1 files changed, 48 insertions, 0 deletions
diff --git a/include/media/stagefright/foundation/AHandlerReflector.h b/include/media/stagefright/foundation/AHandlerReflector.h
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+++ b/include/media/stagefright/foundation/AHandlerReflector.h
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+/*
+ * Copyright (C) 2010 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef A_HANDLER_REFLECTOR_H_
+
+#define A_HANDLER_REFLECTOR_H_
+
+#include <media/stagefright/foundation/AHandler.h>
+
+namespace android {
+
+template<class T>
+struct AHandlerReflector : public AHandler {
+    AHandlerReflector(T *target)
+        : mTarget(target) {
+    }
+
+protected:
+    virtual void onMessageReceived(const sp<AMessage> &msg) {
+        sp<T> target = mTarget.promote();
+        if (target != NULL) {
+            target->onMessageReceived(msg);
+        }
+    }
+
+private:
+    wp<T> mTarget;
+
+    AHandlerReflector(const AHandlerReflector<T> &);
+    AHandlerReflector<T> &operator=(const AHandlerReflector<T> &);
+};
+
+}  // namespace android
+
+#endif  // A_HANDLER_REFLECTOR_H_