forked from AuroraMiddleware/gtk
14237d13e2
1999-11-22 Jonathan Blandford <jrb@redhat.com> * configure.in (GDK_PIXBUF_DIR): make the symlink. Does not work for srcdir != buildir != . Beats me why; I can't figure it out. AC_OUTPUT_COMMANDS doesn't seem to let me substitute it correctly.
916 lines
20 KiB
C
916 lines
20 KiB
C
/*
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* Creates an GdkPixbuf from a Drawable
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*
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* Authors:
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* Cody Russell <bratsche@dfw.net>
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* Michael Zucchi <zucchi@zedzone.mmc.com.au>
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*
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* This is licensed software, see the file COPYING for
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* details.
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*/
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#include <config.h>
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#include <stdio.h>
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#include <string.h>
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#include <glib.h>
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#include <gmodule.h>
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#include "gdk-pixbuf/gdk-pixbuf.h"
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#include "gdk-pixbuf/gdk-pixbuf-drawable.h"
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#if (G_BYTE_ORDER == G_LITTLE_ENDIAN)
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#define LITTLE
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#endif
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#define d(x)
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static unsigned long mask_table[] = {
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0x00000000, 0x00000001, 0x00000003, 0x00000007,
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0x0000000f, 0x0000001f, 0x0000003f, 0x0000007f,
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0x000000ff, 0x000001ff, 0x000003ff, 0x000007ff,
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0x00000fff, 0x00001fff, 0x00003fff, 0x00007fff,
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0x0000ffff, 0x0001ffff, 0x0003ffff, 0x0007ffff,
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0x000fffff, 0x001fffff, 0x003fffff, 0x007fffff,
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0x00ffffff, 0x01ffffff, 0x03ffffff, 0x07ffffff,
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0x0fffffff, 0x1fffffff, 0x3fffffff, 0x7fffffff,
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0xffffffff
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};
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/*
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convert 1 bits-pixel data
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no alpha
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*/
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static void rgb1(GdkImage *image, art_u8 *pixels, int rowstride)
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{
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int xx, yy;
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int width, height;
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int bpl;
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unsigned char *s;
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register unsigned char data;
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unsigned char *o;
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unsigned char *srow = image->mem, *orow = pixels;
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GdkColormap *colormap;
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d (printf ("1 bits/pixel\n"));
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/* convert upto 8 pixels/time */
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/* its probably not worth trying to make this run very fast, who uses
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1 bit displays anymore? */
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width = image->width;
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height = image->height;
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bpl = image->bpl;
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colormap = gdk_rgb_get_cmap ();
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for (yy = 0; yy < height; yy++) {
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s = srow;
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o = orow;
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for (xx = 0; xx < width; xx ++) {
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data = srow[xx>>3] >> (7 - (xx & 7)) & 1;
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*o++ = colormap->colors[data].red;
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*o++ = colormap->colors[data].green;
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*o++ = colormap->colors[data].blue;
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}
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srow += bpl;
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orow += rowstride;
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}
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}
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/*
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convert 1 bits/pixel data
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with alpha
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*/
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static void rgb1a(GdkImage *image, art_u8 *pixels, int rowstride)
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{
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int xx, yy;
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int width, height;
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int bpl;
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unsigned char *s;
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register unsigned char data;
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unsigned char *o;
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unsigned char *srow = image->mem, *orow = pixels;
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unsigned long remap[2];
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GdkColormap *colormap;
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d (printf ("1 bits/pixel\n"));
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/* convert upto 8 pixels/time */
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/* its probably not worth trying to make this run very fast, who uses
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1 bit displays anymore? */
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width = image->width;
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height = image->height;
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bpl = image->bpl;
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colormap = gdk_rgb_get_cmap ();
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for (xx=0;xx<2;xx++) {
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#ifdef LITTLE
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remap[xx] = 0xff000000
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| colormap->colors[xx].blue<<16
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| colormap->colors[xx].green<<8
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| colormap->colors[xx].red;
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#else
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remap[xx] = 0xff
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| colormap->colors[xx].red<<24
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| colormap->colors[xx].green<<16
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| colormap->colors[xx].red<<8;
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#endif
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}
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for (yy = 0; yy < height; yy++) {
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s = srow;
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o = orow;
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for (xx = 0; xx < width; xx ++) {
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data = srow[xx>>3] >> (7 - (xx & 7)) & 1;
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*o++ = remap[data];
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}
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srow += bpl;
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orow += rowstride;
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}
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}
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/*
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convert 8 bits/pixel data
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no alpha
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*/
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static void rgb8(GdkImage *image, art_u8 *pixels, int rowstride)
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{
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int xx, yy;
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int width, height;
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int bpl;
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unsigned long mask;
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register unsigned long data;
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unsigned char *srow = image->mem, *orow = pixels;
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register unsigned char *s;
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register unsigned char *o;
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GdkColormap *colormap;
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width = image->width;
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height = image->height;
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bpl = image->bpl;
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d(printf("8 bit, no alpha output\n"));
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colormap = gdk_rgb_get_cmap ();
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mask = mask_table[image->depth];
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for (yy = 0;yy < height; yy++) {
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s = srow;
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o = orow;
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for (xx = 0; xx < width; xx++) {
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data = *s++ & mask;
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*o++ = colormap->colors[data].red;
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*o++ = colormap->colors[data].green;
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*o++ = colormap->colors[data].blue;
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}
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srow += bpl;
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orow += rowstride;
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}
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}
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/*
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convert 8 bits/pixel data
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with alpha
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*/
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static void rgb8a(GdkImage *image, art_u8 *pixels, int rowstride)
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{
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int xx, yy;
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int width, height;
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int bpl;
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unsigned long mask;
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register unsigned long data;
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GdkColormap *colormap;
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unsigned long remap[256];
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register unsigned char *s; /* read 2 pixels at once */
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register unsigned long *o;
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unsigned char *srow = image->mem, *orow = pixels;
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width = image->width;
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height = image->height;
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bpl = image->bpl;
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d(printf("8 bit, with alpha output\n"));
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colormap = gdk_rgb_get_cmap ();
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mask = mask_table[image->depth];
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for (xx=0;xx<colormap->size;xx++) {
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#ifdef LITTLE
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remap[xx] = 0xff000000
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| colormap->colors[xx].blue<<16
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| colormap->colors[xx].green<<8
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| colormap->colors[xx].red;
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#else
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remap[xx] = 0xff
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| colormap->colors[xx].red<<24
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| colormap->colors[xx].green<<16
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| colormap->colors[xx].red<<8;
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#endif
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}
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for (yy = 0;yy < height; yy++) {
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s = srow;
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o = (unsigned long *)orow;
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for (xx = 0; xx < width; xx ++) {
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data = *s++ & mask;
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*o++ = remap[data];
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}
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srow += bpl;
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orow += rowstride;
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}
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}
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/*
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convert 16 bits/pixel data
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no alpha
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data in lsb format
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*/
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static void rgb565lsb(GdkImage *image, art_u8 *pixels, int rowstride)
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{
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int xx, yy;
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int width, height;
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int bpl;
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#ifdef LITTLE
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register unsigned long *s; /* read 2 pixels at once */
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#else
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register unsigned char *s; /* read 2 pixels at once */
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#endif
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register unsigned short *o;
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unsigned char *srow = image->mem, *orow = pixels;
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width = image->width;
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height = image->height;
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bpl = image->bpl;
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for (yy = 0;yy < height; yy++) {
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#ifdef LITTLE
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s = (unsigned long *)srow;
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#else
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s = (unsigned char *)srow;
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#endif
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o = (unsigned short *)orow;
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for (xx = 1; xx < width; xx += 2) {
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register unsigned long data;
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#ifdef LITTLE
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data = *s++;
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*o++ = (data & 0xf800) >> 8 | (data & 0x7e0) << 5;
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*o++ = (data & 0x1f) << 3 | (data & 0xf8000000) >> 16;
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*o++ = ((data & 0x7e00000) >> 19) | (data & 0x1f0000) >> 5;
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#else
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/* swap endianness first */
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data = s[0] | s[1]<<8 | s[2]<<16 | s[3]<<24;
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s+=4;
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*o++ = (data & 0xf800) | (data & 0x7e0) >> 3;
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*o++ = (data & 0x1f) << 11 | (data & 0xf8000000) >> 24;
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*o++ = ((data & 0x7e00000) >> 11) | (data & 0x1f0000) >> 13;
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#endif
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}
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/* check for last remaining pixel */
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if (width & 1) {
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register unsigned short data;
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#ifdef LITTLE
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data = *((short *) s);
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#else
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data = *((short *) s);
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data = ((data >> 8) & 0xff) | ((data & 0xff) << 8);
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#endif
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((char *) o)[0] = (data >> 8) & 0xf8;
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((char *) o)[1] = (data >> 3) & 0xfc;
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((char *) o)[2] = (data << 3) & 0xf8;
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}
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srow += bpl;
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orow += rowstride;
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}
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}
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/*
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convert 16 bits/pixel data
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no alpha
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data in msb format
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*/
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static void rgb565msb(GdkImage *image, art_u8 *pixels, int rowstride)
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{
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int xx, yy;
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int width, height;
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int bpl;
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#ifdef LITTLE
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register unsigned char *s; /* need to swap data order */
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#else
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register unsigned long *s; /* read 2 pixels at once */
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#endif
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register unsigned short *o;
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unsigned char *srow = image->mem, *orow = pixels;
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width = image->width;
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height = image->height;
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bpl = image->bpl;
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for (yy = 0;yy < height; yy++) {
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#ifdef LITTLE
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s = srow;
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#else
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s = (unsigned long *)srow;
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#endif
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o = (unsigned short *)orow;
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for (xx = 1; xx < width; xx += 2) {
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register unsigned long data;
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#ifdef LITTLE
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/* swap endianness first */
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data = s[0] | s[1]<<8 | s[2]<<16 | s[3]<<24;
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s+=4;
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*o++ = (data & 0xf800) >> 8 | (data & 0x7e0) << 5;
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*o++ = (data & 0x1f) << 3 | (data & 0xf8000000) >> 16;
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*o++ = ((data & 0x7e00000) >> 19) | (data & 0x1f0000) >> 5;
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#else
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data = *s++;
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*o++ = (data & 0xf800) | (data & 0x7e0) >> 3;
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*o++ = (data & 0x1f) << 11 | (data & 0xf8000000) >> 24;
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*o++ = ((data & 0x7e00000) >> 11) | (data & 0x1f0000) >> 13;
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#endif
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}
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/* check for last remaining pixel */
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if (width & 1) {
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register unsigned short data;
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#ifdef LITTLE
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data = *((short *) s);
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data = ((data >> 8) & 0xff) | ((data & 0xff) << 8);
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#else
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data = *((short *) s);
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#endif
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((char *) o)[0] = (data >> 8) & 0xf8;
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((char *) o)[1] = (data >> 3) & 0xfc;
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((char *) o)[2] = (data << 3) & 0xf8;
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}
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srow += bpl;
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orow += rowstride;
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}
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}
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/*
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convert 16 bits/pixel data
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with alpha
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data in lsb format
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*/
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static void rgb565alsb(GdkImage *image, art_u8 *pixels, int rowstride)
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{
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int xx, yy;
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int width, height;
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int bpl;
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#ifdef LITTLE
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register unsigned short *s; /* read 1 pixels at once */
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#else
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register unsigned char *s;
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#endif
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register unsigned long *o;
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unsigned char *srow = image->mem, *orow = pixels;
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width = image->width;
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height = image->height;
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bpl = image->bpl;
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for (yy = 0;yy < height; yy++) {
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#ifdef LITTLE
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s = (unsigned short *)srow;
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#else
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s = (unsigned char *)srow;
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#endif
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o = (unsigned long *)orow;
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for (xx = 0; xx < width; xx ++) {
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register unsigned long data;
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/* rrrrrggg gggbbbbb -> rrrrr000 gggggg00 bbbbb000 aaaaaaaa */
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/* little endian: aaaaaaaa bbbbb000 gggggg00 rrrrr000 */
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#ifdef LITTLE
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data = *s++;
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*o++ = (data & 0xf800) >>8 | (data & 0x7e0) << 5
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| (data & 0x1f) << 19 | 0xff000000;
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#else
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/* swap endianness first */
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data = s[0] | s[1]<<8;
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s+=2;
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*o++ = (data & 0xf800) << 16 | (data & 0x7e0) << 13
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| (data & 0x1f) << 11 | 0xff;
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#endif
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}
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srow += bpl;
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orow += rowstride;
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}
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}
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/*
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convert 16 bits/pixel data
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with alpha
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data in msb format
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*/
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static void rgb565amsb(GdkImage *image, art_u8 *pixels, int rowstride)
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{
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int xx, yy;
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int width, height;
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int bpl;
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#ifdef LITTLE
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register unsigned char *s;
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#else
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register unsigned short *s; /* read 1 pixels at once */
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#endif
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register unsigned long *o;
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unsigned char *srow = image->mem, *orow = pixels;
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width = image->width;
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height = image->height;
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bpl = image->bpl;
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for (yy = 0;yy < height; yy++) {
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s = srow;
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o = (unsigned long *)orow;
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for (xx = 0; xx < width; xx ++) {
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register unsigned long data;
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/* rrrrrggg gggbbbbb -> rrrrr000 gggggg00 bbbbb000 aaaaaaaa */
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/* little endian: aaaaaaaa bbbbb000 gggggg00 rrrrr000 */
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#ifdef LITTLE
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/* swap endianness first */
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data = s[0] | s[1]<<8;
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s+=2;
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*o++ = (data & 0xf800) >>8 | (data & 0x7e0) << 5
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| (data & 0x1f) << 19 | 0xff000000;
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#else
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data = *s++;
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*o++ = (data & 0xf800) << 16 | (data & 0x7e0) << 13
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| (data & 0x1f) << 11 | 0xff;
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#endif
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}
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srow += bpl;
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orow += rowstride;
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}
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|
}
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|
|
|
/*
|
|
convert 15 bits/pixel data
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|
no alpha
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|
data in lsb format
|
|
*/
|
|
static void rgb555lsb(GdkImage *image, art_u8 *pixels, int rowstride)
|
|
{
|
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int xx, yy;
|
|
int width, height;
|
|
int bpl;
|
|
|
|
#ifdef LITTLE
|
|
register unsigned long *s; /* read 2 pixels at once */
|
|
#else
|
|
register unsigned char *s; /* read 2 pixels at once */
|
|
#endif
|
|
register unsigned short *o;
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unsigned char *srow = image->mem, *orow = pixels;
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|
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width = image->width;
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height = image->height;
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bpl = image->bpl;
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|
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for (yy = 0;yy < height; yy++) {
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#ifdef LITTLE
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s = (unsigned long *)srow;
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#else
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s = srow;
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#endif
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o = (unsigned short *)orow;
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for (xx = 1; xx < width; xx += 2) {
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register unsigned long data;
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#ifdef LITTLE
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data = *s++;
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*o++ = (data & 0x7c00) >> 7 | (data & 0x3e0) << 6;
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*o++ = (data & 0x1f) << 3 | (data & 0x7c000000) >> 15;
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*o++ = ((data & 0x3e00000) >> 18) | (data & 0x1f0000) >> 5;
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#else
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/* swap endianness first */
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data = s[0] | s[1]<<8 | s[2]<<16 | s[3]<<24;
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s+=4;
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*o++ = (data & 0x7c00) << 1 | (data & 0x3e0) >> 2;
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*o++ = (data & 0x1f) << 11 | (data & 0x7c000000) >> 23;
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*o++ = ((data & 0x3e00000) >> 10) | (data & 0x1f0000) >> 13;
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#endif
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}
|
|
/* check for last remaining pixel */
|
|
if (width & 1) {
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register unsigned short data;
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#ifdef LITTLE
|
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data = *((short *) s);
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#else
|
|
data = *((short *) s);
|
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data = ((data >> 8) & 0xff) | ((data & 0xff) << 8);
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#endif
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((char *) o)[0] = (data & 0x7c0) >> 7;
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((char *) o)[1] = (data & 0x3e0) >> 2;
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((char *) o)[2] = (data & 0x1f) << 3;
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}
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srow += bpl;
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orow += rowstride;
|
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}
|
|
}
|
|
|
|
/*
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|
convert 15 bits/pixel data
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|
no alpha
|
|
data in msb format
|
|
*/
|
|
static void rgb555msb(GdkImage *image, art_u8 *pixels, int rowstride)
|
|
{
|
|
int xx, yy;
|
|
int width, height;
|
|
int bpl;
|
|
|
|
#ifdef LITTLE
|
|
register unsigned char *s; /* read 2 pixels at once */
|
|
#else
|
|
register unsigned long *s; /* read 2 pixels at once */
|
|
#endif
|
|
register unsigned short *o;
|
|
unsigned char *srow = image->mem, *orow = pixels;
|
|
|
|
width = image->width;
|
|
height = image->height;
|
|
bpl = image->bpl;
|
|
|
|
for (yy = 0;yy < height; yy++) {
|
|
s = srow;
|
|
o = (unsigned short *)orow;
|
|
for (xx = 1; xx < width; xx += 2) {
|
|
register unsigned long data;
|
|
#ifdef LITTLE
|
|
/* swap endianness first */
|
|
data = s[0] | s[1]<<8 | s[2]<<16 | s[3]<<24;
|
|
s+=4;
|
|
*o++ = (data & 0x7c00) >> 7 | (data & 0x3e0) << 6;
|
|
*o++ = (data & 0x1f) << 3 | (data & 0x7c000000) >> 15;
|
|
*o++ = ((data & 0x3e00000) >> 18) | (data & 0x1f0000) >> 5;
|
|
#else
|
|
data = *s++;
|
|
*o++ = (data & 0x7c00) << 1 | (data & 0x3e0) >> 2;
|
|
*o++ = (data & 0x1f) << 11 | (data & 0x7c000000) >> 23;
|
|
*o++ = ((data & 0x3e00000) >> 10) | (data & 0x1f0000) >> 13;
|
|
#endif
|
|
}
|
|
/* check for last remaining pixel */
|
|
if (width & 1) {
|
|
register unsigned short data;
|
|
#ifdef LITTLE
|
|
data = *((short *) s);
|
|
data = ((data >> 8) & 0xff) | ((data & 0xff) << 8);
|
|
#else
|
|
data = *((short *) s);
|
|
#endif
|
|
((char *) o)[0] = (data & 0x7c0) >> 7;
|
|
((char *) o)[1] = (data & 0x3e0) >> 2;
|
|
((char *) o)[2] = (data & 0x1f) << 3;
|
|
}
|
|
srow += bpl;
|
|
orow += rowstride;
|
|
}
|
|
}
|
|
|
|
/*
|
|
convert 15 bits/pixel data
|
|
with alpha
|
|
data in lsb format
|
|
*/
|
|
static void rgb555alsb(GdkImage *image, art_u8 *pixels, int rowstride)
|
|
{
|
|
int xx, yy;
|
|
int width, height;
|
|
int bpl;
|
|
|
|
#ifdef LITTLE
|
|
register unsigned short *s; /* read 1 pixels at once */
|
|
#else
|
|
register unsigned char *s;
|
|
#endif
|
|
register unsigned long *o;
|
|
|
|
unsigned char *srow = image->mem, *orow = pixels;
|
|
|
|
width = image->width;
|
|
height = image->height;
|
|
bpl = image->bpl;
|
|
|
|
for (yy = 0;yy < height; yy++) {
|
|
#ifdef LITTLE
|
|
s = (unsigned short *)srow;
|
|
#else
|
|
s = srow;
|
|
#endif
|
|
o = (unsigned long *)orow;
|
|
for (xx = 0; xx < width; xx++) {
|
|
register unsigned long data;
|
|
/* rrrrrggg gggbbbbb -> rrrrr000 gggggg00 bbbbb000 aaaaaaaa */
|
|
/* little endian: aaaaaaaa bbbbb000 gggggg00 rrrrr000 */
|
|
#ifdef LITTLE
|
|
data = *s++;
|
|
*o++ = (data & 0x7c00) >>7 | (data & 0x3e0) << 6
|
|
| (data & 0x1f) << 19 | 0xff000000;
|
|
#else
|
|
/* swap endianness first */
|
|
data = s[0] | s[1]<<8;
|
|
s+=2;
|
|
*o++ = (data & 0x7c00) << 17 | (data & 0x3e0) << 14
|
|
| (data & 0x1f) << 11 | 0xff;
|
|
#endif
|
|
}
|
|
srow += bpl;
|
|
orow += rowstride;
|
|
}
|
|
}
|
|
|
|
/*
|
|
convert 15 bits/pixel data
|
|
with alpha
|
|
data in msb format
|
|
*/
|
|
static void rgb555amsb(GdkImage *image, art_u8 *pixels, int rowstride)
|
|
{
|
|
int xx, yy;
|
|
int width, height;
|
|
int bpl;
|
|
|
|
#ifdef LITTLE
|
|
register unsigned short *s; /* read 1 pixels at once */
|
|
#else
|
|
register unsigned char *s;
|
|
#endif
|
|
register unsigned long *o;
|
|
|
|
unsigned char *srow = image->mem, *orow = pixels;
|
|
|
|
width = image->width;
|
|
height = image->height;
|
|
bpl = image->bpl;
|
|
|
|
for (yy = 0;yy < height; yy++) {
|
|
#ifdef LITTLE
|
|
s = (unsigned short *)srow;
|
|
#else
|
|
s = srow;
|
|
#endif
|
|
o = (unsigned long *)orow;
|
|
for (xx = 0; xx < width; xx++) {
|
|
register unsigned long data;
|
|
/* rrrrrggg gggbbbbb -> rrrrr000 gggggg00 bbbbb000 aaaaaaaa */
|
|
/* little endian: aaaaaaaa bbbbb000 gggggg00 rrrrr000 */
|
|
#ifdef LITTLE
|
|
/* swap endianness first */
|
|
data = s[0] | s[1]<<8;
|
|
s+=2;
|
|
*o++ = (data & 0x7c00) >>7 | (data & 0x3e0) << 6
|
|
| (data & 0x1f) << 19 | 0xff000000;
|
|
#else
|
|
data = *s++;
|
|
*o++ = (data & 0x7c00) << 17 | (data & 0x3e0) << 14
|
|
| (data & 0x1f) << 11 | 0xff;
|
|
#endif
|
|
}
|
|
srow += bpl;
|
|
orow += rowstride;
|
|
}
|
|
}
|
|
|
|
|
|
static void rgb888alsb(GdkImage *image, art_u8 *pixels, int rowstride)
|
|
{
|
|
int xx, yy;
|
|
int width, height;
|
|
int bpl;
|
|
|
|
unsigned char *s; /* for byte order swapping */
|
|
unsigned char *o;
|
|
unsigned char *srow = image->mem, *orow = pixels;
|
|
|
|
width = image->width;
|
|
height = image->height;
|
|
bpl = image->bpl;
|
|
|
|
d(printf ("32 bits/pixel with alpha\n"));
|
|
|
|
/* lsb data */
|
|
for (yy = 0; yy < height; yy++) {
|
|
s = srow;
|
|
o = orow;
|
|
for (xx = 0; xx < width; xx++) {
|
|
*o++ = s[2];
|
|
*o++ = s[1];
|
|
*o++ = s[0];
|
|
*o++ = 0xff;
|
|
s += 4;
|
|
}
|
|
srow += bpl;
|
|
orow += rowstride;
|
|
}
|
|
}
|
|
|
|
static void rgb888lsb(GdkImage *image, art_u8 *pixels, int rowstride)
|
|
{
|
|
int xx, yy;
|
|
int width, height;
|
|
int bpl;
|
|
|
|
unsigned char *srow = image->mem, *orow = pixels;
|
|
unsigned char *o, *s;
|
|
|
|
width = image->width;
|
|
height = image->height;
|
|
bpl = image->bpl;
|
|
|
|
d(printf("32 bit, lsb, no alpha\n"));
|
|
|
|
for (yy = 0; yy < height; yy++) {
|
|
s = srow;
|
|
o = orow;
|
|
for (xx = 0; xx < width; xx++) {
|
|
*o++ = s[2];
|
|
*o++ = s[1];
|
|
*o++ = s[0];
|
|
s += 4;
|
|
}
|
|
srow += bpl;
|
|
orow += rowstride;
|
|
}
|
|
}
|
|
|
|
static void rgb888amsb(GdkImage *image, art_u8 *pixels, int rowstride)
|
|
{
|
|
int xx, yy;
|
|
int width, height;
|
|
int bpl;
|
|
|
|
unsigned char *srow = image->mem, *orow = pixels;
|
|
#ifdef LITTLE
|
|
unsigned long *o;
|
|
unsigned long *s;
|
|
#else
|
|
unsigned char *s; /* for byte order swapping */
|
|
unsigned char *o;
|
|
#endif
|
|
|
|
d(printf("32 bit, msb, with alpha\n"));
|
|
|
|
width = image->width;
|
|
height = image->height;
|
|
bpl = image->bpl;
|
|
|
|
/* msb data */
|
|
for (yy = 0; yy < height; yy++) {
|
|
#ifdef LITTLE
|
|
s = (unsigned long *)srow;
|
|
o = (unsigned long *)orow;
|
|
#else
|
|
s = srow;
|
|
o = orow;
|
|
#endif
|
|
for (xx = 0; xx < width; xx++) {
|
|
#ifdef LITTLE
|
|
*o++ = s[1];
|
|
*o++ = s[2];
|
|
*o++ = s[3];
|
|
*o++ = 0xff;
|
|
s += 4;
|
|
#else
|
|
*o++ = (*s <<8 ) | 0xff; /* untested */
|
|
s++;
|
|
#endif
|
|
}
|
|
srow += bpl;
|
|
orow += rowstride;
|
|
}
|
|
}
|
|
|
|
static void rgb888msb(GdkImage *image, art_u8 *pixels, int rowstride)
|
|
{
|
|
int xx, yy;
|
|
int width, height;
|
|
int bpl;
|
|
|
|
unsigned char *srow = image->mem, *orow = pixels;
|
|
unsigned char *s;
|
|
unsigned char *o;
|
|
|
|
d(printf("32 bit, msb, no alpha\n"));
|
|
|
|
width = image->width;
|
|
height = image->height;
|
|
bpl = image->bpl;
|
|
|
|
for (yy = 0; yy < height; yy++) {
|
|
s = srow;
|
|
o = orow;
|
|
for (xx = 0; xx < width; xx++) {
|
|
*o++ = s[1];
|
|
*o++ = s[2];
|
|
*o++ = s[3];
|
|
s += 4;
|
|
}
|
|
srow += bpl;
|
|
orow += rowstride;
|
|
}
|
|
}
|
|
|
|
typedef void (*cfunc) (GdkImage *image, art_u8 *pixels, int rowstride);
|
|
|
|
static cfunc convert_map[] = {
|
|
rgb1,rgb1,rgb1a,rgb1a,
|
|
rgb8,rgb8,rgb8a,rgb8a,
|
|
rgb555lsb,rgb555msb,rgb555alsb,rgb555amsb,
|
|
rgb565lsb,rgb565msb,rgb565alsb,rgb565amsb,
|
|
rgb888lsb,rgb888msb,rgb888alsb,rgb888amsb
|
|
};
|
|
|
|
/*
|
|
perform actual conversion
|
|
*/
|
|
static void rgbconvert(GdkImage *image, art_u8 *pixels, int rowstride, int alpha)
|
|
{
|
|
int index = (image->byte_order == GDK_MSB_FIRST)
|
|
| (alpha!=0) << 1;
|
|
int bank=0;
|
|
|
|
switch (image->depth) {
|
|
case 1: bank = 0; break;
|
|
case 8: bank = 1; break;
|
|
case 15: bank = 2; break;
|
|
case 16: bank = 3; break;
|
|
case 24:
|
|
case 32: bank = 4; break;
|
|
}
|
|
index |= bank<<2;
|
|
convert_map[index](image, pixels, rowstride);
|
|
}
|
|
|
|
static GdkPixbuf *
|
|
gdk_pixbuf_from_drawable_core (GdkPixmap * window, gint x, gint y, gint width,
|
|
gint height, gint with_alpha)
|
|
{
|
|
GdkImage *image;
|
|
ArtPixBuf *art_pixbuf;
|
|
art_u8 *buff;
|
|
art_u8 *pixels;
|
|
gint rowstride;
|
|
gint fatness;
|
|
gint screen_width, screen_height;
|
|
gint window_width, window_height, window_x, window_y;
|
|
int bpl;
|
|
|
|
g_return_val_if_fail (window != NULL, NULL);
|
|
|
|
/* always returns image in ZPixmap format ... */
|
|
image = gdk_image_get (window, x, y, width, height);
|
|
|
|
fatness = with_alpha ? 4 : 3;
|
|
rowstride = width * fatness;
|
|
|
|
buff = art_alloc (rowstride * height);
|
|
pixels = buff;
|
|
|
|
#if 0
|
|
printf ("bpp = %d\n", image->bpp);
|
|
printf ("depth = %d\n", image->depth);
|
|
printf ("byte order = %d\n", image->byte_order);
|
|
printf ("bytes/line = %d\n", image->bpl);
|
|
#endif
|
|
|
|
bpl = image->bpl;
|
|
|
|
rgbconvert(image, pixels, rowstride, with_alpha);
|
|
gdk_image_destroy (image);
|
|
|
|
if (with_alpha)
|
|
art_pixbuf = art_pixbuf_new_rgba (buff, width, height, rowstride);
|
|
else
|
|
art_pixbuf = art_pixbuf_new_rgb (buff, width, height, rowstride);
|
|
|
|
return gdk_pixbuf_new_from_art_pixbuf (art_pixbuf);
|
|
}
|
|
|
|
/* Public functions */
|
|
|
|
GdkPixbuf *
|
|
gdk_pixbuf_rgb_from_drawable (GdkWindow * window, gint x, gint y, gint width,
|
|
gint height)
|
|
{
|
|
return gdk_pixbuf_from_drawable_core (window, x, y, width, height, 0);
|
|
}
|
|
|
|
GdkPixbuf *
|
|
gdk_pixbuf_rgba_from_drawable (GdkWindow * window, gint x, gint y, gint width,
|
|
gint height)
|
|
{
|
|
return gdk_pixbuf_from_drawable_core (window, x, y, width, height, 1);
|
|
}
|
|
|
|
/*
|
|
* Local variables:
|
|
* c-basic-offset: 8
|
|
* End:
|
|
*/
|