1 /* Spa
2 *
3 * Copyright © 2018 Wim Taymans
4 *
5 * Permission is hereby granted, free of charge, to any person obtaining a
6 * copy of this software and associated documentation files (the "Software"),
7 * to deal in the Software without restriction, including without limitation
8 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
9 * and/or sell copies of the Software, and to permit persons to whom the
10 * Software is furnished to do so, subject to the following conditions:
11 *
12 * The above copyright notice and this permission notice (including the next
13 * paragraph) shall be included in all copies or substantial portions of the
14 * Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
21 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
22 * DEALINGS IN THE SOFTWARE.
23 */
24
25 #ifndef SPA_POD_PARSER_H
26 #define SPA_POD_PARSER_H
27
28 #ifdef __cplusplus
29 extern "C" {
30 #endif
31
32 #include <errno.h>
33 #include <stdarg.h>
34
35 #include <spa/pod/iter.h>
36 #include <spa/pod/vararg.h>
37
38 /**
39 * \addtogroup spa_pod
40 * \{
41 */
42
43 struct spa_pod_parser_state {
44 uint32_t offset;
45 uint32_t flags;
46 struct spa_pod_frame *frame;
47 };
48
49 struct spa_pod_parser {
50 const void *data;
51 uint32_t size;
52 uint32_t _padding;
53 struct spa_pod_parser_state state;
54 };
55
56 #define SPA_POD_PARSER_INIT(buffer,size) (struct spa_pod_parser){ buffer, size, 0, {} }
57
spa_pod_parser_init(struct spa_pod_parser * parser,const void * data,uint32_t size)58 static inline void spa_pod_parser_init(struct spa_pod_parser *parser,
59 const void *data, uint32_t size)
60 {
61 *parser = SPA_POD_PARSER_INIT(data, size);
62 }
63
spa_pod_parser_pod(struct spa_pod_parser * parser,const struct spa_pod * pod)64 static inline void spa_pod_parser_pod(struct spa_pod_parser *parser,
65 const struct spa_pod *pod)
66 {
67 spa_pod_parser_init(parser, pod, SPA_POD_SIZE(pod));
68 }
69
70 static inline void
spa_pod_parser_get_state(struct spa_pod_parser * parser,struct spa_pod_parser_state * state)71 spa_pod_parser_get_state(struct spa_pod_parser *parser, struct spa_pod_parser_state *state)
72 {
73 *state = parser->state;
74 }
75
76 static inline void
spa_pod_parser_reset(struct spa_pod_parser * parser,struct spa_pod_parser_state * state)77 spa_pod_parser_reset(struct spa_pod_parser *parser, struct spa_pod_parser_state *state)
78 {
79 parser->state = *state;
80 }
81
82 static inline struct spa_pod *
spa_pod_parser_deref(struct spa_pod_parser * parser,uint32_t offset,uint32_t size)83 spa_pod_parser_deref(struct spa_pod_parser *parser, uint32_t offset, uint32_t size)
84 {
85 if (offset + 8 <= size) {
86 struct spa_pod *pod = SPA_PTROFF(parser->data, offset, struct spa_pod);
87 if (offset + SPA_POD_SIZE(pod) <= size)
88 return pod;
89 }
90 return NULL;
91 }
92
spa_pod_parser_frame(struct spa_pod_parser * parser,struct spa_pod_frame * frame)93 static inline struct spa_pod *spa_pod_parser_frame(struct spa_pod_parser *parser, struct spa_pod_frame *frame)
94 {
95 return SPA_PTROFF(parser->data, frame->offset, struct spa_pod);
96 }
97
spa_pod_parser_push(struct spa_pod_parser * parser,struct spa_pod_frame * frame,const struct spa_pod * pod,uint32_t offset)98 static inline void spa_pod_parser_push(struct spa_pod_parser *parser,
99 struct spa_pod_frame *frame, const struct spa_pod *pod, uint32_t offset)
100 {
101 frame->pod = *pod;
102 frame->offset = offset;
103 frame->parent = parser->state.frame;
104 frame->flags = parser->state.flags;
105 parser->state.frame = frame;
106 }
107
spa_pod_parser_current(struct spa_pod_parser * parser)108 static inline struct spa_pod *spa_pod_parser_current(struct spa_pod_parser *parser)
109 {
110 struct spa_pod_frame *f = parser->state.frame;
111 uint32_t size = f ? f->offset + SPA_POD_SIZE(&f->pod) : parser->size;
112 return spa_pod_parser_deref(parser, parser->state.offset, size);
113 }
114
spa_pod_parser_advance(struct spa_pod_parser * parser,const struct spa_pod * pod)115 static inline void spa_pod_parser_advance(struct spa_pod_parser *parser, const struct spa_pod *pod)
116 {
117 parser->state.offset += SPA_ROUND_UP_N(SPA_POD_SIZE(pod), 8);
118 }
119
spa_pod_parser_next(struct spa_pod_parser * parser)120 static inline struct spa_pod *spa_pod_parser_next(struct spa_pod_parser *parser)
121 {
122 struct spa_pod *pod = spa_pod_parser_current(parser);
123 if (pod)
124 spa_pod_parser_advance(parser, pod);
125 return pod;
126 }
127
spa_pod_parser_pop(struct spa_pod_parser * parser,struct spa_pod_frame * frame)128 static inline int spa_pod_parser_pop(struct spa_pod_parser *parser,
129 struct spa_pod_frame *frame)
130 {
131 parser->state.frame = frame->parent;
132 parser->state.offset = frame->offset + SPA_ROUND_UP_N(SPA_POD_SIZE(&frame->pod), 8);
133 return 0;
134 }
135
spa_pod_parser_get_bool(struct spa_pod_parser * parser,bool * value)136 static inline int spa_pod_parser_get_bool(struct spa_pod_parser *parser, bool *value)
137 {
138 int res = -EPIPE;
139 const struct spa_pod *pod = spa_pod_parser_current(parser);
140 if (pod != NULL && (res = spa_pod_get_bool(pod, value)) >= 0)
141 spa_pod_parser_advance(parser, pod);
142 return res;
143 }
144
spa_pod_parser_get_id(struct spa_pod_parser * parser,uint32_t * value)145 static inline int spa_pod_parser_get_id(struct spa_pod_parser *parser, uint32_t *value)
146 {
147 int res = -EPIPE;
148 const struct spa_pod *pod = spa_pod_parser_current(parser);
149 if (pod != NULL && (res = spa_pod_get_id(pod, value)) >= 0)
150 spa_pod_parser_advance(parser, pod);
151 return res;
152 }
153
spa_pod_parser_get_int(struct spa_pod_parser * parser,int32_t * value)154 static inline int spa_pod_parser_get_int(struct spa_pod_parser *parser, int32_t *value)
155 {
156 int res = -EPIPE;
157 const struct spa_pod *pod = spa_pod_parser_current(parser);
158 if (pod != NULL && (res = spa_pod_get_int(pod, value)) >= 0)
159 spa_pod_parser_advance(parser, pod);
160 return res;
161 }
162
spa_pod_parser_get_long(struct spa_pod_parser * parser,int64_t * value)163 static inline int spa_pod_parser_get_long(struct spa_pod_parser *parser, int64_t *value)
164 {
165 int res = -EPIPE;
166 const struct spa_pod *pod = spa_pod_parser_current(parser);
167 if (pod != NULL && (res = spa_pod_get_long(pod, value)) >= 0)
168 spa_pod_parser_advance(parser, pod);
169 return res;
170 }
171
spa_pod_parser_get_float(struct spa_pod_parser * parser,float * value)172 static inline int spa_pod_parser_get_float(struct spa_pod_parser *parser, float *value)
173 {
174 int res = -EPIPE;
175 const struct spa_pod *pod = spa_pod_parser_current(parser);
176 if (pod != NULL && (res = spa_pod_get_float(pod, value)) >= 0)
177 spa_pod_parser_advance(parser, pod);
178 return res;
179 }
180
spa_pod_parser_get_double(struct spa_pod_parser * parser,double * value)181 static inline int spa_pod_parser_get_double(struct spa_pod_parser *parser, double *value)
182 {
183 int res = -EPIPE;
184 const struct spa_pod *pod = spa_pod_parser_current(parser);
185 if (pod != NULL && (res = spa_pod_get_double(pod, value)) >= 0)
186 spa_pod_parser_advance(parser, pod);
187 return res;
188 }
189
spa_pod_parser_get_string(struct spa_pod_parser * parser,const char ** value)190 static inline int spa_pod_parser_get_string(struct spa_pod_parser *parser, const char **value)
191 {
192 int res = -EPIPE;
193 const struct spa_pod *pod = spa_pod_parser_current(parser);
194 if (pod != NULL && (res = spa_pod_get_string(pod, value)) >= 0)
195 spa_pod_parser_advance(parser, pod);
196 return res;
197 }
198
spa_pod_parser_get_bytes(struct spa_pod_parser * parser,const void ** value,uint32_t * len)199 static inline int spa_pod_parser_get_bytes(struct spa_pod_parser *parser, const void **value, uint32_t *len)
200 {
201 int res = -EPIPE;
202 const struct spa_pod *pod = spa_pod_parser_current(parser);
203 if (pod != NULL && (res = spa_pod_get_bytes(pod, value, len)) >= 0)
204 spa_pod_parser_advance(parser, pod);
205 return res;
206 }
207
spa_pod_parser_get_pointer(struct spa_pod_parser * parser,uint32_t * type,const void ** value)208 static inline int spa_pod_parser_get_pointer(struct spa_pod_parser *parser, uint32_t *type, const void **value)
209 {
210 int res = -EPIPE;
211 const struct spa_pod *pod = spa_pod_parser_current(parser);
212 if (pod != NULL && (res = spa_pod_get_pointer(pod, type, value)) >= 0)
213 spa_pod_parser_advance(parser, pod);
214 return res;
215 }
216
spa_pod_parser_get_fd(struct spa_pod_parser * parser,int64_t * value)217 static inline int spa_pod_parser_get_fd(struct spa_pod_parser *parser, int64_t *value)
218 {
219 int res = -EPIPE;
220 const struct spa_pod *pod = spa_pod_parser_current(parser);
221 if (pod != NULL && (res = spa_pod_get_fd(pod, value)) >= 0)
222 spa_pod_parser_advance(parser, pod);
223 return res;
224 }
225
spa_pod_parser_get_rectangle(struct spa_pod_parser * parser,struct spa_rectangle * value)226 static inline int spa_pod_parser_get_rectangle(struct spa_pod_parser *parser, struct spa_rectangle *value)
227 {
228 int res = -EPIPE;
229 const struct spa_pod *pod = spa_pod_parser_current(parser);
230 if (pod != NULL && (res = spa_pod_get_rectangle(pod, value)) >= 0)
231 spa_pod_parser_advance(parser, pod);
232 return res;
233 }
234
spa_pod_parser_get_fraction(struct spa_pod_parser * parser,struct spa_fraction * value)235 static inline int spa_pod_parser_get_fraction(struct spa_pod_parser *parser, struct spa_fraction *value)
236 {
237 int res = -EPIPE;
238 const struct spa_pod *pod = spa_pod_parser_current(parser);
239 if (pod != NULL && (res = spa_pod_get_fraction(pod, value)) >= 0)
240 spa_pod_parser_advance(parser, pod);
241 return res;
242 }
243
spa_pod_parser_get_pod(struct spa_pod_parser * parser,struct spa_pod ** value)244 static inline int spa_pod_parser_get_pod(struct spa_pod_parser *parser, struct spa_pod **value)
245 {
246 struct spa_pod *pod = spa_pod_parser_current(parser);
247 if (pod == NULL)
248 return -EPIPE;
249 *value = pod;
250 spa_pod_parser_advance(parser, pod);
251 return 0;
252 }
spa_pod_parser_push_struct(struct spa_pod_parser * parser,struct spa_pod_frame * frame)253 static inline int spa_pod_parser_push_struct(struct spa_pod_parser *parser,
254 struct spa_pod_frame *frame)
255 {
256 const struct spa_pod *pod = spa_pod_parser_current(parser);
257 if (pod == NULL)
258 return -EPIPE;
259 if (!spa_pod_is_struct(pod))
260 return -EINVAL;
261 spa_pod_parser_push(parser, frame, pod, parser->state.offset);
262 parser->state.offset += sizeof(struct spa_pod_struct);
263 return 0;
264 }
265
spa_pod_parser_push_object(struct spa_pod_parser * parser,struct spa_pod_frame * frame,uint32_t type,uint32_t * id)266 static inline int spa_pod_parser_push_object(struct spa_pod_parser *parser,
267 struct spa_pod_frame *frame, uint32_t type, uint32_t *id)
268 {
269 const struct spa_pod *pod = spa_pod_parser_current(parser);
270 if (pod == NULL)
271 return -EPIPE;
272 if (!spa_pod_is_object(pod))
273 return -EINVAL;
274 if (type != SPA_POD_OBJECT_TYPE(pod))
275 return -EPROTO;
276 if (id != NULL)
277 *id = SPA_POD_OBJECT_ID(pod);
278 spa_pod_parser_push(parser, frame, pod, parser->state.offset);
279 parser->state.offset = parser->size;
280 return 0;
281 }
282
spa_pod_parser_can_collect(const struct spa_pod * pod,char type)283 static inline bool spa_pod_parser_can_collect(const struct spa_pod *pod, char type)
284 {
285 if (pod == NULL)
286 return false;
287
288 if (spa_pod_is_choice(pod) &&
289 SPA_POD_CHOICE_TYPE(pod) == SPA_CHOICE_None &&
290 spa_pod_parser_can_collect(SPA_POD_CHOICE_CHILD(pod), type))
291 return true;
292
293 switch (type) {
294 case 'P':
295 return true;
296 case 'b':
297 return spa_pod_is_bool(pod);
298 case 'I':
299 return spa_pod_is_id(pod);
300 case 'i':
301 return spa_pod_is_int(pod);
302 case 'l':
303 return spa_pod_is_long(pod);
304 case 'f':
305 return spa_pod_is_float(pod);
306 case 'd':
307 return spa_pod_is_double(pod);
308 case 's':
309 return spa_pod_is_string(pod) || spa_pod_is_none(pod);
310 case 'S':
311 return spa_pod_is_string(pod);
312 case 'y':
313 return spa_pod_is_bytes(pod);
314 case 'R':
315 return spa_pod_is_rectangle(pod);
316 case 'F':
317 return spa_pod_is_fraction(pod);
318 case 'B':
319 return spa_pod_is_bitmap(pod);
320 case 'a':
321 return spa_pod_is_array(pod);
322 case 'p':
323 return spa_pod_is_pointer(pod);
324 case 'h':
325 return spa_pod_is_fd(pod);
326 case 'T':
327 return spa_pod_is_struct(pod) || spa_pod_is_none(pod);
328 case 'O':
329 return spa_pod_is_object(pod) || spa_pod_is_none(pod);
330 case 'V':
331 return spa_pod_is_choice(pod);
332 default:
333 return false;
334 }
335 }
336
337 #define SPA_POD_PARSER_COLLECT(pod,_type,args) \
338 do { \
339 switch (_type) { \
340 case 'b': \
341 *va_arg(args, bool*) = SPA_POD_VALUE(struct spa_pod_bool, pod); \
342 break; \
343 case 'I': \
344 case 'i': \
345 *va_arg(args, int32_t*) = SPA_POD_VALUE(struct spa_pod_int, pod); \
346 break; \
347 case 'l': \
348 *va_arg(args, int64_t*) = SPA_POD_VALUE(struct spa_pod_long, pod); \
349 break; \
350 case 'f': \
351 *va_arg(args, float*) = SPA_POD_VALUE(struct spa_pod_float, pod); \
352 break; \
353 case 'd': \
354 *va_arg(args, double*) = SPA_POD_VALUE(struct spa_pod_double, pod); \
355 break; \
356 case 's': \
357 *va_arg(args, char**) = \
358 (pod == NULL || (SPA_POD_TYPE(pod) == SPA_TYPE_None) \
359 ? NULL \
360 : (char *)SPA_POD_CONTENTS(struct spa_pod_string, pod)); \
361 break; \
362 case 'S': \
363 { \
364 char *dest = va_arg(args, char*); \
365 uint32_t maxlen = va_arg(args, uint32_t); \
366 strncpy(dest, (char *)SPA_POD_CONTENTS(struct spa_pod_string, pod), maxlen-1); \
367 dest[maxlen-1] = '\0'; \
368 break; \
369 } \
370 case 'y': \
371 *(va_arg(args, void **)) = SPA_POD_CONTENTS(struct spa_pod_bytes, pod); \
372 *(va_arg(args, uint32_t *)) = SPA_POD_BODY_SIZE(pod); \
373 break; \
374 case 'R': \
375 *va_arg(args, struct spa_rectangle*) = \
376 SPA_POD_VALUE(struct spa_pod_rectangle, pod); \
377 break; \
378 case 'F': \
379 *va_arg(args, struct spa_fraction*) = \
380 SPA_POD_VALUE(struct spa_pod_fraction, pod); \
381 break; \
382 case 'B': \
383 *va_arg(args, uint32_t **) = \
384 (uint32_t *) SPA_POD_CONTENTS(struct spa_pod_bitmap, pod); \
385 break; \
386 case 'a': \
387 *va_arg(args, uint32_t*) = SPA_POD_ARRAY_VALUE_SIZE(pod); \
388 *va_arg(args, uint32_t*) = SPA_POD_ARRAY_VALUE_TYPE(pod); \
389 *va_arg(args, uint32_t*) = SPA_POD_ARRAY_N_VALUES(pod); \
390 *va_arg(args, void**) = SPA_POD_ARRAY_VALUES(pod); \
391 break; \
392 case 'p': \
393 { \
394 struct spa_pod_pointer_body *b = \
395 (struct spa_pod_pointer_body *) SPA_POD_BODY(pod); \
396 *(va_arg(args, uint32_t *)) = b->type; \
397 *(va_arg(args, const void **)) = b->value; \
398 break; \
399 } \
400 case 'h': \
401 *va_arg(args, int64_t*) = SPA_POD_VALUE(struct spa_pod_fd, pod); \
402 break; \
403 case 'P': \
404 case 'T': \
405 case 'O': \
406 case 'V': \
407 { \
408 const struct spa_pod **d = va_arg(args, const struct spa_pod**); \
409 if (d) \
410 *d = (pod == NULL || (SPA_POD_TYPE(pod) == SPA_TYPE_None) \
411 ? NULL : pod); \
412 break; \
413 } \
414 default: \
415 break; \
416 } \
417 } while(false)
418
419 #define SPA_POD_PARSER_SKIP(_type,args) \
420 do { \
421 switch (_type) { \
422 case 'S': \
423 va_arg(args, char*); \
424 va_arg(args, uint32_t); \
425 break; \
426 case 'a': \
427 va_arg(args, void*); \
428 va_arg(args, void*); \
429 SPA_FALLTHROUGH \
430 case 'p': \
431 case 'y': \
432 va_arg(args, void*); \
433 SPA_FALLTHROUGH \
434 case 'b': \
435 case 'I': \
436 case 'i': \
437 case 'l': \
438 case 'f': \
439 case 'd': \
440 case 's': \
441 case 'R': \
442 case 'F': \
443 case 'B': \
444 case 'h': \
445 case 'V': \
446 case 'P': \
447 case 'T': \
448 case 'O': \
449 va_arg(args, void*); \
450 break; \
451 } \
452 } while(false)
453
spa_pod_parser_getv(struct spa_pod_parser * parser,va_list args)454 static inline int spa_pod_parser_getv(struct spa_pod_parser *parser, va_list args)
455 {
456 struct spa_pod_frame *f = parser->state.frame;
457 uint32_t ftype = f ? f->pod.type : (uint32_t)SPA_TYPE_Struct;
458 const struct spa_pod_prop *prop = NULL;
459 int count = 0;
460
461 do {
462 bool optional;
463 const struct spa_pod *pod = NULL;
464 const char *format;
465
466 if (ftype == SPA_TYPE_Object) {
467 uint32_t key = va_arg(args, uint32_t);
468 const struct spa_pod_object *object;
469
470 if (key == 0)
471 break;
472
473 object = (const struct spa_pod_object *)spa_pod_parser_frame(parser, f);
474 prop = spa_pod_object_find_prop(object, prop, key);
475 pod = prop ? &prop->value : NULL;
476 }
477
478 if ((format = va_arg(args, char *)) == NULL)
479 break;
480
481 if (ftype == SPA_TYPE_Struct)
482 pod = spa_pod_parser_next(parser);
483
484 if ((optional = (*format == '?')))
485 format++;
486
487 if (!spa_pod_parser_can_collect(pod, *format)) {
488 if (!optional) {
489 if (pod == NULL)
490 return -ESRCH;
491 else
492 return -EPROTO;
493 }
494 SPA_POD_PARSER_SKIP(*format, args);
495 } else {
496 if (pod->type == SPA_TYPE_Choice && *format != 'V' &&
497 SPA_POD_CHOICE_TYPE(pod) == SPA_CHOICE_None)
498 pod = SPA_POD_CHOICE_CHILD(pod);
499
500 SPA_POD_PARSER_COLLECT(pod, *format, args);
501 count++;
502 }
503 } while (true);
504
505 return count;
506 }
507
spa_pod_parser_get(struct spa_pod_parser * parser,...)508 static inline int spa_pod_parser_get(struct spa_pod_parser *parser, ...)
509 {
510 int res;
511 va_list args;
512
513 va_start(args, parser);
514 res = spa_pod_parser_getv(parser, args);
515 va_end(args);
516
517 return res;
518 }
519
520 #define SPA_POD_OPT_Bool(val) "?" SPA_POD_Bool(val)
521 #define SPA_POD_OPT_Id(val) "?" SPA_POD_Id(val)
522 #define SPA_POD_OPT_Int(val) "?" SPA_POD_Int(val)
523 #define SPA_POD_OPT_Long(val) "?" SPA_POD_Long(val)
524 #define SPA_POD_OPT_Float(val) "?" SPA_POD_Float(val)
525 #define SPA_POD_OPT_Double(val) "?" SPA_POD_Double(val)
526 #define SPA_POD_OPT_String(val) "?" SPA_POD_String(val)
527 #define SPA_POD_OPT_Stringn(val,len) "?" SPA_POD_Stringn(val,len)
528 #define SPA_POD_OPT_Bytes(val,len) "?" SPA_POD_Bytes(val,len)
529 #define SPA_POD_OPT_Rectangle(val) "?" SPA_POD_Rectangle(val)
530 #define SPA_POD_OPT_Fraction(val) "?" SPA_POD_Fraction(val)
531 #define SPA_POD_OPT_Array(csize,ctype,n_vals,vals) "?" SPA_POD_Array(csize,ctype,n_vals,vals)
532 #define SPA_POD_OPT_Pointer(type,val) "?" SPA_POD_Pointer(type,val)
533 #define SPA_POD_OPT_Fd(val) "?" SPA_POD_Fd(val)
534 #define SPA_POD_OPT_Pod(val) "?" SPA_POD_Pod(val)
535 #define SPA_POD_OPT_PodObject(val) "?" SPA_POD_PodObject(val)
536 #define SPA_POD_OPT_PodStruct(val) "?" SPA_POD_PodStruct(val)
537 #define SPA_POD_OPT_PodChoice(val) "?" SPA_POD_PodChoice(val)
538
539 #define spa_pod_parser_get_object(p,type,id,...) \
540 ({ \
541 struct spa_pod_frame _f; \
542 int _res; \
543 if ((_res = spa_pod_parser_push_object(p, &_f, type, id)) == 0) { \
544 _res = spa_pod_parser_get(p,##__VA_ARGS__, 0); \
545 spa_pod_parser_pop(p, &_f); \
546 } \
547 _res; \
548 })
549
550 #define spa_pod_parser_get_struct(p,...) \
551 ({ \
552 struct spa_pod_frame _f; \
553 int _res; \
554 if ((_res = spa_pod_parser_push_struct(p, &_f)) == 0) { \
555 _res = spa_pod_parser_get(p,##__VA_ARGS__, NULL); \
556 spa_pod_parser_pop(p, &_f); \
557 } \
558 _res; \
559 })
560
561 #define spa_pod_parse_object(pod,type,id,...) \
562 ({ \
563 struct spa_pod_parser _p; \
564 spa_pod_parser_pod(&_p, pod); \
565 spa_pod_parser_get_object(&_p,type,id,##__VA_ARGS__); \
566 })
567
568 #define spa_pod_parse_struct(pod,...) \
569 ({ \
570 struct spa_pod_parser _p; \
571 spa_pod_parser_pod(&_p, pod); \
572 spa_pod_parser_get_struct(&_p,##__VA_ARGS__); \
573 })
574
575 /**
576 * \}
577 */
578
579 #ifdef __cplusplus
580 } /* extern "C" */
581 #endif
582
583 #endif /* SPA_POD_PARSER_H */
584