1 /* 2 * Copyright (C) 2011 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 MPEG2_PS_EXTRACTOR_H_ 18 19 #define MPEG2_PS_EXTRACTOR_H_ 20 21 #include <media/stagefright/foundation/ABase.h> 22 #include <media/MediaExtractorPluginApi.h> 23 #include <media/MediaExtractorPluginHelper.h> 24 #include <media/stagefright/MetaDataBase.h> 25 #include <utils/threads.h> 26 #include <utils/KeyedVector.h> 27 28 namespace android { 29 30 struct ABuffer; 31 struct AMessage; 32 struct Track; 33 class String8; 34 35 struct MPEG2PSExtractor : public MediaExtractorPluginHelper { 36 explicit MPEG2PSExtractor(DataSourceHelper *source); 37 38 virtual size_t countTracks(); 39 virtual MediaTrackHelper *getTrack(size_t index); 40 virtual media_status_t getTrackMetaData(AMediaFormat *meta, size_t index, uint32_t flags); 41 42 virtual media_status_t getMetaData(AMediaFormat *meta); 43 44 virtual uint32_t flags() const; nameMPEG2PSExtractor45 virtual const char * name() { return "MPEG2PSExtractor"; } 46 47 protected: 48 virtual ~MPEG2PSExtractor(); 49 50 private: 51 struct Track; 52 struct WrappedTrack; 53 54 mutable Mutex mLock; 55 DataSourceHelper *mDataSource; 56 57 off64_t mOffset; 58 status_t mFinalResult; 59 sp<ABuffer> mBuffer; 60 KeyedVector<unsigned, Track* > mTracks; 61 bool mScanning; 62 63 bool mProgramStreamMapValid; 64 KeyedVector<unsigned, unsigned> mStreamTypeByESID; 65 66 status_t feedMore(); 67 68 status_t dequeueChunk(); 69 ssize_t dequeuePack(); 70 ssize_t dequeueSystemHeader(); 71 ssize_t dequeuePES(); 72 73 DISALLOW_EVIL_CONSTRUCTORS(MPEG2PSExtractor); 74 }; 75 76 bool SniffMPEG2PS(DataSourceHelper *source, float *confidence); 77 78 } // namespace android 79 80 #endif // MPEG2_PS_EXTRACTOR_H_ 81 82