| 1 | /***************************************************************************/ |
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| 2 | /* */ |
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| 3 | /* ftinit.c */ |
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| 4 | /* */ |
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| 5 | /* FreeType initialization layer (body). */ |
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| 6 | /* */ |
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| 7 | /* Copyright 1996-2001, 2002, 2005, 2007 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 | /* */ |
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| 20 | /* The purpose of this file is to implement the following two */ |
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| 21 | /* functions: */ |
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| 22 | /* */ |
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| 23 | /* FT_Add_Default_Modules(): */ |
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| 24 | /* This function is used to add the set of default modules to a */ |
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| 25 | /* fresh new library object. The set is taken from the header file */ |
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| 26 | /* `freetype/config/ftmodule.h'. See the document `FreeType 2.0 */ |
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| 27 | /* Build System' for more information. */ |
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| 28 | /* */ |
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| 29 | /* FT_Init_FreeType(): */ |
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| 30 | /* This function creates a system object for the current platform, */ |
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| 31 | /* builds a library out of it, then calls FT_Default_Drivers(). */ |
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| 32 | /* */ |
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| 33 | /* Note that even if FT_Init_FreeType() uses the implementation of the */ |
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| 34 | /* system object defined at build time, client applications are still */ |
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| 35 | /* able to provide their own `ftsystem.c'. */ |
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| 36 | /* */ |
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| 37 | /*************************************************************************/ |
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| 38 | |
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| 39 | |
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| 40 | #include <ft2build.h> |
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| 41 | #include FT_CONFIG_CONFIG_H |
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| 42 | #include FT_INTERNAL_OBJECTS_H |
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| 43 | #include FT_INTERNAL_DEBUG_H |
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| 44 | #include FT_MODULE_H |
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| 45 | |
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| 46 | |
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| 47 | /*************************************************************************/ |
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| 48 | /* */ |
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| 49 | /* The macro FT_COMPONENT is used in trace mode. It is an implicit */ |
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| 50 | /* parameter of the FT_TRACE() and FT_ERROR() macros, used to print/log */ |
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| 51 | /* messages during execution. */ |
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| 52 | /* */ |
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| 53 | #undef FT_COMPONENT |
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| 54 | #define FT_COMPONENT trace_init |
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| 55 | |
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| 56 | #undef FT_USE_MODULE |
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| 57 | #ifdef __cplusplus |
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| 58 | #define FT_USE_MODULE( type, x ) extern "C" const type x; |
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| 59 | #else |
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| 60 | #define FT_USE_MODULE( type, x ) extern const type x; |
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| 61 | #endif |
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| 62 | |
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| 63 | |
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| 64 | #include FT_CONFIG_MODULES_H |
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| 65 | |
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| 66 | |
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| 67 | #undef FT_USE_MODULE |
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| 68 | #define FT_USE_MODULE( type, x ) (const FT_Module_Class*)&(x), |
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| 69 | |
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| 70 | static |
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| 71 | const FT_Module_Class* const ft_default_modules[] = |
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| 72 | { |
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| 73 | #include FT_CONFIG_MODULES_H |
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| 74 | 0 |
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| 75 | }; |
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| 76 | |
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| 77 | |
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| 78 | /* documentation is in ftmodapi.h */ |
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| 79 | |
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| 80 | FT_EXPORT_DEF( void ) |
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| 81 | FT_Add_Default_Modules( FT_Library library ) |
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| 82 | { |
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| 83 | FT_Error error; |
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| 84 | const FT_Module_Class* const* cur; |
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| 85 | |
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| 86 | |
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| 87 | /* test for valid `library' delayed to FT_Add_Module() */ |
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| 88 | |
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| 89 | cur = ft_default_modules; |
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| 90 | while ( *cur ) |
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| 91 | { |
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| 92 | error = FT_Add_Module( library, *cur ); |
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| 93 | /* notify errors, but don't stop */ |
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| 94 | if ( error ) |
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| 95 | { |
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| 96 | FT_ERROR(( "FT_Add_Default_Module: Cannot install `%s', error = 0x%x\n", |
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| 97 | (*cur)->module_name, error )); |
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| 98 | } |
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| 99 | cur++; |
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| 100 | } |
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| 101 | } |
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| 102 | |
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| 103 | |
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| 104 | /* documentation is in freetype.h */ |
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| 105 | |
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| 106 | FT_EXPORT_DEF( FT_Error ) |
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| 107 | FT_Init_FreeType( FT_Library *alibrary ) |
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| 108 | { |
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| 109 | FT_Error error; |
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| 110 | FT_Memory memory; |
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| 111 | |
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| 112 | |
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| 113 | /* First of all, allocate a new system object -- this function is part */ |
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| 114 | /* of the system-specific component, i.e. `ftsystem.c'. */ |
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| 115 | |
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| 116 | memory = FT_New_Memory(); |
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| 117 | if ( !memory ) |
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| 118 | { |
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| 119 | FT_ERROR(( "FT_Init_FreeType: cannot find memory manager\n" )); |
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| 120 | return FT_Err_Unimplemented_Feature; |
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| 121 | } |
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| 122 | |
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| 123 | /* build a library out of it, then fill it with the set of */ |
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| 124 | /* default drivers. */ |
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| 125 | |
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| 126 | error = FT_New_Library( memory, alibrary ); |
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| 127 | if ( error ) |
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| 128 | FT_Done_Memory( memory ); |
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| 129 | else |
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| 130 | { |
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| 131 | (*alibrary)->version_major = FREETYPE_MAJOR; |
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| 132 | (*alibrary)->version_minor = FREETYPE_MINOR; |
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| 133 | (*alibrary)->version_patch = FREETYPE_PATCH; |
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| 134 | |
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| 135 | FT_Add_Default_Modules( *alibrary ); |
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| 136 | } |
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| 137 | |
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| 138 | return error; |
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| 139 | } |
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| 140 | |
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| 141 | |
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| 142 | /* documentation is in freetype.h */ |
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| 143 | |
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| 144 | FT_EXPORT_DEF( FT_Error ) |
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| 145 | FT_Done_FreeType( FT_Library library ) |
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| 146 | { |
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| 147 | if ( library ) |
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| 148 | { |
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| 149 | FT_Memory memory = library->memory; |
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| 150 | |
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| 151 | |
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| 152 | /* Discard the library object */ |
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| 153 | FT_Done_Library( library ); |
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| 154 | |
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| 155 | /* discard memory manager */ |
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| 156 | FT_Done_Memory( memory ); |
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| 157 | } |
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| 158 | |
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| 159 | return FT_Err_Ok; |
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| 160 | } |
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| 161 | |
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| 162 | |
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| 163 | /* END */ |
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