MP3Extractor.h revision ac6e6569f08911df9d5c96285cf15325cbbf0340
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 25class DataSource; 26class String8; 27 28class MP3Extractor : public MediaExtractor { 29public: 30 // Extractor assumes ownership of "source". 31 MP3Extractor(const sp<DataSource> &source); 32 33 virtual size_t countTracks(); 34 virtual sp<MediaSource> getTrack(size_t index); 35 virtual sp<MetaData> getTrackMetaData(size_t index, uint32_t flags); 36 37protected: 38 virtual ~MP3Extractor(); 39 40private: 41 sp<DataSource> mDataSource; 42 off_t mFirstFramePos; 43 sp<MetaData> mMeta; 44 uint32_t mFixedHeader; 45 int32_t mByteNumber; // total number of bytes in this MP3 46 char mTableOfContents[99]; // TOC entries in XING header 47 48 MP3Extractor(const MP3Extractor &); 49 MP3Extractor &operator=(const MP3Extractor &); 50}; 51 52bool SniffMP3( 53 const sp<DataSource> &source, String8 *mimeType, float *confidence); 54 55} // namespace android 56 57#endif // MP3_EXTRACTOR_H_ 58