mirror of
https://github.com/alsa-project/alsa-lib.git
synced 2025-10-29 05:40:25 -04:00
ucm: added implementation for other ucm parts, only card name list is missing
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
This commit is contained in:
Jaroslav Kysela
parent
404cd090b2
commit
6c6dc230bc
2 changed files with 220 additions and 12 deletions
226
src/ucm/main.c
226
src/ucm/main.c
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@ -313,6 +313,21 @@ static inline struct use_case_verb *find_verb(snd_use_case_mgr_t *uc_mgr,
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verb_name);
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}
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/**
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* \brief Find device
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* \param verb Use case verb
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* \param device_name device to find
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* \return structure on success, otherwise a NULL (not found)
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*/
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static inline struct use_case_device *
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find_device(struct use_case_verb *verb,
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const char *device_name)
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{
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return find(&verb->device_list,
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struct use_case_device, list, name,
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device_name);
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}
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/**
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* \brief Find modifier
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* \param verb Use case verb
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@ -488,20 +503,16 @@ int snd_use_case_mgr_close(snd_use_case_mgr_t *uc_mgr)
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return 0;
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}
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/**
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* \brief Reset sound card controls to default values.
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* \param uc_mgr Use case manager
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* \return zero on success, otherwise a negative error code
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/*
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* Tear down current use case verb, device and modifier.
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*/
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int snd_use_case_mgr_reset(snd_use_case_mgr_t *uc_mgr)
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static int dismantle_use_case(snd_use_case_mgr_t *uc_mgr)
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{
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struct list_head *pos, *npos;
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struct use_case_modifier *modifier;
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struct use_case_device *device;
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int err;
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pthread_mutex_lock(&uc_mgr->mutex);
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list_for_each_safe(pos, npos, &uc_mgr->active_modifiers) {
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modifier = list_entry(pos, struct use_case_modifier,
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active_list);
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@ -529,6 +540,23 @@ int snd_use_case_mgr_reset(snd_use_case_mgr_t *uc_mgr)
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err = execute_sequence(uc_mgr, &uc_mgr->default_list);
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return err;
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}
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/**
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* \brief Reset sound card controls to default values.
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* \param uc_mgr Use case manager
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* \return zero on success, otherwise a negative error code
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*/
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int snd_use_case_mgr_reset(snd_use_case_mgr_t *uc_mgr)
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{
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int err;
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pthread_mutex_lock(&uc_mgr->mutex);
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err = execute_sequence(uc_mgr, &uc_mgr->default_list);
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INIT_LIST_HEAD(&uc_mgr->active_modifiers);
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INIT_LIST_HEAD(&uc_mgr->active_devices);
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uc_mgr->active_verb = NULL;
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pthread_mutex_unlock(&uc_mgr->mutex);
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return err;
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}
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@ -950,6 +978,190 @@ long snd_use_case_geti(snd_use_case_mgr_t *uc_mgr,
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return err;
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}
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static int handle_transition_verb(snd_use_case_mgr_t *uc_mgr,
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struct use_case_verb *new_verb)
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{
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struct list_head *pos;
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struct transition_sequence *trans;
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int err;
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list_for_each(pos, &uc_mgr->active_verb->transition_list) {
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trans = list_entry(pos, struct transition_sequence, list);
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if (strcmp(trans->name, new_verb->name) == 0) {
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err = execute_sequence(uc_mgr, &trans->transition_list);
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if (err >= 0)
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return 1;
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return err;
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}
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}
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return 0;
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}
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static int set_verb_user(snd_use_case_mgr_t *uc_mgr,
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const char *verb_name)
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{
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struct use_case_verb *verb;
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int err;
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if (uc_mgr->active_verb &&
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strcmp(uc_mgr->active_verb->name, verb_name) == 0)
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return 0;
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if (strcmp(verb_name, SND_USE_CASE_VERB_INACTIVE) != 0) {
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verb = find_verb(uc_mgr, verb_name);
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if (verb == NULL)
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return -ENOENT;
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} else {
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verb = NULL;
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}
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if (uc_mgr->active_verb) {
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err = handle_transition_verb(uc_mgr, verb);
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if (err == 0) {
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err = dismantle_use_case(uc_mgr);
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if (err < 0)
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return err;
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} else if (err == 1) {
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uc_mgr->active_verb = verb;
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verb = NULL;
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} else {
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verb = NULL; /* show error */
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}
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}
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if (verb) {
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err = set_verb(uc_mgr, verb, 1);
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if (err < 0)
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uc_error("error: failed to initialize new use case: %s",
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verb_name);
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}
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return err;
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}
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static int set_device_user(snd_use_case_mgr_t *uc_mgr,
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const char *device_name,
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int enable)
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{
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struct use_case_device *device;
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if (uc_mgr->active_verb == NULL)
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return -ENOENT;
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device = find_device(uc_mgr->active_verb, device_name);
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if (device == NULL)
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return -ENOENT;
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return set_device(uc_mgr, device, enable);
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}
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static int set_modifier_user(snd_use_case_mgr_t *uc_mgr,
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const char *modifier_name,
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int enable)
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{
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struct use_case_modifier *modifier;
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if (uc_mgr->active_verb == NULL)
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return -ENOENT;
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modifier = find_modifier(uc_mgr->active_verb, modifier_name);
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if (modifier == NULL)
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return -ENOENT;
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return set_modifier(uc_mgr, modifier, enable);
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}
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static int switch_device(snd_use_case_mgr_t *uc_mgr,
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const char *old_device,
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const char *new_device)
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{
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struct use_case_device *xold, *xnew;
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struct transition_sequence *trans;
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struct list_head *pos;
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int err, seq_found = 0;
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if (uc_mgr->active_verb == NULL)
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return -ENOENT;
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if (device_status(uc_mgr, old_device) == 0) {
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uc_error("error: device %s not enabled", old_device);
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return -EINVAL;
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}
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if (device_status(uc_mgr, new_device) != 0) {
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uc_error("error: device %s already enabled", new_device);
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return -EINVAL;
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}
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xold = find_device(uc_mgr->active_verb, old_device);
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if (xold == NULL)
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return -ENOENT;
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xnew = find_device(uc_mgr->active_verb, new_device);
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if (xold == NULL)
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return -ENOENT;
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err = 0;
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list_for_each(pos, &xold->transition_list) {
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trans = list_entry(pos, struct transition_sequence, list);
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if (strcmp(trans->name, new_device) == 0) {
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err = execute_sequence(uc_mgr, &trans->transition_list);
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if (err >= 0) {
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list_del(&xold->active_list);
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list_add_tail(&xnew->active_list, &uc_mgr->active_devices);
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}
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seq_found = 1;
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break;
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}
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}
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if (!seq_found) {
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err = set_device(uc_mgr, xold, 0);
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if (err < 0)
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return err;
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err = set_device(uc_mgr, xnew, 0);
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if (err < 0)
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return err;
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}
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return err;
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}
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static int switch_modifier(snd_use_case_mgr_t *uc_mgr,
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const char *old_modifier,
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const char *new_modifier)
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{
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struct use_case_modifier *xold, *xnew;
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struct transition_sequence *trans;
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struct list_head *pos;
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int err, seq_found = 0;
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if (uc_mgr->active_verb == NULL)
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return -ENOENT;
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if (modifier_status(uc_mgr, old_modifier) == 0) {
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uc_error("error: modifier %s not enabled", old_modifier);
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return -EINVAL;
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}
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if (modifier_status(uc_mgr, new_modifier) != 0) {
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uc_error("error: modifier %s already enabled", new_modifier);
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return -EINVAL;
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}
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xold = find_modifier(uc_mgr->active_verb, old_modifier);
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if (xold == NULL)
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return -ENOENT;
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xnew = find_modifier(uc_mgr->active_verb, new_modifier);
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if (xold == NULL)
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return -ENOENT;
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err = 0;
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list_for_each(pos, &xold->transition_list) {
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trans = list_entry(pos, struct transition_sequence, list);
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if (strcmp(trans->name, new_modifier) == 0) {
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err = execute_sequence(uc_mgr, &trans->transition_list);
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if (err >= 0) {
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list_del(&xold->active_list);
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list_add_tail(&xnew->active_list, &uc_mgr->active_modifiers);
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}
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seq_found = 1;
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break;
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}
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}
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if (!seq_found) {
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err = set_modifier(uc_mgr, xold, 0);
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if (err < 0)
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return err;
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err = set_modifier(uc_mgr, xnew, 0);
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if (err < 0)
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return err;
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}
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return err;
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}
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/**
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* \brief Set new
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* \param uc_mgr Use case manager
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@ -39,12 +39,8 @@
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#include "local.h"
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#include "use-case.h"
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#define PRE_SEQ 0
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#define POST_SEQ 1
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#define MAX_FILE 256
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#define ALSA_USE_CASE_DIR ALSA_CONFIG_DIR "/ucm"
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#define ARRAY_SIZE(x) (sizeof(x)/sizeof(x[0]))
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#define VERB_NOT_INITIALISED -1
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#define SEQUENCE_ELEMENT_TYPE_CSET 1
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#define SEQUENCE_ELEMENT_TYPE_SLEEP 2
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