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   1
   2 #ifndef GPU_IPC_SERVICE_DIRECT_CANVAS_GPU_CHANNEL_H_
   3 #define GPU_IPC_SERVICE_DIRECT_CANVAS_GPU_CHANNEL_H_
   4
   5 #include <memory>
   6
   7 #include "base/memory/shared_memory_handle.h"
   8 #include "base/memory/weak_ptr.h"
   9 #include "base/unguessable_token.h"
  10 #include "ipc/ipc_listener.h"
  11 #include "ipc/ipc_sender.h"
  12
  13 struct GPUCreateCommandBufferConfig;
  14
  15 namespace base {
  16 class SingleThreadTaskRunner;
  17 }
  18
  19 namespace gpu {
  20
  21 struct Capabilities;
  22 class DirectCanvasCommandBufferStub;
  23 class GpuChannel;
  24
  25 class DirectCanvasGpuChannel : public IPC::Listener, public IPC::Sender {
  26  public:
  27   DirectCanvasGpuChannel(gpu::GpuChannel* channel,
  28                          const base::UnguessableToken& channel_token);
  29   ~DirectCanvasGpuChannel() override;
  30
  31   // IPC::Sender implementation:
  32   bool Send(IPC::Message* msg) override;
  33
  34   bool OnControlMessageReceived(const IPC::Message& msg);
  35
  36   bool RouteMessage(const IPC::Message& msg);
  37
  38   void SwapBuffers(int32_t route_id);
  39
  40  private:
  41   // IPC::Listener implementation:
  42   bool OnMessageReceived(const IPC::Message& message) override;
  43
  44   void OnCreateCommandBuffer(const GPUCreateCommandBufferConfig& init_params,
  45                              int32_t route_id,
  46                              base::SharedMemoryHandle shared_state_shm,
  47                              bool* result,
  48                              gpu::Capabilities* capabilities);
  49
  50   bool CreateCommandBuffer(const GPUCreateCommandBufferConfig& init_params,
  51                            int32_t route_id,
  52                            base::SharedMemoryHandle shared_state_shm,
  53                            gpu::Capabilities* capabilities);
  54
  55   void OnDestroyCommandBuffer(int32_t route_id);
  56
  57   void DestroyCommandBuffer(int32_t route_id);
  58
  59   DirectCanvasCommandBufferStub* LookupCommandBuffer(int32_t route_id);
  60
  61   gpu::GpuChannel* const channel_;
  62   base::UnguessableToken channel_token_;
  63   scoped_refptr<base::SingleThreadTaskRunner> task_runner_;
  64   scoped_refptr<base::SingleThreadTaskRunner> gpu_task_runner_;
  65
  66   std::unordered_map<int32_t, scoped_refptr<DirectCanvasCommandBufferStub>> stubs_;
  67
  68   base::WeakPtrFactory<DirectCanvasGpuChannel> weak_factory_;
  69   DISALLOW_COPY_AND_ASSIGN(DirectCanvasGpuChannel);
  70 };
  71
  72 }  // namespace gpu
  73
  74 #endif  // GPU_IPC_SERVICE_DIRECT_CANVAS_GPU_CHANNEL_H_