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 #include <utils/threads.h> 24 25 namespace mkvparser { 26 struct Segment; 27 }; 28 29 namespace android { 30 31 struct AMessage; 32 class String8; 33 34 struct DataSourceReader; 35 struct MatroskaSource; 36 37 struct MatroskaExtractor : public MediaExtractor { 38 MatroskaExtractor(const sp<DataSource> &source); 39 40 virtual size_t countTracks(); 41 42 virtual sp<MediaSource> getTrack(size_t index); 43 44 virtual sp<MetaData> getTrackMetaData( 45 size_t index, uint32_t flags); 46 47 virtual sp<MetaData> getMetaData(); 48 49 virtual uint32_t flags() const; 50 51 protected: 52 virtual ~MatroskaExtractor(); 53 54 private: 55 friend struct MatroskaSource; 56 friend struct BlockIterator; 57 58 struct TrackInfo { 59 unsigned long mTrackNum; 60 sp<MetaData> mMeta; 61 }; 62 63 Mutex mLock; 64 Vector<TrackInfo> mTracks; 65 66 sp<DataSource> mDataSource; 67 DataSourceReader *mReader; 68 mkvparser::Segment *mSegment; 69 bool mExtractedThumbnails; 70 bool mIsLiveStreaming; 71 bool mIsWebm; 72 73 void addTracks(); 74 void findThumbnails(); 75 76 bool isLiveStreaming() const; 77 78 MatroskaExtractor(const MatroskaExtractor &); 79 MatroskaExtractor &operator=(const MatroskaExtractor &); 80 }; 81 82 bool SniffMatroska( 83 const sp<DataSource> &source, String8 *mimeType, float *confidence, 84 sp<AMessage> *); 85 86 } // namespace android 87 88 #endif // MATROSKA_EXTRACTOR_H_ 89
