RtspSessionManager.cxx
上传用户:sy_wanhua
上传日期:2013-07-25
资源大小:3048k
文件大小:7k
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 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 RtspSessionManager_cxx_version =
- "$Id: RtspSessionManager.cxx,v 1.18 2001/05/15 20:26:08 bko Exp $";
- #include "RtspSessionManager.hxx"
- #include "RtspRtpProcessor.hxx"
- // singelton object definitionn
- RtspSessionManager* RtspSessionManager::myInstance = 0;
- RtspSessionManager::RtspSessionManager()
- : myMaxSessions( 1 ),
- mySessionIdList( 6000 )
- {
- #if defined (_linux_)
- // register destroy function to delete singelton
- if( atexit( RtspSessionManager::destroy ) < 0 )
- {
- cpLog( LOG_ALERT, "Failed to register with atexit()" );
- };
- #endif
- }
- RtspSessionManager&
- RtspSessionManager::instance()
- {
- if( myInstance == 0 )
- {
- myInstance = new RtspSessionManager();
- }
- return *myInstance;
- }
- RtspSessionManager::~RtspSessionManager()
- {
- }
- void
- RtspSessionManager::destroy()
- {
- delete RtspSessionManager::myInstance;
- RtspSessionManager::myInstance = 0;
- }
- bool
- RtspSessionManager::maxSessions( const int max )
- {
- bool result = true;
- if( max <= 0 )
- {
- cpLog( LOG_ERR, "Max session invalid: %d, using default value", max );
- assert( ! ( myMaxSessions <= 0 ) );
- result = false;
- }
- else
- {
- myMaxSessions = max;
- }
- cpLog( LOG_DEBUG, "Maximum number of sesions: %d", myMaxSessions );
- return result;
- }
- Data
- RtspSessionManager::addRtspSession( Sptr<RtspSession> session )
- {
- Data id( "" );
- if( myMaxSessions == 0 )
- {
- cpLog (LOG_ERR, "Can't add anymore sessions" );
- return id;
- }
- if( session->sessionMode() == RTSP_SESSION_MODE_PLAY)
- {
- if( RtspRtpProcessor::instance().playThreadLoaded() )
- {
- cpLog( LOG_ERR, "Play thread overloaded!!!!!!!!!!!!!!!!!!!!!" );
- return id;
- }
- }
- else if( session->sessionMode() == RTSP_SESSION_MODE_REC )
- {
- if( RtspRtpProcessor::instance().recordThreadLoaded() )
- {
- cpLog( LOG_ERR, "Record thread overloaded!!!!!!!!!!!!!!!!!!!" );
- return id;
- }
- }
- else
- {
- cpLog( LOG_DEBUG, "Unknown session state" );
- return id;
- }
- id = findNewSessionId();
- cpLog( LOG_DEBUG, "Adding %s to myRtspSessionMap, %d total",
- id.getData(), myRtspSessionMap.size() + 1 );
- session->sessionId( id );
- myRtspSessionMapMutex.lock();
- myRtspSessionMap[ id ] = session;
- myMaxSessions--;
- myRtspSessionMapMutex.unlock();
- return id;
- }
- bool
- RtspSessionManager::delRtspSession( const Data& sessionId )
- {
- Data result = sessionId ;
- myRtspSessionMapMutex.lock();
- if( myRtspSessionMap.find( sessionId ) == myRtspSessionMap.end() )
- {
- result = false;
- }
- else
- {
- myRtspSessionMap.erase( sessionId );
- myMaxSessions++;
- cpLog( LOG_DEBUG, "Deleting %s from myRtspSessionMap, %d remaining",
- sessionId.getData(), myRtspSessionMap.size() );
- }
- myRtspSessionMapMutex.unlock();
- return true;
- }
- Sptr<RtspSession>
- RtspSessionManager::getRtspSession( const Data& sessionId )
- {
- Sptr<RtspSession> session = 0;
- myRtspSessionMapMutex.lock();
- RtspSessionMap::iterator itr = myRtspSessionMap.find( sessionId );
- if( itr == myRtspSessionMap.end() )
- {
- cpLog( LOG_DEBUG, "Session %s not found", sessionId.getData() );
- }
- else
- {
- session = itr->second;
- }
- myRtspSessionMapMutex.unlock();
- return session;
- }
- Sptr<RtspSession>
- RtspSessionManager::getRtspSession()
- {
- Sptr<RtspSession> session = 0;
- myRtspSessionMapMutex.lock();
- RtspSessionMap::iterator itr = myRtspSessionMap.begin();
- if( itr == myRtspSessionMap.end() )
- {
- cpLog( LOG_DEBUG, "No sessions in session manager" );
- }
- else
- {
- session = itr->second;
- }
- myRtspSessionMapMutex.unlock();
- return session;
- }
- Data
- RtspSessionManager::findNewSessionId()
- {
- #ifdef NONRANDOM_SESSIONID
- Data result( mySessionIdList++ );
- return result;
- #else
- Data result;
- while(1)
- {
- result = randomGen.get();
- if( myRtspSessionMap.find( result ) == myRtspSessionMap.end() )
- {
- break;
- }
- }
- return result;
- #endif
- }
- /* Local Variables: */
- /* c-file-style: "stroustrup" */
- /* indent-tabs-mode: nil */
- /* c-file-offsets: ((access-label . -) (inclass . ++)) */
- /* c-basic-offset: 4 */
- /* End: */