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added Jens Thiele's bgr565 to rgb32 converter

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Original commit message from CVS:
added Jens Thiele's bgr565 to rgb32 converter
This commit is contained in:
Erik Walthinsen 2001-02-24 23:08:42 +00:00
parent c87e1f9b0c
commit 44be31b4f0
1 changed files with 36 additions and 0 deletions
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36
libs/colorspace/rgb2rgb.c
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@ -26,6 +26,7 @@ static void gst_colorspace_rgb_to_rgb_identity(GstColorSpaceConverter *space, un
static void gst_colorspace_rgb24_to_bgr24(GstColorSpaceConverter *space, unsigned char *src, unsigned char *dest);
static void gst_colorspace_rgb32_to_bgr32(GstColorSpaceConverter *space, unsigned char *src, unsigned char *dest);
static void gst_colorspace_rgb555_to_rgb565(GstColorSpaceConverter *space, unsigned char *src, unsigned char *dest);
static void gst_colorspace_bgr565_to_rgb32(GstColorSpaceConverter *space, unsigned char *src, unsigned char *dest);
GstColorSpaceConvertFunction gst_colorspace_rgb2rgb_get_converter(GstColorSpaceConverter *space, GstColorSpaceType src, GstColorSpaceType dest) {
switch(src) {
@ -93,6 +94,17 @@ GstColorSpaceConvertFunction gst_colorspace_rgb2rgb_get_converter(GstColorSpaceC
default:
break;
}
break;
case GST_COLORSPACE_BGR565:
space->insize = space->width*space->height*2;
switch(dest) {
case GST_COLORSPACE_RGB32 :
space->outsize = space->width*space->height*4;
return gst_colorspace_bgr565_to_rgb32;
default:
break;
};
break;
default:
break;
}
@ -183,3 +195,27 @@ static void gst_colorspace_rgb555_to_rgb565(GstColorSpaceConverter *space, unsig
}
}
}
static void gst_colorspace_bgr565_to_rgb32(GstColorSpaceConverter *space, unsigned char *src, unsigned char *dest)
{
gint size;
guint16 *srcptr = (guint16 *)src;
guint32 *destptr = (guint32 *)dest;
size = space->outsize >> 2;
g_assert (src != dest); /* todo */
while (size--) {
/* in detail I do this
red=(unsigned char)(*srcptr)&0x1f;
green=(unsigned char)(((*srcptr)&0x07E0)>>5);
blue=(unsigned char)(((*srcptr)&0xf800)>>11);
*destptr++ = (((guint32)blue) << 3)
| (((guint32)green) << (8+2))
| (((guint32)red) << (16+3));
*/
*destptr++ = (((*srcptr)&0xf800)>>8)|(((*srcptr)&0x07E0)<<5)|(((*srcptr)&0x1f)<<19);
srcptr++;
}
}