content/renderer/gpu/stream_texture_host_android.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 CONTENT_RENDERER_GPU_STREAM_TEXTURE_HOST_ANDROID_H_
   6 #define CONTENT_RENDERER_GPU_STREAM_TEXTURE_HOST_ANDROID_H_
   7
   8 #include "base/memory/weak_ptr.h"
   9 #include "content/common/android/surface_texture_peer.h"
  10 #include "ipc/ipc_listener.h"
  11 #include "ipc/ipc_message.h"
  12
  13 namespace gfx {
  14 class Size;
  15 }
  16
  17 struct GpuStreamTextureMsg_MatrixChanged_Params;
  18
  19 namespace content {
  20 class GpuChannelHost;
  21
  22 // Class for handling all the IPC messages between the GPU process and
  23 // StreamTextureProxy.
  24 class StreamTextureHost : public IPC::Listener {
  25  public:
  26   explicit StreamTextureHost(GpuChannelHost* channel);
  27   ~StreamTextureHost() override;
  28
  29   // Listener class that is listening to the stream texture updates. It is
  30   // implemented by StreamTextureProxyImpl.
  31   class Listener {
  32    public:
  33     virtual void OnFrameAvailable() = 0;
  34     virtual void OnMatrixChanged(const float mtx[16]) = 0;
  35     virtual ~Listener() {}
  36   };
  37
  38   bool BindToCurrentThread(int32 stream_id, Listener* listener);
  39
  40   // IPC::Channel::Listener implementation:
  41   bool OnMessageReceived(const IPC::Message& message) override;
  42   void OnChannelError() override;
  43
  44  private:
  45   // Message handlers:
  46   void OnFrameAvailable();
  47   void OnMatrixChanged(const GpuStreamTextureMsg_MatrixChanged_Params& param);
  48
  49   int stream_id_;
  50   Listener* listener_;
  51   scoped_refptr<GpuChannelHost> channel_;
  52   base::WeakPtrFactory<StreamTextureHost> weak_ptr_factory_;
  53
  54   DISALLOW_IMPLICIT_CONSTRUCTORS(StreamTextureHost);
  55 };
  56
  57 }  // namespace content
  58
  59 #endif  // CONTENT_RENDERER_GPU_STREAM_TEXTURE_HOST_ANDROID_H_