Create VTVideoDecodeAccelerator

content/common/gpu/media/vt_video_decode_accelerator.h

+// Copyright (c) 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.
+
+#ifndef CONTENT_COMMON_GPU_MEDIA_VT_VIDEO_DECODE_ACCELERATOR_H_
+#define CONTENT_COMMON_GPU_MEDIA_VT_VIDEO_DECODE_ACCELERATOR_H_
+
+#include <stdint.h>
+
+#include "base/memory/ref_counted.h"
+#include "base/memory/weak_ptr.h"
+#include "base/message_loop/message_loop.h"
+#include "base/message_loop/message_loop_proxy.h"
+#include "media/video/video_decode_accelerator.h"
+#include "ui/gl/gl_context_cgl.h"
+
+namespace content {
+
+// (Stub of a) VideoToolbox.framework implementation of the
+// VideoDecodeAccelerator interface for Mac OS X.
+class VTVideoDecodeAccelerator
+    : public media::VideoDecodeAccelerator,
+      public base::NonThreadSafe {
+ public:
+  explicit VTVideoDecodeAccelerator(CGLContextObj cgl_context);
+  virtual ~VTVideoDecodeAccelerator();
+
+  // VideoDecodeAccelerator implementation.
+  virtual bool Initialize(
+      media::VideoCodecProfile profile,
+      Client* client) OVERRIDE;
+  virtual void Decode(const media::BitstreamBuffer& bitstream) OVERRIDE;
+  virtual void AssignPictureBuffers(
+      const std::vector<media::PictureBuffer>& pictures) OVERRIDE;
+  virtual void ReusePictureBuffer(int32_t picture_id) OVERRIDE;
+  virtual void Flush() OVERRIDE;
+  virtual void Reset() OVERRIDE;
+  virtual void Destroy() OVERRIDE;
+  virtual bool CanDecodeOnIOThread() OVERRIDE;
+
+ private:
+  scoped_refptr<base::MessageLoopProxy> loop_proxy_;
+  CGLContextObj cgl_context_;
+  media::VideoDecodeAccelerator::Client* client_;
+
+  // Member variables should appear before the WeakPtrFactory, to ensure
+  // that any WeakPtrs to Controller are invalidated before its members
+  // variable's destructors are executed, rendering them invalid.
+  base::WeakPtrFactory<VTVideoDecodeAccelerator> weak_this_factory_;
+
+  DISALLOW_COPY_AND_ASSIGN(VTVideoDecodeAccelerator);
+};
+
+}  // namespace content
+
+#endif  // CONTENT_COMMON_GPU_MEDIA_VT_VIDEO_DECODE_ACCELERATOR_H_