MP3Extractor.h revision 5a1c3529e4fa2f8a11054181294e0ce79fff8dd3
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 MP3_EXTRACTOR_H_ 18 19#define MP3_EXTRACTOR_H_ 20 21#include <media/stagefright/MediaExtractor.h> 22 23namespace android { 24 25struct AMessage; 26class DataSource; 27class String8; 28 29class MP3Extractor : public MediaExtractor { 30public: 31 // Extractor assumes ownership of "source". 32 MP3Extractor(const sp<DataSource> &source, const sp<AMessage> &meta); 33 34 virtual size_t countTracks(); 35 virtual sp<MediaSource> getTrack(size_t index); 36 virtual sp<MetaData> getTrackMetaData(size_t index, uint32_t flags); 37 38 virtual sp<MetaData> getMetaData(); 39 40protected: 41 virtual ~MP3Extractor(); 42 43private: 44 sp<DataSource> mDataSource; 45 off_t mFirstFramePos; 46 sp<MetaData> mMeta; 47 uint32_t mFixedHeader; 48 int32_t mByteNumber; // total number of bytes in this MP3 49 char mTableOfContents[99]; // TOC entries in XING header 50 51 MP3Extractor(const MP3Extractor &); 52 MP3Extractor &operator=(const MP3Extractor &); 53}; 54 55bool SniffMP3( 56 const sp<DataSource> &source, String8 *mimeType, float *confidence, 57 sp<AMessage> *meta); 58 59} // namespace android 60 61#endif // MP3_EXTRACTOR_H_ 62