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diff --git a/media/libstagefright/include/AACExtractor.h b/media/libstagefright/include/AACExtractor.h
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+++ b/media/libstagefright/include/AACExtractor.h
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+/*
+ * Copyright (C) 2011 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 AAC_EXTRACTOR_H_
+
+#define AAC_EXTRACTOR_H_
+
+#include <media/stagefright/MediaExtractor.h>
+
+#include <utils/Vector.h>
+
+namespace android {
+
+struct AMessage;
+class String8;
+
+class AACExtractor : public MediaExtractor {
+public:
+    AACExtractor(const sp<DataSource> &source);
+
+    virtual size_t countTracks();
+    virtual sp<MediaSource> getTrack(size_t index);
+    virtual sp<MetaData> getTrackMetaData(size_t index, uint32_t flags);
+
+    virtual sp<MetaData> getMetaData();
+
+protected:
+    virtual ~AACExtractor();
+
+private:
+    sp<DataSource> mDataSource;
+    sp<MetaData> mMeta;
+    status_t mInitCheck;
+
+    Vector<uint64_t> mOffsetVector;
+    int64_t mFrameDurationUs;
+
+    AACExtractor(const AACExtractor &);
+    AACExtractor &operator=(const AACExtractor &);
+};
+
+bool SniffAAC(
+        const sp<DataSource> &source, String8 *mimeType, float *confidence,
+        sp<AMessage> *);
+
+}  // namespace android
+
+#endif  // AAC_EXTRACTOR_H_