summaryrefslogtreecommitdiffstats
path: root/modules/freetype2/ChangeLog.27
blob: 0e82b2fb398d4da88c447a27867a6172cbc08e00 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
1209
1210
1211
1212
1213
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233
1234
1235
1236
1237
1238
1239
1240
1241
1242
1243
1244
1245
1246
1247
1248
1249
1250
1251
1252
1253
1254
1255
1256
1257
1258
1259
1260
1261
1262
1263
1264
1265
1266
1267
1268
1269
1270
1271
1272
1273
1274
1275
1276
1277
1278
1279
1280
1281
1282
1283
1284
1285
1286
1287
1288
1289
1290
1291
1292
1293
1294
1295
1296
1297
1298
1299
1300
1301
1302
1303
1304
1305
1306
1307
1308
1309
1310
1311
1312
1313
1314
1315
1316
1317
1318
1319
1320
1321
1322
1323
1324
1325
1326
1327
1328
1329
1330
1331
1332
1333
1334
1335
1336
1337
1338
1339
1340
1341
1342
1343
1344
1345
1346
1347
1348
1349
1350
1351
1352
1353
1354
1355
1356
1357
1358
1359
1360
1361
1362
1363
1364
1365
1366
1367
1368
1369
1370
1371
1372
1373
1374
1375
1376
1377
1378
1379
1380
1381
1382
1383
1384
1385
1386
1387
1388
1389
1390
1391
1392
1393
1394
1395
1396
1397
1398
1399
1400
1401
1402
1403
1404
1405
1406
1407
1408
1409
1410
1411
1412
1413
1414
1415
1416
1417
1418
1419
1420
1421
1422
1423
1424
1425
1426
1427
1428
1429
1430
1431
1432
1433
1434
1435
1436
1437
1438
1439
1440
1441
1442
1443
1444
1445
1446
1447
1448
1449
1450
1451
1452
1453
1454
1455
1456
1457
1458
1459
1460
1461
1462
1463
1464
1465
1466
1467
1468
1469
1470
1471
1472
1473
1474
1475
1476
1477
1478
1479
1480
1481
1482
1483
1484
1485
1486
1487
1488
1489
1490
1491
1492
1493
1494
1495
1496
1497
1498
1499
1500
1501
1502
1503
1504
1505
1506
1507
1508
1509
1510
1511
1512
1513
1514
1515
1516
1517
1518
1519
1520
1521
1522
1523
1524
1525
1526
1527
1528
1529
1530
1531
1532
1533
1534
1535
1536
1537
1538
1539
1540
1541
1542
1543
1544
1545
1546
1547
1548
1549
1550
1551
1552
1553
1554
1555
1556
1557
1558
1559
1560
1561
1562
1563
1564
1565
1566
1567
1568
1569
1570
1571
1572
1573
1574
1575
1576
1577
1578
1579
1580
1581
1582
1583
1584
1585
1586
1587
1588
1589
1590
1591
1592
1593
1594
1595
1596
1597
1598
1599
1600
1601
1602
1603
1604
1605
1606
1607
1608
1609
1610
1611
1612
1613
1614
1615
1616
1617
1618
1619
1620
1621
1622
1623
1624
1625
1626
1627
1628
1629
1630
1631
1632
1633
1634
1635
1636
1637
1638
1639
1640
1641
1642
1643
1644
1645
1646
1647
1648
1649
1650
1651
1652
1653
1654
1655
1656
1657
1658
1659
1660
1661
1662
1663
1664
1665
1666
1667
1668
1669
1670
1671
1672
1673
1674
1675
1676
1677
1678
1679
1680
1681
1682
1683
1684
1685
1686
1687
1688
1689
1690
1691
1692
1693
1694
1695
1696
1697
1698
1699
1700
1701
1702
1703
1704
1705
1706
1707
1708
1709
1710
1711
1712
1713
1714
1715
1716
1717
1718
1719
1720
1721
1722
1723
1724
1725
1726
1727
1728
1729
1730
1731
1732
1733
1734
1735
1736
1737
1738
1739
1740
1741
1742
1743
1744
1745
1746
1747
1748
1749
1750
1751
1752
1753
1754
1755
1756
1757
1758
1759
1760
1761
1762
1763
1764
1765
1766
1767
1768
1769
1770
1771
1772
1773
1774
1775
1776
1777
1778
1779
1780
1781
1782
1783
1784
1785
1786
1787
1788
1789
1790
1791
1792
1793
1794
1795
1796
1797
1798
1799
1800
1801
1802
1803
1804
1805
1806
1807
1808
1809
1810
1811
1812
1813
1814
1815
1816
1817
1818
1819
1820
1821
1822
1823
1824
1825
1826
1827
1828
1829
1830
1831
1832
1833
1834
1835
1836
1837
1838
1839
1840
1841
1842
1843
1844
1845
1846
1847
1848
1849
1850
1851
1852
1853
1854
1855
1856
1857
1858
1859
1860
1861
1862
1863
1864
1865
1866
1867
1868
1869
1870
1871
1872
1873
1874
1875
1876
1877
1878
1879
1880
1881
1882
1883
1884
1885
1886
1887
1888
1889
1890
1891
1892
1893
1894
1895
1896
1897
1898
1899
1900
1901
1902
1903
1904
1905
1906
1907
1908
1909
1910
1911
1912
1913
1914
1915
1916
1917
1918
1919
1920
1921
1922
1923
1924
1925
1926
1927
1928
1929
1930
1931
1932
1933
1934
1935
1936
1937
1938
1939
1940
1941
1942
1943
1944
1945
1946
1947
1948
1949
1950
1951
1952
1953
1954
1955
1956
1957
1958
1959
1960
1961
1962
1963
1964
1965
1966
1967
1968
1969
1970
1971
1972
1973
1974
1975
1976
1977
1978
1979
1980
1981
1982
1983
1984
1985
1986
1987
1988
1989
1990
1991
1992
1993
1994
1995
1996
1997
1998
1999
2000
2001
2002
2003
2004
2005
2006
2007
2008
2009
2010
2011
2012
2013
2014
2015
2016
2017
2018
2019
2020
2021
2022
2023
2024
2025
2026
2027
2028
2029
2030
2031
2032
2033
2034
2035
2036
2037
2038
2039
2040
2041
2042
2043
2044
2045
2046
2047
2048
2049
2050
2051
2052
2053
2054
2055
2056
2057
2058
2059
2060
2061
2062
2063
2064
2065
2066
2067
2068
2069
2070
2071
2072
2073
2074
2075
2076
2077
2078
2079
2080
2081
2082
2083
2084
2085
2086
2087
2088
2089
2090
2091
2092
2093
2094
2095
2096
2097
2098
2099
2100
2101
2102
2103
2104
2105
2106
2016-12-30  Werner Lemberg  <wl@gnu.org>

	* Version 2.7.1 released.
	=========================


	Tag sources with `VER-2-7-1'.

	* docs/VERSION.TXT: Add entry for version 2.7.1.

	* README, Jamfile (RefDoc), builds/windows/vc2005/freetype.vcproj,
	builds/windows/vc2005/index.html,
	builds/windows/vc2008/freetype.vcproj,
	builds/windows/vc2008/index.html,
	builds/windows/vc2010/freetype.vcxproj,
	builds/windows/vc2010/index.html,
	builds/windows/visualc/freetype.dsp,
	builds/windows/visualc/freetype.vcproj,
	builds/windows/visualc/index.html,
	builds/windows/visualce/freetype.dsp,
	builds/windows/visualce/freetype.vcproj,
	builds/windows/visualce/index.html,
	builds/wince/vc2005-ce/freetype.vcproj,
	builds/wince/vc2005-ce/index.html,
	builds/wince/vc2008-ce/freetype.vcproj,
	builds/wince/vc2008-ce/index.html: s/2.7/2.7.1/, s/27/271/.

	* include/freetype/freetype.h (FREETYPE_PATCH): Set to 1.

	* builds/unix/configure.raw (version_info): Set to 19:0:13.
	* CMakeLists.txt (VERSION_PATCH): Set to 1.

2016-12-30  Werner Lemberg  <wl@gnu.org>

	[ftfuzzer] Replace `rand' with an xorshift algorithm.

	* src/tools/ftfuzzer/ftfuzzer.cc: Don't include `stdlib.h'.
	(Random): Implement and use a 32bit `xorshift' algorithm.

2016-12-30  Werner Lemberg  <wl@gnu.org>

	[ftfuzzer] Restrict number of tested bitmap strikes.

	Malformed fonts often have large values for the number of bitmap
	strikes, and FreeType doesn't check the validity of all bitmap
	strikes in advance.

	Reported as

	  https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=353

	* src/tools/ftfuzzer/ftfuzzer.cc: Include `stdlib.h' for `rand'.
	(Random): Small class to provide n randomly selected numbers
	(without repetition) out of the value set [1,N].
	(LLVMFuzzerTestOneInput): Use it to test only up to 10 bitmap
	strikes.

2016-12-29  Werner Lemberg  <wl@gnu.org>

	[truetype] Variation font API stability issues.

	Make some functions work before a call to `TT_Set_MM_Blend'.

	* src/truetype/ttgxvar.c (tt_hadvance_adjust): Exit immediately if
	we don't blend.
	(TT_Get_MM_Blend, TT_Get_Var_Design): Return default values if we
	don't blend.

2016-12-29  Werner Lemberg  <wl@gnu.org>

	* src/truetype/ttgxvar.c (TT_Get_MM_Var): Check axis data.

	Reported as

	  https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=348

2016-12-29  Werner Lemberg  <wl@gnu.org>

	[truetype] Tracing fixes.

	* src/truetype/ttgxvar.c (tt_hadvance_adjust): Emit correct
	information.
	(TT_Set_Var_Design): Fix typo.
	(TT_Get_Var_Design): Fix typos.

2016-12-29  Werner Lemberg  <wl@gnu.org>

	*/*: Use `0.5f' for tracing 16.16 numbers.

2016-12-29  Werner Lemberg  <wl@gnu.org>

	[pcf] Protect against gzip bombs.

	Fix suggested by Kostya; reported as

	  https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=345

	* src/pcf/pcfread.c (pcf_read_TOC): Limit number of TOC entries to
	1024.

2016-12-28  Werner Lemberg  <wl@gnu.org>

	[psnames] Only declare, not define, data in `pstables.h' (#49949).

	Pdfium includes `pstables.h' a second time; moving the definition
	from `pstables.h' to `psmodule.c' saves more than 60kByte data
	segment space for this case.

	* src/tools/glnames.py (StringTable::dump,
	StringTable::dump_sublist, dump_encoding, dump_array): Emit
	additional code to only define tables if `DEFINE_PS_TABLES' is set.

	* src/psnames/pstables.h: Regenerated.
	* src/psnames/psmodule.c (DEFINE_PS_TABLES): Define.

2016-12-28  Werner Lemberg  <wl@gnu.org>

	[cff] Catch `blend' op in non-variant fonts.

	Reported as

	  https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=334

	* src/cff/cf2intrp.c (cf2_interpT2CharString) <cf2_cmdBLEND>: Don't
	allow `blend' op for non-variant fonts.

2016-12-28  Werner Lemberg  <wl@gnu.org>

	[cff] Better check of number of blends.

	* src/cff/cf2intrp.c (cf2_interpT2CharString) <cf2_cmdBLEND>,
	src/cff/cffparse.c (cff_parse_blend): Compare number of blends with
	stack size.

2016-12-27  Werner Lemberg  <wl@gnu.org>

	Documentation updates.

	* docs/CHANGES: Add missing information.

	* docs/formats.txt: Rewritten and updated.

2016-12-27  Werner Lemberg  <wl@gnu.org>

	[truetype, type1] Implement `FT_Get_Var_Design_Coordinates'.

	* src/truetype/ttgxvar.c (TT_Get_Var_Design): Implement.
	(TT_Set_Var_Design): Fix tracing.

	* src/type1/t1load.c (T1_Get_Var_Design): Implement.

2016-12-24  Werner Lemberg  <wl@gnu.org>

	* src/truetype/ttpload.c (tt_face_load_hdmx): Ignore `version'.

	Problem reported by 張俊芝 <418092625@qq.com>.

2016-12-24  Werner Lemberg  <wl@gnu.org>

	* src/sfnt/ttsbit.c (tt_face_load_sbit): Allow more version values.

	Some fonts seem to have the `version' field in the wrong byte order.

	Problem reported by 張俊芝 <418092625@qq.com>.

2016-12-24  Werner Lemberg  <wl@gnu.org>

	* src/truetype/ttpload.c (tt_face_load_loca): Sanitize table length.

	This trivial fix allows us to accept more fonts.

	Problem reported by 張俊芝 <418092625@qq.com>.

2016-12-24  Werner Lemberg  <wl@gnu.org>

	* src/sfnt/sfobjs.c (sfnt_init_face): Fix tracing.

2016-12-22  Werner Lemberg  <wl@gnu.org>

	* CMakeLists.txt: Make it work with cmake 2.8.11.2 (#49909).

2016-12-22  Werner Lemberg  <wl@gnu.org>

	Ensure used preprocessor symbols are defined (#49790).

	* builds/unix/ftconfig.in, builds/vms/ftconfig.h,
	include/freetype/config/ftconfig.h: Check `__GNUC__', `__IBMC__',
	and `__SUNPRO_C' correctly.

2016-12-22  Werner Lemberg  <wl@gnu.org>

	* src/base/ftrfork.c (FT_Raccess_Get_DataOffsets): Check `count'.

	Reported as

	  https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=308

2016-12-22  Werner Lemberg  <wl@gnu.org>

	[cff] Protect against invalid `vsindex' and `blend' values.

	Reported as

	  https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=305

	* src/cff/cf2intrp.c (cf2_interpT2CharString) <cf2_cmdVSINDEX,
	cf2_cmdBLEND>: Implement it.

2016-12-22  Werner Lemberg  <wl@gnu.org>

	[ftfuzzer] Always use Adobe CFF engine.

	* src/tools/ftfuzzer/ftfuzzer.cc (FT_Global::FT_Global): Implement
	it.

2016-12-21  Werner Lemberg  <wl@gnu.org>

	* src/truetype/ttgxvar.c (TT_Vary_Apply_Glyph_Deltas): Thinko.

	I should really stop coding late in the evening...

	Thanks again to Ben for checking.

2016-12-21  Werner Lemberg  <wl@gnu.org>

	[autofit] Support variation fonts.

	(This ChangeLog entry was added later on.)

	* src/autofit/afglobal.c (af_face_globals_free): Remove useless
	code.

	* src/base/ftmm.c (FT_Set_MM_Design_Coordinates,
	* FT_Set_Var_Design_Coordinates, FT_Set_MM_Blend_Coordinates,
	FT_Set_Var_Blend_Coordinates): Finalize
	auto-hinter data to enforce recomputation.  Note that this is a
	brute-force method which should be improved.

2016-12-21  Werner Lemberg  <wl@gnu.org>

	* src/truetype/ttgxvar.c (TT_Vary_Apply_Glyph_Deltas): Thinko.

	Don't apply deltas twice for non-phantom points.

	Spotted by Ben Wagner.

2016-12-21  Werner Lemberg  <wl@gnu.org>

	[cff, truetype] Another try for #49829.

	* src/cff/cffdrivr.c: Don't include
	`FT_SERVICE_METRICS_VARIATIONS_H'.
	(cff_get_advances): Use `ttface->variation_support'.

	* src/truetype/ttdriver.c (tt_get_advances): Use
	`ttface->variation_support'.

	* src/truetype/ttgload.c (TT_Process_Simple_Glyph,
	load_truetype_glyph): Use `ttface->variation_support'.

2016-12-21  Werner Lemberg  <wl@gnu.org>

	[truetype, sfnt] Introduce font variation flags to `TT_Face'.

	* include/freetype/internal/tttypes.h (TT_FACE_FLAG_VAR_XXX):
	New macros describing available functionality of various OpenType
	tables related to font variation.
	(TT_Face): New fields `variation_support' and `mvar_support',
	replacing and extending `use_fvar'.

	* src/sfnt/sfobjs.c (sfnt_init_face, sfnt_load_face): Use
	`variation_support'.

	* src/truetype/ttgxvar.c (ft_var_load_hvar): Set `variation_support'
	field.
	(TT_Vary_Apply_Glyph_Deltas): Updated.

2016-12-21  Werner Lemberg  <wl@gnu.org>

	[base] Improve sanity check for Mac resources (#49888).

	* src/base/ftobjs.c (Mac_Read_sfnt_Resource): Abort if `rlen' is not
	positive.

2016-12-20  Werner Lemberg  <wl@gnu.org>

	[base] More sanity checks for Mac resources.

	We use

	  https://github.com/kreativekorp/ksfl/wiki/Macintosh-Resource-File-Format

	and

	  https://developer.apple.com/legacy/library/documentation/mac/pdf/MoreMacintoshToolbox.pdf#page=151

	as references.

	* include/freetype/internal/ftrfork.h (FT_RFork_Ref): Use FT_Short
	for `res_id'.

	* src/base/ftrfork.c (FT_Raccess_Get_HeaderInfo): Extract map length
	and use it to improve sanity checks.
	Follow the specification more closely;in particular, all data types
	are signed, not unsigned.
	(FT_Raccess_Get_DataOffsets): Follow the specification more closely;
	in particular, all data types are signed, not unsigned.
	Add some sanity checks.

2016-12-20  Werner Lemberg  <wl@gnu.org>

	[truetype] Improve logic for getting fast advance widths.

	* src/cff/cffdrivr.c (cff_get_advances), src/truetype/ttdriver.c
	(tt_get_advances): Use `is_default_instance' for test; this gets
	recomputed after changing blend coordinates.

2016-12-20  Ben Wagner  <bungeman@google.com>
	    Werner Lemberg  <wl@gnu.org>

	[truetype] Fix linear metrics of GX variation fonts (#49829).

	When asking for an unhinted non-default variations,
	`linearVertAdvance' is currently the value from the `hmtx' table
	instead of the actual value after applying the variation.  `HVAR'
	support fixes this, but fonts will exist without that table and will
	need sane fallback.

	Problem also reported as

	  https://bugs.chromium.org/p/skia/issues/detail?id=5917

	* src/truetype/ttgload.c (TT_Process_Simple_Glyph,
	load_truetype_glyph): Implement linear advance adjustments if `HVAR'
	or `VVAR' tables are missing.

2016-12-20  Werner Lemberg  <wl@gnu.org>

	[cff, truetype] Fast advance width retrieval for fonts with HVAR.

	Everything is guarded with TT_CONFIG_OPTION_GX_VAR_SUPPORT.

	* src/base/ftadvanc.c (LOAD_ADVANCE_FAST_CHECK): Don't handle MM.

	* src/cff/cffdrivr.c: Include FT_SERVICE_METRICS_VARIATIONS_H.
	(cff_get_advances): Test for HVAR and VVAR.

	* src/truetype/ttdriver.c (tt_get_advances): Test for HVAR and VVAR.

2016-12-18  Werner Lemberg  <wl@gnu.org>

	[base] Fix invalid mac font recursion.

	Reported as

	  https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=304

	* src/base/ftobjs.c (FT_Open_Face): Code moved to...
	(ft_open_face_internal): ... this function.
	Add a parameter to control whether we try special Mac font handling
	in case of failure.
	(FT_Open_Face, FT_New_Face, FT_New_Memory_Face,
	open_face_from_buffer): Use `ft_open_face_internal'.

2016-12-18  Werner Lemberg  <wl@gnu.org>

	* src/cff/cffobjs.c (cff_face_init): Make named instances work.

2016-12-18  Werner Lemberg  <wl@gnu.org>

	[truetype, cff] Extend `get_var_blend' function of MM service.

	In particular, we need access to named instance data.

	* include/freetype/internal/services/svmm.h (FT_Get_Var_Blend_Func):
	Add argument for `FT_MM_Var'.

	* src/cff/cffload.c (cff_get_var_blend): Updated.
	* src/cff/cffload.h: Updated.

	* src/cff/cf2ft.c (cf2_getNormalizedVector): Updated.

	* src/truetype/ttgxvar.c (tt_get_var_blend): Updated.
	Accept value `NULL' for arguments.
	* src/truetype/ttgxvar.h: Updated.

2016-12-18  Werner Lemberg  <wl@gnu.org>

	[sfnt] Handle `fvar' with zero axes as a non-MM font.

	This is better behaviour than exiting with an error.

	* include/freetype/internal/tttypes.h (TT_Face): Add `use_fvar'
	field.

	* src/sfnt/sfobjs.c (sfnt_init_face): Compute `use_fvar', also
	updating the validation code.
	Use `use_fvar' to compute FT_FACE_FLAG_MULTIPLE_MASTERS.

	* src/truetype/ttgxvar.c (TT_Get_MM_Var): Remove `fvar' validation
	code.

2016-12-18  Werner Lemberg  <wl@gnu.org>

	Minor GX code shuffling.

	* include/freetype/internal/tttypes.h (TT_Face): Move
	`is_default_instance' into TT_CONFIG_OPTION_GX_VAR_SUPPORT
	block.

	* src/sfnt/sfobjs.c (sfnt_init_face): Updated.
	* src/truetype/ttgload.c (IS_DEFAULT_INSTANCE): New macro.
	(TT_Load_Glyph): Use it.

2016-12-18  Werner Lemberg  <wl@gnu.org>

	[cff] Better handling of non-CFF font formats.

	* src/cff/cffload.c (cff_font_load): Pure CFFs don't have a
	signature, so return `FT_Err_Unknown_File_Format' more often.

2016-12-17  Werner Lemberg  <wl@gnu.org>

	* src/cff/cffload.c (cff_build_blend_vector): Remove redundant code.

2016-12-17  Werner Lemberg  <wl@gnu.org>

	* src/truetype/ttobjs.c (tt_face_init): Simplify conditional code.

2016-12-17  Werner Lemberg  <wl@gnu.org>

	[sfnt, truetype] Various sanitizing fixes.

	* src/sfnt/sfobjs.c (sfnt_init_face): If the axis count in `fvar' is
	zero, set `num_instances' to zero.

	* src/truetype/ttgxvar.c (TT_Get_MM_Var): Handle `fvar' table with
	zero axes as invalid.

	* src/truetype/ttobjs.c (tt_face_init): Improve logic of loading
	`loca', `cvt', `fpgm', and `prep' table.

2016-12-17  Werner Lemberg  <wl@gnu.org>

	Improve tracing of `FT_Open_Face'.

	* src/base/ftobjs.c (FT_Open_Face): Return info on number of
	available faces and numbered instances, or the indices of the
	requested face and numbered instance.

	* src/sfnt/sfobjs. (sfnt_open_font): Trace number of subfonts.

2016-12-17  Werner Lemberg  <wl@gnu.org>

	* src/cff/cffload.c (cff_load_private_dict): Always init `blend'.

	Reported as

	  https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=295

2016-12-16  Werner Lemberg  <wl@gnu.org>

	[truetype] Fix `cvar' sanity test.

	Reported by Dave Arnold.

	* src/truetype/ttgxvar.c (tt_face_vary_cvt): Use tuple count mask.

2016-12-16  Werner Lemberg  <wl@gnu.org>

	[cff, truetype] Remove compiler warnings; fix `make multi'.

	* src/cff/cf2font.h: Include `cffload.h'.

	* src/cff/cffload.c: Include FT_MULTIPLE_MASTERS_H and
	FT_SERVICE_MULTIPLE_MASTERS_H.
	(cff_vstore_load): Eliminate `vsSize'.
	(cff_load_private_dict): Tag as `FT_LOCAL_DEF'.

	* src/cff/cffload.h: Include `cffobjs.h'.
	Provide declaration for `cff_load_private_dict'.

	* src/truetype/ttgxvar.c (ft_var_load_hvar): Eliminate
	`minorVersion' and `map_offset'.

2016-12-16  Werner Lemberg  <wl@gnu.org>

	[cff] Fix heap buffer overflow (#49858).

	* src/cff/cffparse.c (cff_parser_run): Add one more stack size
	check.

2016-12-15  Werner Lemberg  <wl@gnu.org>

	Fix clang warnings.

	* src/cff/cffload.c (cff_blend_doBlend): Add cast.
	(cff_subfont_load): Set `error' correctly.

	* src/sfnt/ttmtx.c (tt_face_get_metrics): Typo.

2016-12-15  Dave Arnold  <darnold@adobe.com>
	    Werner Lemberg  <wl@gnu.org>

	[cff] Implement CFF2 support (2/2).

	The font variation code.  All parts dependent on the GX code in the
	`truetype' module are guarded with TT_CONFIG_OPTION_GX_VAR_SUPPORT.
	In other words, you can still compile the `cff' module without
	defining TT_CONFIG_OPTION_GX_VAR_SUPPORT (which brings you CFF2
	support without font variation).

	* src/cff/cf2font.c (cf2_font_setup): Add support for font
	variation.
	* src/cff/cf2font.h (CF2_Font): Add fields for variation data.

	* src/cff/cf2ft.c (cf2_free_instance): Free blend data.
	(cf2_getVStore, cf2_getNormalizedVector): New functions.
	* src/cff/cf2ft.h: Updated.

	* src/cff/cf2intrp.c: Include `cffload.h'.
	(cf2_cmdRESERVED_15, cf2_cmdRESERVED_16): Replace with...
	(cf2_cmdVSINDEX, cf2_cmdBLEND): ... this new enum values.
	(cf2_doBlend): New function.
	(cf2_interpT2CharString): Handle `vsindex' and `blend' opcodes.

	* src/cff/cffload.c (FT_fdot14ToFixed): New macro.
	(cff_vstore_done, cff_vstore_load): New functions.
	(cff_blend_clear, cff_blend_doBlend, cff_blend_build_vector,
	cff_blend_check_vector): New functions.
	(cff_load_private_dict): Add arguments for blend vector.
	Handle blend data.
	(cff_subfont_load, cff_subfont_done): Updated.
	(cff_font_load): Handle CFF2 variation store data.
	(cff_font_done): Updated.
	* src/cff/cffload.h: Include `cffparse.h'.
	Updated.

	* src/cff/cffobjs.c (cff_face_done): Updated.

	* src/cff/cffparse.c: Include `cffload.h'.
	(cff_parse_num): Handle internal value 255.
	(cff_parse_vsindex, cff_parse_blend): New functions.
	(CFF_FIELD_BLEND): New macro.
	(cff_parser_run): Updated.
	* src/cff/cffparse.h (cff_kind_blend): New enum value.

	* src/cff/cfftoken.h: Handle `vstore', `vsindex', and `blend'
	dictionary values.

	* src/cff/cfftypes.h (CFF_VarData, CFF_AxisCoords, CFF_VarRegion,
	CFF_VStore, CFF_Blend): New structures.
	(CFF_FontRecDict): Add `vstore_offset' field.
	(CFF_Private): Add `vsindex' field.
	(CFF_SubFont): Add fields for blend data.
	(CFF_Font): Add `vstore' field.

	* src/truetype/ttgxvar.c (TT_Get_MM_Var): `CFF2' is equal to `gvar',
	since glyph variation data is directly embedded.
	(TT_Set_MM_Blend): Don't load `gvar' table for CFF2 fonts.

2016-12-15  Dave Arnold  <darnold@adobe.com>
	    Werner Lemberg  <wl@gnu.org>

	[cff] Implement CFF2 support (1/2).

	This commit does not contain the blend code for font variation
	support, which follows in another commit.

	You should ignore whitespace while inspecting this commit.

	* include/freetype/internal/tttypes.h (TT_Face): Add `isCFF2'
	member.

	* src/cff/cf2font.h (CF2_Font): Add `isCFF2' member.

	* src/cff/cf2ft.c (cf2_decoder_parse_charstrings): Handle `isCFF2'
	flag.
	(cf2_getMaxstack): New function.
	* src/cff/cf2ft.h: Updated.

	* src/cff/cf2intrp.c (cf2_escRESERVED_38): New enum.
	(cf2_interpT2CharString): Handle CFF2 differences.
	Add tracing message for errors.

	* src/cff/cffdrivr.c (cff_get_glyph_name, cff_get_name_index):
	Update for CFF2.

	* src/cff/cffload.c (FT_FIXED_ONE): New macro.
	(cff_index_init, cff_index_load_offsets, cff_index_access_element,
	cff_index_get_name, cff_ft_select_get, cff_load_private_dict,
	cff_subfont_load, cff_font_load): Handle CFF2.
	* src/cff/cffload.h: Updated.

	* src/cff/cffobjs.c (cff_face_init): Handle CFF2.

	* src/cff/cffparse.c (cff_parse_maxstack): New function.
	(CFFCODE_TOPDICT, CFFCODE_PRIVATE): Removed
	* src/cff/cffparse.h (CFF2_MAX_STACK, CFF2_DEFAULT_STACK): New
	macros.
	(CFF2_CODE_TOPDICT, CFF2_CODE_FONTDICT, CFF2_CODE_PRIVATE): New
	macros.

	* src/cff/cfftoken.h: Add fields for CFF2 dictionaries (but no blend
	stuff).

	* src/cff/cfftypes.h (CFF_Index): Add `hdr_size' field.
	(CFF_FontRecDict): Add `maxstack' field.
	(CFF_Private): Add `subfont' field.
	(CFF_Font): Add `top_dict_length' and `cff2' fields.

	* src/sfnt/sfobjs.c (sfnt_load_face): Handle `CFF2' table.

2016-12-15  Werner Lemberg  <wl@gnu.org>
	    Dave Arnold  <darnold@adobe.com>

	[truetype] Provide HVAR advance width variation as a service.

	Everything is guarded with TT_CONFIG_OPTION_GX_VAR_SUPPORT.

	* src/truetype/ttdriver.c (tt_service_metrics_variations): Updated.

	* src/truetype/ttgxvar.c (TT_Vary_Apply_Glyph_Deltas): Prevent
	double adjustment of advance width.

	* src/sfnt/ttmtx.c: Include FT_SERVICE_METRICS_VARIATIONS_H.
	(tt_face_get_metrics): Apply metrics variations.

2016-12-15  Dave Arnold  <darnold@adobe.com>
	    Werner Lemberg  <wl@gnu.org>

	[truetype] Provide function to apply `HVAR' advance width variation.

	Everything is guarded with TT_CONFIG_OPTION_GX_VAR_SUPPORT.

	* src/truetype/ttgxvar.c (tt_hadvance_adjust): New function.
	* src/truetype/ttgxvar.h: Updated.

2016-12-15  Dave Arnold  <darnold@adobe.com>
	    Werner Lemberg  <wl@gnu.org>

	[truetype] Add `HVAR' table parsing.

	Note that this is not complete yet; it only handles advance width
	variation.

	Activation of the code follows in another commit.

	Everything is guarded with TT_CONFIG_OPTION_GX_VAR_SUPPORT.

	* include/freetype/ftmm.h (FT_Var_Named_Style): Add `psid' member.

	* src/truetype/ttgxvar.h (GX_HVarData, GX_AxisCoords, GX_HVarRegion,
	GX_HVStore, GX_WidthMap): New auxiliary structures for...
	(GX_HVarTable): ... HVAR main structure.
	(GX_BlendRec): Add data for HVAR loading.

	* src/truetype/ttgxvar.c (FT_FIXED_ONE, FT_fdot14ToFixed,
	FT_intToFixed, FT_fixedToInt): New macros.
	(ft_var_load_hvar): New function.
	(TT_Get_MM_Var): Updated.
	(tt_done_blend): Deallocate HVAR data.

2016-12-15  Dave Arnold  <darnold@adobe.com>

	[cff] Extend number parsing.

	The forthcoming CFF2 support needs a dynamic parsing limit.

	* src/cff/cffparse.c (cff_parse_num, do_fixed, cff_parse_fixed,
	cff_parse_fixed_scaled, cff_parse_fixed_dynamic): Add argument for
	parser.
	(cff_parse_font_matrix, cff_parse_font_bbox, cff_parse_private_dict,
	cff_parse_multiple_master, cff_parse_cid_ros, cff_parser_run): Updated.

	* src/cff/cffparse.h (cff_parse_num): Export locally.

2016-12-15  Dave Arnold  <darnold@adobe.com>

	[cff] Implement dynamic stack size for Adobe engine.

	This also adds `cf2_stack_setReal' and `cf2_stack_pop', needed for
	the forthcoming CFF2 support.

	* src/cff/cf2stack.c (cf2_stack_init): Add argument for stack size.
	(cf2_stack_free): Deallocate stack.
	(cf2_stack_count, cf2_stack_pushInt, cf2_stack_pushFixed,
	cf2_stack_popInt, cf2_stack_popFixed, cf2_stack_getReal,
	cf2_stack_clear): Updated.
	(cf2_stack_setReal, cf2_stack_pop): New functions.

	* src/cff/cf2stack.h (CF2_Stack): Add `stackSize' member.
	Update function declarations.

	* src/cff/cf2intrp.c (cf2_interpT2CharString): Updated.

	* src/cff/cffparse.c (cff_parser_init): Add parameter for stack
	size; return error code.
	(cff_parser_done): New function.
	(cff_parser_run): Updated.

	* src/cff/cffparse.h (CFF_Parser): Add `stackSize' member and make
	`stack' a pointer.
	Update function declarations.

	* src/cff/cffload.c (cff_load_private_dict, cff_subfont_load):
	Updated.

2016-12-15  Dave Arnold  <darnold@adobe.com>
	    Werner Lemberg  <wl@gnu.org>

	[cff] Code shuffling.

	* src/cff/cfftypes.h (CFF_Font): Add `library' and `base_offset'
	fields.

	* src/cff/cffload.c (cff_subfont_load): Change last argument to
	`CFF_Font'
	Split off parsing of private dictionary into...
	(cff_load_private_dict): ...this new function.
	(cff_font_load): Updated.

2016-12-14  Werner Lemberg  <wl@gnu.org>

	[sfnt, truetype] Add framework for Metrics Variations service.

	No effect yet; service functions will be implemented later on.

	Everything is guarded with TT_CONFIG_OPTION_GX_VAR_SUPPORT.

	* include/freetype/internal/services/svmetric.h: New file.

	* include/freetype/internal/ftserv.h
	(FT_SERVICE_METRICS_VARIATIONS_H): New macro.

	* include/freetype/internal/tttypes.h (TT_Face): New field `var'.

	* src/sfnt/sfobjs.c: Include FT_SERVICE_METRICS_VARIATIONS_H.
	(sfnt_init_face): Initialize `face->var'.

	* src/truetype/ttdriver.c: Include FT_SERVICE_METRICS_VARIATIONS_H.
	(tt_service_metrics_variations): New service.
	(tt_services): Updated.

	* src/truetype/ttpic.h: Updated.

2016-12-14  Werner Lemberg  <wl@gnu.org>

	[cff] Add Multiple Masters service.

	The code simply uses the MM functions from the `truetype' module.

	Everything is guarded with TT_CONFIG_OPTION_GX_VAR_SUPPORT.

	* include/freetype/internal/tttypes.h (TT_Face): New field `mm'.

	* src/cff/cffdrivr.c: Include FT_SERVICE_MULTIPLE_MASTERS_H.
	(cff_set_mm_blend, cff_get_mm_blend, cff_get_mm_var,
	cff_set_var_design, cff_get_var_design): New functions.
	(cff_service_multi_masters): New service.
	(cff_services): Updated.

	* src/cff/cffload.c (cff_get_var_blend, cff_done_blend): New
	functions.
	* src/cff/cffload.h: Updated.

	* src/cff/cffpic.h (CFF_SERVICE_MULTI_MASTERS_GET): New macro.

	* src/sfnt/sfobjs.c: Include FT_SERVICE_MULTIPLE_MASTERS_H.
	(sfnt_init_face): Initialize `face->mm'.

2016-12-14  Werner Lemberg  <wl@gnu.org>

	Extend functionality of `ft_module_get_service'.

	It can now differentiate between local and global searches.

	* src/base/ftobjs.c (ft_module_get_service): Add `global' argument.
	(FT_Get_TrueType_Engine_Type): Updated.

	* src/cff/cffdrivr.c (cff_get_ps_name, cff_get_cmap_info): Updated.

	* include/freetype/internal/ftobjs.h: Updated.
	* include/freetype/internal/ftserv.h (FT_FACE_FIND_GLOBAL_SERVICE):
	Updated.

2016-12-14  Werner Lemberg  <wl@gnu.org>

	* src/truetype/ttgxvar.c (tt_get_var_blend): Fix compiler warning.

2016-12-14  Dave Arnold  <darnold@adobe.com>
	    Werner Lemberg  <wl@gnu.org>

	[sfnt, cff] Minor preparations.

	* include/freetype/tttags.h (TTAG_CFF2, TTAG_HVAR, TTAG_MVAR,
	TTAG_VVAR): New SFNT table tags.

	* src/cff/cf2fixed.h (CF2_FIXED_ONE, CF2_FIXED_EPSILON): Add cast.

2016-12-10  Werner Lemberg  <wl@gnu.org>

	[truetype, type1] Add `get_var_blend' to MM service.

	For internal use; we want to share code between the forthcoming CFF2
	support and TrueType.

	* include/freetype/internal/services/svmm.h (FT_Get_Var_Blend_Func):
	New typedef.
	(MultiMasters): Add `get_var_blend'.
	(FT_Service_MultiMasters): Updated.

	* src/truetype/ttgxvar.c (tt_get_var_blend): New function.
	* src/truetype/ttgxvar.h: Updated.

	* src/truetype/ttdriver.c (tt_service_gx_multi_masters): Updated.
	* src/type1/t1driver.c (t1_service_multi_masters): Updated.

2016-12-10  Werner Lemberg  <wl@gnu.org>

	[truetype, type1] Add `done_blend' to MM service.

	For internal use; we want to share code between the forthcoming CFF2
	support and TrueType.

	* include/freetype/internal/services/svmm.h (FT_Done_Blend_Func):
	New typedef.
	(MultiMasters): Add `done_blend'.
	(FT_Service_MultiMasters): Updated.

	* src/truetype/ttgxvar.c (tt_done_blend): Use `TT_Face' as argument.
	* src/truetype/ttgxvar.h: Updated.

	* src/truetype/ttobjs.c (TT_Face_Done): Updated.

	* src/truetype/ttdriver.c (tt_service_gx_multi_masters): Updated.
	* src/type1/t1driver.c (t1_service_multi_masters): Updated.

2016-12-09  Werner Lemberg  <wl@gnu.org>

	[sfnt] Revert change from 2016-12-08.

	I missed the functionality of `ft_module_get_service', which makes
	the change unnecessary.

2016-12-08  Werner Lemberg  <wl@gnu.org>

	Add framework to support services with 8 functions.

	We will need this for CFF variation font support.

	* include/freetype/internal/ftserv.h (FT_DEFINE_SERVICEDESCREC8):
	New macro.

2016-12-08  Werner Lemberg  <wl@gnu.org>

	[sfnt] Add `get_glyph_name' and `get_name_index' to SFNT interface.

	CFF2 fonts will need access to those two functions.

	* include/freetype/internal/sfnt.h: Include FT_SERVICE_GLYPH_DICT_H.
	(SFNT_Interface): Add `get_glyph_name' and `get_name_index' members.
	(FT_DEFINE_SFNT_INTERFACE): Updated.

	* src/sfnt/sfdriver.c (sfnt_get_glyph_name, sfnt_get_name_index):
	Fix signatures to exactly correspond to the glyph dict service
	function typedefs.
	(sfnt_interface): Updated.

2016-12-06  Dave Arnold  <darnold@adobe.com>

	Add `FT_Get_Var_Design_Coordinates' function.

	Note that the low-level functions aren't implemented yet.

	* include/freetype/ftmm.h: Declare.

	* include/freetype/internal/services/svmm.h
	(FT_Get_Var_Design_Func): New typedef.
	(MultiMasters): New MM service function `get_var_design'.
	(FT_DEFINE_SERVICE_MULTIMASTERSREC): Updated.
	Update all callers.

	* src/base/ftmm.c (FT_Get_Var_Design_Coordinates): Implement.

	* src/truetype/ttdriver.c: Updated.

	* src/truetype/ttgxvar.c (TT_Get_Var_Design): New dummy function to
	handle `get_var_design' service.
	* src/truetype/ttgxvar.h: Updated.

	* src/type1/t1driver.c: Updated.

	* src/type1/t1load.c (T1_Get_Var_Design): New dump function to
	handle `get_var_design' service.
	* src/type1/t1load.h: Updated.

2016-12-06  Werner Lemberg  <wl@gnu.org>

	* src/type1/t1load.c (parse_subrs): Fix memory leak.

	The `subrs' keyword might erroneously occur multiple times.

	Reported as

	  https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=231

2016-12-01  Werner Lemberg  <wl@gnu.org>

	[gzip] Improve building with external zlib (#49673).

	Building FreeType with external zlib 1.2.8 makes msvc 14 stop with
	the following error.

	  ftgzip.c
	  zlib-1.2.8\zlib.h(86): error C2061:
	                         syntax error: identifier 'z_const'
	  zlib-1.2.8\zlib.h(94): error C2054:
	                         expected '(' to follow 'z_const'
	  zlib-1.2.8\zlib.h(94): error C2085:
	                         'msg': not in formal parameter list
	  ...
	  zlib-1.2.8\zlib.h(877): fatal error C1003:
	                          error count exceeds 100; stopping compilation

	The error happens because FreeType keeps an own copy of zlib-1.1.4
	under `src/gzip'.  When building `src/gzip/ftgzip.c' with
	FT_CONFIG_OPTION_SYSTEM_ZLIB defined, it uses

	  #include <zlib.h>

	which correctly finds an external `zlib.h', but `zlib.h' itself has
	a line

	  #include "zconf.h"

	which makes Visual Studio 2015 find `src/gzip/zconf.h' while
	compiling the files in `src/gzip'.

	* src/gzip/zconf.h: Rename to...
	* src/gzip/ftzconf.h: ... this.
	* src/gzip/zlib.h, src/gzip/rules.mk (GZIP_DRV_SRCS): Updated.

2016-12-01  Oleksandr Chekhovskyi  <oleksandr.chekhovskyi@gmail.com>

	[autofit] Fix Emscripten crash (patch #9180).

	Function calls through pointers must use a matching signature to
	work on Emscripten, since such calls are dispatched through lookup
	tables grouped by signature.

	* src/autofit/aftypes.h (AF_WritingSystem_ApplyHintsFunc): Fix
	typedef.

2016-11-29  Werner Lemberg  <wl@gnu.org>

	[smooth] Revert previous commit.  Already fixed with 6ca54c64.

2016-11-29  Werner Lemberg  <wl@gnu.org>

	[smooth] Avoid conditional jump on uninitialized value (#49711).

	* src/smooth/ftgrays.c (gray_raster_render): Initialize `worker'.

2016-11-27  Nikolaus Waxweiler  <madigens@gmail.com>

	[autofit] Code shuffling.

	Also improve some comments and remove unused code.

	No functional change.

	* src/autofit/afloader.c (af_loader_load_g): Merged with...
	(af_loader_load_glyph): ...this function.
	Split off emboldening code into...
	(af_loader_embolden_glyph_in_slot): ... this function.

2016-11-17  Werner Lemberg  <wl@gnu.org>

	Better support of LLP64 systems with gcc (and clang).

	* builds/unix/configure.raw: Call `AC_TYPE_LONG_LONG_INT'.

	* builds/unix/ftconfig.in (FT_LONG64): Enable for LLP64 systems (and
	suppress warnings) even without `FT_CONFIG_OPTION_FORCE_INT64'.

2016-11-10  Werner Lemberg  <wl@gnu.org>

	Fix `lcd_weights' array size.

	* include/freetype/internal/ftobjs.h (FT_LibraryRec): Do it.

	Reported by Nikolaus.

2016-11-06  Werner Lemberg  <wl@gnu.org>

	* src/base/ftobjs.c (FT_Render_Glyph_Internal): Fix tracing.

2016-11-06  Werner Lemberg  <wl@gnu.org>

	[sfnt] Improve FT_LOAD_BITMAP_METRICS_ONLY for `sbix' format.

	It's unavoidable to call the PNG engine, but to get the metrics it
	is sufficient to read the PNG image's header only.

	* src/sfnt/pngshim.c (Load_SBit_Png): Add argument to control the
	allocation of the glyph slot.
	* src/sfnt/pngshim.h: Updated.
	* src/sfnt/ttsbit.c (tt_sbit_decoder_load_png,
	tt_face_load_sbix_image, tt_face_load_sbit_image): Updated.

2016-11-06  Werner Lemberg  <wl@gnu.org>

	[sfnt] Speed up `sbix' lookup.

	This also fixes a bug introduced in 2016-10-01 which prevents
	display of embedded bitmap fonts that use the `sbix' format.

	* src/sfnt/ttsbit.c (tt_face_load_sbit): Store `sbix' size and
	offset also in `ebdt_size' and `ebdt_start', respectively.  This
	makes the test for an embedded bitmap data table succeed for this
	format.

	(tt_face_load_strike_metrics) <TT_SBIT_TABLE_TYPE_SBIX>: Use
	`ebdt_size' and `ebdt_start'
	(tt_face_load_sbix_image): Ditto.

2016-11-06  Seigo Nonaka  <nona@google.com>
	    Werner Lemberg  <wl@gnu.org>

	Introduce a way of quickly retrieving (embedded) bitmap metrics.

	`FT_Load_Glyph' doesn't generate a bitmap for a non-bitmap glyph
	until the user calls `FT_Render_Glyph'.  However, it always
	allocates memory for bitmaps and copies or decodes the contents of a
	bitmap glyph, which can be quite slow for PNG data.

	* include/freetype/freetype.h (FT_LOAD_BITMAP_METRICS_ONLY): New
	macro.

	* src/base/ftobjs.c (FT_Load_Glyph): Unset FT_LOAD_RENDER if
	FT_LOAD_BITMAP_METRICS_ONLY is used.

	* src/sfnt/ttsbit.c (tt_sbit_decoder_alloc_bitmap,
	tt_sbit_decoder_load_bitmap): Add argument to control allocation of
	the glyph slot.
	(tt_sbit_decoder_load_image, tt_sbit_decoder_load_compound,
	tt_face_load_sbit_image): Updated.

	* src/pcf/pcfdrivr.c (PCF_Glyph_Load): Quickly exit if
	`FT_LOAD_BITMAP_METRICS_ONLY' is set.

	* src/pfr/pfrsbit.c, src/pfr/pfrsbit.h (pfr_slot_load_bitmap): Add
	argument to control allocation of the glyph slot.
	* src/pfr/pfrobjs (pfr_slot_load): Updated.

	* src/winfonts/winfnt.c (FNT_Load_Glyph): Ditto.

	* docs/CHANGES: Updated.

2016-11-06  Werner Lemberg  <wl@gnu.org>

	Synchronize with gnulib (#49448).

	* include/freetype/config/ftconfig.h, builds/unix/ftconfig.in,
	builds/vms/ftconfig.h (FT_TYPEOF): Update code to use definition in
	current version of `intprops.h'.
	Other minor synchronization to reduce code differences between the
	three files.

2016-11-03  Behdad Esfahbod  <behdad@behdad.org>

	[truetype] Clamp variation requests to valid range.

	This is required by OpenType 1.8; it also avoids rounding surprises.

	* src/truetype/ttgxvar.c (TT_Set_Var_Design): Clamp design coordinates
	outside of the allowed range to always stay within the range instead
	of producing an error.

2016-10-29  Werner Lemberg  <wl@gnu.org>

	[truetype] Remove clang warnings.

	* src/truetype/ttinterp.h (TT_ExecContextRec): Using `FT_ULong' for
	loop counter handling.

	* src/truetype/ttinterp.c: Updated.
	(Ins_SCANTYPE): Use signed constant.
	(TT_RunIns): Ensure `num_twilight_points' is 16bit.

2016-10-27  Werner Lemberg  <wl@gnu.org>

	[truetype] Fix commit from 2014-11-24.

	Problem reported by Hin-Tak Leung  <htl10@users.sourceforge.net>.

	* src/truetype/ttpload.c (tt_face_load_hdmx): Fix file checking
	logic.

2016-10-26  Werner Lemberg  <wl@gnu.org>

	Add `FT_Get_{MM,Var}_Blend_Coordinates' functions.

	* include/freetype/ftmm.h: Declare.

	* include/freetype/internal/services/svmm.h (FT_Get_MM_Blend_Func):
	New typedef.
	(MultiMasters): New MM service function `get_mm_blend'.
	(FT_DEFINE_SERVICE_MULTIMASTERSREC): Updated.
	Update all callers.

	* src/base/ftmm.c (FT_Get_MM_Blend_Coordinates,
	FT_Get_Var_Blend_Coordinates): Implement.

	* src/truetype/ttdriver.c: Updated.

	* src/truetype/ttgxvar.c (TT_Get_MM_Blend): New function to handle
	`get_mm_blend' service.
	* src/truetype/ttgxvar.h: Updated.

	* src/type1/t1driver.c: Updated.

	* src/type1/t1load.c (T1_Get_MM_Blend): New function to handle
	`get_mm_blend' service.
	* src/type1/t1load.h: Updated.

	* docs/CHANGES: Document.

2016-10-26  Werner Lemberg  <wl@gnu.org>

	* src/type1/t1load.c (parse_subrs): Fix limit check.

	Reported as

	  https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=81

2016-10-25  Alexei Podtelezhnikov  <apodtele@gmail.com>

	[cff] Correct cmap format reporting (#24819).

	* src/cff/cffdrivr.c (cff_get_cmap_info): Throw an error on synthetic
	charmap instead of guessing its format and language.

2016-10-22  Werner Lemberg  <wl@gnu.org>

	[truetype] Fix SCANTYPE instruction (#49394).

	* src/truetype/ttinterp.c (Ins_SCANTYPE): Only use lower 16bits.

2016-10-22  Werner Lemberg  <wl@gnu.org>

	[sfnt] Improve handling of invalid post 2.5 tables [#49393].

	* src/sfnt/ttpost.c (load_format_25): We need at least a single
	table entry.

2016-10-14  Werner Lemberg  <wl@gnu.org>

	[truetype] Fix handling of `cvar' table data.

	Reported as

	  https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=53

	* src/truetype/ttgxvar.c (tt_face_vary_cvt): Ignore invalid CVT
	indices.

2016-10-11  Werner Lemberg  <wl@gnu.org>

	[psaux] Fix handling of invalid flex subrs.

	Problem reported as

	  https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=52

	* src/psaux/t1decode.c (t1_decoder_parse_charstrings)
	<op_callothersubr>: Set `flex_state' after error checking.

2016-10-11  Werner Lemberg  <wl@gnu.org>

	* src/truetype/ttgxvar.c (tt_done_blend): Fix deallocation.

2016-10-08  Werner Lemberg  <wl@gnu.org>

	* src/cid/cidload.c (cid_face_open): Properly propagate `error'.

2016-10-08  Werner Lemberg  <wl@gnu.org>

	[cid] Fix parsing of subr offsets.

	Bug introduced 2016-05-16.

	* src/cid/cidparse.c (cid_parser_new): Fix off-by-one error.

2016-10-01  Werner Lemberg  <wl@gnu.org>

	[sfnt] Disable bitmap strikes if we don't have a bitmap data table.

	* src/sfnt/ttsbit.c (tt_face_load_sbit): Check whether we have
	a bitmap data table.

2016-10-01  Alexei Podtelezhnikov  <apodtele@gmail.com>

	[smooth] Remove impossibility.

	* src/smooth/ftgrays.c (TWorker): Rearrange fields.
	(gray_convert_glyph): Remove impossible condition and clean up.

2016-09-29  Werner Lemberg  <wl@gnu.org>

	[pcf] Enrich family name with foundry name and glyph width info.

	This is a very old patch from openSuSE (from 2006, submitted to
	FreeType in 2011) that I forgot to apply.

	  https://build.opensuse.org/package/view_file/openSUSE:Factory/freetype2/freetype2-bitmap-foundry.patch

	Prepend the foundry name plus a space to the family name.  There are
	many fonts just called `Fixed' which look completely different, and
	which have nothing to do with each other.  When selecting `Fixed' in
	KDE or Gnome one gets results that appear rather random, the style
	changes often if one changes the size and one cannot select some
	fonts at all.

	We also check whether we have `wide' characters; all put together,
	we get family names like `Sony Fixed' or `Misc Fixed Wide'.

	* src/pcf/pcfread.c (pcf_load_font): Implement it.

	* docs/CHANGES: Document it.

2016-09-29  Werner Lemberg  <wl@gnu.org>

	[ftfuzzer] Speed up.

	* src/tools/ftfuzzer/ftfuzzer.cc (LLVMFuzzerTestOneInput): Don't
	check for embedded bitmaps if we have a non-default instance.

2016-09-29  Werner Lemberg  <wl@gnu.org>

	[truetype] Disallow bitmap strikes for non-default instances.

	Also speed up access of default instances if GX variations are
	active.

	* include/freetype/internal/tttypes.h (TT_FaceRec): Add
	`is_default_instance' member.

	* src/sfnt/sfobjs.c (sfnt_init_face): Initialize
	`is_default_instance'.

	* src/truetype/ttgload.c (TT_Process_Simple_Glyph,
	load_truetype_glyph): Add test for default instance.
	(TT_Load_Glyph): Load embedded bitmaps for default instance only.

	* src/truetype/ttgxvar.c (TT_Set_MM_Blend): Compute
	`is_default_instance'.

2016-09-29  Werner Lemberg  <wl@gnu.org>

	[truetype] Clean up `TT_Face' structure.

	* include/freetype/internal/tttypes.h (TT_FaceRec): Remove unused
	fields `horz_metrics' and `vert_metrics'.
	Update documentation.

	* src/sfnt/sfobjs.c (sfnt_done_face): Updated.

2016-09-28  Werner Lemberg  <wl@gnu.org>

	More FT_ZERO usage.

	* src/gxvalid/gxvcommn.c (gxv_ClassTable_validate):
	s/ft_memset/FT_MEM_ZERO/.

	* src/psaux/t1decode.c (t1_decoder_parse_charstrings):
	s/ft_memset/FT_ARRAY_ZERO/.

	* src/raster/ftraster.c (FT_ZERO): Define.
	(ft_black_new): Use it.
	* src/raster/ftrend1.c (ft_raster1_get_cbox):
	s/FT_MEM_ZERO/FT_ZERO/.

	* src/smooth/ftgrays.c (FT_ZERO): Define.
	(gray_raster_new): Use it.
	* src/smooth/ftsmooth.c (ft_smooth_get_cbox):
	s/FT_MEM_ZERO/FT_ZERO/.

2016-09-28  Werner Lemberg  <wl@gnu.org>

	*/*: s/FT_MEM_ZERO/FT_ZERO/ where appropriate.

2016-09-27  Werner Lemberg  <wl@gnu.org>

	[truetype] Trace number of executed opcodes.

	* src/truetype/ttinterp.c (TT_RunIns): Implement it.

2016-09-27  Werner Lemberg  <wl@gnu.org>

	[truetype] Speed up `TT_Load_Glyph'.

	This avoids additional calls to `tt_face_lookup_table' for the
	`glyf' table, which can be expensive.

	* include/freetype/internal/tttypes.h (TT_LoaderRec): Move
	`glyf_offset' field to ...
	(TT_FaceRec): ... this structure.
	* src/truetype/ttgload.c (load_truetype_glyph): Updated.
	(tt_loader_init): Move initialization of `glyf_offset' to ...
	* src/truetype/ttpload.c (tt_face_load_loca): ... this function.

2016-09-27  Werner Lemberg  <wl@gnu.org>

	[truetype] Introduce dynamic limits for some bytecode opcodes.

	This speeds up FreeType's handling of malformed fonts.

	* src/truetype/ttinterp.c (TT_RunIns): Set up limits for the number
	of twilight points, the total number of negative jumps, and the
	total number of loops in LOOPCALL opcodes.  The values are based on
	the number of points and entries in the CVT table.
	(Ins_JMPR): Test negative jump counter.
	(Ins_LOOPCALL): Test loopcall counter.

	* src/truetype/ttinterp.h (TT_ExecContext): Updated.

	* docs/CHANGES: Updated.

2016-09-25  Werner Lemberg  <wl@gnu.org>

	[truetype] Sanitize only last entry of `loca' table.

	Without this patch, a loca sequence like `0 100000 0 100000 ...',
	where value 100000 is larger than the `glyf' table size, makes
	FreeType handle the whole `glyf' table as a single glyph again and
	again, which is certainly invalid (and can be very slow, too).

	* src/truetype/ttpload.c (tt_face_get_location): Implement.
	Improve tracing messages.

2016-09-25  Werner Lemberg  <wl@gnu.org>

	* src/tools/ftfuzzer/ftfuzzer.cc (LLVMFuzzerTestOneInput): Fix typo.

2016-09-24  Werner Lemberg  <wl@gnu.org>

	[autofit] Tracing fixes.

	* src/autofit/afmodule.c (af_autofitter_load_glyph): Call dumping
	functions only if we actually do tracing.

2016-09-22  Alexei Podtelezhnikov  <apodtele@gmail.com>

	[smooth] Reduce divisions in the line renderer.

	We don't need some divisions if a line segments stays within a single
	row or a single column of pixels.

	* src/smooth/ftgrays.c (gray_render_line) [FT_LONG64]: Make divisions
	conditional.

2016-09-15  Alexei Podtelezhnikov  <apodtele@gmail.com>

	* src/smooth/ftgrays.c (gray_sweep): Remove check for empty table.

2016-09-14  Alexei Podtelezhnikov  <apodtele@gmail.com>

	[smooth] Another tiny speed-up.

	* src/smooth/ftgrays.c (gray_find_cell): Merge into...
	(gray_record_cell): ... this function.

2016-09-11  Alexei Podtelezhnikov  <apodtele@gmail.com>

	* src/smooth/ftgrays.c (gray_{find,set}_cell): Remove dubious code.

2016-09-11  Alexei Podtelezhnikov  <apodtele@gmail.com>

	[smooth] Fix valgrind warning and reoptimize.

	The algorithm calls `gray_set_cell' at the start of each new contour
	or when the contours cross the cell boundaries. Double-checking for
	that is wasteful.

	* src/smooth/ftgrays.c (gray_set_cell): Remove check for a new cell.
	(gray_convert_glyph): Remove initialization introduced by 44b172e88.

2016-09-10  Werner Lemberg  <wl@gnu.org>

	[sfnt] Fix previous commit.

	Problems reported as

	  https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=40

	We now map the strike index right before accessing the physical
	data, not earlier.

	* src/sfnt/sfobjs.c (sfnt_load_face): Set `face->sbit_strike_map'
	after creating the map so that...

	* src/sfnt/ttsbit.c (tt_face_load_strike_metrics): ... this function
	can be used before and after setting up `sbit_strike_map'.
	(tt_face_set_sbit_strike): Revert change.
	(tt_sbit_decoder_init, tt_face_load_sbix_image): Map strike index.

	* src/truetype/ttdriver.c (tt_size_select): Revert change.

2016-09-09  Werner Lemberg  <wl@gnu.org>

	[ftfuzzer] Minor improvements.

	* src/tools/ftfuzzer/ftfuzzer.cc (LLVMFuzzerTestOneInput): Ignore
	invalid strikes.
	Use better values for call to `FT_Set_Char_Size'.

2016-09-09  Werner Lemberg  <wl@gnu.org>

	[sfnt] Don't provide (completely) broken strike data.

	FreeType tries to sanitize strike header data; we now reject
	completely broken ones.

	* include/freetype/internal/tttypes.h (TT_FaceRec): New
	`sbit_strike_map' array pointer.

	* src/base/ftobjs.c (FT_Match_Size): Reject matches where either
	width or height would be zero.
	Add tracing message in case of error.

	* src/sfnt/sfobjs.c (sfnt_load_face): Populate `sbit_strike_map',
	only using (more or less) valid strike header data for
	FT_Face's `available_sizes' array.
	(sfnt_done_face): Updated.

	* src/sfnt/ttsbit.c (tt_face_set_sbit_strike): Use
	`sbit_strike_map'.
	(tt_face_load_strike_metrics): Improve tracing.

	* src/truetype/ttdriver.c (tt_size_select): Use `sbit_strike_map'.

2016-09-08  Werner Lemberg  <wl@gnu.org>

	* Version 2.7 released.
	=======================


	Tag sources with `VER-2-7'.

	* docs/VERSION.TXT: Add entry for version 2.7.

	* README, Jamfile (RefDoc), builds/windows/vc2005/freetype.vcproj,
	builds/windows/vc2005/index.html,
	builds/windows/vc2008/freetype.vcproj,
	builds/windows/vc2008/index.html,
	builds/windows/vc2010/freetype.vcxproj,
	builds/windows/vc2010/index.html,
	builds/windows/visualc/freetype.dsp,
	builds/windows/visualc/freetype.vcproj,
	builds/windows/visualc/index.html,
	builds/windows/visualce/freetype.dsp,
	builds/windows/visualce/freetype.vcproj,
	builds/windows/visualce/index.html,
	builds/wince/vc2005-ce/freetype.vcproj,
	builds/wince/vc2005-ce/index.html,
	builds/wince/vc2008-ce/freetype.vcproj,
	builds/wince/vc2008-ce/index.html: s/2.6.5/2.7/, s/265/27/.

	* include/freetype/freetype.h (FREETYPE_MINOR): Set to 7.
	(FREETYPE_PATCH): Set to 0.

	* builds/unix/configure.raw (version_info): Set to 18:6:12.
	* CMakeLists.txt (VERSION_MINOR): Set to 7.
	(VERSION_PATCH): Set to 0.

	* docs/CHANGES: Updated.

2016-09-08  Werner Lemberg  <wl@gnu.org>

	* src/truetype/ttinterp.c: Include `ttgxvar.h'.

	This fixes the `multi' build.

2016-09-08  Werner Lemberg  <wl@gnu.org>

	[autofit] Another improvement to Armenian support.

	Suggested by Hrant H Papazian <hpapazian@gmail.com>.

	* src/autofit/afscript.h: Use better suited characters to derive
	default stem widths.

2016-09-07  Alexei Podtelezhnikov  <apodtele@gmail.com>

	* src/smooth/ftgrays.c (gray_hline): Micro-optimize.

2016-09-06  Alexei Podtelezhnikov  <apodtele@gmail.com>

	[smooth] Operate in absolute bitmap coordinates.

	Simpler bitmap addressing improves performance by 1.5%.

	* src/smooth/ftgrays.c (gray_TWorker): Remove count fields.
	(gray_dump_cells, gray_find_cell, gray_set_cell, gray_hline,
	gray_sweep, gray_convert_glyph, gray_raster_render): Updated.

2016-09-06  Alexei Podtelezhnikov  <apodtele@gmail.com>

	[smooth] Improve contour start (take 2).

	* src/smooth/ftgrays.c (gray_move_to): Call `gray_set_cell' directly
	instead of...
	(gray_start_cell): ... this function, which is removed.
	(gray_convert_glyph): Make initial y-coordinate invalid.

2016-09-06  Werner Lemberg  <wl@gnu.org>

	[type1] MM fonts support exactly zero named instances (#48748).

	* src/type1/t1load.c (T1_Get_MM_Var): Set `num_namedstyles' to zero.

2016-09-06  Jonathan Kew  <jfkthame@gmail.com>

	[cff] Fix uninitialized memory.

	Problem reported as

	  https://bugzilla.mozilla.org/show_bug.cgi?id=1270288

	* src/cff/cf2intrp.c (cf2_interpT2CharString): Initialize `storage'
	array to handle a `get' opcode without a previous `put'.

2016-09-05  Alexei Podtelezhnikov  <apodtele@gmail.com>

	* src/smooth/ftgrays.c (gray_move_to, gray_start_cell): Revert.

2016-09-05  Alexei Podtelezhnikov  <apodtele@gmail.com>

	[smooth] Improve contour start.

	* src/smooth/ftgrays.c (gray_move_to): Call `gray_set_cell' directly
	instead of...
	(gray_start_cell): ... this function, which is removed.

2016-09-05  Werner Lemberg  <wl@gnu.org>

	[cff] Fix memory initialization.

	* src/cff/cf2stack.c (cf2_stack_init): Use `FT_NEW'.  The `Q'
	variants of FreeType's memory allocation macros don't do zeroing.

2016-09-05  Werner Lemberg  <wl@gnu.org>

	[ftrandom] Minor improvements.

	* src/tools/ftrandom/ftrandom.c (_XOPEN_SOURCE): New macro, set to
	500.

	* src/tools/ftrandom/Makefile (CFLAGS): Split off include
	directories to ...
	(INCLUDES): ... this new variable.
	(LDFLAGS): New variable.
	(ftrandom.o, ftrandom): Updated.

2016-09-05  Werner Lemberg  <wl@gnu.org>

	[autofit] Improve Armenian support.

	Thanks to Hrant H Papazian <hpapazian@gmail.com> for help.

	* src/autofit/afblue.dat (AF_BLUE_STRING_ARMENIAN_*): Improve
	selection of characters.

	* src/autofit/afblue.c, src/autofit/afblue.h: Regenerated.

2016-09-04  Werner Lemberg  <wl@gnu.org>

	[ftrandom] Improve Makefile.

	It now supports both a normal build (`./configure && make') and a
	development build (`make devel').

	* src/tools/ftrandom/Makefile (VPATH): Set it so that
	`libfreetype.a' gets searched in both `objs' (for the development
	build) and `objs/.libs' (for a normal build which uses libtool).
	(LIBS): Add missing libraries.
	(ftrandom.o): New rule.
	(ftrandom): Use automatic variables.

2016-09-03  Werner Lemberg  <wl@gnu.org>

	[truetype] More fixes for handling of GX deltas.

	Problems reported by Bob Taylor <Bob.Taylor@monotype.com>.

	* src/truetype/ttgxvar.c (TT_Vary_Apply_Glyph_Deltas): Fix rough
	sanity test for glyph variation array header size.
	Always set stream position before reading packed x and y deltas.
	Fix thinko w.r.t. `localpoints' array.

2016-09-03  Werner Lemberg  <wl@gnu.org>

	[ftrandom] Various fixes.

	* src/tools/ftrandom/ftrandom.c (GOOD_FONTS_DIR): Provide better
	default.
	(error_fraction): Make it of type `double' to work as advertized –
	this was completely broken.
	Update all related code.
	(error_count, fcnt): Make it unsigned to fix compiler warnings.
	Update all related code.
	(fontlist): Change `len' member to `long' to fix compiler warnings.
	(FT_MoveTo, FT_LineTo, FT_ConicTo, FT_CubicTo, abort_test): Tag
	unused variables.
	(TestFace, FindFonts, copyfont, do_test): Fix compiler warnings.
	(ExecuteTest): Ditto.
	Call `FT_Done_FreeType'.
	(getErrorCnt): Replace `ceil' with an ordinary cast to `unsigned
	int'.
	(usage): Improve output.
	(main): Fix compiler warnings.

	* src/tools/ftrandom/README: Updated.

2016-09-03  Werner Lemberg  <wl@gnu.org>

	[base] Avoid negative bitmap strike dimensions (#48985).

	* src/base/ftobjs.c (FT_Open_Face): Check whether negation was
	actually successful.  For example, this can fail for value
	-32768 if the type is `signed short'.  If there are problems,
	disable the strike.

2016-09-03  Werner Lemberg  <wl@gnu.org>

	[cff] Avoid null pointer passed to FT_MEM_COPY (#48984).

	* src/cff/cffload.c (cff_index_get_name): Check `byte_len'.

2016-09-02  Werner Lemberg  <wl@gnu.org>

	[unix] Enable 64bit support in file system access (#48962).

	* builds/unix/configure.raw: Call `AC_SYS_LARGEFILE'.

2016-09-02  Werner Lemberg  <wl@gnu.org>

	[sfnt] Avoid left shift of negative value (#48980).

	* src/sfnt/ttsbit.c (tt_sbit_decoder_load_bit_aligned): Use unsigned
	constant.

2016-09-02  Werner Lemberg  <wl@gnu.org>

	* src/smooth/ftgrays.c (gray_hline): Fix clang compiler warnings.

2016-09-02  Werner Lemberg  <wl@gnu.org>

	Some preparations for the next release.

	* include/freetype/config/ftoption.h
	(TT_CONFIG_OPTION_SUBPIXEL_HINTING): Enable.

	* docs/CHANGES: Updated.

2016-09-01  Alexei Podtelezhnikov  <apodtele@gmail.com>

	[smooth] Simplify span rendering more.

	It turns out that there is significant cost associated with `FT_Span'
	creation and calls to `gray_render_span' because it happens so
	frequently. This removes these steps from our internal use but leaves
	it alone for `FT_RASTER_FLAG_DIRECT" to preserve API. The speed gain
	is about 5%.

	* src/smooth/ftgrays.c (gray_render_span): Removed. The code is
	migrated to...
	(gray_hline): ... here.

2016-08-30  Alexei Podtelezhnikov  <apodtele@gmail.com>

	[smooth] Streamline pixmap drawing a bit more.

	Zero coverage is unlikely (1 out of 256) to warrant checking. This
	gives 0.5% speed improvement in rendering simple glyphs.

	* src/smooth/ftgrays.c (gray_hline, gray_render_span): Remove checks.

2016-08-29  Alexei Podtelezhnikov  <apodtele@gmail.com>

	[smooth] Streamline pixmap drawing.

	This gives 2% speed improvement in rendering simple glyphs.

	* src/smooth/ftgrays.c (TPixmap): Reduced pixmap descriptor with a
	pointer to its bottom-left and pitch to be used in...
	(gray_TWorker): ... here.
	(gray_render_span): Move pixmap flow check from here...
	(gray_raster_render): .. to here.

2016-08-27  Alexei Podtelezhnikov  <apodtele@gmail.com>

	[smooth] Reduce stack of band boundaries.

	* src/smooth/ftgrays.c (gray_TBand): Removed.
	(gray_convert_glyph): Updated to stack band boundaries concisely.

2016-08-26  Werner Lemberg  <wl@gnu.org>

	* src/cid/cidload.c (cid_face_open): Improve handling of `SDBytes'.

2016-08-26  Werner Lemberg  <wl@gnu.org>

	[cid] Fix commit from 2016-05-16.

	* src/cid/cidparse.c (cid_parser_new): Fix off-by-one errors.

2016-08-26  Werner Lemberg  <wl@gnu.org>

	[sfnt] Cache offset and size to bitmap data table.

	This commit avoids `EBDT' and friends being looked up again and
	again while loading a single embedded bitmap.

	* include/freetype/internal/tttypes.h (TT_FaceRec)
	[TT_CONFIG_OPTION_EMBEDDED_BITMAPS]: New fields `ebdt_start' and
	`ebdt_size'.

	* src/sfnt/ttsbit.c (tt_sbit_decoder_init): Move table lookup to ...
	(tt_face_load_sbit): ... this function; also store the table size
	and offset.

2016-08-26  Alexei Podtelezhnikov  <apodtele@gmail.com>

	* src/smooth/ftgrays.c (gray_raster_render): Minor tweaks.

2016-08-26  Werner Lemberg  <wl@gnu.org>

	[type1] Fix heap buffer overflow.

	Reported as

	  https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=36

	* src/type1/t1load.c (parse_charstrings): Reject fonts that don't
	contain glyph names.

2016-08-25  Werner Lemberg  <wl@gnu.org>

	[sfnt] Fix previous commit (#48901).

	* src/sfnt/ttcmap.c (tt_cmap4_char_map_binary): Thinkos.

2016-08-25  Werner Lemberg  <wl@gnu.org>

	[sfnt] Speed up handling of invalid format 4 cmaps.

	* src/sfnt/ttcmap.c (tt_cmap4_next, tt_cmap4_char_map_binary): Add
	tests for `num_glyph' from `tt_cmap4_char_map_linear'.

2016-08-25  Werner Lemberg  <wl@gnu.org>

	* include/freetype/internal/ftdriver.h: Remove unused typedefs.

2016-08-22  Alexei Podtelezhnikov  <apodtele@gmail.com>

	[smooth] Simplify span rendering.

	This removes unnecessary complexity of span merging and buffering.
	Instead, the spans are rendered as they come, speeding up the
	rendering by about 5% as a result.

	* src/smooth/ftgrays.c [FT_MAX_GRAY_SPANS]: Macro removed.
	(gray_TWorker): Remove span buffer and related fields.
	(gray_sweep, gray_hline): Updated.

	* include/freetype/ftimage.h: Remove documentation note about
	`FT_MAX_GRAY_SPANS', which was never in `ftoption.h' and is now gone.

2016-08-16  Werner Lemberg  <wl@gnu.org>

	[truetype] Fix `MPS' instruction.

	According to Greg Hitchcock, MPS in DWrite really returns the point
	size.

	* src/truetype/ttobjs.h (TT_SizeRec): Add `point_size' member.

	* src/truetype/ttdriver.c (tt_size_request): Set `point_size'.

	* src/truetype/ttinterp.h (TT_ExecContextRec): Add `pointSize'
	member.

	* src/truetype/ttinterp.c (TT_Load_Context): Updated.
	(Ins_MPS): Fix instruction.

2016-08-16  Werner Lemberg  <wl@gnu.org>

	[lzw] Optimize last commit.

	* src/lzw/ftzopen.c (ft_lzwstate_get_code): Move check into
	conditional clause.

2016-08-16  Werner Lemberg  <wl@gnu.org>

	[lzw] Avoid invalid left shift.

	Reported as

	  https://bugzilla.mozilla.org/show_bug.cgi?id=1295366

	* src/lzw/ftzopen.c (ft_lzwstate_get_code): Limit `num_bits'.

2016-08-16  Werner Lemberg  <wl@gnu.org>

	[lzw] Avoid buffer overrun.

	Reported as

	  https://bugzilla.mozilla.org/show_bug.cgi?id=1273283

	* src/lzw/ftzopen.c (ft_lzwstate_refill): Ensure `buf_size' doesn't
	underflow.

2016-08-16  Werner Lemberg  <wl@gnu.org>

	[truetype] Fix compiler warning.

	* src/truetype/ttgload.c (load_truetype_glyph): Add cast.

2016-08-13  Werner Lemberg  <wl@gnu.org>

	[winfonts] Avoid zero bitmap width and height.

	Reported as

	  https://bugzilla.mozilla.org/show_bug.cgi?id=1272173

	* src/winfonts/winfnt.c (FNT_Face_Init): Check zero pixel height.
	(FNT_Load_Glyph): Check for zero pitch.

2016-08-11  Alexei Podtelezhnikov  <apodtele@gmail.com>

	* src/truetype/ttinterp.c (Pop_Push_Count): Revert changes.

2016-08-11  Alexei Podtelezhnikov  <apodtele@gmail.com>

	* src/truetype/ttinterp.c (TT_RunIns): Minor and formatting.

2016-08-11  Alexei Podtelezhnikov  <apodtele@gmail.com>

	* src/truetype/ttinterp.c (Pop_Push_Count): Fix some entries.

2016-08-10  Peter Klotz  <Peter.Klotz@ith-icoserve.com>

	* src/smooth/ftgrays.c (gray_hline): Fix uninitialized access.

2016-08-10  Werner Lemberg  <wl@gnu.org>

	[sfnt] Use correct type for `italicAngle' field (#48732).

	* src/sfnt/ttload.c (tt_face_load_post): Fix types.

2016-08-06  Jon Spencer  <jon@jonspencer.ca>

	[sfnt] Fix `FT_Get_Advance' for bitmap strikes.

	`FT_Get_Advance' returns 0 for bitmap fonts.  It first gets the
	advance value from the font table and then scales it by the
	`font->size->metrics->x_scale' field.  But `FT_Select_Size' doesn't
	set that value for bitmap fonts and the advance gets scaled to zero.

	Taken from

	  https://github.com/behdad/harfbuzz/issues/252

	* src/sfnt/ttsbit.c (tt_face_load_strike_metrics)
	<TT_SBIT_TABLE_TYPE_EBLC>: Set scale values.

2016-08-06  Behdad Esfahbod  <behdad@behdad.org>

	[truetype] Fix GX variation handling of composites.

	* src/truetype/ttgload.c (load_truetype_glyph)
	[TT_CONFIG_OPTION_GX_VAR_SUPPORT]: Check `ARGS_ARE_XY_VALUES' flag.

2016-08-05  Alexei Podtelezhnikov  <apodtele@gmail.com>

	[smooth] Minor refactoring.

	* src/smooth/ftgrays.c (gray_render_scanline, gray_render_line):
	Updated.

2016-07-29  Werner Lemberg  <wl@gnu.org>

	[sfnt, truetype] Don't abort on invalid `maxComponentDepth'.

	Since 2016-05-16 we detect infinite recursion directly.

	* src/sfnt/ttload.c (tt_face_load_maxp): Don't adjust
	`maxComponentDepth'.
	* src/truetype/ttgload.c (load_truetype_glyph): Don't abort if
	`maxComponentDepth' is not valid.  Instead, simply adjust its value
	and emit a tracing message.

2016-07-26  Werner Lemberg  <wl@gnu.org>

	* src/autofit/aflatin.c (af_latin_metrics_scale_dim): Minor.

	No functional change.

2016-07-22  Hin-Tak Leung  <htl10@users.sourceforge.net>

	[truetype] Record the end of IDEFs.

	To match the logic in FDEF.  The value of the end is only used for
	bound-checking in `Ins_JMPR', so it may not have been obvious that
	it was not recorded.  Tested (as part of Font Validator 2.0) all the
	fonts on Fedora and did not see any change.

	* src/truetype/ttinterp.c (Ins_IDEF): Updated.

2016-07-19  Werner Lemberg  <wl@gnu.org>

	[truetype] Sanitizer fix, second try.

	* src/truetype/ttgxvar.c (ft_var_readpackedpoints): Fix boundary
	tests and use only one slot more.

2016-07-19  Werner Lemberg  <wl@gnu.org>

	[truetype] Sanitizer fix.

	* src/truetype/ttgxvar.c (ft_var_readpackedpoints): Increase array
	to fix nested loops.

2016-07-18  Werner Lemberg  <wl@gnu.org>

	[truetype] Make GETDATA work only for GX fonts.

	* src/truetype/ttinterp.c (opcode_name): Updated.
	(Ins_GETDATA): Only define for `TT_CONFIG_OPTION_GX_VAR_SUPPORT'.
	(TT_RunIns): Updated.

2016-07-17  Werner Lemberg  <wl@gnu.org>

	[truetype] Add support for Apple's

	  GETDATA[], opcode 0x92

	bytecode instruction.  It always returns 17, and we have absolutely
	no idea what it is good for...

	* src/truetype/ttinterp.c (Pop_Push_Count, opcode_name): Updated.
	(Ins_GETDATA): New function.
	(TT_RunIns): Add it.

2016-07-16  Werner Lemberg  <wl@gnu.org>

	[truetype] Add bytecode support for GX variation fonts.

	This commit implements undocumented (but confirmed) stuff from
	Apple's old bytecode engine.

	  GETVARIATION[], opcode 0x91
	    This opcode pushes normalized variation coordinates for all axes
	    onto the stack (in 2.14 format).  Coordinate of first axis gets
	    pushed first.

	  GETINFO[], selector bit 3
	    If GX variation support is enabled, bit 10 of the result is set
	    to 1.

	* src/truetype/ttinterp.c: Include FT_MULTIPLE_MASTERS_H.
	(opcode_name) [TT_CONFIG_OPTION_GX_VAR_SUPPORT]: Updated.
	(Ins_GETINFO) [TT_CONFIG_OPTION_GX_VAR_SUPPORT]: Handle selector
	bit 3, checking support for variation glyph hinting.
	(Ins_GETVARIATION) [TT_CONFIG_OPTION_GX_VAR_SUPPORT]: New function
	to implement opcode 0x91.
	(TT_RunIns) [TT_CONFIG_OPTION_GX_VAR_SUPPORT]: Handle opcode 0x91.

2016-07-16  Werner Lemberg  <wl@gnu.org>

	[truetype] Fix GETINFO bytecode instruction.

	* src/truetype/ttinterp.c (Ins_GETINFO): Fix return value for
	stretching information.

2016-07-16  Behdad Esfahbod  <behdad@behdad.org>

	[truetype] Make all glyphs in `Zycon' GX font work.

	* src/truetype/ttgxvar.c (ft_var_readpackedpoints): Fix boundary
	tests.

2016-07-16  Werner Lemberg  <wl@gnu.org>

	[truetype] Fix GX delta tracing.

	* src/truetype/ttgxvar.c (TT_Vary_Apply_Glyph_Deltas): Trace
	relative point movements.

2016-07-16  Behdad Esfahbod  <behdad@behdad.org>

	[truetype] More fixes for GX.

	This finally fixes the rendering of the cyclist and the lizard in
	the `Zycon' font.

	* src/truetype/ttgxvar.c (ft_var_readpackedpoints): `first' point
	index is always cumulative.

	(tt_handle_deltas): Rename to...
	(tt_interpolate_deltas): ... This.
	Add new parameter for output point array.
	Update caller.

	(TT_Vary_Apply_Glyph_Deltas): Add `points_out' array; it now holds
	the intermediate results of `tt_interpolate_deltas' that are to be
	added to `outline->points'.

2016-07-15  Werner Lemberg  <wl@gnu.org>

	* src/autofit/aflatin.c (af_latin_hints_compute_segments): Thinko.

	`max_pos' is always larger than `min_pos' so `FT_ABS' is not needed.

	Reported by Alexei.

2016-07-16  Nikolaus Waxweiler  <madigens@gmail.com>

	* src/truetype/ttinterp.c (Ins_MIRP): Fix copy-and-paste error.

	Problem reported by Hin-Tak Leung.

2016-07-15  Werner Lemberg  <wl@gnu.org>

	[autofit] Update and improve segment and edge tracing.

	* src/autofit/afhints.c (af_glyph_hints_dump_segments): Trace
	`delta' also.
	Don't show first point of segment as a replacement for `pos'; this
	is (a) misleading, since the difference to `pos' can be almost
	arbitrarily large in corner cases, and (b) it is better to have all
	segment data in font units instead of a single value given in output
	space coordinates.
	Improve layout.
	(af_glyph_hints_dump_edges): Show px->units and units->px conversion
	values for convenience.
	Improve layout.

2016-07-15  Werner Lemberg  <wl@gnu.org>

	[autofit] For edges, reject segments wider than 1px (#41334).

	* src/autofit/afhints.h (AF_SegmentRec): New member `delta'.

	* src/autofit/aflatin.c (af_latin_hints_compute_segments): Compute
	`delta'.
	(af_latin_hints_compute_edges): Reject segments with a delta larger
	than 0.5px.

2016-07-14  Werner Lemberg  <wl@gnu.org>

	* include/freetype/freetype.h (FT_IS_NAMED_INSTANCE): New macro.

2016-07-14  Werner Lemberg  <wl@gnu.org>

	[sfnt] Fix `face_index' value in `FT_Face' for named instances.

	* src/sfnt/sfobjs.c (sfnt_init_face): Don't strip off higher 16bits.

2016-07-14  Werner Lemberg  <wl@gnu.org>

	* src/truetype/ttgxvar.c (TT_Vary_Apply_Glyph_Deltas): Fix tracing.

2016-07-14  Behdad Esfahbod  <behdad@behdad.org>

	[truetype] Fix gxvar delta interpolation.

	The coordinates of the base font should be used for interpolation
	purposes, NOT the current points (i.e., the result of accumulation
	of previous deltas).

	* src/truetype/ttgxvar.c (TT_Vary_Apply_Glyph_Deltas): Initialize
	`points_org' before looping over all tuples.


----------------------------------------------------------------------------

Copyright 2016-2018 by
David Turner, Robert Wilhelm, and Werner Lemberg.

This file is part of the FreeType project, and may only be used, modified,
and distributed under the terms of the FreeType project license,
LICENSE.TXT.  By continuing to use, modify, or distribute this file you
indicate that you have read the license and understand and accept it
fully.


Local Variables:
version-control: never
coding: utf-8
End: