1 /* 2 * Copyright (C) 2010 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 MATROSKA_EXTRACTOR_H_ 18 19 #define MATROSKA_EXTRACTOR_H_ 20 21 #include <media/stagefright/MediaExtractor.h> 22 #include <utils/Vector.h> 23 24 namespace mkvparser { 25 struct Segment; 26 }; 27 28 namespace android { 29 30 struct AMessage; 31 class String8; 32 33 struct DataSourceReader; 34 struct MatroskaSource; 35 36 struct MatroskaExtractor : public MediaExtractor { 37 MatroskaExtractor(const sp<DataSource> &source); 38 39 virtual size_t countTracks(); 40 41 virtual sp<MediaSource> getTrack(size_t index); 42 43 virtual sp<MetaData> getTrackMetaData( 44 size_t index, uint32_t flags); 45 46 virtual sp<MetaData> getMetaData(); 47 48 protected: 49 virtual ~MatroskaExtractor(); 50 51 private: 52 friend struct MatroskaSource; 53 54 struct TrackInfo { 55 unsigned long mTrackNum; 56 sp<MetaData> mMeta; 57 }; 58 Vector<TrackInfo> mTracks; 59 60 sp<DataSource> mDataSource; 61 DataSourceReader *mReader; 62 mkvparser::Segment *mSegment; 63 bool mExtractedThumbnails; 64 65 void addTracks(); 66 void findThumbnails(); 67 68 MatroskaExtractor(const MatroskaExtractor &); 69 MatroskaExtractor &operator=(const MatroskaExtractor &); 70 }; 71 72 bool SniffMatroska( 73 const sp<DataSource> &source, String8 *mimeType, float *confidence, 74 sp<AMessage> *); 75 76 } // namespace android 77 78 #endif // MATROSKA_EXTRACTOR_H_ 79
