Initial revisionXORG-STABLE

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diff --git a/src/scan.c b/src/scan.c
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+/*
+ * Copyright (C) 1989-95 GROUPE BULL
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to
+ * deal in the Software without restriction, including without limitation the
+ * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+ * sell copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * GROUPE BULL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+ * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ *
+ * Except as contained in this notice, the name of GROUPE BULL shall not be
+ * used in advertising or otherwise to promote the sale, use or other dealings
+ * in this Software without prior written authorization from GROUPE BULL.
+ */
+
+/*****************************************************************************\
+* scan.c:                                                                     *
+*                                                                             *
+*  XPM library                                                                *
+*  Scanning utility for XPM file format                                       *
+*                                                                             *
+*  Developed by Arnaud Le Hors                                                *
+\*****************************************************************************/
+/* $XFree86: xc/extras/Xpm/lib/scan.c,v 1.3 2002/01/07 19:40:49 dawes Exp $ */
+
+/*
+ * The code related to FOR_MSW has been added by
+ * HeDu (hedu@cul-ipn.uni-kiel.de) 4/94
+ */
+
+/*
+ * The code related to AMIGA has been added by
+ * Lorens Younes (d93-hyo@nada.kth.se) 4/96
+ */
+
+#include "XpmI.h"
+
+#define MAXPRINTABLE 92			/* number of printable ascii chars
+					 * minus \ and " for string compat
+					 * and ? to avoid ANSI trigraphs. */
+
+static char *printable =
+" .XoO+@#$%&*=-;:>,<1234567890qwertyuipasdfghjklzxcvbnmMNBVCZ\
+ASDFGHJKLPIUYTREWQ!~^/()_`'][{}|";
+
+/*
+ * printable begin with a space, so in most case, due to my algorithm, when
+ * the number of different colors is less than MAXPRINTABLE, it will give a
+ * char follow by "nothing" (a space) in the readable xpm file
+ */
+
+
+typedef struct {
+    Pixel *pixels;
+    unsigned int *pixelindex;
+    unsigned int size;
+    unsigned int ncolors;
+    unsigned int mask_pixel;		/* whether there is or not */
+}      PixelsMap;
+
+LFUNC(storePixel, int, (Pixel pixel, PixelsMap *pmap,
+			unsigned int *index_return));
+
+LFUNC(storeMaskPixel, int, (Pixel pixel, PixelsMap *pmap,
+			    unsigned int *index_return));
+
+typedef int (*storeFuncPtr)(Pixel pixel, PixelsMap *pmap,
+			    unsigned int *index_return);
+
+#ifndef FOR_MSW
+# ifndef AMIGA
+LFUNC(GetImagePixels, int, (XImage *image, unsigned int width,
+			    unsigned int height, PixelsMap *pmap));
+
+LFUNC(GetImagePixels32, int, (XImage *image, unsigned int width,
+			      unsigned int height, PixelsMap *pmap));
+
+LFUNC(GetImagePixels16, int, (XImage *image, unsigned int width,
+			      unsigned int height, PixelsMap *pmap));
+
+LFUNC(GetImagePixels8, int, (XImage *image, unsigned int width,
+			     unsigned int height, PixelsMap *pmap));
+
+LFUNC(GetImagePixels1, int, (XImage *image, unsigned int width,
+			     unsigned int height, PixelsMap *pmap,
+			     storeFuncPtr storeFunc));
+# else /* AMIGA */
+LFUNC(AGetImagePixels, int, (XImage *image, unsigned int width,
+			     unsigned int height, PixelsMap *pmap,
+			     storeFuncPtr storeFunc));
+# endif/* AMIGA */
+#else  /* ndef FOR_MSW */
+LFUNC(MSWGetImagePixels, int, (Display *d, XImage *image, unsigned int width,
+			       unsigned int height, PixelsMap *pmap,
+			       storeFuncPtr storeFunc));
+#endif
+LFUNC(ScanTransparentColor, int, (XpmColor *color, unsigned int cpp,
+				  XpmAttributes *attributes));
+
+LFUNC(ScanOtherColors, int, (Display *display, XpmColor *colors, int ncolors,
+			     Pixel *pixels, unsigned int mask,
+			     unsigned int cpp, XpmAttributes *attributes));
+
+/*
+ * This function stores the given pixel in the given arrays which are grown
+ * if not large enough.
+ */
+static int
+storePixel(pixel, pmap, index_return)
+    Pixel pixel;
+    PixelsMap *pmap;
+    unsigned int *index_return;
+{
+    unsigned int i;
+    Pixel *p;
+    unsigned int ncolors;
+
+    if (*index_return) {		/* this is a transparent pixel! */
+	*index_return = 0;
+	return 0;
+    }
+    ncolors = pmap->ncolors;
+    p = pmap->pixels + pmap->mask_pixel;
+    for (i = pmap->mask_pixel; i < ncolors; i++, p++)
+	if (*p == pixel)
+	    break;
+    if (i == ncolors) {
+	if (ncolors >= pmap->size) {
+	    pmap->size *= 2;
+	    p = (Pixel *) XpmRealloc(pmap->pixels, sizeof(Pixel) * pmap->size);
+	    if (!p)
+		return (1);
+	    pmap->pixels = p;
+
+	}
+	(pmap->pixels)[ncolors] = pixel;
+	pmap->ncolors++;
+    }
+    *index_return = i;
+    return 0;
+}
+
+static int
+storeMaskPixel(pixel, pmap, index_return)
+    Pixel pixel;
+    PixelsMap *pmap;
+    unsigned int *index_return;
+{
+    if (!pixel) {
+	if (!pmap->ncolors) {
+	    pmap->ncolors = 1;
+	    (pmap->pixels)[0] = 0;
+	    pmap->mask_pixel = 1;
+	}
+	*index_return = 1;
+    } else
+	*index_return = 0;
+    return 0;
+}
+
+/* function call in case of error */
+#undef RETURN
+#define RETURN(status) \
+{ \
+      ErrorStatus = status; \
+      goto error; \
+}
+
+/*
+ * This function scans the given image and stores the found informations in
+ * the given XpmImage structure.
+ */
+int
+XpmCreateXpmImageFromImage(display, image, shapeimage,
+			   xpmimage, attributes)
+    Display *display;
+    XImage *image;
+    XImage *shapeimage;
+    XpmImage *xpmimage;
+    XpmAttributes *attributes;
+{
+    /* variables stored in the XpmAttributes structure */
+    unsigned int cpp;
+
+    /* variables to return */
+    PixelsMap pmap;
+    XpmColor *colorTable = NULL;
+    int ErrorStatus = 0;
+
+    /* calculation variables */
+    unsigned int width = 0;
+    unsigned int height = 0;
+    unsigned int cppm;			/* minimum chars per pixel */
+    unsigned int c;
+
+    /* initialize pmap */
+    pmap.pixels = NULL;
+    pmap.pixelindex = NULL;
+    pmap.size = 256;			/* should be enough most of the time */
+    pmap.ncolors = 0;
+    pmap.mask_pixel = 0;
+
+    /*
+     * get geometry
+     */
+    if (image) {
+	width = image->width;
+	height = image->height;
+    } else if (shapeimage) {
+	width = shapeimage->width;
+	height = shapeimage->height;
+    }
+
+    /*
+     * retrieve information from the XpmAttributes
+     */
+    if (attributes && (attributes->valuemask & XpmCharsPerPixel
+/* 3.2 backward compatibility code */
+		       || attributes->valuemask & XpmInfos))
+/* end 3.2 bc */
+	cpp = attributes->cpp;
+    else
+	cpp = 0;
+
+    pmap.pixelindex =
+	(unsigned int *) XpmCalloc(width * height, sizeof(unsigned int));
+    if (!pmap.pixelindex)
+	RETURN(XpmNoMemory);
+
+    pmap.pixels = (Pixel *) XpmMalloc(sizeof(Pixel) * pmap.size);
+    if (!pmap.pixels)
+	RETURN(XpmNoMemory);
+
+    /*
+     * scan shape mask if any
+     */
+    if (shapeimage) {
+#ifndef FOR_MSW
+# ifndef AMIGA
+	ErrorStatus = GetImagePixels1(shapeimage, width, height, &pmap,
+				      storeMaskPixel);
+# else
+	ErrorStatus = AGetImagePixels(shapeimage, width, height, &pmap,
+				      storeMaskPixel);
+# endif
+#else
+	ErrorStatus = MSWGetImagePixels(display, shapeimage, width, height,
+					&pmap, storeMaskPixel);
+#endif
+	if (ErrorStatus != XpmSuccess)
+	    RETURN(ErrorStatus);
+    }
+
+    /*
+     * scan the image data
+     * 
+     * In case depth is 1 or bits_per_pixel is 4, 6, 8, 24 or 32 use optimized
+     * functions, otherwise use slower but sure general one.
+     * 
+     */
+
+    if (image) {
+#ifndef FOR_MSW
+# ifndef AMIGA
+	if (((image->bits_per_pixel | image->depth) == 1)  &&
+	    (image->byte_order == image->bitmap_bit_order))
+	    ErrorStatus = GetImagePixels1(image, width, height, &pmap,
+					  storePixel);
+	else if (image->format == ZPixmap) {
+	    if (image->bits_per_pixel == 8)
+		ErrorStatus = GetImagePixels8(image, width, height, &pmap);
+	    else if (image->bits_per_pixel == 16)
+		ErrorStatus = GetImagePixels16(image, width, height, &pmap);
+	    else if (image->bits_per_pixel == 32)
+		ErrorStatus = GetImagePixels32(image, width, height, &pmap);
+	} else
+	    ErrorStatus = GetImagePixels(image, width, height, &pmap);
+# else
+	ErrorStatus = AGetImagePixels(image, width, height, &pmap,
+				      storePixel);
+# endif
+#else
+	ErrorStatus = MSWGetImagePixels(display, image, width, height, &pmap,
+					storePixel);
+#endif
+	if (ErrorStatus != XpmSuccess)
+	    RETURN(ErrorStatus);
+    }
+
+    /*
+     * get rgb values and a string of char, and possibly a name for each
+     * color
+     */
+
+    colorTable = (XpmColor *) XpmCalloc(pmap.ncolors, sizeof(XpmColor));
+    if (!colorTable)
+	RETURN(XpmNoMemory);
+
+    /* compute the minimal cpp */
+    for (cppm = 1, c = MAXPRINTABLE; pmap.ncolors > c; cppm++)
+	c *= MAXPRINTABLE;
+    if (cpp < cppm)
+	cpp = cppm;
+
+    if (pmap.mask_pixel) {
+	ErrorStatus = ScanTransparentColor(colorTable, cpp, attributes);
+	if (ErrorStatus != XpmSuccess)
+	    RETURN(ErrorStatus);
+    }
+
+    ErrorStatus = ScanOtherColors(display, colorTable, pmap.ncolors,
+				  pmap.pixels, pmap.mask_pixel, cpp,
+				  attributes);
+    if (ErrorStatus != XpmSuccess)
+	RETURN(ErrorStatus);
+
+    /*
+     * store found informations in the XpmImage structure
+     */
+    xpmimage->width = width;
+    xpmimage->height = height;
+    xpmimage->cpp = cpp;
+    xpmimage->ncolors = pmap.ncolors;
+    xpmimage->colorTable = colorTable;
+    xpmimage->data = pmap.pixelindex;
+
+    XpmFree(pmap.pixels);
+    return (XpmSuccess);
+
+/* exit point in case of error, free only locally allocated variables */
+error:
+    if (pmap.pixelindex)
+	XpmFree(pmap.pixelindex);
+    if (pmap.pixels)
+	XpmFree(pmap.pixels);
+    if (colorTable)
+	xpmFreeColorTable(colorTable, pmap.ncolors);
+
+    return (ErrorStatus);
+}
+
+static int
+ScanTransparentColor(color, cpp, attributes)
+    XpmColor *color;
+    unsigned int cpp;
+    XpmAttributes *attributes;
+{
+    char *s;
+    unsigned int a, b, c;
+
+    /* first get a character string */
+    a = 0;
+    if (!(s = color->string = (char *) XpmMalloc(cpp + 1)))
+	return (XpmNoMemory);
+    *s++ = printable[c = a % MAXPRINTABLE];
+    for (b = 1; b < cpp; b++, s++)
+	*s = printable[c = ((a - c) / MAXPRINTABLE) % MAXPRINTABLE];
+    *s = '\0';
+
+    /* then retreive related info from the attributes if any */
+    if (attributes && (attributes->valuemask & XpmColorTable
+/* 3.2 backward compatibility code */
+		       || attributes->valuemask & XpmInfos)
+/* end 3.2 bc */
+	&& attributes->mask_pixel != XpmUndefPixel) {
+
+	unsigned int key;
+	char **defaults = (char **) color;
+	char **mask_defaults;
+
+/* 3.2 backward compatibility code */
+	if (attributes->valuemask & XpmColorTable)
+/* end 3.2 bc */
+	    mask_defaults = (char **) (
+		attributes->colorTable + attributes->mask_pixel);
+/* 3.2 backward compatibility code */
+	else
+	    mask_defaults = (char **)
+		((XpmColor **) attributes->colorTable)[attributes->mask_pixel];
+/* end 3.2 bc */
+	for (key = 1; key <= NKEYS; key++) {
+	    if ((s = mask_defaults[key])) {
+		defaults[key] = (char *) xpmstrdup(s);
+		if (!defaults[key])
+		    return (XpmNoMemory);
+	    }
+	}
+    } else {
+	color->c_color = (char *) xpmstrdup(TRANSPARENT_COLOR);
+	if (!color->c_color)
+	    return (XpmNoMemory);
+    }
+    return (XpmSuccess);
+}
+
+static int
+ScanOtherColors(display, colors, ncolors, pixels, mask, cpp, attributes)
+    Display *display;
+    XpmColor *colors;
+    int ncolors;
+    Pixel *pixels;
+    unsigned int mask;
+    unsigned int cpp;
+    XpmAttributes *attributes;
+{
+    /* variables stored in the XpmAttributes structure */
+    Colormap colormap;
+    char *rgb_fname;
+
+#ifndef FOR_MSW
+    xpmRgbName rgbn[MAX_RGBNAMES];
+#else
+    xpmRgbName *rgbn = NULL; 
+#endif    
+    int rgbn_max = 0;
+    unsigned int i, j, c, i2;
+    XpmColor *color;
+    XColor *xcolors = NULL, *xcolor;
+    char *colorname, *s;
+    XpmColor *colorTable = NULL, **oldColorTable = NULL;
+    unsigned int ancolors = 0;
+    Pixel *apixels = NULL;
+    unsigned int mask_pixel = 0;
+    Bool found;
+
+    /* retrieve information from the XpmAttributes */
+    if (attributes && (attributes->valuemask & XpmColormap))
+	colormap = attributes->colormap;
+    else
+	colormap = XDefaultColormap(display, XDefaultScreen(display));
+    if (attributes && (attributes->valuemask & XpmRgbFilename))
+	rgb_fname = attributes->rgb_fname;
+    else
+	rgb_fname = NULL;
+
+    /* start from the right element */
+    if (mask) {
+	colors++;
+	ncolors--;
+	pixels++;
+    }
+
+    /* first get character strings and rgb values */
+    xcolors = (XColor *) XpmMalloc(sizeof(XColor) * ncolors);
+    if (!xcolors)
+	return (XpmNoMemory);
+
+    for (i = 0, i2 = mask, color = colors, xcolor = xcolors;
+	 i < ncolors; i++, i2++, color++, xcolor++, pixels++) {
+
+	if (!(s = color->string = (char *) XpmMalloc(cpp + 1))) {
+	    XpmFree(xcolors);
+	    return (XpmNoMemory);
+	}
+	*s++ = printable[c = i2 % MAXPRINTABLE];
+	for (j = 1; j < cpp; j++, s++)
+	    *s = printable[c = ((i2 - c) / MAXPRINTABLE) % MAXPRINTABLE];
+	*s = '\0';
+
+	xcolor->pixel = *pixels;
+    }
+    XQueryColors(display, colormap, xcolors, ncolors);
+
+#ifndef FOR_MSW
+    /* read the rgb file if any was specified */
+    if (rgb_fname)
+	rgbn_max = xpmReadRgbNames(attributes->rgb_fname, rgbn);
+#else
+    /* FOR_MSW: rgb names and values are hardcoded in rgbtab.h */
+    rgbn_max = xpmReadRgbNames(NULL, NULL);
+#endif
+
+    if (attributes && attributes->valuemask & XpmColorTable) {
+	colorTable = attributes->colorTable;
+	ancolors = attributes->ncolors;
+	apixels = attributes->pixels;
+	mask_pixel = attributes->mask_pixel;
+    }
+/* 3.2 backward compatibility code */
+    else if (attributes && attributes->valuemask & XpmInfos) {
+	oldColorTable = (XpmColor **) attributes->colorTable;
+	ancolors = attributes->ncolors;
+	apixels = attributes->pixels;
+	mask_pixel = attributes->mask_pixel;
+    }
+/* end 3.2 bc */
+
+    for (i = 0, color = colors, xcolor = xcolors; i < ncolors;
+						  i++, color++, xcolor++) {
+
+	/* look for related info from the attributes if any */
+	found = False;
+	if (ancolors) {
+	    unsigned int offset = 0;
+
+	    for (j = 0; j < ancolors; j++) {
+		if (j == mask_pixel) {
+		    offset = 1;
+		    continue;
+		}
+		if (apixels[j - offset] == xcolor->pixel)
+		    break;
+	    }
+	    if (j != ancolors) {
+		unsigned int key;
+		char **defaults = (char **) color;
+		char **adefaults;
+
+/* 3.2 backward compatibility code */
+		if (oldColorTable)
+		    adefaults = (char **) oldColorTable[j];
+		else
+/* end 3.2 bc */
+		    adefaults = (char **) (colorTable + j);
+
+		found = True;
+		for (key = 1; key <= NKEYS; key++) {
+		    if ((s = adefaults[key]))
+			defaults[key] = (char *) xpmstrdup(s);
+		}
+	    }
+	}
+	if (!found) {
+	    /* if nothing found look for a color name */
+	    colorname = NULL;
+	    if (rgbn_max)
+		colorname = xpmGetRgbName(rgbn, rgbn_max, xcolor->red,
+					  xcolor->green, xcolor->blue);
+	    if (colorname)
+		color->c_color = (char *) xpmstrdup(colorname);
+	    else {
+		/* at last store the rgb value */
+		char buf[BUFSIZ];
+#ifndef FOR_MSW
+		sprintf(buf, "#%04X%04X%04X",
+			xcolor->red, xcolor->green, xcolor->blue);
+#else   
+		sprintf(buf, "#%02x%02x%02x",
+			xcolor->red, xcolor->green, xcolor->blue);
+#endif			
+		color->c_color = (char *) xpmstrdup(buf);
+	    }
+	    if (!color->c_color) {
+		XpmFree(xcolors);
+		xpmFreeRgbNames(rgbn, rgbn_max);
+		return (XpmNoMemory);
+	    }
+	}
+    }
+
+    XpmFree(xcolors);
+    xpmFreeRgbNames(rgbn, rgbn_max);
+    return (XpmSuccess);
+}
+
+#ifndef FOR_MSW
+# ifndef AMIGA
+/*
+ * The functions below are written from X11R5 MIT's code (XImUtil.c)
+ *
+ * The idea is to have faster functions than the standard XGetPixel function
+ * to scan the image data. Indeed we can speed up things by suppressing tests
+ * performed for each pixel. We do exactly the same tests but at the image
+ * level.
+ */
+
+static unsigned long Const low_bits_table[] = {
+    0x00000000, 0x00000001, 0x00000003, 0x00000007,
+    0x0000000f, 0x0000001f, 0x0000003f, 0x0000007f,
+    0x000000ff, 0x000001ff, 0x000003ff, 0x000007ff,
+    0x00000fff, 0x00001fff, 0x00003fff, 0x00007fff,
+    0x0000ffff, 0x0001ffff, 0x0003ffff, 0x0007ffff,
+    0x000fffff, 0x001fffff, 0x003fffff, 0x007fffff,
+    0x00ffffff, 0x01ffffff, 0x03ffffff, 0x07ffffff,
+    0x0fffffff, 0x1fffffff, 0x3fffffff, 0x7fffffff,
+    0xffffffff
+};
+
+/*
+ * Default method to scan pixels of an image data structure.
+ * The algorithm used is:
+ *
+ *	copy the source bitmap_unit or Zpixel into temp
+ *	normalize temp if needed
+ *	extract the pixel bits into return value
+ *
+ */
+
+static int
+GetImagePixels(image, width, height, pmap)
+    XImage *image;
+    unsigned int width;
+    unsigned int height;
+    PixelsMap *pmap;
+{
+    char *src;
+    char *dst;
+    unsigned int *iptr;
+    char *data;
+    int x, y, i;
+    int bits, depth, ibu, ibpp, offset;
+    unsigned long lbt;
+    Pixel pixel, px;
+
+    data = image->data;
+    iptr = pmap->pixelindex;
+    depth = image->depth;
+    lbt = low_bits_table[depth];
+    ibpp = image->bits_per_pixel;
+    offset = image->xoffset;
+
+    if ((image->bits_per_pixel | image->depth) == 1) {
+	ibu = image->bitmap_unit;
+	for (y = 0; y < height; y++)
+	    for (x = 0; x < width; x++, iptr++) {
+		src = &data[XYINDEX(x, y, image)];
+		dst = (char *) &pixel;
+		pixel = 0;
+		for (i = ibu >> 3; --i >= 0;)
+		    *dst++ = *src++;
+		XYNORMALIZE(&pixel, image);
+		bits = (x + offset) % ibu;
+		pixel = ((((char *) &pixel)[bits >> 3]) >> (bits & 7)) & 1;
+		if (ibpp != depth)
+		    pixel &= lbt;
+		if (storePixel(pixel, pmap, iptr))
+		    return (XpmNoMemory);
+	    }
+    } else if (image->format == XYPixmap) {
+	int nbytes, bpl, j;
+	long plane = 0;
+	ibu = image->bitmap_unit;
+	nbytes = ibu >> 3;
+	bpl = image->bytes_per_line;
+	for (y = 0; y < height; y++)
+	    for (x = 0; x < width; x++, iptr++) {
+		pixel = 0;
+		plane = 0;
+		for (i = depth; --i >= 0;) {
+		    src = &data[XYINDEX(x, y, image) + plane];
+		    dst = (char *) &px;
+		    px = 0;
+		    for (j = nbytes; --j >= 0;)
+			*dst++ = *src++;
+		    XYNORMALIZE(&px, image);
+		    bits = (x + offset) % ibu;
+		    pixel = (pixel << 1) |
+			    (((((char *) &px)[bits >> 3]) >> (bits & 7)) & 1);
+		    plane = plane + (bpl * height);
+		}
+		if (ibpp != depth)
+		    pixel &= lbt;
+		if (storePixel(pixel, pmap, iptr))
+		    return (XpmNoMemory);
+	    }
+    } else if (image->format == ZPixmap) {
+	for (y = 0; y < height; y++)
+	    for (x = 0; x < width; x++, iptr++) {
+		src = &data[ZINDEX(x, y, image)];
+		dst = (char *) &px;
+		px = 0;
+		for (i = (ibpp + 7) >> 3; --i >= 0;)
+		    *dst++ = *src++;
+		ZNORMALIZE(&px, image);
+		pixel = 0;
+		for (i = sizeof(unsigned long); --i >= 0;)
+		    pixel = (pixel << 8) | ((unsigned char *) &px)[i];
+		if (ibpp == 4) {
+		    if (x & 1)
+			pixel >>= 4;
+		    else
+			pixel &= 0xf;
+		}
+		if (ibpp != depth)
+		    pixel &= lbt;
+		if (storePixel(pixel, pmap, iptr))
+		    return (XpmNoMemory);
+	    }
+    } else
+	return (XpmColorError); /* actually a bad image */
+    return (XpmSuccess);
+}
+
+/*
+ * scan pixels of a 32-bits Z image data structure
+ */
+
+#if !defined(WORD64) && !defined(LONG64)
+static unsigned long byteorderpixel = MSBFirst << 24;
+#endif
+
+static int
+GetImagePixels32(image, width, height, pmap)
+    XImage *image;
+    unsigned int width;
+    unsigned int height;
+    PixelsMap *pmap;
+{
+    unsigned char *addr;
+    unsigned char *data;
+    unsigned int *iptr;
+    int x, y;
+    unsigned long lbt;
+    Pixel pixel;
+    int depth;
+
+    data = (unsigned char *) image->data;
+    iptr = pmap->pixelindex;
+    depth = image->depth;
+    lbt = low_bits_table[depth];
+#if !defined(WORD64) && !defined(LONG64)
+    if (*((char *) &byteorderpixel) == image->byte_order) {
+	for (y = 0; y < height; y++)
+	    for (x = 0; x < width; x++, iptr++) {
+		addr = &data[ZINDEX32(x, y, image)];
+		pixel = *((unsigned long *) addr);
+		if (depth != 32)
+		    pixel &= lbt;
+		if (storePixel(pixel, pmap, iptr))
+		    return (XpmNoMemory);
+	    }
+    } else
+#endif
+    if (image->byte_order == MSBFirst)
+	for (y = 0; y < height; y++)
+	    for (x = 0; x < width; x++, iptr++) {
+		addr = &data[ZINDEX32(x, y, image)];
+		pixel = ((unsigned long) addr[0] << 24 |
+			 (unsigned long) addr[1] << 16 |
+			 (unsigned long) addr[2] << 8 |
+			 addr[3]);
+		if (depth != 32)
+		    pixel &= lbt;
+		if (storePixel(pixel, pmap, iptr))
+		    return (XpmNoMemory);
+	    }
+    else
+	for (y = 0; y < height; y++)
+	    for (x = 0; x < width; x++, iptr++) {
+		addr = &data[ZINDEX32(x, y, image)];
+		pixel = (addr[0] |
+			 (unsigned long) addr[1] << 8 |
+			 (unsigned long) addr[2] << 16 |
+			 (unsigned long) addr[3] << 24);
+		if (depth != 32)
+		    pixel &= lbt;
+		if (storePixel(pixel, pmap, iptr))
+		    return (XpmNoMemory);
+	    }
+    return (XpmSuccess);
+}
+
+/*
+ * scan pixels of a 16-bits Z image data structure
+ */
+
+static int
+GetImagePixels16(image, width, height, pmap)
+    XImage *image;
+    unsigned int width;
+    unsigned int height;
+    PixelsMap *pmap;
+{
+    unsigned char *addr;
+    unsigned char *data;
+    unsigned int *iptr;
+    int x, y;
+    unsigned long lbt;
+    Pixel pixel;
+    int depth;
+
+    data = (unsigned char *) image->data;
+    iptr = pmap->pixelindex;
+    depth = image->depth;
+    lbt = low_bits_table[depth];
+    if (image->byte_order == MSBFirst)
+	for (y = 0; y < height; y++)
+	    for (x = 0; x < width; x++, iptr++) {
+		addr = &data[ZINDEX16(x, y, image)];
+		pixel = addr[0] << 8 | addr[1];
+		if (depth != 16)
+		    pixel &= lbt;
+		if (storePixel(pixel, pmap, iptr))
+		    return (XpmNoMemory);
+	    }
+    else
+	for (y = 0; y < height; y++)
+	    for (x = 0; x < width; x++, iptr++) {
+		addr = &data[ZINDEX16(x, y, image)];
+		pixel = addr[0] | addr[1] << 8;
+		if (depth != 16)
+		    pixel &= lbt;
+		if (storePixel(pixel, pmap, iptr))
+		    return (XpmNoMemory);
+	    }
+    return (XpmSuccess);
+}
+
+/*
+ * scan pixels of a 8-bits Z image data structure
+ */
+
+static int
+GetImagePixels8(image, width, height, pmap)
+    XImage *image;
+    unsigned int width;
+    unsigned int height;
+    PixelsMap *pmap;
+{
+    unsigned int *iptr;
+    unsigned char *data;
+    int x, y;
+    unsigned long lbt;
+    Pixel pixel;
+    int depth;
+
+    data = (unsigned char *) image->data;
+    iptr = pmap->pixelindex;
+    depth = image->depth;
+    lbt = low_bits_table[depth];
+    for (y = 0; y < height; y++)
+	for (x = 0; x < width; x++, iptr++) {
+	    pixel = data[ZINDEX8(x, y, image)];
+	    if (depth != 8)
+		pixel &= lbt;
+	    if (storePixel(pixel, pmap, iptr))
+		return (XpmNoMemory);
+	}
+    return (XpmSuccess);
+}
+
+/*
+ * scan pixels of a 1-bit depth Z image data structure
+ */
+
+static int
+GetImagePixels1(image, width, height, pmap, storeFunc)
+    XImage *image;
+    unsigned int width;
+    unsigned int height;
+    PixelsMap *pmap;
+    storeFuncPtr storeFunc;
+{
+    unsigned int *iptr;
+    int x, y;
+    char *data;
+    Pixel pixel;
+    int xoff, yoff, offset, bpl;
+
+    data = image->data;
+    iptr = pmap->pixelindex;
+    offset = image->xoffset;
+    bpl = image->bytes_per_line;
+
+    if (image->bitmap_bit_order == MSBFirst)
+	for (y = 0; y < height; y++)
+	    for (x = 0; x < width; x++, iptr++) {
+		xoff = x + offset;
+		yoff = y * bpl + (xoff >> 3);
+		xoff &= 7;
+		pixel = (data[yoff] & (0x80 >> xoff)) ? 1 : 0;
+		if ((*storeFunc) (pixel, pmap, iptr))
+		    return (XpmNoMemory);
+	    }
+    else
+	for (y = 0; y < height; y++)
+	    for (x = 0; x < width; x++, iptr++) {
+		xoff = x + offset;
+		yoff = y * bpl + (xoff >> 3);
+		xoff &= 7;
+		pixel = (data[yoff] & (1 << xoff)) ? 1 : 0;
+		if ((*storeFunc) (pixel, pmap, iptr))
+		    return (XpmNoMemory);
+	    }
+    return (XpmSuccess);
+}
+
+# else /* AMIGA */
+
+#define CLEAN_UP(status) \
+{\
+    if (pixels) XpmFree (pixels);\
+    if (tmp_img) FreeXImage (tmp_img);\
+    return (status);\
+}
+
+static int
+AGetImagePixels (
+    XImage        *image,
+    unsigned int   width,
+    unsigned int   height,
+    PixelsMap     *pmap,
+    int          (*storeFunc) ())
+{
+    unsigned int   *iptr;
+    unsigned int    x, y;
+    unsigned char  *pixels;
+    XImage         *tmp_img;
+    
+    pixels = XpmMalloc ((((width+15)>>4)<<4)*sizeof (*pixels));
+    if (pixels == NULL)
+	return XpmNoMemory;
+    
+    tmp_img = AllocXImage ((((width+15)>>4)<<4), 1, image->rp->BitMap->Depth);
+    if (tmp_img == NULL)
+	CLEAN_UP (XpmNoMemory)
+    
+    iptr = pmap->pixelindex;
+    for (y = 0; y < height; ++y)
+    {
+	ReadPixelLine8 (image->rp, 0, y, width, pixels, tmp_img->rp);
+	for (x = 0; x < width; ++x, ++iptr)
+	{
+	    if ((*storeFunc) (pixels[x], pmap, iptr))
+		CLEAN_UP (XpmNoMemory)
+	}
+    }
+    
+    CLEAN_UP (XpmSuccess)
+}
+
+#undef CLEAN_UP
+
+# endif/* AMIGA */
+#else  /* ndef FOR_MSW */
+static int
+MSWGetImagePixels(display, image, width, height, pmap, storeFunc)
+    Display *display;
+    XImage *image;
+    unsigned int width;
+    unsigned int height;
+    PixelsMap *pmap;
+    int (*storeFunc) ();
+{
+    unsigned int *iptr;
+    unsigned int x, y;
+    Pixel pixel;
+
+    iptr = pmap->pixelindex;
+
+    SelectObject(*display, image->bitmap);
+    for (y = 0; y < height; y++) {
+	for (x = 0; x < width; x++, iptr++) {
+	    pixel = GetPixel(*display, x, y);
+	    if ((*storeFunc) (pixel, pmap, iptr))
+		return (XpmNoMemory);
+	}
+    }
+    return (XpmSuccess);
+}
+
+#endif
+
+#ifndef FOR_MSW
+# ifndef AMIGA
+int
+XpmCreateXpmImageFromPixmap(display, pixmap, shapemask,
+			    xpmimage, attributes)
+    Display *display;
+    Pixmap pixmap;
+    Pixmap shapemask;
+    XpmImage *xpmimage;
+    XpmAttributes *attributes;
+{
+    XImage *ximage = NULL;
+    XImage *shapeimage = NULL;
+    unsigned int width = 0;
+    unsigned int height = 0;
+    int ErrorStatus;
+
+    /* get geometry */
+    if (attributes && attributes->valuemask & XpmSize) {
+	width = attributes->width;
+	height = attributes->height;
+    }
+    /* get the ximages */
+    if (pixmap)
+	xpmCreateImageFromPixmap(display, pixmap, &ximage, &width, &height);
+    if (shapemask)
+	xpmCreateImageFromPixmap(display, shapemask, &shapeimage,
+				 &width, &height);
+
+    /* create the related XpmImage */
+    ErrorStatus = XpmCreateXpmImageFromImage(display, ximage, shapeimage,
+					     xpmimage, attributes);
+
+    /* destroy the ximages */
+    if (ximage)
+	XDestroyImage(ximage);
+    if (shapeimage)
+	XDestroyImage(shapeimage);
+
+    return (ErrorStatus);
+}
+
+# endif/* not AMIGA */
+#endif /* ndef FOR_MSW */