struct ast_format *ast_format_set(struct ast_format *format, enum ast_format_id id, int set_attributes, ... )
{
/* initialize the structure before setting it. */
ast_format_clear(format);
format->id = id;
if (set_attributes) {
va_list ap;
va_start(ap, set_attributes);
format_set_helper(format, ap);
va_end(ap);
}
return format;
}
static struct interface_ao2_wrapper *find_interface(const struct ast_format *format)
{
struct interface_ao2_wrapper *wrapper;
struct interface_ao2_wrapper tmp_wrapper = {
.id = format->id,
};
ast_rwlock_rdlock(&ilock);
wrapper = ao2_find(interfaces, &tmp_wrapper, (OBJ_POINTER | OBJ_NOLOCK));
ast_rwlock_unlock(&ilock);
return wrapper;
}
static int has_interface(const struct ast_format *format)
{
struct interface_ao2_wrapper *wrapper;
wrapper = find_interface(format);
if (!wrapper) {
return 0;
}
ao2_ref(wrapper, -1);
return 1;
}
/*! \internal
* \brief set format attributes using an interface
*/
static int format_set_helper(struct ast_format *format, va_list ap)
{
struct interface_ao2_wrapper *wrapper;
if (!(wrapper = find_interface(format))) {
ast_log(LOG_WARNING, "Could not find format interface to set.\n");
return -1;
}
ast_rwlock_rdlock(&wrapper->wraplock);
if (!wrapper->interface || !wrapper->interface->format_attr_set) {
ast_rwlock_unlock(&wrapper->wraplock);
ao2_ref(wrapper, -1);
return -1;
}
wrapper->interface->format_attr_set(&format->fattr, ap);
ast_rwlock_unlock(&wrapper->wraplock);
ao2_ref(wrapper, -1);
return 0;
}
struct ast_format *ast_format_append(struct ast_format *format, ... )
{
va_list ap;
va_start(ap, format);
format_set_helper(format, ap);
va_end(ap);
return format;
}
static struct interface_ao2_wrapper *find_interface(const struct ast_format *format)
{
struct interface_ao2_wrapper tmp_wrapper = {
.id = format->id,
};
return ao2_find(interfaces, &tmp_wrapper, OBJ_POINTER);
}
static int has_interface(const struct ast_format *format)
{
struct interface_ao2_wrapper *wrapper;
wrapper = find_interface(format);
if (!wrapper) {
return 0;
}
ao2_ref(wrapper, -1);
return 1;
}
int ast_format_sdp_parse(struct ast_format *format, const char *attributes)
{
struct interface_ao2_wrapper *wrapper;
int res;
if (!(wrapper = find_interface(format))) {
return 0;
}
ao2_rdlock(wrapper);
if (!(wrapper->interface || !wrapper->interface->format_attr_sdp_parse)) {
ao2_unlock(wrapper);
ao2_ref(wrapper, -1);
return 0;
}
res = wrapper->interface->format_attr_sdp_parse(&format->fattr, attributes);
ao2_unlock(wrapper);
ao2_ref(wrapper, -1);
return res;
}
void ast_format_sdp_generate(const struct ast_format *format, unsigned int payload, struct ast_str **str)
{
struct interface_ao2_wrapper *wrapper;
if (!(wrapper = find_interface(format))) {
return;
}
ao2_rdlock(wrapper);
if (!(wrapper->interface || !wrapper->interface->format_attr_sdp_generate)) {
ao2_unlock(wrapper);
ao2_ref(wrapper, -1);
return;
}
wrapper->interface->format_attr_sdp_generate(&format->fattr, payload, str);
ao2_unlock(wrapper);
ao2_ref(wrapper, -1);
}
/*! \internal
* \brief set format attributes using an interface
*/
static int format_set_helper(struct ast_format *format, va_list ap)
{
struct interface_ao2_wrapper *wrapper;
if (!(wrapper = find_interface(format))) {
ast_log(LOG_WARNING, "Could not find format interface to set.\n");
return -1;
}
ao2_rdlock(wrapper);
if (!wrapper->interface || !wrapper->interface->format_attr_set) {
ao2_unlock(wrapper);
ao2_ref(wrapper, -1);
return -1;
}
wrapper->interface->format_attr_set(&format->fattr, ap);
ao2_unlock(wrapper);
ao2_ref(wrapper, -1);
return 0;
}
struct ast_format *ast_format_append(struct ast_format *format, ... )
{
va_list ap;
va_start(ap, format);
format_set_helper(format, ap);
va_end(ap);
return format;
}
