Bug 1288618 - Part 5: Add IPC serialization helpers for some media structs/enums. r=dvander

dom/media/ipc/MediaIPCUtils.h

@@ -0,0 +1,48 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef mozilla_dom_media_MediaIPCUtils_h
+#define mozilla_dom_media_MediaIPCUtils_h
+
+#include "ipc/IPCMessageUtils.h"
+#include "mozilla/GfxMessageUtils.h"
+#include "PlatformDecoderModule.h"
+
+namespace IPC {
+  template<>
+  struct ParamTraits<mozilla::VideoInfo>
+  {
+    typedef mozilla::VideoInfo paramType;
+
+    static void Write(Message* aMsg, const paramType& aParam)
+    {
+      // TrackInfo
+      WriteParam(aMsg, aParam.mMimeType);
+
+      // VideoInfo
+      WriteParam(aMsg, aParam.mDisplay);
+      WriteParam(aMsg, aParam.mStereoMode);
+      WriteParam(aMsg, aParam.mImage);
+      WriteParam(aMsg, aParam.ImageRect());
+    }
+
+    static bool Read(const Message* aMsg, PickleIterator* aIter, paramType* aResult)
+    {
+      nsIntRect imageRect;
+      if (ReadParam(aMsg, aIter, &aResult->mMimeType) &&
+          ReadParam(aMsg, aIter, &aResult->mDisplay) &&
+          ReadParam(aMsg, aIter, &aResult->mStereoMode) &&
+          ReadParam(aMsg, aIter, &aResult->mImage) &&
+          ReadParam(aMsg, aIter, &imageRect)) {
+        aResult->SetImageRect(imageRect);
+        return true;
+      }
+      return false;
+    }
+  };
+} // namespace IPC
+
+#endif // mozilla_dom_media_MediaIPCUtils_h