/** Array of error strings. */
DEFINE_PARA_ERRLIST;
-enum mixer_id {MIXER_ENUM};
-static char *mixer_name[] = {MIXER_NAMES};
-DECLARE_MIXER_INITS;
-static struct mixer supported_mixer[] = {MIXER_ARRAY};
+/* At least one of the two is defined if this file gets compiled. */
+static const struct mixer *mixers[] = {
+#ifdef HAVE_ALSA
+ &alsa_mixer,
+#endif
+#ifdef HAVE_OSS
+ &oss_mixer,
+#endif
+};
+
+#define NUM_SUPPORTED_MIXERS (ARRAY_SIZE(mixers))
#define FOR_EACH_MIXER(i) for ((i) = 0; (i) < NUM_SUPPORTED_MIXERS; (i)++)
static struct lls_parse_result *lpr, *sub_lpr;
#define OPT_STRING_VAL(_cmd, _opt) (lls_string_val(0, OPT_RESULT(_cmd, _opt)))
#define OPT_UINT32_VAL(_cmd, _opt) (lls_uint32_val(0, OPT_RESULT(_cmd, _opt)))
-typedef int (*mixer_subcommand_handler_t)(struct mixer *, struct mixer_handle *);
+typedef int (*mixer_subcommand_handler_t)(const struct mixer *, struct mixer_handle *);
#define EXPORT_CMD(_cmd) const mixer_subcommand_handler_t \
lsg_mixer_com_ ## _cmd ## _user_data = &com_ ## _cmd;
}
__printf_2_3 void (*para_log)(int, const char*, ...) = date_log;
-static int set_channel(struct mixer *m, struct mixer_handle *h, const char *channel)
+static int set_channel(const struct mixer *m, struct mixer_handle *h,
+ const char *channel)
{
PARA_NOTICE_LOG("using %s mixer channel\n", channel?
}
/* Fade to new volume in fade_time seconds. */
-static int fade(struct mixer *m, struct mixer_handle *h, uint32_t new_vol,
+static int fade(const struct mixer *m, struct mixer_handle *h, uint32_t new_vol,
uint32_t fade_time)
{
int i, T, old_vol, ret, slept, incr;
return ret;
}
-static int com_fade(struct mixer *m, struct mixer_handle *h)
+static int com_fade(const struct mixer *m, struct mixer_handle *h)
{
uint32_t new_vol = OPT_UINT32_VAL(FADE, FADE_VOL);
uint32_t fade_time = OPT_UINT32_VAL(FADE, FADE_TIME);
free(cmd);
}
-static int set_initial_volume(struct mixer *m, struct mixer_handle *h)
+static int set_initial_volume(const struct mixer *m, struct mixer_handle *h)
{
int i, ret;
return 1;
}
-static int com_sleep(struct mixer *m, struct mixer_handle *h)
+static int com_sleep(const struct mixer *m, struct mixer_handle *h)
{
time_t t1, wake_time_epoch;
unsigned int delay;
}
EXPORT_CMD(sleep);
-static int com_snooze(struct mixer *m, struct mixer_handle *h)
+static int com_snooze(const struct mixer *m, struct mixer_handle *h)
{
int ret, val;
}
EXPORT_CMD(snooze);
-static void init_mixers(void)
-{
- int i;
-
- FOR_EACH_MIXER(i) {
- struct mixer *m = &supported_mixer[i];
- PARA_DEBUG_LOG("initializing mixer API #%d (%s)\n",
- i, mixer_name[i]);
- m->init(m);
- }
-}
-
-static int com_set(struct mixer *m, struct mixer_handle *h)
+static int com_set(const struct mixer *m, struct mixer_handle *h)
{
return m->set(h, OPT_UINT32_VAL(SET, VAL));
}
EXPORT_CMD(set);
-static struct mixer *get_mixer_or_die(void)
+static const struct mixer *get_mixer_or_die(void)
{
int i;
if (!OPT_GIVEN(PARA_MIXER, MIXER_API))
- i = DEFAULT_MIXER;
+ i = 0; /* default: use first mixer */
else
FOR_EACH_MIXER(i)
- if (!strcmp(mixer_name[i],
+ if (!strcmp(mixers[i]->name,
OPT_STRING_VAL(PARA_MIXER, MIXER_API)))
break;
if (i < NUM_SUPPORTED_MIXERS) {
- PARA_NOTICE_LOG("using %s mixer API\n", mixer_name[i]);
- return supported_mixer + i;
+ PARA_NOTICE_LOG("using %s mixer API\n", mixers[i]->name);
+ return mixers[i];
}
printf("available mixer APIs: ");
- FOR_EACH_MIXER(i) {
- int d = (i == DEFAULT_MIXER);
- printf("%s%s%s ", d? "[" : "", mixer_name[i], d? "]" : "");
- }
+ FOR_EACH_MIXER(i)
+ printf("%s%s%s ", i == 0? "[" : "", mixers[i]->name,
+ i == 0? "]" : "");
printf("\n");
exit(EXIT_FAILURE);
}
}
-static int com_help(__a_unused struct mixer *m, __a_unused struct mixer_handle *h)
+static int com_help(__a_unused const struct mixer *m,
+ __a_unused struct mixer_handle *h)
{
const struct lls_command *cmd;
const struct lls_opt_result *r_l = OPT_RESULT(HELP, LONG);
int ret;
char *errctx;
const char *subcmd;
- struct mixer *m;
+ const struct mixer *m;
struct mixer_handle *h;
unsigned n;
ret = parse_and_merge_config_file(cmd);
if (ret < 0)
goto free_lpr;
- init_mixers();
m = get_mixer_or_die();
ret = m->open(OPT_STRING_VAL(PARA_MIXER, MIXER_DEVICE), &h);
if (ret < 0)