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node: make add_listener method

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Make struct spa_node_events for events emited from the main thread
and keep the spa_node_callbacks for the data thread callbacks.

The add_listener method installs the events and it's possible to
install multiple handles. Adding a listener first emits the info
and port_info events when installed, similar to how the PipeWire
proxy bind works.

This removes the need for the spa_pending_queue and makes it easier
to implement the _sync versions.

Add some helpers to make it easier for plugins to emit all the info
to new listeners.

Use the listeners for devices as well.
This commit is contained in:
Wim Taymans 2019-03-01 12:00:42 +01:00
parent 61ce4e77f6
commit 0390969228
53 changed files with 1774 additions and 1307 deletions
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18
spa/include/spa/monitor/utils.h
View file

@ -36,11 +36,11 @@ struct spa_result_device_params_data {
struct spa_result_device_params data;
};
static inline int spa_result_func_device_params(struct spa_pending *pending,
static inline int spa_result_func_device_params(void *data, int seq, int res,
const void *result)
{
struct spa_result_device_params_data *d =
(struct spa_result_device_params_data *)pending->data;
(struct spa_result_device_params_data *)data;
const struct spa_result_device_params *r =
(const struct spa_result_device_params *)result;
uint32_t offset = d->builder->state.offset;
@ -54,17 +54,19 @@ static inline int spa_device_enum_params_sync(struct spa_device *device,
uint32_t id, uint32_t *index,
const struct spa_pod *filter,
struct spa_pod **param,
struct spa_pod_builder *builder,
struct spa_pending_queue *queue)
struct spa_pod_builder *builder)
{
struct spa_result_device_params_data data = { builder, };
struct spa_pending pending;
struct spa_hook listener = { 0 };
static const struct spa_device_events device_events = {
SPA_VERSION_DEVICE_EVENTS,
.result = spa_result_func_device_params,
};
int res;
spa_pending_queue_add(queue, 0, &pending,
spa_result_func_device_params, &data);
spa_device_add_listener(device, &listener, &device_events, &data);
res = spa_device_enum_params(device, 0, id, *index, 1, filter);
spa_pending_remove(&pending);
spa_hook_remove(&listener);
if (data.data.param == NULL) {
if (res > 0)