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alsaucm: add also card index for '-c' argument

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Make semantics for this argument in sync with other ALSA utilities.

Signed-off-by: Jaroslav Kysela <perex@perex.cz>
This commit is contained in:
Jaroslav Kysela 2023-02-27 12:54:49 +01:00
parent dad2161d3c
commit 58f92d6175
1 changed files with 23 additions and 0 deletions
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23
alsaucm/usecase.c
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@ -123,6 +123,20 @@ static void dump_help(struct context *context)
); );
} }
int is_long(const char *str)
{
char *end;
if (!*str)
return 0;
errno = 0;
strtol(str, &end, 10);
if (errno)
return 0;
if (*end)
return 0;
return 1;
}
static int parse_line(struct context *context, char *line) static int parse_line(struct context *context, char *line)
{ {
char *start, **nargv; char *start, **nargv;
@ -202,6 +216,15 @@ static void do_initial_open(struct context *context)
/* open library */ /* open library */
if (!context->no_open) { if (!context->no_open) {
if (is_long(context->card)) {
snprintf(name, sizeof(name), "hw:%s", context->card);
free(context->card);
context->card = strdup(name);
}
if (context->card == NULL) {
fprintf(stderr, "%s: empty card name\n", context->command);
my_exit(context, EXIT_FAILURE);
}
err = snd_use_case_mgr_open(&context->uc_mgr, err = snd_use_case_mgr_open(&context->uc_mgr,
context->card); context->card);
if (err < 0) { if (err < 0) {