39 struct card {  struct
78 static void card_free(struct card **card)  in card_free()  argument
80 	struct card *c = *card;  in card_free()
87 	*card = NULL;  in card_free()
90 static void add_card(struct card ***cards, int *count, const char *cardname)  in add_card()
92 	struct card *card, **cc;  in add_card()  local
107 	card = calloc(1, sizeof(*card));  in add_card()
108 	if (card == NULL)  in add_card()
110 	card->index = index;  in add_card()
112 	if (snd_ctl_open(&card->handle, device, SND_CTL_READONLY|SND_CTL_NONBLOCK) < 0) {  in add_card()
113 		card_free(&card);  in add_card()
116 	card->pfds = snd_ctl_poll_descriptors_count(card->handle);  in add_card()
117 	if (card->pfds < 0) {  in add_card()
118 		card_free(&card);  in add_card()
121 	if (snd_ctl_subscribe_events(card->handle, 1) < 0) {  in add_card()
122 		card_free(&card);  in add_card()
126 		(*cards)[findex] = card;  in add_card()
130 			card_free(&card);  in add_card()
133 		cc[*count] = card;  in add_card()
139 static void add_cards(struct card ***cards, int *count)  in add_cards()
141 	int card = -1;  in add_cards()  local
145 		if (snd_card_next(&card) < 0)  in add_cards()
147 		if (card < 0)  in add_cards()
149 		if (card >= 0) {  in add_cards()
150 			sprintf(cardname, "%i", card);  in add_cards()
217 static int check_lists(struct card *card, snd_ctl_elem_id_t *id)  in check_lists()  argument
222 	if (in_list(&card->blacklist, id))  in check_lists()
224 	if (in_list(&card->whitelist, id))  in check_lists()
227 	if (snd_ctl_elem_info(card->handle, info) < 0)  in check_lists()
231 		add_to_list(&card->whitelist, id);  in check_lists()
234 		add_to_list(&card->blacklist, id);  in check_lists()
239 static int card_events(struct card *card)  in card_events()  argument
249 	while (snd_ctl_read(card->handle, ev) == 1) {  in card_events()
256 			remove_from_list(&card->whitelist, id);  in card_events()
257 			remove_from_list(&card->blacklist, id);  in card_events()
261 			remove_from_list(&card->whitelist, id);  in card_events()
262 			remove_from_list(&card->blacklist, id);  in card_events()
267 			if (check_lists(card, id))  in card_events()
365 	struct card **cards = NULL;  in state_daemon()