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alsa: rewrite mixer open/close, cache mixer accesses in probe

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The ALSA mixer can be opened multiple times (especially for UCM
in the probe). This adds a simple mixer cache to prevent
multiple open calls.

Signed-off-by: Jaroslav Kysela <perex@perex.cz>
This commit is contained in:
Jaroslav Kysela 2019-12-07 20:39:21 +01:00 • committed by Arun Raghavan
parent 6438e5c46d
commit 3bd7c70c51
9 changed files with 177 additions and 151 deletions
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66
src/modules/alsa/alsa-ucm.c
View file

@ -820,13 +820,13 @@ static int pa_alsa_ucm_device_cmp(const void *a, const void *b) {
return strcmp(pa_proplist_gets(d1->proplist, PA_ALSA_PROP_UCM_NAME), pa_proplist_gets(d2->proplist, PA_ALSA_PROP_UCM_NAME));
}
static void probe_volumes(pa_hashmap *hash, bool is_sink, snd_pcm_t *pcm_handle, bool ignore_dB) {
static void probe_volumes(pa_hashmap *hash, bool is_sink, snd_pcm_t *pcm_handle, pa_hashmap *mixers, bool ignore_dB) {
pa_device_port *port;
pa_alsa_path *path;
pa_alsa_ucm_port_data *data;
pa_alsa_ucm_device *dev;
snd_mixer_t *mixer_handle = NULL;
const char *profile, *mdev_opened = NULL, *mdev, *mdev2;
snd_mixer_t *mixer_handle;
const char *profile, *mdev, *mdev2;
void *state, *state2;
int idx;
@ -843,16 +843,9 @@ static void probe_volumes(pa_hashmap *hash, bool is_sink, snd_pcm_t *pcm_handle,
mdev = mdev2;
}
if (!mdev_opened || !pa_streq(mdev_opened, mdev)) {
if (mixer_handle) {
snd_mixer_close(mixer_handle);
mdev_opened = NULL;
}
if (!(mixer_handle = pa_alsa_open_mixer_by_name(mdev))) {
pa_log_error("Failed to find a working mixer device (%s).", mdev);
goto fail;
}
mdev_opened = mdev;
if (!(mixer_handle = pa_alsa_open_mixer_by_name(mixers, mdev, true))) {
pa_log_error("Failed to find a working mixer device (%s).", mdev);
goto fail;
}
PA_HASHMAP_FOREACH_KV(profile, path, data->paths, state2) {
@ -867,9 +860,6 @@ static void probe_volumes(pa_hashmap *hash, bool is_sink, snd_pcm_t *pcm_handle,
}
}
if (mixer_handle)
snd_mixer_close(mixer_handle);
return;
fail:
@ -1194,7 +1184,7 @@ void pa_alsa_ucm_add_ports(
pa_alsa_ucm_add_ports_combination(*p, context, is_sink, card->ports, NULL, card->core);
/* now set up volume paths if any */
probe_volumes(*p, is_sink, pcm_handle, ignore_dB);
probe_volumes(*p, is_sink, pcm_handle, context->ucm->mixers, ignore_dB);
/* then set property PA_PROP_DEVICE_INTENDED_ROLES */
merged_roles = pa_xstrdup(pa_proplist_gets(proplist, PA_PROP_DEVICE_INTENDED_ROLES));
@ -1543,6 +1533,7 @@ static pa_alsa_jack* ucm_get_jack(pa_alsa_ucm_config *ucm, pa_alsa_ucm_device *d
pa_alsa_jack *j;
const char *device_name;
const char *jack_control;
const char *mixer_device_name;
char *name;
pa_assert(ucm);
@ -1585,7 +1576,14 @@ static pa_alsa_jack* ucm_get_jack(pa_alsa_ucm_config *ucm, pa_alsa_ucm_device *d
if (pa_streq(j->name, name))
goto finish;
j = pa_alsa_jack_new(NULL, name);
mixer_device_name = get_jack_mixer_device(device, true);
if (!mixer_device_name)
mixer_device_name = get_jack_mixer_device(device, false);
if (!mixer_device_name) {
pa_log("[%s] No mixer device name for JackControl \"%s\"", device_name, jack_control);
return NULL;
}
j = pa_alsa_jack_new(NULL, mixer_device_name, name);
PA_LLIST_PREPEND(pa_alsa_jack, ucm->jacks, j);
finish:
@ -1765,44 +1763,28 @@ static void profile_finalize_probing(pa_alsa_profile *p) {
}
}
static void ucm_mapping_jack_probe(pa_alsa_mapping *m) {
snd_mixer_t *mixer_handle = NULL;
static void ucm_mapping_jack_probe(pa_alsa_mapping *m, pa_hashmap *mixers) {
snd_mixer_t *mixer_handle;
pa_alsa_ucm_mapping_context *context = &m->ucm_context;
pa_alsa_ucm_device *dev;
bool is_sink = m->direction == PA_ALSA_DIRECTION_OUTPUT;
const char *mdev_opened = NULL, *mdev;
uint32_t idx;
PA_IDXSET_FOREACH(dev, context->ucm_devices, idx) {
bool has_control;
if (!dev->jack)
if (!dev->jack || !dev->jack->mixer_device_name)
continue;
mdev = get_jack_mixer_device(dev, is_sink);
if (mdev == NULL) {
pa_log_error("Unable to determine mixer device for jack %s", dev->jack->name);
mixer_handle = pa_alsa_open_mixer_by_name(mixers, dev->jack->mixer_device_name, true);
if (!mixer_handle) {
pa_log_error("Unable to determine open mixer device '%s' for jack %s", dev->jack->mixer_device_name, dev->jack->name);
continue;
}
if (!mdev_opened || !pa_streq(mdev_opened, mdev)) {
if (mixer_handle) {
snd_mixer_close(mixer_handle);
mdev_opened = NULL;
}
mixer_handle = pa_alsa_open_mixer_by_name(mdev);
if (!mixer_handle)
continue;
mdev_opened = mdev;
}
has_control = pa_alsa_mixer_find_card(mixer_handle, dev->jack->alsa_name, 0) != NULL;
pa_alsa_jack_set_has_control(dev->jack, has_control);
pa_log_info("UCM jack %s has_control=%d", dev->jack->name, dev->jack->has_control);
}
if (mixer_handle)
snd_mixer_close(mixer_handle);
}
static void ucm_probe_profile_set(pa_alsa_ucm_config *ucm, pa_alsa_profile_set *ps) {
@ -1860,11 +1842,11 @@ static void ucm_probe_profile_set(pa_alsa_ucm_config *ucm, pa_alsa_profile_set *
PA_IDXSET_FOREACH(m, p->output_mappings, idx)
if (!PA_UCM_IS_MODIFIER_MAPPING(m))
ucm_mapping_jack_probe(m);
ucm_mapping_jack_probe(m, ucm->mixers);
PA_IDXSET_FOREACH(m, p->input_mappings, idx)
if (!PA_UCM_IS_MODIFIER_MAPPING(m))
ucm_mapping_jack_probe(m);
ucm_mapping_jack_probe(m, ucm->mixers);
profile_finalize_probing(p);
}