1/*
2 * Copyright 1990, 1991 Network Computing Devices;
3 * Portions Copyright 1987 by Digital Equipment Corporation
4 *
5 * Permission to use, copy, modify, distribute, and sell this software and its
6 * documentation for any purpose is hereby granted without fee, provided that
7 * the above copyright notice appear in all copies and that both that
8 * copyright notice and this permission notice appear in supporting
9 * documentation, and that the names of Network Computing Devices or Digital
10 * not be used in advertising or publicity pertaining to distribution of the
11 * software without specific, written prior permission. Network Computing
12 * Devices and Digital make no representations about the suitability of
13 * this software for any purpose.  It is provided "as is" without express
14 * or implied warranty.
15 *
16 * NETWORK COMPUTING DEVICES AND DIGITAL DISCLAIM ALL WARRANTIES WITH
17 * REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
18 * AND FITNESS, IN NO EVENT SHALL NETWORK COMPUTING DEVICES OR DIGITAL BE
19 * LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
20 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
21 * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
22 * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
23 */
24
25/*
26
27Copyright 1987, 1998  The Open Group
28
29Permission to use, copy, modify, distribute, and sell this software and its
30documentation for any purpose is hereby granted without fee, provided that
31the above copyright notice appear in all copies and that both that
32copyright notice and this permission notice appear in supporting
33documentation.
34
35The above copyright notice and this permission notice shall be included
36in all copies or substantial portions of the Software.
37
38THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
39OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
40MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
41IN NO EVENT SHALL THE OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR
42OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
43ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
44OTHER DEALINGS IN THE SOFTWARE.
45
46Except as contained in this notice, the name of The Open Group shall
47not be used in advertising or otherwise to promote the sale, use or
48other dealings in this Software without prior written authorization
49from The Open Group.
50
51*/
52
53#ifdef HAVE_CONFIG_H
54#include <config.h>
55#endif
56#include	<X11/fonts/FSproto.h>
57#include	<X11/fonts/font.h>
58#include	<X11/fonts/fontstruct.h>
59#include	<X11/fonts/fontutil.h>
60
61int
62CheckFSFormat(fsBitmapFormat format,
63	      fsBitmapFormatMask fmask,
64	      int *bit_order,
65	      int *byte_order,
66	      int *scan,
67	      int *glyph,
68	      int *image)
69{
70    /* convert format to what the low levels want */
71    if (fmask & BitmapFormatMaskBit) {
72	*bit_order = format & BitmapFormatBitOrderMask;
73	*bit_order = (*bit_order == BitmapFormatBitOrderMSB)
74	    	     ? MSBFirst : LSBFirst;
75    }
76    if (fmask & BitmapFormatMaskByte) {
77	*byte_order = format & BitmapFormatByteOrderMask;
78	*byte_order = (*byte_order == BitmapFormatByteOrderMSB)
79	    	      ? MSBFirst : LSBFirst;
80    }
81    if (fmask & BitmapFormatMaskScanLineUnit) {
82	*scan = format & BitmapFormatScanlineUnitMask;
83	/* convert byte paddings into byte counts */
84	switch (*scan) {
85	case BitmapFormatScanlineUnit8:
86	    *scan = 1;
87	    break;
88	case BitmapFormatScanlineUnit16:
89	    *scan = 2;
90	    break;
91	case BitmapFormatScanlineUnit32:
92	    *scan = 4;
93	    break;
94	default:
95	    return BadFontFormat;
96	}
97    }
98    if (fmask & BitmapFormatMaskScanLinePad) {
99	*glyph = format & BitmapFormatScanlinePadMask;
100	/* convert byte paddings into byte counts */
101	switch (*glyph) {
102	case BitmapFormatScanlinePad8:
103	    *glyph = 1;
104	    break;
105	case BitmapFormatScanlinePad16:
106	    *glyph = 2;
107	    break;
108	case BitmapFormatScanlinePad32:
109	    *glyph = 4;
110	    break;
111	default:
112	    return BadFontFormat;
113	}
114    }
115    if (fmask & BitmapFormatMaskImageRectangle) {
116	*image = format & BitmapFormatImageRectMask;
117
118	if (*image != BitmapFormatImageRectMin &&
119		*image != BitmapFormatImageRectMaxWidth &&
120		*image != BitmapFormatImageRectMax)
121	    return BadFontFormat;
122    }
123    return Successful;
124}
125