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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 PPAPI_PROXY_COMMAND_BUFFER_PROXY_H_
#define PPAPI_PROXY_COMMAND_BUFFER_PROXY_H_
#include <stddef.h>
#include <stdint.h>
#include <memory>
#include "base/callback.h"
#include "base/containers/hash_tables.h"
#include "base/macros.h"
#include "gpu/command_buffer/client/gpu_control.h"
#include "gpu/command_buffer/common/command_buffer.h"
#include "gpu/command_buffer/common/command_buffer_id.h"
#include "gpu/command_buffer/common/command_buffer_shared.h"
#include "ppapi/proxy/plugin_dispatcher.h"
#include "ppapi/proxy/ppapi_proxy_export.h"
#include "ppapi/shared_impl/host_resource.h"
namespace IPC {
class Message;
}
namespace ppapi {
namespace proxy {
class SerializedHandle;
class PPAPI_PROXY_EXPORT PpapiCommandBufferProxy : public gpu::CommandBuffer,
public gpu::GpuControl {
public:
PpapiCommandBufferProxy(const HostResource& resource,
PluginDispatcher* dispatcher,
const gpu::Capabilities& capabilities,
const SerializedHandle& shared_state,
gpu::CommandBufferId command_buffer_id);
~PpapiCommandBufferProxy() override;
// gpu::CommandBuffer implementation:
State GetLastState() override;
void Flush(int32_t put_offset) override;
void OrderingBarrier(int32_t put_offset) override;
State WaitForTokenInRange(int32_t start, int32_t end) override;
State WaitForGetOffsetInRange(int32_t start, int32_t end) override;
void SetGetBuffer(int32_t transfer_buffer_id) override;
scoped_refptr<gpu::Buffer> CreateTransferBuffer(size_t size,
int32_t* id) override;
void DestroyTransferBuffer(int32_t id) override;
// gpu::GpuControl implementation:
void SetGpuControlClient(gpu::GpuControlClient*) override;
gpu::Capabilities GetCapabilities() override;
int32_t CreateImage(ClientBuffer buffer,
size_t width,
size_t height,
unsigned internalformat) override;
void DestroyImage(int32_t id) override;
int32_t CreateGpuMemoryBufferImage(size_t width,
size_t height,
unsigned internalformat,
unsigned usage) override;
void SignalQuery(uint32_t query, const base::Closure& callback) override;
void SetLock(base::Lock*) override;
void EnsureWorkVisible() override;
gpu::CommandBufferNamespace GetNamespaceID() const override;
gpu::CommandBufferId GetCommandBufferID() const override;
uint64_t GenerateFenceSyncRelease() override;
bool IsFenceSyncRelease(uint64_t release) override;
bool IsFenceSyncFlushed(uint64_t release) override;
bool IsFenceSyncFlushReceived(uint64_t release) override;
bool IsFenceSyncReleased(uint64_t release) override;
void SignalSyncToken(const gpu::SyncToken& sync_token,
const base::Closure& callback) override;
bool CanWaitUnverifiedSyncToken(const gpu::SyncToken* sync_token) override;
int32_t GetExtraCommandBufferData() const override;
private:
bool Send(IPC::Message* msg);
void UpdateState(const gpu::CommandBuffer::State& state, bool success);
// Try to read an updated copy of the state from shared memory.
void TryUpdateState();
// The shared memory area used to update state.
gpu::CommandBufferSharedState* shared_state() const;
void FlushInternal();
const gpu::CommandBufferId command_buffer_id_;
gpu::Capabilities capabilities_;
State last_state_;
std::unique_ptr<base::SharedMemory> shared_state_shm_;
HostResource resource_;
PluginDispatcher* dispatcher_;
base::Closure channel_error_callback_;
InstanceData::FlushInfo *flush_info_;
uint64_t next_fence_sync_release_;
uint64_t pending_fence_sync_release_;
uint64_t flushed_fence_sync_release_;
uint64_t validated_fence_sync_release_;
DISALLOW_COPY_AND_ASSIGN(PpapiCommandBufferProxy);
};
} // namespace proxy
} // namespace ppapi
#endif // PPAPI_PROXY_COMMAND_BUFFER_PROXY_H_
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