ReactOS 0.4.15-dev-7681-g776c3a3
gxvbsln.c
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1/***************************************************************************/
2/* */
3/* gxvbsln.c */
4/* */
5/* TrueTypeGX/AAT bsln table validation (body). */
6/* */
7/* Copyright 2004-2018 by */
8/* suzuki toshiya, Masatake YAMATO, Red Hat K.K., */
9/* David Turner, Robert Wilhelm, and Werner Lemberg. */
10/* */
11/* This file is part of the FreeType project, and may only be used, */
12/* modified, and distributed under the terms of the FreeType project */
13/* license, LICENSE.TXT. By continuing to use, modify, or distribute */
14/* this file you indicate that you have read the license and */
15/* understand and accept it fully. */
16/* */
17/***************************************************************************/
18
19/***************************************************************************/
20/* */
21/* gxvalid is derived from both gxlayout module and otvalid module. */
22/* Development of gxlayout is supported by the Information-technology */
23/* Promotion Agency(IPA), Japan. */
24/* */
25/***************************************************************************/
26
27
28#include "gxvalid.h"
29#include "gxvcommn.h"
30
31
32 /*************************************************************************/
33 /* */
34 /* The macro FT_COMPONENT is used in trace mode. It is an implicit */
35 /* parameter of the FT_TRACE() and FT_ERROR() macros, used to print/log */
36 /* messages during execution. */
37 /* */
38#undef FT_COMPONENT
39#define FT_COMPONENT trace_gxvbsln
40
41
42 /*************************************************************************/
43 /*************************************************************************/
44 /***** *****/
45 /***** Data and Types *****/
46 /***** *****/
47 /*************************************************************************/
48 /*************************************************************************/
49
50#define GXV_BSLN_VALUE_COUNT 32
51#define GXV_BSLN_VALUE_EMPTY 0xFFFFU
52
53
54 typedef struct GXV_bsln_DataRec_
55 {
58
60
61
62#define GXV_BSLN_DATA( field ) GXV_TABLE_DATA( bsln, field )
63
64
65 /*************************************************************************/
66 /*************************************************************************/
67 /***** *****/
68 /***** UTILITY FUNCTIONS *****/
69 /***** *****/
70 /*************************************************************************/
71 /*************************************************************************/
72
73 static void
75 GXV_LookupValueCPtr value_p,
76 GXV_Validator gxvalid )
77 {
78 FT_UShort v = value_p->u;
79 FT_UShort* ctlPoints;
80
81 FT_UNUSED( glyph );
82
83
84 GXV_NAME_ENTER( "lookup value" );
85
86 if ( v >= GXV_BSLN_VALUE_COUNT )
88
89 ctlPoints = (FT_UShort*)GXV_BSLN_DATA( ctlPoints_p );
90 if ( ctlPoints && ctlPoints[v] == GXV_BSLN_VALUE_EMPTY )
92
94 }
95
96
97 /*
98 +===============+ --------+
99 | lookup header | |
100 +===============+ |
101 | BinSrchHeader | |
102 +===============+ |
103 | lastGlyph[0] | |
104 +---------------+ |
105 | firstGlyph[0] | | head of lookup table
106 +---------------+ | +
107 | offset[0] | -> | offset [byte]
108 +===============+ | +
109 | lastGlyph[1] | | (glyphID - firstGlyph) * 2 [byte]
110 +---------------+ |
111 | firstGlyph[1] | |
112 +---------------+ |
113 | offset[1] | |
114 +===============+ |
115 |
116 ... |
117 |
118 16bit value array |
119 +===============+ |
120 | value | <-------+
121 ...
122 */
123
126 GXV_LookupValueCPtr base_value_p,
127 FT_Bytes lookuptbl_limit,
128 GXV_Validator gxvalid )
129 {
130 FT_Bytes p;
134
135 /* XXX: check range ? */
136 offset = (FT_UShort)( base_value_p->u +
137 ( relative_gindex * sizeof ( FT_UShort ) ) );
138
139 p = gxvalid->lookuptbl_head + offset;
140 limit = lookuptbl_limit;
141 GXV_LIMIT_CHECK( 2 );
142
143 value.u = FT_NEXT_USHORT( p );
144
145 return value;
146 }
147
148
149 static void
152 GXV_Validator gxvalid )
153 {
154 FT_Bytes p = tables;
155
156
157 GXV_NAME_ENTER( "parts format 0" );
158
159 /* deltas */
161
162 gxvalid->table_data = NULL; /* No ctlPoints here. */
163
164 GXV_EXIT;
165 }
166
167
168 static void
171 GXV_Validator gxvalid )
172 {
173 FT_Bytes p = tables;
174
175
176 GXV_NAME_ENTER( "parts format 1" );
177
178 /* deltas */
180
181 /* mappingData */
186 limit,
187 gxvalid );
188
189 GXV_EXIT;
190 }
191
192
193 static void
196 GXV_Validator gxvalid )
197 {
198 FT_Bytes p = tables;
199
200 FT_UShort stdGlyph;
201 FT_UShort ctlPoint;
202 FT_Int i;
203
204 FT_UShort defaultBaseline = GXV_BSLN_DATA( defaultBaseline );
205
206
207 GXV_NAME_ENTER( "parts format 2" );
208
210
211 /* stdGlyph */
212 stdGlyph = FT_NEXT_USHORT( p );
213 GXV_TRACE(( " (stdGlyph = %u)\n", stdGlyph ));
214
215 gxv_glyphid_validate( stdGlyph, gxvalid );
216
217 /* Record the position of ctlPoints */
218 GXV_BSLN_DATA( ctlPoints_p ) = p;
219
220 /* ctlPoints */
221 for ( i = 0; i < GXV_BSLN_VALUE_COUNT; i++ )
222 {
223 ctlPoint = FT_NEXT_USHORT( p );
224 if ( ctlPoint == GXV_BSLN_VALUE_EMPTY )
225 {
226 if ( i == defaultBaseline )
228 }
229 else
230 gxv_ctlPoint_validate( stdGlyph, ctlPoint, gxvalid );
231 }
232
233 GXV_EXIT;
234 }
235
236
237 static void
240 GXV_Validator gxvalid)
241 {
242 FT_Bytes p = tables;
243
244
245 GXV_NAME_ENTER( "parts format 3" );
246
247 /* stdGlyph + ctlPoints */
249
250 /* mappingData */
255 limit,
256 gxvalid );
257
258 GXV_EXIT;
259 }
260
261
262 /*************************************************************************/
263 /*************************************************************************/
264 /***** *****/
265 /***** bsln TABLE *****/
266 /***** *****/
267 /*************************************************************************/
268 /*************************************************************************/
269
270 FT_LOCAL_DEF( void )
273 FT_Validator ftvalid )
274 {
275 GXV_ValidatorRec gxvalidrec;
276 GXV_Validator gxvalid = &gxvalidrec;
277
278 GXV_bsln_DataRec bslnrec;
279 GXV_bsln_Data bsln = &bslnrec;
280
281 FT_Bytes p = table;
282 FT_Bytes limit = 0;
283
286 FT_UShort defaultBaseline;
287
288 GXV_Validate_Func fmt_funcs_table [] =
289 {
294 };
295
296
297 gxvalid->root = ftvalid;
298 gxvalid->table_data = bsln;
299 gxvalid->face = face;
300
301 FT_TRACE3(( "validating `bsln' table\n" ));
302 GXV_INIT;
303
304
305 GXV_LIMIT_CHECK( 4 + 2 + 2 );
308 defaultBaseline = FT_NEXT_USHORT( p );
309
310 /* only version 1.0 is defined (1996) */
311 if ( version != 0x00010000UL )
313
314 /* only format 1, 2, 3 are defined (1996) */
315 GXV_TRACE(( " (format = %d)\n", format ));
316 if ( format > 3 )
318
319 if ( defaultBaseline > 31 )
321
322 bsln->defaultBaseline = defaultBaseline;
323
324 fmt_funcs_table[format]( p, limit, gxvalid );
325
326 FT_TRACE4(( "\n" ));
327 }
328
329
330/* arch-tag: ebe81143-fdaa-4c68-a4d1-b57227daa3bc
331 (do not change this comment) */
332
333
334/* END */
#define NULL
Definition: types.h:112
WORD face[3]
Definition: mesh.c:4747
static const WCHAR version[]
Definition: asmname.c:66
struct nls_table * tables
Definition: nls_base.c:22
#define FT_LOCAL_DEF(x)
Definition: ftconfig.h:388
#define FT_UNUSED(arg)
Definition: ftconfig.h:101
#define FT_TRACE3(varformat)
Definition: ftdebug.h:160
#define FT_TRACE4(varformat)
Definition: ftdebug.h:161
#define FT_NEXT_USHORT(buffer)
Definition: ftstream.h:226
#define FT_NEXT_ULONG(buffer)
Definition: ftstream.h:238
unsigned long FT_ULong
Definition: fttypes.h:253
unsigned short FT_UShort
Definition: fttypes.h:209
const FT_Byte * FT_Bytes
Definition: fttypes.h:165
signed int FT_Int
Definition: fttypes.h:220
#define FT_INVALID_FORMAT
Definition: ftvalid.h:142
#define FT_INVALID_DATA
Definition: ftvalid.h:150
typedefFT_BEGIN_HEADER struct FT_ValidatorRec_ volatile * FT_Validator
Definition: ftvalid.h:42
const GLdouble * v
Definition: gl.h:2040
GLint GLint GLsizei GLsizei GLsizei GLint GLenum format
Definition: gl.h:1546
GLenum GLuint GLint GLenum face
Definition: glext.h:7025
GLint limit
Definition: glext.h:10326
GLfloat GLfloat p
Definition: glext.h:8902
GLintptr offset
Definition: glext.h:5920
GLsizei GLenum const GLvoid GLsizei GLenum GLbyte GLbyte GLbyte GLdouble GLdouble GLdouble GLfloat GLfloat GLfloat GLint GLint GLint GLshort GLshort GLshort GLubyte GLubyte GLubyte GLuint GLuint GLuint GLushort GLushort GLushort GLbyte GLbyte GLbyte GLbyte GLdouble GLdouble GLdouble GLdouble GLfloat GLfloat GLfloat GLfloat GLint GLint GLint GLint GLshort GLshort GLshort GLshort GLubyte GLubyte GLubyte GLubyte GLuint GLuint GLuint GLuint GLushort GLushort GLushort GLushort GLboolean const GLdouble const GLfloat const GLint const GLshort const GLbyte const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLdouble const GLfloat const GLfloat const GLint const GLint const GLshort const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort GLenum GLenum GLenum GLfloat GLenum GLint GLenum GLenum GLenum GLfloat GLenum GLenum GLint GLenum GLfloat GLenum GLint GLint GLushort GLenum GLenum GLfloat GLenum GLenum GLint GLfloat const GLubyte GLenum GLenum GLenum const GLfloat GLenum GLenum const GLint GLenum GLint GLint GLsizei GLsizei GLint GLenum GLenum const GLvoid GLenum GLenum const GLfloat GLenum GLenum const GLint GLenum GLenum const GLdouble GLenum GLenum const GLfloat GLenum GLenum const GLint GLsizei GLuint GLfloat GLuint GLbitfield GLfloat GLint GLuint GLboolean GLenum GLfloat GLenum GLbitfield GLenum GLfloat GLfloat GLint GLint const GLfloat GLenum GLfloat GLfloat GLint GLint GLfloat GLfloat GLint GLint const GLfloat GLint GLfloat GLfloat GLint GLfloat GLfloat GLint GLfloat GLfloat const GLdouble const GLfloat const GLdouble const GLfloat GLint i
Definition: glfuncs.h:248
static GXV_LookupValueDesc gxv_bsln_LookupFmt4_transit(FT_UShort relative_gindex, GXV_LookupValueCPtr base_value_p, FT_Bytes lookuptbl_limit, GXV_Validator gxvalid)
Definition: gxvbsln.c:125
#define GXV_BSLN_VALUE_EMPTY
Definition: gxvbsln.c:51
gxv_bsln_validate(FT_Bytes table, FT_Face face, FT_Validator ftvalid)
Definition: gxvbsln.c:271
struct GXV_bsln_DataRec_ * GXV_bsln_Data
static void gxv_bsln_parts_fmt1_validate(FT_Bytes tables, FT_Bytes limit, GXV_Validator gxvalid)
Definition: gxvbsln.c:169
#define GXV_BSLN_DATA(field)
Definition: gxvbsln.c:62
static void gxv_bsln_parts_fmt2_validate(FT_Bytes tables, FT_Bytes limit, GXV_Validator gxvalid)
Definition: gxvbsln.c:194
struct GXV_bsln_DataRec_ GXV_bsln_DataRec
static void gxv_bsln_parts_fmt0_validate(FT_Bytes tables, FT_Bytes limit, GXV_Validator gxvalid)
Definition: gxvbsln.c:150
static void gxv_bsln_parts_fmt3_validate(FT_Bytes tables, FT_Bytes limit, GXV_Validator gxvalid)
Definition: gxvbsln.c:238
#define GXV_BSLN_VALUE_COUNT
Definition: gxvbsln.c:50
static void gxv_bsln_LookupValue_validate(FT_UShort glyph, GXV_LookupValueCPtr value_p, GXV_Validator gxvalid)
Definition: gxvbsln.c:74
gxv_ctlPoint_validate(FT_UShort gid, FT_UShort ctl_point, GXV_Validator gxvalid)
Definition: gxvcommn.c:846
gxv_LookupTable_validate(FT_Bytes table, FT_Bytes limit, GXV_Validator gxvalid)
Definition: gxvcommn.c:755
gxv_glyphid_validate(FT_UShort gid, GXV_Validator gxvalid)
Definition: gxvcommn.c:813
void(* GXV_Validate_Func)(FT_Bytes table, FT_Bytes limit, GXV_Validator gxvalid)
Definition: gxvcommn.h:82
#define GXV_NAME_ENTER(name)
Definition: gxvcommn.h:301
@ GXV_LOOKUPVALUE_UNSIGNED
Definition: gxvcommn.h:100
#define GXV_TRACE(s)
Definition: gxvcommn.h:304
#define GXV_INIT
Definition: gxvcommn.h:300
#define GXV_EXIT
Definition: gxvcommn.h:302
#define GXV_LIMIT_CHECK(_count)
Definition: gxvcommn.h:272
GXV_Lookup_Fmt4_Transit_Func lookupfmt4_trans
Definition: gxvcommn.h:248
FT_Validator root
Definition: gxvcommn.h:239
void * table_data
Definition: gxvcommn.h:242
FT_Bytes lookuptbl_head
Definition: gxvcommn.h:249
GXV_Lookup_Value_Validate_Func lookupval_func
Definition: gxvcommn.h:247
GXV_LookupValue_SignSpec lookupval_sign
Definition: gxvcommn.h:246
FT_Bytes ctlPoints_p
Definition: gxvbsln.c:56
FT_UShort defaultBaseline
Definition: gxvbsln.c:57
Definition: pdh_main.c:94
ActualNumberDriverObjects * sizeof(PDRIVER_OBJECT)) PDRIVER_OBJECT *DriverObjectList