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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/shared_memory.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 "ppapi/shared_impl/audio_impl.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_;
};
// Some of the backend functionality of this class is implemented by the
// AudioImpl so it can be shared with the proxy.
class Audio : public Resource,
public pp::shared_impl::AudioImpl,
public PluginDelegate::PlatformAudio::Client {
public:
explicit Audio(PluginModule* module, PP_Instance instance_id);
virtual ~Audio();
static const PPB_Audio_Dev* GetInterface();
static const PPB_AudioTrusted_Dev* GetTrustedInterface();
PP_Instance pp_instance() {
return pp_instance_;
}
// PPB_Audio implementation.
bool Init(PluginDelegate* plugin_delegate,
PP_Resource config_id,
PPB_Audio_Callback user_callback, void* user_data);
PP_Resource GetCurrentConfig();
bool StartPlayback();
bool StopPlayback();
// PPB_Audio_Trusted implementation.
int32_t Open(PluginDelegate* plugin_delegate,
PP_Resource config_id,
PP_CompletionCallback create_callback);
int32_t GetSyncSocket(int* sync_socket);
int32_t GetSharedMemory(int* shm_handle, uint32_t* shm_size);
// 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);
// AudioConfig used for creating this Audio object.
scoped_refptr<AudioConfig> config_;
// Plugin instance that owns this audio object.
PP_Instance pp_instance_;
// PluginDelegate audio object that we delegate audio IPC through.
PluginDelegate::PlatformAudio* audio_;
// Is a create callback pending to fire?
bool create_callback_pending_;
// Trusted callback invoked from StreamCreated.
PP_CompletionCallback create_callback_;
// When a create callback is being issued, these will save the info for
// querying from the callback. The proxy uses this to get the handles to the
// other process instead of mapping them in the renderer. These will be
// invalid all other times.
scoped_ptr<base::SharedMemory> shared_memory_for_create_callback_;
size_t shared_memory_size_for_create_callback_;
scoped_ptr<base::SyncSocket> socket_for_create_callback_;
};
} // namespace pepper
#endif // WEBKIT_GLUE_PLUGINS_PEPPER_DEVICE_CONTEXT_AUDIO_H_
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