1/* 2 * Copyright (C) 2009 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17#ifndef AMR_EXTRACTOR_H_ 18 19#define AMR_EXTRACTOR_H_ 20 21#include <utils/Errors.h> 22#include <media/MediaExtractor.h> 23#include <media/stagefright/MetaDataBase.h> 24 25namespace android { 26 27struct AMessage; 28class String8; 29#define OFFSET_TABLE_LEN 300 30 31class AMRExtractor : public MediaExtractor { 32public: 33 explicit AMRExtractor(DataSourceBase *source); 34 35 virtual size_t countTracks(); 36 virtual MediaTrack *getTrack(size_t index); 37 virtual status_t getTrackMetaData(MetaDataBase& meta, size_t index, uint32_t flags); 38 39 virtual status_t getMetaData(MetaDataBase& meta); 40 virtual const char * name() { return "AMRExtractor"; } 41 42protected: 43 virtual ~AMRExtractor(); 44 45private: 46 DataSourceBase *mDataSource; 47 MetaDataBase mMeta; 48 status_t mInitCheck; 49 bool mIsWide; 50 51 off64_t mOffsetTable[OFFSET_TABLE_LEN]; //5 min 52 size_t mOffsetTableLength; 53 54 AMRExtractor(const AMRExtractor &); 55 AMRExtractor &operator=(const AMRExtractor &); 56}; 57 58} // namespace android 59 60#endif // AMR_EXTRACTOR_H_ 61