Implement media::VideoDecodeAccelerator on Mac

content/common/gpu/media/rendering_helper.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_MEDIA_RENDERING_HELPER_H_
+#define CONTENT_COMMON_GPU_MEDIA_RENDERING_HELPER_H_
+
+#include "base/basictypes.h"
+
+namespace base {
+class WaitableEvent;
+}
+
+namespace video_test_util {
+
+// Creates and draws textures used by the video decoder.
+// This class is not thread safe and thus all the methods of this class
+// (except for ctor/dtor) ensure they're being run on a single thread.
+class RenderingHelper {
+ public:
+  // Create a platform specifc implementation this object.
+  static RenderingHelper* Create();
+
+  // Platform specific setup.
+  static void InitializePlatform();
+
+  RenderingHelper() {}
+  virtual ~RenderingHelper() {}
+
+  // Create the window and render context.
+  virtual void Initialize(bool suppress_swap_to_display,
+                          int num_windows,
+                          int width,
+                          int height,
+                          base::WaitableEvent* done) = 0;
+
+  // Undo the effects of Initialize() and signal |*done|.
+  virtual void UnInitialize(base::WaitableEvent* done) = 0;
+
+  // Return a newly-created GLES2 texture id rendering to a specific window, and
+  // signal |*done|.
+  virtual void CreateTexture(int window_id,
+                             uint32* texture_id,
+                             base::WaitableEvent* done) = 0;
+
+  // Render |texture_id| to the screen (unless |suppress_swap_to_display_|).
+  virtual void RenderTexture(uint32 texture_id) = 0;
+
+  // Delete |texture_id|.
+  virtual void DeleteTexture(uint32 texture_id) = 0;
+
+  // Get the platform specific handle to the OpenGL context.
+  virtual void* GetGLContext() = 0;
+
+  // Get the platform specific handle to the OpenGL display.
+  virtual void* GetGLDisplay() = 0;
+};
+
+}  // namespace video_test_util
+
+#endif  // CONTENT_COMMON_GPU_MEDIA_RENDERING_HELPER_H_