MPEG4Writer.h revision 39a0b21c65c3bbadc9a3c6b5346b45fac842d0f7
1/* 2 * Copyright (C) 2009 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 MPEG4_WRITER_H_ 18 19#define MPEG4_WRITER_H_ 20 21#include <stdio.h> 22 23#include <media/stagefright/MediaWriter.h> 24#include <utils/List.h> 25#include <utils/threads.h> 26 27namespace android { 28 29class MediaBuffer; 30class MediaSource; 31class MetaData; 32 33class MPEG4Writer : public MediaWriter { 34public: 35 MPEG4Writer(const char *filename); 36 MPEG4Writer(int fd); 37 38 virtual status_t addSource(const sp<MediaSource> &source); 39 virtual status_t start(); 40 virtual bool reachedEOS(); 41 virtual void stop(); 42 virtual void pause(); 43 44 void beginBox(const char *fourcc); 45 void writeInt8(int8_t x); 46 void writeInt16(int16_t x); 47 void writeInt32(int32_t x); 48 void writeInt64(int64_t x); 49 void writeCString(const char *s); 50 void writeFourcc(const char *fourcc); 51 void write(const void *data, size_t size); 52 void endBox(); 53 uint32_t interleaveDuration() const { return mInterleaveDurationUs; } 54 status_t setInterleaveDuration(uint32_t duration); 55 56protected: 57 virtual ~MPEG4Writer(); 58 59private: 60 class Track; 61 62 FILE *mFile; 63 bool mUse32BitOffset; 64 bool mPaused; 65 bool mStarted; 66 off_t mOffset; 67 off_t mMdatOffset; 68 uint8_t *mMoovBoxBuffer; 69 off_t mMoovBoxBufferOffset; 70 bool mWriteMoovBoxToMemory; 71 off_t mFreeBoxOffset; 72 bool mStreamableFile; 73 off_t mEstimatedMoovBoxSize; 74 uint32_t mInterleaveDurationUs; 75 int64_t mStartTimestampUs; 76 Mutex mLock; 77 78 List<Track *> mTracks; 79 80 List<off_t> mBoxes; 81 82 void setStartTimestampUs(int64_t timeUs); 83 int64_t getStartTimestampUs(); // Not const 84 status_t startTracks(); 85 size_t numTracks(); 86 87 void lock(); 88 void unlock(); 89 90 // Acquire lock before calling these methods 91 off_t addSample_l(MediaBuffer *buffer); 92 off_t addLengthPrefixedSample_l(MediaBuffer *buffer); 93 94 inline size_t write(const void *ptr, size_t size, size_t nmemb, FILE* stream); 95 bool exceedsFileSizeLimit(); 96 bool exceedsFileDurationLimit(); 97 98 MPEG4Writer(const MPEG4Writer &); 99 MPEG4Writer &operator=(const MPEG4Writer &); 100}; 101 102} // namespace android 103 104#endif // MPEG4_WRITER_H_ 105