/* GDK - The GIMP Drawing Kit * Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the * Free Software Foundation, Inc., 59 Temple Place - Suite 330, * Boston, MA 02111-1307, USA. */ /* For more information on GdkRgb, see http://www.levien.com/gdkrgb/ Raph Levien */ /* * Modified by the GTK+ Team and others 1997-2000. See the AUTHORS * file for a list of people on the GTK+ Team. See the ChangeLog * files for a list of changes. These files are distributed with * GTK+ at ftp://ftp.gtk.org/pub/gtk/. */ #include #if HAVE_CONFIG_H # include # if STDC_HEADERS # include # include # include # endif #else # include # include #endif #define ENABLE_GRAYSCALE #ifdef GDK_RGB_STANDALONE /* Compiling as a standalone module (i.e. with Gtk 1.0) */ /* gtk/gtk.h is already included in gdkrgbstub.c */ #include "config.h" #include #else /* Compiling as a part of Gtk 1.1 or later */ #include "config.h" #include "gdkprivate.h" #endif #include "gdk.h" /* For gdk_flush() */ #include "gdkrgb.h" typedef struct _GdkRgbInfo GdkRgbInfo; typedef struct _GdkRgbCmapInfo GdkRgbCmapInfo; typedef void (*GdkRgbConvFunc) (GdkRgbInfo *image_info, GdkImage *image, gint x0, gint y0, gint width, gint height, guchar *buf, int rowstride, gint x_align, gint y_align, GdkRgbCmap *cmap); static const gchar* visual_names[] = { "static gray", "grayscale", "static color", "pseudo color", "true color", "direct color", }; #define REGION_WIDTH 256 #define STAGE_ROWSTRIDE (REGION_WIDTH * 3) #define REGION_HEIGHT 64 /* We have N_REGION REGION_WIDTH x REGION_HEIGHT regions divided * up between n_images different images. possible_n_images gives * various divisors of N_REGIONS. The reason for allowing this * flexibility is that we want to create as few images as possible, * but we want to deal with the abberant systems that have a SHMMAX * limit less than * * REGION_WIDTH * REGION_HEIGHT * N_REGIONS * 4 (384k) * * (Are there any such?) */ #define N_REGIONS 6 static const int possible_n_images[] = { 1, 2, 3, 6 }; /* 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 _GdkRgbInfo { GdkVisual *visual; GdkColormap *cmap; guint nred_shades; guint ngreen_shades; guint nblue_shades; guint ngray_shades; guint nreserved; guint bpp; gint cmap_alloced; gdouble gamma; /* Generally, the stage buffer is used to convert 32bit RGB, gray, and indexed images into 24 bit packed RGB. */ guchar *stage_buf; GdkRgbCmap *gray_cmap; gboolean dith_default; gboolean bitmap; /* set true if in 1 bit per pixel mode */ GdkGC *own_gc; /* Convert functions */ GdkRgbConvFunc conv; GdkRgbConvFunc conv_d; GdkRgbConvFunc conv_32; GdkRgbConvFunc conv_32_d; GdkRgbConvFunc conv_gray; GdkRgbConvFunc conv_gray_d; GdkRgbConvFunc conv_indexed; GdkRgbConvFunc conv_indexed_d; gint n_images; GdkImage *static_image[N_REGIONS]; gint static_image_idx; /* In order to optimize filling fractions, we simultaneously fill in up * to three regions of size REGION_WIDTH * REGION_HEIGHT: one * for images that are taller than REGION_HEIGHT / 2, and must * be tiled horizontally. One for images that are wider than * REGION_WIDTH / 2 and must be tiled vertically, and a third * for images smaller than REGION_HEIGHT / 2 x REGION_WIDTH x 2 * that we tile in horizontal rows. */ gint horiz_idx; gint horiz_y; gint vert_idx; gint vert_x; /* tile_y1 and tile_y2 define the horizontal band into * which we are tiling images. tile_x is the x extent to * which that is filled */ gint tile_idx; gint tile_x; gint tile_y1; gint tile_y2; guchar *colorcube; guchar *colorcube_d; /* We need to track LUT's for pairs of GdkRgbInfo / GdkRgbCmap, so we * keep a list of pointers to GdkRgbCmapInfo on both structures so we * can remove as necessary when freeing a GdkRgbInfo or GdkRgbCmap */ GSList *cmap_info_list; }; struct _GdkRgbCmapInfo { GdkRgbInfo *image_info; GdkRgbCmap *cmap; guchar lut[256]; /* For 8-bit modes */ }; static GdkRgbCmapInfo *gdk_rgb_cmap_get_info (GdkRgbCmap *cmap, GdkRgbInfo *image_info); static const char *gdk_rgb_key = "gdk-rgb-info"; static GQuark gdk_rgb_quark = 0; static gboolean gdk_rgb_install_cmap = FALSE; static gint gdk_rgb_min_colors = 5 * 5 * 5; static gboolean gdk_rgb_verbose = FALSE; static gint gdk_rgb_cmap_fail (const char *msg, GdkColormap *cmap, gulong *pixels) { gulong free_pixels[256]; gint n_free; gint i; #ifdef VERBOSE g_print ("%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) gdk_colors_free (cmap, free_pixels, n_free, 0); return 0; } static void gdk_rgb_make_colorcube (GdkRgbInfo *image_info, gulong *pixels, gint nr, gint ng, gint nb) { guchar rt[16], gt[16], bt[16]; gint i; image_info->colorcube = g_new (guchar, 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++) { image_info->colorcube[i] = pixels[rt[i >> 8] + gt[(i >> 4) & 0x0f] + bt[i & 0x0f]]; #ifdef VERBOSE g_print ("%03x %02x %x %x %x\n", i, image-info->colorcube[i], rt[i >> 8], gt[(i >> 4) & 0x0f], bt[i & 0x0f]); #endif } } /* this is the colorcube suitable for dithering */ static void gdk_rgb_make_colorcube_d (GdkRgbInfo *image_info, gulong *pixels, gint nr, gint ng, gint nb) { gint r, g, b; gint i; image_info->colorcube_d = g_new (guchar, 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); image_info->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 gint gdk_rgb_try_colormap (GdkRgbInfo *image_info, gboolean force, gint nr, gint ng, gint nb) { gint r, g, b; gint ri, gi, bi; gint r0, g0, b0; GdkColormap *cmap; GdkColor color; gulong pixels[256]; gulong junk[256]; gint i; gint d2; gint colors_needed; gint idx; gint best[256]; if (!force && nr * ng * nb < gdk_rgb_min_colors) return FALSE; if (image_info->cmap) cmap = image_info->cmap; else cmap = gdk_colormap_get_system (); colors_needed = nr * ng * nb; for (i = 0; i < 256; i++) { best[i] = 192; pixels[i] = 256; } #ifndef GAMMA if (cmap == gdk_colormap_get_system()) /* find color cube colors that are already present */ for (i = 0; i < MIN (256, cmap->size); i++) { r = cmap->colors[i].red >> 8; g = cmap->colors[i].green >> 8; b = cmap->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) gdk_colors_free (cmap, pixels + idx, 1, 0); else colors_needed--; color = cmap->colors[i]; if (!gdk_colormap_alloc_color (cmap, &color, FALSE, FALSE)) return gdk_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 (!gdk_colors_alloc (cmap, 0, NULL, 0, junk, colors_needed)) { char tmp_str[80]; sprintf (tmp_str, "%d %d %d colormap failed (in gdk_colors_alloc)\n", nr, ng, nb); return gdk_rgb_cmap_fail (tmp_str, cmap, pixels); } gdk_colors_free (cmap, junk, 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 if (!gdk_colormap_alloc_color (cmap, &color, FALSE, force)) { char tmp_str[80]; sprintf (tmp_str, "%d %d %d colormap failed\n", nr, ng, nb); return gdk_rgb_cmap_fail (tmp_str, cmap, pixels); } pixels[i] = color.pixel; } #ifdef VERBOSE g_print ("%d: %lx\n", i, pixels[i]); #endif } image_info->nred_shades = nr; image_info->ngreen_shades = ng; image_info->nblue_shades = nb; gdk_rgb_make_colorcube (image_info, pixels, nr, ng, nb); gdk_rgb_make_colorcube_d (image_info, pixels, nr, ng, nb); return TRUE; } /* Return TRUE on success. */ static gboolean gdk_rgb_do_colormaps (GdkRgbInfo *image_info, gboolean force) { static const gint 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 gint n_sizes = sizeof(sizes) / (3 * sizeof(gint)); gint i; /* Try the possible sizes. If the force parameter is set to TRUE * and all larger sizes fail, force the larger size to succeed - * this will involve allowing closest matches when allocating the * colors */ for (i = 0; i < n_sizes; i++) if (gdk_rgb_try_colormap (image_info, (i == n_sizes - 1 ) && force, sizes[i][0], sizes[i][1], sizes[i][2])) return TRUE; return FALSE; } /* Make a 2 x 2 x 2 colorcube */ static void gdk_rgb_colorcube_222 (GdkRgbInfo *image_info) { int i; GdkColor color; image_info->colorcube_d = g_new (guchar, 512); for (i = 0; i < 8; i++) { color.red = ((i & 4) >> 2) * 65535; color.green = ((i & 2) >> 1) * 65535; color.blue = (i & 1) * 65535; gdk_colormap_alloc_color (image_info->cmap, &color, FALSE, TRUE); image_info->colorcube_d[((i & 4) << 4) | ((i & 2) << 2) | (i & 1)] = color.pixel; } } void gdk_rgb_set_verbose (gboolean verbose) { gdk_rgb_verbose = verbose; } void gdk_rgb_set_install (gboolean install) { gdk_rgb_install_cmap = install; } void gdk_rgb_set_min_colors (gint min_colors) { gdk_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 gdk_rgb_score_visual (GdkVisual *visual) { guint32 quality, speed, sys, pseudo; quality = 0; speed = 1; sys = 0; if (visual->type == GDK_VISUAL_TRUE_COLOR || visual->type == GDK_VISUAL_DIRECT_COLOR) { 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->type == GDK_VISUAL_PSEUDO_COLOR || visual->type == GDK_VISUAL_STATIC_COLOR) { if (visual->depth == 8) quality = 4; else if (visual->depth == 4) quality = 2; else if (visual->depth == 1) quality = 1; } else if (visual->type == GDK_VISUAL_STATIC_GRAY #ifdef ENABLE_GRAYSCALE || visual->type == GDK_VISUAL_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 == gdk_visual_get_system ()); pseudo = (visual->type == GDK_VISUAL_PSEUDO_COLOR || visual->type == GDK_VISUAL_TRUE_COLOR); if (gdk_rgb_verbose) g_print ("Visual type = %s, depth = %d, %x:%x:%x%s; score=%x\n", visual_names[visual->type], 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 GdkVisual * gdk_rgb_choose_visual (void) { GList *visuals, *tmp_list; guint32 score, best_score; GdkVisual *visual, *best_visual; visuals = gdk_list_visuals (); tmp_list = visuals; best_visual = tmp_list->data; best_score = gdk_rgb_score_visual (best_visual); tmp_list = tmp_list->next; while (tmp_list) { visual = tmp_list->data; score = gdk_rgb_score_visual (visual); if (score > best_score) { best_score = score; best_visual = visual; } tmp_list = tmp_list->next; } g_list_free (visuals); return best_visual; } static void gdk_rgb_select_conv (GdkRgbInfo *image_info, GdkImage *image); static void gdk_rgb_set_gray_cmap (GdkRgbInfo *image_info, GdkColormap *cmap) { gint i; GdkColor color; gint status; gulong pixels[256]; gint 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 = gdk_colormap_alloc_color (cmap, &color, FALSE, TRUE); pixels[i] = color.pixel; #ifdef VERBOSE g_print ("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. */ image_info->colorcube = g_new (guchar, 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; image_info->colorcube[i] = pixels[gray]; } } static gboolean gdk_rgb_allocate_images (GdkRgbInfo *image_info, gint n_images, gboolean shared) { gint i; for (i = 0; i < n_images; i++) { if (image_info->bitmap) /* Use malloc() instead of g_malloc since X will free() this mem */ image_info->static_image[i] = gdk_image_new_bitmap (image_info->visual, (gpointer) malloc (REGION_WIDTH * REGION_HEIGHT >> 3), REGION_WIDTH * (N_REGIONS / n_images), REGION_HEIGHT); else image_info->static_image[i] = gdk_image_new (shared ? GDK_IMAGE_SHARED : GDK_IMAGE_NORMAL, image_info->visual, REGION_WIDTH * (N_REGIONS / n_images), REGION_HEIGHT); if (!image_info->static_image[i]) { gint j; for (j = 0; j < i; j++) gdk_image_unref (image_info->static_image[i]); return FALSE; } } return TRUE; } static void gdk_rgb_free_info (GdkRgbInfo *image_info) { gint i; GSList *tmp_list; if (image_info->stage_buf) g_free (image_info->stage_buf); if (image_info->gray_cmap) gdk_rgb_cmap_free (image_info->gray_cmap); if (image_info->own_gc) gdk_gc_unref (image_info->own_gc); for (i = 0; i < image_info->n_images; i++) gdk_image_unref (image_info->static_image[i]); if (image_info->colorcube) g_free (image_info->colorcube); if (image_info->colorcube_d) g_free (image_info->colorcube_d); tmp_list = image_info->cmap_info_list; while (tmp_list) { GdkRgbCmapInfo *cmap_info = tmp_list->data; cmap_info->cmap->info_list = g_slist_remove (cmap_info->cmap->info_list, cmap_info); g_free (cmap_info); } g_slist_free (image_info->cmap_info_list); g_free (image_info); } /* Create a GdkRgbInfo for the given visual/colormap pair. If colormap * is NULL, it will be determined and stored in image_info->cmap. * In this case, image_info->cmap will have an extra refcount which * is owned by the caller. */ static GdkRgbInfo * gdk_rgb_create_info (GdkVisual *visual, GdkColormap *colormap) { GdkRgbInfo *image_info; gint i; image_info = g_new0 (GdkRgbInfo, 1); image_info->visual = visual; image_info->cmap = 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 = 1.0; image_info->stage_buf = NULL; image_info->own_gc = NULL; image_info->cmap = colormap; if ((image_info->visual->type == GDK_VISUAL_PSEUDO_COLOR || image_info->visual->type == GDK_VISUAL_STATIC_COLOR) && image_info->visual->depth < 8 && image_info->visual->depth >= 3) { if (!image_info->cmap) image_info->cmap = gdk_colormap_ref (gdk_colormap_get_system ()); gdk_rgb_colorcube_222 (image_info); } else if (image_info->visual->type == GDK_VISUAL_PSEUDO_COLOR) { if (!image_info->cmap && (gdk_rgb_install_cmap || image_info->visual != gdk_visual_get_system ())) { image_info->cmap = gdk_colormap_new (image_info->visual, FALSE); image_info->cmap_alloced = TRUE; } if (!gdk_rgb_do_colormaps (image_info, image_info->cmap != NULL)) { image_info->cmap = gdk_colormap_new (image_info->visual, FALSE); image_info->cmap_alloced = TRUE; gdk_rgb_do_colormaps (image_info, TRUE); } if (gdk_rgb_verbose) g_print ("color cube: %d x %d x %d\n", image_info->nred_shades, image_info->ngreen_shades, image_info->nblue_shades); if (!image_info->cmap) image_info->cmap = gdk_colormap_ref (gdk_colormap_get_system ()); } #ifdef ENABLE_GRAYSCALE else if (image_info->visual->type == GDK_VISUAL_GRAYSCALE) { if (!image_info->cmap) { image_info->cmap = gdk_colormap_new (image_info->visual, FALSE); image_info->cmap_alloced = TRUE; } gdk_rgb_set_gray_cmap (image_info, image_info->cmap); } #endif else { if (!image_info->cmap) { /* Always install colormap in direct color. */ if (image_info->visual->type != GDK_VISUAL_DIRECT_COLOR && image_info->visual == gdk_visual_get_system ()) image_info->cmap = gdk_colormap_ref (gdk_colormap_get_system ()); else { image_info->cmap = gdk_colormap_new (image_info->visual, FALSE); image_info->cmap_alloced = TRUE; } } } image_info->bitmap = (image_info->visual->depth == 1); /* Try to allocate as few possible shared images */ for (i=0; i < G_N_ELEMENTS (possible_n_images); i++) { if (gdk_rgb_allocate_images (image_info, possible_n_images[i], TRUE)) { image_info->n_images = possible_n_images[i]; break; } } /* If that fails, just allocate N_REGIONS normal images */ if (i == G_N_ELEMENTS (possible_n_images)) { gdk_rgb_allocate_images (image_info, N_REGIONS, FALSE); image_info->n_images = N_REGIONS; } image_info->bpp = image_info->static_image[0]->bpp; image_info->static_image_idx = 0; image_info->horiz_y = REGION_HEIGHT; image_info->vert_x = REGION_WIDTH; image_info->tile_x = REGION_WIDTH; image_info->tile_y1 = image_info->tile_y2 = REGION_HEIGHT; gdk_rgb_select_conv (image_info, image_info->static_image[0]); if (!gdk_rgb_quark) gdk_rgb_quark = g_quark_from_static_string (gdk_rgb_key); g_object_set_qdata_full (G_OBJECT (image_info->cmap), gdk_rgb_quark, image_info, (GDestroyNotify)gdk_rgb_free_info); return image_info; } void gdk_rgb_init (void) { static const gint byte_order[1] = { 1 }; /* check endian sanity */ #if G_BYTE_ORDER == G_BIG_ENDIAN if (((char *)byte_order)[0] == 1) g_error ("gdk_rgb_init: compiled for big endian, but this is a little endian machine.\n\n"); #else if (((char *)byte_order)[0] != 1) g_error ("gdk_rgb_init: compiled for little endian, but this is a big endian machine.\n\n"); #endif } static GdkRgbInfo * gdk_rgb_get_info_from_colormap (GdkColormap *cmap) { GdkRgbInfo *image_info; if (!gdk_rgb_quark) gdk_rgb_quark = g_quark_from_static_string (gdk_rgb_key); image_info = g_object_get_qdata (G_OBJECT (cmap), gdk_rgb_quark); if (!image_info) image_info = gdk_rgb_create_info (gdk_colormap_get_visual (cmap), cmap); return image_info; } static gulong gdk_rgb_xpixel_from_rgb_internal (GdkColormap *colormap, guint16 r, guint16 g, guint16 b) { gulong pixel = 0; GdkRgbInfo *image_info = gdk_rgb_get_info_from_colormap (colormap); if (image_info->bitmap) { return (r + (g << 1) + b) > 131070; } else if (image_info->visual->type == GDK_VISUAL_PSEUDO_COLOR) pixel = image_info->colorcube[((r & 0xf000) >> 4) | ((g & 0xf000) >> 8) | ((b & 0xf000) >> 12)]; else if (image_info->visual->depth < 8 && image_info->visual->type == GDK_VISUAL_STATIC_COLOR) { pixel = image_info->colorcube_d[((r & 0x8000) >> 9) | ((g & 0x8000) >> 12) | ((b & 0x8000) >> 15)]; } else if (image_info->visual->type == GDK_VISUAL_TRUE_COLOR || image_info->visual->type == GDK_VISUAL_DIRECT_COLOR) { #ifdef VERBOSE g_print ("shift, prec: r %d %d g %d %d b %d %d\n", image_info->visual->red_shift, image_info->visual->red_prec, image_info->visual->green_shift, image_info->visual->green_prec, image_info->visual->blue_shift, image_info->visual->blue_prec); #endif pixel = (((r >> (16 - image_info->visual->red_prec)) << image_info->visual->red_shift) + ((g >> (16 - image_info->visual->green_prec)) << image_info->visual->green_shift) + ((b >> (16 - image_info->visual->blue_prec)) << image_info->visual->blue_shift)); } else if (image_info->visual->type == GDK_VISUAL_STATIC_GRAY || image_info->visual->type == GDK_VISUAL_GRAYSCALE) { int gray = r + g * 2 + b; return gray >> (18 - image_info->visual->depth); } return pixel; } /* convert an rgb value into an X pixel code */ gulong gdk_rgb_xpixel_from_rgb (guint32 rgb) { guint32 r = rgb & 0xff0000; guint32 g = rgb & 0xff00; guint32 b = rgb & 0xff; return gdk_rgb_xpixel_from_rgb_internal (gdk_rgb_get_colormap(), (r >> 8) + (r >> 16), g + (g >> 8), b + (b << 8)); } void gdk_rgb_gc_set_foreground (GdkGC *gc, guint32 rgb) { GdkColor color; color.pixel = gdk_rgb_xpixel_from_rgb (rgb); gdk_gc_set_foreground (gc, &color); } void gdk_rgb_gc_set_background (GdkGC *gc, guint32 rgb) { GdkColor color; color.pixel = gdk_rgb_xpixel_from_rgb (rgb); gdk_gc_set_background (gc, &color); } /** * gdk_rgb_find_color: * @colormap: a #GdkColormap * @color: a #GdkColor * * @colormap should be the colormap for the graphics context and * drawable you're using to draw. If you're drawing to a #GtkWidget, * call gtk_widget_get_colormap(). * * @color should have its %red, %green, and %blue fields initialized; * gdk_rgb_find_color() will fill in the %pixel field with the best * matching pixel from a color cube. The color is then ready to be * used for drawing, e.g. you can call gdk_gc_set_foreground() which * expects %pixel to be initialized. * * In many cases, you can avoid this whole issue by calling * gdk_gc_set_rgb_fg_color() or gdk_gc_set_rgb_bg_color(), which * do not expect %pixel to be initialized in advance. If you use those * functions, there's no need for gdk_rgb_find_color(). * **/ void gdk_rgb_find_color (GdkColormap *colormap, GdkColor *color) { color->pixel = gdk_rgb_xpixel_from_rgb_internal (colormap, color->red, color->green, color->blue); } #if G_BYTE_ORDER == G_LITTLE_ENDIAN #define HAIRY_CONVERT_8 #endif #ifdef HAIRY_CONVERT_8 static void gdk_rgb_convert_8 (GdkRgbInfo *image_info, GdkImage *image, gint x0, gint y0, gint width, gint height, guchar *buf, int rowstride, gint x_align, gint y_align, GdkRgbCmap *cmap) { int x, y; gint bpl; guchar *obuf, *obptr; guchar *bptr, *bp2; gint r, g, b; guchar *colorcube = image_info->colorcube; bptr = buf; bpl = image->bpl; obuf = ((guchar *)image->mem) + y0 * bpl + x0; 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 gdk_rgb_convert_8 (GdkRgbInfo *image_info, GdkImage *image, gint x0, gint y0, gint width, gint height, guchar *buf, int rowstride, gint x_align, gint y_align, GdkRgbCmap *cmap) { int x, y; gint bpl; guchar *obuf, *obptr; guchar *bptr, *bp2; gint r, g, b; guchar *colorcube = image_info->colorcube; bptr = buf; bpl = image->bpl; obuf = ((guchar *)image->mem) + y0 * bpl + x0; 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 guchar 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 }, { 53, 36, 27, 9, 50, 12, 32, 55, 2, 57, 7, 17, 48, 34, 63, 15, 40, 26, 62, 11, 49, 6, 31, 39, 22, 42, 6, 63, 1, 39, 60, 4, 42, 61, 32, 45, 24, 44, 2, 60, 16, 41, 53, 1, 33, 61, 49, 17, 63, 23, 45, 26, 33, 3, 23, 46, 2, 50, 20, 4, 45, 34, 49, 30, 39, 58, 44, 31, 53, 34, 6, 52, 30, 47, 63, 1, 53, 22, 42, 31, 58, 23, 54, 22, 61, 8, 36, 59, 22, 35, 21, 1, 55, 40, 27, 16, 30, 54, 2, 29, 43, 16, 39, 63, 21, 46, 26, 10, 48, 32, 19, 53, 30, 56, 26, 60, 33, 4, 61, 23, 49, 59, 15, 53, 19, 58, 42, 16 }, { 20, 5, 59, 46, 25, 62, 7, 19, 43, 25, 37, 61, 11, 24, 4, 54, 12, 52, 3, 32, 17, 61, 12, 47, 15, 55, 18, 31, 53, 28, 9, 50, 21, 6, 55, 9, 58, 14, 54, 26, 33, 7, 31, 58, 13, 21, 8, 42, 29, 6, 37, 11, 48, 52, 14, 60, 11, 39, 56, 32, 14, 58, 7, 26, 17, 4, 42, 8, 11, 47, 19, 38, 10, 17, 26, 37, 9, 55, 28, 13, 18, 40, 6, 33, 1, 43, 25, 11, 51, 7, 62, 43, 18, 37, 3, 57, 45, 9, 38, 58, 5, 52, 27, 7, 17, 53, 5, 57, 37, 2, 63, 9, 22, 15, 11, 38, 25, 45, 35, 0, 28, 10, 41, 30, 50, 8, 31, 57 }, { 49, 33, 16, 38, 1, 42, 51, 34, 53, 14, 28, 49, 30, 56, 36, 23, 43, 20, 38, 56, 22, 45, 28, 0, 62, 35, 26, 44, 11, 19, 52, 35, 44, 15, 30, 38, 10, 31, 40, 4, 46, 50, 20, 40, 27, 44, 51, 14, 56, 53, 19, 59, 7, 29, 41, 19, 35, 25, 8, 52, 22, 44, 13, 53, 50, 32, 61, 24, 56, 25, 63, 0, 45, 57, 33, 59, 16, 46, 4, 62, 50, 11, 60, 37, 52, 19, 55, 29, 37, 46, 13, 26, 48, 10, 50, 34, 21, 63, 26, 13, 42, 33, 22, 55, 35, 28, 43, 15, 24, 51, 27, 34, 46, 49, 58, 3, 52, 9, 57, 19, 48, 55, 3, 35, 12, 45, 24, 3 }, { 41, 11, 56, 28, 18, 31, 22, 10, 37, 6, 47, 13, 3, 41, 9, 46, 0, 48, 29, 6, 34, 10, 55, 37, 20, 8, 49, 3, 41, 59, 14, 25, 0, 63, 19, 47, 27, 51, 17, 57, 23, 10, 61, 6, 54, 3, 38, 31, 0, 22, 34, 43, 20, 55, 31, 0, 49, 63, 29, 38, 3, 62, 28, 40, 0, 22, 14, 35, 2, 48, 15, 43, 23, 14, 3, 29, 49, 20, 39, 34, 0, 44, 29, 9, 15, 47, 5, 42, 0, 31, 58, 5, 31, 61, 23, 15, 0, 47, 19, 50, 24, 3, 59, 11, 44, 0, 31, 59, 6, 42, 17, 60, 0, 39, 20, 31, 43, 17, 29, 40, 12, 25, 60, 22, 52, 15, 63, 29 }, { 20, 52, 8, 44, 62, 4, 59, 49, 17, 63, 21, 39, 60, 18, 52, 27, 33, 59, 14, 51, 59, 43, 24, 5, 51, 30, 57, 17, 32, 5, 37, 56, 48, 34, 42, 3, 60, 5, 36, 13, 43, 37, 18, 34, 25, 12, 59, 24, 47, 36, 11, 50, 3, 38, 9, 58, 16, 5, 43, 18, 47, 10, 37, 18, 59, 46, 29, 52, 40, 12, 34, 28, 56, 36, 53, 7, 43, 8, 24, 52, 26, 17, 56, 43, 24, 32, 63, 20, 57, 16, 22, 52, 36, 8, 41, 56, 29, 32, 54, 7, 35, 57, 14, 48, 20, 62, 13, 39, 53, 29, 8, 45, 13, 29, 7, 61, 14, 54, 6, 63, 38, 32, 18, 43, 2, 39, 6, 47 }, { 0, 58, 23, 35, 13, 46, 12, 39, 0, 31, 55, 24, 5, 35, 15, 61, 17, 5, 39, 25, 18, 2, 50, 33, 41, 13, 39, 23, 62, 46, 29, 12, 22, 8, 56, 25, 20, 49, 32, 62, 0, 56, 11, 46, 63, 42, 9, 16, 55, 5, 60, 15, 62, 26, 45, 21, 36, 51, 13, 57, 31, 24, 55, 6, 35, 9, 57, 5, 20, 60, 7, 51, 5, 19, 40, 25, 61, 32, 56, 12, 36, 48, 21, 2, 58, 12, 39, 28, 9, 50, 40, 12, 44, 18, 25, 49, 6, 38, 11, 62, 18, 46, 30, 9, 40, 25, 49, 19, 10, 36, 55, 22, 33, 52, 41, 18, 37, 27, 49, 21, 2, 46, 7, 53, 33, 61, 27, 35 }, { 41, 31, 5, 39, 51, 26, 33, 57, 27, 41, 9, 44, 54, 29, 48, 7, 44, 36, 57, 10, 31, 63, 16, 45, 11, 60, 1, 47, 7, 20, 43, 3, 58, 36, 13, 52, 39, 7, 15, 28, 22, 48, 30, 21, 1, 29, 49, 44, 27, 17, 40, 30, 24, 42, 12, 53, 33, 7, 47, 20, 1, 42, 11, 49, 25, 43, 17, 32, 45, 27, 41, 21, 31, 62, 11, 49, 2, 15, 42, 5, 63, 7, 41, 27, 49, 6, 54, 23, 46, 34, 2, 28, 54, 3, 59, 12, 46, 17, 42, 28, 40, 1, 37, 51, 5, 55, 2, 34, 47, 16, 3, 62, 47, 5, 23, 56, 1, 44, 12, 34, 51, 16, 57, 11, 25, 17, 54, 13 }, { 60, 26, 55, 18, 3, 60, 20, 6, 52, 15, 50, 19, 32, 11, 23, 53, 26, 21, 1, 47, 42, 27, 8, 58, 21, 27, 53, 36, 26, 54, 31, 50, 17, 30, 45, 1, 29, 59, 44, 53, 41, 4, 35, 58, 51, 19, 32, 4, 52, 34, 48, 8, 51, 5, 56, 2, 25, 61, 27, 38, 54, 27, 62, 21, 51, 1, 39, 62, 10, 50, 1, 58, 13, 47, 38, 18, 35, 54, 22, 51, 30, 19, 59, 34, 14, 32, 44, 4, 60, 15, 52, 62, 20, 43, 30, 35, 21, 60, 4, 52, 12, 24, 61, 18, 30, 42, 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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 guchar 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 gdk_rgb_preprocess_dm_565 (void) { int i; guint32 dith; if (DM_565 == NULL) { DM_565 = g_new (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 g_print ("%i %x %x\n", i, dith, DM_565[i]); #endif } } } static void gdk_rgb_convert_8_d666 (GdkRgbInfo *image_info, GdkImage *image, gint x0, gint y0, gint width, gint height, guchar *buf, int rowstride, gint x_align, gint y_align, GdkRgbCmap *cmap) { int x, y; gint bpl; guchar *obuf, *obptr; guchar *bptr, *bp2; gint r, g, b; const guchar *dmp; gint dith; guchar *colorcube_d = image_info->colorcube_d; bptr = buf; bpl = image->bpl; obuf = ((guchar *)image->mem) + y0 * bpl + x0; 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 gdk_rgb_convert_8_d (GdkRgbInfo *image_info, GdkImage *image, gint x0, gint y0, gint width, gint height, guchar *buf, int rowstride, gint x_align, gint y_align, GdkRgbCmap *cmap) { int x, y; gint bpl; guchar *obuf, *obptr; guchar *bptr, *bp2; gint r, g, b; const guchar *dmp; gint dith; gint rs, gs, bs; guchar *colorcube_d = image_info->colorcube_d; bptr = buf; bpl = image->bpl; rs = image_info->nred_shades - 1; gs = image_info->ngreen_shades - 1; bs = image_info->nblue_shades - 1; obuf = ((guchar *)image->mem) + y0 * bpl + x0; 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 gdk_rgb_convert_8_indexed (GdkRgbInfo *image_info, GdkImage *image, gint x0, gint y0, gint width, gint height, guchar *buf, int rowstride, gint x_align, gint y_align, GdkRgbCmap *cmap) { int x, y; gint bpl; guchar *obuf, *obptr; guchar *bptr, *bp2; guchar c; guchar *lut; GdkRgbCmapInfo *cmap_info = gdk_rgb_cmap_get_info (cmap, image_info); lut = cmap_info->lut; bptr = buf; bpl = image->bpl; obuf = ((guchar *)image->mem) + y0 * bpl + x0; 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 gdk_rgb_convert_gray8 (GdkRgbInfo *image_info, GdkImage *image, gint x0, gint y0, gint width, gint height, guchar *buf, int rowstride, gint x_align, gint y_align, GdkRgbCmap *cmap) { int x, y; gint bpl; guchar *obuf, *obptr; guchar *bptr, *bp2; gint r, g, b; bptr = buf; bpl = image->bpl; obuf = ((guchar *)image->mem) + y0 * bpl + x0; 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 gdk_rgb_convert_gray8_gray (GdkRgbInfo *image_info, GdkImage *image, gint x0, gint y0, gint width, gint height, guchar *buf, int rowstride, gint x_align, gint y_align, GdkRgbCmap *cmap) { int y; gint bpl; guchar *obuf; guchar *bptr; bptr = buf; bpl = image->bpl; obuf = ((guchar *)image->mem) + y0 * bpl + x0; for (y = 0; y < height; y++) { memcpy (obuf, bptr, 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 gdk_rgb_convert_565 (GdkRgbInfo *image_info, GdkImage *image, gint x0, gint y0, gint width, gint height, guchar *buf, int rowstride, gint x_align, gint y_align, GdkRgbCmap *cmap) { int x, y; guchar *obuf, *obptr; gint bpl; guchar *bptr, *bp2; guchar r, g, b; bptr = buf; bpl = image->bpl; obuf = ((guchar *)image->mem) + y0 * bpl + x0 * 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 gdk_rgb_convert_565 (GdkRgbInfo *image_info, GdkImage *image, gint x0, gint y0, gint width, gint height, guchar *buf, int rowstride, gint x_align, gint y_align, GdkRgbCmap *cmap) { int x, y; guchar *obuf; gint bpl; guchar *bptr, *bp2; guchar r, g, b; bptr = buf; bpl = image->bpl; obuf = ((guchar *)image->mem) + y0 * bpl + x0 * 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 gdk_rgb_convert_565_gray (GdkRgbInfo *image_info, GdkImage *image, gint x0, gint y0, gint width, gint height, guchar *buf, int rowstride, gint x_align, gint y_align, GdkRgbCmap *cmap) { int x, y; guchar *obuf, *obptr; gint bpl; guchar *bptr, *bp2; guchar g; bptr = buf; bpl = image->bpl; obuf = ((guchar *)image->mem) + y0 * bpl + x0 * 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 gdk_rgb_convert_565_gray (GdkRgbInfo *image_info, GdkImage *image, gint x0, gint y0, gint width, gint height, guchar *buf, int rowstride, gint x_align, gint y_align, GdkRgbCmap *cmap) { int x, y; guchar *obuf; gint bpl; guchar *bptr, *bp2; guchar g; bptr = buf; bpl = image->bpl; obuf = ((guchar *)image->mem) + y0 * bpl + x0 * 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 gdk_rgb_convert_565_br (GdkRgbInfo *image_info, GdkImage *image, gint x0, gint y0, gint width, gint height, guchar *buf, int rowstride, gint x_align, gint y_align, GdkRgbCmap *cmap) { int x, y; guchar *obuf; gint bpl; guchar *bptr, *bp2; guchar r, g, b; bptr = buf; bpl = image->bpl; obuf = ((guchar *)image->mem) + y0 * bpl + x0 * 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 gdk_rgb_convert_565_d (GdkRgbInfo *image_info, GdkImage *image, gint x0, gint y0, gint width, gint height, guchar *buf, int rowstride, gint x_align, gint y_align, GdkRgbCmap *cmap) { /* Now this is what I'd call some highly tuned code! */ int x, y; guchar *obuf, *obptr; gint bpl; guchar *bptr, *bp2; width += x_align; height += y_align; bptr = buf; bpl = image->bpl; obuf = ((guchar *)image->mem) + y0 * bpl + x0 * 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 gdk_rgb_convert_565_d (GdkRgbInfo *image_info, GdkImage *image, gint x0, gint y0, gint width, gint height, guchar *buf, int rowstride, gint x_align, gint y_align, GdkRgbCmap *cmap) { int x, y; guchar *obuf; gint bpl; guchar *bptr; width += x_align; height += y_align; bptr = buf; bpl = image->bpl; obuf = ((guchar *)image->mem) + y0 * bpl + (x0 - x_align) * 2; for (y = y_align; y < height; y++) { guint32 *dmp = DM_565 + ((y & (DM_HEIGHT - 1)) << DM_WIDTH_SHIFT); guchar *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 gdk_rgb_convert_555 (GdkRgbInfo *image_info, GdkImage *image, gint x0, gint y0, gint width, gint height, guchar *buf, int rowstride, gint x_align, gint y_align, GdkRgbCmap *cmap) { int x, y; guchar *obuf; gint bpl; guchar *bptr, *bp2; guchar r, g, b; bptr = buf; bpl = image->bpl; obuf = ((guchar *)image->mem) + y0 * bpl + x0 * 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 gdk_rgb_convert_555_br (GdkRgbInfo *image_info, GdkImage *image, gint x0, gint y0, gint width, gint height, guchar *buf, int rowstride, gint x_align, gint y_align, GdkRgbCmap *cmap) { int x, y; guchar *obuf; gint bpl; guchar *bptr, *bp2; guchar r, g, b; bptr = buf; bpl = image->bpl; obuf = ((guchar *)image->mem) + y0 * bpl + x0 * 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 & 0x38) << 10) | ((b & 0xf8) << 5); } bptr += rowstride; obuf += bpl; } } static void gdk_rgb_convert_888_msb (GdkRgbInfo *image_info, GdkImage *image, gint x0, gint y0, gint width, gint height, guchar *buf, int rowstride, gint x_align, gint y_align, GdkRgbCmap *cmap) { int y; guchar *obuf; gint bpl; guchar *bptr; bptr = buf; bpl = image->bpl; obuf = ((guchar *)image->mem) + y0 * bpl + x0 * 3; for (y = 0; y < height; y++) { memcpy (obuf, bptr, 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 gdk_rgb_convert_888_lsb (GdkRgbInfo *image_info, GdkImage *image, gint x0, gint y0, gint width, gint height, guchar *buf, int rowstride, gint x_align, gint y_align, GdkRgbCmap *cmap) { int x, y; guchar *obuf, *obptr; gint bpl; guchar *bptr, *bp2; int r, g, b; bptr = buf; bpl = image->bpl; obuf = ((guchar *)image->mem) + y0 * bpl + x0 * 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 gdk_rgb_convert_888_lsb (GdkRgbInfo *image_info, GdkImage *image, gint x0, gint y0, gint width, gint height, guchar *buf, int rowstride, gint x_align, gint y_align, GdkRgbCmap *cmap) { int x, y; guchar *obuf; gint bpl; guchar *bptr, *bp2; int r, g, b; bptr = buf; bpl = image->bpl; obuf = ((guchar *)image->mem) + y0 * bpl + x0 * 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 gdk_rgb_convert_0888 (GdkRgbInfo *image_info, GdkImage *image, gint x0, gint y0, gint width, gint height, guchar *buf, int rowstride, gint x_align, gint y_align, GdkRgbCmap *cmap) { int x, y; guchar *obuf; gint bpl; guchar *bptr, *bp2; int r, g, b; bptr = buf; bpl = image->bpl; obuf = ((guchar *)image->mem) + y0 * bpl + x0 * 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 gdk_rgb_convert_0888_br (GdkRgbInfo *image_info, GdkImage *image, gint x0, gint y0, gint width, gint height, guchar *buf, int rowstride, gint x_align, gint y_align, GdkRgbCmap *cmap) { int x, y; guchar *obuf; gint bpl; guchar *bptr, *bp2; int r, g, b; bptr = buf; bpl = image->bpl; obuf = ((guchar *)image->mem) + y0 * bpl + x0 * 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 gdk_rgb_convert_8880_br (GdkRgbInfo *image_info, GdkImage *image, gint x0, gint y0, gint width, gint height, guchar *buf, int rowstride, gint x_align, gint y_align, GdkRgbCmap *cmap) { int x, y; guchar *obuf; gint bpl; guchar *bptr, *bp2; int r, g, b; bptr = buf; bpl = image->bpl; obuf = ((guchar *)image->mem) + y0 * bpl + x0 * 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 gdk_rgb_convert_truecolor_lsb (GdkRgbInfo *image_info, GdkImage *image, gint x0, gint y0, gint width, gint height, guchar *buf, int rowstride, gint x_align, gint y_align, GdkRgbCmap *cmap) { int x, y; guchar *obuf, *obptr; gint bpl; guchar *bptr, *bp2; gint r, g, b; gint r_right, r_left; gint g_right, g_left; gint b_right, b_left; gint bpp; guint32 pixel; gint i; r_right = 8 - image_info->visual->red_prec; r_left = image_info->visual->red_shift; g_right = 8 - image_info->visual->green_prec; g_left = image_info->visual->green_shift; b_right = 8 - image_info->visual->blue_prec; b_left = image_info->visual->blue_shift; bpp = image_info->bpp; bptr = buf; bpl = image->bpl; obuf = ((guchar *)image->mem) + y0 * bpl + x0 * 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 gdk_rgb_convert_truecolor_lsb_d (GdkRgbInfo *image_info, GdkImage *image, gint x0, gint y0, gint width, gint height, guchar *buf, int rowstride, gint x_align, gint y_align, GdkRgbCmap *cmap) { int x, y; guchar *obuf, *obptr; gint bpl; guchar *bptr, *bp2; gint r, g, b; gint r_right, r_left, r_prec; gint g_right, g_left, g_prec; gint b_right, b_left, b_prec; gint bpp; guint32 pixel; gint i; gint dith; gint r1, g1, b1; const guchar *dmp; r_right = 8 - image_info->visual->red_prec; r_left = image_info->visual->red_shift; r_prec = image_info->visual->red_prec; g_right = 8 - image_info->visual->green_prec; g_left = image_info->visual->green_shift; g_prec = image_info->visual->green_prec; b_right = 8 - image_info->visual->blue_prec; b_left = image_info->visual->blue_shift; b_prec = image_info->visual->blue_prec; bpp = image_info->bpp; bptr = buf; bpl = image->bpl; obuf = ((guchar *)image->mem) + y0 * bpl + x0 * 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 gdk_rgb_convert_truecolor_msb (GdkRgbInfo *image_info, GdkImage *image, gint x0, gint y0, gint width, gint height, guchar *buf, int rowstride, gint x_align, gint y_align, GdkRgbCmap *cmap) { int x, y; guchar *obuf, *obptr; gint bpl; guchar *bptr, *bp2; gint r, g, b; gint r_right, r_left; gint g_right, g_left; gint b_right, b_left; gint bpp; guint32 pixel; gint shift, shift_init; r_right = 8 - image_info->visual->red_prec; r_left = image_info->visual->red_shift; g_right = 8 - image_info->visual->green_prec; g_left = image_info->visual->green_shift; b_right = 8 - image_info->visual->blue_prec; b_left = image_info->visual->blue_shift; bpp = image_info->bpp; bptr = buf; bpl = image->bpl; obuf = ((guchar *)image->mem) + y0 * bpl + x0 * 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 gdk_rgb_convert_truecolor_msb_d (GdkRgbInfo *image_info, GdkImage *image, gint x0, gint y0, gint width, gint height, guchar *buf, int rowstride, gint x_align, gint y_align, GdkRgbCmap *cmap) { int x, y; guchar *obuf, *obptr; gint bpl; guchar *bptr, *bp2; gint r, g, b; gint r_right, r_left, r_prec; gint g_right, g_left, g_prec; gint b_right, b_left, b_prec; gint bpp; guint32 pixel; gint shift, shift_init; gint dith; gint r1, g1, b1; const guchar *dmp; r_right = 8 - image_info->visual->red_prec; r_left = image_info->visual->red_shift; r_prec = image_info->visual->red_prec; g_right = 8 - image_info->visual->green_prec; g_left = image_info->visual->green_shift; g_prec = image_info->visual->green_prec; b_right = 8 - image_info->visual->blue_prec; b_left = image_info->visual->blue_shift; b_prec = image_info->visual->blue_prec; bpp = image_info->bpp; bptr = buf; bpl = image->bpl; obuf = ((guchar *)image->mem) + y0 * bpl + x0 * 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 gdk_rgb_convert_4 (GdkRgbInfo *image_info, GdkImage *image, gint x0, gint y0, gint width, gint height, guchar *buf, int rowstride, gint x_align, gint y_align, GdkRgbCmap *cmap) { int x, y; gint bpl; guchar *obuf, *obptr; guchar *bptr, *bp2; gint r, g, b; const guchar *dmp; gint dith; guchar *colorcube_d = image_info->colorcube_d; bptr = buf; bpl = image->bpl; obuf = ((guchar *)image->mem) + y0 * bpl + x0; 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 gdk_rgb_convert_gray4 (GdkRgbInfo *image_info, GdkImage *image, gint x0, gint y0, gint width, gint height, guchar *buf, int rowstride, gint x_align, gint y_align, GdkRgbCmap *cmap) { int x, y; gint bpl; guchar *obuf, *obptr; guchar *bptr, *bp2; gint r, g, b; gint shift; bptr = buf; bpl = image->bpl; obuf = ((guchar *)image->mem) + y0 * bpl + x0; shift = 9 - image_info->visual->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 gdk_rgb_convert_gray4_pack (GdkRgbInfo *image_info, GdkImage *image, gint x0, gint y0, gint width, gint height, guchar *buf, int rowstride, gint x_align, gint y_align, GdkRgbCmap *cmap) { int x, y; gint bpl; guchar *obuf, *obptr; guchar *bptr, *bp2; gint r, g, b; gint shift; guchar pix0, pix1; /* todo: this is hardcoded to big-endian. Make endian-agile. */ bptr = buf; bpl = image->bpl; obuf = ((guchar *)image->mem) + y0 * bpl + (x0 >> 1); shift = 9 - image_info->visual->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 gdk_rgb_convert_gray4_d (GdkRgbInfo *image_info, GdkImage *image, gint x0, gint y0, gint width, gint height, guchar *buf, int rowstride, gint x_align, gint y_align, GdkRgbCmap *cmap) { int x, y; gint bpl; guchar *obuf, *obptr; guchar *bptr, *bp2; gint r, g, b; const guchar *dmp; gint prec, right; gint gray; bptr = buf; bpl = image->bpl; obuf = ((guchar *)image->mem) + y0 * bpl + x0; prec = image_info->visual->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 gdk_rgb_convert_gray4_d_pack (GdkRgbInfo *image_info, GdkImage *image, gint x0, gint y0, gint width, gint height, guchar *buf, int rowstride, gint x_align, gint y_align, GdkRgbCmap *cmap) { int x, y; gint bpl; guchar *obuf, *obptr; guchar *bptr, *bp2; gint r, g, b; const guchar *dmp; gint prec, right; gint gray; guchar pix0, pix1; /* todo: this is hardcoded to big-endian. Make endian-agile. */ bptr = buf; bpl = image->bpl; obuf = ((guchar *)image->mem) + y0 * bpl + (x0 >> 1); prec = image_info->visual->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 gdk_rgb_convert_1 (GdkRgbInfo *image_info, GdkImage *image, gint x0, gint y0, gint width, gint height, guchar *buf, int rowstride, gint x_align, gint y_align, GdkRgbCmap *cmap) { int x, y; gint bpl; guchar *obuf, *obptr; guchar *bptr, *bp2; gint r, g, b; const guchar *dmp; gint dith; guchar byte; bptr = buf; bpl = image->bpl; obuf = ((guchar *)image->mem) + y0 * bpl + (x0 >> 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 guchar * gdk_rgb_ensure_stage (GdkRgbInfo *image_info) { if (image_info->stage_buf == NULL) image_info->stage_buf = g_malloc (REGION_HEIGHT * STAGE_ROWSTRIDE); return image_info->stage_buf; } /* This is slow. Speed me up, please. */ static void gdk_rgb_32_to_stage (GdkRgbInfo *image_info, guchar *buf, gint rowstride, gint width, gint height) { gint x, y; guchar *pi_start, *po_start; guchar *pi, *po; pi_start = buf; po_start = gdk_rgb_ensure_stage (image_info); 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 gdk_rgb_convert_32_generic (GdkRgbInfo *image_info, GdkImage *image, gint x0, gint y0, gint width, gint height, guchar *buf, gint rowstride, gint x_align, gint y_align, GdkRgbCmap *cmap) { gdk_rgb_32_to_stage (image_info, buf, rowstride, width, height); (*image_info->conv) (image_info, image, x0, y0, 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 gdk_rgb_convert_32_generic_d (GdkRgbInfo *image_info, GdkImage *image, gint x0, gint y0, gint width, gint height, guchar *buf, gint rowstride, gint x_align, gint y_align, GdkRgbCmap *cmap) { gdk_rgb_32_to_stage (image_info, buf, rowstride, width, height); (*image_info->conv_d) (image_info, image, x0, y0, width, height, image_info->stage_buf, STAGE_ROWSTRIDE, x_align, y_align, cmap); } /* This is slow. Speed me up, please. */ static void gdk_rgb_gray_to_stage (GdkRgbInfo *image_info, guchar *buf, gint rowstride, gint width, gint height) { gint x, y; guchar *pi_start, *po_start; guchar *pi, *po; guchar gray; pi_start = buf; po_start = gdk_rgb_ensure_stage (image_info); 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 gdk_rgb_convert_gray_generic (GdkRgbInfo *image_info, GdkImage *image, gint x0, gint y0, gint width, gint height, guchar *buf, gint rowstride, gint x_align, gint y_align, GdkRgbCmap *cmap) { gdk_rgb_gray_to_stage (image_info, buf, rowstride, width, height); (*image_info->conv) (image_info, image, x0, y0, width, height, image_info->stage_buf, STAGE_ROWSTRIDE, x_align, y_align, cmap); } static void gdk_rgb_convert_gray_generic_d (GdkRgbInfo *image_info, GdkImage *image, gint x0, gint y0, gint width, gint height, guchar *buf, gint rowstride, gint x_align, gint y_align, GdkRgbCmap *cmap) { gdk_rgb_gray_to_stage (image_info, buf, rowstride, width, height); (*image_info->conv_d) (image_info, image, x0, y0, width, height, image_info->stage_buf, STAGE_ROWSTRIDE, x_align, y_align, cmap); } /* Render grayscale using indexed method. */ static void gdk_rgb_convert_gray_cmap (GdkRgbInfo *image_info, GdkImage *image, gint x0, gint y0, gint width, gint height, guchar *buf, gint rowstride, gint x_align, gint y_align, GdkRgbCmap *cmap) { (*image_info->conv_indexed) (image_info, image, x0, y0, width, height, buf, rowstride, x_align, y_align, image_info->gray_cmap); } #if 0 static void gdk_rgb_convert_gray_cmap_d (GdkRgbInfo *image_info, GdkImage *image, gint x0, gint y0, gint width, gint height, guchar *buf, gint rowstride, gint x_align, gint y_align, GdkRgbCmap *cmap) { (*image_info->conv_indexed_d) (image_info, image, x0, y0, width, height, buf, rowstride, x_align, y_align, image_info->gray_cmap); } #endif /* This is slow. Speed me up, please. */ static void gdk_rgb_indexed_to_stage (GdkRgbInfo *image_info, guchar *buf, gint rowstride, gint width, gint height, GdkRgbCmap *cmap) { gint x, y; guchar *pi_start, *po_start; guchar *pi, *po; gint rgb; pi_start = buf; po_start = gdk_rgb_ensure_stage (image_info); 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 gdk_rgb_convert_indexed_generic (GdkRgbInfo *image_info, GdkImage *image, gint x0, gint y0, gint width, gint height, guchar *buf, gint rowstride, gint x_align, gint y_align, GdkRgbCmap *cmap) { gdk_rgb_indexed_to_stage (image_info, buf, rowstride, width, height, cmap); (*image_info->conv) (image_info, image, x0, y0, width, height, image_info->stage_buf, STAGE_ROWSTRIDE, x_align, y_align, cmap); } static void gdk_rgb_convert_indexed_generic_d (GdkRgbInfo *image_info, GdkImage *image, gint x0, gint y0, gint width, gint height, guchar *buf, gint rowstride, gint x_align, gint y_align, GdkRgbCmap *cmap) { gdk_rgb_indexed_to_stage (image_info, buf, rowstride, width, height, cmap); (*image_info->conv_d) (image_info, image, x0, y0, 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 gdk_rgb_select_conv (GdkRgbInfo *image_info, GdkImage *image) { GdkByteOrder byte_order; gint depth, bpp, byterev; GdkVisualType vtype; guint32 red_mask, green_mask, blue_mask; GdkRgbConvFunc conv, conv_d; GdkRgbConvFunc conv_32, conv_32_d; GdkRgbConvFunc conv_gray, conv_gray_d; GdkRgbConvFunc conv_indexed, conv_indexed_d; gboolean mask_rgb, mask_bgr; depth = image_info->visual->depth; bpp = image->bits_per_pixel; byte_order = image->byte_order; if (gdk_rgb_verbose) g_print ("Chose visual type=%s depth=%d, image bpp=%d, %s first\n", visual_names[image_info->visual->type], image_info->visual->depth, bpp, byte_order == GDK_LSB_FIRST ? "lsb" : "msb"); #if G_BYTE_ORDER == G_BIG_ENDIAN byterev = (byte_order == GDK_LSB_FIRST); #else byterev = (byte_order == GDK_MSB_FIRST); #endif vtype = image_info->visual->type; if (vtype == GDK_VISUAL_DIRECT_COLOR) vtype = GDK_VISUAL_TRUE_COLOR; red_mask = image_info->visual->red_mask; green_mask = image_info->visual->green_mask; blue_mask = image_info->visual->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 = gdk_rgb_convert_32_generic; conv_32_d = gdk_rgb_convert_32_generic_d; conv_gray = gdk_rgb_convert_gray_generic; conv_gray_d = gdk_rgb_convert_gray_generic_d; conv_indexed = gdk_rgb_convert_indexed_generic; conv_indexed_d = gdk_rgb_convert_indexed_generic_d; image_info->dith_default = FALSE; if (image_info->bitmap) conv = gdk_rgb_convert_1; else if (bpp == 16 && depth == 16 && !byterev && red_mask == 0xf800 && green_mask == 0x7e0 && blue_mask == 0x1f) { conv = gdk_rgb_convert_565; conv_d = gdk_rgb_convert_565_d; conv_gray = gdk_rgb_convert_565_gray; gdk_rgb_preprocess_dm_565 (); } else if (bpp == 16 && depth == 16 && vtype == GDK_VISUAL_TRUE_COLOR && byterev && red_mask == 0xf800 && green_mask == 0x7e0 && blue_mask == 0x1f) conv = gdk_rgb_convert_565_br; else if (bpp == 16 && depth == 15 && vtype == GDK_VISUAL_TRUE_COLOR && !byterev && red_mask == 0x7c00 && green_mask == 0x3e0 && blue_mask == 0x1f) conv = gdk_rgb_convert_555; else if (bpp == 16 && depth == 15 && vtype == GDK_VISUAL_TRUE_COLOR && byterev && red_mask == 0x7c00 && green_mask == 0x3e0 && blue_mask == 0x1f) conv = gdk_rgb_convert_555_br; /* I'm not 100% sure about the 24bpp tests - but testing will show*/ else if (bpp == 24 && depth == 24 && vtype == GDK_VISUAL_TRUE_COLOR && ((mask_rgb && byte_order == GDK_LSB_FIRST) || (mask_bgr && byte_order == GDK_MSB_FIRST))) conv = gdk_rgb_convert_888_lsb; else if (bpp == 24 && depth == 24 && vtype == GDK_VISUAL_TRUE_COLOR && ((mask_rgb && byte_order == GDK_MSB_FIRST) || (mask_bgr && byte_order == GDK_LSB_FIRST))) conv = gdk_rgb_convert_888_msb; #if G_BYTE_ORDER == G_BIG_ENDIAN else if (bpp == 32 && depth == 24 && vtype == GDK_VISUAL_TRUE_COLOR && (mask_rgb && byte_order == GDK_LSB_FIRST)) conv = gdk_rgb_convert_0888_br; else if (bpp == 32 && depth == 24 && vtype == GDK_VISUAL_TRUE_COLOR && (mask_rgb && byte_order == GDK_MSB_FIRST)) conv = gdk_rgb_convert_0888; else if (bpp == 32 && depth == 24 && vtype == GDK_VISUAL_TRUE_COLOR && (mask_bgr && byte_order == GDK_MSB_FIRST)) conv = gdk_rgb_convert_8880_br; #else else if (bpp == 32 && depth == 24 && vtype == GDK_VISUAL_TRUE_COLOR && (mask_rgb && byte_order == GDK_MSB_FIRST)) conv = gdk_rgb_convert_0888_br; else if (bpp == 32 && depth == 24 && vtype == GDK_VISUAL_TRUE_COLOR && (mask_rgb && byte_order == GDK_LSB_FIRST)) conv = gdk_rgb_convert_0888; else if (bpp == 32 && depth == 24 && vtype == GDK_VISUAL_TRUE_COLOR && (mask_bgr && byte_order == GDK_LSB_FIRST)) conv = gdk_rgb_convert_8880_br; #endif else if (vtype == GDK_VISUAL_TRUE_COLOR && byte_order == GDK_LSB_FIRST) { conv = gdk_rgb_convert_truecolor_lsb; conv_d = gdk_rgb_convert_truecolor_lsb_d; } else if (vtype == GDK_VISUAL_TRUE_COLOR && byte_order == GDK_MSB_FIRST) { conv = gdk_rgb_convert_truecolor_msb; conv_d = gdk_rgb_convert_truecolor_msb_d; } else if (bpp == 8 && depth == 8 && (vtype == GDK_VISUAL_PSEUDO_COLOR #ifdef ENABLE_GRAYSCALE || vtype == GDK_VISUAL_GRAYSCALE #endif )) { image_info->dith_default = TRUE; conv = gdk_rgb_convert_8; if (vtype != GDK_VISUAL_GRAYSCALE) { if (image_info->nred_shades == 6 && image_info->ngreen_shades == 6 && image_info->nblue_shades == 6) conv_d = gdk_rgb_convert_8_d666; else conv_d = gdk_rgb_convert_8_d; } conv_indexed = gdk_rgb_convert_8_indexed; conv_gray = gdk_rgb_convert_gray_cmap; } else if (bpp == 8 && depth == 8 && (vtype == GDK_VISUAL_STATIC_GRAY #ifdef not_ENABLE_GRAYSCALE || vtype == GDK_VISUAL_GRAYSCALE #endif )) { conv = gdk_rgb_convert_gray8; conv_gray = gdk_rgb_convert_gray8_gray; } else if (bpp == 8 && depth < 8 && depth >= 2 && (vtype == GDK_VISUAL_STATIC_GRAY || vtype == GDK_VISUAL_GRAYSCALE)) { conv = gdk_rgb_convert_gray4; conv_d = gdk_rgb_convert_gray4_d; } else if (bpp == 8 && depth < 8 && depth >= 3) { conv = gdk_rgb_convert_4; } else if (bpp == 4 && depth <= 4 && depth >= 2 && (vtype == GDK_VISUAL_STATIC_GRAY || vtype == GDK_VISUAL_GRAYSCALE)) { conv = gdk_rgb_convert_gray4_pack; conv_d = gdk_rgb_convert_gray4_d_pack; } if (!conv) { g_warning ("Visual type=%s depth=%d, image bpp=%d, %s first\n" "is not supported by GdkRGB. Please submit a bug report\n" "with the above values to bugzilla.gnome.org", visual_names[vtype], depth, bpp, byte_order == GDK_LSB_FIRST ? "lsb" : "msb"); exit (1); } 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; } #ifdef VERBOSE static gint sincelast; #endif /* Defining NO_FLUSH can cause inconsistent screen updates, but is useful for performance evaluation. */ #undef NO_FLUSH static gint gdk_rgb_alloc_scratch_image (GdkRgbInfo *image_info) { if (image_info->static_image_idx == N_REGIONS) { #ifndef NO_FLUSH gdk_flush (); #endif #ifdef VERBOSE g_print ("flush, %d puts since last flush\n", sincelast); sincelast = 0; #endif image_info->static_image_idx = 0; /* Mark all regions that we might be filling in as completely * full, to force new tiles to be allocated for subsequent * images */ image_info->horiz_y = REGION_HEIGHT; image_info->vert_x = REGION_WIDTH; image_info->tile_x = REGION_WIDTH; image_info->tile_y1 = image_info->tile_y2 = REGION_HEIGHT; } return image_info->static_image_idx++; } static GdkImage * gdk_rgb_alloc_scratch (GdkRgbInfo *image_info, gint width, gint height, gint *x0, gint *y0) { GdkImage *image; gint idx; if (width >= (REGION_WIDTH >> 1)) { if (height >= (REGION_HEIGHT >> 1)) { idx = gdk_rgb_alloc_scratch_image (image_info); *x0 = 0; *y0 = 0; } else { if (height + image_info->horiz_y > REGION_HEIGHT) { image_info->horiz_idx = gdk_rgb_alloc_scratch_image (image_info); image_info->horiz_y = 0; } idx = image_info->horiz_idx; *x0 = 0; *y0 = image_info->horiz_y; image_info->horiz_y += height; } } else { if (height >= (REGION_HEIGHT >> 1)) { if (width + image_info->vert_x > REGION_WIDTH) { image_info->vert_idx = gdk_rgb_alloc_scratch_image (image_info); image_info->vert_x = 0; } idx = image_info->vert_idx; *x0 = image_info->vert_x; *y0 = 0; /* using 3 and -4 would be slightly more efficient on 32-bit machines with > 1bpp displays */ image_info->vert_x += (width + 7) & -8; } else { if (width + image_info->tile_x > REGION_WIDTH) { image_info->tile_y1 = image_info->tile_y2; image_info->tile_x = 0; } if (height + image_info->tile_y1 > REGION_HEIGHT) { image_info->tile_idx = gdk_rgb_alloc_scratch_image (image_info); image_info->tile_x = 0; image_info->tile_y1 = 0; image_info->tile_y2 = 0; } if (height + image_info->tile_y1 > image_info->tile_y2) image_info->tile_y2 = height + image_info->tile_y1; idx = image_info->tile_idx; *x0 = image_info->tile_x; *y0 = image_info->tile_y1; image_info->tile_x += (width + 7) & -8; } } image = image_info->static_image[idx * image_info->n_images / N_REGIONS]; *x0 += REGION_WIDTH * (idx % (N_REGIONS / image_info->n_images)); #ifdef VERBOSE g_print ("index %d, x %d, y %d (%d x %d)\n", idx, *x0, *y0, width, height); sincelast++; #endif return image; } static void gdk_draw_rgb_image_core (GdkRgbInfo *image_info, GdkDrawable *drawable, GdkGC *gc, gint x, gint y, gint width, gint height, guchar *buf, gint pixstride, gint rowstride, GdkRgbConvFunc conv, GdkRgbCmap *cmap, gint xdith, gint ydith) { gint y0, x0; gint xs0, ys0; GdkImage *image; gint width1, height1; guchar *buf_ptr; if (image_info->bitmap) { if (image_info->own_gc == NULL) { GdkColor color; image_info->own_gc = gdk_gc_new (drawable); gdk_color_white (image_info->cmap, &color); gdk_gc_set_foreground (image_info->own_gc, &color); gdk_color_black (image_info->cmap, &color); gdk_gc_set_background (image_info->own_gc, &color); } gc = image_info->own_gc; } for (y0 = 0; y0 < height; y0 += REGION_HEIGHT) { height1 = MIN (height - y0, REGION_HEIGHT); for (x0 = 0; x0 < width; x0 += REGION_WIDTH) { width1 = MIN (width - x0, REGION_WIDTH); buf_ptr = buf + y0 * rowstride + x0 * pixstride; image = gdk_rgb_alloc_scratch (image_info, width1, height1, &xs0, &ys0); conv (image_info, image, xs0, ys0, width1, height1, buf_ptr, rowstride, x + x0 + xdith, y + y0 + ydith, cmap); #ifndef DONT_ACTUALLY_DRAW gdk_draw_image (drawable, gc, image, xs0, ys0, x + x0, y + y0, width1, height1); #endif } } } static GdkRgbInfo * gdk_rgb_get_info_from_drawable (GdkDrawable *drawable) { GdkColormap *cmap = gdk_drawable_get_colormap (drawable); if (!cmap) { /* This guessing is required to maintain backward compatibility, * but would otherwise be a bad thing */ gint depth = gdk_drawable_get_depth (drawable); GdkColormap *rgb_cmap = gdk_rgb_get_colormap(); if (depth == gdk_colormap_get_visual (rgb_cmap)->depth) cmap = rgb_cmap; else { g_warning ("The gdk_draw_*_image require the drawable argument to\n" "have a specified colormap. All windows have a colormap,\n" "however, pixmaps only have colormap by default if they\n" "were created with a non-NULL window argument. Otherwise\n" "a colormap must be set on them with gdk_drawable_set_colormap"); return NULL; } } return gdk_rgb_get_info_from_colormap (cmap); } void gdk_draw_rgb_image (GdkDrawable *drawable, GdkGC *gc, gint x, gint y, gint width, gint height, GdkRgbDither dith, guchar *rgb_buf, gint rowstride) { GdkRgbInfo *image_info = gdk_rgb_get_info_from_drawable (drawable); if (!image_info) return; if (dith == GDK_RGB_DITHER_NONE || (dith == GDK_RGB_DITHER_NORMAL && !image_info->dith_default)) gdk_draw_rgb_image_core (image_info, drawable, gc, x, y, width, height, rgb_buf, 3, rowstride, image_info->conv, NULL, 0, 0); else gdk_draw_rgb_image_core (image_info, drawable, gc, x, y, width, height, rgb_buf, 3, rowstride, image_info->conv_d, NULL, 0, 0); } void gdk_draw_rgb_image_dithalign (GdkDrawable *drawable, GdkGC *gc, gint x, gint y, gint width, gint height, GdkRgbDither dith, guchar *rgb_buf, gint rowstride, gint xdith, gint ydith) { GdkRgbInfo *image_info = gdk_rgb_get_info_from_drawable (drawable); if (!image_info) return; if (dith == GDK_RGB_DITHER_NONE || (dith == GDK_RGB_DITHER_NORMAL && !image_info->dith_default)) gdk_draw_rgb_image_core (image_info, drawable, gc, x, y, width, height, rgb_buf, 3, rowstride, image_info->conv, NULL, xdith, ydith); else gdk_draw_rgb_image_core (image_info, drawable, gc, x, y, width, height, rgb_buf, 3, rowstride, image_info->conv_d, NULL, xdith, ydith); } void gdk_draw_rgb_32_image (GdkDrawable *drawable, GdkGC *gc, gint x, gint y, gint width, gint height, GdkRgbDither dith, guchar *buf, gint rowstride) { GdkRgbInfo *image_info = gdk_rgb_get_info_from_drawable (drawable); if (!image_info) return; if (dith == GDK_RGB_DITHER_NONE || (dith == GDK_RGB_DITHER_NORMAL && !image_info->dith_default)) gdk_draw_rgb_image_core (image_info, drawable, gc, x, y, width, height, buf, 4, rowstride, image_info->conv_32, NULL, 0, 0); else gdk_draw_rgb_image_core (image_info, drawable, gc, x, y, width, height, buf, 4, rowstride, image_info->conv_32_d, NULL, 0, 0); } void gdk_draw_rgb_32_image_dithalign (GdkDrawable *drawable, GdkGC *gc, gint x, gint y, gint width, gint height, GdkRgbDither dith, guchar *buf, gint rowstride, gint xdith, gint ydith) { GdkRgbInfo *image_info = gdk_rgb_get_info_from_drawable (drawable); if (!image_info) return; if (dith == GDK_RGB_DITHER_NONE || (dith == GDK_RGB_DITHER_NORMAL && !image_info->dith_default)) gdk_draw_rgb_image_core (image_info, drawable, gc, x, y, width, height, buf, 4, rowstride, image_info->conv_32, NULL, xdith, ydith); else gdk_draw_rgb_image_core (image_info, drawable, gc, x, y, width, height, buf, 4, rowstride, image_info->conv_32_d, NULL, xdith, ydith); } static void gdk_rgb_make_gray_cmap (GdkRgbInfo *info) { guint32 rgb[256]; gint i; for (i = 0; i < 256; i++) rgb[i] = (i << 16) | (i << 8) | i; info->gray_cmap = gdk_rgb_cmap_new (rgb, 256); } void gdk_draw_gray_image (GdkDrawable *drawable, GdkGC *gc, gint x, gint y, gint width, gint height, GdkRgbDither dith, guchar *buf, gint rowstride) { GdkRgbInfo *image_info = gdk_rgb_get_info_from_drawable (drawable); if (!image_info) return; if (image_info->bpp == 1 && image_info->gray_cmap == NULL && (image_info->visual->type == GDK_VISUAL_PSEUDO_COLOR || image_info->visual->type == GDK_VISUAL_GRAYSCALE)) gdk_rgb_make_gray_cmap (image_info); if (dith == GDK_RGB_DITHER_NONE || (dith == GDK_RGB_DITHER_NORMAL && !image_info->dith_default)) gdk_draw_rgb_image_core (image_info, drawable, gc, x, y, width, height, buf, 1, rowstride, image_info->conv_gray, NULL, 0, 0); else gdk_draw_rgb_image_core (image_info, drawable, gc, x, y, width, height, buf, 1, rowstride, image_info->conv_gray_d, NULL, 0, 0); } guchar lut[256]; /* for 8-bit modes */ static GdkRgbCmapInfo * gdk_rgb_cmap_get_info (GdkRgbCmap *cmap, GdkRgbInfo *image_info) { GSList *tmp_list; GdkRgbCmapInfo *cmap_info; int i, j; guint32 rgb; /* We only need a LUT for pseudo-color and grayscale cmaps */ if (image_info->bpp != 1 || !(image_info->visual->type == GDK_VISUAL_PSEUDO_COLOR || image_info->visual->type == GDK_VISUAL_GRAYSCALE)) return NULL; tmp_list = cmap->info_list; while (tmp_list) { cmap_info = tmp_list->data; if (cmap_info->image_info == image_info) return cmap_info; } cmap_info = g_new (GdkRgbCmapInfo, 1); cmap_info->image_info = image_info; cmap_info->cmap = cmap; for (i = 0; i < cmap->n_colors; i++) { rgb = cmap->colors[i]; j = ((rgb & 0xf00000) >> 12) | ((rgb & 0xf000) >> 8) | ((rgb & 0xf0) >> 4); #ifdef VERBOSE g_print ("%d %x %x %d\n", i, j, image_info->colorcube[j]); #endif cmap_info->lut[i] = image_info->colorcube[j]; } cmap->info_list = g_slist_prepend (cmap->info_list, cmap_info); image_info->cmap_info_list = g_slist_prepend (image_info->cmap_info_list, cmap_info); return cmap_info; } GdkRgbCmap * gdk_rgb_cmap_new (guint32 *colors, gint n_colors) { GdkRgbCmap *cmap; g_return_val_if_fail (n_colors >= 0, NULL); g_return_val_if_fail (n_colors <= 256, NULL); cmap = g_new (GdkRgbCmap, 1); cmap->n_colors = n_colors; memcpy (cmap->colors, colors, n_colors * sizeof(guint32)); cmap->info_list = NULL; return cmap; } void gdk_rgb_cmap_free (GdkRgbCmap *cmap) { GSList *tmp_list; tmp_list = cmap->info_list; while (tmp_list) { GdkRgbCmapInfo *cmap_info = tmp_list->data; cmap_info->image_info->cmap_info_list = g_slist_remove (cmap_info->image_info->cmap_info_list, cmap_info); g_free (cmap_info); } g_slist_free (cmap->info_list); g_free (cmap); } void gdk_draw_indexed_image (GdkDrawable *drawable, GdkGC *gc, gint x, gint y, gint width, gint height, GdkRgbDither dith, guchar *buf, gint rowstride, GdkRgbCmap *cmap) { GdkRgbInfo *image_info = gdk_rgb_get_info_from_drawable (drawable); if (!image_info) return; if (dith == GDK_RGB_DITHER_NONE || (dith == GDK_RGB_DITHER_NORMAL && !image_info->dith_default)) gdk_draw_rgb_image_core (image_info, drawable, gc, x, y, width, height, buf, 1, rowstride, image_info->conv_indexed, cmap, 0, 0); else gdk_draw_rgb_image_core (image_info, drawable, gc, x, y, width, height, buf, 1, rowstride, image_info->conv_indexed_d, cmap, 0, 0); } gboolean gdk_rgb_colormap_ditherable (GdkColormap *cmap) { GdkRgbInfo *image_info = gdk_rgb_get_info_from_colormap (cmap); return (image_info->conv != image_info->conv_d); } gboolean gdk_rgb_ditherable (void) { return gdk_rgb_colormap_ditherable (gdk_rgb_get_colormap ()); } /** * gdk_rgb_get_colormap: * * Returns the preferred colormap for rendering image data. Not a * very useful function; historically, GDK could only render RGB image * data to one colormap and visual, but in the current version it can * render to any colormap and visual. So there's no need to call this * function. * * Return value: the preferred colormap **/ GdkColormap * gdk_rgb_get_colormap (void) { static GdkColormap *cmap = NULL; if (!cmap) { GdkRgbInfo *image_info = gdk_rgb_create_info (gdk_rgb_choose_visual (), NULL); cmap = image_info->cmap; } return cmap; } GdkVisual * gdk_rgb_get_visual (void) { return gdk_colormap_get_visual (gdk_rgb_get_colormap ()); }