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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 WEBKIT_PLUGINS_PPAPI_PPB_AUDIO_IMPL_H_
#define WEBKIT_PLUGINS_PPAPI_PPB_AUDIO_IMPL_H_
#include "base/basictypes.h"
#include "base/memory/ref_counted.h"
#include "base/shared_memory.h"
#include "base/sync_socket.h"
#include "ppapi/c/pp_completion_callback.h"
#include "ppapi/c/ppb_audio.h"
#include "ppapi/c/ppb_audio_config.h"
#include "ppapi/c/trusted/ppb_audio_trusted.h"
#include "ppapi/shared_impl/ppb_audio_config_shared.h"
#include "ppapi/shared_impl/ppb_audio_shared.h"
#include "ppapi/shared_impl/resource.h"
#include "ppapi/shared_impl/scoped_pp_resource.h"
#include "webkit/plugins/ppapi/audio_helper.h"
#include "webkit/plugins/ppapi/plugin_delegate.h"
#include "webkit/plugins/ppapi/ppapi_plugin_instance.h"
namespace webkit {
namespace ppapi {
// Some of the backend functionality of this class is implemented by the
// PPB_Audio_Shared so it can be shared with the proxy.
class PPB_Audio_Impl : public ::ppapi::Resource,
public ::ppapi::PPB_Audio_Shared,
public AudioHelper {
public:
// Trusted initialization. You must call Init after this.
//
// Untrusted initialization should just call the static Create() function
// to properly create & initialize this class.
explicit PPB_Audio_Impl(PP_Instance instance);
virtual ~PPB_Audio_Impl();
// Creation function for untrusted plugins. This handles all initialization
// and will return 0 on failure.
static PP_Resource Create(PP_Instance instance,
PP_Resource config_id,
PPB_Audio_Callback audio_callback,
void* user_data);
// Initialization function for trusted init.
bool Init(PP_Resource config_id,
PPB_Audio_Callback user_callback,
void* user_data);
// Resource overrides.
virtual ::ppapi::thunk::PPB_Audio_API* AsPPB_Audio_API();
// PPB_Audio_API implementation.
virtual PP_Resource GetCurrentConfig() OVERRIDE;
virtual PP_Bool StartPlayback() OVERRIDE;
virtual PP_Bool StopPlayback() OVERRIDE;
virtual int32_t Open(
PP_Resource config_id,
scoped_refptr< ::ppapi::TrackedCallback> create_callback) OVERRIDE;
virtual int32_t GetSyncSocket(int* sync_socket) OVERRIDE;
virtual int32_t GetSharedMemory(int* shm_handle, uint32_t* shm_size) OVERRIDE;
private:
// AudioHelper implementation.
virtual void OnSetStreamInfo(base::SharedMemoryHandle shared_memory_handle,
size_t shared_memory_size_,
base::SyncSocket::Handle socket);
// AudioConfig used for creating this Audio object. We own a ref.
::ppapi::ScopedPPResource config_;
// PluginDelegate audio object that we delegate audio IPC through. We don't
// own this pointer but are responsible for calling Shutdown on it.
PluginDelegate::PlatformAudioOutput* audio_;
// Track frame count for passing on to PPB_Audio_Shared::SetStreamInfo().
int sample_frame_count_;
DISALLOW_COPY_AND_ASSIGN(PPB_Audio_Impl);
};
} // namespace ppapi
} // namespace webkit
#endif // WEBKIT_PLUGINS_PPAPI_PPB_AUDIO_IMPL_H_
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