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#ifndef foopulseobjecthfoo
#define foopulseobjecthfoo
/***
This file is part of PulseAudio.
Copyright 2004-2006 Lennart Poettering
Copyright 2006 Pierre Ossman <ossman@cendio.se> for Cendio AB
PulseAudio is free software; you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published
by the Free Software Foundation; either version 2 of the License,
or (at your option) any later version.
PulseAudio is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with PulseAudio; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
USA.
***/
#include <string.h>
#include <sys/types.h>
#include <pulse/xmalloc.h>
#include <pulsecore/refcnt.h>
#include <pulsecore/macro.h>
typedef struct pa_object pa_object;
struct pa_object {
PA_REFCNT_DECLARE;
const char *type_name;
void (*free)(pa_object *o);
int (*check_type)(const char *type_name);
};
pa_object *pa_object_new_internal(size_t size, const char *type_name, int (*check_type)(const char *type_name));
#define pa_object_new(type) ((type*) pa_object_new_internal(sizeof(type), #type, type##_check_type)
#define pa_object_free ((void (*) (pa_object* o)) pa_xfree)
int pa_object_check_type(const char *type);
static inline int pa_object_isinstance(void *o) {
pa_object *obj = (pa_object*) o;
return obj ? obj->check_type("pa_object") : 0;
}
pa_object *pa_object_ref(pa_object *o);
void pa_object_unref(pa_object *o);
static inline int pa_object_refcnt(pa_object *o) {
return o ? PA_REFCNT_VALUE(o) : 0;
}
static inline pa_object* pa_object_cast(void *o) {
pa_object *obj = (pa_object*) o;
pa_assert(!obj || obj->check_type("pa_object"));
return obj;
}
#define pa_object_assert_ref(o) pa_assert(pa_object_refcnt(o) > 0)
#define PA_OBJECT(o) pa_object_cast(o)
#define PA_DECLARE_CLASS(c) \
static inline int c##_isinstance(void *o) { \
pa_object *obj = (pa_object*) o; \
return obj ? obj->check_type(#c) : 1; \
} \
static inline c* c##_cast(void *o) { \
pa_assert(c##_isinstance(o)); \
return (c*) o; \
} \
static inline c* c##_ref(c *o) { \
return (c*) pa_object_ref(PA_OBJECT(o)); \
} \
static inline void c##_unref(c* o) { \
pa_object_unref(PA_OBJECT(o)); \
} \
static inline int c##_refcnt(c* o) { \
return pa_object_refcnt(PA_OBJECT(o)); \
} \
static inline void c##_assert_ref(c *o) { \
pa_object_assert_ref(PA_OBJECT(o)); \
} \
struct __stupid_useless_struct_to_allow_trailing_semicolon
#define PA_DEFINE_CHECK_TYPE(c, parent) \
int c##_check_type(const char *type) { \
pa_assert(type); \
if (strcmp(type, #c) == 0) \
return 1; \
return parent##_check_type(type); \
} \
struct __stupid_useless_struct_to_allow_trailing_semicolon
#endif
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