diff options
Diffstat (limited to 'content/renderer/render_audiosourceprovider.cc')
-rw-r--r-- | content/renderer/render_audiosourceprovider.cc | 148 |
1 files changed, 0 insertions, 148 deletions
diff --git a/content/renderer/render_audiosourceprovider.cc b/content/renderer/render_audiosourceprovider.cc deleted file mode 100644 index 6f070d5..0000000 --- a/content/renderer/render_audiosourceprovider.cc +++ /dev/null @@ -1,148 +0,0 @@ -// Copyright (c) 2011 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/render_audiosourceprovider.h" - -#include "base/basictypes.h" -#include "base/logging.h" -#include "third_party/WebKit/Source/WebKit/chromium/public/WebAudioSourceProviderClient.h" - -using std::vector; -using WebKit::WebVector; - -RenderAudioSourceProvider::RenderAudioSourceProvider() - : is_initialized_(false), - channels_(0), - sample_rate_(0.0), - is_running_(false), - volume_(1.0), - renderer_(NULL), - client_(NULL) { - // We create the AudioDevice here because it must be created in the - // main thread. But we don't yet know the audio format (sample-rate, etc.) - // at this point. Later, when Initialize() is called, we have - // the audio format information and call the AudioDevice::Initialize() - // method to fully initialize it. - default_sink_ = new AudioDevice(); -} - -RenderAudioSourceProvider::~RenderAudioSourceProvider() {} - -void RenderAudioSourceProvider::Start() { - base::AutoLock auto_lock(sink_lock_); - if (!client_) - default_sink_->Start(); - is_running_ = true; -} - -void RenderAudioSourceProvider::Stop() { - base::AutoLock auto_lock(sink_lock_); - if (!client_) - default_sink_->Stop(); - is_running_ = false; -} - -void RenderAudioSourceProvider::Play() { - base::AutoLock auto_lock(sink_lock_); - if (!client_) - default_sink_->Play(); - is_running_ = true; -} - -void RenderAudioSourceProvider::Pause(bool flush) { - base::AutoLock auto_lock(sink_lock_); - if (!client_) - default_sink_->Pause(flush); - is_running_ = false; -} - -bool RenderAudioSourceProvider::SetVolume(double volume) { - base::AutoLock auto_lock(sink_lock_); - if (!client_) - default_sink_->SetVolume(volume); - volume_ = volume; - return true; -} - -void RenderAudioSourceProvider::GetVolume(double* volume) { - if (!client_) - default_sink_->GetVolume(volume); - else if (volume) - *volume = volume_; -} - -void RenderAudioSourceProvider::Initialize( - size_t buffer_size, - int channels, - double sample_rate, - AudioParameters::Format latency_format, - RenderCallback* renderer) { - base::AutoLock auto_lock(sink_lock_); - CHECK(!is_initialized_); - renderer_ = renderer; - - default_sink_->Initialize(buffer_size, - channels, - sample_rate, - latency_format, - renderer); - - if (client_) { - // Inform WebKit about the audio stream format. - client_->setFormat(channels, sample_rate); - } - - // Keep track of the format in case the client hasn't yet been set. - channels_ = channels; - sample_rate_ = sample_rate; - is_initialized_ = true; -} - -void RenderAudioSourceProvider::setClient( - WebKit::WebAudioSourceProviderClient* client) { - // Synchronize with other uses of client_ and default_sink_. - base::AutoLock auto_lock(sink_lock_); - - if (client && client != client_) { - // Detach the audio renderer from normal playback. - default_sink_->Pause(true); - - // The client will now take control by calling provideInput() periodically. - client_ = client; - - if (is_initialized_) { - // The client needs to be notified of the audio format, if available. - // If the format is not yet available, we'll be notified later - // when Initialize() is called. - - // Inform WebKit about the audio stream format. - client->setFormat(channels_, sample_rate_); - } - } else if (!client && client_) { - // Restore normal playback. - client_ = NULL; - // TODO(crogers): We should call default_sink_->Play() if we're - // in the playing state. - } -} - -void RenderAudioSourceProvider::provideInput( - const WebVector<float*>& audio_data, size_t number_of_frames) { - DCHECK(client_); - - if (renderer_ && is_initialized_ && is_running_) { - // Wrap WebVector as std::vector. - vector<float*> v(audio_data.size()); - for (size_t i = 0; i < audio_data.size(); ++i) - v[i] = audio_data[i]; - - // TODO(crogers): figure out if we should volume scale here or in common - // WebAudio code. In any case we need to take care of volume. - renderer_->Render(v, number_of_frames, 0); - } else { - // Provide silence if the source is not running. - for (size_t i = 0; i < audio_data.size(); ++i) - memset(audio_data[i], 0, sizeof(float) * number_of_frames); - } -} |