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5172
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/***************************************************************************/
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2 |
/* */
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3 |
/* pfrload.c */
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4 |
/* */
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5 |
/* FreeType PFR loader (body). */
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6 |
/* */
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/* Copyright 2002, 2003, 2004, 2005, 2007, 2009, 2010 by */
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/* David Turner, Robert Wilhelm, and Werner Lemberg. */
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/* */
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/* This file is part of the FreeType project, and may only be used, */
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/* modified, and distributed under the terms of the FreeType project */
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/* license, LICENSE.TXT. By continuing to use, modify, or distribute */
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/* this file you indicate that you have read the license and */
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/* understand and accept it fully. */
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/* */
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/***************************************************************************/
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#include "pfrload.h"
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20 |
#include FT_INTERNAL_DEBUG_H
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21 |
#include FT_INTERNAL_STREAM_H
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22 |
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23 |
#include "pfrerror.h"
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24 |
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25 |
#undef FT_COMPONENT
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26 |
#define FT_COMPONENT trace_pfr
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27 |
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28 |
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29 |
/*************************************************************************/
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30 |
/*************************************************************************/
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31 |
/***** *****/
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32 |
/***** EXTRA ITEMS *****/
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33 |
/***** *****/
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34 |
/*************************************************************************/
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35 |
/*************************************************************************/
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36 |
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37 |
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38 |
FT_LOCAL_DEF( FT_Error )
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39 |
pfr_extra_items_skip( FT_Byte* *pp,
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40 |
FT_Byte* limit )
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41 |
{
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42 |
return pfr_extra_items_parse( pp, limit, NULL, NULL );
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}
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44 |
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45 |
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46 |
FT_LOCAL_DEF( FT_Error )
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47 |
pfr_extra_items_parse( FT_Byte* *pp,
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48 |
FT_Byte* limit,
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49 |
PFR_ExtraItem item_list,
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50 |
FT_Pointer item_data )
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51 |
{
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52 |
FT_Error error = PFR_Err_Ok;
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53 |
FT_Byte* p = *pp;
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54 |
FT_UInt num_items, item_type, item_size;
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55 |
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56 |
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57 |
PFR_CHECK( 1 );
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58 |
num_items = PFR_NEXT_BYTE( p );
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59 |
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60 |
for ( ; num_items > 0; num_items-- )
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{
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62 |
PFR_CHECK( 2 );
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item_size = PFR_NEXT_BYTE( p );
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64 |
item_type = PFR_NEXT_BYTE( p );
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65 |
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66 |
PFR_CHECK( item_size );
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67 |
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68 |
if ( item_list )
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{
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70 |
PFR_ExtraItem extra = item_list;
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71 |
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72 |
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73 |
for ( extra = item_list; extra->parser != NULL; extra++ )
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{
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75 |
if ( extra->type == item_type )
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{
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error = extra->parser( p, p + item_size, item_data );
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if ( error ) goto Exit;
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79 |
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80 |
break;
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}
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}
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}
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84 |
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p += item_size;
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}
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Exit:
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*pp = p;
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90 |
return error;
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91 |
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92 |
Too_Short:
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93 |
FT_ERROR(( "pfr_extra_items_parse: invalid extra items table\n" ));
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error = PFR_Err_Invalid_Table;
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goto Exit;
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96 |
}
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/*************************************************************************/
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100 |
/*************************************************************************/
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101 |
/***** *****/
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102 |
/***** PFR HEADER *****/
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103 |
/***** *****/
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104 |
/*************************************************************************/
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105 |
/*************************************************************************/
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106 |
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107 |
static const FT_Frame_Field pfr_header_fields[] =
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108 |
{
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109 |
#undef FT_STRUCTURE
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110 |
#define FT_STRUCTURE PFR_HeaderRec
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111 |
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112 |
FT_FRAME_START( 58 ),
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113 |
FT_FRAME_ULONG ( signature ),
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114 |
FT_FRAME_USHORT( version ),
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115 |
FT_FRAME_USHORT( signature2 ),
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116 |
FT_FRAME_USHORT( header_size ),
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117 |
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118 |
FT_FRAME_USHORT( log_dir_size ),
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119 |
FT_FRAME_USHORT( log_dir_offset ),
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120 |
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121 |
FT_FRAME_USHORT( log_font_max_size ),
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122 |
FT_FRAME_UOFF3 ( log_font_section_size ),
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123 |
FT_FRAME_UOFF3 ( log_font_section_offset ),
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124 |
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125 |
FT_FRAME_USHORT( phy_font_max_size ),
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126 |
FT_FRAME_UOFF3 ( phy_font_section_size ),
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127 |
FT_FRAME_UOFF3 ( phy_font_section_offset ),
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128 |
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129 |
FT_FRAME_USHORT( gps_max_size ),
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130 |
FT_FRAME_UOFF3 ( gps_section_size ),
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131 |
FT_FRAME_UOFF3 ( gps_section_offset ),
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132 |
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133 |
FT_FRAME_BYTE ( max_blue_values ),
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134 |
FT_FRAME_BYTE ( max_x_orus ),
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135 |
FT_FRAME_BYTE ( max_y_orus ),
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136 |
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137 |
FT_FRAME_BYTE ( phy_font_max_size_high ),
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138 |
FT_FRAME_BYTE ( color_flags ),
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139 |
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140 |
FT_FRAME_UOFF3 ( bct_max_size ),
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141 |
FT_FRAME_UOFF3 ( bct_set_max_size ),
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142 |
FT_FRAME_UOFF3 ( phy_bct_set_max_size ),
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143 |
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144 |
FT_FRAME_USHORT( num_phy_fonts ),
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145 |
FT_FRAME_BYTE ( max_vert_stem_snap ),
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146 |
FT_FRAME_BYTE ( max_horz_stem_snap ),
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147 |
FT_FRAME_USHORT( max_chars ),
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148 |
FT_FRAME_END
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149 |
};
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150 |
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151 |
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152 |
FT_LOCAL_DEF( FT_Error )
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153 |
pfr_header_load( PFR_Header header,
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154 |
FT_Stream stream )
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155 |
{
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156 |
FT_Error error;
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157 |
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158 |
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159 |
/* read header directly */
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160 |
if ( !FT_STREAM_SEEK( 0 ) &&
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161 |
!FT_STREAM_READ_FIELDS( pfr_header_fields, header ) )
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162 |
{
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163 |
/* make a few adjustments to the header */
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164 |
header->phy_font_max_size +=
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165 |
(FT_UInt32)header->phy_font_max_size_high << 16;
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166 |
}
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167 |
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168 |
return error;
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169 |
}
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170 |
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171 |
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172 |
FT_LOCAL_DEF( FT_Bool )
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173 |
pfr_header_check( PFR_Header header )
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174 |
{
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175 |
FT_Bool result = 1;
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176 |
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177 |
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178 |
/* check signature and header size */
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179 |
if ( header->signature != 0x50465230L || /* "PFR0" */
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180 |
header->version > 4 ||
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181 |
header->header_size < 58 ||
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182 |
header->signature2 != 0x0d0a ) /* CR/LF */
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183 |
{
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184 |
result = 0;
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185 |
}
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186 |
return result;
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187 |
}
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188 |
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189 |
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190 |
/***********************************************************************/
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191 |
/***********************************************************************/
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192 |
/***** *****/
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193 |
/***** PFR LOGICAL FONTS *****/
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194 |
/***** *****/
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195 |
/***********************************************************************/
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196 |
/***********************************************************************/
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197 |
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198 |
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199 |
FT_LOCAL_DEF( FT_Error )
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200 |
pfr_log_font_count( FT_Stream stream,
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201 |
FT_UInt32 section_offset,
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202 |
FT_UInt *acount )
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203 |
{
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204 |
FT_Error error;
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205 |
FT_UInt count;
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206 |
FT_UInt result = 0;
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207 |
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208 |
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209 |
if ( FT_STREAM_SEEK( section_offset ) || FT_READ_USHORT( count ) )
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210 |
goto Exit;
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211 |
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212 |
result = count;
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213 |
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214 |
Exit:
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215 |
*acount = result;
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216 |
return error;
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217 |
}
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218 |
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219 |
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220 |
FT_LOCAL_DEF( FT_Error )
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221 |
pfr_log_font_load( PFR_LogFont log_font,
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222 |
FT_Stream stream,
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223 |
FT_UInt idx,
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224 |
FT_UInt32 section_offset,
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225 |
FT_Bool size_increment )
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226 |
{
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227 |
FT_UInt num_log_fonts;
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228 |
FT_UInt flags;
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229 |
FT_UInt32 offset;
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230 |
FT_UInt32 size;
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231 |
FT_Error error;
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232 |
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233 |
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234 |
if ( FT_STREAM_SEEK( section_offset ) ||
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235 |
FT_READ_USHORT( num_log_fonts ) )
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236 |
goto Exit;
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237 |
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238 |
if ( idx >= num_log_fonts )
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239 |
return PFR_Err_Invalid_Argument;
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240 |
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241 |
if ( FT_STREAM_SKIP( idx * 5 ) ||
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242 |
FT_READ_USHORT( size ) ||
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243 |
FT_READ_UOFF3 ( offset ) )
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244 |
goto Exit;
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245 |
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246 |
/* save logical font size and offset */
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247 |
log_font->size = size;
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248 |
log_font->offset = offset;
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249 |
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250 |
/* now, check the rest of the table before loading it */
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251 |
{
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252 |
FT_Byte* p;
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253 |
FT_Byte* limit;
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254 |
FT_UInt local;
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255 |
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256 |
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257 |
if ( FT_STREAM_SEEK( offset ) || FT_FRAME_ENTER( size ) )
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258 |
goto Exit;
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259 |
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260 |
p = stream->cursor;
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261 |
limit = p + size;
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262 |
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263 |
PFR_CHECK(13);
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264 |
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265 |
log_font->matrix[0] = PFR_NEXT_LONG( p );
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266 |
log_font->matrix[1] = PFR_NEXT_LONG( p );
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267 |
log_font->matrix[2] = PFR_NEXT_LONG( p );
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268 |
log_font->matrix[3] = PFR_NEXT_LONG( p );
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269 |
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270 |
flags = PFR_NEXT_BYTE( p );
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271 |
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272 |
local = 0;
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273 |
if ( flags & PFR_LOG_STROKE )
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274 |
{
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275 |
local++;
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276 |
if ( flags & PFR_LOG_2BYTE_STROKE )
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277 |
local++;
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278 |
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279 |
if ( (flags & PFR_LINE_JOIN_MASK) == PFR_LINE_JOIN_MITER )
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280 |
local += 3;
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281 |
}
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282 |
if ( flags & PFR_LOG_BOLD )
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283 |
{
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284 |
local++;
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285 |
if ( flags & PFR_LOG_2BYTE_BOLD )
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286 |
local++;
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287 |
}
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288 |
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289 |
PFR_CHECK( local );
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290 |
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291 |
if ( flags & PFR_LOG_STROKE )
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292 |
{
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293 |
log_font->stroke_thickness = ( flags & PFR_LOG_2BYTE_STROKE )
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294 |
? PFR_NEXT_SHORT( p )
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295 |
: PFR_NEXT_BYTE( p );
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296 |
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297 |
if ( ( flags & PFR_LINE_JOIN_MASK ) == PFR_LINE_JOIN_MITER )
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298 |
log_font->miter_limit = PFR_NEXT_LONG( p );
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299 |
}
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300 |
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301 |
if ( flags & PFR_LOG_BOLD )
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302 |
{
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303 |
log_font->bold_thickness = ( flags & PFR_LOG_2BYTE_BOLD )
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304 |
? PFR_NEXT_SHORT( p )
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305 |
: PFR_NEXT_BYTE( p );
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306 |
}
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307 |
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308 |
if ( flags & PFR_LOG_EXTRA_ITEMS )
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309 |
{
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310 |
error = pfr_extra_items_skip( &p, limit );
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311 |
if (error) goto Fail;
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312 |
}
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313 |
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314 |
PFR_CHECK(5);
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315 |
log_font->phys_size = PFR_NEXT_USHORT( p );
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316 |
log_font->phys_offset = PFR_NEXT_ULONG( p );
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317 |
if ( size_increment )
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318 |
{
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|
319 |
PFR_CHECK( 1 );
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|
320 |
log_font->phys_size += (FT_UInt32)PFR_NEXT_BYTE( p ) << 16;
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|
321 |
}
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|
322 |
}
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323 |
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324 |
Fail:
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325 |
FT_FRAME_EXIT();
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326 |
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327 |
Exit:
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328 |
return error;
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329 |
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330 |
Too_Short:
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|
331 |
FT_ERROR(( "pfr_log_font_load: invalid logical font table\n" ));
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|
332 |
error = PFR_Err_Invalid_Table;
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|
333 |
goto Fail;
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|
334 |
}
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335 |
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336 |
|
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|
337 |
/***********************************************************************/
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|
338 |
/***********************************************************************/
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|
339 |
/***** *****/
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|
340 |
/***** PFR PHYSICAL FONTS *****/
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|
341 |
/***** *****/
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|
342 |
/***********************************************************************/
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|
343 |
/***********************************************************************/
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344 |
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345 |
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|
346 |
/* load bitmap strikes lists */
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|
347 |
FT_CALLBACK_DEF( FT_Error )
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|
348 |
pfr_extra_item_load_bitmap_info( FT_Byte* p,
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|
349 |
FT_Byte* limit,
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|
350 |
PFR_PhyFont phy_font )
|
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|
351 |
{
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|
352 |
FT_Memory memory = phy_font->memory;
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|
353 |
PFR_Strike strike;
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|
354 |
FT_UInt flags0;
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|
355 |
FT_UInt n, count, size1;
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|
356 |
FT_Error error = PFR_Err_Ok;
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357 |
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358 |
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|
359 |
PFR_CHECK( 5 );
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|
360 |
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|
361 |
p += 3; /* skip bctSize */
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|
362 |
flags0 = PFR_NEXT_BYTE( p );
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|
363 |
count = PFR_NEXT_BYTE( p );
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|
|
364 |
|
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|
365 |
/* re-allocate when needed */
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|
|
366 |
if ( phy_font->num_strikes + count > phy_font->max_strikes )
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|
|
367 |
{
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|
368 |
FT_UInt new_max = FT_PAD_CEIL( phy_font->num_strikes + count, 4 );
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|
369 |
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|
370 |
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|
371 |
if ( FT_RENEW_ARRAY( phy_font->strikes,
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|
372 |
phy_font->num_strikes,
|
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|
373 |
new_max ) )
|
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|
374 |
goto Exit;
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|
375 |
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|
376 |
phy_font->max_strikes = new_max;
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|
|
377 |
}
|
|
|
378 |
|
|
|
379 |
size1 = 1 + 1 + 1 + 2 + 2 + 1;
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|
|
380 |
if ( flags0 & PFR_STRIKE_2BYTE_XPPM )
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|
381 |
size1++;
|
|
|
382 |
|
|
|
383 |
if ( flags0 & PFR_STRIKE_2BYTE_YPPM )
|
|
|
384 |
size1++;
|
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|
385 |
|
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|
386 |
if ( flags0 & PFR_STRIKE_3BYTE_SIZE )
|
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|
387 |
size1++;
|
|
|
388 |
|
|
|
389 |
if ( flags0 & PFR_STRIKE_3BYTE_OFFSET )
|
|
|
390 |
size1++;
|
|
|
391 |
|
|
|
392 |
if ( flags0 & PFR_STRIKE_2BYTE_COUNT )
|
|
|
393 |
size1++;
|
|
|
394 |
|
|
|
395 |
strike = phy_font->strikes + phy_font->num_strikes;
|
|
|
396 |
|
|
|
397 |
PFR_CHECK( count * size1 );
|
|
|
398 |
|
|
|
399 |
for ( n = 0; n < count; n++, strike++ )
|
|
|
400 |
{
|
|
|
401 |
strike->x_ppm = ( flags0 & PFR_STRIKE_2BYTE_XPPM )
|
|
|
402 |
? PFR_NEXT_USHORT( p )
|
|
|
403 |
: PFR_NEXT_BYTE( p );
|
|
|
404 |
|
|
|
405 |
strike->y_ppm = ( flags0 & PFR_STRIKE_2BYTE_YPPM )
|
|
|
406 |
? PFR_NEXT_USHORT( p )
|
|
|
407 |
: PFR_NEXT_BYTE( p );
|
|
|
408 |
|
|
|
409 |
strike->flags = PFR_NEXT_BYTE( p );
|
|
|
410 |
|
|
|
411 |
strike->bct_size = ( flags0 & PFR_STRIKE_3BYTE_SIZE )
|
|
|
412 |
? PFR_NEXT_ULONG( p )
|
|
|
413 |
: PFR_NEXT_USHORT( p );
|
|
|
414 |
|
|
|
415 |
strike->bct_offset = ( flags0 & PFR_STRIKE_3BYTE_OFFSET )
|
|
|
416 |
? PFR_NEXT_ULONG( p )
|
|
|
417 |
: PFR_NEXT_USHORT( p );
|
|
|
418 |
|
|
|
419 |
strike->num_bitmaps = ( flags0 & PFR_STRIKE_2BYTE_COUNT )
|
|
|
420 |
? PFR_NEXT_USHORT( p )
|
|
|
421 |
: PFR_NEXT_BYTE( p );
|
|
|
422 |
}
|
|
|
423 |
|
|
|
424 |
phy_font->num_strikes += count;
|
|
|
425 |
|
|
|
426 |
Exit:
|
|
|
427 |
return error;
|
|
|
428 |
|
|
|
429 |
Too_Short:
|
|
|
430 |
error = PFR_Err_Invalid_Table;
|
|
|
431 |
FT_ERROR(( "pfr_extra_item_load_bitmap_info:"
|
|
|
432 |
" invalid bitmap info table\n" ));
|
|
|
433 |
goto Exit;
|
|
|
434 |
}
|
|
|
435 |
|
|
|
436 |
|
|
|
437 |
/* Load font ID. This is a so-called "unique" name that is rather
|
|
|
438 |
* long and descriptive (like "Tiresias ScreenFont v7.51").
|
|
|
439 |
*
|
|
|
440 |
* Note that a PFR font's family name is contained in an *undocumented*
|
|
|
441 |
* string of the "auxiliary data" portion of a physical font record. This
|
|
|
442 |
* may also contain the "real" style name!
|
|
|
443 |
*
|
|
|
444 |
* If no family name is present, the font ID is used instead for the
|
|
|
445 |
* family.
|
|
|
446 |
*/
|
|
|
447 |
FT_CALLBACK_DEF( FT_Error )
|
|
|
448 |
pfr_extra_item_load_font_id( FT_Byte* p,
|
|
|
449 |
FT_Byte* limit,
|
|
|
450 |
PFR_PhyFont phy_font )
|
|
|
451 |
{
|
|
|
452 |
FT_Error error = PFR_Err_Ok;
|
|
|
453 |
FT_Memory memory = phy_font->memory;
|
|
|
454 |
FT_PtrDist len = limit - p;
|
|
|
455 |
|
|
|
456 |
|
|
|
457 |
if ( phy_font->font_id != NULL )
|
|
|
458 |
goto Exit;
|
|
|
459 |
|
|
|
460 |
if ( FT_ALLOC( phy_font->font_id, len + 1 ) )
|
|
|
461 |
goto Exit;
|
|
|
462 |
|
|
|
463 |
/* copy font ID name, and terminate it for safety */
|
|
|
464 |
FT_MEM_COPY( phy_font->font_id, p, len );
|
|
|
465 |
phy_font->font_id[len] = 0;
|
|
|
466 |
|
|
|
467 |
Exit:
|
|
|
468 |
return error;
|
|
|
469 |
}
|
|
|
470 |
|
|
|
471 |
|
|
|
472 |
/* load stem snap tables */
|
|
|
473 |
FT_CALLBACK_DEF( FT_Error )
|
|
|
474 |
pfr_extra_item_load_stem_snaps( FT_Byte* p,
|
|
|
475 |
FT_Byte* limit,
|
|
|
476 |
PFR_PhyFont phy_font )
|
|
|
477 |
{
|
|
|
478 |
FT_UInt count, num_vert, num_horz;
|
|
|
479 |
FT_Int* snaps;
|
|
|
480 |
FT_Error error = PFR_Err_Ok;
|
|
|
481 |
FT_Memory memory = phy_font->memory;
|
|
|
482 |
|
|
|
483 |
|
|
|
484 |
if ( phy_font->vertical.stem_snaps != NULL )
|
|
|
485 |
goto Exit;
|
|
|
486 |
|
|
|
487 |
PFR_CHECK( 1 );
|
|
|
488 |
count = PFR_NEXT_BYTE( p );
|
|
|
489 |
|
|
|
490 |
num_vert = count & 15;
|
|
|
491 |
num_horz = count >> 4;
|
|
|
492 |
count = num_vert + num_horz;
|
|
|
493 |
|
|
|
494 |
PFR_CHECK( count * 2 );
|
|
|
495 |
|
|
|
496 |
if ( FT_NEW_ARRAY( snaps, count ) )
|
|
|
497 |
goto Exit;
|
|
|
498 |
|
|
|
499 |
phy_font->vertical.stem_snaps = snaps;
|
|
|
500 |
phy_font->horizontal.stem_snaps = snaps + num_vert;
|
|
|
501 |
|
|
|
502 |
for ( ; count > 0; count--, snaps++ )
|
|
|
503 |
*snaps = FT_NEXT_SHORT( p );
|
|
|
504 |
|
|
|
505 |
Exit:
|
|
|
506 |
return error;
|
|
|
507 |
|
|
|
508 |
Too_Short:
|
|
|
509 |
error = PFR_Err_Invalid_Table;
|
|
|
510 |
FT_ERROR(( "pfr_exta_item_load_stem_snaps:"
|
|
|
511 |
" invalid stem snaps table\n" ));
|
|
|
512 |
goto Exit;
|
|
|
513 |
}
|
|
|
514 |
|
|
|
515 |
|
|
|
516 |
|
|
|
517 |
/* load kerning pair data */
|
|
|
518 |
FT_CALLBACK_DEF( FT_Error )
|
|
|
519 |
pfr_extra_item_load_kerning_pairs( FT_Byte* p,
|
|
|
520 |
FT_Byte* limit,
|
|
|
521 |
PFR_PhyFont phy_font )
|
|
|
522 |
{
|
|
|
523 |
PFR_KernItem item = NULL;
|
|
|
524 |
FT_Error error = PFR_Err_Ok;
|
|
|
525 |
FT_Memory memory = phy_font->memory;
|
|
|
526 |
|
|
|
527 |
|
|
|
528 |
FT_TRACE2(( "pfr_extra_item_load_kerning_pairs()\n" ));
|
|
|
529 |
|
|
|
530 |
if ( FT_NEW( item ) )
|
|
|
531 |
goto Exit;
|
|
|
532 |
|
|
|
533 |
PFR_CHECK( 4 );
|
|
|
534 |
|
|
|
535 |
item->pair_count = PFR_NEXT_BYTE( p );
|
|
|
536 |
item->base_adj = PFR_NEXT_SHORT( p );
|
|
|
537 |
item->flags = PFR_NEXT_BYTE( p );
|
|
|
538 |
item->offset = phy_font->offset + ( p - phy_font->cursor );
|
|
|
539 |
|
|
|
540 |
#ifndef PFR_CONFIG_NO_CHECKS
|
|
|
541 |
item->pair_size = 3;
|
|
|
542 |
|
|
|
543 |
if ( item->flags & PFR_KERN_2BYTE_CHAR )
|
|
|
544 |
item->pair_size += 2;
|
|
|
545 |
|
|
|
546 |
if ( item->flags & PFR_KERN_2BYTE_ADJ )
|
|
|
547 |
item->pair_size += 1;
|
|
|
548 |
|
|
|
549 |
PFR_CHECK( item->pair_count * item->pair_size );
|
|
|
550 |
#endif
|
|
|
551 |
|
|
|
552 |
/* load first and last pairs into the item to speed up */
|
|
|
553 |
/* lookup later... */
|
|
|
554 |
if ( item->pair_count > 0 )
|
|
|
555 |
{
|
|
|
556 |
FT_UInt char1, char2;
|
|
|
557 |
FT_Byte* q;
|
|
|
558 |
|
|
|
559 |
|
|
|
560 |
if ( item->flags & PFR_KERN_2BYTE_CHAR )
|
|
|
561 |
{
|
|
|
562 |
q = p;
|
|
|
563 |
char1 = PFR_NEXT_USHORT( q );
|
|
|
564 |
char2 = PFR_NEXT_USHORT( q );
|
|
|
565 |
|
|
|
566 |
item->pair1 = PFR_KERN_INDEX( char1, char2 );
|
|
|
567 |
|
|
|
568 |
q = p + item->pair_size * ( item->pair_count - 1 );
|
|
|
569 |
char1 = PFR_NEXT_USHORT( q );
|
|
|
570 |
char2 = PFR_NEXT_USHORT( q );
|
|
|
571 |
|
|
|
572 |
item->pair2 = PFR_KERN_INDEX( char1, char2 );
|
|
|
573 |
}
|
|
|
574 |
else
|
|
|
575 |
{
|
|
|
576 |
q = p;
|
|
|
577 |
char1 = PFR_NEXT_BYTE( q );
|
|
|
578 |
char2 = PFR_NEXT_BYTE( q );
|
|
|
579 |
|
|
|
580 |
item->pair1 = PFR_KERN_INDEX( char1, char2 );
|
|
|
581 |
|
|
|
582 |
q = p + item->pair_size * ( item->pair_count - 1 );
|
|
|
583 |
char1 = PFR_NEXT_BYTE( q );
|
|
|
584 |
char2 = PFR_NEXT_BYTE( q );
|
|
|
585 |
|
|
|
586 |
item->pair2 = PFR_KERN_INDEX( char1, char2 );
|
|
|
587 |
}
|
|
|
588 |
|
|
|
589 |
/* add new item to the current list */
|
|
|
590 |
item->next = NULL;
|
|
|
591 |
*phy_font->kern_items_tail = item;
|
|
|
592 |
phy_font->kern_items_tail = &item->next;
|
|
|
593 |
phy_font->num_kern_pairs += item->pair_count;
|
|
|
594 |
}
|
|
|
595 |
else
|
|
|
596 |
{
|
|
|
597 |
/* empty item! */
|
|
|
598 |
FT_FREE( item );
|
|
|
599 |
}
|
|
|
600 |
|
|
|
601 |
Exit:
|
|
|
602 |
return error;
|
|
|
603 |
|
|
|
604 |
Too_Short:
|
|
|
605 |
FT_FREE( item );
|
|
|
606 |
|
|
|
607 |
error = PFR_Err_Invalid_Table;
|
|
|
608 |
FT_ERROR(( "pfr_extra_item_load_kerning_pairs:"
|
|
|
609 |
" invalid kerning pairs table\n" ));
|
|
|
610 |
goto Exit;
|
|
|
611 |
}
|
|
|
612 |
|
|
|
613 |
|
|
|
614 |
|
|
|
615 |
static const PFR_ExtraItemRec pfr_phy_font_extra_items[] =
|
|
|
616 |
{
|
|
|
617 |
{ 1, (PFR_ExtraItem_ParseFunc)pfr_extra_item_load_bitmap_info },
|
|
|
618 |
{ 2, (PFR_ExtraItem_ParseFunc)pfr_extra_item_load_font_id },
|
|
|
619 |
{ 3, (PFR_ExtraItem_ParseFunc)pfr_extra_item_load_stem_snaps },
|
|
|
620 |
{ 4, (PFR_ExtraItem_ParseFunc)pfr_extra_item_load_kerning_pairs },
|
|
|
621 |
{ 0, NULL }
|
|
|
622 |
};
|
|
|
623 |
|
|
|
624 |
|
|
|
625 |
/* Loads a name from the auxiliary data. Since this extracts undocumented
|
|
|
626 |
* strings from the font file, we need to be careful here.
|
|
|
627 |
*/
|
|
|
628 |
static FT_Error
|
|
|
629 |
pfr_aux_name_load( FT_Byte* p,
|
|
|
630 |
FT_UInt len,
|
|
|
631 |
FT_Memory memory,
|
|
|
632 |
FT_String* *astring )
|
|
|
633 |
{
|
|
|
634 |
FT_Error error = PFR_Err_Ok;
|
|
|
635 |
FT_String* result = NULL;
|
|
|
636 |
FT_UInt n, ok;
|
|
|
637 |
|
|
|
638 |
|
|
|
639 |
if ( len > 0 && p[len - 1] == 0 )
|
|
|
640 |
len--;
|
|
|
641 |
|
|
|
642 |
/* check that each character is ASCII for making sure not to
|
|
|
643 |
load garbage
|
|
|
644 |
*/
|
|
|
645 |
ok = ( len > 0 );
|
|
|
646 |
for ( n = 0; n < len; n++ )
|
|
|
647 |
if ( p[n] < 32 || p[n] > 127 )
|
|
|
648 |
{
|
|
|
649 |
ok = 0;
|
|
|
650 |
break;
|
|
|
651 |
}
|
|
|
652 |
|
|
|
653 |
if ( ok )
|
|
|
654 |
{
|
|
|
655 |
if ( FT_ALLOC( result, len + 1 ) )
|
|
|
656 |
goto Exit;
|
|
|
657 |
|
|
|
658 |
FT_MEM_COPY( result, p, len );
|
|
|
659 |
result[len] = 0;
|
|
|
660 |
}
|
|
|
661 |
Exit:
|
|
|
662 |
*astring = result;
|
|
|
663 |
return error;
|
|
|
664 |
}
|
|
|
665 |
|
|
|
666 |
|
|
|
667 |
FT_LOCAL_DEF( void )
|
|
|
668 |
pfr_phy_font_done( PFR_PhyFont phy_font,
|
|
|
669 |
FT_Memory memory )
|
|
|
670 |
{
|
|
|
671 |
FT_FREE( phy_font->font_id );
|
|
|
672 |
FT_FREE( phy_font->family_name );
|
|
|
673 |
FT_FREE( phy_font->style_name );
|
|
|
674 |
|
|
|
675 |
FT_FREE( phy_font->vertical.stem_snaps );
|
|
|
676 |
phy_font->vertical.num_stem_snaps = 0;
|
|
|
677 |
|
|
|
678 |
phy_font->horizontal.stem_snaps = NULL;
|
|
|
679 |
phy_font->horizontal.num_stem_snaps = 0;
|
|
|
680 |
|
|
|
681 |
FT_FREE( phy_font->strikes );
|
|
|
682 |
phy_font->num_strikes = 0;
|
|
|
683 |
phy_font->max_strikes = 0;
|
|
|
684 |
|
|
|
685 |
FT_FREE( phy_font->chars );
|
|
|
686 |
phy_font->num_chars = 0;
|
|
|
687 |
phy_font->chars_offset = 0;
|
|
|
688 |
|
|
|
689 |
FT_FREE( phy_font->blue_values );
|
|
|
690 |
phy_font->num_blue_values = 0;
|
|
|
691 |
|
|
|
692 |
{
|
|
|
693 |
PFR_KernItem item, next;
|
|
|
694 |
|
|
|
695 |
|
|
|
696 |
item = phy_font->kern_items;
|
|
|
697 |
while ( item )
|
|
|
698 |
{
|
|
|
699 |
next = item->next;
|
|
|
700 |
FT_FREE( item );
|
|
|
701 |
item = next;
|
|
|
702 |
}
|
|
|
703 |
phy_font->kern_items = NULL;
|
|
|
704 |
phy_font->kern_items_tail = NULL;
|
|
|
705 |
}
|
|
|
706 |
|
|
|
707 |
phy_font->num_kern_pairs = 0;
|
|
|
708 |
}
|
|
|
709 |
|
|
|
710 |
|
|
|
711 |
FT_LOCAL_DEF( FT_Error )
|
|
|
712 |
pfr_phy_font_load( PFR_PhyFont phy_font,
|
|
|
713 |
FT_Stream stream,
|
|
|
714 |
FT_UInt32 offset,
|
|
|
715 |
FT_UInt32 size )
|
|
|
716 |
{
|
|
|
717 |
FT_Error error;
|
|
|
718 |
FT_Memory memory = stream->memory;
|
|
|
719 |
FT_UInt flags;
|
|
|
720 |
FT_ULong num_aux;
|
|
|
721 |
FT_Byte* p;
|
|
|
722 |
FT_Byte* limit;
|
|
|
723 |
|
|
|
724 |
|
|
|
725 |
phy_font->memory = memory;
|
|
|
726 |
phy_font->offset = offset;
|
|
|
727 |
|
|
|
728 |
phy_font->kern_items = NULL;
|
|
|
729 |
phy_font->kern_items_tail = &phy_font->kern_items;
|
|
|
730 |
|
|
|
731 |
if ( FT_STREAM_SEEK( offset ) || FT_FRAME_ENTER( size ) )
|
|
|
732 |
goto Exit;
|
|
|
733 |
|
|
|
734 |
phy_font->cursor = stream->cursor;
|
|
|
735 |
|
|
|
736 |
p = stream->cursor;
|
|
|
737 |
limit = p + size;
|
|
|
738 |
|
|
|
739 |
PFR_CHECK( 15 );
|
|
|
740 |
phy_font->font_ref_number = PFR_NEXT_USHORT( p );
|
|
|
741 |
phy_font->outline_resolution = PFR_NEXT_USHORT( p );
|
|
|
742 |
phy_font->metrics_resolution = PFR_NEXT_USHORT( p );
|
|
|
743 |
phy_font->bbox.xMin = PFR_NEXT_SHORT( p );
|
|
|
744 |
phy_font->bbox.yMin = PFR_NEXT_SHORT( p );
|
|
|
745 |
phy_font->bbox.xMax = PFR_NEXT_SHORT( p );
|
|
|
746 |
phy_font->bbox.yMax = PFR_NEXT_SHORT( p );
|
|
|
747 |
phy_font->flags = flags = PFR_NEXT_BYTE( p );
|
|
|
748 |
|
|
|
749 |
/* get the standard advance for non-proportional fonts */
|
|
|
750 |
if ( !(flags & PFR_PHY_PROPORTIONAL) )
|
|
|
751 |
{
|
|
|
752 |
PFR_CHECK( 2 );
|
|
|
753 |
phy_font->standard_advance = PFR_NEXT_SHORT( p );
|
|
|
754 |
}
|
|
|
755 |
|
|
|
756 |
/* load the extra items when present */
|
|
|
757 |
if ( flags & PFR_PHY_EXTRA_ITEMS )
|
|
|
758 |
{
|
|
|
759 |
error = pfr_extra_items_parse( &p, limit,
|
|
|
760 |
pfr_phy_font_extra_items, phy_font );
|
|
|
761 |
|
|
|
762 |
if ( error )
|
|
|
763 |
goto Fail;
|
|
|
764 |
}
|
|
|
765 |
|
|
|
766 |
/* In certain fonts, the auxiliary bytes contain interesting */
|
|
|
767 |
/* information. These are not in the specification but can be */
|
|
|
768 |
/* guessed by looking at the content of a few PFR0 fonts. */
|
|
|
769 |
PFR_CHECK( 3 );
|
|
|
770 |
num_aux = PFR_NEXT_ULONG( p );
|
|
|
771 |
|
|
|
772 |
if ( num_aux > 0 )
|
|
|
773 |
{
|
|
|
774 |
FT_Byte* q = p;
|
|
|
775 |
FT_Byte* q2;
|
|
|
776 |
|
|
|
777 |
|
|
|
778 |
PFR_CHECK( num_aux );
|
|
|
779 |
p += num_aux;
|
|
|
780 |
|
|
|
781 |
while ( num_aux > 0 )
|
|
|
782 |
{
|
|
|
783 |
FT_UInt length, type;
|
|
|
784 |
|
|
|
785 |
|
|
|
786 |
if ( q + 4 > p )
|
|
|
787 |
break;
|
|
|
788 |
|
|
|
789 |
length = PFR_NEXT_USHORT( q );
|
|
|
790 |
if ( length < 4 || length > num_aux )
|
|
|
791 |
break;
|
|
|
792 |
|
|
|
793 |
q2 = q + length - 2;
|
|
|
794 |
type = PFR_NEXT_USHORT( q );
|
|
|
795 |
|
|
|
796 |
switch ( type )
|
|
|
797 |
{
|
|
|
798 |
case 1:
|
|
|
799 |
/* this seems to correspond to the font's family name,
|
|
|
800 |
* padded to 16-bits with one zero when necessary
|
|
|
801 |
*/
|
|
|
802 |
error = pfr_aux_name_load( q, length - 4U, memory,
|
|
|
803 |
&phy_font->family_name );
|
|
|
804 |
if ( error )
|
|
|
805 |
goto Exit;
|
|
|
806 |
break;
|
|
|
807 |
|
|
|
808 |
case 2:
|
|
|
809 |
if ( q + 32 > q2 )
|
|
|
810 |
break;
|
|
|
811 |
|
|
|
812 |
q += 10;
|
|
|
813 |
phy_font->ascent = PFR_NEXT_SHORT( q );
|
|
|
814 |
phy_font->descent = PFR_NEXT_SHORT( q );
|
|
|
815 |
phy_font->leading = PFR_NEXT_SHORT( q );
|
|
|
816 |
q += 16;
|
|
|
817 |
break;
|
|
|
818 |
|
|
|
819 |
case 3:
|
|
|
820 |
/* this seems to correspond to the font's style name,
|
|
|
821 |
* padded to 16-bits with one zero when necessary
|
|
|
822 |
*/
|
|
|
823 |
error = pfr_aux_name_load( q, length - 4U, memory,
|
|
|
824 |
&phy_font->style_name );
|
|
|
825 |
if ( error )
|
|
|
826 |
goto Exit;
|
|
|
827 |
break;
|
|
|
828 |
|
|
|
829 |
default:
|
|
|
830 |
;
|
|
|
831 |
}
|
|
|
832 |
|
|
|
833 |
q = q2;
|
|
|
834 |
num_aux -= length;
|
|
|
835 |
}
|
|
|
836 |
}
|
|
|
837 |
|
|
|
838 |
/* read the blue values */
|
|
|
839 |
{
|
|
|
840 |
FT_UInt n, count;
|
|
|
841 |
|
|
|
842 |
|
|
|
843 |
PFR_CHECK( 1 );
|
|
|
844 |
phy_font->num_blue_values = count = PFR_NEXT_BYTE( p );
|
|
|
845 |
|
|
|
846 |
PFR_CHECK( count * 2 );
|
|
|
847 |
|
|
|
848 |
if ( FT_NEW_ARRAY( phy_font->blue_values, count ) )
|
|
|
849 |
goto Fail;
|
|
|
850 |
|
|
|
851 |
for ( n = 0; n < count; n++ )
|
|
|
852 |
phy_font->blue_values[n] = PFR_NEXT_SHORT( p );
|
|
|
853 |
}
|
|
|
854 |
|
|
|
855 |
PFR_CHECK( 8 );
|
|
|
856 |
phy_font->blue_fuzz = PFR_NEXT_BYTE( p );
|
|
|
857 |
phy_font->blue_scale = PFR_NEXT_BYTE( p );
|
|
|
858 |
|
|
|
859 |
phy_font->vertical.standard = PFR_NEXT_USHORT( p );
|
|
|
860 |
phy_font->horizontal.standard = PFR_NEXT_USHORT( p );
|
|
|
861 |
|
|
|
862 |
/* read the character descriptors */
|
|
|
863 |
{
|
|
|
864 |
FT_UInt n, count, Size;
|
|
|
865 |
|
|
|
866 |
|
|
|
867 |
phy_font->num_chars = count = PFR_NEXT_USHORT( p );
|
|
|
868 |
phy_font->chars_offset = offset + ( p - stream->cursor );
|
|
|
869 |
|
|
|
870 |
if ( FT_NEW_ARRAY( phy_font->chars, count ) )
|
|
|
871 |
goto Fail;
|
|
|
872 |
|
|
|
873 |
Size = 1 + 1 + 2;
|
|
|
874 |
if ( flags & PFR_PHY_2BYTE_CHARCODE )
|
|
|
875 |
Size += 1;
|
|
|
876 |
|
|
|
877 |
if ( flags & PFR_PHY_PROPORTIONAL )
|
|
|
878 |
Size += 2;
|
|
|
879 |
|
|
|
880 |
if ( flags & PFR_PHY_ASCII_CODE )
|
|
|
881 |
Size += 1;
|
|
|
882 |
|
|
|
883 |
if ( flags & PFR_PHY_2BYTE_GPS_SIZE )
|
|
|
884 |
Size += 1;
|
|
|
885 |
|
|
|
886 |
if ( flags & PFR_PHY_3BYTE_GPS_OFFSET )
|
|
|
887 |
Size += 1;
|
|
|
888 |
|
|
|
889 |
PFR_CHECK( count * Size );
|
|
|
890 |
|
|
|
891 |
for ( n = 0; n < count; n++ )
|
|
|
892 |
{
|
|
|
893 |
PFR_Char cur = &phy_font->chars[n];
|
|
|
894 |
|
|
|
895 |
|
|
|
896 |
cur->char_code = ( flags & PFR_PHY_2BYTE_CHARCODE )
|
|
|
897 |
? PFR_NEXT_USHORT( p )
|
|
|
898 |
: PFR_NEXT_BYTE( p );
|
|
|
899 |
|
|
|
900 |
cur->advance = ( flags & PFR_PHY_PROPORTIONAL )
|
|
|
901 |
? PFR_NEXT_SHORT( p )
|
|
|
902 |
: (FT_Int) phy_font->standard_advance;
|
|
|
903 |
|
|
|
904 |
#if 0
|
|
|
905 |
cur->ascii = ( flags & PFR_PHY_ASCII_CODE )
|
|
|
906 |
? PFR_NEXT_BYTE( p )
|
|
|
907 |
: 0;
|
|
|
908 |
#else
|
|
|
909 |
if ( flags & PFR_PHY_ASCII_CODE )
|
|
|
910 |
p += 1;
|
|
|
911 |
#endif
|
|
|
912 |
cur->gps_size = ( flags & PFR_PHY_2BYTE_GPS_SIZE )
|
|
|
913 |
? PFR_NEXT_USHORT( p )
|
|
|
914 |
: PFR_NEXT_BYTE( p );
|
|
|
915 |
|
|
|
916 |
cur->gps_offset = ( flags & PFR_PHY_3BYTE_GPS_OFFSET )
|
|
|
917 |
? PFR_NEXT_ULONG( p )
|
|
|
918 |
: PFR_NEXT_USHORT( p );
|
|
|
919 |
}
|
|
|
920 |
}
|
|
|
921 |
|
|
|
922 |
/* that's it! */
|
|
|
923 |
|
|
|
924 |
Fail:
|
|
|
925 |
FT_FRAME_EXIT();
|
|
|
926 |
|
|
|
927 |
/* save position of bitmap info */
|
|
|
928 |
phy_font->bct_offset = FT_STREAM_POS();
|
|
|
929 |
phy_font->cursor = NULL;
|
|
|
930 |
|
|
|
931 |
Exit:
|
|
|
932 |
return error;
|
|
|
933 |
|
|
|
934 |
Too_Short:
|
|
|
935 |
error = PFR_Err_Invalid_Table;
|
|
|
936 |
FT_ERROR(( "pfr_phy_font_load: invalid physical font table\n" ));
|
|
|
937 |
goto Fail;
|
|
|
938 |
}
|
|
|
939 |
|
|
|
940 |
|
|
|
941 |
/* END */
|