ppapi/proxy/ppapi_command_buffer_proxy.h

   1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef PPAPI_PROXY_COMMAND_BUFFER_PROXY_H_
   6 #define PPAPI_PROXY_COMMAND_BUFFER_PROXY_H_
   7
   8 #include "base/callback.h"
   9 #include "base/containers/hash_tables.h"
  10 #include "base/memory/scoped_ptr.h"
  11 #include "gpu/command_buffer/client/gpu_control.h"
  12 #include "gpu/command_buffer/common/command_buffer.h"
  13 #include "gpu/command_buffer/common/command_buffer_shared.h"
  14 #include "ppapi/proxy/ppapi_proxy_export.h"
  15 #include "ppapi/shared_impl/host_resource.h"
  16
  17 namespace IPC {
  18 class Message;
  19 }
  20
  21 namespace ppapi {
  22 namespace proxy {
  23
  24 class ProxyChannel;
  25 class SerializedHandle;
  26
  27 class PPAPI_PROXY_EXPORT PpapiCommandBufferProxy : public gpu::CommandBuffer,
  28                                                    public gpu::GpuControl {
  29  public:
  30   PpapiCommandBufferProxy(const HostResource& resource,
  31                           ProxyChannel* channel,
  32                           const gpu::Capabilities& capabilities,
  33                           const SerializedHandle& shared_state);
  34   virtual ~PpapiCommandBufferProxy();
  35
  36   // gpu::CommandBuffer implementation:
  37   virtual bool Initialize() override;
  38   virtual State GetLastState() override;
  39   virtual int32 GetLastToken() override;
  40   virtual void Flush(int32 put_offset) override;
  41   virtual void WaitForTokenInRange(int32 start, int32 end) override;
  42   virtual void WaitForGetOffsetInRange(int32 start, int32 end) override;
  43   virtual void SetGetBuffer(int32 transfer_buffer_id) override;
  44   virtual scoped_refptr<gpu::Buffer> CreateTransferBuffer(size_t size,
  45                                                           int32* id) override;
  46   virtual void DestroyTransferBuffer(int32 id) override;
  47
  48   // gpu::GpuControl implementation:
  49   virtual gpu::Capabilities GetCapabilities() override;
  50   virtual int32 CreateImage(ClientBuffer buffer,
  51                             size_t width,
  52                             size_t height,
  53                             unsigned internalformat) override;
  54   virtual void DestroyImage(int32 id) override;
  55   virtual int32 CreateGpuMemoryBufferImage(size_t width,
  56                                            size_t height,
  57                                            unsigned internalformat,
  58                                            unsigned usage) override;
  59   virtual uint32 InsertSyncPoint() override;
  60   virtual uint32 InsertFutureSyncPoint() override;
  61   virtual void RetireSyncPoint(uint32 sync_point) override;
  62   virtual void SignalSyncPoint(uint32 sync_point,
  63                                const base::Closure& callback) override;
  64   virtual void SignalQuery(uint32 query,
  65                            const base::Closure& callback) override;
  66   virtual void SetSurfaceVisible(bool visible) override;
  67   virtual uint32 CreateStreamTexture(uint32 texture_id) override;
  68
  69  private:
  70   bool Send(IPC::Message* msg);
  71   void UpdateState(const gpu::CommandBuffer::State& state, bool success);
  72
  73   // Try to read an updated copy of the state from shared memory.
  74   void TryUpdateState();
  75
  76   // The shared memory area used to update state.
  77   gpu::CommandBufferSharedState* shared_state() const;
  78
  79   gpu::Capabilities capabilities_;
  80   State last_state_;
  81   scoped_ptr<base::SharedMemory> shared_state_shm_;
  82
  83   HostResource resource_;
  84   ProxyChannel* channel_;
  85
  86   base::Closure channel_error_callback_;
  87
  88   DISALLOW_COPY_AND_ASSIGN(PpapiCommandBufferProxy);
  89 };
  90
  91 }  // namespace proxy
  92 }  // namespace ppapi
  93
  94 #endif // PPAPI_PROXY_COMMAND_BUFFER_PROXY_H_