| /********** |
| 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 3 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) 1996-2020 Live Networks, Inc. All rights reserved. |
| // A 'ServerMediaSubsession' object that creates new, unicast, "RTPSink"s |
| // on demand, from an MP3 audio file. |
| // (Actually, any MPEG-1 or MPEG-2 audio file should work.) |
| // C++ header |
| |
| #ifndef _MP3_AUDIO_FILE_SERVER_MEDIA_SUBSESSION_HH |
| #define _MP3_AUDIO_FILE_SERVER_MEDIA_SUBSESSION_HH |
| |
| #ifndef _FILE_SERVER_MEDIA_SUBSESSION_HH |
| #include "FileServerMediaSubsession.hh" |
| #endif |
| #ifndef _MP3_ADU_INTERLEAVING_HH |
| #include "MP3ADUinterleaving.hh" |
| #endif |
| #ifndef _MP3_ADU_HH |
| #include "MP3ADU.hh" |
| #endif |
| |
| class MP3AudioFileServerMediaSubsession: public FileServerMediaSubsession{ |
| public: |
| static MP3AudioFileServerMediaSubsession* |
| createNew(UsageEnvironment& env, char const* fileName, Boolean reuseFirstSource, |
| Boolean generateADUs, Interleaving* interleaving); |
| // Note: "interleaving" is used only if "generateADUs" is True, |
| // (and a value of NULL means 'no interleaving') |
| |
| protected: |
| MP3AudioFileServerMediaSubsession(UsageEnvironment& env, |
| char const* fileName, Boolean reuseFirstSource, |
| Boolean generateADUs, |
| Interleaving* interleaving); |
| // called only by createNew(); |
| virtual ~MP3AudioFileServerMediaSubsession(); |
| |
| FramedSource* createNewStreamSourceCommon(FramedSource* baseMP3Source, unsigned mp3NumBytes, unsigned& estBitrate); |
| void getBaseStreams(FramedSource* frontStream, |
| FramedSource*& sourceMP3Stream, ADUFromMP3Source*& aduStream/*if any*/); |
| |
| protected: // redefined virtual functions |
| virtual void seekStreamSource(FramedSource* inputSource, double& seekNPT, double streamDuration, u_int64_t& numBytes); |
| virtual void setStreamSourceScale(FramedSource* inputSource, float scale); |
| virtual FramedSource* createNewStreamSource(unsigned clientSessionId, |
| unsigned& estBitrate); |
| virtual RTPSink* createNewRTPSink(Groupsock* rtpGroupsock, |
| unsigned char rtpPayloadTypeIfDynamic, |
| FramedSource* inputSource); |
| virtual void testScaleFactor(float& scale); |
| virtual float duration() const; |
| |
| protected: |
| Boolean fGenerateADUs; |
| Interleaving* fInterleaving; |
| float fFileDuration; |
| }; |
| |
| #endif |