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 MPEG2TS_WRITER_H_ 18 19#define MPEG2TS_WRITER_H_ 20 21#include <media/stagefright/foundation/ABase.h> 22#include <media/stagefright/foundation/AHandlerReflector.h> 23#include <media/stagefright/foundation/ALooper.h> 24#include <media/stagefright/MediaWriter.h> 25 26namespace android { 27 28struct ABuffer; 29 30struct MPEG2TSWriter : public MediaWriter { 31 MPEG2TSWriter(int fd); 32 33 MPEG2TSWriter( 34 void *cookie, 35 ssize_t (*write)(void *cookie, const void *data, size_t size)); 36 37 virtual status_t addSource(const sp<IMediaSource> &source); 38 virtual status_t start(MetaData *param = NULL); 39 virtual status_t stop() { return reset(); } 40 virtual status_t pause(); 41 virtual bool reachedEOS(); 42 virtual status_t dump(int fd, const Vector<String16>& args); 43 44 void onMessageReceived(const sp<AMessage> &msg); 45 46protected: 47 virtual ~MPEG2TSWriter(); 48 49private: 50 enum { 51 kWhatSourceNotify = 'noti' 52 }; 53 54 struct SourceInfo; 55 56 FILE *mFile; 57 58 void *mWriteCookie; 59 ssize_t (*mWriteFunc)(void *cookie, const void *data, size_t size); 60 61 sp<ALooper> mLooper; 62 sp<AHandlerReflector<MPEG2TSWriter> > mReflector; 63 64 bool mStarted; 65 66 Vector<sp<SourceInfo> > mSources; 67 size_t mNumSourcesDone; 68 69 int64_t mNumTSPacketsWritten; 70 int64_t mNumTSPacketsBeforeMeta; 71 int mPATContinuityCounter; 72 int mPMTContinuityCounter; 73 uint32_t mCrcTable[256]; 74 75 void init(); 76 77 void writeTS(); 78 void writeProgramAssociationTable(); 79 void writeProgramMap(); 80 void writeAccessUnit(int32_t sourceIndex, const sp<ABuffer> &buffer); 81 void initCrcTable(); 82 uint32_t crc32(const uint8_t *start, size_t length); 83 84 ssize_t internalWrite(const void *data, size_t size); 85 status_t reset(); 86 87 DISALLOW_EVIL_CONSTRUCTORS(MPEG2TSWriter); 88}; 89 90} // namespace android 91 92#endif // MPEG2TS_WRITER_H_ 93