jpgmisc.c

SAMSUNG S3C6410 CPU BSP for winmobile6

/*
 * Project Name JPEG DRIVER IN WINCE
 * Copyright  2007 Samsung Electronics Co, Ltd. All Rights Reserved. 
 *
 * This software is the confidential and proprietary information
 * of Samsung Electronics  ("Confidential Information").   
 * you shall not disclose such Confidential Information and shall use
 * it only in accordance with the terms of the license agreement
 * you entered into with Samsung Electronics 
 *
 * This file implements JPEG driver.
 *
 * @name JPEG DRIVER MODULE Module (JPGMisc.c)
 * @author Jiyoung Shin ([e-mail])
 * @date 28-03-07
 */
#include <windows.h>
#include <pmplatform.h>
//#define DEBUG	1

static HANDLE	hMutex;

/*----------------------------------------------------------------------------
*Function: CreateJPGmutex
*Implementation Notes: Create Mutex handle 
-----------------------------------------------------------------------------*/
HANDLE CreateJPGmutex(void)
{

	hMutex = CreateMutex( NULL,                       // default security attributes
						  FALSE,                      // initially not owned
						  NULL);                      // unnamed mutex
	
	return hMutex;
}

/*----------------------------------------------------------------------------
*Function: LockJPGMutex
*Implementation Notes: lock mutex 
-----------------------------------------------------------------------------*/
DWORD LockJPGMutex(void)
{
	DWORD				Status;
        

    Status = WaitForSingleObject(hMutex, INFINITE);
    if(Status == WAIT_OBJECT_0) 
	{
		Status = TRUE;
    } 
	else 
	{
        Status = GetLastError();
        RETAILMSG(1,(TEXT("DD::MUTEX LOCK ERROR : %d\r\n"),Status));
		Status = FALSE;
    }
    
      
    return Status;
}

/*----------------------------------------------------------------------------
*Function: UnlockJPGMutex
*Implementation Notes: unlock mutex
-----------------------------------------------------------------------------*/
DWORD UnlockJPGMutex(void)
{
	DWORD				Status;
   
    Status = ReleaseMutex(hMutex);
    if(Status != TRUE) 
	{
        Status = GetLastError();
		RETAILMSG(1,(TEXT("DD::MUTEX UNLOCK ERROR : %d\r\n"),Status));
        
    }
	      
    return Status;
}

/*----------------------------------------------------------------------------
*Function: DeleteJPGMutex
*Implementation Notes: delete mutex handle 
-----------------------------------------------------------------------------*/
void DeleteJPGMutex(void)
{
	if (hMutex == NULL)
		return;

	CloseHandle(hMutex);
}



/*----------------------------------------------------------------------------
*Function: printD

*Parameters: 		fmt		:
*Implementation Notes: Debug print
-----------------------------------------------------------------------------*/
void printD(char* fmt, ...) 
{
#ifdef DEBUG
    char str[512];

    vsprintf(str, fmt, (char *)(&fmt+1));
    printf(str);

#endif
}