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 23 namespace android { 24 25 struct AMessage; 26 class DataSource; 27 class String8; 28 29 class MP3Extractor : public MediaExtractor { 30 public: 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 40 private: 41 status_t mInitCheck; 42 43 sp<DataSource> mDataSource; 44 off_t mFirstFramePos; 45 sp<MetaData> mMeta; 46 uint32_t mFixedHeader; 47 int32_t mByteNumber; // total number of bytes in this MP3 48 char mTableOfContents[99]; // TOC entries in XING header 49 50 MP3Extractor(const MP3Extractor &); 51 MP3Extractor &operator=(const MP3Extractor &); 52 }; 53 54 bool SniffMP3( 55 const sp<DataSource> &source, String8 *mimeType, float *confidence, 56 sp<AMessage> *meta); 57 58 } // namespace android 59 60 #endif // MP3_EXTRACTOR_H_ 61
