David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 1 | /***************************************************************************/ |
| 2 | /* */ |
David Turner | 19ed8af | 2000-12-08 02:42:29 +0000 | [diff] [blame] | 3 | /* ttpload.c */ |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 4 | /* */ |
| 5 | /* TrueType glyph data/program tables loader (body). */ |
| 6 | /* */ |
Werner Lemberg | e793092 | 2005-03-01 02:13:50 +0000 | [diff] [blame^] | 7 | /* Copyright 1996-2001, 2002, 2004, 2005 by */ |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 8 | /* David Turner, Robert Wilhelm, and Werner Lemberg. */ |
| 9 | /* */ |
Werner Lemberg | 78575dc | 2000-06-12 19:36:41 +0000 | [diff] [blame] | 10 | /* This file is part of the FreeType project, and may only be used, */ |
| 11 | /* modified, and distributed under the terms of the FreeType project */ |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 12 | /* license, LICENSE.TXT. By continuing to use, modify, or distribute */ |
| 13 | /* this file you indicate that you have read the license and */ |
| 14 | /* understand and accept it fully. */ |
| 15 | /* */ |
| 16 | /***************************************************************************/ |
| 17 | |
Werner Lemberg | cc069be | 2000-12-08 16:17:16 +0000 | [diff] [blame] | 18 | |
David Turner | 19ed8af | 2000-12-08 02:42:29 +0000 | [diff] [blame] | 19 | #include <ft2build.h> |
| 20 | #include FT_INTERNAL_DEBUG_H |
| 21 | #include FT_INTERNAL_OBJECTS_H |
| 22 | #include FT_INTERNAL_STREAM_H |
| 23 | #include FT_TRUETYPE_TAGS_H |
Werner Lemberg | 1f7f0e8 | 2001-06-06 17:30:41 +0000 | [diff] [blame] | 24 | |
David Turner | 8d3a401 | 2001-03-20 11:14:24 +0000 | [diff] [blame] | 25 | #include "ttpload.h" |
Werner Lemberg | 1f7f0e8 | 2001-06-06 17:30:41 +0000 | [diff] [blame] | 26 | |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 27 | #ifdef TT_CONFIG_OPTION_GX_VAR_SUPPORT |
| 28 | #include "ttgxvar.h" |
| 29 | #endif |
| 30 | |
Werner Lemberg | 1f7f0e8 | 2001-06-06 17:30:41 +0000 | [diff] [blame] | 31 | #include "tterrors.h" |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 32 | |
Werner Lemberg | 78575dc | 2000-06-12 19:36:41 +0000 | [diff] [blame] | 33 | |
| 34 | /*************************************************************************/ |
| 35 | /* */ |
| 36 | /* The macro FT_COMPONENT is used in trace mode. It is an implicit */ |
| 37 | /* parameter of the FT_TRACE() and FT_ERROR() macros, used to print/log */ |
| 38 | /* messages during execution. */ |
| 39 | /* */ |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 40 | #undef FT_COMPONENT |
Werner Lemberg | 78575dc | 2000-06-12 19:36:41 +0000 | [diff] [blame] | 41 | #define FT_COMPONENT trace_ttpload |
| 42 | |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 43 | |
| 44 | /*************************************************************************/ |
| 45 | /* */ |
| 46 | /* <Function> */ |
David Turner | b08fe2d | 2002-08-27 20:20:29 +0000 | [diff] [blame] | 47 | /* tt_face_load_loca */ |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 48 | /* */ |
| 49 | /* <Description> */ |
| 50 | /* Loads the locations table. */ |
| 51 | /* */ |
Werner Lemberg | 78575dc | 2000-06-12 19:36:41 +0000 | [diff] [blame] | 52 | /* <InOut> */ |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 53 | /* face :: A handle to the target face object. */ |
Werner Lemberg | 78575dc | 2000-06-12 19:36:41 +0000 | [diff] [blame] | 54 | /* */ |
| 55 | /* <Input> */ |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 56 | /* stream :: The input stream. */ |
| 57 | /* */ |
| 58 | /* <Return> */ |
Werner Lemberg | 9ca2af3 | 2000-06-21 03:03:28 +0000 | [diff] [blame] | 59 | /* FreeType error code. 0 means success. */ |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 60 | /* */ |
David Turner | e70d553 | 2005-02-22 16:53:06 +0000 | [diff] [blame] | 61 | #ifdef FT_OPTIMIZE_MEMORY |
| 62 | |
| 63 | FT_LOCAL_DEF( FT_Error ) |
| 64 | tt_face_load_loca( TT_Face face, |
| 65 | FT_Stream stream ) |
| 66 | { |
| 67 | FT_Error error; |
| 68 | FT_Memory memory = stream->memory; |
| 69 | FT_ULong table_len; |
| 70 | |
| 71 | |
| 72 | FT_TRACE2(( "Locations " )); |
| 73 | error = face->goto_table( face, TTAG_loca, stream, &table_len ); |
| 74 | if ( error ) |
| 75 | { |
| 76 | error = TT_Err_Locations_Missing; |
| 77 | goto Exit; |
| 78 | } |
| 79 | |
| 80 | if ( face->header.Index_To_Loc_Format != 0 ) |
| 81 | { |
Werner Lemberg | e793092 | 2005-03-01 02:13:50 +0000 | [diff] [blame^] | 82 | if ( table_len >= 0x40000 ) |
David Turner | e70d553 | 2005-02-22 16:53:06 +0000 | [diff] [blame] | 83 | { |
Werner Lemberg | e793092 | 2005-03-01 02:13:50 +0000 | [diff] [blame^] | 84 | FT_TRACE2(( "table too large!\n" )); |
David Turner | e70d553 | 2005-02-22 16:53:06 +0000 | [diff] [blame] | 85 | error = TT_Err_Invalid_Table; |
| 86 | goto Exit; |
| 87 | } |
Werner Lemberg | e793092 | 2005-03-01 02:13:50 +0000 | [diff] [blame^] | 88 | face->num_locations = (FT_UInt)( table_len >> 2 ); |
David Turner | e70d553 | 2005-02-22 16:53:06 +0000 | [diff] [blame] | 89 | } |
| 90 | else |
| 91 | { |
| 92 | if ( table_len >= 0x20000 ) |
| 93 | { |
Werner Lemberg | e793092 | 2005-03-01 02:13:50 +0000 | [diff] [blame^] | 94 | FT_TRACE2(( "table too large!\n" )); |
David Turner | e70d553 | 2005-02-22 16:53:06 +0000 | [diff] [blame] | 95 | error = TT_Err_Invalid_Table; |
| 96 | goto Exit; |
| 97 | } |
Werner Lemberg | e793092 | 2005-03-01 02:13:50 +0000 | [diff] [blame^] | 98 | face->num_locations = (FT_UInt)( table_len >> 1 ); |
David Turner | e70d553 | 2005-02-22 16:53:06 +0000 | [diff] [blame] | 99 | } |
| 100 | |
Werner Lemberg | e793092 | 2005-03-01 02:13:50 +0000 | [diff] [blame^] | 101 | /* |
| 102 | * Extract the frame. We don't need to decompress it since |
| 103 | * we are able to parse it directly. |
| 104 | */ |
David Turner | e70d553 | 2005-02-22 16:53:06 +0000 | [diff] [blame] | 105 | if ( FT_FRAME_EXTRACT( table_len, face->glyph_locations ) ) |
| 106 | goto Exit; |
| 107 | |
| 108 | FT_TRACE2(( "loaded\n" )); |
| 109 | |
| 110 | Exit: |
| 111 | return error; |
| 112 | } |
| 113 | |
| 114 | |
| 115 | FT_LOCAL_DEF( FT_ULong ) |
Werner Lemberg | e793092 | 2005-03-01 02:13:50 +0000 | [diff] [blame^] | 116 | tt_face_get_location( TT_Face face, |
| 117 | FT_UInt gindex, |
| 118 | FT_UInt *asize ) |
David Turner | e70d553 | 2005-02-22 16:53:06 +0000 | [diff] [blame] | 119 | { |
| 120 | FT_ULong pos1, pos2; |
| 121 | FT_Byte* p; |
| 122 | FT_Byte* p_limit; |
| 123 | |
Werner Lemberg | e793092 | 2005-03-01 02:13:50 +0000 | [diff] [blame^] | 124 | |
David Turner | e70d553 | 2005-02-22 16:53:06 +0000 | [diff] [blame] | 125 | pos1 = pos2 = 0; |
Werner Lemberg | e793092 | 2005-03-01 02:13:50 +0000 | [diff] [blame^] | 126 | |
David Turner | e70d553 | 2005-02-22 16:53:06 +0000 | [diff] [blame] | 127 | if ( gindex < face->num_locations ) |
| 128 | { |
| 129 | if ( face->header.Index_To_Loc_Format != 0 ) |
| 130 | { |
Werner Lemberg | e793092 | 2005-03-01 02:13:50 +0000 | [diff] [blame^] | 131 | p = face->glyph_locations + gindex * 4; |
| 132 | p_limit = face->glyph_locations + face->num_locations * 4; |
David Turner | e70d553 | 2005-02-22 16:53:06 +0000 | [diff] [blame] | 133 | |
Werner Lemberg | e793092 | 2005-03-01 02:13:50 +0000 | [diff] [blame^] | 134 | pos1 = FT_NEXT_ULONG( p ); |
David Turner | e70d553 | 2005-02-22 16:53:06 +0000 | [diff] [blame] | 135 | pos2 = pos1; |
| 136 | |
Werner Lemberg | e793092 | 2005-03-01 02:13:50 +0000 | [diff] [blame^] | 137 | if ( p + 4 <= p_limit ) |
| 138 | pos2 = FT_NEXT_ULONG( p ); |
David Turner | e70d553 | 2005-02-22 16:53:06 +0000 | [diff] [blame] | 139 | } |
| 140 | else |
| 141 | { |
Werner Lemberg | e793092 | 2005-03-01 02:13:50 +0000 | [diff] [blame^] | 142 | p = face->glyph_locations + gindex * 2; |
| 143 | p_limit = face->glyph_locations + face->num_locations * 2; |
David Turner | e70d553 | 2005-02-22 16:53:06 +0000 | [diff] [blame] | 144 | |
Werner Lemberg | e793092 | 2005-03-01 02:13:50 +0000 | [diff] [blame^] | 145 | pos1 = FT_NEXT_USHORT( p ); |
David Turner | e70d553 | 2005-02-22 16:53:06 +0000 | [diff] [blame] | 146 | pos2 = pos1; |
| 147 | |
Werner Lemberg | e793092 | 2005-03-01 02:13:50 +0000 | [diff] [blame^] | 148 | if ( p + 2 <= p_limit ) |
| 149 | pos2 = FT_NEXT_USHORT( p ); |
David Turner | e70d553 | 2005-02-22 16:53:06 +0000 | [diff] [blame] | 150 | |
| 151 | pos1 <<= 1; |
| 152 | pos2 <<= 1; |
| 153 | } |
| 154 | } |
| 155 | |
Werner Lemberg | e793092 | 2005-03-01 02:13:50 +0000 | [diff] [blame^] | 156 | *asize = (FT_UInt)( pos2 - pos1 ); |
David Turner | e70d553 | 2005-02-22 16:53:06 +0000 | [diff] [blame] | 157 | |
| 158 | return pos1; |
| 159 | } |
| 160 | |
| 161 | |
| 162 | FT_LOCAL_DEF( void ) |
| 163 | tt_face_done_loca( TT_Face face ) |
| 164 | { |
Werner Lemberg | e793092 | 2005-03-01 02:13:50 +0000 | [diff] [blame^] | 165 | FT_Stream stream = face->root.stream; |
| 166 | |
David Turner | e70d553 | 2005-02-22 16:53:06 +0000 | [diff] [blame] | 167 | |
| 168 | FT_FRAME_RELEASE( face->glyph_locations ); |
| 169 | face->num_locations = 0; |
| 170 | } |
| 171 | |
| 172 | |
David Turner | e70d553 | 2005-02-22 16:53:06 +0000 | [diff] [blame] | 173 | #else /* !FT_OPTIMIZE_MEMORY */ |
| 174 | |
Werner Lemberg | e793092 | 2005-03-01 02:13:50 +0000 | [diff] [blame^] | 175 | |
David Turner | bc82f1b | 2002-03-01 02:26:22 +0000 | [diff] [blame] | 176 | FT_LOCAL_DEF( FT_Error ) |
David Turner | b08fe2d | 2002-08-27 20:20:29 +0000 | [diff] [blame] | 177 | tt_face_load_loca( TT_Face face, |
Werner Lemberg | 4a2305c | 2001-06-28 07:17:51 +0000 | [diff] [blame] | 178 | FT_Stream stream ) |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 179 | { |
David Turner | f9b8dec | 2000-06-16 19:34:52 +0000 | [diff] [blame] | 180 | FT_Error error; |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 181 | FT_Memory memory = stream->memory; |
David Turner | f9b8dec | 2000-06-16 19:34:52 +0000 | [diff] [blame] | 182 | FT_Short LongOffsets; |
| 183 | FT_ULong table_len; |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 184 | |
Werner Lemberg | 78575dc | 2000-06-12 19:36:41 +0000 | [diff] [blame] | 185 | |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 186 | FT_TRACE2(( "Locations " )); |
| 187 | LongOffsets = face->header.Index_To_Loc_Format; |
| 188 | |
| 189 | error = face->goto_table( face, TTAG_loca, stream, &table_len ); |
Werner Lemberg | 78575dc | 2000-06-12 19:36:41 +0000 | [diff] [blame] | 190 | if ( error ) |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 191 | { |
| 192 | error = TT_Err_Locations_Missing; |
| 193 | goto Exit; |
| 194 | } |
| 195 | |
| 196 | if ( LongOffsets != 0 ) |
| 197 | { |
David Turner | f9b8dec | 2000-06-16 19:34:52 +0000 | [diff] [blame] | 198 | face->num_locations = (FT_UShort)( table_len >> 2 ); |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 199 | |
Werner Lemberg | 78575dc | 2000-06-12 19:36:41 +0000 | [diff] [blame] | 200 | FT_TRACE2(( "(32bit offsets): %12d ", face->num_locations )); |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 201 | |
David Turner | e459d74 | 2002-03-22 13:52:37 +0000 | [diff] [blame] | 202 | if ( FT_NEW_ARRAY( face->glyph_locations, face->num_locations ) ) |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 203 | goto Exit; |
| 204 | |
David Turner | 7d3a264 | 2002-03-20 10:49:31 +0000 | [diff] [blame] | 205 | if ( FT_FRAME_ENTER( face->num_locations * 4L ) ) |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 206 | goto Exit; |
| 207 | |
| 208 | { |
David Turner | f9b8dec | 2000-06-16 19:34:52 +0000 | [diff] [blame] | 209 | FT_Long* loc = face->glyph_locations; |
| 210 | FT_Long* limit = loc + face->num_locations; |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 211 | |
Werner Lemberg | 78575dc | 2000-06-12 19:36:41 +0000 | [diff] [blame] | 212 | |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 213 | for ( ; loc < limit; loc++ ) |
David Turner | a890c29 | 2002-03-22 12:55:23 +0000 | [diff] [blame] | 214 | *loc = FT_GET_LONG(); |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 215 | } |
| 216 | |
David Turner | 7d3a264 | 2002-03-20 10:49:31 +0000 | [diff] [blame] | 217 | FT_FRAME_EXIT(); |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 218 | } |
| 219 | else |
| 220 | { |
David Turner | f9b8dec | 2000-06-16 19:34:52 +0000 | [diff] [blame] | 221 | face->num_locations = (FT_UShort)( table_len >> 1 ); |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 222 | |
Werner Lemberg | 78575dc | 2000-06-12 19:36:41 +0000 | [diff] [blame] | 223 | FT_TRACE2(( "(16bit offsets): %12d ", face->num_locations )); |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 224 | |
David Turner | e459d74 | 2002-03-22 13:52:37 +0000 | [diff] [blame] | 225 | if ( FT_NEW_ARRAY( face->glyph_locations, face->num_locations ) ) |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 226 | goto Exit; |
| 227 | |
David Turner | 7d3a264 | 2002-03-20 10:49:31 +0000 | [diff] [blame] | 228 | if ( FT_FRAME_ENTER( face->num_locations * 2L ) ) |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 229 | goto Exit; |
Werner Lemberg | e793092 | 2005-03-01 02:13:50 +0000 | [diff] [blame^] | 230 | |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 231 | { |
David Turner | f9b8dec | 2000-06-16 19:34:52 +0000 | [diff] [blame] | 232 | FT_Long* loc = face->glyph_locations; |
| 233 | FT_Long* limit = loc + face->num_locations; |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 234 | |
Werner Lemberg | 78575dc | 2000-06-12 19:36:41 +0000 | [diff] [blame] | 235 | |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 236 | for ( ; loc < limit; loc++ ) |
David Turner | a890c29 | 2002-03-22 12:55:23 +0000 | [diff] [blame] | 237 | *loc = (FT_Long)( (FT_ULong)FT_GET_USHORT() * 2 ); |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 238 | } |
Werner Lemberg | e793092 | 2005-03-01 02:13:50 +0000 | [diff] [blame^] | 239 | |
David Turner | 7d3a264 | 2002-03-20 10:49:31 +0000 | [diff] [blame] | 240 | FT_FRAME_EXIT(); |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 241 | } |
| 242 | |
| 243 | FT_TRACE2(( "loaded\n" )); |
| 244 | |
| 245 | Exit: |
| 246 | return error; |
| 247 | } |
| 248 | |
| 249 | |
David Turner | e70d553 | 2005-02-22 16:53:06 +0000 | [diff] [blame] | 250 | FT_LOCAL_DEF( FT_ULong ) |
Werner Lemberg | e793092 | 2005-03-01 02:13:50 +0000 | [diff] [blame^] | 251 | tt_face_get_location( TT_Face face, |
| 252 | FT_UInt gindex, |
| 253 | FT_UInt *asize ) |
David Turner | e70d553 | 2005-02-22 16:53:06 +0000 | [diff] [blame] | 254 | { |
| 255 | FT_ULong offset; |
| 256 | FT_UInt count; |
| 257 | |
Werner Lemberg | e793092 | 2005-03-01 02:13:50 +0000 | [diff] [blame^] | 258 | |
David Turner | e70d553 | 2005-02-22 16:53:06 +0000 | [diff] [blame] | 259 | offset = face->glyph_locations[gindex]; |
| 260 | count = 0; |
| 261 | |
| 262 | if ( gindex < (FT_UInt)face->num_locations - 1 ) |
| 263 | count = (FT_UInt)( face->glyph_locations[gindex + 1] - offset ); |
| 264 | |
| 265 | *asize = count; |
| 266 | return offset; |
| 267 | } |
| 268 | |
| 269 | |
| 270 | FT_LOCAL_DEF( void ) |
| 271 | tt_face_done_loca( TT_Face face ) |
| 272 | { |
Werner Lemberg | e793092 | 2005-03-01 02:13:50 +0000 | [diff] [blame^] | 273 | FT_Memory memory = face->root.memory; |
| 274 | |
David Turner | e70d553 | 2005-02-22 16:53:06 +0000 | [diff] [blame] | 275 | |
| 276 | FT_FREE( face->glyph_locations ); |
| 277 | face->num_locations = 0; |
| 278 | } |
| 279 | |
| 280 | |
David Turner | e70d553 | 2005-02-22 16:53:06 +0000 | [diff] [blame] | 281 | #endif /* !FT_OPTIMIZE_MEMORY */ |
| 282 | |
| 283 | |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 284 | /*************************************************************************/ |
| 285 | /* */ |
| 286 | /* <Function> */ |
David Turner | b08fe2d | 2002-08-27 20:20:29 +0000 | [diff] [blame] | 287 | /* tt_face_load_cvt */ |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 288 | /* */ |
| 289 | /* <Description> */ |
| 290 | /* Loads the control value table into a face object. */ |
| 291 | /* */ |
Werner Lemberg | 78575dc | 2000-06-12 19:36:41 +0000 | [diff] [blame] | 292 | /* <InOut> */ |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 293 | /* face :: A handle to the target face object. */ |
Werner Lemberg | 78575dc | 2000-06-12 19:36:41 +0000 | [diff] [blame] | 294 | /* */ |
| 295 | /* <Input> */ |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 296 | /* stream :: A handle to the input stream. */ |
| 297 | /* */ |
| 298 | /* <Return> */ |
Werner Lemberg | 9ca2af3 | 2000-06-21 03:03:28 +0000 | [diff] [blame] | 299 | /* FreeType error code. 0 means success. */ |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 300 | /* */ |
David Turner | bc82f1b | 2002-03-01 02:26:22 +0000 | [diff] [blame] | 301 | FT_LOCAL_DEF( FT_Error ) |
David Turner | b08fe2d | 2002-08-27 20:20:29 +0000 | [diff] [blame] | 302 | tt_face_load_cvt( TT_Face face, |
| 303 | FT_Stream stream ) |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 304 | { |
David Turner | e70d553 | 2005-02-22 16:53:06 +0000 | [diff] [blame] | 305 | #ifdef FT_CONFIG_OPTION_BYTECODE_INTERPRETER |
| 306 | |
David Turner | f9b8dec | 2000-06-16 19:34:52 +0000 | [diff] [blame] | 307 | FT_Error error; |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 308 | FT_Memory memory = stream->memory; |
David Turner | f9b8dec | 2000-06-16 19:34:52 +0000 | [diff] [blame] | 309 | FT_ULong table_len; |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 310 | |
Werner Lemberg | 78575dc | 2000-06-12 19:36:41 +0000 | [diff] [blame] | 311 | |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 312 | FT_TRACE2(( "CVT " )); |
| 313 | |
| 314 | error = face->goto_table( face, TTAG_cvt, stream, &table_len ); |
Werner Lemberg | 78575dc | 2000-06-12 19:36:41 +0000 | [diff] [blame] | 315 | if ( error ) |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 316 | { |
| 317 | FT_TRACE2(( "is missing!\n" )); |
| 318 | |
| 319 | face->cvt_size = 0; |
| 320 | face->cvt = NULL; |
| 321 | error = TT_Err_Ok; |
| 322 | |
| 323 | goto Exit; |
| 324 | } |
| 325 | |
| 326 | face->cvt_size = table_len / 2; |
| 327 | |
David Turner | e459d74 | 2002-03-22 13:52:37 +0000 | [diff] [blame] | 328 | if ( FT_NEW_ARRAY( face->cvt, face->cvt_size ) ) |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 329 | goto Exit; |
| 330 | |
David Turner | 7d3a264 | 2002-03-20 10:49:31 +0000 | [diff] [blame] | 331 | if ( FT_FRAME_ENTER( face->cvt_size * 2L ) ) |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 332 | goto Exit; |
| 333 | |
| 334 | { |
David Turner | f9b8dec | 2000-06-16 19:34:52 +0000 | [diff] [blame] | 335 | FT_Short* cur = face->cvt; |
| 336 | FT_Short* limit = cur + face->cvt_size; |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 337 | |
Werner Lemberg | 78575dc | 2000-06-12 19:36:41 +0000 | [diff] [blame] | 338 | |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 339 | for ( ; cur < limit; cur++ ) |
David Turner | a890c29 | 2002-03-22 12:55:23 +0000 | [diff] [blame] | 340 | *cur = FT_GET_SHORT(); |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 341 | } |
| 342 | |
David Turner | 7d3a264 | 2002-03-20 10:49:31 +0000 | [diff] [blame] | 343 | FT_FRAME_EXIT(); |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 344 | FT_TRACE2(( "loaded\n" )); |
| 345 | |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 346 | #ifdef TT_CONFIG_OPTION_GX_VAR_SUPPORT |
| 347 | if ( face->doblend ) |
| 348 | error = tt_face_vary_cvt( face, stream ); |
| 349 | #endif |
| 350 | |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 351 | Exit: |
| 352 | return error; |
David Turner | e70d553 | 2005-02-22 16:53:06 +0000 | [diff] [blame] | 353 | |
Werner Lemberg | e793092 | 2005-03-01 02:13:50 +0000 | [diff] [blame^] | 354 | #else /* !FT_CONFIG_OPTION_BYTECODE_INTERPRETER */ |
| 355 | |
| 356 | FT_UNUSED( face ); |
| 357 | FT_UNUSED( stream ); |
| 358 | |
David Turner | e70d553 | 2005-02-22 16:53:06 +0000 | [diff] [blame] | 359 | return 0; |
Werner Lemberg | e793092 | 2005-03-01 02:13:50 +0000 | [diff] [blame^] | 360 | |
David Turner | e70d553 | 2005-02-22 16:53:06 +0000 | [diff] [blame] | 361 | #endif |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 362 | } |
| 363 | |
| 364 | |
| 365 | /*************************************************************************/ |
| 366 | /* */ |
| 367 | /* <Function> */ |
David Turner | b08fe2d | 2002-08-27 20:20:29 +0000 | [diff] [blame] | 368 | /* tt_face_load_fpgm */ |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 369 | /* */ |
| 370 | /* <Description> */ |
| 371 | /* Loads the font program and the cvt program. */ |
| 372 | /* */ |
Werner Lemberg | 78575dc | 2000-06-12 19:36:41 +0000 | [diff] [blame] | 373 | /* <InOut> */ |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 374 | /* face :: A handle to the target face object. */ |
Werner Lemberg | 78575dc | 2000-06-12 19:36:41 +0000 | [diff] [blame] | 375 | /* */ |
| 376 | /* <Input> */ |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 377 | /* stream :: A handle to the input stream. */ |
| 378 | /* */ |
| 379 | /* <Return> */ |
Werner Lemberg | 9ca2af3 | 2000-06-21 03:03:28 +0000 | [diff] [blame] | 380 | /* FreeType error code. 0 means success. */ |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 381 | /* */ |
David Turner | bc82f1b | 2002-03-01 02:26:22 +0000 | [diff] [blame] | 382 | FT_LOCAL_DEF( FT_Error ) |
David Turner | b08fe2d | 2002-08-27 20:20:29 +0000 | [diff] [blame] | 383 | tt_face_load_fpgm( TT_Face face, |
| 384 | FT_Stream stream ) |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 385 | { |
David Turner | e70d553 | 2005-02-22 16:53:06 +0000 | [diff] [blame] | 386 | #ifdef FT_CONFIG_OPTION_BYTECODE_INTERPRETER |
| 387 | |
David Turner | f9b8dec | 2000-06-16 19:34:52 +0000 | [diff] [blame] | 388 | FT_Error error; |
| 389 | FT_ULong table_len; |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 390 | |
Werner Lemberg | 78575dc | 2000-06-12 19:36:41 +0000 | [diff] [blame] | 391 | |
Werner Lemberg | f697866 | 2000-01-08 20:00:54 +0000 | [diff] [blame] | 392 | FT_TRACE2(( "Font program " )); |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 393 | |
| 394 | /* The font program is optional */ |
| 395 | error = face->goto_table( face, TTAG_fpgm, stream, &table_len ); |
Werner Lemberg | f697866 | 2000-01-08 20:00:54 +0000 | [diff] [blame] | 396 | if ( error ) |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 397 | { |
| 398 | face->font_program = NULL; |
| 399 | face->font_program_size = 0; |
Werner Lemberg | 78575dc | 2000-06-12 19:36:41 +0000 | [diff] [blame] | 400 | |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 401 | FT_TRACE2(( "is missing!\n" )); |
| 402 | } |
| 403 | else |
| 404 | { |
| 405 | face->font_program_size = table_len; |
David Turner | 7d3a264 | 2002-03-20 10:49:31 +0000 | [diff] [blame] | 406 | if ( FT_FRAME_EXTRACT( table_len, face->font_program ) ) |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 407 | goto Exit; |
| 408 | |
| 409 | FT_TRACE2(( "loaded, %12d bytes\n", face->font_program_size )); |
| 410 | } |
| 411 | |
| 412 | FT_TRACE2(( "Prep program " )); |
| 413 | |
| 414 | error = face->goto_table( face, TTAG_prep, stream, &table_len ); |
Werner Lemberg | f697866 | 2000-01-08 20:00:54 +0000 | [diff] [blame] | 415 | if ( error ) |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 416 | { |
| 417 | face->cvt_program = NULL; |
| 418 | face->cvt_program_size = 0; |
Werner Lemberg | f697866 | 2000-01-08 20:00:54 +0000 | [diff] [blame] | 419 | error = TT_Err_Ok; |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 420 | |
| 421 | FT_TRACE2(( "is missing!\n" )); |
| 422 | } |
| 423 | else |
| 424 | { |
| 425 | face->cvt_program_size = table_len; |
David Turner | 7d3a264 | 2002-03-20 10:49:31 +0000 | [diff] [blame] | 426 | if ( FT_FRAME_EXTRACT( table_len, face->cvt_program ) ) |
David Turner | 2e42131 | 2000-05-26 22:13:17 +0000 | [diff] [blame] | 427 | goto Exit; |
Werner Lemberg | 78575dc | 2000-06-12 19:36:41 +0000 | [diff] [blame] | 428 | |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 429 | FT_TRACE2(( "loaded, %12d bytes\n", face->cvt_program_size )); |
| 430 | } |
| 431 | |
| 432 | Exit: |
| 433 | return error; |
David Turner | e70d553 | 2005-02-22 16:53:06 +0000 | [diff] [blame] | 434 | |
Werner Lemberg | e793092 | 2005-03-01 02:13:50 +0000 | [diff] [blame^] | 435 | #else /* !FT_CONFIG_OPTION_BYTECODE_INTERPRETER */ |
| 436 | |
| 437 | FT_UNUSED( face ); |
| 438 | FT_UNUSED( stream ); |
| 439 | |
David Turner | e70d553 | 2005-02-22 16:53:06 +0000 | [diff] [blame] | 440 | return 0; |
Werner Lemberg | e793092 | 2005-03-01 02:13:50 +0000 | [diff] [blame^] | 441 | |
David Turner | e70d553 | 2005-02-22 16:53:06 +0000 | [diff] [blame] | 442 | #endif |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 443 | } |
| 444 | |
| 445 | |
| 446 | /* END */ |