1 /***************************************************************************/ |
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2 /* */ |
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3 /* pfrload.h */ |
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4 /* */ |
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5 /* FreeType PFR loader (specification). */ |
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6 /* */ |
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7 /* Copyright 2002 by */ |
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8 /* David Turner, Robert Wilhelm, and Werner Lemberg. */ |
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9 /* */ |
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10 /* This file is part of the FreeType project, and may only be used, */ |
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11 /* modified, and distributed under the terms of the FreeType project */ |
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12 /* license, LICENSE.TXT. By continuing to use, modify, or distribute */ |
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13 /* this file you indicate that you have read the license and */ |
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14 /* understand and accept it fully. */ |
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15 /* */ |
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16 /***************************************************************************/ |
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17 |
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18 |
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19 #ifndef __PFRLOAD_H__ |
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20 #define __PFRLOAD_H__ |
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21 |
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22 #include "pfrobjs.h" |
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23 #include FT_INTERNAL_STREAM_H |
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24 |
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25 |
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26 FT_BEGIN_HEADER |
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27 |
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28 #ifdef PFR_CONFIG_NO_CHECKS |
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29 #define PFR_CHECK( x ) do { } while ( 0 ) |
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30 #else |
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31 #define PFR_CHECK( x ) do \ |
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32 { \ |
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33 if ( p + (x) > limit ) \ |
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34 goto Too_Short; \ |
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35 } while ( 0 ) |
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36 #endif |
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37 |
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38 #define PFR_NEXT_BYTE( p ) FT_NEXT_BYTE( p ) |
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39 #define PFR_NEXT_INT8( p ) FT_NEXT_CHAR( p ) |
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40 #define PFR_NEXT_SHORT( p ) FT_NEXT_SHORT( p ) |
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41 #define PFR_NEXT_USHORT( p ) FT_NEXT_USHORT( p ) |
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42 #define PFR_NEXT_LONG( p ) FT_NEXT_OFF3( p ) |
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43 #define PFR_NEXT_ULONG( p ) FT_NEXT_UOFF3( p ) |
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44 |
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45 |
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46 /* handling extra items */ |
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47 |
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48 typedef FT_Error |
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49 (*PFR_ExtraItem_ParseFunc)( FT_Byte* p, |
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50 FT_Byte* limit, |
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51 FT_Pointer data ); |
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52 |
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53 typedef struct PFR_ExtraItemRec_ |
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54 { |
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55 FT_UInt type; |
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56 PFR_ExtraItem_ParseFunc parser; |
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57 |
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58 } PFR_ExtraItemRec; |
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59 |
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60 typedef const struct PFR_ExtraItemRec_* PFR_ExtraItem; |
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61 |
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62 |
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63 FT_LOCAL( FT_Error ) |
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64 pfr_extra_items_skip( FT_Byte* *pp, |
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65 FT_Byte* limit ); |
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66 |
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67 FT_LOCAL( FT_Error ) |
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68 pfr_extra_items_parse( FT_Byte* *pp, |
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69 FT_Byte* limit, |
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70 PFR_ExtraItem item_list, |
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71 FT_Pointer item_data ); |
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72 |
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73 |
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74 /* load a PFR header */ |
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75 FT_LOCAL( FT_Error ) |
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76 pfr_header_load( PFR_Header header, |
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77 FT_Stream stream ); |
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78 |
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79 /* check a PFR header */ |
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80 FT_LOCAL( FT_Bool ) |
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81 pfr_header_check( PFR_Header header ); |
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82 |
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83 |
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84 /* return number of logical fonts in this file */ |
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85 FT_LOCAL( FT_Error ) |
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86 pfr_log_font_count( FT_Stream stream, |
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87 FT_UInt32 log_section_offset, |
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88 FT_UInt *acount ); |
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89 |
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90 /* load a pfr logical font entry */ |
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91 FT_LOCAL( FT_Error ) |
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92 pfr_log_font_load( PFR_LogFont log_font, |
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93 FT_Stream stream, |
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94 FT_UInt face_index, |
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95 FT_UInt32 section_offset, |
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96 FT_Bool size_increment ); |
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97 |
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98 |
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99 /* load a physical font entry */ |
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100 FT_LOCAL( FT_Error ) |
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101 pfr_phy_font_load( PFR_PhyFont phy_font, |
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102 FT_Stream stream, |
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103 FT_UInt32 offset, |
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104 FT_UInt32 size ); |
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105 |
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106 /* finalize a physical font */ |
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107 FT_LOCAL( void ) |
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108 pfr_phy_font_done( PFR_PhyFont phy_font, |
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109 FT_Memory memory ); |
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110 |
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111 /* */ |
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112 |
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113 FT_END_HEADER |
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114 |
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115 #endif /* __PFRLOAD_H__ */ |
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116 |
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117 |
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118 /* END */ |
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