OpPlay.cxx
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上传日期:2013-07-25
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- /* ====================================================================
- * 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 281421,000, 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/>.
- *
- */
- static const char* const OpPlay_cxx_version =
- "$Id: OpPlay.cxx,v 1.35 2001/05/15 20:26:08 bko Exp $";
- #include "OpPlay.hxx"
- #include "RtspServer.hxx"
- #include "RtspSessionManager.hxx"
- #include "RtspRtpProcessor.hxx"
- #include "RtspPlayMsg.hxx"
- #include "RtspRtpInfoHdr.hxx"
- //check sessionId matches file in fileHandler
- const Sptr<State>
- OpPlay::process( const Sptr<StateEvent> event )
- {
- Sptr<RtspMsg> origMsg = event->getRtspMsg();
- Sptr<RtspPlayMsg> msg;
- msg.dynamicCast(origMsg);
- if( msg == 0 )
- {
- return NEXT_STATE;
- }
- cpLog( LOG_DEBUG, "Handling PLAY" );
- Sptr<RtspSession> session = RtspSessionManager::instance().
- getRtspSession( msg->getSessionId() );
- assert( session != 0 );
- // play reqested file
- cpLog( LOG_DEBUG, "Playing file: %s", session->fileHandler()->filename().getData() );
- if( session->state() != StateMachine::instance().findState( "StatePlaying", true ) )
- {
- processPendingEvent( msg );
- }
- else
- {
- // 200 reponse will come when RtspRtpProcessor handles play request
- cpLog( LOG_DEBUG, "Adding Play request into pending play fifo" );
- session->addPendingEvent( msg );
- }
- return DONE_STATE;
- }
- void
- OpPlay::processPendingEvent( Sptr<RtspPlayMsg> event )
- {
- Sptr<RtspSession> session = RtspSessionManager::instance().
- getRtspSession( event->getSessionId() );
- assert( session != 0 );
- cpLog( LOG_DEBUG, "Processing play request for session %s",
- session->sessionId().getData() );
- long startTime;
- long endTime;
- // process range header
- Sptr<RtspRangeHdr> range = event->getRange();
- if( range == 0 )
- {
- // default range from beginning to end
- startTime = 0;
- endTime = session->fileHandler()->length();
- }
- else
- {
- // range found
- startTime = event->getRange()->getStartTime();
- endTime = event->getRange()->getEndTime();
- // this is same as no range header
- if( startTime != -1 && endTime != -1 )
- {
- if( startTime < 0 )
- {
- startTime = 0;
- }
- if( endTime < 0 )
- {
- endTime = session->fileHandler()->length();
- }
- }
- }
- #ifdef INFINITE_READ
- endTime = -1;
- #endif
- // adjust new start and end times
- if( session->state() == StateMachine::instance().findState( "StatePausePlay", true ) &&
- range == 0 && session->myPausePoint != -1 )
- {
- session->myPausePoint = -1;
- session->myPacketTotal = ( session->myPacketTotal == -1 ) ? -1 :
- session->myPacketTotal - session->myPacketCounter;
- session->myPacketCounter = 0;
- cpLog( LOG_DEBUG, "Unpausing at npt %d", session->myCurrentNpt );
- }
- else
- {
- session->myPausePoint = -1;
- session->myCurrentNpt = startTime;
- session->fileHandler()->seek( startTime );
- session->myPacketTotal = ( endTime == -1 ) ? -1 :
- ( endTime - startTime ) / session->myPacketIntervalMs;
- session->myPacketCounter = 0;
- if( endTime != -1 )
- cpLog( LOG_DEBUG, "Playing new npt interval %d - %d", startTime, endTime );
- else
- cpLog( LOG_DEBUG, "Playing new npt interval %d - <unknown>", startTime );
- }
- cpLog( LOG_DEBUG, "Playing %d %dbyte packets at %dms intervals",
- session->myPacketTotal, session->fileHandler()->packetSize(),
- session->myPacketIntervalMs );
- // build and send response
- Sptr<RtspResponse> resp = new RtspResponse( event, RTSP_200_STATUS );
- Data filenameUrl( session->fileHandler()->filenameUrl() );
- Sptr<RtspRtpInfoHdr> rtspInfo = new RtspRtpInfoHdr( filenameUrl );
- rtspInfo->mySeq = session->rtpSession()->getPrevSequence();
- rtspInfo->myRtptime = session->rtpSession()->getPrevRtpTime();
- resp->appendRtpInfoHdr( rtspInfo );
- session->rtpSession()->setMarkerOnce();
- RtspServer::instance().sendResponse( resp );
- // add statistic data
- if (RtspConfiguration::instance().logStatistics)
- {
- session->myPerPlayReqData.myPktsSent = 0;
- session->myPerPlayReqData.myBytesSent = 0;
- session->myPerPlayReqData.myStreamWaitSent.start();
- }
- // move into playing state
- session->state( StateMachine::instance().findState( "StatePlaying" ) );
- // add session into rtp processor
- RtspRtpProcessor::instance().addInitalEvent( session );
- return;
- }
- /* Local Variables: */
- /* c-file-style: "stroustrup" */
- /* indent-tabs-mode: nil */
- /* c-file-offsets: ((access-label . -) (inclass . ++)) */
- /* c-basic-offset: 4 */
- /* End: */