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sndio
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Check if the device supports playing/recording. 

From Tobias Kortkamp <tobik@FreeBSD.org>. Thanks.
This commit is contained in:
Alexandre Ratchov 2018-01-15 18:30:21 +01:00
parent 2de5100143
commit a81ef2709a
1 changed files with 15 additions and 0 deletions
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15
libsndio/sio_oss.c
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@ -264,6 +264,21 @@ sio_oss_getfd(const char *str, unsigned int mode, int nbio)
DPERROR(path);
return -1;
}
/*
* Check if the device supports playing/recording.
* Unfortunately, it's possible for devices to be opened RDWR
* even when they don't support playing/recording.
*/
if (mode & SIO_PLAY && ioctl(fd, SNDCTL_DSP_GETOSPACE, &bi) < 0) {
close(fd);
return -1;
}
if (mode & SIO_REC && ioctl(fd, SNDCTL_DSP_GETISPACE, &bi) < 0) {
close(fd);
return -1;
}
val = 1;
if (ioctl(fd, SNDCTL_DSP_LOW_WATER, &val) < 0) {
DPERROR("sio_oss_start: LOW_WATER");