mirror of
https://github.com/alsa-project/alsa-utils
synced 2024-09-19 01:29:59 +02:00
alsactl: use card iterator functions for all card loops
Take the card iterator idea from the monitor code and use it for all card loops. It reduces the code duplications and makes things easy to review. Signed-off-by: Jaroslav Kysela <perex@perex.cz>
This commit is contained in:
Jaroslav Kysela
parent
9a2115b5cc
commit
eefc2c61cf
6 changed files with 131 additions and 237 deletions
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@ -1,3 +1,4 @@
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#include <stdbool.h>
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#include <alsa/asoundlib.h>
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extern int debugflag;
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@ -9,6 +10,13 @@ extern char *command;
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extern char *statefile;
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extern char *lockfile;
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struct snd_card_iterator {
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int card;
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char name[16];
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bool single;
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bool first;
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};
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void info_(const char *fcn, long line, const char *fmt, ...);
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void error_(const char *fcn, long line, const char *fmt, ...);
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void cerror_(const char *fcn, long line, int cond, const char *fmt, ...);
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@ -32,6 +40,11 @@ void error_handler(const char *file, int line, const char *function, int err, co
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#define FLAG_UCM_BOOT (1<<2)
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#define FLAG_UCM_DEFAULTS (1<<3)
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void snd_card_iterator_init(struct snd_card_iterator *iter, int cardno);
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int snd_card_iterator_sinit(struct snd_card_iterator *iter, const char *cardname);
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const char *snd_card_iterator_next(struct snd_card_iterator *iter);
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int snd_card_iterator_error(struct snd_card_iterator *iter);
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int load_configuration(const char *file, snd_config_t **top, int *open_failed);
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int init(const char *file, int flags, const char *cardname);
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int init_ucm(int flags, int cardno);
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@ -182,46 +182,15 @@ fin_err:
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int clean(const char *cardname, char *const *extra_args)
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{
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struct snd_card_iterator iter;
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int err;
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if (!cardname) {
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int card, first = 1;
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card = -1;
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/* find each installed soundcards */
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while (1) {
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if (snd_card_next(&card) < 0)
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break;
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if (card < 0) {
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if (first) {
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if (ignore_nocards) {
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err = 0;
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goto out;
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} else {
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error("No soundcards found...");
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err = -ENODEV;
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goto out;
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}
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}
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break;
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}
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first = 0;
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if ((err = clean_controls(card, extra_args)))
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goto out;
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}
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} else {
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int cardno;
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cardno = snd_card_get_index(cardname);
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if (cardno < 0) {
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error("Cannot find soundcard '%s'...", cardname);
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err = cardno;
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goto out;
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}
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if ((err = clean_controls(cardno, extra_args))) {
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goto out;
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}
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err = snd_card_iterator_sinit(&iter, cardname);
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if (err < 0)
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return err;
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while (snd_card_iterator_next(&iter)) {
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if ((err = clean_controls(iter.card, extra_args)))
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return err;
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}
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out:
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return err;
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return snd_card_iterator_error(&iter);
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}
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@ -1746,63 +1746,33 @@ static int parse(struct space *space, const char *filename)
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int init(const char *filename, int flags, const char *cardname)
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{
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struct space *space;
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int err = 0, lasterr = 0, card, first;
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struct snd_card_iterator iter;
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int err = 0, lasterr = 0;
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sysfs_init();
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if (!cardname) {
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first = 1;
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card = -1;
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while (1) {
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if (snd_card_next(&card) < 0)
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break;
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if (card < 0) {
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if (first) {
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if (ignore_nocards)
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return 0;
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error("No soundcards found...");
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return -ENODEV;
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}
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break;
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}
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first = 0;
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err = init_ucm(flags, card);
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if (err == 0)
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continue;
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err = init_space(&space, card);
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if (err == 0) {
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space->rootdir = new_root_dir(filename);
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if (space->rootdir != NULL)
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err = parse(space, filename);
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if (err <= -99) { /* non-fatal errors */
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if (lasterr == 0)
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lasterr = err;
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err = 0;
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}
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free_space(space);
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}
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if (err < 0)
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break;
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}
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err = lasterr;
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} else {
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card = snd_card_get_index(cardname);
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if (card < 0) {
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error("Cannot find soundcard '%s'...", cardname);
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goto error;
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}
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err = init_ucm(flags, card);
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err = snd_card_iterator_sinit(&iter, cardname);
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while (snd_card_iterator_next(&iter)) {
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err = init_ucm(flags, iter.card);
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if (err == 0)
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return 0;
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memset(&space, 0, sizeof(space));
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err = init_space(&space, card);
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if (err == 0) {
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space->rootdir = new_root_dir(filename);
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if (space->rootdir != NULL)
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err = parse(space, filename);
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free_space(space);
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continue;
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err = init_space(&space, iter.card);
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if (err != 0)
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continue;
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space->rootdir = new_root_dir(filename);
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if (space->rootdir != NULL) {
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err = parse(space, filename);
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if (!cardname && err <= -99) { /* non-fatal errors */
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if (lasterr == 0)
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lasterr = err;
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err = 0;
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}
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}
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free_space(space);
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if (err < 0)
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goto out;
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}
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error:
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err = lasterr ? lasterr : snd_card_iterator_error(&iter);
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out:
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sysfs_cleanup();
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return err;
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}
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@ -28,11 +28,12 @@
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#include <time.h>
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#include <signal.h>
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#include <sys/signalfd.h>
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#include <alsa/asoundlib.h>
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#include <stddef.h>
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#include "list.h"
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#include "alsactl.h"
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struct src_entry {
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snd_ctl_t *handle;
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char *name;
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@ -40,29 +41,6 @@ struct src_entry {
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struct list_head list;
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};
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struct snd_card_iterator {
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int card;
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char name[16];
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};
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void snd_card_iterator_init(struct snd_card_iterator *iter)
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{
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iter->card = -1;
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memset(iter->name, 0, sizeof(iter->name));
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}
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static const char *snd_card_iterator_next(struct snd_card_iterator *iter)
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{
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if (snd_card_next(&iter->card) < 0)
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return NULL;
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if (iter->card < 0)
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return NULL;
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snprintf(iter->name, sizeof(iter->name), "hw:%d", iter->card);
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return (const char *)iter->name;
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}
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static void remove_source_entry(struct src_entry *entry)
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{
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list_del(&entry->list);
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@ -159,7 +137,7 @@ static int prepare_source_entry(struct list_head *srcs, const char *name)
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struct snd_card_iterator iter;
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const char *cardname;
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snd_card_iterator_init(&iter);
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snd_card_iterator_init(&iter, -1);
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while ((cardname = snd_card_iterator_next(&iter))) {
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if (seek_entry_by_name(srcs, cardname))
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continue;
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155
alsactl/state.c
155
alsactl/state.c
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@ -1544,6 +1544,7 @@ int save_state(const char *file, const char *cardname)
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int stdio;
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char *nfile = NULL;
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int lock_fd = -EINVAL;
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struct snd_card_iterator iter;
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err = snd_config_top(&config);
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if (err < 0) {
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@ -1577,45 +1578,18 @@ int save_state(const char *file, const char *cardname)
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#endif
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}
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if (!cardname) {
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int card, first = 1;
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card = -1;
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/* find each installed soundcards */
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while (1) {
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if (snd_card_next(&card) < 0)
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break;
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if (card < 0) {
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if (first) {
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if (ignore_nocards) {
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err = 0;
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goto out;
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} else {
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error("No soundcards found...");
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err = -ENODEV;
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goto out;
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}
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}
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break;
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}
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first = 0;
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if ((err = get_controls(card, config)))
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goto out;
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}
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} else {
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int cardno;
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cardno = snd_card_get_index(cardname);
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if (cardno < 0) {
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error("Cannot find soundcard '%s'...", cardname);
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err = cardno;
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err = snd_card_iterator_sinit(&iter, cardname);
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if (err < 0)
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goto out;
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while (snd_card_iterator_next(&iter)) {
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if ((err = get_controls(iter.card, config)))
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goto out;
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}
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if ((err = get_controls(cardno, config))) {
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goto out;
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}
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}
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if (iter.first) {
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err = snd_card_iterator_error(&iter);
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goto out;
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}
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if (stdio) {
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err = snd_output_stdio_attach(&out, stdout, 0);
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} else {
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@ -1648,119 +1622,58 @@ int load_state(const char *file, const char *initfile, int initflags,
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const char *cardname, int do_init)
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{
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int err, finalerr = 0, open_failed;
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struct snd_card_iterator iter;
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snd_config_t *config;
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const char *cardname1;
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err = load_configuration(file, &config, &open_failed);
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if (err < 0 && !open_failed)
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return err;
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if (open_failed) {
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int card, first = 1;
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char cardname1[16];
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error("Cannot open %s for reading: %s", file, snd_strerror(err));
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finalerr = err;
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if (cardname) {
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card = snd_card_get_index(cardname);
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if (card < 0) {
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error("Cannot find soundcard '%s'...", cardname);
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err = -ENODEV;
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goto out;
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}
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goto single;
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} else {
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card = -1;
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}
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/* find each installed soundcards */
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while (!cardname) {
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if (snd_card_next(&card) < 0)
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break;
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if (card < 0)
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break;
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single:
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first = 0;
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err = snd_card_iterator_sinit(&iter, cardname);
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if (err < 0)
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return err;
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while ((cardname1 = snd_card_iterator_next(&iter)) != NULL) {
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if (!do_init)
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break;
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sprintf(cardname1, "%i", card);
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err = init(initfile, initflags | FLAG_UCM_FBOOT | FLAG_UCM_BOOT, cardname1);
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if (err < 0) {
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finalerr = err;
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initfailed(card, "init", err);
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initfailed(iter.card, "init", err);
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}
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initfailed(card, "restore", -ENOENT);
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initfailed(iter.card, "restore", -ENOENT);
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}
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if (first)
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finalerr = 0; /* no cards, no error code */
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err = finalerr;
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if (iter.first)
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err = 0; /* no cards, no error code */
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goto out;
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}
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if (!cardname) {
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int card, first = 1;
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char cardname1[16];
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card = -1;
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/* find each installed soundcards */
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while (1) {
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if (snd_card_next(&card) < 0)
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break;
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if (card < 0) {
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if (first) {
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if (ignore_nocards) {
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err = 0;
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goto out;
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} else {
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error("No soundcards found...");
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err = -ENODEV;
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goto out;
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}
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}
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break;
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}
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first = 0;
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/* error is ignored */
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init_ucm(initflags | FLAG_UCM_FBOOT, card);
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/* do a check if controls matches state file */
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if (do_init && set_controls(card, config, 0)) {
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sprintf(cardname1, "%i", card);
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err = init(initfile, initflags | FLAG_UCM_BOOT, cardname1);
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if (err < 0) {
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initfailed(card, "init", err);
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finalerr = err;
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}
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}
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if ((err = set_controls(card, config, 1))) {
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if (!force_restore)
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finalerr = err;
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initfailed(card, "restore", err);
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}
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}
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} else {
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int cardno;
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cardno = snd_card_get_index(cardname);
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if (cardno < 0) {
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error("Cannot find soundcard '%s'...", cardname);
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err = -ENODEV;
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goto out;
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}
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err = snd_card_iterator_sinit(&iter, cardname);
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if (err < 0)
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goto out;
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while ((cardname1 = snd_card_iterator_next(&iter)) != NULL) {
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/* error is ignored */
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init_ucm(initflags | FLAG_UCM_FBOOT, cardno);
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init_ucm(initflags | FLAG_UCM_FBOOT, iter.card);
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/* do a check if controls matches state file */
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if (do_init && set_controls(cardno, config, 0)) {
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err = init(initfile, initflags | FLAG_UCM_BOOT, cardname);
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if (do_init && set_controls(iter.card, config, 0)) {
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err = init(initfile, initflags | FLAG_UCM_BOOT, cardname1);
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if (err < 0) {
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initfailed(cardno, "init", err);
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initfailed(iter.card, "init", err);
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finalerr = err;
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}
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}
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if ((err = set_controls(cardno, config, 1))) {
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initfailed(cardno, "restore", err);
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if ((err = set_controls(iter.card, config, 1))) {
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if (!force_restore)
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goto out;
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finalerr = err;
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initfailed(iter.card, "restore", err);
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}
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}
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err = finalerr;
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err = finalerr ? finalerr : snd_card_iterator_error(&iter);
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out:
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snd_config_delete(config);
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snd_config_update_free_global();
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@ -233,3 +233,54 @@ out:
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return 0;
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}
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}
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void snd_card_iterator_init(struct snd_card_iterator *iter, int cardno)
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{
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iter->card = cardno;
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iter->single = cardno >= 0;
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iter->first = true;
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iter->name[0] = '\0';
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}
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int snd_card_iterator_sinit(struct snd_card_iterator *iter, const char *cardname)
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{
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int cardno = -1;
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if (cardname) {
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cardno = snd_card_get_index(cardname);
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if (cardno < 0) {
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error("Cannot find soundcard '%s'...", cardname);
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return cardno;
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}
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}
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snd_card_iterator_init(iter, cardno);
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return 0;
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}
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const char *snd_card_iterator_next(struct snd_card_iterator *iter)
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{
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if (iter->single) {
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if (iter->first) {
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iter->first = false;
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goto retval;
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}
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return NULL;
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}
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if (snd_card_next(&iter->card) < 0) {
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if (!ignore_nocards && iter->first)
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error("No soundcards found...");
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return NULL;
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}
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iter->first = false;
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if (iter->card < 0)
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return NULL;
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retval:
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snprintf(iter->name, sizeof(iter->name), "hw:%d", iter->card);
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return (const char *)iter->name;
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}
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int snd_card_iterator_error(struct snd_card_iterator *iter)
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{
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return iter->first ? (ignore_nocards ? 0 : -ENODEV) : 0;
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}
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