PipeWire: spa/pod/parser.h Source File

PipeWire 0.3.51

parser.h
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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
29extern "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
43struct 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
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
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
71 spa_pod_parser_get_state(struct spa_pod_parser *parser, struct spa_pod_parser_state *state)
72{
73 *state = parser->state;
74}
75
76static inline void
77 spa_pod_parser_reset(struct spa_pod_parser *parser, struct spa_pod_parser_state *state)
78{
79 parser->state = *state;
80}
81
82static inline struct spa_pod *
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
93static 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
98static 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
108static 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
115static 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
120static 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
128static 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
136static 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
145static 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
154static 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
163static 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
172static 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
181static 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
190static 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
199static 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
208static 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
217static 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
226static 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
235static 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
244static 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}
253static 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
266static 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
283static 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) \
338do { \
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) \
420do { \
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
454static 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
508static 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
579#ifdef __cplusplus
580} /* extern "C" */
581#endif
582
583#endif /* SPA_POD_PARSER_H */
spa_pod_is_bitmap
static int spa_pod_is_bitmap(const struct spa_pod *pod)
Definition: iter.h:330
spa_pod_parser_pod
static void spa_pod_parser_pod(struct spa_pod_parser *parser, const struct spa_pod *pod)
Definition: parser.h:70
spa_pod_get_int
static int spa_pod_get_int(const struct spa_pod *pod, int32_t *value)
Definition: iter.h:187
spa_pod_parser_get_double
static int spa_pod_parser_get_double(struct spa_pod_parser *parser, double *value)
Definition: parser.h:187
spa_pod_is_long
static int spa_pod_is_long(const struct spa_pod *pod)
Definition: iter.h:195
spa_pod_is_bytes
static int spa_pod_is_bytes(const struct spa_pod *pod)
Definition: iter.h:260
spa_pod_parser_get_float
static int spa_pod_parser_get_float(struct spa_pod_parser *parser, float *value)
Definition: parser.h:178
spa_pod_object_find_prop
static const struct spa_pod_prop * spa_pod_object_find_prop(const struct spa_pod_object *pod, const struct spa_pod_prop *start, uint32_t key)
Definition: iter.h:408
spa_pod_get_pointer
static int spa_pod_get_pointer(const struct spa_pod *pod, uint32_t *type, const void **value)
Definition: iter.h:280
spa_pod_parser_get_bytes
static int spa_pod_parser_get_bytes(struct spa_pod_parser *parser, const void **value, uint32_t *len)
Definition: parser.h:205
spa_pod_get_fraction
static int spa_pod_get_fraction(const struct spa_pod *pod, struct spa_fraction *value)
Definition: iter.h:323
spa_pod_parser_get
static int spa_pod_parser_get(struct spa_pod_parser *parser,...)
Definition: parser.h:514
spa_pod_parser_current
static struct spa_pod * spa_pod_parser_current(struct spa_pod_parser *parser)
Definition: parser.h:114
spa_pod_is_rectangle
static int spa_pod_is_rectangle(const struct spa_pod *pod)
Definition: iter.h:303
spa_pod_is_fd
static int spa_pod_is_fd(const struct spa_pod *pod)
Definition: iter.h:289
spa_pod_is_pointer
static int spa_pod_is_pointer(const struct spa_pod *pod)
Definition: iter.h:274
spa_pod_get_id
static int spa_pod_get_id(const struct spa_pod *pod, uint32_t *value)
Definition: iter.h:174
spa_pod_parser_get_long
static int spa_pod_parser_get_long(struct spa_pod_parser *parser, int64_t *value)
Definition: parser.h:169
spa_pod_get_float
static int spa_pod_get_float(const struct spa_pod *pod, float *value)
Definition: iter.h:213
spa_pod_parser_get_int
static int spa_pod_parser_get_int(struct spa_pod_parser *parser, int32_t *value)
Definition: parser.h:160
spa_pod_parser_get_pod
static int spa_pod_parser_get_pod(struct spa_pod_parser *parser, struct spa_pod **value)
Definition: parser.h:250
spa_pod_parser_push_struct
static int spa_pod_parser_push_struct(struct spa_pod_parser *parser, struct spa_pod_frame *frame)
Definition: parser.h:259
spa_pod_parser_get_state
static void spa_pod_parser_get_state(struct spa_pod_parser *parser, struct spa_pod_parser_state *state)
Definition: parser.h:77
SPA_POD_PARSER_COLLECT
#define SPA_POD_PARSER_COLLECT(pod, _type, args)
Definition: parser.h:343
spa_pod_parser_deref
static struct spa_pod * spa_pod_parser_deref(struct spa_pod_parser *parser, uint32_t offset, uint32_t size)
Definition: parser.h:89
spa_pod_parser_get_string
static int spa_pod_parser_get_string(struct spa_pod_parser *parser, const char **value)
Definition: parser.h:196
spa_pod_parser_get_rectangle
static int spa_pod_parser_get_rectangle(struct spa_pod_parser *parser, struct spa_rectangle *value)
Definition: parser.h:232
spa_pod_parser_push_object
static int spa_pod_parser_push_object(struct spa_pod_parser *parser, struct spa_pod_frame *frame, uint32_t type, uint32_t *id)
Definition: parser.h:272
spa_pod_is_object
static int spa_pod_is_object(const struct spa_pod *pod)
Definition: iter.h:386
spa_pod_get_rectangle
static int spa_pod_get_rectangle(const struct spa_pod *pod, struct spa_rectangle *value)
Definition: iter.h:309
spa_pod_get_fd
static int spa_pod_get_fd(const struct spa_pod *pod, int64_t *value)
Definition: iter.h:295
spa_pod_is_struct
static int spa_pod_is_struct(const struct spa_pod *pod)
Definition: iter.h:381
SPA_POD_PARSER_SKIP
#define SPA_POD_PARSER_SKIP(_type, args)
Definition: parser.h:425
spa_pod_parser_next
static struct spa_pod * spa_pod_parser_next(struct spa_pod_parser *parser)
Definition: parser.h:126
spa_pod_get_long
static int spa_pod_get_long(const struct spa_pod *pod, int64_t *value)
Definition: iter.h:200
spa_pod_parser_advance
static void spa_pod_parser_advance(struct spa_pod_parser *parser, const struct spa_pod *pod)
Definition: parser.h:121
spa_pod_parser_push
static void spa_pod_parser_push(struct spa_pod_parser *parser, struct spa_pod_frame *frame, const struct spa_pod *pod, uint32_t offset)
Definition: parser.h:104
spa_pod_is_string
static int spa_pod_is_string(const struct spa_pod *pod)
Definition: iter.h:234
spa_pod_parser_init
static void spa_pod_parser_init(struct spa_pod_parser *parser, const void *data, uint32_t size)
Definition: parser.h:64
spa_pod_parser_get_bool
static int spa_pod_parser_get_bool(struct spa_pod_parser *parser, bool *value)
Definition: parser.h:142
spa_pod_is_choice
static int spa_pod_is_choice(const struct spa_pod *pod)
Definition: iter.h:361
spa_pod_get_string
static int spa_pod_get_string(const struct spa_pod *pod, const char **value)
Definition: iter.h:242
spa_pod_get_double
static int spa_pod_get_double(const struct spa_pod *pod, double *value)
Definition: iter.h:226
spa_pod_parser_get_fd
static int spa_pod_parser_get_fd(struct spa_pod_parser *parser, int64_t *value)
Definition: parser.h:223
SPA_POD_PARSER_INIT
#define SPA_POD_PARSER_INIT(buffer, size)
Definition: parser.h:62
spa_pod_get_bool
static int spa_pod_get_bool(const struct spa_pod *pod, bool *value)
Definition: iter.h:161
spa_pod_parser_get_pointer
static int spa_pod_parser_get_pointer(struct spa_pod_parser *parser, uint32_t *type, const void **value)
Definition: parser.h:214
spa_pod_parser_frame
static struct spa_pod * spa_pod_parser_frame(struct spa_pod_parser *parser, struct spa_pod_frame *frame)
Definition: parser.h:99
SPA_POD_OBJECT_TYPE
#define SPA_POD_OBJECT_TYPE(obj)
Definition: pod.h:193
SPA_POD_OBJECT_ID
#define SPA_POD_OBJECT_ID(obj)
Definition: pod.h:195
spa_pod_parser_getv
static int spa_pod_parser_getv(struct spa_pod_parser *parser, va_list args)
Definition: parser.h:460
spa_pod_is_array
static int spa_pod_is_array(const struct spa_pod *pod)
Definition: iter.h:336
spa_pod_parser_get_id
static int spa_pod_parser_get_id(struct spa_pod_parser *parser, uint32_t *value)
Definition: parser.h:151
spa_pod_is_id
static int spa_pod_is_id(const struct spa_pod *pod)
Definition: iter.h:169
spa_pod_is_double
static int spa_pod_is_double(const struct spa_pod *pod)
Definition: iter.h:221
spa_pod_is_int
static int spa_pod_is_int(const struct spa_pod *pod)
Definition: iter.h:182
spa_pod_parser_reset
static void spa_pod_parser_reset(struct spa_pod_parser *parser, struct spa_pod_parser_state *state)
Definition: parser.h:83
spa_pod_parser_can_collect
static bool spa_pod_parser_can_collect(const struct spa_pod *pod, char type)
Definition: parser.h:289
spa_pod_is_none
static int spa_pod_is_none(const struct spa_pod *pod)
Definition: iter.h:151
spa_pod_is_fraction
static int spa_pod_is_fraction(const struct spa_pod *pod)
Definition: iter.h:317
SPA_POD_SIZE
#define SPA_POD_SIZE(pod)
Definition: pod.h:50
spa_pod_parser_get_fraction
static int spa_pod_parser_get_fraction(struct spa_pod_parser *parser, struct spa_fraction *value)
Definition: parser.h:241
spa_pod_parser_pop
static int spa_pod_parser_pop(struct spa_pod_parser *parser, struct spa_pod_frame *frame)
Definition: parser.h:134
spa_pod_is_float
static int spa_pod_is_float(const struct spa_pod *pod)
Definition: iter.h:208
SPA_POD_CHOICE_CHILD
#define SPA_POD_CHOICE_CHILD(choice)
Definition: pod.h:152
SPA_POD_CHOICE_TYPE
#define SPA_POD_CHOICE_TYPE(choice)
Definition: pod.h:154
spa_pod_get_bytes
static int spa_pod_get_bytes(const struct spa_pod *pod, const void **value, uint32_t *len)
Definition: iter.h:265
spa_pod_is_bool
static int spa_pod_is_bool(const struct spa_pod *pod)
Definition: iter.h:156
SPA_CHOICE_None
@ SPA_CHOICE_None
no choice, first value is current
Definition: pod.h:167
SPA_TYPE_Object
@ SPA_TYPE_Object
Definition: type.h:65
SPA_TYPE_Choice
@ SPA_TYPE_Choice
Definition: type.h:69
SPA_TYPE_Struct
@ SPA_TYPE_Struct
Definition: type.h:64
SPA_ROUND_UP_N
#define SPA_ROUND_UP_N(num, align)
Definition: defs.h:296
SPA_PTROFF
#define SPA_PTROFF(ptr_, offset_, type_)
Return the address (buffer + offset) as pointer of type.
Definition: defs.h:183
iter.h
spa/pod/iter.h
spa_fraction
Definition: defs.h:121
spa_pod_frame
Definition: iter.h:47
spa_pod_frame::pod
struct spa_pod pod
Definition: iter.h:48
spa_pod_frame::offset
uint32_t offset
Definition: iter.h:50
spa_pod_frame::parent
struct spa_pod_frame * parent
Definition: iter.h:49
spa_pod_frame::flags
uint32_t flags
Definition: iter.h:51
spa_pod_object
Definition: pod.h:203
spa_pod_object::pod
struct spa_pod pod
Definition: pod.h:204
spa_pod_parser_state
Definition: parser.h:48
spa_pod_parser_state::offset
uint32_t offset
Definition: parser.h:49
spa_pod_parser_state::flags
uint32_t flags
Definition: parser.h:50
spa_pod_parser_state::frame
struct spa_pod_frame * frame
Definition: parser.h:51
spa_pod_parser
Definition: parser.h:54
spa_pod_parser::size
uint32_t size
Definition: parser.h:56
spa_pod_parser::state
struct spa_pod_parser_state state
Definition: parser.h:58
spa_pod_parser::data
const void * data
Definition: parser.h:55
spa_pod_parser::_padding
uint32_t _padding
Definition: parser.h:57
spa_pod_prop
Definition: pod.h:228
spa_pod_prop::value
struct spa_pod value
Definition: pod.h:246
spa_pod_struct
Definition: pod.h:187
spa_pod
Definition: pod.h:63
spa_pod::type
uint32_t type
Definition: pod.h:65
spa_pod::size
uint32_t size
Definition: pod.h:64
spa_rectangle
Definition: defs.h:100
vararg.h
spa/pod/vararg.h