Implement PPAPI VideoDecode out-of-process support

ppapi/proxy/ppp_video_decoder_proxy.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 PPAPI_PROXY_PPP_VIDEO_DECODER_PROXY_H_
+#define PPAPI_PROXY_PPP_VIDEO_DECODER_PROXY_H_
+
+#include "ppapi/c/dev/ppp_video_decoder_dev.h"
+#include "ppapi/c/pp_instance.h"
+#include "ppapi/proxy/host_resource.h"
+#include "ppapi/proxy/interface_proxy.h"
+
+struct PP_Picture_Dev;
+struct PP_Size;
+
+namespace pp {
+namespace proxy {
+
+class PPP_VideoDecoder_Proxy : public InterfaceProxy {
+ public:
+  PPP_VideoDecoder_Proxy(Dispatcher* dispatcher, const void* target_interface);
+  virtual ~PPP_VideoDecoder_Proxy();
+
+  static const Info* GetInfo();
+
+  const PPP_VideoDecoder_Dev* ppp_video_decoder_target() const {
+    return static_cast<const PPP_VideoDecoder_Dev*>(target_interface());
+  }
+
+  // InterfaceProxy implementation.
+  virtual bool OnMessageReceived(const IPC::Message& msg);
+
+ private:
+  // Message handlers.
+  void OnMsgProvidePictureBuffers(const HostResource& decoder,
+                                  uint32_t req_num_of_buffers,
+                                  const PP_Size& dimensions);
+  void OnMsgDismissPictureBuffer(const HostResource& decoder,
+                                 int32_t picture_id);
+  void OnMsgPictureReady(
+      const HostResource& decoder, const PP_Picture_Dev& picture_buffer);
+  void OnMsgNotifyEndOfStream(const HostResource& decoder);
+  void OnMsgNotifyError(const HostResource& decoder,
+                        PP_VideoDecodeError_Dev error);
+
+  DISALLOW_COPY_AND_ASSIGN(PPP_VideoDecoder_Proxy);
+};
+
+}  // namespace proxy
+}  // namespace pp
+
+#endif  // PPAPI_PROXY_PPP_VIDEO_DECODER_PROXY_H_