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ftstream.h
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1 /***************************************************************************/
2 /* */
3 /* ftstream.h */
4 /* */
5 /* Stream handling (specification). */
6 /* */
7 /* Copyright 1996-2002, 2004-2006, 2011 by */
8 /* David Turner, Robert Wilhelm, and Werner Lemberg. */
9 /* */
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 */
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 
19 #ifndef __FTSTREAM_H__
20 #define __FTSTREAM_H__
21 
22 
23 #include <ft2build.h>
24 #include FT_SYSTEM_H
25 #include FT_INTERNAL_OBJECTS_H
26 
27 
28 FT_BEGIN_HEADER
29 
30 
31  /* format of an 8-bit frame_op value: */
32  /* */
33  /* bit 76543210 */
34  /* xxxxxxes */
35  /* */
36  /* s is set to 1 if the value is signed. */
37  /* e is set to 1 if the value is little-endian. */
38  /* xxx is a command. */
39 
40 #define FT_FRAME_OP_SHIFT 2
41 #define FT_FRAME_OP_SIGNED 1
42 #define FT_FRAME_OP_LITTLE 2
43 #define FT_FRAME_OP_COMMAND( x ) ( x >> FT_FRAME_OP_SHIFT )
44 
45 #define FT_MAKE_FRAME_OP( command, little, sign ) \
46  ( ( command << FT_FRAME_OP_SHIFT ) | ( little << 1 ) | sign )
47 
48 #define FT_FRAME_OP_END 0
49 #define FT_FRAME_OP_START 1 /* start a new frame */
50 #define FT_FRAME_OP_BYTE 2 /* read 1-byte value */
51 #define FT_FRAME_OP_SHORT 3 /* read 2-byte value */
52 #define FT_FRAME_OP_LONG 4 /* read 4-byte value */
53 #define FT_FRAME_OP_OFF3 5 /* read 3-byte value */
54 #define FT_FRAME_OP_BYTES 6 /* read a bytes sequence */
55 
56 
57  typedef enum FT_Frame_Op_
58  {
59  ft_frame_end = 0,
60  ft_frame_start = FT_MAKE_FRAME_OP( FT_FRAME_OP_START, 0, 0 ),
61 
62  ft_frame_byte = FT_MAKE_FRAME_OP( FT_FRAME_OP_BYTE, 0, 0 ),
63  ft_frame_schar = FT_MAKE_FRAME_OP( FT_FRAME_OP_BYTE, 0, 1 ),
64 
65  ft_frame_ushort_be = FT_MAKE_FRAME_OP( FT_FRAME_OP_SHORT, 0, 0 ),
66  ft_frame_short_be = FT_MAKE_FRAME_OP( FT_FRAME_OP_SHORT, 0, 1 ),
67  ft_frame_ushort_le = FT_MAKE_FRAME_OP( FT_FRAME_OP_SHORT, 1, 0 ),
68  ft_frame_short_le = FT_MAKE_FRAME_OP( FT_FRAME_OP_SHORT, 1, 1 ),
69 
70  ft_frame_ulong_be = FT_MAKE_FRAME_OP( FT_FRAME_OP_LONG, 0, 0 ),
71  ft_frame_long_be = FT_MAKE_FRAME_OP( FT_FRAME_OP_LONG, 0, 1 ),
72  ft_frame_ulong_le = FT_MAKE_FRAME_OP( FT_FRAME_OP_LONG, 1, 0 ),
73  ft_frame_long_le = FT_MAKE_FRAME_OP( FT_FRAME_OP_LONG, 1, 1 ),
74 
75  ft_frame_uoff3_be = FT_MAKE_FRAME_OP( FT_FRAME_OP_OFF3, 0, 0 ),
76  ft_frame_off3_be = FT_MAKE_FRAME_OP( FT_FRAME_OP_OFF3, 0, 1 ),
77  ft_frame_uoff3_le = FT_MAKE_FRAME_OP( FT_FRAME_OP_OFF3, 1, 0 ),
78  ft_frame_off3_le = FT_MAKE_FRAME_OP( FT_FRAME_OP_OFF3, 1, 1 ),
79 
80  ft_frame_bytes = FT_MAKE_FRAME_OP( FT_FRAME_OP_BYTES, 0, 0 ),
81  ft_frame_skip = FT_MAKE_FRAME_OP( FT_FRAME_OP_BYTES, 0, 1 )
82 
83  } FT_Frame_Op;
84 
85 
86  typedef struct FT_Frame_Field_
87  {
88  FT_Byte value;
89  FT_Byte size;
90  FT_UShort offset;
91 
92  } FT_Frame_Field;
93 
94 
95  /* Construct an FT_Frame_Field out of a structure type and a field name. */
96  /* The structure type must be set in the FT_STRUCTURE macro before */
97  /* calling the FT_FRAME_START() macro. */
98  /* */
99 #define FT_FIELD_SIZE( f ) \
100  (FT_Byte)sizeof ( ((FT_STRUCTURE*)0)->f )
101 
102 #define FT_FIELD_SIZE_DELTA( f ) \
103  (FT_Byte)sizeof ( ((FT_STRUCTURE*)0)->f[0] )
104 
105 #define FT_FIELD_OFFSET( f ) \
106  (FT_UShort)( offsetof( FT_STRUCTURE, f ) )
107 
108 #define FT_FRAME_FIELD( frame_op, field ) \
109  { \
110  frame_op, \
111  FT_FIELD_SIZE( field ), \
112  FT_FIELD_OFFSET( field ) \
113  }
114 
115 #define FT_MAKE_EMPTY_FIELD( frame_op ) { frame_op, 0, 0 }
116 
117 #define FT_FRAME_START( size ) { ft_frame_start, 0, size }
118 #define FT_FRAME_END { ft_frame_end, 0, 0 }
119 
120 #define FT_FRAME_LONG( f ) FT_FRAME_FIELD( ft_frame_long_be, f )
121 #define FT_FRAME_ULONG( f ) FT_FRAME_FIELD( ft_frame_ulong_be, f )
122 #define FT_FRAME_SHORT( f ) FT_FRAME_FIELD( ft_frame_short_be, f )
123 #define FT_FRAME_USHORT( f ) FT_FRAME_FIELD( ft_frame_ushort_be, f )
124 #define FT_FRAME_OFF3( f ) FT_FRAME_FIELD( ft_frame_off3_be, f )
125 #define FT_FRAME_UOFF3( f ) FT_FRAME_FIELD( ft_frame_uoff3_be, f )
126 #define FT_FRAME_BYTE( f ) FT_FRAME_FIELD( ft_frame_byte, f )
127 #define FT_FRAME_CHAR( f ) FT_FRAME_FIELD( ft_frame_schar, f )
128 
129 #define FT_FRAME_LONG_LE( f ) FT_FRAME_FIELD( ft_frame_long_le, f )
130 #define FT_FRAME_ULONG_LE( f ) FT_FRAME_FIELD( ft_frame_ulong_le, f )
131 #define FT_FRAME_SHORT_LE( f ) FT_FRAME_FIELD( ft_frame_short_le, f )
132 #define FT_FRAME_USHORT_LE( f ) FT_FRAME_FIELD( ft_frame_ushort_le, f )
133 #define FT_FRAME_OFF3_LE( f ) FT_FRAME_FIELD( ft_frame_off3_le, f )
134 #define FT_FRAME_UOFF3_LE( f ) FT_FRAME_FIELD( ft_frame_uoff3_le, f )
135 
136 #define FT_FRAME_SKIP_LONG { ft_frame_long_be, 0, 0 }
137 #define FT_FRAME_SKIP_SHORT { ft_frame_short_be, 0, 0 }
138 #define FT_FRAME_SKIP_BYTE { ft_frame_byte, 0, 0 }
139 
140 #define FT_FRAME_BYTES( field, count ) \
141  { \
142  ft_frame_bytes, \
143  count, \
144  FT_FIELD_OFFSET( field ) \
145  }
146 
147 #define FT_FRAME_SKIP_BYTES( count ) { ft_frame_skip, count, 0 }
148 
149 
150  /*************************************************************************/
151  /* */
152  /* Integer extraction macros -- the `buffer' parameter must ALWAYS be of */
153  /* type `char*' or equivalent (1-byte elements). */
154  /* */
155 
156 #define FT_BYTE_( p, i ) ( ((const FT_Byte*)(p))[(i)] )
157 #define FT_INT8_( p, i ) ( ((const FT_Char*)(p))[(i)] )
158 
159 #define FT_INT16( x ) ( (FT_Int16)(x) )
160 #define FT_UINT16( x ) ( (FT_UInt16)(x) )
161 #define FT_INT32( x ) ( (FT_Int32)(x) )
162 #define FT_UINT32( x ) ( (FT_UInt32)(x) )
163 
164 #define FT_BYTE_I16( p, i, s ) ( FT_INT16( FT_BYTE_( p, i ) ) << (s) )
165 #define FT_BYTE_U16( p, i, s ) ( FT_UINT16( FT_BYTE_( p, i ) ) << (s) )
166 #define FT_BYTE_I32( p, i, s ) ( FT_INT32( FT_BYTE_( p, i ) ) << (s) )
167 #define FT_BYTE_U32( p, i, s ) ( FT_UINT32( FT_BYTE_( p, i ) ) << (s) )
168 
169 #define FT_INT8_I16( p, i, s ) ( FT_INT16( FT_INT8_( p, i ) ) << (s) )
170 #define FT_INT8_U16( p, i, s ) ( FT_UINT16( FT_INT8_( p, i ) ) << (s) )
171 #define FT_INT8_I32( p, i, s ) ( FT_INT32( FT_INT8_( p, i ) ) << (s) )
172 #define FT_INT8_U32( p, i, s ) ( FT_UINT32( FT_INT8_( p, i ) ) << (s) )
173 
174 
175 #define FT_PEEK_SHORT( p ) FT_INT16( FT_INT8_I16( p, 0, 8) | \
176  FT_BYTE_I16( p, 1, 0) )
177 
178 #define FT_PEEK_USHORT( p ) FT_UINT16( FT_BYTE_U16( p, 0, 8 ) | \
179  FT_BYTE_U16( p, 1, 0 ) )
180 
181 #define FT_PEEK_LONG( p ) FT_INT32( FT_INT8_I32( p, 0, 24 ) | \
182  FT_BYTE_I32( p, 1, 16 ) | \
183  FT_BYTE_I32( p, 2, 8 ) | \
184  FT_BYTE_I32( p, 3, 0 ) )
185 
186 #define FT_PEEK_ULONG( p ) FT_UINT32( FT_BYTE_U32( p, 0, 24 ) | \
187  FT_BYTE_U32( p, 1, 16 ) | \
188  FT_BYTE_U32( p, 2, 8 ) | \
189  FT_BYTE_U32( p, 3, 0 ) )
190 
191 #define FT_PEEK_OFF3( p ) FT_INT32( FT_INT8_I32( p, 0, 16 ) | \
192  FT_BYTE_I32( p, 1, 8 ) | \
193  FT_BYTE_I32( p, 2, 0 ) )
194 
195 #define FT_PEEK_UOFF3( p ) FT_UINT32( FT_BYTE_U32( p, 0, 16 ) | \
196  FT_BYTE_U32( p, 1, 8 ) | \
197  FT_BYTE_U32( p, 2, 0 ) )
198 
199 #define FT_PEEK_SHORT_LE( p ) FT_INT16( FT_INT8_I16( p, 1, 8 ) | \
200  FT_BYTE_I16( p, 0, 0 ) )
201 
202 #define FT_PEEK_USHORT_LE( p ) FT_UINT16( FT_BYTE_U16( p, 1, 8 ) | \
203  FT_BYTE_U16( p, 0, 0 ) )
204 
205 #define FT_PEEK_LONG_LE( p ) FT_INT32( FT_INT8_I32( p, 3, 24 ) | \
206  FT_BYTE_I32( p, 2, 16 ) | \
207  FT_BYTE_I32( p, 1, 8 ) | \
208  FT_BYTE_I32( p, 0, 0 ) )
209 
210 #define FT_PEEK_ULONG_LE( p ) FT_UINT32( FT_BYTE_U32( p, 3, 24 ) | \
211  FT_BYTE_U32( p, 2, 16 ) | \
212  FT_BYTE_U32( p, 1, 8 ) | \
213  FT_BYTE_U32( p, 0, 0 ) )
214 
215 #define FT_PEEK_OFF3_LE( p ) FT_INT32( FT_INT8_I32( p, 2, 16 ) | \
216  FT_BYTE_I32( p, 1, 8 ) | \
217  FT_BYTE_I32( p, 0, 0 ) )
218 
219 #define FT_PEEK_UOFF3_LE( p ) FT_UINT32( FT_BYTE_U32( p, 2, 16 ) | \
220  FT_BYTE_U32( p, 1, 8 ) | \
221  FT_BYTE_U32( p, 0, 0 ) )
222 
223 
224 #define FT_NEXT_CHAR( buffer ) \
225  ( (signed char)*buffer++ )
226 
227 #define FT_NEXT_BYTE( buffer ) \
228  ( (unsigned char)*buffer++ )
229 
230 #define FT_NEXT_SHORT( buffer ) \
231  ( (short)( buffer += 2, FT_PEEK_SHORT( buffer - 2 ) ) )
232 
233 #define FT_NEXT_USHORT( buffer ) \
234  ( (unsigned short)( buffer += 2, FT_PEEK_USHORT( buffer - 2 ) ) )
235 
236 #define FT_NEXT_OFF3( buffer ) \
237  ( (long)( buffer += 3, FT_PEEK_OFF3( buffer - 3 ) ) )
238 
239 #define FT_NEXT_UOFF3( buffer ) \
240  ( (unsigned long)( buffer += 3, FT_PEEK_UOFF3( buffer - 3 ) ) )
241 
242 #define FT_NEXT_LONG( buffer ) \
243  ( (long)( buffer += 4, FT_PEEK_LONG( buffer - 4 ) ) )
244 
245 #define FT_NEXT_ULONG( buffer ) \
246  ( (unsigned long)( buffer += 4, FT_PEEK_ULONG( buffer - 4 ) ) )
247 
248 
249 #define FT_NEXT_SHORT_LE( buffer ) \
250  ( (short)( buffer += 2, FT_PEEK_SHORT_LE( buffer - 2 ) ) )
251 
252 #define FT_NEXT_USHORT_LE( buffer ) \
253  ( (unsigned short)( buffer += 2, FT_PEEK_USHORT_LE( buffer - 2 ) ) )
254 
255 #define FT_NEXT_OFF3_LE( buffer ) \
256  ( (long)( buffer += 3, FT_PEEK_OFF3_LE( buffer - 3 ) ) )
257 
258 #define FT_NEXT_UOFF3_LE( buffer ) \
259  ( (unsigned long)( buffer += 3, FT_PEEK_UOFF3_LE( buffer - 3 ) ) )
260 
261 #define FT_NEXT_LONG_LE( buffer ) \
262  ( (long)( buffer += 4, FT_PEEK_LONG_LE( buffer - 4 ) ) )
263 
264 #define FT_NEXT_ULONG_LE( buffer ) \
265  ( (unsigned long)( buffer += 4, FT_PEEK_ULONG_LE( buffer - 4 ) ) )
266 
267 
268  /*************************************************************************/
269  /* */
270  /* Each GET_xxxx() macro uses an implicit `stream' variable. */
271  /* */
272 #if 0
273 #define FT_GET_MACRO( type ) FT_NEXT_ ## type ( stream->cursor )
274 
275 #define FT_GET_CHAR() FT_GET_MACRO( CHAR )
276 #define FT_GET_BYTE() FT_GET_MACRO( BYTE )
277 #define FT_GET_SHORT() FT_GET_MACRO( SHORT )
278 #define FT_GET_USHORT() FT_GET_MACRO( USHORT )
279 #define FT_GET_OFF3() FT_GET_MACRO( OFF3 )
280 #define FT_GET_UOFF3() FT_GET_MACRO( UOFF3 )
281 #define FT_GET_LONG() FT_GET_MACRO( LONG )
282 #define FT_GET_ULONG() FT_GET_MACRO( ULONG )
283 #define FT_GET_TAG4() FT_GET_MACRO( ULONG )
284 
285 #define FT_GET_SHORT_LE() FT_GET_MACRO( SHORT_LE )
286 #define FT_GET_USHORT_LE() FT_GET_MACRO( USHORT_LE )
287 #define FT_GET_LONG_LE() FT_GET_MACRO( LONG_LE )
288 #define FT_GET_ULONG_LE() FT_GET_MACRO( ULONG_LE )
289 
290 #else
291 #define FT_GET_MACRO( func, type ) ( (type)func( stream ) )
292 
293 #define FT_GET_CHAR() FT_GET_MACRO( FT_Stream_GetChar, FT_Char )
294 #define FT_GET_BYTE() FT_GET_MACRO( FT_Stream_GetChar, FT_Byte )
295 #define FT_GET_SHORT() FT_GET_MACRO( FT_Stream_GetUShort, FT_Short )
296 #define FT_GET_USHORT() FT_GET_MACRO( FT_Stream_GetUShort, FT_UShort )
297 #define FT_GET_OFF3() FT_GET_MACRO( FT_Stream_GetUOffset, FT_Long )
298 #define FT_GET_UOFF3() FT_GET_MACRO( FT_Stream_GetUOffset, FT_ULong )
299 #define FT_GET_LONG() FT_GET_MACRO( FT_Stream_GetULong, FT_Long )
300 #define FT_GET_ULONG() FT_GET_MACRO( FT_Stream_GetULong, FT_ULong )
301 #define FT_GET_TAG4() FT_GET_MACRO( FT_Stream_GetULong, FT_ULong )
302 
303 #define FT_GET_SHORT_LE() FT_GET_MACRO( FT_Stream_GetUShortLE, FT_Short )
304 #define FT_GET_USHORT_LE() FT_GET_MACRO( FT_Stream_GetUShortLE, FT_UShort )
305 #define FT_GET_LONG_LE() FT_GET_MACRO( FT_Stream_GetULongLE, FT_Long )
306 #define FT_GET_ULONG_LE() FT_GET_MACRO( FT_Stream_GetULongLE, FT_ULong )
307 #endif
308 
309 #define FT_READ_MACRO( func, type, var ) \
310  ( var = (type)func( stream, &error ), \
311  error != FT_Err_Ok )
312 
313 #define FT_READ_BYTE( var ) FT_READ_MACRO( FT_Stream_ReadChar, FT_Byte, var )
314 #define FT_READ_CHAR( var ) FT_READ_MACRO( FT_Stream_ReadChar, FT_Char, var )
315 #define FT_READ_SHORT( var ) FT_READ_MACRO( FT_Stream_ReadUShort, FT_Short, var )
316 #define FT_READ_USHORT( var ) FT_READ_MACRO( FT_Stream_ReadUShort, FT_UShort, var )
317 #define FT_READ_OFF3( var ) FT_READ_MACRO( FT_Stream_ReadUOffset, FT_Long, var )
318 #define FT_READ_UOFF3( var ) FT_READ_MACRO( FT_Stream_ReadUOffset, FT_ULong, var )
319 #define FT_READ_LONG( var ) FT_READ_MACRO( FT_Stream_ReadULong, FT_Long, var )
320 #define FT_READ_ULONG( var ) FT_READ_MACRO( FT_Stream_ReadULong, FT_ULong, var )
321 
322 #define FT_READ_SHORT_LE( var ) FT_READ_MACRO( FT_Stream_ReadUShortLE, FT_Short, var )
323 #define FT_READ_USHORT_LE( var ) FT_READ_MACRO( FT_Stream_ReadUShortLE, FT_UShort, var )
324 #define FT_READ_LONG_LE( var ) FT_READ_MACRO( FT_Stream_ReadULongLE, FT_Long, var )
325 #define FT_READ_ULONG_LE( var ) FT_READ_MACRO( FT_Stream_ReadULongLE, FT_ULong, var )
326 
327 
328 #ifndef FT_CONFIG_OPTION_NO_DEFAULT_SYSTEM
329 
330  /* initialize a stream for reading a regular system stream */
331  FT_BASE( FT_Error )
332  FT_Stream_Open( FT_Stream stream,
333  const char* filepathname );
334 
335 #endif /* FT_CONFIG_OPTION_NO_DEFAULT_SYSTEM */
336 
337 
338  /* create a new (input) stream from an FT_Open_Args structure */
339  FT_BASE( FT_Error )
340  FT_Stream_New( FT_Library library,
341  const FT_Open_Args* args,
342  FT_Stream *astream );
343 
344  /* free a stream */
345  FT_BASE( void )
346  FT_Stream_Free( FT_Stream stream,
347  FT_Int external );
348 
349  /* initialize a stream for reading in-memory data */
350  FT_BASE( void )
351  FT_Stream_OpenMemory( FT_Stream stream,
352  const FT_Byte* base,
353  FT_ULong size );
354 
355  /* close a stream (does not destroy the stream structure) */
356  FT_BASE( void )
357  FT_Stream_Close( FT_Stream stream );
358 
359 
360  /* seek within a stream. position is relative to start of stream */
361  FT_BASE( FT_Error )
362  FT_Stream_Seek( FT_Stream stream,
363  FT_ULong pos );
364 
365  /* skip bytes in a stream */
366  FT_BASE( FT_Error )
367  FT_Stream_Skip( FT_Stream stream,
368  FT_Long distance );
369 
370  /* return current stream position */
371  FT_BASE( FT_Long )
372  FT_Stream_Pos( FT_Stream stream );
373 
374  /* read bytes from a stream into a user-allocated buffer, returns an */
375  /* error if not all bytes could be read. */
376  FT_BASE( FT_Error )
377  FT_Stream_Read( FT_Stream stream,
378  FT_Byte* buffer,
379  FT_ULong count );
380 
381  /* read bytes from a stream at a given position */
382  FT_BASE( FT_Error )
383  FT_Stream_ReadAt( FT_Stream stream,
384  FT_ULong pos,
385  FT_Byte* buffer,
386  FT_ULong count );
387 
388  /* try to read bytes at the end of a stream; return number of bytes */
389  /* really available */
390  FT_BASE( FT_ULong )
391  FT_Stream_TryRead( FT_Stream stream,
392  FT_Byte* buffer,
393  FT_ULong count );
394 
395  /* Enter a frame of `count' consecutive bytes in a stream. Returns an */
396  /* error if the frame could not be read/accessed. The caller can use */
397  /* the FT_Stream_Get_XXX functions to retrieve frame data without */
398  /* error checks. */
399  /* */
400  /* You must _always_ call FT_Stream_ExitFrame() once you have entered */
401  /* a stream frame! */
402  /* */
403  FT_BASE( FT_Error )
404  FT_Stream_EnterFrame( FT_Stream stream,
405  FT_ULong count );
406 
407  /* exit a stream frame */
408  FT_BASE( void )
409  FT_Stream_ExitFrame( FT_Stream stream );
410 
411  /* Extract a stream frame. If the stream is disk-based, a heap block */
412  /* is allocated and the frame bytes are read into it. If the stream */
413  /* is memory-based, this function simply set a pointer to the data. */
414  /* */
415  /* Useful to optimize access to memory-based streams transparently. */
416  /* */
417  /* All extracted frames must be `freed' with a call to the function */
418  /* FT_Stream_ReleaseFrame(). */
419  /* */
420  FT_BASE( FT_Error )
421  FT_Stream_ExtractFrame( FT_Stream stream,
422  FT_ULong count,
423  FT_Byte** pbytes );
424 
425  /* release an extract frame (see FT_Stream_ExtractFrame) */
426  FT_BASE( void )
427  FT_Stream_ReleaseFrame( FT_Stream stream,
428  FT_Byte** pbytes );
429 
430  /* read a byte from an entered frame */
431  FT_BASE( FT_Char )
432  FT_Stream_GetChar( FT_Stream stream );
433 
434  /* read a 16-bit big-endian unsigned integer from an entered frame */
435  FT_BASE( FT_UShort )
436  FT_Stream_GetUShort( FT_Stream stream );
437 
438  /* read a 24-bit big-endian unsigned integer from an entered frame */
439  FT_BASE( FT_ULong )
440  FT_Stream_GetUOffset( FT_Stream stream );
441 
442  /* read a 32-bit big-endian unsigned integer from an entered frame */
443  FT_BASE( FT_ULong )
444  FT_Stream_GetULong( FT_Stream stream );
445 
446  /* read a 16-bit little-endian unsigned integer from an entered frame */
447  FT_BASE( FT_UShort )
448  FT_Stream_GetUShortLE( FT_Stream stream );
449 
450  /* read a 32-bit little-endian unsigned integer from an entered frame */
451  FT_BASE( FT_ULong )
452  FT_Stream_GetULongLE( FT_Stream stream );
453 
454 
455  /* read a byte from a stream */
456  FT_BASE( FT_Char )
457  FT_Stream_ReadChar( FT_Stream stream,
458  FT_Error* error );
459 
460  /* read a 16-bit big-endian unsigned integer from a stream */
461  FT_BASE( FT_UShort )
462  FT_Stream_ReadUShort( FT_Stream stream,
463  FT_Error* error );
464 
465  /* read a 24-bit big-endian unsigned integer from a stream */
466  FT_BASE( FT_ULong )
467  FT_Stream_ReadUOffset( FT_Stream stream,
468  FT_Error* error );
469 
470  /* read a 32-bit big-endian integer from a stream */
471  FT_BASE( FT_ULong )
472  FT_Stream_ReadULong( FT_Stream stream,
473  FT_Error* error );
474 
475  /* read a 16-bit little-endian unsigned integer from a stream */
476  FT_BASE( FT_UShort )
477  FT_Stream_ReadUShortLE( FT_Stream stream,
478  FT_Error* error );
479 
480  /* read a 32-bit little-endian unsigned integer from a stream */
481  FT_BASE( FT_ULong )
482  FT_Stream_ReadULongLE( FT_Stream stream,
483  FT_Error* error );
484 
485  /* Read a structure from a stream. The structure must be described */
486  /* by an array of FT_Frame_Field records. */
487  FT_BASE( FT_Error )
488  FT_Stream_ReadFields( FT_Stream stream,
489  const FT_Frame_Field* fields,
490  void* structure );
491 
492 
493 #define FT_STREAM_POS() \
494  FT_Stream_Pos( stream )
495 
496 #define FT_STREAM_SEEK( position ) \
497  FT_SET_ERROR( FT_Stream_Seek( stream, position ) )
498 
499 #define FT_STREAM_SKIP( distance ) \
500  FT_SET_ERROR( FT_Stream_Skip( stream, distance ) )
501 
502 #define FT_STREAM_READ( buffer, count ) \
503  FT_SET_ERROR( FT_Stream_Read( stream, \
504  (FT_Byte*)buffer, \
505  count ) )
506 
507 #define FT_STREAM_READ_AT( position, buffer, count ) \
508  FT_SET_ERROR( FT_Stream_ReadAt( stream, \
509  position, \
510  (FT_Byte*)buffer, \
511  count ) )
512 
513 #define FT_STREAM_READ_FIELDS( fields, object ) \
514  FT_SET_ERROR( FT_Stream_ReadFields( stream, fields, object ) )
515 
516 
517 #define FT_FRAME_ENTER( size ) \
518  FT_SET_ERROR( \
519  FT_DEBUG_INNER( FT_Stream_EnterFrame( stream, size ) ) )
520 
521 #define FT_FRAME_EXIT() \
522  FT_DEBUG_INNER( FT_Stream_ExitFrame( stream ) )
523 
524 #define FT_FRAME_EXTRACT( size, bytes ) \
525  FT_SET_ERROR( \
526  FT_DEBUG_INNER( FT_Stream_ExtractFrame( stream, size, \
527  (FT_Byte**)&(bytes) ) ) )
528 
529 #define FT_FRAME_RELEASE( bytes ) \
530  FT_DEBUG_INNER( FT_Stream_ReleaseFrame( stream, \
531  (FT_Byte**)&(bytes) ) )
532 
533 
534 FT_END_HEADER
535 
536 #endif /* __FTSTREAM_H__ */
537 
538 
539 /* END */
FT_Frame_Field_::size
FT_Byte size
Definition: ftstream.h:89
FT_Stream_GetULongLE
FT_Stream_GetULongLE(FT_Stream stream)
Definition: ftstream.c:432
FT_Error
int FT_Error
Definition: fttypes.h:296
FT_Stream_EnterFrame
FT_Stream_EnterFrame(FT_Stream stream, FT_ULong count)
Definition: ftstream.c:234
FT_MAKE_FRAME_OP
#define FT_MAKE_FRAME_OP(command, little, sign)
Definition: ftstream.h:45
FT_Long
signed long FT_Long
Definition: fttypes.h:238
FT_Stream_Seek
FT_Stream_Seek(FT_Stream stream, FT_ULong pos)
Definition: ftstream.c:57
FT_ULong
unsigned long FT_ULong
Definition: fttypes.h:249
FT_END_HEADER
#define FT_END_HEADER
Definition: ftheader.h:54
FT_Frame_Op_
FT_Frame_Op_
Definition: ftstream.h:57
FT_Int
signed int FT_Int
Definition: fttypes.h:216
FT_Frame_Field_
Definition: ftstream.h:86
FT_Stream_ReadUShort
FT_Stream_ReadUShort(FT_Stream stream, FT_Error *error)
Definition: ftstream.c:487
FT_Stream_TryRead
FT_Stream_TryRead(FT_Stream stream, FT_Byte *buffer, FT_ULong count)
Definition: ftstream.c:164
stream
GLuint GLuint stream
Definition: glew.h:6573
FT_FRAME_OP_LONG
#define FT_FRAME_OP_LONG
Definition: ftstream.h:52
FT_Frame_Field_::offset
FT_UShort offset
Definition: ftstream.h:90
FT_Stream_GetChar
FT_Stream_GetChar(FT_Stream stream)
Definition: ftstream.c:342
FT_Char
signed char FT_Char
Definition: fttypes.h:139
FT_Stream_Pos
FT_Stream_Pos(FT_Stream stream)
Definition: ftstream.c:103
FT_Frame_Op
enum FT_Frame_Op_ FT_Frame_Op
library
FT_Library library
Definition: cffdrivr.c:409
FT_FRAME_OP_BYTES
#define FT_FRAME_OP_BYTES
Definition: ftstream.h:54
FT_Stream_Close
FT_Stream_Close(FT_Stream stream)
Definition: ftstream.c:49
FT_Stream_GetUShortLE
FT_Stream_GetUShortLE(FT_Stream stream)
Definition: ftstream.c:377
FT_FRAME_OP_OFF3
#define FT_FRAME_OP_OFF3
Definition: ftstream.h:53
FT_Frame_Field
struct FT_Frame_Field_ FT_Frame_Field
FT_Stream_ReadUShortLE
FT_Stream_ReadUShortLE(FT_Stream stream, FT_Error *error)
Definition: ftstream.c:534
FT_Stream_GetUShort
FT_Stream_GetUShort(FT_Stream stream)
Definition: ftstream.c:358
FT_Byte
unsigned char FT_Byte
Definition: fttypes.h:150
FT_BEGIN_HEADER
#define FT_BEGIN_HEADER
Definition: ftheader.h:36
FT_FRAME_OP_SHORT
#define FT_FRAME_OP_SHORT
Definition: ftstream.h:51
buffer
EGLContext EGLenum EGLClientBuffer buffer
Definition: eglext.h:87
FT_Stream_ReadUOffset
FT_Stream_ReadUOffset(FT_Stream stream, FT_Error *error)
Definition: ftstream.c:581
FT_Open_Args_
Definition: freetype.h:1829
FT_Stream_ReadAt
FT_Stream_ReadAt(FT_Stream stream, FT_ULong pos, FT_Byte *buffer, FT_ULong count)
Definition: ftstream.c:119
FT_Stream_Read
FT_Stream_Read(FT_Stream stream, FT_Byte *buffer, FT_ULong count)
Definition: ftstream.c:110
FT_Stream_ExtractFrame
FT_Stream_ExtractFrame(FT_Stream stream, FT_ULong count, FT_Byte **pbytes)
Definition: ftstream.c:193
error
FT_Error error
Definition: cffdrivr.c:407
FT_Frame_Field_::value
FT_Byte value
Definition: ftstream.h:88
count
GLint GLsizei count
Definition: gl2ext.h:1011
FT_Stream_ReadULong
FT_Stream_ReadULong(FT_Stream stream, FT_Error *error)
Definition: ftstream.c:628
FT_Stream_GetULong
FT_Stream_GetULong(FT_Stream stream)
Definition: ftstream.c:414
FT_FRAME_OP_BYTE
#define FT_FRAME_OP_BYTE
Definition: ftstream.h:50
FT_Stream_ReleaseFrame
FT_Stream_ReleaseFrame(FT_Stream stream, FT_Byte **pbytes)
Definition: ftstream.c:215
distance
GLsizei GLsizei GLfloat distance
Definition: glew.h:12423
FT_LibraryRec_
Definition: ftobjs.h:824
FT_Stream_New
FT_Stream_New(FT_Library library, const FT_Open_Args *args, FT_Stream *astream)
Definition: ftobjs.c:127
const
#define const
Definition: zconf.h:91
FT_Stream_Free
FT_Stream_Free(FT_Stream stream, FT_Int external)
Definition: ftobjs.c:195
FT_Stream_Open
FT_Stream_Open(FT_Stream stream, const char *filepathname)
Definition: ftsystem.c:224
FT_Stream_ExitFrame
FT_Stream_ExitFrame(FT_Stream stream)
Definition: ftstream.c:312
FT_Stream_OpenMemory
FT_Stream_OpenMemory(FT_Stream stream, const FT_Byte *base, FT_ULong size)
Definition: ftstream.c:35
FT_FRAME_OP_START
#define FT_FRAME_OP_START
Definition: ftstream.h:49
FT_Stream_Skip
FT_Stream_Skip(FT_Stream stream, FT_Long distance)
Definition: ftstream.c:92
FT_Stream_ReadULongLE
FT_Stream_ReadULongLE(FT_Stream stream, FT_Error *error)
Definition: ftstream.c:675
FT_BASE
#define FT_BASE(x)
Definition: ftconfig.h:478
FT_UShort
unsigned short FT_UShort
Definition: fttypes.h:205
FT_StreamRec_
Definition: ftsystem.h:321
FT_Stream_ReadChar
FT_Stream_ReadChar(FT_Stream stream, FT_Error *error)
Definition: ftstream.c:450
FT_Stream_GetUOffset
FT_Stream_GetUOffset(FT_Stream stream)
Definition: ftstream.c:396
FT_Stream_ReadFields
FT_Stream_ReadFields(FT_Stream stream, const FT_Frame_Field *fields, void *structure)
Definition: ftstream.c:722
size
GLsizei size
Definition: gl2ext.h:1467