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// Copyright (c) 2012 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 CONTENT_RENDERER_PEPPER_AUDIO_HELPER_H_
#define CONTENT_RENDERER_PEPPER_AUDIO_HELPER_H_
#include "base/basictypes.h"
#include "base/memory/scoped_ptr.h"
#include "base/memory/shared_memory.h"
#include "base/sync_socket.h"
#include "content/renderer/pepper/plugin_delegate.h"
#include "ppapi/c/pp_completion_callback.h"
#include "ppapi/shared_impl/resource.h"
#include "ppapi/shared_impl/scoped_pp_resource.h"
#include "ppapi/shared_impl/tracked_callback.h"
namespace webkit {
namespace ppapi {
class AudioHelper : public PluginDelegate::PlatformAudioOutputClient {
public:
AudioHelper();
virtual ~AudioHelper();
// |PluginDelegate::PlatformAudioOutputClient| implementation.
virtual void StreamCreated(base::SharedMemoryHandle shared_memory_handle,
size_t shared_memory_size_,
base::SyncSocket::Handle socket) OVERRIDE;
void SetCreateCallback(
scoped_refptr< ::ppapi::TrackedCallback> create_callback);
protected:
// TODO(viettrungluu): This is all very poorly thought out. Refactor.
// To be called by implementations of |PPB_Audio_API|/|PPB_AudioInput_API|.
int32_t GetSyncSocketImpl(int* sync_socket);
int32_t GetSharedMemoryImpl(int* shm_handle, uint32_t* shm_size);
// To be implemented by subclasses to call their |SetStreamInfo()|.
virtual void OnSetStreamInfo(base::SharedMemoryHandle shared_memory_handle,
size_t shared_memory_size,
base::SyncSocket::Handle socket_handle) = 0;
private:
scoped_refptr< ::ppapi::TrackedCallback> 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_;
DISALLOW_COPY_AND_ASSIGN(AudioHelper);
};
} // namespace ppapi
} // namespace webkit
#endif // CONTENT_RENDERER_PEPPER_AUDIO_HELPER_H_
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