Werner Lemberg | 9ac9060 | 2018-06-03 09:01:17 +0200 | [diff] [blame] | 1 | /**************************************************************************** |
| 2 | * |
| 3 | * ttgxvar.c |
| 4 | * |
| 5 | * TrueType GX Font Variation loader |
| 6 | * |
Werner Lemberg | b6e8a71 | 2021-01-17 07:18:48 +0100 | [diff] [blame] | 7 | * Copyright (C) 2004-2021 by |
Werner Lemberg | 9ac9060 | 2018-06-03 09:01:17 +0200 | [diff] [blame] | 8 | * David Turner, Robert Wilhelm, Werner Lemberg, and George Williams. |
| 9 | * |
| 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 |
| 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 | */ |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 17 | |
| 18 | |
Werner Lemberg | 9ac9060 | 2018-06-03 09:01:17 +0200 | [diff] [blame] | 19 | /************************************************************************** |
| 20 | * |
| 21 | * Apple documents the `fvar', `gvar', `cvar', and `avar' tables at |
| 22 | * |
| 23 | * https://developer.apple.com/fonts/TrueType-Reference-Manual/RM06/Chap6[fgca]var.html |
| 24 | * |
| 25 | * The documentation for `gvar' is not intelligible; `cvar' refers you |
| 26 | * to `gvar' and is thus also incomprehensible. |
| 27 | * |
| 28 | * The documentation for `avar' appears correct, but Apple has no fonts |
| 29 | * with an `avar' table, so it is hard to test. |
| 30 | * |
| 31 | * Many thanks to John Jenkins (at Apple) in figuring this out. |
| 32 | * |
| 33 | * |
| 34 | * Apple's `kern' table has some references to tuple indices, but as |
| 35 | * there is no indication where these indices are defined, nor how to |
| 36 | * interpolate the kerning values (different tuples have different |
| 37 | * classes) this issue is ignored. |
| 38 | * |
| 39 | */ |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 40 | |
| 41 | |
| 42 | #include <ft2build.h> |
David Turner | e133913 | 2020-06-08 13:31:55 +0200 | [diff] [blame] | 43 | #include <freetype/internal/ftdebug.h> |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 44 | #include FT_CONFIG_CONFIG_H |
David Turner | e133913 | 2020-06-08 13:31:55 +0200 | [diff] [blame] | 45 | #include <freetype/internal/ftstream.h> |
| 46 | #include <freetype/internal/sfnt.h> |
| 47 | #include <freetype/tttags.h> |
| 48 | #include <freetype/ttnameid.h> |
| 49 | #include <freetype/ftmm.h> |
| 50 | #include <freetype/ftlist.h> |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 51 | |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 52 | #include "ttpload.h" |
| 53 | #include "ttgxvar.h" |
| 54 | |
| 55 | #include "tterrors.h" |
| 56 | |
| 57 | |
| 58 | #ifdef TT_CONFIG_OPTION_GX_VAR_SUPPORT |
| 59 | |
| 60 | |
Werner Lemberg | 328b792 | 2015-03-04 08:40:23 +0100 | [diff] [blame] | 61 | #define FT_Stream_FTell( stream ) \ |
Werner Lemberg | badf317 | 2013-06-06 09:16:38 +0200 | [diff] [blame] | 62 | (FT_ULong)( (stream)->cursor - (stream)->base ) |
Werner Lemberg | 4261e49 | 2017-07-05 23:00:23 +0200 | [diff] [blame] | 63 | #define FT_Stream_SeekSet( stream, off ) \ |
| 64 | (stream)->cursor = \ |
| 65 | ( (off) < (FT_ULong)( (stream)->limit - (stream)->base ) ) \ |
| 66 | ? (stream)->base + (off) \ |
| 67 | : (stream)->limit |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 68 | |
| 69 | |
Werner Lemberg | a632fb5 | 2018-06-24 15:22:10 +0200 | [diff] [blame] | 70 | /* some macros we need */ |
Werner Lemberg | 1178227 | 2019-05-11 09:29:19 +0200 | [diff] [blame] | 71 | #define FT_fdot14ToFixed( x ) \ |
| 72 | ( (FT_Fixed)( (FT_ULong)(x) << 2 ) ) |
| 73 | #define FT_intToFixed( i ) \ |
| 74 | ( (FT_Fixed)( (FT_ULong)(i) << 16 ) ) |
Werner Lemberg | 49079ce | 2019-05-29 08:08:53 +0200 | [diff] [blame] | 75 | #define FT_fdot6ToFixed( i ) \ |
Werner Lemberg | 3758005 | 2019-05-16 12:15:54 +0200 | [diff] [blame] | 76 | ( (FT_Fixed)( (FT_ULong)(i) << 10 ) ) |
Werner Lemberg | 49079ce | 2019-05-29 08:08:53 +0200 | [diff] [blame] | 77 | #define FT_fixedToInt( x ) \ |
| 78 | ( (FT_Short)( ( (x) + 0x8000U ) >> 16 ) ) |
| 79 | #define FT_fixedToFdot6( x ) \ |
| 80 | ( (FT_Pos)( ( (x) + 0x200 ) >> 10 ) ) |
Werner Lemberg | a632fb5 | 2018-06-24 15:22:10 +0200 | [diff] [blame] | 81 | |
| 82 | |
Werner Lemberg | 9ac9060 | 2018-06-03 09:01:17 +0200 | [diff] [blame] | 83 | /************************************************************************** |
| 84 | * |
| 85 | * The macro FT_COMPONENT is used in trace mode. It is an implicit |
| 86 | * parameter of the FT_TRACE() and FT_ERROR() macros, used to print/log |
| 87 | * messages during execution. |
| 88 | */ |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 89 | #undef FT_COMPONENT |
Werner Lemberg | a0dd16f | 2018-08-15 18:13:17 +0200 | [diff] [blame] | 90 | #define FT_COMPONENT ttgxvar |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 91 | |
| 92 | |
| 93 | /*************************************************************************/ |
| 94 | /*************************************************************************/ |
| 95 | /***** *****/ |
| 96 | /***** Internal Routines *****/ |
| 97 | /***** *****/ |
| 98 | /*************************************************************************/ |
| 99 | /*************************************************************************/ |
| 100 | |
| 101 | |
Werner Lemberg | 9ac9060 | 2018-06-03 09:01:17 +0200 | [diff] [blame] | 102 | /************************************************************************** |
| 103 | * |
| 104 | * The macro ALL_POINTS is used in `ft_var_readpackedpoints'. It |
| 105 | * indicates that there is a delta for every point without needing to |
| 106 | * enumerate all of them. |
| 107 | */ |
Werner Lemberg | badf317 | 2013-06-06 09:16:38 +0200 | [diff] [blame] | 108 | |
| 109 | /* ensure that value `0' has the same width as a pointer */ |
| 110 | #define ALL_POINTS (FT_UShort*)~(FT_PtrDist)0 |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 111 | |
| 112 | |
Werner Lemberg | 328b792 | 2015-03-04 08:40:23 +0100 | [diff] [blame] | 113 | #define GX_PT_POINTS_ARE_WORDS 0x80U |
| 114 | #define GX_PT_POINT_RUN_COUNT_MASK 0x7FU |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 115 | |
| 116 | |
Werner Lemberg | 9ac9060 | 2018-06-03 09:01:17 +0200 | [diff] [blame] | 117 | /************************************************************************** |
| 118 | * |
| 119 | * @Function: |
| 120 | * ft_var_readpackedpoints |
| 121 | * |
| 122 | * @Description: |
| 123 | * Read a set of points to which the following deltas will apply. |
| 124 | * Points are packed with a run length encoding. |
| 125 | * |
| 126 | * @Input: |
| 127 | * stream :: |
| 128 | * The data stream. |
| 129 | * |
| 130 | * size :: |
| 131 | * The size of the table holding the data. |
| 132 | * |
| 133 | * @Output: |
| 134 | * point_cnt :: |
| 135 | * The number of points read. A zero value means that |
| 136 | * all points in the glyph will be affected, without |
| 137 | * enumerating them individually. |
| 138 | * |
| 139 | * @Return: |
| 140 | * An array of FT_UShort containing the affected points or the |
| 141 | * special value ALL_POINTS. |
| 142 | */ |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 143 | static FT_UShort* |
| 144 | ft_var_readpackedpoints( FT_Stream stream, |
Werner Lemberg | 43a96eb | 2015-10-13 11:18:55 +0200 | [diff] [blame] | 145 | FT_ULong size, |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 146 | FT_UInt *point_cnt ) |
| 147 | { |
suzuki toshiya | e62c876 | 2011-06-15 02:48:33 +0900 | [diff] [blame] | 148 | FT_UShort *points = NULL; |
Werner Lemberg | 328b792 | 2015-03-04 08:40:23 +0100 | [diff] [blame] | 149 | FT_UInt n; |
| 150 | FT_UInt runcnt; |
| 151 | FT_UInt i, j; |
| 152 | FT_UShort first; |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 153 | FT_Memory memory = stream->memory; |
Werner Lemberg | e3c9301 | 2013-03-14 11:21:17 +0100 | [diff] [blame] | 154 | FT_Error error = FT_Err_Ok; |
Werner Lemberg | f814f68 | 2005-05-22 20:33:09 +0000 | [diff] [blame] | 155 | |
| 156 | FT_UNUSED( error ); |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 157 | |
| 158 | |
Werner Lemberg | 328b792 | 2015-03-04 08:40:23 +0100 | [diff] [blame] | 159 | *point_cnt = 0; |
| 160 | |
| 161 | n = FT_GET_BYTE(); |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 162 | if ( n == 0 ) |
| 163 | return ALL_POINTS; |
| 164 | |
| 165 | if ( n & GX_PT_POINTS_ARE_WORDS ) |
Werner Lemberg | 328b792 | 2015-03-04 08:40:23 +0100 | [diff] [blame] | 166 | { |
| 167 | n &= GX_PT_POINT_RUN_COUNT_MASK; |
| 168 | n <<= 8; |
| 169 | n |= FT_GET_BYTE(); |
| 170 | } |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 171 | |
Werner Lemberg | 43a96eb | 2015-10-13 11:18:55 +0200 | [diff] [blame] | 172 | if ( n > size ) |
Werner Lemberg | da34673 | 2015-10-10 10:21:27 +0200 | [diff] [blame] | 173 | { |
| 174 | FT_TRACE1(( "ft_var_readpackedpoints: number of points too large\n" )); |
| 175 | return NULL; |
| 176 | } |
| 177 | |
Werner Lemberg | e69f34b | 2016-07-19 07:06:19 +0200 | [diff] [blame] | 178 | /* in the nested loops below we increase `i' twice; */ |
Werner Lemberg | 7f63105 | 2016-07-19 21:35:58 +0200 | [diff] [blame] | 179 | /* it is faster to simply allocate one more slot */ |
Werner Lemberg | e69f34b | 2016-07-19 07:06:19 +0200 | [diff] [blame] | 180 | /* than to add another test within the loop */ |
Alexei Podtelezhnikov | cb9e7b7 | 2021-11-06 22:59:31 -0400 | [diff] [blame] | 181 | if ( FT_QNEW_ARRAY( points, n + 1 ) ) |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 182 | return NULL; |
| 183 | |
Werner Lemberg | 328b792 | 2015-03-04 08:40:23 +0100 | [diff] [blame] | 184 | *point_cnt = n; |
| 185 | |
Werner Lemberg | f147fb2 | 2016-07-16 07:06:21 +0200 | [diff] [blame] | 186 | first = 0; |
Werner Lemberg | e69f34b | 2016-07-19 07:06:19 +0200 | [diff] [blame] | 187 | i = 0; |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 188 | while ( i < n ) |
| 189 | { |
| 190 | runcnt = FT_GET_BYTE(); |
| 191 | if ( runcnt & GX_PT_POINTS_ARE_WORDS ) |
| 192 | { |
Werner Lemberg | 328b792 | 2015-03-04 08:40:23 +0100 | [diff] [blame] | 193 | runcnt &= GX_PT_POINT_RUN_COUNT_MASK; |
Werner Lemberg | f147fb2 | 2016-07-16 07:06:21 +0200 | [diff] [blame] | 194 | first += FT_GET_USHORT(); |
Werner Lemberg | 328b792 | 2015-03-04 08:40:23 +0100 | [diff] [blame] | 195 | points[i++] = first; |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 196 | |
Werner Lemberg | 328b792 | 2015-03-04 08:40:23 +0100 | [diff] [blame] | 197 | /* first point not included in run count */ |
| 198 | for ( j = 0; j < runcnt; j++ ) |
| 199 | { |
| 200 | first += FT_GET_USHORT(); |
| 201 | points[i++] = first; |
Werner Lemberg | 7f63105 | 2016-07-19 21:35:58 +0200 | [diff] [blame] | 202 | if ( i >= n ) |
Behdad Esfahbod | 69446dd | 2016-07-16 10:52:38 +0200 | [diff] [blame] | 203 | break; |
Werner Lemberg | 328b792 | 2015-03-04 08:40:23 +0100 | [diff] [blame] | 204 | } |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 205 | } |
| 206 | else |
| 207 | { |
Werner Lemberg | f147fb2 | 2016-07-16 07:06:21 +0200 | [diff] [blame] | 208 | first += FT_GET_BYTE(); |
Werner Lemberg | 328b792 | 2015-03-04 08:40:23 +0100 | [diff] [blame] | 209 | points[i++] = first; |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 210 | |
Werner Lemberg | 328b792 | 2015-03-04 08:40:23 +0100 | [diff] [blame] | 211 | for ( j = 0; j < runcnt; j++ ) |
| 212 | { |
| 213 | first += FT_GET_BYTE(); |
| 214 | points[i++] = first; |
Werner Lemberg | 7f63105 | 2016-07-19 21:35:58 +0200 | [diff] [blame] | 215 | if ( i >= n ) |
Behdad Esfahbod | 69446dd | 2016-07-16 10:52:38 +0200 | [diff] [blame] | 216 | break; |
Werner Lemberg | 328b792 | 2015-03-04 08:40:23 +0100 | [diff] [blame] | 217 | } |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 218 | } |
| 219 | } |
| 220 | |
| 221 | return points; |
| 222 | } |
| 223 | |
| 224 | |
Werner Lemberg | 328b792 | 2015-03-04 08:40:23 +0100 | [diff] [blame] | 225 | #define GX_DT_DELTAS_ARE_ZERO 0x80U |
| 226 | #define GX_DT_DELTAS_ARE_WORDS 0x40U |
| 227 | #define GX_DT_DELTA_RUN_COUNT_MASK 0x3FU |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 228 | |
| 229 | |
Werner Lemberg | 9ac9060 | 2018-06-03 09:01:17 +0200 | [diff] [blame] | 230 | /************************************************************************** |
| 231 | * |
| 232 | * @Function: |
| 233 | * ft_var_readpackeddeltas |
| 234 | * |
| 235 | * @Description: |
| 236 | * Read a set of deltas. These are packed slightly differently than |
| 237 | * points. In particular there is no overall count. |
| 238 | * |
| 239 | * @Input: |
| 240 | * stream :: |
| 241 | * The data stream. |
| 242 | * |
| 243 | * size :: |
| 244 | * The size of the table holding the data. |
| 245 | * |
| 246 | * delta_cnt :: |
| 247 | * The number of deltas to be read. |
| 248 | * |
| 249 | * @Return: |
Werner Lemberg | a632fb5 | 2018-06-24 15:22:10 +0200 | [diff] [blame] | 250 | * An array of FT_Fixed containing the deltas for the affected |
Werner Lemberg | 9ac9060 | 2018-06-03 09:01:17 +0200 | [diff] [blame] | 251 | * points. (This only gets the deltas for one dimension. It will |
| 252 | * generally be called twice, once for x, once for y. When used in |
| 253 | * cvt table, it will only be called once.) |
Werner Lemberg | a632fb5 | 2018-06-24 15:22:10 +0200 | [diff] [blame] | 254 | * |
| 255 | * We use FT_Fixed to avoid accumulation errors while summing up all |
| 256 | * deltas (the rounding to integer values happens as the very last |
| 257 | * step). |
Werner Lemberg | 9ac9060 | 2018-06-03 09:01:17 +0200 | [diff] [blame] | 258 | */ |
Werner Lemberg | a632fb5 | 2018-06-24 15:22:10 +0200 | [diff] [blame] | 259 | static FT_Fixed* |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 260 | ft_var_readpackeddeltas( FT_Stream stream, |
Werner Lemberg | 43a96eb | 2015-10-13 11:18:55 +0200 | [diff] [blame] | 261 | FT_ULong size, |
Werner Lemberg | 328b792 | 2015-03-04 08:40:23 +0100 | [diff] [blame] | 262 | FT_UInt delta_cnt ) |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 263 | { |
Werner Lemberg | a632fb5 | 2018-06-24 15:22:10 +0200 | [diff] [blame] | 264 | FT_Fixed *deltas = NULL; |
Werner Lemberg | 328b792 | 2015-03-04 08:40:23 +0100 | [diff] [blame] | 265 | FT_UInt runcnt, cnt; |
| 266 | FT_UInt i, j; |
Jany Belluz | fc55291 | 2021-11-04 11:07:43 +0000 | [diff] [blame] | 267 | FT_UInt bytes_used; |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 268 | FT_Memory memory = stream->memory; |
Werner Lemberg | e3c9301 | 2013-03-14 11:21:17 +0100 | [diff] [blame] | 269 | FT_Error error = FT_Err_Ok; |
Werner Lemberg | f814f68 | 2005-05-22 20:33:09 +0000 | [diff] [blame] | 270 | |
| 271 | FT_UNUSED( error ); |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 272 | |
| 273 | |
Alexei Podtelezhnikov | cb9e7b7 | 2021-11-06 22:59:31 -0400 | [diff] [blame] | 274 | if ( FT_QNEW_ARRAY( deltas, delta_cnt ) ) |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 275 | return NULL; |
| 276 | |
Jany Belluz | fc55291 | 2021-11-04 11:07:43 +0000 | [diff] [blame] | 277 | i = 0; |
| 278 | bytes_used = 0; |
| 279 | |
| 280 | while ( i < delta_cnt && bytes_used < size ) |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 281 | { |
| 282 | runcnt = FT_GET_BYTE(); |
Werner Lemberg | 328b792 | 2015-03-04 08:40:23 +0100 | [diff] [blame] | 283 | cnt = runcnt & GX_DT_DELTA_RUN_COUNT_MASK; |
| 284 | |
Jany Belluz | fc55291 | 2021-11-04 11:07:43 +0000 | [diff] [blame] | 285 | bytes_used++; |
| 286 | |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 287 | if ( runcnt & GX_DT_DELTAS_ARE_ZERO ) |
| 288 | { |
Jany Belluz | fc55291 | 2021-11-04 11:07:43 +0000 | [diff] [blame] | 289 | /* `cnt` + 1 zeroes get added */ |
Werner Lemberg | 328b792 | 2015-03-04 08:40:23 +0100 | [diff] [blame] | 290 | for ( j = 0; j <= cnt && i < delta_cnt; j++ ) |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 291 | deltas[i++] = 0; |
| 292 | } |
| 293 | else if ( runcnt & GX_DT_DELTAS_ARE_WORDS ) |
| 294 | { |
Jany Belluz | fc55291 | 2021-11-04 11:07:43 +0000 | [diff] [blame] | 295 | /* `cnt` + 1 shorts from the stack */ |
| 296 | bytes_used += 2 * ( cnt + 1 ); |
| 297 | if ( bytes_used > size ) |
| 298 | { |
| 299 | FT_TRACE1(( "ft_var_readpackeddeltas:" |
| 300 | " number of short deltas too large\n" )); |
| 301 | goto Fail; |
| 302 | } |
| 303 | |
Werner Lemberg | 328b792 | 2015-03-04 08:40:23 +0100 | [diff] [blame] | 304 | for ( j = 0; j <= cnt && i < delta_cnt; j++ ) |
Werner Lemberg | a632fb5 | 2018-06-24 15:22:10 +0200 | [diff] [blame] | 305 | deltas[i++] = FT_intToFixed( FT_GET_SHORT() ); |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 306 | } |
| 307 | else |
| 308 | { |
Jany Belluz | fc55291 | 2021-11-04 11:07:43 +0000 | [diff] [blame] | 309 | /* `cnt` + 1 signed bytes from the stack */ |
| 310 | bytes_used += cnt + 1; |
| 311 | if ( bytes_used > size ) |
| 312 | { |
| 313 | FT_TRACE1(( "ft_var_readpackeddeltas:" |
| 314 | " number of byte deltas too large\n" )); |
| 315 | goto Fail; |
| 316 | } |
| 317 | |
Werner Lemberg | 328b792 | 2015-03-04 08:40:23 +0100 | [diff] [blame] | 318 | for ( j = 0; j <= cnt && i < delta_cnt; j++ ) |
Werner Lemberg | a632fb5 | 2018-06-24 15:22:10 +0200 | [diff] [blame] | 319 | deltas[i++] = FT_intToFixed( FT_GET_CHAR() ); |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 320 | } |
| 321 | |
Werner Lemberg | 328b792 | 2015-03-04 08:40:23 +0100 | [diff] [blame] | 322 | if ( j <= cnt ) |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 323 | { |
Jany Belluz | fc55291 | 2021-11-04 11:07:43 +0000 | [diff] [blame] | 324 | FT_TRACE1(( "ft_var_readpackeddeltas:" |
| 325 | " number of deltas too large\n" )); |
| 326 | goto Fail; |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 327 | } |
| 328 | } |
| 329 | |
Jany Belluz | fc55291 | 2021-11-04 11:07:43 +0000 | [diff] [blame] | 330 | if ( i < delta_cnt ) |
| 331 | { |
| 332 | FT_TRACE1(( "ft_var_readpackeddeltas: not enough deltas\n" )); |
| 333 | goto Fail; |
| 334 | } |
| 335 | |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 336 | return deltas; |
Jany Belluz | fc55291 | 2021-11-04 11:07:43 +0000 | [diff] [blame] | 337 | |
| 338 | Fail: |
| 339 | FT_FREE( deltas ); |
| 340 | return NULL; |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 341 | } |
| 342 | |
| 343 | |
Werner Lemberg | 9ac9060 | 2018-06-03 09:01:17 +0200 | [diff] [blame] | 344 | /************************************************************************** |
| 345 | * |
| 346 | * @Function: |
| 347 | * ft_var_load_avar |
| 348 | * |
| 349 | * @Description: |
| 350 | * Parse the `avar' table if present. It need not be, so we return |
| 351 | * nothing. |
| 352 | * |
| 353 | * @InOut: |
| 354 | * face :: |
| 355 | * The font face. |
| 356 | */ |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 357 | static void |
| 358 | ft_var_load_avar( TT_Face face ) |
| 359 | { |
Werner Lemberg | 0aa3616 | 2015-03-08 22:50:37 +0100 | [diff] [blame] | 360 | FT_Stream stream = FT_FACE_STREAM( face ); |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 361 | FT_Memory memory = stream->memory; |
| 362 | GX_Blend blend = face->blend; |
| 363 | GX_AVarSegment segment; |
Werner Lemberg | e3c9301 | 2013-03-14 11:21:17 +0100 | [diff] [blame] | 364 | FT_Error error = FT_Err_Ok; |
Werner Lemberg | 1f7a4e1 | 2015-02-17 10:17:56 +0100 | [diff] [blame] | 365 | FT_Long version; |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 366 | FT_Long axisCount; |
| 367 | FT_Int i, j; |
| 368 | FT_ULong table_len; |
| 369 | |
Werner Lemberg | f814f68 | 2005-05-22 20:33:09 +0000 | [diff] [blame] | 370 | FT_UNUSED( error ); |
| 371 | |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 372 | |
Werner Lemberg | cdee7d1 | 2015-05-31 11:54:42 +0200 | [diff] [blame] | 373 | FT_TRACE2(( "AVAR " )); |
| 374 | |
Werner Lemberg | 4a62922 | 2017-03-12 10:19:53 +0100 | [diff] [blame] | 375 | blend->avar_loaded = TRUE; |
Werner Lemberg | cdee7d1 | 2015-05-31 11:54:42 +0200 | [diff] [blame] | 376 | error = face->goto_table( face, TTAG_avar, stream, &table_len ); |
| 377 | if ( error ) |
| 378 | { |
| 379 | FT_TRACE2(( "is missing\n" )); |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 380 | return; |
Werner Lemberg | cdee7d1 | 2015-05-31 11:54:42 +0200 | [diff] [blame] | 381 | } |
David Turner | c28b8c1 | 2004-06-24 20:18:24 +0000 | [diff] [blame] | 382 | |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 383 | if ( FT_FRAME_ENTER( table_len ) ) |
| 384 | return; |
| 385 | |
| 386 | version = FT_GET_LONG(); |
| 387 | axisCount = FT_GET_LONG(); |
| 388 | |
Werner Lemberg | cdee7d1 | 2015-05-31 11:54:42 +0200 | [diff] [blame] | 389 | if ( version != 0x00010000L ) |
| 390 | { |
| 391 | FT_TRACE2(( "bad table version\n" )); |
Werner Lemberg | 19b42a5 | 2004-05-10 20:54:27 +0000 | [diff] [blame] | 392 | goto Exit; |
Werner Lemberg | cdee7d1 | 2015-05-31 11:54:42 +0200 | [diff] [blame] | 393 | } |
| 394 | |
| 395 | FT_TRACE2(( "loaded\n" )); |
| 396 | |
| 397 | if ( axisCount != (FT_Long)blend->mmvar->num_axis ) |
| 398 | { |
Werner Lemberg | a6adb25 | 2020-12-02 14:15:07 +0100 | [diff] [blame] | 399 | FT_TRACE2(( "ft_var_load_avar:" |
| 400 | " number of axes in `avar' and `fvar'\n" )); |
| 401 | FT_TRACE2(( " table are different\n" )); |
Werner Lemberg | cdee7d1 | 2015-05-31 11:54:42 +0200 | [diff] [blame] | 402 | goto Exit; |
| 403 | } |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 404 | |
Alexei Podtelezhnikov | cb9e7b7 | 2021-11-06 22:59:31 -0400 | [diff] [blame] | 405 | if ( FT_QNEW_ARRAY( blend->avar_segment, axisCount ) ) |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 406 | goto Exit; |
| 407 | |
| 408 | segment = &blend->avar_segment[0]; |
Werner Lemberg | 0aa3616 | 2015-03-08 22:50:37 +0100 | [diff] [blame] | 409 | for ( i = 0; i < axisCount; i++, segment++ ) |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 410 | { |
Werner Lemberg | cdee7d1 | 2015-05-31 11:54:42 +0200 | [diff] [blame] | 411 | FT_TRACE5(( " axis %d:\n", i )); |
| 412 | |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 413 | segment->pairCount = FT_GET_USHORT(); |
Alexei Podtelezhnikov | cb9e7b7 | 2021-11-06 22:59:31 -0400 | [diff] [blame] | 414 | if ( (FT_ULong)segment->pairCount * 4 > table_len || |
| 415 | FT_QNEW_ARRAY( segment->correspondence, segment->pairCount ) ) |
Werner Lemberg | ee6e92c | 2004-05-11 06:45:27 +0000 | [diff] [blame] | 416 | { |
| 417 | /* Failure. Free everything we have done so far. We must do */ |
| 418 | /* it right now since loading the `avar' table is optional. */ |
| 419 | |
Werner Lemberg | 0aa3616 | 2015-03-08 22:50:37 +0100 | [diff] [blame] | 420 | for ( j = i - 1; j >= 0; j-- ) |
Werner Lemberg | ee6e92c | 2004-05-11 06:45:27 +0000 | [diff] [blame] | 421 | FT_FREE( blend->avar_segment[j].correspondence ); |
| 422 | |
| 423 | FT_FREE( blend->avar_segment ); |
| 424 | blend->avar_segment = NULL; |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 425 | goto Exit; |
Werner Lemberg | ee6e92c | 2004-05-11 06:45:27 +0000 | [diff] [blame] | 426 | } |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 427 | |
Werner Lemberg | 0aa3616 | 2015-03-08 22:50:37 +0100 | [diff] [blame] | 428 | for ( j = 0; j < segment->pairCount; j++ ) |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 429 | { |
Werner Lemberg | dc39f76 | 2019-05-07 10:09:55 +0200 | [diff] [blame] | 430 | segment->correspondence[j].fromCoord = |
| 431 | FT_fdot14ToFixed( FT_GET_SHORT() ); |
| 432 | segment->correspondence[j].toCoord = |
| 433 | FT_fdot14ToFixed( FT_GET_SHORT() ); |
Werner Lemberg | cdee7d1 | 2015-05-31 11:54:42 +0200 | [diff] [blame] | 434 | |
Werner Lemberg | 84b0d99 | 2016-12-29 10:38:51 +0100 | [diff] [blame] | 435 | FT_TRACE5(( " mapping %.5f to %.5f\n", |
Werner Lemberg | cdee7d1 | 2015-05-31 11:54:42 +0200 | [diff] [blame] | 436 | segment->correspondence[j].fromCoord / 65536.0, |
| 437 | segment->correspondence[j].toCoord / 65536.0 )); |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 438 | } |
Werner Lemberg | cdee7d1 | 2015-05-31 11:54:42 +0200 | [diff] [blame] | 439 | |
| 440 | FT_TRACE5(( "\n" )); |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 441 | } |
| 442 | |
| 443 | Exit: |
| 444 | FT_FRAME_EXIT(); |
| 445 | } |
| 446 | |
| 447 | |
Werner Lemberg | 9c81470 | 2017-01-06 21:13:36 +0100 | [diff] [blame] | 448 | static FT_Error |
Werner Lemberg | fb90f00 | 2017-01-06 22:23:52 +0100 | [diff] [blame] | 449 | ft_var_load_item_variation_store( TT_Face face, |
| 450 | FT_ULong offset, |
| 451 | GX_ItemVarStore itemStore ) |
Werner Lemberg | 9c81470 | 2017-01-06 21:13:36 +0100 | [diff] [blame] | 452 | { |
| 453 | FT_Stream stream = FT_FACE_STREAM( face ); |
| 454 | FT_Memory memory = stream->memory; |
| 455 | |
| 456 | FT_Error error; |
| 457 | FT_UShort format; |
| 458 | FT_ULong region_offset; |
| 459 | FT_UInt i, j, k; |
Werner Lemberg | e4f7673 | 2021-11-13 21:11:00 +0100 | [diff] [blame] | 460 | FT_UInt wordDeltaCount; |
| 461 | FT_Bool long_words; |
Werner Lemberg | 9c81470 | 2017-01-06 21:13:36 +0100 | [diff] [blame] | 462 | |
Werner Lemberg | fb90f00 | 2017-01-06 22:23:52 +0100 | [diff] [blame] | 463 | GX_Blend blend = face->blend; |
| 464 | GX_ItemVarData varData; |
Werner Lemberg | 9c81470 | 2017-01-06 21:13:36 +0100 | [diff] [blame] | 465 | |
| 466 | FT_ULong* dataOffsetArray = NULL; |
| 467 | |
| 468 | |
| 469 | if ( FT_STREAM_SEEK( offset ) || |
| 470 | FT_READ_USHORT( format ) ) |
| 471 | goto Exit; |
| 472 | |
| 473 | if ( format != 1 ) |
| 474 | { |
Werner Lemberg | 79d52b9 | 2017-01-23 07:43:56 +0100 | [diff] [blame] | 475 | FT_TRACE2(( "ft_var_load_item_variation_store: bad store format %d\n", |
| 476 | format )); |
Werner Lemberg | 9c81470 | 2017-01-06 21:13:36 +0100 | [diff] [blame] | 477 | error = FT_THROW( Invalid_Table ); |
| 478 | goto Exit; |
| 479 | } |
| 480 | |
Werner Lemberg | 9c81470 | 2017-01-06 21:13:36 +0100 | [diff] [blame] | 481 | /* read top level fields */ |
| 482 | if ( FT_READ_ULONG( region_offset ) || |
| 483 | FT_READ_USHORT( itemStore->dataCount ) ) |
| 484 | goto Exit; |
| 485 | |
Werner Lemberg | 79d52b9 | 2017-01-23 07:43:56 +0100 | [diff] [blame] | 486 | /* we need at least one entry in `itemStore->varData' */ |
| 487 | if ( !itemStore->dataCount ) |
| 488 | { |
| 489 | FT_TRACE2(( "ft_var_load_item_variation_store: missing varData\n" )); |
| 490 | error = FT_THROW( Invalid_Table ); |
| 491 | goto Exit; |
| 492 | } |
| 493 | |
Werner Lemberg | 9c81470 | 2017-01-06 21:13:36 +0100 | [diff] [blame] | 494 | /* make temporary copy of item variation data offsets; */ |
| 495 | /* we will parse region list first, then come back */ |
Alexei Podtelezhnikov | cb9e7b7 | 2021-11-06 22:59:31 -0400 | [diff] [blame] | 496 | if ( FT_QNEW_ARRAY( dataOffsetArray, itemStore->dataCount ) ) |
Werner Lemberg | 9c81470 | 2017-01-06 21:13:36 +0100 | [diff] [blame] | 497 | goto Exit; |
| 498 | |
| 499 | for ( i = 0; i < itemStore->dataCount; i++ ) |
| 500 | { |
| 501 | if ( FT_READ_ULONG( dataOffsetArray[i] ) ) |
| 502 | goto Exit; |
| 503 | } |
| 504 | |
| 505 | /* parse array of region records (region list) */ |
| 506 | if ( FT_STREAM_SEEK( offset + region_offset ) ) |
| 507 | goto Exit; |
| 508 | |
| 509 | if ( FT_READ_USHORT( itemStore->axisCount ) || |
| 510 | FT_READ_USHORT( itemStore->regionCount ) ) |
| 511 | goto Exit; |
| 512 | |
| 513 | if ( itemStore->axisCount != (FT_Long)blend->mmvar->num_axis ) |
| 514 | { |
| 515 | FT_TRACE2(( "ft_var_load_item_variation_store:" |
Werner Lemberg | d924a66 | 2021-02-04 07:44:06 +0100 | [diff] [blame] | 516 | " number of axes in item variation store\n" )); |
| 517 | FT_TRACE2(( " " |
Werner Lemberg | fb90f00 | 2017-01-06 22:23:52 +0100 | [diff] [blame] | 518 | " and `fvar' table are different\n" )); |
Werner Lemberg | 9c81470 | 2017-01-06 21:13:36 +0100 | [diff] [blame] | 519 | error = FT_THROW( Invalid_Table ); |
| 520 | goto Exit; |
| 521 | } |
| 522 | |
Werner Lemberg | 804e625 | 2020-10-28 13:34:52 +0100 | [diff] [blame] | 523 | /* new constraint in OpenType 1.8.4 */ |
| 524 | if ( itemStore->regionCount >= 32768U ) |
| 525 | { |
| 526 | FT_TRACE2(( "ft_var_load_item_variation_store:" |
| 527 | " too many variation region tables\n" )); |
| 528 | error = FT_THROW( Invalid_Table ); |
| 529 | goto Exit; |
| 530 | } |
| 531 | |
Werner Lemberg | 9c81470 | 2017-01-06 21:13:36 +0100 | [diff] [blame] | 532 | if ( FT_NEW_ARRAY( itemStore->varRegionList, itemStore->regionCount ) ) |
| 533 | goto Exit; |
| 534 | |
| 535 | for ( i = 0; i < itemStore->regionCount; i++ ) |
| 536 | { |
| 537 | GX_AxisCoords axisCoords; |
| 538 | |
| 539 | |
| 540 | if ( FT_NEW_ARRAY( itemStore->varRegionList[i].axisList, |
| 541 | itemStore->axisCount ) ) |
| 542 | goto Exit; |
| 543 | |
| 544 | axisCoords = itemStore->varRegionList[i].axisList; |
| 545 | |
| 546 | for ( j = 0; j < itemStore->axisCount; j++ ) |
| 547 | { |
| 548 | FT_Short start, peak, end; |
| 549 | |
| 550 | |
| 551 | if ( FT_READ_SHORT( start ) || |
| 552 | FT_READ_SHORT( peak ) || |
| 553 | FT_READ_SHORT( end ) ) |
| 554 | goto Exit; |
| 555 | |
| 556 | axisCoords[j].startCoord = FT_fdot14ToFixed( start ); |
| 557 | axisCoords[j].peakCoord = FT_fdot14ToFixed( peak ); |
| 558 | axisCoords[j].endCoord = FT_fdot14ToFixed( end ); |
| 559 | } |
| 560 | } |
| 561 | |
| 562 | /* end of region list parse */ |
| 563 | |
| 564 | /* use dataOffsetArray now to parse varData items */ |
| 565 | if ( FT_NEW_ARRAY( itemStore->varData, itemStore->dataCount ) ) |
| 566 | goto Exit; |
| 567 | |
| 568 | for ( i = 0; i < itemStore->dataCount; i++ ) |
| 569 | { |
Werner Lemberg | fb90f00 | 2017-01-06 22:23:52 +0100 | [diff] [blame] | 570 | varData = &itemStore->varData[i]; |
Werner Lemberg | 9c81470 | 2017-01-06 21:13:36 +0100 | [diff] [blame] | 571 | |
| 572 | if ( FT_STREAM_SEEK( offset + dataOffsetArray[i] ) ) |
| 573 | goto Exit; |
| 574 | |
Werner Lemberg | fb90f00 | 2017-01-06 22:23:52 +0100 | [diff] [blame] | 575 | if ( FT_READ_USHORT( varData->itemCount ) || |
Werner Lemberg | e4f7673 | 2021-11-13 21:11:00 +0100 | [diff] [blame] | 576 | FT_READ_USHORT( wordDeltaCount ) || |
Werner Lemberg | fb90f00 | 2017-01-06 22:23:52 +0100 | [diff] [blame] | 577 | FT_READ_USHORT( varData->regionIdxCount ) ) |
Werner Lemberg | 9c81470 | 2017-01-06 21:13:36 +0100 | [diff] [blame] | 578 | goto Exit; |
| 579 | |
Werner Lemberg | e4f7673 | 2021-11-13 21:11:00 +0100 | [diff] [blame] | 580 | long_words = !!( wordDeltaCount & 0x8000 ); |
| 581 | wordDeltaCount &= 0x7FFF; |
| 582 | |
Werner Lemberg | 9c81470 | 2017-01-06 21:13:36 +0100 | [diff] [blame] | 583 | /* check some data consistency */ |
Werner Lemberg | e4f7673 | 2021-11-13 21:11:00 +0100 | [diff] [blame] | 584 | if ( wordDeltaCount > varData->regionIdxCount ) |
Werner Lemberg | 9c81470 | 2017-01-06 21:13:36 +0100 | [diff] [blame] | 585 | { |
| 586 | FT_TRACE2(( "bad short count %d or region count %d\n", |
Werner Lemberg | e4f7673 | 2021-11-13 21:11:00 +0100 | [diff] [blame] | 587 | wordDeltaCount, |
Werner Lemberg | fb90f00 | 2017-01-06 22:23:52 +0100 | [diff] [blame] | 588 | varData->regionIdxCount )); |
Werner Lemberg | 9c81470 | 2017-01-06 21:13:36 +0100 | [diff] [blame] | 589 | error = FT_THROW( Invalid_Table ); |
| 590 | goto Exit; |
| 591 | } |
| 592 | |
Werner Lemberg | fb90f00 | 2017-01-06 22:23:52 +0100 | [diff] [blame] | 593 | if ( varData->regionIdxCount > itemStore->regionCount ) |
Werner Lemberg | 9c81470 | 2017-01-06 21:13:36 +0100 | [diff] [blame] | 594 | { |
| 595 | FT_TRACE2(( "inconsistent regionCount %d in varData[%d]\n", |
Werner Lemberg | fb90f00 | 2017-01-06 22:23:52 +0100 | [diff] [blame] | 596 | varData->regionIdxCount, |
Werner Lemberg | 9c81470 | 2017-01-06 21:13:36 +0100 | [diff] [blame] | 597 | i )); |
| 598 | error = FT_THROW( Invalid_Table ); |
| 599 | goto Exit; |
| 600 | } |
| 601 | |
| 602 | /* parse region indices */ |
Werner Lemberg | fb90f00 | 2017-01-06 22:23:52 +0100 | [diff] [blame] | 603 | if ( FT_NEW_ARRAY( varData->regionIndices, |
| 604 | varData->regionIdxCount ) ) |
Werner Lemberg | 9c81470 | 2017-01-06 21:13:36 +0100 | [diff] [blame] | 605 | goto Exit; |
| 606 | |
Werner Lemberg | fb90f00 | 2017-01-06 22:23:52 +0100 | [diff] [blame] | 607 | for ( j = 0; j < varData->regionIdxCount; j++ ) |
Werner Lemberg | 9c81470 | 2017-01-06 21:13:36 +0100 | [diff] [blame] | 608 | { |
Werner Lemberg | fb90f00 | 2017-01-06 22:23:52 +0100 | [diff] [blame] | 609 | if ( FT_READ_USHORT( varData->regionIndices[j] ) ) |
Werner Lemberg | 9c81470 | 2017-01-06 21:13:36 +0100 | [diff] [blame] | 610 | goto Exit; |
| 611 | |
Werner Lemberg | fb90f00 | 2017-01-06 22:23:52 +0100 | [diff] [blame] | 612 | if ( varData->regionIndices[j] >= itemStore->regionCount ) |
Werner Lemberg | 9c81470 | 2017-01-06 21:13:36 +0100 | [diff] [blame] | 613 | { |
| 614 | FT_TRACE2(( "bad region index %d\n", |
Werner Lemberg | fb90f00 | 2017-01-06 22:23:52 +0100 | [diff] [blame] | 615 | varData->regionIndices[j] )); |
Werner Lemberg | 9c81470 | 2017-01-06 21:13:36 +0100 | [diff] [blame] | 616 | error = FT_THROW( Invalid_Table ); |
| 617 | goto Exit; |
| 618 | } |
| 619 | } |
| 620 | |
| 621 | /* Parse delta set. */ |
| 622 | /* */ |
Werner Lemberg | e4f7673 | 2021-11-13 21:11:00 +0100 | [diff] [blame] | 623 | /* On input, deltas are (wordDeltaCount + regionIdxCount) bytes */ |
| 624 | /* each if `long_words` isn't set, and twice as much otherwise. */ |
| 625 | /* */ |
| 626 | /* On output, deltas are expanded to `regionIdxCount` shorts each. */ |
Werner Lemberg | fb90f00 | 2017-01-06 22:23:52 +0100 | [diff] [blame] | 627 | if ( FT_NEW_ARRAY( varData->deltaSet, |
| 628 | varData->regionIdxCount * varData->itemCount ) ) |
Werner Lemberg | 9c81470 | 2017-01-06 21:13:36 +0100 | [diff] [blame] | 629 | goto Exit; |
| 630 | |
Werner Lemberg | e4f7673 | 2021-11-13 21:11:00 +0100 | [diff] [blame] | 631 | /* the delta set is stored as a 2-dimensional array of shorts */ |
| 632 | if ( long_words ) |
Werner Lemberg | 9c81470 | 2017-01-06 21:13:36 +0100 | [diff] [blame] | 633 | { |
Werner Lemberg | e4f7673 | 2021-11-13 21:11:00 +0100 | [diff] [blame] | 634 | /* new in OpenType 1.9, currently for 'COLR' table only; */ |
| 635 | /* the deltas are interpreted as 16.16 fixed-point scaling values */ |
| 636 | |
| 637 | /* not supported yet */ |
| 638 | |
| 639 | error = FT_THROW( Invalid_Table ); |
| 640 | goto Exit; |
| 641 | } |
| 642 | else |
| 643 | { |
| 644 | for ( j = 0; j < varData->itemCount * varData->regionIdxCount; ) |
Werner Lemberg | 9c81470 | 2017-01-06 21:13:36 +0100 | [diff] [blame] | 645 | { |
Werner Lemberg | e4f7673 | 2021-11-13 21:11:00 +0100 | [diff] [blame] | 646 | for ( k = 0; k < wordDeltaCount; k++, j++ ) |
| 647 | { |
| 648 | /* read the short deltas */ |
| 649 | FT_Short delta; |
Werner Lemberg | 9c81470 | 2017-01-06 21:13:36 +0100 | [diff] [blame] | 650 | |
| 651 | |
Werner Lemberg | e4f7673 | 2021-11-13 21:11:00 +0100 | [diff] [blame] | 652 | if ( FT_READ_SHORT( delta ) ) |
| 653 | goto Exit; |
Werner Lemberg | 9c81470 | 2017-01-06 21:13:36 +0100 | [diff] [blame] | 654 | |
Werner Lemberg | e4f7673 | 2021-11-13 21:11:00 +0100 | [diff] [blame] | 655 | varData->deltaSet[j] = delta; |
| 656 | } |
Werner Lemberg | 9c81470 | 2017-01-06 21:13:36 +0100 | [diff] [blame] | 657 | |
Werner Lemberg | e4f7673 | 2021-11-13 21:11:00 +0100 | [diff] [blame] | 658 | for ( ; k < varData->regionIdxCount; k++, j++ ) |
| 659 | { |
| 660 | /* read the (signed) byte deltas */ |
| 661 | FT_Char delta; |
Werner Lemberg | 9c81470 | 2017-01-06 21:13:36 +0100 | [diff] [blame] | 662 | |
| 663 | |
Werner Lemberg | e4f7673 | 2021-11-13 21:11:00 +0100 | [diff] [blame] | 664 | if ( FT_READ_CHAR( delta ) ) |
| 665 | goto Exit; |
Werner Lemberg | 9c81470 | 2017-01-06 21:13:36 +0100 | [diff] [blame] | 666 | |
Werner Lemberg | e4f7673 | 2021-11-13 21:11:00 +0100 | [diff] [blame] | 667 | varData->deltaSet[j] = delta; |
| 668 | } |
Werner Lemberg | 9c81470 | 2017-01-06 21:13:36 +0100 | [diff] [blame] | 669 | } |
| 670 | } |
| 671 | } |
| 672 | |
| 673 | Exit: |
| 674 | FT_FREE( dataOffsetArray ); |
| 675 | |
| 676 | return error; |
| 677 | } |
| 678 | |
| 679 | |
| 680 | static FT_Error |
Werner Lemberg | fb90f00 | 2017-01-06 22:23:52 +0100 | [diff] [blame] | 681 | ft_var_load_delta_set_index_mapping( TT_Face face, |
| 682 | FT_ULong offset, |
| 683 | GX_DeltaSetIdxMap map, |
Werner Lemberg | 93e6b3e | 2021-11-13 14:41:40 +0100 | [diff] [blame] | 684 | GX_ItemVarStore itemStore, |
| 685 | FT_ULong table_len ) |
Werner Lemberg | 9c81470 | 2017-01-06 21:13:36 +0100 | [diff] [blame] | 686 | { |
| 687 | FT_Stream stream = FT_FACE_STREAM( face ); |
| 688 | FT_Memory memory = stream->memory; |
| 689 | |
Werner Lemberg | 93e6b3e | 2021-11-13 14:41:40 +0100 | [diff] [blame] | 690 | FT_Error error; |
Werner Lemberg | 9c81470 | 2017-01-06 21:13:36 +0100 | [diff] [blame] | 691 | |
Werner Lemberg | 93e6b3e | 2021-11-13 14:41:40 +0100 | [diff] [blame] | 692 | FT_Byte format; |
| 693 | FT_Byte entryFormat; |
| 694 | FT_UInt entrySize; |
| 695 | FT_UInt innerBitCount; |
| 696 | FT_UInt innerIndexMask; |
| 697 | FT_ULong i; |
| 698 | FT_UInt j; |
Werner Lemberg | 9c81470 | 2017-01-06 21:13:36 +0100 | [diff] [blame] | 699 | |
| 700 | |
Werner Lemberg | 93e6b3e | 2021-11-13 14:41:40 +0100 | [diff] [blame] | 701 | if ( FT_STREAM_SEEK( offset ) || |
| 702 | FT_READ_BYTE( format ) || |
| 703 | FT_READ_BYTE( entryFormat ) ) |
Werner Lemberg | 9c81470 | 2017-01-06 21:13:36 +0100 | [diff] [blame] | 704 | goto Exit; |
| 705 | |
Werner Lemberg | 93e6b3e | 2021-11-13 14:41:40 +0100 | [diff] [blame] | 706 | if ( format == 0 ) |
| 707 | { |
| 708 | if ( FT_READ_USHORT( map->mapCount ) ) |
| 709 | goto Exit; |
| 710 | } |
| 711 | else if ( format == 1 ) /* new in OpenType 1.9 */ |
| 712 | { |
| 713 | if ( FT_READ_ULONG( map->mapCount ) ) |
| 714 | goto Exit; |
| 715 | } |
| 716 | else |
Werner Lemberg | 9c81470 | 2017-01-06 21:13:36 +0100 | [diff] [blame] | 717 | { |
| 718 | FT_TRACE2(( "bad map format %d\n", format )); |
| 719 | error = FT_THROW( Invalid_Table ); |
| 720 | goto Exit; |
| 721 | } |
| 722 | |
Werner Lemberg | 93e6b3e | 2021-11-13 14:41:40 +0100 | [diff] [blame] | 723 | if ( entryFormat & 0xC0 ) |
| 724 | { |
| 725 | FT_TRACE2(( "bad entry format %d\n", format )); |
| 726 | error = FT_THROW( Invalid_Table ); |
| 727 | goto Exit; |
| 728 | } |
| 729 | |
Werner Lemberg | 9c81470 | 2017-01-06 21:13:36 +0100 | [diff] [blame] | 730 | /* bytes per entry: 1, 2, 3, or 4 */ |
Werner Lemberg | 93e6b3e | 2021-11-13 14:41:40 +0100 | [diff] [blame] | 731 | entrySize = ( ( entryFormat & 0x30 ) >> 4 ) + 1; |
| 732 | innerBitCount = ( entryFormat & 0x0F ) + 1; |
Werner Lemberg | 9c81470 | 2017-01-06 21:13:36 +0100 | [diff] [blame] | 733 | innerIndexMask = ( 1 << innerBitCount ) - 1; |
| 734 | |
Werner Lemberg | 93e6b3e | 2021-11-13 14:41:40 +0100 | [diff] [blame] | 735 | /* rough sanity check */ |
| 736 | if ( map->mapCount * entrySize > table_len ) |
| 737 | { |
| 738 | FT_TRACE1(( "ft_var_load_delta_set_index_mapping:" |
| 739 | " invalid number of delta-set index mappings\n" )); |
| 740 | error = FT_THROW( Invalid_Table ); |
| 741 | goto Exit; |
| 742 | } |
| 743 | |
Werner Lemberg | fb90f00 | 2017-01-06 22:23:52 +0100 | [diff] [blame] | 744 | if ( FT_NEW_ARRAY( map->innerIndex, map->mapCount ) ) |
Werner Lemberg | 9c81470 | 2017-01-06 21:13:36 +0100 | [diff] [blame] | 745 | goto Exit; |
| 746 | |
Werner Lemberg | fb90f00 | 2017-01-06 22:23:52 +0100 | [diff] [blame] | 747 | if ( FT_NEW_ARRAY( map->outerIndex, map->mapCount ) ) |
Werner Lemberg | 9c81470 | 2017-01-06 21:13:36 +0100 | [diff] [blame] | 748 | goto Exit; |
| 749 | |
Werner Lemberg | fb90f00 | 2017-01-06 22:23:52 +0100 | [diff] [blame] | 750 | for ( i = 0; i < map->mapCount; i++ ) |
Werner Lemberg | 9c81470 | 2017-01-06 21:13:36 +0100 | [diff] [blame] | 751 | { |
| 752 | FT_UInt mapData = 0; |
| 753 | FT_UInt outerIndex, innerIndex; |
| 754 | |
| 755 | |
| 756 | /* read map data one unsigned byte at a time, big endian */ |
| 757 | for ( j = 0; j < entrySize; j++ ) |
| 758 | { |
| 759 | FT_Byte data; |
| 760 | |
| 761 | |
| 762 | if ( FT_READ_BYTE( data ) ) |
| 763 | goto Exit; |
| 764 | |
| 765 | mapData = ( mapData << 8 ) | data; |
| 766 | } |
| 767 | |
| 768 | outerIndex = mapData >> innerBitCount; |
| 769 | |
Werner Lemberg | fb90f00 | 2017-01-06 22:23:52 +0100 | [diff] [blame] | 770 | if ( outerIndex >= itemStore->dataCount ) |
Werner Lemberg | 9c81470 | 2017-01-06 21:13:36 +0100 | [diff] [blame] | 771 | { |
Werner Lemberg | 93e6b3e | 2021-11-13 14:41:40 +0100 | [diff] [blame] | 772 | FT_TRACE2(( "outerIndex[%ld] == %d out of range\n", |
Werner Lemberg | 9c81470 | 2017-01-06 21:13:36 +0100 | [diff] [blame] | 773 | i, |
| 774 | outerIndex )); |
| 775 | error = FT_THROW( Invalid_Table ); |
| 776 | goto Exit; |
| 777 | } |
| 778 | |
Werner Lemberg | fb90f00 | 2017-01-06 22:23:52 +0100 | [diff] [blame] | 779 | map->outerIndex[i] = outerIndex; |
Werner Lemberg | 9c81470 | 2017-01-06 21:13:36 +0100 | [diff] [blame] | 780 | |
| 781 | innerIndex = mapData & innerIndexMask; |
| 782 | |
Werner Lemberg | fb90f00 | 2017-01-06 22:23:52 +0100 | [diff] [blame] | 783 | if ( innerIndex >= itemStore->varData[outerIndex].itemCount ) |
Werner Lemberg | 9c81470 | 2017-01-06 21:13:36 +0100 | [diff] [blame] | 784 | { |
Werner Lemberg | 93e6b3e | 2021-11-13 14:41:40 +0100 | [diff] [blame] | 785 | FT_TRACE2(( "innerIndex[%ld] == %d out of range\n", |
Werner Lemberg | 9c81470 | 2017-01-06 21:13:36 +0100 | [diff] [blame] | 786 | i, |
| 787 | innerIndex )); |
| 788 | error = FT_THROW( Invalid_Table ); |
| 789 | goto Exit; |
| 790 | } |
| 791 | |
Werner Lemberg | fb90f00 | 2017-01-06 22:23:52 +0100 | [diff] [blame] | 792 | map->innerIndex[i] = innerIndex; |
Werner Lemberg | 9c81470 | 2017-01-06 21:13:36 +0100 | [diff] [blame] | 793 | } |
| 794 | |
| 795 | Exit: |
| 796 | return error; |
| 797 | } |
| 798 | |
| 799 | |
Werner Lemberg | 9ac9060 | 2018-06-03 09:01:17 +0200 | [diff] [blame] | 800 | /************************************************************************** |
| 801 | * |
| 802 | * @Function: |
| 803 | * ft_var_load_hvvar |
| 804 | * |
| 805 | * @Description: |
| 806 | * If `vertical' is zero, parse the `HVAR' table and set |
| 807 | * `blend->hvar_loaded' to TRUE. On success, `blend->hvar_checked' |
| 808 | * is set to TRUE. |
| 809 | * |
| 810 | * If `vertical' is not zero, parse the `VVAR' table and set |
| 811 | * `blend->vvar_loaded' to TRUE. On success, `blend->vvar_checked' |
| 812 | * is set to TRUE. |
| 813 | * |
| 814 | * Some memory may remain allocated on error; it is always freed in |
| 815 | * `tt_done_blend', however. |
| 816 | * |
| 817 | * @InOut: |
| 818 | * face :: |
| 819 | * The font face. |
| 820 | * |
| 821 | * @Return: |
| 822 | * FreeType error code. 0 means success. |
| 823 | */ |
Dave Arnold | 097cd87 | 2016-12-15 12:58:26 +0100 | [diff] [blame] | 824 | static FT_Error |
Werner Lemberg | faa3c88 | 2017-02-06 13:13:02 +0100 | [diff] [blame] | 825 | ft_var_load_hvvar( TT_Face face, |
| 826 | FT_Bool vertical ) |
Dave Arnold | 097cd87 | 2016-12-15 12:58:26 +0100 | [diff] [blame] | 827 | { |
| 828 | FT_Stream stream = FT_FACE_STREAM( face ); |
Werner Lemberg | fb90f00 | 2017-01-06 22:23:52 +0100 | [diff] [blame] | 829 | FT_Memory memory = stream->memory; |
Dave Arnold | 097cd87 | 2016-12-15 12:58:26 +0100 | [diff] [blame] | 830 | |
| 831 | GX_Blend blend = face->blend; |
| 832 | |
Werner Lemberg | faa3c88 | 2017-02-06 13:13:02 +0100 | [diff] [blame] | 833 | GX_HVVarTable table; |
| 834 | |
Dave Arnold | 097cd87 | 2016-12-15 12:58:26 +0100 | [diff] [blame] | 835 | FT_Error error; |
| 836 | FT_UShort majorVersion; |
Dave Arnold | 097cd87 | 2016-12-15 12:58:26 +0100 | [diff] [blame] | 837 | FT_ULong table_len; |
| 838 | FT_ULong table_offset; |
| 839 | FT_ULong store_offset; |
Werner Lemberg | 7e1cce5 | 2017-01-06 20:31:22 +0100 | [diff] [blame] | 840 | FT_ULong widthMap_offset; |
Dave Arnold | 097cd87 | 2016-12-15 12:58:26 +0100 | [diff] [blame] | 841 | |
Dave Arnold | 097cd87 | 2016-12-15 12:58:26 +0100 | [diff] [blame] | 842 | |
Werner Lemberg | faa3c88 | 2017-02-06 13:13:02 +0100 | [diff] [blame] | 843 | if ( vertical ) |
| 844 | { |
| 845 | blend->vvar_loaded = TRUE; |
Dave Arnold | 097cd87 | 2016-12-15 12:58:26 +0100 | [diff] [blame] | 846 | |
Werner Lemberg | faa3c88 | 2017-02-06 13:13:02 +0100 | [diff] [blame] | 847 | FT_TRACE2(( "VVAR " )); |
Dave Arnold | 097cd87 | 2016-12-15 12:58:26 +0100 | [diff] [blame] | 848 | |
Werner Lemberg | faa3c88 | 2017-02-06 13:13:02 +0100 | [diff] [blame] | 849 | error = face->goto_table( face, TTAG_VVAR, stream, &table_len ); |
| 850 | } |
| 851 | else |
| 852 | { |
| 853 | blend->hvar_loaded = TRUE; |
| 854 | |
| 855 | FT_TRACE2(( "HVAR " )); |
| 856 | |
| 857 | error = face->goto_table( face, TTAG_HVAR, stream, &table_len ); |
| 858 | } |
| 859 | |
Dave Arnold | 097cd87 | 2016-12-15 12:58:26 +0100 | [diff] [blame] | 860 | if ( error ) |
| 861 | { |
| 862 | FT_TRACE2(( "is missing\n" )); |
| 863 | goto Exit; |
| 864 | } |
| 865 | |
| 866 | table_offset = FT_STREAM_POS(); |
| 867 | |
Werner Lemberg | 6862024 | 2016-12-16 11:15:17 +0100 | [diff] [blame] | 868 | /* skip minor version */ |
Dave Arnold | 097cd87 | 2016-12-15 12:58:26 +0100 | [diff] [blame] | 869 | if ( FT_READ_USHORT( majorVersion ) || |
Werner Lemberg | 6862024 | 2016-12-16 11:15:17 +0100 | [diff] [blame] | 870 | FT_STREAM_SKIP( 2 ) ) |
Dave Arnold | 097cd87 | 2016-12-15 12:58:26 +0100 | [diff] [blame] | 871 | goto Exit; |
Werner Lemberg | 07ee1d2 | 2017-01-11 12:50:51 +0100 | [diff] [blame] | 872 | |
Dave Arnold | 097cd87 | 2016-12-15 12:58:26 +0100 | [diff] [blame] | 873 | if ( majorVersion != 1 ) |
| 874 | { |
| 875 | FT_TRACE2(( "bad table version %d\n", majorVersion )); |
| 876 | error = FT_THROW( Invalid_Table ); |
| 877 | goto Exit; |
| 878 | } |
| 879 | |
Werner Lemberg | 7e1cce5 | 2017-01-06 20:31:22 +0100 | [diff] [blame] | 880 | if ( FT_READ_ULONG( store_offset ) || |
| 881 | FT_READ_ULONG( widthMap_offset ) ) |
Dave Arnold | 097cd87 | 2016-12-15 12:58:26 +0100 | [diff] [blame] | 882 | goto Exit; |
| 883 | |
Werner Lemberg | faa3c88 | 2017-02-06 13:13:02 +0100 | [diff] [blame] | 884 | if ( vertical ) |
| 885 | { |
| 886 | if ( FT_NEW( blend->vvar_table ) ) |
| 887 | goto Exit; |
| 888 | table = blend->vvar_table; |
| 889 | } |
| 890 | else |
| 891 | { |
| 892 | if ( FT_NEW( blend->hvar_table ) ) |
| 893 | goto Exit; |
| 894 | table = blend->hvar_table; |
| 895 | } |
Werner Lemberg | fb90f00 | 2017-01-06 22:23:52 +0100 | [diff] [blame] | 896 | |
Werner Lemberg | 9c81470 | 2017-01-06 21:13:36 +0100 | [diff] [blame] | 897 | error = ft_var_load_item_variation_store( |
| 898 | face, |
Werner Lemberg | fb90f00 | 2017-01-06 22:23:52 +0100 | [diff] [blame] | 899 | table_offset + store_offset, |
Werner Lemberg | faa3c88 | 2017-02-06 13:13:02 +0100 | [diff] [blame] | 900 | &table->itemStore ); |
Werner Lemberg | 9c81470 | 2017-01-06 21:13:36 +0100 | [diff] [blame] | 901 | if ( error ) |
| 902 | goto Exit; |
Dave Arnold | 097cd87 | 2016-12-15 12:58:26 +0100 | [diff] [blame] | 903 | |
Werner Lemberg | 7e1cce5 | 2017-01-06 20:31:22 +0100 | [diff] [blame] | 904 | if ( widthMap_offset ) |
Dave Arnold | 097cd87 | 2016-12-15 12:58:26 +0100 | [diff] [blame] | 905 | { |
Werner Lemberg | 9c81470 | 2017-01-06 21:13:36 +0100 | [diff] [blame] | 906 | error = ft_var_load_delta_set_index_mapping( |
| 907 | face, |
Werner Lemberg | fb90f00 | 2017-01-06 22:23:52 +0100 | [diff] [blame] | 908 | table_offset + widthMap_offset, |
Werner Lemberg | faa3c88 | 2017-02-06 13:13:02 +0100 | [diff] [blame] | 909 | &table->widthMap, |
Werner Lemberg | 93e6b3e | 2021-11-13 14:41:40 +0100 | [diff] [blame] | 910 | &table->itemStore, |
| 911 | table_len ); |
Werner Lemberg | 9c81470 | 2017-01-06 21:13:36 +0100 | [diff] [blame] | 912 | if ( error ) |
Dave Arnold | 097cd87 | 2016-12-15 12:58:26 +0100 | [diff] [blame] | 913 | goto Exit; |
Dave Arnold | 097cd87 | 2016-12-15 12:58:26 +0100 | [diff] [blame] | 914 | } |
| 915 | |
Dave Arnold | 097cd87 | 2016-12-15 12:58:26 +0100 | [diff] [blame] | 916 | FT_TRACE2(( "loaded\n" )); |
| 917 | error = FT_Err_Ok; |
| 918 | |
| 919 | Exit: |
Dave Arnold | 097cd87 | 2016-12-15 12:58:26 +0100 | [diff] [blame] | 920 | if ( !error ) |
Werner Lemberg | 64a9113 | 2016-12-21 19:30:33 +0100 | [diff] [blame] | 921 | { |
Werner Lemberg | faa3c88 | 2017-02-06 13:13:02 +0100 | [diff] [blame] | 922 | if ( vertical ) |
| 923 | { |
| 924 | blend->vvar_checked = TRUE; |
Dave Arnold | 097cd87 | 2016-12-15 12:58:26 +0100 | [diff] [blame] | 925 | |
Werner Lemberg | faa3c88 | 2017-02-06 13:13:02 +0100 | [diff] [blame] | 926 | /* FreeType doesn't provide functions to quickly retrieve */ |
| 927 | /* TSB, BSB, or VORG values; we thus don't have to implement */ |
| 928 | /* support for those three item variation stores. */ |
Werner Lemberg | 348d39c | 2017-01-05 12:29:55 +0100 | [diff] [blame] | 929 | |
Werner Lemberg | faa3c88 | 2017-02-06 13:13:02 +0100 | [diff] [blame] | 930 | face->variation_support |= TT_FACE_FLAG_VAR_VADVANCE; |
| 931 | } |
| 932 | else |
| 933 | { |
| 934 | blend->hvar_checked = TRUE; |
| 935 | |
| 936 | /* FreeType doesn't provide functions to quickly retrieve */ |
| 937 | /* LSB or RSB values; we thus don't have to implement */ |
| 938 | /* support for those two item variation stores. */ |
| 939 | |
| 940 | face->variation_support |= TT_FACE_FLAG_VAR_HADVANCE; |
| 941 | } |
Werner Lemberg | 64a9113 | 2016-12-21 19:30:33 +0100 | [diff] [blame] | 942 | } |
| 943 | |
Dave Arnold | 097cd87 | 2016-12-15 12:58:26 +0100 | [diff] [blame] | 944 | return error; |
| 945 | } |
| 946 | |
| 947 | |
Werner Lemberg | 469ced7 | 2017-01-08 09:28:34 +0100 | [diff] [blame] | 948 | static FT_Int |
| 949 | ft_var_get_item_delta( TT_Face face, |
| 950 | GX_ItemVarStore itemStore, |
| 951 | FT_UInt outerIndex, |
| 952 | FT_UInt innerIndex ) |
Dave Arnold | aa0c4b4 | 2016-12-15 14:04:51 +0100 | [diff] [blame] | 953 | { |
Werner Lemberg | 0bd0112 | 2017-01-06 21:32:49 +0100 | [diff] [blame] | 954 | GX_ItemVarData varData; |
Werner Lemberg | 469ced7 | 2017-01-08 09:28:34 +0100 | [diff] [blame] | 955 | FT_Short* deltaSet; |
Dave Arnold | aa0c4b4 | 2016-12-15 14:04:51 +0100 | [diff] [blame] | 956 | |
Werner Lemberg | 469ced7 | 2017-01-08 09:28:34 +0100 | [diff] [blame] | 957 | FT_UInt master, j; |
| 958 | FT_Fixed netAdjustment = 0; /* accumulated adjustment */ |
| 959 | FT_Fixed scaledDelta; |
| 960 | FT_Fixed delta; |
Dave Arnold | aa0c4b4 | 2016-12-15 14:04:51 +0100 | [diff] [blame] | 961 | |
| 962 | |
Dave Arnold | aa0c4b4 | 2016-12-15 14:04:51 +0100 | [diff] [blame] | 963 | /* See pseudo code from `Font Variations Overview' */ |
| 964 | /* in the OpenType specification. */ |
| 965 | |
Werner Lemberg | 469ced7 | 2017-01-08 09:28:34 +0100 | [diff] [blame] | 966 | varData = &itemStore->varData[outerIndex]; |
| 967 | deltaSet = &varData->deltaSet[varData->regionIdxCount * innerIndex]; |
| 968 | |
Dave Arnold | aa0c4b4 | 2016-12-15 14:04:51 +0100 | [diff] [blame] | 969 | /* outer loop steps through master designs to be blended */ |
| 970 | for ( master = 0; master < varData->regionIdxCount; master++ ) |
| 971 | { |
Alexei Podtelezhnikov | 61d5075 | 2018-11-02 20:42:25 -0400 | [diff] [blame] | 972 | FT_Fixed scalar = 0x10000L; |
Dave Arnold | aa0c4b4 | 2016-12-15 14:04:51 +0100 | [diff] [blame] | 973 | FT_UInt regionIndex = varData->regionIndices[master]; |
| 974 | |
Werner Lemberg | 469ced7 | 2017-01-08 09:28:34 +0100 | [diff] [blame] | 975 | GX_AxisCoords axis = itemStore->varRegionList[regionIndex].axisList; |
Dave Arnold | aa0c4b4 | 2016-12-15 14:04:51 +0100 | [diff] [blame] | 976 | |
| 977 | |
| 978 | /* inner loop steps through axes in this region */ |
Werner Lemberg | 469ced7 | 2017-01-08 09:28:34 +0100 | [diff] [blame] | 979 | for ( j = 0; j < itemStore->axisCount; j++, axis++ ) |
Dave Arnold | aa0c4b4 | 2016-12-15 14:04:51 +0100 | [diff] [blame] | 980 | { |
Dave Arnold | aa0c4b4 | 2016-12-15 14:04:51 +0100 | [diff] [blame] | 981 | /* compute the scalar contribution of this axis; */ |
| 982 | /* ignore invalid ranges */ |
| 983 | if ( axis->startCoord > axis->peakCoord || |
| 984 | axis->peakCoord > axis->endCoord ) |
Alexei Podtelezhnikov | 300da33 | 2018-10-31 21:55:40 -0400 | [diff] [blame] | 985 | continue; |
Dave Arnold | aa0c4b4 | 2016-12-15 14:04:51 +0100 | [diff] [blame] | 986 | |
| 987 | else if ( axis->startCoord < 0 && |
| 988 | axis->endCoord > 0 && |
| 989 | axis->peakCoord != 0 ) |
Alexei Podtelezhnikov | 300da33 | 2018-10-31 21:55:40 -0400 | [diff] [blame] | 990 | continue; |
Dave Arnold | aa0c4b4 | 2016-12-15 14:04:51 +0100 | [diff] [blame] | 991 | |
| 992 | /* peak of 0 means ignore this axis */ |
| 993 | else if ( axis->peakCoord == 0 ) |
Alexei Podtelezhnikov | 300da33 | 2018-10-31 21:55:40 -0400 | [diff] [blame] | 994 | continue; |
Dave Arnold | aa0c4b4 | 2016-12-15 14:04:51 +0100 | [diff] [blame] | 995 | |
Alexei Podtelezhnikov | 61d5075 | 2018-11-02 20:42:25 -0400 | [diff] [blame] | 996 | else if ( face->blend->normalizedcoords[j] == axis->peakCoord ) |
| 997 | continue; |
| 998 | |
Dave Arnold | aa0c4b4 | 2016-12-15 14:04:51 +0100 | [diff] [blame] | 999 | /* ignore this region if coords are out of range */ |
Alexei Podtelezhnikov | 300da33 | 2018-10-31 21:55:40 -0400 | [diff] [blame] | 1000 | else if ( face->blend->normalizedcoords[j] <= axis->startCoord || |
| 1001 | face->blend->normalizedcoords[j] >= axis->endCoord ) |
Dave Arnold | aa0c4b4 | 2016-12-15 14:04:51 +0100 | [diff] [blame] | 1002 | { |
Alexei Podtelezhnikov | 300da33 | 2018-10-31 21:55:40 -0400 | [diff] [blame] | 1003 | scalar = 0; |
| 1004 | break; |
Dave Arnold | aa0c4b4 | 2016-12-15 14:04:51 +0100 | [diff] [blame] | 1005 | } |
| 1006 | |
Alexei Podtelezhnikov | 300da33 | 2018-10-31 21:55:40 -0400 | [diff] [blame] | 1007 | /* cumulative product of all the axis scalars */ |
| 1008 | else if ( face->blend->normalizedcoords[j] < axis->peakCoord ) |
| 1009 | scalar = |
| 1010 | FT_MulDiv( scalar, |
| 1011 | face->blend->normalizedcoords[j] - axis->startCoord, |
| 1012 | axis->peakCoord - axis->startCoord ); |
| 1013 | else |
| 1014 | scalar = |
| 1015 | FT_MulDiv( scalar, |
| 1016 | axis->endCoord - face->blend->normalizedcoords[j], |
| 1017 | axis->endCoord - axis->peakCoord ); |
Dave Arnold | aa0c4b4 | 2016-12-15 14:04:51 +0100 | [diff] [blame] | 1018 | } /* per-axis loop */ |
| 1019 | |
Dave Arnold | aa0c4b4 | 2016-12-15 14:04:51 +0100 | [diff] [blame] | 1020 | /* get the scaled delta for this region */ |
| 1021 | delta = FT_intToFixed( deltaSet[master] ); |
| 1022 | scaledDelta = FT_MulFix( scalar, delta ); |
| 1023 | |
| 1024 | /* accumulate the adjustments from each region */ |
| 1025 | netAdjustment = netAdjustment + scaledDelta; |
| 1026 | |
| 1027 | } /* per-region loop */ |
| 1028 | |
Werner Lemberg | 469ced7 | 2017-01-08 09:28:34 +0100 | [diff] [blame] | 1029 | return FT_fixedToInt( netAdjustment ); |
| 1030 | } |
| 1031 | |
| 1032 | |
Werner Lemberg | 9ac9060 | 2018-06-03 09:01:17 +0200 | [diff] [blame] | 1033 | /************************************************************************** |
| 1034 | * |
| 1035 | * @Function: |
| 1036 | * tt_hvadvance_adjust |
| 1037 | * |
| 1038 | * @Description: |
| 1039 | * Apply `HVAR' advance width or `VVAR' advance height adjustment of |
| 1040 | * a given glyph. |
| 1041 | * |
| 1042 | * @Input: |
| 1043 | * gindex :: |
| 1044 | * The glyph index. |
| 1045 | * |
| 1046 | * vertical :: |
| 1047 | * If set, handle `VVAR' table. |
| 1048 | * |
| 1049 | * @InOut: |
| 1050 | * face :: |
| 1051 | * The font face. |
| 1052 | * |
| 1053 | * adelta :: |
| 1054 | * Points to width or height value that gets modified. |
| 1055 | */ |
Werner Lemberg | faa3c88 | 2017-02-06 13:13:02 +0100 | [diff] [blame] | 1056 | static FT_Error |
| 1057 | tt_hvadvance_adjust( TT_Face face, |
| 1058 | FT_UInt gindex, |
| 1059 | FT_Int *avalue, |
| 1060 | FT_Bool vertical ) |
Werner Lemberg | 469ced7 | 2017-01-08 09:28:34 +0100 | [diff] [blame] | 1061 | { |
| 1062 | FT_Error error = FT_Err_Ok; |
| 1063 | FT_UInt innerIndex, outerIndex; |
| 1064 | FT_Int delta; |
| 1065 | |
Werner Lemberg | faa3c88 | 2017-02-06 13:13:02 +0100 | [diff] [blame] | 1066 | GX_HVVarTable table; |
| 1067 | |
Werner Lemberg | 469ced7 | 2017-01-08 09:28:34 +0100 | [diff] [blame] | 1068 | |
| 1069 | if ( !face->doblend || !face->blend ) |
| 1070 | goto Exit; |
| 1071 | |
Werner Lemberg | faa3c88 | 2017-02-06 13:13:02 +0100 | [diff] [blame] | 1072 | if ( vertical ) |
Werner Lemberg | 469ced7 | 2017-01-08 09:28:34 +0100 | [diff] [blame] | 1073 | { |
Werner Lemberg | faa3c88 | 2017-02-06 13:13:02 +0100 | [diff] [blame] | 1074 | if ( !face->blend->vvar_loaded ) |
| 1075 | { |
| 1076 | /* initialize vvar table */ |
| 1077 | face->blend->vvar_error = ft_var_load_hvvar( face, 1 ); |
| 1078 | } |
| 1079 | |
| 1080 | if ( !face->blend->vvar_checked ) |
| 1081 | { |
| 1082 | error = face->blend->vvar_error; |
| 1083 | goto Exit; |
| 1084 | } |
| 1085 | |
| 1086 | table = face->blend->vvar_table; |
| 1087 | } |
| 1088 | else |
| 1089 | { |
| 1090 | if ( !face->blend->hvar_loaded ) |
| 1091 | { |
| 1092 | /* initialize hvar table */ |
| 1093 | face->blend->hvar_error = ft_var_load_hvvar( face, 0 ); |
| 1094 | } |
| 1095 | |
| 1096 | if ( !face->blend->hvar_checked ) |
| 1097 | { |
| 1098 | error = face->blend->hvar_error; |
| 1099 | goto Exit; |
| 1100 | } |
| 1101 | |
| 1102 | table = face->blend->hvar_table; |
Werner Lemberg | 469ced7 | 2017-01-08 09:28:34 +0100 | [diff] [blame] | 1103 | } |
| 1104 | |
Werner Lemberg | faa3c88 | 2017-02-06 13:13:02 +0100 | [diff] [blame] | 1105 | /* advance width or height adjustments are always present in an */ |
| 1106 | /* `HVAR' or `VVAR' table; no need to test for this capability */ |
Werner Lemberg | 469ced7 | 2017-01-08 09:28:34 +0100 | [diff] [blame] | 1107 | |
Werner Lemberg | faa3c88 | 2017-02-06 13:13:02 +0100 | [diff] [blame] | 1108 | if ( table->widthMap.innerIndex ) |
Werner Lemberg | 469ced7 | 2017-01-08 09:28:34 +0100 | [diff] [blame] | 1109 | { |
Werner Lemberg | da38be8 | 2017-03-30 13:24:03 +0200 | [diff] [blame] | 1110 | FT_UInt idx = gindex; |
| 1111 | |
| 1112 | |
| 1113 | if ( idx >= table->widthMap.mapCount ) |
| 1114 | idx = table->widthMap.mapCount - 1; |
Werner Lemberg | 469ced7 | 2017-01-08 09:28:34 +0100 | [diff] [blame] | 1115 | |
| 1116 | /* trust that HVAR parser has checked indices */ |
Werner Lemberg | da38be8 | 2017-03-30 13:24:03 +0200 | [diff] [blame] | 1117 | outerIndex = table->widthMap.outerIndex[idx]; |
| 1118 | innerIndex = table->widthMap.innerIndex[idx]; |
Werner Lemberg | 469ced7 | 2017-01-08 09:28:34 +0100 | [diff] [blame] | 1119 | } |
| 1120 | else |
| 1121 | { |
| 1122 | GX_ItemVarData varData; |
| 1123 | |
| 1124 | |
| 1125 | /* no widthMap data */ |
| 1126 | outerIndex = 0; |
| 1127 | innerIndex = gindex; |
| 1128 | |
Werner Lemberg | faa3c88 | 2017-02-06 13:13:02 +0100 | [diff] [blame] | 1129 | varData = &table->itemStore.varData[outerIndex]; |
Werner Lemberg | 469ced7 | 2017-01-08 09:28:34 +0100 | [diff] [blame] | 1130 | if ( gindex >= varData->itemCount ) |
| 1131 | { |
| 1132 | FT_TRACE2(( "gindex %d out of range\n", gindex )); |
| 1133 | error = FT_THROW( Invalid_Argument ); |
| 1134 | goto Exit; |
| 1135 | } |
| 1136 | } |
| 1137 | |
| 1138 | delta = ft_var_get_item_delta( face, |
Werner Lemberg | faa3c88 | 2017-02-06 13:13:02 +0100 | [diff] [blame] | 1139 | &table->itemStore, |
Werner Lemberg | 469ced7 | 2017-01-08 09:28:34 +0100 | [diff] [blame] | 1140 | outerIndex, |
| 1141 | innerIndex ); |
| 1142 | |
Werner Lemberg | 71fecc5 | 2017-12-05 12:06:29 +0100 | [diff] [blame] | 1143 | FT_TRACE5(( "%s value %d adjusted by %d unit%s (%s)\n", |
Werner Lemberg | faa3c88 | 2017-02-06 13:13:02 +0100 | [diff] [blame] | 1144 | vertical ? "vertical height" : "horizontal width", |
Werner Lemberg | 1801851 | 2016-12-29 21:30:06 +0100 | [diff] [blame] | 1145 | *avalue, |
Werner Lemberg | faa3c88 | 2017-02-06 13:13:02 +0100 | [diff] [blame] | 1146 | delta, |
Werner Lemberg | 71fecc5 | 2017-12-05 12:06:29 +0100 | [diff] [blame] | 1147 | delta == 1 ? "" : "s", |
Werner Lemberg | faa3c88 | 2017-02-06 13:13:02 +0100 | [diff] [blame] | 1148 | vertical ? "VVAR" : "HVAR" )); |
Werner Lemberg | 1801851 | 2016-12-29 21:30:06 +0100 | [diff] [blame] | 1149 | |
Werner Lemberg | 469ced7 | 2017-01-08 09:28:34 +0100 | [diff] [blame] | 1150 | *avalue += delta; |
Dave Arnold | aa0c4b4 | 2016-12-15 14:04:51 +0100 | [diff] [blame] | 1151 | |
| 1152 | Exit: |
| 1153 | return error; |
| 1154 | } |
| 1155 | |
| 1156 | |
Werner Lemberg | faa3c88 | 2017-02-06 13:13:02 +0100 | [diff] [blame] | 1157 | FT_LOCAL_DEF( FT_Error ) |
| 1158 | tt_hadvance_adjust( TT_Face face, |
| 1159 | FT_UInt gindex, |
| 1160 | FT_Int *avalue ) |
| 1161 | { |
| 1162 | return tt_hvadvance_adjust( face, gindex, avalue, 0 ); |
| 1163 | } |
| 1164 | |
| 1165 | |
| 1166 | FT_LOCAL_DEF( FT_Error ) |
| 1167 | tt_vadvance_adjust( TT_Face face, |
| 1168 | FT_UInt gindex, |
| 1169 | FT_Int *avalue ) |
| 1170 | { |
| 1171 | return tt_hvadvance_adjust( face, gindex, avalue, 1 ); |
| 1172 | } |
| 1173 | |
| 1174 | |
Werner Lemberg | 07ee1d2 | 2017-01-11 12:50:51 +0100 | [diff] [blame] | 1175 | #define GX_VALUE_SIZE 8 |
| 1176 | |
| 1177 | /* all values are FT_Short or FT_UShort entities; */ |
| 1178 | /* we treat them consistently as FT_Short */ |
| 1179 | #define GX_VALUE_CASE( tag, dflt ) \ |
| 1180 | case MVAR_TAG_ ## tag : \ |
| 1181 | p = (FT_Short*)&face->dflt; \ |
| 1182 | break |
| 1183 | |
| 1184 | #define GX_GASP_CASE( idx ) \ |
| 1185 | case MVAR_TAG_GASP_ ## idx : \ |
| 1186 | if ( idx < face->gasp.numRanges - 1 ) \ |
| 1187 | p = (FT_Short*)&face->gasp.gaspRanges[idx].maxPPEM; \ |
| 1188 | else \ |
| 1189 | p = NULL; \ |
| 1190 | break |
| 1191 | |
| 1192 | |
| 1193 | static FT_Short* |
| 1194 | ft_var_get_value_pointer( TT_Face face, |
| 1195 | FT_ULong mvar_tag ) |
| 1196 | { |
| 1197 | FT_Short* p; |
| 1198 | |
| 1199 | |
| 1200 | switch ( mvar_tag ) |
| 1201 | { |
| 1202 | GX_GASP_CASE( 0 ); |
| 1203 | GX_GASP_CASE( 1 ); |
| 1204 | GX_GASP_CASE( 2 ); |
| 1205 | GX_GASP_CASE( 3 ); |
| 1206 | GX_GASP_CASE( 4 ); |
| 1207 | GX_GASP_CASE( 5 ); |
| 1208 | GX_GASP_CASE( 6 ); |
| 1209 | GX_GASP_CASE( 7 ); |
| 1210 | GX_GASP_CASE( 8 ); |
| 1211 | GX_GASP_CASE( 9 ); |
| 1212 | |
| 1213 | GX_VALUE_CASE( CPHT, os2.sCapHeight ); |
| 1214 | GX_VALUE_CASE( HASC, os2.sTypoAscender ); |
| 1215 | GX_VALUE_CASE( HCLA, os2.usWinAscent ); |
| 1216 | GX_VALUE_CASE( HCLD, os2.usWinDescent ); |
| 1217 | GX_VALUE_CASE( HCOF, horizontal.caret_Offset ); |
| 1218 | GX_VALUE_CASE( HCRN, horizontal.caret_Slope_Run ); |
| 1219 | GX_VALUE_CASE( HCRS, horizontal.caret_Slope_Rise ); |
| 1220 | GX_VALUE_CASE( HDSC, os2.sTypoDescender ); |
| 1221 | GX_VALUE_CASE( HLGP, os2.sTypoLineGap ); |
| 1222 | GX_VALUE_CASE( SBXO, os2.ySubscriptXOffset); |
| 1223 | GX_VALUE_CASE( SBXS, os2.ySubscriptXSize ); |
| 1224 | GX_VALUE_CASE( SBYO, os2.ySubscriptYOffset ); |
| 1225 | GX_VALUE_CASE( SBYS, os2.ySubscriptYSize ); |
| 1226 | GX_VALUE_CASE( SPXO, os2.ySuperscriptXOffset ); |
| 1227 | GX_VALUE_CASE( SPXS, os2.ySuperscriptXSize ); |
| 1228 | GX_VALUE_CASE( SPYO, os2.ySuperscriptYOffset ); |
| 1229 | GX_VALUE_CASE( SPYS, os2.ySuperscriptYSize ); |
| 1230 | GX_VALUE_CASE( STRO, os2.yStrikeoutPosition ); |
| 1231 | GX_VALUE_CASE( STRS, os2.yStrikeoutSize ); |
| 1232 | GX_VALUE_CASE( UNDO, postscript.underlinePosition ); |
| 1233 | GX_VALUE_CASE( UNDS, postscript.underlineThickness ); |
| 1234 | GX_VALUE_CASE( VASC, vertical.Ascender ); |
| 1235 | GX_VALUE_CASE( VCOF, vertical.caret_Offset ); |
| 1236 | GX_VALUE_CASE( VCRN, vertical.caret_Slope_Run ); |
| 1237 | GX_VALUE_CASE( VCRS, vertical.caret_Slope_Rise ); |
| 1238 | GX_VALUE_CASE( VDSC, vertical.Descender ); |
| 1239 | GX_VALUE_CASE( VLGP, vertical.Line_Gap ); |
| 1240 | GX_VALUE_CASE( XHGT, os2.sxHeight ); |
| 1241 | |
| 1242 | default: |
| 1243 | /* ignore unknown tag */ |
| 1244 | p = NULL; |
| 1245 | } |
| 1246 | |
| 1247 | return p; |
| 1248 | } |
| 1249 | |
| 1250 | |
Werner Lemberg | 9ac9060 | 2018-06-03 09:01:17 +0200 | [diff] [blame] | 1251 | /************************************************************************** |
| 1252 | * |
| 1253 | * @Function: |
| 1254 | * ft_var_load_mvar |
| 1255 | * |
| 1256 | * @Description: |
| 1257 | * Parse the `MVAR' table. |
| 1258 | * |
| 1259 | * Some memory may remain allocated on error; it is always freed in |
| 1260 | * `tt_done_blend', however. |
| 1261 | * |
| 1262 | * @InOut: |
| 1263 | * face :: |
| 1264 | * The font face. |
| 1265 | */ |
Werner Lemberg | 07ee1d2 | 2017-01-11 12:50:51 +0100 | [diff] [blame] | 1266 | static void |
| 1267 | ft_var_load_mvar( TT_Face face ) |
| 1268 | { |
| 1269 | FT_Stream stream = FT_FACE_STREAM( face ); |
| 1270 | FT_Memory memory = stream->memory; |
| 1271 | |
| 1272 | GX_Blend blend = face->blend; |
| 1273 | GX_ItemVarStore itemStore; |
| 1274 | GX_Value value, limit; |
| 1275 | |
| 1276 | FT_Error error; |
| 1277 | FT_UShort majorVersion; |
| 1278 | FT_ULong table_len; |
| 1279 | FT_ULong table_offset; |
| 1280 | FT_UShort store_offset; |
| 1281 | FT_ULong records_offset; |
| 1282 | |
| 1283 | |
| 1284 | FT_TRACE2(( "MVAR " )); |
| 1285 | |
| 1286 | error = face->goto_table( face, TTAG_MVAR, stream, &table_len ); |
| 1287 | if ( error ) |
| 1288 | { |
| 1289 | FT_TRACE2(( "is missing\n" )); |
| 1290 | return; |
| 1291 | } |
| 1292 | |
| 1293 | table_offset = FT_STREAM_POS(); |
| 1294 | |
| 1295 | /* skip minor version */ |
| 1296 | if ( FT_READ_USHORT( majorVersion ) || |
| 1297 | FT_STREAM_SKIP( 2 ) ) |
| 1298 | return; |
| 1299 | |
| 1300 | if ( majorVersion != 1 ) |
| 1301 | { |
| 1302 | FT_TRACE2(( "bad table version %d\n", majorVersion )); |
| 1303 | return; |
| 1304 | } |
| 1305 | |
| 1306 | if ( FT_NEW( blend->mvar_table ) ) |
| 1307 | return; |
| 1308 | |
Werner Lemberg | f502092 | 2017-01-23 11:47:40 +0100 | [diff] [blame] | 1309 | /* skip reserved entry and value record size */ |
| 1310 | if ( FT_STREAM_SKIP( 4 ) || |
Werner Lemberg | 07ee1d2 | 2017-01-11 12:50:51 +0100 | [diff] [blame] | 1311 | FT_READ_USHORT( blend->mvar_table->valueCount ) || |
| 1312 | FT_READ_USHORT( store_offset ) ) |
| 1313 | return; |
| 1314 | |
| 1315 | records_offset = FT_STREAM_POS(); |
| 1316 | |
| 1317 | error = ft_var_load_item_variation_store( |
| 1318 | face, |
| 1319 | table_offset + store_offset, |
| 1320 | &blend->mvar_table->itemStore ); |
| 1321 | if ( error ) |
| 1322 | return; |
| 1323 | |
| 1324 | if ( FT_NEW_ARRAY( blend->mvar_table->values, |
| 1325 | blend->mvar_table->valueCount ) ) |
| 1326 | return; |
| 1327 | |
| 1328 | if ( FT_STREAM_SEEK( records_offset ) || |
| 1329 | FT_FRAME_ENTER( blend->mvar_table->valueCount * GX_VALUE_SIZE ) ) |
| 1330 | return; |
| 1331 | |
| 1332 | value = blend->mvar_table->values; |
| 1333 | limit = value + blend->mvar_table->valueCount; |
| 1334 | itemStore = &blend->mvar_table->itemStore; |
| 1335 | |
| 1336 | for ( ; value < limit; value++ ) |
| 1337 | { |
| 1338 | value->tag = FT_GET_ULONG(); |
| 1339 | value->outerIndex = FT_GET_USHORT(); |
| 1340 | value->innerIndex = FT_GET_USHORT(); |
| 1341 | |
| 1342 | if ( value->outerIndex >= itemStore->dataCount || |
| 1343 | value->innerIndex >= itemStore->varData[value->outerIndex] |
| 1344 | .itemCount ) |
| 1345 | { |
| 1346 | error = FT_THROW( Invalid_Table ); |
| 1347 | break; |
| 1348 | } |
| 1349 | } |
| 1350 | |
| 1351 | FT_FRAME_EXIT(); |
| 1352 | |
| 1353 | if ( error ) |
| 1354 | return; |
| 1355 | |
| 1356 | FT_TRACE2(( "loaded\n" )); |
| 1357 | |
| 1358 | value = blend->mvar_table->values; |
| 1359 | limit = value + blend->mvar_table->valueCount; |
| 1360 | |
| 1361 | /* save original values of the data MVAR is going to modify */ |
| 1362 | for ( ; value < limit; value++ ) |
| 1363 | { |
| 1364 | FT_Short* p = ft_var_get_value_pointer( face, value->tag ); |
| 1365 | |
| 1366 | |
Werner Lemberg | 447a0b6 | 2017-03-13 07:42:34 +0100 | [diff] [blame] | 1367 | if ( p ) |
| 1368 | value->unmodified = *p; |
| 1369 | #ifdef FT_DEBUG_LEVEL_TRACE |
| 1370 | else |
| 1371 | FT_TRACE1(( "ft_var_load_mvar: Ignoring unknown tag `%c%c%c%c'\n", |
| 1372 | (FT_Char)( value->tag >> 24 ), |
| 1373 | (FT_Char)( value->tag >> 16 ), |
| 1374 | (FT_Char)( value->tag >> 8 ), |
| 1375 | (FT_Char)( value->tag ) )); |
| 1376 | #endif |
Werner Lemberg | 07ee1d2 | 2017-01-11 12:50:51 +0100 | [diff] [blame] | 1377 | } |
| 1378 | |
| 1379 | face->variation_support |= TT_FACE_FLAG_VAR_MVAR; |
| 1380 | } |
| 1381 | |
| 1382 | |
Werner Lemberg | d718ac4 | 2017-01-11 14:12:34 +0100 | [diff] [blame] | 1383 | static FT_Error |
Seigo Nonaka | fd9b54e | 2023-05-02 10:01:38 +0900 | [diff] [blame] | 1384 | ft_size_reset_iterator( FT_ListNode node, |
Werner Lemberg | d718ac4 | 2017-01-11 14:12:34 +0100 | [diff] [blame] | 1385 | void* user ) |
| 1386 | { |
Seigo Nonaka | fd9b54e | 2023-05-02 10:01:38 +0900 | [diff] [blame] | 1387 | FT_Size size = (FT_Size)node->data; |
| 1388 | FT_Service_MetricsVariations var = (FT_Service_MetricsVariations)user; |
Werner Lemberg | d718ac4 | 2017-01-11 14:12:34 +0100 | [diff] [blame] | 1389 | |
| 1390 | |
Seigo Nonaka | fd9b54e | 2023-05-02 10:01:38 +0900 | [diff] [blame] | 1391 | var->size_reset( size ); |
Werner Lemberg | d718ac4 | 2017-01-11 14:12:34 +0100 | [diff] [blame] | 1392 | |
| 1393 | return FT_Err_Ok; |
| 1394 | } |
| 1395 | |
| 1396 | |
Werner Lemberg | 9ac9060 | 2018-06-03 09:01:17 +0200 | [diff] [blame] | 1397 | /************************************************************************** |
| 1398 | * |
| 1399 | * @Function: |
| 1400 | * tt_apply_mvar |
| 1401 | * |
| 1402 | * @Description: |
| 1403 | * Apply `MVAR' table adjustments. |
| 1404 | * |
| 1405 | * @InOut: |
| 1406 | * face :: |
| 1407 | * The font face. |
| 1408 | */ |
Werner Lemberg | d718ac4 | 2017-01-11 14:12:34 +0100 | [diff] [blame] | 1409 | FT_LOCAL_DEF( void ) |
| 1410 | tt_apply_mvar( TT_Face face ) |
| 1411 | { |
| 1412 | GX_Blend blend = face->blend; |
| 1413 | GX_Value value, limit; |
Nikolaus Waxweiler | a6feefd | 2019-02-02 15:50:57 +0000 | [diff] [blame] | 1414 | FT_Short mvar_hasc_delta = 0; |
| 1415 | FT_Short mvar_hdsc_delta = 0; |
| 1416 | FT_Short mvar_hlgp_delta = 0; |
Werner Lemberg | d718ac4 | 2017-01-11 14:12:34 +0100 | [diff] [blame] | 1417 | |
| 1418 | |
| 1419 | if ( !( face->variation_support & TT_FACE_FLAG_VAR_MVAR ) ) |
| 1420 | return; |
| 1421 | |
| 1422 | value = blend->mvar_table->values; |
| 1423 | limit = value + blend->mvar_table->valueCount; |
| 1424 | |
| 1425 | for ( ; value < limit; value++ ) |
| 1426 | { |
| 1427 | FT_Short* p = ft_var_get_value_pointer( face, value->tag ); |
| 1428 | FT_Int delta; |
| 1429 | |
| 1430 | |
| 1431 | delta = ft_var_get_item_delta( face, |
| 1432 | &blend->mvar_table->itemStore, |
| 1433 | value->outerIndex, |
| 1434 | value->innerIndex ); |
| 1435 | |
Werner Lemberg | 447a0b6 | 2017-03-13 07:42:34 +0100 | [diff] [blame] | 1436 | if ( p ) |
| 1437 | { |
Werner Lemberg | 71fecc5 | 2017-12-05 12:06:29 +0100 | [diff] [blame] | 1438 | FT_TRACE5(( "value %c%c%c%c (%d unit%s) adjusted by %d unit%s (MVAR)\n", |
Werner Lemberg | 447a0b6 | 2017-03-13 07:42:34 +0100 | [diff] [blame] | 1439 | (FT_Char)( value->tag >> 24 ), |
| 1440 | (FT_Char)( value->tag >> 16 ), |
| 1441 | (FT_Char)( value->tag >> 8 ), |
| 1442 | (FT_Char)( value->tag ), |
| 1443 | value->unmodified, |
Werner Lemberg | 71fecc5 | 2017-12-05 12:06:29 +0100 | [diff] [blame] | 1444 | value->unmodified == 1 ? "" : "s", |
| 1445 | delta, |
| 1446 | delta == 1 ? "" : "s" )); |
Werner Lemberg | d718ac4 | 2017-01-11 14:12:34 +0100 | [diff] [blame] | 1447 | |
Werner Lemberg | 447a0b6 | 2017-03-13 07:42:34 +0100 | [diff] [blame] | 1448 | /* since we handle both signed and unsigned values as FT_Short, */ |
| 1449 | /* ensure proper overflow arithmetic */ |
| 1450 | *p = (FT_Short)( value->unmodified + (FT_Short)delta ); |
Nikolaus Waxweiler | a6feefd | 2019-02-02 15:50:57 +0000 | [diff] [blame] | 1451 | |
| 1452 | /* Treat hasc, hdsc and hlgp specially, see below. */ |
| 1453 | if ( value->tag == MVAR_TAG_HASC ) |
| 1454 | mvar_hasc_delta = (FT_Short)delta; |
| 1455 | else if ( value->tag == MVAR_TAG_HDSC ) |
| 1456 | mvar_hdsc_delta = (FT_Short)delta; |
| 1457 | else if ( value->tag == MVAR_TAG_HLGP ) |
| 1458 | mvar_hlgp_delta = (FT_Short)delta; |
Werner Lemberg | 447a0b6 | 2017-03-13 07:42:34 +0100 | [diff] [blame] | 1459 | } |
Werner Lemberg | d718ac4 | 2017-01-11 14:12:34 +0100 | [diff] [blame] | 1460 | } |
| 1461 | |
| 1462 | /* adjust all derived values */ |
| 1463 | { |
Seigo Nonaka | fd9b54e | 2023-05-02 10:01:38 +0900 | [diff] [blame] | 1464 | FT_Service_MetricsVariations var = |
| 1465 | (FT_Service_MetricsVariations)face->face_var; |
| 1466 | |
Werner Lemberg | d718ac4 | 2017-01-11 14:12:34 +0100 | [diff] [blame] | 1467 | FT_Face root = &face->root; |
| 1468 | |
Nikolaus Waxweiler | a6feefd | 2019-02-02 15:50:57 +0000 | [diff] [blame] | 1469 | /* |
| 1470 | * Apply the deltas of hasc, hdsc and hlgp to the FT_Face's ascender, |
| 1471 | * descender and height attributes, no matter how they were originally |
| 1472 | * computed. |
| 1473 | * |
| 1474 | * (Code that ignores those and accesses the font's metrics values |
| 1475 | * directly is already served by the delta application code above.) |
| 1476 | * |
| 1477 | * The MVAR table supports variations for both typo and win metrics. |
| 1478 | * According to Behdad Esfahbod, the thinking of the working group was |
| 1479 | * that no one uses win metrics anymore for setting line metrics (the |
| 1480 | * specification even calls these metrics "horizontal clipping |
| 1481 | * ascent/descent", probably for their role on the Windows platform in |
| 1482 | * computing clipping boxes), and new fonts should use typo metrics, so |
| 1483 | * typo deltas should be applied to whatever sfnt_load_face decided the |
| 1484 | * line metrics should be. |
| 1485 | * |
| 1486 | * Before, the following led to different line metrics between default |
| 1487 | * outline and instances, visible when e.g. the default outlines were |
| 1488 | * used as the regular face and instances for everything else: |
| 1489 | * |
| 1490 | * 1. sfnt_load_face applied the hhea metrics by default. |
| 1491 | * 2. This code later applied the typo metrics by default, regardless of |
| 1492 | * whether they were actually changed or the font had the OS/2 table's |
| 1493 | * fsSelection's bit 7 (USE_TYPO_METRICS) set. |
| 1494 | */ |
| 1495 | FT_Short current_line_gap = root->height - root->ascender + |
| 1496 | root->descender; |
Werner Lemberg | b66d6a9 | 2019-02-06 07:38:25 +0100 | [diff] [blame] | 1497 | |
| 1498 | |
Nikolaus Waxweiler | a6feefd | 2019-02-02 15:50:57 +0000 | [diff] [blame] | 1499 | root->ascender = root->ascender + mvar_hasc_delta; |
| 1500 | root->descender = root->descender + mvar_hdsc_delta; |
| 1501 | root->height = root->ascender - root->descender + |
| 1502 | current_line_gap + mvar_hlgp_delta; |
Werner Lemberg | d718ac4 | 2017-01-11 14:12:34 +0100 | [diff] [blame] | 1503 | |
Werner Lemberg | 322b3be | 2017-01-15 13:57:25 +0100 | [diff] [blame] | 1504 | root->underline_position = face->postscript.underlinePosition - |
| 1505 | face->postscript.underlineThickness / 2; |
| 1506 | root->underline_thickness = face->postscript.underlineThickness; |
| 1507 | |
Seigo Nonaka | fd9b54e | 2023-05-02 10:01:38 +0900 | [diff] [blame] | 1508 | /* iterate over all FT_Size objects and call `var->size_reset' */ |
| 1509 | /* to propagate the metrics changes */ |
| 1510 | if ( var && var->size_reset ) |
| 1511 | FT_List_Iterate( &root->sizes_list, |
| 1512 | ft_size_reset_iterator, |
| 1513 | (void*)var ); |
Werner Lemberg | d718ac4 | 2017-01-11 14:12:34 +0100 | [diff] [blame] | 1514 | } |
| 1515 | } |
| 1516 | |
| 1517 | |
Werner Lemberg | 2b0b422 | 2008-05-28 22:17:28 +0000 | [diff] [blame] | 1518 | typedef struct GX_GVar_Head_ |
| 1519 | { |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 1520 | FT_Long version; |
| 1521 | FT_UShort axisCount; |
| 1522 | FT_UShort globalCoordCount; |
| 1523 | FT_ULong offsetToCoord; |
| 1524 | FT_UShort glyphCount; |
| 1525 | FT_UShort flags; |
| 1526 | FT_ULong offsetToData; |
| 1527 | |
| 1528 | } GX_GVar_Head; |
| 1529 | |
| 1530 | |
Werner Lemberg | 9ac9060 | 2018-06-03 09:01:17 +0200 | [diff] [blame] | 1531 | /************************************************************************** |
| 1532 | * |
| 1533 | * @Function: |
| 1534 | * ft_var_load_gvar |
| 1535 | * |
| 1536 | * @Description: |
| 1537 | * Parse the `gvar' table if present. If `fvar' is there, `gvar' had |
| 1538 | * better be there too. |
| 1539 | * |
| 1540 | * @InOut: |
| 1541 | * face :: |
| 1542 | * The font face. |
| 1543 | * |
| 1544 | * @Return: |
| 1545 | * FreeType error code. 0 means success. |
| 1546 | */ |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 1547 | static FT_Error |
| 1548 | ft_var_load_gvar( TT_Face face ) |
| 1549 | { |
Werner Lemberg | 0aa3616 | 2015-03-08 22:50:37 +0100 | [diff] [blame] | 1550 | FT_Stream stream = FT_FACE_STREAM( face ); |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 1551 | FT_Memory memory = stream->memory; |
| 1552 | GX_Blend blend = face->blend; |
| 1553 | FT_Error error; |
| 1554 | FT_UInt i, j; |
| 1555 | FT_ULong table_len; |
| 1556 | FT_ULong gvar_start; |
Yamato, Masatake (大和æ£æ¦) | 17f4b8b | 2004-05-07 08:59:29 +0000 | [diff] [blame] | 1557 | FT_ULong offsetToData; |
Ben Wagner | 11975fe | 2020-02-29 20:18:00 +0100 | [diff] [blame] | 1558 | FT_ULong offsets_len; |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 1559 | GX_GVar_Head gvar_head; |
| 1560 | |
| 1561 | static const FT_Frame_Field gvar_fields[] = |
| 1562 | { |
| 1563 | |
| 1564 | #undef FT_STRUCTURE |
| 1565 | #define FT_STRUCTURE GX_GVar_Head |
| 1566 | |
| 1567 | FT_FRAME_START( 20 ), |
| 1568 | FT_FRAME_LONG ( version ), |
| 1569 | FT_FRAME_USHORT( axisCount ), |
| 1570 | FT_FRAME_USHORT( globalCoordCount ), |
| 1571 | FT_FRAME_ULONG ( offsetToCoord ), |
| 1572 | FT_FRAME_USHORT( glyphCount ), |
| 1573 | FT_FRAME_USHORT( flags ), |
| 1574 | FT_FRAME_ULONG ( offsetToData ), |
| 1575 | FT_FRAME_END |
| 1576 | }; |
| 1577 | |
Werner Lemberg | a678560 | 2015-05-28 17:31:15 +0200 | [diff] [blame] | 1578 | |
Werner Lemberg | cdee7d1 | 2015-05-31 11:54:42 +0200 | [diff] [blame] | 1579 | FT_TRACE2(( "GVAR " )); |
| 1580 | |
Werner Lemberg | 5d664b6 | 2016-12-17 20:47:42 +0100 | [diff] [blame] | 1581 | if ( FT_SET_ERROR( face->goto_table( face, |
| 1582 | TTAG_gvar, |
| 1583 | stream, |
| 1584 | &table_len ) ) ) |
Werner Lemberg | cdee7d1 | 2015-05-31 11:54:42 +0200 | [diff] [blame] | 1585 | { |
| 1586 | FT_TRACE2(( "is missing\n" )); |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 1587 | goto Exit; |
Werner Lemberg | cdee7d1 | 2015-05-31 11:54:42 +0200 | [diff] [blame] | 1588 | } |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 1589 | |
| 1590 | gvar_start = FT_STREAM_POS( ); |
| 1591 | if ( FT_STREAM_READ_FIELDS( gvar_fields, &gvar_head ) ) |
| 1592 | goto Exit; |
| 1593 | |
Werner Lemberg | cdee7d1 | 2015-05-31 11:54:42 +0200 | [diff] [blame] | 1594 | if ( gvar_head.version != 0x00010000L ) |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 1595 | { |
Werner Lemberg | cdee7d1 | 2015-05-31 11:54:42 +0200 | [diff] [blame] | 1596 | FT_TRACE1(( "bad table version\n" )); |
Werner Lemberg | 059bc33 | 2013-03-14 10:27:35 +0100 | [diff] [blame] | 1597 | error = FT_THROW( Invalid_Table ); |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 1598 | goto Exit; |
| 1599 | } |
| 1600 | |
Werner Lemberg | cdee7d1 | 2015-05-31 11:54:42 +0200 | [diff] [blame] | 1601 | if ( gvar_head.axisCount != (FT_UShort)blend->mmvar->num_axis ) |
| 1602 | { |
Werner Lemberg | a6adb25 | 2020-12-02 14:15:07 +0100 | [diff] [blame] | 1603 | FT_TRACE1(( "ft_var_load_gvar:" |
| 1604 | " number of axes in `gvar' and `cvar'\n" )); |
| 1605 | FT_TRACE1(( " table are different\n" )); |
Werner Lemberg | cdee7d1 | 2015-05-31 11:54:42 +0200 | [diff] [blame] | 1606 | error = FT_THROW( Invalid_Table ); |
| 1607 | goto Exit; |
| 1608 | } |
| 1609 | |
Werner Lemberg | da34673 | 2015-10-10 10:21:27 +0200 | [diff] [blame] | 1610 | /* rough sanity check, ignoring offsets */ |
| 1611 | if ( (FT_ULong)gvar_head.globalCoordCount * gvar_head.axisCount > |
| 1612 | table_len / 2 ) |
| 1613 | { |
| 1614 | FT_TRACE1(( "ft_var_load_gvar:" |
| 1615 | " invalid number of global coordinates\n" )); |
| 1616 | error = FT_THROW( Invalid_Table ); |
| 1617 | goto Exit; |
| 1618 | } |
| 1619 | |
Ben Wagner | 11975fe | 2020-02-29 20:18:00 +0100 | [diff] [blame] | 1620 | /* offsets can be either 2 or 4 bytes */ |
| 1621 | /* (one more offset than glyphs, to mark size of last) */ |
| 1622 | offsets_len = ( gvar_head.glyphCount + 1 ) * |
| 1623 | ( ( gvar_head.flags & 1 ) ? 4L : 2L ); |
| 1624 | |
| 1625 | /* rough sanity check */ |
| 1626 | if (offsets_len > table_len ) |
Werner Lemberg | f96094e | 2015-10-13 07:13:56 +0200 | [diff] [blame] | 1627 | { |
| 1628 | FT_TRACE1(( "ft_var_load_gvar: invalid number of glyphs\n" )); |
| 1629 | error = FT_THROW( Invalid_Table ); |
| 1630 | goto Exit; |
| 1631 | } |
Werner Lemberg | da34673 | 2015-10-10 10:21:27 +0200 | [diff] [blame] | 1632 | |
| 1633 | FT_TRACE2(( "loaded\n" )); |
| 1634 | |
Ben Wagner | 216e077 | 2020-02-28 07:43:00 +0100 | [diff] [blame] | 1635 | blend->gvar_size = table_len; |
| 1636 | offsetToData = gvar_start + gvar_head.offsetToData; |
Werner Lemberg | da34673 | 2015-10-10 10:21:27 +0200 | [diff] [blame] | 1637 | |
Werner Lemberg | 71fecc5 | 2017-12-05 12:06:29 +0100 | [diff] [blame] | 1638 | FT_TRACE5(( "gvar: there %s %d shared coordinate%s:\n", |
Ben Wagner | 216e077 | 2020-02-28 07:43:00 +0100 | [diff] [blame] | 1639 | gvar_head.globalCoordCount == 1 ? "is" : "are", |
| 1640 | gvar_head.globalCoordCount, |
| 1641 | gvar_head.globalCoordCount == 1 ? "" : "s" )); |
Werner Lemberg | cdee7d1 | 2015-05-31 11:54:42 +0200 | [diff] [blame] | 1642 | |
Ben Wagner | 11975fe | 2020-02-29 20:18:00 +0100 | [diff] [blame] | 1643 | if ( FT_FRAME_ENTER( offsets_len ) ) |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 1644 | goto Exit; |
| 1645 | |
Ben Wagner | 11975fe | 2020-02-29 20:18:00 +0100 | [diff] [blame] | 1646 | /* offsets (one more offset than glyphs, to mark size of last) */ |
Alexei Podtelezhnikov | cb9e7b7 | 2021-11-06 22:59:31 -0400 | [diff] [blame] | 1647 | if ( FT_QNEW_ARRAY( blend->glyphoffsets, gvar_head.glyphCount + 1 ) ) |
Ben Wagner | 11975fe | 2020-02-29 20:18:00 +0100 | [diff] [blame] | 1648 | goto Fail2; |
| 1649 | |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 1650 | if ( gvar_head.flags & 1 ) |
| 1651 | { |
Ben Wagner | 216e077 | 2020-02-28 07:43:00 +0100 | [diff] [blame] | 1652 | FT_ULong limit = gvar_start + table_len; |
| 1653 | FT_ULong max_offset = 0; |
Werner Lemberg | 53c5e4b | 2018-09-12 07:27:30 +0200 | [diff] [blame] | 1654 | |
| 1655 | |
Ben Wagner | 216e077 | 2020-02-28 07:43:00 +0100 | [diff] [blame] | 1656 | for ( i = 0; i <= gvar_head.glyphCount; i++ ) |
Werner Lemberg | 53c5e4b | 2018-09-12 07:27:30 +0200 | [diff] [blame] | 1657 | { |
Werner Lemberg | 1f7a4e1 | 2015-02-17 10:17:56 +0100 | [diff] [blame] | 1658 | blend->glyphoffsets[i] = offsetToData + FT_GET_ULONG(); |
Ben Wagner | 216e077 | 2020-02-28 07:43:00 +0100 | [diff] [blame] | 1659 | |
| 1660 | if ( max_offset <= blend->glyphoffsets[i] ) |
| 1661 | max_offset = blend->glyphoffsets[i]; |
| 1662 | else |
Werner Lemberg | 53c5e4b | 2018-09-12 07:27:30 +0200 | [diff] [blame] | 1663 | { |
| 1664 | FT_TRACE2(( "ft_var_load_gvar:" |
Ben Wagner | 216e077 | 2020-02-28 07:43:00 +0100 | [diff] [blame] | 1665 | " glyph variation data offset %d not monotonic\n", |
Werner Lemberg | 53c5e4b | 2018-09-12 07:27:30 +0200 | [diff] [blame] | 1666 | i )); |
Ben Wagner | 216e077 | 2020-02-28 07:43:00 +0100 | [diff] [blame] | 1667 | blend->glyphoffsets[i] = max_offset; |
| 1668 | } |
| 1669 | |
| 1670 | /* use `<', not `<=' */ |
| 1671 | if ( limit < blend->glyphoffsets[i] ) |
| 1672 | { |
| 1673 | FT_TRACE2(( "ft_var_load_gvar:" |
| 1674 | " glyph variation data offset %d out of range\n", |
| 1675 | i )); |
| 1676 | blend->glyphoffsets[i] = limit; |
Werner Lemberg | 53c5e4b | 2018-09-12 07:27:30 +0200 | [diff] [blame] | 1677 | } |
| 1678 | } |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 1679 | } |
| 1680 | else |
| 1681 | { |
Ben Wagner | 216e077 | 2020-02-28 07:43:00 +0100 | [diff] [blame] | 1682 | FT_ULong limit = gvar_start + table_len; |
| 1683 | FT_ULong max_offset = 0; |
Werner Lemberg | 53c5e4b | 2018-09-12 07:27:30 +0200 | [diff] [blame] | 1684 | |
| 1685 | |
Ben Wagner | 216e077 | 2020-02-28 07:43:00 +0100 | [diff] [blame] | 1686 | for ( i = 0; i <= gvar_head.glyphCount; i++ ) |
Werner Lemberg | 53c5e4b | 2018-09-12 07:27:30 +0200 | [diff] [blame] | 1687 | { |
Yamato, Masatake (大和æ£æ¦) | 17f4b8b | 2004-05-07 08:59:29 +0000 | [diff] [blame] | 1688 | blend->glyphoffsets[i] = offsetToData + FT_GET_USHORT() * 2; |
Ben Wagner | 216e077 | 2020-02-28 07:43:00 +0100 | [diff] [blame] | 1689 | |
| 1690 | if ( max_offset <= blend->glyphoffsets[i] ) |
| 1691 | max_offset = blend->glyphoffsets[i]; |
| 1692 | else |
Werner Lemberg | 53c5e4b | 2018-09-12 07:27:30 +0200 | [diff] [blame] | 1693 | { |
| 1694 | FT_TRACE2(( "ft_var_load_gvar:" |
Ben Wagner | 216e077 | 2020-02-28 07:43:00 +0100 | [diff] [blame] | 1695 | " glyph variation data offset %d not monotonic\n", |
Werner Lemberg | 53c5e4b | 2018-09-12 07:27:30 +0200 | [diff] [blame] | 1696 | i )); |
Ben Wagner | 216e077 | 2020-02-28 07:43:00 +0100 | [diff] [blame] | 1697 | blend->glyphoffsets[i] = max_offset; |
| 1698 | } |
| 1699 | |
| 1700 | /* use `<', not `<=' */ |
| 1701 | if ( limit < blend->glyphoffsets[i] ) |
| 1702 | { |
| 1703 | FT_TRACE2(( "ft_var_load_gvar:" |
| 1704 | " glyph variation data offset %d out of range\n", |
| 1705 | i )); |
| 1706 | blend->glyphoffsets[i] = limit; |
Werner Lemberg | 53c5e4b | 2018-09-12 07:27:30 +0200 | [diff] [blame] | 1707 | } |
| 1708 | } |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 1709 | } |
| 1710 | |
Ben Wagner | 216e077 | 2020-02-28 07:43:00 +0100 | [diff] [blame] | 1711 | blend->gv_glyphcnt = gvar_head.glyphCount; |
| 1712 | |
Ben Wagner | 11975fe | 2020-02-29 20:18:00 +0100 | [diff] [blame] | 1713 | FT_FRAME_EXIT(); |
| 1714 | |
Ben Wagner | 216e077 | 2020-02-28 07:43:00 +0100 | [diff] [blame] | 1715 | if ( gvar_head.globalCoordCount != 0 ) |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 1716 | { |
Ben Wagner | 216e077 | 2020-02-28 07:43:00 +0100 | [diff] [blame] | 1717 | if ( FT_STREAM_SEEK( gvar_start + gvar_head.offsetToCoord ) || |
| 1718 | FT_FRAME_ENTER( gvar_head.globalCoordCount * |
| 1719 | gvar_head.axisCount * 2L ) ) |
| 1720 | { |
| 1721 | FT_TRACE2(( "ft_var_load_gvar:" |
| 1722 | " glyph variation shared tuples missing\n" )); |
Ben Wagner | 11975fe | 2020-02-29 20:18:00 +0100 | [diff] [blame] | 1723 | goto Fail; |
Ben Wagner | 216e077 | 2020-02-28 07:43:00 +0100 | [diff] [blame] | 1724 | } |
| 1725 | |
Alexei Podtelezhnikov | cb9e7b7 | 2021-11-06 22:59:31 -0400 | [diff] [blame] | 1726 | if ( FT_QNEW_ARRAY( blend->tuplecoords, |
| 1727 | gvar_head.axisCount * gvar_head.globalCoordCount ) ) |
Ben Wagner | 11975fe | 2020-02-29 20:18:00 +0100 | [diff] [blame] | 1728 | goto Fail2; |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 1729 | |
Ben Wagner | 11975fe | 2020-02-29 20:18:00 +0100 | [diff] [blame] | 1730 | for ( i = 0; i < gvar_head.globalCoordCount; i++ ) |
Werner Lemberg | cdee7d1 | 2015-05-31 11:54:42 +0200 | [diff] [blame] | 1731 | { |
| 1732 | FT_TRACE5(( " [ " )); |
Werner Lemberg | 3295039 | 2016-02-15 12:54:40 +0100 | [diff] [blame] | 1733 | for ( j = 0; j < (FT_UInt)gvar_head.axisCount; j++ ) |
Werner Lemberg | cdee7d1 | 2015-05-31 11:54:42 +0200 | [diff] [blame] | 1734 | { |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 1735 | blend->tuplecoords[i * gvar_head.axisCount + j] = |
Werner Lemberg | dc39f76 | 2019-05-07 10:09:55 +0200 | [diff] [blame] | 1736 | FT_fdot14ToFixed( FT_GET_SHORT() ); |
Werner Lemberg | 84b0d99 | 2016-12-29 10:38:51 +0100 | [diff] [blame] | 1737 | FT_TRACE5(( "%.5f ", |
Werner Lemberg | cdee7d1 | 2015-05-31 11:54:42 +0200 | [diff] [blame] | 1738 | blend->tuplecoords[i * gvar_head.axisCount + j] / 65536.0 )); |
| 1739 | } |
| 1740 | FT_TRACE5(( "]\n" )); |
| 1741 | } |
| 1742 | |
Ben Wagner | 11975fe | 2020-02-29 20:18:00 +0100 | [diff] [blame] | 1743 | blend->tuplecount = gvar_head.globalCoordCount; |
| 1744 | |
Werner Lemberg | cdee7d1 | 2015-05-31 11:54:42 +0200 | [diff] [blame] | 1745 | FT_TRACE5(( "\n" )); |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 1746 | |
| 1747 | FT_FRAME_EXIT(); |
| 1748 | } |
| 1749 | |
| 1750 | Exit: |
| 1751 | return error; |
Ben Wagner | 11975fe | 2020-02-29 20:18:00 +0100 | [diff] [blame] | 1752 | |
| 1753 | Fail2: |
| 1754 | FT_FRAME_EXIT(); |
| 1755 | |
| 1756 | Fail: |
| 1757 | FT_FREE( blend->glyphoffsets ); |
| 1758 | blend->gv_glyphcnt = 0; |
| 1759 | goto Exit; |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 1760 | } |
| 1761 | |
| 1762 | |
Werner Lemberg | 9ac9060 | 2018-06-03 09:01:17 +0200 | [diff] [blame] | 1763 | /************************************************************************** |
| 1764 | * |
| 1765 | * @Function: |
| 1766 | * ft_var_apply_tuple |
| 1767 | * |
| 1768 | * @Description: |
| 1769 | * Figure out whether a given tuple (design) applies to the current |
| 1770 | * blend, and if so, what is the scaling factor. |
| 1771 | * |
| 1772 | * @Input: |
| 1773 | * blend :: |
| 1774 | * The current blend of the font. |
| 1775 | * |
| 1776 | * tupleIndex :: |
| 1777 | * A flag saying whether this is an intermediate |
| 1778 | * tuple or not. |
| 1779 | * |
| 1780 | * tuple_coords :: |
| 1781 | * The coordinates of the tuple in normalized axis |
| 1782 | * units. |
| 1783 | * |
| 1784 | * im_start_coords :: |
| 1785 | * The initial coordinates where this tuple starts |
| 1786 | * to apply (for intermediate coordinates). |
| 1787 | * |
| 1788 | * im_end_coords :: |
| 1789 | * The final coordinates after which this tuple no |
| 1790 | * longer applies (for intermediate coordinates). |
| 1791 | * |
| 1792 | * @Return: |
| 1793 | * An FT_Fixed value containing the scaling factor. |
| 1794 | */ |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 1795 | static FT_Fixed |
| 1796 | ft_var_apply_tuple( GX_Blend blend, |
| 1797 | FT_UShort tupleIndex, |
| 1798 | FT_Fixed* tuple_coords, |
| 1799 | FT_Fixed* im_start_coords, |
| 1800 | FT_Fixed* im_end_coords ) |
| 1801 | { |
| 1802 | FT_UInt i; |
Alexei Podtelezhnikov | 4ae9cbb | 2012-12-01 23:36:02 -0500 | [diff] [blame] | 1803 | FT_Fixed apply = 0x10000L; |
Werner Lemberg | ee6e92c | 2004-05-11 06:45:27 +0000 | [diff] [blame] | 1804 | |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 1805 | |
Werner Lemberg | 0aa3616 | 2015-03-08 22:50:37 +0100 | [diff] [blame] | 1806 | for ( i = 0; i < blend->num_axis; i++ ) |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 1807 | { |
Alexei Podtelezhnikov | 547f82f | 2018-11-03 23:00:36 -0400 | [diff] [blame] | 1808 | FT_TRACE6(( " axis %d coordinate %.5f:\n", |
Werner Lemberg | cdee7d1 | 2015-05-31 11:54:42 +0200 | [diff] [blame] | 1809 | i, blend->normalizedcoords[i] / 65536.0 )); |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 1810 | |
Werner Lemberg | cdee7d1 | 2015-05-31 11:54:42 +0200 | [diff] [blame] | 1811 | /* It's not clear why (for intermediate tuples) we don't need */ |
| 1812 | /* to check against start/end -- the documentation says we don't. */ |
| 1813 | /* Similarly, it's unclear why we don't need to scale along the */ |
| 1814 | /* axis. */ |
| 1815 | |
| 1816 | if ( tuple_coords[i] == 0 ) |
| 1817 | { |
Werner Lemberg | 8cfc41a | 2020-07-25 12:23:22 +0200 | [diff] [blame] | 1818 | FT_TRACE6(( " tuple coordinate is zero, ignore\n" )); |
Werner Lemberg | cdee7d1 | 2015-05-31 11:54:42 +0200 | [diff] [blame] | 1819 | continue; |
| 1820 | } |
| 1821 | |
Behdad Esfahbod | 99eff67 | 2016-04-16 07:32:23 +0200 | [diff] [blame] | 1822 | if ( blend->normalizedcoords[i] == 0 ) |
Werner Lemberg | cdee7d1 | 2015-05-31 11:54:42 +0200 | [diff] [blame] | 1823 | { |
| 1824 | FT_TRACE6(( " axis coordinate is zero, stop\n" )); |
| 1825 | apply = 0; |
| 1826 | break; |
| 1827 | } |
| 1828 | |
Behdad Esfahbod | 99eff67 | 2016-04-16 07:32:23 +0200 | [diff] [blame] | 1829 | if ( blend->normalizedcoords[i] == tuple_coords[i] ) |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 1830 | { |
Alexei Podtelezhnikov | 547f82f | 2018-11-03 23:00:36 -0400 | [diff] [blame] | 1831 | FT_TRACE6(( " tuple coordinate %.5f fits perfectly\n", |
Werner Lemberg | cdee7d1 | 2015-05-31 11:54:42 +0200 | [diff] [blame] | 1832 | tuple_coords[i] / 65536.0 )); |
Behdad Esfahbod | 99eff67 | 2016-04-16 07:32:23 +0200 | [diff] [blame] | 1833 | /* `apply' does not change */ |
| 1834 | continue; |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 1835 | } |
| 1836 | |
Behdad Esfahbod | 99eff67 | 2016-04-16 07:32:23 +0200 | [diff] [blame] | 1837 | if ( !( tupleIndex & GX_TI_INTERMEDIATE_TUPLE ) ) |
Werner Lemberg | cdee7d1 | 2015-05-31 11:54:42 +0200 | [diff] [blame] | 1838 | { |
Behdad Esfahbod | 99eff67 | 2016-04-16 07:32:23 +0200 | [diff] [blame] | 1839 | /* not an intermediate tuple */ |
| 1840 | |
| 1841 | if ( blend->normalizedcoords[i] < FT_MIN( 0, tuple_coords[i] ) || |
| 1842 | blend->normalizedcoords[i] > FT_MAX( 0, tuple_coords[i] ) ) |
| 1843 | { |
Alexei Podtelezhnikov | 547f82f | 2018-11-03 23:00:36 -0400 | [diff] [blame] | 1844 | FT_TRACE6(( " tuple coordinate %.5f is exceeded, stop\n", |
Behdad Esfahbod | 99eff67 | 2016-04-16 07:32:23 +0200 | [diff] [blame] | 1845 | tuple_coords[i] / 65536.0 )); |
| 1846 | apply = 0; |
| 1847 | break; |
| 1848 | } |
| 1849 | |
Alexei Podtelezhnikov | 547f82f | 2018-11-03 23:00:36 -0400 | [diff] [blame] | 1850 | FT_TRACE6(( " tuple coordinate %.5f fits\n", |
Werner Lemberg | cdee7d1 | 2015-05-31 11:54:42 +0200 | [diff] [blame] | 1851 | tuple_coords[i] / 65536.0 )); |
Behdad Esfahbod | 74c0a72 | 2016-03-09 20:35:27 +0100 | [diff] [blame] | 1852 | apply = FT_MulDiv( apply, |
| 1853 | blend->normalizedcoords[i], |
| 1854 | tuple_coords[i] ); |
Werner Lemberg | cdee7d1 | 2015-05-31 11:54:42 +0200 | [diff] [blame] | 1855 | } |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 1856 | else |
Werner Lemberg | cdee7d1 | 2015-05-31 11:54:42 +0200 | [diff] [blame] | 1857 | { |
Behdad Esfahbod | 99eff67 | 2016-04-16 07:32:23 +0200 | [diff] [blame] | 1858 | /* intermediate tuple */ |
| 1859 | |
Alexei Podtelezhnikov | d95a12b | 2018-11-03 23:02:58 -0400 | [diff] [blame] | 1860 | if ( blend->normalizedcoords[i] <= im_start_coords[i] || |
| 1861 | blend->normalizedcoords[i] >= im_end_coords[i] ) |
Behdad Esfahbod | 99eff67 | 2016-04-16 07:32:23 +0200 | [diff] [blame] | 1862 | { |
Alexei Podtelezhnikov | cc288e3 | 2018-11-04 22:09:16 -0500 | [diff] [blame] | 1863 | FT_TRACE6(( " intermediate tuple range ]%.5f;%.5f[ is exceeded," |
Behdad Esfahbod | 99eff67 | 2016-04-16 07:32:23 +0200 | [diff] [blame] | 1864 | " stop\n", |
| 1865 | im_start_coords[i] / 65536.0, |
| 1866 | im_end_coords[i] / 65536.0 )); |
| 1867 | apply = 0; |
| 1868 | break; |
| 1869 | } |
| 1870 | |
Alexei Podtelezhnikov | cc288e3 | 2018-11-04 22:09:16 -0500 | [diff] [blame] | 1871 | FT_TRACE6(( " intermediate tuple range ]%.5f;%.5f[ fits\n", |
Alexei Podtelezhnikov | 547f82f | 2018-11-03 23:00:36 -0400 | [diff] [blame] | 1872 | im_start_coords[i] / 65536.0, |
| 1873 | im_end_coords[i] / 65536.0 )); |
| 1874 | if ( blend->normalizedcoords[i] < tuple_coords[i] ) |
Behdad Esfahbod | 99eff67 | 2016-04-16 07:32:23 +0200 | [diff] [blame] | 1875 | apply = FT_MulDiv( apply, |
| 1876 | blend->normalizedcoords[i] - im_start_coords[i], |
| 1877 | tuple_coords[i] - im_start_coords[i] ); |
Behdad Esfahbod | 99eff67 | 2016-04-16 07:32:23 +0200 | [diff] [blame] | 1878 | else |
Behdad Esfahbod | 99eff67 | 2016-04-16 07:32:23 +0200 | [diff] [blame] | 1879 | apply = FT_MulDiv( apply, |
| 1880 | im_end_coords[i] - blend->normalizedcoords[i], |
| 1881 | im_end_coords[i] - tuple_coords[i] ); |
Werner Lemberg | cdee7d1 | 2015-05-31 11:54:42 +0200 | [diff] [blame] | 1882 | } |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 1883 | } |
| 1884 | |
Werner Lemberg | 84b0d99 | 2016-12-29 10:38:51 +0100 | [diff] [blame] | 1885 | FT_TRACE6(( " apply factor is %.5f\n", apply / 65536.0 )); |
Werner Lemberg | cdee7d1 | 2015-05-31 11:54:42 +0200 | [diff] [blame] | 1886 | |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 1887 | return apply; |
| 1888 | } |
| 1889 | |
| 1890 | |
Werner Lemberg | 4717696 | 2017-03-02 21:42:14 +0100 | [diff] [blame] | 1891 | /* convert from design coordinates to normalized coordinates */ |
| 1892 | |
| 1893 | static void |
| 1894 | ft_var_to_normalized( TT_Face face, |
| 1895 | FT_UInt num_coords, |
| 1896 | FT_Fixed* coords, |
| 1897 | FT_Fixed* normalized ) |
| 1898 | { |
| 1899 | GX_Blend blend; |
| 1900 | FT_MM_Var* mmvar; |
| 1901 | FT_UInt i, j; |
| 1902 | FT_Var_Axis* a; |
| 1903 | GX_AVarSegment av; |
| 1904 | |
| 1905 | |
| 1906 | blend = face->blend; |
| 1907 | mmvar = blend->mmvar; |
| 1908 | |
| 1909 | if ( num_coords > mmvar->num_axis ) |
| 1910 | { |
| 1911 | FT_TRACE2(( "ft_var_to_normalized:" |
| 1912 | " only using first %d of %d coordinates\n", |
| 1913 | mmvar->num_axis, num_coords )); |
| 1914 | num_coords = mmvar->num_axis; |
| 1915 | } |
| 1916 | |
| 1917 | /* Axis normalization is a two-stage process. First we normalize */ |
| 1918 | /* based on the [min,def,max] values for the axis to be [-1,0,1]. */ |
| 1919 | /* Then, if there's an `avar' table, we renormalize this range. */ |
| 1920 | |
Werner Lemberg | 4717696 | 2017-03-02 21:42:14 +0100 | [diff] [blame] | 1921 | a = mmvar->axis; |
| 1922 | for ( i = 0; i < num_coords; i++, a++ ) |
| 1923 | { |
| 1924 | FT_Fixed coord = coords[i]; |
| 1925 | |
| 1926 | |
Werner Lemberg | ef48653 | 2018-01-27 11:16:22 +0100 | [diff] [blame] | 1927 | FT_TRACE5(( " %d: %.5f\n", i, coord / 65536.0 )); |
Werner Lemberg | 4717696 | 2017-03-02 21:42:14 +0100 | [diff] [blame] | 1928 | if ( coord > a->maximum || coord < a->minimum ) |
| 1929 | { |
Werner Lemberg | 272ae5e | 2020-12-07 10:29:24 +0100 | [diff] [blame] | 1930 | FT_TRACE1(( "ft_var_to_normalized: design coordinate %.5f\n", |
| 1931 | coord / 65536.0 )); |
| 1932 | FT_TRACE1(( " is out of range [%.5f;%.5f];" |
| 1933 | " clamping\n", |
| 1934 | a->minimum / 65536.0, |
| 1935 | a->maximum / 65536.0 )); |
Werner Lemberg | 4717696 | 2017-03-02 21:42:14 +0100 | [diff] [blame] | 1936 | } |
| 1937 | |
Alexei Podtelezhnikov | c5cd2a3 | 2021-11-10 08:46:26 -0500 | [diff] [blame] | 1938 | if ( coord > a->def ) |
| 1939 | normalized[i] = coord >= a->maximum ? 0x10000L : |
| 1940 | FT_DivFix( SUB_LONG( coord, a->def ), |
Werner Lemberg | 6ceeb87 | 2018-07-05 22:31:10 +0200 | [diff] [blame] | 1941 | SUB_LONG( a->maximum, a->def ) ); |
Alexei Podtelezhnikov | c5cd2a3 | 2021-11-10 08:46:26 -0500 | [diff] [blame] | 1942 | else if ( coord < a->def ) |
| 1943 | normalized[i] = coord <= a->minimum ? -0x10000L : |
| 1944 | FT_DivFix( SUB_LONG( coord, a->def ), |
| 1945 | SUB_LONG( a->def, a->minimum ) ); |
Werner Lemberg | 4717696 | 2017-03-02 21:42:14 +0100 | [diff] [blame] | 1946 | else |
| 1947 | normalized[i] = 0; |
| 1948 | } |
| 1949 | |
| 1950 | FT_TRACE5(( "\n" )); |
| 1951 | |
| 1952 | for ( ; i < mmvar->num_axis; i++ ) |
| 1953 | normalized[i] = 0; |
| 1954 | |
| 1955 | if ( blend->avar_segment ) |
| 1956 | { |
| 1957 | FT_TRACE5(( "normalized design coordinates" |
| 1958 | " before applying `avar' data:\n" )); |
| 1959 | |
| 1960 | av = blend->avar_segment; |
| 1961 | for ( i = 0; i < mmvar->num_axis; i++, av++ ) |
| 1962 | { |
| 1963 | for ( j = 1; j < (FT_UInt)av->pairCount; j++ ) |
| 1964 | { |
| 1965 | if ( normalized[i] < av->correspondence[j].fromCoord ) |
| 1966 | { |
| 1967 | FT_TRACE5(( " %.5f\n", normalized[i] / 65536.0 )); |
| 1968 | |
| 1969 | normalized[i] = |
| 1970 | FT_MulDiv( normalized[i] - av->correspondence[j - 1].fromCoord, |
| 1971 | av->correspondence[j].toCoord - |
| 1972 | av->correspondence[j - 1].toCoord, |
| 1973 | av->correspondence[j].fromCoord - |
| 1974 | av->correspondence[j - 1].fromCoord ) + |
| 1975 | av->correspondence[j - 1].toCoord; |
| 1976 | break; |
| 1977 | } |
| 1978 | } |
| 1979 | } |
| 1980 | } |
| 1981 | } |
| 1982 | |
| 1983 | |
| 1984 | /* convert from normalized coordinates to design coordinates */ |
| 1985 | |
| 1986 | static void |
| 1987 | ft_var_to_design( TT_Face face, |
| 1988 | FT_UInt num_coords, |
| 1989 | FT_Fixed* coords, |
| 1990 | FT_Fixed* design ) |
| 1991 | { |
| 1992 | GX_Blend blend; |
| 1993 | FT_MM_Var* mmvar; |
| 1994 | FT_Var_Axis* a; |
| 1995 | |
| 1996 | FT_UInt i, j, nc; |
| 1997 | |
| 1998 | |
| 1999 | blend = face->blend; |
| 2000 | |
| 2001 | nc = num_coords; |
| 2002 | if ( num_coords > blend->num_axis ) |
| 2003 | { |
| 2004 | FT_TRACE2(( "ft_var_to_design:" |
| 2005 | " only using first %d of %d coordinates\n", |
| 2006 | blend->num_axis, num_coords )); |
| 2007 | nc = blend->num_axis; |
| 2008 | } |
| 2009 | |
Werner Lemberg | 55d6abe | 2018-01-03 19:01:15 +0100 | [diff] [blame] | 2010 | for ( i = 0; i < nc; i++ ) |
| 2011 | design[i] = coords[i]; |
Werner Lemberg | 4717696 | 2017-03-02 21:42:14 +0100 | [diff] [blame] | 2012 | |
| 2013 | for ( ; i < num_coords; i++ ) |
| 2014 | design[i] = 0; |
| 2015 | |
| 2016 | if ( blend->avar_segment ) |
| 2017 | { |
| 2018 | GX_AVarSegment av = blend->avar_segment; |
| 2019 | |
| 2020 | |
| 2021 | FT_TRACE5(( "design coordinates" |
| 2022 | " after removing `avar' distortion:\n" )); |
| 2023 | |
| 2024 | for ( i = 0; i < nc; i++, av++ ) |
| 2025 | { |
| 2026 | for ( j = 1; j < (FT_UInt)av->pairCount; j++ ) |
| 2027 | { |
| 2028 | if ( design[i] < av->correspondence[j].toCoord ) |
| 2029 | { |
| 2030 | design[i] = |
| 2031 | FT_MulDiv( design[i] - av->correspondence[j - 1].toCoord, |
| 2032 | av->correspondence[j].fromCoord - |
| 2033 | av->correspondence[j - 1].fromCoord, |
| 2034 | av->correspondence[j].toCoord - |
| 2035 | av->correspondence[j - 1].toCoord ) + |
| 2036 | av->correspondence[j - 1].fromCoord; |
| 2037 | |
| 2038 | FT_TRACE5(( " %.5f\n", design[i] / 65536.0 )); |
| 2039 | break; |
| 2040 | } |
| 2041 | } |
| 2042 | } |
| 2043 | } |
| 2044 | |
| 2045 | mmvar = blend->mmvar; |
| 2046 | a = mmvar->axis; |
| 2047 | |
| 2048 | for ( i = 0; i < nc; i++, a++ ) |
| 2049 | { |
| 2050 | if ( design[i] < 0 ) |
| 2051 | design[i] = a->def + FT_MulFix( design[i], |
| 2052 | a->def - a->minimum ); |
| 2053 | else if ( design[i] > 0 ) |
| 2054 | design[i] = a->def + FT_MulFix( design[i], |
| 2055 | a->maximum - a->def ); |
| 2056 | else |
| 2057 | design[i] = a->def; |
| 2058 | } |
| 2059 | } |
| 2060 | |
| 2061 | |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 2062 | /*************************************************************************/ |
| 2063 | /*************************************************************************/ |
| 2064 | /***** *****/ |
| 2065 | /***** MULTIPLE MASTERS SERVICE FUNCTIONS *****/ |
| 2066 | /***** *****/ |
| 2067 | /*************************************************************************/ |
| 2068 | /*************************************************************************/ |
| 2069 | |
| 2070 | |
Werner Lemberg | 2b0b422 | 2008-05-28 22:17:28 +0000 | [diff] [blame] | 2071 | typedef struct GX_FVar_Head_ |
| 2072 | { |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 2073 | FT_Long version; |
| 2074 | FT_UShort offsetToData; |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 2075 | FT_UShort axisCount; |
| 2076 | FT_UShort axisSize; |
| 2077 | FT_UShort instanceCount; |
| 2078 | FT_UShort instanceSize; |
| 2079 | |
| 2080 | } GX_FVar_Head; |
| 2081 | |
| 2082 | |
Werner Lemberg | 2b0b422 | 2008-05-28 22:17:28 +0000 | [diff] [blame] | 2083 | typedef struct fvar_axis_ |
| 2084 | { |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 2085 | FT_ULong axisTag; |
Werner Lemberg | 1f7a4e1 | 2015-02-17 10:17:56 +0100 | [diff] [blame] | 2086 | FT_Fixed minValue; |
| 2087 | FT_Fixed defaultValue; |
| 2088 | FT_Fixed maxValue; |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 2089 | FT_UShort flags; |
| 2090 | FT_UShort nameID; |
| 2091 | |
| 2092 | } GX_FVar_Axis; |
| 2093 | |
| 2094 | |
Werner Lemberg | 9ac9060 | 2018-06-03 09:01:17 +0200 | [diff] [blame] | 2095 | /************************************************************************** |
| 2096 | * |
| 2097 | * @Function: |
| 2098 | * TT_Get_MM_Var |
| 2099 | * |
| 2100 | * @Description: |
| 2101 | * Check that the font's `fvar' table is valid, parse it, and return |
| 2102 | * those data. It also loads (and parses) the `MVAR' table, if |
| 2103 | * possible. |
| 2104 | * |
| 2105 | * @InOut: |
| 2106 | * face :: |
| 2107 | * The font face. |
| 2108 | * TT_Get_MM_Var initializes the blend structure. |
| 2109 | * |
| 2110 | * @Output: |
| 2111 | * master :: |
| 2112 | * The `fvar' data (must be freed by caller). Can be NULL, |
| 2113 | * which makes this function simply load MM support. |
| 2114 | * |
| 2115 | * @Return: |
| 2116 | * FreeType error code. 0 means success. |
| 2117 | */ |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 2118 | FT_LOCAL_DEF( FT_Error ) |
| 2119 | TT_Get_MM_Var( TT_Face face, |
| 2120 | FT_MM_Var* *master ) |
| 2121 | { |
Werner Lemberg | b19cdc9 | 2017-09-21 11:02:35 +0200 | [diff] [blame] | 2122 | FT_Stream stream = face->root.stream; |
| 2123 | FT_Memory memory = face->root.memory; |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 2124 | FT_ULong table_len; |
Werner Lemberg | b19cdc9 | 2017-09-21 11:02:35 +0200 | [diff] [blame] | 2125 | FT_Error error = FT_Err_Ok; |
| 2126 | FT_ULong fvar_start = 0; |
Werner Lemberg | 27fee7f | 2017-03-06 20:45:44 +0100 | [diff] [blame] | 2127 | FT_UInt i, j; |
suzuki toshiya | e62c876 | 2011-06-15 02:48:33 +0900 | [diff] [blame] | 2128 | FT_MM_Var* mmvar = NULL; |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 2129 | FT_Fixed* next_coords; |
Werner Lemberg | 588e38e | 2017-03-04 11:04:24 +0100 | [diff] [blame] | 2130 | FT_Fixed* nsc; |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 2131 | FT_String* next_name; |
| 2132 | FT_Var_Axis* a; |
Werner Lemberg | 27fee7f | 2017-03-06 20:45:44 +0100 | [diff] [blame] | 2133 | FT_Fixed* c; |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 2134 | FT_Var_Named_Style* ns; |
Werner Lemberg | 2149b51 | 2021-03-13 19:08:09 +0100 | [diff] [blame] | 2135 | GX_FVar_Head fvar_head = { 0, 0, 0, 0, 0, 0 }; |
Werner Lemberg | b19cdc9 | 2017-09-21 11:02:35 +0200 | [diff] [blame] | 2136 | FT_Bool usePsName = 0; |
Werner Lemberg | 27fee7f | 2017-03-06 20:45:44 +0100 | [diff] [blame] | 2137 | FT_UInt num_instances; |
Werner Lemberg | b19cdc9 | 2017-09-21 11:02:35 +0200 | [diff] [blame] | 2138 | FT_UInt num_axes; |
Werner Lemberg | f43b309 | 2017-08-05 18:22:17 +0200 | [diff] [blame] | 2139 | FT_UShort* axis_flags; |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 2140 | |
Werner Lemberg | b19cdc9 | 2017-09-21 11:02:35 +0200 | [diff] [blame] | 2141 | FT_Offset mmvar_size; |
| 2142 | FT_Offset axis_flags_size; |
| 2143 | FT_Offset axis_size; |
| 2144 | FT_Offset namedstyle_size; |
| 2145 | FT_Offset next_coords_size; |
| 2146 | FT_Offset next_name_size; |
| 2147 | |
| 2148 | FT_Bool need_init; |
| 2149 | |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 2150 | static const FT_Frame_Field fvar_fields[] = |
| 2151 | { |
| 2152 | |
| 2153 | #undef FT_STRUCTURE |
| 2154 | #define FT_STRUCTURE GX_FVar_Head |
| 2155 | |
Werner Lemberg | 3bcad43 | 2004-05-06 11:48:35 +0000 | [diff] [blame] | 2156 | FT_FRAME_START( 16 ), |
Werner Lemberg | f502092 | 2017-01-23 11:47:40 +0100 | [diff] [blame] | 2157 | FT_FRAME_LONG ( version ), |
| 2158 | FT_FRAME_USHORT ( offsetToData ), |
| 2159 | FT_FRAME_SKIP_SHORT, |
| 2160 | FT_FRAME_USHORT ( axisCount ), |
| 2161 | FT_FRAME_USHORT ( axisSize ), |
| 2162 | FT_FRAME_USHORT ( instanceCount ), |
| 2163 | FT_FRAME_USHORT ( instanceSize ), |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 2164 | FT_FRAME_END |
| 2165 | }; |
| 2166 | |
| 2167 | static const FT_Frame_Field fvaraxis_fields[] = |
| 2168 | { |
| 2169 | |
| 2170 | #undef FT_STRUCTURE |
| 2171 | #define FT_STRUCTURE GX_FVar_Axis |
| 2172 | |
| 2173 | FT_FRAME_START( 20 ), |
| 2174 | FT_FRAME_ULONG ( axisTag ), |
Werner Lemberg | 1f7a4e1 | 2015-02-17 10:17:56 +0100 | [diff] [blame] | 2175 | FT_FRAME_LONG ( minValue ), |
| 2176 | FT_FRAME_LONG ( defaultValue ), |
| 2177 | FT_FRAME_LONG ( maxValue ), |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 2178 | FT_FRAME_USHORT( flags ), |
| 2179 | FT_FRAME_USHORT( nameID ), |
| 2180 | FT_FRAME_END |
| 2181 | }; |
| 2182 | |
| 2183 | |
Werner Lemberg | 0aa3616 | 2015-03-08 22:50:37 +0100 | [diff] [blame] | 2184 | /* read the font data and set up the internal representation */ |
| 2185 | /* if not already done */ |
| 2186 | |
Werner Lemberg | b19cdc9 | 2017-09-21 11:02:35 +0200 | [diff] [blame] | 2187 | need_init = !face->blend; |
| 2188 | |
| 2189 | if ( need_init ) |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 2190 | { |
Werner Lemberg | cdee7d1 | 2015-05-31 11:54:42 +0200 | [diff] [blame] | 2191 | FT_TRACE2(( "FVAR " )); |
| 2192 | |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 2193 | /* both `fvar' and `gvar' must be present */ |
Werner Lemberg | 5d664b6 | 2016-12-17 20:47:42 +0100 | [diff] [blame] | 2194 | if ( FT_SET_ERROR( face->goto_table( face, TTAG_gvar, |
| 2195 | stream, &table_len ) ) ) |
Werner Lemberg | cdee7d1 | 2015-05-31 11:54:42 +0200 | [diff] [blame] | 2196 | { |
Dave Arnold | edf4014 | 2016-12-15 21:56:44 +0100 | [diff] [blame] | 2197 | /* CFF2 is an alternate to gvar here */ |
Werner Lemberg | 5d664b6 | 2016-12-17 20:47:42 +0100 | [diff] [blame] | 2198 | if ( FT_SET_ERROR( face->goto_table( face, TTAG_CFF2, |
| 2199 | stream, &table_len ) ) ) |
Dave Arnold | edf4014 | 2016-12-15 21:56:44 +0100 | [diff] [blame] | 2200 | { |
Werner Lemberg | a6adb25 | 2020-12-02 14:15:07 +0100 | [diff] [blame] | 2201 | FT_TRACE1(( "\n" )); |
| 2202 | FT_TRACE1(( "TT_Get_MM_Var: `gvar' or `CFF2' table is missing\n" )); |
Dave Arnold | edf4014 | 2016-12-15 21:56:44 +0100 | [diff] [blame] | 2203 | goto Exit; |
| 2204 | } |
Werner Lemberg | cdee7d1 | 2015-05-31 11:54:42 +0200 | [diff] [blame] | 2205 | } |
David Turner | c28b8c1 | 2004-06-24 20:18:24 +0000 | [diff] [blame] | 2206 | |
Werner Lemberg | 5d664b6 | 2016-12-17 20:47:42 +0100 | [diff] [blame] | 2207 | if ( FT_SET_ERROR( face->goto_table( face, TTAG_fvar, |
| 2208 | stream, &table_len ) ) ) |
Werner Lemberg | cdee7d1 | 2015-05-31 11:54:42 +0200 | [diff] [blame] | 2209 | { |
| 2210 | FT_TRACE1(( "is missing\n" )); |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 2211 | goto Exit; |
Werner Lemberg | cdee7d1 | 2015-05-31 11:54:42 +0200 | [diff] [blame] | 2212 | } |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 2213 | |
| 2214 | fvar_start = FT_STREAM_POS( ); |
Werner Lemberg | ee6e92c | 2004-05-11 06:45:27 +0000 | [diff] [blame] | 2215 | |
Werner Lemberg | 25f3ac2 | 2016-12-18 15:50:18 +0100 | [diff] [blame] | 2216 | /* the validity of the `fvar' header data was already checked */ |
| 2217 | /* in function `sfnt_init_face' */ |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 2218 | if ( FT_STREAM_READ_FIELDS( fvar_fields, &fvar_head ) ) |
| 2219 | goto Exit; |
| 2220 | |
Werner Lemberg | 25f3ac2 | 2016-12-18 15:50:18 +0100 | [diff] [blame] | 2221 | usePsName = FT_BOOL( fvar_head.instanceSize == |
| 2222 | 6 + 4 * fvar_head.axisCount ); |
Dave Arnold | 097cd87 | 2016-12-15 12:58:26 +0100 | [diff] [blame] | 2223 | |
Werner Lemberg | cdee7d1 | 2015-05-31 11:54:42 +0200 | [diff] [blame] | 2224 | FT_TRACE2(( "loaded\n" )); |
| 2225 | |
Werner Lemberg | 50f693a | 2018-01-27 09:33:17 +0100 | [diff] [blame] | 2226 | FT_TRACE5(( "%d variation ax%s\n", |
| 2227 | fvar_head.axisCount, |
| 2228 | fvar_head.axisCount == 1 ? "is" : "es" )); |
Werner Lemberg | cdee7d1 | 2015-05-31 11:54:42 +0200 | [diff] [blame] | 2229 | |
David Turner | 9ca7825 | 2006-05-02 09:00:29 +0000 | [diff] [blame] | 2230 | if ( FT_NEW( face->blend ) ) |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 2231 | goto Exit; |
| 2232 | |
Werner Lemberg | 994eb2b | 2018-01-26 23:17:43 +0100 | [diff] [blame] | 2233 | num_axes = fvar_head.axisCount; |
| 2234 | face->blend->num_axis = num_axes; |
Werner Lemberg | b19cdc9 | 2017-09-21 11:02:35 +0200 | [diff] [blame] | 2235 | } |
| 2236 | else |
| 2237 | num_axes = face->blend->num_axis; |
Werner Lemberg | 27fee7f | 2017-03-06 20:45:44 +0100 | [diff] [blame] | 2238 | |
Werner Lemberg | b19cdc9 | 2017-09-21 11:02:35 +0200 | [diff] [blame] | 2239 | /* `num_instances' holds the number of all named instances, */ |
| 2240 | /* including the default instance which might be missing */ |
| 2241 | /* in fvar's table of named instances */ |
Werner Lemberg | f89c67f | 2017-10-07 13:10:53 +0200 | [diff] [blame] | 2242 | num_instances = (FT_UInt)face->root.style_flags >> 16; |
Werner Lemberg | 3b3cb32 | 2017-09-21 09:03:20 +0200 | [diff] [blame] | 2243 | |
Werner Lemberg | b19cdc9 | 2017-09-21 11:02:35 +0200 | [diff] [blame] | 2244 | /* prepare storage area for MM data; this cannot overflow */ |
| 2245 | /* 32-bit arithmetic because of the size limits used in the */ |
| 2246 | /* `fvar' table validity check in `sfnt_init_face' */ |
| 2247 | |
| 2248 | /* the various `*_size' variables, which we also use as */ |
Werner Lemberg | 7d1d3b9 | 2019-08-26 09:08:56 +0200 | [diff] [blame] | 2249 | /* offsets into the `mmvar' array, must be multiples of the */ |
Werner Lemberg | b19cdc9 | 2017-09-21 11:02:35 +0200 | [diff] [blame] | 2250 | /* pointer size (except the last one); without such an */ |
| 2251 | /* alignment there might be runtime errors due to */ |
| 2252 | /* misaligned addresses */ |
Werner Lemberg | 3b3cb32 | 2017-09-21 09:03:20 +0200 | [diff] [blame] | 2253 | #undef ALIGN_SIZE |
| 2254 | #define ALIGN_SIZE( n ) \ |
| 2255 | ( ( (n) + sizeof (void*) - 1 ) & ~( sizeof (void*) - 1 ) ) |
| 2256 | |
Werner Lemberg | b19cdc9 | 2017-09-21 11:02:35 +0200 | [diff] [blame] | 2257 | mmvar_size = ALIGN_SIZE( sizeof ( FT_MM_Var ) ); |
| 2258 | axis_flags_size = ALIGN_SIZE( num_axes * |
| 2259 | sizeof ( FT_UShort ) ); |
| 2260 | axis_size = ALIGN_SIZE( num_axes * |
| 2261 | sizeof ( FT_Var_Axis ) ); |
| 2262 | namedstyle_size = ALIGN_SIZE( num_instances * |
| 2263 | sizeof ( FT_Var_Named_Style ) ); |
| 2264 | next_coords_size = ALIGN_SIZE( num_instances * |
| 2265 | num_axes * |
| 2266 | sizeof ( FT_Fixed ) ); |
| 2267 | next_name_size = num_axes * 5; |
Werner Lemberg | 3b3cb32 | 2017-09-21 09:03:20 +0200 | [diff] [blame] | 2268 | |
Werner Lemberg | b19cdc9 | 2017-09-21 11:02:35 +0200 | [diff] [blame] | 2269 | if ( need_init ) |
| 2270 | { |
Werner Lemberg | 3b3cb32 | 2017-09-21 09:03:20 +0200 | [diff] [blame] | 2271 | face->blend->mmvar_len = mmvar_size + |
| 2272 | axis_flags_size + |
| 2273 | axis_size + |
| 2274 | namedstyle_size + |
| 2275 | next_coords_size + |
| 2276 | next_name_size; |
David Turner | 9ca7825 | 2006-05-02 09:00:29 +0000 | [diff] [blame] | 2277 | |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 2278 | if ( FT_ALLOC( mmvar, face->blend->mmvar_len ) ) |
| 2279 | goto Exit; |
| 2280 | face->blend->mmvar = mmvar; |
| 2281 | |
Werner Lemberg | 0aa3616 | 2015-03-08 22:50:37 +0100 | [diff] [blame] | 2282 | /* set up pointers and offsets into the `mmvar' array; */ |
| 2283 | /* the data gets filled in later on */ |
| 2284 | |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 2285 | mmvar->num_axis = |
Werner Lemberg | b19cdc9 | 2017-09-21 11:02:35 +0200 | [diff] [blame] | 2286 | num_axes; |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 2287 | mmvar->num_designs = |
Werner Lemberg | 45392b7 | 2013-06-05 13:43:20 +0200 | [diff] [blame] | 2288 | ~0U; /* meaningless in this context; each glyph */ |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 2289 | /* may have a different number of designs */ |
| 2290 | /* (or tuples, as called by Apple) */ |
| 2291 | mmvar->num_namedstyles = |
Werner Lemberg | 27fee7f | 2017-03-06 20:45:44 +0100 | [diff] [blame] | 2292 | num_instances; |
Werner Lemberg | f43b309 | 2017-08-05 18:22:17 +0200 | [diff] [blame] | 2293 | |
| 2294 | /* alas, no public field in `FT_Var_Axis' for axis flags */ |
| 2295 | axis_flags = |
Werner Lemberg | 3b3cb32 | 2017-09-21 09:03:20 +0200 | [diff] [blame] | 2296 | (FT_UShort*)( (char*)mmvar + mmvar_size ); |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 2297 | mmvar->axis = |
Werner Lemberg | 3b3cb32 | 2017-09-21 09:03:20 +0200 | [diff] [blame] | 2298 | (FT_Var_Axis*)( (char*)axis_flags + axis_flags_size ); |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 2299 | mmvar->namedstyle = |
Werner Lemberg | 3b3cb32 | 2017-09-21 09:03:20 +0200 | [diff] [blame] | 2300 | (FT_Var_Named_Style*)( (char*)mmvar->axis + axis_size ); |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 2301 | |
Werner Lemberg | 3b3cb32 | 2017-09-21 09:03:20 +0200 | [diff] [blame] | 2302 | next_coords = (FT_Fixed*)( (char*)mmvar->namedstyle + |
| 2303 | namedstyle_size ); |
Werner Lemberg | 27fee7f | 2017-03-06 20:45:44 +0100 | [diff] [blame] | 2304 | for ( i = 0; i < num_instances; i++ ) |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 2305 | { |
| 2306 | mmvar->namedstyle[i].coords = next_coords; |
Werner Lemberg | b19cdc9 | 2017-09-21 11:02:35 +0200 | [diff] [blame] | 2307 | next_coords += num_axes; |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 2308 | } |
| 2309 | |
Werner Lemberg | 3b3cb32 | 2017-09-21 09:03:20 +0200 | [diff] [blame] | 2310 | next_name = (FT_String*)( (char*)mmvar->namedstyle + |
| 2311 | namedstyle_size + next_coords_size ); |
Werner Lemberg | b19cdc9 | 2017-09-21 11:02:35 +0200 | [diff] [blame] | 2312 | for ( i = 0; i < num_axes; i++ ) |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 2313 | { |
| 2314 | mmvar->axis[i].name = next_name; |
| 2315 | next_name += 5; |
| 2316 | } |
| 2317 | |
Werner Lemberg | 0aa3616 | 2015-03-08 22:50:37 +0100 | [diff] [blame] | 2318 | /* now fill in the data */ |
| 2319 | |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 2320 | if ( FT_STREAM_SEEK( fvar_start + fvar_head.offsetToData ) ) |
| 2321 | goto Exit; |
| 2322 | |
| 2323 | a = mmvar->axis; |
Werner Lemberg | b19cdc9 | 2017-09-21 11:02:35 +0200 | [diff] [blame] | 2324 | for ( i = 0; i < num_axes; i++ ) |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 2325 | { |
| 2326 | GX_FVar_Axis axis_rec; |
| 2327 | |
Werner Lemberg | 50f693a | 2018-01-27 09:33:17 +0100 | [diff] [blame] | 2328 | #ifdef FT_DEBUG_LEVEL_TRACE |
| 2329 | int invalid = 0; |
| 2330 | #endif |
| 2331 | |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 2332 | |
| 2333 | if ( FT_STREAM_READ_FIELDS( fvaraxis_fields, &axis_rec ) ) |
| 2334 | goto Exit; |
| 2335 | a->tag = axis_rec.axisTag; |
Werner Lemberg | 1f7a4e1 | 2015-02-17 10:17:56 +0100 | [diff] [blame] | 2336 | a->minimum = axis_rec.minValue; |
| 2337 | a->def = axis_rec.defaultValue; |
| 2338 | a->maximum = axis_rec.maxValue; |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 2339 | a->strid = axis_rec.nameID; |
| 2340 | |
Werner Lemberg | 3273a99 | 2004-07-31 23:04:23 +0000 | [diff] [blame] | 2341 | a->name[0] = (FT_String)( a->tag >> 24 ); |
| 2342 | a->name[1] = (FT_String)( ( a->tag >> 16 ) & 0xFF ); |
| 2343 | a->name[2] = (FT_String)( ( a->tag >> 8 ) & 0xFF ); |
| 2344 | a->name[3] = (FT_String)( ( a->tag ) & 0xFF ); |
Werner Lemberg | 0aa3616 | 2015-03-08 22:50:37 +0100 | [diff] [blame] | 2345 | a->name[4] = '\0'; |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 2346 | |
Werner Lemberg | f43b309 | 2017-08-05 18:22:17 +0200 | [diff] [blame] | 2347 | *axis_flags = axis_rec.flags; |
| 2348 | |
Werner Lemberg | 91fc3bd | 2016-12-29 21:34:46 +0100 | [diff] [blame] | 2349 | if ( a->minimum > a->def || |
| 2350 | a->def > a->maximum ) |
| 2351 | { |
Werner Lemberg | 91fc3bd | 2016-12-29 21:34:46 +0100 | [diff] [blame] | 2352 | a->minimum = a->def; |
| 2353 | a->maximum = a->def; |
Werner Lemberg | 50f693a | 2018-01-27 09:33:17 +0100 | [diff] [blame] | 2354 | |
| 2355 | #ifdef FT_DEBUG_LEVEL_TRACE |
| 2356 | invalid = 1; |
| 2357 | #endif |
Werner Lemberg | 91fc3bd | 2016-12-29 21:34:46 +0100 | [diff] [blame] | 2358 | } |
| 2359 | |
Werner Lemberg | 50f693a | 2018-01-27 09:33:17 +0100 | [diff] [blame] | 2360 | #ifdef FT_DEBUG_LEVEL_TRACE |
| 2361 | if ( i == 0 ) |
| 2362 | FT_TRACE5(( " idx tag " |
| 2363 | /* " XXX `XXXX'" */ |
| 2364 | " minimum default maximum flags\n" )); |
| 2365 | /* " XXXX.XXXXX XXXX.XXXXX XXXX.XXXXX 0xXXXX" */ |
| 2366 | |
| 2367 | FT_TRACE5(( " %3d `%s'" |
| 2368 | " %10.5f %10.5f %10.5f 0x%04X%s\n", |
| 2369 | i, |
Werner Lemberg | cdee7d1 | 2015-05-31 11:54:42 +0200 | [diff] [blame] | 2370 | a->name, |
| 2371 | a->minimum / 65536.0, |
| 2372 | a->def / 65536.0, |
Werner Lemberg | f43b309 | 2017-08-05 18:22:17 +0200 | [diff] [blame] | 2373 | a->maximum / 65536.0, |
Werner Lemberg | 50f693a | 2018-01-27 09:33:17 +0100 | [diff] [blame] | 2374 | *axis_flags, |
| 2375 | invalid ? " (invalid, disabled)" : "" )); |
| 2376 | #endif |
Werner Lemberg | cdee7d1 | 2015-05-31 11:54:42 +0200 | [diff] [blame] | 2377 | |
Werner Lemberg | 0aa3616 | 2015-03-08 22:50:37 +0100 | [diff] [blame] | 2378 | a++; |
Werner Lemberg | f43b309 | 2017-08-05 18:22:17 +0200 | [diff] [blame] | 2379 | axis_flags++; |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 2380 | } |
| 2381 | |
Werner Lemberg | cdee7d1 | 2015-05-31 11:54:42 +0200 | [diff] [blame] | 2382 | FT_TRACE5(( "\n" )); |
| 2383 | |
Werner Lemberg | 27fee7f | 2017-03-06 20:45:44 +0100 | [diff] [blame] | 2384 | /* named instance coordinates are stored as design coordinates; */ |
| 2385 | /* we have to convert them to normalized coordinates also */ |
| 2386 | if ( FT_NEW_ARRAY( face->blend->normalized_stylecoords, |
Werner Lemberg | b19cdc9 | 2017-09-21 11:02:35 +0200 | [diff] [blame] | 2387 | num_axes * num_instances ) ) |
Werner Lemberg | 27fee7f | 2017-03-06 20:45:44 +0100 | [diff] [blame] | 2388 | goto Exit; |
Werner Lemberg | 588e38e | 2017-03-04 11:04:24 +0100 | [diff] [blame] | 2389 | |
Werner Lemberg | 4a62922 | 2017-03-12 10:19:53 +0100 | [diff] [blame] | 2390 | if ( fvar_head.instanceCount && !face->blend->avar_loaded ) |
Behdad Esfahbod | 55bbb98 | 2017-08-01 09:17:02 +0200 | [diff] [blame] | 2391 | { |
| 2392 | FT_ULong offset = FT_STREAM_POS(); |
| 2393 | |
| 2394 | |
Werner Lemberg | 27fee7f | 2017-03-06 20:45:44 +0100 | [diff] [blame] | 2395 | ft_var_load_avar( face ); |
Werner Lemberg | 588e38e | 2017-03-04 11:04:24 +0100 | [diff] [blame] | 2396 | |
Behdad Esfahbod | 55bbb98 | 2017-08-01 09:17:02 +0200 | [diff] [blame] | 2397 | if ( FT_STREAM_SEEK( offset ) ) |
| 2398 | goto Exit; |
| 2399 | } |
| 2400 | |
Werner Lemberg | ef48653 | 2018-01-27 11:16:22 +0100 | [diff] [blame] | 2401 | FT_TRACE5(( "%d instance%s\n", |
| 2402 | fvar_head.instanceCount, |
| 2403 | fvar_head.instanceCount == 1 ? "" : "s" )); |
| 2404 | |
Werner Lemberg | 588e38e | 2017-03-04 11:04:24 +0100 | [diff] [blame] | 2405 | ns = mmvar->namedstyle; |
| 2406 | nsc = face->blend->normalized_stylecoords; |
Werner Lemberg | 0aa3616 | 2015-03-08 22:50:37 +0100 | [diff] [blame] | 2407 | for ( i = 0; i < fvar_head.instanceCount; i++, ns++ ) |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 2408 | { |
Dave Arnold | 097cd87 | 2016-12-15 12:58:26 +0100 | [diff] [blame] | 2409 | /* PostScript names add 2 bytes to the instance record size */ |
| 2410 | if ( FT_FRAME_ENTER( ( usePsName ? 6L : 4L ) + |
Werner Lemberg | b19cdc9 | 2017-09-21 11:02:35 +0200 | [diff] [blame] | 2411 | 4L * num_axes ) ) |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 2412 | goto Exit; |
| 2413 | |
| 2414 | ns->strid = FT_GET_USHORT(); |
| 2415 | (void) /* flags = */ FT_GET_USHORT(); |
| 2416 | |
Werner Lemberg | 27fee7f | 2017-03-06 20:45:44 +0100 | [diff] [blame] | 2417 | c = ns->coords; |
Werner Lemberg | b19cdc9 | 2017-09-21 11:02:35 +0200 | [diff] [blame] | 2418 | for ( j = 0; j < num_axes; j++, c++ ) |
Werner Lemberg | 27fee7f | 2017-03-06 20:45:44 +0100 | [diff] [blame] | 2419 | *c = FT_GET_LONG(); |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 2420 | |
Werner Lemberg | 7e50824 | 2017-08-01 12:44:35 +0200 | [diff] [blame] | 2421 | /* valid psid values are 6, [256;32767], and 0xFFFF */ |
Dave Arnold | 097cd87 | 2016-12-15 12:58:26 +0100 | [diff] [blame] | 2422 | if ( usePsName ) |
| 2423 | ns->psid = FT_GET_USHORT(); |
Werner Lemberg | 7e50824 | 2017-08-01 12:44:35 +0200 | [diff] [blame] | 2424 | else |
| 2425 | ns->psid = 0xFFFF; |
Dave Arnold | 097cd87 | 2016-12-15 12:58:26 +0100 | [diff] [blame] | 2426 | |
Werner Lemberg | ef48653 | 2018-01-27 11:16:22 +0100 | [diff] [blame] | 2427 | #ifdef FT_DEBUG_LEVEL_TRACE |
| 2428 | { |
| 2429 | SFNT_Service sfnt = (SFNT_Service)face->sfnt; |
| 2430 | |
| 2431 | FT_String* strname = NULL; |
| 2432 | FT_String* psname = NULL; |
| 2433 | |
| 2434 | FT_ULong pos; |
| 2435 | |
| 2436 | |
| 2437 | pos = FT_STREAM_POS(); |
| 2438 | |
| 2439 | if ( ns->strid != 0xFFFF ) |
| 2440 | { |
| 2441 | (void)sfnt->get_name( face, |
| 2442 | (FT_UShort)ns->strid, |
| 2443 | &strname ); |
| 2444 | if ( strname && !ft_strcmp( strname, ".notdef" ) ) |
| 2445 | strname = NULL; |
| 2446 | } |
| 2447 | |
| 2448 | if ( ns->psid != 0xFFFF ) |
| 2449 | { |
| 2450 | (void)sfnt->get_name( face, |
| 2451 | (FT_UShort)ns->psid, |
| 2452 | &psname ); |
| 2453 | if ( psname && !ft_strcmp( psname, ".notdef" ) ) |
| 2454 | psname = NULL; |
| 2455 | } |
| 2456 | |
| 2457 | (void)FT_STREAM_SEEK( pos ); |
| 2458 | |
| 2459 | FT_TRACE5(( " instance %d (%s%s%s, %s%s%s)\n", |
| 2460 | i, |
| 2461 | strname ? "name: `" : "", |
| 2462 | strname ? strname : "unnamed", |
| 2463 | strname ? "'" : "", |
| 2464 | psname ? "PS name: `" : "", |
| 2465 | psname ? psname : "no PS name", |
| 2466 | psname ? "'" : "" )); |
Werner Lemberg | 597cb3b | 2018-03-30 13:46:03 +0200 | [diff] [blame] | 2467 | |
| 2468 | FT_FREE( strname ); |
| 2469 | FT_FREE( psname ); |
Werner Lemberg | ef48653 | 2018-01-27 11:16:22 +0100 | [diff] [blame] | 2470 | } |
| 2471 | #endif /* FT_DEBUG_LEVEL_TRACE */ |
| 2472 | |
Werner Lemberg | b19cdc9 | 2017-09-21 11:02:35 +0200 | [diff] [blame] | 2473 | ft_var_to_normalized( face, num_axes, ns->coords, nsc ); |
| 2474 | nsc += num_axes; |
Werner Lemberg | 588e38e | 2017-03-04 11:04:24 +0100 | [diff] [blame] | 2475 | |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 2476 | FT_FRAME_EXIT(); |
| 2477 | } |
Werner Lemberg | 07ee1d2 | 2017-01-11 12:50:51 +0100 | [diff] [blame] | 2478 | |
Werner Lemberg | 27fee7f | 2017-03-06 20:45:44 +0100 | [diff] [blame] | 2479 | if ( num_instances != fvar_head.instanceCount ) |
| 2480 | { |
| 2481 | SFNT_Service sfnt = (SFNT_Service)face->sfnt; |
| 2482 | |
Werner Lemberg | 1ede367 | 2017-03-30 00:26:31 +0200 | [diff] [blame] | 2483 | FT_Int found, dummy1, dummy2; |
Behdad Esfahbod | 55bbb98 | 2017-08-01 09:17:02 +0200 | [diff] [blame] | 2484 | FT_UInt strid = ~0U; |
Werner Lemberg | 27fee7f | 2017-03-06 20:45:44 +0100 | [diff] [blame] | 2485 | |
| 2486 | |
| 2487 | /* the default instance is missing in array the */ |
| 2488 | /* of named instances; try to synthesize an entry */ |
| 2489 | found = sfnt->get_name_id( face, |
| 2490 | TT_NAME_ID_TYPOGRAPHIC_SUBFAMILY, |
Werner Lemberg | 1ede367 | 2017-03-30 00:26:31 +0200 | [diff] [blame] | 2491 | &dummy1, |
| 2492 | &dummy2 ); |
| 2493 | if ( found ) |
| 2494 | strid = TT_NAME_ID_TYPOGRAPHIC_SUBFAMILY; |
| 2495 | else |
| 2496 | { |
Werner Lemberg | 27fee7f | 2017-03-06 20:45:44 +0100 | [diff] [blame] | 2497 | found = sfnt->get_name_id( face, |
| 2498 | TT_NAME_ID_FONT_SUBFAMILY, |
Werner Lemberg | 1ede367 | 2017-03-30 00:26:31 +0200 | [diff] [blame] | 2499 | &dummy1, |
| 2500 | &dummy2 ); |
| 2501 | if ( found ) |
| 2502 | strid = TT_NAME_ID_FONT_SUBFAMILY; |
| 2503 | } |
Werner Lemberg | 27fee7f | 2017-03-06 20:45:44 +0100 | [diff] [blame] | 2504 | |
| 2505 | if ( found ) |
| 2506 | { |
Werner Lemberg | 27fee7f | 2017-03-06 20:45:44 +0100 | [diff] [blame] | 2507 | found = sfnt->get_name_id( face, |
| 2508 | TT_NAME_ID_PS_NAME, |
Werner Lemberg | 1ede367 | 2017-03-30 00:26:31 +0200 | [diff] [blame] | 2509 | &dummy1, |
| 2510 | &dummy2 ); |
Werner Lemberg | 27fee7f | 2017-03-06 20:45:44 +0100 | [diff] [blame] | 2511 | if ( found ) |
| 2512 | { |
Werner Lemberg | 27fee7f | 2017-03-06 20:45:44 +0100 | [diff] [blame] | 2513 | FT_TRACE5(( "TT_Get_MM_Var:" |
| 2514 | " Adding default instance to named instances\n" )); |
| 2515 | |
| 2516 | ns = &mmvar->namedstyle[fvar_head.instanceCount]; |
| 2517 | |
Werner Lemberg | 1ede367 | 2017-03-30 00:26:31 +0200 | [diff] [blame] | 2518 | ns->strid = strid; |
| 2519 | ns->psid = TT_NAME_ID_PS_NAME; |
Werner Lemberg | 27fee7f | 2017-03-06 20:45:44 +0100 | [diff] [blame] | 2520 | |
| 2521 | a = mmvar->axis; |
| 2522 | c = ns->coords; |
Werner Lemberg | b19cdc9 | 2017-09-21 11:02:35 +0200 | [diff] [blame] | 2523 | for ( j = 0; j < num_axes; j++, a++, c++ ) |
Werner Lemberg | 27fee7f | 2017-03-06 20:45:44 +0100 | [diff] [blame] | 2524 | *c = a->def; |
| 2525 | } |
| 2526 | } |
| 2527 | } |
| 2528 | |
Werner Lemberg | 07ee1d2 | 2017-01-11 12:50:51 +0100 | [diff] [blame] | 2529 | ft_var_load_mvar( face ); |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 2530 | } |
| 2531 | |
Werner Lemberg | 0aa3616 | 2015-03-08 22:50:37 +0100 | [diff] [blame] | 2532 | /* fill the output array if requested */ |
| 2533 | |
Werner Lemberg | 4441f7b | 2016-12-26 17:08:17 +0100 | [diff] [blame] | 2534 | if ( master ) |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 2535 | { |
| 2536 | FT_UInt n; |
| 2537 | |
| 2538 | |
| 2539 | if ( FT_ALLOC( mmvar, face->blend->mmvar_len ) ) |
| 2540 | goto Exit; |
| 2541 | FT_MEM_COPY( mmvar, face->blend->mmvar, face->blend->mmvar_len ); |
| 2542 | |
Werner Lemberg | f43b309 | 2017-08-05 18:22:17 +0200 | [diff] [blame] | 2543 | axis_flags = |
Werner Lemberg | b19cdc9 | 2017-09-21 11:02:35 +0200 | [diff] [blame] | 2544 | (FT_UShort*)( (char*)mmvar + mmvar_size ); |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 2545 | mmvar->axis = |
Werner Lemberg | b19cdc9 | 2017-09-21 11:02:35 +0200 | [diff] [blame] | 2546 | (FT_Var_Axis*)( (char*)axis_flags + axis_flags_size ); |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 2547 | mmvar->namedstyle = |
Werner Lemberg | b19cdc9 | 2017-09-21 11:02:35 +0200 | [diff] [blame] | 2548 | (FT_Var_Named_Style*)( (char*)mmvar->axis+ axis_size ); |
Werner Lemberg | f43b309 | 2017-08-05 18:22:17 +0200 | [diff] [blame] | 2549 | |
Werner Lemberg | b19cdc9 | 2017-09-21 11:02:35 +0200 | [diff] [blame] | 2550 | next_coords = (FT_Fixed*)( (char*)mmvar->namedstyle + |
| 2551 | namedstyle_size ); |
Werner Lemberg | 0aa3616 | 2015-03-08 22:50:37 +0100 | [diff] [blame] | 2552 | for ( n = 0; n < mmvar->num_namedstyles; n++ ) |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 2553 | { |
| 2554 | mmvar->namedstyle[n].coords = next_coords; |
Werner Lemberg | b19cdc9 | 2017-09-21 11:02:35 +0200 | [diff] [blame] | 2555 | next_coords += num_axes; |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 2556 | } |
| 2557 | |
Werner Lemberg | 0aa3616 | 2015-03-08 22:50:37 +0100 | [diff] [blame] | 2558 | a = mmvar->axis; |
Werner Lemberg | b19cdc9 | 2017-09-21 11:02:35 +0200 | [diff] [blame] | 2559 | next_name = (FT_String*)( (char*)mmvar->namedstyle + |
| 2560 | namedstyle_size + next_coords_size ); |
| 2561 | for ( n = 0; n < num_axes; n++ ) |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 2562 | { |
| 2563 | a->name = next_name; |
| 2564 | |
| 2565 | /* standard PostScript names for some standard apple tags */ |
| 2566 | if ( a->tag == TTAG_wght ) |
Werner Lemberg | 0aa3616 | 2015-03-08 22:50:37 +0100 | [diff] [blame] | 2567 | a->name = (char*)"Weight"; |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 2568 | else if ( a->tag == TTAG_wdth ) |
Werner Lemberg | 0aa3616 | 2015-03-08 22:50:37 +0100 | [diff] [blame] | 2569 | a->name = (char*)"Width"; |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 2570 | else if ( a->tag == TTAG_opsz ) |
Werner Lemberg | 0aa3616 | 2015-03-08 22:50:37 +0100 | [diff] [blame] | 2571 | a->name = (char*)"OpticalSize"; |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 2572 | else if ( a->tag == TTAG_slnt ) |
Werner Lemberg | 0aa3616 | 2015-03-08 22:50:37 +0100 | [diff] [blame] | 2573 | a->name = (char*)"Slant"; |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 2574 | |
| 2575 | next_name += 5; |
Werner Lemberg | 0aa3616 | 2015-03-08 22:50:37 +0100 | [diff] [blame] | 2576 | a++; |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 2577 | } |
| 2578 | |
| 2579 | *master = mmvar; |
| 2580 | } |
| 2581 | |
| 2582 | Exit: |
| 2583 | return error; |
| 2584 | } |
| 2585 | |
| 2586 | |
Werner Lemberg | 5eb0fd5 | 2017-03-12 20:46:56 +0100 | [diff] [blame] | 2587 | static FT_Error |
| 2588 | tt_set_mm_blend( TT_Face face, |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 2589 | FT_UInt num_coords, |
Werner Lemberg | 5eb0fd5 | 2017-03-12 20:46:56 +0100 | [diff] [blame] | 2590 | FT_Fixed* coords, |
| 2591 | FT_Bool set_design_coords ) |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 2592 | { |
Werner Lemberg | e3c9301 | 2013-03-14 11:21:17 +0100 | [diff] [blame] | 2593 | FT_Error error = FT_Err_Ok; |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 2594 | GX_Blend blend; |
| 2595 | FT_MM_Var* mmvar; |
Werner Lemberg | f89c67f | 2017-10-07 13:10:53 +0200 | [diff] [blame] | 2596 | FT_UInt i; |
Werner Lemberg | a9331c0 | 2017-05-27 15:50:25 +0200 | [diff] [blame] | 2597 | |
Werner Lemberg | 8c92f76 | 2017-10-07 12:12:49 +0200 | [diff] [blame] | 2598 | FT_Bool all_design_coords = FALSE; |
Werner Lemberg | a9331c0 | 2017-05-27 15:50:25 +0200 | [diff] [blame] | 2599 | |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 2600 | FT_Memory memory = face->root.memory; |
| 2601 | |
| 2602 | enum |
| 2603 | { |
| 2604 | mcvt_retain, |
| 2605 | mcvt_modify, |
| 2606 | mcvt_load |
| 2607 | |
| 2608 | } manageCvt; |
| 2609 | |
| 2610 | |
| 2611 | face->doblend = FALSE; |
| 2612 | |
Werner Lemberg | 4441f7b | 2016-12-26 17:08:17 +0100 | [diff] [blame] | 2613 | if ( !face->blend ) |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 2614 | { |
Werner Lemberg | 5d664b6 | 2016-12-17 20:47:42 +0100 | [diff] [blame] | 2615 | if ( FT_SET_ERROR( TT_Get_MM_Var( face, NULL ) ) ) |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 2616 | goto Exit; |
| 2617 | } |
| 2618 | |
| 2619 | blend = face->blend; |
| 2620 | mmvar = blend->mmvar; |
| 2621 | |
Werner Lemberg | 10e2bb8 | 2015-03-29 13:32:47 +0200 | [diff] [blame] | 2622 | if ( num_coords > mmvar->num_axis ) |
Werner Lemberg | cdee7d1 | 2015-05-31 11:54:42 +0200 | [diff] [blame] | 2623 | { |
Werner Lemberg | 5eb0fd5 | 2017-03-12 20:46:56 +0100 | [diff] [blame] | 2624 | FT_TRACE2(( "TT_Set_MM_Blend:" |
| 2625 | " only using first %d of %d coordinates\n", |
Werner Lemberg | cdee7d1 | 2015-05-31 11:54:42 +0200 | [diff] [blame] | 2626 | mmvar->num_axis, num_coords )); |
Werner Lemberg | 10e2bb8 | 2015-03-29 13:32:47 +0200 | [diff] [blame] | 2627 | num_coords = mmvar->num_axis; |
Werner Lemberg | cdee7d1 | 2015-05-31 11:54:42 +0200 | [diff] [blame] | 2628 | } |
| 2629 | |
Werner Lemberg | a6adb25 | 2020-12-02 14:15:07 +0100 | [diff] [blame] | 2630 | FT_TRACE5(( "TT_Set_MM_Blend:\n" )); |
| 2631 | FT_TRACE5(( " normalized design coordinates:\n" )); |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 2632 | |
Werner Lemberg | 0aa3616 | 2015-03-08 22:50:37 +0100 | [diff] [blame] | 2633 | for ( i = 0; i < num_coords; i++ ) |
Werner Lemberg | cdee7d1 | 2015-05-31 11:54:42 +0200 | [diff] [blame] | 2634 | { |
Werner Lemberg | f438e06 | 2018-01-27 14:39:15 +0100 | [diff] [blame] | 2635 | FT_TRACE5(( " %.5f\n", coords[i] / 65536.0 )); |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 2636 | if ( coords[i] < -0x00010000L || coords[i] > 0x00010000L ) |
| 2637 | { |
Werner Lemberg | a6adb25 | 2020-12-02 14:15:07 +0100 | [diff] [blame] | 2638 | FT_TRACE1(( "TT_Set_MM_Blend: normalized design coordinate %.5f\n", |
Werner Lemberg | cdee7d1 | 2015-05-31 11:54:42 +0200 | [diff] [blame] | 2639 | coords[i] / 65536.0 )); |
Werner Lemberg | a6adb25 | 2020-12-02 14:15:07 +0100 | [diff] [blame] | 2640 | FT_TRACE1(( " is out of range [-1;1]\n" )); |
Werner Lemberg | 059bc33 | 2013-03-14 10:27:35 +0100 | [diff] [blame] | 2641 | error = FT_THROW( Invalid_Argument ); |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 2642 | goto Exit; |
| 2643 | } |
Werner Lemberg | cdee7d1 | 2015-05-31 11:54:42 +0200 | [diff] [blame] | 2644 | } |
| 2645 | |
| 2646 | FT_TRACE5(( "\n" )); |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 2647 | |
Werner Lemberg | f0cee1a | 2017-02-23 08:23:39 +0100 | [diff] [blame] | 2648 | if ( !face->is_cff2 && !blend->glyphoffsets ) |
Werner Lemberg | 5d664b6 | 2016-12-17 20:47:42 +0100 | [diff] [blame] | 2649 | if ( FT_SET_ERROR( ft_var_load_gvar( face ) ) ) |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 2650 | goto Exit; |
| 2651 | |
Werner Lemberg | 5eb0fd5 | 2017-03-12 20:46:56 +0100 | [diff] [blame] | 2652 | if ( !blend->coords ) |
| 2653 | { |
| 2654 | if ( FT_NEW_ARRAY( blend->coords, mmvar->num_axis ) ) |
| 2655 | goto Exit; |
Werner Lemberg | a9331c0 | 2017-05-27 15:50:25 +0200 | [diff] [blame] | 2656 | |
| 2657 | /* the first time we have to compute all design coordinates */ |
| 2658 | all_design_coords = TRUE; |
Werner Lemberg | 5eb0fd5 | 2017-03-12 20:46:56 +0100 | [diff] [blame] | 2659 | } |
| 2660 | |
Werner Lemberg | 4441f7b | 2016-12-26 17:08:17 +0100 | [diff] [blame] | 2661 | if ( !blend->normalizedcoords ) |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 2662 | { |
Werner Lemberg | 10e2bb8 | 2015-03-29 13:32:47 +0200 | [diff] [blame] | 2663 | if ( FT_NEW_ARRAY( blend->normalizedcoords, mmvar->num_axis ) ) |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 2664 | goto Exit; |
| 2665 | |
| 2666 | manageCvt = mcvt_modify; |
| 2667 | |
| 2668 | /* If we have not set the blend coordinates before this, then the */ |
| 2669 | /* cvt table will still be what we read from the `cvt ' table and */ |
| 2670 | /* we don't need to reload it. We may need to change it though... */ |
| 2671 | } |
| 2672 | else |
| 2673 | { |
Werner Lemberg | 08cd62d | 2017-12-20 22:06:19 +0100 | [diff] [blame] | 2674 | FT_Bool have_diff = 0; |
| 2675 | FT_UInt j; |
| 2676 | FT_Fixed* c; |
| 2677 | FT_Fixed* n; |
| 2678 | |
| 2679 | |
Suzuki, Toshiya (鈴木俊哉) | 6922266 | 2008-10-15 15:22:39 +0000 | [diff] [blame] | 2680 | manageCvt = mcvt_retain; |
Werner Lemberg | 0aa3616 | 2015-03-08 22:50:37 +0100 | [diff] [blame] | 2681 | |
| 2682 | for ( i = 0; i < num_coords; i++ ) |
Suzuki, Toshiya (鈴木俊哉) | 6922266 | 2008-10-15 15:22:39 +0000 | [diff] [blame] | 2683 | { |
| 2684 | if ( blend->normalizedcoords[i] != coords[i] ) |
| 2685 | { |
| 2686 | manageCvt = mcvt_load; |
Werner Lemberg | 08cd62d | 2017-12-20 22:06:19 +0100 | [diff] [blame] | 2687 | have_diff = 1; |
Suzuki, Toshiya (鈴木俊哉) | 6922266 | 2008-10-15 15:22:39 +0000 | [diff] [blame] | 2688 | break; |
| 2689 | } |
| 2690 | } |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 2691 | |
Werner Lemberg | 08cd62d | 2017-12-20 22:06:19 +0100 | [diff] [blame] | 2692 | if ( FT_IS_NAMED_INSTANCE( FT_FACE( face ) ) ) |
| 2693 | { |
Werner Lemberg | 839cb40 | 2018-07-16 05:45:45 +0200 | [diff] [blame] | 2694 | FT_UInt instance_index = (FT_UInt)face->root.face_index >> 16; |
Werner Lemberg | 08cd62d | 2017-12-20 22:06:19 +0100 | [diff] [blame] | 2695 | |
| 2696 | |
| 2697 | c = blend->normalizedcoords + i; |
Werner Lemberg | 839cb40 | 2018-07-16 05:45:45 +0200 | [diff] [blame] | 2698 | n = blend->normalized_stylecoords + |
| 2699 | ( instance_index - 1 ) * mmvar->num_axis + |
| 2700 | i; |
| 2701 | |
Werner Lemberg | 08cd62d | 2017-12-20 22:06:19 +0100 | [diff] [blame] | 2702 | for ( j = i; j < mmvar->num_axis; j++, n++, c++ ) |
| 2703 | if ( *c != *n ) |
| 2704 | have_diff = 1; |
| 2705 | } |
| 2706 | else |
| 2707 | { |
| 2708 | c = blend->normalizedcoords + i; |
| 2709 | for ( j = i; j < mmvar->num_axis; j++, c++ ) |
| 2710 | if ( *c != 0 ) |
| 2711 | have_diff = 1; |
| 2712 | } |
| 2713 | |
| 2714 | /* return value -1 indicates `no change' */ |
| 2715 | if ( !have_diff ) |
Werner Lemberg | c9edca8 | 2018-07-27 10:44:01 +0200 | [diff] [blame] | 2716 | { |
| 2717 | face->doblend = TRUE; |
| 2718 | |
Werner Lemberg | 08cd62d | 2017-12-20 22:06:19 +0100 | [diff] [blame] | 2719 | return -1; |
Werner Lemberg | c9edca8 | 2018-07-27 10:44:01 +0200 | [diff] [blame] | 2720 | } |
Werner Lemberg | 08cd62d | 2017-12-20 22:06:19 +0100 | [diff] [blame] | 2721 | |
Werner Lemberg | 10e2bb8 | 2015-03-29 13:32:47 +0200 | [diff] [blame] | 2722 | for ( ; i < mmvar->num_axis; i++ ) |
| 2723 | { |
| 2724 | if ( blend->normalizedcoords[i] != 0 ) |
| 2725 | { |
| 2726 | manageCvt = mcvt_load; |
| 2727 | break; |
| 2728 | } |
| 2729 | } |
| 2730 | |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 2731 | /* If we don't change the blend coords then we don't need to do */ |
| 2732 | /* anything to the cvt table. It will be correct. Otherwise we */ |
| 2733 | /* no longer have the original cvt (it was modified when we set */ |
| 2734 | /* the blend last time), so we must reload and then modify it. */ |
| 2735 | } |
| 2736 | |
Werner Lemberg | 10e2bb8 | 2015-03-29 13:32:47 +0200 | [diff] [blame] | 2737 | blend->num_axis = mmvar->num_axis; |
Ben Wagner | d3dc2da | 2021-06-30 18:22:29 -0400 | [diff] [blame] | 2738 | if ( coords ) |
| 2739 | FT_MEM_COPY( blend->normalizedcoords, |
| 2740 | coords, |
| 2741 | num_coords * sizeof ( FT_Fixed ) ); |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 2742 | |
Werner Lemberg | 5eb0fd5 | 2017-03-12 20:46:56 +0100 | [diff] [blame] | 2743 | if ( set_design_coords ) |
| 2744 | ft_var_to_design( face, |
Werner Lemberg | a9331c0 | 2017-05-27 15:50:25 +0200 | [diff] [blame] | 2745 | all_design_coords ? blend->num_axis : num_coords, |
Werner Lemberg | 5eb0fd5 | 2017-03-12 20:46:56 +0100 | [diff] [blame] | 2746 | blend->normalizedcoords, |
| 2747 | blend->coords ); |
| 2748 | |
Werner Lemberg | 55d6abe | 2018-01-03 19:01:15 +0100 | [diff] [blame] | 2749 | face->doblend = TRUE; |
| 2750 | |
Werner Lemberg | 4441f7b | 2016-12-26 17:08:17 +0100 | [diff] [blame] | 2751 | if ( face->cvt ) |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 2752 | { |
| 2753 | switch ( manageCvt ) |
| 2754 | { |
| 2755 | case mcvt_load: |
| 2756 | /* The cvt table has been loaded already; every time we change the */ |
| 2757 | /* blend we may need to reload and remodify the cvt table. */ |
| 2758 | FT_FREE( face->cvt ); |
| 2759 | face->cvt = NULL; |
| 2760 | |
Werner Lemberg | 6689a00 | 2014-11-25 08:53:09 +0100 | [diff] [blame] | 2761 | error = tt_face_load_cvt( face, face->root.stream ); |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 2762 | break; |
| 2763 | |
| 2764 | case mcvt_modify: |
| 2765 | /* The original cvt table is in memory. All we need to do is */ |
| 2766 | /* apply the `cvar' table (if any). */ |
Werner Lemberg | 6689a00 | 2014-11-25 08:53:09 +0100 | [diff] [blame] | 2767 | error = tt_face_vary_cvt( face, face->root.stream ); |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 2768 | break; |
| 2769 | |
| 2770 | case mcvt_retain: |
| 2771 | /* The cvt table is correct for this set of coordinates. */ |
| 2772 | break; |
| 2773 | } |
| 2774 | } |
| 2775 | |
Werner Lemberg | 34010f7 | 2017-03-14 21:50:22 +0100 | [diff] [blame] | 2776 | /* enforce recomputation of the PostScript name; */ |
| 2777 | FT_FREE( face->postscript_name ); |
| 2778 | face->postscript_name = NULL; |
| 2779 | |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 2780 | Exit: |
| 2781 | return error; |
| 2782 | } |
| 2783 | |
| 2784 | |
Werner Lemberg | 9ac9060 | 2018-06-03 09:01:17 +0200 | [diff] [blame] | 2785 | /************************************************************************** |
| 2786 | * |
| 2787 | * @Function: |
| 2788 | * TT_Set_MM_Blend |
| 2789 | * |
| 2790 | * @Description: |
| 2791 | * Set the blend (normalized) coordinates for this instance of the |
| 2792 | * font. Check that the `gvar' table is reasonable and does some |
| 2793 | * initial preparation. |
| 2794 | * |
| 2795 | * @InOut: |
| 2796 | * face :: |
| 2797 | * The font. |
| 2798 | * Initialize the blend structure with `gvar' data. |
| 2799 | * |
| 2800 | * @Input: |
| 2801 | * num_coords :: |
| 2802 | * The number of available coordinates. If it is |
| 2803 | * larger than the number of axes, ignore the excess |
| 2804 | * values. If it is smaller than the number of axes, |
| 2805 | * use the default value (0) for the remaining axes. |
| 2806 | * |
| 2807 | * coords :: |
| 2808 | * An array of `num_coords', each between [-1,1]. |
| 2809 | * |
| 2810 | * @Return: |
| 2811 | * FreeType error code. 0 means success. |
| 2812 | */ |
Werner Lemberg | 5eb0fd5 | 2017-03-12 20:46:56 +0100 | [diff] [blame] | 2813 | FT_LOCAL_DEF( FT_Error ) |
| 2814 | TT_Set_MM_Blend( TT_Face face, |
| 2815 | FT_UInt num_coords, |
| 2816 | FT_Fixed* coords ) |
| 2817 | { |
Werner Lemberg | 8c92f76 | 2017-10-07 12:12:49 +0200 | [diff] [blame] | 2818 | FT_Error error; |
| 2819 | |
| 2820 | |
| 2821 | error = tt_set_mm_blend( face, num_coords, coords, 1 ); |
| 2822 | if ( error ) |
| 2823 | return error; |
| 2824 | |
| 2825 | if ( num_coords ) |
| 2826 | face->root.face_flags |= FT_FACE_FLAG_VARIATION; |
| 2827 | else |
| 2828 | face->root.face_flags &= ~FT_FACE_FLAG_VARIATION; |
| 2829 | |
| 2830 | return FT_Err_Ok; |
Werner Lemberg | 5eb0fd5 | 2017-03-12 20:46:56 +0100 | [diff] [blame] | 2831 | } |
| 2832 | |
| 2833 | |
Werner Lemberg | 9ac9060 | 2018-06-03 09:01:17 +0200 | [diff] [blame] | 2834 | /************************************************************************** |
| 2835 | * |
| 2836 | * @Function: |
| 2837 | * TT_Get_MM_Blend |
| 2838 | * |
| 2839 | * @Description: |
| 2840 | * Get the blend (normalized) coordinates for this instance of the |
| 2841 | * font. |
| 2842 | * |
| 2843 | * @InOut: |
| 2844 | * face :: |
| 2845 | * The font. |
| 2846 | * Initialize the blend structure with `gvar' data. |
| 2847 | * |
| 2848 | * @Input: |
| 2849 | * num_coords :: |
| 2850 | * The number of available coordinates. If it is |
| 2851 | * larger than the number of axes, set the excess |
| 2852 | * values to 0. |
| 2853 | * |
| 2854 | * coords :: |
| 2855 | * An array of `num_coords', each between [-1,1]. |
| 2856 | * |
| 2857 | * @Return: |
| 2858 | * FreeType error code. 0 means success. |
| 2859 | */ |
Werner Lemberg | 9c45ac3 | 2016-10-26 16:00:00 +0200 | [diff] [blame] | 2860 | FT_LOCAL_DEF( FT_Error ) |
| 2861 | TT_Get_MM_Blend( TT_Face face, |
| 2862 | FT_UInt num_coords, |
| 2863 | FT_Fixed* coords ) |
| 2864 | { |
| 2865 | FT_Error error = FT_Err_Ok; |
| 2866 | GX_Blend blend; |
| 2867 | FT_UInt i, nc; |
| 2868 | |
| 2869 | |
Werner Lemberg | 4441f7b | 2016-12-26 17:08:17 +0100 | [diff] [blame] | 2870 | if ( !face->blend ) |
Werner Lemberg | 9c45ac3 | 2016-10-26 16:00:00 +0200 | [diff] [blame] | 2871 | { |
Werner Lemberg | 5d664b6 | 2016-12-17 20:47:42 +0100 | [diff] [blame] | 2872 | if ( FT_SET_ERROR( TT_Get_MM_Var( face, NULL ) ) ) |
Werner Lemberg | 9c45ac3 | 2016-10-26 16:00:00 +0200 | [diff] [blame] | 2873 | return error; |
| 2874 | } |
| 2875 | |
| 2876 | blend = face->blend; |
| 2877 | |
Werner Lemberg | a9331c0 | 2017-05-27 15:50:25 +0200 | [diff] [blame] | 2878 | if ( !blend->coords ) |
| 2879 | { |
| 2880 | /* select default instance coordinates */ |
| 2881 | /* if no instance is selected yet */ |
| 2882 | if ( FT_SET_ERROR( tt_set_mm_blend( face, 0, NULL, 1 ) ) ) |
| 2883 | return error; |
| 2884 | } |
| 2885 | |
Werner Lemberg | 9c45ac3 | 2016-10-26 16:00:00 +0200 | [diff] [blame] | 2886 | nc = num_coords; |
| 2887 | if ( num_coords > blend->num_axis ) |
| 2888 | { |
Werner Lemberg | 5eb0fd5 | 2017-03-12 20:46:56 +0100 | [diff] [blame] | 2889 | FT_TRACE2(( "TT_Get_MM_Blend:" |
| 2890 | " only using first %d of %d coordinates\n", |
Werner Lemberg | 9c45ac3 | 2016-10-26 16:00:00 +0200 | [diff] [blame] | 2891 | blend->num_axis, num_coords )); |
| 2892 | nc = blend->num_axis; |
| 2893 | } |
| 2894 | |
Werner Lemberg | 7591bf1 | 2016-12-29 21:39:06 +0100 | [diff] [blame] | 2895 | if ( face->doblend ) |
| 2896 | { |
| 2897 | for ( i = 0; i < nc; i++ ) |
| 2898 | coords[i] = blend->normalizedcoords[i]; |
| 2899 | } |
| 2900 | else |
| 2901 | { |
| 2902 | for ( i = 0; i < nc; i++ ) |
| 2903 | coords[i] = 0; |
| 2904 | } |
| 2905 | |
Werner Lemberg | 9c45ac3 | 2016-10-26 16:00:00 +0200 | [diff] [blame] | 2906 | for ( ; i < num_coords; i++ ) |
| 2907 | coords[i] = 0; |
| 2908 | |
| 2909 | return FT_Err_Ok; |
| 2910 | } |
| 2911 | |
| 2912 | |
Werner Lemberg | 9ac9060 | 2018-06-03 09:01:17 +0200 | [diff] [blame] | 2913 | /************************************************************************** |
| 2914 | * |
| 2915 | * @Function: |
| 2916 | * TT_Set_Var_Design |
| 2917 | * |
| 2918 | * @Description: |
| 2919 | * Set the coordinates for the instance, measured in the user |
| 2920 | * coordinate system. Parse the `avar' table (if present) to convert |
| 2921 | * from user to normalized coordinates. |
| 2922 | * |
| 2923 | * @InOut: |
| 2924 | * face :: |
| 2925 | * The font face. |
| 2926 | * Initialize the blend struct with `gvar' data. |
| 2927 | * |
| 2928 | * @Input: |
| 2929 | * num_coords :: |
| 2930 | * The number of available coordinates. If it is |
| 2931 | * larger than the number of axes, ignore the excess |
| 2932 | * values. If it is smaller than the number of axes, |
| 2933 | * use the default values for the remaining axes. |
| 2934 | * |
| 2935 | * coords :: |
| 2936 | * A coordinate array with `num_coords' elements. |
| 2937 | * |
| 2938 | * @Return: |
| 2939 | * FreeType error code. 0 means success. |
| 2940 | */ |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 2941 | FT_LOCAL_DEF( FT_Error ) |
| 2942 | TT_Set_Var_Design( TT_Face face, |
| 2943 | FT_UInt num_coords, |
| 2944 | FT_Fixed* coords ) |
| 2945 | { |
Werner Lemberg | 5eb0fd5 | 2017-03-12 20:46:56 +0100 | [diff] [blame] | 2946 | FT_Error error = FT_Err_Ok; |
| 2947 | GX_Blend blend; |
| 2948 | FT_MM_Var* mmvar; |
| 2949 | FT_UInt i; |
| 2950 | FT_Memory memory = face->root.memory; |
| 2951 | |
Werner Lemberg | f89c67f | 2017-10-07 13:10:53 +0200 | [diff] [blame] | 2952 | FT_Fixed* c; |
Werner Lemberg | 08cd62d | 2017-12-20 22:06:19 +0100 | [diff] [blame] | 2953 | FT_Fixed* n; |
Werner Lemberg | 4717696 | 2017-03-02 21:42:14 +0100 | [diff] [blame] | 2954 | FT_Fixed* normalized = NULL; |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 2955 | |
Werner Lemberg | 08cd62d | 2017-12-20 22:06:19 +0100 | [diff] [blame] | 2956 | FT_Bool have_diff = 0; |
| 2957 | |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 2958 | |
Werner Lemberg | 4441f7b | 2016-12-26 17:08:17 +0100 | [diff] [blame] | 2959 | if ( !face->blend ) |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 2960 | { |
Werner Lemberg | 5d664b6 | 2016-12-17 20:47:42 +0100 | [diff] [blame] | 2961 | if ( FT_SET_ERROR( TT_Get_MM_Var( face, NULL ) ) ) |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 2962 | goto Exit; |
| 2963 | } |
| 2964 | |
Werner Lemberg | 5eb0fd5 | 2017-03-12 20:46:56 +0100 | [diff] [blame] | 2965 | blend = face->blend; |
| 2966 | mmvar = blend->mmvar; |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 2967 | |
Werner Lemberg | 5eb0fd5 | 2017-03-12 20:46:56 +0100 | [diff] [blame] | 2968 | if ( num_coords > mmvar->num_axis ) |
| 2969 | { |
| 2970 | FT_TRACE2(( "TT_Set_Var_Design:" |
| 2971 | " only using first %d of %d coordinates\n", |
| 2972 | mmvar->num_axis, num_coords )); |
| 2973 | num_coords = mmvar->num_axis; |
| 2974 | } |
| 2975 | |
| 2976 | if ( !blend->coords ) |
| 2977 | { |
| 2978 | if ( FT_NEW_ARRAY( blend->coords, mmvar->num_axis ) ) |
| 2979 | goto Exit; |
| 2980 | } |
| 2981 | |
Werner Lemberg | 08cd62d | 2017-12-20 22:06:19 +0100 | [diff] [blame] | 2982 | c = blend->coords; |
| 2983 | n = coords; |
| 2984 | for ( i = 0; i < num_coords; i++, n++, c++ ) |
| 2985 | { |
| 2986 | if ( *c != *n ) |
| 2987 | { |
| 2988 | *c = *n; |
| 2989 | have_diff = 1; |
| 2990 | } |
| 2991 | } |
Werner Lemberg | f89c67f | 2017-10-07 13:10:53 +0200 | [diff] [blame] | 2992 | |
| 2993 | if ( FT_IS_NAMED_INSTANCE( FT_FACE( face ) ) ) |
| 2994 | { |
| 2995 | FT_UInt instance_index; |
| 2996 | FT_Var_Named_Style* named_style; |
Werner Lemberg | f89c67f | 2017-10-07 13:10:53 +0200 | [diff] [blame] | 2997 | |
| 2998 | |
| 2999 | instance_index = (FT_UInt)face->root.face_index >> 16; |
| 3000 | named_style = mmvar->namedstyle + instance_index - 1; |
| 3001 | |
| 3002 | n = named_style->coords + num_coords; |
Werner Lemberg | 08cd62d | 2017-12-20 22:06:19 +0100 | [diff] [blame] | 3003 | for ( ; i < mmvar->num_axis; i++, n++, c++ ) |
| 3004 | { |
| 3005 | if ( *c != *n ) |
| 3006 | { |
| 3007 | *c = *n; |
| 3008 | have_diff = 1; |
| 3009 | } |
| 3010 | } |
Werner Lemberg | f89c67f | 2017-10-07 13:10:53 +0200 | [diff] [blame] | 3011 | } |
| 3012 | else |
| 3013 | { |
| 3014 | FT_Var_Axis* a; |
| 3015 | |
| 3016 | |
| 3017 | a = mmvar->axis + num_coords; |
Werner Lemberg | 08cd62d | 2017-12-20 22:06:19 +0100 | [diff] [blame] | 3018 | for ( ; i < mmvar->num_axis; i++, a++, c++ ) |
| 3019 | { |
| 3020 | if ( *c != a->def ) |
| 3021 | { |
| 3022 | *c = a->def; |
| 3023 | have_diff = 1; |
| 3024 | } |
| 3025 | } |
Werner Lemberg | f89c67f | 2017-10-07 13:10:53 +0200 | [diff] [blame] | 3026 | } |
Werner Lemberg | 5eb0fd5 | 2017-03-12 20:46:56 +0100 | [diff] [blame] | 3027 | |
Werner Lemberg | 68dddcd | 2018-01-27 23:59:30 +0100 | [diff] [blame] | 3028 | /* return value -1 indicates `no change'; */ |
| 3029 | /* we can exit early if `normalizedcoords' is already computed */ |
| 3030 | if ( blend->normalizedcoords && !have_diff ) |
Werner Lemberg | 08cd62d | 2017-12-20 22:06:19 +0100 | [diff] [blame] | 3031 | return -1; |
| 3032 | |
Werner Lemberg | 5eb0fd5 | 2017-03-12 20:46:56 +0100 | [diff] [blame] | 3033 | if ( FT_NEW_ARRAY( normalized, mmvar->num_axis ) ) |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 3034 | goto Exit; |
| 3035 | |
Werner Lemberg | 4a62922 | 2017-03-12 10:19:53 +0100 | [diff] [blame] | 3036 | if ( !face->blend->avar_loaded ) |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 3037 | ft_var_load_avar( face ); |
| 3038 | |
Werner Lemberg | a6adb25 | 2020-12-02 14:15:07 +0100 | [diff] [blame] | 3039 | FT_TRACE5(( "TT_Set_Var_Design:\n" )); |
| 3040 | FT_TRACE5(( " normalized design coordinates:\n" )); |
Werner Lemberg | 5f2a72c | 2017-06-10 11:29:24 +0200 | [diff] [blame] | 3041 | ft_var_to_normalized( face, num_coords, blend->coords, normalized ); |
Werner Lemberg | cdee7d1 | 2015-05-31 11:54:42 +0200 | [diff] [blame] | 3042 | |
Werner Lemberg | 5eb0fd5 | 2017-03-12 20:46:56 +0100 | [diff] [blame] | 3043 | error = tt_set_mm_blend( face, mmvar->num_axis, normalized, 0 ); |
Werner Lemberg | 8c92f76 | 2017-10-07 12:12:49 +0200 | [diff] [blame] | 3044 | if ( error ) |
| 3045 | goto Exit; |
| 3046 | |
| 3047 | if ( num_coords ) |
| 3048 | face->root.face_flags |= FT_FACE_FLAG_VARIATION; |
| 3049 | else |
| 3050 | face->root.face_flags &= ~FT_FACE_FLAG_VARIATION; |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 3051 | |
| 3052 | Exit: |
| 3053 | FT_FREE( normalized ); |
| 3054 | return error; |
| 3055 | } |
| 3056 | |
| 3057 | |
Werner Lemberg | 9ac9060 | 2018-06-03 09:01:17 +0200 | [diff] [blame] | 3058 | /************************************************************************** |
| 3059 | * |
| 3060 | * @Function: |
| 3061 | * TT_Get_Var_Design |
| 3062 | * |
| 3063 | * @Description: |
| 3064 | * Get the design coordinates of the currently selected interpolated |
| 3065 | * font. |
| 3066 | * |
| 3067 | * @Input: |
| 3068 | * face :: |
| 3069 | * A handle to the source face. |
| 3070 | * |
| 3071 | * num_coords :: |
| 3072 | * The number of design coordinates to retrieve. If it |
| 3073 | * is larger than the number of axes, set the excess |
| 3074 | * values to~0. |
| 3075 | * |
| 3076 | * @Output: |
| 3077 | * coords :: |
| 3078 | * The design coordinates array. |
| 3079 | * |
| 3080 | * @Return: |
| 3081 | * FreeType error code. 0~means success. |
| 3082 | */ |
Dave Arnold | bcae657 | 2016-12-05 22:08:15 +0100 | [diff] [blame] | 3083 | FT_LOCAL_DEF( FT_Error ) |
| 3084 | TT_Get_Var_Design( TT_Face face, |
| 3085 | FT_UInt num_coords, |
| 3086 | FT_Fixed* coords ) |
| 3087 | { |
Werner Lemberg | e5e3556 | 2016-12-27 06:49:37 +0100 | [diff] [blame] | 3088 | FT_Error error = FT_Err_Ok; |
Werner Lemberg | 5eb0fd5 | 2017-03-12 20:46:56 +0100 | [diff] [blame] | 3089 | GX_Blend blend; |
| 3090 | FT_UInt i, nc; |
Dave Arnold | bcae657 | 2016-12-05 22:08:15 +0100 | [diff] [blame] | 3091 | |
Werner Lemberg | e5e3556 | 2016-12-27 06:49:37 +0100 | [diff] [blame] | 3092 | |
| 3093 | if ( !face->blend ) |
| 3094 | { |
| 3095 | if ( FT_SET_ERROR( TT_Get_MM_Var( face, NULL ) ) ) |
| 3096 | return error; |
| 3097 | } |
| 3098 | |
Werner Lemberg | 5eb0fd5 | 2017-03-12 20:46:56 +0100 | [diff] [blame] | 3099 | blend = face->blend; |
Werner Lemberg | e5e3556 | 2016-12-27 06:49:37 +0100 | [diff] [blame] | 3100 | |
Werner Lemberg | a9331c0 | 2017-05-27 15:50:25 +0200 | [diff] [blame] | 3101 | if ( !blend->coords ) |
| 3102 | { |
| 3103 | /* select default instance coordinates */ |
| 3104 | /* if no instance is selected yet */ |
| 3105 | if ( FT_SET_ERROR( tt_set_mm_blend( face, 0, NULL, 1 ) ) ) |
| 3106 | return error; |
| 3107 | } |
| 3108 | |
Werner Lemberg | 5eb0fd5 | 2017-03-12 20:46:56 +0100 | [diff] [blame] | 3109 | nc = num_coords; |
| 3110 | if ( num_coords > blend->num_axis ) |
| 3111 | { |
| 3112 | FT_TRACE2(( "TT_Get_Var_Design:" |
| 3113 | " only using first %d of %d coordinates\n", |
| 3114 | blend->num_axis, num_coords )); |
| 3115 | nc = blend->num_axis; |
| 3116 | } |
| 3117 | |
| 3118 | if ( face->doblend ) |
| 3119 | { |
| 3120 | for ( i = 0; i < nc; i++ ) |
| 3121 | coords[i] = blend->coords[i]; |
| 3122 | } |
| 3123 | else |
| 3124 | { |
| 3125 | for ( i = 0; i < nc; i++ ) |
| 3126 | coords[i] = 0; |
| 3127 | } |
| 3128 | |
| 3129 | for ( ; i < num_coords; i++ ) |
| 3130 | coords[i] = 0; |
Werner Lemberg | e5e3556 | 2016-12-27 06:49:37 +0100 | [diff] [blame] | 3131 | |
| 3132 | return FT_Err_Ok; |
Dave Arnold | bcae657 | 2016-12-05 22:08:15 +0100 | [diff] [blame] | 3133 | } |
| 3134 | |
| 3135 | |
Werner Lemberg | 9ac9060 | 2018-06-03 09:01:17 +0200 | [diff] [blame] | 3136 | /************************************************************************** |
| 3137 | * |
| 3138 | * @Function: |
| 3139 | * TT_Set_Named_Instance |
| 3140 | * |
| 3141 | * @Description: |
| 3142 | * Set the given named instance, also resetting any further |
| 3143 | * variation. |
| 3144 | * |
| 3145 | * @Input: |
| 3146 | * face :: |
| 3147 | * A handle to the source face. |
| 3148 | * |
| 3149 | * instance_index :: |
| 3150 | * The instance index, starting with value 1. |
| 3151 | * Value 0 indicates to not use an instance. |
| 3152 | * |
| 3153 | * @Return: |
| 3154 | * FreeType error code. 0~means success. |
| 3155 | */ |
Werner Lemberg | e9ef538 | 2017-10-07 12:57:11 +0200 | [diff] [blame] | 3156 | FT_LOCAL_DEF( FT_Error ) |
| 3157 | TT_Set_Named_Instance( TT_Face face, |
| 3158 | FT_UInt instance_index ) |
| 3159 | { |
Werner Lemberg | 5941565 | 2019-08-27 14:07:14 +0200 | [diff] [blame] | 3160 | FT_Error error; |
Werner Lemberg | e9ef538 | 2017-10-07 12:57:11 +0200 | [diff] [blame] | 3161 | GX_Blend blend; |
| 3162 | FT_MM_Var* mmvar; |
| 3163 | |
| 3164 | FT_UInt num_instances; |
| 3165 | |
| 3166 | |
| 3167 | if ( !face->blend ) |
| 3168 | { |
| 3169 | if ( FT_SET_ERROR( TT_Get_MM_Var( face, NULL ) ) ) |
| 3170 | goto Exit; |
| 3171 | } |
| 3172 | |
| 3173 | blend = face->blend; |
| 3174 | mmvar = blend->mmvar; |
| 3175 | |
| 3176 | num_instances = (FT_UInt)face->root.style_flags >> 16; |
| 3177 | |
| 3178 | /* `instance_index' starts with value 1, thus `>' */ |
| 3179 | if ( instance_index > num_instances ) |
Werner Lemberg | 5941565 | 2019-08-27 14:07:14 +0200 | [diff] [blame] | 3180 | { |
| 3181 | error = FT_ERR( Invalid_Argument ); |
Werner Lemberg | e9ef538 | 2017-10-07 12:57:11 +0200 | [diff] [blame] | 3182 | goto Exit; |
Werner Lemberg | 5941565 | 2019-08-27 14:07:14 +0200 | [diff] [blame] | 3183 | } |
Werner Lemberg | e9ef538 | 2017-10-07 12:57:11 +0200 | [diff] [blame] | 3184 | |
Werner Lemberg | 7b84104 | 2019-05-04 08:13:22 +0200 | [diff] [blame] | 3185 | if ( instance_index > 0 ) |
Werner Lemberg | e9ef538 | 2017-10-07 12:57:11 +0200 | [diff] [blame] | 3186 | { |
| 3187 | FT_Memory memory = face->root.memory; |
| 3188 | SFNT_Service sfnt = (SFNT_Service)face->sfnt; |
| 3189 | |
| 3190 | FT_Var_Named_Style* named_style; |
| 3191 | FT_String* style_name; |
| 3192 | |
| 3193 | |
| 3194 | named_style = mmvar->namedstyle + instance_index - 1; |
| 3195 | |
| 3196 | error = sfnt->get_name( face, |
| 3197 | (FT_UShort)named_style->strid, |
| 3198 | &style_name ); |
| 3199 | if ( error ) |
| 3200 | goto Exit; |
| 3201 | |
| 3202 | /* set (or replace) style name */ |
| 3203 | FT_FREE( face->root.style_name ); |
| 3204 | face->root.style_name = style_name; |
| 3205 | |
| 3206 | /* finally, select the named instance */ |
| 3207 | error = TT_Set_Var_Design( face, |
| 3208 | mmvar->num_axis, |
| 3209 | named_style->coords ); |
| 3210 | if ( error ) |
Werner Lemberg | af40043 | 2019-04-22 07:41:35 +0200 | [diff] [blame] | 3211 | { |
| 3212 | /* internal error code -1 means `no change' */ |
| 3213 | if ( error == -1 ) |
| 3214 | error = FT_Err_Ok; |
Werner Lemberg | e9ef538 | 2017-10-07 12:57:11 +0200 | [diff] [blame] | 3215 | goto Exit; |
Werner Lemberg | af40043 | 2019-04-22 07:41:35 +0200 | [diff] [blame] | 3216 | } |
Werner Lemberg | e9ef538 | 2017-10-07 12:57:11 +0200 | [diff] [blame] | 3217 | } |
| 3218 | else |
| 3219 | error = TT_Set_Var_Design( face, 0, NULL ); |
| 3220 | |
| 3221 | face->root.face_index = ( instance_index << 16 ) | |
| 3222 | ( face->root.face_index & 0xFFFFL ); |
| 3223 | face->root.face_flags &= ~FT_FACE_FLAG_VARIATION; |
| 3224 | |
| 3225 | Exit: |
| 3226 | return error; |
| 3227 | } |
| 3228 | |
| 3229 | |
| 3230 | /*************************************************************************/ |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 3231 | /*************************************************************************/ |
| 3232 | /***** *****/ |
| 3233 | /***** GX VAR PARSING ROUTINES *****/ |
| 3234 | /***** *****/ |
| 3235 | /*************************************************************************/ |
| 3236 | /*************************************************************************/ |
| 3237 | |
| 3238 | |
Jany Belluz | 23d1d8a | 2021-11-04 08:55:39 +0000 | [diff] [blame] | 3239 | #ifdef TT_CONFIG_OPTION_BYTECODE_INTERPRETER |
Werner Lemberg | d1c2000 | 2021-08-28 07:29:05 +0200 | [diff] [blame] | 3240 | |
Werner Lemberg | b052270 | 2019-05-16 12:52:57 +0200 | [diff] [blame] | 3241 | static FT_Error |
| 3242 | tt_cvt_ready_iterator( FT_ListNode node, |
| 3243 | void* user ) |
| 3244 | { |
| 3245 | TT_Size size = (TT_Size)node->data; |
| 3246 | |
| 3247 | FT_UNUSED( user ); |
| 3248 | |
| 3249 | |
| 3250 | size->cvt_ready = -1; |
| 3251 | |
| 3252 | return FT_Err_Ok; |
| 3253 | } |
| 3254 | |
Werner Lemberg | d1c2000 | 2021-08-28 07:29:05 +0200 | [diff] [blame] | 3255 | #endif /* TT_CONFIG_OPTION_BYTECODE_INTERPRETER */ |
| 3256 | |
| 3257 | |
Werner Lemberg | b052270 | 2019-05-16 12:52:57 +0200 | [diff] [blame] | 3258 | |
Werner Lemberg | 9ac9060 | 2018-06-03 09:01:17 +0200 | [diff] [blame] | 3259 | /************************************************************************** |
| 3260 | * |
| 3261 | * @Function: |
| 3262 | * tt_face_vary_cvt |
| 3263 | * |
| 3264 | * @Description: |
| 3265 | * Modify the loaded cvt table according to the `cvar' table and the |
| 3266 | * font's blend. |
| 3267 | * |
| 3268 | * @InOut: |
| 3269 | * face :: |
| 3270 | * A handle to the target face object. |
| 3271 | * |
| 3272 | * @Input: |
| 3273 | * stream :: |
| 3274 | * A handle to the input stream. |
| 3275 | * |
| 3276 | * @Return: |
| 3277 | * FreeType error code. 0 means success. |
| 3278 | * |
| 3279 | * Most errors are ignored. It is perfectly valid not to have a |
| 3280 | * `cvar' table even if there is a `gvar' and `fvar' table. |
| 3281 | */ |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 3282 | FT_LOCAL_DEF( FT_Error ) |
| 3283 | tt_face_vary_cvt( TT_Face face, |
| 3284 | FT_Stream stream ) |
| 3285 | { |
Jany Belluz | 23d1d8a | 2021-11-04 08:55:39 +0000 | [diff] [blame] | 3286 | #ifdef TT_CONFIG_OPTION_BYTECODE_INTERPRETER |
Werner Lemberg | d1c2000 | 2021-08-28 07:29:05 +0200 | [diff] [blame] | 3287 | |
Werner Lemberg | 589d1f0 | 2018-06-25 18:38:04 +0200 | [diff] [blame] | 3288 | FT_Error error; |
| 3289 | FT_Memory memory = stream->memory; |
| 3290 | |
Werner Lemberg | b052270 | 2019-05-16 12:52:57 +0200 | [diff] [blame] | 3291 | FT_Face root = &face->root; |
| 3292 | |
Werner Lemberg | 589d1f0 | 2018-06-25 18:38:04 +0200 | [diff] [blame] | 3293 | FT_ULong table_start; |
| 3294 | FT_ULong table_len; |
| 3295 | |
| 3296 | FT_UInt tupleCount; |
| 3297 | FT_ULong offsetToData; |
| 3298 | |
| 3299 | FT_ULong here; |
| 3300 | FT_UInt i, j; |
| 3301 | |
| 3302 | FT_Fixed* tuple_coords = NULL; |
| 3303 | FT_Fixed* im_start_coords = NULL; |
| 3304 | FT_Fixed* im_end_coords = NULL; |
| 3305 | |
| 3306 | GX_Blend blend = face->blend; |
| 3307 | |
| 3308 | FT_UInt point_count; |
| 3309 | FT_UInt spoint_count = 0; |
| 3310 | |
Werner Lemberg | 337e49c | 2017-12-04 12:36:07 +0100 | [diff] [blame] | 3311 | FT_UShort* sharedpoints = NULL; |
| 3312 | FT_UShort* localpoints = NULL; |
| 3313 | FT_UShort* points; |
Werner Lemberg | a632fb5 | 2018-06-24 15:22:10 +0200 | [diff] [blame] | 3314 | |
Werner Lemberg | 589d1f0 | 2018-06-25 18:38:04 +0200 | [diff] [blame] | 3315 | FT_Fixed* deltas = NULL; |
| 3316 | FT_Fixed* cvt_deltas = NULL; |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 3317 | |
| 3318 | |
| 3319 | FT_TRACE2(( "CVAR " )); |
| 3320 | |
Werner Lemberg | 4441f7b | 2016-12-26 17:08:17 +0100 | [diff] [blame] | 3321 | if ( !blend ) |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 3322 | { |
Werner Lemberg | a6adb25 | 2020-12-02 14:15:07 +0100 | [diff] [blame] | 3323 | FT_TRACE2(( "\n" )); |
| 3324 | FT_TRACE2(( "tt_face_vary_cvt: no blend specified\n" )); |
Werner Lemberg | e3c9301 | 2013-03-14 11:21:17 +0100 | [diff] [blame] | 3325 | error = FT_Err_Ok; |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 3326 | goto Exit; |
| 3327 | } |
| 3328 | |
Werner Lemberg | 4441f7b | 2016-12-26 17:08:17 +0100 | [diff] [blame] | 3329 | if ( !face->cvt ) |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 3330 | { |
Werner Lemberg | a6adb25 | 2020-12-02 14:15:07 +0100 | [diff] [blame] | 3331 | FT_TRACE2(( "\n" )); |
| 3332 | FT_TRACE2(( "tt_face_vary_cvt: no `cvt ' table\n" )); |
Werner Lemberg | e3c9301 | 2013-03-14 11:21:17 +0100 | [diff] [blame] | 3333 | error = FT_Err_Ok; |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 3334 | goto Exit; |
| 3335 | } |
| 3336 | |
| 3337 | error = face->goto_table( face, TTAG_cvar, stream, &table_len ); |
| 3338 | if ( error ) |
| 3339 | { |
Werner Lemberg | 858abbe | 2009-06-26 06:15:41 +0200 | [diff] [blame] | 3340 | FT_TRACE2(( "is missing\n" )); |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 3341 | |
Werner Lemberg | e3c9301 | 2013-03-14 11:21:17 +0100 | [diff] [blame] | 3342 | error = FT_Err_Ok; |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 3343 | goto Exit; |
| 3344 | } |
| 3345 | |
| 3346 | if ( FT_FRAME_ENTER( table_len ) ) |
| 3347 | { |
Werner Lemberg | e3c9301 | 2013-03-14 11:21:17 +0100 | [diff] [blame] | 3348 | error = FT_Err_Ok; |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 3349 | goto Exit; |
| 3350 | } |
| 3351 | |
| 3352 | table_start = FT_Stream_FTell( stream ); |
| 3353 | if ( FT_GET_LONG() != 0x00010000L ) |
| 3354 | { |
Werner Lemberg | 858abbe | 2009-06-26 06:15:41 +0200 | [diff] [blame] | 3355 | FT_TRACE2(( "bad table version\n" )); |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 3356 | |
Werner Lemberg | e3c9301 | 2013-03-14 11:21:17 +0100 | [diff] [blame] | 3357 | error = FT_Err_Ok; |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 3358 | goto FExit; |
| 3359 | } |
| 3360 | |
Werner Lemberg | cdee7d1 | 2015-05-31 11:54:42 +0200 | [diff] [blame] | 3361 | FT_TRACE2(( "loaded\n" )); |
| 3362 | |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 3363 | if ( FT_NEW_ARRAY( tuple_coords, blend->num_axis ) || |
| 3364 | FT_NEW_ARRAY( im_start_coords, blend->num_axis ) || |
| 3365 | FT_NEW_ARRAY( im_end_coords, blend->num_axis ) ) |
| 3366 | goto FExit; |
| 3367 | |
| 3368 | tupleCount = FT_GET_USHORT(); |
Werner Lemberg | da34673 | 2015-10-10 10:21:27 +0200 | [diff] [blame] | 3369 | offsetToData = FT_GET_USHORT(); |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 3370 | |
Werner Lemberg | da34673 | 2015-10-10 10:21:27 +0200 | [diff] [blame] | 3371 | /* rough sanity test */ |
Werner Lemberg | df2cf43 | 2016-12-16 11:38:20 +0100 | [diff] [blame] | 3372 | if ( offsetToData + ( tupleCount & GX_TC_TUPLE_COUNT_MASK ) * 4 > |
| 3373 | table_len ) |
Werner Lemberg | da34673 | 2015-10-10 10:21:27 +0200 | [diff] [blame] | 3374 | { |
| 3375 | FT_TRACE2(( "tt_face_vary_cvt:" |
| 3376 | " invalid CVT variation array header\n" )); |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 3377 | |
Werner Lemberg | da34673 | 2015-10-10 10:21:27 +0200 | [diff] [blame] | 3378 | error = FT_THROW( Invalid_Table ); |
| 3379 | goto FExit; |
| 3380 | } |
| 3381 | |
| 3382 | offsetToData += table_start; |
| 3383 | |
Werner Lemberg | 337e49c | 2017-12-04 12:36:07 +0100 | [diff] [blame] | 3384 | if ( tupleCount & GX_TC_TUPLES_SHARE_POINT_NUMBERS ) |
| 3385 | { |
| 3386 | here = FT_Stream_FTell( stream ); |
| 3387 | |
| 3388 | FT_Stream_SeekSet( stream, offsetToData ); |
| 3389 | |
| 3390 | sharedpoints = ft_var_readpackedpoints( stream, |
| 3391 | table_len, |
| 3392 | &spoint_count ); |
| 3393 | offsetToData = FT_Stream_FTell( stream ); |
| 3394 | |
| 3395 | FT_Stream_SeekSet( stream, here ); |
| 3396 | } |
Werner Lemberg | da34673 | 2015-10-10 10:21:27 +0200 | [diff] [blame] | 3397 | |
Werner Lemberg | 71fecc5 | 2017-12-05 12:06:29 +0100 | [diff] [blame] | 3398 | FT_TRACE5(( "cvar: there %s %d tuple%s:\n", |
Alexei Podtelezhnikov | 1f43aff | 2018-11-04 13:11:16 -0500 | [diff] [blame] | 3399 | ( tupleCount & GX_TC_TUPLE_COUNT_MASK ) == 1 ? "is" : "are", |
| 3400 | tupleCount & GX_TC_TUPLE_COUNT_MASK, |
| 3401 | ( tupleCount & GX_TC_TUPLE_COUNT_MASK ) == 1 ? "" : "s" )); |
Werner Lemberg | cdee7d1 | 2015-05-31 11:54:42 +0200 | [diff] [blame] | 3402 | |
Werner Lemberg | a632fb5 | 2018-06-24 15:22:10 +0200 | [diff] [blame] | 3403 | if ( FT_NEW_ARRAY( cvt_deltas, face->cvt_size ) ) |
| 3404 | goto FExit; |
| 3405 | |
Alexei Podtelezhnikov | 1f43aff | 2018-11-04 13:11:16 -0500 | [diff] [blame] | 3406 | for ( i = 0; i < ( tupleCount & GX_TC_TUPLE_COUNT_MASK ); i++ ) |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 3407 | { |
| 3408 | FT_UInt tupleDataSize; |
| 3409 | FT_UInt tupleIndex; |
| 3410 | FT_Fixed apply; |
| 3411 | |
| 3412 | |
Werner Lemberg | cdee7d1 | 2015-05-31 11:54:42 +0200 | [diff] [blame] | 3413 | FT_TRACE6(( " tuple %d:\n", i )); |
| 3414 | |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 3415 | tupleDataSize = FT_GET_USHORT(); |
| 3416 | tupleIndex = FT_GET_USHORT(); |
| 3417 | |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 3418 | if ( tupleIndex & GX_TI_EMBEDDED_TUPLE_COORD ) |
| 3419 | { |
Werner Lemberg | 0aa3616 | 2015-03-08 22:50:37 +0100 | [diff] [blame] | 3420 | for ( j = 0; j < blend->num_axis; j++ ) |
Werner Lemberg | dc39f76 | 2019-05-07 10:09:55 +0200 | [diff] [blame] | 3421 | tuple_coords[j] = FT_fdot14ToFixed( FT_GET_SHORT() ); |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 3422 | } |
Werner Lemberg | 337e49c | 2017-12-04 12:36:07 +0100 | [diff] [blame] | 3423 | else if ( ( tupleIndex & GX_TI_TUPLE_INDEX_MASK ) >= blend->tuplecount ) |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 3424 | { |
Werner Lemberg | 337e49c | 2017-12-04 12:36:07 +0100 | [diff] [blame] | 3425 | FT_TRACE2(( "tt_face_vary_cvt:" |
| 3426 | " invalid tuple index\n" )); |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 3427 | |
Werner Lemberg | 337e49c | 2017-12-04 12:36:07 +0100 | [diff] [blame] | 3428 | error = FT_THROW( Invalid_Table ); |
Werner Lemberg | 10e54d0 | 2018-09-13 21:47:35 +0200 | [diff] [blame] | 3429 | goto FExit; |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 3430 | } |
Werner Lemberg | 337e49c | 2017-12-04 12:36:07 +0100 | [diff] [blame] | 3431 | else |
Werner Lemberg | 10e54d0 | 2018-09-13 21:47:35 +0200 | [diff] [blame] | 3432 | { |
| 3433 | if ( !blend->tuplecoords ) |
| 3434 | { |
| 3435 | FT_TRACE2(( "tt_face_vary_cvt:" |
| 3436 | " no valid tuple coordinates available\n" )); |
| 3437 | |
| 3438 | error = FT_THROW( Invalid_Table ); |
| 3439 | goto FExit; |
| 3440 | } |
| 3441 | |
Werner Lemberg | 337e49c | 2017-12-04 12:36:07 +0100 | [diff] [blame] | 3442 | FT_MEM_COPY( |
| 3443 | tuple_coords, |
Alexei Podtelezhnikov | 1f43aff | 2018-11-04 13:11:16 -0500 | [diff] [blame] | 3444 | blend->tuplecoords + |
| 3445 | ( tupleIndex & GX_TI_TUPLE_INDEX_MASK ) * blend->num_axis, |
Werner Lemberg | 337e49c | 2017-12-04 12:36:07 +0100 | [diff] [blame] | 3446 | blend->num_axis * sizeof ( FT_Fixed ) ); |
Werner Lemberg | 10e54d0 | 2018-09-13 21:47:35 +0200 | [diff] [blame] | 3447 | } |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 3448 | |
| 3449 | if ( tupleIndex & GX_TI_INTERMEDIATE_TUPLE ) |
| 3450 | { |
Werner Lemberg | 0aa3616 | 2015-03-08 22:50:37 +0100 | [diff] [blame] | 3451 | for ( j = 0; j < blend->num_axis; j++ ) |
Werner Lemberg | dc39f76 | 2019-05-07 10:09:55 +0200 | [diff] [blame] | 3452 | im_start_coords[j] = FT_fdot14ToFixed( FT_GET_SHORT() ); |
Werner Lemberg | 0aa3616 | 2015-03-08 22:50:37 +0100 | [diff] [blame] | 3453 | for ( j = 0; j < blend->num_axis; j++ ) |
Werner Lemberg | dc39f76 | 2019-05-07 10:09:55 +0200 | [diff] [blame] | 3454 | im_end_coords[j] = FT_fdot14ToFixed( FT_GET_SHORT() ); |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 3455 | } |
| 3456 | |
| 3457 | apply = ft_var_apply_tuple( blend, |
Werner Lemberg | 22ad9ef | 2005-05-09 22:11:36 +0000 | [diff] [blame] | 3458 | (FT_UShort)tupleIndex, |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 3459 | tuple_coords, |
| 3460 | im_start_coords, |
| 3461 | im_end_coords ); |
Werner Lemberg | 337e49c | 2017-12-04 12:36:07 +0100 | [diff] [blame] | 3462 | |
| 3463 | if ( apply == 0 ) /* tuple isn't active for our blend */ |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 3464 | { |
Yamato, Masatake (大和æ£æ¦) | 17f4b8b | 2004-05-07 08:59:29 +0000 | [diff] [blame] | 3465 | offsetToData += tupleDataSize; |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 3466 | continue; |
| 3467 | } |
| 3468 | |
| 3469 | here = FT_Stream_FTell( stream ); |
| 3470 | |
Yamato, Masatake (大和æ£æ¦) | 17f4b8b | 2004-05-07 08:59:29 +0000 | [diff] [blame] | 3471 | FT_Stream_SeekSet( stream, offsetToData ); |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 3472 | |
Werner Lemberg | 337e49c | 2017-12-04 12:36:07 +0100 | [diff] [blame] | 3473 | if ( tupleIndex & GX_TI_PRIVATE_POINT_NUMBERS ) |
| 3474 | { |
| 3475 | localpoints = ft_var_readpackedpoints( stream, |
| 3476 | table_len, |
| 3477 | &point_count ); |
| 3478 | points = localpoints; |
| 3479 | } |
| 3480 | else |
| 3481 | { |
| 3482 | points = sharedpoints; |
| 3483 | point_count = spoint_count; |
| 3484 | } |
| 3485 | |
| 3486 | deltas = ft_var_readpackeddeltas( stream, |
| 3487 | table_len, |
| 3488 | point_count == 0 ? face->cvt_size |
| 3489 | : point_count ); |
Werner Lemberg | 2fe272a | 2017-12-18 19:40:07 +0100 | [diff] [blame] | 3490 | |
Jany Belluz | 9ed5332 | 2021-11-04 08:56:59 +0000 | [diff] [blame] | 3491 | if ( !points || !deltas ) |
Werner Lemberg | 0aa3616 | 2015-03-08 22:50:37 +0100 | [diff] [blame] | 3492 | ; /* failure, ignore it */ |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 3493 | |
| 3494 | else if ( localpoints == ALL_POINTS ) |
| 3495 | { |
Werner Lemberg | cdee7d1 | 2015-05-31 11:54:42 +0200 | [diff] [blame] | 3496 | #ifdef FT_DEBUG_LEVEL_TRACE |
| 3497 | int count = 0; |
| 3498 | #endif |
| 3499 | |
| 3500 | |
| 3501 | FT_TRACE7(( " CVT deltas:\n" )); |
| 3502 | |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 3503 | /* this means that there are deltas for every entry in cvt */ |
Werner Lemberg | 0aa3616 | 2015-03-08 22:50:37 +0100 | [diff] [blame] | 3504 | for ( j = 0; j < face->cvt_size; j++ ) |
Werner Lemberg | cdee7d1 | 2015-05-31 11:54:42 +0200 | [diff] [blame] | 3505 | { |
Werner Lemberg | a632fb5 | 2018-06-24 15:22:10 +0200 | [diff] [blame] | 3506 | FT_Fixed old_cvt_delta; |
Werner Lemberg | cdee7d1 | 2015-05-31 11:54:42 +0200 | [diff] [blame] | 3507 | |
| 3508 | |
Werner Lemberg | a632fb5 | 2018-06-24 15:22:10 +0200 | [diff] [blame] | 3509 | old_cvt_delta = cvt_deltas[j]; |
| 3510 | cvt_deltas[j] = old_cvt_delta + FT_MulFix( deltas[j], apply ); |
Werner Lemberg | cdee7d1 | 2015-05-31 11:54:42 +0200 | [diff] [blame] | 3511 | |
| 3512 | #ifdef FT_DEBUG_LEVEL_TRACE |
Werner Lemberg | a632fb5 | 2018-06-24 15:22:10 +0200 | [diff] [blame] | 3513 | if ( old_cvt_delta != cvt_deltas[j] ) |
Werner Lemberg | cdee7d1 | 2015-05-31 11:54:42 +0200 | [diff] [blame] | 3514 | { |
Werner Lemberg | a632fb5 | 2018-06-24 15:22:10 +0200 | [diff] [blame] | 3515 | FT_TRACE7(( " %d: %f -> %f\n", |
| 3516 | j, |
Werner Lemberg | 3758005 | 2019-05-16 12:15:54 +0200 | [diff] [blame] | 3517 | ( FT_fdot6ToFixed( face->cvt[j] ) + |
Werner Lemberg | a632fb5 | 2018-06-24 15:22:10 +0200 | [diff] [blame] | 3518 | old_cvt_delta ) / 65536.0, |
Werner Lemberg | 3758005 | 2019-05-16 12:15:54 +0200 | [diff] [blame] | 3519 | ( FT_fdot6ToFixed( face->cvt[j] ) + |
Werner Lemberg | a632fb5 | 2018-06-24 15:22:10 +0200 | [diff] [blame] | 3520 | cvt_deltas[j] ) / 65536.0 )); |
Werner Lemberg | cdee7d1 | 2015-05-31 11:54:42 +0200 | [diff] [blame] | 3521 | count++; |
| 3522 | } |
| 3523 | #endif |
| 3524 | } |
| 3525 | |
| 3526 | #ifdef FT_DEBUG_LEVEL_TRACE |
| 3527 | if ( !count ) |
| 3528 | FT_TRACE7(( " none\n" )); |
| 3529 | #endif |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 3530 | } |
| 3531 | |
| 3532 | else |
| 3533 | { |
Werner Lemberg | cdee7d1 | 2015-05-31 11:54:42 +0200 | [diff] [blame] | 3534 | #ifdef FT_DEBUG_LEVEL_TRACE |
| 3535 | int count = 0; |
| 3536 | #endif |
| 3537 | |
| 3538 | |
| 3539 | FT_TRACE7(( " CVT deltas:\n" )); |
| 3540 | |
Werner Lemberg | 0aa3616 | 2015-03-08 22:50:37 +0100 | [diff] [blame] | 3541 | for ( j = 0; j < point_count; j++ ) |
David Turner | 750fa96 | 2005-05-01 10:11:32 +0000 | [diff] [blame] | 3542 | { |
Werner Lemberg | a632fb5 | 2018-06-24 15:22:10 +0200 | [diff] [blame] | 3543 | int pindex; |
| 3544 | FT_Fixed old_cvt_delta; |
David Turner | 9ca7825 | 2006-05-02 09:00:29 +0000 | [diff] [blame] | 3545 | |
Werner Lemberg | 0aa3616 | 2015-03-08 22:50:37 +0100 | [diff] [blame] | 3546 | |
Werner Lemberg | 337e49c | 2017-12-04 12:36:07 +0100 | [diff] [blame] | 3547 | pindex = points[j]; |
Werner Lemberg | 7eeaf98 | 2016-10-14 08:58:17 +0200 | [diff] [blame] | 3548 | if ( (FT_ULong)pindex >= face->cvt_size ) |
| 3549 | continue; |
| 3550 | |
Werner Lemberg | a632fb5 | 2018-06-24 15:22:10 +0200 | [diff] [blame] | 3551 | old_cvt_delta = cvt_deltas[pindex]; |
| 3552 | cvt_deltas[pindex] = old_cvt_delta + FT_MulFix( deltas[j], apply ); |
Werner Lemberg | cdee7d1 | 2015-05-31 11:54:42 +0200 | [diff] [blame] | 3553 | |
| 3554 | #ifdef FT_DEBUG_LEVEL_TRACE |
Werner Lemberg | a632fb5 | 2018-06-24 15:22:10 +0200 | [diff] [blame] | 3555 | if ( old_cvt_delta != cvt_deltas[pindex] ) |
Werner Lemberg | cdee7d1 | 2015-05-31 11:54:42 +0200 | [diff] [blame] | 3556 | { |
Werner Lemberg | a632fb5 | 2018-06-24 15:22:10 +0200 | [diff] [blame] | 3557 | FT_TRACE7(( " %d: %f -> %f\n", |
| 3558 | pindex, |
Werner Lemberg | 3758005 | 2019-05-16 12:15:54 +0200 | [diff] [blame] | 3559 | ( FT_fdot6ToFixed( face->cvt[pindex] ) + |
Werner Lemberg | a632fb5 | 2018-06-24 15:22:10 +0200 | [diff] [blame] | 3560 | old_cvt_delta ) / 65536.0, |
Werner Lemberg | 3758005 | 2019-05-16 12:15:54 +0200 | [diff] [blame] | 3561 | ( FT_fdot6ToFixed( face->cvt[pindex] ) + |
Werner Lemberg | a632fb5 | 2018-06-24 15:22:10 +0200 | [diff] [blame] | 3562 | cvt_deltas[pindex] ) / 65536.0 )); |
Werner Lemberg | cdee7d1 | 2015-05-31 11:54:42 +0200 | [diff] [blame] | 3563 | count++; |
| 3564 | } |
| 3565 | #endif |
David Turner | 750fa96 | 2005-05-01 10:11:32 +0000 | [diff] [blame] | 3566 | } |
Werner Lemberg | cdee7d1 | 2015-05-31 11:54:42 +0200 | [diff] [blame] | 3567 | |
| 3568 | #ifdef FT_DEBUG_LEVEL_TRACE |
| 3569 | if ( !count ) |
| 3570 | FT_TRACE7(( " none\n" )); |
| 3571 | #endif |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 3572 | } |
| 3573 | |
| 3574 | if ( localpoints != ALL_POINTS ) |
| 3575 | FT_FREE( localpoints ); |
| 3576 | FT_FREE( deltas ); |
| 3577 | |
Yamato, Masatake (大和æ£æ¦) | 17f4b8b | 2004-05-07 08:59:29 +0000 | [diff] [blame] | 3578 | offsetToData += tupleDataSize; |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 3579 | |
| 3580 | FT_Stream_SeekSet( stream, here ); |
| 3581 | } |
| 3582 | |
Werner Lemberg | cdee7d1 | 2015-05-31 11:54:42 +0200 | [diff] [blame] | 3583 | FT_TRACE5(( "\n" )); |
| 3584 | |
Werner Lemberg | a632fb5 | 2018-06-24 15:22:10 +0200 | [diff] [blame] | 3585 | for ( i = 0; i < face->cvt_size; i++ ) |
Werner Lemberg | 3758005 | 2019-05-16 12:15:54 +0200 | [diff] [blame] | 3586 | face->cvt[i] += FT_fixedToFdot6( cvt_deltas[i] ); |
Werner Lemberg | a632fb5 | 2018-06-24 15:22:10 +0200 | [diff] [blame] | 3587 | |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 3588 | FExit: |
| 3589 | FT_FRAME_EXIT(); |
| 3590 | |
| 3591 | Exit: |
Werner Lemberg | 337e49c | 2017-12-04 12:36:07 +0100 | [diff] [blame] | 3592 | if ( sharedpoints != ALL_POINTS ) |
| 3593 | FT_FREE( sharedpoints ); |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 3594 | FT_FREE( tuple_coords ); |
| 3595 | FT_FREE( im_start_coords ); |
| 3596 | FT_FREE( im_end_coords ); |
Werner Lemberg | a632fb5 | 2018-06-24 15:22:10 +0200 | [diff] [blame] | 3597 | FT_FREE( cvt_deltas ); |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 3598 | |
Werner Lemberg | b052270 | 2019-05-16 12:52:57 +0200 | [diff] [blame] | 3599 | /* iterate over all FT_Size objects and set `cvt_ready' to -1 */ |
| 3600 | /* to trigger rescaling of all CVT values */ |
| 3601 | FT_List_Iterate( &root->sizes_list, |
| 3602 | tt_cvt_ready_iterator, |
| 3603 | NULL ); |
| 3604 | |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 3605 | return error; |
Werner Lemberg | d1c2000 | 2021-08-28 07:29:05 +0200 | [diff] [blame] | 3606 | |
| 3607 | #else /* !TT_CONFIG_OPTION_BYTECODE_INTERPRETER */ |
| 3608 | |
| 3609 | FT_UNUSED( face ); |
| 3610 | FT_UNUSED( stream ); |
| 3611 | |
| 3612 | return FT_Err_Ok; |
| 3613 | |
| 3614 | #endif /* !TT_CONFIG_OPTION_BYTECODE_INTERPRETER */ |
| 3615 | |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 3616 | } |
| 3617 | |
| 3618 | |
Werner Lemberg | e9df4e4 | 2015-05-31 12:21:34 +0200 | [diff] [blame] | 3619 | /* Shift the original coordinates of all points between indices `p1' */ |
| 3620 | /* and `p2', using the same difference as given by index `ref'. */ |
| 3621 | |
| 3622 | /* modeled after `af_iup_shift' */ |
| 3623 | |
| 3624 | static void |
| 3625 | tt_delta_shift( int p1, |
| 3626 | int p2, |
| 3627 | int ref, |
| 3628 | FT_Vector* in_points, |
| 3629 | FT_Vector* out_points ) |
| 3630 | { |
| 3631 | int p; |
| 3632 | FT_Vector delta; |
| 3633 | |
| 3634 | |
| 3635 | delta.x = out_points[ref].x - in_points[ref].x; |
| 3636 | delta.y = out_points[ref].y - in_points[ref].y; |
| 3637 | |
| 3638 | if ( delta.x == 0 && delta.y == 0 ) |
| 3639 | return; |
| 3640 | |
| 3641 | for ( p = p1; p < ref; p++ ) |
| 3642 | { |
| 3643 | out_points[p].x += delta.x; |
| 3644 | out_points[p].y += delta.y; |
| 3645 | } |
| 3646 | |
| 3647 | for ( p = ref + 1; p <= p2; p++ ) |
| 3648 | { |
| 3649 | out_points[p].x += delta.x; |
| 3650 | out_points[p].y += delta.y; |
| 3651 | } |
| 3652 | } |
| 3653 | |
| 3654 | |
| 3655 | /* Interpolate the original coordinates of all points with indices */ |
| 3656 | /* between `p1' and `p2', using `ref1' and `ref2' as the reference */ |
| 3657 | /* point indices. */ |
| 3658 | |
Alexei Podtelezhnikov | ce3feb0 | 2018-11-03 22:43:21 -0400 | [diff] [blame] | 3659 | /* modeled after `af_iup_interp', `_iup_worker_interpolate', and */ |
Alexei Podtelezhnikov | 1f43aff | 2018-11-04 13:11:16 -0500 | [diff] [blame] | 3660 | /* `Ins_IUP' with spec differences in handling ill-defined cases. */ |
Werner Lemberg | e9df4e4 | 2015-05-31 12:21:34 +0200 | [diff] [blame] | 3661 | static void |
| 3662 | tt_delta_interpolate( int p1, |
| 3663 | int p2, |
| 3664 | int ref1, |
| 3665 | int ref2, |
| 3666 | FT_Vector* in_points, |
| 3667 | FT_Vector* out_points ) |
| 3668 | { |
| 3669 | int p, i; |
| 3670 | |
| 3671 | FT_Pos out, in1, in2, out1, out2, d1, d2; |
| 3672 | |
| 3673 | |
| 3674 | if ( p1 > p2 ) |
| 3675 | return; |
| 3676 | |
| 3677 | /* handle both horizontal and vertical coordinates */ |
| 3678 | for ( i = 0; i <= 1; i++ ) |
| 3679 | { |
| 3680 | /* shift array pointers so that we can access `foo.y' as `foo.x' */ |
| 3681 | in_points = (FT_Vector*)( (FT_Pos*)in_points + i ); |
| 3682 | out_points = (FT_Vector*)( (FT_Pos*)out_points + i ); |
| 3683 | |
| 3684 | if ( in_points[ref1].x > in_points[ref2].x ) |
| 3685 | { |
| 3686 | p = ref1; |
| 3687 | ref1 = ref2; |
| 3688 | ref2 = p; |
| 3689 | } |
| 3690 | |
| 3691 | in1 = in_points[ref1].x; |
| 3692 | in2 = in_points[ref2].x; |
| 3693 | out1 = out_points[ref1].x; |
| 3694 | out2 = out_points[ref2].x; |
| 3695 | d1 = out1 - in1; |
| 3696 | d2 = out2 - in2; |
| 3697 | |
Behdad Esfahbod | 60bf264 | 2017-05-02 14:38:54 +0200 | [diff] [blame] | 3698 | /* If the reference points have the same coordinate but different */ |
| 3699 | /* delta, inferred delta is zero. Otherwise interpolate. */ |
Alexei Podtelezhnikov | dfa86d6 | 2018-11-03 22:36:52 -0400 | [diff] [blame] | 3700 | if ( in1 != in2 || out1 == out2 ) |
Werner Lemberg | e9df4e4 | 2015-05-31 12:21:34 +0200 | [diff] [blame] | 3701 | { |
Alexei Podtelezhnikov | dfa86d6 | 2018-11-03 22:36:52 -0400 | [diff] [blame] | 3702 | FT_Fixed scale = in1 != in2 ? FT_DivFix( out2 - out1, in2 - in1 ) |
| 3703 | : 0; |
Werner Lemberg | e9df4e4 | 2015-05-31 12:21:34 +0200 | [diff] [blame] | 3704 | |
| 3705 | |
| 3706 | for ( p = p1; p <= p2; p++ ) |
| 3707 | { |
| 3708 | out = in_points[p].x; |
| 3709 | |
| 3710 | if ( out <= in1 ) |
| 3711 | out += d1; |
| 3712 | else if ( out >= in2 ) |
| 3713 | out += d2; |
| 3714 | else |
| 3715 | out = out1 + FT_MulFix( out - in1, scale ); |
| 3716 | |
| 3717 | out_points[p].x = out; |
| 3718 | } |
| 3719 | } |
| 3720 | } |
| 3721 | } |
| 3722 | |
| 3723 | |
| 3724 | /* Interpolate points without delta values, similar to */ |
| 3725 | /* the `IUP' hinting instruction. */ |
| 3726 | |
| 3727 | /* modeled after `Ins_IUP */ |
| 3728 | |
| 3729 | static void |
Werner Lemberg | f147fb2 | 2016-07-16 07:06:21 +0200 | [diff] [blame] | 3730 | tt_interpolate_deltas( FT_Outline* outline, |
| 3731 | FT_Vector* out_points, |
| 3732 | FT_Vector* in_points, |
| 3733 | FT_Bool* has_delta ) |
Werner Lemberg | e9df4e4 | 2015-05-31 12:21:34 +0200 | [diff] [blame] | 3734 | { |
Werner Lemberg | eb1bba9 | 2015-06-30 09:46:39 +0200 | [diff] [blame] | 3735 | FT_Int first_point; |
| 3736 | FT_Int end_point; |
Werner Lemberg | e9df4e4 | 2015-05-31 12:21:34 +0200 | [diff] [blame] | 3737 | |
Werner Lemberg | eb1bba9 | 2015-06-30 09:46:39 +0200 | [diff] [blame] | 3738 | FT_Int first_delta; |
| 3739 | FT_Int cur_delta; |
Werner Lemberg | e9df4e4 | 2015-05-31 12:21:34 +0200 | [diff] [blame] | 3740 | |
Werner Lemberg | eb1bba9 | 2015-06-30 09:46:39 +0200 | [diff] [blame] | 3741 | FT_Int point; |
Werner Lemberg | e9df4e4 | 2015-05-31 12:21:34 +0200 | [diff] [blame] | 3742 | FT_Short contour; |
| 3743 | |
| 3744 | |
| 3745 | /* ignore empty outlines */ |
| 3746 | if ( !outline->n_contours ) |
| 3747 | return; |
| 3748 | |
Werner Lemberg | e9df4e4 | 2015-05-31 12:21:34 +0200 | [diff] [blame] | 3749 | contour = 0; |
| 3750 | point = 0; |
| 3751 | |
| 3752 | do |
| 3753 | { |
| 3754 | end_point = outline->contours[contour]; |
| 3755 | first_point = point; |
| 3756 | |
| 3757 | /* search first point that has a delta */ |
| 3758 | while ( point <= end_point && !has_delta[point] ) |
| 3759 | point++; |
| 3760 | |
| 3761 | if ( point <= end_point ) |
| 3762 | { |
| 3763 | first_delta = point; |
| 3764 | cur_delta = point; |
| 3765 | |
| 3766 | point++; |
| 3767 | |
| 3768 | while ( point <= end_point ) |
| 3769 | { |
| 3770 | /* search next point that has a delta */ |
| 3771 | /* and interpolate intermediate points */ |
| 3772 | if ( has_delta[point] ) |
| 3773 | { |
| 3774 | tt_delta_interpolate( cur_delta + 1, |
| 3775 | point - 1, |
| 3776 | cur_delta, |
| 3777 | point, |
| 3778 | in_points, |
| 3779 | out_points ); |
| 3780 | cur_delta = point; |
| 3781 | } |
| 3782 | |
| 3783 | point++; |
| 3784 | } |
| 3785 | |
| 3786 | /* shift contour if we only have a single delta */ |
| 3787 | if ( cur_delta == first_delta ) |
| 3788 | tt_delta_shift( first_point, |
| 3789 | end_point, |
| 3790 | cur_delta, |
| 3791 | in_points, |
| 3792 | out_points ); |
| 3793 | else |
| 3794 | { |
| 3795 | /* otherwise handle remaining points */ |
| 3796 | /* at the end and beginning of the contour */ |
| 3797 | tt_delta_interpolate( cur_delta + 1, |
| 3798 | end_point, |
| 3799 | cur_delta, |
| 3800 | first_delta, |
| 3801 | in_points, |
| 3802 | out_points ); |
| 3803 | |
| 3804 | if ( first_delta > 0 ) |
| 3805 | tt_delta_interpolate( first_point, |
| 3806 | first_delta - 1, |
| 3807 | cur_delta, |
| 3808 | first_delta, |
| 3809 | in_points, |
| 3810 | out_points ); |
| 3811 | } |
| 3812 | } |
| 3813 | contour++; |
| 3814 | |
| 3815 | } while ( contour < outline->n_contours ); |
| 3816 | } |
| 3817 | |
| 3818 | |
Werner Lemberg | 9ac9060 | 2018-06-03 09:01:17 +0200 | [diff] [blame] | 3819 | /************************************************************************** |
| 3820 | * |
| 3821 | * @Function: |
| 3822 | * TT_Vary_Apply_Glyph_Deltas |
| 3823 | * |
| 3824 | * @Description: |
| 3825 | * Apply the appropriate deltas to the current glyph. |
| 3826 | * |
| 3827 | * @Input: |
| 3828 | * face :: |
| 3829 | * A handle to the target face object. |
| 3830 | * |
| 3831 | * glyph_index :: |
| 3832 | * The index of the glyph being modified. |
| 3833 | * |
| 3834 | * n_points :: |
| 3835 | * The number of the points in the glyph, including |
| 3836 | * phantom points. |
| 3837 | * |
| 3838 | * @InOut: |
| 3839 | * outline :: |
| 3840 | * The outline to change. |
| 3841 | * |
Werner Lemberg | 1178227 | 2019-05-11 09:29:19 +0200 | [diff] [blame] | 3842 | * @Output: |
| 3843 | * unrounded :: |
| 3844 | * An array with `n_points' elements that is filled with unrounded |
| 3845 | * point coordinates (in 26.6 format). |
| 3846 | * |
Werner Lemberg | 9ac9060 | 2018-06-03 09:01:17 +0200 | [diff] [blame] | 3847 | * @Return: |
| 3848 | * FreeType error code. 0 means success. |
| 3849 | */ |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 3850 | FT_LOCAL_DEF( FT_Error ) |
Werner Lemberg | e9df4e4 | 2015-05-31 12:21:34 +0200 | [diff] [blame] | 3851 | TT_Vary_Apply_Glyph_Deltas( TT_Face face, |
| 3852 | FT_UInt glyph_index, |
| 3853 | FT_Outline* outline, |
Werner Lemberg | 1178227 | 2019-05-11 09:29:19 +0200 | [diff] [blame] | 3854 | FT_Vector* unrounded, |
Werner Lemberg | e9df4e4 | 2015-05-31 12:21:34 +0200 | [diff] [blame] | 3855 | FT_UInt n_points ) |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 3856 | { |
Werner Lemberg | 207ca38 | 2018-06-25 18:50:00 +0200 | [diff] [blame] | 3857 | FT_Error error; |
| 3858 | FT_Stream stream = face->root.stream; |
| 3859 | FT_Memory memory = stream->memory; |
Werner Lemberg | e9df4e4 | 2015-05-31 12:21:34 +0200 | [diff] [blame] | 3860 | |
Werner Lemberg | a632fb5 | 2018-06-24 15:22:10 +0200 | [diff] [blame] | 3861 | FT_Vector* points_org = NULL; /* coordinates in 16.16 format */ |
| 3862 | FT_Vector* points_out = NULL; /* coordinates in 16.16 format */ |
Werner Lemberg | e9df4e4 | 2015-05-31 12:21:34 +0200 | [diff] [blame] | 3863 | FT_Bool* has_delta = NULL; |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 3864 | |
Werner Lemberg | 207ca38 | 2018-06-25 18:50:00 +0200 | [diff] [blame] | 3865 | FT_ULong glyph_start; |
| 3866 | |
| 3867 | FT_UInt tupleCount; |
| 3868 | FT_ULong offsetToData; |
Werner Lemberg | 65681e6 | 2018-09-12 07:40:49 +0200 | [diff] [blame] | 3869 | FT_ULong dataSize; |
Werner Lemberg | 207ca38 | 2018-06-25 18:50:00 +0200 | [diff] [blame] | 3870 | |
| 3871 | FT_ULong here; |
| 3872 | FT_UInt i, j; |
| 3873 | |
| 3874 | FT_Fixed* tuple_coords = NULL; |
| 3875 | FT_Fixed* im_start_coords = NULL; |
| 3876 | FT_Fixed* im_end_coords = NULL; |
| 3877 | |
| 3878 | GX_Blend blend = face->blend; |
| 3879 | |
| 3880 | FT_UInt point_count; |
| 3881 | FT_UInt spoint_count = 0; |
| 3882 | |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 3883 | FT_UShort* sharedpoints = NULL; |
David Turner | 750fa96 | 2005-05-01 10:11:32 +0000 | [diff] [blame] | 3884 | FT_UShort* localpoints = NULL; |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 3885 | FT_UShort* points; |
Werner Lemberg | a632fb5 | 2018-06-24 15:22:10 +0200 | [diff] [blame] | 3886 | |
Werner Lemberg | 207ca38 | 2018-06-25 18:50:00 +0200 | [diff] [blame] | 3887 | FT_Fixed* deltas_x = NULL; |
| 3888 | FT_Fixed* deltas_y = NULL; |
| 3889 | FT_Fixed* point_deltas_x = NULL; |
| 3890 | FT_Fixed* point_deltas_y = NULL; |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 3891 | |
| 3892 | |
Werner Lemberg | 4441f7b | 2016-12-26 17:08:17 +0100 | [diff] [blame] | 3893 | if ( !face->doblend || !blend ) |
Werner Lemberg | 059bc33 | 2013-03-14 10:27:35 +0100 | [diff] [blame] | 3894 | return FT_THROW( Invalid_Argument ); |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 3895 | |
Werner Lemberg | 306d2f6 | 2019-05-23 14:41:57 +0200 | [diff] [blame] | 3896 | for ( i = 0; i < n_points; i++ ) |
| 3897 | { |
| 3898 | unrounded[i].x = INT_TO_F26DOT6( outline->points[i].x ); |
| 3899 | unrounded[i].y = INT_TO_F26DOT6( outline->points[i].y ); |
| 3900 | } |
| 3901 | |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 3902 | if ( glyph_index >= blend->gv_glyphcnt || |
| 3903 | blend->glyphoffsets[glyph_index] == |
| 3904 | blend->glyphoffsets[glyph_index + 1] ) |
Werner Lemberg | e9df4e4 | 2015-05-31 12:21:34 +0200 | [diff] [blame] | 3905 | { |
| 3906 | FT_TRACE2(( "TT_Vary_Apply_Glyph_Deltas:" |
Ben Wagner | 216e077 | 2020-02-28 07:43:00 +0100 | [diff] [blame] | 3907 | " no variation data for glyph %d\n", glyph_index )); |
Werner Lemberg | e9df4e4 | 2015-05-31 12:21:34 +0200 | [diff] [blame] | 3908 | return FT_Err_Ok; |
| 3909 | } |
| 3910 | |
| 3911 | if ( FT_NEW_ARRAY( points_org, n_points ) || |
Werner Lemberg | f147fb2 | 2016-07-16 07:06:21 +0200 | [diff] [blame] | 3912 | FT_NEW_ARRAY( points_out, n_points ) || |
Werner Lemberg | e9df4e4 | 2015-05-31 12:21:34 +0200 | [diff] [blame] | 3913 | FT_NEW_ARRAY( has_delta, n_points ) ) |
| 3914 | goto Fail1; |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 3915 | |
Werner Lemberg | 65681e6 | 2018-09-12 07:40:49 +0200 | [diff] [blame] | 3916 | dataSize = blend->glyphoffsets[glyph_index + 1] - |
| 3917 | blend->glyphoffsets[glyph_index]; |
| 3918 | |
| 3919 | if ( FT_STREAM_SEEK( blend->glyphoffsets[glyph_index] ) || |
| 3920 | FT_FRAME_ENTER( dataSize ) ) |
Werner Lemberg | 3bcad43 | 2004-05-06 11:48:35 +0000 | [diff] [blame] | 3921 | goto Fail1; |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 3922 | |
| 3923 | glyph_start = FT_Stream_FTell( stream ); |
| 3924 | |
| 3925 | /* each set of glyph variation data is formatted similarly to `cvar' */ |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 3926 | |
| 3927 | if ( FT_NEW_ARRAY( tuple_coords, blend->num_axis ) || |
| 3928 | FT_NEW_ARRAY( im_start_coords, blend->num_axis ) || |
| 3929 | FT_NEW_ARRAY( im_end_coords, blend->num_axis ) ) |
Werner Lemberg | 3bcad43 | 2004-05-06 11:48:35 +0000 | [diff] [blame] | 3930 | goto Fail2; |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 3931 | |
| 3932 | tupleCount = FT_GET_USHORT(); |
Werner Lemberg | 052f6c5 | 2015-10-13 08:24:32 +0200 | [diff] [blame] | 3933 | offsetToData = FT_GET_USHORT(); |
| 3934 | |
| 3935 | /* rough sanity test */ |
Ben Wagner | fb0d66d | 2018-11-07 00:47:44 +0100 | [diff] [blame] | 3936 | if ( offsetToData > dataSize || |
| 3937 | ( tupleCount & GX_TC_TUPLE_COUNT_MASK ) * 4 > dataSize ) |
Werner Lemberg | 052f6c5 | 2015-10-13 08:24:32 +0200 | [diff] [blame] | 3938 | { |
| 3939 | FT_TRACE2(( "TT_Vary_Apply_Glyph_Deltas:" |
| 3940 | " invalid glyph variation array header\n" )); |
| 3941 | |
| 3942 | error = FT_THROW( Invalid_Table ); |
| 3943 | goto Fail2; |
| 3944 | } |
| 3945 | |
| 3946 | offsetToData += glyph_start; |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 3947 | |
| 3948 | if ( tupleCount & GX_TC_TUPLES_SHARE_POINT_NUMBERS ) |
| 3949 | { |
| 3950 | here = FT_Stream_FTell( stream ); |
| 3951 | |
Yamato, Masatake (大和æ£æ¦) | 17f4b8b | 2004-05-07 08:59:29 +0000 | [diff] [blame] | 3952 | FT_Stream_SeekSet( stream, offsetToData ); |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 3953 | |
Werner Lemberg | 43a96eb | 2015-10-13 11:18:55 +0200 | [diff] [blame] | 3954 | sharedpoints = ft_var_readpackedpoints( stream, |
| 3955 | blend->gvar_size, |
| 3956 | &spoint_count ); |
Yamato, Masatake (大和æ£æ¦) | 17f4b8b | 2004-05-07 08:59:29 +0000 | [diff] [blame] | 3957 | offsetToData = FT_Stream_FTell( stream ); |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 3958 | |
| 3959 | FT_Stream_SeekSet( stream, here ); |
| 3960 | } |
| 3961 | |
Werner Lemberg | 71fecc5 | 2017-12-05 12:06:29 +0100 | [diff] [blame] | 3962 | FT_TRACE5(( "gvar: there %s %d tuple%s:\n", |
| 3963 | ( tupleCount & GX_TC_TUPLE_COUNT_MASK ) == 1 ? "is" : "are", |
| 3964 | tupleCount & GX_TC_TUPLE_COUNT_MASK, |
| 3965 | ( tupleCount & GX_TC_TUPLE_COUNT_MASK ) == 1 ? "" : "s" )); |
Werner Lemberg | e9df4e4 | 2015-05-31 12:21:34 +0200 | [diff] [blame] | 3966 | |
Werner Lemberg | a632fb5 | 2018-06-24 15:22:10 +0200 | [diff] [blame] | 3967 | if ( FT_NEW_ARRAY( point_deltas_x, n_points ) || |
| 3968 | FT_NEW_ARRAY( point_deltas_y, n_points ) ) |
| 3969 | goto Fail3; |
| 3970 | |
Behdad Esfahbod | 0f9ddf2 | 2016-07-14 06:08:39 +0200 | [diff] [blame] | 3971 | for ( j = 0; j < n_points; j++ ) |
Werner Lemberg | a632fb5 | 2018-06-24 15:22:10 +0200 | [diff] [blame] | 3972 | { |
| 3973 | points_org[j].x = FT_intToFixed( outline->points[j].x ); |
| 3974 | points_org[j].y = FT_intToFixed( outline->points[j].y ); |
| 3975 | } |
Behdad Esfahbod | 0f9ddf2 | 2016-07-14 06:08:39 +0200 | [diff] [blame] | 3976 | |
Werner Lemberg | 0aa3616 | 2015-03-08 22:50:37 +0100 | [diff] [blame] | 3977 | for ( i = 0; i < ( tupleCount & GX_TC_TUPLE_COUNT_MASK ); i++ ) |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 3978 | { |
| 3979 | FT_UInt tupleDataSize; |
| 3980 | FT_UInt tupleIndex; |
| 3981 | FT_Fixed apply; |
| 3982 | |
| 3983 | |
Werner Lemberg | e9df4e4 | 2015-05-31 12:21:34 +0200 | [diff] [blame] | 3984 | FT_TRACE6(( " tuple %d:\n", i )); |
| 3985 | |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 3986 | tupleDataSize = FT_GET_USHORT(); |
| 3987 | tupleIndex = FT_GET_USHORT(); |
| 3988 | |
| 3989 | if ( tupleIndex & GX_TI_EMBEDDED_TUPLE_COORD ) |
| 3990 | { |
Werner Lemberg | 0aa3616 | 2015-03-08 22:50:37 +0100 | [diff] [blame] | 3991 | for ( j = 0; j < blend->num_axis; j++ ) |
Werner Lemberg | dc39f76 | 2019-05-07 10:09:55 +0200 | [diff] [blame] | 3992 | tuple_coords[j] = FT_fdot14ToFixed( FT_GET_SHORT() ); |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 3993 | } |
| 3994 | else if ( ( tupleIndex & GX_TI_TUPLE_INDEX_MASK ) >= blend->tuplecount ) |
| 3995 | { |
Werner Lemberg | 052f6c5 | 2015-10-13 08:24:32 +0200 | [diff] [blame] | 3996 | FT_TRACE2(( "TT_Vary_Apply_Glyph_Deltas:" |
| 3997 | " invalid tuple index\n" )); |
| 3998 | |
Werner Lemberg | 059bc33 | 2013-03-14 10:27:35 +0100 | [diff] [blame] | 3999 | error = FT_THROW( Invalid_Table ); |
Werner Lemberg | 207ca38 | 2018-06-25 18:50:00 +0200 | [diff] [blame] | 4000 | goto Fail3; |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 4001 | } |
| 4002 | else |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 4003 | FT_MEM_COPY( |
| 4004 | tuple_coords, |
Alexei Podtelezhnikov | 1f43aff | 2018-11-04 13:11:16 -0500 | [diff] [blame] | 4005 | blend->tuplecoords + |
| 4006 | ( tupleIndex & GX_TI_TUPLE_INDEX_MASK ) * blend->num_axis, |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 4007 | blend->num_axis * sizeof ( FT_Fixed ) ); |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 4008 | |
| 4009 | if ( tupleIndex & GX_TI_INTERMEDIATE_TUPLE ) |
| 4010 | { |
Werner Lemberg | 0aa3616 | 2015-03-08 22:50:37 +0100 | [diff] [blame] | 4011 | for ( j = 0; j < blend->num_axis; j++ ) |
Werner Lemberg | dc39f76 | 2019-05-07 10:09:55 +0200 | [diff] [blame] | 4012 | im_start_coords[j] = FT_fdot14ToFixed( FT_GET_SHORT() ); |
Werner Lemberg | 0aa3616 | 2015-03-08 22:50:37 +0100 | [diff] [blame] | 4013 | for ( j = 0; j < blend->num_axis; j++ ) |
Werner Lemberg | dc39f76 | 2019-05-07 10:09:55 +0200 | [diff] [blame] | 4014 | im_end_coords[j] = FT_fdot14ToFixed( FT_GET_SHORT() ); |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 4015 | } |
| 4016 | |
| 4017 | apply = ft_var_apply_tuple( blend, |
Werner Lemberg | 22ad9ef | 2005-05-09 22:11:36 +0000 | [diff] [blame] | 4018 | (FT_UShort)tupleIndex, |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 4019 | tuple_coords, |
| 4020 | im_start_coords, |
| 4021 | im_end_coords ); |
| 4022 | |
| 4023 | if ( apply == 0 ) /* tuple isn't active for our blend */ |
| 4024 | { |
Yamato, Masatake (大和æ£æ¦) | 17f4b8b | 2004-05-07 08:59:29 +0000 | [diff] [blame] | 4025 | offsetToData += tupleDataSize; |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 4026 | continue; |
| 4027 | } |
| 4028 | |
| 4029 | here = FT_Stream_FTell( stream ); |
| 4030 | |
Werner Lemberg | 4e659d7 | 2016-09-03 18:14:00 +0200 | [diff] [blame] | 4031 | FT_Stream_SeekSet( stream, offsetToData ); |
| 4032 | |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 4033 | if ( tupleIndex & GX_TI_PRIVATE_POINT_NUMBERS ) |
| 4034 | { |
Werner Lemberg | 43a96eb | 2015-10-13 11:18:55 +0200 | [diff] [blame] | 4035 | localpoints = ft_var_readpackedpoints( stream, |
| 4036 | blend->gvar_size, |
| 4037 | &point_count ); |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 4038 | points = localpoints; |
| 4039 | } |
| 4040 | else |
| 4041 | { |
| 4042 | points = sharedpoints; |
| 4043 | point_count = spoint_count; |
| 4044 | } |
| 4045 | |
| 4046 | deltas_x = ft_var_readpackeddeltas( stream, |
Werner Lemberg | 43a96eb | 2015-10-13 11:18:55 +0200 | [diff] [blame] | 4047 | blend->gvar_size, |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 4048 | point_count == 0 ? n_points |
| 4049 | : point_count ); |
| 4050 | deltas_y = ft_var_readpackeddeltas( stream, |
Werner Lemberg | 43a96eb | 2015-10-13 11:18:55 +0200 | [diff] [blame] | 4051 | blend->gvar_size, |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 4052 | point_count == 0 ? n_points |
| 4053 | : point_count ); |
| 4054 | |
Werner Lemberg | 4441f7b | 2016-12-26 17:08:17 +0100 | [diff] [blame] | 4055 | if ( !points || !deltas_y || !deltas_x ) |
Werner Lemberg | 3bcad43 | 2004-05-06 11:48:35 +0000 | [diff] [blame] | 4056 | ; /* failure, ignore it */ |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 4057 | |
| 4058 | else if ( points == ALL_POINTS ) |
| 4059 | { |
Werner Lemberg | e9df4e4 | 2015-05-31 12:21:34 +0200 | [diff] [blame] | 4060 | #ifdef FT_DEBUG_LEVEL_TRACE |
| 4061 | int count = 0; |
| 4062 | #endif |
| 4063 | |
| 4064 | |
| 4065 | FT_TRACE7(( " point deltas:\n" )); |
| 4066 | |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 4067 | /* this means that there are deltas for every point in the glyph */ |
Werner Lemberg | 0aa3616 | 2015-03-08 22:50:37 +0100 | [diff] [blame] | 4068 | for ( j = 0; j < n_points; j++ ) |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 4069 | { |
Werner Lemberg | a632fb5 | 2018-06-24 15:22:10 +0200 | [diff] [blame] | 4070 | FT_Fixed old_point_delta_x = point_deltas_x[j]; |
| 4071 | FT_Fixed old_point_delta_y = point_deltas_y[j]; |
| 4072 | |
| 4073 | FT_Fixed point_delta_x = FT_MulFix( deltas_x[j], apply ); |
| 4074 | FT_Fixed point_delta_y = FT_MulFix( deltas_y[j], apply ); |
Werner Lemberg | e9df4e4 | 2015-05-31 12:21:34 +0200 | [diff] [blame] | 4075 | |
| 4076 | |
Jonathan Kew | 361af72 | 2017-12-17 15:07:02 +0100 | [diff] [blame] | 4077 | if ( j < n_points - 4 ) |
Werner Lemberg | d44daf9 | 2016-12-21 23:03:48 +0100 | [diff] [blame] | 4078 | { |
Werner Lemberg | a632fb5 | 2018-06-24 15:22:10 +0200 | [diff] [blame] | 4079 | point_deltas_x[j] = old_point_delta_x + point_delta_x; |
| 4080 | point_deltas_y[j] = old_point_delta_y + point_delta_y; |
Werner Lemberg | d44daf9 | 2016-12-21 23:03:48 +0100 | [diff] [blame] | 4081 | } |
| 4082 | else |
| 4083 | { |
| 4084 | /* To avoid double adjustment of advance width or height, */ |
| 4085 | /* adjust phantom points only if there is no HVAR or VVAR */ |
| 4086 | /* support, respectively. */ |
Jonathan Kew | 361af72 | 2017-12-17 15:07:02 +0100 | [diff] [blame] | 4087 | if ( j == ( n_points - 4 ) && |
| 4088 | !( face->variation_support & |
| 4089 | TT_FACE_FLAG_VAR_LSB ) ) |
Werner Lemberg | a632fb5 | 2018-06-24 15:22:10 +0200 | [diff] [blame] | 4090 | point_deltas_x[j] = old_point_delta_x + point_delta_x; |
Jonathan Kew | 361af72 | 2017-12-17 15:07:02 +0100 | [diff] [blame] | 4091 | |
| 4092 | else if ( j == ( n_points - 3 ) && |
| 4093 | !( face->variation_support & |
| 4094 | TT_FACE_FLAG_VAR_HADVANCE ) ) |
Werner Lemberg | a632fb5 | 2018-06-24 15:22:10 +0200 | [diff] [blame] | 4095 | point_deltas_x[j] = old_point_delta_x + point_delta_x; |
Werner Lemberg | 3bd79cc | 2016-12-15 14:34:57 +0100 | [diff] [blame] | 4096 | |
Werner Lemberg | 7209110 | 2016-12-21 23:46:29 +0100 | [diff] [blame] | 4097 | else if ( j == ( n_points - 2 ) && |
Werner Lemberg | d44daf9 | 2016-12-21 23:03:48 +0100 | [diff] [blame] | 4098 | !( face->variation_support & |
Jonathan Kew | 361af72 | 2017-12-17 15:07:02 +0100 | [diff] [blame] | 4099 | TT_FACE_FLAG_VAR_TSB ) ) |
Werner Lemberg | a632fb5 | 2018-06-24 15:22:10 +0200 | [diff] [blame] | 4100 | point_deltas_y[j] = old_point_delta_y + point_delta_y; |
Werner Lemberg | d44daf9 | 2016-12-21 23:03:48 +0100 | [diff] [blame] | 4101 | |
Werner Lemberg | 7209110 | 2016-12-21 23:46:29 +0100 | [diff] [blame] | 4102 | else if ( j == ( n_points - 1 ) && |
Werner Lemberg | d44daf9 | 2016-12-21 23:03:48 +0100 | [diff] [blame] | 4103 | !( face->variation_support & |
| 4104 | TT_FACE_FLAG_VAR_VADVANCE ) ) |
Werner Lemberg | a632fb5 | 2018-06-24 15:22:10 +0200 | [diff] [blame] | 4105 | point_deltas_y[j] = old_point_delta_y + point_delta_y; |
Werner Lemberg | d44daf9 | 2016-12-21 23:03:48 +0100 | [diff] [blame] | 4106 | } |
Werner Lemberg | e9df4e4 | 2015-05-31 12:21:34 +0200 | [diff] [blame] | 4107 | |
| 4108 | #ifdef FT_DEBUG_LEVEL_TRACE |
Werner Lemberg | a632fb5 | 2018-06-24 15:22:10 +0200 | [diff] [blame] | 4109 | if ( point_delta_x || point_delta_y ) |
Werner Lemberg | e9df4e4 | 2015-05-31 12:21:34 +0200 | [diff] [blame] | 4110 | { |
Werner Lemberg | a632fb5 | 2018-06-24 15:22:10 +0200 | [diff] [blame] | 4111 | FT_TRACE7(( " %d: (%f, %f) -> (%f, %f)\n", |
Werner Lemberg | e9df4e4 | 2015-05-31 12:21:34 +0200 | [diff] [blame] | 4112 | j, |
Werner Lemberg | a632fb5 | 2018-06-24 15:22:10 +0200 | [diff] [blame] | 4113 | ( FT_intToFixed( outline->points[j].x ) + |
| 4114 | old_point_delta_x ) / 65536.0, |
| 4115 | ( FT_intToFixed( outline->points[j].y ) + |
| 4116 | old_point_delta_y ) / 65536.0, |
| 4117 | ( FT_intToFixed( outline->points[j].x ) + |
| 4118 | point_deltas_x[j] ) / 65536.0, |
| 4119 | ( FT_intToFixed( outline->points[j].y ) + |
| 4120 | point_deltas_y[j] ) / 65536.0 )); |
Werner Lemberg | e9df4e4 | 2015-05-31 12:21:34 +0200 | [diff] [blame] | 4121 | count++; |
| 4122 | } |
| 4123 | #endif |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 4124 | } |
Werner Lemberg | e9df4e4 | 2015-05-31 12:21:34 +0200 | [diff] [blame] | 4125 | |
| 4126 | #ifdef FT_DEBUG_LEVEL_TRACE |
| 4127 | if ( !count ) |
| 4128 | FT_TRACE7(( " none\n" )); |
| 4129 | #endif |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 4130 | } |
| 4131 | |
| 4132 | else |
| 4133 | { |
Werner Lemberg | e9df4e4 | 2015-05-31 12:21:34 +0200 | [diff] [blame] | 4134 | #ifdef FT_DEBUG_LEVEL_TRACE |
| 4135 | int count = 0; |
| 4136 | #endif |
| 4137 | |
| 4138 | |
| 4139 | /* we have to interpolate the missing deltas similar to the */ |
| 4140 | /* IUP bytecode instruction */ |
| 4141 | for ( j = 0; j < n_points; j++ ) |
Werner Lemberg | f147fb2 | 2016-07-16 07:06:21 +0200 | [diff] [blame] | 4142 | { |
Werner Lemberg | e9df4e4 | 2015-05-31 12:21:34 +0200 | [diff] [blame] | 4143 | has_delta[j] = FALSE; |
Werner Lemberg | f147fb2 | 2016-07-16 07:06:21 +0200 | [diff] [blame] | 4144 | points_out[j] = points_org[j]; |
| 4145 | } |
Werner Lemberg | e9df4e4 | 2015-05-31 12:21:34 +0200 | [diff] [blame] | 4146 | |
Werner Lemberg | 0aa3616 | 2015-03-08 22:50:37 +0100 | [diff] [blame] | 4147 | for ( j = 0; j < point_count; j++ ) |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 4148 | { |
Werner Lemberg | 4e659d7 | 2016-09-03 18:14:00 +0200 | [diff] [blame] | 4149 | FT_UShort idx = points[j]; |
Werner Lemberg | e9df4e4 | 2015-05-31 12:21:34 +0200 | [diff] [blame] | 4150 | |
| 4151 | |
| 4152 | if ( idx >= n_points ) |
Werner Lemberg | 9c98fbf | 2011-10-01 09:25:55 +0200 | [diff] [blame] | 4153 | continue; |
| 4154 | |
Werner Lemberg | e9df4e4 | 2015-05-31 12:21:34 +0200 | [diff] [blame] | 4155 | has_delta[idx] = TRUE; |
| 4156 | |
Werner Lemberg | f147fb2 | 2016-07-16 07:06:21 +0200 | [diff] [blame] | 4157 | points_out[idx].x += FT_MulFix( deltas_x[j], apply ); |
| 4158 | points_out[idx].y += FT_MulFix( deltas_y[j], apply ); |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 4159 | } |
Werner Lemberg | e9df4e4 | 2015-05-31 12:21:34 +0200 | [diff] [blame] | 4160 | |
| 4161 | /* no need to handle phantom points here, */ |
| 4162 | /* since solitary points can't be interpolated */ |
Werner Lemberg | f147fb2 | 2016-07-16 07:06:21 +0200 | [diff] [blame] | 4163 | tt_interpolate_deltas( outline, |
| 4164 | points_out, |
| 4165 | points_org, |
| 4166 | has_delta ); |
| 4167 | |
Werner Lemberg | e9df4e4 | 2015-05-31 12:21:34 +0200 | [diff] [blame] | 4168 | FT_TRACE7(( " point deltas:\n" )); |
| 4169 | |
Werner Lemberg | a3b6125 | 2016-07-16 08:16:16 +0200 | [diff] [blame] | 4170 | for ( j = 0; j < n_points; j++ ) |
Werner Lemberg | e9df4e4 | 2015-05-31 12:21:34 +0200 | [diff] [blame] | 4171 | { |
Werner Lemberg | a632fb5 | 2018-06-24 15:22:10 +0200 | [diff] [blame] | 4172 | FT_Fixed old_point_delta_x = point_deltas_x[j]; |
| 4173 | FT_Fixed old_point_delta_y = point_deltas_y[j]; |
| 4174 | |
| 4175 | FT_Pos point_delta_x = points_out[j].x - points_org[j].x; |
| 4176 | FT_Pos point_delta_y = points_out[j].y - points_org[j].y; |
Werner Lemberg | a3b6125 | 2016-07-16 08:16:16 +0200 | [diff] [blame] | 4177 | |
| 4178 | |
Werner Lemberg | e7935f2 | 2017-12-18 07:29:57 +0100 | [diff] [blame] | 4179 | if ( j < n_points - 4 ) |
| 4180 | { |
Werner Lemberg | a632fb5 | 2018-06-24 15:22:10 +0200 | [diff] [blame] | 4181 | point_deltas_x[j] = old_point_delta_x + point_delta_x; |
| 4182 | point_deltas_y[j] = old_point_delta_y + point_delta_y; |
Werner Lemberg | e7935f2 | 2017-12-18 07:29:57 +0100 | [diff] [blame] | 4183 | } |
| 4184 | else |
| 4185 | { |
| 4186 | /* To avoid double adjustment of advance width or height, */ |
| 4187 | /* adjust phantom points only if there is no HVAR or VVAR */ |
| 4188 | /* support, respectively. */ |
| 4189 | if ( j == ( n_points - 4 ) && |
| 4190 | !( face->variation_support & |
| 4191 | TT_FACE_FLAG_VAR_LSB ) ) |
Werner Lemberg | a632fb5 | 2018-06-24 15:22:10 +0200 | [diff] [blame] | 4192 | point_deltas_x[j] = old_point_delta_x + point_delta_x; |
Werner Lemberg | e7935f2 | 2017-12-18 07:29:57 +0100 | [diff] [blame] | 4193 | |
| 4194 | else if ( j == ( n_points - 3 ) && |
| 4195 | !( face->variation_support & |
| 4196 | TT_FACE_FLAG_VAR_HADVANCE ) ) |
Werner Lemberg | a632fb5 | 2018-06-24 15:22:10 +0200 | [diff] [blame] | 4197 | point_deltas_x[j] = old_point_delta_x + point_delta_x; |
Werner Lemberg | e7935f2 | 2017-12-18 07:29:57 +0100 | [diff] [blame] | 4198 | |
| 4199 | else if ( j == ( n_points - 2 ) && |
| 4200 | !( face->variation_support & |
| 4201 | TT_FACE_FLAG_VAR_TSB ) ) |
Werner Lemberg | a632fb5 | 2018-06-24 15:22:10 +0200 | [diff] [blame] | 4202 | point_deltas_y[j] = old_point_delta_y + point_delta_y; |
Werner Lemberg | e7935f2 | 2017-12-18 07:29:57 +0100 | [diff] [blame] | 4203 | |
| 4204 | else if ( j == ( n_points - 1 ) && |
| 4205 | !( face->variation_support & |
| 4206 | TT_FACE_FLAG_VAR_VADVANCE ) ) |
Werner Lemberg | a632fb5 | 2018-06-24 15:22:10 +0200 | [diff] [blame] | 4207 | point_deltas_y[j] = old_point_delta_y + point_delta_y; |
Werner Lemberg | e7935f2 | 2017-12-18 07:29:57 +0100 | [diff] [blame] | 4208 | } |
Werner Lemberg | a3b6125 | 2016-07-16 08:16:16 +0200 | [diff] [blame] | 4209 | |
| 4210 | #ifdef FT_DEBUG_LEVEL_TRACE |
Werner Lemberg | a632fb5 | 2018-06-24 15:22:10 +0200 | [diff] [blame] | 4211 | if ( point_delta_x || point_delta_y ) |
Werner Lemberg | e9df4e4 | 2015-05-31 12:21:34 +0200 | [diff] [blame] | 4212 | { |
Werner Lemberg | a632fb5 | 2018-06-24 15:22:10 +0200 | [diff] [blame] | 4213 | FT_TRACE7(( " %d: (%f, %f) -> (%f, %f)\n", |
Werner Lemberg | e9df4e4 | 2015-05-31 12:21:34 +0200 | [diff] [blame] | 4214 | j, |
Werner Lemberg | a632fb5 | 2018-06-24 15:22:10 +0200 | [diff] [blame] | 4215 | ( FT_intToFixed( outline->points[j].x ) + |
| 4216 | old_point_delta_x ) / 65536.0, |
| 4217 | ( FT_intToFixed( outline->points[j].y ) + |
| 4218 | old_point_delta_y ) / 65536.0, |
| 4219 | ( FT_intToFixed( outline->points[j].x ) + |
| 4220 | point_deltas_x[j] ) / 65536.0, |
| 4221 | ( FT_intToFixed( outline->points[j].y ) + |
| 4222 | point_deltas_y[j] ) / 65536.0 )); |
Werner Lemberg | e9df4e4 | 2015-05-31 12:21:34 +0200 | [diff] [blame] | 4223 | count++; |
| 4224 | } |
Werner Lemberg | a3b6125 | 2016-07-16 08:16:16 +0200 | [diff] [blame] | 4225 | #endif |
Werner Lemberg | e9df4e4 | 2015-05-31 12:21:34 +0200 | [diff] [blame] | 4226 | } |
| 4227 | |
Werner Lemberg | a3b6125 | 2016-07-16 08:16:16 +0200 | [diff] [blame] | 4228 | #ifdef FT_DEBUG_LEVEL_TRACE |
Werner Lemberg | e9df4e4 | 2015-05-31 12:21:34 +0200 | [diff] [blame] | 4229 | if ( !count ) |
| 4230 | FT_TRACE7(( " none\n" )); |
| 4231 | #endif |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 4232 | } |
| 4233 | |
| 4234 | if ( localpoints != ALL_POINTS ) |
| 4235 | FT_FREE( localpoints ); |
| 4236 | FT_FREE( deltas_x ); |
| 4237 | FT_FREE( deltas_y ); |
| 4238 | |
Yamato, Masatake (大和æ£æ¦) | 17f4b8b | 2004-05-07 08:59:29 +0000 | [diff] [blame] | 4239 | offsetToData += tupleDataSize; |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 4240 | |
| 4241 | FT_Stream_SeekSet( stream, here ); |
| 4242 | } |
| 4243 | |
Werner Lemberg | e9df4e4 | 2015-05-31 12:21:34 +0200 | [diff] [blame] | 4244 | FT_TRACE5(( "\n" )); |
| 4245 | |
Werner Lemberg | a632fb5 | 2018-06-24 15:22:10 +0200 | [diff] [blame] | 4246 | for ( i = 0; i < n_points; i++ ) |
| 4247 | { |
Werner Lemberg | 306d2f6 | 2019-05-23 14:41:57 +0200 | [diff] [blame] | 4248 | unrounded[i].x += FT_fixedToFdot6( point_deltas_x[i] ); |
| 4249 | unrounded[i].y += FT_fixedToFdot6( point_deltas_y[i] ); |
Werner Lemberg | 1178227 | 2019-05-11 09:29:19 +0200 | [diff] [blame] | 4250 | |
Werner Lemberg | a632fb5 | 2018-06-24 15:22:10 +0200 | [diff] [blame] | 4251 | outline->points[i].x += FT_fixedToInt( point_deltas_x[i] ); |
| 4252 | outline->points[i].y += FT_fixedToInt( point_deltas_y[i] ); |
| 4253 | } |
| 4254 | |
| 4255 | Fail3: |
| 4256 | FT_FREE( point_deltas_x ); |
| 4257 | FT_FREE( point_deltas_y ); |
| 4258 | |
Werner Lemberg | e9df4e4 | 2015-05-31 12:21:34 +0200 | [diff] [blame] | 4259 | Fail2: |
Werner Lemberg | 7ef0d86 | 2015-10-13 08:14:20 +0200 | [diff] [blame] | 4260 | if ( sharedpoints != ALL_POINTS ) |
| 4261 | FT_FREE( sharedpoints ); |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 4262 | FT_FREE( tuple_coords ); |
| 4263 | FT_FREE( im_start_coords ); |
| 4264 | FT_FREE( im_end_coords ); |
| 4265 | |
Werner Lemberg | 3bcad43 | 2004-05-06 11:48:35 +0000 | [diff] [blame] | 4266 | FT_FRAME_EXIT(); |
| 4267 | |
| 4268 | Fail1: |
Werner Lemberg | e9df4e4 | 2015-05-31 12:21:34 +0200 | [diff] [blame] | 4269 | FT_FREE( points_org ); |
Werner Lemberg | f147fb2 | 2016-07-16 07:06:21 +0200 | [diff] [blame] | 4270 | FT_FREE( points_out ); |
Werner Lemberg | e9df4e4 | 2015-05-31 12:21:34 +0200 | [diff] [blame] | 4271 | FT_FREE( has_delta ); |
Werner Lemberg | 3bcad43 | 2004-05-06 11:48:35 +0000 | [diff] [blame] | 4272 | |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 4273 | return error; |
| 4274 | } |
| 4275 | |
| 4276 | |
Werner Lemberg | 9ac9060 | 2018-06-03 09:01:17 +0200 | [diff] [blame] | 4277 | /************************************************************************** |
| 4278 | * |
| 4279 | * @Function: |
| 4280 | * tt_get_var_blend |
| 4281 | * |
| 4282 | * @Description: |
| 4283 | * An extended internal version of `TT_Get_MM_Blend' that returns |
| 4284 | * pointers instead of copying data, without any initialization of |
| 4285 | * the MM machinery in case it isn't loaded yet. |
| 4286 | */ |
Werner Lemberg | 8b174b4 | 2016-12-11 09:16:52 +0100 | [diff] [blame] | 4287 | FT_LOCAL_DEF( FT_Error ) |
Werner Lemberg | a8652c5 | 2016-12-18 18:12:03 +0100 | [diff] [blame] | 4288 | tt_get_var_blend( TT_Face face, |
| 4289 | FT_UInt *num_coords, |
| 4290 | FT_Fixed* *coords, |
Werner Lemberg | 5eb0fd5 | 2017-03-12 20:46:56 +0100 | [diff] [blame] | 4291 | FT_Fixed* *normalizedcoords, |
Werner Lemberg | a8652c5 | 2016-12-18 18:12:03 +0100 | [diff] [blame] | 4292 | FT_MM_Var* *mm_var ) |
Werner Lemberg | 8b174b4 | 2016-12-11 09:16:52 +0100 | [diff] [blame] | 4293 | { |
Werner Lemberg | 8b174b4 | 2016-12-11 09:16:52 +0100 | [diff] [blame] | 4294 | if ( face->blend ) |
| 4295 | { |
Werner Lemberg | a8652c5 | 2016-12-18 18:12:03 +0100 | [diff] [blame] | 4296 | if ( num_coords ) |
Werner Lemberg | 5eb0fd5 | 2017-03-12 20:46:56 +0100 | [diff] [blame] | 4297 | *num_coords = face->blend->num_axis; |
Werner Lemberg | a8652c5 | 2016-12-18 18:12:03 +0100 | [diff] [blame] | 4298 | if ( coords ) |
Werner Lemberg | 5eb0fd5 | 2017-03-12 20:46:56 +0100 | [diff] [blame] | 4299 | *coords = face->blend->coords; |
| 4300 | if ( normalizedcoords ) |
| 4301 | *normalizedcoords = face->blend->normalizedcoords; |
Werner Lemberg | a8652c5 | 2016-12-18 18:12:03 +0100 | [diff] [blame] | 4302 | if ( mm_var ) |
Werner Lemberg | 5eb0fd5 | 2017-03-12 20:46:56 +0100 | [diff] [blame] | 4303 | *mm_var = face->blend->mmvar; |
Werner Lemberg | 8b174b4 | 2016-12-11 09:16:52 +0100 | [diff] [blame] | 4304 | } |
| 4305 | else |
| 4306 | { |
Werner Lemberg | a8652c5 | 2016-12-18 18:12:03 +0100 | [diff] [blame] | 4307 | if ( num_coords ) |
| 4308 | *num_coords = 0; |
| 4309 | if ( coords ) |
| 4310 | *coords = NULL; |
| 4311 | if ( mm_var ) |
| 4312 | *mm_var = NULL; |
Werner Lemberg | 8b174b4 | 2016-12-11 09:16:52 +0100 | [diff] [blame] | 4313 | } |
| 4314 | |
| 4315 | return FT_Err_Ok; |
| 4316 | } |
| 4317 | |
| 4318 | |
Werner Lemberg | 0291913 | 2017-01-07 07:45:28 +0100 | [diff] [blame] | 4319 | static void |
| 4320 | ft_var_done_item_variation_store( TT_Face face, |
| 4321 | GX_ItemVarStore itemStore ) |
| 4322 | { |
| 4323 | FT_Memory memory = FT_FACE_MEMORY( face ); |
| 4324 | FT_UInt i; |
| 4325 | |
| 4326 | |
| 4327 | if ( itemStore->varData ) |
| 4328 | { |
| 4329 | for ( i = 0; i < itemStore->dataCount; i++ ) |
| 4330 | { |
| 4331 | FT_FREE( itemStore->varData[i].regionIndices ); |
| 4332 | FT_FREE( itemStore->varData[i].deltaSet ); |
| 4333 | } |
| 4334 | |
| 4335 | FT_FREE( itemStore->varData ); |
| 4336 | } |
| 4337 | |
| 4338 | if ( itemStore->varRegionList ) |
| 4339 | { |
| 4340 | for ( i = 0; i < itemStore->regionCount; i++ ) |
| 4341 | FT_FREE( itemStore->varRegionList[i].axisList ); |
| 4342 | |
| 4343 | FT_FREE( itemStore->varRegionList ); |
| 4344 | } |
| 4345 | } |
| 4346 | |
| 4347 | |
Werner Lemberg | 9ac9060 | 2018-06-03 09:01:17 +0200 | [diff] [blame] | 4348 | /************************************************************************** |
| 4349 | * |
| 4350 | * @Function: |
| 4351 | * tt_done_blend |
| 4352 | * |
| 4353 | * @Description: |
| 4354 | * Free the blend internal data structure. |
| 4355 | */ |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 4356 | FT_LOCAL_DEF( void ) |
Werner Lemberg | 27bdb36 | 2016-12-10 09:56:03 +0100 | [diff] [blame] | 4357 | tt_done_blend( TT_Face face ) |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 4358 | { |
Werner Lemberg | 27bdb36 | 2016-12-10 09:56:03 +0100 | [diff] [blame] | 4359 | FT_Memory memory = FT_FACE_MEMORY( face ); |
| 4360 | GX_Blend blend = face->blend; |
| 4361 | |
| 4362 | |
Werner Lemberg | 4441f7b | 2016-12-26 17:08:17 +0100 | [diff] [blame] | 4363 | if ( blend ) |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 4364 | { |
Werner Lemberg | 9228122 | 2016-10-11 07:12:12 +0200 | [diff] [blame] | 4365 | FT_UInt i, num_axes; |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 4366 | |
| 4367 | |
Werner Lemberg | 9228122 | 2016-10-11 07:12:12 +0200 | [diff] [blame] | 4368 | /* blend->num_axis might not be set up yet */ |
| 4369 | num_axes = blend->mmvar->num_axis; |
| 4370 | |
Werner Lemberg | 5eb0fd5 | 2017-03-12 20:46:56 +0100 | [diff] [blame] | 4371 | FT_FREE( blend->coords ); |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 4372 | FT_FREE( blend->normalizedcoords ); |
Werner Lemberg | 27fee7f | 2017-03-06 20:45:44 +0100 | [diff] [blame] | 4373 | FT_FREE( blend->normalized_stylecoords ); |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 4374 | FT_FREE( blend->mmvar ); |
| 4375 | |
Werner Lemberg | 4441f7b | 2016-12-26 17:08:17 +0100 | [diff] [blame] | 4376 | if ( blend->avar_segment ) |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 4377 | { |
Werner Lemberg | 9228122 | 2016-10-11 07:12:12 +0200 | [diff] [blame] | 4378 | for ( i = 0; i < num_axes; i++ ) |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 4379 | FT_FREE( blend->avar_segment[i].correspondence ); |
| 4380 | FT_FREE( blend->avar_segment ); |
| 4381 | } |
| 4382 | |
Werner Lemberg | 4441f7b | 2016-12-26 17:08:17 +0100 | [diff] [blame] | 4383 | if ( blend->hvar_table ) |
Dave Arnold | 097cd87 | 2016-12-15 12:58:26 +0100 | [diff] [blame] | 4384 | { |
Werner Lemberg | 0291913 | 2017-01-07 07:45:28 +0100 | [diff] [blame] | 4385 | ft_var_done_item_variation_store( face, |
| 4386 | &blend->hvar_table->itemStore ); |
Dave Arnold | 097cd87 | 2016-12-15 12:58:26 +0100 | [diff] [blame] | 4387 | |
| 4388 | FT_FREE( blend->hvar_table->widthMap.innerIndex ); |
| 4389 | FT_FREE( blend->hvar_table->widthMap.outerIndex ); |
| 4390 | FT_FREE( blend->hvar_table ); |
| 4391 | } |
| 4392 | |
Werner Lemberg | d9ff6f2 | 2017-03-16 20:20:51 +0100 | [diff] [blame] | 4393 | if ( blend->vvar_table ) |
| 4394 | { |
| 4395 | ft_var_done_item_variation_store( face, |
| 4396 | &blend->vvar_table->itemStore ); |
| 4397 | |
| 4398 | FT_FREE( blend->vvar_table->widthMap.innerIndex ); |
| 4399 | FT_FREE( blend->vvar_table->widthMap.outerIndex ); |
| 4400 | FT_FREE( blend->vvar_table ); |
| 4401 | } |
| 4402 | |
Werner Lemberg | 07ee1d2 | 2017-01-11 12:50:51 +0100 | [diff] [blame] | 4403 | if ( blend->mvar_table ) |
| 4404 | { |
| 4405 | ft_var_done_item_variation_store( face, |
| 4406 | &blend->mvar_table->itemStore ); |
| 4407 | |
| 4408 | FT_FREE( blend->mvar_table->values ); |
| 4409 | FT_FREE( blend->mvar_table ); |
| 4410 | } |
| 4411 | |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 4412 | FT_FREE( blend->tuplecoords ); |
| 4413 | FT_FREE( blend->glyphoffsets ); |
| 4414 | FT_FREE( blend ); |
| 4415 | } |
| 4416 | } |
| 4417 | |
Werner Lemberg | 9931175 | 2017-03-18 07:06:49 +0100 | [diff] [blame] | 4418 | #else /* !TT_CONFIG_OPTION_GX_VAR_SUPPORT */ |
| 4419 | |
| 4420 | /* ANSI C doesn't like empty source files */ |
| 4421 | typedef int _tt_gxvar_dummy; |
| 4422 | |
| 4423 | #endif /* !TT_CONFIG_OPTION_GX_VAR_SUPPORT */ |
Werner Lemberg | 44bb303 | 2004-04-25 20:15:11 +0000 | [diff] [blame] | 4424 | |
| 4425 | |
| 4426 | /* END */ |