content: Out-of-process GPU service support for SurfaceTexture backed GpuMemoryBuffers.

content/common/gpu/gpu_memory_buffer_factory_android.cc

 // Copyright 2014 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.
 
 #include "content/common/gpu/gpu_memory_buffer_factory.h"
 
 #include "base/logging.h"
+#include "content/common/gpu/gpu_memory_buffer_factory_surface_texture.h"
 #include "ui/gl/gl_image.h"
 #include "ui/gl/gl_image_shared_memory.h"
-#include "ui/gl/gl_image_surface_texture.h"
 
 namespace content {
 namespace {
 
 class GpuMemoryBufferFactoryImpl : public GpuMemoryBufferFactory {
  public:
   // Overridden from GpuMemoryBufferFactory:
   virtual gfx::GpuMemoryBufferHandle CreateGpuMemoryBuffer(
       const gfx::GpuMemoryBufferHandle& handle,
       const gfx::Size& size,
       unsigned internalformat,
       unsigned usage) OVERRIDE {
-    NOTREACHED();
-    return gfx::GpuMemoryBufferHandle();
+    switch (handle.type) {
+      case gfx::SURFACE_TEXTURE_BUFFER:
+        return surface_texture_factory_.CreateGpuMemoryBuffer(
+            handle.global_id, size, internalformat);
+      default:
+        NOTREACHED();
+        return gfx::GpuMemoryBufferHandle();
+    }
   }
   virtual void DestroyGpuMemoryBuffer(
       const gfx::GpuMemoryBufferHandle& handle) OVERRIDE {
-    NOTREACHED();
+    switch (handle.type) {
+      case gfx::SURFACE_TEXTURE_BUFFER:
+        surface_texture_factory_.DestroyGpuMemoryBuffer(handle.global_id);
+        break;
+      default:
+        NOTREACHED();
+        break;
+    }
   }
   virtual scoped_refptr<gfx::GLImage> CreateImageForGpuMemoryBuffer(
       const gfx::GpuMemoryBufferHandle& handle,
       const gfx::Size& size,
       unsigned internalformat,
       int client_id) OVERRIDE {
     switch (handle.type) {
       case gfx::SHARED_MEMORY_BUFFER: {
         scoped_refptr<gfx::GLImageSharedMemory> image(
             new gfx::GLImageSharedMemory(size, internalformat));
         if (!image->Initialize(handle))
           return NULL;
 
         return image;
       }
       case gfx::SURFACE_TEXTURE_BUFFER: {
-        scoped_refptr<gfx::GLImageSurfaceTexture> image(
-            new gfx::GLImageSurfaceTexture(size));
-        if (!image->Initialize(handle))
-          return NULL;
+        // Verify that client is the owner of the buffer we're about to use.
+        if (handle.global_id.secondary_id != client_id)
+          return scoped_refptr<gfx::GLImage>();
 
-        return image;
+        return surface_texture_factory_.CreateImageForGpuMemoryBuffer(
+            handle.global_id, size, internalformat);
       }
       default:
         NOTREACHED();
         return scoped_refptr<gfx::GLImage>();
     }
   }
+
+ private:
+  GpuMemoryBufferFactorySurfaceTexture surface_texture_factory_;
 };
 
 }  // namespace
 
 // static
 scoped_ptr<GpuMemoryBufferFactory> GpuMemoryBufferFactory::Create() {
   return make_scoped_ptr<GpuMemoryBufferFactory>(
       new GpuMemoryBufferFactoryImpl);
 }
 
 }  // namespace content