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jack: listen to latency updates on ports

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Listen for the latency updates on ports and use this to report
latency.
This commit is contained in:
Wim Taymans 2021-05-21 10:02:34 +02:00
parent 1cd6d7b01d
commit b588cc6b03
1 changed files with 99 additions and 19 deletions
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118
pipewire-jack/src/pipewire-jack.c
View file

@ -142,8 +142,14 @@ struct object {
struct port *port;
bool is_monitor;
struct object *node;
float latency_quantum[2];
uint32_t latency_min[2];
uint32_t latency_max[2];
} port;
};
struct pw_proxy *proxy;
struct spa_hook proxy_listener;
struct spa_hook object_listener;
};
struct midi_buffer {
@ -2153,6 +2159,63 @@ static const struct pw_metadata_events metadata_events = {
.property = metadata_property
};
static void proxy_removed(void *data)
{
struct object *o = data;
pw_proxy_destroy(o->proxy);
}
static void proxy_destroy(void *data)
{
struct object *o = data;
spa_hook_remove(&o->proxy_listener);
spa_hook_remove(&o->object_listener);
o->proxy = NULL;
}
static const struct pw_proxy_events proxy_events = {
PW_VERSION_PROXY_EVENTS,
.removed = proxy_removed,
.destroy = proxy_destroy,
};
static void port_param(void *object, int seq,
uint32_t id, uint32_t index, uint32_t next,
const struct spa_pod *param)
{
struct object *o = object;
switch (id) {
case SPA_PARAM_Latency:
{
uint32_t direction;
float latency_quantum;
uint32_t latency_min, latency_max;
if (spa_pod_parse_object(param,
SPA_TYPE_OBJECT_ParamLatency, NULL,
SPA_PARAM_LATENCY_direction,SPA_POD_Id(&direction),
SPA_PARAM_LATENCY_quantum,SPA_POD_Float(&latency_quantum),
SPA_PARAM_LATENCY_min, SPA_POD_Int(&latency_min),
SPA_PARAM_LATENCY_max, SPA_POD_Int(&latency_max)) < 0)
return;
direction &= 1;
o->port.latency_quantum[direction] = latency_quantum;
o->port.latency_min[direction] = latency_min;
o->port.latency_max[direction] = latency_max;
break;
}
default:
break;
}
}
static const struct pw_port_events port_events = {
PW_VERSION_PORT,
.param = port_param,
};
#define FILTER_NAME " ()[].:*$"
#define FILTER_PORT " ()[].*$"
@ -2321,6 +2384,20 @@ static void registry_event_global(void *data, uint32_t id,
o->port.port_id = SPA_ID_INVALID;
o->port.priority = ot->node.priority;
o->port.node = ot;
o->proxy = pw_registry_bind(c->registry,
id, type, PW_VERSION_PORT, 0);
if (o->proxy) {
uint32_t ids[1] = { SPA_PARAM_Latency };
pw_proxy_add_listener(o->proxy,
&o->proxy_listener, &proxy_events, o);
pw_proxy_add_object_listener(o->proxy,
&o->object_listener, &port_events, o);
pw_port_subscribe_params((struct pw_port*)o->proxy,
ids, 1);
}
}
if ((str = spa_dict_lookup(props, PW_KEY_OBJECT_PATH)) != NULL)
@ -2446,6 +2523,10 @@ static void registry_event_global_remove(void *object, uint32_t id)
* they are unregistered. We keep the memory around for that
* reason but reuse it when we can. */
spa_list_append(&c->context.free_objects, &o->link);
if (o->proxy) {
pw_proxy_destroy(o->proxy);
o->proxy = NULL;
}
if (o->type == INTERFACE_Node)
is_last = find_node(c, o->node.name) == NULL;
@ -4341,26 +4422,21 @@ void jack_port_get_latency_range (jack_port_t *port, jack_latency_callback_mode_
{
struct object *o = (struct object *) port;
struct client *c;
jack_nframes_t nframes;
int direction;
spa_return_if_fail(o != NULL);
c = o->client;
if (o->port.flags & JackPortIsTerminal) {
jack_nframes_t nframes = jack_get_buffer_size((jack_client_t*)c);
if (o->port.flags & JackPortIsOutput) {
o->port.capture_latency.min = nframes;
o->port.capture_latency.max = nframes;
} else {
o->port.playback_latency.min = nframes;
o->port.playback_latency.max = nframes;
}
}
if (mode == JackCaptureLatency)
direction = SPA_DIRECTION_OUTPUT;
else
direction = SPA_DIRECTION_INPUT;
if (mode == JackCaptureLatency) {
*range = o->port.capture_latency;
} else {
*range = o->port.playback_latency;
}
nframes = jack_get_buffer_size((jack_client_t*)c);
nframes *= o->port.latency_quantum[direction];
range->min = nframes + o->port.latency_min[direction];
range->max = nframes + o->port.latency_max[direction];
}
SPA_EXPORT
@ -4384,8 +4460,7 @@ int jack_recompute_total_latencies (jack_client_t *client)
return 0;
}
SPA_EXPORT
jack_nframes_t jack_port_get_latency (jack_port_t *port)
static jack_nframes_t port_get_latency (jack_port_t *port)
{
struct object *o = (struct object *) port;
jack_latency_range_t range = { 0, 0 };
@ -4401,12 +4476,17 @@ jack_nframes_t jack_port_get_latency (jack_port_t *port)
return (range.min + range.max) / 2;
}
SPA_EXPORT
jack_nframes_t jack_port_get_latency (jack_port_t *port)
{
return port_get_latency(port);
}
SPA_EXPORT
jack_nframes_t jack_port_get_total_latency (jack_client_t *client,
jack_port_t *port)
{
pw_log_warn(NAME" %p: not implemented %p", client, port);
return 0;
return port_get_latency(port);
}
SPA_EXPORT