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pod: handle various ways of making empty array/choice

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Make it possible to make empty array/choice
Handle empty array/choice
Add some tests to make empty arrays/choice objects
This commit is contained in:
Wim Taymans 2021-01-25 10:53:55 +01:00
parent c913abffef
commit ebf324590b
4 changed files with 83 additions and 4 deletions
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4
spa/include/spa/pod/pod.h
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@ -111,7 +111,7 @@ struct spa_pod_bitmap {
#define SPA_POD_ARRAY_CHILD(arr) (&((struct spa_pod_array*)(arr))->body.child)
#define SPA_POD_ARRAY_VALUE_TYPE(arr) (SPA_POD_TYPE(SPA_POD_ARRAY_CHILD(arr)))
#define SPA_POD_ARRAY_VALUE_SIZE(arr) (SPA_POD_BODY_SIZE(SPA_POD_ARRAY_CHILD(arr)))
#define SPA_POD_ARRAY_N_VALUES(arr) ((SPA_POD_BODY_SIZE(arr) - sizeof(struct spa_pod_array_body)) / SPA_POD_ARRAY_VALUE_SIZE(arr))
#define SPA_POD_ARRAY_N_VALUES(arr) (SPA_POD_ARRAY_VALUE_SIZE(arr) ? ((SPA_POD_BODY_SIZE(arr) - sizeof(struct spa_pod_array_body)) / SPA_POD_ARRAY_VALUE_SIZE(arr)) : 0)
#define SPA_POD_ARRAY_VALUES(arr) SPA_POD_CONTENTS(struct spa_pod_array, arr)
struct spa_pod_array_body {
@ -129,7 +129,7 @@ struct spa_pod_array {
#define SPA_POD_CHOICE_FLAGS(choice) (((struct spa_pod_choice*)(choice))->body.flags)
#define SPA_POD_CHOICE_VALUE_TYPE(choice) (SPA_POD_TYPE(SPA_POD_CHOICE_CHILD(choice)))
#define SPA_POD_CHOICE_VALUE_SIZE(choice) (SPA_POD_BODY_SIZE(SPA_POD_CHOICE_CHILD(choice)))
#define SPA_POD_CHOICE_N_VALUES(choice) ((SPA_POD_BODY_SIZE(choice) - sizeof(struct spa_pod_choice_body)) / SPA_POD_CHOICE_VALUE_SIZE(choice))
#define SPA_POD_CHOICE_N_VALUES(choice) (SPA_POD_CHOICE_VALUE_SIZE(choice) ? ((SPA_POD_BODY_SIZE(choice) - sizeof(struct spa_pod_choice_body)) / SPA_POD_CHOICE_VALUE_SIZE(choice)) : 0)
#define SPA_POD_CHOICE_VALUES(choice) (SPA_POD_CONTENTS(struct spa_pod_choice, choice))
enum spa_choice_type {