PipeWire  0.3.61
iter.h
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1 /* Simple Plugin API
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
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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_ITER_H
26 #define SPA_POD_ITER_H
27 
28 #ifdef __cplusplus
29 extern "C" {
30 #endif
31 
32 #include <errno.h>
33 #include <sys/types.h>
34 
35 #include <spa/pod/pod.h>
36 
42 struct spa_pod_frame {
43  struct spa_pod pod;
44  struct spa_pod_frame *parent;
45  uint32_t offset;
46  uint32_t flags;
47 };
48 
49 static inline bool spa_pod_is_inside(const void *pod, uint32_t size, const void *iter)
50 {
51  return SPA_POD_BODY(iter) <= SPA_PTROFF(pod, size, void) &&
52  SPA_PTROFF(iter, SPA_POD_SIZE(iter), void) <= SPA_PTROFF(pod, size, void);
53 }
54 
55 static inline void *spa_pod_next(const void *iter)
56 {
57  return SPA_PTROFF(iter, SPA_ROUND_UP_N(SPA_POD_SIZE(iter), 8), void);
58 }
59 
60 static inline struct spa_pod_prop *spa_pod_prop_first(const struct spa_pod_object_body *body)
61 {
62  return SPA_PTROFF(body, sizeof(struct spa_pod_object_body), struct spa_pod_prop);
63 }
64 
65 static inline bool spa_pod_prop_is_inside(const struct spa_pod_object_body *body,
66  uint32_t size, const struct spa_pod_prop *iter)
67 {
68  return SPA_POD_CONTENTS(struct spa_pod_prop, iter) <= SPA_PTROFF(body, size, void) &&
69  SPA_PTROFF(iter, SPA_POD_PROP_SIZE(iter), void) <= SPA_PTROFF(body, size, void);
70 }
71 
72 static inline struct spa_pod_prop *spa_pod_prop_next(const struct spa_pod_prop *iter)
73 {
74  return SPA_PTROFF(iter, SPA_ROUND_UP_N(SPA_POD_PROP_SIZE(iter), 8), struct spa_pod_prop);
75 }
76 
77 static inline struct spa_pod_control *spa_pod_control_first(const struct spa_pod_sequence_body *body)
78 {
79  return SPA_PTROFF(body, sizeof(struct spa_pod_sequence_body), struct spa_pod_control);
80 }
81 
82 static inline bool spa_pod_control_is_inside(const struct spa_pod_sequence_body *body,
83  uint32_t size, const struct spa_pod_control *iter)
84 {
85  return SPA_POD_CONTENTS(struct spa_pod_control, iter) <= SPA_PTROFF(body, size, void) &&
86  SPA_PTROFF(iter, SPA_POD_CONTROL_SIZE(iter), void) <= SPA_PTROFF(body, size, void);
87 }
88 
89 static inline struct spa_pod_control *spa_pod_control_next(const struct spa_pod_control *iter)
90 {
91  return SPA_PTROFF(iter, SPA_ROUND_UP_N(SPA_POD_CONTROL_SIZE(iter), 8), struct spa_pod_control);
92 }
93 
94 #define SPA_POD_ARRAY_BODY_FOREACH(body, _size, iter) \
95  for ((iter) = (__typeof__(iter))SPA_PTROFF((body), sizeof(struct spa_pod_array_body), void); \
96  (iter) < (__typeof__(iter))SPA_PTROFF((body), (_size), void); \
97  (iter) = (__typeof__(iter))SPA_PTROFF((iter), (body)->child.size, void))
98 
99 #define SPA_POD_ARRAY_FOREACH(obj, iter) \
100  SPA_POD_ARRAY_BODY_FOREACH(&(obj)->body, SPA_POD_BODY_SIZE(obj), iter)
101 
102 #define SPA_POD_CHOICE_BODY_FOREACH(body, _size, iter) \
103  for ((iter) = (__typeof__(iter))SPA_PTROFF((body), sizeof(struct spa_pod_choice_body), void); \
104  (iter) < (__typeof__(iter))SPA_PTROFF((body), (_size), void); \
105  (iter) = (__typeof__(iter))SPA_PTROFF((iter), (body)->child.size, void))
106 
107 #define SPA_POD_CHOICE_FOREACH(obj, iter) \
108  SPA_POD_CHOICE_BODY_FOREACH(&(obj)->body, SPA_POD_BODY_SIZE(obj), iter)
109 
110 #define SPA_POD_FOREACH(pod, size, iter) \
111  for ((iter) = (pod); \
112  spa_pod_is_inside(pod, size, iter); \
113  (iter) = (__typeof__(iter))spa_pod_next(iter))
114 
115 #define SPA_POD_STRUCT_FOREACH(obj, iter) \
116  SPA_POD_FOREACH(SPA_POD_BODY(obj), SPA_POD_BODY_SIZE(obj), iter)
117 
118 #define SPA_POD_OBJECT_BODY_FOREACH(body, size, iter) \
119  for ((iter) = spa_pod_prop_first(body); \
120  spa_pod_prop_is_inside(body, size, iter); \
121  (iter) = spa_pod_prop_next(iter))
122 
123 #define SPA_POD_OBJECT_FOREACH(obj, iter) \
124  SPA_POD_OBJECT_BODY_FOREACH(&(obj)->body, SPA_POD_BODY_SIZE(obj), iter)
125 
126 #define SPA_POD_SEQUENCE_BODY_FOREACH(body, size, iter) \
127  for ((iter) = spa_pod_control_first(body); \
128  spa_pod_control_is_inside(body, size, iter); \
129  (iter) = spa_pod_control_next(iter))
130 
131 #define SPA_POD_SEQUENCE_FOREACH(seq, iter) \
132  SPA_POD_SEQUENCE_BODY_FOREACH(&(seq)->body, SPA_POD_BODY_SIZE(seq), iter)
133 
134 
135 static inline void *spa_pod_from_data(void *data, size_t maxsize, off_t offset, size_t size)
136 {
137  void *pod;
138  if (size < sizeof(struct spa_pod) || offset + size > maxsize)
139  return NULL;
140  pod = SPA_PTROFF(data, offset, void);
141  if (SPA_POD_SIZE(pod) > size)
142  return NULL;
143  return pod;
144 }
145 
146 static inline int spa_pod_is_none(const struct spa_pod *pod)
147 {
148  return (SPA_POD_TYPE(pod) == SPA_TYPE_None);
149 }
150 
151 static inline int spa_pod_is_bool(const struct spa_pod *pod)
152 {
153  return (SPA_POD_TYPE(pod) == SPA_TYPE_Bool && SPA_POD_BODY_SIZE(pod) >= sizeof(int32_t));
154 }
155 
156 static inline int spa_pod_get_bool(const struct spa_pod *pod, bool *value)
157 {
158  if (!spa_pod_is_bool(pod))
159  return -EINVAL;
160  *value = !!SPA_POD_VALUE(struct spa_pod_bool, pod);
161  return 0;
162 }
163 
164 static inline int spa_pod_is_id(const struct spa_pod *pod)
165 {
166  return (SPA_POD_TYPE(pod) == SPA_TYPE_Id && SPA_POD_BODY_SIZE(pod) >= sizeof(uint32_t));
167 }
168 
169 static inline int spa_pod_get_id(const struct spa_pod *pod, uint32_t *value)
170 {
171  if (!spa_pod_is_id(pod))
172  return -EINVAL;
173  *value = SPA_POD_VALUE(struct spa_pod_id, pod);
174  return 0;
175 }
176 
177 static inline int spa_pod_is_int(const struct spa_pod *pod)
178 {
179  return (SPA_POD_TYPE(pod) == SPA_TYPE_Int && SPA_POD_BODY_SIZE(pod) >= sizeof(int32_t));
180 }
181 
182 static inline int spa_pod_get_int(const struct spa_pod *pod, int32_t *value)
183 {
184  if (!spa_pod_is_int(pod))
185  return -EINVAL;
186  *value = SPA_POD_VALUE(struct spa_pod_int, pod);
187  return 0;
188 }
189 
190 static inline int spa_pod_is_long(const struct spa_pod *pod)
191 {
192  return (SPA_POD_TYPE(pod) == SPA_TYPE_Long && SPA_POD_BODY_SIZE(pod) >= sizeof(int64_t));
193 }
194 
195 static inline int spa_pod_get_long(const struct spa_pod *pod, int64_t *value)
196 {
197  if (!spa_pod_is_long(pod))
198  return -EINVAL;
199  *value = SPA_POD_VALUE(struct spa_pod_long, pod);
200  return 0;
201 }
202 
203 static inline int spa_pod_is_float(const struct spa_pod *pod)
204 {
205  return (SPA_POD_TYPE(pod) == SPA_TYPE_Float && SPA_POD_BODY_SIZE(pod) >= sizeof(float));
206 }
207 
208 static inline int spa_pod_get_float(const struct spa_pod *pod, float *value)
209 {
210  if (!spa_pod_is_float(pod))
211  return -EINVAL;
212  *value = SPA_POD_VALUE(struct spa_pod_float, pod);
213  return 0;
214 }
215 
216 static inline int spa_pod_is_double(const struct spa_pod *pod)
217 {
218  return (SPA_POD_TYPE(pod) == SPA_TYPE_Double && SPA_POD_BODY_SIZE(pod) >= sizeof(double));
219 }
220 
221 static inline int spa_pod_get_double(const struct spa_pod *pod, double *value)
222 {
223  if (!spa_pod_is_double(pod))
224  return -EINVAL;
225  *value = SPA_POD_VALUE(struct spa_pod_double, pod);
226  return 0;
227 }
228 
229 static inline int spa_pod_is_string(const struct spa_pod *pod)
230 {
231  const char *s = (const char *)SPA_POD_CONTENTS(struct spa_pod_string, pod);
232  return (SPA_POD_TYPE(pod) == SPA_TYPE_String &&
233  SPA_POD_BODY_SIZE(pod) > 0 &&
234  s[SPA_POD_BODY_SIZE(pod)-1] == '\0');
235 }
236 
237 static inline int spa_pod_get_string(const struct spa_pod *pod, const char **value)
238 {
239  if (!spa_pod_is_string(pod))
240  return -EINVAL;
241  *value = (const char *)SPA_POD_CONTENTS(struct spa_pod_string, pod);
242  return 0;
243 }
244 
245 static inline int spa_pod_copy_string(const struct spa_pod *pod, size_t maxlen, char *dest)
246 {
247  const char *s = (const char *)SPA_POD_CONTENTS(struct spa_pod_string, pod);
248  if (!spa_pod_is_string(pod) || maxlen < 1)
249  return -EINVAL;
250  strncpy(dest, s, maxlen-1);
251  dest[maxlen-1]= '\0';
252  return 0;
253 }
254 
255 static inline int spa_pod_is_bytes(const struct spa_pod *pod)
256 {
257  return SPA_POD_TYPE(pod) == SPA_TYPE_Bytes;
258 }
259 
260 static inline int spa_pod_get_bytes(const struct spa_pod *pod, const void **value, uint32_t *len)
261 {
262  if (!spa_pod_is_bytes(pod))
263  return -EINVAL;
264  *value = (const void *)SPA_POD_CONTENTS(struct spa_pod_bytes, pod);
265  *len = SPA_POD_BODY_SIZE(pod);
266  return 0;
267 }
268 
269 static inline int spa_pod_is_pointer(const struct spa_pod *pod)
270 {
271  return (SPA_POD_TYPE(pod) == SPA_TYPE_Pointer &&
272  SPA_POD_BODY_SIZE(pod) >= sizeof(struct spa_pod_pointer_body));
273 }
274 
275 static inline int spa_pod_get_pointer(const struct spa_pod *pod, uint32_t *type, const void **value)
276 {
277  if (!spa_pod_is_pointer(pod))
278  return -EINVAL;
279  *type = ((struct spa_pod_pointer*)pod)->body.type;
280  *value = ((struct spa_pod_pointer*)pod)->body.value;
281  return 0;
282 }
283 
284 static inline int spa_pod_is_fd(const struct spa_pod *pod)
285 {
286  return (SPA_POD_TYPE(pod) == SPA_TYPE_Fd &&
287  SPA_POD_BODY_SIZE(pod) >= sizeof(int64_t));
288 }
289 
290 static inline int spa_pod_get_fd(const struct spa_pod *pod, int64_t *value)
291 {
292  if (!spa_pod_is_fd(pod))
293  return -EINVAL;
294  *value = SPA_POD_VALUE(struct spa_pod_fd, pod);
295  return 0;
296 }
297 
298 static inline int spa_pod_is_rectangle(const struct spa_pod *pod)
299 {
300  return (SPA_POD_TYPE(pod) == SPA_TYPE_Rectangle &&
301  SPA_POD_BODY_SIZE(pod) >= sizeof(struct spa_rectangle));
302 }
303 
304 static inline int spa_pod_get_rectangle(const struct spa_pod *pod, struct spa_rectangle *value)
305 {
307  return -EINVAL;
308  *value = SPA_POD_VALUE(struct spa_pod_rectangle, pod);
309  return 0;
310 }
311 
312 static inline int spa_pod_is_fraction(const struct spa_pod *pod)
313 {
314  return (SPA_POD_TYPE(pod) == SPA_TYPE_Fraction &&
315  SPA_POD_BODY_SIZE(pod) >= sizeof(struct spa_fraction));
316 }
317 
318 static inline int spa_pod_get_fraction(const struct spa_pod *pod, struct spa_fraction *value)
319 {
321  *value = SPA_POD_VALUE(struct spa_pod_fraction, pod);
322  return 0;
323 }
324 
325 static inline int spa_pod_is_bitmap(const struct spa_pod *pod)
326 {
327  return (SPA_POD_TYPE(pod) == SPA_TYPE_Bitmap &&
328  SPA_POD_BODY_SIZE(pod) >= sizeof(uint8_t));
329 }
330 
331 static inline int spa_pod_is_array(const struct spa_pod *pod)
332 {
333  return (SPA_POD_TYPE(pod) == SPA_TYPE_Array &&
334  SPA_POD_BODY_SIZE(pod) >= sizeof(struct spa_pod_array_body));
335 }
336 
337 static inline void *spa_pod_get_array(const struct spa_pod *pod, uint32_t *n_values)
338 {
340  *n_values = SPA_POD_ARRAY_N_VALUES(pod);
341  return SPA_POD_ARRAY_VALUES(pod);
342 }
343 
344 static inline uint32_t spa_pod_copy_array(const struct spa_pod *pod, uint32_t type,
345  void *values, uint32_t max_values)
346 {
347  uint32_t n_values;
348  void *v = spa_pod_get_array(pod, &n_values);
349  if (v == NULL || max_values == 0 || SPA_POD_ARRAY_VALUE_TYPE(pod) != type)
350  return 0;
351  n_values = SPA_MIN(n_values, max_values);
352  memcpy(values, v, SPA_POD_ARRAY_VALUE_SIZE(pod) * n_values);
353  return n_values;
354 }
355 
356 static inline int spa_pod_is_choice(const struct spa_pod *pod)
357 {
358  return (SPA_POD_TYPE(pod) == SPA_TYPE_Choice &&
359  SPA_POD_BODY_SIZE(pod) >= sizeof(struct spa_pod_choice_body));
360 }
361 
362 static inline struct spa_pod *spa_pod_get_values(const struct spa_pod *pod, uint32_t *n_vals, uint32_t *choice)
363 {
364  if (pod->type == SPA_TYPE_Choice) {
365  *n_vals = SPA_POD_CHOICE_N_VALUES(pod);
366  if ((*choice = SPA_POD_CHOICE_TYPE(pod)) == SPA_CHOICE_None)
367  *n_vals = SPA_MIN(1u, SPA_POD_CHOICE_N_VALUES(pod));
368  return (struct spa_pod*)SPA_POD_CHOICE_CHILD(pod);
369  } else {
370  *n_vals = 1;
371  *choice = SPA_CHOICE_None;
372  return (struct spa_pod*)pod;
373  }
374 }
375 
376 static inline int spa_pod_is_struct(const struct spa_pod *pod)
377 {
378  return (SPA_POD_TYPE(pod) == SPA_TYPE_Struct);
379 }
380 
381 static inline int spa_pod_is_object(const struct spa_pod *pod)
382 {
383  return (SPA_POD_TYPE(pod) == SPA_TYPE_Object &&
384  SPA_POD_BODY_SIZE(pod) >= sizeof(struct spa_pod_object_body));
385 }
386 
387 static inline bool spa_pod_is_object_type(const struct spa_pod *pod, uint32_t type)
388 {
389  return (pod && spa_pod_is_object(pod) && SPA_POD_OBJECT_TYPE(pod) == type);
390 }
391 
392 static inline bool spa_pod_is_object_id(const struct spa_pod *pod, uint32_t id)
393 {
394  return (pod && spa_pod_is_object(pod) && SPA_POD_OBJECT_ID(pod) == id);
395 }
396 
397 static inline int spa_pod_is_sequence(const struct spa_pod *pod)
398 {
399  return (SPA_POD_TYPE(pod) == SPA_TYPE_Sequence &&
400  SPA_POD_BODY_SIZE(pod) >= sizeof(struct spa_pod_sequence_body));
401 }
402 
403 static inline const struct spa_pod_prop *spa_pod_object_find_prop(const struct spa_pod_object *pod,
404  const struct spa_pod_prop *start, uint32_t key)
405 {
406  const struct spa_pod_prop *first, *res;
407 
408  first = spa_pod_prop_first(&pod->body);
409  start = start ? spa_pod_prop_next(start) : first;
410 
411  for (res = start; spa_pod_prop_is_inside(&pod->body, pod->pod.size, res);
412  res = spa_pod_prop_next(res)) {
413  if (res->key == key)
414  return res;
415  }
416  for (res = first; res != start; res = spa_pod_prop_next(res)) {
417  if (res->key == key)
418  return res;
419  }
420  return NULL;
421 }
422 
423 static inline const struct spa_pod_prop *spa_pod_find_prop(const struct spa_pod *pod,
424  const struct spa_pod_prop *start, uint32_t key)
425 {
426  if (!spa_pod_is_object(pod))
427  return NULL;
428  return spa_pod_object_find_prop((const struct spa_pod_object *)pod, start, key);
429 }
430 
431 static inline int spa_pod_object_fixate(struct spa_pod_object *pod)
432 {
433  struct spa_pod_prop *res;
434  SPA_POD_OBJECT_FOREACH(pod, res) {
435  if (res->value.type == SPA_TYPE_Choice &&
437  ((struct spa_pod_choice*)&res->value)->body.type = SPA_CHOICE_None;
438  }
439  return 0;
440 }
441 
442 static inline int spa_pod_fixate(struct spa_pod *pod)
443 {
444  if (!spa_pod_is_object(pod))
445  return -EINVAL;
446  return spa_pod_object_fixate((struct spa_pod_object *)pod);
447 }
448 
449 static inline int spa_pod_object_is_fixated(const struct spa_pod_object *pod)
450 {
451  struct spa_pod_prop *res;
452  SPA_POD_OBJECT_FOREACH(pod, res) {
453  if (res->value.type == SPA_TYPE_Choice &&
454  ((struct spa_pod_choice*)&res->value)->body.type != SPA_CHOICE_None)
455  return 0;
456  }
457  return 1;
458 }
459 
460 static inline int spa_pod_is_fixated(const struct spa_pod *pod)
461 {
462  if (!spa_pod_is_object(pod))
463  return -EINVAL;
464  return spa_pod_object_is_fixated((const struct spa_pod_object *)pod);
465 }
466 
471 #ifdef __cplusplus
472 } /* extern "C" */
473 #endif
474 
475 #endif /* SPA_POD_H */
static int spa_pod_is_bitmap(const struct spa_pod *pod)
Definition: iter.h:330
static struct spa_pod_control * spa_pod_control_first(const struct spa_pod_sequence_body *body)
Definition: iter.h:82
static int spa_pod_get_int(const struct spa_pod *pod, int32_t *value)
Definition: iter.h:187
static int spa_pod_is_long(const struct spa_pod *pod)
Definition: iter.h:195
static int spa_pod_is_bytes(const struct spa_pod *pod)
Definition: iter.h:260
static struct spa_pod_prop * spa_pod_prop_next(const struct spa_pod_prop *iter)
Definition: iter.h:77
static int spa_pod_fixate(struct spa_pod *pod)
Definition: iter.h:447
static struct spa_pod * spa_pod_get_values(const struct spa_pod *pod, uint32_t *n_vals, uint32_t *choice)
Definition: iter.h:367
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
static int spa_pod_get_pointer(const struct spa_pod *pod, uint32_t *type, const void **value)
Definition: iter.h:280
static bool spa_pod_control_is_inside(const struct spa_pod_sequence_body *body, uint32_t size, const struct spa_pod_control *iter)
Definition: iter.h:87
#define SPA_POD_VALUE(type, pod)
Definition: pod.h:69
static int spa_pod_get_fraction(const struct spa_pod *pod, struct spa_fraction *value)
Definition: iter.h:323
static int spa_pod_is_rectangle(const struct spa_pod *pod)
Definition: iter.h:303
static int spa_pod_is_fd(const struct spa_pod *pod)
Definition: iter.h:289
#define SPA_POD_OBJECT_FOREACH(obj, iter)
Definition: iter.h:128
#define SPA_POD_BODY(pod)
Definition: pod.h:59
static int spa_pod_is_pointer(const struct spa_pod *pod)
Definition: iter.h:274
#define SPA_POD_TYPE(pod)
Definition: pod.h:48
static void * spa_pod_from_data(void *data, size_t maxsize, off_t offset, size_t size)
Definition: iter.h:140
static int spa_pod_get_id(const struct spa_pod *pod, uint32_t *value)
Definition: iter.h:174
static bool spa_pod_is_object_id(const struct spa_pod *pod, uint32_t id)
Definition: iter.h:397
#define SPA_POD_BODY_SIZE(pod)
Definition: pod.h:46
static int spa_pod_get_float(const struct spa_pod *pod, float *value)
Definition: iter.h:213
static int spa_pod_copy_string(const struct spa_pod *pod, size_t maxlen, char *dest)
Definition: iter.h:250
static uint32_t spa_pod_copy_array(const struct spa_pod *pod, uint32_t type, void *values, uint32_t max_values)
Definition: iter.h:349
#define SPA_POD_PROP_FLAG_DONT_FIXATE
choices need no fixation
Definition: pod.h:244
static int spa_pod_object_fixate(struct spa_pod_object *pod)
Definition: iter.h:436
static bool spa_pod_is_inside(const void *pod, uint32_t size, const void *iter)
Definition: iter.h:54
static int spa_pod_is_object(const struct spa_pod *pod)
Definition: iter.h:386
static int spa_pod_get_rectangle(const struct spa_pod *pod, struct spa_rectangle *value)
Definition: iter.h:309
static int spa_pod_get_fd(const struct spa_pod *pod, int64_t *value)
Definition: iter.h:295
static int spa_pod_is_struct(const struct spa_pod *pod)
Definition: iter.h:381
static int spa_pod_is_sequence(const struct spa_pod *pod)
Definition: iter.h:402
#define SPA_POD_ARRAY_VALUE_SIZE(arr)
Definition: pod.h:135
static struct spa_pod_control * spa_pod_control_next(const struct spa_pod_control *iter)
Definition: iter.h:94
#define SPA_POD_CONTROL_SIZE(ev)
Definition: pod.h:251
static int spa_pod_get_long(const struct spa_pod *pod, int64_t *value)
Definition: iter.h:200
#define SPA_POD_CONTENTS(type, pod)
Definition: pod.h:55
static int spa_pod_is_string(const struct spa_pod *pod)
Definition: iter.h:234
static int spa_pod_is_fixated(const struct spa_pod *pod)
Definition: iter.h:465
static void * spa_pod_next(const void *iter)
Definition: iter.h:60
static void * spa_pod_get_array(const struct spa_pod *pod, uint32_t *n_values)
Definition: iter.h:342
static int spa_pod_is_choice(const struct spa_pod *pod)
Definition: iter.h:361
static int spa_pod_get_string(const struct spa_pod *pod, const char **value)
Definition: iter.h:242
#define SPA_POD_PROP_SIZE(prop)
Definition: pod.h:225
static int spa_pod_get_double(const struct spa_pod *pod, double *value)
Definition: iter.h:226
static const struct spa_pod_prop * spa_pod_find_prop(const struct spa_pod *pod, const struct spa_pod_prop *start, uint32_t key)
Definition: iter.h:428
static int spa_pod_get_bool(const struct spa_pod *pod, bool *value)
Definition: iter.h:161
#define SPA_POD_OBJECT_TYPE(obj)
Definition: pod.h:193
#define SPA_POD_OBJECT_ID(obj)
Definition: pod.h:195
static bool spa_pod_is_object_type(const struct spa_pod *pod, uint32_t type)
Definition: iter.h:392
#define SPA_POD_ARRAY_VALUE_TYPE(arr)
Definition: pod.h:133
static int spa_pod_is_array(const struct spa_pod *pod)
Definition: iter.h:336
static int spa_pod_is_id(const struct spa_pod *pod)
Definition: iter.h:169
static int spa_pod_is_double(const struct spa_pod *pod)
Definition: iter.h:221
#define SPA_POD_CHOICE_N_VALUES(choice)
Definition: pod.h:162
static int spa_pod_is_int(const struct spa_pod *pod)
Definition: iter.h:182
static int spa_pod_is_none(const struct spa_pod *pod)
Definition: iter.h:151
static struct spa_pod_prop * spa_pod_prop_first(const struct spa_pod_object_body *body)
Definition: iter.h:65
static int spa_pod_object_is_fixated(const struct spa_pod_object *pod)
Definition: iter.h:454
static int spa_pod_is_fraction(const struct spa_pod *pod)
Definition: iter.h:317
#define SPA_POD_SIZE(pod)
Definition: pod.h:50
static int spa_pod_is_float(const struct spa_pod *pod)
Definition: iter.h:208
#define SPA_POD_CHOICE_CHILD(choice)
Definition: pod.h:152
#define SPA_POD_ARRAY_N_VALUES(arr)
Definition: pod.h:137
#define SPA_POD_CHOICE_TYPE(choice)
Definition: pod.h:154
static int spa_pod_get_bytes(const struct spa_pod *pod, const void **value, uint32_t *len)
Definition: iter.h:265
#define SPA_POD_ARRAY_VALUES(arr)
Definition: pod.h:139
static int spa_pod_is_bool(const struct spa_pod *pod)
Definition: iter.h:156
static bool spa_pod_prop_is_inside(const struct spa_pod_object_body *body, uint32_t size, const struct spa_pod_prop *iter)
Definition: iter.h:70
@ SPA_CHOICE_None
no choice, first value is current
Definition: pod.h:167
@ SPA_TYPE_Int
Definition: type.h:54
@ SPA_TYPE_Rectangle
Definition: type.h:60
@ SPA_TYPE_Long
Definition: type.h:55
@ SPA_TYPE_Bool
Definition: type.h:52
@ SPA_TYPE_Bytes
Definition: type.h:59
@ SPA_TYPE_Bitmap
Definition: type.h:62
@ SPA_TYPE_Object
Definition: type.h:65
@ SPA_TYPE_Float
Definition: type.h:56
@ SPA_TYPE_Fraction
Definition: type.h:61
@ SPA_TYPE_None
Definition: type.h:51
@ SPA_TYPE_Sequence
Definition: type.h:66
@ SPA_TYPE_Double
Definition: type.h:57
@ SPA_TYPE_Id
Definition: type.h:53
@ SPA_TYPE_Choice
Definition: type.h:69
@ SPA_TYPE_Pointer
Definition: type.h:67
@ SPA_TYPE_Array
Definition: type.h:63
@ SPA_TYPE_String
Definition: type.h:58
@ SPA_TYPE_Fd
Definition: type.h:68
@ SPA_TYPE_Struct
Definition: type.h:64
#define SPA_MIN(a, b)
Definition: defs.h:167
#define SPA_ROUND_UP_N(num, align)
Definition: defs.h:336
#define spa_return_val_if_fail(expr, val)
Definition: defs.h:373
#define SPA_FLAG_IS_SET(field, flag)
Definition: defs.h:92
#define SPA_PTROFF(ptr_, offset_, type_)
Return the address (buffer + offset) as pointer of type.
Definition: defs.h:210
spa/pod/pod.h
Definition: defs.h:139
Definition: pod.h:141
Definition: pod.h:71
Definition: pod.h:110
Definition: pod.h:174
Definition: pod.h:182
struct spa_pod pod
Definition: pod.h:183
Definition: pod.h:254
struct spa_pod value
control value, depends on type
Definition: pod.h:257
uint32_t type
type of control, enum spa_control_type
Definition: pod.h:256
uint32_t offset
media offset
Definition: pod.h:255
Definition: pod.h:100
Definition: pod.h:219
Definition: pod.h:94
Definition: pod.h:120
Definition: iter.h:47
struct spa_pod pod
Definition: iter.h:48
uint32_t offset
Definition: iter.h:50
struct spa_pod_frame * parent
Definition: iter.h:49
uint32_t flags
Definition: iter.h:51
Definition: pod.h:77
Definition: pod.h:83
Definition: pod.h:89
Definition: pod.h:197
Definition: pod.h:203
struct spa_pod pod
Definition: pod.h:204
struct spa_pod_object_body body
Definition: pod.h:205
Definition: pod.h:208
Definition: pod.h:214
struct spa_pod pod
Definition: pod.h:215
Definition: pod.h:228
uint32_t key
key of property, list of valid keys depends on the object type
Definition: pod.h:229
uint32_t flags
flags for property
Definition: pod.h:245
struct spa_pod value
Definition: pod.h:246
Definition: pod.h:115
Definition: pod.h:261
Definition: pod.h:105
Definition: pod.h:63
uint32_t type
Definition: pod.h:65
uint32_t size
Definition: pod.h:64
Definition: defs.h:118