diff options
author | marha <marha@users.sourceforge.net> | 2015-02-22 14:47:01 +0100 |
---|---|---|
committer | marha <marha@users.sourceforge.net> | 2015-02-22 14:47:01 +0100 |
commit | 7785694244cdfc5939ca4754cab4e08bd6980f99 (patch) | |
tree | e317021c83941073a12d69494425f0dbcbc9eaf8 /freetype/src/cff | |
parent | c9aad1ae6227c434d480d1d3aa8eae3c3c910c18 (diff) | |
download | vcxsrv-7785694244cdfc5939ca4754cab4e08bd6980f99.tar.gz vcxsrv-7785694244cdfc5939ca4754cab4e08bd6980f99.tar.bz2 vcxsrv-7785694244cdfc5939ca4754cab4e08bd6980f99.zip |
Upgraded to freetype 2.5.5
Diffstat (limited to 'freetype/src/cff')
-rw-r--r-- | freetype/src/cff/cf2font.c | 39 | ||||
-rw-r--r-- | freetype/src/cff/cf2ft.c | 48 | ||||
-rw-r--r-- | freetype/src/cff/cf2hints.c | 17 | ||||
-rw-r--r-- | freetype/src/cff/cf2intrp.c | 21 | ||||
-rw-r--r-- | freetype/src/cff/cffcmap.c | 10 | ||||
-rw-r--r-- | freetype/src/cff/cffdrivr.c | 4 | ||||
-rw-r--r-- | freetype/src/cff/cffgload.c | 41 | ||||
-rw-r--r-- | freetype/src/cff/cffobjs.c | 44 | ||||
-rw-r--r-- | freetype/src/cff/cffparse.c | 2 |
9 files changed, 131 insertions, 95 deletions
diff --git a/freetype/src/cff/cf2font.c b/freetype/src/cff/cf2font.c index 6e99dc2f0..83fd348f2 100644 --- a/freetype/src/cff/cf2font.c +++ b/freetype/src/cff/cf2font.c @@ -36,6 +36,9 @@ /***************************************************************************/ +#include <ft2build.h> +#include FT_INTERNAL_CALC_H + #include "cf2ft.h" #include "cf2glue.h" @@ -105,6 +108,7 @@ /* adjusting for emRatio converts darkenAmount to character */ /* space (font units). */ CF2_Fixed stemWidthPer1000, scaledStem; + FT_Int logBase2; *darkenAmount = 0; @@ -131,26 +135,33 @@ /* convert from true character space to 1000 unit character space; */ /* add synthetic emboldening effect */ - /* we have to assure that the computation of `scaledStem' */ - /* and `stemWidthPer1000' don't overflow */ + /* `stemWidthPer1000' will not overflow for a legitimate font */ stemWidthPer1000 = FT_MulFix( stemWidth + boldenAmount, emRatio ); - if ( emRatio > CF2_FIXED_ONE && - stemWidthPer1000 <= ( stemWidth + boldenAmount ) ) - { - stemWidthPer1000 = 0; /* to pacify compiler */ - scaledStem = cf2_intToFixed( x4 ); - } + /* `scaledStem' can easily overflow, so we must clamp its maximum */ + /* value; the test doesn't need to be precise, but must be */ + /* conservative. The clamp value (default 2333) where */ + /* `darkenAmount' is zero is well below the overflow value of */ + /* 32767. */ + /* */ + /* FT_MSB computes the integer part of the base 2 logarithm. The */ + /* number of bits for the product is 1 or 2 more than the sum of */ + /* logarithms; remembering that the 16 lowest bits of the fraction */ + /* are dropped this is correct to within a factor of almost 4. */ + /* For example, 0x80.0000 * 0x80.0000 = 0x4000.0000 is 23+23 and */ + /* is flagged as possible overflow because 0xFF.FFFF * 0xFF.FFFF = */ + /* 0xFFFF.FE00 is also 23+23. */ + + logBase2 = FT_MSB( (FT_UInt32)stemWidthPer1000 ) + + FT_MSB( (FT_UInt32)ppem ); + + if ( logBase2 >= 46 ) + /* possible overflow */ + scaledStem = cf2_intToFixed( x4 ); else - { scaledStem = FT_MulFix( stemWidthPer1000, ppem ); - if ( ppem > CF2_FIXED_ONE && - scaledStem <= stemWidthPer1000 ) - scaledStem = cf2_intToFixed( x4 ); - } - /* now apply the darkening parameters */ if ( scaledStem < cf2_intToFixed( x1 ) ) diff --git a/freetype/src/cff/cf2ft.c b/freetype/src/cff/cf2ft.c index cb8d31c53..ebba4694c 100644 --- a/freetype/src/cff/cf2ft.c +++ b/freetype/src/cff/cf2ft.c @@ -142,6 +142,8 @@ cf2_builder_lineTo( CF2_OutlineCallbacks callbacks, const CF2_CallbackParams params ) { + FT_Error error; + /* downcast the object pointer */ CF2_Outline outline = (CF2_Outline)callbacks; CFF_Builder* builder; @@ -156,15 +158,27 @@ { /* record the move before the line; also check points and set */ /* `path_begun' */ - cff_builder_start_point( builder, - params->pt0.x, - params->pt0.y ); + error = cff_builder_start_point( builder, + params->pt0.x, + params->pt0.y ); + if ( error ) + { + if ( !*callbacks->error ) + *callbacks->error = error; + return; + } } /* `cff_builder_add_point1' includes a check_points call for one point */ - cff_builder_add_point1( builder, - params->pt1.x, - params->pt1.y ); + error = cff_builder_add_point1( builder, + params->pt1.x, + params->pt1.y ); + if ( error ) + { + if ( !*callbacks->error ) + *callbacks->error = error; + return; + } } @@ -172,6 +186,8 @@ cf2_builder_cubeTo( CF2_OutlineCallbacks callbacks, const CF2_CallbackParams params ) { + FT_Error error; + /* downcast the object pointer */ CF2_Outline outline = (CF2_Outline)callbacks; CFF_Builder* builder; @@ -186,13 +202,25 @@ { /* record the move before the line; also check points and set */ /* `path_begun' */ - cff_builder_start_point( builder, - params->pt0.x, - params->pt0.y ); + error = cff_builder_start_point( builder, + params->pt0.x, + params->pt0.y ); + if ( error ) + { + if ( !*callbacks->error ) + *callbacks->error = error; + return; + } } /* prepare room for 3 points: 2 off-curve, 1 on-curve */ - cff_check_points( builder, 3 ); + error = cff_check_points( builder, 3 ); + if ( error ) + { + if ( !*callbacks->error ) + *callbacks->error = error; + return; + } cff_builder_add_point( builder, params->pt1.x, diff --git a/freetype/src/cff/cf2hints.c b/freetype/src/cff/cf2hints.c index 5853d7758..040d193f3 100644 --- a/freetype/src/cff/cf2hints.c +++ b/freetype/src/cff/cf2hints.c @@ -304,9 +304,6 @@ cf2_hintmap_map( CF2_HintMap hintmap, CF2_Fixed csCoord ) { - FT_ASSERT( hintmap->isValid ); /* must call Build before Map */ - FT_ASSERT( hintmap->lastIndex < CF2_MAX_HINT_EDGES ); - if ( hintmap->count == 0 || ! hintmap->hinted ) { /* there are no hints; use uniform scale and zero offset */ @@ -317,6 +314,7 @@ /* start linear search from last hit */ CF2_UInt i = hintmap->lastIndex; + FT_ASSERT( hintmap->lastIndex < CF2_MAX_HINT_EDGES ); /* search up */ while ( i < hintmap->count - 1 && @@ -794,9 +792,12 @@ maskPtr = cf2_hintmask_getMaskPtr( &tempHintMask ); /* use the hStem hints only, which are first in the mask */ - /* TODO: compare this to cffhintmaskGetBitCount */ bitCount = cf2_arrstack_size( hStemHintArray ); + /* Defense-in-depth. Should never return here. */ + if ( bitCount > hintMask->bitCount ) + return; + /* synthetic embox hints get highest priority */ if ( font->blues.doEmBoxHints ) { @@ -1560,7 +1561,7 @@ { /* -y */ *x = -glyphpath->xOffset; - *y = glyphpath->xOffset; + *y = glyphpath->yOffset; } else { @@ -1691,7 +1692,8 @@ if ( glyphpath->elemIsQueued ) { - FT_ASSERT( cf2_hintmap_isValid( &glyphpath->hintMap ) ); + FT_ASSERT( cf2_hintmap_isValid( &glyphpath->hintMap ) || + glyphpath->hintMap.count == 0 ); cf2_glyphpath_pushPrevElem( glyphpath, &glyphpath->hintMap, @@ -1777,7 +1779,8 @@ if ( glyphpath->elemIsQueued ) { - FT_ASSERT( cf2_hintmap_isValid( &glyphpath->hintMap ) ); + FT_ASSERT( cf2_hintmap_isValid( &glyphpath->hintMap ) || + glyphpath->hintMap.count == 0 ); cf2_glyphpath_pushPrevElem( glyphpath, &glyphpath->hintMap, diff --git a/freetype/src/cff/cf2intrp.c b/freetype/src/cff/cf2intrp.c index 5610917cc..a26960669 100644 --- a/freetype/src/cff/cf2intrp.c +++ b/freetype/src/cff/cf2intrp.c @@ -4,7 +4,7 @@ /* */ /* Adobe's CFF Interpreter (body). */ /* */ -/* Copyright 2007-2013 Adobe Systems Incorporated. */ +/* Copyright 2007-2014 Adobe Systems Incorporated. */ /* */ /* This software, and all works of authorship, whether in source or */ /* object code form as indicated by the copyright notice(s) included */ @@ -593,8 +593,11 @@ /* never add hints after the mask is computed */ if ( cf2_hintmask_isValid( &hintMask ) ) + { FT_TRACE4(( "cf2_interpT2CharString:" " invalid horizontal hint mask\n" )); + break; + } cf2_doStems( font, opStack, @@ -614,8 +617,11 @@ /* never add hints after the mask is computed */ if ( cf2_hintmask_isValid( &hintMask ) ) + { FT_TRACE4(( "cf2_interpT2CharString:" " invalid vertical hint mask\n" )); + break; + } cf2_doStems( font, opStack, @@ -1141,15 +1147,16 @@ /* `cf2_hintmask_read' (which also traces the mask bytes) */ FT_TRACE4(( op1 == cf2_cmdCNTRMASK ? " cntrmask" : " hintmask" )); - /* if there are arguments on the stack, there this is an */ - /* implied cf2_cmdVSTEMHM */ - if ( cf2_stack_count( opStack ) != 0 ) + /* never add hints after the mask is computed */ + if ( cf2_stack_count( opStack ) > 1 && + cf2_hintmask_isValid( &hintMask ) ) { - /* never add hints after the mask is computed */ - if ( cf2_hintmask_isValid( &hintMask ) ) - FT_TRACE4(( "cf2_interpT2CharString: invalid hint mask\n" )); + FT_TRACE4(( "cf2_interpT2CharString: invalid hint mask\n" )); + break; } + /* if there are arguments on the stack, there this is an */ + /* implied cf2_cmdVSTEMHM */ cf2_doStems( font, opStack, &vStemHintArray, diff --git a/freetype/src/cff/cffcmap.c b/freetype/src/cff/cffcmap.c index f6e03c642..52248b2b9 100644 --- a/freetype/src/cff/cffcmap.c +++ b/freetype/src/cff/cffcmap.c @@ -33,12 +33,15 @@ /*************************************************************************/ FT_CALLBACK_DEF( FT_Error ) - cff_cmap_encoding_init( CFF_CMapStd cmap ) + cff_cmap_encoding_init( CFF_CMapStd cmap, + FT_Pointer pointer ) { TT_Face face = (TT_Face)FT_CMAP_FACE( cmap ); CFF_Font cff = (CFF_Font)face->extra.data; CFF_Encoding encoding = &cff->encoding; + FT_UNUSED( pointer ); + cmap->gids = encoding->codes; @@ -135,7 +138,8 @@ FT_CALLBACK_DEF( FT_Error ) - cff_cmap_unicode_init( PS_Unicodes unicodes ) + cff_cmap_unicode_init( PS_Unicodes unicodes, + FT_Pointer pointer ) { TT_Face face = (TT_Face)FT_CMAP_FACE( unicodes ); FT_Memory memory = FT_FACE_MEMORY( face ); @@ -143,6 +147,8 @@ CFF_Charset charset = &cff->charset; FT_Service_PsCMaps psnames = (FT_Service_PsCMaps)cff->psnames; + FT_UNUSED( pointer ); + /* can't build Unicode map for CID-keyed font */ /* because we don't know glyph names. */ diff --git a/freetype/src/cff/cffdrivr.c b/freetype/src/cff/cffdrivr.c index dde7d4488..3e8898e34 100644 --- a/freetype/src/cff/cffdrivr.c +++ b/freetype/src/cff/cffdrivr.c @@ -4,7 +4,7 @@ /* */ /* OpenType font driver implementation (body). */ /* */ -/* Copyright 1996-2013 by */ +/* Copyright 1996-2014 by */ /* David Turner, Robert Wilhelm, and Werner Lemberg. */ /* */ /* This file is part of the FreeType project, and may only be used, */ @@ -753,7 +753,7 @@ FT_Module_Interface result; - /* CFF_SERVICES_GET derefers `library' in PIC mode */ + /* CFF_SERVICES_GET dereferences `library' in PIC mode */ #ifdef FT_CONFIG_OPTION_PIC if ( !driver ) return NULL; diff --git a/freetype/src/cff/cffgload.c b/freetype/src/cff/cffgload.c index c8e9f9124..758a3d3bb 100644 --- a/freetype/src/cff/cffgload.c +++ b/freetype/src/cff/cffgload.c @@ -4,7 +4,7 @@ /* */ /* OpenType Glyph Loader (body). */ /* */ -/* Copyright 1996-2013 by */ +/* Copyright 1996-2014 by */ /* David Turner, Robert Wilhelm, and Werner Lemberg. */ /* */ /* This file is part of the FreeType project, and may only be used, */ @@ -703,7 +703,7 @@ /* callback function. */ if ( face->root.internal->incremental_interface ) { - FT_Data data; + FT_Data data; data.pointer = *pointer; @@ -1989,9 +1989,6 @@ } else { - if ( !error ) - error = FT_Err_Ok; - cff_builder_close_contour( builder ); /* close hints recording session */ @@ -2002,10 +1999,12 @@ goto Syntax_Error; /* apply hints to the loaded glyph outline now */ - hinter->apply( hinter->hints, - builder->current, - (PSH_Globals)builder->hints_globals, - decoder->hint_mode ); + error = hinter->apply( hinter->hints, + builder->current, + (PSH_Globals)builder->hints_globals, + decoder->hint_mode ); + if ( error ) + goto Fail; } /* add current outline to the glyph slot */ @@ -2711,10 +2710,10 @@ /* compute linear advance widths */ - ( (SFNT_Service)face->sfnt )->get_metrics( face, 0, - glyph_index, - &dummy, - &advance ); + (void)( (SFNT_Service)face->sfnt )->get_metrics( face, 0, + glyph_index, + &dummy, + &advance ); glyph->root.linearHoriAdvance = advance; has_vertical_info = FT_BOOL( @@ -2724,10 +2723,10 @@ /* get the vertical metrics from the vtmx table if we have one */ if ( has_vertical_info ) { - ( (SFNT_Service)face->sfnt )->get_metrics( face, 1, - glyph_index, - &dummy, - &advance ); + (void)( (SFNT_Service)face->sfnt )->get_metrics( face, 1, + glyph_index, + &dummy, + &advance ); glyph->root.linearVertAdvance = advance; } else @@ -2964,10 +2963,10 @@ FT_UShort vertAdvance = 0; - ( (SFNT_Service)face->sfnt )->get_metrics( face, 1, - glyph_index, - &vertBearingY, - &vertAdvance ); + (void)( (SFNT_Service)face->sfnt )->get_metrics( face, 1, + glyph_index, + &vertBearingY, + &vertAdvance ); metrics->vertBearingY = vertBearingY; metrics->vertAdvance = vertAdvance; } diff --git a/freetype/src/cff/cffobjs.c b/freetype/src/cff/cffobjs.c index cac4ac2bd..da3d0190f 100644 --- a/freetype/src/cff/cffobjs.c +++ b/freetype/src/cff/cffobjs.c @@ -4,7 +4,7 @@ /* */ /* OpenType objects manager (body). */ /* */ -/* Copyright 1996-2013 by */ +/* Copyright 1996-2014 by */ /* David Turner, Robert Wilhelm, and Werner Lemberg. */ /* */ /* This file is part of the FreeType project, and may only be used, */ @@ -943,16 +943,6 @@ if ( pure_cff && cff->top_font.font_dict.cid_registry != 0xFFFFU ) goto Exit; -#ifdef FT_MAX_CHARMAP_CACHEABLE - if ( nn + 1 > FT_MAX_CHARMAP_CACHEABLE ) - { - FT_ERROR(( "cff_face_init: no Unicode cmap is found, " - "and too many subtables (%d) to add synthesized cmap\n", - nn )); - goto Exit; - } -#endif - /* we didn't find a Unicode charmap -- synthesize one */ cmaprec.face = cffface; cmaprec.platform_id = TT_PLATFORM_MICROSOFT; @@ -973,15 +963,6 @@ cffface->charmap = cffface->charmaps[nn]; Skip_Unicode: -#ifdef FT_MAX_CHARMAP_CACHEABLE - if ( nn > FT_MAX_CHARMAP_CACHEABLE ) - { - FT_ERROR(( "cff_face_init: Unicode cmap is found, " - "but too many preceding subtables (%d) to access\n", - nn - 1 )); - goto Exit; - } -#endif if ( encoding->count > 0 ) { FT_CMap_Class clazz; @@ -1055,22 +1036,23 @@ CFF_Driver driver = (CFF_Driver)module; - /* set default property values, cf `ftcffdrv.h' */ + /* set default property values, cf. `ftcffdrv.h' */ #ifdef CFF_CONFIG_OPTION_OLD_ENGINE - driver->hinting_engine = FT_CFF_HINTING_FREETYPE; + driver->hinting_engine = FT_CFF_HINTING_FREETYPE; #else - driver->hinting_engine = FT_CFF_HINTING_ADOBE; + driver->hinting_engine = FT_CFF_HINTING_ADOBE; #endif + driver->no_stem_darkening = FALSE; - driver->darken_params[0] = 500; - driver->darken_params[1] = 400; - driver->darken_params[2] = 1000; - driver->darken_params[3] = 275; - driver->darken_params[4] = 1667; - driver->darken_params[5] = 275; - driver->darken_params[6] = 2333; - driver->darken_params[7] = 0; + driver->darken_params[0] = CFF_CONFIG_OPTION_DARKENING_PARAMETER_X1; + driver->darken_params[1] = CFF_CONFIG_OPTION_DARKENING_PARAMETER_Y1; + driver->darken_params[2] = CFF_CONFIG_OPTION_DARKENING_PARAMETER_X2; + driver->darken_params[3] = CFF_CONFIG_OPTION_DARKENING_PARAMETER_Y2; + driver->darken_params[4] = CFF_CONFIG_OPTION_DARKENING_PARAMETER_X3; + driver->darken_params[5] = CFF_CONFIG_OPTION_DARKENING_PARAMETER_Y3; + driver->darken_params[6] = CFF_CONFIG_OPTION_DARKENING_PARAMETER_X4; + driver->darken_params[7] = CFF_CONFIG_OPTION_DARKENING_PARAMETER_Y4; return FT_Err_Ok; } diff --git a/freetype/src/cff/cffparse.c b/freetype/src/cff/cffparse.c index 91bd5326c..c79ab623d 100644 --- a/freetype/src/cff/cffparse.c +++ b/freetype/src/cff/cffparse.c @@ -188,7 +188,7 @@ } /* Read fraction part, if any. */ - if ( nib == 0xa ) + if ( nib == 0xA ) for (;;) { /* If we entered this iteration with phase == 4, we need */ |