--- sourceforge.net/trunk/rdesktop/xwin.c	2004/03/13 12:08:18	636
+++ sourceforge.net/trunk/rdesktop/xwin.c	2004/04/15 20:12:42	651
@@ -43,7 +43,7 @@
 static int g_x_socket;
 static Screen *g_screen;
 Window g_wnd;
-uint32 g_embed_wnd;
+extern uint32 g_embed_wnd;
 BOOL g_enable_compose = False;
 static GC g_gc = NULL;
 static Visual *g_visual;
@@ -57,6 +57,7 @@
 static Atom g_protocol_atom, g_kill_atom;
 static BOOL g_focused;
 static BOOL g_mouse_in_wnd;
+static BOOL g_arch_match = False;	/* set to True if RGB XServer and little endian */
 
 /* endianness */
 static BOOL g_host_be;
@@ -65,7 +66,7 @@
 static int g_red_shift_l, g_blue_shift_l, g_green_shift_l;
 
 /* software backing store */
-BOOL g_ownbackstore = True;	/* We can't rely on external BackingStore */
+extern BOOL g_ownbackstore;
 static Pixmap g_backstore = 0;
 
 /* Moving in single app mode */
@@ -114,7 +115,7 @@
 }
 
 /* colour maps */
-BOOL g_owncolmap = False;
+extern BOOL g_owncolmap;
 static Colormap g_xcolmap;
 static uint32 *g_colmap = NULL;
 
@@ -240,17 +241,20 @@
 {
 	uint16 value;
 
-	while (out < end)
+	if (g_xserver_be)
 	{
-		value = (uint16) g_colmap[*(data++)];
-
-		if (g_xserver_be)
+		while (out < end)
 		{
+			value = (uint16) g_colmap[*(data++)];
 			*(out++) = value >> 8;
 			*(out++) = value;
 		}
-		else
+	}
+	else
+	{
+		while (out < end)
 		{
+			value = (uint16) g_colmap[*(data++)];
 			*(out++) = value;
 			*(out++) = value >> 8;
 		}
@@ -263,18 +267,21 @@
 {
 	uint32 value;
 
-	while (out < end)
+	if (g_xserver_be)
 	{
-		value = g_colmap[*(data++)];
-
-		if (g_xserver_be)
+		while (out < end)
 		{
+			value = g_colmap[*(data++)];
 			*(out++) = value >> 16;
 			*(out++) = value >> 8;
 			*(out++) = value;
 		}
-		else
+	}
+	else
+	{
+		while (out < end)
 		{
+			value = g_colmap[*(data++)];
 			*(out++) = value;
 			*(out++) = value >> 8;
 			*(out++) = value >> 16;
@@ -287,19 +294,22 @@
 {
 	uint32 value;
 
-	while (out < end)
+	if (g_xserver_be)
 	{
-		value = g_colmap[*(data++)];
-
-		if (g_xserver_be)
+		while (out < end)
 		{
+			value = g_colmap[*(data++)];
 			*(out++) = value >> 24;
 			*(out++) = value >> 16;
 			*(out++) = value >> 8;
 			*(out++) = value;
 		}
-		else
+	}
+	else
+	{
+		while (out < end)
 		{
+			value = g_colmap[*(data++)];
 			*(out++) = value;
 			*(out++) = value >> 8;
 			*(out++) = value >> 16;
@@ -588,9 +598,24 @@
 static uint8 *
 translate_image(int width, int height, uint8 * data)
 {
-	int size = width * height * g_bpp / 8;
-	uint8 *out = (uint8 *) xmalloc(size);
-	uint8 *end = out + size;
+	int size;
+	uint8 *out;
+	uint8 *end;
+
+	/* if server and xserver bpp match, */
+	/* and arch(endian) matches, no need to translate */
+	/* just return data */
+	if (g_arch_match)
+	{
+		if (g_depth == 15 && g_server_bpp == 15)
+			return data;
+		if (g_depth == 16 && g_server_bpp == 16)
+			return data;
+	}
+
+	size = width * height * (g_bpp / 8);
+	out = (uint8 *) xmalloc(size);
+	end = out + size;
 
 	switch (g_server_bpp)
 	{
@@ -728,6 +753,10 @@
 		TrueColorVisual = True;
 	}
 
+	test = 1;
+	g_host_be = !(BOOL) (*(uint8 *) (&test));
+	g_xserver_be = (ImageByteOrder(g_display) == MSBFirst);
+
 	if ((g_server_bpp == 8) && ((!TrueColorVisual) || (g_depth <= 8)))
 	{
 		/* we use a colourmap, so the default visual should do */
@@ -754,6 +783,11 @@
 		calculate_shifts(vi.red_mask, &g_red_shift_r, &g_red_shift_l);
 		calculate_shifts(vi.blue_mask, &g_blue_shift_r, &g_blue_shift_l);
 		calculate_shifts(vi.green_mask, &g_green_shift_r, &g_green_shift_l);
+
+		/* if RGB video and averything is little endian */
+		if (vi.red_mask > vi.green_mask && vi.green_mask > vi.blue_mask)
+			if (!g_xserver_be && !g_host_be)
+				g_arch_match = True;
 	}
 
 	pfm = XListPixmapFormats(g_display, &i);
@@ -793,10 +827,6 @@
 		g_ownbackstore = True;
 	}
 
-	test = 1;
-	g_host_be = !(BOOL) (*(uint8 *) (&test));
-	g_xserver_be = (ImageByteOrder(g_display) == MSBFirst);
-
 	/*
 	 * Determine desktop size
 	 */
@@ -926,10 +956,10 @@
 		XFree(sizehints);
 	}
 
-        if ( g_embed_wnd )
-        {
-                XReparentWindow(g_display, g_wnd, (Window)g_embed_wnd, 0, 0);
-        }
+	if (g_embed_wnd)
+	{
+		XReparentWindow(g_display, g_wnd, (Window) g_embed_wnd, 0, 0);
+	}
 
 	input_mask = KeyPressMask | KeyReleaseMask | ButtonPressMask | ButtonReleaseMask |
 		VisibilityChangeMask | FocusChangeMask;
@@ -1372,7 +1402,7 @@
 	XPutImage(g_display, bitmap, g_gc, image, 0, 0, 0, 0, width, height);
 
 	XFree(image);
-	if (!g_owncolmap)
+	if (tdata != data)
 		xfree(tdata);
 	return (HBITMAP) bitmap;
 }
@@ -1411,7 +1441,7 @@
 	}
 
 	XFree(image);
-	if (!g_owncolmap)
+	if (tdata != data)
 		xfree(tdata);
 }