[pulseaudio-discuss] [PATCHv2 4/7] alsa: add support for ucm profiles
Margarita Olaya
magi at slimlogic.co.uk
Sun Apr 24 19:20:43 PDT 2011
This patch adds ALSA UCM (Use Case Manager) support to module alsa card.
It checks if UCM is available for each card and if found it used the profiles
generated with ucm data.
Using a udev-rule user can decide if UCM will be used or not,
Depending on the status of USE_UCM property, a flag is passed as
module argument to module-alsa-card.
Signed-off-by: Margarita Olaya Cabrera <magi at slimlogic.co.uk>
---
src/modules/alsa/module-alsa-card.c | 118 +++++++++++++++++++++++++++++++----
src/modules/module-udev-detect.c | 11 +++-
2 files changed, 116 insertions(+), 13 deletions(-)
diff --git a/src/modules/alsa/module-alsa-card.c
b/src/modules/alsa/module-alsa-card.c
index e60aa5e..dd80927 100644
--- a/src/modules/alsa/module-alsa-card.c
+++ b/src/modules/alsa/module-alsa-card.c
@@ -39,6 +39,7 @@
#include "alsa-util.h"
#include "alsa-sink.h"
#include "alsa-source.h"
+#include "alsa-ucm.h"
#include "module-alsa-card-symdef.h"
PA_MODULE_AUTHOR("Lennart Poettering");
@@ -66,7 +67,8 @@ PA_MODULE_USAGE(
"profile=<profile name> "
"ignore_dB=<ignore dB information from the device?> "
"sync_volume=<syncronize sw and hw voluchanges in IO-thread?> "
- "profile_set=<profile set configuration file> ");
+ "profile_set=<profile set configuration file> "
+ "use_ucm=<Load Use Case Manager> ");
static const char* const valid_modargs[] = {
"name",
@@ -90,6 +92,7 @@ static const char* const valid_modargs[] = {
"ignore_dB",
"sync_volume",
"profile_set",
+ "use_ucm",
NULL
};
@@ -106,10 +109,8 @@ struct userdata {
pa_modargs *modargs;
pa_alsa_profile_set *profile_set;
-};
-struct profile_data {
- pa_alsa_profile *profile;
+ pa_alsa_ucm_config ucm;
};
static void add_profiles(struct userdata *u, pa_hashmap *h) {
@@ -207,6 +208,15 @@ static int card_set_profile(pa_card *c,
pa_card_profile *new_profile) {
am->source = NULL;
}
+ /* if UCM is avalible for this card then update the verb */
+ if (u->ucm.status == PA_ALSA_UCM_ENABLED) {
+ struct profile_data *d;
+ /* current profile */
+ d = PA_CARD_PROFILE_DATA(u->card->active_profile);
+ if (ucm_set_profile(&u->ucm, nd->profile->name, d) < 0)
+ return -1;
+ }
+
if (nd->profile && nd->profile->output_mappings)
PA_IDXSET_FOREACH(am, nd->profile->output_mappings, idx) {
@@ -240,15 +250,40 @@ static int card_set_profile(pa_card *c,
pa_card_profile *new_profile) {
return 0;
}
-static void init_profile(struct userdata *u) {
+static int init_profile(struct userdata *u) {
uint32_t idx;
pa_alsa_mapping *am;
struct profile_data *d;
+ char *device_name, *verb_name, *tmp;
+ struct pa_alsa_ucm_config *ucm = &u->ucm;
pa_assert(u);
d = PA_CARD_PROFILE_DATA(u->card->active_profile);
+ if (u->ucm.status == PA_ALSA_UCM_ENABLED) {
+ /* Set initial verb and device */
+ verb_name = pa_xstrdup(d->profile->name);
+ tmp = strchr(verb_name, ':');
+ if (!tmp) {
+ pa_log("no new verb found for %s", d->profile->name);
+ pa_xfree(verb_name);
+ return -1;
+ }
+ *tmp = 0;
+
+ if ((snd_use_case_set(ucm->ucm_mgr, "_verb", verb_name)) < 0) {
+ pa_log("failed to set verb %s", d->profile->name);
+ return -1;
+ }
+
+ device_name = strchr(d->profile->name, ':') + 2;
+ if (snd_use_case_set(ucm->ucm_mgr, "_enadev", device_name) < 0) {
+ pa_log("failed to set device %s", device_name);
+ return -1;
+ }
+ }
+
if (d->profile && d->profile->output_mappings)
PA_IDXSET_FOREACH(am, d->profile->output_mappings, idx)
am->sink = pa_alsa_sink_new(u->module, u->modargs,
__FILE__, u->card, am);
@@ -256,6 +291,8 @@ static void init_profile(struct userdata *u) {
if (d->profile && d->profile->input_mappings)
PA_IDXSET_FOREACH(am, d->profile->input_mappings, idx)
am->source = pa_alsa_source_new(u->module, u->modargs,
__FILE__, u->card, am);
+
+ return 0;
}
static void set_card_name(pa_card_new_data *data, pa_modargs *ma,
const char *device_id) {
@@ -284,6 +321,56 @@ static void set_card_name(pa_card_new_data *data,
pa_modargs *ma, const char *de
pa_xfree(t);
}
+static int card_query_ucm_profiles(struct userdata *u, int card_index)
+{
+ char *card_name;
+ const char **verb_list;
+ int num_verbs, i, err;
+
+ /* is UCM available for this card ? */
+ snd_card_get_name(card_index, &card_name);
+ err = snd_use_case_mgr_open(&u->ucm.ucm_mgr, card_name);
+ if (err < 0) {
+ pa_log("UCM not avaliable for card %s", card_name);
+ u->ucm.status = PA_ALSA_UCM_DISABLED;
+ return 0;
+ }
+
+ pa_log("UCM avaliable for card %s", card_name);
+
+ /* get a list of all UCM verbs (profiles) for this card */
+ num_verbs = snd_use_case_verb_list(u->ucm.ucm_mgr, &verb_list);
+ if (num_verbs <= 0) {
+ pa_log("UCM verb list not found for %s", card_name);
+ return 0;
+ }
+
+ /* get the properties of each UCM verb */
+ for (i = 0; i < num_verbs; i += 2) {
+ struct pa_alsa_ucm_verb *verb;
+
+ verb = pa_xnew0(pa_alsa_ucm_verb, 1);
+ verb->proplist = pa_proplist_new();
+
+ /* Get devices and modifiers for each verb */
+ err = ucm_get_properties(verb, u->ucm.ucm_mgr, verb_list[i]);
+ if (err < 0) {
+ pa_log("Failed to set the verb %s", verb_list[i]);
+ continue;
+ }
+
+ pa_proplist_sets(verb->proplist, PA_PROP_UCM_NAME, verb_list[i]);
+ PA_LLIST_PREPEND(pa_alsa_ucm_verb, u->ucm.verbs, verb);
+ }
+
+ /* create the profile set for the UCM card */
+ u->profile_set = add_ucm_profile_set(&u->ucm,
&u->core->default_channel_map);
+ pa_alsa_profile_set_dump(u->profile_set);
+
+ u->ucm.status = PA_ALSA_UCM_ENABLED;
+ return 1;
+}
+
int pa__init(pa_module *m) {
pa_card_new_data data;
pa_modargs *ma;
@@ -292,7 +379,7 @@ int pa__init(pa_module *m) {
pa_reserve_wrapper *reserve = NULL;
const char *description;
char *fn = NULL;
- pa_bool_t namereg_fail = FALSE;
+ pa_bool_t namereg_fail = FALSE, use_ucm = FALSE;
pa_alsa_refcnt_inc();
@@ -326,18 +413,22 @@ int pa__init(pa_module *m) {
}
}
+ if (card_query_ucm_profiles(u, alsa_card_index))
+ pa_log_info("Found UCM profiles");
+ else {
#ifdef HAVE_UDEV
- fn = pa_udev_get_property(alsa_card_index, "PULSE_PROFILE_SET");
+ fn = pa_udev_get_property(alsa_card_index, "PULSE_PROFILE_SET");
#endif
- if (pa_modargs_get_value(ma, "profile_set", NULL)) {
+ if (pa_modargs_get_value(ma, "profile_set", NULL)) {
+ pa_xfree(fn);
+ fn = pa_xstrdup(pa_modargs_get_value(ma, "profile_set", NULL));
+ }
+
+ u->profile_set = pa_alsa_profile_set_new(fn,
&u->core->default_channel_map);
pa_xfree(fn);
- fn = pa_xstrdup(pa_modargs_get_value(ma, "profile_set", NULL));
}
- u->profile_set = pa_alsa_profile_set_new(fn,
&u->core->default_channel_map);
- pa_xfree(fn);
-
if (!u->profile_set)
goto fail;
@@ -462,6 +553,9 @@ void pa__done(pa_module*m) {
pa_alsa_source_free(s);
}
+ if (u->ucm.status == PA_ALSA_UCM_ENABLED)
+ free_ucm(&u->ucm);
+
if (u->card)
pa_card_free(u->card);
diff --git a/src/modules/module-udev-detect.c b/src/modules/module-udev-detect.c
index 63ad195..4fa48ba 100644
--- a/src/modules/module-udev-detect.c
+++ b/src/modules/module-udev-detect.c
@@ -51,6 +51,7 @@ PA_MODULE_USAGE(
struct device {
char *path;
pa_bool_t need_verify;
+ pa_bool_t use_ucm;
char *card_name;
char *args;
uint32_t module;
@@ -383,6 +384,12 @@ static void card_changed(struct userdata *u,
struct udev_device *dev) {
n = pa_namereg_make_valid_name(t);
d->card_name = pa_sprintf_malloc("alsa_card.%s", n);
+
+ if (udev_device_get_property_value(dev, "USE_UCM"))
+ d->use_ucm = TRUE;
+ else
+ d->use_ucm = FALSE;
+
d->args = pa_sprintf_malloc("device_id=\"%s\" "
"name=\"%s\" "
"card_name=\"%s\" "
@@ -390,13 +397,15 @@ static void card_changed(struct userdata *u,
struct udev_device *dev) {
"tsched=%s "
"ignore_dB=%s "
"sync_volume=%s "
+ "use_ucm=%d "
"card_properties=\"module-udev-detect.discovered=1\"",
path_get_card_id(path),
n,
d->card_name,
pa_yes_no(u->use_tsched),
pa_yes_no(u->ignore_dB),
- pa_yes_no(u->sync_volume));
+ pa_yes_no(u->sync_volume),
+ d->use_ucm);
pa_xfree(n);
pa_hashmap_put(u->devices, d->path, d);
--
1.7.0.4
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