PipeWire 0.3.65
parser.h
Go to the documentation of this file.
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
49struct 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
58static 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
64static 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
70static inline void
71spa_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
77spa_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 *
83spa_pod_parser_deref(struct spa_pod_parser *parser, uint32_t offset, uint32_t size)
84{
85 /* Cast to uint64_t to avoid wraparound. Add 8 for the pod itself. */
86 const uint64_t long_offset = (uint64_t)offset + 8;
87 if (long_offset <= size && (offset & 7) == 0) {
88 /* Use void* because creating a misaligned pointer is undefined. */
89 void *pod = SPA_PTROFF(parser->data, offset, void);
90 /*
91 * Check that the pointer is aligned and that the size (rounded
92 * to the next multiple of 8) is in bounds.
93 */
94 if (SPA_IS_ALIGNED(pod, __alignof__(struct spa_pod)) &&
95 long_offset + SPA_ROUND_UP_N((uint64_t)SPA_POD_BODY_SIZE(pod), 8) <= size)
96 return (struct spa_pod *)pod;
97 }
98 return NULL;
99}
100
101static inline struct spa_pod *spa_pod_parser_frame(struct spa_pod_parser *parser, struct spa_pod_frame *frame)
102{
103 return SPA_PTROFF(parser->data, frame->offset, struct spa_pod);
104}
105
106static inline void spa_pod_parser_push(struct spa_pod_parser *parser,
107 struct spa_pod_frame *frame, const struct spa_pod *pod, uint32_t offset)
108{
109 frame->pod = *pod;
110 frame->offset = offset;
111 frame->parent = parser->state.frame;
112 frame->flags = parser->state.flags;
113 parser->state.frame = frame;
114}
115
116static inline struct spa_pod *spa_pod_parser_current(struct spa_pod_parser *parser)
117{
118 struct spa_pod_frame *f = parser->state.frame;
119 uint32_t size = f ? f->offset + SPA_POD_SIZE(&f->pod) : parser->size;
120 return spa_pod_parser_deref(parser, parser->state.offset, size);
121}
122
123static inline void spa_pod_parser_advance(struct spa_pod_parser *parser, const struct spa_pod *pod)
124{
125 parser->state.offset += SPA_ROUND_UP_N(SPA_POD_SIZE(pod), 8);
126}
127
128static inline struct spa_pod *spa_pod_parser_next(struct spa_pod_parser *parser)
129{
130 struct spa_pod *pod = spa_pod_parser_current(parser);
131 if (pod)
132 spa_pod_parser_advance(parser, pod);
133 return pod;
134}
135
136static inline int spa_pod_parser_pop(struct spa_pod_parser *parser,
137 struct spa_pod_frame *frame)
138{
139 parser->state.frame = frame->parent;
140 parser->state.offset = frame->offset + SPA_ROUND_UP_N(SPA_POD_SIZE(&frame->pod), 8);
141 return 0;
142}
143
144static inline int spa_pod_parser_get_bool(struct spa_pod_parser *parser, bool *value)
145{
146 int res = -EPIPE;
147 const struct spa_pod *pod = spa_pod_parser_current(parser);
148 if (pod != NULL && (res = spa_pod_get_bool(pod, value)) >= 0)
149 spa_pod_parser_advance(parser, pod);
150 return res;
151}
152
153static inline int spa_pod_parser_get_id(struct spa_pod_parser *parser, uint32_t *value)
154{
155 int res = -EPIPE;
156 const struct spa_pod *pod = spa_pod_parser_current(parser);
157 if (pod != NULL && (res = spa_pod_get_id(pod, value)) >= 0)
158 spa_pod_parser_advance(parser, pod);
159 return res;
160}
161
162static inline int spa_pod_parser_get_int(struct spa_pod_parser *parser, int32_t *value)
163{
164 int res = -EPIPE;
165 const struct spa_pod *pod = spa_pod_parser_current(parser);
166 if (pod != NULL && (res = spa_pod_get_int(pod, value)) >= 0)
167 spa_pod_parser_advance(parser, pod);
168 return res;
169}
170
171static inline int spa_pod_parser_get_long(struct spa_pod_parser *parser, int64_t *value)
172{
173 int res = -EPIPE;
174 const struct spa_pod *pod = spa_pod_parser_current(parser);
175 if (pod != NULL && (res = spa_pod_get_long(pod, value)) >= 0)
176 spa_pod_parser_advance(parser, pod);
177 return res;
178}
179
180static inline int spa_pod_parser_get_float(struct spa_pod_parser *parser, float *value)
181{
182 int res = -EPIPE;
183 const struct spa_pod *pod = spa_pod_parser_current(parser);
184 if (pod != NULL && (res = spa_pod_get_float(pod, value)) >= 0)
185 spa_pod_parser_advance(parser, pod);
186 return res;
187}
188
189static inline int spa_pod_parser_get_double(struct spa_pod_parser *parser, double *value)
190{
191 int res = -EPIPE;
192 const struct spa_pod *pod = spa_pod_parser_current(parser);
193 if (pod != NULL && (res = spa_pod_get_double(pod, value)) >= 0)
194 spa_pod_parser_advance(parser, pod);
195 return res;
196}
197
198static inline int spa_pod_parser_get_string(struct spa_pod_parser *parser, const char **value)
199{
200 int res = -EPIPE;
201 const struct spa_pod *pod = spa_pod_parser_current(parser);
202 if (pod != NULL && (res = spa_pod_get_string(pod, value)) >= 0)
203 spa_pod_parser_advance(parser, pod);
204 return res;
205}
206
207static inline int spa_pod_parser_get_bytes(struct spa_pod_parser *parser, const void **value, uint32_t *len)
208{
209 int res = -EPIPE;
210 const struct spa_pod *pod = spa_pod_parser_current(parser);
211 if (pod != NULL && (res = spa_pod_get_bytes(pod, value, len)) >= 0)
212 spa_pod_parser_advance(parser, pod);
213 return res;
214}
215
216static inline int spa_pod_parser_get_pointer(struct spa_pod_parser *parser, uint32_t *type, const void **value)
217{
218 int res = -EPIPE;
219 const struct spa_pod *pod = spa_pod_parser_current(parser);
220 if (pod != NULL && (res = spa_pod_get_pointer(pod, type, value)) >= 0)
221 spa_pod_parser_advance(parser, pod);
222 return res;
223}
224
225static inline int spa_pod_parser_get_fd(struct spa_pod_parser *parser, int64_t *value)
226{
227 int res = -EPIPE;
228 const struct spa_pod *pod = spa_pod_parser_current(parser);
229 if (pod != NULL && (res = spa_pod_get_fd(pod, value)) >= 0)
230 spa_pod_parser_advance(parser, pod);
231 return res;
232}
233
234static inline int spa_pod_parser_get_rectangle(struct spa_pod_parser *parser, struct spa_rectangle *value)
235{
236 int res = -EPIPE;
237 const struct spa_pod *pod = spa_pod_parser_current(parser);
238 if (pod != NULL && (res = spa_pod_get_rectangle(pod, value)) >= 0)
239 spa_pod_parser_advance(parser, pod);
240 return res;
241}
242
243static inline int spa_pod_parser_get_fraction(struct spa_pod_parser *parser, struct spa_fraction *value)
244{
245 int res = -EPIPE;
246 const struct spa_pod *pod = spa_pod_parser_current(parser);
247 if (pod != NULL && (res = spa_pod_get_fraction(pod, value)) >= 0)
248 spa_pod_parser_advance(parser, pod);
249 return res;
250}
251
252static inline int spa_pod_parser_get_pod(struct spa_pod_parser *parser, struct spa_pod **value)
253{
254 struct spa_pod *pod = spa_pod_parser_current(parser);
255 if (pod == NULL)
256 return -EPIPE;
257 *value = pod;
258 spa_pod_parser_advance(parser, pod);
259 return 0;
260}
261static inline int spa_pod_parser_push_struct(struct spa_pod_parser *parser,
262 struct spa_pod_frame *frame)
263{
264 const struct spa_pod *pod = spa_pod_parser_current(parser);
265 if (pod == NULL)
266 return -EPIPE;
267 if (!spa_pod_is_struct(pod))
268 return -EINVAL;
269 spa_pod_parser_push(parser, frame, pod, parser->state.offset);
270 parser->state.offset += sizeof(struct spa_pod_struct);
271 return 0;
272}
273
274static inline int spa_pod_parser_push_object(struct spa_pod_parser *parser,
275 struct spa_pod_frame *frame, uint32_t type, uint32_t *id)
276{
277 const struct spa_pod *pod = spa_pod_parser_current(parser);
278 if (pod == NULL)
279 return -EPIPE;
280 if (!spa_pod_is_object(pod))
281 return -EINVAL;
282 if (type != SPA_POD_OBJECT_TYPE(pod))
283 return -EPROTO;
284 if (id != NULL)
285 *id = SPA_POD_OBJECT_ID(pod);
286 spa_pod_parser_push(parser, frame, pod, parser->state.offset);
287 parser->state.offset = parser->size;
288 return 0;
289}
290
291static inline bool spa_pod_parser_can_collect(const struct spa_pod *pod, char type)
292{
293 if (pod == NULL)
294 return false;
295
296 if (SPA_POD_TYPE(pod) == SPA_TYPE_Choice) {
297 if (!spa_pod_is_choice(pod))
298 return false;
299 if (type == 'V')
300 return true;
301 if (SPA_POD_CHOICE_TYPE(pod) != SPA_CHOICE_None)
302 return false;
303 pod = SPA_POD_CHOICE_CHILD(pod);
304 }
305
306 switch (type) {
307 case 'P':
308 return true;
309 case 'b':
310 return spa_pod_is_bool(pod);
311 case 'I':
312 return spa_pod_is_id(pod);
313 case 'i':
314 return spa_pod_is_int(pod);
315 case 'l':
316 return spa_pod_is_long(pod);
317 case 'f':
318 return spa_pod_is_float(pod);
319 case 'd':
320 return spa_pod_is_double(pod);
321 case 's':
322 return spa_pod_is_string(pod) || spa_pod_is_none(pod);
323 case 'S':
324 return spa_pod_is_string(pod);
325 case 'y':
326 return spa_pod_is_bytes(pod);
327 case 'R':
328 return spa_pod_is_rectangle(pod);
329 case 'F':
330 return spa_pod_is_fraction(pod);
331 case 'B':
332 return spa_pod_is_bitmap(pod);
333 case 'a':
334 return spa_pod_is_array(pod);
335 case 'p':
336 return spa_pod_is_pointer(pod);
337 case 'h':
338 return spa_pod_is_fd(pod);
339 case 'T':
340 return spa_pod_is_struct(pod) || spa_pod_is_none(pod);
341 case 'O':
342 return spa_pod_is_object(pod) || spa_pod_is_none(pod);
343 case 'V':
344 default:
345 return false;
346 }
347}
348
349#define SPA_POD_PARSER_COLLECT(pod,_type,args) \
350do { \
351 switch (_type) { \
352 case 'b': \
353 *va_arg(args, bool*) = SPA_POD_VALUE(struct spa_pod_bool, pod); \
354 break; \
355 case 'I': \
356 case 'i': \
357 *va_arg(args, int32_t*) = SPA_POD_VALUE(struct spa_pod_int, pod); \
358 break; \
359 case 'l': \
360 *va_arg(args, int64_t*) = SPA_POD_VALUE(struct spa_pod_long, pod); \
361 break; \
362 case 'f': \
363 *va_arg(args, float*) = SPA_POD_VALUE(struct spa_pod_float, pod); \
364 break; \
365 case 'd': \
366 *va_arg(args, double*) = SPA_POD_VALUE(struct spa_pod_double, pod); \
367 break; \
368 case 's': \
369 *va_arg(args, char**) = \
370 ((pod) == NULL || (SPA_POD_TYPE(pod) == SPA_TYPE_None) \
371 ? NULL \
372 : (char *)SPA_POD_CONTENTS(struct spa_pod_string, pod)); \
373 break; \
374 case 'S': \
375 { \
376 char *dest = va_arg(args, char*); \
377 uint32_t maxlen = va_arg(args, uint32_t); \
378 strncpy(dest, (char *)SPA_POD_CONTENTS(struct spa_pod_string, pod), maxlen-1); \
379 dest[maxlen-1] = '\0'; \
380 break; \
381 } \
382 case 'y': \
383 *(va_arg(args, void **)) = SPA_POD_CONTENTS(struct spa_pod_bytes, pod); \
384 *(va_arg(args, uint32_t *)) = SPA_POD_BODY_SIZE(pod); \
385 break; \
386 case 'R': \
387 *va_arg(args, struct spa_rectangle*) = \
388 SPA_POD_VALUE(struct spa_pod_rectangle, pod); \
389 break; \
390 case 'F': \
391 *va_arg(args, struct spa_fraction*) = \
392 SPA_POD_VALUE(struct spa_pod_fraction, pod); \
393 break; \
394 case 'B': \
395 *va_arg(args, uint32_t **) = \
396 (uint32_t *) SPA_POD_CONTENTS(struct spa_pod_bitmap, pod); \
397 break; \
398 case 'a': \
399 *va_arg(args, uint32_t*) = SPA_POD_ARRAY_VALUE_SIZE(pod); \
400 *va_arg(args, uint32_t*) = SPA_POD_ARRAY_VALUE_TYPE(pod); \
401 *va_arg(args, uint32_t*) = SPA_POD_ARRAY_N_VALUES(pod); \
402 *va_arg(args, void**) = SPA_POD_ARRAY_VALUES(pod); \
403 break; \
404 case 'p': \
405 { \
406 struct spa_pod_pointer_body *b = \
407 (struct spa_pod_pointer_body *) SPA_POD_BODY(pod); \
408 *(va_arg(args, uint32_t *)) = b->type; \
409 *(va_arg(args, const void **)) = b->value; \
410 break; \
411 } \
412 case 'h': \
413 *va_arg(args, int64_t*) = SPA_POD_VALUE(struct spa_pod_fd, pod); \
414 break; \
415 case 'P': \
416 case 'T': \
417 case 'O': \
418 case 'V': \
419 { \
420 const struct spa_pod **d = va_arg(args, const struct spa_pod**); \
421 if (d) \
422 *d = ((pod) == NULL || (SPA_POD_TYPE(pod) == SPA_TYPE_None) \
423 ? NULL : (pod)); \
424 break; \
425 } \
426 default: \
427 break; \
428 } \
429} while(false)
430
431#define SPA_POD_PARSER_SKIP(_type,args) \
432do { \
433 switch (_type) { \
434 case 'S': \
435 va_arg(args, char*); \
436 va_arg(args, uint32_t); \
437 break; \
438 case 'a': \
439 va_arg(args, void*); \
440 va_arg(args, void*); \
441 SPA_FALLTHROUGH \
442 case 'p': \
443 case 'y': \
444 va_arg(args, void*); \
445 SPA_FALLTHROUGH \
446 case 'b': \
447 case 'I': \
448 case 'i': \
449 case 'l': \
450 case 'f': \
451 case 'd': \
452 case 's': \
453 case 'R': \
454 case 'F': \
455 case 'B': \
456 case 'h': \
457 case 'V': \
458 case 'P': \
459 case 'T': \
460 case 'O': \
461 va_arg(args, void*); \
462 break; \
463 } \
464} while(false)
465
466static inline int spa_pod_parser_getv(struct spa_pod_parser *parser, va_list args)
467{
468 struct spa_pod_frame *f = parser->state.frame;
469 uint32_t ftype = f ? f->pod.type : (uint32_t)SPA_TYPE_Struct;
470 const struct spa_pod_prop *prop = NULL;
471 int count = 0;
472
473 do {
474 bool optional;
475 const struct spa_pod *pod = NULL;
476 const char *format;
477
478 if (ftype == SPA_TYPE_Object) {
479 uint32_t key = va_arg(args, uint32_t);
480 const struct spa_pod_object *object;
481
482 if (key == 0)
483 break;
484
485 object = (const struct spa_pod_object *)spa_pod_parser_frame(parser, f);
486 prop = spa_pod_object_find_prop(object, prop, key);
487 pod = prop ? &prop->value : NULL;
488 }
489
490 if ((format = va_arg(args, char *)) == NULL)
491 break;
492
493 if (ftype == SPA_TYPE_Struct)
494 pod = spa_pod_parser_next(parser);
495
496 if ((optional = (*format == '?')))
497 format++;
498
499 if (!spa_pod_parser_can_collect(pod, *format)) {
500 if (!optional) {
501 if (pod == NULL)
502 return -ESRCH;
503 else
504 return -EPROTO;
505 }
506 SPA_POD_PARSER_SKIP(*format, args);
507 } else {
508 if (pod->type == SPA_TYPE_Choice && *format != 'V')
509 pod = SPA_POD_CHOICE_CHILD(pod);
510
511 SPA_POD_PARSER_COLLECT(pod, *format, args);
512 count++;
513 }
514 } while (true);
515
516 return count;
517}
518
519static inline int spa_pod_parser_get(struct spa_pod_parser *parser, ...)
520{
521 int res;
522 va_list args;
523
524 va_start(args, parser);
525 res = spa_pod_parser_getv(parser, args);
526 va_end(args);
527
528 return res;
529}
530
531#define SPA_POD_OPT_Bool(val) "?" SPA_POD_Bool(val)
532#define SPA_POD_OPT_Id(val) "?" SPA_POD_Id(val)
533#define SPA_POD_OPT_Int(val) "?" SPA_POD_Int(val)
534#define SPA_POD_OPT_Long(val) "?" SPA_POD_Long(val)
535#define SPA_POD_OPT_Float(val) "?" SPA_POD_Float(val)
536#define SPA_POD_OPT_Double(val) "?" SPA_POD_Double(val)
537#define SPA_POD_OPT_String(val) "?" SPA_POD_String(val)
538#define SPA_POD_OPT_Stringn(val,len) "?" SPA_POD_Stringn(val,len)
539#define SPA_POD_OPT_Bytes(val,len) "?" SPA_POD_Bytes(val,len)
540#define SPA_POD_OPT_Rectangle(val) "?" SPA_POD_Rectangle(val)
541#define SPA_POD_OPT_Fraction(val) "?" SPA_POD_Fraction(val)
542#define SPA_POD_OPT_Array(csize,ctype,n_vals,vals) "?" SPA_POD_Array(csize,ctype,n_vals,vals)
543#define SPA_POD_OPT_Pointer(type,val) "?" SPA_POD_Pointer(type,val)
544#define SPA_POD_OPT_Fd(val) "?" SPA_POD_Fd(val)
545#define SPA_POD_OPT_Pod(val) "?" SPA_POD_Pod(val)
546#define SPA_POD_OPT_PodObject(val) "?" SPA_POD_PodObject(val)
547#define SPA_POD_OPT_PodStruct(val) "?" SPA_POD_PodStruct(val)
548#define SPA_POD_OPT_PodChoice(val) "?" SPA_POD_PodChoice(val)
549
550#define spa_pod_parser_get_object(p,type,id,...) \
551({ \
552 struct spa_pod_frame _f; \
553 int _res; \
554 if ((_res = spa_pod_parser_push_object(p, &_f, type, id)) == 0) { \
555 _res = spa_pod_parser_get(p,##__VA_ARGS__, 0); \
556 spa_pod_parser_pop(p, &_f); \
557 } \
558 _res; \
559})
560
561#define spa_pod_parser_get_struct(p,...) \
562({ \
563 struct spa_pod_frame _f; \
564 int _res; \
565 if ((_res = spa_pod_parser_push_struct(p, &_f)) == 0) { \
566 _res = spa_pod_parser_get(p,##__VA_ARGS__, NULL); \
567 spa_pod_parser_pop(p, &_f); \
568 } \
569 _res; \
570})
571
572#define spa_pod_parse_object(pod,type,id,...) \
573({ \
574 struct spa_pod_parser _p; \
575 spa_pod_parser_pod(&_p, pod); \
576 spa_pod_parser_get_object(&_p,type,id,##__VA_ARGS__); \
577})
578
579#define spa_pod_parse_struct(pod,...) \
580({ \
581 struct spa_pod_parser _p; \
582 spa_pod_parser_pod(&_p, pod); \
583 spa_pod_parser_get_struct(&_p,##__VA_ARGS__); \
584})
585
590#ifdef __cplusplus
591} /* extern "C" */
592#endif
593
594#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:195
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:186
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:213
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:525
spa_pod_parser_current
static struct spa_pod * spa_pod_parser_current(struct spa_pod_parser *parser)
Definition: parser.h:122
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_TYPE
#define SPA_POD_TYPE(pod)
Definition: pod/pod.h:48
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:177
SPA_POD_BODY_SIZE
#define SPA_POD_BODY_SIZE(pod)
Definition: pod/pod.h:46
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:168
spa_pod_parser_get_pod
static int spa_pod_parser_get_pod(struct spa_pod_parser *parser, struct spa_pod **value)
Definition: parser.h:258
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:267
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:355
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:204
spa_pod_parser_get_rectangle
static int spa_pod_parser_get_rectangle(struct spa_pod_parser *parser, struct spa_rectangle *value)
Definition: parser.h:240
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:280
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:437
spa_pod_parser_next
static struct spa_pod * spa_pod_parser_next(struct spa_pod_parser *parser)
Definition: parser.h:134
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:129
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:112
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:150
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:231
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:222
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:107
SPA_POD_OBJECT_TYPE
#define SPA_POD_OBJECT_TYPE(obj)
Definition: pod/pod.h:193
SPA_POD_OBJECT_ID
#define SPA_POD_OBJECT_ID(obj)
Definition: pod/pod.h:195
spa_pod_parser_getv
static int spa_pod_parser_getv(struct spa_pod_parser *parser, va_list args)
Definition: parser.h:472
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:159
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:297
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/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:249
spa_pod_parser_pop
static int spa_pod_parser_pop(struct spa_pod_parser *parser, struct spa_pod_frame *frame)
Definition: parser.h:142
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/pod.h:152
SPA_POD_CHOICE_TYPE
#define SPA_POD_CHOICE_TYPE(choice)
Definition: pod/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/pod.h:167
SPA_TYPE_Object
@ SPA_TYPE_Object
Definition: spa/include/spa/utils/type.h:65
SPA_TYPE_Choice
@ SPA_TYPE_Choice
Definition: spa/include/spa/utils/type.h:69
SPA_TYPE_Struct
@ SPA_TYPE_Struct
Definition: spa/include/spa/utils/type.h:64
SPA_ROUND_UP_N
#define SPA_ROUND_UP_N(num, align)
Definition: defs.h:336
SPA_IS_ALIGNED
#define SPA_IS_ALIGNED(p, align)
Definition: defs.h:349
SPA_PTROFF
#define SPA_PTROFF(ptr_, offset_, type_)
Return the address (buffer + offset) as pointer of type.
Definition: defs.h:210
iter.h
spa/pod/iter.h
spa_fraction
Definition: defs.h:139
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/pod.h:203
spa_pod_object::pod
struct spa_pod pod
Definition: pod/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/pod.h:228
spa_pod_prop::value
struct spa_pod value
Definition: pod/pod.h:246
spa_pod_struct
Definition: pod/pod.h:187
spa_pod
Definition: pod/pod.h:63
spa_pod::type
uint32_t type
Definition: pod/pod.h:65
spa_pod::size
uint32_t size
Definition: pod/pod.h:64
spa_rectangle
Definition: defs.h:118
vararg.h
spa/pod/vararg.h