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interface: add an interface struct

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The interface struct has the type,version and methods of the
interface.
Make spa interfaces extend from spa_interface and make a
separate structure for the methods.
Pass a generic void* as the first argument of methods, like
we don in PipeWire.
Bundle the methods + implementation in a versioned inteface
and use that to invoke methods. This way we can do version
checks on the methods.
Make resource and proxy interfaces that we can can call. We
can then make the core interfaces independent on proxy/resource and
hide them in the lower layers.
Add add_listener method to methods of core interfaces, just
like SPA.
This commit is contained in:
Wim Taymans 2019-05-20 16:11:23 +02:00
parent eb6481efb3
commit ff946e3d4b
85 changed files with 3051 additions and 3000 deletions
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21
spa/plugins/alsa/alsa-monitor.c
View file

@ -367,16 +367,14 @@ static int enum_devices(struct impl *this)
}
static int
impl_monitor_set_callbacks(struct spa_monitor *monitor,
impl_monitor_set_callbacks(void *object,
const struct spa_monitor_callbacks *callbacks,
void *data)
{
int res;
struct impl *this;
struct impl *this = object;
spa_return_val_if_fail(monitor != NULL, -EINVAL);
this = SPA_CONTAINER_OF(monitor, struct impl, monitor);
spa_return_val_if_fail(this != NULL, -EINVAL);
this->callbacks = SPA_CALLBACKS_INIT(callbacks, data);
@ -397,9 +395,9 @@ impl_monitor_set_callbacks(struct spa_monitor *monitor,
return 0;
}
static const struct spa_monitor impl_monitor = {
SPA_VERSION_MONITOR,
impl_monitor_set_callbacks,
static const struct spa_monitor_methods impl_monitor = {
SPA_VERSION_MONITOR_METHODS,
.set_callbacks = impl_monitor_set_callbacks,
};
static int impl_get_interface(struct spa_handle *handle, uint32_t type, void **interface)
@ -422,7 +420,7 @@ static int impl_get_interface(struct spa_handle *handle, uint32_t type, void **i
static int impl_clear(struct spa_handle *handle)
{
struct impl *this = (struct impl *) handle;
impl_monitor_set_callbacks(&this->monitor, NULL, NULL);
impl_monitor_set_callbacks(this, NULL, NULL);
return 0;
}
@ -462,7 +460,10 @@ impl_init(const struct spa_handle_factory *factory,
return -EINVAL;
}
this->monitor = impl_monitor;
this->monitor.iface = SPA_INTERFACE_INIT(
SPA_TYPE_INTERFACE_Monitor,
SPA_VERSION_MONITOR,
&impl_monitor, this);
return 0;
}