/****************************************************************************
*
* pfrload.h
*
* FreeType PFR loader (specification).
*
* Copyright (C) 2002-2023 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 */
