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Extend snd_card_get_index() to accept also control device name like /dev/snd/controlC0

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Signed-off-by: Jaroslav Kysela <perex@perex.cz>
This commit is contained in:
Jaroslav Kysela 2009-05-12 08:06:41 +02:00
parent 3e30007a19
commit 33ab0b5381
1 changed files with 28 additions and 13 deletions
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39
src/control/cards.c
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@ -39,29 +39,42 @@
#define SND_FILE_LOAD ALOAD_DEVICE_DIRECTORY "aloadC%i" #define SND_FILE_LOAD ALOAD_DEVICE_DIRECTORY "aloadC%i"
#endif #endif
static int snd_card_load1(int card) static int snd_card_load2(const char *control)
{ {
int open_dev; int open_dev;
char control[sizeof(SND_FILE_CONTROL) + 10]; snd_ctl_card_info_t info;
sprintf(control, SND_FILE_CONTROL, card);
open_dev = snd_open_device(control, O_RDONLY); open_dev = snd_open_device(control, O_RDONLY);
#ifdef SUPPORT_ALOAD
if (open_dev < 0) {
char aload[sizeof(SND_FILE_LOAD) + 10];
sprintf(aload, SND_FILE_LOAD, card);
open_dev = snd_open_device(aload, O_RDONLY);
}
#endif
if (open_dev >= 0) { if (open_dev >= 0) {
if (ioctl(open_dev, SNDRV_CTL_IOCTL_CARD_INFO, &info) < 0) {
int err = -errno;
close(open_dev); close(open_dev);
return 0; return err;
}
close(open_dev);
return info.card;
} else { } else {
return -errno; return -errno;
} }
} }
static int snd_card_load1(int card)
{
int res;
char control[sizeof(SND_FILE_CONTROL) + 10];
sprintf(control, SND_FILE_CONTROL, card);
res = snd_card_load2(control);
#ifdef SUPPORT_ALOAD
if (res < 0) {
char aload[sizeof(SND_FILE_LOAD) + 10];
sprintf(aload, SND_FILE_LOAD, card);
res = snd_card_load2(aload);
}
#endif
return res;
}
/** /**
* \brief Try to load the driver for a card. * \brief Try to load the driver for a card.
* \param card Card number. * \param card Card number.
@ -127,6 +140,8 @@ int snd_card_get_index(const char *string)
return card; return card;
return err; return err;
} }
if (string[0] == '/') /* device name */
return snd_card_load2(string);
for (card = 0; card < 32; card++) { for (card = 0; card < 32; card++) {
#ifdef SUPPORT_ALOAD #ifdef SUPPORT_ALOAD
if (! snd_card_load(card)) if (! snd_card_load(card))