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1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #include "content/renderer/pepper/pepper_platform_audio_output.h" | 5 #include "content/renderer/pepper/pepper_platform_audio_output.h" |
6 | 6 |
7 #include "base/bind.h" | 7 #include "base/bind.h" |
8 #include "base/logging.h" | 8 #include "base/logging.h" |
9 #include "base/message_loop/message_loop_proxy.h" | 9 #include "base/message_loop/message_loop_proxy.h" |
10 #include "build/build_config.h" | 10 #include "build/build_config.h" |
11 #include "content/child/child_process.h" | 11 #include "content/child/child_process.h" |
12 #include "content/common/media/audio_messages.h" | 12 #include "content/common/media/audio_messages.h" |
13 #include "content/renderer/media/audio_message_filter.h" | 13 #include "content/renderer/media/audio_message_filter.h" |
14 #include "content/renderer/pepper/audio_helper.h" | 14 #include "content/renderer/pepper/audio_helper.h" |
15 #include "content/renderer/render_thread_impl.h" | 15 #include "content/renderer/render_thread_impl.h" |
16 #include "media/base/audio_hardware_config.h" | 16 #include "media/base/audio_hardware_config.h" |
17 #include "ppapi/shared_impl/ppb_audio_config_shared.h" | 17 #include "ppapi/shared_impl/ppb_audio_config_shared.h" |
18 | 18 |
19 namespace content { | 19 namespace content { |
20 | 20 |
21 // static | 21 // static |
22 PepperPlatformAudioOutput* PepperPlatformAudioOutput::Create( | 22 PepperPlatformAudioOutput* PepperPlatformAudioOutput::Create( |
23 int sample_rate, | 23 int sample_rate, |
24 int frames_per_buffer, | 24 int frames_per_buffer, |
25 int source_render_view_id, | 25 int source_render_view_id, |
26 int source_render_frame_id, | 26 int source_render_frame_id, |
27 AudioHelper* client) { | 27 AudioHelper* client) { |
28 scoped_refptr<PepperPlatformAudioOutput> audio_output( | 28 scoped_refptr<PepperPlatformAudioOutput> audio_output( |
29 new PepperPlatformAudioOutput()); | 29 new PepperPlatformAudioOutput()); |
30 if (audio_output->Initialize(sample_rate, frames_per_buffer, | 30 if (audio_output->Initialize(sample_rate, |
31 source_render_view_id, source_render_frame_id, | 31 frames_per_buffer, |
| 32 source_render_view_id, |
| 33 source_render_frame_id, |
32 client)) { | 34 client)) { |
33 // Balanced by Release invoked in | 35 // Balanced by Release invoked in |
34 // PepperPlatformAudioOutput::ShutDownOnIOThread(). | 36 // PepperPlatformAudioOutput::ShutDownOnIOThread(). |
35 audio_output->AddRef(); | 37 audio_output->AddRef(); |
36 return audio_output.get(); | 38 return audio_output.get(); |
37 } | 39 } |
38 return NULL; | 40 return NULL; |
39 } | 41 } |
40 | 42 |
41 bool PepperPlatformAudioOutput::StartPlayback() { | 43 bool PepperPlatformAudioOutput::StartPlayback() { |
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61 void PepperPlatformAudioOutput::ShutDown() { | 63 void PepperPlatformAudioOutput::ShutDown() { |
62 // Called on the main thread to stop all audio callbacks. We must only change | 64 // Called on the main thread to stop all audio callbacks. We must only change |
63 // the client on the main thread, and the delegates from the I/O thread. | 65 // the client on the main thread, and the delegates from the I/O thread. |
64 client_ = NULL; | 66 client_ = NULL; |
65 io_message_loop_proxy_->PostTask( | 67 io_message_loop_proxy_->PostTask( |
66 FROM_HERE, | 68 FROM_HERE, |
67 base::Bind(&PepperPlatformAudioOutput::ShutDownOnIOThread, this)); | 69 base::Bind(&PepperPlatformAudioOutput::ShutDownOnIOThread, this)); |
68 } | 70 } |
69 | 71 |
70 void PepperPlatformAudioOutput::OnStateChanged( | 72 void PepperPlatformAudioOutput::OnStateChanged( |
71 media::AudioOutputIPCDelegate::State state) { | 73 media::AudioOutputIPCDelegate::State state) {} |
72 } | |
73 | 74 |
74 void PepperPlatformAudioOutput::OnStreamCreated( | 75 void PepperPlatformAudioOutput::OnStreamCreated( |
75 base::SharedMemoryHandle handle, | 76 base::SharedMemoryHandle handle, |
76 base::SyncSocket::Handle socket_handle, | 77 base::SyncSocket::Handle socket_handle, |
77 int length) { | 78 int length) { |
78 #if defined(OS_WIN) | 79 #if defined(OS_WIN) |
79 DCHECK(handle); | 80 DCHECK(handle); |
80 DCHECK(socket_handle); | 81 DCHECK(socket_handle); |
81 #else | 82 #else |
82 DCHECK_NE(-1, handle.fd); | 83 DCHECK_NE(-1, handle.fd); |
83 DCHECK_NE(-1, socket_handle); | 84 DCHECK_NE(-1, socket_handle); |
84 #endif | 85 #endif |
85 DCHECK(length); | 86 DCHECK(length); |
86 | 87 |
87 if (base::MessageLoopProxy::current().get() == | 88 if (base::MessageLoopProxy::current().get() == |
88 main_message_loop_proxy_.get()) { | 89 main_message_loop_proxy_.get()) { |
89 // Must dereference the client only on the main thread. Shutdown may have | 90 // Must dereference the client only on the main thread. Shutdown may have |
90 // occurred while the request was in-flight, so we need to NULL check. | 91 // occurred while the request was in-flight, so we need to NULL check. |
91 if (client_) | 92 if (client_) |
92 client_->StreamCreated(handle, length, socket_handle); | 93 client_->StreamCreated(handle, length, socket_handle); |
93 } else { | 94 } else { |
94 main_message_loop_proxy_->PostTask(FROM_HERE, | 95 main_message_loop_proxy_->PostTask( |
95 base::Bind(&PepperPlatformAudioOutput::OnStreamCreated, this, handle, | 96 FROM_HERE, |
96 socket_handle, length)); | 97 base::Bind(&PepperPlatformAudioOutput::OnStreamCreated, |
| 98 this, |
| 99 handle, |
| 100 socket_handle, |
| 101 length)); |
97 } | 102 } |
98 } | 103 } |
99 | 104 |
100 void PepperPlatformAudioOutput::OnIPCClosed() { | 105 void PepperPlatformAudioOutput::OnIPCClosed() { ipc_.reset(); } |
101 ipc_.reset(); | |
102 } | |
103 | 106 |
104 PepperPlatformAudioOutput::~PepperPlatformAudioOutput() { | 107 PepperPlatformAudioOutput::~PepperPlatformAudioOutput() { |
105 // Make sure we have been shut down. Warning: this will usually happen on | 108 // Make sure we have been shut down. Warning: this will usually happen on |
106 // the I/O thread! | 109 // the I/O thread! |
107 DCHECK(!ipc_); | 110 DCHECK(!ipc_); |
108 DCHECK(!client_); | 111 DCHECK(!client_); |
109 } | 112 } |
110 | 113 |
111 PepperPlatformAudioOutput::PepperPlatformAudioOutput() | 114 PepperPlatformAudioOutput::PepperPlatformAudioOutput() |
112 : client_(NULL), | 115 : client_(NULL), |
113 main_message_loop_proxy_(base::MessageLoopProxy::current()), | 116 main_message_loop_proxy_(base::MessageLoopProxy::current()), |
114 io_message_loop_proxy_(ChildProcess::current()->io_message_loop_proxy()) { | 117 io_message_loop_proxy_(ChildProcess::current()->io_message_loop_proxy()) { |
115 } | 118 } |
116 | 119 |
117 bool PepperPlatformAudioOutput::Initialize( | 120 bool PepperPlatformAudioOutput::Initialize(int sample_rate, |
118 int sample_rate, | 121 int frames_per_buffer, |
119 int frames_per_buffer, | 122 int source_render_view_id, |
120 int source_render_view_id, | 123 int source_render_frame_id, |
121 int source_render_frame_id, | 124 AudioHelper* client) { |
122 AudioHelper* client) { | |
123 DCHECK(client); | 125 DCHECK(client); |
124 client_ = client; | 126 client_ = client; |
125 | 127 |
126 RenderThreadImpl* const render_thread = RenderThreadImpl::current(); | 128 RenderThreadImpl* const render_thread = RenderThreadImpl::current(); |
127 ipc_ = render_thread->audio_message_filter()-> | 129 ipc_ = render_thread->audio_message_filter()->CreateAudioOutputIPC( |
128 CreateAudioOutputIPC(source_render_view_id, source_render_frame_id); | 130 source_render_view_id, source_render_frame_id); |
129 CHECK(ipc_); | 131 CHECK(ipc_); |
130 | 132 |
131 media::AudioParameters params( | 133 media::AudioParameters params(media::AudioParameters::AUDIO_PCM_LOW_LATENCY, |
132 media::AudioParameters::AUDIO_PCM_LOW_LATENCY, | 134 media::CHANNEL_LAYOUT_STEREO, |
133 media::CHANNEL_LAYOUT_STEREO, sample_rate, | 135 sample_rate, |
134 ppapi::kBitsPerAudioOutputSample, frames_per_buffer); | 136 ppapi::kBitsPerAudioOutputSample, |
| 137 frames_per_buffer); |
135 | 138 |
136 io_message_loop_proxy_->PostTask( | 139 io_message_loop_proxy_->PostTask( |
137 FROM_HERE, | 140 FROM_HERE, |
138 base::Bind(&PepperPlatformAudioOutput::InitializeOnIOThread, this, | 141 base::Bind( |
139 params)); | 142 &PepperPlatformAudioOutput::InitializeOnIOThread, this, params)); |
140 return true; | 143 return true; |
141 } | 144 } |
142 | 145 |
143 void PepperPlatformAudioOutput::InitializeOnIOThread( | 146 void PepperPlatformAudioOutput::InitializeOnIOThread( |
144 const media::AudioParameters& params) { | 147 const media::AudioParameters& params) { |
145 DCHECK(io_message_loop_proxy_->BelongsToCurrentThread()); | 148 DCHECK(io_message_loop_proxy_->BelongsToCurrentThread()); |
146 const int kSessionId = 0; | 149 const int kSessionId = 0; |
147 if (ipc_) | 150 if (ipc_) |
148 ipc_->CreateStream(this, params, kSessionId); | 151 ipc_->CreateStream(this, params, kSessionId); |
149 } | 152 } |
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168 return; | 171 return; |
169 | 172 |
170 ipc_->CloseStream(); | 173 ipc_->CloseStream(); |
171 ipc_.reset(); | 174 ipc_.reset(); |
172 | 175 |
173 Release(); // Release for the delegate, balances out the reference taken in | 176 Release(); // Release for the delegate, balances out the reference taken in |
174 // PepperPlatformAudioOutput::Create. | 177 // PepperPlatformAudioOutput::Create. |
175 } | 178 } |
176 | 179 |
177 } // namespace content | 180 } // namespace content |
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