content/common/gpu/stream_texture_android.h

   1 // Copyright (c) 2013 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_COMMON_GPU_STREAM_TEXTURE_ANDROID_H_
   6 #define CONTENT_COMMON_GPU_STREAM_TEXTURE_ANDROID_H_
   7
   8 #include "base/basictypes.h"
   9 #include "base/memory/weak_ptr.h"
  10 #include "content/common/gpu/gpu_command_buffer_stub.h"
  11 #include "ipc/ipc_listener.h"
  12 #include "ui/gl/android/surface_texture.h"
  13 #include "ui/gl/gl_image.h"
  14
  15 namespace gfx {
  16 class Size;
  17 }
  18
  19 namespace content {
  20
  21 class StreamTexture : public gfx::GLImage,
  22                       public IPC::Listener,
  23                       public GpuCommandBufferStub::DestructionObserver {
  24  public:
  25   static bool Create(GpuCommandBufferStub* owner_stub,
  26                      uint32 client_texture_id,
  27                      int stream_id);
  28
  29  private:
  30   StreamTexture(GpuCommandBufferStub* owner_stub,
  31                 int32 route_id,
  32                 uint32 texture_id);
  33   virtual ~StreamTexture();
  34
  35   // gfx::GLImage implementation:
  36   virtual void Destroy() OVERRIDE;
  37   virtual gfx::Size GetSize() OVERRIDE;
  38   virtual bool BindTexImage(unsigned target) OVERRIDE;
  39   virtual void ReleaseTexImage(unsigned target) OVERRIDE;
  40   virtual void WillUseTexImage() OVERRIDE;
  41   virtual void DidUseTexImage() OVERRIDE {}
  42   virtual void WillModifyTexImage() OVERRIDE {}
  43   virtual void DidModifyTexImage() OVERRIDE {}
  44
  45   // GpuCommandBufferStub::DestructionObserver implementation.
  46   virtual void OnWillDestroyStub() OVERRIDE;
  47
  48   // Called when a new frame is available for the SurfaceTexture.
  49   void OnFrameAvailable();
  50
  51   // IPC::Listener implementation:
  52   virtual bool OnMessageReceived(const IPC::Message& message) OVERRIDE;
  53
  54   // IPC message handlers:
  55   void OnStartListening();
  56   void OnEstablishPeer(int32 primary_id, int32 secondary_id);
  57   void OnSetSize(const gfx::Size& size) { size_ = size; }
  58
  59   scoped_refptr<gfx::SurfaceTexture> surface_texture_;
  60
  61   // Current transform matrix of the surface texture.
  62   float current_matrix_[16];
  63
  64   // Current size of the surface texture.
  65   gfx::Size size_;
  66
  67   // Whether we ever bound a valid frame.
  68   bool has_valid_frame_;
  69
  70   // Whether a new frame is available that we should update to.
  71   bool has_pending_frame_;
  72
  73   GpuCommandBufferStub* owner_stub_;
  74   int32 route_id_;
  75   bool has_listener_;
  76
  77   base::WeakPtrFactory<StreamTexture> weak_factory_;
  78   DISALLOW_COPY_AND_ASSIGN(StreamTexture);
  79 };
  80
  81 }  // namespace content
  82
  83 #endif  // CONTENT_COMMON_GPU_STREAM_TEXTURE_ANDROID_H_