(DEFINE-FILE-INFO PACKAGE "INTERLISP" READTABLE "XCL" BASE 10)

(FILECREATED "11-Nov-88 14:17:22" {ERINYES}<LISPUSERS>LYRIC>AISBLT.\;1
 35120  

      |previous| |date:| "23-Sep-88 20:28:25" {PHYLUM}<LISPUSERS>MEDLEY>AISBLT.\;1)


; Copyright (c) 1988 by Xerox Corporation.  All rights reserved.

(PRETTYCOMPRINT AISBLTCOMS)

(RPAQQ AISBLTCOMS ((* |;;| "") (* |;;| "The AISBLT module") (* |;;| "") (* |;;| "The exported interface is via the following functions") (FNS AISBLT.BITMAP AISFILEHEADER WRITEAIS) (* |;;| "Internal functions") (FNS AISBLT1TO1.BITMAP AISBLT8TO1FSA.BITMAP AISBLT8TO8.BITMAP AISBLTNTO1FSA.BITMAP AISBLTNTO1TRUNCATE.BITMAP SETUPPILOTBBT) (* |;;| "Useful constants") (COMS (* \; "AIS file identifying word") (VARIABLES AIS-PASSWORD)) (COMS (* \; "Attribute part header types") (VARIABLES AIS-RASTER-TYPE AIS-PLACEMENT-TYPE AIS-PHOTOMETRY-TYPE AIS-COMMENT-TYPE)) (COMS (* \; "Raster coding types") (VARIABLES AIS-RASTER-CODING-UCA AIS-RASTER-CODING-CA)) (COMS (* \; "Photometry sense ") (VARIABLES AIS-PHOTOMETRY-SENSE-LARGER-DARKER AIS-PHOTOMETRY-SENSE-LARGER-LIGHTER)) (COMS (* \; "Photometry signal ") (VARIABLES AIS-PHOTOMETRY-SIGNAL-BLACK-AND-WHITE AIS-PHOTOMETRY-SIGNAL-RED-SEPARATION AIS-PHOTOMETRY-SIGNAL-BLUE-SEPARATION AIS-PHOTOMETRY-SIGNAL-GREEN-SEPARATION AIS-PHOTOMETRY-SIGNAL-CYAN-SEPARATION AIS-PHOTOMETRY-SIGNAL-MAGENTA-SEPARATION AIS-PHOTOMETRY-SIGNAL-YELLOW-SEPARATION AIS-PHOTOMETRY-SIGNAL-X-CIE AIS-PHOTOMETRY-SIGNAL-Y-CIE AIS-PHOTOMETRY-SIGNAL-IN-COMMENT AIS-PHOTOMETRY-SIGNAL-UNSPECIFIED)) (COMS (* \; "Photometry spot type") (VARIABLES AIS-PHOTOMETRY-SPOT-TYPE-RECTANGULAR AIS-PHOTOMETRY-SPOT-TYPE-CIRCULAR AIS-PHOTOMETRY-SPOT-TYPE-IN-COMMENTS AIS-PHOTOMETRY-SPOT-TYPE-UNSPECIFIED)) (COMS (* \; "Photometry scale") (VARIABLES AIS-PHOTOMETRY-SCALE-RELECTANCE-TRANSMITTANCE AIS-PHOTOMETRY-SCALE-OPTICAL-DENSITY AIS-PHOTOMETRY-SCALE-IN-COMMENT AIS-PHOTOMETRY-SCALE-UNSPECIFIED)) (COMS (* \; "Photometry") (VARIABLES AIS-PHOTOMETRY-UNSPECIFIED)) (COMS (* \; "Header information when writing AIS format") (VARIABLES AIS-DEFAULT-HEADER-LENGTH))))



(* |;;| "")





(* |;;| "The AISBLT module")





(* |;;| "")





(* |;;| "The exported interface is via the following functions")


(DEFINEQ

(AISBLT.BITMAP

(LAMBDA (FILE SOURCE-LEFT SOURCE-BOTTOM DESTINATION DESTINATION-LEFT DESTINATION-BOTTOM WIDTH HEIGHT HOW FILTER) (* \; "Edited 23-Sep-88 19:48 by Briggs") (* \; "Edited  2-May-88 16:51 by Briggs") (* \; "Edited  2-May-88 16:06 by Briggs") (* |;;;| "Puts an AIS image from a file onto the destination, which may be a bitmap, or a window/imagestream.  ") (* |;;;| "The arguments are the same as BITBLTs for the most part.") (* |;;| "HOW specifies how the number of bits per pixel is condensed if reduction is necessary: TRUNCATE is truncate; FSA is Floyd-Steinberg algorithm;  MODULATE is modulated with a random function") (RESETLST (PROG (AIS-HEADER RASTER-PART PHOTOMETRY-PART PHOTOMETRY-SENSE CLIP-BOTTOM CLIP-HEIGHT CLIP-LEFT CLIP-RIGHT CLIP-TOP CLIP-WIDTH DESTINATION-BASE DESTINATION-BITS-PER-PIXEL DESTINATION-RASTER-WIDTH DESTINATION-WIDTH S-TO-D-X S-TO-D-Y SCAN-DIRECTION SOURCE-BITS-PER-PIXEL SOURCE-HEIGHT SOURCE-PIXEL-OFFSET SOURCE-RASTER-WIDTH SOURCE-WIDTH STREAM) (* |;;| "check and default some of the parameters") (OR (TYPEP DESTINATION (QUOTE BITMAP)) (\\ILLEGAL.ARG DESTINATION)) (OR SOURCE-LEFT (SETQ SOURCE-LEFT 0)) (OR SOURCE-BOTTOM (SETQ SOURCE-BOTTOM 0)) (OR DESTINATION-LEFT (SETQ DESTINATION-LEFT 0)) (OR DESTINATION-BOTTOM (SETQ DESTINATION-BOTTOM 0)) (OR HOW (SETQ HOW (QUOTE FSA))) (* |;;| "find the file, and get the AIS image parameters") (COND ((STREAMP FILE) (SETQ STREAM FILE)) ((SETQ STREAM (FINDFILE FILE T AISDIRECTORIES)) (RESETSAVE NIL (LIST (QUOTE CLOSEF) (SETQ STREAM (OPENSTREAM STREAM (QUOTE INPUT) NIL (QUOTE ((SEQUENTIAL T)))))))) (T (ERROR "Can't find file" FILE))) (* |;;| "interesting point here -- INSUREAISFILE should probably also check for Photometry information and indicate whether the sense of the samples is increasing values implies increasing lightness or the other way around.  Currently, for the 1 bpp case we invert the bitmap so that it displays correctly on the screen.") (SETQ AIS-HEADER (AISFILEHEADER STREAM)) (SETQ RASTER-PART (CADR (ASSOC :RASTER AIS-HEADER))) (* |;;| "dispose of some of the cases we can't handle") (COND ((NOT (EQ (LISTGET RASTER-PART :CODING-TYPE) AIS-RASTER-CODING-UCA)) (ERROR "Can't AISBLT AIS files of raster coding type" (LISTGET RASTER-PART :CODING-TYPE)))) (* |;;| "extract the information we need from the raster attribute") (SETQ SOURCE-BITS-PER-PIXEL (LISTGET RASTER-PART :BITS-PER-SAMPLE)) (SETQ SOURCE-WIDTH (LISTGET RASTER-PART :SCAN-LENGTH)) (SETQ SOURCE-HEIGHT (LISTGET RASTER-PART :SCAN-COUNT)) (SETQ SOURCE-RASTER-WIDTH (LISTGET RASTER-PART :WORDS-PER-SCAN-LINE)) (SETQ SCAN-DIRECTION (LISTGET RASTER-PART :SCAN-DIRECTION)) (* |;;| "Dispose of another case we don't want to handle right now") (COND ((NOT (EQ SCAN-DIRECTION 3)) (ERROR "Scan direction is not top-left to bottom-right(3) - " SCAN-DIRECTION))) (* |;;| "extract the information we need from the photometry part") (SETQ PHOTOMETRY-PART (CADR (ASSOC :PHOTOMETRY AIS-HEADER))) (* |;;| "the photometry sense will indicate whether we need to invert the bitmap to get it into Lisp's 0->white 1-> black sense (larger darker).") (SETQ PHOTOMETRY-SENSE (OR (LISTGET PHOTOMETRY-PART :SENSE) (COND ((EQ SOURCE-BITS-PER-PIXEL 0) (* |;;| "this is a gross kludge by Cedar to avoid specifying the photometry information") (SETQ SOURCE-BITS-PER-PIXEL 1) AIS-PHOTOMETRY-SENSE-LARGER-DARKER) (T AIS-PHOTOMETRY-SENSE-LARGER-LIGHTER)))) (* |;;| "calculate some additional destination information") (SETQ DESTINATION-WIDTH (|fetch| (BITMAP BITMAPWIDTH) |of| DESTINATION)) (SETQ DESTINATION-RASTER-WIDTH (|fetch| (BITMAP BITMAPRASTERWIDTH) |of| DESTINATION)) (SETQ DESTINATION-BITS-PER-PIXEL (|fetch| (BITMAP BITMAPBITSPERPIXEL) |of| DESTINATION)) (SETQ DESTINATION-BASE (|fetch| (BITMAP BITMAPBASE) |of| DESTINATION)) (* |;;| "clipping region is initially all of the destination.  Clipping coordinates are *inclusive* left and bottom, exclusive right and top -- origin 0.") (SETQ CLIP-LEFT 0) (SETQ CLIP-BOTTOM 0) (SETQ CLIP-RIGHT DESTINATION-WIDTH) (SETQ CLIP-TOP (|fetch| (BITMAP BITMAPHEIGHT) |of| DESTINATION)) (* |;;| "reduce the region if required by specified destination left, bottom, width, or height") (SETQ CLIP-LEFT (IMAX CLIP-LEFT DESTINATION-LEFT)) (SETQ CLIP-BOTTOM (IMAX CLIP-BOTTOM DESTINATION-BOTTOM)) (COND (WIDTH (SETQ CLIP-RIGHT (IMIN (IPLUS DESTINATION-LEFT WIDTH) CLIP-RIGHT)))) (COND (HEIGHT (SETQ CLIP-TOP (IMIN (IPLUS DESTINATION-BOTTOM HEIGHT) CLIP-TOP)))) (* |;;| "") (SETQ S-TO-D-X (IDIFFERENCE DESTINATION-LEFT SOURCE-LEFT)) (SETQ S-TO-D-Y (IDIFFERENCE DESTINATION-BOTTOM SOURCE-BOTTOM)) (* |;;| "reduce the region if required by source size.  We know source origin is (0,0)") (SETQ CLIP-LEFT (IMAX S-TO-D-X CLIP-LEFT)) (* \; "was 0") (SETQ CLIP-BOTTOM (IMAX S-TO-D-Y CLIP-BOTTOM)) (* \; "was 0") (SETQ CLIP-RIGHT (IMIN (IPLUS S-TO-D-X SOURCE-WIDTH) CLIP-RIGHT)) (SETQ CLIP-TOP (IMIN (IPLUS S-TO-D-Y SOURCE-HEIGHT) CLIP-TOP)) (* |;;| "calculate width and height of clipped region") (SETQ CLIP-WIDTH (IDIFFERENCE CLIP-RIGHT CLIP-LEFT)) (SETQ CLIP-HEIGHT (IDIFFERENCE CLIP-TOP CLIP-BOTTOM)) (COND ((OR (ILEQ CLIP-WIDTH 0) (ILEQ CLIP-HEIGHT 0)) (* \; "nothing to do") (RETURN))) (* |;;| "\"align\" the source file and destination base so that we need only pass in pixel offsets, width, and height") (SETQ DESTINATION-BASE (\\ADDBASE DESTINATION-BASE (ITIMES DESTINATION-RASTER-WIDTH (|\\SFInvert| DESTINATION CLIP-TOP)))) (\\SETFILEPTR STREAM (IPLUS (\\GETFILEPTR STREAM) (ITIMES SOURCE-RASTER-WIDTH BYTESPERWORD (- SOURCE-HEIGHT (- CLIP-TOP S-TO-D-Y))))) (SETQ SOURCE-PIXEL-OFFSET (- CLIP-LEFT S-TO-D-X)) (* |;;| "") (SELECTQ SOURCE-BITS-PER-PIXEL (8 (SELECTQ DESTINATION-BITS-PER-PIXEL (8 (AISBLT8TO8.BITMAP STREAM SOURCE-PIXEL-OFFSET SOURCE-RASTER-WIDTH DESTINATION-BASE CLIP-LEFT DESTINATION-RASTER-WIDTH DESTINATION-WIDTH CLIP-WIDTH CLIP-HEIGHT)) (1 (SELECTQ HOW ((FSA :FSA) (AISBLT8TO1FSA.BITMAP STREAM SOURCE-PIXEL-OFFSET SOURCE-RASTER-WIDTH DESTINATION-BASE CLIP-LEFT DESTINATION-RASTER-WIDTH DESTINATION-WIDTH CLIP-WIDTH CLIP-HEIGHT PHOTOMETRY-SENSE)) ((TRUNCATE :TRUNCATE) (AISBLTNTO1TRUNCATE.BITMAP STREAM SOURCE-PIXEL-OFFSET SOURCE-RASTER-WIDTH DESTINATION-BASE CLIP-LEFT DESTINATION-RASTER-WIDTH DESTINATION-WIDTH CLIP-WIDTH CLIP-HEIGHT SOURCE-BITS-PER-PIXEL PHOTOMETRY-SENSE)) NIL)) NIL)) (4 (SELECTQ DESTINATION-BITS-PER-PIXEL (1 (SELECTQ HOW ((FSA :FSA) (AISBLTNTO1FSA.BITMAP STREAM SOURCE-PIXEL-OFFSET SOURCE-RASTER-WIDTH DESTINATION-BASE CLIP-LEFT DESTINATION-RASTER-WIDTH DESTINATION-WIDTH CLIP-WIDTH CLIP-HEIGHT SOURCE-BITS-PER-PIXEL PHOTOMETRY-SENSE)) ((TRUNCATE :TRUNCATE) (AISBLTNTO1TRUNCATE.BITMAP STREAM SOURCE-PIXEL-OFFSET SOURCE-RASTER-WIDTH DESTINATION-BASE CLIP-LEFT DESTINATION-RASTER-WIDTH DESTINATION-WIDTH CLIP-WIDTH CLIP-HEIGHT SOURCE-BITS-PER-PIXEL PHOTOMETRY-SENSE)) NIL)) NIL)) (1 (SELECTQ DESTINATION-BITS-PER-PIXEL (1 (AISBLT1TO1.BITMAP STREAM SOURCE-PIXEL-OFFSET SOURCE-RASTER-WIDTH DESTINATION-BASE CLIP-LEFT DESTINATION-RASTER-WIDTH DESTINATION-WIDTH CLIP-WIDTH CLIP-HEIGHT PHOTOMETRY-SENSE)) NIL)) NIL))))
)

(AISFILEHEADER

(LAMBDA (STREAM) (* \; "Edited 21-Sep-88 19:05 by Briggs") (* |;;| "make sure a file is an ais file and put fileptr at beginning of data.") (* |;;| "returns a property list format description of the file format") (LET (HEADERLENGTH ATTRIBUTE-PART-HEADER ATTRIBUTE-FILE-POINTER SCRATCH CODING-TYPE) (\\SETFILEPTR STREAM 0) (|if| (NEQ (\\WIN STREAM) AIS-PASSWORD) |then| (* \; "not an AIS file") NIL |else| (SETQ HEADERLENGTH (ITIMES (\\WIN STREAM) BYTESPERWORD)) (* \; "length in bytes ") (PROG1 (|while| (AND (< (\\GETFILEPTR STREAM) HEADERLENGTH) (NOT (EQ 0 (SETQ ATTRIBUTE-PART-HEADER (\\WIN STREAM))))) |collect| (SETQ ATTRIBUTE-FILE-POINTER (\\GETFILEPTR STREAM)) (PROG1 (SELECTC (LRSH ATTRIBUTE-PART-HEADER 10) (AIS-RASTER-TYPE (* |;;| "The raster part of an AIS file is mandatory") (SETQ SCRATCH (LIST :SCAN-COUNT (\\WIN STREAM) :SCAN-LENGTH (\\WIN STREAM) :SCAN-DIRECTION (\\WIN STREAM) :SAMPLES-PER-PIXEL (\\WIN STREAM) :CODING-TYPE (SETQ CODING-TYPE (\\WIN STREAM)))) (* |;;| "UnCompressedArray is the only known coding type") (SELECTC CODING-TYPE (AIS-RASTER-CODING-UCA (LISTPUT SCRATCH :BITS-PER-SAMPLE (\\WIN STREAM)) (LISTPUT SCRATCH :WORDS-PER-SCAN-LINE (\\WIN STREAM)) (LISTPUT SCRATCH :SCAN-LINES-PER-BLOCK (SIGNED (\\WIN STREAM) BITSPERWORD)) (LISTPUT SCRATCH :PADDING-PER-BLOCK (SIGNED (\\WIN STREAM) BITSPERWORD))) NIL) (LIST :RASTER SCRATCH)) (AIS-PLACEMENT-TYPE (LIST :PLACEMENT (LIST :LEFT (\\WIN STREAM) :BOTTOM (\\WIN STREAM) :WIDTH (\\WIN STREAM) :HEIGHT (\\WIN STREAM)))) (AIS-PHOTOMETRY-TYPE (* |;;| "Ignoring the optional photometry histogram data") (LIST :PHOTOMETRY (LIST :SIGNAL (\\WIN STREAM) :SENSE (\\WIN STREAM) :SCALE (\\WIN STREAM) :SCALE-A (CONS (SIGNED (\\WIN STREAM) BITSPERWORD) (SIGNED (\\WIN STREAM) BITSPERWORD)) :SCALE-B (CONS (SIGNED (\\WIN STREAM) BITSPERWORD) (SIGNED (\\WIN STREAM) BITSPERWORD)) :SCALE-C (CONS (SIGNED (\\WIN STREAM) BITSPERWORD) (SIGNED (\\WIN STREAM) BITSPERWORD)) :SPOT-TYPE (SIGNED (\\WIN STREAM) BITSPERWORD) :SPOT-WIDTH (SIGNED (\\WIN STREAM) BITSPERWORD) :SPOT-LENGTH (SIGNED (\\WIN STREAM) BITSPERWORD) :SAMPLE-MIN (\\WIN STREAM) :SAMPLE-MAX (\\WIN STREAM)))) (AIS-COMMENT-TYPE (* |;;| "(SETQ SCRATCH (ALLOCSTRING (\\BIN STREAM)))  (LIST :COMMENT (AIN SCRATCH 0 (NCHARS SCRATCH)))") NIL) NIL) (\\SETFILEPTR STREAM (PLUS ATTRIBUTE-FILE-POINTER (ITIMES (SUB1 (LOGAND ATTRIBUTE-PART-HEADER 1023)) BYTESPERWORD))))) (\\SETFILEPTR STREAM HEADERLENGTH)))))
)

(WRITEAIS

(LAMBDA (BITMAP FILE REGION) (* \; "Edited 21-Sep-88 18:34 by Briggs") (* |;;;| "writes a bitmap on to a file in AIS format.") (* |;;| "simple checks on the arguments before we proceed") (OR (TYPEP BITMAP (QUOTE BITMAP)) (\\ILLEGAL.ARG BITMAP)) (OR (AND REGION (REGIONP REGION)) (AND REGION (\\ILLEGAL.ARG REGION))) (PROG (STREAM TEMP-BITMAP BITSPERPIXEL RASTERWIDTH WIDTH HEIGHT) (SETQ BITSPERPIXEL (|fetch| (BITMAP BITMAPBITSPERPIXEL) |of| BITMAP)) (COND ((REGIONP REGION) (* |;;| "Get copy of selected REGION of BITMAP into temporary bitmap to avoid having to deal with odd boundary problems when writing contents of BITMAP to STREAM *") (SETQ TEMP-BITMAP (BITMAPCREATE (|fetch| (REGION WIDTH) |of| REGION) (|fetch| (REGION HEIGHT) |of| REGION) BITSPERPIXEL)) (BITBLT BITMAP (|fetch| (REGION LEFT) |of| REGION) (|fetch| (REGION BOTTOM) |of| REGION) TEMP-BITMAP) (SETQ BITMAP TEMP-BITMAP))) (SETQ RASTERWIDTH (|fetch| (BITMAP BITMAPRASTERWIDTH) |of| BITMAP)) (SETQ HEIGHT (|fetch| (BITMAP BITMAPHEIGHT) |of| BITMAP)) (SETQ WIDTH (|fetch| (BITMAP BITMAPWIDTH) |of| BITMAP)) (SETQ STREAM (OPENSTREAM FILE (QUOTE OUTPUT))) (\\WOUT STREAM AIS-PASSWORD) (* \; "write AIS password") (\\WOUT STREAM (FOLDLO AIS-DEFAULT-HEADER-LENGTH BYTESPERWORD)) (* |;;| "Generate raster part") (\\WOUT STREAM (LOGOR (LLSH AIS-RASTER-TYPE 10) 10)) (* \; "set type and length of raster part header") (\\WOUT STREAM HEIGHT) (* \; "Scan count") (\\WOUT STREAM WIDTH) (* \; "ScanLength") (\\WOUT STREAM 3) (* \; "Scan Dir") (\\WOUT STREAM 1) (* \; "samples per pixel.") (\\WOUT STREAM 1) (* \; "coding type:  UnCompressedArray") (\\WOUT STREAM BITSPERPIXEL) (* \; "bits per sample") (\\WOUT STREAM RASTERWIDTH) (* \; "words per sample line.") (\\WOUT STREAM (UNSIGNED -1 16)) (* \; "Sample lines per block: no blocks is 16 bit -1") (\\WOUT STREAM (UNSIGNED -1 16)) (* \; "padding words per block: no blocks is 16 bit -1") (* |;;| "Generate photometry part") (\\WOUT STREAM (LOGOR (LLSH AIS-PHOTOMETRY-TYPE 10) 16)) (\\WOUT STREAM AIS-PHOTOMETRY-SIGNAL-BLACK-AND-WHITE) (\\WOUT STREAM AIS-PHOTOMETRY-SENSE-LARGER-DARKER) (\\WOUT STREAM AIS-PHOTOMETRY-SCALE-UNSPECIFIED) (\\WOUT STREAM AIS-PHOTOMETRY-UNSPECIFIED) (\\WOUT STREAM AIS-PHOTOMETRY-UNSPECIFIED) (\\WOUT STREAM AIS-PHOTOMETRY-UNSPECIFIED) (\\WOUT STREAM AIS-PHOTOMETRY-UNSPECIFIED) (\\WOUT STREAM AIS-PHOTOMETRY-UNSPECIFIED) (\\WOUT STREAM AIS-PHOTOMETRY-UNSPECIFIED) (\\WOUT STREAM AIS-PHOTOMETRY-SPOT-TYPE-UNSPECIFIED) (\\WOUT STREAM AIS-PHOTOMETRY-UNSPECIFIED) (\\WOUT STREAM AIS-PHOTOMETRY-UNSPECIFIED) (\\WOUT STREAM 0) (* \; "sample min") (\\WOUT STREAM 1) (* \; "sample max") (\\WOUT STREAM 0) (* \; "no histogram") (* |;;| "position to start of data") (\\SETFILEPTR STREAM AIS-DEFAULT-HEADER-LENGTH) (\\BOUTS STREAM (|fetch| (BITMAP BITMAPBASE) |of| BITMAP) 0 (ITIMES HEIGHT RASTERWIDTH BYTESPERWORD)) (RETURN (CLOSEF STREAM))))
)
)



(* |;;| "Internal functions")


(DEFINEQ

(AISBLT1TO1.BITMAP

(LAMBDA (STREAM SOURCE-PIXEL-OFFSET SOURCE-RASTER-WIDTH DESTINATION-BASE DESTINATION-PIXEL-OFFSET DESTINATION-RASTER-WIDTH DESTINATION-WIDTH WIDTH HEIGHT PHOTOMETRY-SENSE) (* \; "Edited 22-Sep-88 10:58 by Briggs") (* |;;;| "Internal function called by AISBLT.BITMAP to move 1 bpp source file to 1 bpp bitmap") (LET ((SOURCE-BYTES-PER-LINE (ITIMES SOURCE-RASTER-WIDTH 2)) (DESTINATION-BYTE-OFFSET) (WIDTH-BYTES) (PILOT-BBT (|create| PILOTBBT)) (SCRATCH-BITMAP) (SCRATCH-BITMAP-BASE)) (* |;;| "look for some special cases that we can handle much faster") (COND ((AND (EQ SOURCE-RASTER-WIDTH DESTINATION-RASTER-WIDTH) (EQ SOURCE-PIXEL-OFFSET 0) (EQ DESTINATION-PIXEL-OFFSET 0) (EQ WIDTH DESTINATION-WIDTH)) (* |;;| "source and destination have same raster width") (* |;;| "and the full scan line is being being moved to the full destination scan line") (\\BINS STREAM DESTINATION-BASE 0 (ITIMES HEIGHT SOURCE-BYTES-PER-LINE))) ((AND (EQ (IMOD SOURCE-PIXEL-OFFSET BITSPERBYTE) 0) (EQ (IMOD DESTINATION-PIXEL-OFFSET BITSPERBYTE) 0) (OR (EQ (IMOD WIDTH BITSPERBYTE) 0) (EQ WIDTH DESTINATION-WIDTH))) (* |;;| "Pixel offsets give byte alignment, and the width is an integral number of bytes, or is the destination width (we can run into the slack bits in the last word with no problem)") (SETQ DESTINATION-BYTE-OFFSET (FOLDHI DESTINATION-PIXEL-OFFSET BITSPERBYTE)) (SETQ WIDTH-BYTES (FOLDHI WIDTH BITSPERBYTE)) (|for| ROW |from| 1 |to| HEIGHT |as| FILE-POINTER |from| (IPLUS (FOLDHI SOURCE-PIXEL-OFFSET BITSPERBYTE) (\\GETFILEPTR STREAM)) |by| SOURCE-BYTES-PER-LINE |bind| (LINE-BASE _ DESTINATION-BASE) |do| (\\SETFILEPTR STREAM FILE-POINTER) (\\BINS STREAM LINE-BASE DESTINATION-BYTE-OFFSET WIDTH-BYTES) (COND ((NOT (EQ ROW HEIGHT)) (SETQ LINE-BASE (\\ADDBASE LINE-BASE DESTINATION-RASTER-WIDTH)))))) (T (* |;;| "We have to do bit level realignment -- use a temporary bitmap and let Pilot bitblt  deal with it") (SETQ SCRATCH-BITMAP (BITMAPCREATE WIDTH 1 1)) (SETQ SCRATCH-BITMAP-BASE (|fetch| (BITMAP BITMAPBASE) |of| SCRATCH-BITMAP)) (SETUPPILOTBBT PILOT-BBT (|fetch| (BITMAP BITMAPBASE) |of| SCRATCH-BITMAP) 0 (UNFOLD (FOLDHI WIDTH BITSPERWORD) BITSPERWORD) DESTINATION-BASE DESTINATION-PIXEL-OFFSET (UNFOLD DESTINATION-RASTER-WIDTH BITSPERWORD) WIDTH 1 0 T T (QUOTE INPUT) (QUOTE REPLACE)) (SETQ WIDTH-BYTES (FOLDHI WIDTH BITSPERBYTE)) (|for| ROW |from| 1 |to| HEIGHT |as| FILE-POINTER |from| (IPLUS (FOLDHI SOURCE-PIXEL-OFFSET BITSPERBYTE) (\\GETFILEPTR STREAM)) |by| SOURCE-BYTES-PER-LINE |bind| (LINE-BASE _ DESTINATION-BASE) |do| (\\SETFILEPTR STREAM FILE-POINTER) (\\BINS STREAM SCRATCH-BITMAP-BASE 0 WIDTH-BYTES) (\\PILOTBITBLT PILOT-BBT NIL) (COND ((NOT (EQ ROW HEIGHT)) (|freplace| (PILOTBBT PBTDEST) |of| PILOT-BBT |with| (SETQ LINE-BASE (\\ADDBASE LINE-BASE DESTINATION-RASTER-WIDTH)))))))) (|if| (EQ PHOTOMETRY-SENSE AIS-PHOTOMETRY-SENSE-LARGER-LIGHTER) |then| (SETUPPILOTBBT PILOT-BBT DESTINATION-BASE DESTINATION-PIXEL-OFFSET (UNFOLD DESTINATION-RASTER-WIDTH BITSPERWORD) DESTINATION-BASE DESTINATION-PIXEL-OFFSET (UNFOLD DESTINATION-RASTER-WIDTH BITSPERWORD) WIDTH HEIGHT 0 NIL NIL (QUOTE INVERT) (QUOTE REPLACE)) (\\PILOTBITBLT PILOT-BBT NIL))))
)

(AISBLT8TO1FSA.BITMAP

(LAMBDA (STREAM SOURCE-PIXEL-OFFSET SOURCE-RASTER-WIDTH DESTINATION-BASE DESTINATION-PIXEL-OFFSET DESTINATION-RASTER-WIDTH DESTINATION-WIDTH WIDTH HEIGHT PHOTOMETRY-SENSE) (* \; "Edited 23-Sep-88 20:01 by Briggs") (* \; "Edited  2-May-88 17:00 by Briggs") (* |;;;| "Internal function called by AISBLT.BITMAP to move 8 bpp source file to 1 bpp bitmap using Floyd-Steinberg algorithm") (* |;;| "") (* |;;| "Use of the Error Table") (* |;;| "") (* |;;| "See Newman & Sproull, Principles of Interactive Computer Graphics, pg. 226 for a description of the Floyd-Steinberg algorithm.") (* |;;| "") (* |;;| "The error for the current pixel being processed (0<= n < WIDTH) is maintained in ERROR-CURRENT-PIXEL. The error for the pixel directly below the current pixel is stored in ERROR-TABLE[n], while  ERROR-TABLE[n+1]  represents the error for the pixel to the right.  Once ERROR-CURRENT-PIXEL has been used in the calculation it is loaded from ERROR-TABLE[n+1], which frees this cell in the error table to hold the error for the pixel below and to the right of the current pixel.") (* |;;| " ") (LET ((SOURCE-BYTES-PER-LINE (UNFOLD SOURCE-RASTER-WIDTH BYTESPERWORD)) (INTERMEDIATE-WORD-BUFFER (\\ALLOCBLOCK (FOLDHI WIDTH WORDSPERCELL))) (INTERMEDIATE-WORD-BASE) (ERROR-CURRENT-PIXEL) (ERROR-TABLE (\\ALLOCBLOCK (ADD1 WIDTH))) (ERROR-BASE) (16-TO-1-PILOTBBT (|create| PILOTBBT)) (PIXEL) (ERROR) (QUARTER-ERROR) (THREE-EIGHTHS-ERROR)) (* |;;| "Setup for turning words to final destination bits.  Note that we conditionally invert the bits -- if the AIS file had bits in the sense 0=black, 255=white, because Lisp bitmaps are 0=white, 1=black when displayed.") (SETUPPILOTBBT 16-TO-1-PILOTBBT INTERMEDIATE-WORD-BUFFER 15 16 DESTINATION-BASE DESTINATION-PIXEL-OFFSET 1 1 WIDTH 0 T T (COND ((EQ PHOTOMETRY-SENSE AIS-PHOTOMETRY-SENSE-LARGER-LIGHTER) (QUOTE INVERT)) (T (QUOTE INPUT))) (QUOTE REPLACE)) (* |;;| "clear the error table initially") (|for| COLUMN |from| 0 |to| (TIMES 2 WIDTH) |by| 2 |do| (\\PUTBASEPTR ERROR-TABLE COLUMN 0)) (* |;;| "") (|for| ROW |from| 1 |to| HEIGHT |as| FILE-POINTER |from| (IPLUS SOURCE-PIXEL-OFFSET (\\GETFILEPTR STREAM)) |by| SOURCE-BYTES-PER-LINE |do| (* |;;| "position the file at the beginning of the new scan line") (\\SETFILEPTR STREAM FILE-POINTER) (* |;;| "reset the roving pointer in the error table for this row, and load the current pixel error, clearing the table entry since it will be accumulated into.") (SETQ ERROR-BASE ERROR-TABLE) (SETQ ERROR-CURRENT-PIXEL (\\GETBASEPTR ERROR-BASE 0)) (\\PUTBASEPTR ERROR-BASE 0 0) (* |;;| "reset the roving pointer to the intermediate result buffer") (SETQ INTERMEDIATE-WORD-BASE INTERMEDIATE-WORD-BUFFER) (|for| COLUMN |from| 1 |to| WIDTH |do| (* |;;| "take pixel value as read in plus error accumulated to this pixel -- see note re: error calculations above") (SETQ PIXEL (IPLUS ERROR-CURRENT-PIXEL (\\BIN STREAM))) (* |;;| "threshold") (COND ((IGREATERP PIXEL 127) (\\PUTBASE INTERMEDIATE-WORD-BASE 0 1) (SETQ ERROR (IDIFFERENCE PIXEL 255))) (T (\\PUTBASE INTERMEDIATE-WORD-BASE 0 0) (SETQ ERROR (IDIFFERENCE PIXEL 0)))) (* |;;| "distribute the error (3/8ths to each of pixels to right, and down, 1/4 to pixel diagonally down)") (* |;;| "we can use fast logical shifts only if we bias the number to make it positive (we use a bias of 32768 here)") (* |;;| "calculate 3/8ths error as half of (error -  error/4) -- this way we will incur less error due to rounding in the error calculation.") (SETQ QUARTER-ERROR (IDIFFERENCE (LRSH (IPLUS 32768 ERROR) 2) (LRSH 32768 2))) (SETQ THREE-EIGHTHS-ERROR (IDIFFERENCE (LRSH (IPLUS 32768 (IDIFFERENCE ERROR QUARTER-ERROR)) 1) (LRSH 32768 1))) (* |;;| "pre-load the current pixel error so that the next entry in the error table can be used to store the error for the next line down") (SETQ ERROR-CURRENT-PIXEL (\\GETBASEPTR ERROR-BASE 2)) (* |;;| "3/8ths of the error to the right (the next \"current\")") (SETQ ERROR-CURRENT-PIXEL (IPLUS ERROR-CURRENT-PIXEL THREE-EIGHTHS-ERROR)) (* |;;| "3/8ths of the error down") (\\PUTBASEPTR ERROR-BASE 0 (IPLUS (\\GETBASEPTR ERROR-BASE 0) THREE-EIGHTHS-ERROR)) (* |;;| "1/4 of the error down to the right") (\\PUTBASEPTR ERROR-BASE 2 QUARTER-ERROR) (* |;;| "advance the roving pointer for error table") (SETQ ERROR-BASE (\\ADDBASE ERROR-BASE 2)) (* |;;| "advance pointer to intermediate result scan line buffer") (SETQ INTERMEDIATE-WORD-BASE (\\ADDBASE INTERMEDIATE-WORD-BASE 1))) (* |;;| " Pack the bits from the intermediate scan line buffer into the destination bitmap at the appropriate line and advance the destination scan line pointer.") (|freplace| (PILOTBBT PBTDEST) |of| 16-TO-1-PILOTBBT |with| DESTINATION-BASE) (\\PILOTBITBLT 16-TO-1-PILOTBBT NIL) (SETQ DESTINATION-BASE (\\ADDBASE DESTINATION-BASE DESTINATION-RASTER-WIDTH)))) T)
)

(AISBLT8TO8.BITMAP

(LAMBDA (STREAM SOURCE-PIXEL-OFFSET SOURCE-RASTER-WIDTH DESTINATION-BASE DESTINATION-PIXEL-OFFSET DESTINATION-RASTER-WIDTH DESTINATION-WIDTH WIDTH HEIGHT) (* \; "Edited 28-Apr-88 11:02 by Briggs") (* |;;;| "Internal function called by AISBLT.BITMAP to move 8 bpp source file to 8 bpp bitmap") (* |;;| "look for some special cases that we can handle much faster") (LET ((SOURCE-BYTES-PER-LINE (ITIMES SOURCE-RASTER-WIDTH 2))) (COND ((AND (EQ SOURCE-RASTER-WIDTH DESTINATION-RASTER-WIDTH) (EQ SOURCE-PIXEL-OFFSET 0) (EQ DESTINATION-PIXEL-OFFSET 0) (EQ WIDTH DESTINATION-WIDTH)) (* |;;| "source and destination have same raster width") (* |;;| "and the full scan line is being moved to the full destination scan line") (\\BINS STREAM DESTINATION-BASE 0 (ITIMES HEIGHT SOURCE-BYTES-PER-LINE))) (T (|for| ROW |from| 1 |to| HEIGHT |as| FILE-POINTER |from| (IPLUS SOURCE-PIXEL-OFFSET (\\GETFILEPTR STREAM)) |by| SOURCE-BYTES-PER-LINE |do| (\\SETFILEPTR STREAM FILE-POINTER) (\\BINS STREAM DESTINATION-BASE DESTINATION-PIXEL-OFFSET WIDTH) (COND ((NOT (EQ ROW HEIGHT)) (SETQ DESTINATION-BASE (\\ADDBASE DESTINATION-BASE DESTINATION-RASTER-WIDTH)))))))))
)

(AISBLTNTO1FSA.BITMAP

(LAMBDA (STREAM SOURCE-PIXEL-OFFSET SOURCE-RASTER-WIDTH DESTINATION-BASE DESTINATION-PIXEL-OFFSET DESTINATION-RASTER-WIDTH DESTINATION-WIDTH WIDTH HEIGHT SOURCE-BITS-PER-PIXEL PHOTOMETRY-SENSE) (* \; "Edited 23-Sep-88 20:11 by Briggs") (* \; "Edited  2-May-88 15:40 by Briggs") (* |;;;| "Internal function called by AISBLT.BITMAP to move N bpp source file to 1 bpp bitmap using Floyd-Steinberg algorithm.  For N=8, use the special case version AISBLT8TO1FSA.BITMAP.") (* |;;| "") (* |;;| "Use of the Error Table") (* |;;| "") (* |;;| "See Newman & Sproull, Principles of Interactive Computer Graphics, pg. 226 for a description of the Floyd-Steinberg algorithm.") (* |;;| "") (* |;;| "The error for the current pixel being processed (0<= n < WIDTH) is maintained in ERROR-CURRENT-PIXEL. The error for the pixel directly below the current pixel is stored in ERROR-TABLE[n], while  ERROR-TABLE[n+1]  represents the error for the pixel to the right.  Once ERROR-CURRENT-PIXEL has been used in the calculation it is loaded from ERROR-TABLE[n+1], which frees this cell in the error table to hold the error for the pixel below and to the right of the current pixel.") (* |;;| " ") (LET* ((SOURCE-BYTES-PER-LINE (ITIMES SOURCE-RASTER-WIDTH 2)) (SOURCE-LINE-BYTE-BUFFER-BASE (\\ALLOCBLOCK (FOLDHI SOURCE-RASTER-WIDTH WORDSPERCELL))) (INTERMEDIATE-WORD-BUFFER (\\ALLOCBLOCK (FOLDHI WIDTH WORDSPERCELL))) (INTERMEDIATE-WORD-BASE) (ERROR-CURRENT-PIXEL) (ERROR-TABLE (\\ALLOCBLOCK (ADD1 WIDTH))) (ERROR-BASE) (ERROR-FRACTIONAL-POINT 7) (N-TO-16-PILOTBBT (|create| PILOTBBT)) (16-TO-1-PILOTBBT (|create| PILOTBBT)) (PIXEL) (BLACK 0) (WHITE (SUB1 (EXPT 2 SOURCE-BITS-PER-PIXEL))) (THRESHOLD (LRSH (IPLUS BLACK WHITE) 1)) (ERROR) (QUARTER-ERROR) (THREE-EIGHTHS-ERROR)) (* |;;| "do the setup for expanding source pixels to words.") (SETUPPILOTBBT N-TO-16-PILOTBBT SOURCE-LINE-BYTE-BUFFER-BASE (ITIMES SOURCE-PIXEL-OFFSET SOURCE-BITS-PER-PIXEL) SOURCE-BITS-PER-PIXEL INTERMEDIATE-WORD-BUFFER (IDIFFERENCE 16 SOURCE-BITS-PER-PIXEL) 16 SOURCE-BITS-PER-PIXEL WIDTH 0 T T (QUOTE INPUT) (QUOTE REPLACE)) (* |;;| "Setup for turning words to final destination bits.  Note that we conditionally invert the bits -- if the AIS file had bits in the sense 0=black, larger=lighter, because Lisp bitmaps are 0=white, 1=black when displayed.") (SETUPPILOTBBT 16-TO-1-PILOTBBT INTERMEDIATE-WORD-BUFFER 15 16 DESTINATION-BASE DESTINATION-PIXEL-OFFSET 1 1 WIDTH 0 T T (COND ((EQ PHOTOMETRY-SENSE AIS-PHOTOMETRY-SENSE-LARGER-LIGHTER) (QUOTE INVERT)) (T (QUOTE INPUT))) (QUOTE REPLACE)) (* |;;| "clear the error table initially") (|for| COLUMN |from| 0 |to| (TIMES 2 WIDTH) |by| 2 |do| (\\PUTBASEPTR ERROR-TABLE COLUMN 0)) (* |;;| "") (|for| ROW |from| 1 |to| HEIGHT |do| (* |;;| "We read a full scan line, and extract the bits we need as we expand to 16 bits per pixel") (\\BINS STREAM SOURCE-LINE-BYTE-BUFFER-BASE 0 SOURCE-BYTES-PER-LINE) (* |;;| "expand the pixels to words to make them easier to deal with") (\\PILOTBITBLT N-TO-16-PILOTBBT NIL) (* |;;| "reset the roving pointer in the error table for this row, and load the current pixel error, resetting the table entry to 0 because it will be accumulated to as error for the next line") (SETQ ERROR-BASE ERROR-TABLE) (SETQ ERROR-CURRENT-PIXEL (\\GETBASEPTR ERROR-BASE 0)) (\\PUTBASEPTR ERROR-BASE 0 0) (* |;;| "reset the roving pointer to the intermediate result buffer") (SETQ INTERMEDIATE-WORD-BASE INTERMEDIATE-WORD-BUFFER) (|for| COLUMN |from| 1 |to| WIDTH |do| (* |;;| "take pixel value as read in plus error accumulated to this pixel") (SETQ PIXEL (IPLUS ERROR-CURRENT-PIXEL (\\GETBASE INTERMEDIATE-WORD-BASE 0))) (* |;;| "threshold") (COND ((IGREATERP PIXEL THRESHOLD) (\\PUTBASE INTERMEDIATE-WORD-BASE 0 1) (SETQ ERROR (IDIFFERENCE PIXEL WHITE))) (T (\\PUTBASE INTERMEDIATE-WORD-BASE 0 0) (SETQ ERROR (IDIFFERENCE PIXEL BLACK)))) (* |;;| "distribute the error (3/8ths to each of pixels to right, and down, 1/4 to pixel diagonally down)") (* |;;| "we can use fast logical shifts only if we bias the number to make it positive") (SETQ QUARTER-ERROR (IDIFFERENCE (LRSH (IPLUS 32768 ERROR) 2) (LRSH 32768 2))) (SETQ THREE-EIGHTHS-ERROR (IDIFFERENCE (LRSH (IPLUS 32768 (IDIFFERENCE ERROR QUARTER-ERROR)) 1) (LRSH 32768 1))) (* |;;| "pre-load the current pixel error so that the next entry in the error table can be used to store the error for the next line down") (SETQ ERROR-CURRENT-PIXEL (\\GETBASEPTR ERROR-BASE 2)) (* |;;| "3/8ths of the error to the right (the next \"current\")") (SETQ ERROR-CURRENT-PIXEL (IPLUS ERROR-CURRENT-PIXEL THREE-EIGHTHS-ERROR)) (* |;;| "3/8ths of the error down") (\\PUTBASEPTR ERROR-BASE 0 (IPLUS (\\GETBASEPTR ERROR-BASE 0) THREE-EIGHTHS-ERROR)) (* |;;| "1/4 of the error down to the right") (\\PUTBASEPTR ERROR-BASE 2 QUARTER-ERROR) (* |;;| "advance the roving pointer for error table") (SETQ ERROR-BASE (\\ADDBASE ERROR-BASE 2)) (* |;;| "advance pointer to intermediate result scan line buffer") (SETQ INTERMEDIATE-WORD-BASE (\\ADDBASE INTERMEDIATE-WORD-BASE 1))) (* |;;| " Pack the bits from the intermediate scan line buffer into the destination bitmap at the appropriate line and advance the destination scan line pointer.") (|freplace| (PILOTBBT PBTDEST) |of| 16-TO-1-PILOTBBT |with| DESTINATION-BASE) (\\PILOTBITBLT 16-TO-1-PILOTBBT NIL) (SETQ DESTINATION-BASE (\\ADDBASE DESTINATION-BASE DESTINATION-RASTER-WIDTH)))) T)
)

(AISBLTNTO1TRUNCATE.BITMAP

(LAMBDA (STREAM SOURCE-PIXEL-OFFSET SOURCE-RASTER-WIDTH DESTINATION-BASE DESTINATION-PIXEL-OFFSET DESTINATION-RASTER-WIDTH DESTINATION-WIDTH WIDTH HEIGHT SOURCE-BITS-PER-PIXEL PHOTOMETRY-SENSE) (* \; "Edited 22-Sep-88 10:23 by Briggs") (* \; "Edited  2-May-88 15:40 by Briggs") (* |;;;| "Internal function called by AISBLT.BITMAP to move N bpp source file to 1 bpp bitmap using truncation.") (LET* ((SOURCE-BYTES-PER-LINE (ITIMES SOURCE-RASTER-WIDTH 2)) (SOURCE-LINE-BYTE-BUFFER-BASE (\\ALLOCBLOCK (FOLDHI SOURCE-RASTER-WIDTH WORDSPERCELL))) (HIGH-N-TO-1-PILOTBBT (|create| PILOTBBT)) (16-TO-1-PILOTBBT (|create| PILOTBBT))) (* |;;| "Setup for turning source pixels to destination pixels.  Note that we conditionally invert the bits -- if the AIS file had bits in the sense 0=black, larger=lighter, because Lisp bitmaps are 0=white, 1=black when displayed.") (SETUPPILOTBBT HIGH-N-TO-1-PILOTBBT SOURCE-LINE-BYTE-BUFFER-BASE (ITIMES SOURCE-PIXEL-OFFSET SOURCE-BITS-PER-PIXEL) SOURCE-BITS-PER-PIXEL DESTINATION-BASE DESTINATION-PIXEL-OFFSET 1 1 WIDTH 0 T T (COND ((EQ PHOTOMETRY-SENSE AIS-PHOTOMETRY-SENSE-LARGER-LIGHTER) (QUOTE INVERT)) (T (QUOTE INPUT))) (QUOTE REPLACE)) (|for| ROW |from| 1 |to| HEIGHT |do| (* |;;| "We read a full scan line, and extract the bits we need.") (\\BINS STREAM SOURCE-LINE-BYTE-BUFFER-BASE 0 SOURCE-BYTES-PER-LINE) (* |;;| "Pack the bits from the source scan line buffer into the destination bitmap at the appropriate line and advance the destination scan line pointer.") (|freplace| (PILOTBBT PBTDEST) |of| HIGH-N-TO-1-PILOTBBT |with| DESTINATION-BASE) (\\PILOTBITBLT HIGH-N-TO-1-PILOTBBT NIL) (SETQ DESTINATION-BASE (\\ADDBASE DESTINATION-BASE DESTINATION-RASTER-WIDTH)))) T)
)

(SETUPPILOTBBT

(LAMBDA (PILOT-BBT SOURCE-BASE SOURCE-BIT SOURCE-BPL DESTINATION-BASE DESTINATION-BIT DESTINATION-BPL WIDTH HEIGHT FLAGS DISJOINT DISJOINT-ITEMS SOURCE OPERATION) (* \; "Edited 28-Apr-88 18:21 by Briggs") (|freplace| (PILOTBBT PBTDEST) |of| PILOT-BBT |with| DESTINATION-BASE) (|freplace| (PILOTBBT PBTDESTBIT) |of| PILOT-BBT |with| DESTINATION-BIT) (|freplace| (PILOTBBT PBTDESTBPL) |of| PILOT-BBT |with| DESTINATION-BPL) (|freplace| (PILOTBBT PBTSOURCE) |of| PILOT-BBT |with| SOURCE-BASE) (|freplace| (PILOTBBT PBTSOURCEBIT) |of| PILOT-BBT |with| SOURCE-BIT) (|freplace| (PILOTBBT PBTSOURCEBPL) |of| PILOT-BBT |with| SOURCE-BPL) (|freplace| (PILOTBBT PBTWIDTH) |of| PILOT-BBT |with| WIDTH) (|freplace| (PILOTBBT PBTHEIGHT) |of| PILOT-BBT |with| HEIGHT) (|freplace| (PILOTBBT PBTFLAGS) |of| PILOT-BBT |with| FLAGS) (|freplace| (PILOTBBT PBTDISJOINT) |of| PILOT-BBT |with| DISJOINT) (|freplace| (PILOTBBT PBTDISJOINTITEMS) |of| PILOT-BBT |with| DISJOINT-ITEMS) (|freplace| (PILOTBBT PBTUSEGRAY) |of| PILOT-BBT |with| NIL) (\\SETPBTFUNCTION PILOT-BBT SOURCE OPERATION))
)
)



(* |;;| "Useful constants")





(* \; "AIS file identifying word")



(CL:DEFCONSTANT AIS-PASSWORD 33962)



(* \; "Attribute part header types")



(CL:DEFCONSTANT AIS-RASTER-TYPE 1)

(CL:DEFCONSTANT AIS-PLACEMENT-TYPE 2)

(CL:DEFCONSTANT AIS-PHOTOMETRY-TYPE 3)

(CL:DEFCONSTANT AIS-COMMENT-TYPE 4)



(* \; "Raster coding types")



(CL:DEFCONSTANT AIS-RASTER-CODING-UCA 1)

(CL:DEFCONSTANT AIS-RASTER-CODING-CA 2)



(* \; "Photometry sense ")



(CL:DEFCONSTANT AIS-PHOTOMETRY-SENSE-LARGER-DARKER 1)

(CL:DEFCONSTANT AIS-PHOTOMETRY-SENSE-LARGER-LIGHTER 0)



(* \; "Photometry signal ")



(CL:DEFCONSTANT AIS-PHOTOMETRY-SIGNAL-BLACK-AND-WHITE 0 "Photometry signal is black and white")

(CL:DEFCONSTANT AIS-PHOTOMETRY-SIGNAL-RED-SEPARATION 1 "Photometry signal is red separation")

(CL:DEFCONSTANT AIS-PHOTOMETRY-SIGNAL-BLUE-SEPARATION 2 "Photometry signal is blue separation")

(CL:DEFCONSTANT AIS-PHOTOMETRY-SIGNAL-GREEN-SEPARATION 3 "Photometry signal is green separation")

(CL:DEFCONSTANT AIS-PHOTOMETRY-SIGNAL-CYAN-SEPARATION 4 "Photometry signal is cyan separation")

(CL:DEFCONSTANT AIS-PHOTOMETRY-SIGNAL-MAGENTA-SEPARATION 5 "Photometry signal is magenta separation")

(CL:DEFCONSTANT AIS-PHOTOMETRY-SIGNAL-YELLOW-SEPARATION 6 "Photometry signal is yellow separation")

(CL:DEFCONSTANT AIS-PHOTOMETRY-SIGNAL-X-CIE 7 "Photometry signal is x signal (CIE)")

(CL:DEFCONSTANT AIS-PHOTOMETRY-SIGNAL-Y-CIE 8 "Photometry signal is y signal (CIE)")

(CL:DEFCONSTANT AIS-PHOTOMETRY-SIGNAL-IN-COMMENT (UNSIGNED -2 16) "Photometry signal specified in comment part")

(CL:DEFCONSTANT AIS-PHOTOMETRY-SIGNAL-UNSPECIFIED (UNSIGNED -1 16) "Photometry signal unspecified")



(* \; "Photometry spot type")



(CL:DEFCONSTANT AIS-PHOTOMETRY-SPOT-TYPE-RECTANGULAR 1 "Photometry spot type is rectangular")

(CL:DEFCONSTANT AIS-PHOTOMETRY-SPOT-TYPE-CIRCULAR 2 "Photometry spot type is circular")

(CL:DEFCONSTANT AIS-PHOTOMETRY-SPOT-TYPE-IN-COMMENTS (UNSIGNED -2 16) "Photometry spot type is specified in comments")

(CL:DEFCONSTANT AIS-PHOTOMETRY-SPOT-TYPE-UNSPECIFIED (UNSIGNED -1 16) "Photometry spot type is unspecified")



(* \; "Photometry scale")



(CL:DEFCONSTANT AIS-PHOTOMETRY-SCALE-RELECTANCE-TRANSMITTANCE 1 "Photometry scale is reflectance or transmittance x 1000")

(CL:DEFCONSTANT AIS-PHOTOMETRY-SCALE-OPTICAL-DENSITY 2 "Photometry scale is optical density x 1000")

(CL:DEFCONSTANT AIS-PHOTOMETRY-SCALE-IN-COMMENT (UNSIGNED -2 16) "Photometry scale is specified in comments")

(CL:DEFCONSTANT AIS-PHOTOMETRY-SCALE-UNSPECIFIED (UNSIGNED -1 16) "Photometry scale is unspecified")



(* \; "Photometry")



(CL:DEFCONSTANT AIS-PHOTOMETRY-UNSPECIFIED (UNSIGNED -1 16) "Photometry general unspecified value")



(* \; "Header information when writing AIS format")



(CL:DEFCONSTANT AIS-DEFAULT-HEADER-LENGTH (CL:* 1024 BYTESPERWORD) "Length in bytes of the header to write in AIS files")
(PUTPROPS AISBLT COPYRIGHT ("Xerox Corporation" 1988))
(DECLARE\: DONTCOPY
  (FILEMAP (NIL (2241 14630 (AISBLT.BITMAP 2251 . 9292) (AISFILEHEADER 9294 . 11739) (WRITEAIS 11741 . 
14628)) (14669 32114 (AISBLT1TO1.BITMAP 14679 . 17862) (AISBLT8TO1FSA.BITMAP 17864 . 22694) (
AISBLT8TO8.BITMAP 22696 . 23865) (AISBLTNTO1FSA.BITMAP 23867 . 29280) (AISBLTNTO1TRUNCATE.BITMAP 29282
 . 31022) (SETUPPILOTBBT 31024 . 32112)))))
STOP