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 class DataSource; 26 class String8; 27 28 class MP3Extractor : public MediaExtractor { 29 public: 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); 36 37 protected: 38 virtual ~MP3Extractor(); 39 40 private: 41 sp<DataSource> mDataSource; 42 off_t mFirstFramePos; 43 sp<MetaData> mMeta; 44 uint32_t mFixedHeader; 45 46 MP3Extractor(const MP3Extractor &); 47 MP3Extractor &operator=(const MP3Extractor &); 48 }; 49 50 bool SniffMP3( 51 const sp<DataSource> &source, String8 *mimeType, float *confidence); 52 53 } // namespace android 54 55 #endif // MP3_EXTRACTOR_H_ 56