(
blink::WebAudioDeviceSourceType source) {
switch (source) {
case blink::WebAudioDeviceSourceType::kWebAudioInteractive:
return media::AudioLatency::LATENCY_INTERACTIVE;
case blink::WebAudioDeviceSourceType::kNone:
case blink::WebAudioDeviceSourceType::kWebRtc:
case blink::WebAudioDeviceSourceType::kNonRtcAudioTrack:
case blink::WebAudioDeviceSourceType::kWebAudioBalanced:
return media::AudioLatency::LATENCY_RTC;
case blink::WebAudioDeviceSourceType::kMediaElement:
case blink::WebAudioDeviceSourceType::kWebAudioPlayback:
return media::AudioLatency::LATENCY_PLAYBACK;
case blink::WebAudioDeviceSourceType::kWebAudioExact:
return media::AudioLatency::LATENCY_EXACT_MS;
}
NOTREACHED();
return media::AudioLatency::LATENCY_INTERACTIVE;
}
scoped_refptr<media::AudioRendererSink>
WebAudioDeviceFactory::NewAudioRendererMixerSink(
const blink::LocalFrameToken& frame_token,
const media::AudioSinkParameters& params) {
// AudioRendererMixer sinks are always used asynchronously and thus can
// operate without a timeout value.
return NewFinalAudioRendererSink(frame_token, params, base::TimeDelta());
}
// static
scoped_refptr<media::AudioRendererSink>
WebAudioDeviceFactory::NewAudioRendererSink(
blink::WebAudioDeviceSourceType source_type,
const blink::LocalFrameToken& frame_token,
const media::AudioSinkParameters& params) {
if (factory_) {
scoped_refptr<media::AudioRendererSink> device =
factory_->CreateAudioRendererSink(source_type, frame_token, params);
if (device)
return device;
}
// Perhaps streams with a processing ID just shouldn't be mixable, i.e. call
// NewFinalAudioRendererSink for them rather than DCHECK?
DCHECK(!(params.processing_id.has_value() && IsMixable(source_type)));
if (IsMixable(source_type))
return NewMixableSink(source_type, frame_token, params);
UMA_HISTOGRAM_BOOLEAN("Media.Audio.Render.SinkCache.UsedForSinkCreation",
false);
return NewFinalAudioRendererSink(frame_token, params,
GetDefaultAuthTimeout());
}
// static
scoped_refptr<media::SwitchableAudioRendererSink>
WebAudioDeviceFactory::NewSwitchableAudioRendererSink(
blink::WebAudioDeviceSourceType source_type,
const blink::LocalFrameToken& frame_token,
const media::AudioSinkParameters& params) {
if (factory_) {
scoped_refptr<media::SwitchableAudioRendererSink> sink =
factory_->CreateSwitchableAudioRendererSink(source_type, frame_token,
params);
if (sink)
return sink;
}
if (IsMixable(source_type))
return NewMixableSink(source_type, frame_token, params);
// AudioOutputDevice is not RestartableAudioRendererSink, so we can't return
// anything for those who wants to create an unmixable sink.
NOTIMPLEMENTED();
return nullptr;
}
// static
scoped_refptr<media::AudioCapturerSource>
WebAudioDeviceFactory::NewAudioCapturerSource(
const blink::LocalFrameToken& frame_token,
const media::AudioSourceParameters& params) {
if (factory_) {
// We don't pass on |session_id|, as this branch is only used for tests.
scoped_refptr<media::AudioCapturerSource> source =
factory_->CreateAudioCapturerSource(frame_token, params);
if (source)
return source;
}
return base::MakeRefCounted<media::AudioInputDevice>(
blink::WebAudioInputIPCFactory::GetInstance().CreateAudioInputIPC(
frame_token, params),
media::AudioInputDevice::Purpose::kUserInput,
media::AudioInputDevice::DeadStreamDetection::kEnabled);
}
// static
media::OutputDeviceInfo WebAudioDeviceFactory::GetOutputDeviceInfo(
const blink::LocalFrameToken& frame_token,
const media::AudioSinkParameters& params) {
DCHECK(IsMainThread()) << __func__ << "() is called on a wrong thread.";
constexpr base::TimeDelta kDeleteTimeout =
base::TimeDelta::FromMilliseconds(5000);
// There's one process wide instance that lives on the render thread.
static base::NoDestructor<AudioRendererSinkCache> cache(
base::ThreadPool::CreateSequencedTaskRunner(
{base::TaskPriority::BEST_EFFORT,
base::TaskShutdownBehavior::CONTINUE_ON_SHUTDOWN}),
base::BindRepeating(&WebAudioDeviceFactory::NewAudioRendererSink,
blink::WebAudioDeviceSourceType::kNone),
kDeleteTimeout);
return cache->GetSinkInfo(frame_token, params.session_id, params.device_id);
}
WebAudioDeviceFactory::WebAudioDeviceFactory() {
DCHECK(!factory_) << "Can't register two factories at once.";
factory_ = this;
}
WebAudioDeviceFactory::~WebAudioDeviceFactory() {
factory_ = nullptr;
}
// static
scoped_refptr<media::AudioRendererSink>
WebAudioDeviceFactory::NewFinalAudioRendererSink(
const blink::LocalFrameToken& frame_token,
const media::AudioSinkParameters& params,
base::TimeDelta auth_timeout) {
if (factory_) {
scoped_refptr<media::AudioRendererSink> sink =
factory_->CreateFinalAudioRendererSink(frame_token, params,
auth_timeout);
if (sink)
return sink;
}
return NewOutputDevice(frame_token, params, auth_timeout);
}
} // namespace blink
|
