These are all the files you need. Enjoy. On Sat, Sep 5, 2009 at 11:40 PM, Ross Finlayson <finlay...@live555.com>wrote:
> I've written a file sink saving AAC with ADTS for my own program, and I was >> wondering if >> it can be incorporated in live555, in case other people need something >> like this. >> > > Sure. Send the code to the mailing list, and I'll take a look at it. > > -- > > Ross Finlayson > Live Networks, Inc. > http://www.live555.com/ > _______________________________________________ > live-devel mailing list > live-devel@lists.live555.com > http://lists.live555.com/mailman/listinfo/live-devel >
/********** This library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2.1 of the License, or (at your option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.) This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details. You should have received a copy of the GNU Lesser General Public License along with this library; if not, write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA **********/ // "liveMedia" // Copyright (c) 1996-2009 Live Networks, Inc. All rights reserved. // An ADTS Audio File Sinks to receive AAC // Implementation #include "ADTSAudioFileSink.hh" #include "OutputFile.hh" #include <cstring> ////////// ADTSAudioFileSink ////////// static unsigned const samplingFrequencyTable[16] = { 96000, 88200, 64000, 48000, 44100, 32000, 24000, 22050, 16000, 12000, 11025, 8000, 7350, 0, 0, 0 }; ADTSAudioFileSink ::ADTSAudioFileSink(UsageEnvironment& env, FILE* fid,unsigned profile, unsigned samplingFrequencyIndex, unsigned channelConfiguration , unsigned bufferSize, char const* perFrameFileNamePrefix) : FileSink(env, fid, bufferSize, perFrameFileNamePrefix), profile(profile),samplingFrequencyIndex(samplingFrequencyIndex), channelConfiguration(channelConfiguration){ memset(fixedHeader,0,sizeof fixedHeader); // |1111. 1111. 1111. |1|00|1| fixedHeader[0]=0xFF; fixedHeader[1]=0xF1; fixedHeader[2] = (profile & 0x3)<<6; fixedHeader[2] |= (samplingFrequencyIndex & 0xF)<<2; //4bits fixedHeader[2] |= (channelConfiguration >>2) &0x1; fixedHeader[3] |= (channelConfiguration <<6) ;//2 bits } ADTSAudioFileSink::~ADTSAudioFileSink() { } ADTSAudioFileSink* ADTSAudioFileSink::createNew(UsageEnvironment& env, char const* fileName, unsigned profile, unsigned samplingFrequency, unsigned channel_configuration , unsigned bufferSize, Boolean oneFilePerFrame) { int spindex =-1; int i = 0; while(spindex < 0 && i < 16 && samplingFrequencyTable[i]!=0){ if(samplingFrequencyTable[i] == samplingFrequency){ spindex=i; } i++; } if(spindex<0) return NULL; do { FILE* fid; char const* perFrameFileNamePrefix; if (oneFilePerFrame) { // Create the fid for each frame fid = NULL; perFrameFileNamePrefix = fileName; } else { // Normal case: create the fid once fid = OpenOutputFile(env, fileName); if (fid == NULL) break; perFrameFileNamePrefix = NULL; } return new ADTSAudioFileSink(env, fid,profile,spindex,channel_configuration,bufferSize, perFrameFileNamePrefix); } while (0); return NULL; } Boolean ADTSAudioFileSink::sourceIsCompatibleWithUs(MediaSource& source){ // the least I can do Boolean iscompatible = (strstr(source.MIMEtype(),"/MPEG4-GENERIC" )==NULL? False:True ); return iscompatible; } void ADTSAudioFileSink::afterGettingFrame1(unsigned frameSize, struct timeval presentationTime) { // 0 1 2 3 4 5 6 unsigned char adts_header[7] = {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}; uint16_t frame_length = frameSize+7;//the size of adts header is included in the length memcpy(adts_header,fixedHeader,4*sizeof(unsigned char)); adts_header[3]|= (frame_length>>11)&0x3; adts_header[4]|= (frame_length>>3)&0xFF; adts_header[5]|= (frame_length &0x7)<<5; /*for now, i don't understand how to compute adts_buffer_fullness, 7FF make it non applicable*/ uint16_t bit_reservoir =0x7FF; adts_header[5]|= (bit_reservoir>>4) &0x1F; adts_header[6]|= (bit_reservoir&0x3F)<< 2; addData(adts_header, 7, presentationTime); // Call the parent class to complete the normal file write with the input data: FileSink::afterGettingFrame1(frameSize, presentationTime); }
/********** This library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2.1 of the License, or (at your option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.) This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details. You should have received a copy of the GNU Lesser General Public License along with this library; if not, write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA **********/ // "liveMedia" // Copyright (c) 1996-2009 Live Networks, Inc. All rights reserved. // An ADTS Audio File Sinks to receive AAC // C++ header #ifndef _ADTS_AUDIO_FILE_SINK_HH #define _ADTS_AUDIO_FILE_SINK_HH #ifndef _FILE_SINK_HH #include "FileSink.hh" #endif class ADTSAudioFileSink: public FileSink { public: static ADTSAudioFileSink* createNew(UsageEnvironment& env, char const* fileName, unsigned profile=1, unsigned samplingFrequency = 44100, unsigned channelConfiguration = 2 , unsigned bufferSize = 10000, Boolean oneFilePerFrame = False); // additionnal parameters needed for a ADTS header protected: ADTSAudioFileSink(UsageEnvironment& env, FILE* fid,unsigned profile, unsigned samplingFrequencyIndex, unsigned channelConfiguration , unsigned bufferSize, char const* perFrameFileNamePrefix); // called only by createNew() virtual ~ADTSAudioFileSink(); protected: // redefined virtual functions: virtual Boolean sourceIsCompatibleWithUs(MediaSource& source); virtual void afterGettingFrame1(unsigned frameSize, struct timeval presentationTime); private: uint8_t profile; uint8_t samplingFrequencyIndex; uint8_t channelConfiguration; unsigned char fixedHeader[4]; }; #endif
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