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/* WirePlumber
*
* Copyright © 2019 Collabora Ltd.
* @author George Kiagiadakis <george.kiagiadakis@collabora.com>
*
* SPDX-License-Identifier: LGPL-2.1-or-later
*/
/**
* module-pw-alsa-udev provides alsa device detection through pipewire
* and automatically creates endpoints for all alsa device nodes that appear
*/
#include <wp/wp.h>
#include <pipewire/pipewire.h>
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#define NAME "module-pw-alsa-udev"
struct impl {
WpCore *wp_core;
struct pw_remote *remote;
struct spa_hook remote_listener;
struct pw_registry_proxy *registry_proxy;
struct spa_hook registry_listener;
};
static void
handle_node(struct impl *impl, uint32_t id, uint32_t parent_id,
const struct spa_dict *props)
{
const gchar *media_class = NULL, *node_name = NULL;
struct spa_proxy *proxy = NULL;
GVariantBuilder b;
g_autoptr(GVariant) endpoint_props = NULL;
/* Make sure the node has properties */
if (!props) {
g_warning(NAME" %p: node has no properties, skipping...", impl);
return;
}
/* Make sure the media class is audio */
/* FIXME: need to handle only alsa nodes */
media_class = spa_dict_lookup(props, "media.class");
if (!g_str_has_prefix (media_class, "Audio/"))
return;
/* Get the device name */
node_name = spa_dict_lookup(props, "node.name");
/* Get the proxy */
proxy = pw_registry_proxy_bind (impl->registry_proxy, id,
PW_TYPE_INTERFACE_Node, PW_VERSION_NODE, 0);
/* Build the GVariant properties for the endpoint */
g_variant_builder_init (&b, G_VARIANT_TYPE_VARDICT);
g_variant_builder_add (&b, "{sv}", "name",
g_variant_new_take_string (g_strdup_printf ("Endpoint %u: %s", id, node_name)));
g_variant_builder_add (&b, "{sv}",
"media-class", g_variant_new_string (media_class));
g_variant_builder_add (&b, "{sv}",
"node-proxy", g_variant_new_uint64 ((guint64) proxy));
endpoint_props = g_variant_builder_end (&b);
/* Create the endpoint */
wp_factory_make (impl->wp_core, "pw-audio-softdsp-endpoint", WP_TYPE_ENDPOINT,
endpoint_props);
}
static void
registry_global(void *data,uint32_t id, uint32_t parent_id,
uint32_t permissions, uint32_t type, uint32_t version,
const struct spa_dict *props)
{
struct impl *impl = data;
/* Only handle nodes */
switch (type) {
case PW_TYPE_INTERFACE_Node:
handle_node(impl, id, parent_id, props);
break;
default:
break;
}
}
static const struct pw_registry_proxy_events registry_events = {
PW_VERSION_REGISTRY_PROXY_EVENTS,
.global = registry_global,
};
static void on_state_changed(void *_data, enum pw_remote_state old,
enum pw_remote_state state, const char *error)
{
struct impl *impl = _data;
struct pw_core_proxy *core_proxy;
switch (state) {
case PW_REMOTE_STATE_CONNECTED:
core_proxy = pw_remote_get_core_proxy (impl->remote);
impl->registry_proxy = pw_core_proxy_get_registry (core_proxy,
PW_TYPE_INTERFACE_Registry, PW_VERSION_REGISTRY, 0);
pw_registry_proxy_add_listener(impl->registry_proxy,
&impl->registry_listener, ®istry_events, impl);
break;
case PW_REMOTE_STATE_ERROR:
/* TODO quit wireplumber */
break;
case PW_REMOTE_STATE_UNCONNECTED:
/* TODO quit wireplumber */
break;
default:
break;
}
}
static const struct pw_remote_events remote_events = {
PW_VERSION_REMOTE_EVENTS,
.state_changed = on_state_changed,
};
static void
module_destroy (gpointer data)
{
struct impl *impl = data;
g_debug ("module-pipewire destroy");
g_slice_free (struct impl, impl);
}
void
wireplumber__module_init (WpModule * module, WpCore * core, GVariant * args)
{
Julian Bouzas
committed
/* This needs to create the alsa sink and alsa source nodes, but since
* this is already implemented in the alsa-module of pipewire, for now
* we just listen for the alsa nodes created by pipewire. We eventually
* need to move all the node creation logic here */
/* Create the impl */
struct impl *impl = g_new0(struct impl, 1);
impl->wp_core = core;
impl->remote = wp_core_get_global(core, WP_GLOBAL_PW_REMOTE);
/* Set destroy callback for impl */
wp_module_set_destroy_callback (module, module_destroy, impl);
/* Add a state changed listener */
pw_remote_add_listener(impl->remote, &impl->remote_listener, &remote_events, impl);