| /**************************************************************************** |
| * |
| * pfrload.h |
| * |
| * FreeType PFR loader (specification). |
| * |
| * Copyright (C) 2002-2022 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. |
| * |
| */ |
| |
| |
| #ifndef PFRLOAD_H_ |
| #define PFRLOAD_H_ |
| |
| #include "pfrobjs.h" |
| #include <freetype/internal/ftstream.h> |
| |
| |
| FT_BEGIN_HEADER |
| |
| /* some size checks should be always done (mainly to prevent */ |
| /* excessive allocation for malformed data), ... */ |
| #define PFR_CHECK_SIZE( x ) do \ |
| { \ |
| if ( p + (x) > limit ) \ |
| goto Too_Short; \ |
| } while ( 0 ) |
| |
| /* ... and some only if intensive checking is explicitly requested */ |
| #ifdef PFR_CONFIG_NO_CHECKS |
| #define PFR_CHECK( x ) do { } while ( 0 ) |
| #else |
| #define PFR_CHECK PFR_CHECK_SIZE |
| #endif |
| |
| #define PFR_NEXT_BYTE( p ) FT_NEXT_BYTE( p ) |
| #define PFR_NEXT_INT8( p ) FT_NEXT_CHAR( p ) |
| #define PFR_NEXT_SHORT( p ) FT_NEXT_SHORT( p ) |
| #define PFR_NEXT_USHORT( p ) FT_NEXT_USHORT( p ) |
| #define PFR_NEXT_LONG( p ) FT_NEXT_OFF3( p ) |
| #define PFR_NEXT_ULONG( p ) FT_NEXT_UOFF3( p ) |
| |
| |
| /* handling extra items */ |
| |
| typedef FT_Error |
| (*PFR_ExtraItem_ParseFunc)( FT_Byte* p, |
| FT_Byte* limit, |
| FT_Pointer data ); |
| |
| typedef struct PFR_ExtraItemRec_ |
| { |
| FT_UInt type; |
| PFR_ExtraItem_ParseFunc parser; |
| |
| } PFR_ExtraItemRec; |
| |
| typedef const struct PFR_ExtraItemRec_* PFR_ExtraItem; |
| |
| |
| FT_LOCAL( FT_Error ) |
| pfr_extra_items_skip( FT_Byte* *pp, |
| FT_Byte* limit ); |
| |
| FT_LOCAL( FT_Error ) |
| pfr_extra_items_parse( FT_Byte* *pp, |
| FT_Byte* limit, |
| PFR_ExtraItem item_list, |
| FT_Pointer item_data ); |
| |
| |
| /* load a PFR header */ |
| FT_LOCAL( FT_Error ) |
| pfr_header_load( PFR_Header header, |
| FT_Stream stream ); |
| |
| /* check a PFR header */ |
| FT_LOCAL( FT_Bool ) |
| pfr_header_check( PFR_Header header ); |
| |
| |
| /* return number of logical fonts in this file */ |
| FT_LOCAL( FT_Error ) |
| pfr_log_font_count( FT_Stream stream, |
| FT_UInt32 log_section_offset, |
| FT_Long *acount ); |
| |
| /* load a pfr logical font entry */ |
| FT_LOCAL( FT_Error ) |
| pfr_log_font_load( PFR_LogFont log_font, |
| FT_Stream stream, |
| FT_UInt face_index, |
| FT_UInt32 section_offset, |
| FT_Bool size_increment ); |
| |
| |
| /* load a physical font entry */ |
| FT_LOCAL( FT_Error ) |
| pfr_phy_font_load( PFR_PhyFont phy_font, |
| FT_Stream stream, |
| FT_UInt32 offset, |
| FT_UInt32 size ); |
| |
| /* finalize a physical font */ |
| FT_LOCAL( void ) |
| pfr_phy_font_done( PFR_PhyFont phy_font, |
| FT_Memory memory ); |
| |
| /* */ |
| |
| FT_END_HEADER |
| |
| #endif /* PFRLOAD_H_ */ |
| |
| |
| /* END */ |
