diff options
Diffstat (limited to 'src/3rdparty/freetype/src/truetype/ttgxvar.c')
-rw-r--r-- | src/3rdparty/freetype/src/truetype/ttgxvar.c | 786 |
1 files changed, 472 insertions, 314 deletions
diff --git a/src/3rdparty/freetype/src/truetype/ttgxvar.c b/src/3rdparty/freetype/src/truetype/ttgxvar.c index 6a0edef29b..60a0095b6e 100644 --- a/src/3rdparty/freetype/src/truetype/ttgxvar.c +++ b/src/3rdparty/freetype/src/truetype/ttgxvar.c @@ -4,7 +4,7 @@ * * TrueType GX Font Variation loader * - * Copyright (C) 2004-2022 by + * Copyright (C) 2004-2023 by * David Turner, Robert Wilhelm, Werner Lemberg, and George Williams. * * This file is part of the FreeType project, and may only be used, @@ -42,6 +42,7 @@ #include <ft2build.h> #include <freetype/internal/ftdebug.h> #include FT_CONFIG_CONFIG_H +#include <freetype/internal/ftcalc.h> #include <freetype/internal/ftstream.h> #include <freetype/internal/sfnt.h> #include <freetype/tttags.h> @@ -353,15 +354,24 @@ static void ft_var_load_avar( TT_Face face ) { - FT_Stream stream = FT_FACE_STREAM( face ); - FT_Memory memory = stream->memory; + FT_Error error; + FT_Stream stream = FT_FACE_STREAM( face ); + FT_Memory memory = stream->memory; + FT_Int i, j; + GX_Blend blend = face->blend; GX_AVarSegment segment; - FT_Error error; - FT_Long version; - FT_Long axisCount; - FT_Int i, j; - FT_ULong table_len; + GX_AVarTable table; + + FT_Long version; + FT_Long axisCount; + FT_ULong table_len; + +#ifndef TT_CONFIG_OPTION_NO_BORING_EXPANSION + FT_ULong table_offset; + FT_ULong store_offset; + FT_ULong axisMap_offset; +#endif FT_TRACE2(( "AVAR " )); @@ -374,13 +384,21 @@ return; } +#ifndef TT_CONFIG_OPTION_NO_BORING_EXPANSION + table_offset = FT_STREAM_POS(); +#endif + if ( FT_FRAME_ENTER( table_len ) ) return; version = FT_GET_LONG(); axisCount = FT_GET_LONG(); - if ( version != 0x00010000L ) + if ( version != 0x00010000L +#ifndef TT_CONFIG_OPTION_NO_BORING_EXPANSION + && version != 0x00020000L +#endif + ) { FT_TRACE2(( "bad table version\n" )); goto Exit; @@ -396,10 +414,14 @@ goto Exit; } - if ( FT_QNEW_ARRAY( blend->avar_segment, axisCount ) ) + if ( FT_NEW( blend->avar_table ) ) goto Exit; + table = blend->avar_table; - segment = &blend->avar_segment[0]; + if ( FT_QNEW_ARRAY( table->avar_segment, axisCount ) ) + goto Exit; + + segment = &table->avar_segment[0]; for ( i = 0; i < axisCount; i++, segment++ ) { FT_TRACE5(( " axis %d:\n", i )); @@ -412,9 +434,9 @@ /* it right now since loading the `avar' table is optional. */ for ( j = i - 1; j >= 0; j-- ) - FT_FREE( blend->avar_segment[j].correspondence ); + FT_FREE( table->avar_segment[j].correspondence ); - FT_FREE( blend->avar_segment ); + FT_FREE( table->avar_segment ); goto Exit; } @@ -426,20 +448,51 @@ FT_fdot14ToFixed( FT_GET_SHORT() ); FT_TRACE5(( " mapping %.5f to %.5f\n", - segment->correspondence[j].fromCoord / 65536.0, - segment->correspondence[j].toCoord / 65536.0 )); + (double)segment->correspondence[j].fromCoord / 65536, + (double)segment->correspondence[j].toCoord / 65536 )); } FT_TRACE5(( "\n" )); } +#ifndef TT_CONFIG_OPTION_NO_BORING_EXPANSION + if ( version < 0x00020000L ) + goto Exit; + + axisMap_offset = FT_GET_ULONG(); + store_offset = FT_GET_ULONG(); + + if ( store_offset ) + { + error = tt_var_load_item_variation_store( + face, + table_offset + store_offset, + &table->itemStore ); + if ( error ) + goto Exit; + } + + if ( axisMap_offset ) + { + error = tt_var_load_delta_set_index_mapping( + face, + table_offset + axisMap_offset, + &table->axisMap, + &table->itemStore, + table_len ); + if ( error ) + goto Exit; + } +#endif + + Exit: FT_FRAME_EXIT(); } - static FT_Error - ft_var_load_item_variation_store( TT_Face face, + FT_LOCAL_DEF( FT_Error ) + tt_var_load_item_variation_store( TT_Face face, FT_ULong offset, GX_ItemVarStore itemStore ) { @@ -449,13 +502,15 @@ FT_Error error; FT_UShort format; FT_ULong region_offset; - FT_UInt i, j, k; - FT_UInt wordDeltaCount; - FT_Bool long_words; - GX_Blend blend = face->blend; - GX_ItemVarData varData; + FT_UInt data_count; + FT_UShort axis_count; + FT_UInt region_count; + + FT_UInt i, j, k; + FT_Bool long_words; + GX_Blend blend = face->blend; FT_ULong* dataOffsetArray = NULL; @@ -465,31 +520,31 @@ if ( format != 1 ) { - FT_TRACE2(( "ft_var_load_item_variation_store: bad store format %d\n", + FT_TRACE2(( "tt_var_load_item_variation_store: bad store format %d\n", format )); error = FT_THROW( Invalid_Table ); goto Exit; } /* read top level fields */ - if ( FT_READ_ULONG( region_offset ) || - FT_READ_USHORT( itemStore->dataCount ) ) + if ( FT_READ_ULONG( region_offset ) || + FT_READ_USHORT( data_count ) ) goto Exit; /* we need at least one entry in `itemStore->varData' */ - if ( !itemStore->dataCount ) + if ( !data_count ) { - FT_TRACE2(( "ft_var_load_item_variation_store: missing varData\n" )); + FT_TRACE2(( "tt_var_load_item_variation_store: missing varData\n" )); error = FT_THROW( Invalid_Table ); goto Exit; } /* make temporary copy of item variation data offsets; */ /* we will parse region list first, then come back */ - if ( FT_QNEW_ARRAY( dataOffsetArray, itemStore->dataCount ) ) + if ( FT_QNEW_ARRAY( dataOffsetArray, data_count ) ) goto Exit; - for ( i = 0; i < itemStore->dataCount; i++ ) + for ( i = 0; i < data_count; i++ ) { if ( FT_READ_ULONG( dataOffsetArray[i] ) ) goto Exit; @@ -499,39 +554,40 @@ if ( FT_STREAM_SEEK( offset + region_offset ) ) goto Exit; - if ( FT_READ_USHORT( itemStore->axisCount ) || - FT_READ_USHORT( itemStore->regionCount ) ) + if ( FT_READ_USHORT( axis_count ) || + FT_READ_USHORT( region_count ) ) goto Exit; - if ( itemStore->axisCount != (FT_Long)blend->mmvar->num_axis ) + if ( axis_count != (FT_Long)blend->mmvar->num_axis ) { - FT_TRACE2(( "ft_var_load_item_variation_store:" + FT_TRACE2(( "tt_var_load_item_variation_store:" " number of axes in item variation store\n" )); FT_TRACE2(( " " " and `fvar' table are different\n" )); error = FT_THROW( Invalid_Table ); goto Exit; } + itemStore->axisCount = axis_count; /* new constraint in OpenType 1.8.4 */ - if ( itemStore->regionCount >= 32768U ) + if ( region_count >= 32768U ) { - FT_TRACE2(( "ft_var_load_item_variation_store:" + FT_TRACE2(( "tt_var_load_item_variation_store:" " too many variation region tables\n" )); error = FT_THROW( Invalid_Table ); goto Exit; } - if ( FT_NEW_ARRAY( itemStore->varRegionList, itemStore->regionCount ) ) + if ( FT_NEW_ARRAY( itemStore->varRegionList, region_count ) ) goto Exit; + itemStore->regionCount = region_count; for ( i = 0; i < itemStore->regionCount; i++ ) { GX_AxisCoords axisCoords; - if ( FT_NEW_ARRAY( itemStore->varRegionList[i].axisList, - itemStore->axisCount ) ) + if ( FT_NEW_ARRAY( itemStore->varRegionList[i].axisList, axis_count ) ) goto Exit; axisCoords = itemStore->varRegionList[i].axisList; @@ -555,47 +611,53 @@ /* end of region list parse */ /* use dataOffsetArray now to parse varData items */ - if ( FT_NEW_ARRAY( itemStore->varData, itemStore->dataCount ) ) + if ( FT_NEW_ARRAY( itemStore->varData, data_count ) ) goto Exit; + itemStore->dataCount = data_count; - for ( i = 0; i < itemStore->dataCount; i++ ) + for ( i = 0; i < data_count; i++ ) { - varData = &itemStore->varData[i]; + GX_ItemVarData varData = &itemStore->varData[i]; + + FT_UInt item_count; + FT_UInt word_delta_count; + FT_UInt region_idx_count; + if ( FT_STREAM_SEEK( offset + dataOffsetArray[i] ) ) goto Exit; - if ( FT_READ_USHORT( varData->itemCount ) || - FT_READ_USHORT( wordDeltaCount ) || - FT_READ_USHORT( varData->regionIdxCount ) ) + if ( FT_READ_USHORT( item_count ) || + FT_READ_USHORT( word_delta_count ) || + FT_READ_USHORT( region_idx_count ) ) goto Exit; - long_words = !!( wordDeltaCount & 0x8000 ); - wordDeltaCount &= 0x7FFF; + long_words = !!( word_delta_count & 0x8000 ); + word_delta_count &= 0x7FFF; /* check some data consistency */ - if ( wordDeltaCount > varData->regionIdxCount ) + if ( word_delta_count > region_idx_count ) { FT_TRACE2(( "bad short count %d or region count %d\n", - wordDeltaCount, - varData->regionIdxCount )); + word_delta_count, + region_idx_count )); error = FT_THROW( Invalid_Table ); goto Exit; } - if ( varData->regionIdxCount > itemStore->regionCount ) + if ( region_idx_count > itemStore->regionCount ) { FT_TRACE2(( "inconsistent regionCount %d in varData[%d]\n", - varData->regionIdxCount, + region_idx_count, i )); error = FT_THROW( Invalid_Table ); goto Exit; } /* parse region indices */ - if ( FT_NEW_ARRAY( varData->regionIndices, - varData->regionIdxCount ) ) + if ( FT_NEW_ARRAY( varData->regionIndices, region_idx_count ) ) goto Exit; + varData->regionIdxCount = region_idx_count; for ( j = 0; j < varData->regionIdxCount; j++ ) { @@ -611,54 +673,35 @@ } } - /* Parse delta set. */ - /* */ - /* On input, deltas are (wordDeltaCount + regionIdxCount) bytes */ - /* each if `long_words` isn't set, and twice as much otherwise. */ - /* */ - /* On output, deltas are expanded to `regionIdxCount` shorts each. */ - if ( FT_NEW_ARRAY( varData->deltaSet, - varData->regionIdxCount * varData->itemCount ) ) + /* Parse delta set. */ + /* */ + /* On input, deltas are (word_delta_count + region_idx_count) bytes */ + /* each if `long_words` isn't set, and twice as much otherwise. */ + /* */ + /* On output, deltas are expanded to `region_idx_count` shorts each. */ + if ( FT_NEW_ARRAY( varData->deltaSet, item_count * region_idx_count ) ) goto Exit; + varData->itemCount = item_count; - /* the delta set is stored as a 2-dimensional array of shorts */ - if ( long_words ) + for ( j = 0; j < item_count * region_idx_count; ) { - /* new in OpenType 1.9, currently for 'COLR' table only; */ - /* the deltas are interpreted as 16.16 fixed-point scaling values */ - - /* not supported yet */ - - error = FT_THROW( Invalid_Table ); - goto Exit; - } - else - { - for ( j = 0; j < varData->itemCount * varData->regionIdxCount; ) + if ( long_words ) { - for ( k = 0; k < wordDeltaCount; k++, j++ ) - { - /* read the short deltas */ - FT_Short delta; - - - if ( FT_READ_SHORT( delta ) ) + for ( k = 0; k < word_delta_count; k++, j++ ) + if ( FT_READ_LONG( varData->deltaSet[j] ) ) goto Exit; - - varData->deltaSet[j] = delta; - } - - for ( ; k < varData->regionIdxCount; k++, j++ ) - { - /* read the (signed) byte deltas */ - FT_Char delta; - - - if ( FT_READ_CHAR( delta ) ) + for ( ; k < region_idx_count; k++, j++ ) + if ( FT_READ_SHORT( varData->deltaSet[j] ) ) + goto Exit; + } + else + { + for ( k = 0; k < word_delta_count; k++, j++ ) + if ( FT_READ_SHORT( varData->deltaSet[j] ) ) + goto Exit; + for ( ; k < region_idx_count; k++, j++ ) + if ( FT_READ_CHAR( varData->deltaSet[j] ) ) goto Exit; - - varData->deltaSet[j] = delta; - } } } } @@ -670,8 +713,8 @@ } - static FT_Error - ft_var_load_delta_set_index_mapping( TT_Face face, + FT_LOCAL_DEF( FT_Error ) + tt_var_load_delta_set_index_mapping( TT_Face face, FT_ULong offset, GX_DeltaSetIdxMap map, GX_ItemVarStore itemStore, @@ -728,7 +771,7 @@ /* rough sanity check */ if ( map->mapCount * entrySize > table_len ) { - FT_TRACE1(( "ft_var_load_delta_set_index_mapping:" + FT_TRACE1(( "tt_var_load_delta_set_index_mapping:" " invalid number of delta-set index mappings\n" )); error = FT_THROW( Invalid_Table ); goto Exit; @@ -758,6 +801,16 @@ mapData = ( mapData << 8 ) | data; } + /* new in OpenType 1.8.4 */ + if ( mapData == 0xFFFFFFFFUL ) + { + /* no variation data for this item */ + map->outerIndex[i] = 0xFFFFU; + map->innerIndex[i] = 0xFFFFU; + + continue; + } + outerIndex = mapData >> innerBitCount; if ( outerIndex >= itemStore->dataCount ) @@ -887,7 +940,7 @@ table = blend->hvar_table; } - error = ft_var_load_item_variation_store( + error = tt_var_load_item_variation_store( face, table_offset + store_offset, &table->itemStore ); @@ -896,7 +949,7 @@ if ( widthMap_offset ) { - error = ft_var_load_delta_set_index_mapping( + error = tt_var_load_delta_set_index_mapping( face, table_offset + widthMap_offset, &table->widthMap, @@ -938,26 +991,47 @@ } - static FT_Int - ft_var_get_item_delta( TT_Face face, + FT_LOCAL_DEF( FT_ItemVarDelta ) + tt_var_get_item_delta( TT_Face face, GX_ItemVarStore itemStore, FT_UInt outerIndex, FT_UInt innerIndex ) { - GX_ItemVarData varData; - FT_Short* deltaSet; + FT_Stream stream = FT_FACE_STREAM( face ); + FT_Memory memory = stream->memory; + FT_Error error = FT_Err_Ok; + + GX_ItemVarData varData; + FT_ItemVarDelta* deltaSet; - FT_UInt master, j; - FT_Fixed netAdjustment = 0; /* accumulated adjustment */ - FT_Fixed scaledDelta; - FT_Fixed delta; + FT_UInt master, j; + FT_Fixed* scalars = NULL; + FT_ItemVarDelta returnValue; + if ( !face->blend || !face->blend->normalizedcoords ) + return 0; + + /* OpenType 1.8.4+: No variation data for this item */ + /* as indices have special value 0xFFFF. */ + if ( outerIndex == 0xFFFF && innerIndex == 0xFFFF ) + return 0; + /* See pseudo code from `Font Variations Overview' */ /* in the OpenType specification. */ + if ( outerIndex >= itemStore->dataCount ) + return 0; /* Out of range. */ + varData = &itemStore->varData[outerIndex]; - deltaSet = &varData->deltaSet[varData->regionIdxCount * innerIndex]; + deltaSet = FT_OFFSET( varData->deltaSet, + varData->regionIdxCount * innerIndex ); + + if ( innerIndex >= varData->itemCount ) + return 0; /* Out of range. */ + + if ( FT_QNEW_ARRAY( scalars, varData->regionIdxCount ) ) + return 0; /* outer loop steps through master designs to be blended */ for ( master = 0; master < varData->regionIdxCount; master++ ) @@ -1008,18 +1082,33 @@ FT_MulDiv( scalar, axis->endCoord - face->blend->normalizedcoords[j], axis->endCoord - axis->peakCoord ); - } /* per-axis loop */ - /* get the scaled delta for this region */ - delta = FT_intToFixed( deltaSet[master] ); - scaledDelta = FT_MulFix( scalar, delta ); + } /* per-axis loop */ - /* accumulate the adjustments from each region */ - netAdjustment = netAdjustment + scaledDelta; + scalars[master] = scalar; } /* per-region loop */ - return FT_fixedToInt( netAdjustment ); + + /* Compute the scaled delta for this region. + * + * From: https://docs.microsoft.com/en-us/typography/opentype/spec/otvarcommonformats#item-variation-store-header-and-item-variation-data-subtables: + * + * `Fixed` is a 32-bit (16.16) type and, in the general case, requires + * 32-bit deltas. As described above, the `DeltaSet` record can + * accommodate deltas that are, logically, either 16-bit or 32-bit. + * When scaled deltas are applied to `Fixed` values, the `Fixed` value + * is treated like a 32-bit integer. + * + * `FT_MulAddFix` internally uses 64-bit precision; it thus can handle + * deltas ranging from small 8-bit to large 32-bit values that are + * applied to 16.16 `FT_Fixed` / OpenType `Fixed` values. + */ + returnValue = FT_MulAddFix( scalars, deltaSet, varData->regionIdxCount ); + + FT_FREE( scalars ); + + return returnValue; } @@ -1112,35 +1201,27 @@ } else { - GX_ItemVarData varData; - - /* no widthMap data */ outerIndex = 0; innerIndex = gindex; - - varData = &table->itemStore.varData[outerIndex]; - if ( gindex >= varData->itemCount ) - { - FT_TRACE2(( "gindex %d out of range\n", gindex )); - error = FT_THROW( Invalid_Argument ); - goto Exit; - } } - delta = ft_var_get_item_delta( face, + delta = tt_var_get_item_delta( face, &table->itemStore, outerIndex, innerIndex ); - FT_TRACE5(( "%s value %d adjusted by %d unit%s (%s)\n", - vertical ? "vertical height" : "horizontal width", - *avalue, - delta, - delta == 1 ? "" : "s", - vertical ? "VVAR" : "HVAR" )); - - *avalue += delta; + if ( delta ) + { + FT_TRACE5(( "%s value %d adjusted by %d unit%s (%s)\n", + vertical ? "vertical height" : "horizontal width", + *avalue, + delta, + delta == 1 ? "" : "s", + vertical ? "VVAR" : "HVAR" )); + + *avalue = ADD_INT( *avalue, delta ); + } Exit: return error; @@ -1307,7 +1388,7 @@ records_offset = FT_STREAM_POS(); - error = ft_var_load_item_variation_store( + error = tt_var_load_item_variation_store( face, table_offset + store_offset, &blend->mvar_table->itemStore ); @@ -1323,7 +1404,7 @@ return; value = blend->mvar_table->values; - limit = value + blend->mvar_table->valueCount; + limit = FT_OFFSET( value, blend->mvar_table->valueCount ); itemStore = &blend->mvar_table->itemStore; for ( ; value < limit; value++ ) @@ -1332,6 +1413,13 @@ value->outerIndex = FT_GET_USHORT(); value->innerIndex = FT_GET_USHORT(); + /* new in OpenType 1.8.4 */ + if ( value->outerIndex == 0xFFFFU && value->innerIndex == 0xFFFFU ) + { + /* no variation data for this item */ + continue; + } + if ( value->outerIndex >= itemStore->dataCount || value->innerIndex >= itemStore->varData[value->outerIndex] .itemCount ) @@ -1349,7 +1437,7 @@ FT_TRACE2(( "loaded\n" )); value = blend->mvar_table->values; - limit = value + blend->mvar_table->valueCount; + limit = FT_OFFSET( value, blend->mvar_table->valueCount ); /* save original values of the data MVAR is going to modify */ for ( ; value < limit; value++ ) @@ -1414,7 +1502,7 @@ return; value = blend->mvar_table->values; - limit = value + blend->mvar_table->valueCount; + limit = FT_OFFSET( value, blend->mvar_table->valueCount ); for ( ; value < limit; value++ ) { @@ -1422,12 +1510,12 @@ FT_Int delta; - delta = ft_var_get_item_delta( face, + delta = tt_var_get_item_delta( face, &blend->mvar_table->itemStore, value->outerIndex, value->innerIndex ); - if ( p ) + if ( p && delta ) { FT_TRACE5(( "value %c%c%c%c (%d unit%s) adjusted by %d unit%s (MVAR)\n", (FT_Char)( value->tag >> 24 ), @@ -1725,7 +1813,7 @@ blend->tuplecoords[i * gvar_head.axisCount + j] = FT_fdot14ToFixed( FT_GET_SHORT() ); FT_TRACE5(( "%.5f ", - blend->tuplecoords[i * gvar_head.axisCount + j] / 65536.0 )); + (double)blend->tuplecoords[i * gvar_head.axisCount + j] / 65536 )); } FT_TRACE5(( "]\n" )); } @@ -1796,7 +1884,7 @@ for ( i = 0; i < blend->num_axis; i++ ) { FT_TRACE6(( " axis %d coordinate %.5f:\n", - i, blend->normalizedcoords[i] / 65536.0 )); + i, (double)blend->normalizedcoords[i] / 65536 )); /* It's not clear why (for intermediate tuples) we don't need */ /* to check against start/end -- the documentation says we don't. */ @@ -1819,7 +1907,7 @@ if ( blend->normalizedcoords[i] == tuple_coords[i] ) { FT_TRACE6(( " tuple coordinate %.5f fits perfectly\n", - tuple_coords[i] / 65536.0 )); + (double)tuple_coords[i] / 65536 )); /* `apply' does not change */ continue; } @@ -1832,13 +1920,13 @@ blend->normalizedcoords[i] > FT_MAX( 0, tuple_coords[i] ) ) { FT_TRACE6(( " tuple coordinate %.5f is exceeded, stop\n", - tuple_coords[i] / 65536.0 )); + (double)tuple_coords[i] / 65536 )); apply = 0; break; } FT_TRACE6(( " tuple coordinate %.5f fits\n", - tuple_coords[i] / 65536.0 )); + (double)tuple_coords[i] / 65536 )); apply = FT_MulDiv( apply, blend->normalizedcoords[i], tuple_coords[i] ); @@ -1852,15 +1940,15 @@ { FT_TRACE6(( " intermediate tuple range ]%.5f;%.5f[ is exceeded," " stop\n", - im_start_coords[i] / 65536.0, - im_end_coords[i] / 65536.0 )); + (double)im_start_coords[i] / 65536, + (double)im_end_coords[i] / 65536 )); apply = 0; break; } FT_TRACE6(( " intermediate tuple range ]%.5f;%.5f[ fits\n", - im_start_coords[i] / 65536.0, - im_end_coords[i] / 65536.0 )); + (double)im_start_coords[i] / 65536, + (double)im_end_coords[i] / 65536 )); if ( blend->normalizedcoords[i] < tuple_coords[i] ) apply = FT_MulDiv( apply, blend->normalizedcoords[i] - im_start_coords[i], @@ -1872,7 +1960,7 @@ } } - FT_TRACE6(( " apply factor is %.5f\n", apply / 65536.0 )); + FT_TRACE6(( " apply factor is %.5f\n", (double)apply / 65536 )); return apply; } @@ -1886,12 +1974,18 @@ FT_Fixed* coords, FT_Fixed* normalized ) { + FT_Error error = FT_Err_Ok; + FT_Memory memory = face->root.memory; + FT_UInt i, j; + GX_Blend blend; FT_MM_Var* mmvar; - FT_UInt i, j; FT_Var_Axis* a; GX_AVarSegment av; + FT_Fixed* new_normalized = NULL; + FT_Fixed* old_normalized; + blend = face->blend; mmvar = blend->mmvar; @@ -1914,15 +2008,15 @@ FT_Fixed coord = coords[i]; - FT_TRACE5(( " %d: %.5f\n", i, coord / 65536.0 )); + FT_TRACE5(( " %d: %.5f\n", i, (double)coord / 65536 )); if ( coord > a->maximum || coord < a->minimum ) { FT_TRACE1(( "ft_var_to_normalized: design coordinate %.5f\n", - coord / 65536.0 )); + (double)coord / 65536 )); FT_TRACE1(( " is out of range [%.5f;%.5f];" " clamping\n", - a->minimum / 65536.0, - a->maximum / 65536.0 )); + (double)a->minimum / 65536, + (double)a->maximum / 65536 )); } if ( coord > a->def ) @@ -1942,30 +2036,91 @@ for ( ; i < mmvar->num_axis; i++ ) normalized[i] = 0; - if ( blend->avar_segment ) + if ( blend->avar_table ) { + GX_AVarTable table = blend->avar_table; + + FT_TRACE5(( "normalized design coordinates" " before applying `avar' data:\n" )); - av = blend->avar_segment; - for ( i = 0; i < mmvar->num_axis; i++, av++ ) + if ( table->avar_segment ) { - for ( j = 1; j < (FT_UInt)av->pairCount; j++ ) + av = table->avar_segment; + + for ( i = 0; i < mmvar->num_axis; i++, av++ ) { - if ( normalized[i] < av->correspondence[j].fromCoord ) + for ( j = 1; j < (FT_UInt)av->pairCount; j++ ) { - FT_TRACE5(( " %.5f\n", normalized[i] / 65536.0 )); + if ( normalized[i] < av->correspondence[j].fromCoord ) + { + FT_TRACE5(( " %.5f\n", (double)normalized[i] / 65536 )); + + normalized[i] = + FT_MulDiv( normalized[i] - av->correspondence[j - 1].fromCoord, + av->correspondence[j].toCoord - + av->correspondence[j - 1].toCoord, + av->correspondence[j].fromCoord - + av->correspondence[j - 1].fromCoord ) + + av->correspondence[j - 1].toCoord; + break; + } + } + } + } - normalized[i] = - FT_MulDiv( normalized[i] - av->correspondence[j - 1].fromCoord, - av->correspondence[j].toCoord - - av->correspondence[j - 1].toCoord, - av->correspondence[j].fromCoord - - av->correspondence[j - 1].fromCoord ) + - av->correspondence[j - 1].toCoord; - break; + if ( table->itemStore.varData ) + { + if ( FT_QNEW_ARRAY( new_normalized, mmvar->num_axis ) ) + return; + + /* Install our half-normalized coordinates for the next */ + /* Item Variation Store to work with. */ + old_normalized = face->blend->normalizedcoords; + face->blend->normalizedcoords = normalized; + + for ( i = 0; i < mmvar->num_axis; i++ ) + { + FT_Fixed v = normalized[i]; + FT_UInt innerIndex = i; + FT_UInt outerIndex = 0; + FT_Int delta; + + + if ( table->axisMap.innerIndex ) + { + FT_UInt idx = i; + + + if ( idx >= table->axisMap.mapCount ) + idx = table->axisMap.mapCount - 1; + + outerIndex = table->axisMap.outerIndex[idx]; + innerIndex = table->axisMap.innerIndex[idx]; } + + delta = tt_var_get_item_delta( face, + &table->itemStore, + outerIndex, + innerIndex ); + + v += delta << 2; + + /* Clamp value range. */ + v = v >= 0x10000L ? 0x10000 : v; + v = v <= -0x10000L ? -0x10000 : v; + + new_normalized[i] = v; + } + + for ( i = 0; i < mmvar->num_axis; i++ ) + { + normalized[i] = new_normalized[i]; } + + face->blend->normalizedcoords = old_normalized; + + FT_FREE( new_normalized ); } } } @@ -2003,9 +2158,9 @@ for ( ; i < num_coords; i++ ) design[i] = 0; - if ( blend->avar_segment ) + if ( blend->avar_table && blend->avar_table->avar_segment ) { - GX_AVarSegment av = blend->avar_segment; + GX_AVarSegment av = blend->avar_table->avar_segment; FT_TRACE5(( "design coordinates" @@ -2025,7 +2180,7 @@ av->correspondence[j - 1].toCoord ) + av->correspondence[j - 1].fromCoord; - FT_TRACE5(( " %.5f\n", design[i] / 65536.0 )); + FT_TRACE5(( " %.5f\n", (double)design[i] / 65536 )); break; } } @@ -2170,6 +2325,11 @@ FT_FRAME_END }; + /* `num_instances` holds the number of all named instances including */ + /* the default instance, which might be missing in the table of named */ + /* instances (in 'fvar'). This value is validated in `sfobjs.c` and */ + /* may be reset to 0 if consistency checks fail. */ + num_instances = (FT_UInt)face->root.style_flags >> 16; /* read the font data and set up the internal representation */ /* if not already done */ @@ -2180,20 +2340,6 @@ { FT_TRACE2(( "FVAR " )); - /* both `fvar' and `gvar' must be present */ - if ( FT_SET_ERROR( face->goto_table( face, TTAG_gvar, - stream, &table_len ) ) ) - { - /* CFF2 is an alternate to gvar here */ - if ( FT_SET_ERROR( face->goto_table( face, TTAG_CFF2, - stream, &table_len ) ) ) - { - FT_TRACE1(( "\n" )); - FT_TRACE1(( "TT_Get_MM_Var: `gvar' or `CFF2' table is missing\n" )); - goto Exit; - } - } - if ( FT_SET_ERROR( face->goto_table( face, TTAG_fvar, stream, &table_len ) ) ) { @@ -2208,6 +2354,17 @@ if ( FT_STREAM_READ_FIELDS( fvar_fields, &fvar_head ) ) goto Exit; + /* If `num_instances` is larger, synthetization of the default */ + /* instance is required. If `num_instances` is smaller, */ + /* however, the value has been reset to 0 in `sfnt_init_face` */ + /* (in `sfobjs.c`); in this case we have underallocated `mmvar` */ + /* structs. */ + if ( num_instances < fvar_head.instanceCount ) + { + error = FT_THROW( Invalid_Table ); + goto Exit; + } + usePsName = FT_BOOL( fvar_head.instanceSize == 6 + 4 * fvar_head.axisCount ); @@ -2226,11 +2383,6 @@ else num_axes = face->blend->num_axis; - /* `num_instances' holds the number of all named instances, */ - /* including the default instance which might be missing */ - /* in fvar's table of named instances */ - num_instances = (FT_UInt)face->root.style_flags >> 16; - /* prepare storage area for MM data; this cannot overflow */ /* 32-bit arithmetic because of the size limits used in the */ /* `fvar' table validity check in `sfnt_init_face' */ @@ -2358,9 +2510,9 @@ " %10.5f %10.5f %10.5f 0x%04X%s\n", i, a->name, - a->minimum / 65536.0, - a->def / 65536.0, - a->maximum / 65536.0, + (double)a->minimum / 65536, + (double)a->def / 65536, + (double)a->maximum / 65536, *axis_flags, invalid ? " (invalid, disabled)" : "" )); #endif @@ -2561,6 +2713,8 @@ a->name = (char*)"OpticalSize"; else if ( a->tag == TTAG_slnt ) a->name = (char*)"Slant"; + else if ( a->tag == TTAG_ital ) + a->name = (char*)"Italic"; next_name += 5; a++; @@ -2622,11 +2776,11 @@ for ( i = 0; i < num_coords; i++ ) { - FT_TRACE5(( " %.5f\n", coords[i] / 65536.0 )); + FT_TRACE5(( " %.5f\n", (double)coords[i] / 65536 )); if ( coords[i] < -0x00010000L || coords[i] > 0x00010000L ) { FT_TRACE1(( "TT_Set_MM_Blend: normalized design coordinate %.5f\n", - coords[i] / 65536.0 )); + (double)coords[i] / 65536 )); FT_TRACE1(( " is out of range [-1;1]\n" )); error = FT_THROW( Invalid_Argument ); goto Exit; @@ -2636,8 +2790,16 @@ FT_TRACE5(( "\n" )); if ( !face->is_cff2 && !blend->glyphoffsets ) - if ( FT_SET_ERROR( ft_var_load_gvar( face ) ) ) + { + /* While a missing 'gvar' table is acceptable, for example for */ + /* fonts that only vary metrics information or 'COLR' v1 */ + /* `PaintVar*` tables, an incorrect SFNT table offset or size */ + /* for 'gvar', or an inconsistent 'gvar' table is not. */ + error = ft_var_load_gvar( face ); + if ( error != FT_Err_Table_Missing && error != FT_Err_Ok ) goto Exit; + error = FT_Err_Ok; + } if ( !blend->coords ) { @@ -3503,10 +3665,10 @@ { FT_TRACE7(( " %d: %f -> %f\n", j, - ( FT_fdot6ToFixed( face->cvt[j] ) + - old_cvt_delta ) / 65536.0, - ( FT_fdot6ToFixed( face->cvt[j] ) + - cvt_deltas[j] ) / 65536.0 )); + (double)( FT_fdot6ToFixed( face->cvt[j] ) + + old_cvt_delta ) / 65536, + (double)( FT_fdot6ToFixed( face->cvt[j] ) + + cvt_deltas[j] ) / 65536 )); count++; } #endif @@ -3545,10 +3707,10 @@ { FT_TRACE7(( " %d: %f -> %f\n", pindex, - ( FT_fdot6ToFixed( face->cvt[pindex] ) + - old_cvt_delta ) / 65536.0, - ( FT_fdot6ToFixed( face->cvt[pindex] ) + - cvt_deltas[pindex] ) / 65536.0 )); + (double)( FT_fdot6ToFixed( face->cvt[pindex] ) + + old_cvt_delta ) / 65536, + (double)( FT_fdot6ToFixed( face->cvt[pindex] ) + + cvt_deltas[pindex] ) / 65536 )); count++; } #endif @@ -3813,20 +3975,12 @@ * @Description: * Apply the appropriate deltas to the current glyph. * - * @Input: - * face :: - * A handle to the target face object. - * - * glyph_index :: - * The index of the glyph being modified. - * - * n_points :: - * The number of the points in the glyph, including - * phantom points. - * * @InOut: + * loader :: + * A handle to the loader object. + * * outline :: - * The outline to change. + * The outline to change, with appended phantom points. * * @Output: * unrounded :: @@ -3837,15 +3991,16 @@ * FreeType error code. 0 means success. */ FT_LOCAL_DEF( FT_Error ) - TT_Vary_Apply_Glyph_Deltas( TT_Face face, - FT_UInt glyph_index, + TT_Vary_Apply_Glyph_Deltas( TT_Loader loader, FT_Outline* outline, - FT_Vector* unrounded, - FT_UInt n_points ) + FT_Vector* unrounded ) { FT_Error error; - FT_Stream stream = face->root.stream; - FT_Memory memory = stream->memory; + TT_Face face = loader->face; + FT_Stream stream = face->root.stream; + FT_Memory memory = stream->memory; + FT_UInt glyph_index = loader->glyph_index; + FT_UInt n_points = (FT_UInt)outline->n_points + 4; FT_Vector* points_org = NULL; /* coordinates in 16.16 format */ FT_Vector* points_out = NULL; /* coordinates in 16.16 format */ @@ -4063,50 +4218,22 @@ FT_Fixed point_delta_y = FT_MulFix( deltas_y[j], apply ); - if ( j < n_points - 4 ) - { - point_deltas_x[j] = old_point_delta_x + point_delta_x; - point_deltas_y[j] = old_point_delta_y + point_delta_y; - } - else - { - /* To avoid double adjustment of advance width or height, */ - /* adjust phantom points only if there is no HVAR or VVAR */ - /* support, respectively. */ - if ( j == ( n_points - 4 ) && - !( face->variation_support & - TT_FACE_FLAG_VAR_LSB ) ) - point_deltas_x[j] = old_point_delta_x + point_delta_x; - - else if ( j == ( n_points - 3 ) && - !( face->variation_support & - TT_FACE_FLAG_VAR_HADVANCE ) ) - point_deltas_x[j] = old_point_delta_x + point_delta_x; - - else if ( j == ( n_points - 2 ) && - !( face->variation_support & - TT_FACE_FLAG_VAR_TSB ) ) - point_deltas_y[j] = old_point_delta_y + point_delta_y; - - else if ( j == ( n_points - 1 ) && - !( face->variation_support & - TT_FACE_FLAG_VAR_VADVANCE ) ) - point_deltas_y[j] = old_point_delta_y + point_delta_y; - } + point_deltas_x[j] = old_point_delta_x + point_delta_x; + point_deltas_y[j] = old_point_delta_y + point_delta_y; #ifdef FT_DEBUG_LEVEL_TRACE if ( point_delta_x || point_delta_y ) { FT_TRACE7(( " %d: (%f, %f) -> (%f, %f)\n", j, - ( FT_intToFixed( outline->points[j].x ) + - old_point_delta_x ) / 65536.0, - ( FT_intToFixed( outline->points[j].y ) + - old_point_delta_y ) / 65536.0, - ( FT_intToFixed( outline->points[j].x ) + - point_deltas_x[j] ) / 65536.0, - ( FT_intToFixed( outline->points[j].y ) + - point_deltas_y[j] ) / 65536.0 )); + (double)( FT_intToFixed( outline->points[j].x ) + + old_point_delta_x ) / 65536, + (double)( FT_intToFixed( outline->points[j].y ) + + old_point_delta_y ) / 65536, + (double)( FT_intToFixed( outline->points[j].x ) + + point_deltas_x[j] ) / 65536, + (double)( FT_intToFixed( outline->points[j].y ) + + point_deltas_y[j] ) / 65536 )); count++; } #endif @@ -4165,50 +4292,22 @@ FT_Pos point_delta_y = points_out[j].y - points_org[j].y; - if ( j < n_points - 4 ) - { - point_deltas_x[j] = old_point_delta_x + point_delta_x; - point_deltas_y[j] = old_point_delta_y + point_delta_y; - } - else - { - /* To avoid double adjustment of advance width or height, */ - /* adjust phantom points only if there is no HVAR or VVAR */ - /* support, respectively. */ - if ( j == ( n_points - 4 ) && - !( face->variation_support & - TT_FACE_FLAG_VAR_LSB ) ) - point_deltas_x[j] = old_point_delta_x + point_delta_x; - - else if ( j == ( n_points - 3 ) && - !( face->variation_support & - TT_FACE_FLAG_VAR_HADVANCE ) ) - point_deltas_x[j] = old_point_delta_x + point_delta_x; - - else if ( j == ( n_points - 2 ) && - !( face->variation_support & - TT_FACE_FLAG_VAR_TSB ) ) - point_deltas_y[j] = old_point_delta_y + point_delta_y; - - else if ( j == ( n_points - 1 ) && - !( face->variation_support & - TT_FACE_FLAG_VAR_VADVANCE ) ) - point_deltas_y[j] = old_point_delta_y + point_delta_y; - } + point_deltas_x[j] = old_point_delta_x + point_delta_x; + point_deltas_y[j] = old_point_delta_y + point_delta_y; #ifdef FT_DEBUG_LEVEL_TRACE if ( point_delta_x || point_delta_y ) { FT_TRACE7(( " %d: (%f, %f) -> (%f, %f)\n", j, - ( FT_intToFixed( outline->points[j].x ) + - old_point_delta_x ) / 65536.0, - ( FT_intToFixed( outline->points[j].y ) + - old_point_delta_y ) / 65536.0, - ( FT_intToFixed( outline->points[j].x ) + - point_deltas_x[j] ) / 65536.0, - ( FT_intToFixed( outline->points[j].y ) + - point_deltas_y[j] ) / 65536.0 )); + (double)( FT_intToFixed( outline->points[j].x ) + + old_point_delta_x ) / 65536, + (double)( FT_intToFixed( outline->points[j].y ) + + old_point_delta_y ) / 65536, + (double)( FT_intToFixed( outline->points[j].x ) + + point_deltas_x[j] ) / 65536, + (double)( FT_intToFixed( outline->points[j].y ) + + point_deltas_y[j] ) / 65536 )); count++; } #endif @@ -4232,6 +4331,24 @@ FT_TRACE5(( "\n" )); + /* To avoid double adjustment of advance width or height, */ + /* do not move phantom points if there is HVAR or VVAR */ + /* support, respectively. */ + if ( face->variation_support & TT_FACE_FLAG_VAR_HADVANCE ) + { + point_deltas_x[n_points - 4] = 0; + point_deltas_y[n_points - 4] = 0; + point_deltas_x[n_points - 3] = 0; + point_deltas_y[n_points - 3] = 0; + } + if ( face->variation_support & TT_FACE_FLAG_VAR_VADVANCE ) + { + point_deltas_x[n_points - 2] = 0; + point_deltas_y[n_points - 2] = 0; + point_deltas_x[n_points - 1] = 0; + point_deltas_y[n_points - 1] = 0; + } + for ( i = 0; i < n_points; i++ ) { unrounded[i].x += FT_fixedToFdot6( point_deltas_x[i] ); @@ -4241,6 +4358,24 @@ outline->points[i].y += FT_fixedToInt( point_deltas_y[i] ); } + /* To avoid double adjustment of advance width or height, */ + /* adjust phantom points only if there is no HVAR or VVAR */ + /* support, respectively. */ + if ( !( face->variation_support & TT_FACE_FLAG_VAR_HADVANCE ) ) + { + loader->pp1 = outline->points[n_points - 4]; + loader->pp2 = outline->points[n_points - 3]; + loader->linear = FT_PIX_ROUND( unrounded[n_points - 3].x - + unrounded[n_points - 4].x ) / 64; + } + if ( !( face->variation_support & TT_FACE_FLAG_VAR_VADVANCE ) ) + { + loader->pp3 = outline->points[n_points - 2]; + loader->pp4 = outline->points[n_points - 1]; + loader->vadvance = FT_PIX_ROUND( unrounded[n_points - 1].y - + unrounded[n_points - 2].y ) / 64; + } + Fail3: FT_FREE( point_deltas_x ); FT_FREE( point_deltas_y ); @@ -4305,8 +4440,8 @@ } - static void - ft_var_done_item_variation_store( TT_Face face, + FT_LOCAL_DEF( void ) + tt_var_done_item_variation_store( TT_Face face, GX_ItemVarStore itemStore ) { FT_Memory memory = FT_FACE_MEMORY( face ); @@ -4334,6 +4469,18 @@ } + FT_LOCAL_DEF( void ) + tt_var_done_delta_set_index_map( TT_Face face, + GX_DeltaSetIdxMap deltaSetIdxMap ) + { + FT_Memory memory = FT_FACE_MEMORY( face ); + + + FT_FREE( deltaSetIdxMap->innerIndex ); + FT_FREE( deltaSetIdxMap->outerIndex ); + } + + /************************************************************************** * * @Function: @@ -4362,36 +4509,47 @@ FT_FREE( blend->normalized_stylecoords ); FT_FREE( blend->mmvar ); - if ( blend->avar_segment ) + if ( blend->avar_table ) { - for ( i = 0; i < num_axes; i++ ) - FT_FREE( blend->avar_segment[i].correspondence ); - FT_FREE( blend->avar_segment ); + if ( blend->avar_table->avar_segment ) + { + for ( i = 0; i < num_axes; i++ ) + FT_FREE( blend->avar_table->avar_segment[i].correspondence ); + FT_FREE( blend->avar_table->avar_segment ); + } + + tt_var_done_item_variation_store( face, + &blend->avar_table->itemStore ); + + tt_var_done_delta_set_index_map( face, + &blend->avar_table->axisMap ); + + FT_FREE( blend->avar_table ); } if ( blend->hvar_table ) { - ft_var_done_item_variation_store( face, + tt_var_done_item_variation_store( face, &blend->hvar_table->itemStore ); - FT_FREE( blend->hvar_table->widthMap.innerIndex ); - FT_FREE( blend->hvar_table->widthMap.outerIndex ); + tt_var_done_delta_set_index_map( face, + &blend->hvar_table->widthMap ); FT_FREE( blend->hvar_table ); } if ( blend->vvar_table ) { - ft_var_done_item_variation_store( face, + tt_var_done_item_variation_store( face, &blend->vvar_table->itemStore ); - FT_FREE( blend->vvar_table->widthMap.innerIndex ); - FT_FREE( blend->vvar_table->widthMap.outerIndex ); + tt_var_done_delta_set_index_map( face, + &blend->vvar_table->widthMap ); FT_FREE( blend->vvar_table ); } if ( blend->mvar_table ) { - ft_var_done_item_variation_store( face, + tt_var_done_item_variation_store( face, &blend->mvar_table->itemStore ); FT_FREE( blend->mvar_table->values ); |