[PPAPI] Added serialization for resource PP_Vars.
This adds a RawVarData subclass, ResourceRawVarData, which allows vars with type
PP_VARTYPE_RESOURCE to be serialized and deserialized.
BUG=177017
Review URL: https://chromiumcodereview.appspot.com/23769010
git-svn-id: svn://svn.chromium.org/chrome/trunk/src@224969 0039d316-1c4b-4281-b951-d872f2087c98
diff --git a/ppapi/proxy/raw_var_data.h b/ppapi/proxy/raw_var_data.h
index c7981d3..201da2c 100644
--- a/ppapi/proxy/raw_var_data.h
+++ b/ppapi/proxy/raw_var_data.h
@@ -255,6 +255,41 @@
std::vector<std::pair<std::string, size_t> > children_;
};
+// A RawVarData class for resource PP_Vars.
+// This class does not hold a reference on the PP_Resource that is being
+// serialized. If sending a resource from the plugin to the host, the plugin
+// should not release the ResourceVar before sending the serialized message to
+// the host, and the host should immediately consume the ResourceVar before
+// processing further messages.
+class ResourceRawVarData : public RawVarData {
+ public:
+ ResourceRawVarData();
+ virtual ~ResourceRawVarData();
+
+ // RawVarData implementation.
+ virtual PP_VarType Type() OVERRIDE;
+ virtual bool Init(const PP_Var& var, PP_Instance instance) OVERRIDE;
+ virtual PP_Var CreatePPVar(PP_Instance instance) OVERRIDE;
+ virtual void PopulatePPVar(const PP_Var& var,
+ const std::vector<PP_Var>& graph) OVERRIDE;
+ virtual void Write(IPC::Message* m,
+ const HandleWriter& handle_writer) OVERRIDE;
+ virtual bool Read(PP_VarType type,
+ const IPC::Message* m,
+ PickleIterator* iter) OVERRIDE;
+
+ private:
+ // Resource ID in the plugin. If one has not yet been created, this is 0.
+ // This is a borrowed reference; the resource's refcount is not incremented.
+ PP_Resource pp_resource_;
+
+ // A message containing information about how to create a plugin-side
+ // resource. The message type will vary based on the resource type, and will
+ // usually contain a pending resource host ID, and other required information.
+ // If the resource was created directly, this is NULL.
+ scoped_ptr<IPC::Message> creation_message_;
+};
+
} // namespace proxy
} // namespace ppapi
