audio_svr_cntxt.cpp
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上传日期:2007-06-06
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- /* ***** BEGIN LICENSE BLOCK *****
- * Version: RCSL 1.0/RPSL 1.0
- *
- * Portions Copyright (c) 1995-2003 RealNetworks, Inc. All Rights Reserved.
- *
- * The contents of this file, and the files included with this file, are
- * subject to the current version of the RealNetworks Public Source License
- * Version 1.0 (the "RPSL") available at
- * http://www.helixcommunity.org/content/rpsl unless you have licensed
- * the file under the RealNetworks Community Source License Version 1.0
- * (the "RCSL") available at http://www.helixcommunity.org/content/rcsl,
- * in which case the RCSL will apply. You may also obtain the license terms
- * directly from RealNetworks. You may not use this file except in
- * compliance with the RPSL or, if you have a valid RCSL with RealNetworks
- * applicable to this file, the RCSL. Please see the applicable RPSL or
- * RCSL for the rights, obligations and limitations governing use of the
- * contents of the file.
- *
- * This file is part of the Helix DNA Technology. RealNetworks is the
- * developer of the Original Code and owns the copyrights in the portions
- * it created.
- *
- * This file, and the files included with this file, is distributed and made
- * available on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
- * EXPRESS OR IMPLIED, AND REALNETWORKS HEREBY DISCLAIMS ALL SUCH WARRANTIES,
- * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, FITNESS
- * FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
- *
- * Technology Compatibility Kit Test Suite(s) Location:
- * http://www.helixcommunity.org/content/tck
- *
- * Contributor(s):
- *
- * ***** END LICENSE BLOCK ***** */
-
- /*
- * Description:
- *
- * This file contains the implimentation of the HXSymbianAudioServerContext
- * class. This class specialized bsThread and provides an exection
- * context for the Audio Server.
- *
- */
- #include "hlxclib/stdlib.h"
- #include "audio_svr_cntxt.h"
- #include "audio_svr.h"
- _LIT(kHXSymbianAudioServer, "HelixAudioServer");
- static const TInt kDefaultStack = 0x4000;
- //
- // HXSymbianAudioServerContext::ctor
- //
- HXSymbianAudioServerContext::HXSymbianAudioServerContext()
- : m_pServer(0),
- m_running(false),
- m_handleOpen(false)
- {}
- //
- // HXSymbianAudioServerContext::dtor
- //
- HXSymbianAudioServerContext::~HXSymbianAudioServerContext()
- {
- // make sure server is stopped
- Stop();
- m_handle.Close();
- m_startSem.Close();
- }
- //
- // HXSymbianAudioServerContext::Start
- //
- // This call wraps the normal thread startup call (Run()) in order to
- // wait on a startup semaphore. This ensures the server thread is
- // fully started before the calling thread proceeds.
- //
- void HXSymbianAudioServerContext::Start()
- {
- if (!m_running)
- {
- m_startSem.CreateLocal(0);
- this->Run();
- m_startSem.Wait();
- }
- }
- //
- // HXSymbianAudioServerContext::Stop
- //
- //
- //
- void HXSymbianAudioServerContext::Stop()
- {
- if (m_running)
- {
- m_startSem.Wait();
- m_running = false;
- }
- }
- bool HXSymbianAudioServerContext::Running()
- {
- return m_running;
- }
- TInt HXSymbianAudioServerContext::Run()
- {
- if (!m_running)
- {
- // close handle if previously opened
- if (m_handleOpen)
- m_handle.Close();
- if (KErrNone == m_handle.Create(kHXSymbianAudioServer,
- HXSymbianAudioServerContext::_Main,
- kDefaultStack,
- NULL, this, EOwnerThread))
- {
- m_handleOpen = true;
- m_handle.Resume();
- m_running = true;
- }
- }
- return m_running ? KErrNone : KErrGeneral;
- }
- //
- // HXSymbianAudioServerContext::Main
- //
- // This is the entry point for the new execution context. The call to
- // StartServerL() blocks until the server shuts down.
- //
- void* HXSymbianAudioServerContext::Main()
- {
- TRAPD(leaveCode, StartServerL());
- if (leaveCode != KErrNone)
- {
- User::Panic(_L("HXSymbianAudioServerContext"), leaveCode);
- }
- return (void*)0;
- }
- //
- // HXSymbianAudioServerContext::StartServerL
- //
- // Create and start the server object and active scheduler. This call
- // runs within the new execution context.
- //
- void HXSymbianAudioServerContext::StartServerL()
- {
- HBufC* pName = HXSymbianAudioServer::AllocServerName();
- if (pName)
- {
- m_pServer = new HXSymbianAudioServer;
- m_pServer->StartL(*pName);
- // signal waiter that server has started
- m_startSem.Signal();
- CActiveScheduler::Start();
-
- delete pName;
- }
- // signal waiter that server has exited
- m_startSem.Signal();
- delete m_pServer;
- m_pServer = 0;
- }
- TInt HXSymbianAudioServerContext::_Main (TAny* obj)
- {
- void* pstatus = 0;
- HXSymbianAudioServerContext* impl = (HXSymbianAudioServerContext*)obj;
- // increase the priority of the audio thread
- RThread().SetPriority(EPriorityMore);
- // allocate a cleanup trap for use on this thread
- CTrapCleanup* pCleanupTrap = CTrapCleanup::New();
- // install active scheduler
- CActiveScheduler::Install(new CActiveScheduler);
- pstatus = impl->Main();
- // fall out of main body
- //
- delete CActiveScheduler::Current();
- delete pCleanupTrap;
- // clean up memory allocated by stdlib functions
- CloseSTDLIB();
- // reset thread members in case this thread is restarted
- impl->m_running = false;
- return ((TInt)pstatus);
- }