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// Copyright (c) 2006-2008 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 GPU_GPU_PLUGIN_GPU_PROCESSOR_H_
#define GPU_GPU_PLUGIN_GPU_PROCESSOR_H_
#include "base/ref_counted.h"
#include "base/scoped_ptr.h"
#include "base/shared_memory.h"
#include "gpu/command_buffer/service/cmd_buffer_engine.h"
#include "gpu/command_buffer/service/cmd_parser.h"
#include "gpu/command_buffer/service/gapi_decoder.h"
#include "gpu/gpu_plugin/command_buffer.h"
#include "gpu/np_utils/np_object_pointer.h"
#if defined(CB_SERVICE_D3D9)
#include "gpu/command_buffer/service/gapi_d3d9.h"
#elif defined(CB_SERVICE_GL)
#include "gpu/command_buffer/service/gapi_gl.h"
#else
#error command buffer service not defined
#endif
namespace gpu_plugin {
// This class processes commands in a command buffer. It is event driven and
// posts tasks to the current message loop to do additional work.
class GPUProcessor : public ::base::RefCounted<GPUProcessor>,
public command_buffer::CommandBufferEngine {
public:
#if defined(CB_SERVICE_D3D9)
typedef command_buffer::o3d::GAPID3D9 GPUGAPIInterface;
#elif defined(CB_SERVICE_GL)
typedef command_buffer::o3d::GAPIGL GPUGAPIInterface;
#else
#error command buffer service not defined
#endif
GPUProcessor(NPP npp,
CommandBuffer* command_buffer);
// This constructor is for unit tests.
GPUProcessor(NPP npp,
CommandBuffer* command_buffer,
GPUGAPIInterface* gapi,
command_buffer::o3d::GAPIDecoder* decoder,
command_buffer::CommandParser* parser,
int commands_per_update);
virtual bool Initialize(HWND hwnd);
virtual ~GPUProcessor();
virtual void Destroy();
virtual void ProcessCommands();
#if defined(OS_WIN)
virtual bool SetWindow(HWND handle, int width, int height);
#endif
// Implementation of CommandBufferEngine.
// Gets the base address of a registered shared memory buffer.
// Parameters:
// shm_id: the identifier for the shared memory buffer.
virtual void *GetSharedMemoryAddress(int32 shm_id);
// Gets the size of a registered shared memory buffer.
// Parameters:
// shm_id: the identifier for the shared memory buffer.
virtual size_t GetSharedMemorySize(int32 shm_id);
// Sets the token value.
virtual void set_token(int32 token);
private:
NPP npp_;
// The GPUProcessor holds a weak reference to the CommandBuffer. The
// CommandBuffer owns the GPUProcessor and holds a strong reference to it
// through the ProcessCommands callback.
CommandBuffer* command_buffer_;
scoped_ptr< ::base::SharedMemory> mapped_ring_buffer_;
int commands_per_update_;
scoped_ptr<GPUGAPIInterface> gapi_;
scoped_ptr<command_buffer::o3d::GAPIDecoder> decoder_;
scoped_ptr<command_buffer::CommandParser> parser_;
};
} // namespace gpu_plugin
// Callbacks to the GPUProcessor hold a reference count.
template <typename Method>
class CallbackStorage<gpu_plugin::GPUProcessor, Method> {
public:
CallbackStorage(gpu_plugin::GPUProcessor* obj, Method method)
: obj_(obj),
meth_(method) {
DCHECK(obj_);
obj_->AddRef();
}
~CallbackStorage() {
obj_->Release();
}
protected:
gpu_plugin::GPUProcessor* obj_;
Method meth_;
private:
DISALLOW_COPY_AND_ASSIGN(CallbackStorage);
};
#endif // GPU_GPU_PLUGIN_GPU_PROCESSOR_H_
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