David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 1 | /***************************************************************************/ |
| 2 | /* */ |
| 3 | /* ttinterp.h */ |
| 4 | /* */ |
Werner Lemberg | 78575dc | 2000-06-12 19:36:41 +0000 | [diff] [blame] | 5 | /* TrueType bytecode interpreter (specification). */ |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 6 | /* */ |
Werner Lemberg | 6da023d | 2010-05-20 15:38:00 +0200 | [diff] [blame] | 7 | /* Copyright 1996-2001, 2002, 2003, 2004, 2005, 2006, 2007, 2010 by */ |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 8 | /* David Turner, Robert Wilhelm, and Werner Lemberg. */ |
| 9 | /* */ |
Werner Lemberg | 78575dc | 2000-06-12 19:36:41 +0000 | [diff] [blame] | 10 | /* This file is part of the FreeType project, and may only be used, */ |
| 11 | /* modified, and distributed under the terms of the FreeType project */ |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 12 | /* license, LICENSE.TXT. By continuing to use, modify, or distribute */ |
| 13 | /* this file you indicate that you have read the license and */ |
| 14 | /* understand and accept it fully. */ |
| 15 | /* */ |
| 16 | /***************************************************************************/ |
| 17 | |
| 18 | |
Werner Lemberg | 90d9964 | 2000-12-09 00:45:38 +0000 | [diff] [blame] | 19 | #ifndef __TTINTERP_H__ |
| 20 | #define __TTINTERP_H__ |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 21 | |
David Turner | 19ed8af | 2000-12-08 02:42:29 +0000 | [diff] [blame] | 22 | #include <ft2build.h> |
David Turner | 8d3a401 | 2001-03-20 11:14:24 +0000 | [diff] [blame] | 23 | #include "ttobjs.h" |
David Turner | a90663f | 2000-07-08 00:41:13 +0000 | [diff] [blame] | 24 | |
Werner Lemberg | cc069be | 2000-12-08 16:17:16 +0000 | [diff] [blame] | 25 | |
David Turner | 19ed8af | 2000-12-08 02:42:29 +0000 | [diff] [blame] | 26 | FT_BEGIN_HEADER |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 27 | |
Werner Lemberg | cc069be | 2000-12-08 16:17:16 +0000 | [diff] [blame] | 28 | |
Werner Lemberg | 85cc0a3 | 2004-11-23 22:10:21 +0000 | [diff] [blame] | 29 | #ifndef TT_CONFIG_OPTION_STATIC_INTERPRETER /* indirect implementation */ |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 30 | |
Werner Lemberg | cc069be | 2000-12-08 16:17:16 +0000 | [diff] [blame] | 31 | #define EXEC_OP_ TT_ExecContext exc, |
| 32 | #define EXEC_OP TT_ExecContext exc |
| 33 | #define EXEC_ARG_ exc, |
| 34 | #define EXEC_ARG exc |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 35 | |
Werner Lemberg | 78575dc | 2000-06-12 19:36:41 +0000 | [diff] [blame] | 36 | #else /* static implementation */ |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 37 | |
Werner Lemberg | cc069be | 2000-12-08 16:17:16 +0000 | [diff] [blame] | 38 | #define EXEC_OP_ /* void */ |
| 39 | #define EXEC_OP /* void */ |
| 40 | #define EXEC_ARG_ /* void */ |
| 41 | #define EXEC_ARG /* void */ |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 42 | |
Werner Lemberg | 78575dc | 2000-06-12 19:36:41 +0000 | [diff] [blame] | 43 | #endif /* TT_CONFIG_OPTION_STATIC_INTERPRETER */ |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 44 | |
| 45 | |
| 46 | /*************************************************************************/ |
| 47 | /* */ |
| 48 | /* Rounding mode constants. */ |
| 49 | /* */ |
| 50 | #define TT_Round_Off 5 |
| 51 | #define TT_Round_To_Half_Grid 0 |
| 52 | #define TT_Round_To_Grid 1 |
| 53 | #define TT_Round_To_Double_Grid 2 |
| 54 | #define TT_Round_Up_To_Grid 4 |
| 55 | #define TT_Round_Down_To_Grid 3 |
| 56 | #define TT_Round_Super 6 |
| 57 | #define TT_Round_Super_45 7 |
| 58 | |
| 59 | |
| 60 | /*************************************************************************/ |
| 61 | /* */ |
| 62 | /* Function types used by the interpreter, depending on various modes */ |
| 63 | /* (e.g. the rounding mode, whether to render a vertical or horizontal */ |
| 64 | /* line etc). */ |
| 65 | /* */ |
| 66 | /*************************************************************************/ |
| 67 | |
| 68 | /* Rounding function */ |
Werner Lemberg | 4a2305c | 2001-06-28 07:17:51 +0000 | [diff] [blame] | 69 | typedef FT_F26Dot6 |
| 70 | (*TT_Round_Func)( EXEC_OP_ FT_F26Dot6 distance, |
| 71 | FT_F26Dot6 compensation ); |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 72 | |
| 73 | /* Point displacement along the freedom vector routine */ |
Werner Lemberg | 4a2305c | 2001-06-28 07:17:51 +0000 | [diff] [blame] | 74 | typedef void |
Werner Lemberg | 91db04c | 2002-04-01 14:25:28 +0000 | [diff] [blame] | 75 | (*TT_Move_Func)( EXEC_OP_ TT_GlyphZone zone, |
| 76 | FT_UShort point, |
| 77 | FT_F26Dot6 distance ); |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 78 | |
| 79 | /* Distance projection along one of the projection vectors */ |
Werner Lemberg | 4a2305c | 2001-06-28 07:17:51 +0000 | [diff] [blame] | 80 | typedef FT_F26Dot6 |
David Turner | 72a0dd2 | 2007-02-12 15:24:51 +0000 | [diff] [blame] | 81 | (*TT_Project_Func)( EXEC_OP_ FT_Pos dx, |
| 82 | FT_Pos dy ); |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 83 | |
| 84 | /* reading a cvt value. Take care of non-square pixels if necessary */ |
Werner Lemberg | 4a2305c | 2001-06-28 07:17:51 +0000 | [diff] [blame] | 85 | typedef FT_F26Dot6 |
Werner Lemberg | 91db04c | 2002-04-01 14:25:28 +0000 | [diff] [blame] | 86 | (*TT_Get_CVT_Func)( EXEC_OP_ FT_ULong idx ); |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 87 | |
| 88 | /* setting or moving a cvt value. Take care of non-square pixels */ |
| 89 | /* if necessary */ |
Werner Lemberg | 4a2305c | 2001-06-28 07:17:51 +0000 | [diff] [blame] | 90 | typedef void |
Werner Lemberg | 91db04c | 2002-04-01 14:25:28 +0000 | [diff] [blame] | 91 | (*TT_Set_CVT_Func)( EXEC_OP_ FT_ULong idx, |
Werner Lemberg | 4a2305c | 2001-06-28 07:17:51 +0000 | [diff] [blame] | 92 | FT_F26Dot6 value ); |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 93 | |
| 94 | |
| 95 | /*************************************************************************/ |
| 96 | /* */ |
| 97 | /* This structure defines a call record, used to manage function calls. */ |
| 98 | /* */ |
| 99 | typedef struct TT_CallRec_ |
| 100 | { |
David Turner | f9b8dec | 2000-06-16 19:34:52 +0000 | [diff] [blame] | 101 | FT_Int Caller_Range; |
| 102 | FT_Long Caller_IP; |
| 103 | FT_Long Cur_Count; |
| 104 | FT_Long Cur_Restart; |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 105 | |
| 106 | } TT_CallRec, *TT_CallStack; |
| 107 | |
| 108 | |
| 109 | /*************************************************************************/ |
| 110 | /* */ |
| 111 | /* The main structure for the interpreter which collects all necessary */ |
| 112 | /* variables and states. */ |
| 113 | /* */ |
| 114 | typedef struct TT_ExecContextRec_ |
| 115 | { |
Werner Lemberg | 91db04c | 2002-04-01 14:25:28 +0000 | [diff] [blame] | 116 | TT_Face face; |
| 117 | TT_Size size; |
| 118 | FT_Memory memory; |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 119 | |
| 120 | /* instructions state */ |
| 121 | |
Werner Lemberg | 91db04c | 2002-04-01 14:25:28 +0000 | [diff] [blame] | 122 | FT_Error error; /* last execution error */ |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 123 | |
Werner Lemberg | 91db04c | 2002-04-01 14:25:28 +0000 | [diff] [blame] | 124 | FT_Long top; /* top of exec. stack */ |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 125 | |
Werner Lemberg | 91db04c | 2002-04-01 14:25:28 +0000 | [diff] [blame] | 126 | FT_UInt stackSize; /* size of exec. stack */ |
| 127 | FT_Long* stack; /* current exec. stack */ |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 128 | |
Werner Lemberg | 91db04c | 2002-04-01 14:25:28 +0000 | [diff] [blame] | 129 | FT_Long args; |
| 130 | FT_UInt new_top; /* new top after exec. */ |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 131 | |
David Turner | b5713c5 | 2002-03-14 11:26:29 +0000 | [diff] [blame] | 132 | TT_GlyphZoneRec zp0, /* zone records */ |
Werner Lemberg | 91db04c | 2002-04-01 14:25:28 +0000 | [diff] [blame] | 133 | zp1, |
| 134 | zp2, |
| 135 | pts, |
| 136 | twilight; |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 137 | |
Werner Lemberg | 91db04c | 2002-04-01 14:25:28 +0000 | [diff] [blame] | 138 | FT_Size_Metrics metrics; |
| 139 | TT_Size_Metrics tt_metrics; /* size metrics */ |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 140 | |
Werner Lemberg | 91db04c | 2002-04-01 14:25:28 +0000 | [diff] [blame] | 141 | TT_GraphicsState GS; /* current graphics state */ |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 142 | |
Werner Lemberg | 91db04c | 2002-04-01 14:25:28 +0000 | [diff] [blame] | 143 | FT_Int curRange; /* current code range number */ |
| 144 | FT_Byte* code; /* current code range */ |
| 145 | FT_Long IP; /* current instruction pointer */ |
| 146 | FT_Long codeSize; /* size of current range */ |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 147 | |
Werner Lemberg | 91db04c | 2002-04-01 14:25:28 +0000 | [diff] [blame] | 148 | FT_Byte opcode; /* current opcode */ |
| 149 | FT_Int length; /* length of current opcode */ |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 150 | |
Werner Lemberg | 91db04c | 2002-04-01 14:25:28 +0000 | [diff] [blame] | 151 | FT_Bool step_ins; /* true if the interpreter must */ |
| 152 | /* increment IP after ins. exec */ |
Werner Lemberg | 346f186 | 2010-08-06 00:47:57 +0200 | [diff] [blame] | 153 | FT_ULong cvtSize; |
Werner Lemberg | 91db04c | 2002-04-01 14:25:28 +0000 | [diff] [blame] | 154 | FT_Long* cvt; |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 155 | |
Werner Lemberg | 91db04c | 2002-04-01 14:25:28 +0000 | [diff] [blame] | 156 | FT_UInt glyphSize; /* glyph instructions buffer size */ |
| 157 | FT_Byte* glyphIns; /* glyph instructions buffer */ |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 158 | |
Werner Lemberg | 91db04c | 2002-04-01 14:25:28 +0000 | [diff] [blame] | 159 | FT_UInt numFDefs; /* number of function defs */ |
| 160 | FT_UInt maxFDefs; /* maximum number of function defs */ |
| 161 | TT_DefArray FDefs; /* table of FDefs entries */ |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 162 | |
Werner Lemberg | 91db04c | 2002-04-01 14:25:28 +0000 | [diff] [blame] | 163 | FT_UInt numIDefs; /* number of instruction defs */ |
| 164 | FT_UInt maxIDefs; /* maximum number of ins defs */ |
| 165 | TT_DefArray IDefs; /* table of IDefs entries */ |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 166 | |
Werner Lemberg | 91db04c | 2002-04-01 14:25:28 +0000 | [diff] [blame] | 167 | FT_UInt maxFunc; /* maximum function index */ |
| 168 | FT_UInt maxIns; /* maximum instruction index */ |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 169 | |
Werner Lemberg | 91db04c | 2002-04-01 14:25:28 +0000 | [diff] [blame] | 170 | FT_Int callTop, /* top of call stack during execution */ |
| 171 | callSize; /* size of call stack */ |
| 172 | TT_CallStack callStack; /* call stack */ |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 173 | |
Werner Lemberg | 91db04c | 2002-04-01 14:25:28 +0000 | [diff] [blame] | 174 | FT_UShort maxPoints; /* capacity of this context's `pts' */ |
| 175 | FT_Short maxContours; /* record, expressed in points and */ |
| 176 | /* contours. */ |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 177 | |
| 178 | TT_CodeRangeTable codeRangeTable; /* table of valid code ranges */ |
| 179 | /* useful for the debugger */ |
| 180 | |
Werner Lemberg | 91db04c | 2002-04-01 14:25:28 +0000 | [diff] [blame] | 181 | FT_UShort storeSize; /* size of current storage */ |
| 182 | FT_Long* storage; /* storage area */ |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 183 | |
Werner Lemberg | 91db04c | 2002-04-01 14:25:28 +0000 | [diff] [blame] | 184 | FT_F26Dot6 period; /* values used for the */ |
| 185 | FT_F26Dot6 phase; /* `SuperRounding' */ |
| 186 | FT_F26Dot6 threshold; |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 187 | |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 188 | #if 0 |
Werner Lemberg | 5811c7c | 2000-07-02 13:53:16 +0000 | [diff] [blame] | 189 | /* this seems to be unused */ |
Werner Lemberg | 91db04c | 2002-04-01 14:25:28 +0000 | [diff] [blame] | 190 | FT_Int cur_ppem; /* ppem along the current proj vector */ |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 191 | #endif |
Werner Lemberg | 5811c7c | 2000-07-02 13:53:16 +0000 | [diff] [blame] | 192 | |
Werner Lemberg | 91db04c | 2002-04-01 14:25:28 +0000 | [diff] [blame] | 193 | FT_Bool instruction_trap; /* If `True', the interpreter will */ |
| 194 | /* exit after each instruction */ |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 195 | |
Werner Lemberg | 91db04c | 2002-04-01 14:25:28 +0000 | [diff] [blame] | 196 | TT_GraphicsState default_GS; /* graphics state resulting from */ |
| 197 | /* the prep program */ |
| 198 | FT_Bool is_composite; /* true if the glyph is composite */ |
| 199 | FT_Bool pedantic_hinting; /* true if pedantic interpretation */ |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 200 | |
| 201 | /* latest interpreter additions */ |
| 202 | |
David Turner | f9b8dec | 2000-06-16 19:34:52 +0000 | [diff] [blame] | 203 | FT_Long F_dot_P; /* dot product of freedom and projection */ |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 204 | /* vectors */ |
| 205 | TT_Round_Func func_round; /* current rounding function */ |
| 206 | |
| 207 | TT_Project_Func func_project, /* current projection function */ |
| 208 | func_dualproj, /* current dual proj. function */ |
| 209 | func_freeProj; /* current freedom proj. func */ |
| 210 | |
| 211 | TT_Move_Func func_move; /* current point move function */ |
Werner Lemberg | be67c4e | 2003-11-24 22:54:58 +0000 | [diff] [blame] | 212 | TT_Move_Func func_move_orig; /* move original position function */ |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 213 | |
| 214 | TT_Get_CVT_Func func_read_cvt; /* read a cvt entry */ |
| 215 | TT_Set_CVT_Func func_write_cvt; /* write a cvt entry (in pixels) */ |
| 216 | TT_Set_CVT_Func func_move_cvt; /* incr a cvt entry (in pixels) */ |
| 217 | |
Werner Lemberg | dea712b | 2004-08-07 15:08:33 +0000 | [diff] [blame] | 218 | FT_Bool grayscale; /* are we hinting for grayscale? */ |
| 219 | |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 220 | } TT_ExecContextRec; |
| 221 | |
| 222 | |
Werner Lemberg | bd5ae40 | 2000-07-05 04:32:02 +0000 | [diff] [blame] | 223 | extern const TT_GraphicsState tt_default_graphics_state; |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 224 | |
| 225 | |
David Turner | bc82f1b | 2002-03-01 02:26:22 +0000 | [diff] [blame] | 226 | FT_LOCAL( FT_Error ) |
Werner Lemberg | 4a2305c | 2001-06-28 07:17:51 +0000 | [diff] [blame] | 227 | TT_Goto_CodeRange( TT_ExecContext exec, |
| 228 | FT_Int range, |
| 229 | FT_Long IP ); |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 230 | |
David Turner | bc82f1b | 2002-03-01 02:26:22 +0000 | [diff] [blame] | 231 | FT_LOCAL( FT_Error ) |
Werner Lemberg | 4a2305c | 2001-06-28 07:17:51 +0000 | [diff] [blame] | 232 | TT_Set_CodeRange( TT_ExecContext exec, |
| 233 | FT_Int range, |
| 234 | void* base, |
| 235 | FT_Long length ); |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 236 | |
David Turner | bc82f1b | 2002-03-01 02:26:22 +0000 | [diff] [blame] | 237 | FT_LOCAL( FT_Error ) |
Werner Lemberg | 4a2305c | 2001-06-28 07:17:51 +0000 | [diff] [blame] | 238 | TT_Clear_CodeRange( TT_ExecContext exec, |
| 239 | FT_Int range ); |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 240 | |
Werner Lemberg | 90a0330 | 2000-11-07 17:21:11 +0000 | [diff] [blame] | 241 | |
Werner Lemberg | 6da023d | 2010-05-20 15:38:00 +0200 | [diff] [blame] | 242 | FT_LOCAL( FT_Error ) |
| 243 | Update_Max( FT_Memory memory, |
| 244 | FT_ULong* size, |
| 245 | FT_Long multiplier, |
| 246 | void* _pbuff, |
| 247 | FT_ULong new_max ); |
| 248 | |
| 249 | |
Werner Lemberg | 90a0330 | 2000-11-07 17:21:11 +0000 | [diff] [blame] | 250 | /*************************************************************************/ |
| 251 | /* */ |
| 252 | /* <Function> */ |
| 253 | /* TT_New_Context */ |
| 254 | /* */ |
| 255 | /* <Description> */ |
| 256 | /* Queries the face context for a given font. Note that there is */ |
| 257 | /* now a _single_ execution context in the TrueType driver which is */ |
| 258 | /* shared among faces. */ |
| 259 | /* */ |
| 260 | /* <Input> */ |
| 261 | /* face :: A handle to the source face object. */ |
| 262 | /* */ |
| 263 | /* <Return> */ |
| 264 | /* A handle to the execution context. Initialized for `face'. */ |
| 265 | /* */ |
| 266 | /* <Note> */ |
| 267 | /* Only the glyph loader and debugger should call this function. */ |
| 268 | /* */ |
Werner Lemberg | 4a2305c | 2001-06-28 07:17:51 +0000 | [diff] [blame] | 269 | FT_EXPORT( TT_ExecContext ) |
Wu, Chia-I (吳佳一) | 0142e6a | 2005-08-16 01:54:59 +0000 | [diff] [blame] | 270 | TT_New_Context( TT_Driver driver ); |
Werner Lemberg | 90a0330 | 2000-11-07 17:21:11 +0000 | [diff] [blame] | 271 | |
David Turner | bc82f1b | 2002-03-01 02:26:22 +0000 | [diff] [blame] | 272 | FT_LOCAL( FT_Error ) |
Werner Lemberg | 4a2305c | 2001-06-28 07:17:51 +0000 | [diff] [blame] | 273 | TT_Done_Context( TT_ExecContext exec ); |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 274 | |
David Turner | bc82f1b | 2002-03-01 02:26:22 +0000 | [diff] [blame] | 275 | FT_LOCAL( FT_Error ) |
Werner Lemberg | 4a2305c | 2001-06-28 07:17:51 +0000 | [diff] [blame] | 276 | TT_Load_Context( TT_ExecContext exec, |
| 277 | TT_Face face, |
| 278 | TT_Size size ); |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 279 | |
David Turner | bc82f1b | 2002-03-01 02:26:22 +0000 | [diff] [blame] | 280 | FT_LOCAL( FT_Error ) |
Werner Lemberg | 4a2305c | 2001-06-28 07:17:51 +0000 | [diff] [blame] | 281 | TT_Save_Context( TT_ExecContext exec, |
| 282 | TT_Size ins ); |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 283 | |
David Turner | bc82f1b | 2002-03-01 02:26:22 +0000 | [diff] [blame] | 284 | FT_LOCAL( FT_Error ) |
Werner Lemberg | 4a2305c | 2001-06-28 07:17:51 +0000 | [diff] [blame] | 285 | TT_Run_Context( TT_ExecContext exec, |
| 286 | FT_Bool debug ); |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 287 | |
Werner Lemberg | 90a0330 | 2000-11-07 17:21:11 +0000 | [diff] [blame] | 288 | |
| 289 | /*************************************************************************/ |
| 290 | /* */ |
| 291 | /* <Function> */ |
| 292 | /* TT_RunIns */ |
| 293 | /* */ |
| 294 | /* <Description> */ |
| 295 | /* Executes one or more instruction in the execution context. This */ |
| 296 | /* is the main function of the TrueType opcode interpreter. */ |
| 297 | /* */ |
| 298 | /* <Input> */ |
| 299 | /* exec :: A handle to the target execution context. */ |
| 300 | /* */ |
| 301 | /* <Return> */ |
| 302 | /* FreeType error code. 0 means success. */ |
| 303 | /* */ |
| 304 | /* <Note> */ |
| 305 | /* Only the object manager and debugger should call this function. */ |
| 306 | /* */ |
| 307 | /* This function is publicly exported because it is directly */ |
| 308 | /* invoked by the TrueType debugger. */ |
| 309 | /* */ |
Werner Lemberg | 4a2305c | 2001-06-28 07:17:51 +0000 | [diff] [blame] | 310 | FT_EXPORT( FT_Error ) |
| 311 | TT_RunIns( TT_ExecContext exec ); |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 312 | |
| 313 | |
David Turner | 19ed8af | 2000-12-08 02:42:29 +0000 | [diff] [blame] | 314 | FT_END_HEADER |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 315 | |
Werner Lemberg | 90d9964 | 2000-12-09 00:45:38 +0000 | [diff] [blame] | 316 | #endif /* __TTINTERP_H__ */ |
David Turner | d2b1f35 | 1999-12-16 23:11:37 +0000 | [diff] [blame] | 317 | |
| 318 | |
| 319 | /* END */ |