+ } else im->data = (gchar*) data;
+ break;
+ case 16:
+ for (y = 0; y < im->height; y++) {
+ for (x = 0; x < im->width; x++) {
+ r = (data[x] >> RrDefaultRedOffset) & 0xFF;
+ r = r >> RrRedShift(inst);
+ g = (data[x] >> RrDefaultGreenOffset) & 0xFF;
+ g = g >> RrGreenShift(inst);
+ b = (data[x] >> RrDefaultBlueOffset) & 0xFF;
+ b = b >> RrBlueShift(inst);
+ p16[x] = (r << RrRedOffset(inst))
+ + (g << RrGreenOffset(inst))
+ + (b << RrBlueOffset(inst));
+ }
+ data += im->width;
+ p16 += im->bytes_per_line/2;
+ }
+ break;
+ case 8:
+ if (RrVisual(inst)->class == TrueColor) {
+ for (y = 0; y < im->height; y++) {
+ for (x = 0; x < im->width; x++) {
+ r = (data[x] >> RrDefaultRedOffset) & 0xFF;
+ r = r >> RrRedShift(inst);
+ g = (data[x] >> RrDefaultGreenOffset) & 0xFF;
+ g = g >> RrGreenShift(inst);
+ b = (data[x] >> RrDefaultBlueOffset) & 0xFF;
+ b = b >> RrBlueShift(inst);
+ p8[x] = (r << RrRedOffset(inst))
+ + (g << RrGreenOffset(inst))
+ + (b << RrBlueOffset(inst));
+ }
+ data += im->width;
+ p8 += im->bytes_per_line;
+ }
+ } else {
+ for (y = 0; y < im->height; y++) {
+ for (x = 0; x < im->width; x++) {
+ p8[x] = RrPickColor(inst,
+ data[x] >> RrDefaultRedOffset,
+ data[x] >> RrDefaultGreenOffset,
+ data[x] >> RrDefaultBlueOffset)->pixel;
+ }
+ data += im->width;
+ p8 += im->bytes_per_line;
+ }
+ }
+ break;
+ default:
+ g_error("Your bit depth is currently unhandled\n");
+
+ }
+}
+
+XColor *RrPickColor(const RrInstance *inst, gint r, gint g, gint b)
+{
+ r = (r & 0xff) >> (8-RrPseudoBPC(inst));
+ g = (g & 0xff) >> (8-RrPseudoBPC(inst));
+ b = (b & 0xff) >> (8-RrPseudoBPC(inst));
+ return &RrPseudoColors(inst)[(r << (2*RrPseudoBPC(inst))) +
+ (g << (1*RrPseudoBPC(inst))) +
+ b];
+}
+
+static void swap_byte_order(XImage *im)
+{
+ gint x, y, di;
+
+ di = 0;
+ for (y = 0; y < im->height; ++y) {
+ for (x = 0; x < im->height; ++x) {
+ gchar *c = &im->data[di + x * im->bits_per_pixel / 8];
+ gchar t;
+
+ switch (im->bits_per_pixel) {
+ case 32:
+ t = c[2];
+ c[2] = c[3];
+ c[3] = t;
+ case 16:
+ t = c[0];
+ c[0] = c[1];
+ c[1] = t;
+ case 8:
+ case 1:
+ break;
+ default:
+ g_error("Your bit depth (%i) is currently unhandled",
+ im->bits_per_pixel);
+ }
+ }
+ di += im->bytes_per_line;
+ }
+
+ if (im->byte_order == LSBFirst)
+ im->byte_order = MSBFirst;
+ else
+ im->byte_order = LSBFirst;
+}
+
+void RrIncreaseDepth(const RrInstance *inst, RrPixel32 *data, XImage *im)
+{
+ gint r, g, b;
+ gint x,y;
+ RrPixel32 *p32 = (RrPixel32 *) im->data;
+ RrPixel16 *p16 = (RrPixel16 *) im->data;
+ guchar *p8 = (guchar *)im->data;
+
+ if (im->byte_order != LSBFirst)
+ swap_byte_order(im);
+
+ switch (im->bits_per_pixel) {
+ case 32:
+ for (y = 0; y < im->height; y++) {
+ for (x = 0; x < im->width; x++) {
+ r = (p32[x] >> RrRedOffset(inst)) & 0xff;
+ g = (p32[x] >> RrGreenOffset(inst)) & 0xff;
+ b = (p32[x] >> RrBlueOffset(inst)) & 0xff;
+ data[x] = (r << RrDefaultRedOffset)
+ + (g << RrDefaultGreenOffset)
+ + (b << RrDefaultBlueOffset)
+ + (0xff << RrDefaultAlphaOffset);
+ }
+ data += im->width;
+ p32 += im->bytes_per_line/4;