utilhandler.c

神龙卡开发原代码

			
			GrDestroyGC(gc_pal64);
			}
			break;
		
		case SHOW_RETURN_KEYDOWN:
		PwdSet_Quit:		
			RestorePopupRect(wPtr);
			MapSub1Handler(wPtr, NULL, 0);
			break;
			
		case SHOW_ZERO_KEYDOWN:	DrawPwdMasks(0x30); break;
		case SHOW_ONE_KEYDOWN: DrawPwdMasks(0x31); break;
		case SHOW_TWO_KEYDOWN: DrawPwdMasks(0x32); break;
		case SHOW_THREE_KEYDOWN: DrawPwdMasks(0x33); break;
		case SHOW_FOUR_KEYDOWN: DrawPwdMasks(0x34); break;
		case SHOW_FIVE_KEYDOWN: DrawPwdMasks(0x35); break;
		case SHOW_SIX_KEYDOWN: DrawPwdMasks(0x36); break;
		case SHOW_SEVEN_KEYDOWN: DrawPwdMasks(0x37); break;
		case SHOW_EIGHT_KEYDOWN: DrawPwdMasks(0x38); break;
		case SHOW_NINE_KEYDOWN: DrawPwdMasks(0x39); break;
		
		case SHOW_ENTER_KEYDOWN:
			if (pwdStr.pwd[0][0] == '@' || pwdStr.pwd[0][1] == '@' || pwdStr.pwd[0][2] == '@' || pwdStr.pwd[0][3] == '@') {
				OsdDrawPictureEx(wPtr, POPUP_X, POPUP_Y, POPUP_W, POPUP_H, "img/popup.png");
				GrText(wid,gc1,POPUP_HEADER_X,POPUP_HEADER_Y,"Set Password",-1,GR_TFASCII);
				GrText(wid,gc1,POPUP_TEXT_X,POPUP_LINE2_Y,"Password is not set!",-1,GR_TFASCII);
				wPtr->KbdHandler = OkCancelKeydownHandler;
				wPtr->KbdHandler_dptr = (DATA_POINTER) 1;
				break;
			}
				
			if (pwd == -1) {
				// password == verify ?
				if (pwdStr.pwd[0][0] == pwdStr.pwd[1][0] && pwdStr.pwd[0][1] == pwdStr.pwd[1][1] &&
					pwdStr.pwd[0][2] == pwdStr.pwd[1][2] &&	pwdStr.pwd[0][3] == pwdStr.pwd[1][3]) 
				{
						
					int pwdEnter = (pwdStr.pwd[0][0] - 0x30)*1000 + (pwdStr.pwd[0][1] - 0x30)*100 + (pwdStr.pwd[0][2] - 0x30)*10 + (pwdStr.pwd[0][3] - 0x30);
					iniSub1[PSWD_INDEX].selected = pwd = pwdEnter;		// Saved in SaveSettings()
					goto PwdSet_Quit;
				}
				else {
				PwdSet_NotVerified:
					OsdDrawPictureEx(wPtr, POPUP_X, POPUP_Y, POPUP_W, POPUP_H, "img/popup.png");
					GrText(wid,gc1,POPUP_HEADER_X,POPUP_HEADER_Y,"Set Password",-1,GR_TFASCII);
					GrText(wid,gc1,POPUP_TEXT_X,POPUP_LINE2_Y,"Password is not confirmed!",-1,GR_TFASCII);
					wPtr->KbdHandler = OkCancelKeydownHandler;
					wPtr->KbdHandler_dptr = (DATA_POINTER) 1;
				}
			}
			else {
				char tmp[4];
		
				itoa(pwd,tmp,4);
				// entered password == current pwd?
				if (pwdStr.pwd[0][0] == tmp[0] && pwdStr.pwd[0][1] == tmp[1] &&
					pwdStr.pwd[0][2] == tmp[2] && pwdStr.pwd[0][3] == tmp[3]) 
				{

					// new password == verify ?
					if (pwdStr.pwd[1][0] == pwdStr.pwd[2][0] && pwdStr.pwd[1][1] == pwdStr.pwd[2][1] &&
						pwdStr.pwd[1][2] == pwdStr.pwd[2][2] && pwdStr.pwd[1][3] == pwdStr.pwd[2][3]) 
					{
						
						int pwdEnter = (pwdStr.pwd[1][0] - 0x30)*1000 + (pwdStr.pwd[1][1] - 0x30)*100 + (pwdStr.pwd[1][2] - 0x30)*10 + (pwdStr.pwd[1][3] - 0x30);
						iniSub1[PSWD_INDEX].selected = pwd = pwdEnter;		// Saved in SaveSettings()
						goto PwdSet_Quit;
					}
					else
						goto PwdSet_NotVerified;
				}
				else {
				//	password is incorrect
					OsdDrawPictureEx(wPtr, POPUP_X, POPUP_Y, POPUP_W, POPUP_H, "img/popup.png");
					GrText(wid,gc1,POPUP_HEADER_X,POPUP_HEADER_Y,"Password Entry",-1,GR_TFASCII);
					GrText(wid,gc1,POPUP_TEXT_X,POPUP_LINE2_Y,"Password is not correct!",-1,GR_TFASCII);
					wPtr->KbdHandler = OkCancelKeydownHandler;
					wPtr->KbdHandler_dptr = (DATA_POINTER) 1;
				}
			}
		
			break;
			
		case SHOW_POWER_KEYDOWN:
		case SHOW_OPEN_KEYDOWN:
		case SHOW_SETUP_KEYDOWN:
			//Save all parameters
			SaveSettings(wPtr);
			RestorePopupRect(wPtr);
			MapMainWindow(wPtr, (DATA_POINTER)GR_TRUE);
			break;
		
	}
	return;
}

void 
MapPwdSetHandler(OSD_WINDOW *wPtr, DATA_POINTER ptr)
{
	int i;
	
	gc1 = wPtr->gc;
	gc_pal0 = wPtr->gc_pal0;
	gc_pal6 = wPtr->gc_pal6;
	gc_pal244 = wPtr->gc_pal244;
	wid = wPtr->wid;
	
	wPtr->KbdHandler = PwdSetKeydownHandler;
	wPtr->KbdHandler_dptr = ptr;
	
	//Retrieve pswd
	pwd = iniSub1[PSWD_INDEX].selected;
	
	//Init strings
	for (i=0; i<3; i++) {
		pwdStr.mask[i][0] = pwdStr.mask[i][1] = pwdStr.mask[i][2] = pwdStr.mask[i][3] = '#';
	}
	
	pwdStr.pwd[0][0] = pwdStr.pwd[0][1] = pwdStr.pwd[0][2] = pwdStr.pwd[0][3] = '@';
	pwdStr.pwd[1][0] = pwdStr.pwd[1][1] = pwdStr.pwd[1][2] = pwdStr.pwd[1][3] = '$';
	pwdStr.pwd[3][0] = pwdStr.pwd[3][1] = pwdStr.pwd[3][2] = pwdStr.pwd[3][3] = '&';
		
	curId = 0; 	curIdMax = 3;  
	curY = POPUP_LINE1_Y; curRow = 0;
	
	SavePopupRect(wPtr);
	OsdDrawPictureEx(wPtr, POPUP_X, POPUP_Y, POPUP_W, POPUP_H, "img/popup.png");
	GrText(wid,gc1,POPUP_HEADER_X,POPUP_HEADER_Y,"Set Password",-1,GR_TFASCII);
	GrText(wid,gc1,POPUP_TEXT_X,POPUP_LINE4_Y+10,"Press Enter to set, Return to quit",-1,GR_TFASCII);
	GrText(wid,gc1,POPUP_TEXT_X,POPUP_LINE5_Y+10,"or Cancel to re-enter.",-1,GR_TFASCII);
	
	if (pwd == -1) {		
		GrText(wid,gc1,POPUP_TEXT_X,POPUP_LINE1_Y,"New:",-1,GR_TFASCII);
		GrText(wid,gc1,POPUP_TEXT_X,POPUP_LINE2_Y,"Confirm:",-1,GR_TFASCII);
		curYMax = POPUP_LINE2_Y;
	}
	else {		
		GrText(wid,gc1,POPUP_TEXT_X,POPUP_LINE1_Y,"Current:",-1,GR_TFASCII);		
		GrText(wid,gc1,POPUP_TEXT_X,POPUP_LINE2_Y,"New:",-1,GR_TFASCII);
		GrText(wid,gc1,POPUP_TEXT_X,POPUP_LINE3_Y,"Confirm:",-1,GR_TFASCII);
		curYMax = POPUP_LINE3_Y;
	}
	
	GrText(wid,gc_pal244,POPUP_DATA_X_PWD,curY,&pwdStr.mask[0][0],1,GR_TFASCII);
	for (i=1; i<4; i++)
		GrText(wid,gc1,POPUP_DATA_X_PWD+(i*PWD_DIGIT_WIDTH),POPUP_LINE1_Y,&pwdStr.mask[0][i],1,GR_TFASCII);
	
	for (i=0; i<4; i++)
		GrText(wid,gc1,POPUP_DATA_X_PWD+(i*PWD_DIGIT_WIDTH),POPUP_LINE2_Y,&pwdStr.mask[1][i],1,GR_TFASCII);
	
	//Password set before, so we want to confirm
	if (pwd != -1)
		for (i=0; i<4; i++)
			GrText(wid,gc1,POPUP_DATA_X_PWD+(i*PWD_DIGIT_WIDTH),POPUP_LINE3_Y,&pwdStr.mask[2][i],1,GR_TFASCII);
	
	return;
}

//----------------------
// Messages stuff
//
void
MapMsgHandler(OSD_WINDOW *wPtr, DATA_POINTER ptr)
{
	
	gc1 = wPtr->gc;
	wid = wPtr->wid;
	
	SavePopupRect(wPtr);
	OsdDrawPictureEx(wPtr, POPUP_X, POPUP_Y, POPUP_W, POPUP_H, "img/popup.png");	
	GrText(wid,gc1,POPUP_HEADER_X,POPUP_HEADER_Y,"Message",-1,GR_TFASCII);
	switch ((int)ptr) {
	case SHOW_ABORT_MSG:
		GrText(wid,gc1,POPUP_TEXT_X,POPUP_LINE2_Y,"Unrecoverable Disc Error.",-1,GR_TFASCII);
		GrText(wid,gc1,POPUP_TEXT_X,POPUP_LINE3_Y,"Abort Playback!",-1,GR_TFASCII);
		break;		
	case SHOW_INVALID_REGION_MSG:
		GrText(wid,gc1,POPUP_TEXT_X,POPUP_LINE2_Y,"Invalid Region Disc.",-1,GR_TFASCII);
		GrText(wid,gc1,POPUP_TEXT_X,POPUP_LINE3_Y,"Abort Playback!",-1,GR_TFASCII);
		break;	
	case SHOW_BOOK_MARK_MSG:
		GrText(wid,gc1,POPUP_TEXT_X,POPUP_LINE1_Y,"When playing next time, Disc" ,-1,GR_TFASCII);
		GrText(wid,gc1,POPUP_TEXT_X,POPUP_LINE2_Y,"will restart from the current",-1,GR_TFASCII);
		GrText(wid,gc1,POPUP_TEXT_X,POPUP_LINE3_Y,"stop position.",-1,GR_TFASCII);
		GrText(wid,gc1,POPUP_TEXT_X,POPUP_LINE4_Y,"To start from the beginning",-1,GR_TFASCII);
		GrText(wid,gc1,POPUP_TEXT_X,POPUP_LINE5_Y,"press [Stop] again.",-1,GR_TFASCII);
		break;
	case SHOW_CANNOT_PLAYBACK_FROM_CURRENT_POSITION_MSG:
		GrText(wid,gc1,POPUP_TEXT_X,POPUP_LINE2_Y,"Playback cannot be resumed",-1,GR_TFASCII);
		GrText(wid,gc1,POPUP_TEXT_X,POPUP_LINE3_Y,"from the current position.",-1,GR_TFASCII);
		break;
	case SHOW_PARENTAL_LEVEL_MSG:
		GrText(wid,gc1,POPUP_TEXT_X,POPUP_LINE2_Y,"The current parental level",-1,GR_TFASCII);
		GrText(wid,gc1,POPUP_TEXT_X,POPUP_LINE3_Y,"prohibits playback of this DVD.",-1,GR_TFASCII);		
		break;
	case SHOW_CANNOT_PLAYBACK_AT_CURRENT_RESOLUTION_MSG:
		GrText(wid,gc1,POPUP_TEXT_X,POPUP_LINE1_Y,"Playback cannot be resumed",-1,GR_TFASCII);
		GrText(wid,gc1,POPUP_TEXT_X,POPUP_LINE2_Y,"for current screen resolution.",-1,GR_TFASCII);
		GrText(wid,gc1,POPUP_TEXT_X,POPUP_LINE3_Y,"Please change to 480p.",-1,GR_TFASCII);
		break;
	case SHOW_CANNOT_DISPLAY_JPEG_FILE_MSG:
		GrText(wid,gc1,POPUP_TEXT_X,POPUP_LINE2_Y,"Cannot display current JPEG file.",-1,GR_TFASCII);
		break;	
	case SHOW_BAD_AUDIO_MSG:
		GrText(wid,gc1,POPUP_TEXT_X,POPUP_LINE2_Y,"Cannot playback audio track.",-1,GR_TFASCII);
		GrText(wid,gc1,POPUP_TEXT_X,POPUP_LINE3_Y,"Audio format is not supported.",-1,GR_TFASCII);
		break;
#if 0	
	case SHOW_BAD_VIDEO_MSG:
		GrText(wid,gc1,POPUP_TEXT_X,POPUP_LINE2_Y,"Cannot playback video track.",-1,GR_TFASCII);
		GrText(wid,gc1,POPUP_TEXT_X,POPUP_LINE3_Y,"Video format is not supported.",-1,GR_TFASCII);
		break;
	case SHOW_BAD_MPEG4_MSG:
		GrText(wid,gc1,POPUP_TEXT_X,POPUP_LINE1_Y,"Cannot playback video track.",-1,GR_TFASCII);
		GrText(wid,gc1,POPUP_TEXT_X,POPUP_LINE2_Y,"Video format is Mpeg4 with GMC",-1,GR_TFASCII);
		GrText(wid,gc1,POPUP_TEXT_X,POPUP_LINE3_Y,"and/or QPel.",-1,GR_TFASCII);
		break;
#endif	
	case SHOW_BAD_FORMAT_MSG:
		GrText(wid,gc1,POPUP_TEXT_X,POPUP_LINE1_Y,"Cannot playback file.",-1,GR_TFASCII);
		GrText(wid,gc1,POPUP_TEXT_X,POPUP_LINE2_Y,"Video/Audio format is not",-1,GR_TFASCII);
		GrText(wid,gc1,POPUP_TEXT_X,POPUP_LINE3_Y,"supported.",-1,GR_TFASCII);
		break;
	}
	return;
}

void ClearMsg(OSD_WINDOW *wPtr)
{
	alarm(0);
	RestorePopupRect(wPtr);
	//GrFillRect(wPtr->wid,wPtr->gc_pal0,POPUP_X,POPUP_Y,POPUP_W,POPUP_H);
}

//-------------------------
// DVI Setting stuff
//
static GR_PIXELVAL *dvicustomPixels;
void DVIUpdateDigit(int prevId, int prevRow, int prevCol, int prevX, int prevY)
{
	GR_SIZE retwidth, retheight, retbase;
	
	//Clear
	GrGetGCTextSize(gc1,DVISettings[prevRow][prevCol].val,prevId,GR_TFASCII, &retwidth, &retheight, &retbase);
	GrText(wid,gc1,prevX+retwidth,prevY,&DVISettings[prevRow][prevCol].val[prevId],1,GR_TFASCII);
	
	//Update
	GrGetGCTextSize(gc_pal244,DVISettings[curRow][curCol].val,curId,GR_TFASCII, &retwidth, &retheight, &retbase);
	GrText(wid,gc_pal244,curX+retwidth,curY,&DVISettings[curRow][curCol].val[curId],1,GR_TFASCII);
	
	return;
}

void
DVISettingKeydownHandler(OSD_WINDOW *wPtr,DATA_POINTER ptr)
{
	GR_EVENT *event;
	char digit;
	int prevId,prevRow,prevCol,prevX,prevY;
	SUB_ITEM *pSub1 = (SUB_ITEM *)ptr;

    event=wPtr->lastevent;
	switch (event->keystroke.ch) {
	
	case SHOW_LEFT_KEYDOWN:			
		prevId = curId; prevRow = curRow; prevCol = curCol; prevX = curX; prevY = curY;
		if (curId <= 0) {
			if (curCol == 1) {
				curCol = 0;
				curX = (curRow == 0)?H_FREQ_VAL_X:CUSTOM_DVI_VAL1_X;
				curIdMax = (curRow == 0)?4:3;
				curId = curIdMax;
			}
			//else
			//	curId = curIdMax;
			  
		} else
			curId--;
		
		DVIUpdateDigit(prevId,prevRow,prevCol,prevX,prevY);
		break;
		
	case SHOW_RIGHT_KEYDOWN:
		prevId = curId; prevRow = curRow; prevCol = curCol; prevX = curX; prevY = curY;
		if (curId >= curIdMax) {
			if (curCol == 0) {
				curCol = 1;
				curX = CUSTOM_DVI_VAL2_X;
				curIdMax = 3;
				curId = 0;
			}
			//else 
			//	curId = 0;
		} else
			curId++;
		
		DVIUpdateDigit(prevId,prevRow,prevCol,prevX,prevY);
		
		break;
		
	case SHOW_ZERO_KEYDOWN:  digit = 0x30; goto DVI_DrawDigit;
	case SHOW_ONE_KEYDOWN:   digit = 0x31; goto DVI_DrawDigit;
	case SHOW_TWO_KEYDOWN:	 digit = 0x32; goto DVI_DrawDigit;
	case SHOW_THREE_KEYDOWN: digit = 0x33; goto DVI_DrawDigit;
	case SHOW_FOUR_KEYDOWN:	 digit = 0x34; goto DVI_DrawDigit;
	case SHOW_FIVE_KEYDOWN:  digit = 0x35; goto DVI_DrawDigit;
	case SHOW_SIX_KEYDOWN:   digit = 0x36; goto DVI_DrawDigit;
	case SHOW_SEVEN_KEYDOWN: digit = 0x37; goto DVI_DrawDigit;
	case SHOW_EIGHT_KEYDOWN: digit = 0x38; goto DVI_DrawDigit;
	case SHOW_NINE_KEYDOWN:  digit = 0x39;
	
	DVI_DrawDigit:
		if (curId == curIdMax)
			DrawDigit(DVISettings[curRow][curCol].val, digit, 0);
		else
			DrawDigit(DVISettings[curRow][curCol].val, digit, 1);
		break;
	//case SHOW_CANCEL_KEYDOWN:
	//	break;
		
	case SHOW_UP_KEYDOWN:
		if (curRow > 0) {
			prevId = curId; prevRow = curRow; prevCol = curCol; prevX = curX; prevY = curY;
			curRow--;
			curY = DVISettings[curRow][curCol].y;
			if (curRow == 0 && curCol == 0) {
				curX = H_FREQ_VAL_X;
				curIdMax = 4;
			}
			else {
				curX = (curCol == 0)?CUSTOM_DVI_VAL1_X:CUSTOM_DVI_VAL2_X;
				curIdMax = 3;
			}
			curId = 0;			
			DVIUpdateDigit(prevId,prevRow,prevCol,prevX,prevY);
		}
		break;
		
	case SHOW_DOWN_KEYDOWN:
		if (curRow < DVI_SETTING_ROWS - 1) {
			prevId = curId; prevRow = curRow; prevCol = curCol; prevX = curX; prevY = curY;
			curRow++;
			curY = DVISettings[curRow][curCol].y;
			curX = (curCol == 0)?CUSTOM_DVI_VAL1_X:CUSTOM_DVI_VAL2_X;
			curId = 0;
			curIdMax = 3;
			DVIUpdateDigit(prevId,prevRow,prevCol,prevX,prevY);
		}
		break;
	// Quit
	case SHOW_SETUP_KEYDOWN:
		//Save all parameters
		pSub1->selected = DVI_OUT_CUSTOM;
		SaveSettings(wPtr);
		// fall through to quit
	
	case SHOW_POWER_KEYDOWN:
	case SHOW_OPEN_KEYDOWN:	
		RestoreRect(wPtr, &dvicustomPixels, CUSTOM_DVI_TEXT1_X-30, CUSTOM_DVI_HEADER_Y-40, 580, 310);
		MapMainWindow(wPtr, (DATA_POINTER)GR_TRUE);
		break;			
		
	case SHOW_ENTER_KEYDOWN:
		pSub1->selected = DVI_OUT_CUSTOM;
		SaveSettings(wPtr);
	case SHOW_RETURN_KEYDOWN:	
		GrClearWindow(wid, GR_FALSE);
		RestoreRect(wPtr, &dvicustomPixels, CUSTOM_DVI_TEXT1_X-30, CUSTOM_DVI_HEADER_Y-40, 580, 310);
		MapSub1Handler(wPtr, NULL, 0);
		break;
	}
	return;
	
}

void 
MapDVISettingHandler(OSD_WINDOW *wPtr, DATA_POINTER ptr)
{
	int i;
	
	gc1 = wPtr->gc;
	gc_pal0 = wPtr->gc_pal0;
	gc_pal6 = wPtr->gc_pal6;
	gc_pal244 = wPtr->gc_pal244;
	wid = wPtr->wid;	
	
	wPtr->KbdHandler = DVISettingKeydownHandler;
	wPtr->KbdHandler_dptr = ptr;
	
	SaveRect(wPtr, &dvicustomPixels, CUSTOM_DVI_TEXT1_X-30, CUSTOM_DVI_HEADER_Y-40, 580, 310, MWPALINDEX(6));
	
	DrawUpperLeft(wid, gc_pal0, CUSTOM_DVI_TEXT1_X-30,CUSTOM_DVI_HEADER_Y-40);
	DrawLowerLeft(wid, gc_pal0, CUSTOM_DVI_TEXT1_X-30,CUSTOM_DVI_HEADER_Y-40+310-1);
	DrawLowerRight(wid, gc_pal0, CUSTOM_DVI_TEXT1_X-30+580-1,CUSTOM_DVI_HEADER_Y-40+310-1);
	DrawUpperRight(wid, gc_pal0, CUSTOM_DVI_TEXT1_X-30+580-1,CUSTOM_DVI_HEADER_Y-40);
	
	GrText(wid,gc1,CUSTOM_DVI_TEXT1_X,CUSTOM_DVI_HEADER_Y,"DVI Custom Settings:",-1,GR_TFASCII);
	GrText(wid,gc1,CUSTOM_DVI_TEXT1_X,CUSTOM_DVI_TEXT_Y+(DVI_SETTING_ROWS*YOFF),"~~ Press Enter to set, Return to quit without setting",-1,GR_TFASCII);

	GrText(wid,gc1,CUSTOM_DVI_TEXT1_X,DVISettings[0][0].y,DVISettings[0][0].text,-1,GR_TFASCII);
	GrText(wid,gc1,H_FREQ_VAL_X,DVISettings[0][0].y,DVISettings[0][0].val,-1,GR_TFASCII);
	GrText(wid,gc1,CUSTOM_DVI_TEXT2_X,DVISettings[0][1].y,DVISettings[0][1].text,-1,GR_TFASCII);
	GrText(wid,gc1,CUSTOM_DVI_VAL2_X,DVISettings[0][1].y,DVISettings[0][1].val,-1,GR_TFASCII);
	for (i=1; i<DVI_SETTING_ROWS; i++) {
		GrText(wid,gc1,CUSTOM_DVI_TEXT1_X,DVISettings[i][0].y,DVISettings[i][0].text,-1,GR_TFASCII);
		GrText(wid,gc1,CUSTOM_DVI_VAL1_X,DVISettings[i][0].y,DVISettings[i][0].val,-1,GR_TFASCII);
		GrText(wid,gc1,CUSTOM_DVI_TEXT2_X,DVISettings[i][1].y,DVISettings[i][1].text,-1,GR_TFASCII);
		GrText(wid,gc1,CUSTOM_DVI_VAL2_X,DVISettings[i][1].y,DVISettings[i][1].val,-1,GR_TFASCII);	
	}
		
	GrText(wid,gc_pal244,H_FREQ_VAL_X,DVISettings[0][0].y,&DVISettings[0][0].val[0],1,GR_TFASCII);
	
	curRow = curCol = 0; 
	curId = 0; 		
	curIdMax = 4;
	curX = H_FREQ_VAL_X; 	
	curY = CUSTOM_DVI_TEXT_Y;
	
	return;
}

//------------------------------------------------------------------
// Convert positive integer to ascii string with '0' padded in front 
// (ie: i=1, size=2 -> buffer = '02')
// buf = ascii string for i; must be at least as size
// size = number of chars buf holds
// 
int itoa(int i, char *buf, int size)
{
	char *pos = buf + size - 1;
	unsigned int u;

	if (buf == NULL || size == 0)
		return -1;
	
	u = i;
	while (pos >= buf) {
		*pos-- = '0' + (u % 10);
		u /= 10;
	}
	
	return 0;
}


#if 0
/*
 * Sleep a while to avoid using too much CPU time.
 */
void do_idle()
{
	struct timespec idletime;
	idletime.tv_sec = 0;
	idletime.tv_nsec = 100000;
	nanosleep(&idletime, NULL);
}
#endif