mirrors/pipewire
1
0
Fork 0
mirror of https://gitlab.freedesktop.org/pipewire/pipewire.git synced 2025-11-17 07:00:03 -05:00
Code Issues Projects Releases Packages Wiki Activity Actions

context: add loader.rules

Browse source 
Add loader.rules that are executed right before the loader tries to load
the plugin with the info. This can be used to add or change properties
for the plugin.

One example would be to pass extra properties to the alsa or v4l2
plugin, even when this plugin is loaded by another process like
wireplumber.
This commit is contained in:
Wim Taymans 2024-06-07 11:45:22 +02:00
parent d6c17681da
commit cfeb937443
1 changed files with 30 additions and 1 deletions
Download patch file Download diff file Expand all files Collapse all files

31
src/pipewire/context.c
View file

@ -1930,6 +1930,25 @@ const char *pw_context_find_spa_lib(struct pw_context *context, const char *fact
return NULL; return NULL;
} }
struct match {
const struct spa_dict *info;
struct pw_properties *props;
int count;
};
#define MATCH_INIT(i) ((struct match){ .info = (i) })
static int execute_match(void *data, const char *location, const char *action,
const char *val, size_t len)
{
struct match *match = data;
if (spa_streq(action, "update-props")) {
if (match->props == NULL)
match->props = pw_properties_new_dict(match->info);
match->count += pw_properties_update_string(match->props, val, len);
}
return 1;
}
SPA_EXPORT SPA_EXPORT
struct spa_handle *pw_context_load_spa_handle(struct pw_context *context, struct spa_handle *pw_context_load_spa_handle(struct pw_context *context,
const char *factory_name, const char *factory_name,
@ -1939,6 +1958,7 @@ struct spa_handle *pw_context_load_spa_handle(struct pw_context *context,
const struct spa_support *support; const struct spa_support *support;
uint32_t n_support; uint32_t n_support;
struct spa_handle *handle; struct spa_handle *handle;
struct match match;
pw_log_debug("%p: load factory %s", context, factory_name); pw_log_debug("%p: load factory %s", context, factory_name);
@ -1952,11 +1972,20 @@ struct spa_handle *pw_context_load_spa_handle(struct pw_context *context,
return NULL; return NULL;
} }
support = context_get_support(context, &n_support, info); match = MATCH_INIT(info);
if (info) {
pw_context_conf_section_match_rules(context, "loader.rules",
info, execute_match, &match);
if (match.props)
info = &match.props->dict;
}
support = context_get_support(context, &n_support, info);
handle = pw_load_spa_handle(lib, factory_name, handle = pw_load_spa_handle(lib, factory_name,
info, n_support, support); info, n_support, support);
pw_properties_free(match.props);
return handle; return handle;
} }