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hook: separate spa_callbacks from the hook

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Make a spa_callbacks with just the functions and data and use this
in the hook and objects.
This commit is contained in:
Wim Taymans 2019-05-15 12:17:52 +02:00
parent 6ee192dff5
commit 448c1937ad
28 changed files with 97 additions and 84 deletions
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45
spa/include/spa/utils/hook.h
View file

@ -42,19 +42,26 @@ struct spa_hook_list {
struct spa_list list;
};
/** Callbacks, contains the structure with functions and the data passed
* to the functions. The structure should also contain a version field that
* is checked. */
struct spa_callbacks {
const void *funcs;
void *data;
};
#define SPA_CALLBACKS_INIT(_funcs,_data) (struct spa_callbacks){ _funcs, _data, }
/** A hook, contains the structure with functions and the data passed
* to the functions. */
struct spa_hook {
struct spa_list link;
const void *funcs;
void *data;
struct spa_callbacks cb;
void *priv; /**< private data for the hook list */
void (*removed) (struct spa_hook *hook);
};
#define SPA_HOOK_INIT(_funcs,_data) (struct spa_hook){ .funcs = _funcs, .data = _data, }
/** Initialize a hook list */
static inline void spa_hook_list_init(struct spa_hook_list *list)
{
@ -66,8 +73,7 @@ static inline void spa_hook_list_append(struct spa_hook_list *list,
struct spa_hook *hook,
const void *funcs, void *data)
{
hook->funcs = funcs;
hook->data = data;
hook->cb = SPA_CALLBACKS_INIT(funcs, data);
spa_list_append(&list->list, &hook->link);
}
@ -76,8 +82,7 @@ static inline void spa_hook_list_prepend(struct spa_hook_list *list,
struct spa_hook *hook,
const void *funcs, void *data)
{
hook->funcs = funcs;
hook->data = data;
hook->cb = SPA_CALLBACKS_INIT(funcs, data);
spa_list_prepend(&list->list, &hook->link);
}
@ -110,18 +115,18 @@ spa_hook_list_join(struct spa_hook_list *list,
spa_list_insert_list(&list->list, &save->list);
}
#define spa_hook_call(hook,type,method,vers,...) \
#define spa_callbacks_call(callbacks,type,method,vers,...) \
({ \
const type *cb = (const type *) (hook)->funcs; \
if (cb && cb->version >= vers && cb->method) \
cb->method((hook)->data, ## __VA_ARGS__); \
const type *_f = (const type *) (callbacks)->funcs; \
if (_f && _f->version >= (vers) && _f->method) \
_f->method((callbacks)->data, ## __VA_ARGS__); \
})
#define spa_hook_call_res(hook,type,res,method,vers,...) \
#define spa_callbacks_call_res(callbacks,type,res,method,vers,...) \
({ \
const type *cb = (const type *) (hook)->funcs; \
if (cb && cb->version >= vers && cb->method) \
res = cb->method((hook)->data, ## __VA_ARGS__); \
const type *_f = (const type *) (callbacks)->funcs; \
if (_f && _f->version >= (vers) && _f->method) \
res = _f->method((callbacks)->data, ## __VA_ARGS__); \
res; \
})
@ -130,7 +135,7 @@ spa_hook_list_join(struct spa_hook_list *list,
struct spa_hook_list *_l = l; \
struct spa_hook *_h, *_t; \
spa_list_for_each_safe(_h, _t, &_l->list, link) \
spa_hook_call(_h,type,method,vers, ## __VA_ARGS__); \
spa_callbacks_call(&_h->cb,type,method,vers, ## __VA_ARGS__); \
})
/** Call all hooks in a list, starting from the given one and optionally stopping
@ -144,9 +149,9 @@ spa_hook_list_join(struct spa_hook_list *list,
int count = 0; \
spa_list_cursor_start(cursor, s, link); \
spa_list_for_each_cursor(ci, cursor, &list->list, link) { \
const type *cb = (const type *)ci->funcs; \
if (cb && cb->version >= vers && cb->method) { \
cb->method(ci->data, ## __VA_ARGS__); \
const type *_f = (const type *)ci->cb.funcs; \
if (_f && _f->version >= (vers) && _f->method) { \
_f->method(ci->cb.data, ## __VA_ARGS__); \
count++; \
if (once) \
break; \