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diff --git a/media/libstagefright/timedtext/TimedTextParser.h b/media/libstagefright/timedtext/TimedTextParser.h
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+++ b/media/libstagefright/timedtext/TimedTextParser.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 TIMED_TEXT_PARSER_H_
+
+#define TIMED_TEXT_PARSER_H_
+
+#include <media/MediaPlayerInterface.h>
+#include <media/stagefright/foundation/ABase.h>
+#include <media/stagefright/foundation/AString.h>
+#include <media/stagefright/MediaSource.h>
+
+namespace android {
+
+class DataSource;
+
+class TimedTextParser : public RefBase {
+public:
+    TimedTextParser();
+    virtual ~TimedTextParser();
+
+    enum FileType {
+        OUT_OF_BAND_FILE_SRT = 1,
+    };
+
+    status_t getText(AString *text, int64_t *startTimeUs, int64_t *endTimeUs,
+                     const MediaSource::ReadOptions *options = NULL);
+    status_t init(const sp<DataSource> &dataSource, FileType fileType);
+    void reset();
+
+private:
+    Mutex mLock;
+
+    sp<DataSource> mDataSource;
+    off64_t mOffset;
+
+    struct TextInfo {
+        int64_t endTimeUs;
+        // the offset of the text in the original file
+        off64_t offset;
+        int textLen;
+    };
+
+    int mIndex;
+    FileType mFileType;
+
+    // the key indicated the start time of the text
+    KeyedVector<int64_t, TextInfo> mTextVector;
+
+    status_t getNextInSrtFileFormat(
+            off64_t *offset, int64_t *startTimeUs, TextInfo *info);
+    status_t readNextLine(off64_t *offset, AString *data);
+
+    status_t scanFile();
+
+    DISALLOW_EVIL_CONSTRUCTORS(TimedTextParser);
+};
+
+}  // namespace android
+
+#endif  // TIMED_TEXT_PARSER_H_
+