<video> decode in hardware!

content/renderer/renderer_gpu_video_decoder_factories.h

+// Copyright (c) 2011 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_RENDERER_RENDERER_GPU_VIDEO_DECODER_FACTORIES_H_
+#define CONTENT_RENDERER_RENDERER_GPU_VIDEO_DECODER_FACTORIES_H_
+#pragma once
+
+#include "base/basictypes.h"
+#include "base/memory/ref_counted.h"
+#include "base/memory/weak_ptr.h"
+#include "content/common/content_export.h"
+#include "media/filters/gpu_video_decoder.h"
+#include "ui/gfx/size.h"
+
+class GpuChannelHost;
+class RendererGLContext;
+
+// Glue code to expose functionality needed by media::GpuVideoDecoder to
+// RenderViewImpl.  This class is entirely an implementation detail of
+// RenderViewImpl and only has its own header to allow extraction of its
+// implementation from render_view_impl.cc which is already far too large.
+class CONTENT_EXPORT RendererGpuVideoDecoderFactories
+    : public media::GpuVideoDecoder::Factories {
+ public:
+  // Takes a ref on |gpu_channel_host| and tests |context| for NULL before each
+  // use.
+  RendererGpuVideoDecoderFactories(GpuChannelHost* gpu_channel_host,
+                                   base::WeakPtr<RendererGLContext> context);
+
+  virtual ~RendererGpuVideoDecoderFactories();
+
+  virtual media::VideoDecodeAccelerator* CreateVideoDecodeAccelerator(
+      media::VideoDecodeAccelerator::Profile profile,
+      media::VideoDecodeAccelerator::Client* client) OVERRIDE;
+
+  virtual bool CreateTextures(int32 count, const gfx::Size& size,
+                              std::vector<uint32>* texture_ids) OVERRIDE;
+
+  virtual bool DeleteTexture(uint32 texture_id) OVERRIDE;
+
+  virtual base::SharedMemory* CreateSharedMemory(size_t size) OVERRIDE;
+
+ private:
+  scoped_refptr<GpuChannelHost> gpu_channel_host_;
+  base::WeakPtr<RendererGLContext> context_;
+  DISALLOW_IMPLICIT_CONSTRUCTORS(RendererGpuVideoDecoderFactories);
+};
+
+#endif  // CONTENT_RENDERER_RENDERER_GPU_VIDEO_DECODER_FACTORIES_H_