ReactOS 0.4.15-dev-7704-gc07eb9f
gxvmorx1.c
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1/***************************************************************************/
2/* */
3/* gxvmorx1.c */
4/* */
5/* TrueTypeGX/AAT morx table validation */
6/* body for type1 (Contextual Substitution) subtable. */
7/* */
8/* Copyright 2005-2018 by */
9/* suzuki toshiya, Masatake YAMATO, Red Hat K.K., */
10/* David Turner, Robert Wilhelm, and Werner Lemberg. */
11/* */
12/* This file is part of the FreeType project, and may only be used, */
13/* modified, and distributed under the terms of the FreeType project */
14/* license, LICENSE.TXT. By continuing to use, modify, or distribute */
15/* this file you indicate that you have read the license and */
16/* understand and accept it fully. */
17/* */
18/***************************************************************************/
19
20/***************************************************************************/
21/* */
22/* gxvalid is derived from both gxlayout module and otvalid module. */
23/* Development of gxlayout is supported by the Information-technology */
24/* Promotion Agency(IPA), Japan. */
25/* */
26/***************************************************************************/
27
28
29#include "gxvmorx.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_gxvmorx
40
41
43 {
47
50
51
52#define GXV_MORX_SUBTABLE_TYPE1_HEADER_SIZE \
53 ( GXV_STATETABLE_HEADER_SIZE + 2 )
54
55
56 static void
59 GXV_Validator gxvalid )
60 {
62
65
66
67 GXV_LIMIT_CHECK( 2 );
69 }
70
71
72 static void
74 FT_ULong classTable,
75 FT_ULong stateArray,
76 FT_ULong entryTable,
77 FT_ULong* classTable_length_p,
78 FT_ULong* stateArray_length_p,
79 FT_ULong* entryTable_length_p,
80 GXV_Validator gxvalid )
81 {
82 FT_ULong o[4];
83 FT_ULong *l[4];
84 FT_ULong buff[5];
85
88
89
90 o[0] = classTable;
91 o[1] = stateArray;
92 o[2] = entryTable;
93 o[3] = optdata->substitutionTable;
94 l[0] = classTable_length_p;
95 l[1] = stateArray_length_p;
96 l[2] = entryTable_length_p;
97 l[3] = &(optdata->substitutionTable_length);
98
100 }
101
102
103 static void
107 GXV_StateTable_GlyphOffsetCPtr glyphOffset_p,
110 GXV_Validator gxvalid )
111 {
112#ifdef GXV_LOAD_TRACE_VARS
113 FT_UShort setMark;
114 FT_UShort dontAdvance;
115#endif
117 FT_Short markIndex;
118 FT_Short currentIndex;
119
122
123 FT_UNUSED( state );
124 FT_UNUSED( table );
125 FT_UNUSED( limit );
126
127
128#ifdef GXV_LOAD_TRACE_VARS
129 setMark = (FT_UShort)( ( flags >> 15 ) & 1 );
130 dontAdvance = (FT_UShort)( ( flags >> 14 ) & 1 );
131#endif
132
133 reserved = (FT_UShort)( flags & 0x3FFF );
134
135 markIndex = (FT_Short)( glyphOffset_p->ul >> 16 );
136 currentIndex = (FT_Short)( glyphOffset_p->ul );
137
138 GXV_TRACE(( " setMark=%01d dontAdvance=%01d\n",
139 setMark, dontAdvance ));
140
141 if ( 0 < reserved )
142 {
143 GXV_TRACE(( " non-zero bits found in reserved range\n" ));
145 }
146
147 GXV_TRACE(( "markIndex = %d, currentIndex = %d\n",
148 markIndex, currentIndex ));
149
150 if ( optdata->substitutionTable_num_lookupTables < markIndex + 1 )
152 (FT_UShort)( markIndex + 1 );
153
154 if ( optdata->substitutionTable_num_lookupTables < currentIndex + 1 )
156 (FT_UShort)( currentIndex + 1 );
157 }
158
159
160 static void
162 GXV_LookupValueCPtr value_p,
163 GXV_Validator gxvalid )
164 {
165 FT_UNUSED( glyph ); /* for the non-debugging case */
166
167 GXV_TRACE(( "morx subtable type1 subst.: %d -> %d\n", glyph, value_p->u ));
168
169 if ( value_p->u > gxvalid->face->num_glyphs )
171 }
172
173
176 FT_UShort relative_gindex,
177 GXV_LookupValueCPtr base_value_p,
178 FT_Bytes lookuptbl_limit,
179 GXV_Validator gxvalid )
180 {
181 FT_Bytes p;
185
186 /* XXX: check range? */
187 offset = (FT_UShort)( base_value_p->u +
188 relative_gindex * sizeof ( FT_UShort ) );
189
190 p = gxvalid->lookuptbl_head + offset;
191 limit = lookuptbl_limit;
192
193 GXV_LIMIT_CHECK ( 2 );
194 value.u = FT_NEXT_USHORT( p );
195
196 return value;
197 }
198
199
200 /*
201 * TODO: length should be limit?
202 **/
203 static void
206 GXV_Validator gxvalid )
207 {
208 FT_Bytes p = table;
209 FT_UShort i;
210
213
214
215 /* TODO: calculate offset/length for each lookupTables */
219
220 for ( i = 0; i < optdata->substitutionTable_num_lookupTables; i++ )
221 {
223
224
225 GXV_LIMIT_CHECK( 4 );
227
229 }
230
231 /* TODO: overlapping of lookupTables in substitutionTable */
232 }
233
234
235 /*
236 * subtable for Contextual glyph substitution is a modified StateTable.
237 * In addition to classTable, stateArray, entryTable, the field
238 * `substitutionTable' is added.
239 */
240 FT_LOCAL_DEF( void )
243 GXV_Validator gxvalid )
244 {
245 FT_Bytes p = table;
246
248
249
250 GXV_NAME_ENTER( "morx chain subtable type1 (Contextual Glyph Subst)" );
251
253
255
256 gxvalid->xstatetable.optdata =
257 &st_rec;
258 gxvalid->xstatetable.optdata_load_func =
260 gxvalid->xstatetable.subtable_setup_func =
262 gxvalid->xstatetable.entry_glyphoffset_fmt =
264 gxvalid->xstatetable.entry_validate_func =
266
267 gxv_XStateTable_validate( p, limit, gxvalid );
268
270 table + st_rec.substitutionTable,
272 gxvalid );
273
274 GXV_EXIT;
275 }
276
277
278/* END */
static int state
Definition: maze.c:121
r l[0]
Definition: byte_order.h:168
r reserved
Definition: btrfs.c:3006
static unsigned char buff[32768]
Definition: fatten.c:17
#define FT_LOCAL_DEF(x)
Definition: ftconfig.h:388
#define FT_UNUSED(arg)
Definition: ftconfig.h:101
#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
signed short FT_Short
Definition: fttypes.h:198
const FT_Byte * FT_Bytes
Definition: fttypes.h:165
#define FT_INVALID_DATA
Definition: ftvalid.h:150
#define FT_INVALID_GLYPH_ID
Definition: ftvalid.h:146
GLint limit
Definition: glext.h:10326
GLbitfield flags
Definition: glext.h:7161
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
gxv_LookupTable_validate(FT_Bytes table, FT_Bytes limit, GXV_Validator gxvalid)
Definition: gxvcommn.c:755
gxv_set_length_by_ulong_offset(FT_ULong *offset, FT_ULong **length, FT_ULong *buff, FT_UInt nmemb, FT_ULong limit, GXV_Validator gxvalid)
Definition: gxvcommn.c:128
gxv_XStateTable_validate(FT_Bytes table, FT_Bytes limit, GXV_Validator gxvalid)
Definition: gxvcommn.c:1554
#define GXV_NAME_ENTER(name)
Definition: gxvcommn.h:301
#define GXV_SET_ERR_IF_PARANOID(err)
Definition: gxvcommn.h:66
@ GXV_LOOKUPVALUE_UNSIGNED
Definition: gxvcommn.h:100
#define GXV_TRACE(s)
Definition: gxvcommn.h:304
@ GXV_GLYPHOFFSET_ULONG
Definition: gxvcommn.h:127
#define GXV_EXIT
Definition: gxvcommn.h:302
#define GXV_LIMIT_CHECK(_count)
Definition: gxvcommn.h:272
static void gxv_morx_subtable_type1_LookupValue_validate(FT_UShort glyph, GXV_LookupValueCPtr value_p, GXV_Validator gxvalid)
Definition: gxvmorx1.c:161
#define GXV_MORX_SUBTABLE_TYPE1_HEADER_SIZE
Definition: gxvmorx1.c:52
static void gxv_morx_subtable_type1_entry_validate(FT_UShort state, FT_UShort flags, GXV_StateTable_GlyphOffsetCPtr glyphOffset_p, FT_Bytes table, FT_Bytes limit, GXV_Validator gxvalid)
Definition: gxvmorx1.c:104
struct GXV_morx_subtable_type1_StateOptRec_ * GXV_morx_subtable_type1_StateOptRecData
static void gxv_morx_subtable_type1_subtable_setup(FT_ULong table_size, FT_ULong classTable, FT_ULong stateArray, FT_ULong entryTable, FT_ULong *classTable_length_p, FT_ULong *stateArray_length_p, FT_ULong *entryTable_length_p, GXV_Validator gxvalid)
Definition: gxvmorx1.c:73
static GXV_LookupValueDesc gxv_morx_subtable_type1_LookupFmt4_transit(FT_UShort relative_gindex, GXV_LookupValueCPtr base_value_p, FT_Bytes lookuptbl_limit, GXV_Validator gxvalid)
Definition: gxvmorx1.c:175
struct GXV_morx_subtable_type1_StateOptRec_ GXV_morx_subtable_type1_StateOptRec
static void gxv_morx_subtable_type1_substitutionTable_load(FT_Bytes table, FT_Bytes limit, GXV_Validator gxvalid)
Definition: gxvmorx1.c:57
static void gxv_morx_subtable_type1_substitutionTable_validate(FT_Bytes table, FT_Bytes limit, GXV_Validator gxvalid)
Definition: gxvmorx1.c:204
gxv_morx_subtable_type1_validate(FT_Bytes table, FT_Bytes limit, GXV_Validator gxvalid)
Definition: gxvmorx1.c:241
#define for
Definition: utility.h:88
LOCAL int table_size
Definition: write.c:65
FT_Long num_glyphs
Definition: freetype.h:1076
GXV_XStateTable_ValidatorRec xstatetable
Definition: gxvcommn.h:255
GXV_Lookup_Fmt4_Transit_Func lookupfmt4_trans
Definition: gxvcommn.h:248
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
Definition: pdh_main.c:94
ActualNumberDriverObjects * sizeof(PDRIVER_OBJECT)) PDRIVER_OBJECT *DriverObjectList