os_divers.c

this the mpeg4 library which includes VC6 and eVC3 project file.

/*
 *			GPAC - MPEG-4 Systems C Development Kit
 *
 *			Copyright (c) Jean Le Feuvre 2000-2003 
 *					All rights reserved
 *
 *  This file is part of GPAC / common tools sub-project
 *
 *  GPAC is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 2, or (at your option)
 *  any later version.
 *   
 *  GPAC is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *   
 *  You should have received a copy of the GNU General Public License
 *  along with GNU Make; see the file COPYING.  If not, write to
 *  the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. 
 *
 */


#include <gpac/m4_tools.h>


#ifndef M4_READ_ONLY
#error "WinCE version shall be read-only"
#endif

void CE_Assert(u32 valid)
{
	if (!valid) {
		MessageBox(NULL, _T("ASSERT FAILED"), _T("Fatal Error"), MB_OK);
	}
}

u32 CE_TimeGetTime()
{
	return GetTickCount();
}


/*
	Conversion code for WinCE from pthreads WinCE
	(FILETIME in Win32 is from jan 1, 1601)
	time between jan 1, 1601 and jan 1, 1970 in units of 100 nanoseconds 
*/
#define TIMESPEC_TO_FILETIME_OFFSET (((LONGLONG)27111902 << 32) + (LONGLONG)3577643008)


int ce_gettimeofday(struct timeval *tp, void *tz)
{
	FILETIME ft;
	SYSTEMTIME st;
	s32 val;

	GetSystemTime(&st);
    SystemTimeToFileTime(&st, &ft);

	val = (s32) ((*(LONGLONG *) &ft - TIMESPEC_TO_FILETIME_OFFSET) / 10000000);
	tp->tv_sec = (u32) val;
	val = (s32 ) ((*(LONGLONG *) &ft - TIMESPEC_TO_FILETIME_OFFSET - ((LONGLONG) val * (LONGLONG) 10000000)) * 100);
	tp->tv_usec = val;
	return 0;
}

void M4_GetUTCTimeSince1970(u32 *sec, u32 *msec)
{
	struct timeval tv;
	ce_gettimeofday(&tv, NULL);
	*sec = tv.tv_sec;
	*msec = tv.tv_usec/1000;
}

void CE_WideToChar(unsigned short *w_str, char *str)
{
	WideCharToMultiByte(CP_ACP, 0, w_str, -1, str, MAX_FILE_PATH, NULL, NULL);
}

void CE_CharToWide(char *str, unsigned short *w_str)
{
	MultiByteToWideChar(CP_ACP, 0, str, -1, w_str, MAX_FILE_PATH);
}


//we assume we cannot have >4G files on winCE
Bool M4IsLargeFile(char *path)
{
	return 0;
}