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diff --git a/media/libstagefright/include/WAVExtractor.h b/media/libstagefright/include/WAVExtractor.h
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+++ b/media/libstagefright/include/WAVExtractor.h
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+/*
+ * Copyright (C) 2009 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 WAV_EXTRACTOR_H_
+
+#define WAV_EXTRACTOR_H_
+
+#include <utils/Errors.h>
+#include <media/stagefright/MediaExtractor.h>
+
+namespace android {
+
+struct AMessage;
+class DataSource;
+class String8;
+
+class WAVExtractor : public MediaExtractor {
+public:
+    // Extractor assumes ownership of "source".
+    WAVExtractor(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 ~WAVExtractor();
+
+private:
+    sp<DataSource> mDataSource;
+    status_t mInitCheck;
+    bool mValidFormat;
+    uint16_t mWaveFormat;
+    uint16_t mNumChannels;
+    uint32_t mChannelMask;
+    uint32_t mSampleRate;
+    uint16_t mBitsPerSample;
+    off64_t mDataOffset;
+    size_t mDataSize;
+    sp<MetaData> mTrackMeta;
+
+    status_t init();
+
+    WAVExtractor(const WAVExtractor &);
+    WAVExtractor &operator=(const WAVExtractor &);
+};
+
+bool SniffWAV(
+        const sp<DataSource> &source, String8 *mimeType, float *confidence,
+        sp<AMessage> *);
+
+}  // namespace android
+
+#endif  // WAV_EXTRACTOR_H_
+