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filter-chain: add method to notify control changes

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This commit is contained in:
Wim Taymans 2023-01-30 16:28:01 +01:00 • committed by Dmitry Sharshakov
parent cf09077705
commit 63002bfcee
2 changed files with 28 additions and 1 deletions
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28
src/modules/module-filter-chain.c
View file

@ -506,6 +506,7 @@ struct node {
unsigned int n_deps;
unsigned int visited:1;
unsigned int disabled:1;
unsigned int control_changed:1;
};
struct link {
@ -878,7 +879,8 @@ static int set_control_value(struct node *node, const char *name, float *value)
old = port->control_data;
port->control_data = value ? *value : desc->default_control[port->idx];
pw_log_info("control %d ('%s') from %f to %f", port->idx, name, old, port->control_data);
return old == port->control_data ? 0 : 1;
node->control_changed = old != port->control_data;
return node->control_changed ? 1 : 0;
}
static int parse_params(struct graph *graph, const struct spa_pod *pod)
@ -938,6 +940,24 @@ static void graph_reset(struct graph *graph)
d->activate(*hndl->hndl);
}
}
static void node_control_changed(struct node *node)
{
const struct fc_descriptor *d = node->desc->desc;
uint32_t i;
if (!node->control_changed)
return;
for (i = 0; i < node->n_hndl; i++) {
if (node->hndl[i] == NULL)
continue;
if (d->control_changed)
d->control_changed(node->hndl[i]);
}
node->control_changed = false;
}
static void param_props_changed(struct impl *impl, const struct spa_pod *param)
{
struct spa_pod_object *obj = (struct spa_pod_object *) param;
@ -953,6 +973,10 @@ static void param_props_changed(struct impl *impl, const struct spa_pod *param)
uint8_t buffer[1024];
struct spa_pod_dynamic_builder b;
const struct spa_pod *params[1];
struct node *node;
spa_list_for_each(node, &graph->node_list, link)
node_control_changed(node);
spa_pod_dynamic_builder_init(&b, buffer, sizeof(buffer), 4096);
params[0] = get_props_param(graph, &b.b);
@ -1771,6 +1795,8 @@ static int graph_instantiate(struct graph *graph)
}
if (d->activate)
d->activate(node->hndl[i]);
if (node->control_changed && d->control_changed)
d->control_changed(node->hndl[i]);
}
}
return 0;

1
src/modules/module-filter-chain/plugin.h
View file

@ -83,6 +83,7 @@ struct fc_descriptor {
void (*cleanup) (void *instance);
void (*connect_port) (void *instance, unsigned long port, float *data);
void (*control_changed) (void *instance);
void (*activate) (void *instance);
void (*deactivate) (void *instance);