Home | History | Annotate | Download | only in gpu 
      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_
     84