StateMachine.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 StateMachine_cxx_version =
- "$Id: StateMachine.cxx,v 1.12 2001/05/15 20:26:08 bko Exp $";
- #include "StateMachine.hxx"
- #include "StateInit.hxx"
- #include "StateReadyPlay.hxx"
- #include "StateReadyRecord.hxx"
- #include "StatePlaying.hxx"
- #include "StateRecording.hxx"
- #include "StatePausePlay.hxx"
- #include "StatePauseRecord.hxx"
- #include "cpLog.h"
- // singleton object definition
- StateMachine* StateMachine::myInstance = 0;
- StateMachine&
- StateMachine::instance()
- {
- if( myInstance == 0 )
- {
- myInstance = new StateMachine();
- }
- return *myInstance;
- }
- StateMachine::StateMachine()
- {
- #if defined (_linux_)
- // register destroy function to delete singelton
- if( atexit( RtspSessionManager::destroy ) < 0 )
- {
- cpLog( LOG_ALERT, "Failed to register with atexit()" );
- };
- #endif
- addState( new StateInit );
- addState( new StateReadyPlay );
- addState( new StateReadyRecord );
- addState( new StatePlaying );
- addState( new StateRecording );
- addState( new StatePausePlay );
- addState( new StatePauseRecord );
- }
- StateMachine::~StateMachine()
- {
- }
- void
- StateMachine::destroy()
- {
- delete StateMachine::myInstance;
- StateMachine::myInstance = 0;
- }
- void
- StateMachine::addState( const Sptr<State> state )
- {
- //cpLog( LOG_DEBUG, "Insert %s state", state->name() );
- myStates.push_back( state );
- }
- Sptr<State>
- StateMachine::findState( const string stateName, const bool noprint )
- {
- if( !noprint )
- cpLog( LOG_DEBUG, "Next state: %s", stateName.c_str() );
- for( StateContainer::iterator itr = myStates.begin();
- itr != myStates.end(); itr++ )
- {
- if( stateName == (*itr)->name() )
- {
- return *itr;
- }
- }
- cpLog( LOG_DEBUG, "State %s not found", stateName.c_str() );
- return 0;
- }
- Sptr<State>
- StateMachine::process( const Sptr<State> currentState,
- const Sptr<StateEvent> event )
- {
- cpLog( LOG_DEBUG, "Start processing at state: %s", currentState->name() );
- Sptr<State> newState = currentState->process( event );
- return newState;
- }
- /* Local Variables: */
- /* c-file-style: "stroustrup" */
- /* indent-tabs-mode: nil */
- /* c-file-offsets: ((access-label . -) (inclass . ++)) */
- /* c-basic-offset: 4 */
- /* End: */