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/**********
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.,
59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
**********/
// "liveMedia"
// Copyright (c) 1996-2005 Live Networks, Inc. All rights reserved.
// A 'ServerMediaSubsession' object that creates new, unicast, "RTPSink"s
// on demand, from an WAV audio file.
// C++ header
#ifndef _WAV_AUDIO_FILE_SERVER_MEDIA_SUBSESSION_HH
#define _WAV_AUDIO_FILE_SERVER_MEDIA_SUBSESSION_HH
#ifndef _FILE_SERVER_MEDIA_SUBSESSION_HH
#include "FileServerMediaSubsession.hh"
#endif
class WAVAudioFileServerMediaSubsession: public FileServerMediaSubsession{
public:
static WAVAudioFileServerMediaSubsession*
createNew(UsageEnvironment& env, char const* fileName, Boolean reuseFirstSource,
Boolean convertToULaw = False);
// If "convertToULaw" is True, 16-bit audio streams are converted to
// 8-bit u-law audio prior to streaming.
private:
WAVAudioFileServerMediaSubsession(UsageEnvironment& env, char const* fileName,
Boolean reuseFirstSource, Boolean convertToULaw);
// called only by createNew();
virtual ~WAVAudioFileServerMediaSubsession();
private: // redefined virtual functions
virtual void seekStreamSource(FramedSource* inputSource, float seekNPT);
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;
private:
Boolean fConvertToULaw;
// The following parameters of the input stream are set after
// "createNewStreamSource" is called:
unsigned char fBitsPerSample;
unsigned fSamplingFrequency;
unsigned fNumChannels;
float fFileDuration;
};
#endif
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