Index: content/renderer/pepper/pepper_platform_audio_output_dev.cc |
diff --git a/content/renderer/pepper/pepper_platform_audio_output_dev.cc b/content/renderer/pepper/pepper_platform_audio_output_dev.cc |
new file mode 100644 |
index 0000000000000000000000000000000000000000..63bb2e4aca07d05f5014c6e06ea3fb6fb2fd08c1 |
--- /dev/null |
+++ b/content/renderer/pepper/pepper_platform_audio_output_dev.cc |
@@ -0,0 +1,407 @@ |
+// Copyright (c) 2017 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 "content/renderer/pepper/pepper_platform_audio_output_dev.h" |
+ |
+#include "base/bind.h" |
+#include "base/location.h" |
+#include "base/logging.h" |
+#include "base/single_thread_task_runner.h" |
+#include "base/threading/thread_task_runner_handle.h" |
+#include "base/time/time.h" |
+#include "base/timer/timer.h" |
+#include "build/build_config.h" |
+#include "content/child/child_process.h" |
+#include "content/common/content_constants_internal.h" |
+#include "content/common/media/audio_messages.h" |
+#include "content/renderer/media/audio_message_filter.h" |
+#include "content/renderer/pepper/audio_helper.h" |
+#include "content/renderer/pepper/pepper_audio_output_host.h" |
+#include "content/renderer/pepper/pepper_media_device_manager.h" |
+#include "content/renderer/render_frame_impl.h" |
+#include "content/renderer/render_thread_impl.h" |
+#include "media/audio/audio_device_description.h" |
+#include "ppapi/shared_impl/ppb_audio_config_shared.h" |
+ |
+namespace content { |
+ |
+// static |
+PepperPlatformAudioOutputDev* PepperPlatformAudioOutputDev::Create( |
+ int render_frame_id, |
+ const std::string& device_id, |
+ const GURL& document_url, |
+ int sample_rate, |
+ int frames_per_buffer, |
+ PepperAudioOutputHost* client) { |
+ scoped_refptr<PepperPlatformAudioOutputDev> audio_output( |
+ new PepperPlatformAudioOutputDev( |
+ render_frame_id, device_id, document_url, |
+ // Set authorization request timeout at 80% of renderer hung timeout, |
+ // but no more than kMaxAuthorizationTimeout. |
+ base::TimeDelta::FromMilliseconds(std::min( |
+ kHungRendererDelayMs * 8 / 10, kMaxAuthorizationTimeoutMs)))); |
+ |
+ if (audio_output->Initialize(sample_rate, frames_per_buffer, client)) { |
+ // Balanced by Release invoked in |
+ // PepperPlatformAudioOutputDev::ShutDownOnIOThread(). |
+ audio_output->AddRef(); |
+ return audio_output.get(); |
+ } |
+ return NULL; |
+} |
+ |
+void PepperPlatformAudioOutputDev::RequestDeviceAuthorization() { |
+ if (ipc_) { |
+ io_task_runner_->PostTask( |
+ FROM_HERE, |
+ base::Bind( |
+ &PepperPlatformAudioOutputDev::RequestDeviceAuthorizationOnIOThread, |
+ this)); |
+ } |
+} |
+ |
+bool PepperPlatformAudioOutputDev::StartPlayback() { |
+ if (ipc_) { |
+ io_task_runner_->PostTask( |
+ FROM_HERE, |
+ base::Bind(&PepperPlatformAudioOutputDev::StartPlaybackOnIOThread, |
+ this)); |
+ return true; |
+ } |
+ return false; |
+} |
+ |
+bool PepperPlatformAudioOutputDev::StopPlayback() { |
+ if (ipc_) { |
+ io_task_runner_->PostTask( |
+ FROM_HERE, |
+ base::Bind(&PepperPlatformAudioOutputDev::StopPlaybackOnIOThread, |
+ this)); |
+ return true; |
+ } |
+ return false; |
+} |
+ |
+bool PepperPlatformAudioOutputDev::SetVolume(double volume) { |
+ if (ipc_) { |
+ io_task_runner_->PostTask( |
+ FROM_HERE, |
+ base::Bind(&PepperPlatformAudioOutputDev::SetVolumeOnIOThread, this, |
+ volume)); |
+ return true; |
+ } |
+ return false; |
+} |
+ |
+void PepperPlatformAudioOutputDev::ShutDown() { |
+ // Called on the main thread to stop all audio callbacks. We must only change |
+ // the client on the main thread, and the delegates from the I/O thread. |
+ client_ = NULL; |
+ io_task_runner_->PostTask( |
+ FROM_HERE, |
+ base::Bind(&PepperPlatformAudioOutputDev::ShutDownOnIOThread, this)); |
+} |
+ |
+void PepperPlatformAudioOutputDev::OnError() { |
+ DCHECK(io_task_runner_->BelongsToCurrentThread()); |
+ |
+ // Do nothing if the stream has been closed. |
+ if (state_ < CREATING_STREAM) |
+ return; |
+ |
+ DLOG(WARNING) << "PepperPlatformAudioOutputDev::OnError()"; |
+} |
+ |
+void PepperPlatformAudioOutputDev::OnDeviceAuthorized( |
+ media::OutputDeviceStatus device_status, |
+ const media::AudioParameters& output_params, |
+ const std::string& matched_device_id) { |
+ DCHECK(io_task_runner_->BelongsToCurrentThread()); |
+ |
+ auth_timeout_action_.reset(); |
+ |
+ // Do nothing if late authorization is received after timeout. |
+ if (state_ == IPC_CLOSED) |
+ return; |
+ |
+ LOG_IF(WARNING, device_status == media::OUTPUT_DEVICE_STATUS_ERROR_TIMED_OUT) |
+ << "Output device authorization timed out"; |
+ |
+ DCHECK_EQ(state_, AUTHORIZING); |
+ |
+ // It may happen that a second authorization is received as a result to a |
+ // call to StartPlayback() after Shutdown(). If the status for the second |
+ // authorization differs from the first, it will not be reflected in |
+ // |device_status_| to avoid a race. |
+ // This scenario is unlikely. If it occurs, the new value will be |
+ // different from OUTPUT_DEVICE_STATUS_OK, so the PepperPlatformAudioOutputDev |
+ // will enter the IPC_CLOSED state anyway, which is the safe thing to do. |
+ // This is preferable to holding a lock. |
+ if (!did_receive_auth_.IsSignaled()) |
+ device_status_ = device_status; |
+ |
+ if (device_status == media::OUTPUT_DEVICE_STATUS_OK) { |
+ state_ = AUTHORIZED; |
+ if (!did_receive_auth_.IsSignaled()) { |
+ output_params_ = output_params; |
+ |
+ // It's possible to not have a matched device obtained via session id. It |
+ // means matching output device through |session_id_| failed and the |
+ // default device is used. |
+ DCHECK(media::AudioDeviceDescription::UseSessionIdToSelectDevice( |
+ session_id_, device_id_) || |
+ matched_device_id_.empty()); |
+ matched_device_id_ = matched_device_id; |
+ |
+ DVLOG(1) << "PepperPlatformAudioOutputDev authorized, session_id: " |
+ << session_id_ << ", device_id: " << device_id_ |
+ << ", matched_device_id: " << matched_device_id_; |
+ |
+ did_receive_auth_.Signal(); |
+ } |
+ if (start_on_authorized_) |
+ CreateStreamOnIOThread(params_); |
+ } else { |
+ // Closing IPC forces a Signal(), so no clients are locked waiting |
+ // indefinitely after this method returns. |
+ ipc_->CloseStream(); |
+ OnIPCClosed(); |
+ main_task_runner_->PostTask( |
+ FROM_HERE, |
+ base::Bind(&PepperPlatformAudioOutputDev::NotifyStreamCreationFailed, |
+ this)); |
+ } |
+} |
+ |
+void PepperPlatformAudioOutputDev::OnStreamCreated( |
+ base::SharedMemoryHandle handle, |
+ base::SyncSocket::Handle socket_handle, |
+ int length) { |
+#if defined(OS_WIN) |
+ DCHECK(handle.IsValid()); |
+ DCHECK(socket_handle); |
+#else |
+ DCHECK(base::SharedMemory::IsHandleValid(handle)); |
+ DCHECK_NE(-1, socket_handle); |
+#endif |
+ DCHECK(length); |
+ |
+ if (base::ThreadTaskRunnerHandle::Get().get() == main_task_runner_.get()) { |
+ // Must dereference the client only on the main thread. Shutdown may have |
+ // occurred while the request was in-flight, so we need to NULL check. |
+ if (client_) |
+ client_->StreamCreated(handle, length, socket_handle); |
+ } else { |
+ DCHECK(io_task_runner_->BelongsToCurrentThread()); |
+ if (state_ != CREATING_STREAM) |
+ return; |
+ |
+ state_ = PAUSED; |
+ if (play_on_start_) |
+ StartPlaybackOnIOThread(); |
+ |
+ main_task_runner_->PostTask( |
+ FROM_HERE, base::Bind(&PepperPlatformAudioOutputDev::OnStreamCreated, |
+ this, handle, socket_handle, length)); |
+ } |
+} |
+ |
+void PepperPlatformAudioOutputDev::OnIPCClosed() { |
+ DCHECK(io_task_runner_->BelongsToCurrentThread()); |
+ state_ = IPC_CLOSED; |
+ ipc_.reset(); |
+ |
+ // Signal to unblock any blocked threads waiting for parameters |
+ did_receive_auth_.Signal(); |
+} |
+ |
+PepperPlatformAudioOutputDev::~PepperPlatformAudioOutputDev() { |
+ // Make sure we have been shut down. Warning: this will usually happen on |
+ // the I/O thread! |
+ DCHECK(!ipc_); |
+ DCHECK(!client_); |
+} |
+ |
+PepperPlatformAudioOutputDev::PepperPlatformAudioOutputDev( |
+ int render_frame_id, |
+ const std::string& device_id, |
+ const GURL& document_url, |
+ base::TimeDelta authorization_timeout) |
+ : client_(NULL), |
+ main_task_runner_(base::ThreadTaskRunnerHandle::Get()), |
+ io_task_runner_(ChildProcess::current()->io_task_runner()), |
+ render_frame_id_(render_frame_id), |
+ state_(IDLE), |
+ start_on_authorized_(true), |
+ play_on_start_(false), |
+ session_id_(0), |
+ device_id_(device_id), |
+ security_origin_(document_url), |
+ did_receive_auth_(base::WaitableEvent::ResetPolicy::MANUAL, |
+ base::WaitableEvent::InitialState::NOT_SIGNALED), |
+ device_status_(media::OUTPUT_DEVICE_STATUS_ERROR_INTERNAL), |
+ auth_timeout_(authorization_timeout) {} |
+ |
+bool PepperPlatformAudioOutputDev::Initialize(int sample_rate, |
+ int frames_per_buffer, |
+ PepperAudioOutputHost* client) { |
+ DCHECK(main_task_runner_->BelongsToCurrentThread()); |
+ |
+ RenderFrameImpl* const render_frame = |
+ RenderFrameImpl::FromRoutingID(render_frame_id_); |
+ if (!render_frame || !client) |
+ return false; |
+ |
+ client_ = client; |
+ |
+ RenderThreadImpl* const render_thread = RenderThreadImpl::current(); |
+ ipc_ = render_thread->audio_message_filter()->CreateAudioOutputIPC( |
+ render_frame_id_); |
+ CHECK(ipc_); |
+ |
+ params_.Reset(media::AudioParameters::AUDIO_PCM_LOW_LATENCY, |
+ media::CHANNEL_LAYOUT_STEREO, sample_rate, |
+ ppapi::kBitsPerAudioOutputSample, frames_per_buffer); |
+ |
+ io_task_runner_->PostTask( |
+ FROM_HERE, |
+ base::Bind(&PepperPlatformAudioOutputDev::CreateStreamOnIOThread, this, |
+ params_)); |
+ |
+ return true; |
+} |
+ |
+void PepperPlatformAudioOutputDev::RequestDeviceAuthorizationOnIOThread() { |
+ DCHECK(io_task_runner_->BelongsToCurrentThread()); |
+ DCHECK_EQ(state_, IDLE); |
+ |
+ if (!ipc_) |
+ return; |
+ |
+ state_ = AUTHORIZING; |
+ ipc_->RequestDeviceAuthorization(this, session_id_, device_id_, |
+ security_origin_); |
+ |
+ if (auth_timeout_ > base::TimeDelta()) { |
+ // Create the timer on the thread it's used on. It's guaranteed to be |
+ // deleted on the same thread since users must call ShutDown() before |
+ // deleting PepperPlatformAudioOutputDev; see ShutDownOnIOThread(). |
+ auth_timeout_action_.reset(new base::OneShotTimer()); |
+ auth_timeout_action_->Start( |
+ FROM_HERE, auth_timeout_, |
+ base::Bind(&PepperPlatformAudioOutputDev::OnDeviceAuthorized, this, |
+ media::OUTPUT_DEVICE_STATUS_ERROR_TIMED_OUT, |
+ media::AudioParameters(), std::string())); |
+ } |
+} |
+ |
+void PepperPlatformAudioOutputDev::CreateStreamOnIOThread( |
+ const media::AudioParameters& params) { |
+ DCHECK(io_task_runner_->BelongsToCurrentThread()); |
+ switch (state_) { |
+ case IPC_CLOSED: |
+ main_task_runner_->PostTask( |
+ FROM_HERE, |
+ base::Bind(&PepperPlatformAudioOutputDev::NotifyStreamCreationFailed, |
+ this)); |
+ break; |
+ |
+ case IDLE: |
+ if (did_receive_auth_.IsSignaled() && device_id_.empty() && |
+ security_origin_.unique()) { |
+ state_ = CREATING_STREAM; |
+ ipc_->CreateStream(this, params); |
+ } else { |
+ RequestDeviceAuthorizationOnIOThread(); |
+ start_on_authorized_ = true; |
+ } |
+ break; |
+ |
+ case AUTHORIZING: |
+ start_on_authorized_ = true; |
+ break; |
+ |
+ case AUTHORIZED: |
+ state_ = CREATING_STREAM; |
+ ipc_->CreateStream(this, params); |
+ start_on_authorized_ = false; |
+ break; |
+ |
+ case CREATING_STREAM: |
+ case PAUSED: |
+ case PLAYING: |
+ NOTREACHED(); |
+ break; |
+ } |
+} |
+ |
+void PepperPlatformAudioOutputDev::StartPlaybackOnIOThread() { |
+ DCHECK(io_task_runner_->BelongsToCurrentThread()); |
+ if (!ipc_) |
+ return; |
+ |
+ if (state_ == PAUSED) { |
+ ipc_->PlayStream(); |
+ state_ = PLAYING; |
+ play_on_start_ = false; |
+ } else { |
+ if (state_ < CREATING_STREAM) |
+ CreateStreamOnIOThread(params_); |
+ |
+ play_on_start_ = true; |
+ } |
+} |
+ |
+void PepperPlatformAudioOutputDev::StopPlaybackOnIOThread() { |
+ DCHECK(io_task_runner_->BelongsToCurrentThread()); |
+ if (!ipc_) |
+ return; |
+ |
+ if (state_ == PLAYING) { |
+ ipc_->PauseStream(); |
+ state_ = PAUSED; |
+ } |
+ play_on_start_ = false; |
+} |
+ |
+void PepperPlatformAudioOutputDev::SetVolumeOnIOThread(double volume) { |
+ DCHECK(io_task_runner_->BelongsToCurrentThread()); |
+ if (!ipc_) |
+ return; |
+ |
+ if (state_ >= CREATING_STREAM) |
+ ipc_->SetVolume(volume); |
+} |
+ |
+void PepperPlatformAudioOutputDev::ShutDownOnIOThread() { |
+ DCHECK(io_task_runner_->BelongsToCurrentThread()); |
+ |
+ // Make sure we don't call shutdown more than once. |
+ if (!ipc_) |
+ return; |
+ |
+ // Close the stream, if we haven't already. |
+ if (state_ >= AUTHORIZING) { |
+ ipc_->CloseStream(); |
+ ipc_.reset(); |
+ state_ = IDLE; |
+ } |
+ start_on_authorized_ = false; |
+ |
+ // Destoy the timer on the thread it's used on. |
+ auth_timeout_action_.reset(); |
+ |
+ // Release for the delegate, balances out the reference taken in |
+ // PepperPlatformAudioOutputDev::Create. |
+ Release(); |
+} |
+ |
+void PepperPlatformAudioOutputDev::NotifyStreamCreationFailed() { |
+ DCHECK(main_task_runner_->BelongsToCurrentThread()); |
+ |
+ if (client_) |
+ client_->StreamCreationFailed(); |
+} |
+ |
+} // namespace content |