Rémi Bernon : gdi32: Introduce new opentype font parsing helpers.
Module: wine Branch: master Commit: e338d046976064d6f050591f1c99fa1ddd4077b7 URL: https://source.winehq.org/git/wine.git/?a=commit;h=e338d046976064d6f050591f1... Author: Rémi Bernon <rbernon(a)codeweavers.com> Date: Tue Dec 1 15:54:48 2020 +0100 gdi32: Introduce new opentype font parsing helpers. Mostly taken from dwrite source, adapted to make it more flexible. Signed-off-by: Rémi Bernon <rbernon(a)codeweavers.com> Signed-off-by: Huw Davies <huw(a)codeweavers.com> Signed-off-by: Alexandre Julliard <julliard(a)winehq.org> --- dlls/gdi32/Makefile.in | 1 + dlls/gdi32/freetype.c | 11 +++ dlls/gdi32/gdi_private.h | 7 ++ dlls/gdi32/opentype.c | 220 +++++++++++++++++++++++++++++++++++++++++++++++ 4 files changed, 239 insertions(+) diff --git a/dlls/gdi32/Makefile.in b/dlls/gdi32/Makefile.in index a965e80001c..910450b9f64 100644 --- a/dlls/gdi32/Makefile.in +++ b/dlls/gdi32/Makefile.in @@ -42,6 +42,7 @@ C_SRCS = \ mfdrv/objects.c \ mfdrv/text.c \ opengl.c \ + opentype.c \ painting.c \ palette.c \ path.c \ diff --git a/dlls/gdi32/freetype.c b/dlls/gdi32/freetype.c index cb993034d09..686f2b54682 100644 --- a/dlls/gdi32/freetype.c +++ b/dlls/gdi32/freetype.c @@ -1110,8 +1110,10 @@ struct unix_face static struct unix_face *unix_face_create( const char *unix_name, void *data_ptr, DWORD data_size, UINT face_index, DWORD flags ) { + const struct ttc_sfnt_v1 *ttc_sfnt_v1; struct unix_face *This; struct stat st; + DWORD face_count; int fd; TRACE( "unix_name %s, face_index %u, data_ptr %p, data_size %u, flags %#x\n", @@ -1138,11 +1140,20 @@ static struct unix_face *unix_face_create( const char *unix_name, void *data_ptr RtlFreeHeap( GetProcessHeap(), 0, This ); This = NULL; } + else if (opentype_get_ttc_sfnt_v1( data_ptr, data_size, face_index, &face_count, &ttc_sfnt_v1 )) + { + This->scalable = TRUE; + This->num_faces = face_count; + } else { + WARN( "unable to parse font, falling back to FreeType\n" ); This->scalable = FT_IS_SCALABLE( This->ft_face ); This->num_faces = This->ft_face->num_faces; + } + if (This) + { This->family_name = ft_face_get_family_name( This->ft_face, system_lcid ); This->second_name = ft_face_get_family_name( This->ft_face, MAKELANGID(LANG_ENGLISH, SUBLANG_DEFAULT) ); diff --git a/dlls/gdi32/gdi_private.h b/dlls/gdi32/gdi_private.h index b9a06415538..a529cb0890c 100644 --- a/dlls/gdi32/gdi_private.h +++ b/dlls/gdi32/gdi_private.h @@ -414,6 +414,13 @@ struct font_callback_funcs extern void font_init(void) DECLSPEC_HIDDEN; +/* opentype.c */ + +struct ttc_sfnt_v1; + +extern BOOL opentype_get_ttc_sfnt_v1( const void *data, size_t size, DWORD index, DWORD *count, + const struct ttc_sfnt_v1 **ttc_sfnt_v1 ) DECLSPEC_HIDDEN; + /* gdiobj.c */ extern HGDIOBJ alloc_gdi_handle( void *obj, WORD type, const struct gdi_obj_funcs *funcs ) DECLSPEC_HIDDEN; extern void *free_gdi_handle( HGDIOBJ handle ) DECLSPEC_HIDDEN; diff --git a/dlls/gdi32/opentype.c b/dlls/gdi32/opentype.c new file mode 100644 index 00000000000..2363439cdc5 --- /dev/null +++ b/dlls/gdi32/opentype.c @@ -0,0 +1,220 @@ +/* + * Copyright 2020 Rémi Bernon for CodeWeavers + * Copyright 2014 Aric Stewart for CodeWeavers + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA + */ + +#if 0 +#pragma makedep unix +#endif + +#include <stdarg.h> +#include <stdlib.h> + +#include "windef.h" +#include "winbase.h" + +#include "wine/debug.h" + +#include "gdi_private.h" + +WINE_DEFAULT_DEBUG_CHANNEL(font); + +#define MS_OTTO_TAG MS_MAKE_TAG('O','T','T','O') +#define MS_HEAD_TAG MS_MAKE_TAG('h','e','a','d') +#define MS_HHEA_TAG MS_MAKE_TAG('h','h','e','a') +#define MS_OS_2_TAG MS_MAKE_TAG('O','S','/','2') +#define MS_EBSC_TAG MS_MAKE_TAG('E','B','S','C') +#define MS_EBDT_TAG MS_MAKE_TAG('E','B','D','T') +#define MS_CBDT_TAG MS_MAKE_TAG('C','B','D','T') + +#ifdef WORDS_BIGENDIAN +#define GET_BE_WORD(x) (x) +#define GET_BE_DWORD(x) (x) +#else +#define GET_BE_WORD(x) RtlUshortByteSwap(x) +#define GET_BE_DWORD(x) RtlUlongByteSwap(x) +#endif + +#include "pshpack2.h" +struct ttc_header_v1 +{ + CHAR TTCTag[4]; + DWORD Version; + DWORD numFonts; + DWORD OffsetTable[1]; +}; + +struct ttc_sfnt_v1 +{ + DWORD version; + WORD numTables; + WORD searchRange; + WORD entrySelector; + WORD rangeShift; +}; + +struct tt_tablerecord +{ + DWORD tag; + DWORD checkSum; + DWORD offset; + DWORD length; +}; + +struct tt_os2_v1 +{ + USHORT version; + SHORT xAvgCharWidth; + USHORT usWeightClass; + USHORT usWidthClass; + SHORT fsType; + SHORT ySubscriptXSize; + SHORT ySubscriptYSize; + SHORT ySubscriptXOffset; + SHORT ySubscriptYOffset; + SHORT ySuperscriptXSize; + SHORT ySuperscriptYSize; + SHORT ySuperscriptXOffset; + SHORT ySuperscriptYOffset; + SHORT yStrikeoutSize; + SHORT yStrikeoutPosition; + SHORT sFamilyClass; + PANOSE panose; + ULONG ulUnicodeRange1; + ULONG ulUnicodeRange2; + ULONG ulUnicodeRange3; + ULONG ulUnicodeRange4; + CHAR achVendID[4]; + USHORT fsSelection; + USHORT usFirstCharIndex; + USHORT usLastCharIndex; + /* According to the Apple spec, original version didn't have the below fields, + * version numbers were taken from the OpenType spec. + */ + /* version 0 (TrueType 1.5) */ + USHORT sTypoAscender; + USHORT sTypoDescender; + USHORT sTypoLineGap; + USHORT usWinAscent; + USHORT usWinDescent; + /* version 1 (TrueType 1.66) */ + ULONG ulCodePageRange1; + ULONG ulCodePageRange2; +}; +#include "poppack.h" + +static BOOL opentype_get_table_ptr( const void *data, size_t size, const struct ttc_sfnt_v1 *ttc_sfnt_v1, + UINT32 table_tag, const void **table_ptr, UINT32 *table_size ) +{ + const struct tt_tablerecord *table_record; + UINT16 i, table_count; + UINT32 offset, length; + + if (!ttc_sfnt_v1) return FALSE; + + table_record = (const struct tt_tablerecord *)(ttc_sfnt_v1 + 1); + table_count = GET_BE_WORD( ttc_sfnt_v1->numTables ); + for (i = 0; i < table_count; i++, table_record++) + { + if (table_record->tag != table_tag) continue; + offset = GET_BE_DWORD( table_record->offset ); + length = GET_BE_DWORD( table_record->length ); + if (size < offset + length) return FALSE; + if (table_size && length < *table_size) return FALSE; + + if (table_ptr) *table_ptr = (const char *)data + offset; + if (table_size) *table_size = length; + return TRUE; + } + + return FALSE; +} + +static BOOL opentype_get_tt_os2_v1( const void *data, size_t size, const struct ttc_sfnt_v1 *ttc_sfnt_v1, + const struct tt_os2_v1 **tt_os2_v1 ) +{ + UINT32 table_size = sizeof(**tt_os2_v1); + return opentype_get_table_ptr( data, size, ttc_sfnt_v1, MS_OS_2_TAG, (const void **)tt_os2_v1, &table_size ); +} + +BOOL opentype_get_ttc_sfnt_v1( const void *data, size_t size, DWORD index, DWORD *count, const struct ttc_sfnt_v1 **ttc_sfnt_v1 ) +{ + const struct ttc_header_v1 *ttc_header_v1 = data; + const struct tt_os2_v1 *tt_os2_v1; + UINT32 offset, fourcc; + + *ttc_sfnt_v1 = NULL; + *count = 1; + + if (size < sizeof(fourcc)) return FALSE; + memcpy( &fourcc, data, sizeof(fourcc) ); + + switch (fourcc) + { + default: + WARN( "unsupported font format %x\n", fourcc ); + return FALSE; + case MS_TTCF_TAG: + if (size < sizeof(ttc_header_v1)) return FALSE; + if (index >= (*count = GET_BE_DWORD( ttc_header_v1->numFonts ))) return FALSE; + offset = GET_BE_DWORD( ttc_header_v1->OffsetTable[index] ); + break; + case 0x00000100: + case MS_OTTO_TAG: + offset = 0; + break; + } + + if (size < offset + sizeof(**ttc_sfnt_v1)) return FALSE; + *ttc_sfnt_v1 = (const struct ttc_sfnt_v1 *)((const char *)data + offset); + + if (!opentype_get_table_ptr( data, size, *ttc_sfnt_v1, MS_HEAD_TAG, NULL, NULL )) + { + WARN( "unsupported sfnt font: missing head table.\n" ); + return FALSE; + } + + if (!opentype_get_table_ptr( data, size, *ttc_sfnt_v1, MS_HHEA_TAG, NULL, NULL )) + { + WARN( "unsupported sfnt font: missing hhea table.\n" ); + return FALSE; + } + + if (!opentype_get_tt_os2_v1( data, size, *ttc_sfnt_v1, &tt_os2_v1 )) + { + WARN( "unsupported sfnt font: missing OS/2 table.\n" ); + return FALSE; + } + + /* Wine uses ttfs as an intermediate step in building its bitmap fonts; + we don't want to load these. */ + if (!memcmp( tt_os2_v1->achVendID, "Wine", sizeof(tt_os2_v1->achVendID) ) && + opentype_get_table_ptr( data, size, *ttc_sfnt_v1, MS_EBSC_TAG, NULL, NULL )) + { + TRACE( "ignoring wine bitmap-only sfnt font.\n" ); + return FALSE; + } + + if (opentype_get_table_ptr( data, size, *ttc_sfnt_v1, MS_EBDT_TAG, NULL, NULL ) || + opentype_get_table_ptr( data, size, *ttc_sfnt_v1, MS_CBDT_TAG, NULL, NULL )) + { + WARN( "unsupported sfnt font: embedded bitmap data.\n" ); + return FALSE; + } + + return TRUE; +}
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Alexandre Julliard