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 <utils/Errors.h> 22 #include <media/stagefright/MediaExtractor.h> 23 24 namespace android { 25 26 struct AMessage; 27 class DataSource; 28 struct MP3Seeker; 29 class String8; 30 31 class MP3Extractor : public MediaExtractor { 32 public: 33 // Extractor assumes ownership of "source". 34 MP3Extractor(const sp<DataSource> &source, const sp<AMessage> &meta); 35 36 virtual size_t countTracks(); 37 virtual sp<MediaSource> getTrack(size_t index); 38 virtual sp<MetaData> getTrackMetaData(size_t index, uint32_t flags); 39 40 virtual sp<MetaData> getMetaData(); 41 42 private: 43 status_t mInitCheck; 44 45 sp<DataSource> mDataSource; 46 off64_t mFirstFramePos; 47 sp<MetaData> mMeta; 48 uint32_t mFixedHeader; 49 sp<MP3Seeker> mSeeker; 50 51 MP3Extractor(const MP3Extractor &); 52 MP3Extractor &operator=(const MP3Extractor &); 53 }; 54 55 bool 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