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   ~StreamTexture() override;
  34
  35   // gfx::GLImage implementation:
  36   void Destroy(bool have_context) override;
  37   gfx::Size GetSize() override;
  38   bool BindTexImage(unsigned target) override;
  39   void ReleaseTexImage(unsigned target) override;
  40   bool CopyTexImage(unsigned target) override;
  41   void WillUseTexImage() override;
  42   void DidUseTexImage() override {}
  43   void WillModifyTexImage() override {}
  44   void DidModifyTexImage() override {}
  45   bool ScheduleOverlayPlane(gfx::AcceleratedWidget widget,
  46                             int z_order,
  47                             gfx::OverlayTransform transform,
  48                             const gfx::Rect& bounds_rect,
  49                             const gfx::RectF& crop_rect) override;
  50
  51   // GpuCommandBufferStub::DestructionObserver implementation.
  52   void OnWillDestroyStub() override;
  53
  54   // Called when a new frame is available for the SurfaceTexture.
  55   void OnFrameAvailable();
  56
  57   // IPC::Listener implementation:
  58   bool OnMessageReceived(const IPC::Message& message) override;
  59
  60   // IPC message handlers:
  61   void OnStartListening();
  62   void OnEstablishPeer(int32 primary_id, int32 secondary_id);
  63   void OnSetSize(const gfx::Size& size) { size_ = size; }
  64
  65   scoped_refptr<gfx::SurfaceTexture> surface_texture_;
  66
  67   // Current transform matrix of the surface texture.
  68   float current_matrix_[16];
  69
  70   // Current size of the surface texture.
  71   gfx::Size size_;
  72
  73   // Whether we ever bound a valid frame.
  74   bool has_valid_frame_;
  75
  76   // Whether a new frame is available that we should update to.
  77   bool has_pending_frame_;
  78
  79   GpuCommandBufferStub* owner_stub_;
  80   int32 route_id_;
  81   bool has_listener_;
  82
  83   base::WeakPtrFactory<StreamTexture> weak_factory_;
  84   DISALLOW_COPY_AND_ASSIGN(StreamTexture);
  85 };
  86
  87 }  // namespace content
  88
  89 #endif  // CONTENT_COMMON_GPU_STREAM_TEXTURE_ANDROID_H_