1 /*
2 * Copyright (c) 2003, 2013, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation. Oracle designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Oracle in the LICENSE file that accompanied this code.
10 *
11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
23 * questions.
24 */
25
26 #ifndef FontScalerDefsIncludesDefined
27 #define FontScalerDefsIncludesDefined
28
29 #include "AccelGlyphCache.h"
30
31 #ifdef __cplusplus
32 extern "C" {
33 #endif
34
35 #define kPosInfinity16 (32767)
36 #define kNegInfinity16 (-32768)
37
38 #define kPosInfinity32 (0x7fffffff)
39 #define kNegInfinity32 (0x80000000)
40
41
42 #ifdef _LP64
43 typedef unsigned int UInt32;
44 typedef int Int32;
45 #else
46 typedef unsigned long UInt32;
47 typedef long Int32;
48 #endif
49 typedef unsigned short UInt16;
50 typedef short Int16;
51 typedef unsigned char UInt8;
52
53 typedef UInt8 Byte;
54 typedef Int32 hsFixed;
55 typedef Int32 hsFract;
56 typedef UInt32 Bool32;
57
58 #ifndef __cplusplus
59 #ifndef false
60 #define false 0
61 #endif
62
63 #ifndef true
64 #define true 1
65 #endif
66 #endif
67
68 #define kPosInfinity32 (0x7fffffff)
69 #define kNegInfinity32 (0x80000000)
70
71 #define F26Dot6ToFixed(n) ((n) << 10)
72 #define F26Dot6ToScalar(n) (((t2kScalar)(n)) / (t2kScalar)64)
73
74 /* t2kFixed is the same as F16Dot16 format although T2K also uses 26.6 */
75 typedef Int32 t2kFixed;
76 typedef float t2kScalar;
77
78 #define t2kIntToFixed(x) ((t2kFixed)(x) << 16)
79 #define t2kFixedToInt(x) ((x) >> 16)
80
81 #define t2kFixedRound(x) (((x) + 0x8000) >> 16)
82 #define t2kFixed1 t2kIntToFixed(1)
83
84 #define t2kFloatToFixed(f) (t2kFixed)((f) * (float)(t2kFixed1))
85 #define t2kFixedToFloat(x) ((x) / (float)(65536))
86
87 #define t2kScalarAverage(a, b) (((a) + (b)) / (t2kScalar)(2))
88
89 /* managed: 1 means the glyph has a hardware cached
90 * copy, and its freeing is managed by the usual
91 * 2D disposer code.
92 * A value of 0 means its either unaccelerated (and so has no cellInfos)
93 * or we want to free this in a different way.
94 * The field uses previously unused padding, so doesn't enlarge
95 * the structure.
96 */
97 #define UNMANAGED_GLYPH 0
98 #define MANAGED_GLYPH 1
99 typedef struct GlyphInfo {
100 float advanceX;
101 float advanceY;
102 UInt16 width;
103 UInt16 height;
104 UInt16 rowBytes;
105 UInt8 managed;
106 float topLeftX;
107 float topLeftY;
108 void *cellInfo;
109 UInt8 *image;
110 } GlyphInfo;
111
112 /* We use fffe and ffff as meaning invisible glyphs which have no
113 * image, or advance and an empty outline.
114 * Since there are no valid glyphs with this great a value (watch out for
115 * large fonts in the future!) we can safely use check for >= this value
116 */
117 #define INVISIBLE_GLYPHS 0xfffe
118
119 #define GSUB_TAG 0x47535542 /* 'GSUB' */
120 #define GPOS_TAG 0x47504F53 /* 'GPOS' */
121 #define GDEF_TAG 0x47444546 /* 'GDEF' */
122 #define MORT_TAG 0x6D6F7274 /* 'mort' */
123 #define MORX_TAG 0x6D6F7278 /* 'morx' */
124 #define KERN_TAG 0x6B65726E /* 'kern' */
125
126 typedef struct TTLayoutTableCacheEntry {
127 const void* ptr;
128 int len;
129 } TTLayoutTableCacheEntry;
130
131 #define LAYOUTCACHE_ENTRIES 6
132
133 typedef struct TTLayoutTableCache {
134 TTLayoutTableCacheEntry entries[LAYOUTCACHE_ENTRIES];
135 void* kernPairs;
136 } TTLayoutTableCache;
137
138 #include "sunfontids.h"
139
140 JNIEXPORT extern TTLayoutTableCache* newLayoutTableCache();
141 JNIEXPORT extern void freeLayoutTableCache(TTLayoutTableCache* ltc);
142
143 /* If font is malformed then scaler context created by particular scaler
144 * will be replaced by null scaler context.
145 * Note that this context is not compatible with structure of the context
146 * object used by particular scaler. Therefore, before using context
147 * scaler has to check if it is NullContext.
148 *
149 * Note that in theory request with NullContext should not even reach native
150 * scaler.
151 *
152 * It seems that the only reason to support NullContext is to simplify
153 * FileFontStrike logic - presence of context is used as marker to
154 * free the memory.
155 */
156 JNIEXPORT int isNullScalerContext(void *context);
157
158 #ifdef __cplusplus
159 }
160 #endif
161
162 #endif