mmdebug.cpp

神龙卡 SDK_84xx_DShow_145_02.zip 这个是 windows 上二个是linux

#include "pch.h"
#include "mmdebug.h"

FILE* g_pLogfile = NULL;
BOOL g_bFirstTime = TRUE;

CRITICAL_SECTION crFile;
BOOL g_bInitCS = FALSE;

void Mmdprintf(int MmDebugLevel, char* szFormat, ...)
{
#ifdef _DEBUG
	char buf[256];
	char tmpbuf[128];
   time_t ltime;
	struct tm now;
	long fileSize = 0;

	va_list argptr;				// Used by va_start
	va_start(argptr, szFormat);	// Multiple parameter start
	vsprintf(tmpbuf, szFormat, argptr);
	va_end(argptr);

   time(&ltime);
	now = *localtime(&ltime);
	sprintf(buf, "%d/%d %d:%d:%d\t%s\n", now.tm_mon+1, now.tm_mday,
		now.tm_hour, now.tm_min, now.tm_sec, tmpbuf);

	if (MmDebugLevel & MmDebugLevelLog)
	{
		MmOpenDebugLogfile();
		if (g_pLogfile)
		{
			fileSize = ftell(g_pLogfile);
			if ((fileSize / 1024) / 1024 >= 10)	// max is 10MB
				rewind(g_pLogfile);
			fwrite (buf, sizeof(char), strlen(buf), g_pLogfile);
		}
		MmCloseDebugLogfile();
	}
	
	if (MmDebugLevel & MmDebugLevelTrace)
		#ifdef _WINDOWS
				OutputDebugString (buf);
		#else
				printf("%s", buf);
		#endif // _WINDOWS
#endif
}

void MmCloseDebugLogfile()
{
	if (g_pLogfile != NULL)
		fclose (g_pLogfile);
	g_pLogfile = NULL;
	OSLeaveCriticalSection(&crFile);
}

void MmOpenDebugLogfile()
{
	if (!g_bInitCS)
	{
		g_bInitCS = TRUE;
		OSInitializeCriticalSection(&crFile);
	}
	OSEnterCriticalSection(&crFile);
	if (g_pLogfile == NULL)
	{
		if (g_bFirstTime)
		{
			g_bFirstTime = FALSE;
			g_pLogfile = fopen("mmlog.txt", "w+");
		}
		else
			g_pLogfile = fopen("mmlog.txt", "a+");
	}
}