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alsa: improve property handling some more

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Use properties from the context for matching first, then fill in some
defaults, then override with env variables.
Add property rules in ctl as well.
This commit is contained in:
Wim Taymans 2023-01-19 18:15:32 +01:00
parent 98163d90df
commit e0bfd7421b
2 changed files with 48 additions and 21 deletions
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52
pipewire-alsa/alsa-plugins/ctl_pipewire.c
View file

@ -47,6 +47,8 @@ struct volume {
typedef struct {
snd_ctl_ext_t ext;
struct pw_properties *props;
struct spa_system *system;
struct pw_thread_loop *mainloop;
@ -761,6 +763,7 @@ static void snd_ctl_pipewire_free(snd_ctl_pipewire_t *ctl)
spa_system_close(ctl->system, ctl->fd);
if (ctl->mainloop)
pw_thread_loop_destroy(ctl->mainloop);
pw_properties_free(ctl->props);
free(ctl);
}
@ -1230,6 +1233,14 @@ static const struct pw_core_events core_events = {
.done = on_core_done,
};
static int execute_match(void *data, const char *location, const char *action,
const char *val, size_t len)
{
snd_ctl_pipewire_t *ctl = data;
if (spa_streq(action, "update-props"))
pw_properties_update_string(ctl->props, val, len);
return 1;
}
SPA_EXPORT
SND_CTL_PLUGIN_DEFINE_FUNC(pipewire)
@ -1242,7 +1253,6 @@ SND_CTL_PLUGIN_DEFINE_FUNC(pipewire)
const char *fallback_name = NULL;
int err;
const char *str;
struct pw_properties *props = NULL;
snd_ctl_pipewire_t *ctl;
struct pw_loop *loop;
@ -1305,10 +1315,6 @@ SND_CTL_PLUGIN_DEFINE_FUNC(pipewire)
return -EINVAL;
}
str = getenv("PIPEWIRE_REMOTE");
if (str != NULL && str[0] != '\0')
server = str;
if (fallback_name && name && spa_streq(name, fallback_name))
fallback_name = NULL; /* no fallback for the same name */
@ -1343,30 +1349,48 @@ SND_CTL_PLUGIN_DEFINE_FUNC(pipewire)
goto error;
}
ctl->context = pw_context_new(loop, NULL, 0);
ctl->context = pw_context_new(loop,
pw_properties_new(
PW_KEY_CLIENT_API, "alsa",
NULL),
0);
if (ctl->context == NULL) {
err = -errno;
goto error;
}
props = pw_properties_new(NULL, NULL);
if (props == NULL) {
ctl->props = pw_properties_new(NULL, NULL);
if (ctl->props == NULL) {
err = -errno;
goto error;
}
pw_properties_setf(props, PW_KEY_APP_NAME, "PipeWire ALSA [%s]",
pw_get_prgname());
if (server)
pw_properties_set(props, PW_KEY_REMOTE_NAME, server);
pw_properties_set(ctl->props, PW_KEY_REMOTE_NAME, server);
pw_context_conf_update_props(ctl->context, "alsa.properties", ctl->props);
pw_context_conf_section_match_rules(ctl->context, "alsa.rules",
&pw_context_get_properties(ctl->context)->dict,
execute_match, ctl);
if (pw_properties_get(ctl->props, PW_KEY_APP_NAME) == NULL)
pw_properties_setf(ctl->props, PW_KEY_APP_NAME, "PipeWire ALSA [%s]",
pw_get_prgname());
str = getenv("PIPEWIRE_ALSA");
if (str != NULL)
pw_properties_update_string(pw->props, str, strlen(str));
str = getenv("PIPEWIRE_REMOTE");
if (str != NULL && str[0] != '\0')
pw_properties_set(ctl->props, PW_KEY_REMOTE_NAME, str);
if ((err = pw_thread_loop_start(ctl->mainloop)) < 0)
goto error;
pw_thread_loop_lock(ctl->mainloop);
ctl->core = pw_context_connect(ctl->context, props, 0);
props = NULL;
ctl->core = pw_context_connect(ctl->context, pw_properties_copy(ctl->props), 0);
if (ctl->core == NULL) {
err = -errno;
goto error_unlock;

17
pipewire-alsa/alsa-plugins/pcm_pipewire.c
View file

@ -1125,13 +1125,17 @@ static int snd_pcm_pipewire_open(snd_pcm_t **pcmp,
if ((pw->context = pw_context_new(loop,
pw_properties_new(
PW_KEY_CONFIG_NAME, "client-rt.conf",
PW_KEY_CLIENT_API, "alsa",
NULL),
0)) == NULL) {
err = -errno;
goto error;
}
pw_properties_set(pw->props, PW_KEY_CLIENT_API, "alsa");
pw_context_conf_update_props(pw->context, "alsa.properties", pw->props);
pw_context_conf_section_match_rules(pw->context, "alsa.rules",
&pw_context_get_properties(pw->context)->dict, execute_match, pw);
if (pw_properties_get(pw->props, PW_KEY_APP_NAME) == NULL)
pw_properties_setf(pw->props, PW_KEY_APP_NAME, "PipeWire ALSA [%s]",
@ -1146,19 +1150,18 @@ static int snd_pcm_pipewire_open(snd_pcm_t **pcmp,
stream == SND_PCM_STREAM_PLAYBACK ?
"Playback" : "Capture");
pw_context_conf_update_props(pw->context, "alsa.properties", pw->props);
pw_context_conf_section_match_rules(pw->context, "alsa.rules",
&pw->props->dict, execute_match, pw);
str = getenv("PIPEWIRE_ALSA");
if (str != NULL)
pw_properties_update_string(pw->props, str, strlen(str));
str = getenv("PIPEWIRE_NODE");
if (str != NULL)
if (str != NULL && str[0])
pw_properties_set(pw->props, PW_KEY_TARGET_OBJECT, str);
str = getenv("PIPEWIRE_REMOTE");
if (str != NULL && str[0])
pw_properties_set(ctl->props, PW_KEY_REMOTE_NAME, str);
node_name = pw_properties_get(pw->props, PW_KEY_NODE_NAME);
if (pw_properties_get(pw->props, PW_KEY_MEDIA_NAME) == NULL)
pw_properties_set(pw->props, PW_KEY_MEDIA_NAME, node_name);