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// Copyright (c) 2010 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.
#ifndef WEBKIT_GLUE_PLUGINS_PEPPER_DEVICE_CONTEXT_AUDIO_H_
#define WEBKIT_GLUE_PLUGINS_PEPPER_DEVICE_CONTEXT_AUDIO_H_
#include "base/ref_counted.h"
#include "base/scoped_ptr.h"
#include "base/shared_memory.h"
#include "base/simple_thread.h"
#include "base/sync_socket.h"
#include "ppapi/c/dev/ppb_audio_dev.h"
#include "ppapi/c/dev/ppb_audio_config_dev.h"
#include "ppapi/c/dev/ppb_audio_trusted_dev.h"
#include "ppapi/c/pp_completion_callback.h"
#include "webkit/glue/plugins/pepper_plugin_delegate.h"
#include "webkit/glue/plugins/pepper_plugin_instance.h"
#include "webkit/glue/plugins/pepper_plugin_module.h"
#include "webkit/glue/plugins/pepper_resource.h"
namespace pepper {
class PluginInstance;
class PluginModule;
class AudioConfig : public Resource {
public:
AudioConfig(PluginModule* module,
PP_AudioSampleRate_Dev sample_rate,
uint32_t sample_frame_count);
size_t BufferSize();
static const PPB_AudioConfig_Dev* GetInterface();
PP_AudioSampleRate_Dev sample_rate() { return sample_rate_; }
uint32_t sample_frame_count() { return sample_frame_count_; }
private:
// Resource override.
virtual AudioConfig* AsAudioConfig();
PP_AudioSampleRate_Dev sample_rate_;
uint32_t sample_frame_count_;
};
class Audio : public Resource,
public PluginDelegate::PlatformAudio::Client,
public base::DelegateSimpleThread::Delegate {
public:
explicit Audio(PluginModule* module, PP_Instance instance_id);
virtual ~Audio();
static const PPB_Audio_Dev* GetInterface();
static const PPB_AudioTrusted_Dev* GetTrustedInterface();
bool Init(PluginDelegate* plugin_delegate,
PP_Resource config_id,
PPB_Audio_Callback user_callback, void* user_data);
int32_t Open(PluginDelegate* plugin_delegate,
PP_Resource config_id,
PP_CompletionCallback create_callback);
PP_Resource GetCurrentConfiguration() {
return config_->GetReference();
}
PP_Instance pp_instance() {
return pp_instance_;
}
int32_t GetSyncSocket(int* sync_socket);
int32_t GetSharedMemory(int* shm_handle, uint32_t* shm_size);
bool StartPlayback();
bool StopPlayback();
// Resource override.
virtual Audio* AsAudio();
private:
// pepper::PluginDelegate::PlatformAudio::Client implementation.
virtual void StreamCreated(base::SharedMemoryHandle shared_memory_handle,
size_t shared_memory_size_,
base::SyncSocket::Handle socket);
// End of pepper::PluginDelegate::PlatformAudio::Client implementation.
// Audio thread. DelegateSimpleThread::Delegate implementation.
virtual void Run();
// End of DelegateSimpleThread::Delegate implementation.
// True if playing the stream.
bool playing_;
// AudioConfig used for creating this Audio object.
scoped_refptr<AudioConfig> config_;
// Instance id
PP_Instance pp_instance_;
// PluginDelegate audio object that we delegate audio IPC through.
PluginDelegate::PlatformAudio* audio_;
// Socket used to notify us when audio is ready to accept new samples. This
// pointer is created in StreamCreated().
scoped_ptr<base::SyncSocket> socket_;
// Sample buffer in shared memory. This pointer is created in
// StreamCreated(). The memory is only mapped when the audio thread is
// created.
scoped_ptr<base::SharedMemory> shared_memory_;
// The size of the sample buffer in bytes.
size_t shared_memory_size_;
// When the callback is set, this thread is spawned for calling it.
scoped_ptr<base::DelegateSimpleThread> audio_thread_;
// Callback to call when audio is ready to accept new samples.
volatile PPB_Audio_Callback callback_;
// User data pointer passed verbatim to the callback function.
void* user_data_;
// Is a create callback pending to fire?
bool create_callback_pending_;
// Trusted callback invoked from StreamCreated.
PP_CompletionCallback create_callback_;
};
} // namespace pepper
#endif // WEBKIT_GLUE_PLUGINS_PEPPER_DEVICE_CONTEXT_AUDIO_H_
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