--- /dev/null
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "MPL"); you may not use this file except in
+ * compliance with the MPL. You may obtain a copy of the MPL at
+ * http://www.mozilla.org/MPL/
+ *
+ * Software distributed under the MPL is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the MPL
+ * for the specific language governing rights and limitations under the
+ * MPL.
+ *
+ * Alternatively, the contents of this file may be used under the
+ * terms of the GNU Library General Public License (the "LGPL"), in
+ * which case the provisions of the LGPL are applicable instead of
+ * those above. If you wish to allow use of your version of this file
+ * only under the terms of the LGPL and not to allow others to use
+ * your version of this file under the MPL, indicate your decision by
+ * deleting the provisions above and replace them with the notice and
+ * other provisions required by the LGPL. If you do not delete the
+ * provisions above, a recipient may use your version of this file
+ * under either the MPL or the LGPL.
+ */
+
+/*
+ * This code is derived from GdkRgb.
+ * For more information on GdkRgb, see http://www.levien.com/gdkrgb/
+ * Raph Levien <raph@acm.org>
+ */
+
+/* Ported by Christopher Blizzard to Xlib. With permission from the
+ * original authors and the copyright holders of this file, the
+ * contents of this file are also redistributable under the terms of
+ * the Mozilla Public license. For information about the Mozilla
+ * Public License, please see the license information at
+ * http://www.mozilla.org/MPL/ */
+
+/* This code is copyright the following authors:
+ * Raph Levien <raph@acm.org>
+ * Manish Singh <manish@gtk.org>
+ * Tim Janik <timj@gtk.org>
+ * Peter Mattis <petm@xcf.berkeley.edu>
+ * Spencer Kimball <spencer@xcf.berkeley.edu>
+ * Josh MacDonald <jmacd@xcf.berkeley.edu>
+ * Christopher Blizzard <blizzard@redhat.com>
+ * Owen Taylor <otaylor@redhat.com>
+ * Shawn T. Amundson <amundson@gtk.org>
+*/
+
+#include <math.h>
+
+#if HAVE_CONFIG_H
+# include <config.h>
+# if STDC_HEADERS
+# include <stdio.h>
+# include <stdlib.h>
+# include <string.h>
+# endif
+#else
+# include <stdio.h>
+# include <stdlib.h>
+#endif
+
+#define ENABLE_GRAYSCALE
+
+/* include this before so that we can get endian definitions if
+ they are there... */
+
+#include "gdk-pixbuf-xlibrgb.h"
+
+#ifndef MIN
+#define MIN(a, b) (((a) < (b)) ? (a) : (b))
+#endif
+
+#ifndef MAX
+#define MAX(a, b) (((a) > (b)) ? (a) : (b))
+#endif
+
+typedef enum {
+ LSB_FIRST,
+ MSB_FIRST
+} ByteOrder;
+
+
+typedef struct _XlibRgbInfo XlibRgbInfo;
+
+typedef void (*XlibRgbConvFunc) (XImage *image,
+ int ax, int ay,
+ int width, int height,
+ unsigned char *buf, int rowstride,
+ int x_align, int y_align,
+ XlibRgbCmap *cmap);
+
+/* Some of these fields should go, as they're not being used at all.
+ Globals should generally migrate into here - it's very likely that
+ we'll want to run more than one GdkRgbInfo context at the same time
+ (i.e. some but not all windows have privately installed
+ colormaps). */
+
+struct _XlibRgbInfo
+{
+ Display *display;
+ Screen *screen;
+ int screen_num;
+ XVisualInfo *x_visual_info;
+ Colormap cmap;
+ XColor *cmap_colors;
+ Visual *default_visualid;
+ Colormap default_colormap;
+
+ unsigned long *color_pixels;
+ unsigned long *gray_pixels;
+ unsigned long *reserved_pixels;
+
+ unsigned long red_shift;
+ unsigned long red_prec;
+ unsigned long blue_shift;
+ unsigned long blue_prec;
+ unsigned long green_shift;
+ unsigned long green_prec;
+
+ unsigned int nred_shades;
+ unsigned int ngreen_shades;
+ unsigned int nblue_shades;
+ unsigned int ngray_shades;
+ unsigned int nreserved;
+
+ unsigned int bpp;
+ unsigned int cmap_alloced;
+ double gamma_val;
+
+ /* Generally, the stage buffer is used to convert 32bit RGB, gray,
+ and indexed images into 24 bit packed RGB. */
+ unsigned char *stage_buf;
+
+ XlibRgbCmap *gray_cmap;
+
+ Bool dith_default;
+
+ Bool bitmap; /* set true if in 1 bit per pixel mode */
+ GC own_gc;
+
+ /* Convert functions */
+ XlibRgbConvFunc conv;
+ XlibRgbConvFunc conv_d;
+
+ XlibRgbConvFunc conv_32;
+ XlibRgbConvFunc conv_32_d;
+
+ XlibRgbConvFunc conv_gray;
+ XlibRgbConvFunc conv_gray_d;
+
+ XlibRgbConvFunc conv_indexed;
+ XlibRgbConvFunc conv_indexed_d;
+};
+
+static Bool xlib_rgb_install_cmap = FALSE;
+static int xlib_rgb_min_colors = 5 * 5 * 5;
+static Bool xlib_rgb_verbose = FALSE;
+
+#define IMAGE_WIDTH 256
+#define STAGE_ROWSTRIDE (IMAGE_WIDTH * 3)
+#define IMAGE_HEIGHT 64
+#define N_IMAGES 6
+
+static XlibRgbInfo *image_info = NULL;
+static XImage *static_image[N_IMAGES];
+static int static_image_idx;
+
+static unsigned char *colorcube;
+static unsigned char *colorcube_d;
+
+static unsigned long
+xlib_get_prec_from_mask(unsigned long val)
+{
+ unsigned long retval = 0;
+ unsigned int cur_bit = 0;
+ /* walk through the number, incrementing the value if
+ the bit in question is set. */
+ while (cur_bit < (sizeof(unsigned long) * 8)) {
+ if ((val >> cur_bit) & 0x1) {
+ retval++;
+ }
+ cur_bit++;
+ }
+ return retval;
+}
+
+static unsigned long
+xlib_get_shift_from_mask(unsigned long val)
+{
+ unsigned long cur_bit = 0;
+ /* walk through the number, looking for the first 1 */
+ while (cur_bit < (sizeof(unsigned long) * 8)) {
+ if ((val >> cur_bit) & 0x1) {
+ return cur_bit;
+ }
+ cur_bit++;
+ }
+ return cur_bit;
+}
+
+
+static int
+xlib_rgb_cmap_fail (const char *msg, Colormap cmap, unsigned long *pixels)
+{
+ unsigned long free_pixels[256];
+ int n_free;
+ int i;
+
+#ifdef VERBOSE
+ printf ("%s", msg);
+#endif
+ n_free = 0;
+ for (i = 0; i < 256; i++)
+ if (pixels[i] < 256)
+ free_pixels[n_free++] = pixels[i];
+
+ if (n_free)
+ XFreeColors(image_info->display,
+ cmap,
+ free_pixels,
+ n_free,
+ 0);
+ return 0;
+}
+
+static void
+xlib_rgb_make_colorcube (unsigned long *pixels, int nr, int ng, int nb)
+{
+ unsigned char rt[16], gt[16], bt[16];
+ int i;
+
+ colorcube = malloc(sizeof(unsigned char) * 4096);
+ memset(colorcube, 0, (sizeof(unsigned char) * 4096));
+ for (i = 0; i < 16; i++)
+ {
+ rt[i] = ng * nb * ((i * 17 * (nr - 1) + 128) >> 8);
+ gt[i] = nb * ((i * 17 * (ng - 1) + 128) >> 8);
+ bt[i] = ((i * 17 * (nb - 1) + 128) >> 8);
+ }
+
+ for (i = 0; i < 4096; i++)
+ {
+ colorcube[i] = pixels[rt[i >> 8] + gt[(i >> 4) & 0x0f] + bt[i & 0x0f]];
+#ifdef VERBOSE
+ printf ("%03x %02x %x %x %x\n", i, colorcube[i], rt[i >> 8], gt[(i >> 4) & 0x0f], bt[i & 0x0f]);
+#endif
+ }
+}
+
+/* this is the colorcube suitable for dithering */
+static void
+xlib_rgb_make_colorcube_d (unsigned long *pixels, int nr, int ng, int nb)
+{
+ int r, g, b;
+ int i;
+
+ colorcube_d = malloc(sizeof(unsigned char) * 512);
+ memset(colorcube_d, 0, (sizeof(unsigned char) * 512));
+ for (i = 0; i < 512; i++)
+ {
+ r = MIN (nr - 1, i >> 6);
+ g = MIN (ng - 1, (i >> 3) & 7);
+ b = MIN (nb - 1, i & 7);
+ colorcube_d[i] = pixels[(r * ng + g) * nb + b];
+ }
+}
+
+/* Try installing a color cube of the specified size.
+ Make the colorcube and return TRUE on success */
+static int
+xlib_rgb_try_colormap (int nr, int ng, int nb)
+{
+ int r, g, b;
+ int ri, gi, bi;
+ int r0, g0, b0;
+ Colormap cmap;
+ XVisualInfo *visual;
+ XColor *colors = NULL;
+ XColor color;
+ unsigned long pixels[256];
+ unsigned long junk[256];
+ int i;
+ int d2;
+ unsigned int colors_needed;
+ int idx;
+ int best[256];
+
+ if (nr * ng * nb < xlib_rgb_min_colors)
+ return FALSE;
+
+ if (image_info->cmap_alloced) {
+ cmap = image_info->cmap;
+ visual = image_info->x_visual_info;
+ }
+ else {
+ cmap = image_info->default_colormap;
+ visual = image_info->x_visual_info;
+ }
+ colors_needed = nr * ng * nb;
+ for (i = 0; i < 256; i++)
+ {
+ best[i] = 192;
+ pixels[i] = 256;
+ }
+
+#ifndef GAMMA
+ if (!xlib_rgb_install_cmap) {
+ /* go out and get the colors for this colormap. */
+ colors = malloc(sizeof(XColor) * visual->colormap_size);
+ for (i=0; i < visual->colormap_size; i++){
+ colors[i].pixel = i;
+ }
+ XQueryColors (image_info->display,
+ cmap,
+ colors, visual->colormap_size);
+ /* find color cube colors that are already present */
+ for (i = 0; i < MIN (256, visual->colormap_size); i++)
+ {
+ r = colors[i].red >> 8;
+ g = colors[i].green >> 8;
+ b = colors[i].blue >> 8;
+ ri = (r * (nr - 1) + 128) >> 8;
+ gi = (g * (ng - 1) + 128) >> 8;
+ bi = (b * (nb - 1) + 128) >> 8;
+ r0 = ri * 255 / (nr - 1);
+ g0 = gi * 255 / (ng - 1);
+ b0 = bi * 255 / (nb - 1);
+ idx = ((ri * nr) + gi) * nb + bi;
+ d2 = (r - r0) * (r - r0) + (g - g0) * (g - g0) + (b - b0) * (b - b0);
+ if (d2 < best[idx]) {
+ if (pixels[idx] < 256)
+ XFreeColors(image_info->display,
+ cmap,
+ pixels + idx,
+ 1, 0);
+ else
+ colors_needed--;
+ color.pixel = colors[i].pixel;
+ color.red = colors[i].red;
+ color.green = colors[i].green;
+ color.blue = colors[i].blue;
+ color.flags = 0;
+ if (!XAllocColor(image_info->display, cmap, &color))
+ return xlib_rgb_cmap_fail ("error allocating system color\n",
+ cmap, pixels);
+ pixels[idx] = color.pixel; /* which is almost certainly i */
+ best[idx] = d2;
+ }
+ }
+ }
+
+#endif
+
+ if (colors_needed)
+ {
+ if (!XAllocColorCells(image_info->display, cmap, 0, NULL, 0, junk, colors_needed))
+ {
+ char tmp_str[80];
+
+ sprintf (tmp_str,
+ "%d %d %d colormap failed (in XAllocColorCells)\n",
+ nr, ng, nb);
+ return xlib_rgb_cmap_fail (tmp_str, cmap, pixels);
+ }
+ XFreeColors(image_info->display, cmap, junk, (int)colors_needed, 0);
+ }
+
+ for (r = 0, i = 0; r < nr; r++)
+ for (g = 0; g < ng; g++)
+ for (b = 0; b < nb; b++, i++)
+ {
+ if (pixels[i] == 256)
+ {
+ color.red = r * 65535 / (nr - 1);
+ color.green = g * 65535 / (ng - 1);
+ color.blue = b * 65535 / (nb - 1);
+
+#ifdef GAMMA
+ color.red = 65535 * pow (color.red / 65535.0, 0.5);
+ color.green = 65535 * pow (color.green / 65535.0, 0.5);
+ color.blue = 65535 * pow (color.blue / 65535.0, 0.5);
+#endif
+
+ /* This should be a raw XAllocColor call */
+ if (!XAllocColor(image_info->display, cmap, &color))
+ {
+ char tmp_str[80];
+
+ sprintf (tmp_str, "%d %d %d colormap failed\n",
+ nr, ng, nb);
+ return xlib_rgb_cmap_fail (tmp_str,
+ cmap, pixels);
+ }
+ pixels[i] = color.pixel;
+ }
+#ifdef VERBOSE
+ printf ("%d: %lx\n", i, pixels[i]);
+#endif
+ }
+
+ image_info->nred_shades = nr;
+ image_info->ngreen_shades = ng;
+ image_info->nblue_shades = nb;
+ xlib_rgb_make_colorcube (pixels, nr, ng, nb);
+ xlib_rgb_make_colorcube_d (pixels, nr, ng, nb);
+ if (colors)
+ free(colors);
+ return TRUE;
+}
+
+/* Return TRUE on success. */
+static Bool
+xlib_rgb_do_colormaps (void)
+{
+ static const int sizes[][3] = {
+ /* { 6, 7, 6 }, */
+ { 6, 6, 6 },
+ { 6, 6, 5 },
+ { 6, 6, 4 },
+ { 5, 5, 5 },
+ { 5, 5, 4 },
+ { 4, 4, 4 },
+ { 4, 4, 3 },
+ { 3, 3, 3 },
+ { 2, 2, 2 }
+ };
+ static const int n_sizes = sizeof(sizes) / (3 * sizeof(int));
+ int i;
+
+ for (i = 0; i < n_sizes; i++)
+ if (xlib_rgb_try_colormap (sizes[i][0], sizes[i][1], sizes[i][2]))
+ return TRUE;
+ return FALSE;
+}
+
+/* Make a 2 x 2 x 2 colorcube */
+static void
+xlib_rgb_colorcube_222 (void)
+{
+ int i;
+ XColor color;
+ Colormap cmap;
+
+ if (image_info->cmap_alloced)
+ cmap = image_info->cmap;
+ else
+ cmap = image_info->default_colormap;
+
+ colorcube_d = malloc(sizeof(unsigned char) * 512);
+
+ for (i = 0; i < 8; i++)
+ {
+ color.red = ((i & 4) >> 2) * 65535;
+ color.green = ((i & 2) >> 1) * 65535;
+ color.blue = (i & 1) * 65535;
+ XAllocColor (image_info->display, cmap, &color);
+ colorcube_d[((i & 4) << 4) | ((i & 2) << 2) | (i & 1)] = color.pixel;
+ }
+}
+
+void
+xlib_rgb_set_verbose (Bool verbose)
+{
+ xlib_rgb_verbose = verbose;
+}
+
+void
+xlib_rgb_set_install (Bool install)
+{
+ xlib_rgb_install_cmap = install;
+}
+
+void
+xlib_rgb_set_min_colors (int min_colors)
+{
+ xlib_rgb_min_colors = min_colors;
+}
+
+/* Return a "score" based on the following criteria (in hex):
+
+ x000 is the quality - 1 is 1bpp, 2 is 4bpp,
+ 4 is 8bpp,
+ 7 is 15bpp truecolor, 8 is 16bpp truecolor,
+ 9 is 24bpp truecolor.
+ 0x00 is the speed - 1 is the normal case,
+ 2 means faster than normal
+ 00x0 gets a point for being the system visual
+ 000x gets a point for being pseudocolor
+
+ A caveat: in the 8bpp modes, being the system visual seems to be
+ quite important. Thus, all of the 8bpp modes should be ranked at
+ the same speed.
+*/
+
+static guint32
+xlib_rgb_score_visual (XVisualInfo *visual)
+{
+ guint32 quality, speed, pseudo, sys;
+ static const char* visual_names[] =
+ {
+ "static gray",
+ "grayscale",
+ "static color",
+ "pseudo color",
+ "true color",
+ "direct color",
+ };
+
+
+ quality = 0;
+ speed = 1;
+ sys = 0;
+ if (visual->class == TrueColor ||
+ visual->class == DirectColor)
+ {
+ if (visual->depth == 24)
+ {
+ quality = 9;
+ /* Should test for MSB visual here, and set speed if so. */
+ }
+ else if (visual->depth == 16)
+ quality = 8;
+ else if (visual->depth == 15)
+ quality = 7;
+ else if (visual->depth == 8)
+ quality = 4;
+ }
+ else if (visual->class == PseudoColor ||
+ visual->class == StaticColor)
+ {
+ if (visual->depth == 8)
+ quality = 4;
+ else if (visual->depth == 4)
+ quality = 2;
+ else if (visual->depth == 1)
+ quality = 1;
+ }
+ else if (visual->class == StaticGray
+#ifdef ENABLE_GRAYSCALE
+ || visual->class == GrayScale
+#endif
+ )
+ {
+ if (visual->depth == 8)
+ quality = 4;
+ else if (visual->depth == 4)
+ quality = 2;
+ else if (visual->depth == 1)
+ quality = 1;
+ }
+
+ if (quality == 0)
+ return 0;
+
+ sys = (visual->visualid == image_info->default_visualid->visualid);
+
+ pseudo = (visual->class == PseudoColor || visual->class == TrueColor);
+
+ if (xlib_rgb_verbose)
+ printf ("Visual 0x%x, type = %s, depth = %d, %ld:%ld:%ld%s; score=%x\n",
+ (int)visual->visualid,
+ visual_names[visual->class],
+ visual->depth,
+ visual->red_mask,
+ visual->green_mask,
+ visual->blue_mask,
+ sys ? " (system)" : "",
+ (quality << 12) | (speed << 8) | (sys << 4) | pseudo);
+
+ return (quality << 12) | (speed << 8) | (sys << 4) | pseudo;
+}
+
+static void
+xlib_rgb_choose_visual (void)
+{
+ XVisualInfo *visuals;
+ XVisualInfo *visual;
+ XVisualInfo *best_visual;
+ XVisualInfo *final_visual;
+ XVisualInfo template;
+ int num_visuals;
+ guint32 score, best_score;
+ int cur_visual = 1;
+ int i;
+
+ template.screen = image_info->screen_num;
+ visuals = XGetVisualInfo(image_info->display, VisualScreenMask,
+ &template, &num_visuals);
+
+ best_visual = visuals;
+ best_score = xlib_rgb_score_visual (best_visual);
+
+ for (i = cur_visual; i < num_visuals; i++)
+ {
+ visual = &visuals[i];
+ score = xlib_rgb_score_visual (visual);
+ if (score > best_score)
+ {
+ best_score = score;
+ best_visual = visual;
+ }
+ }
+ /* make a copy of the visual so that we can free
+ the allocated visual list above. */
+ final_visual = malloc(sizeof(XVisualInfo));
+ memcpy(final_visual, best_visual, sizeof(XVisualInfo));
+ image_info->x_visual_info = final_visual;
+ XFree(visuals);
+ /* set up the shift and the precision for the red, green and blue.
+ this only applies to cool visuals like true color and direct color. */
+ if (image_info->x_visual_info->class == TrueColor ||
+ image_info->x_visual_info->class == DirectColor) {
+ image_info->red_shift = xlib_get_shift_from_mask(image_info->x_visual_info->red_mask);
+ image_info->red_prec = xlib_get_prec_from_mask(image_info->x_visual_info->red_mask);
+ image_info->green_shift = xlib_get_shift_from_mask(image_info->x_visual_info->green_mask);
+ image_info->green_prec = xlib_get_prec_from_mask(image_info->x_visual_info->green_mask);
+ image_info->blue_shift = xlib_get_shift_from_mask(image_info->x_visual_info->blue_mask);
+ image_info->blue_prec = xlib_get_prec_from_mask(image_info->x_visual_info->blue_mask);
+ }
+}
+
+static void
+xlib_rgb_choose_visual_for_xprint (int aDepth)
+{
+ XVisualInfo *visuals;
+ XVisualInfo *visual;
+ XVisualInfo *best_visual;
+ XVisualInfo *final_visual;
+ XVisualInfo template;
+ int num_visuals;
+ int cur_visual = 1;
+ int i;
+
+ XWindowAttributes win_att;
+ Status ret_stat;
+ Visual *root_visual;
+
+ ret_stat = XGetWindowAttributes(image_info->display,
+ RootWindow(image_info->display, image_info->screen_num),
+ &win_att);
+ root_visual = win_att.visual;
+ template.screen = image_info->screen_num;
+ visuals = XGetVisualInfo(image_info->display, VisualScreenMask,
+ &template, &num_visuals);
+
+ best_visual = visuals;
+ if (best_visual->visual != root_visual) {
+ for (i = cur_visual; i < num_visuals; i++) {
+ visual = &visuals[i];
+ if (visual->visual == root_visual) {
+ best_visual = visual;
+ break;
+ }
+ }
+ }
+ /* make a copy of the visual so that we can free
+ the allocated visual list above. */
+ final_visual = malloc(sizeof(XVisualInfo));
+ memcpy(final_visual, best_visual, sizeof(XVisualInfo));
+ image_info->x_visual_info = final_visual;
+ XFree(visuals);
+ /* set up the shift and the precision for the red, green and blue.
+ this only applies to cool visuals like true color and direct color. */
+ if (image_info->x_visual_info->class == TrueColor ||
+ image_info->x_visual_info->class == DirectColor) {
+ image_info->red_shift = xlib_get_shift_from_mask(image_info->x_visual_info->red_mask);
+ image_info->red_prec = xlib_get_prec_from_mask(image_info->x_visual_info->red_mask);
+ image_info->green_shift = xlib_get_shift_from_mask(image_info->x_visual_info->green_mask);
+ image_info->green_prec = xlib_get_prec_from_mask(image_info->x_visual_info->green_mask);
+ image_info->blue_shift = xlib_get_shift_from_mask(image_info->x_visual_info->blue_mask);
+ image_info->blue_prec = xlib_get_prec_from_mask(image_info->x_visual_info->blue_mask);
+ }
+}
+
+static void xlib_rgb_select_conv (XImage *image, ByteOrder byte_order);
+
+static void
+xlib_rgb_set_gray_cmap (Colormap cmap)
+{
+ int i;
+ XColor color;
+ int status;
+ unsigned long pixels[256];
+ int r, g, b, gray;
+
+ for (i = 0; i < 256; i++)
+ {
+ color.pixel = i;
+ color.red = i * 257;
+ color.green = i * 257;
+ color.blue = i * 257;
+ status = XAllocColor(image_info->display, cmap, &color);
+ pixels[i] = color.pixel;
+#ifdef VERBOSE
+ printf ("allocating pixel %d, %x %x %x, result %d\n",
+ color.pixel, color.red, color.green, color.blue, status);
+#endif
+ }
+
+ /* Now, we make fake colorcubes - we ultimately just use the pseudocolor
+ methods. */
+
+ colorcube = malloc(sizeof(unsigned char) * 4096);
+
+ for (i = 0; i < 4096; i++)
+ {
+ r = (i >> 4) & 0xf0;
+ r = r | r >> 4;
+ g = i & 0xf0;
+ g = g | g >> 4;
+ b = (i << 4 & 0xf0);
+ b = b | b >> 4;
+ gray = (g + ((r + b) >> 1)) >> 1;
+ colorcube[i] = pixels[gray];
+ }
+}
+
+/**
+ * xlib_rgb_init:
+ * @display: X Display to use.
+ * @screen: Screen to use.
+ *
+ * Initializes the XlibRGB machinery with the default depth. If you use this
+ * function XlibRGB will automatically pick the best visual available on your
+ * display. This function or xlib_rgb_init_with_depth() must be called before
+ * using any of the other functions in XlibRGB.
+ **/
+void
+xlib_rgb_init (Display *display, Screen *screen)
+{
+ int prefDepth = -1; // let the function do the visual scoring
+ xlib_rgb_init_with_depth(display, screen, prefDepth);
+}
+
+/**
+ * xlib_rgb_init_with_depth:
+ * @display: X display to use.
+ * @screen: Screen to use.
+ * @prefDepth: Visual depth to use for color substitution tables. This must
+ * be one of the supported visual depths in the specified @display.
+ *
+ * Initializes the XlibRGB machinery with a particular depth you specify,
+ * instead of automatically picking the best depth in the display. This
+ * function or xlib_rgb_init() must be called before using any of the other
+ * functions in XlibRGB.
+ **/
+void
+xlib_rgb_init_with_depth (Display *display, Screen *screen, int prefDepth)
+{
+ int i;
+ static const int byte_order[1] = { 1 };
+
+ static int initialized = 0;
+
+ if (initialized)
+ {
+ return;
+ }
+
+ initialized = 1;
+
+ /* check endian sanity */
+#if G_BYTE_ORDER == G_BIG_ENDIAN
+ if (((char *)byte_order)[0] == 1) {
+ printf ("xlib_rgb_init: compiled for big endian, but this is a little endian machine.\n\n");
+ exit(1);
+ }
+#else
+ if (((char *)byte_order)[0] != 1) {
+ printf ("xlib_rgb_init: compiled for little endian, but this is a big endian machine.\n\n");
+ exit(1);
+ }
+#endif
+
+ if (image_info == NULL)
+ {
+ image_info = malloc(sizeof(XlibRgbInfo));
+ memset(image_info, 0, sizeof(XlibRgbInfo));
+
+ image_info->display = display;
+ image_info->screen = screen;
+ image_info->screen_num = XScreenNumberOfScreen(screen);
+ image_info->x_visual_info = NULL;
+ image_info->cmap = 0;
+ image_info->default_visualid = DefaultVisual(display, image_info->screen_num);
+ image_info->default_colormap = DefaultColormap(display, image_info->screen_num);
+
+ image_info->color_pixels = NULL;
+ image_info->gray_pixels = NULL;
+ image_info->reserved_pixels = NULL;
+
+ image_info->nred_shades = 6;
+ image_info->ngreen_shades = 6;
+ image_info->nblue_shades = 4;
+ image_info->ngray_shades = 24;
+ image_info->nreserved = 0;
+
+ image_info->bpp = 0;
+ image_info->cmap_alloced = FALSE;
+ image_info->gamma_val = 1.0;
+
+ image_info->stage_buf = NULL;
+
+ image_info->own_gc = 0;
+
+ image_info->red_shift = 0;
+ image_info->red_prec = 0;
+ image_info->green_shift = 0;
+ image_info->green_prec = 0;
+ image_info->blue_shift = 0;
+ image_info->blue_prec = 0;
+
+ if (prefDepth != -1)
+ xlib_rgb_choose_visual_for_xprint (prefDepth);
+ else
+ xlib_rgb_choose_visual ();
+
+ if ((image_info->x_visual_info->class == PseudoColor ||
+ image_info->x_visual_info->class == StaticColor) &&
+ image_info->x_visual_info->depth < 8 &&
+ image_info->x_visual_info->depth >= 3)
+ {
+ image_info->cmap = image_info->default_colormap;
+ xlib_rgb_colorcube_222 ();
+ }
+ else if (image_info->x_visual_info->class == PseudoColor)
+ {
+ if (xlib_rgb_install_cmap ||
+ image_info->x_visual_info->visualid != image_info->default_visualid->visualid)
+ {
+ image_info->cmap = XCreateColormap(image_info->display,
+ RootWindow(image_info->display, image_info->screen_num),
+ image_info->x_visual_info->visual,
+ AllocNone);
+ image_info->cmap_alloced = TRUE;
+ }
+ if (!xlib_rgb_do_colormaps ())
+ {
+ image_info->cmap = XCreateColormap(image_info->display,
+ RootWindow(image_info->display, image_info->screen_num),
+ image_info->x_visual_info->visual,
+ AllocNone);
+ image_info->cmap_alloced = TRUE;
+ xlib_rgb_do_colormaps ();
+ }
+ if (xlib_rgb_verbose)
+ printf ("color cube: %d x %d x %d\n",
+ image_info->nred_shades,
+ image_info->ngreen_shades,
+ image_info->nblue_shades);
+
+ if (!image_info->cmap_alloced)
+ image_info->cmap = image_info->default_colormap;
+ }
+#ifdef ENABLE_GRAYSCALE
+ else if (image_info->x_visual_info->class == GrayScale)
+ {
+ image_info->cmap = XCreateColormap(image_info->display,
+ RootWindow(image_info->display, image_info->screen_num),
+ image_info->x_visual_info->visual,
+ AllocNone);
+ xlib_rgb_set_gray_cmap (image_info->cmap);
+ image_info->cmap_alloced = TRUE;
+ }
+#endif
+ else
+ {
+ /* Always install colormap in direct color. */
+ if (image_info->x_visual_info->class != DirectColor &&
+ image_info->x_visual_info->visualid == image_info->default_visualid->visualid)
+ image_info->cmap = image_info->default_colormap;
+ else
+ {
+ image_info->cmap = XCreateColormap(image_info->display,
+ RootWindow(image_info->display, image_info->screen_num),
+ image_info->x_visual_info->visual,
+ AllocNone);
+ image_info->cmap_alloced = TRUE;
+ }
+ }
+
+ image_info->bitmap = (image_info->x_visual_info->depth == 1);
+
+ for (i = 0; i < N_IMAGES; i++) {
+ if (image_info->bitmap) {
+ /* Use malloc() instead of g_malloc since X will free() this mem */
+ static_image[i] = XCreateImage(image_info->display,
+ image_info->x_visual_info->visual,
+ 1,
+ XYBitmap,
+ 0, 0, IMAGE_WIDTH, IMAGE_HEIGHT,
+ 8,
+ 0);
+ static_image[i]->data = malloc(IMAGE_WIDTH * IMAGE_HEIGHT >> 3);
+ static_image[i]->bitmap_bit_order = MSBFirst;
+ static_image[i]->byte_order = MSBFirst;
+ }
+ else {
+ static_image[i] = XCreateImage(image_info->display,
+ image_info->x_visual_info->visual,
+ (unsigned int)image_info->x_visual_info->depth,
+ ZPixmap,
+ 0, 0,
+ IMAGE_WIDTH,
+ IMAGE_HEIGHT,
+ 32, 0);
+ /* remove this when we are using shared memory.. */
+ static_image[i]->data = malloc((size_t)IMAGE_WIDTH * IMAGE_HEIGHT * image_info->x_visual_info->depth);
+ static_image[i]->bitmap_bit_order = MSBFirst;
+ static_image[i]->byte_order = MSBFirst;
+ }
+ }
+ /* ok, so apparently, image_info->bpp is actually
+ BYTES per pixel. What fun! */
+ switch (static_image[0]->bits_per_pixel) {
+ case 1:
+ case 8:
+ image_info->bpp = 1;
+ break;
+ case 16:
+ image_info->bpp = 2;
+ break;
+ case 24:
+ image_info->bpp = 3;
+ break;
+ case 32:
+ image_info->bpp = 4;
+ break;
+ }
+ xlib_rgb_select_conv (static_image[0], MSB_FIRST);
+ }
+}
+
+/**
+ * xlib_rgb_xpixel_from_rgb:
+ * @rgb: 32-bit representation of an RGB value, specified as 0x00RRGGBB.
+ *
+ * Converts an RGB triplet into the closest color that XlibRGB visual can
+ * handle.
+ *
+ * Return value: X pixel value that corresponds to the closest color in the
+ * XlibRGB visual and colormap.
+ **/
+unsigned long
+xlib_rgb_xpixel_from_rgb (guint32 rgb)
+{
+ unsigned long pixel = 0;
+
+ if (image_info->bitmap)
+ {
+ return ((rgb & 0xff0000) >> 16) +
+ ((rgb & 0xff00) >> 7) +
+ (rgb & 0xff) > 510;
+ }
+ else if (image_info->x_visual_info->class == PseudoColor)
+ pixel = colorcube[((rgb & 0xf00000) >> 12) |
+ ((rgb & 0xf000) >> 8) |
+ ((rgb & 0xf0) >> 4)];
+ else if (image_info->x_visual_info->depth < 8 &&
+ image_info->x_visual_info->class == StaticColor)
+ {
+ pixel = colorcube_d[((rgb & 0x800000) >> 17) |
+ ((rgb & 0x8000) >> 12) |
+ ((rgb & 0x80) >> 7)];
+ }
+ else if (image_info->x_visual_info->class == TrueColor ||
+ image_info->x_visual_info->class == DirectColor)
+ {
+#ifdef VERBOSE
+ printf ("shift, prec: r %d %d g %d %d b %d %d\n",
+ image_info->red_shift,
+ image_info->red_prec,
+ image_info->green_shift,
+ image_info->green_prec,
+ image_info->blue_shift,
+ image_info->blue_prec);
+#endif
+
+ pixel = (((((rgb & 0xff0000) >> 16) >>
+ (8 - image_info->red_prec)) <<
+ image_info->red_shift) +
+ ((((rgb & 0xff00) >> 8) >>
+ (8 - image_info->green_prec)) <<
+ image_info->green_shift) +
+ (((rgb & 0xff) >>
+ (8 - image_info->blue_prec)) <<
+ image_info->blue_shift));
+ }
+ else if (image_info->x_visual_info->class == StaticGray ||
+ image_info->x_visual_info->class == GrayScale)
+ {
+ int gray = ((rgb & 0xff0000) >> 16) +
+ ((rgb & 0xff00) >> 7) +
+ (rgb & 0xff);
+
+ return gray >> (10 - image_info->x_visual_info->depth);
+ }
+
+ return pixel;
+}
+
+/**
+ * xlib_rgb_gc_set_foreground:
+ * @gc: A graphic context.
+ * @rgb: 32-bit representation of an RGB value, specified as 0x00RRGGBB.
+ *
+ * This is a convenience function to set the foreground of a GC from an RGB
+ * triplet. It calls xlib_rgb_xpixel_from_rgb() internally and uses the
+ * returned pixel value to set the GC's foreground.
+ **/
+void
+xlib_rgb_gc_set_foreground (GC gc, guint32 rgb)
+{
+ unsigned long color;
+
+ color = xlib_rgb_xpixel_from_rgb (rgb);
+ XSetForeground(image_info->display, gc, color);
+}
+
+/**
+ * xlib_rgb_gc_set_foreground:
+ * @gc: A graphic context.
+ * @rgb: 32-bit representation of an RGB value, specified as 0x00RRGGBB.
+ *
+ * This is a convenience function to set the background of a GC from an RGB
+ * triplet. It calls xlib_rgb_xpixel_from_rgb() internally and uses the
+ * returned pixel value to set the GC's background.
+ **/
+void
+xlib_rgb_gc_set_background (GC gc, guint32 rgb)
+{
+ unsigned long color;
+
+ color = xlib_rgb_xpixel_from_rgb (rgb);
+ XSetBackground(image_info->display, gc, color);
+}
+
+#if G_BYTE_ORDER == G_LITTLE_ENDIAN
+#define HAIRY_CONVERT_8
+#endif
+
+#ifdef HAIRY_CONVERT_8
+static void
+xlib_rgb_convert_8 (XImage *image,
+ int ax, int ay, int width, int height,
+ unsigned char *buf, int rowstride,
+ int x_align, int y_align, XlibRgbCmap *cmap)
+{
+ int x, y;
+ int bpl;
+ unsigned char *obuf, *obptr;
+ unsigned char *bptr, *bp2;
+ int r, g, b;
+
+ bptr = buf;
+ bpl = image->bytes_per_line;
+ obuf = ((unsigned char *)image->data) + ay * bpl + ax;
+ for (y = 0; y < height; y++)
+ {
+ bp2 = bptr;
+ obptr = obuf;
+ if (((unsigned long)obuf | (unsigned long) bp2) & 3)
+ {
+ for (x = 0; x < width; x++)
+ {
+ r = *bp2++;
+ g = *bp2++;
+ b = *bp2++;
+ obptr[0] = colorcube[((r & 0xf0) << 4) |
+ (g & 0xf0) |
+ (b >> 4)];
+ obptr++;
+ }
+ }
+ else
+ {
+ for (x = 0; x < width - 3; x += 4)
+ {
+ guint32 r1b0g0r0;
+ guint32 g2r2b1g1;
+ guint32 b3g3r3b2;
+
+ r1b0g0r0 = ((guint32 *)bp2)[0];
+ g2r2b1g1 = ((guint32 *)bp2)[1];
+ b3g3r3b2 = ((guint32 *)bp2)[2];
+ ((guint32 *)obptr)[0] =
+ colorcube[((r1b0g0r0 & 0xf0) << 4) |
+ ((r1b0g0r0 & 0xf000) >> 8) |
+ ((r1b0g0r0 & 0xf00000) >> 20)] |
+ (colorcube[((r1b0g0r0 & 0xf0000000) >> 20) |
+ (g2r2b1g1 & 0xf0) |
+ ((g2r2b1g1 & 0xf000) >> 12)] << 8) |
+ (colorcube[((g2r2b1g1 & 0xf00000) >> 12) |
+ ((g2r2b1g1 & 0xf0000000) >> 24) |
+ ((b3g3r3b2 & 0xf0) >> 4)] << 16) |
+ (colorcube[((b3g3r3b2 & 0xf000) >> 4) |
+ ((b3g3r3b2 & 0xf00000) >> 16) |
+ (b3g3r3b2 >> 28)] << 24);
+ bp2 += 12;
+ obptr += 4;
+ }
+ for (; x < width; x++)
+ {
+ r = *bp2++;
+ g = *bp2++;
+ b = *bp2++;
+ obptr[0] = colorcube[((r & 0xf0) << 4) |
+ (g & 0xf0) |
+ (b >> 4)];
+ obptr++;
+ }
+ }
+ bptr += rowstride;
+ obuf += bpl;
+ }
+}
+#else
+static void
+xlib_rgb_convert_8 (XImage *image,
+ int ax, int ay, int width, int height,
+ unsigned char *buf, int rowstride,
+ int x_align, int y_align, XlibRgbCmap *cmap)
+{
+ int x, y;
+ int bpl;
+ unsigned char *obuf, *obptr;
+ unsigned char *bptr, *bp2;
+ int r, g, b;
+
+ bptr = buf;
+ bpl = image->bytes_per_line;
+ obuf = ((unsigned char *)image->data) + ay * bpl + ax;
+ for (y = 0; y < height; y++)
+ {
+ bp2 = bptr;
+ obptr = obuf;
+ for (x = 0; x < width; x++)
+ {
+ r = *bp2++;
+ g = *bp2++;
+ b = *bp2++;
+ obptr[0] = colorcube[((r & 0xf0) << 4) |
+ (g & 0xf0) |
+ (b >> 4)];
+ obptr++;
+ }
+ bptr += rowstride;
+ obuf += bpl;
+ }
+}
+#endif
+
+#if 1
+
+/* This dither table was generated by Raph Levien using patented
+ technology (US Patent 5,276,535). The dither table itself is in the
+ public domain. */
+
+#define DM_WIDTH 128
+#define DM_WIDTH_SHIFT 7
+#define DM_HEIGHT 128
+static const unsigned char DM[128][128] =
+{
+ { 0, 41, 23, 5, 17, 39, 7, 15, 62, 23, 40, 51, 31, 47, 9, 32, 52, 27, 57, 25, 6, 61, 27, 52, 37, 7, 40, 63, 18, 36, 10, 42, 25, 62, 45, 34, 20, 42, 37, 14, 35, 29, 50, 10, 61, 2, 40, 8, 37, 12, 58, 22, 5, 41, 10, 39, 0, 60, 11, 46, 2, 55, 38, 17, 36, 59, 13, 54, 37, 56, 8, 29, 16, 13, 63, 22, 41, 55, 7, 20, 49, 14, 23, 55, 37, 23, 19, 36, 15, 49, 23, 63, 30, 14, 38, 27, 53, 13, 22, 41, 19, 31, 7, 19, 50, 30, 49, 16, 3, 32, 56, 40, 29, 34, 8, 48, 19, 45, 4, 51, 12, 46, 35, 49, 16, 42, 12, 62 },
+ { 30, 57, 36, 54, 47, 34, 52, 27, 43, 4, 28, 7, 17, 36, 62, 13, 44, 7, 18, 48, 33, 21, 44, 14, 30, 47, 12, 33, 5, 55, 31, 58, 13, 30, 4, 17, 52, 10, 60, 26, 46, 0, 39, 27, 42, 22, 47, 25, 60, 32, 9, 38, 48, 17, 59, 30, 49, 18, 34, 25, 51, 19, 5, 48, 21, 8, 28, 46, 1, 32, 41, 19, 54, 47, 37, 18, 28, 11, 44, 30, 39, 56, 2, 33, 8, 42, 61, 28, 58, 8, 46, 9, 41, 4, 58, 7, 21, 48, 59, 10, 52, 14, 42, 57, 12, 25, 7, 53, 42, 24, 11, 50, 17, 59, 42, 2, 36, 60, 32, 17, 63, 29, 21, 7, 59, 32, 24, 39 },
+ { 22, 8, 16, 32, 3, 25, 13, 57, 18, 45, 58, 39, 55, 20, 5, 42, 23, 34, 63, 1, 51, 10, 58, 4, 60, 23, 53, 27, 44, 21, 3, 48, 8, 50, 43, 54, 27, 32, 5, 55, 21, 58, 12, 53, 6, 36, 14, 50, 17, 29, 53, 15, 24, 52, 7, 36, 13, 42, 4, 53, 9, 35, 61, 26, 56, 32, 49, 15, 62, 23, 6, 60, 2, 31, 4, 48, 58, 38, 15, 61, 5, 25, 47, 28, 50, 15, 7, 40, 3, 32, 33, 52, 25, 50, 35, 42, 61, 3, 28, 36, 23, 63, 4, 33, 46, 62, 36, 23, 60, 6, 54, 28, 4, 37, 23, 55, 25, 8, 42, 54, 14, 6, 56, 38, 19, 52, 4, 46 },
+ { 48, 53, 43, 12, 45, 63, 30, 37, 9, 34, 21, 1, 25, 47, 29, 58, 3, 54, 15, 39, 29, 17, 38, 35, 20, 43, 1, 49, 15, 59, 29, 39, 22, 35, 16, 23, 1, 47, 39, 18, 8, 44, 25, 31, 57, 19, 63, 4, 45, 3, 42, 61, 1, 31, 45, 20, 57, 29, 62, 21, 32, 41, 14, 44, 3, 39, 5, 34, 10, 43, 51, 35, 23, 52, 40, 10, 21, 1, 53, 18, 51, 43, 12, 62, 18, 54, 26, 51, 20, 57, 14, 1, 62, 16, 11, 18, 32, 39, 17, 44, 1, 48, 26, 37, 18, 2, 51, 14, 28, 45, 35, 18, 57, 13, 47, 11, 51, 20, 2, 39, 31, 47, 25, 1, 50, 11, 60, 7 },
+ { 18, 28, 1, 56, 21, 10, 51, 2, 46, 54, 14, 61, 11, 50, 13, 38, 19, 31, 45, 9, 55, 24, 47, 5, 54, 9, 62, 11, 35, 8, 51, 14, 57, 6, 63, 40, 58, 14, 51, 28, 62, 34, 15, 48, 1, 41, 30, 35, 55, 21, 34, 11, 49, 37, 8, 52, 4, 23, 15, 43, 1, 58, 11, 23, 53, 16, 55, 26, 58, 18, 27, 12, 45, 14, 25, 63, 42, 33, 27, 35, 9, 31, 21, 38, 1, 44, 34, 12, 48, 38, 21, 44, 29, 47, 26, 53, 1, 46, 54, 8, 59, 29, 11, 55, 22, 41, 33, 20, 39, 1, 48, 9, 44, 32, 5, 62, 29, 44, 57, 23, 10, 58, 34, 43, 15, 37, 26, 33 },
+ { 51, 38, 59, 24, 35, 42, 19, 60, 5, 32, 41, 26, 43, 33, 7, 53, 48, 11, 59, 23, 42, 2, 61, 30, 16, 40, 32, 24, 56, 41, 19, 33, 37, 26, 47, 9, 31, 22, 2, 45, 9, 54, 4, 37, 21, 52, 11, 23, 7, 57, 16, 25, 55, 18, 63, 27, 46, 39, 56, 10, 50, 37, 29, 47, 19, 63, 24, 9, 46, 2, 39, 60, 9, 57, 30, 7, 49, 11, 59, 3, 45, 57, 5, 60, 29, 22, 5, 60, 30, 9, 59, 18, 40, 6, 57, 36, 30, 12, 24, 34, 15, 40, 52, 6, 49, 9, 58, 4, 63, 12, 26, 61, 22, 53, 38, 16, 35, 14, 28, 50, 42, 17, 5, 28, 62, 20, 54, 12 },
+ { 26, 6, 31, 15, 49, 6, 38, 27, 22, 49, 16, 56, 2, 62, 30, 21, 0, 36, 28, 6, 49, 32, 13, 52, 26, 50, 19, 46, 3, 26, 62, 0, 53, 12, 29, 3, 53, 41, 60, 24, 38, 13, 58, 16, 43, 9, 59, 39, 46, 28, 44, 40, 2, 33, 13, 41, 16, 6, 47, 31, 26, 17, 57, 6, 38, 0, 42, 36, 29, 52, 20, 31, 48, 0, 34, 56, 20, 36, 23, 54, 14, 41, 24, 37, 10, 55, 46, 25, 16, 45, 36, 4, 55, 23, 15, 8, 50, 62, 5, 56, 44, 20, 13, 28, 59, 31, 24, 47, 31, 52, 37, 17, 40, 0, 26, 49, 3, 60, 7, 33, 0, 61, 53, 40, 8, 45, 2, 41 },
+ { 16, 63, 43, 4, 61, 24, 56, 13, 53, 8, 36, 12, 24, 41, 16, 46, 60, 26, 52, 39, 14, 57, 21, 37, 0, 45, 7, 59, 38, 17, 43, 10, 45, 20, 61, 43, 19, 11, 33, 17, 50, 32, 23, 61, 28, 49, 26, 0, 18, 51, 5, 60, 22, 58, 29, 0, 59, 34, 19, 62, 3, 52, 7, 44, 30, 59, 13, 50, 15, 62, 7, 17, 38, 22, 44, 15, 40, 4, 47, 28, 33, 17, 49, 16, 51, 40, 10, 56, 0, 53, 13, 49, 28, 38, 60, 21, 43, 19, 37, 27, 3, 51, 34, 39, 0, 45, 15, 43, 10, 21, 3, 55, 8, 33, 59, 10, 41, 18, 52, 24, 46, 20, 30, 13, 58, 22, 36, 57 },
+ { 50, 34, 11, 47, 29, 17, 44, 0, 33, 63, 28, 46, 52, 5, 57, 10, 42, 18, 4, 63, 20, 8, 44, 10, 56, 34, 14, 29, 5, 54, 23, 59, 32, 49, 7, 34, 49, 27, 56, 0, 42, 7, 46, 3, 40, 6, 54, 32, 62, 13, 36, 10, 47, 8, 35, 49, 24, 51, 12, 40, 22, 35, 60, 12, 22, 51, 33, 4, 40, 25, 43, 55, 5, 54, 12, 61, 26, 51, 8, 62, 0, 53, 7, 63, 2, 32, 19, 34, 42, 24, 31, 63, 2, 10, 45, 33, 0, 48, 9, 61, 22, 47, 8, 62, 18, 56, 7, 54, 27, 57, 46, 30, 50, 19, 45, 30, 56, 36, 22, 47, 11, 38, 3, 51, 32, 48, 18, 9 },
+ { 0, 21, 40, 19, 52, 9, 37, 48, 20, 40, 3, 18, 27, 38, 35, 22, 31, 56, 13, 35, 46, 28, 60, 40, 27, 18, 61, 50, 41, 30, 7, 36, 2, 25, 16, 57, 5, 15, 47, 29, 55, 19, 30, 52, 15, 34, 20, 12, 43, 30, 20, 54, 25, 44, 53, 12, 38, 5, 55, 27, 48, 15, 33, 27, 45, 8, 19, 28, 56, 11, 33, 49, 18, 36, 29, 2, 45, 16, 39, 19, 31, 43, 27, 35, 20, 52, 26, 6, 61, 11, 41, 17, 29, 51, 20, 56, 25, 32, 41, 17, 53, 31, 25, 14, 42, 23, 35, 16, 38, 6, 34, 12, 15, 62, 6, 21, 13, 1, 63, 9, 55, 27, 43, 25, 14, 4, 31, 55 },
+ { 44, 29, 61, 2, 35, 58, 26, 15, 60, 10, 51, 59, 14, 55, 8, 50, 2, 44, 25, 51, 1, 33, 16, 4, 48, 36, 2, 21, 12, 57, 48, 13, 51, 55, 40, 28, 37, 62, 8, 39, 12, 63, 36, 10, 59, 24, 56, 47, 9, 50, 41, 1, 32, 17, 6, 21, 61, 30, 9, 43, 1, 54, 41, 2, 54, 37, 48, 61, 1, 46, 21, 3, 58, 24, 50, 32, 60, 10, 57, 25, 46, 12, 59, 4, 45, 13, 57, 47, 27, 39, 5, 58, 47, 14, 35, 4, 52, 13, 60, 6, 36, 10, 45, 55, 4, 50, 29, 2, 61, 50, 25, 58, 44, 24, 36, 42, 54, 28, 40, 32, 16, 56, 6, 62, 46, 39, 60, 23 },
+ { 7, 48, 14, 54, 23, 40, 4, 45, 30, 22, 42, 32, 1, 44, 20, 29, 58, 8, 37, 19, 41, 54, 24, 58, 9, 53, 25, 46, 34, 16, 23, 38, 27, 11, 18, 1, 52, 21, 35, 22, 48, 5, 25, 45, 18, 38, 2, 27, 35, 4, 57, 15, 62, 39, 57, 28, 42, 16, 36, 60, 24, 18, 10, 63, 20, 5, 16, 23, 37, 14, 59, 27, 41, 8, 13, 42, 21, 35, 6, 50, 3, 38, 15, 48, 30, 39, 17, 3, 49, 14, 53, 33, 24, 7, 61, 44, 11, 39, 23, 49, 19, 58, 1, 32, 36, 12, 60, 41, 20, 13, 41, 4, 39, 1, 48, 8, 18, 51, 14, 44, 5, 37, 21, 34, 1, 26, 10, 37 },
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+ { 52, 28, 39, 16, 54, 19, 29, 55, 42, 20, 58, 33, 24, 63, 18, 55, 39, 62, 43, 34, 12, 40, 6, 35, 2, 25, 8, 62, 34, 1, 31, 42, 61, 27, 53, 24, 40, 61, 34, 8, 59, 4, 30, 56, 40, 6, 53, 42, 10, 48, 16, 37, 12, 46, 21, 36, 47, 11, 28, 45, 22, 10, 57, 2, 49, 31, 14, 44, 61, 11, 25, 6, 23, 63, 18, 36, 28, 56, 20, 51, 11, 48, 27, 56, 32, 22, 45, 30, 2, 42, 27, 39, 1, 44, 23, 31, 38, 22, 11, 61, 43, 54, 4, 47, 35, 2, 44, 16, 28, 54, 12, 62, 18, 43, 10, 52, 1, 58, 33, 15, 29, 56, 20, 34, 9, 30, 48, 17 },
+ { 46, 2, 56, 11, 41, 1, 49, 6, 27, 47, 2, 48, 5, 32, 37, 3, 13, 19, 32, 1, 55, 28, 60, 17, 43, 59, 32, 20, 49, 16, 55, 23, 14, 46, 2, 36, 6, 30, 20, 49, 12, 47, 35, 14, 21, 60, 29, 14, 35, 24, 46, 1, 56, 29, 53, 8, 33, 23, 56, 1, 35, 46, 20, 39, 26, 4, 53, 28, 17, 38, 60, 34, 48, 9, 55, 15, 46, 7, 41, 31, 60, 24, 16, 36, 1, 59, 19, 52, 35, 6, 55, 11, 59, 33, 7, 57, 4, 29, 48, 1, 19, 26, 37, 30, 18, 63, 37, 6, 59, 1, 40, 24, 56, 33, 46, 22, 35, 7, 24, 53, 39, 5, 26, 45, 55, 18, 62, 7 },
+ { 20, 60, 29, 34, 20, 62, 33, 52, 10, 36, 13, 60, 41, 21, 50, 27, 56, 49, 8, 51, 21, 45, 11, 48, 8, 23, 53, 3, 29, 44, 5, 52, 9, 32, 50, 17, 43, 56, 3, 38, 24, 10, 62, 25, 51, 9, 33, 49, 61, 7, 30, 62, 22, 19, 2, 42, 63, 5, 49, 18, 60, 15, 52, 7, 43, 56, 23, 50, 5, 50, 2, 20, 41, 30, 1, 52, 22, 61, 14, 26, 3, 43, 53, 7, 47, 28, 11, 14, 23, 58, 33, 25, 47, 13, 50, 17, 40, 54, 34, 60, 41, 6, 59, 14, 50, 7, 25, 55, 20, 42, 51, 8, 27, 4, 16, 60, 28, 50, 44, 3, 22, 49, 63, 12, 33, 1, 43, 31 },
+ { 36, 5, 46, 8, 44, 24, 13, 39, 25, 57, 31, 18, 8, 52, 10, 45, 6, 30, 36, 24, 63, 4, 33, 26, 57, 40, 15, 56, 37, 12, 40, 25, 37, 58, 11, 63, 21, 45, 16, 60, 31, 53, 18, 33, 3, 45, 23, 0, 20, 54, 40, 15, 50, 38, 60, 16, 25, 42, 29, 38, 7, 41, 25, 62, 18, 33, 8, 35, 42, 16, 32, 56, 12, 39, 59, 19, 34, 9, 49, 38, 57, 12, 21, 50, 14, 40, 61, 44, 50, 9, 49, 19, 3, 29, 35, 62, 12, 24, 7, 18, 52, 32, 10, 46, 21, 41, 32, 11, 36, 29, 14, 34, 60, 38, 54, 11, 41, 14, 19, 57, 32, 16, 7, 41, 51, 25, 14, 57 },
+ { 53, 18, 26, 50, 15, 58, 4, 63, 17, 43, 7, 40, 61, 35, 15, 41, 23, 60, 16, 38, 14, 42, 19, 50, 0, 31, 10, 46, 27, 63, 18, 60, 0, 20, 29, 39, 8, 26, 37, 5, 42, 0, 44, 39, 57, 17, 58, 41, 28, 37, 4, 32, 9, 44, 12, 31, 54, 10, 59, 14, 27, 53, 12, 36, 0, 47, 13, 63, 21, 58, 10, 24, 50, 27, 4, 26, 44, 53, 31, 0, 18, 42, 29, 33, 57, 4, 32, 26, 0, 38, 16, 61, 41, 53, 20, 0, 42, 44, 49, 27, 10, 56, 39, 0, 57, 15, 53, 49, 3, 61, 22, 47, 17, 5, 49, 26, 2, 63, 39, 10, 47, 27, 37, 23, 4, 59, 38, 10 },
+ { 23, 39, 61, 3, 37, 28, 48, 31, 0, 34, 51, 23, 2, 26, 58, 0, 53, 11, 46, 1, 57, 29, 52, 14, 37, 61, 21, 35, 2, 49, 7, 34, 47, 55, 4, 33, 54, 13, 58, 52, 19, 50, 22, 7, 13, 29, 36, 11, 51, 17, 60, 25, 55, 4, 34, 51, 0, 35, 20, 48, 32, 3, 51, 30, 59, 28, 40, 3, 46, 29, 54, 43, 7, 62, 47, 11, 39, 4, 23, 46, 55, 8, 63, 5, 25, 37, 18, 46, 21, 56, 31, 5, 36, 8, 45, 58, 26, 15, 2, 36, 47, 21, 29, 44, 25, 34, 3, 27, 43, 10, 52, 0, 45, 30, 24, 36, 43, 18, 34, 59, 0, 52, 61, 15, 44, 19, 30, 49 },
+ { 0, 27, 12, 43, 54, 9, 22, 53, 21, 46, 15, 55, 29, 47, 20, 33, 39, 28, 59, 35, 9, 44, 5, 24, 47, 7, 52, 17, 56, 22, 30, 42, 14, 26, 45, 18, 49, 1, 24, 34, 11, 27, 55, 32, 61, 47, 2, 56, 6, 44, 13, 47, 36, 27, 58, 22, 16, 47, 40, 4, 57, 38, 21, 45, 16, 9, 56, 26, 11, 38, 0, 22, 36, 17, 33, 57, 16, 30, 62, 15, 35, 40, 20, 45, 59, 10, 54, 8, 63, 13, 52, 27, 22, 57, 28, 12, 32, 51, 55, 22, 63, 4, 16, 54, 12, 62, 45, 19, 58, 13, 32, 40, 20, 56, 7, 57, 9, 54, 6, 29, 42, 21, 8, 55, 35, 47, 6, 41 },
+ { 56, 33, 58, 32, 19, 35, 42, 6, 59, 11, 38, 5, 49, 12, 62, 7, 52, 17, 5, 25, 54, 20, 61, 31, 54, 27, 41, 11, 44, 5, 59, 12, 36, 51, 10, 61, 28, 41, 48, 9, 43, 63, 5, 40, 20, 8, 49, 26, 34, 21, 58, 1, 18, 45, 7, 39, 61, 26, 8, 50, 23, 10, 63, 5, 55, 37, 19, 49, 52, 15, 59, 47, 13, 54, 1, 25, 42, 58, 10, 48, 3, 27, 50, 1, 17, 48, 34, 41, 16, 40, 2, 45, 10, 39, 17, 61, 5, 38, 19, 9, 41, 31, 60, 38, 5, 23, 36, 8, 30, 55, 24, 63, 12, 48, 14, 51, 31, 20, 45, 25, 12, 50, 32, 2, 28, 11, 62, 14 },
+ { 44, 16, 7, 48, 1, 62, 16, 50, 27, 33, 61, 25, 17, 44, 31, 14, 22, 43, 32, 48, 18, 40, 8, 36, 3, 16, 33, 62, 23, 38, 25, 53, 2, 21, 41, 6, 22, 15, 59, 29, 16, 37, 26, 15, 52, 42, 23, 15, 54, 39, 10, 30, 53, 11, 49, 24, 2, 43, 55, 17, 34, 44, 15, 31, 24, 44, 2, 32, 7, 35, 25, 5, 40, 45, 29, 51, 6, 21, 37, 52, 24, 60, 13, 31, 53, 23, 2, 28, 49, 24, 31, 60, 20, 51, 1, 34, 48, 14, 59, 33, 50, 1, 18, 33, 48, 60, 17, 51, 39, 6, 38, 2, 35, 29, 40, 23, 1, 62, 15, 53, 37, 17, 46, 57, 40, 51, 24, 22 },
+ { 5, 37, 52, 24, 45, 13, 40, 3, 45, 9, 19, 42, 56, 4, 37, 46, 56, 2, 63, 11, 51, 1, 49, 13, 59, 45, 39, 1, 48, 15, 58, 9, 46, 31, 54, 35, 57, 38, 3, 46, 56, 4, 47, 57, 1, 30, 38, 63, 3, 46, 28, 63, 41, 14, 33, 62, 19, 32, 13, 28, 61, 1, 53, 42, 11, 60, 22, 62, 27, 42, 61, 31, 19, 8, 61, 12, 32, 55, 2, 18, 33, 12, 43, 36, 9, 62, 30, 55, 6, 58, 35, 7, 43, 29, 54, 23, 43, 30, 3, 25, 11, 45, 52, 28, 7, 14, 42, 1, 22, 50, 16, 53, 19, 59, 4, 46, 33, 41, 4, 35, 58, 5, 26, 13, 20, 2, 34, 54 },
+ { 30, 63, 21, 10, 26, 55, 29, 59, 23, 39, 53, 1, 36, 24, 59, 27, 10, 34, 23, 38, 30, 60, 22, 42, 28, 19, 9, 57, 30, 19, 43, 33, 13, 63, 3, 19, 11, 50, 31, 20, 14, 34, 10, 35, 17, 59, 7, 31, 19, 25, 50, 5, 20, 57, 29, 6, 52, 41, 4, 46, 20, 37, 26, 17, 49, 6, 39, 18, 53, 14, 3, 49, 57, 23, 34, 48, 14, 41, 28, 38, 56, 6, 58, 25, 39, 19, 43, 15, 37, 11, 47, 18, 53, 4, 37, 9, 62, 21, 53, 40, 57, 24, 13, 40, 56, 26, 47, 31, 59, 25, 45, 27, 10, 43, 21, 61, 13, 27, 48, 9, 23, 43, 31, 62, 38, 59, 9, 47 },
+ { 25, 4, 40, 60, 34, 6, 18, 36, 8, 57, 12, 30, 49, 14, 6, 54, 41, 16, 50, 6, 43, 15, 34, 4, 53, 24, 50, 35, 4, 51, 7, 55, 28, 24, 39, 44, 60, 7, 25, 62, 42, 53, 24, 61, 28, 45, 52, 12, 48, 37, 9, 35, 43, 3, 37, 48, 12, 58, 30, 52, 9, 59, 6, 57, 33, 29, 48, 4, 37, 45, 20, 34, 10, 39, 0, 60, 22, 45, 8, 63, 21, 42, 14, 49, 3, 56, 11, 46, 21, 61, 0, 42, 25, 13, 63, 17, 36, 8, 46, 16, 6, 35, 63, 0, 21, 37, 4, 57, 9, 34, 5, 61, 48, 32, 8, 37, 54, 17, 56, 30, 60, 0, 50, 16, 7, 29, 42, 17 },
+ { 32, 50, 15, 48, 2, 43, 52, 25, 47, 16, 32, 63, 21, 52, 40, 19, 0, 61, 29, 58, 20, 56, 26, 46, 12, 55, 6, 22, 62, 32, 17, 40, 0, 49, 34, 8, 27, 32, 48, 0, 21, 39, 5, 44, 12, 6, 22, 40, 0, 57, 16, 60, 23, 17, 54, 22, 36, 15, 24, 39, 19, 34, 47, 23, 0, 54, 13, 51, 24, 9, 55, 16, 52, 27, 44, 20, 4, 54, 26, 49, 0, 30, 46, 16, 29, 51, 34, 4, 52, 28, 33, 15, 57, 39, 26, 49, 0, 56, 27, 31, 48, 20, 43, 29, 53, 11, 46, 19, 41, 13, 55, 18, 0, 57, 26, 51, 2, 44, 6, 38, 14, 40, 22, 45, 36, 53, 3, 57 },
+ { 44, 12, 37, 28, 22, 57, 11, 38, 0, 51, 9, 41, 4, 29, 11, 47, 33, 45, 12, 26, 3, 36, 9, 63, 31, 16, 38, 44, 14, 47, 25, 61, 20, 58, 15, 47, 17, 57, 13, 36, 9, 51, 18, 29, 50, 36, 54, 20, 61, 27, 32, 13, 53, 44, 9, 27, 0, 63, 45, 2, 56, 10, 14, 43, 41, 28, 58, 11, 35, 60, 30, 41, 6, 63, 11, 51, 37, 32, 15, 10, 35, 53, 5, 61, 22, 7, 26, 59, 23, 9, 44, 48, 21, 3, 51, 32, 24, 41, 12, 61, 2, 55, 9, 15, 35, 58, 28, 15, 62, 30, 37, 23, 42, 29, 11, 17, 35, 24, 63, 20, 52, 28, 8, 55, 11, 23, 47, 19 },
+ { 0, 56, 8, 53, 14, 31, 61, 20, 55, 28, 62, 18, 35, 60, 25, 57, 7, 23, 39, 54, 47, 17, 43, 0, 40, 59, 29, 2, 56, 10, 37, 5, 43, 11, 29, 52, 1, 23, 54, 41, 59, 30, 55, 1, 62, 15, 33, 4, 43, 10, 47, 39, 1, 31, 40, 60, 49, 33, 7, 55, 26, 50, 31, 61, 8, 18, 21, 32, 44, 1, 25, 47, 18, 36, 30, 23, 59, 7, 40, 59, 27, 19, 38, 32, 44, 54, 40, 17, 38, 60, 27, 6, 35, 55, 10, 14, 44, 5, 50, 17, 38, 26, 42, 50, 18, 3, 44, 52, 2, 49, 7, 52, 15, 46, 62, 39, 55, 10, 31, 48, 3, 58, 33, 18, 61, 34, 13, 59 },
+ { 39, 27, 63, 20, 35, 41, 4, 45, 26, 5, 38, 13, 44, 2, 50, 17, 37, 52, 2, 13, 28, 58, 24, 51, 21, 8, 34, 48, 27, 42, 18, 51, 31, 56, 5, 36, 38, 44, 4, 17, 26, 11, 38, 23, 42, 8, 56, 39, 24, 51, 5, 56, 21, 59, 14, 6, 18, 42, 22, 35, 16, 37, 3, 25, 39, 46, 63, 5, 50, 17, 58, 8, 55, 3, 50, 12, 43, 17, 47, 2, 51, 9, 62, 12, 1, 35, 13, 50, 1, 37, 12, 51, 19, 29, 46, 59, 22, 58, 33, 45, 22, 60, 10, 32, 61, 39, 8, 33, 25, 36, 20, 60, 38, 4, 21, 5, 28, 45, 12, 18, 42, 11, 49, 1, 27, 40, 6, 30 },
+ { 24, 16, 42, 1, 50, 10, 48, 17, 33, 43, 24, 48, 21, 55, 31, 42, 10, 21, 63, 35, 49, 6, 33, 13, 41, 53, 10, 20, 60, 6, 53, 26, 12, 41, 22, 60, 14, 28, 63, 33, 49, 3, 45, 16, 48, 26, 14, 46, 18, 30, 35, 26, 8, 50, 29, 51, 25, 57, 12, 47, 53, 9, 62, 20, 54, 2, 36, 15, 40, 28, 33, 13, 38, 24, 46, 1, 29, 56, 33, 20, 44, 24, 41, 26, 57, 20, 63, 8, 30, 55, 5, 41, 62, 8, 34, 2, 37, 10, 19, 6, 37, 1, 53, 23, 5, 27, 58, 22, 43, 12, 50, 26, 9, 34, 54, 32, 49, 1, 59, 37, 22, 46, 25, 36, 51, 15, 54, 46 },
+ { 52, 7, 45, 33, 26, 58, 14, 60, 7, 54, 3, 58, 8, 34, 14, 5, 59, 30, 18, 44, 8, 22, 48, 62, 3, 26, 55, 38, 23, 16, 39, 1, 62, 24, 49, 9, 53, 19, 46, 7, 19, 60, 31, 58, 2, 34, 53, 7, 59, 2, 62, 42, 46, 19, 36, 11, 44, 4, 38, 28, 1, 43, 32, 51, 12, 29, 56, 22, 52, 2, 62, 49, 22, 60, 14, 35, 63, 5, 25, 57, 14, 53, 4, 46, 18, 31, 42, 22, 47, 20, 58, 31, 16, 43, 23, 54, 30, 42, 52, 57, 29, 49, 30, 13, 45, 48, 16, 55, 6, 63, 1, 44, 14, 58, 19, 47, 15, 24, 51, 34, 6, 55, 5, 63, 20, 41, 21, 9 },
+ { 30, 62, 18, 55, 5, 23, 39, 29, 49, 30, 15, 36, 28, 46, 60, 25, 39, 46, 4, 32, 61, 40, 15, 30, 36, 45, 14, 2, 49, 33, 57, 45, 18, 32, 3, 45, 30, 2, 35, 52, 40, 27, 13, 21, 38, 63, 20, 28, 37, 23, 16, 10, 13, 55, 2, 62, 21, 32, 60, 17, 58, 23, 5, 40, 16, 48, 7, 45, 10, 26, 43, 19, 6, 31, 52, 21, 39, 16, 48, 9, 37, 28, 36, 55, 7, 48, 3, 59, 15, 45, 25, 1, 53, 13, 47, 7, 62, 15, 4, 25, 12, 41, 18, 60, 38, 11, 34, 19, 39, 31, 29, 56, 23, 42, 3, 27, 60, 41, 8, 16, 61, 29, 43, 9, 32, 2, 60, 34 },
+ { 3, 38, 13, 37, 52, 44, 2, 19, 12, 42, 63, 19, 40, 1, 20, 50, 12, 55, 15, 56, 27, 1, 54, 11, 57, 18, 32, 63, 44, 4, 29, 13, 37, 61, 35, 16, 42, 57, 12, 22, 6, 55, 43, 10, 50, 5, 44, 11, 48, 52, 34, 58, 28, 41, 38, 30, 7, 52, 11, 49, 30, 14, 45, 27, 59, 34, 21, 38, 32, 58, 11, 36, 56, 42, 9, 41, 3, 54, 31, 42, 0, 60, 16, 11, 39, 24, 52, 33, 6, 36, 10, 40, 32, 60, 26, 20, 39, 28, 47, 34, 63, 8, 54, 3, 24, 56, 0, 51, 13, 47, 16, 40, 7, 35, 52, 11, 36, 4, 57, 30, 39, 13, 18, 50, 58, 28, 12, 48 },
+ { 57, 24, 49, 21, 10, 31, 61, 36, 56, 0, 22, 53, 11, 56, 32, 7, 36, 27, 41, 9, 46, 19, 34, 42, 25, 7, 50, 9, 28, 21, 54, 8, 50, 7, 27, 59, 10, 25, 48, 62, 37, 0, 33, 58, 25, 18, 32, 61, 0, 15, 45, 5, 50, 3, 23, 55, 47, 17, 40, 6, 60, 34, 53, 8, 41, 0, 61, 13, 54, 4, 46, 28, 0, 17, 48, 27, 58, 13, 23, 61, 33, 21, 50, 30, 62, 8, 14, 29, 56, 27, 61, 49, 17, 2, 44, 11, 51, 0, 59, 17, 40, 20, 32, 47, 36, 21, 42, 28, 60, 4, 54, 10, 59, 17, 30, 62, 21, 43, 26, 48, 0, 56, 36, 25, 8, 44, 39, 17 },
+ { 10, 42, 4, 59, 27, 47, 8, 23, 51, 32, 45, 6, 37, 26, 48, 43, 62, 0, 21, 53, 38, 12, 51, 5, 60, 47, 24, 37, 59, 15, 35, 47, 22, 55, 0, 50, 21, 40, 6, 29, 15, 52, 24, 8, 41, 55, 13, 29, 40, 56, 24, 31, 19, 33, 61, 15, 0, 35, 24, 42, 21, 2, 19, 57, 24, 15, 30, 50, 20, 25, 40, 16, 57, 34, 61, 8, 29, 45, 6, 49, 11, 47, 2, 44, 19, 57, 38, 50, 12, 42, 21, 4, 35, 52, 28, 56, 23, 36, 13, 45, 4, 52, 27, 14, 6, 62, 9, 45, 21, 37, 25, 46, 33, 49, 0, 44, 7, 53, 13, 19, 53, 31, 3, 47, 15, 56, 22, 51 },
+ { 35, 28, 53, 32, 1, 16, 54, 40, 9, 17, 25, 58, 14, 59, 3, 22, 16, 51, 31, 5, 23, 58, 28, 17, 35, 20, 0, 42, 11, 52, 3, 31, 41, 17, 43, 13, 32, 54, 18, 60, 32, 45, 17, 49, 2, 36, 51, 22, 7, 36, 9, 63, 48, 12, 46, 26, 43, 28, 63, 13, 48, 37, 51, 33, 5, 47, 55, 9, 42, 63, 7, 51, 24, 12, 37, 19, 55, 34, 18, 38, 15, 28, 54, 34, 5, 43, 22, 0, 48, 14, 54, 24, 58, 9, 38, 5, 32, 55, 21, 30, 49, 9, 59, 43, 30, 51, 35, 26, 7, 53, 2, 22, 14, 27, 57, 18, 38, 24, 33, 45, 10, 41, 20, 60, 37, 5, 32, 0 },
+ { 63, 19, 15, 40, 62, 35, 14, 28, 46, 61, 4, 49, 35, 10, 29, 54, 33, 8, 45, 62, 37, 1, 43, 55, 10, 52, 61, 30, 19, 40, 25, 62, 11, 38, 27, 58, 36, 3, 46, 8, 39, 4, 62, 28, 47, 20, 4, 54, 47, 27, 43, 1, 21, 38, 8, 58, 10, 54, 4, 56, 9, 26, 12, 39, 60, 27, 18, 37, 1, 31, 35, 5, 45, 50, 2, 43, 26, 1, 59, 23, 56, 40, 7, 26, 58, 17, 32, 63, 25, 39, 7, 31, 45, 19, 63, 15, 48, 8, 37, 61, 16, 34, 1, 56, 18, 3, 15, 58, 49, 32, 63, 41, 55, 5, 40, 22, 50, 6, 59, 2, 63, 23, 52, 11, 26, 61, 44, 23 },
+ { 11, 56, 46, 6, 22, 43, 58, 3, 34, 21, 38, 30, 18, 44, 52, 13, 41, 57, 17, 28, 14, 49, 25, 7, 33, 39, 26, 6, 56, 48, 1, 20, 56, 5, 46, 9, 19, 51, 30, 25, 56, 21, 35, 14, 57, 42, 16, 33, 10, 57, 17, 59, 41, 25, 53, 37, 20, 40, 30, 18, 31, 62, 44, 22, 3, 44, 11, 48, 23, 53, 18, 60, 29, 22, 62, 15, 53, 47, 10, 41, 3, 19, 52, 36, 13, 46, 10, 35, 3, 61, 41, 16, 1, 50, 26, 42, 18, 46, 2, 25, 54, 20, 39, 23, 47, 31, 41, 12, 38, 17, 8, 19, 31, 48, 12, 61, 9, 54, 29, 35, 15, 38, 6, 43, 34, 14, 7, 47 },
+ { 39, 2, 33, 26, 53, 8, 18, 50, 41, 12, 53, 1, 63, 24, 19, 39, 2, 24, 47, 10, 60, 38, 19, 63, 48, 4, 15, 45, 32, 14, 60, 36, 29, 53, 23, 63, 34, 12, 61, 1, 43, 11, 53, 30, 1, 26, 60, 45, 23, 39, 3, 29, 12, 50, 4, 16, 51, 3, 45, 36, 50, 1, 16, 54, 35, 14, 57, 30, 58, 9, 46, 14, 41, 10, 32, 38, 4, 30, 21, 51, 32, 63, 25, 1, 60, 27, 53, 18, 51, 22, 28, 55, 34, 12, 40, 3, 60, 29, 57, 41, 6, 44, 11, 53, 8, 61, 24, 57, 1, 28, 44, 59, 36, 3, 34, 25, 41, 31, 16, 44, 22, 47, 28, 58, 1, 49, 54, 29 },
+ { 58, 25, 50, 13, 38, 30, 60, 24, 6, 57, 27, 42, 9, 45, 6, 61, 30, 50, 4, 34, 29, 3, 46, 13, 22, 42, 58, 28, 9, 39, 23, 44, 7, 15, 44, 2, 40, 15, 47, 41, 23, 37, 7, 59, 38, 11, 34, 6, 62, 14, 52, 35, 55, 19, 32, 61, 33, 24, 57, 6, 22, 59, 29, 7, 49, 25, 40, 3, 17, 39, 27, 52, 0, 55, 16, 57, 24, 61, 36, 6, 29, 12, 48, 39, 20, 44, 6, 40, 33, 5, 48, 10, 57, 36, 22, 51, 33, 9, 24, 12, 62, 29, 50, 35, 14, 43, 5, 33, 47, 52, 13, 23, 10, 51, 56, 16, 46, 1, 49, 4, 61, 9, 52, 18, 31, 21, 36, 17 },
+ { 19, 42, 9, 48, 2, 44, 11, 37, 48, 20, 33, 16, 55, 35, 49, 15, 37, 20, 59, 16, 53, 22, 56, 31, 50, 11, 34, 54, 16, 51, 4, 49, 33, 53, 21, 28, 56, 24, 31, 9, 52, 16, 48, 24, 44, 13, 51, 20, 31, 49, 18, 6, 34, 2, 44, 14, 47, 8, 15, 43, 13, 41, 33, 52, 20, 61, 7, 51, 34, 62, 4, 20, 36, 33, 43, 8, 46, 13, 53, 17, 45, 42, 9, 31, 52, 11, 30, 56, 13, 59, 17, 44, 27, 6, 62, 11, 43, 17, 49, 38, 26, 2, 16, 27, 58, 21, 54, 18, 26, 5, 35, 61, 43, 27, 7, 39, 14, 58, 37, 55, 20, 33, 13, 40, 62, 10, 55, 5 },
+ { 51, 14, 61, 29, 59, 20, 55, 31, 0, 49, 11, 60, 3, 26, 22, 56, 0, 40, 12, 43, 41, 8, 36, 0, 17, 57, 24, 2, 46, 26, 61, 18, 0, 38, 12, 59, 6, 49, 3, 57, 19, 63, 5, 33, 18, 54, 28, 56, 0, 43, 26, 46, 63, 27, 56, 22, 27, 54, 38, 28, 63, 24, 10, 45, 0, 31, 42, 21, 12, 25, 44, 49, 59, 6, 26, 50, 3, 34, 27, 59, 0, 35, 62, 16, 4, 58, 47, 0, 43, 24, 37, 2, 54, 20, 46, 31, 0, 56, 34, 5, 55, 45, 60, 37, 0, 40, 10, 38, 63, 46, 15, 20, 0, 53, 21, 62, 30, 11, 24, 27, 40, 0, 57, 26, 3, 45, 27, 35 },
+};
+
+#else
+#define DM_WIDTH 8
+#define DM_WIDTH_SHIFT 3
+#define DM_HEIGHT 8
+static const unsigned char DM[8][8] =
+{
+ { 0, 32, 8, 40, 2, 34, 10, 42 },
+ { 48, 16, 56, 24, 50, 18, 58, 26 },
+ { 12, 44, 4, 36, 14, 46, 6, 38 },
+ { 60, 28, 52, 20, 62, 30, 54, 22 },
+ { 3, 35, 11, 43, 1, 33, 9, 41 },
+ { 51, 19, 59, 27, 49, 17, 57, 25 },
+ { 15, 47, 7, 39, 13, 45, 5, 37 },
+ { 63, 31, 55, 23, 61, 29, 53, 21 }
+};
+#endif
+
+static guint32 *DM_565 = NULL;
+
+static void
+xlib_rgb_preprocess_dm_565 (void)
+{
+ int i;
+ guint32 dith;
+
+ if (DM_565 == NULL)
+ {
+ DM_565 = malloc(sizeof(guint32) * DM_WIDTH * DM_HEIGHT);
+ for (i = 0; i < DM_WIDTH * DM_HEIGHT; i++)
+ {
+ dith = DM[0][i] >> 3;
+ DM_565[i] = (dith << 20) | dith | (((7 - dith) >> 1) << 10);
+#ifdef VERBOSE
+ printf ("%i %x %x\n", i, dith, DM_565[i]);
+#endif
+ }
+ }
+}
+
+static void
+xlib_rgb_convert_8_d666 (XImage *image,
+ int ax, int ay, int width, int height,
+ unsigned char *buf, int rowstride,
+ int x_align, int y_align, XlibRgbCmap *cmap)
+{
+ int x, y;
+ int bpl;
+ unsigned char *obuf, *obptr;
+ unsigned char *bptr, *bp2;
+ int r, g, b;
+ const unsigned char *dmp;
+ int dith;
+
+ bptr = buf;
+ bpl = image->bytes_per_line;
+ obuf = ((unsigned char *)image->data) + ay * bpl + ax;
+ for (y = 0; y < height; y++)
+ {
+ dmp = DM[(y_align + y) & (DM_HEIGHT - 1)];
+ bp2 = bptr;
+ obptr = obuf;
+ for (x = 0; x < width; x++)
+ {
+ r = *bp2++;
+ g = *bp2++;
+ b = *bp2++;
+ dith = (dmp[(x_align + x) & (DM_WIDTH - 1)] << 2) | 7;
+ r = ((r * 5) + dith) >> 8;
+ g = ((g * 5) + (262 - dith)) >> 8;
+ b = ((b * 5) + dith) >> 8;
+ obptr[0] = colorcube_d[(r << 6) | (g << 3) | b];
+ obptr++;
+ }
+ bptr += rowstride;
+ obuf += bpl;
+ }
+}
+
+static void
+xlib_rgb_convert_8_d (XImage *image,
+ int ax, int ay, int width, int height,
+ unsigned char *buf, int rowstride,
+ int x_align, int y_align,
+ XlibRgbCmap *cmap)
+{
+ int x, y;
+ int bpl;
+ unsigned char *obuf, *obptr;
+ unsigned char *bptr, *bp2;
+ int r, g, b;
+ const unsigned char *dmp;
+ int dith;
+ int rs, gs, bs;
+
+ bptr = buf;
+ bpl = image->bytes_per_line;
+ rs = image_info->nred_shades - 1;
+ gs = image_info->ngreen_shades - 1;
+ bs = image_info->nblue_shades - 1;
+ obuf = ((unsigned char *)image->data) + ay * bpl + ax;
+ for (y = 0; y < height; y++)
+ {
+ dmp = DM[(y_align + y) & (DM_HEIGHT - 1)];
+ bp2 = bptr;
+ obptr = obuf;
+ for (x = 0; x < width; x++)
+ {
+ r = *bp2++;
+ g = *bp2++;
+ b = *bp2++;
+ dith = (dmp[(x_align + x) & (DM_WIDTH - 1)] << 2) | 7;
+ r = ((r * rs) + dith) >> 8;
+ g = ((g * gs) + (262 - dith)) >> 8;
+ b = ((b * bs) + dith) >> 8;
+ obptr[0] = colorcube_d[(r << 6) | (g << 3) | b];
+ obptr++;
+ }
+ bptr += rowstride;
+ obuf += bpl;
+ }
+}
+
+static void
+xlib_rgb_convert_8_indexed (XImage *image,
+ int ax, int ay, int width, int height,
+ unsigned char *buf, int rowstride,
+ int x_align, int y_align, XlibRgbCmap *cmap)
+{
+ int x, y;
+ int bpl;
+ unsigned char *obuf, *obptr;
+ unsigned char *bptr, *bp2;
+ unsigned char c;
+ unsigned char *lut;
+
+ lut = cmap->lut;
+ bptr = buf;
+ bpl = image->bytes_per_line;
+ obuf = ((unsigned char *)image->data) + ay * bpl + ax;
+ for (y = 0; y < height; y++)
+ {
+ bp2 = bptr;
+ obptr = obuf;
+ for (x = 0; x < width; x++)
+ {
+ c = *bp2++;
+ obptr[0] = lut[c];
+ obptr++;
+ }
+ bptr += rowstride;
+ obuf += bpl;
+ }
+}
+
+static void
+xlib_rgb_convert_gray8 (XImage *image,
+ int ax, int ay, int width, int height,
+ unsigned char *buf, int rowstride,
+ int x_align, int y_align, XlibRgbCmap *cmap)
+{
+ int x, y;
+ int bpl;
+ unsigned char *obuf, *obptr;
+ unsigned char *bptr, *bp2;
+ int r, g, b;
+
+ bptr = buf;
+ bpl = image->bytes_per_line;
+ obuf = ((unsigned char *)image->data) + ay * bpl + ax;
+ for (y = 0; y < height; y++)
+ {
+ bp2 = bptr;
+ obptr = obuf;
+ for (x = 0; x < width; x++)
+ {
+ r = *bp2++;
+ g = *bp2++;
+ b = *bp2++;
+ obptr[0] = (g + ((b + r) >> 1)) >> 1;
+ obptr++;
+ }
+ bptr += rowstride;
+ obuf += bpl;
+ }
+}
+
+static void
+xlib_rgb_convert_gray8_gray (XImage *image,
+ int ax, int ay, int width, int height,
+ unsigned char *buf, int rowstride,
+ int x_align, int y_align, XlibRgbCmap *cmap)
+{
+ int y;
+ int bpl;
+ unsigned char *obuf;
+ unsigned char *bptr;
+
+ bptr = buf;
+ bpl = image->bytes_per_line;
+ obuf = ((unsigned char *)image->data) + ay * bpl + ax;
+ for (y = 0; y < height; y++)
+ {
+ memcpy (obuf, bptr, (unsigned int)width);
+ bptr += rowstride;
+ obuf += bpl;
+ }
+}
+
+#if G_BYTE_ORDER == G_LITTLE_ENDIAN
+#define HAIRY_CONVERT_565
+#endif
+
+#ifdef HAIRY_CONVERT_565
+/* Render a 24-bit RGB image in buf into the GdkImage, without dithering.
+ This assumes native byte ordering - what should really be done is to
+ check whether static_image->byte_order is consistent with the _ENDIAN
+ config flag, and if not, use a different function.
+
+ This one is even faster than the one below - its inner loop loads 3
+ words (i.e. 4 24-bit pixels), does a lot of shifting and masking,
+ then writes 2 words. */
+static void
+xlib_rgb_convert_565 (XImage *image,
+ int ax, int ay, int width, int height,
+ unsigned char *buf, int rowstride,
+ int x_align, int y_align, XlibRgbCmap *cmap)
+{
+ int x, y;
+ unsigned char *obuf, *obptr;
+ int bpl;
+ unsigned char *bptr, *bp2;
+ unsigned char r, g, b;
+
+ bptr = buf;
+ bpl = image->bytes_per_line;
+ obuf = ((unsigned char *)image->data) + ay * bpl + ax * 2;
+ for (y = 0; y < height; y++)
+ {
+ bp2 = bptr;
+ obptr = obuf;
+ if (((unsigned long)obuf | (unsigned long) bp2) & 3)
+ {
+ for (x = 0; x < width; x++)
+ {
+ r = *bp2++;
+ g = *bp2++;
+ b = *bp2++;
+ ((guint16 *)obptr)[0] = ((r & 0xf8) << 8) |
+ ((g & 0xfc) << 3) |
+ (b >> 3);
+ obptr += 2;
+ }
+ }
+ else
+ {
+ for (x = 0; x < width - 3; x += 4)
+ {
+ guint32 r1b0g0r0;
+ guint32 g2r2b1g1;
+ guint32 b3g3r3b2;
+
+ r1b0g0r0 = ((guint32 *)bp2)[0];
+ g2r2b1g1 = ((guint32 *)bp2)[1];
+ b3g3r3b2 = ((guint32 *)bp2)[2];
+ ((guint32 *)obptr)[0] =
+ ((r1b0g0r0 & 0xf8) << 8) |
+ ((r1b0g0r0 & 0xfc00) >> 5) |
+ ((r1b0g0r0 & 0xf80000) >> 19) |
+ (r1b0g0r0 & 0xf8000000) |
+ ((g2r2b1g1 & 0xfc) << 19) |
+ ((g2r2b1g1 & 0xf800) << 5);
+ ((guint32 *)obptr)[1] =
+ ((g2r2b1g1 & 0xf80000) >> 8) |
+ ((g2r2b1g1 & 0xfc000000) >> 21) |
+ ((b3g3r3b2 & 0xf8) >> 3) |
+ ((b3g3r3b2 & 0xf800) << 16) |
+ ((b3g3r3b2 & 0xfc0000) << 3) |
+ ((b3g3r3b2 & 0xf8000000) >> 11);
+ bp2 += 12;
+ obptr += 8;
+ }
+ for (; x < width; x++)
+ {
+ r = *bp2++;
+ g = *bp2++;
+ b = *bp2++;
+ ((guint16 *)obptr)[0] = ((r & 0xf8) << 8) |
+ ((g & 0xfc) << 3) |
+ (b >> 3);
+ obptr += 2;
+ }
+ }
+ bptr += rowstride;
+ obuf += bpl;
+ }
+}
+#else
+/* Render a 24-bit RGB image in buf into the GdkImage, without dithering.
+ This assumes native byte ordering - what should really be done is to
+ check whether static_image->byte_order is consistent with the _ENDIAN
+ config flag, and if not, use a different function.
+
+ This routine is faster than the one included with Gtk 1.0 for a number
+ of reasons:
+
+ 1. Shifting instead of lookup tables (less memory traffic).
+
+ 2. Much less register pressure, especially because shifts are
+ in the code.
+
+ 3. A memcpy is avoided (i.e. the transfer function).
+
+ 4. On big-endian architectures, byte swapping is avoided.
+
+ That said, it wouldn't be hard to make it even faster - just make an
+ inner loop that reads 3 words (i.e. 4 24-bit pixels), does a lot of
+ shifting and masking, then writes 2 words.
+*/
+static void
+xlib_rgb_convert_565 (XImage *image,
+ int ax, int ay, int width, int height,
+ unsigned char *buf, int rowstride,
+ int x_align, int y_align, XlibRgbCmap *cmap)
+{
+ int x, y;
+ unsigned char *obuf;
+ int bpl;
+ unsigned char *bptr, *bp2;
+ unsigned char r, g, b;
+
+ bptr = buf;
+ bpl = image->bytes_per_line;
+ obuf = ((unsigned char *)image->data) + ay * bpl + ax * 2;
+ for (y = 0; y < height; y++)
+ {
+ bp2 = bptr;
+ for (x = 0; x < width; x++)
+ {
+ r = *bp2++;
+ g = *bp2++;
+ b = *bp2++;
+ ((unsigned short *)obuf)[x] = ((r & 0xf8) << 8) |
+ ((g & 0xfc) << 3) |
+ (b >> 3);
+ }
+ bptr += rowstride;
+ obuf += bpl;
+ }
+}
+#endif
+
+#ifdef HAIRY_CONVERT_565
+static void
+xlib_rgb_convert_565_gray (XImage *image,
+ int ax, int ay, int width, int height,
+ unsigned char *buf, int rowstride,
+ int x_align, int y_align, XlibRgbCmap *cmap)
+{
+ int x, y;
+ unsigned char *obuf, *obptr;
+ int bpl;
+ unsigned char *bptr, *bp2;
+ unsigned char g;
+
+ bptr = buf;
+ bpl = image->bytes_per_line;
+ obuf = ((unsigned char *)image->data) + ay * bpl + ax * 2;
+ for (y = 0; y < height; y++)
+ {
+ bp2 = bptr;
+ obptr = obuf;
+ if (((unsigned long)obuf | (unsigned long) bp2) & 3)
+ {
+ for (x = 0; x < width; x++)
+ {
+ g = *bp2++;
+ ((guint16 *)obptr)[0] = ((g & 0xf8) << 8) |
+ ((g & 0xfc) << 3) |
+ (g >> 3);
+ obptr += 2;
+ }
+ }
+ else
+ {
+ for (x = 0; x < width - 3; x += 4)
+ {
+ guint32 g3g2g1g0;
+
+ g3g2g1g0 = ((guint32 *)bp2)[0];
+ ((guint32 *)obptr)[0] =
+ ((g3g2g1g0 & 0xf8) << 8) |
+ ((g3g2g1g0 & 0xfc) << 3) |
+ ((g3g2g1g0 & 0xf8) >> 3) |
+ (g3g2g1g0 & 0xf800) << 16 |
+ ((g3g2g1g0 & 0xfc00) << 11) |
+ ((g3g2g1g0 & 0xf800) << 5);
+ ((guint32 *)obptr)[1] =
+ ((g3g2g1g0 & 0xf80000) >> 8) |
+ ((g3g2g1g0 & 0xfc0000) >> 13) |
+ ((g3g2g1g0 & 0xf80000) >> 19) |
+ (g3g2g1g0 & 0xf8000000) |
+ ((g3g2g1g0 & 0xfc000000) >> 5) |
+ ((g3g2g1g0 & 0xf8000000) >> 11);
+ bp2 += 4;
+ obptr += 8;
+ }
+ for (; x < width; x++)
+ {
+ g = *bp2++;
+ ((guint16 *)obptr)[0] = ((g & 0xf8) << 8) |
+ ((g & 0xfc) << 3) |
+ (g >> 3);
+ obptr += 2;
+ }
+ }
+ bptr += rowstride;
+ obuf += bpl;
+ }
+}
+#else
+static void
+xlib_rgb_convert_565_gray (XImage *image,
+ int ax, int ay, int width, int height,
+ unsigned char *buf, int rowstride,
+ int x_align, int y_align, XlibRgbCmap *cmap)
+{
+ int x, y;
+ unsigned char *obuf;
+ int bpl;
+ unsigned char *bptr, *bp2;
+ unsigned char g;
+
+ bptr = buf;
+ bpl = image->bytes_per_line;
+ obuf = ((unsigned char *)image->data) + ay * bpl + ax * 2;
+ for (y = 0; y < height; y++)
+ {
+ bp2 = bptr;
+ for (x = 0; x < width; x++)
+ {
+ g = *bp2++;
+ ((guint16 *)obuf)[x] = ((g & 0xf8) << 8) |
+ ((g & 0xfc) << 3) |
+ (g >> 3);
+ }
+ bptr += rowstride;
+ obuf += bpl;
+ }
+}
+#endif
+
+static void
+xlib_rgb_convert_565_br (XImage *image,
+ int ax, int ay, int width, int height,
+ unsigned char *buf, int rowstride,
+ int x_align, int y_align, XlibRgbCmap *cmap)
+{
+ int x, y;
+ unsigned char *obuf;
+ int bpl;
+ unsigned char *bptr, *bp2;
+ unsigned char r, g, b;
+
+ bptr = buf;
+ bpl = image->bytes_per_line;
+ obuf = ((unsigned char *)image->data) + ay * bpl + ax * 2;
+ for (y = 0; y < height; y++)
+ {
+ bp2 = bptr;
+ for (x = 0; x < width; x++)
+ {
+ r = *bp2++;
+ g = *bp2++;
+ b = *bp2++;
+ /* final word is:
+ g4 g3 g2 b7 b6 b5 b4 b3 r7 r6 r5 r4 r3 g7 g6 g5
+ */
+ ((unsigned short *)obuf)[x] = (r & 0xf8) |
+ ((g & 0xe0) >> 5) |
+ ((g & 0x1c) << 11) |
+ ((b & 0xf8) << 5);
+ }
+ bptr += rowstride;
+ obuf += bpl;
+ }
+}
+
+/* Thanks to Ray Lehtiniemi for a patch that resulted in a ~25% speedup
+ in this mode. */
+#ifdef HAIRY_CONVERT_565
+static void
+xlib_rgb_convert_565_d (XImage *image,
+ int ax, int ay, int width, int height,
+ unsigned char *buf, int rowstride,
+ int x_align, int y_align, XlibRgbCmap *cmap)
+{
+ /* Now this is what I'd call some highly tuned code! */
+ int x, y;
+ unsigned char *obuf, *obptr;
+ int bpl;
+ unsigned char *bptr, *bp2;
+
+ width += x_align;
+ height += y_align;
+
+ bptr = buf;
+ bpl = image->bytes_per_line;
+ obuf = ((unsigned char *)image->data) + ay * bpl + ax * 2;
+ for (y = y_align; y < height; y++)
+ {
+ guint32 *dmp = DM_565 + ((y & (DM_HEIGHT - 1)) << DM_WIDTH_SHIFT);
+ bp2 = bptr;
+ obptr = obuf;
+ if (((unsigned long)obuf | (unsigned long) bp2) & 3)
+ {
+ for (x = x_align; x < width; x++)
+ {
+ gint32 rgb = *bp2++ << 20;
+ rgb += *bp2++ << 10;
+ rgb += *bp2++;
+ rgb += dmp[x & (DM_WIDTH - 1)];
+ rgb += 0x10040100
+ - ((rgb & 0x1e0001e0) >> 5)
+ - ((rgb & 0x00070000) >> 6);
+
+ ((unsigned short *)obptr)[0] =
+ ((rgb & 0x0f800000) >> 12) |
+ ((rgb & 0x0003f000) >> 7) |
+ ((rgb & 0x000000f8) >> 3);
+ obptr += 2;
+ }
+ }
+ else
+ {
+ for (x = x_align; x < width - 3; x += 4)
+ {
+ guint32 r1b0g0r0;
+ guint32 g2r2b1g1;
+ guint32 b3g3r3b2;
+ guint32 rgb02, rgb13;
+
+ r1b0g0r0 = ((guint32 *)bp2)[0];
+ g2r2b1g1 = ((guint32 *)bp2)[1];
+ b3g3r3b2 = ((guint32 *)bp2)[2];
+ rgb02 =
+ ((r1b0g0r0 & 0xff) << 20) +
+ ((r1b0g0r0 & 0xff00) << 2) +
+ ((r1b0g0r0 & 0xff0000) >> 16) +
+ dmp[x & (DM_WIDTH - 1)];
+ rgb02 += 0x10040100
+ - ((rgb02 & 0x1e0001e0) >> 5)
+ - ((rgb02 & 0x00070000) >> 6);
+ rgb13 =
+ ((r1b0g0r0 & 0xff000000) >> 4) +
+ ((g2r2b1g1 & 0xff) << 10) +
+ ((g2r2b1g1 & 0xff00) >> 8) +
+ dmp[(x + 1) & (DM_WIDTH - 1)];
+ rgb13 += 0x10040100
+ - ((rgb13 & 0x1e0001e0) >> 5)
+ - ((rgb13 & 0x00070000) >> 6);
+ ((guint32 *)obptr)[0] =
+ ((rgb02 & 0x0f800000) >> 12) |
+ ((rgb02 & 0x0003f000) >> 7) |
+ ((rgb02 & 0x000000f8) >> 3) |
+ ((rgb13 & 0x0f800000) << 4) |
+ ((rgb13 & 0x0003f000) << 9) |
+ ((rgb13 & 0x000000f8) << 13);
+ rgb02 =
+ ((g2r2b1g1 & 0xff0000) << 4) +
+ ((g2r2b1g1 & 0xff000000) >> 14) +
+ (b3g3r3b2 & 0xff) +
+ dmp[(x + 2) & (DM_WIDTH - 1)];
+ rgb02 += 0x10040100
+ - ((rgb02 & 0x1e0001e0) >> 5)
+ - ((rgb02 & 0x00070000) >> 6);
+ rgb13 =
+ ((b3g3r3b2 & 0xff00) << 12) +
+ ((b3g3r3b2 & 0xff0000) >> 6) +
+ ((b3g3r3b2 & 0xff000000) >> 24) +
+ dmp[(x + 3) & (DM_WIDTH - 1)];
+ rgb13 += 0x10040100
+ - ((rgb13 & 0x1e0001e0) >> 5)
+ - ((rgb13 & 0x00070000) >> 6);
+ ((guint32 *)obptr)[1] =
+ ((rgb02 & 0x0f800000) >> 12) |
+ ((rgb02 & 0x0003f000) >> 7) |
+ ((rgb02 & 0x000000f8) >> 3) |
+ ((rgb13 & 0x0f800000) << 4) |
+ ((rgb13 & 0x0003f000) << 9) |
+ ((rgb13 & 0x000000f8) << 13);
+ bp2 += 12;
+ obptr += 8;
+ }
+ for (; x < width; x++)
+ {
+ gint32 rgb = *bp2++ << 20;
+ rgb += *bp2++ << 10;
+ rgb += *bp2++;
+ rgb += dmp[x & (DM_WIDTH - 1)];
+ rgb += 0x10040100
+ - ((rgb & 0x1e0001e0) >> 5)
+ - ((rgb & 0x00070000) >> 6);
+
+ ((unsigned short *)obptr)[0] =
+ ((rgb & 0x0f800000) >> 12) |
+ ((rgb & 0x0003f000) >> 7) |
+ ((rgb & 0x000000f8) >> 3);
+ obptr += 2;
+ }
+ }
+ bptr += rowstride;
+ obuf += bpl;
+ }
+}
+#else
+static void
+xlib_rgb_convert_565_d (XImage *image,
+ int ax, int ay, int width, int height,
+ unsigned char *buf, int rowstride,
+ int x_align, int y_align, XlibRgbCmap *cmap)
+{
+ int x, y;
+ unsigned char *obuf;
+ int bpl;
+ unsigned char *bptr;
+
+ width += x_align;
+ height += y_align;
+
+ bptr = buf;
+ bpl = image->bytes_per_line;
+ obuf = ((unsigned char *)image->data) + ay * bpl + (ax - x_align) * 2;
+
+ for (y = y_align; y < height; y++)
+ {
+ guint32 *dmp = DM_565 + ((y & (DM_HEIGHT - 1)) << DM_WIDTH_SHIFT);
+ unsigned char *bp2 = bptr;
+
+ for (x = x_align; x < width; x++)
+ {
+ gint32 rgb = *bp2++ << 20;
+ rgb += *bp2++ << 10;
+ rgb += *bp2++;
+ rgb += dmp[x & (DM_WIDTH - 1)];
+ rgb += 0x10040100
+ - ((rgb & 0x1e0001e0) >> 5)
+ - ((rgb & 0x00070000) >> 6);
+
+ ((unsigned short *)obuf)[x] =
+ ((rgb & 0x0f800000) >> 12) |
+ ((rgb & 0x0003f000) >> 7) |
+ ((rgb & 0x000000f8) >> 3);
+ }
+
+ bptr += rowstride;
+ obuf += bpl;
+ }
+}
+#endif
+
+static void
+xlib_rgb_convert_555 (XImage *image,
+ int ax, int ay, int width, int height,
+ unsigned char *buf, int rowstride,
+ int x_align, int y_align, XlibRgbCmap *cmap)
+{
+ int x, y;
+ unsigned char *obuf;
+ int bpl;
+ unsigned char *bptr, *bp2;
+ unsigned char r, g, b;
+
+ bptr = buf;
+ bpl = image->bytes_per_line;
+ obuf = ((unsigned char *)image->data) + ay * bpl + ax * 2;
+ for (y = 0; y < height; y++)
+ {
+ bp2 = bptr;
+ for (x = 0; x < width; x++)
+ {
+ r = *bp2++;
+ g = *bp2++;
+ b = *bp2++;
+ ((unsigned short *)obuf)[x] = ((r & 0xf8) << 7) |
+ ((g & 0xf8) << 2) |
+ (b >> 3);
+ }
+ bptr += rowstride;
+ obuf += bpl;
+ }
+}
+
+static void
+xlib_rgb_convert_555_br (XImage *image,
+ int ax, int ay, int width, int height,
+ unsigned char *buf, int rowstride,
+ int x_align, int y_align, XlibRgbCmap *cmap)
+{
+ int x, y;
+ unsigned char *obuf;
+ int bpl;
+ unsigned char *bptr, *bp2;
+ unsigned char r, g, b;
+
+ bptr = buf;
+ bpl = image->bytes_per_line;
+ obuf = ((unsigned char *)image->data) + ay * bpl + ax * 2;
+ for (y = 0; y < height; y++)
+ {
+ bp2 = bptr;
+ for (x = 0; x < width; x++)
+ {
+ r = *bp2++;
+ g = *bp2++;
+ b = *bp2++;
+ /* final word is:
+ g5 g4 g3 b7 b6 b5 b4 b3 0 r7 r6 r5 r4 r3 g7 g6
+ */
+ ((unsigned short *)obuf)[x] = ((r & 0xf8) >> 1) |
+ ((g & 0xc0) >> 6) |
+ ((g & 0x18) << 10) |
+ ((b & 0xf8) << 5);
+ }
+ bptr += rowstride;
+ obuf += bpl;
+ }
+}
+
+static void
+xlib_rgb_convert_888_msb (XImage *image,
+ int ax, int ay, int width, int height,
+ unsigned char *buf, int rowstride,
+ int x_align, int y_align, XlibRgbCmap *cmap)
+{
+ int y;
+ unsigned char *obuf;
+ int bpl;
+ unsigned char *bptr;
+
+ bptr = buf;
+ bpl = image->bytes_per_line;
+ obuf = ((unsigned char *)image->data) + ay * bpl + ax * 3;
+ for (y = 0; y < height; y++)
+ {
+ memcpy (obuf, bptr, (unsigned int)(width + width + width));
+ bptr += rowstride;
+ obuf += bpl;
+ }
+}
+
+/* todo: optimize this */
+#if G_BYTE_ORDER == G_LITTLE_ENDIAN
+#define HAIRY_CONVERT_888
+#endif
+
+#ifdef HAIRY_CONVERT_888
+static void
+xlib_rgb_convert_888_lsb (XImage *image,
+ int ax, int ay, int width, int height,
+ unsigned char *buf, int rowstride,
+ int x_align, int y_align, XlibRgbCmap *cmap)
+{
+ int x, y;
+ unsigned char *obuf, *obptr;
+ int bpl;
+ unsigned char *bptr, *bp2;
+ int r, g, b;
+
+ bptr = buf;
+ bpl = image->bytes_per_line;
+ obuf = ((unsigned char *)image->data) + ay * bpl + ax * 3;
+ for (y = 0; y < height; y++)
+ {
+ bp2 = bptr;
+ obptr = obuf;
+ if (((unsigned long)obuf | (unsigned long) bp2) & 3)
+ {
+ for (x = 0; x < width; x++)
+ {
+ r = bp2[0];
+ g = bp2[1];
+ b = bp2[2];
+ *obptr++ = b;
+ *obptr++ = g;
+ *obptr++ = r;
+ bp2 += 3;
+ }
+ }
+ else
+ {
+ for (x = 0; x < width - 3; x += 4)
+ {
+ guint32 r1b0g0r0;
+ guint32 g2r2b1g1;
+ guint32 b3g3r3b2;
+
+ r1b0g0r0 = ((guint32 *)bp2)[0];
+ g2r2b1g1 = ((guint32 *)bp2)[1];
+ b3g3r3b2 = ((guint32 *)bp2)[2];
+ ((guint32 *)obptr)[0] =
+ (r1b0g0r0 & 0xff00) |
+ ((r1b0g0r0 & 0xff0000) >> 16) |
+ (((g2r2b1g1 & 0xff00) | (r1b0g0r0 & 0xff)) << 16);
+ ((guint32 *)obptr)[1] =
+ (g2r2b1g1 & 0xff0000ff) |
+ ((r1b0g0r0 & 0xff000000) >> 16) |
+ ((b3g3r3b2 & 0xff) << 16);
+ ((guint32 *)obptr)[2] =
+ (((g2r2b1g1 & 0xff0000) | (b3g3r3b2 & 0xff000000)) >> 16) |
+ ((b3g3r3b2 & 0xff00) << 16) |
+ ((b3g3r3b2 & 0xff0000));
+ bp2 += 12;
+ obptr += 12;
+ }
+ for (; x < width; x++)
+ {
+ r = bp2[0];
+ g = bp2[1];
+ b = bp2[2];
+ *obptr++ = b;
+ *obptr++ = g;
+ *obptr++ = r;
+ bp2 += 3;
+ }
+ }
+ bptr += rowstride;
+ obuf += bpl;
+ }
+}
+#else
+static void
+xlib_rgb_convert_888_lsb (XImage *image,
+ int ax, int ay, int width, int height,
+ unsigned char *buf, int rowstride,
+ int x_align, int y_align, XlibRgbCmap *cmap)
+{
+ int x, y;
+ unsigned char *obuf;
+ int bpl;
+ unsigned char *bptr, *bp2;
+ int r, g, b;
+
+ bptr = buf;
+ bpl = image->bytes_per_line;
+ obuf = ((unsigned char *)image->data) + ay * bpl + ax * 3;
+ for (y = 0; y < height; y++)
+ {
+ bp2 = bptr;
+ for (x = 0; x < width; x++)
+ {
+ r = bp2[0];
+ g = bp2[1];
+ b = bp2[2];
+ obuf[x * 3] = b;
+ obuf[x * 3 + 1] = g;
+ obuf[x * 3 + 2] = r;
+ bp2 += 3;
+ }
+ bptr += rowstride;
+ obuf += bpl;
+ }
+}
+#endif
+
+/* convert 24-bit packed to 32-bit unpacked */
+/* todo: optimize this */
+static void
+xlib_rgb_convert_0888 (XImage *image,
+ int ax, int ay, int width, int height,
+ unsigned char *buf, int rowstride,
+ int x_align, int y_align, XlibRgbCmap *cmap)
+{
+ int x, y;
+ unsigned char *obuf;
+ int bpl;
+ unsigned char *bptr, *bp2;
+ int r, g, b;
+
+ bptr = buf;
+ bpl = image->bytes_per_line;
+ obuf = ((unsigned char *)image->data) + ay * bpl + ax * 4;
+ for (y = 0; y < height; y++)
+ {
+ bp2 = bptr;
+ for (x = 0; x < width; x++)
+ {
+ r = bp2[0];
+ g = bp2[1];
+ b = bp2[2];
+ ((guint32 *)obuf)[x] = (r << 16) | (g << 8) | b;
+ bp2 += 3;
+ }
+ bptr += rowstride;
+ obuf += bpl;
+ }
+}
+
+static void
+xlib_rgb_convert_0888_br (XImage *image,
+ int ax, int ay, int width, int height,
+ unsigned char *buf, int rowstride,
+ int x_align, int y_align, XlibRgbCmap *cmap)
+{
+ int x, y;
+ unsigned char *obuf;
+ int bpl;
+ unsigned char *bptr, *bp2;
+ int r, g, b;
+
+ bptr = buf;
+ bpl = image->bytes_per_line;
+ obuf = ((unsigned char *)image->data) + ay * bpl + ax * 4;
+ for (y = 0; y < height; y++)
+ {
+ bp2 = bptr;
+ for (x = 0; x < width; x++)
+ {
+ r = bp2[0];
+ g = bp2[1];
+ b = bp2[2];
+ ((guint32 *)obuf)[x] = (b << 24) | (g << 16) | (r << 8);
+ bp2 += 3;
+ }
+ bptr += rowstride;
+ obuf += bpl;
+ }
+}
+
+static void
+xlib_rgb_convert_8880_br (XImage *image,
+ int ax, int ay, int width, int height,
+ unsigned char *buf, int rowstride,
+ int x_align, int y_align, XlibRgbCmap *cmap)
+{
+ int x, y;
+ unsigned char *obuf;
+ int bpl;
+ unsigned char *bptr, *bp2;
+ int r, g, b;
+
+ bptr = buf;
+ bpl = image->bytes_per_line;
+ obuf = ((unsigned char *)image->data) + ay * bpl + ax * 4;
+ for (y = 0; y < height; y++)
+ {
+ bp2 = bptr;
+ for (x = 0; x < width; x++)
+ {
+ r = bp2[0];
+ g = bp2[1];
+ b = bp2[2];
+ ((guint32 *)obuf)[x] = (b << 16) | (g << 8) | r;
+ bp2 += 3;
+ }
+ bptr += rowstride;
+ obuf += bpl;
+ }
+}
+
+/* Generic truecolor/directcolor conversion function. Slow, but these
+ are oddball modes. */
+static void
+xlib_rgb_convert_truecolor_lsb (XImage *image,
+ int ax, int ay, int width, int height,
+ unsigned char *buf, int rowstride,
+ int x_align, int y_align,
+ XlibRgbCmap *cmap)
+{
+ int x, y;
+ unsigned char *obuf, *obptr;
+ int bpl;
+ unsigned char *bptr, *bp2;
+ int r, g, b;
+ int r_right, r_left;
+ int g_right, g_left;
+ int b_right, b_left;
+ int bpp;
+ guint32 pixel;
+ int i;
+
+ r_right = 8 - image_info->red_prec;
+ r_left = image_info->red_shift;
+ g_right = 8 - image_info->green_prec;
+ g_left = image_info->green_shift;
+ b_right = 8 - image_info->blue_prec;
+ b_left = image_info->blue_shift;
+ bpp = image_info->bpp;
+ bptr = buf;
+ bpl = image->bytes_per_line;
+ obuf = ((unsigned char *)image->data) + ay * bpl + ax * bpp;
+ for (y = 0; y < height; y++)
+ {
+ obptr = obuf;
+ bp2 = bptr;
+ for (x = 0; x < width; x++)
+ {
+ r = bp2[0];
+ g = bp2[1];
+ b = bp2[2];
+ pixel = ((r >> r_right) << r_left) |
+ ((g >> g_right) << g_left) |
+ ((b >> b_right) << b_left);
+ for (i = 0; i < bpp; i++)
+ {
+ *obptr++ = pixel & 0xff;
+ pixel >>= 8;
+ }
+ bp2 += 3;
+ }
+ bptr += rowstride;
+ obuf += bpl;
+ }
+}
+
+static void
+xlib_rgb_convert_truecolor_lsb_d (XImage *image,
+ int ax, int ay, int width, int height,
+ unsigned char *buf, int rowstride,
+ int x_align, int y_align,
+ XlibRgbCmap *cmap)
+{
+ int x, y;
+ unsigned char *obuf, *obptr;
+ int bpl;
+ unsigned char *bptr, *bp2;
+ int r, g, b;
+ int r_right, r_left, r_prec;
+ int g_right, g_left, g_prec;
+ int b_right, b_left, b_prec;
+ int bpp;
+ guint32 pixel;
+ int i;
+ int dith;
+ int r1, g1, b1;
+ const unsigned char *dmp;
+
+ r_right = 8 - image_info->red_prec;
+ r_left = image_info->red_shift;
+ r_prec = image_info->red_prec;
+ g_right = 8 - image_info->green_prec;
+ g_left = image_info->green_shift;
+ g_prec = image_info->green_prec;
+ b_right = 8 - image_info->blue_prec;
+ b_left = image_info->blue_shift;
+ b_prec = image_info->blue_prec;
+ bpp = image_info->bpp;
+ bptr = buf;
+ bpl = image->bytes_per_line;
+ obuf = ((unsigned char *)image->data) + ay * bpl + ax * bpp;
+ for (y = 0; y < height; y++)
+ {
+ dmp = DM[(y_align + y) & (DM_HEIGHT - 1)];
+ obptr = obuf;
+ bp2 = bptr;
+ for (x = 0; x < width; x++)
+ {
+ r = bp2[0];
+ g = bp2[1];
+ b = bp2[2];
+ dith = dmp[(x_align + x) & (DM_WIDTH - 1)] << 2;
+ r1 = r + (dith >> r_prec);
+ g1 = g + ((252 - dith) >> g_prec);
+ b1 = b + (dith >> b_prec);
+ pixel = (((r1 - (r1 >> r_prec)) >> r_right) << r_left) |
+ (((g1 - (g1 >> g_prec)) >> g_right) << g_left) |
+ (((b1 - (b1 >> b_prec)) >> b_right) << b_left);
+ for (i = 0; i < bpp; i++)
+ {
+ *obptr++ = pixel & 0xff;
+ pixel >>= 8;
+ }
+ bp2 += 3;
+ }
+ bptr += rowstride;
+ obuf += bpl;
+ }
+}
+
+static void
+xlib_rgb_convert_truecolor_msb (XImage *image,
+ int ax, int ay, int width, int height,
+ unsigned char *buf, int rowstride,
+ int x_align, int y_align,
+ XlibRgbCmap *cmap)
+{
+ int x, y;
+ unsigned char *obuf, *obptr;
+ int bpl;
+ unsigned char *bptr, *bp2;
+ int r, g, b;
+ int r_right, r_left;
+ int g_right, g_left;
+ int b_right, b_left;
+ int bpp;
+ guint32 pixel;
+ int shift, shift_init;
+
+ r_right = 8 - image_info->red_prec;
+ r_left = image_info->red_shift;
+ g_right = 8 - image_info->green_prec;
+ g_left = image_info->green_shift;
+ b_right = 8 - image_info->blue_prec;
+ b_left = image_info->blue_shift;
+ bpp = image_info->bpp;
+ bptr = buf;
+ bpl = image->bytes_per_line;
+ obuf = ((unsigned char *)image->data) + ay * bpl + ax * bpp;
+ shift_init = (bpp - 1) << 3;
+ for (y = 0; y < height; y++)
+ {
+ obptr = obuf;
+ bp2 = bptr;
+ for (x = 0; x < width; x++)
+ {
+ r = bp2[0];
+ g = bp2[1];
+ b = bp2[2];
+ pixel = ((r >> r_right) << r_left) |
+ ((g >> g_right) << g_left) |
+ ((b >> b_right) << b_left);
+ for (shift = shift_init; shift >= 0; shift -= 8)
+ {
+ *obptr++ = (pixel >> shift) & 0xff;
+ }
+ bp2 += 3;
+ }
+ bptr += rowstride;
+ obuf += bpl;
+ }
+}
+
+static void
+xlib_rgb_convert_truecolor_msb_d (XImage *image,
+ int ax, int ay, int width, int height,
+ unsigned char *buf, int rowstride,
+ int x_align, int y_align,
+ XlibRgbCmap *cmap)
+{
+ int x, y;
+ unsigned char *obuf, *obptr;
+ int bpl;
+ unsigned char *bptr, *bp2;
+ int r, g, b;
+ int r_right, r_left, r_prec;
+ int g_right, g_left, g_prec;
+ int b_right, b_left, b_prec;
+ int bpp;
+ guint32 pixel;
+ int shift, shift_init;
+ int dith;
+ int r1, g1, b1;
+ const unsigned char *dmp;
+
+ r_right = 8 - image_info->red_prec;
+ r_left = image_info->red_shift;
+ r_prec = image_info->red_prec;
+ g_right = 8 - image_info->green_prec;
+ g_left = image_info->green_shift;
+ g_prec = image_info->green_prec;
+ b_right = 8 - image_info->blue_prec;
+ b_left = image_info->blue_shift;
+ b_prec = image_info->blue_prec;
+ bpp = image_info->bpp;
+ bptr = buf;
+ bpl = image->bytes_per_line;
+ obuf = ((unsigned char *)image->data) + ay * bpl + ax * bpp;
+ shift_init = (bpp - 1) << 3;
+ for (y = 0; y < height; y++)
+ {
+ dmp = DM[(y_align + y) & (DM_HEIGHT - 1)];
+ obptr = obuf;
+ bp2 = bptr;
+ for (x = 0; x < width; x++)
+ {
+ r = bp2[0];
+ g = bp2[1];
+ b = bp2[2];
+ dith = dmp[(x_align + x) & (DM_WIDTH - 1)] << 2;
+ r1 = r + (dith >> r_prec);
+ g1 = g + ((252 - dith) >> g_prec);
+ b1 = b + (dith >> b_prec);
+ pixel = (((r1 - (r1 >> r_prec)) >> r_right) << r_left) |
+ (((g1 - (g1 >> g_prec)) >> g_right) << g_left) |
+ (((b1 - (b1 >> b_prec)) >> b_right) << b_left);
+ for (shift = shift_init; shift >= 0; shift -= 8)
+ {
+ *obptr++ = (pixel >> shift) & 0xff;
+ }
+ bp2 += 3;
+ }
+ bptr += rowstride;
+ obuf += bpl;
+ }
+}
+
+/* This actually works for depths from 3 to 7 */
+static void
+xlib_rgb_convert_4 (XImage *image,
+ int ax, int ay, int width, int height,
+ unsigned char *buf, int rowstride,
+ int x_align, int y_align,
+ XlibRgbCmap *cmap)
+{
+ int x, y;
+ int bpl;
+ unsigned char *obuf, *obptr;
+ unsigned char *bptr, *bp2;
+ int r, g, b;
+ const unsigned char *dmp;
+ int dith;
+
+ bptr = buf;
+ bpl = image->bytes_per_line;
+ obuf = ((unsigned char *)image->data) + ay * bpl + ax;
+ for (y = 0; y < height; y++)
+ {
+ dmp = DM[(y_align + y) & (DM_HEIGHT - 1)];
+ bp2 = bptr;
+ obptr = obuf;
+ for (x = 0; x < width; x += 1)
+ {
+ r = *bp2++;
+ g = *bp2++;
+ b = *bp2++;
+ dith = (dmp[(x_align + x) & (DM_WIDTH - 1)] << 2) | 3;
+ obptr[0] = colorcube_d[(((r + dith) & 0x100) >> 2) |
+ (((g + 258 - dith) & 0x100) >> 5) |
+ (((b + dith) & 0x100) >> 8)];
+ obptr++;
+ }
+ bptr += rowstride;
+ obuf += bpl;
+ }
+}
+
+/* This actually works for depths from 3 to 7 */
+static void
+xlib_rgb_convert_gray4 (XImage *image,
+ int ax, int ay, int width, int height,
+ unsigned char *buf, int rowstride,
+ int x_align, int y_align, XlibRgbCmap *cmap)
+{
+ int x, y;
+ int bpl;
+ unsigned char *obuf, *obptr;
+ unsigned char *bptr, *bp2;
+ int r, g, b;
+ int shift;
+
+ bptr = buf;
+ bpl = image->bytes_per_line;
+ obuf = ((unsigned char *)image->data) + ay * bpl + ax;
+ shift = 9 - image_info->x_visual_info->depth;
+ for (y = 0; y < height; y++)
+ {
+ bp2 = bptr;
+ obptr = obuf;
+ for (x = 0; x < width; x++)
+ {
+ r = *bp2++;
+ g = *bp2++;
+ b = *bp2++;
+ obptr[0] = (g + ((b + r) >> 1)) >> shift;
+ obptr++;
+ }
+ bptr += rowstride;
+ obuf += bpl;
+ }
+}
+
+static void
+xlib_rgb_convert_gray4_pack (XImage *image,
+ int ax, int ay, int width, int height,
+ unsigned char *buf, int rowstride,
+ int x_align, int y_align, XlibRgbCmap *cmap)
+{
+ int x, y;
+ int bpl;
+ unsigned char *obuf, *obptr;
+ unsigned char *bptr, *bp2;
+ int r, g, b;
+ int shift;
+ unsigned char pix0, pix1;
+ /* todo: this is hardcoded to big-endian. Make endian-agile. */
+
+ bptr = buf;
+ bpl = image->bytes_per_line;
+ obuf = ((unsigned char *)image->data) + ay * bpl + (ax >> 1);
+ shift = 9 - image_info->x_visual_info->depth;
+ for (y = 0; y < height; y++)
+ {
+ bp2 = bptr;
+ obptr = obuf;
+ for (x = 0; x < width; x += 2)
+ {
+ r = *bp2++;
+ g = *bp2++;
+ b = *bp2++;
+ pix0 = (g + ((b + r) >> 1)) >> shift;
+ r = *bp2++;
+ g = *bp2++;
+ b = *bp2++;
+ pix1 = (g + ((b + r) >> 1)) >> shift;
+ obptr[0] = (pix0 << 4) | pix1;
+ obptr++;
+ }
+ if (width & 1)
+ {
+ r = *bp2++;
+ g = *bp2++;
+ b = *bp2++;
+ pix0 = (g + ((b + r) >> 1)) >> shift;
+ obptr[0] = (pix0 << 4);
+ }
+ bptr += rowstride;
+ obuf += bpl;
+ }
+}
+
+/* This actually works for depths from 3 to 7 */
+static void
+xlib_rgb_convert_gray4_d (XImage *image,
+ int ax, int ay, int width, int height,
+ unsigned char *buf, int rowstride,
+ int x_align, int y_align, XlibRgbCmap *cmap)
+{
+ int x, y;
+ int bpl;
+ unsigned char *obuf, *obptr;
+ unsigned char *bptr, *bp2;
+ int r, g, b;
+ const unsigned char *dmp;
+ int prec, right;
+ int gray;
+
+ bptr = buf;
+ bpl = image->bytes_per_line;
+ obuf = ((unsigned char *)image->data) + ay * bpl + ax;
+ prec = image_info->x_visual_info->depth;
+ right = 8 - prec;
+ for (y = 0; y < height; y++)
+ {
+ bp2 = bptr;
+ obptr = obuf;
+ dmp = DM[(y_align + y) & (DM_HEIGHT - 1)];
+ for (x = 0; x < width; x++)
+ {
+ r = *bp2++;
+ g = *bp2++;
+ b = *bp2++;
+ gray = (g + ((b + r) >> 1)) >> 1;
+ gray += (dmp[(x_align + x) & (DM_WIDTH - 1)] << 2) >> prec;
+ obptr[0] = (gray - (gray >> prec)) >> right;
+ obptr++;
+ }
+ bptr += rowstride;
+ obuf += bpl;
+ }
+}
+
+static void
+xlib_rgb_convert_gray4_d_pack (XImage *image,
+ int ax, int ay, int width, int height,
+ unsigned char *buf, int rowstride,
+ int x_align, int y_align, XlibRgbCmap *cmap)
+{
+ int x, y;
+ int bpl;
+ unsigned char *obuf, *obptr;
+ unsigned char *bptr, *bp2;
+ int r, g, b;
+ const unsigned char *dmp;
+ int prec, right;
+ int gray;
+ unsigned char pix0, pix1;
+ /* todo: this is hardcoded to big-endian. Make endian-agile. */
+
+ bptr = buf;
+ bpl = image->bytes_per_line;
+ obuf = ((unsigned char *)image->data) + ay * bpl + (ax >> 1);
+ prec = image_info->x_visual_info->depth;
+ right = 8 - prec;
+ for (y = 0; y < height; y++)
+ {
+ bp2 = bptr;
+ obptr = obuf;
+ dmp = DM[(y_align + y) & (DM_HEIGHT - 1)];
+ for (x = 0; x < width; x += 2)
+ {
+ r = *bp2++;
+ g = *bp2++;
+ b = *bp2++;
+ gray = (g + ((b + r) >> 1)) >> 1;
+ gray += (dmp[(x_align + x) & (DM_WIDTH - 1)] << 2) >> prec;
+ pix0 = (gray - (gray >> prec)) >> right;
+ r = *bp2++;
+ g = *bp2++;
+ b = *bp2++;
+ gray = (g + ((b + r) >> 1)) >> 1;
+ gray += (dmp[(x_align + x + 1) & (DM_WIDTH - 1)] << 2) >> prec;
+ pix1 = (gray - (gray >> prec)) >> right;
+ obptr[0] = (pix0 << 4) | pix1;
+ obptr++;
+ }
+ if (width & 1)
+ {
+ r = *bp2++;
+ g = *bp2++;
+ b = *bp2++;
+ gray = (g + ((b + r) >> 1)) >> 1;
+ gray += (dmp[(x_align + x + 1) & (DM_WIDTH - 1)] << 2) >> prec;
+ pix0 = (gray - (gray >> prec)) >> right;
+ obptr[0] = (pix0 << 4);
+ }
+ bptr += rowstride;
+ obuf += bpl;
+ }
+}
+
+static void
+xlib_rgb_convert_1 (XImage *image,
+ int ax, int ay, int width, int height,
+ unsigned char *buf, int rowstride,
+ int x_align, int y_align,
+ XlibRgbCmap *cmap)
+{
+ int x, y;
+ int bpl;
+ unsigned char *obuf, *obptr;
+ unsigned char *bptr, *bp2;
+ int r, g, b;
+ const unsigned char *dmp;
+ int dith;
+ unsigned char byte;
+
+ bptr = buf;
+ bpl = image->bytes_per_line;
+ obuf = ((unsigned char *)image->data) + ay * bpl + (ax >> 3);
+ byte = 0; /* unnecessary, but it keeps gcc from complaining */
+ for (y = 0; y < height; y++)
+ {
+ dmp = DM[(y_align + y) & (DM_HEIGHT - 1)];
+ bp2 = bptr;
+ obptr = obuf;
+ for (x = 0; x < width; x++)
+ {
+ r = *bp2++;
+ g = *bp2++;
+ b = *bp2++;
+ dith = (dmp[(x_align + x) & (DM_WIDTH - 1)] << 4) | 4;
+ byte += byte + (r + g + g + b + dith > 1020);
+ if ((x & 7) == 7)
+ {
+ obptr[0] = byte;
+ obptr++;
+ }
+ }
+ if (x & 7)
+ obptr[0] = byte << (8 - (x & 7));
+ bptr += rowstride;
+ obuf += bpl;
+ }
+}
+
+/* Returns a pointer to the stage buffer. */
+static unsigned char *
+xlib_rgb_ensure_stage (void)
+{
+ if (image_info->stage_buf == NULL)
+ image_info->stage_buf = malloc (IMAGE_HEIGHT * STAGE_ROWSTRIDE);
+ return image_info->stage_buf;
+}
+
+/* This is slow. Speed me up, please. */
+static void
+xlib_rgb_32_to_stage (unsigned char *buf, int rowstride, int width, int height)
+{
+ int x, y;
+ unsigned char *pi_start, *po_start;
+ unsigned char *pi, *po;
+
+ pi_start = buf;
+ po_start = xlib_rgb_ensure_stage ();
+ for (y = 0; y < height; y++)
+ {
+ pi = pi_start;
+ po = po_start;
+ for (x = 0; x < width; x++)
+ {
+ *po++ = *pi++;
+ *po++ = *pi++;
+ *po++ = *pi++;
+ pi++;
+ }
+ pi_start += rowstride;
+ po_start += STAGE_ROWSTRIDE;
+ }
+}
+
+/* Generic 32bit RGB conversion function - convert to 24bit packed, then
+ go from there. */
+static void
+xlib_rgb_convert_32_generic (XImage *image,
+ int ax, int ay, int width, int height,
+ unsigned char *buf, int rowstride,
+ int x_align, int y_align, XlibRgbCmap *cmap)
+{
+ xlib_rgb_32_to_stage (buf, rowstride, width, height);
+
+ (*image_info->conv) (image, ax, ay, width, height,
+ image_info->stage_buf, STAGE_ROWSTRIDE,
+ x_align, y_align, cmap);
+}
+
+/* Generic 32bit RGB conversion function - convert to 24bit packed, then
+ go from there. */
+static void
+xlib_rgb_convert_32_generic_d (XImage *image,
+ int ax, int ay, int width, int height,
+ unsigned char *buf, int rowstride,
+ int x_align, int y_align, XlibRgbCmap *cmap)
+{
+ xlib_rgb_32_to_stage (buf, rowstride, width, height);
+
+ (*image_info->conv_d) (image, ax, ay, width, height,
+ image_info->stage_buf, STAGE_ROWSTRIDE,
+ x_align, y_align, cmap);
+}
+
+/* This is slow. Speed me up, please. */
+static void
+xlib_rgb_gray_to_stage (unsigned char *buf, int rowstride, int width, int height)
+{
+ int x, y;
+ unsigned char *pi_start, *po_start;
+ unsigned char *pi, *po;
+ unsigned char gray;
+
+ pi_start = buf;
+ po_start = xlib_rgb_ensure_stage ();
+ for (y = 0; y < height; y++)
+ {
+ pi = pi_start;
+ po = po_start;
+ for (x = 0; x < width; x++)
+ {
+ gray = *pi++;
+ *po++ = gray;
+ *po++ = gray;
+ *po++ = gray;
+ }
+ pi_start += rowstride;
+ po_start += STAGE_ROWSTRIDE;
+ }
+}
+
+/* Generic gray conversion function - convert to 24bit packed, then go
+ from there. */
+static void
+xlib_rgb_convert_gray_generic (XImage *image,
+ int ax, int ay, int width, int height,
+ unsigned char *buf, int rowstride,
+ int x_align, int y_align, XlibRgbCmap *cmap)
+{
+ xlib_rgb_gray_to_stage (buf, rowstride, width, height);
+
+ (*image_info->conv) (image, ax, ay, width, height,
+ image_info->stage_buf, STAGE_ROWSTRIDE,
+ x_align, y_align, cmap);
+}
+
+static void
+xlib_rgb_convert_gray_generic_d (XImage *image,
+ int ax, int ay, int width, int height,
+ unsigned char *buf, int rowstride,
+ int x_align, int y_align, XlibRgbCmap *cmap)
+{
+ xlib_rgb_gray_to_stage (buf, rowstride, width, height);
+
+ (*image_info->conv_d) (image, ax, ay, width, height,
+ image_info->stage_buf, STAGE_ROWSTRIDE,
+ x_align, y_align, cmap);
+}
+
+/* Render grayscale using indexed method. */
+static void
+xlib_rgb_convert_gray_cmap (XImage *image,
+ int ax, int ay, int width, int height,
+ unsigned char *buf, int rowstride,
+ int x_align, int y_align, XlibRgbCmap *cmap)
+{
+ (*image_info->conv_indexed) (image, ax, ay, width, height,
+ buf, rowstride,
+ x_align, y_align, image_info->gray_cmap);
+}
+
+#if 0
+static void
+xlib_rgb_convert_gray_cmap_d (XImage *image,
+ int ax, int ay, int width, int height,
+ unsigned char *buf, int rowstride,
+ int x_align, int y_align, XlibRgbCmap *cmap)
+{
+ (*image_info->conv_indexed_d) (image, ax, ay, width, height,
+ buf, rowstride,
+ x_align, y_align, image_info->gray_cmap);
+}
+#endif
+
+/* This is slow. Speed me up, please. */
+static void
+xlib_rgb_indexed_to_stage (unsigned char *buf, int rowstride, int width, int height,
+ XlibRgbCmap *cmap)
+{
+ int x, y;
+ unsigned char *pi_start, *po_start;
+ unsigned char *pi, *po;
+ int rgb;
+
+ pi_start = buf;
+ po_start = xlib_rgb_ensure_stage ();
+ for (y = 0; y < height; y++)
+ {
+ pi = pi_start;
+ po = po_start;
+ for (x = 0; x < width; x++)
+ {
+ rgb = cmap->colors[*pi++];
+ *po++ = rgb >> 16;
+ *po++ = (rgb >> 8) & 0xff;
+ *po++ = rgb & 0xff;
+ }
+ pi_start += rowstride;
+ po_start += STAGE_ROWSTRIDE;
+ }
+}
+
+/* Generic gray conversion function - convert to 24bit packed, then go
+ from there. */
+static void
+xlib_rgb_convert_indexed_generic (XImage *image,
+ int ax, int ay, int width, int height,
+ unsigned char *buf, int rowstride,
+ int x_align, int y_align, XlibRgbCmap *cmap)
+{
+ xlib_rgb_indexed_to_stage (buf, rowstride, width, height, cmap);
+
+ (*image_info->conv) (image, ax, ay, width, height,
+ image_info->stage_buf, STAGE_ROWSTRIDE,
+ x_align, y_align, cmap);
+}
+
+static void
+xlib_rgb_convert_indexed_generic_d (XImage *image,
+ int ax, int ay, int width, int height,
+ unsigned char *buf, int rowstride,
+ int x_align, int y_align,
+ XlibRgbCmap *cmap)
+{
+ xlib_rgb_indexed_to_stage (buf, rowstride, width, height, cmap);
+
+ (*image_info->conv_d) (image, ax, ay, width, height,
+ image_info->stage_buf, STAGE_ROWSTRIDE,
+ x_align, y_align, cmap);
+}
+
+/* Select a conversion function based on the visual and a
+ representative image. */
+static void
+xlib_rgb_select_conv (XImage *image, ByteOrder byte_order)
+{
+ int depth, byterev;
+ int vtype; /* visual type */
+ int bpp; /* bits per pixel - from the visual */
+ guint32 red_mask, green_mask, blue_mask;
+ XlibRgbConvFunc conv, conv_d;
+ XlibRgbConvFunc conv_32, conv_32_d;
+ XlibRgbConvFunc conv_gray, conv_gray_d;
+ XlibRgbConvFunc conv_indexed, conv_indexed_d;
+ Bool mask_rgb, mask_bgr;
+
+ depth = image_info->x_visual_info->depth;
+ bpp = image->bits_per_pixel;
+ if (xlib_rgb_verbose)
+ printf ("Chose visual 0x%x, image bpp=%d, %s first\n",
+ (int)image_info->x_visual_info->visual->visualid,
+ bpp, byte_order == LSB_FIRST ? "lsb" : "msb");
+
+#if G_BYTE_ORDER == G_BIG_ENDIAN
+ byterev = (byte_order == LSB_FIRST);
+#else
+ byterev = (byte_order == MSB_FIRST);
+#endif
+
+ vtype = image_info->x_visual_info->class;
+ if (vtype == DirectColor)
+ vtype = TrueColor;
+
+ red_mask = image_info->x_visual_info->red_mask;
+ green_mask = image_info->x_visual_info->green_mask;
+ blue_mask = image_info->x_visual_info->blue_mask;
+
+ mask_rgb = red_mask == 0xff0000 && green_mask == 0xff00 && blue_mask == 0xff;
+ mask_bgr = red_mask == 0xff && green_mask == 0xff00 && blue_mask == 0xff0000;
+
+ conv = NULL;
+ conv_d = NULL;
+
+ conv_32 = xlib_rgb_convert_32_generic;
+ conv_32_d = xlib_rgb_convert_32_generic_d;
+
+ conv_gray = xlib_rgb_convert_gray_generic;
+ conv_gray_d = xlib_rgb_convert_gray_generic_d;
+
+ conv_indexed = xlib_rgb_convert_indexed_generic;
+ conv_indexed_d = xlib_rgb_convert_indexed_generic_d;
+
+ image_info->dith_default = FALSE;
+
+ if (image_info->bitmap)
+ conv = xlib_rgb_convert_1;
+ else if (bpp == 16 && depth == 16 && !byterev &&
+ red_mask == 0xf800 && green_mask == 0x7e0 && blue_mask == 0x1f)
+ {
+ conv = xlib_rgb_convert_565;
+ conv_d = xlib_rgb_convert_565_d;
+ conv_gray = xlib_rgb_convert_565_gray;
+ xlib_rgb_preprocess_dm_565 ();
+ }
+ else if (bpp == 16 && depth == 16 &&
+ vtype == TrueColor&& byterev &&
+ red_mask == 0xf800 && green_mask == 0x7e0 && blue_mask == 0x1f)
+ conv = xlib_rgb_convert_565_br;
+
+ else if (bpp == 16 && depth == 15 &&
+ vtype == TrueColor && !byterev &&
+ red_mask == 0x7c00 && green_mask == 0x3e0 && blue_mask == 0x1f)
+ conv = xlib_rgb_convert_555;
+
+ else if (bpp == 16 && depth == 15 &&
+ vtype == TrueColor && byterev &&
+ red_mask == 0x7c00 && green_mask == 0x3e0 && blue_mask == 0x1f)
+ conv = xlib_rgb_convert_555_br;
+
+ /* I'm not 100% sure about the 24bpp tests - but testing will show*/
+ else if (bpp == 24 && depth == 24 && vtype == TrueColor &&
+ ((mask_rgb && byte_order == LSB_FIRST) ||
+ (mask_bgr && byte_order == MSB_FIRST)))
+ conv = xlib_rgb_convert_888_lsb;
+ else if (bpp == 24 && depth == 24 && vtype == TrueColor &&
+ ((mask_rgb && byte_order == MSB_FIRST) ||
+ (mask_bgr && byte_order == LSB_FIRST)))
+ conv = xlib_rgb_convert_888_msb;
+#if G_BYTE_ORDER == G_BIG_ENDIAN
+ else if (bpp == 32 && depth == 24 && vtype == TrueColor &&
+ (mask_rgb && byte_order == LSB_FIRST))
+ conv = xlib_rgb_convert_0888_br;
+ else if (bpp == 32 && depth == 24 && vtype == TrueColor &&
+ (mask_rgb && byte_order == MSB_FIRST))
+ conv = xlib_rgb_convert_0888;
+ else if (bpp == 32 && depth == 24 && vtype == TrueColor &&
+ (mask_bgr && byte_order == MSB_FIRST))
+ conv = xlib_rgb_convert_8880_br;
+#else
+ else if (bpp == 32 && depth == 24 && vtype == TrueColor &&
+ (mask_rgb && byte_order == MSB_FIRST))
+ conv = xlib_rgb_convert_0888_br;
+ else if (bpp == 32 && (depth == 32 || depth == 24) && vtype == TrueColor &&
+ (mask_rgb && byte_order == LSB_FIRST))
+ conv = xlib_rgb_convert_0888;
+ else if (bpp == 32 && depth == 24 && vtype == TrueColor &&
+ (mask_bgr && byte_order == LSB_FIRST))
+ conv = xlib_rgb_convert_8880_br;
+#endif
+
+ else if (vtype == TrueColor && byte_order == LSB_FIRST)
+ {
+ conv = xlib_rgb_convert_truecolor_lsb;
+ conv_d = xlib_rgb_convert_truecolor_lsb_d;
+ }
+ else if (vtype == TrueColor && byte_order == MSB_FIRST)
+ {
+ conv = xlib_rgb_convert_truecolor_msb;
+ conv_d = xlib_rgb_convert_truecolor_msb_d;
+ }
+ else if (bpp == 8 && depth == 8 && (vtype == PseudoColor
+#ifdef ENABLE_GRAYSCALE
+ || vtype == GrayScale
+#endif
+ ))
+ {
+ image_info->dith_default = TRUE;
+ conv = xlib_rgb_convert_8;
+ if (vtype != GrayScale)
+ {
+ if (image_info->nred_shades == 6 &&
+ image_info->ngreen_shades == 6 &&
+ image_info->nblue_shades == 6)
+ conv_d = xlib_rgb_convert_8_d666;
+ else
+ conv_d = xlib_rgb_convert_8_d;
+ }
+ conv_indexed = xlib_rgb_convert_8_indexed;
+ conv_gray = xlib_rgb_convert_gray_cmap;
+ }
+ else if (bpp == 8 && depth == 8 && (vtype == StaticGray
+#ifdef not_ENABLE_GRAYSCALE
+ || vtype == GrayScale
+#endif
+ ))
+ {
+ conv = xlib_rgb_convert_gray8;
+ conv_gray = xlib_rgb_convert_gray8_gray;
+ }
+ else if (bpp == 8 && depth < 8 && depth >= 2 &&
+ (vtype == StaticGray
+ || vtype == GrayScale))
+ {
+ conv = xlib_rgb_convert_gray4;
+ conv_d = xlib_rgb_convert_gray4_d;
+ }
+ else if (bpp == 8 && depth < 8 && depth >= 3)
+ {
+ conv = xlib_rgb_convert_4;
+ }
+ else if (bpp == 4 && depth <= 4 && depth >= 2 &&
+ (vtype == StaticGray
+ || vtype == GrayScale))
+ {
+ conv = xlib_rgb_convert_gray4_pack;
+ conv_d = xlib_rgb_convert_gray4_d_pack;
+ }
+
+ if (conv_d == NULL)
+ conv_d = conv;
+
+ image_info->conv = conv;
+ image_info->conv_d = conv_d;
+
+ image_info->conv_32 = conv_32;
+ image_info->conv_32_d = conv_32_d;
+
+ image_info->conv_gray = conv_gray;
+ image_info->conv_gray_d = conv_gray_d;
+
+ image_info->conv_indexed = conv_indexed;
+ image_info->conv_indexed_d = conv_indexed_d;
+}
+
+static int horiz_idx;
+static int horiz_y = IMAGE_HEIGHT;
+static int vert_idx;
+static int vert_x = IMAGE_WIDTH;
+static int tile_idx;
+static int tile_x = IMAGE_WIDTH;
+static int tile_y1 = IMAGE_HEIGHT;
+static int tile_y2 = IMAGE_HEIGHT;
+
+#ifdef VERBOSE
+static int sincelast;
+#endif
+
+/* Defining NO_FLUSH can cause inconsistent screen updates, but is useful
+ for performance evaluation. */
+
+#undef NO_FLUSH
+
+static int
+xlib_rgb_alloc_scratch_image (void)
+{
+ if (static_image_idx == N_IMAGES)
+ {
+#ifndef NO_FLUSH
+ XFlush(image_info->display);
+#endif
+#ifdef VERBOSE
+ printf ("flush, %d puts since last flush\n", sincelast);
+ sincelast = 0;
+#endif
+ static_image_idx = 0;
+ horiz_y = IMAGE_HEIGHT;
+ vert_x = IMAGE_WIDTH;
+ tile_x = IMAGE_WIDTH;
+ tile_y1 = tile_y2 = IMAGE_HEIGHT;
+ }
+ return static_image_idx++;
+}
+
+static XImage *
+xlib_rgb_alloc_scratch (int width, int height, int *ax, int *ay)
+{
+ XImage *image;
+ int idx;
+
+ if (width >= (IMAGE_WIDTH >> 1))
+ {
+ if (height >= (IMAGE_HEIGHT >> 1))
+ {
+ idx = xlib_rgb_alloc_scratch_image ();
+ *ax = 0;
+ *ay = 0;
+ }
+ else
+ {
+ if (height + horiz_y > IMAGE_HEIGHT)
+ {
+ horiz_idx = xlib_rgb_alloc_scratch_image ();
+ horiz_y = 0;
+ }
+ idx = horiz_idx;
+ *ax = 0;
+ *ay = horiz_y;
+ horiz_y += height;
+ }
+ }
+ else
+ {
+ if (height >= (IMAGE_HEIGHT >> 1))
+ {
+ if (width + vert_x > IMAGE_WIDTH)
+ {
+ vert_idx = xlib_rgb_alloc_scratch_image ();
+ vert_x = 0;
+ }
+ idx = vert_idx;
+ *ax = vert_x;
+ *ay = 0;
+ /* using 3 and -4 would be slightly more efficient on 32-bit machines
+ with > 1bpp displays */
+ vert_x += (width + 7) & -8;
+ }
+ else
+ {
+ if (width + tile_x > IMAGE_WIDTH)
+ {
+ tile_y1 = tile_y2;
+ tile_x = 0;
+ }
+ if (height + tile_y1 > IMAGE_HEIGHT)
+ {
+ tile_idx = xlib_rgb_alloc_scratch_image ();
+ tile_x = 0;
+ tile_y1 = 0;
+ tile_y2 = 0;
+ }
+ if (height + tile_y1 > tile_y2)
+ tile_y2 = height + tile_y1;
+ idx = tile_idx;
+ *ax = tile_x;
+ *ay = tile_y1;
+ tile_x += (width + 7) & -8;
+ }
+ }
+ image = static_image[idx];
+#ifdef VERBOSE
+ printf ("index %d, x %d, y %d (%d x %d)\n", idx, *ax, *ay, width, height);
+ sincelast++;
+#endif
+ return image;
+}
+
+static void
+xlib_draw_rgb_image_core (Drawable drawable,
+ GC gc,
+ int x,
+ int y,
+ int width,
+ int height,
+ unsigned char *buf,
+ int pixstride,
+ int rowstride,
+ XlibRgbConvFunc conv,
+ XlibRgbCmap *cmap,
+ int xdith,
+ int ydith)
+{
+ int ay, ax;
+ int xs0, ys0;
+ XImage *image;
+ int width1, height1;
+ unsigned char *buf_ptr;
+
+ if (image_info->bitmap)
+ {
+ if (image_info->own_gc == 0)
+ {
+ XColor color;
+
+ image_info->own_gc = XCreateGC(image_info->display,
+ drawable,
+ 0, NULL);
+ color.pixel = WhitePixel(image_info->display,
+ image_info->screen_num);
+ XSetForeground(image_info->display, image_info->own_gc, color.pixel);
+ color.pixel = BlackPixel(image_info->display,
+ image_info->screen_num);
+ XSetBackground(image_info->display, image_info->own_gc, color.pixel);
+ }
+ gc = image_info->own_gc;
+ }
+ for (ay = 0; ay < height; ay += IMAGE_HEIGHT)
+ {
+ height1 = MIN (height - ay, IMAGE_HEIGHT);
+ for (ax = 0; ax < width; ax += IMAGE_WIDTH)
+ {
+ width1 = MIN (width - ax, IMAGE_WIDTH);
+ buf_ptr = buf + ay * rowstride + ax * pixstride;
+
+ image = xlib_rgb_alloc_scratch (width1, height1, &xs0, &ys0);
+
+ conv (image, xs0, ys0, width1, height1, buf_ptr, rowstride,
+ x + ax + xdith, y + ay + ydith, cmap);
+
+#ifndef DONT_ACTUALLY_DRAW
+ XPutImage(image_info->display, drawable, gc, image,
+ xs0, ys0, x + ax, y + ay, (unsigned int)width1, (unsigned int)height1);
+#endif
+ }
+ }
+}
+
+
+/**
+ * xlib_draw_rgb_image:
+ * @drawable: Destination drawable.
+ * @gc: A graphic context.
+ * @x: Leftmost coordinate of the destination rectangle.
+ * @y: Upper coordinate of the destination rectangle.
+ * @width: Width of the destination rectangle, in pixels.
+ * @height: Height of the destination rectangle, in pixels.
+ * @dith: Dithering method to use.
+ * @rgb_buf: Pointer to the pixel in the RGB buffer that corresponds to the
+ * upper-left corner of the rectangular region to render.
+ * @rowstride: Offset between pixel rows in the RGB buffer, in bytes.
+ *
+ * Renders an RGB buffer to a drawable. Pixels are specified as RGB triplets
+ * with 8 bits per channel. An image will thus look like an RGBRGBRGBRGB
+ * sequence of 8-bit values. This function does not let you specify dither
+ * offsets; applications that need to render partial regions of a buffer to
+ * build the final image should use xlib_draw_rgb_image_dithalign() instead.
+ **/
+void
+xlib_draw_rgb_image (Drawable drawable,
+ GC gc,
+ int x,
+ int y,
+ int width,
+ int height,
+ XlibRgbDither dith,
+ unsigned char *rgb_buf,
+ int rowstride)
+{
+ if (dith == XLIB_RGB_DITHER_NONE || (dith == XLIB_RGB_DITHER_NORMAL &&
+ !image_info->dith_default))
+ xlib_draw_rgb_image_core (drawable, gc, x, y, width, height,
+ rgb_buf, 3, rowstride, image_info->conv, NULL,
+ 0, 0);
+ else
+ xlib_draw_rgb_image_core (drawable, gc, x, y, width, height,
+ rgb_buf, 3, rowstride, image_info->conv_d, NULL,
+ 0, 0);
+}
+
+/**
+ * xlib_draw_rgb_image_dithalign:
+ * @drawable: Destination drawable.
+ * @gc: A graphic context.
+ * @x: Leftmost coordinate of the destination rectangle.
+ * @y: Upper coordinate of the destination rectangle.
+ * @width: Width of the destination rectangle, in pixels.
+ * @height: Height of the destination rectangle, in pixels.
+ * @dith: Dithering method to use.
+ * @rgb_buf: Pointer to the pixel in the RGB buffer that corresponds to the
+ * upper-left corner of the rectangular region to render.
+ * @rowstride: Offset between pixel rows in the RGB buffer, in bytes.
+ * @xdith: X offset for the dither mask.
+ * @ydith: Y offset for the dither mask.
+ *
+ * Renders an RGB buffer to a drawable. Pixels are specified as RGB triplets
+ * with 8 bits per channel. An image will thus look like an RGBRGBRGBRGB
+ * sequence of 8-bit values. This function lets you specify a pair of dither
+ * offsets. It should be used when you need to render regions of an RGB buffer
+ * separately to form the final image; the dither offsets let you align the
+ * dither mask appropriately.
+ **/
+void
+xlib_draw_rgb_image_dithalign (Drawable drawable,
+ GC gc,
+ int x,
+ int y,
+ int width,
+ int height,
+ XlibRgbDither dith,
+ unsigned char *rgb_buf,
+ int rowstride,
+ int xdith,
+ int ydith)
+{
+ if (dith == XLIB_RGB_DITHER_NONE || (dith == XLIB_RGB_DITHER_NORMAL &&
+ !image_info->dith_default))
+ xlib_draw_rgb_image_core (drawable, gc, x, y, width, height,
+ rgb_buf, 3, rowstride, image_info->conv, NULL,
+ xdith, ydith);
+ else
+ xlib_draw_rgb_image_core (drawable, gc, x, y, width, height,
+ rgb_buf, 3, rowstride, image_info->conv_d, NULL,
+ xdith, ydith);
+}
+
+/**
+ * xlib_draw_rgb_32_image:
+ * @drawable: Destination drawable.
+ * @gc: A graphic context.
+ * @x: Leftmost coordinate of the destination rectangle.
+ * @y: Upper coordinate of the destination rectangle.
+ * @width: Width of the destination rectangle, in pixels.
+ * @height: Height of the destination rectangle, in pixels.
+ * @dith: Dithering method to use.
+ * @buf: Pointer to the pixel in the RGB buffer that corresponds to the
+ * upper-left corner of the rectangular region to render.
+ * @rowstride: Offset between pixel rows in the RGB buffer, in bytes.
+ *
+ * This function is analogous to xlib_draw_rgb_image(), but it lets you use
+ * 32-bit RGB buffers with pixels specified as 0xRRGGBB00. The
+ * least-significant 8 bits are actually discarded. This function can lead to
+ * faster results than xlib_draw_rgb_image() since the pixels are aligned on
+ * 32-bit boundaries.
+ **/
+void
+xlib_draw_rgb_32_image (Drawable drawable,
+ GC gc,
+ int x,
+ int y,
+ int width,
+ int height,
+ XlibRgbDither dith,
+ unsigned char *buf,
+ int rowstride)
+{
+ if (dith == XLIB_RGB_DITHER_NONE || (dith == XLIB_RGB_DITHER_NORMAL &&
+ !image_info->dith_default))
+ xlib_draw_rgb_image_core (drawable, gc, x, y, width, height,
+ buf, 4, rowstride,
+ image_info->conv_32, NULL, 0, 0);
+ else
+ xlib_draw_rgb_image_core (drawable, gc, x, y, width, height,
+ buf, 4, rowstride,
+ image_info->conv_32_d, NULL, 0, 0);
+}
+
+static void
+xlib_rgb_make_gray_cmap (XlibRgbInfo *info)
+{
+ guint32 rgb[256];
+ int i;
+
+ for (i = 0; i < 256; i++)
+ rgb[i] = (i << 16) | (i << 8) | i;
+ info->gray_cmap = xlib_rgb_cmap_new (rgb, 256);
+}
+
+/**
+ * xlib_draw_gray_image:
+ * @drawable: Destination drawable.
+ * @gc: A graphic context.
+ * @x: Leftmost coordinate of the destination rectangle.
+ * @y: Upper coordinate of the destination rectangle.
+ * @width: Width of the destination rectangle, in pixels.
+ * @height: Height of thd destination rectangle, in pixels.
+ * @dith: Dithering method to use.
+ * @buf: Pointer to the pixel in the grayscale buffer that corresponds to the
+ * upper-left corner of the rectangular region to render.
+ * @rowstride: Offset between pixel rows in the grayscale buffer, in pixels.
+ *
+ * Renders a grayscale buffer to a drawable. Pixels are specified as 8-bit
+ * intensity values. An image will thus look as a GGGGGG sequence of 8-bit
+ * values.
+ **/
+void
+xlib_draw_gray_image (Drawable drawable,
+ GC gc,
+ int x,
+ int y,
+ int width,
+ int height,
+ XlibRgbDither dith,
+ unsigned char *buf,
+ int rowstride)
+{
+ if (image_info->bpp == 1 &&
+ image_info->gray_cmap == NULL &&
+ (image_info->x_visual_info->class == PseudoColor ||
+ image_info->x_visual_info->class == GrayScale))
+ xlib_rgb_make_gray_cmap (image_info);
+
+ if (dith == XLIB_RGB_DITHER_NONE || (dith == XLIB_RGB_DITHER_NORMAL &&
+ !image_info->dith_default))
+ xlib_draw_rgb_image_core (drawable, gc, x, y, width, height,
+ buf, 1, rowstride,
+ image_info->conv_gray, NULL, 0, 0);
+ else
+ xlib_draw_rgb_image_core (drawable, gc, x, y, width, height,
+ buf, 1, rowstride,
+ image_info->conv_gray_d, NULL, 0, 0);
+}
+
+/**
+ * xlib_rgb_cmap_new:
+ * @colors: FIXME
+ * @n_colors: FIXME
+ *
+ * FIXME
+ *
+ * Return value: FIXME
+ **/
+XlibRgbCmap *
+xlib_rgb_cmap_new (guint32 *colors, int n_colors)
+{
+ XlibRgbCmap *cmap;
+ int i, j;
+ guint32 rgb;
+
+ if (n_colors < 0)
+ return NULL;
+ if (n_colors > 256)
+ return NULL;
+ cmap = malloc(sizeof(XlibRgbCmap));
+ memcpy (cmap->colors, colors, n_colors * sizeof(guint32));
+ if (image_info->bpp == 1 &&
+ (image_info->x_visual_info->class == PseudoColor ||
+ image_info->x_visual_info->class == GrayScale))
+ for (i = 0; i < n_colors; i++)
+ {
+ rgb = colors[i];
+ j = ((rgb & 0xf00000) >> 12) |
+ ((rgb & 0xf000) >> 8) |
+ ((rgb & 0xf0) >> 4);
+#ifdef VERBOSE
+ printf ("%d %x %x %d\n", i, j, colorcube[j]);
+#endif
+ cmap->lut[i] = colorcube[j];
+ }
+ return cmap;
+}
+
+/**
+ * xlib_rgb_cmap_free:
+ * @cmap: An XlibRGB colormap.
+ *
+ * Frees an XlibRGB colormap.
+ **/
+void
+xlib_rgb_cmap_free (XlibRgbCmap *cmap)
+{
+ free (cmap);
+}
+
+/**
+ * xlib_draw_indexed_image:
+ * @drawable: FIXME
+ * @gc: FIXME
+ * @x: FIXME
+ * @y: FIXME
+ * @width: FIXME
+ * @height: FIXME
+ * @dith: FIXME
+ * @buf: FIXME
+ * @rowstride: FIXME
+ * @cmap: FIXME
+ *
+ * FIXME
+ **/
+void
+xlib_draw_indexed_image (Drawable drawable,
+ GC gc,
+ int x,
+ int y,
+ int width,
+ int height,
+ XlibRgbDither dith,
+ unsigned char *buf,
+ int rowstride,
+ XlibRgbCmap *cmap)
+{
+ if (dith == XLIB_RGB_DITHER_NONE || (dith == XLIB_RGB_DITHER_NORMAL &&
+ !image_info->dith_default))
+ xlib_draw_rgb_image_core (drawable, gc, x, y, width, height,
+ buf, 1, rowstride,
+ image_info->conv_indexed, cmap, 0, 0);
+ else
+ xlib_draw_rgb_image_core (drawable, gc, x, y, width, height,
+ buf, 1, rowstride,
+ image_info->conv_indexed_d, cmap, 0, 0);
+}
+
+/**
+ * xlib_rgb_ditherable:
+ *
+ * Queries whether XlibRGB supports dithering for its chosen visual.
+ *
+ * Return value: TRUE if dithering can be performed for the visual that XlibRGB
+ * is using, FALSE otherwise.
+ **/
+Bool
+xlib_rgb_ditherable (void)
+{
+ return (image_info->conv != image_info->conv_d);
+}
+
+/**
+ * xlib_rgb_get_cmap:
+ *
+ * Queries the X colormap that XlibRGB is using.
+ *
+ * Return value: An X colormap.
+ **/
+Colormap
+xlib_rgb_get_cmap (void)
+{
+ /* xlib_rgb_init (); */
+ if (image_info)
+ return image_info->cmap;
+ else
+ return 0;
+}
+
+/**
+ * xlib_rgb_get_visual:
+ *
+ * Queries the visual that XlibRGB is using.
+ *
+ * Return value: An X visual.
+ **/
+Visual *
+xlib_rgb_get_visual (void)
+{
+ /* xlib_rgb_init (); */
+ if (image_info)
+ return image_info->x_visual_info->visual;
+ else
+ return 0;
+}
+
+/**
+ * xlib_rgb_get_visual_info:
+ *
+ * Queries the visual info structure for the visual that XlibRGB is using.
+ *
+ * Return value: An XVisualInfo structure.
+ **/
+XVisualInfo *
+xlib_rgb_get_visual_info (void)
+{
+ /* xlib_rgb_init (); */
+ if (image_info)
+ return image_info->x_visual_info;
+ else
+ return 0;
+}
+
+/**
+ * xlib_rgb_get_depth:
+ *
+ * Queries the depth of the visual that XlibRGB is using.
+ *
+ * Return value: Bit depth.
+ **/
+int
+xlib_rgb_get_depth (void)
+{
+ XVisualInfo * v = xlib_rgb_get_visual_info();
+
+ if (v)
+ {
+ return v->depth;
+ }
+
+ return 0;
+}
+
+/**
+ * xlib_rgb_get_display:
+ *
+ * Queries the X display that XlibRGB is using.
+ *
+ * Return value: An X display.
+ **/
+Display *
+xlib_rgb_get_display (void)
+{
+ if (image_info)
+ return image_info->display;
+
+ return NULL;
+}
+
+/**
+ * xlib_rgb_get_screen:
+ *
+ * Queries the screen that XlibRGB is using.
+ *
+ * Return value: An X screen.
+ **/
+Screen *
+xlib_rgb_get_screen (void)
+{
+ if (image_info)
+ return image_info->screen;
+
+ return NULL;
+}
projects / ~andy / gtk / commitdiff