mixer(3): Add support for controlling mixer mute and volume on feeder channels.
PR: 258711 Reported by: jbeich@FreeBSD.org Differential Revision: https://reviews.freebsd.org/D31636 Sponsored by: NVIDIA Networking
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4a83ca1078
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3984400149
@ -77,13 +77,13 @@ mixer_open(const char *name)
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if (name != NULL) {
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/* `name` does not start with "/dev/mixer". */
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if (strncmp(name, BASEPATH, strlen(BASEPATH)) != 0) {
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errno = EINVAL;
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goto fail;
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m->unit = -1;
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} else {
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/* `name` is "/dev/mixer" so, we'll use the default unit. */
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if (strncmp(name, BASEPATH, strlen(name)) == 0)
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goto dunit;
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m->unit = strtol(name + strlen(BASEPATH), NULL, 10);
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}
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/* `name` is "/dev/mixer" so, we'll use the default unit. */
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if (strncmp(name, BASEPATH, strlen(name)) == 0)
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goto dunit;
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m->unit = strtol(name + strlen(BASEPATH), NULL, 10);
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(void)strlcpy(m->name, name, sizeof(m->name));
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} else {
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dunit:
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@ -101,9 +101,13 @@ mixer_open(const char *name)
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/* The unit number _must_ be set before the ioctl. */
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m->mi.dev = m->unit;
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m->ci.card = m->unit;
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if (ioctl(m->fd, SNDCTL_MIXERINFO, &m->mi) < 0 ||
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ioctl(m->fd, SNDCTL_CARDINFO, &m->ci) < 0 ||
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ioctl(m->fd, SOUND_MIXER_READ_DEVMASK, &m->devmask) < 0 ||
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if (ioctl(m->fd, SNDCTL_MIXERINFO, &m->mi) < 0) {
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memset(&m->mi, 0, sizeof(m->mi));
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strlcpy(m->mi.name, m->name, sizeof(m->mi.name));
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}
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if (ioctl(m->fd, SNDCTL_CARDINFO, &m->ci) < 0)
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memset(&m->ci, 0, sizeof(m->ci));
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if (ioctl(m->fd, SOUND_MIXER_READ_DEVMASK, &m->devmask) < 0 ||
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ioctl(m->fd, SOUND_MIXER_READ_MUTE, &m->mutemask) < 0 ||
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ioctl(m->fd, SOUND_MIXER_READ_RECMASK, &m->recmask) < 0 ||
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ioctl(m->fd, SOUND_MIXER_READ_RECSRC, &m->recsrc) < 0)
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@ -463,7 +467,7 @@ mixer_get_mode(int unit)
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(void)snprintf(buf, sizeof(buf), "dev.pcm.%d.mode", unit);
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size = sizeof(unsigned int);
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if (sysctlbyname(buf, &mode, &size, NULL, 0) < 0)
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return (-1);
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return (0);
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return (mode);
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}
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