//bldr Scan JasmineUtil jasmc jasswat loadram

get "bcpl.head"

//incoming procedures
external 
 [	JasmineInit
	JasmineSetDelay
	JasmineSetResolution
	JasmineSetTime
	JasmineSetReadMode	//readOnly=1, readAndStep=2, readStepAndDelay=3
	JasmineLoadRam
	JasmineScanInit
	JasmineScanClose
	JasmineReadLine
	JasmineStep
	JasmineSetWindow	//(xstart,xlen)	in full resolution coords (250 microns)
	JasmineCoord
	JasmineNewPage
	JasmineEject
	JasmineMotorOff

	//from JasmineCalibrate
	JasmineCalibrate

	//from GP
	SetupReadParam;ReadParam

	//from PressML
	MulFull;DoubleAddV;MulDiv;DoubleShr
 ]


structure Array :
 [ pixel^0,1000	byte
 ]

manifest
 [	SetX=#356
	SetY=#357
	ShowDots=#374
	Nop=#377
	SetCoding=1	//byte command
	SetMode=2	//byte command
	SetSize=2	//word command
	SetSamplingProperties=6	//word
	SSPInputIntensity=0
	SSPScreen=2
	SetWindow=1
	DotsFollow=3
 ]

static
 [	White=255
	Black=0
	ScanLen=608
	ArraySize=1024
	XStart=0;XLen=1024
	YStart=-1;YLen=1024

	DisplayOn=true
	LeftX=2540
	TopY=2540
	magMax = 2 //more than 2:1 magnification sets readMode to 3
 ]

let start() be
 [	JasmineInit()
	SetupReadParam()

	let dcb=vec 5+38*700;dcb=dcb+(dcb&1)
	let Screen=dcb+4
	dcb!0=@#420
	dcb!1=38
	dcb!2=Screen
	dcb!3=350
	Zero(Screen,700*38)
	@#420=dcb
	let blackDCB=vec 8;blackDCB=blackDCB+(blackDCB&1)
	blackDCB!0=blackDCB+4;blackDCB!1=#40000;blackDCB!2=0;blackDCB!3=1
	blackDCB!4=0;blackDCB!5=0;blackDCB!6=0;blackDCB!7=0

 [	Ws("*n>")
	JasmineMotorOff()
	let ch=Gets(keys)
	switchon ch into
	 [	case $?: Ws("Black: ");Wns(dsp,Black)
			Ws(" White: ");Wns(dsp,White)
			Ws(" XStart: ");Wns(dsp,XStart)
			Ws(" XLen: ");Wns(dsp,XLen)
			Ws(" YStart: ");Wns(dsp,YStart)
			Ws(" YLen: ");Wns(dsp,YLen)
			endcase
		case $b: case $B: Ws("Black: ");Black=ReadNumber();endcase
		case $c: case $C: Ws("Calibrate: insert sheet of white paper");
			JasmineEject()
			Ws("*n*tPress any key when ready")
			Gets(keys)
			JasmineNewPage(14)
			JasmineCalibrate();
			endcase
		case $d: case $D: Ws("Delay setting: ");JasmineSetDelay(ReadHexDigit())
			endcase
		case $e: case $E: Ws("Erase");Zero(Screen,700*38);endcase
		case $f: case $F: Ws("Forward*n*tnSteps: ")
			JasmineStep(ReadNumber(),true);endcase
//h out of place for zoom
		case $i: case $I: Ws("Initialize RAMS")
			 [	let ramvals=vec 1024
				let val = 54*64
				SetBlock(ramvals,val,1024)
				JasmineLoadRam(ramvals,1024)
			 ]
			endcase
		case $l: case $L: Ws("Length of scan: ");ScanLen=ReadNumber();endcase
		case $m: Ws("MinMax")
		 [	let block=vec 512*6
			let scanHead = JasmineScanInit(block,512*6)
			while Endofs(keys) do
			 [	let a=JasmineReadLine(scanHead)
				let min=256;let max=0
				for x=0 to JasmineCoord(XLen)-1 do
				 [	if a>>Array.pixel^x ls min then min=a>>Array.pixel^x
					if a>>Array.pixel^x gr max then max=a>>Array.pixel^x	
				 ]
				Ws("(");Wns(dsp,min);Ws(",");Wns(dsp,max);Ws(")")
			 ]
			JasmineScanClose(scanHead)
			endcase
		 ]
		case $n: case $N: 
		 [	Ws("New Page*n")
			JasmineEject() //first, eject old page
			Ws("*tPress any key when ready")
			Gets(keys)
			JasmineNewPage(14)
			XStart=0;XLen=1024;YStart=0;YLen=1400
			JasmineSetWindow(XStart,XLen,YStart,YLen)
			endcase
		 ]
		case $o: case $O: Ws("Output File");
		 [	let fileName=vec 20
			let s=ReadParam($O,"file name: ",fileName)
			@#420=0
			WriteFile(s,fileName)
			@#420=dcb
			endcase
		 ]
		case $q: case $Q: Ws("quit");JasmineEject();JasmineMotorOff()
			finish
		case $r: case $R: Ws("Reverse*n*tnSteps: ")
			JasmineStep(ReadNumber(),false);endcase
		case $s: case $S: Ws("Skip count: ");JasmineSetResolution(ReadHexDigit())
			endcase
		case $t: case $T: Ws("Time for integration: ");JasmineSetTime(ReadNumber())
			endcase
		case $w: case $W: Ws("White: ");White=ReadNumber();endcase
		case $x: case $X: Puts(dsp,$X);switchon Gets(keys) into
			 [	case $l: case $L: Ws("Len: ");XLen=ReadNumber();endcase
				case $s: case $S: Ws("Start: ");XStart=ReadNumber();endcase
				default: Ws("???")
			 ]
			if (XStart+XLen) gr ArraySize then XLen=ArraySize-XStart
			endcase
		case $y: case $Y: Puts(dsp,$Y);switchon Gets(keys) into
			 [	case $l: case $L: Ws("Len: ");YLen=ReadNumber();endcase
				case $s: case $S: Ws("Start: ");YStart=ReadNumber();endcase
				default: Ws("???")
			 ]
			endcase
		case $z: Ws("Zoom ")
		 [	while (@#177030&7) eq 7 do [ ]
			let xStart=@#424;let yStart=@#425
			while (@#177030&7) ne 7 do [ ]
			let xEnd=@#424;let yEnd=@#425
			XStart=XStart + MulDiv(xStart,XLen,ScanLen)
			YStart=YStart + MulDiv(yStart,XLen,ScanLen)
			YLen=MulDiv(yEnd-yStart,XLen,ScanLen)
			XLen=MulDiv(xEnd-xStart,XLen,ScanLen)
			//endcase intentionally omitted
		 ]
		case $h: case $H: Ws("Halftone")
		 [	let block=vec 512*6
			JasmineSetWindow(XStart,XLen,YStart,YLen)
			let Init=table[ #70000;#1401]
			let Print=table[ #70001;#1401]
			let errorVec=vec 610
			let params=vec 7
			let numPts=JasmineCoord(XLen)
			params!0=numPts
			params!1=Black	//black
			params!2=(White-Black)*4	//range
			params!3=ScanLen	//outpts
			params!4=errorVec	//errorVec
			params!5=0	//bitOffset
			params!6=Screen	//screen
			params!7=38	//distance
			Init(params)
			blackDCB!3=1
			let depth=1
			test DisplayOn then
			 [ if (ScanLen/numPts) ge magMax then JasmineSetReadMode(3)
			 ]
			or @#420=blackDCB
			let scanHead = JasmineScanInit(block,512*6)
			for y = 0 to JasmineCoord(YLen)-1 do if Endofs(keys) then
			 [	depth=depth+Print(JasmineReadLine(scanHead))
				blackDCB!3=(depth+1)/2
				if depth gr 690 then break
			 ]
			JasmineScanClose(scanHead)
			JasmineSetReadMode(2)
			@#420=dcb
			endcase
		 ]
		case #33:	//escape: flip display mode
			DisplayOn = not DisplayOn
			Ws(DisplayOn?"Display On","Display Off")
			endcase
		default:
	 ]
 ] repeat
]

and WriteFile(s,fileName) be
 [	let AISheader=table [ #102252;#2000;#2012;0;0;3;1;1;8;0;#177777;#177777;0]
	let odd=JasmineCoord(XLen)&1;
	AISheader!3=JasmineCoord(YLen)
	AISheader!4=JasmineCoord(XLen)+odd
	AISheader!9=JasmineCoord(XLen+1)/2	//length of block
	let nPressCommands=22
	let PressCommands=table [ #410;0;0;#1003;SetSize;0;0;
		SetSamplingProperties;7;SSPInputIntensity;0;0;SSPScreen;45;100;85;
		SetWindow;0;0;0;0
		DotsFollow]
	PressCommands!1=JasmineCoord(XLen)+odd;PressCommands!2=JasmineCoord(YLen)
	PressCommands!5=MulDiv(ScanLen,2540,100)
	PressCommands!6=MulDiv(PressCommands!5,YLen,XLen)
	PressCommands!10=Black;PressCommands!11=White
	PressCommands!18=JasmineCoord(XLen); //dd
	PressCommands!20=JasmineCoord(YLen) //dl
	WriteBlock(s,AISheader,1024-nPressCommands)
	WriteBlock(s,PressCommands,nPressCommands)
	let block=vec 512*6
	let scanHead = JasmineScanInit(block,512*6)
	for y=1 to JasmineCoord(YLen) do 
	 [	WriteBlock(s,JasmineReadLine(scanHead),JasmineCoord(XLen+1)/2)
		@#425=MulDiv(y,800,JasmineCoord(YLen))
	 ]
	JasmineScanClose(scanHead)
	//Trailer commands
	Puts(s,0);Puts(s,0)	//word of zero
	Puts(s,SetX);Puts(s,LeftX rshift 8);Puts(s,LeftX)
	Puts(s,SetY);Puts(s,TopY rshift 8);Puts(s,TopY)
	let nDotsWords=vec 1;
	MulFull(JasmineCoord(XLen),JasmineCoord(YLen),nDotsWords)	//nBytes
	DoubleShr(nDotsWords)	//nWords
	Puts(s,Nop);Puts(s,ShowDots)
	WriteBlock(s,nDotsWords,2)
	let EntityTrailer=vec 11
	EntityTrailer!0=0	//type,fontset
	EntityTrailer!1=0;EntityTrailer!2=2*(1024-nPressCommands)	//beginByte
	MoveBlock(EntityTrailer+3,nDotsWords,2)
	DoubleAdd(EntityTrailer+3,EntityTrailer+3)	//words to bytes
	EntityTrailer!5=0;EntityTrailer!6=0	//Xe,Ye
	EntityTrailer!7=0;EntityTrailer!8=0	//left,bottom
	EntityTrailer!9=0;EntityTrailer!10=0	//width,height
	EntityTrailer!11=18	//length
	WriteBlock(s,EntityTrailer,12)
	//Pad to end of record
	DoubleAddV(nDotsWords,18)	//add entity length
	let padLen=#377-((nDotsWords!1)&#377)
	WriteBlock(s,0,padLen)
	//Write font part (0)
	Puts(s,0);Puts(s,0)	//no font part
	WriteBlock(s,0,255)
	//Write part dir
	let partDir=vec 7
	partDir!0=0	//Page
	partDir!1=0	//recordStart
	let nRecords=nil;nRecords<<lh=nDotsWords>>rh;nRecords<<rh=(nDotsWords!1)<<lh
	nRecords=nRecords+4+1	//4 for 1024 wd hdr, and of course off by 1
	partDir!2=nRecords 
	partDir!3=padLen	//padding
	partDir!4=1	//Font
	partDir!5=partDir!2	//recordStart
	partDir!6=1	//recordLen
	partDir!7=255	//padding
	WriteBlock(s,partDir,256)
	//Write doc dir
	let docDirHdr= vec 4
	docDirHdr!0=27183	//password
	docDirHdr!1=nRecords+3	//data,3=(font,part,doc)
	docDirHdr!2=2	//number of parts (page + font)
	docDirHdr!3=nRecords+1	//part dir start
	docDirHdr!4=1	//part dir length in records
	WriteBlock(s,docDirHdr,5)
	for i=5 to #177 do [ Puts(s,-1);Puts(s,-1)]
	WriteBlock(s,fileName,26)
	WriteBlock(s,UserName,16)
	WriteBlock(s,0,#400-#252)
	Closes(s)
 ]

and ReadHexDigit() = valof
 [ let ch=Gets(keys)
	switchon ch into
 	 [ case $0: case $1: case $2: case $3: case $4: 
		case $5: case $6: case $7: case $8: case $9: 
			Puts(dsp,ch)
			resultis ch-$0
		case $a: case $b: case $c: case $d: case $e: case $f:
			Puts(dsp,$A+(ch-$a))
			resultis 10+ch-$a
		case $A: case $B: case $C: case $D: case $E: case $F:
			Puts(dsp,ch)
			resultis 10+ch-$A
		default:
			Ws(" ??? ")
			resultis ReadHexDigit()
	 ]
 ]

and ReadNumber() = valof
 [ let ch=Gets(keys)
	let val=0
	until ch eq $*n do 
	 [	Puts(dsp,ch)
		val=val*10 + ch-$0
		ch=Gets(keys)
	 ]
	resultis val
 ]
(635)\f1 6315b33B