casyntim.cpp

著名的 helix realplayer 基于手机 symbian 系统的 播放器全套源代码

/* ***** BEGIN LICENSE BLOCK ***** 
 * Version: RCSL 1.0/RPSL 1.0 
 *  
 * Portions Copyright (c) 1995-2002 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 ***** */ 

#include "hxtypes.h"
#include "hxresult.h"
#include "hxtick.h"

#include "timeval.h"
#include "pq.h"
#include "hxthread.h"

#include "hxcom.h"
#include "hxengin.h"
#include "hxsched.h"

#include "hxmsgs.h"
#include "casyntim.h"

#include "hxheap.h"
#ifdef _DEBUG
#undef HX_THIS_FILE		
static const char HX_THIS_FILE[] = __FILE__;
#endif

//XXXgfw when we do thread priorities on linux we will change this.
#ifdef _UNIX
#define THREAD_PRIORITY_HIGHEST 1
#define THREAD_PRIORITY_NORMAL  0
#elif defined (_CARBON)
#define THREAD_PRIORITY_HIGHEST 10000
#define THREAD_PRIORITY_NORMAL 100
#elif defined(_SYMBIAN)
#include <e32std.h>
#define THREAD_PRIORITY_HIGHEST EPriorityMuchMore
#define THREAD_PRIORITY_NORMAL EPriorityNormal
#elif defined(_OPENWAVE)
#define THREAD_PRIORITY_HIGHEST 1
#define THREAD_PRIORITY_NORMAL  0
#endif

void* ThreadRoutine2(void * pArg);

CAsyncTimer::CAsyncTimer(HXScheduler* pScheduler)
{
    m_pScheduler    = pScheduler;
    m_ulStartTime   = 0;
    m_ulGranularity = 100;
    m_pThread	    = NULL;
    m_pQuitEvent    = NULL;
    m_uPlayingStateCount = 0;
}

CAsyncTimer::~CAsyncTimer()
{
    StopTimer();
}

//  timegettime

HX_RESULT CAsyncTimer::StartTimer(void)
{
    HX_RESULT theErr = HXR_OK;

#ifdef THREADS_SUPPORTED
    theErr = HXThread::MakeThread(m_pThread);
    HXEvent::MakeEvent(m_pQuitEvent, NULL);
#else
    theErr = HXThread::MakeStubThread(m_pThread);
    HXEvent::MakeStubEvent(m_pQuitEvent, NULL);
#endif

    if (!theErr)
    {
	theErr = m_pThread->CreateThread(ThreadRoutine2, (void*) this);
    }

    return theErr;
}

HX_RESULT CAsyncTimer::StopTimer(void)
{
    if (m_pThread)
    {
	HXThreadMessage msg(HXMSG_QUIT, NULL, NULL);
	if (m_pThread->PostMessage(&msg) == HXR_OK)
	{
	    m_pQuitEvent->Wait(ALLFS);
	}
	m_pThread->Exit(0);
	delete m_pThread;
	m_pThread = 0;
    }

    if (m_pQuitEvent)
    {
	delete m_pQuitEvent;
	m_pQuitEvent = 0;
    }

    return HXR_OK;
}

BOOL CAsyncTimer::InTimerThread(void)
{
    BOOL bRet = FALSE;

    if (m_pThread)
    {
	UINT32 ulThreadId = 0;

	m_pThread->GetThreadId(ulThreadId);

	if (ulThreadId == m_pThread->GetCurrentThreadID())
	{
	    bRet = TRUE;
	}
    }

    return bRet;
}

void CAsyncTimer::NotifyPlayState(BOOL bInPlayingState)
{
    HX_ASSERT(bInPlayingState || (m_uPlayingStateCount > 0));

    if (bInPlayingState)
    {
	m_uPlayingStateCount++;
	HX_ASSERT(m_pThread != NULL);
	if (m_uPlayingStateCount == 1 && m_pThread)
	{
	    m_pThread->SetPriority(THREAD_PRIORITY_HIGHEST);
	}
    }
    else if (m_uPlayingStateCount > 0)
    {
	m_uPlayingStateCount--;
	HX_ASSERT(m_pThread != NULL);
	if (m_uPlayingStateCount == 0 && m_pThread)
	{
	    m_pThread->SetPriority(THREAD_PRIORITY_NORMAL);
	}
    }
}

void* ThreadRoutine2(void * pArg)
{
    CAsyncTimer* pAsyncTimer = (CAsyncTimer*) pArg;
    ULONG32 ulSleepTime = pAsyncTimer->m_ulGranularity;

    ULONG32 ulStartTime = HX_GET_TICKCOUNT();

    HXThread*	    pThread = pAsyncTimer->m_pThread;
    HXThreadMessage msg;
    BOOL	    bDone   = FALSE;
    UINT32	    ulLastTimerCallback = ulStartTime;

    UINT32 ulTimerId = HXAsyncTimer::SetTimer(ulSleepTime, pThread );
    
    while (!bDone && pThread->GetMessage(&msg, 0,0) == HXR_OK)
    {
	switch (msg.m_ulMessage)
	{
	    case HXMSG_ASYNC_TIMER: 
		{
		    ULONG32 ulCurrentTime = HX_GET_TICKCOUNT();
		    if (CALCULATE_ELAPSED_TICKS(ulLastTimerCallback, ulCurrentTime) 
			    >= ulSleepTime)
		    {
			ulLastTimerCallback = ulCurrentTime;
			pAsyncTimer->m_pScheduler->OnTimeSync(TRUE);
		    }
		}
		break;
	    case HXMSG_QUIT:
		bDone	= TRUE;
		break;
	    default:
		pThread->DispatchMessage(&msg);
		break;
	}
    }

    HXAsyncTimer::KillTimer(ulTimerId);

    pAsyncTimer->m_pQuitEvent->SignalEvent();

    return (void*) 0;
}