alsa-utils/alsactl/alsactl.h
Jaroslav Kysela bbc74a61ac alsactl: implement 'info' command
It may be useful to collect the basic sound card information.
The output is in the YAML structured syntax (human and machine readable).

Signed-off-by: Jaroslav Kysela <perex@perex.cz>
2022-05-10 09:08:26 +02:00

92 lines
3.4 KiB
C

#include <stdbool.h>
#include <alsa/asoundlib.h>
#define LOCK_TIMEOUT 10
extern int debugflag;
extern int force_restore;
extern int ignore_nocards;
extern int do_lock;
extern int use_syslog;
extern char *command;
extern char *statefile;
extern char *lockpath;
extern char *lockfile;
struct snd_card_iterator {
int card;
char name[16];
bool single;
bool first;
};
void info_(const char *fcn, long line, const char *fmt, ...);
void error_(const char *fcn, long line, const char *fmt, ...);
void cerror_(const char *fcn, long line, int cond, const char *fmt, ...);
void dbg_(const char *fcn, long line, const char *fmt, ...);
void error_handler(const char *file, int line, const char *function, int err, const char *fmt, ...);
#if __GNUC__ > 2 || (__GNUC__ == 2 && __GNUC_MINOR__ >= 95)
#define info(...) do { info_(__func__, __LINE__, __VA_ARGS__); } while (0)
#define error(...) do { error_(__func__, __LINE__, __VA_ARGS__); } while (0)
#define cerror(cond, ...) do { cerror_(__func__, __LINE__, (cond) != 0, __VA_ARGS__); } while (0)
#define dbg(...) do { dbg_(__func__, __LINE__, __VA_ARGS__); } while (0)
#else
#define info(args...) do { info_(__func__, __LINE__, ##args); } while (0)
#define error(args...) do { error_(__func__, __LINE__, ##args); } while (0)
#define cerror(cond, ...) do { error_(__func__, __LINE__, (cond) != 0, ##args); } while (0)
#define dbg(args...) do { dbg_(__func__, __LINE__, ##args); } while (0)
#endif
#define FLAG_UCM_DISABLED (1<<0)
#define FLAG_UCM_FBOOT (1<<1)
#define FLAG_UCM_BOOT (1<<2)
#define FLAG_UCM_DEFAULTS (1<<3)
#define FLAG_UCM_NODEV (1<<4)
void snd_card_iterator_init(struct snd_card_iterator *iter, int cardno);
int snd_card_iterator_sinit(struct snd_card_iterator *iter, const char *cardname);
const char *snd_card_iterator_next(struct snd_card_iterator *iter);
int snd_card_iterator_error(struct snd_card_iterator *iter);
int load_configuration(const char *file, snd_config_t **top, int *open_failed);
int init(const char *cfgdir, const char *file, int flags, const char *cardname);
int init_ucm(int flags, int cardno);
int state_lock(const char *file, int timeout);
int state_unlock(int lock_fd, const char *file);
int card_lock(int card_number, int timeout);
int card_unlock(int lock_fd, int card_number);
int save_state(const char *file, const char *cardname);
int load_state(const char *cfgdir, const char *file,
const char *initfile, int initflags,
const char *cardname, int do_init);
int power(const char *argv[], int argc);
int monitor(const char *name);
int general_info(const char *name);
int state_daemon(const char *file, const char *cardname, int period,
const char *pidfile);
int state_daemon_kill(const char *pidfile, const char *cmd);
int clean(const char *cardname, char *const *extra_args);
int snd_card_clean_cfgdir(const char *cfgdir, int cardno);
/* utils */
int file_map(const char *filename, char **buf, size_t *bufsize);
void file_unmap(void *buf, size_t bufsize);
size_t line_width(const char *buf, size_t bufsize, size_t pos);
void initfailed(int cardnumber, const char *reason, int exitcode);
static inline int hextodigit(int c)
{
if (c >= '0' && c <= '9')
c -= '0';
else if (c >= 'a' && c <= 'f')
c = c - 'a' + 10;
else if (c >= 'A' && c <= 'F')
c = c - 'A' + 10;
else
return -1;
return c;
}
#define ARRAY_SIZE(a) (sizeof (a) / sizeof (a)[0])