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filter-chain: first create instances and then link port

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First make instances of all the plugins and then try to link them up.

Otherwise, depending on the order the plugins are defined in the config,
a link will try to create port data and set it on the instance, which is
still NULL and we crash.
This commit is contained in:
Wim Taymans 2024-10-24 10:55:50 +02:00
parent cdb3c64753
commit 9697b67802
1 changed files with 16 additions and 8 deletions
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24
src/modules/module-filter-chain.c
View file

@ -2348,19 +2348,12 @@ static int graph_instantiate(struct graph *graph)
graph->instantiated = true;
/* first make instances */
spa_list_for_each(node, &graph->node_list, link) {
node_cleanup(node);
desc = node->desc;
d = desc->desc;
if (d->flags & FC_DESCRIPTOR_SUPPORTS_NULL_DATA) {
sd = dd = NULL;
}
else {
sd = impl->silence_data;
dd = impl->discard_data;
}
for (i = 0; i < node->n_hndl; i++) {
pw_log_info("instantiate %s %d rate:%lu", d->name, i, impl->rate);
@ -2370,6 +2363,21 @@ static int graph_instantiate(struct graph *graph)
res = -errno;
goto error;
}
}
}
/* then link ports and activate */
spa_list_for_each(node, &graph->node_list, link) {
desc = node->desc;
d = desc->desc;
if (d->flags & FC_DESCRIPTOR_SUPPORTS_NULL_DATA) {
sd = dd = NULL;
}
else {
sd = impl->silence_data;
dd = impl->discard_data;
}
for (i = 0; i < node->n_hndl; i++) {
for (j = 0; j < desc->n_input; j++) {
port = &node->input_port[j];
d->connect_port(node->hndl[i], port->p, sd);