Add Pepper VideoReader and VideoWriter plumbing

content/renderer/pepper/pepper_video_source_host.h

+// Copyright (c) 2013 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_PEPPER_PEPPER_VIDEO_SOURCE_HOST_H_
+#define CONTENT_RENDERER_PEPPER_PEPPER_VIDEO_SOURCE_HOST_H_
+
+#include "base/compiler_specific.h"
+#include "base/memory/scoped_ptr.h"
+#include "base/memory/weak_ptr.h"
+#include "content/common/content_export.h"
+#include "ppapi/c/pp_size.h"
+#include "ppapi/c/ppb_image_data.h"
+#include "ppapi/host/resource_host.h"
+
+namespace content {
+
+class RendererPpapiHost;
+
+class CONTENT_EXPORT PepperVideoSourceHost : public ppapi::host::ResourceHost {
+ public:
+  PepperVideoSourceHost(RendererPpapiHost* host,
+                        PP_Instance instance,
+                        PP_Resource resource);
+
+  virtual ~PepperVideoSourceHost();
+
+  virtual int32_t OnResourceMessageReceived(
+      const IPC::Message& msg,
+      ppapi::host::HostMessageContext* context) OVERRIDE;
+
+ private:
+  int32_t OnHostMsgOpen(ppapi::host::HostMessageContext* context,
+                        const std::string& stream_id);
+  int32_t OnHostMsgGetFrame(ppapi::host::HostMessageContext* context);
+  int32_t OnHostMsgClose(ppapi::host::HostMessageContext* context);
+
+  RendererPpapiHost* renderer_ppapi_host_;
+
+  base::WeakPtrFactory<PepperVideoSourceHost> weak_factory_;
+
+  double last_timestamp_;
+
+  DISALLOW_COPY_AND_ASSIGN(PepperVideoSourceHost);
+};
+
+}  // namespace content
+
+#endif  // CONTENT_RENDERER_PEPPER_PEPPER_VIDEO_SOURCE_HOST_H_