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pod: add helper function to copy array values

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This commit is contained in:
Wim Taymans 2019-08-12 10:25:22 +02:00
parent b71f2dd716
commit a1ec7f5fa7
2 changed files with 21 additions and 7 deletions
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19
spa/include/spa/pod/iter.h
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@ -317,6 +317,25 @@ static inline int spa_pod_is_array(const struct spa_pod *pod)
SPA_POD_BODY_SIZE(pod) >= sizeof(struct spa_pod_array_body));
}
static inline void *spa_pod_get_array(const struct spa_pod *pod, uint32_t *n_values)
{
spa_return_val_if_fail(spa_pod_is_array(pod), NULL);
*n_values = SPA_POD_ARRAY_N_VALUES(pod);
return SPA_POD_ARRAY_VALUES(pod);
}
static inline uint32_t spa_pod_copy_array(const struct spa_pod *pod, uint32_t type,
void *values, uint32_t max_values)
{
uint32_t n_values;
void *v = spa_pod_get_array(pod, &n_values);
if (v == NULL || max_values == 0 || SPA_POD_ARRAY_VALUE_TYPE(pod) != type)
return 0;
n_values = SPA_MIN(n_values, max_values);
memcpy(values, v, SPA_POD_ARRAY_VALUE_SIZE(pod) * n_values);
return n_values;
}
static inline int spa_pod_is_choice(const struct spa_pod *pod)
{
return (SPA_POD_TYPE(pod) == SPA_TYPE_Choice &&