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/stagefright/MediaExtractor.h> 23 #include <utils/threads.h> 24 #include <utils/KeyedVector.h> 25 26 namespace android { 27 28 struct ABuffer; 29 struct AMessage; 30 struct Track; 31 class String8; 32 33 struct MPEG2PSExtractor : public MediaExtractor { 34 explicit MPEG2PSExtractor(const sp<DataSource> &source); 35 36 virtual size_t countTracks(); 37 virtual sp<IMediaSource> getTrack(size_t index); 38 virtual sp<MetaData> getTrackMetaData(size_t index, uint32_t flags); 39 40 virtual sp<MetaData> getMetaData(); 41 42 virtual uint32_t flags() const; 43 virtual const char * name() { return "MPEG2PSExtractor"; } 44 45 protected: 46 virtual ~MPEG2PSExtractor(); 47 48 private: 49 struct Track; 50 struct WrappedTrack; 51 52 mutable Mutex mLock; 53 sp<DataSource> mDataSource; 54 55 off64_t mOffset; 56 status_t mFinalResult; 57 sp<ABuffer> mBuffer; 58 KeyedVector<unsigned, sp<Track> > mTracks; 59 bool mScanning; 60 61 bool mProgramStreamMapValid; 62 KeyedVector<unsigned, unsigned> mStreamTypeByESID; 63 64 status_t feedMore(); 65 66 status_t dequeueChunk(); 67 ssize_t dequeuePack(); 68 ssize_t dequeueSystemHeader(); 69 ssize_t dequeuePES(); 70 71 DISALLOW_EVIL_CONSTRUCTORS(MPEG2PSExtractor); 72 }; 73 74 bool SniffMPEG2PS( 75 const sp<DataSource> &source, String8 *mimeType, float *confidence, 76 sp<AMessage> *); 77 78 } // namespace android 79 80 #endif // MPEG2_PS_EXTRACTOR_H_ 81 82
