[Android] Upstream all the IPC communications/handlings for stream texture

content/common/gpu/stream_texture_manager_android.h

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CONTENT_COMMON_GPU_STREAM_TEXTURE_MANAGER_ANDROID_H_
 #define CONTENT_COMMON_GPU_STREAM_TEXTURE_MANAGER_ANDROID_H_
 
+#include "base/callback.h"
 #include "base/id_map.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/memory/weak_ptr.h"
+#include "content/common/android/surface_texture_peer.h"
 #include "gpu/command_buffer/service/stream_texture.h"
 #include "gpu/command_buffer/service/stream_texture_manager.h"
 
 class GpuChannel;
+struct GpuStreamTextureMsg_MatrixChanged_Params;
+
+namespace gfx {
+class Size;
+}
 
 namespace content {
 
 class SurfaceTextureBridge;
 
 // Class for managing the stream texture.
 class StreamTextureManagerAndroid : public gpu::StreamTextureManager {
  public:
   StreamTextureManagerAndroid(GpuChannel* channel);
   virtual ~StreamTextureManagerAndroid();
 
   // implement gpu::StreamTextureManager:
-  GLuint CreateStreamTexture(uint32 service_id,
-                             uint32 client_id) OVERRIDE;
-  void DestroyStreamTexture(uint32 service_id) OVERRIDE;
-  gpu::StreamTexture* LookupStreamTexture(uint32 service_id) OVERRIDE;
+  virtual GLuint CreateStreamTexture(uint32 service_id,
+                                     uint32 client_id) OVERRIDE;
+  virtual void DestroyStreamTexture(uint32 service_id) OVERRIDE;
+  virtual gpu::StreamTexture* LookupStreamTexture(uint32 service_id) OVERRIDE;
+
+  // Methods invoked from GpuChannel.
+  void RegisterStreamTextureProxy(
+      int32 stream_id, const gfx::Size& initial_size, int32 route_id);
+  void EstablishStreamTexture(
+      int32 stream_id, content::SurfaceTexturePeer::SurfaceTextureTarget type,
+      int32 primary_id, int32 secondary_id);
+
+  // Send new transform matrix.
+  void SendMatrixChanged(int route_id,
+      const GpuStreamTextureMsg_MatrixChanged_Params& params);
 
  private:
   // The stream texture class for android.
   class StreamTextureAndroid
       : public gpu::StreamTexture,
         public base::SupportsWeakPtr<StreamTextureAndroid> {
    public:
     StreamTextureAndroid(GpuChannel* channel, int service_id);
     virtual ~StreamTextureAndroid();
 
-    void Update() OVERRIDE;
+    virtual void Update() OVERRIDE;
 
     SurfaceTextureBridge* bridge() { return surface_texture_.get(); }
 
+    // Called when a new frame is available.
+    void OnFrameAvailable(int route_id);
+
+    // Callback function when transform matrix of the surface texture
+    // has changed.
+    typedef base::Callback<
+        void(const GpuStreamTextureMsg_MatrixChanged_Params&)>
+            MatrixChangedCB;
+
+    void set_matrix_changed_callback(const MatrixChangedCB& callback) {
+        matrix_callback_ = callback;
+    }
+
    private:
     scoped_ptr<SurfaceTextureBridge> surface_texture_;
+
+    // Current transform matrix of the surface texture.
+    float current_matrix_[16];
+
+    // Whether the surface texture has been updated.
+    bool has_updated_;
+
+    MatrixChangedCB matrix_callback_;
+
     GpuChannel* channel_;
-
     DISALLOW_COPY_AND_ASSIGN(StreamTextureAndroid);
   };
 
   GpuChannel* channel_;
 
   typedef IDMap<StreamTextureAndroid, IDMapOwnPointer> TextureMap;
   TextureMap textures_;
 
+  // Map for more convenient lookup.
+  typedef IDMap<gpu::StreamTexture, IDMapExternalPointer> TextureServiceIdMap;
+  TextureServiceIdMap textures_from_service_id_;
+
   DISALLOW_COPY_AND_ASSIGN(StreamTextureManagerAndroid);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_COMMON_GPU_STREAM_TEXTURE_MANAGER_ANDROID_H_