-/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
/* GdkPixbuf library - convert X drawable information to RGB
*
* Copyright (C) 1999 Michael Zucchi
\f
static guint32 mask_table[] = {
- 0x00000000, 0x00000001, 0x00000003, 0x00000007,
- 0x0000000f, 0x0000001f, 0x0000003f, 0x0000007f,
- 0x000000ff, 0x000001ff, 0x000003ff, 0x000007ff,
- 0x00000fff, 0x00001fff, 0x00003fff, 0x00007fff,
- 0x0000ffff, 0x0001ffff, 0x0003ffff, 0x0007ffff,
- 0x000fffff, 0x001fffff, 0x003fffff, 0x007fffff,
- 0x00ffffff, 0x01ffffff, 0x03ffffff, 0x07ffffff,
- 0x0fffffff, 0x1fffffff, 0x3fffffff, 0x7fffffff,
- 0xffffffff
+ 0x00000000, 0x00000001, 0x00000003, 0x00000007,
+ 0x0000000f, 0x0000001f, 0x0000003f, 0x0000007f,
+ 0x000000ff, 0x000001ff, 0x000003ff, 0x000007ff,
+ 0x00000fff, 0x00001fff, 0x00003fff, 0x00007fff,
+ 0x0000ffff, 0x0001ffff, 0x0003ffff, 0x0007ffff,
+ 0x000fffff, 0x001fffff, 0x003fffff, 0x007fffff,
+ 0x00ffffff, 0x01ffffff, 0x03ffffff, 0x07ffffff,
+ 0x0fffffff, 0x1fffffff, 0x3fffffff, 0x7fffffff,
+ 0xffffffff
};
\f
/*
- convert 1 bits-pixel data
- no alpha
-*/
+ * convert 1 bits-pixel data
+ * no alpha
+ */
static void
-rgb1 (GdkImage *image, guchar *pixels, int rowstride, GdkColormap *colormap)
+rgb1 (GdkImage *image,
+ guchar *pixels,
+ int rowstride,
+ GdkColormap *colormap)
{
- int xx, yy;
- int width, height;
- int bpl;
- guint8 *s;
- register guint8 data;
- guint8 *o;
- guint8 *srow = image->mem, *orow = pixels;
-
- d (printf ("1 bits/pixel\n"));
-
- /* convert upto 8 pixels/time */
- /* its probably not worth trying to make this run very fast, who uses
- 1 bit displays anymore? */
- 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 ++) {
- data = srow[xx >> 3] >> (7 - (xx & 7)) & 1;
- *o++ = colormap->colors[data].red;
- *o++ = colormap->colors[data].green;
- *o++ = colormap->colors[data].blue;
- }
- srow += bpl;
- orow += rowstride;
+ int xx, yy;
+ int width, height;
+ int bpl;
+ guint8 *s;
+ register guint8 data;
+ guint8 *o;
+ guint8 *srow = image->mem, *orow = pixels;
+
+ d (printf ("1 bits/pixel\n"));
+
+ /* convert upto 8 pixels/time */
+ /* its probably not worth trying to make this run very fast, who uses
+ * 1 bit displays anymore?
+ */
+ 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 ++)
+ {
+ data = srow[xx >> 3] >> (7 - (xx & 7)) & 1;
+ *o++ = colormap->colors[data].red;
+ *o++ = colormap->colors[data].green;
+ *o++ = colormap->colors[data].blue;
}
+ srow += bpl;
+ orow += rowstride;
+ }
}
/*
- convert 1 bits/pixel data
- with alpha
-*/
+ * convert 1 bits/pixel data
+ * with alpha
+ */
static void
-rgb1a (GdkImage *image, guchar *pixels, int rowstride, GdkColormap *colormap)
+rgb1a (GdkImage *image,
+ guchar *pixels,
+ int rowstride,
+ GdkColormap *colormap)
{
- int xx, yy;
- int width, height;
- int bpl;
- guint8 *s;
- register guint8 data;
- guint8 *o;
- guint8 *srow = image->mem, *orow = pixels;
- guint32 remap[2];
-
- d (printf ("1 bits/pixel\n"));
-
- /* convert upto 8 pixels/time */
- /* its probably not worth trying to make this run very fast, who uses
- 1 bit displays anymore? */
- width = image->width;
- height = image->height;
- bpl = image->bpl;
-
- for (xx = 0; xx < 2; xx++) {
+ int xx, yy;
+ int width, height;
+ int bpl;
+ guint8 *s;
+ register guint8 data;
+ guint8 *o;
+ guint8 *srow = image->mem, *orow = pixels;
+ guint32 remap[2];
+
+ d (printf ("1 bits/pixel\n"));
+
+ /* convert upto 8 pixels/time */
+ /* its probably not worth trying to make this run very fast, who uses
+ * 1 bit displays anymore? */
+ width = image->width;
+ height = image->height;
+ bpl = image->bpl;
+
+ for (xx = 0; xx < 2; xx++)
+ {
#ifdef LITTLE
- remap[xx] = 0xff000000
- | colormap->colors[xx].blue << 16
- | colormap->colors[xx].green << 8
- | colormap->colors[xx].red;
+ remap[xx] = 0xff000000
+ | colormap->colors[xx].blue << 16
+ | colormap->colors[xx].green << 8
+ | colormap->colors[xx].red;
#else
- remap[xx] = 0xff
- | colormap->colors[xx].red << 24
- | colormap->colors[xx].green << 16
- | colormap->colors[xx].blue << 8;
+ remap[xx] = 0xff
+ | colormap->colors[xx].red << 24
+ | colormap->colors[xx].green << 16
+ | colormap->colors[xx].blue << 8;
#endif
+ }
+
+ for (yy = 0; yy < height; yy++)
+ {
+ s = srow;
+ o = orow;
+
+ for (xx = 0; xx < width; xx ++)
+ {
+ data = srow[xx >> 3] >> (7 - (xx & 7)) & 1;
+ *o++ = remap[data];
}
-
- for (yy = 0; yy < height; yy++) {
- s = srow;
- o = orow;
-
- for (xx = 0; xx < width; xx ++) {
- data = srow[xx >> 3] >> (7 - (xx & 7)) & 1;
- *o++ = remap[data];
- }
- srow += bpl;
- orow += rowstride;
- }
+ srow += bpl;
+ orow += rowstride;
+ }
}
/*
- convert 8 bits/pixel data
- no alpha
-*/
+ * convert 8 bits/pixel data
+ * no alpha
+ */
static void
-rgb8 (GdkImage *image, guchar *pixels, int rowstride, GdkColormap *colormap)
+rgb8 (GdkImage *image,
+ guchar *pixels,
+ int rowstride,
+ GdkColormap *colormap)
{
- int xx, yy;
- int width, height;
- int bpl;
- guint32 mask;
- register guint32 data;
- guint8 *srow = image->mem, *orow = pixels;
- register guint8 *s;
- register guint8 *o;
-
- width = image->width;
- height = image->height;
- bpl = image->bpl;
-
- d (printf ("8 bit, no alpha output\n"));
-
- mask = mask_table[image->depth];
-
- for (yy = 0; yy < height; yy++) {
- s = srow;
- o = orow;
- for (xx = 0; xx < width; xx++) {
- data = *s++ & mask;
- *o++ = colormap->colors[data].red;
- *o++ = colormap->colors[data].green;
- *o++ = colormap->colors[data].blue;
- }
- srow += bpl;
- orow += rowstride;
- }
+ int xx, yy;
+ int width, height;
+ int bpl;
+ guint32 mask;
+ register guint32 data;
+ guint8 *srow = image->mem, *orow = pixels;
+ register guint8 *s;
+ register guint8 *o;
+
+ width = image->width;
+ height = image->height;
+ bpl = image->bpl;
+
+ d (printf ("8 bit, no alpha output\n"));
+
+ mask = mask_table[image->depth];
+
+ for (yy = 0; yy < height; yy++)
+ {
+ s = srow;
+ o = orow;
+ for (xx = 0; xx < width; xx++) {
+ data = *s++ & mask;
+ *o++ = colormap->colors[data].red;
+ *o++ = colormap->colors[data].green;
+ *o++ = colormap->colors[data].blue;
+ }
+ srow += bpl;
+ orow += rowstride;
+ }
}
/*
- convert 8 bits/pixel data
- with alpha
-*/
+ * convert 8 bits/pixel data
+ * with alpha
+ */
static void
-rgb8a (GdkImage *image, guchar *pixels, int rowstride, GdkColormap *colormap)
+rgb8a (GdkImage *image,
+ guchar *pixels,
+ int rowstride,
+ GdkColormap *colormap)
{
- int xx, yy;
- int width, height;
- int bpl;
- guint32 mask;
- register guint32 data;
- guint32 remap[256];
- register guint8 *s; /* read 2 pixels at once */
- register guint32 *o;
- guint8 *srow = image->mem, *orow = pixels;
-
- width = image->width;
- height = image->height;
- bpl = image->bpl;
-
- d (printf ("8 bit, with alpha output\n"));
-
- mask = mask_table[image->depth];
-
- for (xx = 0; xx < colormap->size; xx++) {
+ int xx, yy;
+ int width, height;
+ int bpl;
+ guint32 mask;
+ register guint32 data;
+ guint32 remap[256];
+ register guint8 *s; /* read 2 pixels at once */
+ register guint32 *o;
+ guint8 *srow = image->mem, *orow = pixels;
+
+ width = image->width;
+ height = image->height;
+ bpl = image->bpl;
+
+ d (printf ("8 bit, with alpha output\n"));
+
+ mask = mask_table[image->depth];
+
+ for (xx = 0; xx < colormap->size; xx++)
+ {
#ifdef LITTLE
- remap[xx] = 0xff000000
- | colormap->colors[xx].blue << 16
- | colormap->colors[xx].green << 8
- | colormap->colors[xx].red;
+ remap[xx] = 0xff000000
+ | colormap->colors[xx].blue << 16
+ | colormap->colors[xx].green << 8
+ | colormap->colors[xx].red;
#else
- remap[xx] = 0xff
- | colormap->colors[xx].red << 24
- | colormap->colors[xx].green << 16
- | colormap->colors[xx].blue << 8;
+ remap[xx] = 0xff
+ | colormap->colors[xx].red << 24
+ | colormap->colors[xx].green << 16
+ | colormap->colors[xx].blue << 8;
#endif
+ }
+
+ for (yy = 0; yy < height; yy++)
+ {
+ s = srow;
+ o = (guint32 *) orow;
+ for (xx = 0; xx < width; xx ++)
+ {
+ data = *s++ & mask;
+ *o++ = remap[data];
}
-
- for (yy = 0; yy < height; yy++) {
- s = srow;
- o = (guint32 *) orow;
- for (xx = 0; xx < width; xx ++) {
- data = *s++ & mask;
- *o++ = remap[data];
- }
- srow += bpl;
- orow += rowstride;
- }
+ srow += bpl;
+ orow += rowstride;
+ }
}
/*
- convert 16 bits/pixel data
- no alpha
- data in lsb format
-*/
+ * convert 16 bits/pixel data
+ * no alpha
+ * data in lsb format
+ */
static void
-rgb565lsb (GdkImage *image, guchar *pixels, int rowstride, GdkColormap *colormap)
+rgb565lsb (GdkImage *image,
+ guchar *pixels,
+ int rowstride,
+ GdkColormap *colormap)
{
- int xx, yy;
- int width, height;
- int bpl;
+ int xx, yy;
+ int width, height;
+ int bpl;
#ifdef LITTLE
- register guint32 *s; /* read 2 pixels at once */
+ register guint32 *s; /* read 2 pixels at once */
#else
- register guint8 *s; /* read 2 pixels at once */
+ register guint8 *s; /* read 2 pixels at once */
#endif
- register guint16 *o;
- guint8 *srow = image->mem, *orow = pixels;
+ register guint16 *o;
+ guint8 *srow = image->mem, *orow = pixels;
- width = image->width;
- height = image->height;
- bpl = image->bpl;
+ width = image->width;
+ height = image->height;
+ bpl = image->bpl;
- for (yy = 0; yy < height; yy++) {
+ for (yy = 0; yy < height; yy++)
+ {
#ifdef LITTLE
- s = (guint32 *) srow;
+ s = (guint32 *) srow;
#else
- s = srow;
+ s = srow;
#endif
- o = (guint16 *) orow;
- for (xx = 1; xx < width; xx += 2) {
- register guint32 data;
+ o = (guint16 *) orow;
+ for (xx = 1; xx < width; xx += 2)
+ {
+ register guint32 data;
#ifdef LITTLE
- data = *s++;
- *o++ = (data & 0xf800) >> 8 | (data & 0xe000) >> 13
- | (data & 0x7e0) << 5 | (data & 0x600) >> 1;
- *o++ = (data & 0x1f) << 3 | (data & 0x1c) >> 2
- | (data & 0xf8000000) >> 16 | (data & 0xe0000000) >> 21;
- *o++ = (data & 0x7e00000) >> 19 | (data & 0x6000000) >> 25
- | (data & 0x1f0000) >> 5 | (data & 0x1c0000) >> 10;
+ data = *s++;
+ *o++ = (data & 0xf800) >> 8 | (data & 0xe000) >> 13
+ | (data & 0x7e0) << 5 | (data & 0x600) >> 1;
+ *o++ = (data & 0x1f) << 3 | (data & 0x1c) >> 2
+ | (data & 0xf8000000) >> 16 | (data & 0xe0000000) >> 21;
+ *o++ = (data & 0x7e00000) >> 19 | (data & 0x6000000) >> 25
+ | (data & 0x1f0000) >> 5 | (data & 0x1c0000) >> 10;
#else
- /* swap endianness first */
- data = s[0] | s[1] << 8 | s[2] << 16 | s[3] << 24;
- s += 4;
- *o++ = (data & 0xf800) | (data & 0xe000) >> 5
- | (data & 0x7e0) >> 3 | (data & 0x600) >> 9;
- *o++ = (data & 0x1f) << 11 | (data & 0x1c) << 6
- | (data & 0xf8000000) >> 24 | (data & 0xe0000000) >> 29;
- *o++ = (data & 0x7e00000) >> 11 | (data & 0x6000000) >> 17
- | (data & 0x1f0000) >> 13 | (data & 0x1c0000) >> 18;
+ /* swap endianness first */
+ data = s[0] | s[1] << 8 | s[2] << 16 | s[3] << 24;
+ s += 4;
+ *o++ = (data & 0xf800) | (data & 0xe000) >> 5
+ | (data & 0x7e0) >> 3 | (data & 0x600) >> 9;
+ *o++ = (data & 0x1f) << 11 | (data & 0x1c) << 6
+ | (data & 0xf8000000) >> 24 | (data & 0xe0000000) >> 29;
+ *o++ = (data & 0x7e00000) >> 11 | (data & 0x6000000) >> 17
+ | (data & 0x1f0000) >> 13 | (data & 0x1c0000) >> 18;
#endif
- }
- /* check for last remaining pixel */
- if (width & 1) {
- register guint16 data;
+ }
+ /* check for last remaining pixel */
+ if (width & 1)
+ {
+ register guint16 data;
#ifdef LITTLE
- data = *((short *) s);
+ data = *((short *) s);
#else
- data = *((short *) s);
- data = ((data >> 8) & 0xff) | ((data & 0xff) << 8);
+ data = *((short *) s);
+ data = ((data >> 8) & 0xff) | ((data & 0xff) << 8);
#endif
- ((char *) o)[0] = ((data >> 8) & 0xf8) | ((data >> 13) & 0x7);
- ((char *) o)[1] = ((data >> 3) & 0xfc) | ((data >> 9) & 0x3);
- ((char *) o)[2] = ((data << 3) & 0xf8) | ((data >> 2) & 0x7);
- }
- srow += bpl;
- orow += rowstride;
+ ((char *) o)[0] = ((data >> 8) & 0xf8) | ((data >> 13) & 0x7);
+ ((char *) o)[1] = ((data >> 3) & 0xfc) | ((data >> 9) & 0x3);
+ ((char *) o)[2] = ((data << 3) & 0xf8) | ((data >> 2) & 0x7);
}
+ srow += bpl;
+ orow += rowstride;
+ }
}
/*
- convert 16 bits/pixel data
- no alpha
- data in msb format
-*/
+ * convert 16 bits/pixel data
+ * no alpha
+ * data in msb format
+ */
static void
-rgb565msb (GdkImage *image, guchar *pixels, int rowstride, GdkColormap *colormap)
+rgb565msb (GdkImage *image,
+ guchar *pixels,
+ int rowstride,
+ GdkColormap *colormap)
{
- int xx, yy;
- int width, height;
- int bpl;
+ int xx, yy;
+ int width, height;
+ int bpl;
#ifdef LITTLE
- register guint8 *s; /* need to swap data order */
+ register guint8 *s; /* need to swap data order */
#else
- register guint32 *s; /* read 2 pixels at once */
+ register guint32 *s; /* read 2 pixels at once */
#endif
- register guint16 *o;
- guint8 *srow = image->mem, *orow = pixels;
+ register guint16 *o;
+ guint8 *srow = image->mem, *orow = pixels;
- width = image->width;
- height = image->height;
- bpl = image->bpl;
+ width = image->width;
+ height = image->height;
+ bpl = image->bpl;
- for (yy = 0; yy < height; yy++) {
+ for (yy = 0; yy < height; yy++)
+ {
#ifdef LITTLE
- s = srow;
+ s = srow;
#else
- s = (guint32 *) srow;
+ s = (guint32 *) srow;
#endif
- o = (guint16 *) orow;
- for (xx = 1; xx < width; xx += 2) {
- register guint32 data;
+ o = (guint16 *) orow;
+ for (xx = 1; xx < width; xx += 2)
+ {
+ register guint32 data;
#ifdef LITTLE
- /* swap endianness first */
- data = s[0] | s[1] << 8 | s[2] << 16 | s[3] << 24;
- s += 4;
- *o++ = (data & 0xf800) >> 8 | (data & 0xe000) >> 13
- | (data & 0x7e0) << 5 | (data & 0x600) >> 1;
- *o++ = (data & 0x1f) << 3 | (data & 0x1c) >> 2
- | (data & 0xf8000000) >> 16 | (data & 0xe0000000) >> 21;
- *o++ = (data & 0x7e00000) >> 19 | (data & 0x6000000) >> 25
- | (data & 0x1f0000) >> 5 | (data & 0x1c0000) >> 10;
+ /* swap endianness first */
+ data = s[0] | s[1] << 8 | s[2] << 16 | s[3] << 24;
+ s += 4;
+ *o++ = (data & 0xf800) >> 8 | (data & 0xe000) >> 13
+ | (data & 0x7e0) << 5 | (data & 0x600) >> 1;
+ *o++ = (data & 0x1f) << 3 | (data & 0x1c) >> 2
+ | (data & 0xf8000000) >> 16 | (data & 0xe0000000) >> 21;
+ *o++ = (data & 0x7e00000) >> 19 | (data & 0x6000000) >> 25
+ | (data & 0x1f0000) >> 5 | (data & 0x1c0000) >> 10;
#else
- data = *s++;
- *o++ = (data & 0xf800) | (data & 0xe000) >> 5
- | (data & 0x7e0) >> 3 | (data & 0x600) >> 9;
- *o++ = (data & 0x1f) << 11 | (data & 0x1c) << 6
- | (data & 0xf8000000) >> 24 | (data & 0xe0000000) >> 29;
- *o++ = (data & 0x7e00000) >> 11 | (data & 0x6000000) >> 17
- | (data & 0x1f0000) >> 13 | (data & 0x1c0000) >> 18;
+ data = *s++;
+ *o++ = (data & 0xf800) | (data & 0xe000) >> 5
+ | (data & 0x7e0) >> 3 | (data & 0x600) >> 9;
+ *o++ = (data & 0x1f) << 11 | (data & 0x1c) << 6
+ | (data & 0xf8000000) >> 24 | (data & 0xe0000000) >> 29;
+ *o++ = (data & 0x7e00000) >> 11 | (data & 0x6000000) >> 17
+ | (data & 0x1f0000) >> 13 | (data & 0x1c0000) >> 18;
#endif
- }
- /* check for last remaining pixel */
- if (width & 1) {
- register guint16 data;
+ }
+ /* check for last remaining pixel */
+ if (width & 1)
+ {
+ register guint16 data;
#ifdef LITTLE
- data = *((short *) s);
- data = ((data >> 8) & 0xff) | ((data & 0xff) << 8);
+ data = *((short *) s);
+ data = ((data >> 8) & 0xff) | ((data & 0xff) << 8);
#else
- data = *((short *) s);
+ data = *((short *) s);
#endif
- ((char *) o)[0] = ((data >> 8) & 0xf8) | ((data >> 13) & 0x7);
- ((char *) o)[1] = ((data >> 3) & 0xfc) | ((data >> 9) & 0x3);
- ((char *) o)[2] = ((data << 3) & 0xf8) | ((data >> 2) & 0x7);
- }
- srow += bpl;
- orow += rowstride;
+ ((char *) o)[0] = ((data >> 8) & 0xf8) | ((data >> 13) & 0x7);
+ ((char *) o)[1] = ((data >> 3) & 0xfc) | ((data >> 9) & 0x3);
+ ((char *) o)[2] = ((data << 3) & 0xf8) | ((data >> 2) & 0x7);
}
+ srow += bpl;
+ orow += rowstride;
+ }
}
/*
- convert 16 bits/pixel data
- with alpha
- data in lsb format
-*/
+ * convert 16 bits/pixel data
+ * with alpha
+ * data in lsb format
+ */
static void
-rgb565alsb (GdkImage *image, guchar *pixels, int rowstride, GdkColormap *colormap)
+rgb565alsb (GdkImage *image,
+ guchar *pixels,
+ int rowstride,
+ GdkColormap *colormap)
{
- int xx, yy;
- int width, height;
- int bpl;
+ int xx, yy;
+ int width, height;
+ int bpl;
#ifdef LITTLE
- register guint16 *s; /* read 1 pixels at once */
+ register guint16 *s; /* read 1 pixels at once */
#else
- register guint8 *s;
+ register guint8 *s;
#endif
- register guint32 *o;
+ register guint32 *o;
- guint8 *srow = image->mem, *orow = pixels;
+ guint8 *srow = image->mem, *orow = pixels;
- width = image->width;
- height = image->height;
- bpl = image->bpl;
+ width = image->width;
+ height = image->height;
+ bpl = image->bpl;
- for (yy = 0; yy < height; yy++) {
+ for (yy = 0; yy < height; yy++)
+ {
#ifdef LITTLE
- s = (guint16 *) srow;
+ s = (guint16 *) srow;
#else
- s = (guint8 *) srow;
+ s = (guint8 *) srow;
#endif
- o = (guint32 *) orow;
- for (xx = 0; xx < width; xx ++) {
- register guint32 data;
- /* rrrrrggg gggbbbbb -> rrrrrRRR ggggggGG bbbbbBBB aaaaaaaa */
- /* little endian: aaaaaaaa bbbbbBBB ggggggGG rrrrrRRR */
+ o = (guint32 *) orow;
+ for (xx = 0; xx < width; xx ++)
+ {
+ register guint32 data;
+ /* rrrrrggg gggbbbbb -> rrrrrRRR ggggggGG bbbbbBBB aaaaaaaa */
+ /* little endian: aaaaaaaa bbbbbBBB ggggggGG rrrrrRRR */
#ifdef LITTLE
- data = *s++;
- *o++ = (data & 0xf800) >> 8 | (data & 0xe000) >> 13
- | (data & 0x7e0) << 5 | (data & 0x600) >> 1
- | (data & 0x1f) << 19 | (data & 0x1c) << 14
- | 0xff000000;
+ data = *s++;
+ *o++ = (data & 0xf800) >> 8 | (data & 0xe000) >> 13
+ | (data & 0x7e0) << 5 | (data & 0x600) >> 1
+ | (data & 0x1f) << 19 | (data & 0x1c) << 14
+ | 0xff000000;
#else
- /* swap endianness first */
- data = s[0] | s[1] << 8;
- s += 2;
- *o++ = (data & 0xf800) << 16 | (data & 0xe000) << 11
- | (data & 0x7e0) << 13 | (data & 0x600) << 7
- | (data & 0x1f) << 11 | (data & 0x1c) << 6
- | 0xff;
+ /* swap endianness first */
+ data = s[0] | s[1] << 8;
+ s += 2;
+ *o++ = (data & 0xf800) << 16 | (data & 0xe000) << 11
+ | (data & 0x7e0) << 13 | (data & 0x600) << 7
+ | (data & 0x1f) << 11 | (data & 0x1c) << 6
+ | 0xff;
#endif
- }
- srow += bpl;
- orow += rowstride;
}
+ srow += bpl;
+ orow += rowstride;
+ }
}
/*
- convert 16 bits/pixel data
- with alpha
- data in msb format
-*/
+ * convert 16 bits/pixel data
+ * with alpha
+ * data in msb format
+ */
static void
-rgb565amsb (GdkImage *image, guchar *pixels, int rowstride, GdkColormap *colormap)
+rgb565amsb (GdkImage *image,
+ guchar *pixels,
+ int rowstride,
+ GdkColormap *colormap)
{
- int xx, yy;
- int width, height;
- int bpl;
+ int xx, yy;
+ int width, height;
+ int bpl;
#ifdef LITTLE
- register guint8 *s;
+ register guint8 *s;
#else
- register guint16 *s; /* read 1 pixels at once */
+ register guint16 *s; /* read 1 pixels at once */
#endif
- register guint32 *o;
-
- guint8 *srow = image->mem, *orow = pixels;
-
- width = image->width;
- height = image->height;
- bpl = image->bpl;
-
- for (yy = 0; yy < height; yy++) {
- s = srow;
- o = (guint32 *) orow;
- for (xx = 0; xx < width; xx ++) {
- register guint32 data;
- /* rrrrrggg gggbbbbb -> rrrrrRRR gggggg00 bbbbbBBB aaaaaaaa */
- /* little endian: aaaaaaaa bbbbbBBB gggggg00 rrrrrRRR */
+ register guint32 *o;
+
+ guint8 *srow = image->mem, *orow = pixels;
+
+ width = image->width;
+ height = image->height;
+ bpl = image->bpl;
+
+ for (yy = 0; yy < height; yy++)
+ {
+ s = srow;
+ o = (guint32 *) orow;
+ for (xx = 0; xx < width; xx ++)
+ {
+ register guint32 data;
+ /* rrrrrggg gggbbbbb -> rrrrrRRR gggggg00 bbbbbBBB aaaaaaaa */
+ /* little endian: aaaaaaaa bbbbbBBB gggggg00 rrrrrRRR */
#ifdef LITTLE
- /* swap endianness first */
- data = s[0] | s[1] << 8;
- s += 2;
- *o++ = (data & 0xf800) >> 8 | (data & 0xe000) >> 13
- | (data & 0x7e0) << 5 | (data & 0x600) >> 1
- | (data & 0x1f) << 19 | (data & 0x1c) << 14
- | 0xff000000;
+ /* swap endianness first */
+ data = s[0] | s[1] << 8;
+ s += 2;
+ *o++ = (data & 0xf800) >> 8 | (data & 0xe000) >> 13
+ | (data & 0x7e0) << 5 | (data & 0x600) >> 1
+ | (data & 0x1f) << 19 | (data & 0x1c) << 14
+ | 0xff000000;
#else
- data = *s++;
- *o++ = (data & 0xf800) << 16 | (data & 0xe000) << 11
- | (data & 0x7e0) << 13 | (data & 0x600) << 7
- | (data & 0x1f) << 11 | (data & 0x1c) << 6
- | 0xff;
+ data = *s++;
+ *o++ = (data & 0xf800) << 16 | (data & 0xe000) << 11
+ | (data & 0x7e0) << 13 | (data & 0x600) << 7
+ | (data & 0x1f) << 11 | (data & 0x1c) << 6
+ | 0xff;
#endif
- }
- srow += bpl;
- orow += rowstride;
}
+ srow += bpl;
+ orow += rowstride;
+ }
}
/*
- convert 15 bits/pixel data
- no alpha
- data in lsb format
-*/
+ * convert 15 bits/pixel data
+ * no alpha
+ * data in lsb format
+ */
static void
-rgb555lsb (GdkImage *image, guchar *pixels, int rowstride, GdkColormap *colormap)
+rgb555lsb (GdkImage *image,
+ guchar *pixels,
+ int rowstride,
+ GdkColormap *colormap)
{
- int xx, yy;
- int width, height;
- int bpl;
+ int xx, yy;
+ int width, height;
+ int bpl;
#ifdef LITTLE
- register guint32 *s; /* read 2 pixels at once */
+ register guint32 *s; /* read 2 pixels at once */
#else
- register guint8 *s; /* read 2 pixels at once */
+ register guint8 *s; /* read 2 pixels at once */
#endif
- register guint16 *o;
- guint8 *srow = image->mem, *orow = pixels;
+ register guint16 *o;
+ guint8 *srow = image->mem, *orow = pixels;
- width = image->width;
- height = image->height;
- bpl = image->bpl;
+ width = image->width;
+ height = image->height;
+ bpl = image->bpl;
- for (yy = 0; yy < height; yy++) {
+ for (yy = 0; yy < height; yy++)
+ {
#ifdef LITTLE
- s = (guint32 *) srow;
+ s = (guint32 *) srow;
#else
- s = srow;
+ s = srow;
#endif
- o = (guint16 *) orow;
- for (xx = 1; xx < width; xx += 2) {
- register guint32 data;
+ o = (guint16 *) orow;
+ for (xx = 1; xx < width; xx += 2)
+ {
+ register guint32 data;
#ifdef LITTLE
- data = *s++;
- *o++ = (data & 0x7c00) >> 7 | (data & 0x7000) >> 12
- | (data & 0x3e0) << 6 | (data & 0x380) << 1;
- *o++ = (data & 0x1f) << 3 | (data & 0x1c) >> 2
- | (data & 0x7c000000) >> 15 | (data & 0x70000000) >> 20;
- *o++ = (data & 0x3e00000) >> 18 | (data & 0x3800000) >> 23
- | (data & 0x1f0000) >> 5 | (data & 0x1c0000) >> 10;
+ data = *s++;
+ *o++ = (data & 0x7c00) >> 7 | (data & 0x7000) >> 12
+ | (data & 0x3e0) << 6 | (data & 0x380) << 1;
+ *o++ = (data & 0x1f) << 3 | (data & 0x1c) >> 2
+ | (data & 0x7c000000) >> 15 | (data & 0x70000000) >> 20;
+ *o++ = (data & 0x3e00000) >> 18 | (data & 0x3800000) >> 23
+ | (data & 0x1f0000) >> 5 | (data & 0x1c0000) >> 10;
#else
- /* swap endianness first */
- data = s[0] | s[1] << 8 | s[2] << 16 | s[3] << 24;
- s += 4;
- *o++ = (data & 0x7c00) << 1 | (data & 0x7000) >> 4
- | (data & 0x3e0) >> 2 | (data & 0x380) >> 7;
- *o++ = (data & 0x1f) << 11 | (data & 0x1c) << 6
- | (data & 0x7c000000) >> 23 | (data & 0x70000000) >> 28;
- *o++ = (data & 0x3e00000) >> 10 | (data & 0x3800000) >> 15
- | (data & 0x1f0000) >> 13 | (data & 0x1c0000) >> 18;
+ /* swap endianness first */
+ data = s[0] | s[1] << 8 | s[2] << 16 | s[3] << 24;
+ s += 4;
+ *o++ = (data & 0x7c00) << 1 | (data & 0x7000) >> 4
+ | (data & 0x3e0) >> 2 | (data & 0x380) >> 7;
+ *o++ = (data & 0x1f) << 11 | (data & 0x1c) << 6
+ | (data & 0x7c000000) >> 23 | (data & 0x70000000) >> 28;
+ *o++ = (data & 0x3e00000) >> 10 | (data & 0x3800000) >> 15
+ | (data & 0x1f0000) >> 13 | (data & 0x1c0000) >> 18;
#endif
- }
- /* check for last remaining pixel */
- if (width & 1) {
- register guint16 data;
+ }
+ /* check for last remaining pixel */
+ if (width & 1)
+ {
+ register guint16 data;
#ifdef LITTLE
- data = *((short *) s);
+ data = *((short *) s);
#else
- data = *((short *) s);
- data = ((data >> 8) & 0xff) | ((data & 0xff) << 8);
+ data = *((short *) s);
+ data = ((data >> 8) & 0xff) | ((data & 0xff) << 8);
#endif
- ((char *) o)[0] = (data & 0x7c00) >> 7 | (data & 0x7000) >> 12;
- ((char *) o)[1] = (data & 0x3e0) >> 2 | (data & 0x380) >> 7;
- ((char *) o)[2] = (data & 0x1f) << 3 | (data & 0x1c) >> 2;
- }
- srow += bpl;
- orow += rowstride;
+ ((char *) o)[0] = (data & 0x7c00) >> 7 | (data & 0x7000) >> 12;
+ ((char *) o)[1] = (data & 0x3e0) >> 2 | (data & 0x380) >> 7;
+ ((char *) o)[2] = (data & 0x1f) << 3 | (data & 0x1c) >> 2;
}
+ srow += bpl;
+ orow += rowstride;
+ }
}
/*
- convert 15 bits/pixel data
- no alpha
- data in msb format
-*/
+ * convert 15 bits/pixel data
+ * no alpha
+ * data in msb format
+ */
static void
-rgb555msb (GdkImage *image, guchar *pixels, int rowstride, GdkColormap *colormap)
+rgb555msb (GdkImage *image,
+ guchar *pixels,
+ int rowstride,
+ GdkColormap *colormap)
{
- int xx, yy;
- int width, height;
- int bpl;
+ int xx, yy;
+ int width, height;
+ int bpl;
#ifdef LITTLE
- register guint8 *s; /* read 2 pixels at once */
+ register guint8 *s; /* read 2 pixels at once */
#else
- register guint32 *s; /* read 2 pixels at once */
+ register guint32 *s; /* read 2 pixels at once */
#endif
- register guint16 *o;
- guint8 *srow = image->mem, *orow = pixels;
-
- width = image->width;
- height = image->height;
- bpl = image->bpl;
-
- for (yy = 0; yy < height; yy++) {
- s = srow;
- o = (guint16 *) orow;
- for (xx = 1; xx < width; xx += 2) {
- register guint32 data;
+ register guint16 *o;
+ guint8 *srow = image->mem, *orow = pixels;
+
+ width = image->width;
+ height = image->height;
+ bpl = image->bpl;
+
+ for (yy = 0; yy < height; yy++)
+ {
+ s = srow;
+ o = (guint16 *) orow;
+ for (xx = 1; xx < width; xx += 2)
+ {
+ register guint32 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 & 0x7000) >> 12
- | (data & 0x3e0) << 6 | (data & 0x380) << 1;
- *o++ = (data & 0x1f) << 3 | (data & 0x1c) >> 2
- | (data & 0x7c000000) >> 15 | (data & 0x70000000) >> 20;
- *o++ = (data & 0x3e00000) >> 18 | (data & 0x3800000) >> 23
- | (data & 0x1f0000) >> 5 | (data & 0x1c0000) >> 10;
+ /* swap endianness first */
+ data = s[0] | s[1] << 8 | s[2] << 16 | s[3] << 24;
+ s += 4;
+ *o++ = (data & 0x7c00) >> 7 | (data & 0x7000) >> 12
+ | (data & 0x3e0) << 6 | (data & 0x380) << 1;
+ *o++ = (data & 0x1f) << 3 | (data & 0x1c) >> 2
+ | (data & 0x7c000000) >> 15 | (data & 0x70000000) >> 20;
+ *o++ = (data & 0x3e00000) >> 18 | (data & 0x3800000) >> 23
+ | (data & 0x1f0000) >> 5 | (data & 0x1c0000) >> 10;
#else
- data = *s++;
- *o++ = (data & 0x7c00) << 1 | (data & 0x7000) >> 4
- | (data & 0x3e0) >> 2 | (data & 0x380) >> 7;
- *o++ = (data & 0x1f) << 11 | (data & 0x1c) << 6
- | (data & 0x7c000000) >> 23 | (data & 0x70000000) >> 28;
- *o++ = (data & 0x3e00000) >> 10 | (data & 0x3800000) >> 15
- | (data & 0x1f0000) >> 13 | (data & 0x1c0000) >> 18;
+ data = *s++;
+ *o++ = (data & 0x7c00) << 1 | (data & 0x7000) >> 4
+ | (data & 0x3e0) >> 2 | (data & 0x380) >> 7;
+ *o++ = (data & 0x1f) << 11 | (data & 0x1c) << 6
+ | (data & 0x7c000000) >> 23 | (data & 0x70000000) >> 28;
+ *o++ = (data & 0x3e00000) >> 10 | (data & 0x3800000) >> 15
+ | (data & 0x1f0000) >> 13 | (data & 0x1c0000) >> 18;
#endif
- }
- /* check for last remaining pixel */
- if (width & 1) {
- register guint16 data;
+ }
+ /* check for last remaining pixel */
+ if (width & 1)
+ {
+ register guint16 data;
#ifdef LITTLE
- data = *((short *) s);
- data = ((data >> 8) & 0xff) | ((data & 0xff) << 8);
+ data = *((short *) s);
+ data = ((data >> 8) & 0xff) | ((data & 0xff) << 8);
#else
- data = *((short *) s);
+ data = *((short *) s);
#endif
- ((char *) o)[0] = (data & 0x7c00) >> 7 | (data & 0x7000) >> 12;
- ((char *) o)[1] = (data & 0x3e0) >> 2 | (data & 0x380) >> 7;
- ((char *) o)[2] = (data & 0x1f) << 3 | (data & 0x1c) >> 2;
- }
- srow += bpl;
- orow += rowstride;
+ ((char *) o)[0] = (data & 0x7c00) >> 7 | (data & 0x7000) >> 12;
+ ((char *) o)[1] = (data & 0x3e0) >> 2 | (data & 0x380) >> 7;
+ ((char *) o)[2] = (data & 0x1f) << 3 | (data & 0x1c) >> 2;
}
+ srow += bpl;
+ orow += rowstride;
+ }
}
/*
- convert 15 bits/pixel data
- with alpha
- data in lsb format
-*/
+ * convert 15 bits/pixel data
+ * with alpha
+ * data in lsb format
+ */
static void
-rgb555alsb (GdkImage *image, guchar *pixels, int rowstride, GdkColormap *colormap)
+rgb555alsb (GdkImage *image,
+ guchar *pixels,
+ int rowstride,
+ GdkColormap *colormap)
{
- int xx, yy;
- int width, height;
- int bpl;
+ int xx, yy;
+ int width, height;
+ int bpl;
#ifdef LITTLE
- register guint16 *s; /* read 1 pixels at once */
+ register guint16 *s; /* read 1 pixels at once */
#else
- register guint8 *s;
+ register guint8 *s;
#endif
- register guint32 *o;
+ register guint32 *o;
- guint8 *srow = image->mem, *orow = pixels;
+ guint8 *srow = image->mem, *orow = pixels;
- width = image->width;
- height = image->height;
- bpl = image->bpl;
+ width = image->width;
+ height = image->height;
+ bpl = image->bpl;
- for (yy = 0; yy < height; yy++) {
+ for (yy = 0; yy < height; yy++)
+ {
#ifdef LITTLE
- s = (guint16 *) srow;
+ s = (guint16 *) srow;
#else
- s = srow;
+ s = srow;
#endif
- o = (guint32 *) orow;
- for (xx = 0; xx < width; xx++) {
- register guint32 data;
- /* rrrrrggg gggbbbbb -> rrrrrRRR gggggGGG bbbbbBBB aaaaaaaa */
- /* little endian: aaaaaaaa bbbbbBBB gggggGGG rrrrrRRR */
+ o = (guint32 *) orow;
+ for (xx = 0; xx < width; xx++)
+ {
+ register guint32 data;
+ /* rrrrrggg gggbbbbb -> rrrrrRRR gggggGGG bbbbbBBB aaaaaaaa */
+ /* little endian: aaaaaaaa bbbbbBBB gggggGGG rrrrrRRR */
#ifdef LITTLE
- data = *s++;
- *o++ = (data & 0x7c00) >> 7 | (data & 0x7000) >> 12
- | (data & 0x3e0) << 6 | (data & 0x380) << 1
- | (data & 0x1f) << 19 | (data & 0x1c) << 14
- | 0xff000000;
+ data = *s++;
+ *o++ = (data & 0x7c00) >> 7 | (data & 0x7000) >> 12
+ | (data & 0x3e0) << 6 | (data & 0x380) << 1
+ | (data & 0x1f) << 19 | (data & 0x1c) << 14
+ | 0xff000000;
#else
- /* swap endianness first */
- data = s[0] | s[1] << 8;
- s += 2;
- *o++ = (data & 0x7c00) << 17 | (data & 0x7000) << 12
- | (data & 0x3e0) << 14 | (data & 0x380) << 9
- | (data & 0x1f) << 11 | (data & 0x1c) << 6
- | 0xff;
+ /* swap endianness first */
+ data = s[0] | s[1] << 8;
+ s += 2;
+ *o++ = (data & 0x7c00) << 17 | (data & 0x7000) << 12
+ | (data & 0x3e0) << 14 | (data & 0x380) << 9
+ | (data & 0x1f) << 11 | (data & 0x1c) << 6
+ | 0xff;
#endif
- }
- srow += bpl;
- orow += rowstride;
}
+ srow += bpl;
+ orow += rowstride;
+ }
}
/*
- convert 15 bits/pixel data
- with alpha
- data in msb format
-*/
+ * convert 15 bits/pixel data
+ * with alpha
+ * data in msb format
+ */
static void
-rgb555amsb (GdkImage *image, guchar *pixels, int rowstride, GdkColormap *colormap)
+rgb555amsb (GdkImage *image,
+ guchar *pixels,
+ int rowstride,
+ GdkColormap *colormap)
{
- int xx, yy;
- int width, height;
- int bpl;
+ int xx, yy;
+ int width, height;
+ int bpl;
#ifdef LITTLE
- register guint16 *s; /* read 1 pixels at once */
+ register guint16 *s; /* read 1 pixels at once */
#else
- register guint8 *s;
+ register guint8 *s;
#endif
- register guint32 *o;
+ register guint32 *o;
- guint8 *srow = image->mem, *orow = pixels;
+ guint8 *srow = image->mem, *orow = pixels;
- width = image->width;
- height = image->height;
- bpl = image->bpl;
+ width = image->width;
+ height = image->height;
+ bpl = image->bpl;
- for (yy = 0; yy < height; yy++) {
+ for (yy = 0; yy < height; yy++)
+ {
#ifdef LITTLE
- s = (guint16 *) srow;
+ s = (guint16 *) srow;
#else
- s = srow;
+ s = srow;
#endif
- o = (guint32 *) orow;
- for (xx = 0; xx < width; xx++) {
- register guint32 data;
- /* rrrrrggg gggbbbbb -> rrrrrRRR gggggGGG bbbbbBBB aaaaaaaa */
- /* little endian: aaaaaaaa bbbbbBBB gggggGGG rrrrrRRR */
+ o = (guint32 *) orow;
+ for (xx = 0; xx < width; xx++)
+ {
+ register guint32 data;
+ /* rrrrrggg gggbbbbb -> rrrrrRRR gggggGGG bbbbbBBB aaaaaaaa */
+ /* little endian: aaaaaaaa bbbbbBBB gggggGGG rrrrrRRR */
#ifdef LITTLE
- /* swap endianness first */
- data = s[0] | s[1] << 8;
- s += 2;
- *o++ = (data & 0x7c00) >> 7 | (data & 0x7000) >> 12
- | (data & 0x3e0) << 6 | (data & 0x380) << 1
- | (data & 0x1f) << 19 | (data & 0x1c) << 14
- | 0xff000000;
+ /* swap endianness first */
+ data = s[0] | s[1] << 8;
+ s += 2;
+ *o++ = (data & 0x7c00) >> 7 | (data & 0x7000) >> 12
+ | (data & 0x3e0) << 6 | (data & 0x380) << 1
+ | (data & 0x1f) << 19 | (data & 0x1c) << 14
+ | 0xff000000;
#else
- data = *s++;
- *o++ = (data & 0x7c00) << 17 | (data & 0x7000) << 12
- | (data & 0x3e0) << 14 | (data & 0x380) << 9
- | (data & 0x1f) << 11 | (data & 0x1c) << 6
- | 0xff;
+ data = *s++;
+ *o++ = (data & 0x7c00) << 17 | (data & 0x7000) << 12
+ | (data & 0x3e0) << 14 | (data & 0x380) << 9
+ | (data & 0x1f) << 11 | (data & 0x1c) << 6
+ | 0xff;
#endif
- }
- srow += bpl;
- orow += rowstride;
}
+ srow += bpl;
+ orow += rowstride;
+ }
}
static void
-rgb888alsb (GdkImage *image, guchar *pixels, int rowstride, GdkColormap *colormap)
+rgb888alsb (GdkImage *image,
+ guchar *pixels,
+ int rowstride,
+ GdkColormap *colormap)
{
- int xx, yy;
- int width, height;
- int bpl;
-
- guint8 *s; /* for byte order swapping */
- guint8 *o;
- guint8 *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;
+ int xx, yy;
+ int width, height;
+ int bpl;
+
+ guint8 *s; /* for byte order swapping */
+ guint8 *o;
+ guint8 *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, guchar *pixels, int rowstride, GdkColormap *colormap)
+rgb888lsb (GdkImage *image,
+ guchar *pixels,
+ int rowstride,
+ GdkColormap *colormap)
{
- int xx, yy;
- int width, height;
- int bpl;
-
- guint8 *srow = image->mem, *orow = pixels;
- guint8 *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;
+ int xx, yy;
+ int width, height;
+ int bpl;
+
+ guint8 *srow = image->mem, *orow = pixels;
+ guint8 *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, guchar *pixels, int rowstride, GdkColormap *colormap)
+rgb888amsb (GdkImage *image,
+ guchar *pixels,
+ int rowstride,
+ GdkColormap *colormap)
{
- int xx, yy;
- int width, height;
- int bpl;
+ int xx, yy;
+ int width, height;
+ int bpl;
- guint8 *srow = image->mem, *orow = pixels;
+ guint8 *srow = image->mem, *orow = pixels;
#ifdef LITTLE
- guint32 *o;
- guint32 *s;
+ guint32 *o;
+ guint32 *s;
#else
- guint8 *s; /* for byte order swapping */
- guint8 *o;
+ guint8 *s; /* for byte order swapping */
+ guint8 *o;
#endif
- d (printf ("32 bit, msb, with alpha\n"));
+ d (printf ("32 bit, msb, with alpha\n"));
- width = image->width;
- height = image->height;
- bpl = image->bpl;
+ width = image->width;
+ height = image->height;
+ bpl = image->bpl;
- /* msb data */
- for (yy = 0; yy < height; yy++) {
+ /* msb data */
+ for (yy = 0; yy < height; yy++)
+ {
#ifdef LITTLE
- s = (guint32 *) srow;
- o = (guint32 *) orow;
+ s = (guint32 *) srow;
+ o = (guint32 *) orow;
#else
- s = srow;
- o = orow;
+ s = srow;
+ o = orow;
#endif
- for (xx = 0; xx < width; xx++) {
+ for (xx = 0; xx < width; xx++)
+ {
#ifdef LITTLE
- *o++ = s[1];
- *o++ = s[2];
- *o++ = s[3];
- *o++ = 0xff;
- s += 4;
+ *o++ = s[1];
+ *o++ = s[2];
+ *o++ = s[3];
+ *o++ = 0xff;
+ s += 4;
#else
- *o++ = (*s << 8) | 0xff; /* untested */
- s++;
+ *o++ = (*s << 8) | 0xff; /* untested */
+ s++;
#endif
- }
- srow += bpl;
- orow += rowstride;
}
+ srow += bpl;
+ orow += rowstride;
+ }
}
static void
-rgb888msb (GdkImage *image, guchar *pixels, int rowstride, GdkColormap *colormap)
+rgb888msb (GdkImage *image,
+ guchar *pixels,
+ int rowstride,
+ GdkColormap *colormap)
{
- int xx, yy;
- int width, height;
- int bpl;
-
- guint8 *srow = image->mem, *orow = pixels;
- guint8 *s;
- guint8 *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;
+ int xx, yy;
+ int width, height;
+ int bpl;
+
+ guint8 *srow = image->mem, *orow = pixels;
+ guint8 *s;
+ guint8 *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;
+ }
}
/*
- This should work correctly with any display/any endianness, but will probably
- run quite slow
-*/
+ * This should work correctly with any display/any endianness, but will probably
+ * run quite slow
+ */
static void
-convert_real_slow (GdkImage *image, guchar *pixels, int rowstride, GdkColormap *cmap, int alpha)
+convert_real_slow (GdkImage *image,
+ guchar *pixels,
+ int rowstride,
+ GdkColormap *cmap,
+ int alpha)
{
- int xx, yy;
- int width, height;
- int bpl;
- guint8 *srow = image->mem, *orow = pixels;
- guint8 *s;
- guint8 *o;
- guint32 pixel;
- GdkVisual *v;
- guint8 component;
- int i;
-
- width = image->width;
- height = image->height;
- bpl = image->bpl;
- v = gdk_colormap_get_visual(cmap);
-
- d(printf("rgb mask/shift/prec = %x:%x:%x %d:%d:%d %d:%d:%d\n",
- v->red_mask, v->green_mask, v->blue_mask,
- v->red_shift, v->green_shift, v->blue_shift,
- v->red_prec, v->green_prec, v->blue_prec));
-
- for (yy = 0; yy < height; yy++) {
- s = srow;
- o = orow;
- for (xx = 0; xx < width; xx++) {
- pixel = gdk_image_get_pixel(image, xx, yy);
- switch (v->type) {
+ int xx, yy;
+ int width, height;
+ int bpl;
+ guint8 *srow = image->mem, *orow = pixels;
+ guint8 *s;
+ guint8 *o;
+ guint32 pixel;
+ GdkVisual *v;
+ guint8 component;
+ int i;
+
+ width = image->width;
+ height = image->height;
+ bpl = image->bpl;
+ v = gdk_colormap_get_visual(cmap);
+
+ d(printf("rgb mask/shift/prec = %x:%x:%x %d:%d:%d %d:%d:%d\n",
+ v->red_mask, v->green_mask, v->blue_mask,
+ v->red_shift, v->green_shift, v->blue_shift,
+ v->red_prec, v->green_prec, v->blue_prec));
+
+ for (yy = 0; yy < height; yy++)
+ {
+ s = srow;
+ o = orow;
+ for (xx = 0; xx < width; xx++)
+ {
+ pixel = gdk_image_get_pixel(image, xx, yy);
+ switch (v->type)
+ {
/* I assume this is right for static & greyscale's too? */
- case GDK_VISUAL_STATIC_GRAY:
- case GDK_VISUAL_GRAYSCALE:
- case GDK_VISUAL_STATIC_COLOR:
- case GDK_VISUAL_PSEUDO_COLOR:
- *o++ = cmap->colors[pixel].red;
- *o++ = cmap->colors[pixel].green;
- *o++ = cmap->colors[pixel].blue;
- break;
- case GDK_VISUAL_TRUE_COLOR:
+ case GDK_VISUAL_STATIC_GRAY:
+ case GDK_VISUAL_GRAYSCALE:
+ case GDK_VISUAL_STATIC_COLOR:
+ case GDK_VISUAL_PSEUDO_COLOR:
+ *o++ = cmap->colors[pixel].red;
+ *o++ = cmap->colors[pixel].green;
+ *o++ = cmap->colors[pixel].blue;
+ break;
+ case GDK_VISUAL_TRUE_COLOR:
/* This is odd because it must sometimes shift left (otherwise
- I'd just shift >> (*_shift - 8 + *_prec + <0-7>). This logic
- should work for all bit sizes/shifts/etc. */
- component = 0;
- for (i = 24; i < 32; i += v->red_prec)
- component |= ((pixel & v->red_mask) << (32 - v->red_shift - v->red_prec)) >> i;
- *o++ = component;
- component = 0;
- for (i = 24; i < 32; i += v->green_prec)
- component |= ((pixel & v->green_mask) << (32 - v->green_shift - v->green_prec)) >> i;
- *o++ = component;
- component = 0;
- for (i = 24; i < 32; i += v->blue_prec)
- component |= ((pixel & v->blue_mask) << (32 - v->blue_shift - v->blue_prec)) >> i;
- *o++ = component;
- break;
- case GDK_VISUAL_DIRECT_COLOR:
- *o++ = cmap->colors[((pixel & v->red_mask) << (32 - v->red_shift - v->red_prec)) >> 24].red;
- *o++ = cmap->colors[((pixel & v->green_mask) << (32 - v->green_shift - v->green_prec)) >> 24].green;
- *o++ = cmap->colors[((pixel & v->blue_mask) << (32 - v->blue_shift - v->blue_prec)) >> 24].blue;
- break;
- }
- if (alpha)
- *o++ = 0xff;
- }
- srow += bpl;
- orow += rowstride;
+ * I'd just shift >> (*_shift - 8 + *_prec + <0-7>). This logic
+ * should work for all bit sizes/shifts/etc.
+ */
+ component = 0;
+ for (i = 24; i < 32; i += v->red_prec)
+ component |= ((pixel & v->red_mask) << (32 - v->red_shift - v->red_prec)) >> i;
+ *o++ = component;
+ component = 0;
+ for (i = 24; i < 32; i += v->green_prec)
+ component |= ((pixel & v->green_mask) << (32 - v->green_shift - v->green_prec)) >> i;
+ *o++ = component;
+ component = 0;
+ for (i = 24; i < 32; i += v->blue_prec)
+ component |= ((pixel & v->blue_mask) << (32 - v->blue_shift - v->blue_prec)) >> i;
+ *o++ = component;
+ break;
+ case GDK_VISUAL_DIRECT_COLOR:
+ *o++ = cmap->colors[((pixel & v->red_mask) << (32 - v->red_shift - v->red_prec)) >> 24].red;
+ *o++ = cmap->colors[((pixel & v->green_mask) << (32 - v->green_shift - v->green_prec)) >> 24].green;
+ *o++ = cmap->colors[((pixel & v->blue_mask) << (32 - v->blue_shift - v->blue_prec)) >> 24].blue;
+ break;
+ }
+ if (alpha)
+ *o++ = 0xff;
}
+ srow += bpl;
+ orow += rowstride;
+ }
}
typedef void (* cfunc) (GdkImage *image, guchar *pixels, int rowstride, GdkColormap *cmap);
static cfunc convert_map[] = {
- rgb1,rgb1,rgb1a,rgb1a,
- rgb8,rgb8,rgb8a,rgb8a,
- rgb555lsb,rgb555msb,rgb555alsb,rgb555amsb,
- rgb565lsb,rgb565msb,rgb565alsb,rgb565amsb,
- rgb888lsb,rgb888msb,rgb888alsb,rgb888amsb
+ rgb1,rgb1,rgb1a,rgb1a,
+ rgb8,rgb8,rgb8a,rgb8a,
+ rgb555lsb,rgb555msb,rgb555alsb,rgb555amsb,
+ rgb565lsb,rgb565msb,rgb565alsb,rgb565amsb,
+ rgb888lsb,rgb888msb,rgb888alsb,rgb888amsb
};
/*
- perform actual conversion
-
- If we can, try and use the optimised code versions, but as a default
- fallback, and always for direct colour, use the generic/slow but complete
- conversion function.
-*/
+ * perform actual conversion
+ *
+ * If we can, try and use the optimised code versions, but as a default
+ * fallback, and always for direct colour, use the generic/slow but complete
+ * conversion function.
+ */
static void
-rgbconvert (GdkImage *image, guchar *pixels, int rowstride, int alpha, GdkColormap *cmap)
+rgbconvert (GdkImage *image,
+ guchar *pixels,
+ int rowstride,
+ int alpha,
+ GdkColormap *cmap)
{
- int index = (image->byte_order == GDK_MSB_FIRST) | (alpha != 0) << 1;
- int bank=5; /* default fallback converter */
- GdkVisual *v = gdk_colormap_get_visual(cmap);
+ int index = (image->byte_order == GDK_MSB_FIRST) | (alpha != 0) << 1;
+ int bank=5; /* default fallback converter */
+ GdkVisual *v = gdk_colormap_get_visual(cmap);
- d(printf("masks = %x:%x:%x\n", v->red_mask, v->green_mask, v->blue_mask));
- d(printf("image depth = %d, bpp = %d\n", image->depth, image->bpp));
+ d(printf("masks = %x:%x:%x\n", v->red_mask, v->green_mask, v->blue_mask));
+ d(printf("image depth = %d, bpp = %d\n", image->depth, image->bpp));
- switch (v->type) {
+ switch (v->type)
+ {
/* I assume this is right for static & greyscale's too? */
- case GDK_VISUAL_STATIC_GRAY:
- case GDK_VISUAL_GRAYSCALE:
- case GDK_VISUAL_STATIC_COLOR:
- case GDK_VISUAL_PSEUDO_COLOR:
- switch (image->bpp) {
- case 1:
- bank = 0;
- break;
- case 8:
- bank = 1;
- break;
- }
- break;
- case GDK_VISUAL_TRUE_COLOR:
- switch (image->depth) {
- case 15:
- if (v->red_mask == 0x7c00 && v->green_mask == 0x3e0 && v->blue_mask == 0x1f
- && image->bpp == 16)
- bank = 2;
- break;
- case 16:
- if (v->red_mask == 0xf800 && v->green_mask == 0x7e0 && v->blue_mask == 0x1f
- && image->bpp == 16)
- bank = 3;
- break;
- case 24:
- case 32:
- if (v->red_mask == 0xff0000 && v->green_mask == 0xff00 && v->blue_mask == 0xff
- && image->bpp == 32)
- bank = 4;
- break;
- }
- break;
- case GDK_VISUAL_DIRECT_COLOR:
- /* always use the slow version */
- break;
+ case GDK_VISUAL_STATIC_GRAY:
+ case GDK_VISUAL_GRAYSCALE:
+ case GDK_VISUAL_STATIC_COLOR:
+ case GDK_VISUAL_PSEUDO_COLOR:
+ switch (image->bpp)
+ {
+ case 1:
+ bank = 0;
+ break;
+ case 8:
+ bank = 1;
+ break;
}
-
- d(printf("converting using conversion function in bank %d\n", bank));
-
- if (bank==5) {
- convert_real_slow(image, pixels, rowstride, cmap, alpha);
- } else {
- index |= bank << 2;
- (* convert_map[index]) (image, pixels, rowstride, cmap);
+ break;
+ case GDK_VISUAL_TRUE_COLOR:
+ switch (image->depth)
+ {
+ case 15:
+ if (v->red_mask == 0x7c00 && v->green_mask == 0x3e0 && v->blue_mask == 0x1f
+ && image->bpp == 16)
+ bank = 2;
+ break;
+ case 16:
+ if (v->red_mask == 0xf800 && v->green_mask == 0x7e0 && v->blue_mask == 0x1f
+ && image->bpp == 16)
+ bank = 3;
+ break;
+ case 24:
+ case 32:
+ if (v->red_mask == 0xff0000 && v->green_mask == 0xff00 && v->blue_mask == 0xff
+ && image->bpp == 32)
+ bank = 4;
+ break;
}
+ break;
+ case GDK_VISUAL_DIRECT_COLOR:
+ /* always use the slow version */
+ break;
+ }
+
+ d(printf("converting using conversion function in bank %d\n", bank));
+
+ if (bank==5)
+ {
+ convert_real_slow(image, pixels, rowstride, cmap, alpha);
+ }
+ else
+ {
+ index |= bank << 2;
+ (* convert_map[index]) (image, pixels, rowstride, cmap);
+ }
}
* allocated for the pixbuf to be created.
**/
GdkPixbuf *
-gdk_pixbuf_get_from_drawable (GdkPixbuf *dest,
- GdkDrawable *src, GdkColormap *cmap,
- int src_x, int src_y,
+gdk_pixbuf_get_from_drawable (GdkPixbuf *dest,
+ GdkDrawable *src,
+ GdkColormap *cmap,
+ int src_x, int src_y,
int dest_x, int dest_y,
- int width, int height)
+ int width, int height)
{
- int src_width, src_height;
- GdkImage *image;
- int rowstride, bpp, alpha;
-
- /* General sanity checks */
-
- g_return_val_if_fail (src != NULL, NULL);
-
- if (GDK_IS_PIXMAP (src))
- g_return_val_if_fail (cmap != NULL, NULL);
- else
- /* FIXME: this is not perfect, since is_viewable() only tests
- * recursively up the Gdk parent window tree, but stops at
- * foreign windows or Gdk toplevels. I.e. if a window manager
- * unmapped one of its own windows, this won't work.
- */
- g_return_val_if_fail (gdk_window_is_viewable (src), NULL);
-
- if (!dest)
- g_return_val_if_fail (dest_x == 0 && dest_y == 0, NULL);
- else {
- g_return_val_if_fail (dest->colorspace == GDK_COLORSPACE_RGB, NULL);
- g_return_val_if_fail (dest->n_channels == 3 || dest->n_channels == 4, NULL);
- g_return_val_if_fail (dest->bits_per_sample == 8, NULL);
- }
-
- /* Coordinate sanity checks */
-
- gdk_drawable_get_size (src, &src_width, &src_height);
-
- g_return_val_if_fail (src_x >= 0 && src_y >= 0, NULL);
- g_return_val_if_fail (src_x + width <= src_width && src_y + height <= src_height, NULL);
-
- if (dest) {
- g_return_val_if_fail (dest_x >= 0 && dest_y >= 0, NULL);
- g_return_val_if_fail (dest_x + width <= dest->width, NULL);
- g_return_val_if_fail (dest_y + height <= dest->height, NULL);
- }
-
- if (!GDK_IS_PIXMAP (src)) {
- int ret;
- int src_xorigin, src_yorigin;
- int screen_width, screen_height;
- int screen_srcx, screen_srcy;
-
- ret = gdk_window_get_origin (src, &src_xorigin, &src_yorigin);
- g_return_val_if_fail (ret != FALSE, NULL);
-
- screen_width = gdk_screen_width ();
- screen_height = gdk_screen_height ();
-
- screen_srcx = src_xorigin + src_x;
- screen_srcy = src_yorigin + src_y;
-
- g_return_val_if_fail (screen_srcx >= 0 && screen_srcy >= 0, NULL);
- g_return_val_if_fail (screen_srcx + width <= screen_width, NULL);
- g_return_val_if_fail (screen_srcy + height <= screen_height, NULL);
- }
-
- /* Get Image in ZPixmap format (packed bits). */
- image = gdk_image_get (src, src_x, src_y, width, height);
- g_return_val_if_fail (image != NULL, NULL);
-
- /* Create the pixbuf if needed */
- if (!dest) {
- dest = gdk_pixbuf_new (GDK_COLORSPACE_RGB, FALSE, 8, width, height);
- if (!dest) {
- gdk_image_destroy(image);
- return NULL;
- }
+ int src_width, src_height;
+ GdkImage *image;
+ int rowstride, bpp, alpha;
+
+ /* General sanity checks */
+
+ g_return_val_if_fail (src != NULL, NULL);
+
+ if (GDK_IS_PIXMAP (src))
+ g_return_val_if_fail (cmap != NULL, NULL);
+ else
+ /* FIXME: this is not perfect, since is_viewable() only tests
+ * recursively up the Gdk parent window tree, but stops at
+ * foreign windows or Gdk toplevels. I.e. if a window manager
+ * unmapped one of its own windows, this won't work.
+ */
+ g_return_val_if_fail (gdk_window_is_viewable (src), NULL);
+
+ if (!dest)
+ g_return_val_if_fail (dest_x == 0 && dest_y == 0, NULL);
+ else
+ {
+ g_return_val_if_fail (dest->colorspace == GDK_COLORSPACE_RGB, NULL);
+ g_return_val_if_fail (dest->n_channels == 3 || dest->n_channels == 4, NULL);
+ g_return_val_if_fail (dest->bits_per_sample == 8, NULL);
+ }
+
+ /* Coordinate sanity checks */
+
+ gdk_drawable_get_size (src, &src_width, &src_height);
+
+ g_return_val_if_fail (src_x >= 0 && src_y >= 0, NULL);
+ g_return_val_if_fail (src_x + width <= src_width && src_y + height <= src_height, NULL);
+
+ if (dest)
+ {
+ g_return_val_if_fail (dest_x >= 0 && dest_y >= 0, NULL);
+ g_return_val_if_fail (dest_x + width <= dest->width, NULL);
+ g_return_val_if_fail (dest_y + height <= dest->height, NULL);
+ }
+
+ if (!GDK_IS_PIXMAP (src))
+ {
+ int ret;
+ int src_xorigin, src_yorigin;
+ int screen_width, screen_height;
+ int screen_srcx, screen_srcy;
+
+ ret = gdk_window_get_origin (src, &src_xorigin, &src_yorigin);
+ g_return_val_if_fail (ret != FALSE, NULL);
+
+ screen_width = gdk_screen_width ();
+ screen_height = gdk_screen_height ();
+
+ screen_srcx = src_xorigin + src_x;
+ screen_srcy = src_yorigin + src_y;
+
+ g_return_val_if_fail (screen_srcx >= 0 && screen_srcy >= 0, NULL);
+ g_return_val_if_fail (screen_srcx + width <= screen_width, NULL);
+ g_return_val_if_fail (screen_srcy + height <= screen_height, NULL);
+ }
+
+ /* Get Image in ZPixmap format (packed bits). */
+ image = gdk_image_get (src, src_x, src_y, width, height);
+ g_return_val_if_fail (image != NULL, NULL);
+
+ /* Create the pixbuf if needed */
+ if (!dest)
+ {
+ dest = gdk_pixbuf_new (GDK_COLORSPACE_RGB, FALSE, 8, width, height);
+ if (!dest)
+ {
+ gdk_image_destroy(image);
+ return NULL;
}
+ }
- /* Get the colormap if needed */
- if (!GDK_IS_PIXMAP (src))
- cmap = gdk_window_get_colormap (src);
+ /* Get the colormap if needed */
+ if (!GDK_IS_PIXMAP (src))
+ cmap = gdk_window_get_colormap (src);
- alpha = dest->has_alpha;
- rowstride = dest->rowstride;
- bpp = alpha ? 4 : 3;
+ alpha = dest->has_alpha;
+ rowstride = dest->rowstride;
+ bpp = alpha ? 4 : 3;
- /* we offset into the image data based on the position we are retrieving from */
- rgbconvert (image, dest->pixels +
- (dest_y * rowstride) + (dest_x * bpp),
- rowstride,
- alpha,
- cmap);
+ /* we offset into the image data based on the position we are retrieving from */
+ rgbconvert (image, dest->pixels +
+ (dest_y * rowstride) + (dest_x * bpp),
+ rowstride,
+ alpha,
+ cmap);
- gdk_image_destroy(image);
+ gdk_image_destroy(image);
- return dest;
+ return dest;
}
*
**/
void
-gdk_pixbuf_render_threshold_alpha (GdkPixbuf *pixbuf, GdkBitmap *bitmap,
- int src_x, int src_y,
+gdk_pixbuf_render_threshold_alpha (GdkPixbuf *pixbuf,
+ GdkBitmap *bitmap,
+ int src_x, int src_y,
int dest_x, int dest_y,
- int width, int height,
+ int width, int height,
int alpha_threshold)
{
- GdkGC *gc;
- GdkColor color;
- int x, y;
- guchar *p;
- int start, start_status;
- int status;
-
- g_return_if_fail (pixbuf != NULL);
- g_return_if_fail (pixbuf->colorspace == GDK_COLORSPACE_RGB);
- g_return_if_fail (pixbuf->n_channels == 3 || pixbuf->n_channels == 4);
- g_return_if_fail (pixbuf->bits_per_sample == 8);
-
- g_return_if_fail (bitmap != NULL);
- g_return_if_fail (width >= 0 && height >= 0);
- g_return_if_fail (src_x >= 0 && src_x + width <= pixbuf->width);
- g_return_if_fail (src_y >= 0 && src_y + height <= pixbuf->height);
-
- g_return_if_fail (alpha_threshold >= 0 && alpha_threshold <= 255);
-
- if (width == 0 || height == 0)
- return;
-
- gc = gdk_gc_new (bitmap);
-
- if (!pixbuf->has_alpha) {
- color.pixel = (alpha_threshold == 255) ? 0 : 1;
- gdk_gc_set_foreground (gc, &color);
- gdk_draw_rectangle (bitmap, gc, TRUE, dest_x, dest_y, width, height);
- gdk_gc_unref (gc);
- return;
+ GdkGC *gc;
+ GdkColor color;
+ int x, y;
+ guchar *p;
+ int start, start_status;
+ int status;
+
+ g_return_if_fail (pixbuf != NULL);
+ g_return_if_fail (pixbuf->colorspace == GDK_COLORSPACE_RGB);
+ g_return_if_fail (pixbuf->n_channels == 3 || pixbuf->n_channels == 4);
+ g_return_if_fail (pixbuf->bits_per_sample == 8);
+
+ g_return_if_fail (bitmap != NULL);
+ g_return_if_fail (width >= 0 && height >= 0);
+ g_return_if_fail (src_x >= 0 && src_x + width <= pixbuf->width);
+ g_return_if_fail (src_y >= 0 && src_y + height <= pixbuf->height);
+
+ g_return_if_fail (alpha_threshold >= 0 && alpha_threshold <= 255);
+
+ if (width == 0 || height == 0)
+ return;
+
+ gc = gdk_gc_new (bitmap);
+
+ if (!pixbuf->has_alpha)
+ {
+ color.pixel = (alpha_threshold == 255) ? 0 : 1;
+ gdk_gc_set_foreground (gc, &color);
+ gdk_draw_rectangle (bitmap, gc, TRUE, dest_x, dest_y, width, height);
+ gdk_gc_unref (gc);
+ return;
+ }
+
+ color.pixel = 0;
+ gdk_gc_set_foreground (gc, &color);
+ gdk_draw_rectangle (bitmap, gc, TRUE, dest_x, dest_y, width, height);
+
+ color.pixel = 1;
+ gdk_gc_set_foreground (gc, &color);
+
+ for (y = 0; y < height; y++)
+ {
+ p = (pixbuf->pixels + (y + src_y) * pixbuf->rowstride + src_x * pixbuf->n_channels
+ + pixbuf->n_channels - 1);
+
+ start = 0;
+ start_status = *p < alpha_threshold;
+
+ for (x = 0; x < width; x++)
+ {
+ status = *p < alpha_threshold;
+
+ if (status != start_status)
+ {
+ if (!start_status)
+ gdk_draw_line (bitmap, gc,
+ start + dest_x, y + dest_y,
+ x - 1 + dest_x, y + dest_y);
+
+ start = x;
+ start_status = status;
+ }
+
+ p += pixbuf->n_channels;
}
-
- color.pixel = 0;
- gdk_gc_set_foreground (gc, &color);
- gdk_draw_rectangle (bitmap, gc, TRUE, dest_x, dest_y, width, height);
-
- color.pixel = 1;
- gdk_gc_set_foreground (gc, &color);
-
- for (y = 0; y < height; y++) {
- p = (pixbuf->pixels + (y + src_y) * pixbuf->rowstride + src_x * pixbuf->n_channels
- + pixbuf->n_channels - 1);
-
- start = 0;
- start_status = *p < alpha_threshold;
-
- for (x = 0; x < width; x++) {
- status = *p < alpha_threshold;
-
- if (status != start_status) {
- if (!start_status)
- gdk_draw_line (bitmap, gc,
- start + dest_x, y + dest_y,
- x - 1 + dest_x, y + dest_y);
-
- start = x;
- start_status = status;
- }
-
- p += pixbuf->n_channels;
- }
-
- if (!start_status)
- gdk_draw_line (bitmap, gc,
- start + dest_x, y + dest_y,
- x - 1 + dest_x, y + dest_y);
- }
-
- gdk_gc_unref (gc);
+
+ if (!start_status)
+ gdk_draw_line (bitmap, gc,
+ start + dest_x, y + dest_y,
+ x - 1 + dest_x, y + dest_y);
+ }
+
+ gdk_gc_unref (gc);
}
\f
/* Creates a buffer by stripping the alpha channel of a pixbuf */
static guchar *
-remove_alpha (GdkPixbuf *pixbuf, int x, int y, int width, int height, int *rowstride)
+remove_alpha (GdkPixbuf *pixbuf,
+ int x, int y,
+ int width, int height,
+ int *rowstride)
{
- guchar *buf;
- int xx, yy;
- guchar *src, *dest;
-
- g_assert (pixbuf->n_channels == 4);
- g_assert (pixbuf->has_alpha);
- g_assert (width > 0 && height > 0);
- g_assert (x >= 0 && x + width <= pixbuf->width);
- g_assert (y >= 0 && y + height <= pixbuf->height);
-
- *rowstride = 4 * ((width * 3 + 3) / 4);
-
- buf = g_new (guchar, *rowstride * height);
-
- for (yy = 0; yy < height; yy++) {
- src = pixbuf->pixels + pixbuf->rowstride * (yy + y) + x * pixbuf->n_channels;
- dest = buf + *rowstride * yy;
-
- for (xx = 0; xx < width; xx++) {
- *dest++ = *src++;
- *dest++ = *src++;
- *dest++ = *src++;
- src++;
- }
+ guchar *buf;
+ int xx, yy;
+ guchar *src, *dest;
+
+ g_assert (pixbuf->n_channels == 4);
+ g_assert (pixbuf->has_alpha);
+ g_assert (width > 0 && height > 0);
+ g_assert (x >= 0 && x + width <= pixbuf->width);
+ g_assert (y >= 0 && y + height <= pixbuf->height);
+
+ *rowstride = 4 * ((width * 3 + 3) / 4);
+
+ buf = g_new (guchar, *rowstride * height);
+
+ for (yy = 0; yy < height; yy++)
+ {
+ src = pixbuf->pixels + pixbuf->rowstride * (yy + y) + x * pixbuf->n_channels;
+ dest = buf + *rowstride * yy;
+
+ for (xx = 0; xx < width; xx++)
+ {
+ *dest++ = *src++;
+ *dest++ = *src++;
+ *dest++ = *src++;
+ src++;
}
-
- return buf;
+ }
+
+ return buf;
}
/**
* dither offsets can be both zero.
**/
void
-gdk_pixbuf_render_to_drawable (GdkPixbuf *pixbuf,
- GdkDrawable *drawable, GdkGC *gc,
- int src_x, int src_y,
- int dest_x, int dest_y,
- int width, int height,
+gdk_pixbuf_render_to_drawable (GdkPixbuf *pixbuf,
+ GdkDrawable *drawable,
+ GdkGC *gc,
+ int src_x, int src_y,
+ int dest_x, int dest_y,
+ int width, int height,
GdkRgbDither dither,
int x_dither, int y_dither)
{
- guchar *buf;
- int rowstride;
-
- g_return_if_fail (pixbuf != NULL);
- g_return_if_fail (pixbuf->colorspace == GDK_COLORSPACE_RGB);
- g_return_if_fail (pixbuf->n_channels == 3 || pixbuf->n_channels == 4);
- g_return_if_fail (pixbuf->bits_per_sample == 8);
-
- g_return_if_fail (drawable != NULL);
- g_return_if_fail (gc != NULL);
-
- g_return_if_fail (width >= 0 && height >= 0);
- g_return_if_fail (src_x >= 0 && src_x + width <= pixbuf->width);
- g_return_if_fail (src_y >= 0 && src_y + height <= pixbuf->height);
-
- if (width == 0 || height == 0)
- return;
-
- /* This will have to be modified once we support other image types.
- * Also, GdkRGB does not have gdk_draw_rgb_32_image_dithalign(), so we
- * have to pack the buffer first. Sigh.
- */
-
- if (pixbuf->has_alpha)
- buf = remove_alpha (pixbuf, src_x, src_y, width, height, &rowstride);
- else {
- buf = pixbuf->pixels + src_y * pixbuf->rowstride + src_x * 3;
- rowstride = pixbuf->rowstride;
- }
-
- gdk_draw_rgb_image_dithalign (drawable, gc,
- dest_x, dest_y,
- width, height,
- dither,
- buf, rowstride,
- x_dither, y_dither);
-
- if (pixbuf->has_alpha)
- g_free (buf);
+ guchar *buf;
+ int rowstride;
+
+ g_return_if_fail (pixbuf != NULL);
+ g_return_if_fail (pixbuf->colorspace == GDK_COLORSPACE_RGB);
+ g_return_if_fail (pixbuf->n_channels == 3 || pixbuf->n_channels == 4);
+ g_return_if_fail (pixbuf->bits_per_sample == 8);
+
+ g_return_if_fail (drawable != NULL);
+ g_return_if_fail (gc != NULL);
+
+ g_return_if_fail (width >= 0 && height >= 0);
+ g_return_if_fail (src_x >= 0 && src_x + width <= pixbuf->width);
+ g_return_if_fail (src_y >= 0 && src_y + height <= pixbuf->height);
+
+ if (width == 0 || height == 0)
+ return;
+
+ /* This will have to be modified once we support other image types.
+ * Also, GdkRGB does not have gdk_draw_rgb_32_image_dithalign(), so we
+ * have to pack the buffer first. Sigh.
+ */
+
+ if (pixbuf->has_alpha)
+ buf = remove_alpha (pixbuf, src_x, src_y, width, height, &rowstride);
+ else
+ {
+ buf = pixbuf->pixels + src_y * pixbuf->rowstride + src_x * 3;
+ rowstride = pixbuf->rowstride;
+ }
+
+ gdk_draw_rgb_image_dithalign (drawable, gc,
+ dest_x, dest_y,
+ width, height,
+ dither,
+ buf, rowstride,
+ x_dither, y_dither);
+
+ if (pixbuf->has_alpha)
+ g_free (buf);
}
\f
* using gdk_pixbuf_render_to_drawable() or GdkRGB directly instead.
**/
void
-gdk_pixbuf_render_to_drawable_alpha (GdkPixbuf *pixbuf, GdkDrawable *drawable,
- int src_x, int src_y,
- int dest_x, int dest_y,
- int width, int height,
+gdk_pixbuf_render_to_drawable_alpha (GdkPixbuf *pixbuf,
+ GdkDrawable *drawable,
+ int src_x, int src_y,
+ int dest_x, int dest_y,
+ int width, int height,
GdkPixbufAlphaMode alpha_mode,
- int alpha_threshold,
- GdkRgbDither dither,
+ int alpha_threshold,
+ GdkRgbDither dither,
int x_dither, int y_dither)
{
- GdkBitmap *bitmap = NULL;
- GdkGC *gc;
-
- g_return_if_fail (pixbuf != NULL);
- g_return_if_fail (pixbuf->colorspace == GDK_COLORSPACE_RGB);
- g_return_if_fail (pixbuf->n_channels == 3 || pixbuf->n_channels == 4);
- g_return_if_fail (pixbuf->bits_per_sample == 8);
-
- g_return_if_fail (drawable != NULL);
- g_return_if_fail (width >= 0 && height >= 0);
- g_return_if_fail (src_x >= 0 && src_x + width <= pixbuf->width);
- g_return_if_fail (src_y >= 0 && src_y + height <= pixbuf->height);
-
- if (width == 0 || height == 0)
- return;
-
- gc = gdk_gc_new (drawable);
-
- if (pixbuf->has_alpha) {
- /* Right now we only support GDK_PIXBUF_ALPHA_BILEVEL, so we
- * unconditionally create the clipping mask.
- */
-
- bitmap = gdk_pixmap_new (NULL, width, height, 1);
- gdk_pixbuf_render_threshold_alpha (pixbuf, bitmap,
- src_x, src_y,
- 0, 0,
- width, height,
- alpha_threshold);
-
- gdk_gc_set_clip_mask (gc, bitmap);
- gdk_gc_set_clip_origin (gc, dest_x, dest_y);
- }
-
- gdk_pixbuf_render_to_drawable (pixbuf, drawable, gc,
- src_x, src_y,
- dest_x, dest_y,
- width, height,
- dither,
- x_dither, y_dither);
-
- if (bitmap)
- gdk_bitmap_unref (bitmap);
-
- gdk_gc_unref (gc);
+ GdkBitmap *bitmap = NULL;
+ GdkGC *gc;
+
+ g_return_if_fail (pixbuf != NULL);
+ g_return_if_fail (pixbuf->colorspace == GDK_COLORSPACE_RGB);
+ g_return_if_fail (pixbuf->n_channels == 3 || pixbuf->n_channels == 4);
+ g_return_if_fail (pixbuf->bits_per_sample == 8);
+
+ g_return_if_fail (drawable != NULL);
+ g_return_if_fail (width >= 0 && height >= 0);
+ g_return_if_fail (src_x >= 0 && src_x + width <= pixbuf->width);
+ g_return_if_fail (src_y >= 0 && src_y + height <= pixbuf->height);
+
+ if (width == 0 || height == 0)
+ return;
+
+ gc = gdk_gc_new (drawable);
+
+ if (pixbuf->has_alpha)
+ {
+ /* Right now we only support GDK_PIXBUF_ALPHA_BILEVEL, so we
+ * unconditionally create the clipping mask.
+ */
+
+ bitmap = gdk_pixmap_new (NULL, width, height, 1);
+ gdk_pixbuf_render_threshold_alpha (pixbuf, bitmap,
+ src_x, src_y,
+ 0, 0,
+ width, height,
+ alpha_threshold);
+
+ gdk_gc_set_clip_mask (gc, bitmap);
+ gdk_gc_set_clip_origin (gc, dest_x, dest_y);
+ }
+
+ gdk_pixbuf_render_to_drawable (pixbuf, drawable, gc,
+ src_x, src_y,
+ dest_x, dest_y,
+ width, height,
+ dither,
+ x_dither, y_dither);
+
+ if (bitmap)
+ gdk_bitmap_unref (bitmap);
+
+ gdk_gc_unref (gc);
}
/**
* to NULL.
**/
void
-gdk_pixbuf_render_pixmap_and_mask (GdkPixbuf *pixbuf,
- GdkPixmap **pixmap_return, GdkBitmap **mask_return,
- int alpha_threshold)
+gdk_pixbuf_render_pixmap_and_mask (GdkPixbuf *pixbuf,
+ GdkPixmap **pixmap_return,
+ GdkBitmap **mask_return,
+ int alpha_threshold)
{
- g_return_if_fail (pixbuf != NULL);
-
- if (pixmap_return) {
- GdkGC *gc;
-
- *pixmap_return = gdk_pixmap_new (NULL, pixbuf->width, pixbuf->height,
- gdk_rgb_get_visual ()->depth);
- gc = gdk_gc_new (*pixmap_return);
- gdk_pixbuf_render_to_drawable (pixbuf, *pixmap_return, gc,
- 0, 0, 0, 0,
- pixbuf->width, pixbuf->height,
- GDK_RGB_DITHER_NORMAL,
- 0, 0);
- gdk_gc_unref (gc);
- }
-
- if (mask_return) {
- if (pixbuf->has_alpha) {
- *mask_return = gdk_pixmap_new (NULL, pixbuf->width, pixbuf->height, 1);
- gdk_pixbuf_render_threshold_alpha (pixbuf, *mask_return,
- 0, 0, 0, 0,
- pixbuf->width, pixbuf->height,
- alpha_threshold);
- } else
- *mask_return = NULL;
+ g_return_if_fail (pixbuf != NULL);
+
+ if (pixmap_return)
+ {
+ GdkGC *gc;
+
+ *pixmap_return = gdk_pixmap_new (NULL, pixbuf->width, pixbuf->height,
+ gdk_rgb_get_visual ()->depth);
+ gc = gdk_gc_new (*pixmap_return);
+ gdk_pixbuf_render_to_drawable (pixbuf, *pixmap_return, gc,
+ 0, 0, 0, 0,
+ pixbuf->width, pixbuf->height,
+ GDK_RGB_DITHER_NORMAL,
+ 0, 0);
+ gdk_gc_unref (gc);
+ }
+
+ if (mask_return)
+ {
+ if (pixbuf->has_alpha)
+ {
+ *mask_return = gdk_pixmap_new (NULL, pixbuf->width, pixbuf->height, 1);
+ gdk_pixbuf_render_threshold_alpha (pixbuf, *mask_return,
+ 0, 0, 0, 0,
+ pixbuf->width, pixbuf->height,
+ alpha_threshold);
}
+ else
+ *mask_return = NULL;
+ }
}
projects / gtk4.git / commitdiff