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hook: add option to call hook with return value

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This commit is contained in:
Wim Taymans 2019-05-14 18:04:34 +02:00
parent 674f3e197e
commit e6c42d3324
1 changed files with 13 additions and 4 deletions
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17
spa/include/spa/utils/hook.h
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@ -53,6 +53,8 @@ struct spa_hook {
}; };
#define SPA_HOOK_INIT(_funcs,_data) (struct spa_hook){ .funcs = _funcs, .data = _data, }
/** Initialize a hook list */ /** Initialize a hook list */
static inline void spa_hook_list_init(struct spa_hook_list *list) static inline void spa_hook_list_init(struct spa_hook_list *list)
{ {
@ -110,10 +112,17 @@ spa_hook_list_join(struct spa_hook_list *list,
#define spa_hook_call(hook,type,method,vers,...) \ #define spa_hook_call(hook,type,method,vers,...) \
({ \ ({ \
const type *cb = hook->funcs; \ const type *cb = (hook)->funcs; \
if (cb && cb->version >= vers && cb->method) { \ if (cb && cb->version >= vers && cb->method) \
cb->method(hook->data, ## __VA_ARGS__); \ cb->method((hook)->data, ## __VA_ARGS__); \
} \ })
#define spa_hook_call_res(hook,type,res,method,vers,...) \
({ \
const type *cb = (hook)->funcs; \
if (cb && cb->version >= vers && cb->method) \
res = cb->method((hook)->data, ## __VA_ARGS__); \
res; \
}) })
#define spa_hook_list_call_simple(l,type,method,vers,...) \ #define spa_hook_list_call_simple(l,type,method,vers,...) \