RtpEventReceiver.cxx
上传用户:sy_wanhua
上传日期:2013-07-25
资源大小:3048k
文件大小:6k
源码类别:
流媒体/Mpeg4/MP4
开发平台:
C/C++
- /* ====================================================================
- * The Vovida Software License, Version 1.0
- *
- * Copyright (c) 2000 Vovida Networks, Inc. All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in
- * the documentation and/or other materials provided with the
- * distribution.
- *
- * 3. The names "VOCAL", "Vovida Open Communication Application Library",
- * and "Vovida Open Communication Application Library (VOCAL)" must
- * not be used to endorse or promote products derived from this
- * software without prior written permission. For written
- * permission, please contact vocal@vovida.org.
- *
- * 4. Products derived from this software may not be called "VOCAL", nor
- * may "VOCAL" appear in their name, without prior written
- * permission of Vovida Networks, Inc.
- *
- * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESSED OR IMPLIED
- * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
- * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, TITLE AND
- * NON-INFRINGEMENT ARE DISCLAIMED. IN NO EVENT SHALL VOVIDA
- * NETWORKS, INC. OR ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT DAMAGES
- * IN EXCESS OF $1,000, NOR FOR ANY INDIRECT, INCIDENTAL, SPECIAL,
- * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
- * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
- * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
- * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
- * USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
- * DAMAGE.
- *
- * ====================================================================
- *
- * This software consists of voluntary contributions made by Vovida
- * Networks, Inc. and many individuals on behalf of Vovida Networks,
- * Inc. For more information on Vovida Networks, Inc., please see
- * <http://www.vovida.org/>.
- *
- */
- #include "Rtp.hxx"
- #include "RtpEventReceiver.hxx"
- #include "RtpPacket.hxx"
- RtpEventReceiver::RtpEventReceiver()
- {
- _DTMFInterface = 0;
- _keyEvent = KeyEventNULL;
- _DTMFEvent = DTMFEventNULL;
- return;
- }
- RtpEventReceiver::~RtpEventReceiver()
- {
- return;
- }
- void RtpEventReceiver::recvEvent( RtpPacket* p )
- {
- if( _DTMFInterface == 0 )
- return;
- switch( p->getPayloadType() )
- {
- case( rtpPayloadDTMF_RFC2833 ):
- recvEventRFC2833( p );
- break;
- case( rtpPayloadCiscoRtp ):
- recvEventCiscoRTP( p );
- break;
- default:
- cpLog(LOG_ERR, "Unknown rtp payload event");
- return;
- }
- return;
- }
- void RtpEventReceiver::recvEventRFC2833( RtpPacket* p )
- {
- assert(p->getPayloadType() == rtpPayloadDTMF_RFC2833);
- assert(p->getPayloadUsage() != 0);
- assert(p->getHeader() != 0);
- RtpEventDTMFRFC2833* e = reinterpret_cast<RtpEventDTMFRFC2833*> (p->getPayloadLoc());
- assert(e != NULL);
- if( e->edge == 1)
- {
- if( _keyEvent == KeyEventOn )
- {
- // off detection
- cpLog(LOG_DEBUG_STACK, "DTMF off detected: %d", _DTMFEvent);
- sendToDTMFInterface ( _DTMFEvent, e->duration );
- _keyEvent = KeyEventNULL;
- }
- }
- else // (e->edge == 0)
- {
- if (_keyEvent == KeyEventNULL)
- {
- // on detection
- _keyEvent = KeyEventOn;
- _DTMFEvent = DTMFToEvent( e->event );
- cpLog(LOG_DEBUG_STACK, "DTMF on detected: %d", _DTMFEvent);
- }
- return;
- }
- }
- void RtpEventReceiver::recvEventCiscoRTP( RtpPacket* p )
- {
- assert(p->getPayloadType() == rtpPayloadCiscoRtp);
- RtpEventDTMFCiscoRtp* e = reinterpret_cast<RtpEventDTMFCiscoRtp*>
- (p->getPayloadLoc());
- if( _keyEvent != KeyEventOn && e->digitType == 1 )
- {
- // on detection
- _keyEvent = KeyEventOn;
- _DTMFEvent = DTMFToEvent(e->digitCode);
- cpLog(LOG_DEBUG_STACK, "DTMF on detected: %d", _DTMFEvent);
- }
- else if( _keyEvent == KeyEventOn && e->digitType == 0 && e->edge == 0 )
- {
- // off detection
- cpLog(LOG_DEBUG_STACK, "DTMF off detected: %d", _DTMFEvent);
- sendToDTMFInterface( _DTMFEvent, 20 );
- _keyEvent = KeyEventNULL;
- }
- return;
- }
- void RtpEventReceiver::sendToDTMFInterface( const DTMFEvent e,
- unsigned int duration )
- {
- if( _DTMFInterface != 0 )
- {
- cpLog(LOG_DEBUG_STACK, "Sending event %d to DTMFInterface", e);
- _DTMFInterface->sendDTMF( e, duration );
- }
- return ;
- }
- DTMFEvent RtpEventReceiver::DTMFToEvent( int event )
- {
- DTMFEvent result;
- switch( event )
- {
- case 0:
- result = DTMFEventDigit0;
- break;
- case 1:
- result = DTMFEventDigit1;
- break;
- case 2:
- result = DTMFEventDigit2;
- break;
- case 3:
- result = DTMFEventDigit3;
- break;
- case 4:
- result = DTMFEventDigit4;
- break;
- case 5:
- result = DTMFEventDigit5;
- break;
- case 6:
- result = DTMFEventDigit6;
- break;
- case 7:
- result = DTMFEventDigit7;
- break;
- case 8:
- result = DTMFEventDigit8;
- break;
- case 9:
- result = DTMFEventDigit9;
- break;
- case 10:
- result = DTMFEventDigitStar;
- break;
- case 11:
- result = DTMFEventDigitHash;
- break;
- default:
- cpLog(LOG_ERR, "Unknown DTMF event during conversion");
- result = DTMFEventNULL;
- }
- return result;
- }