48 	if (ioctl(dev->parent_mixer->fd, MIXER_READ(dev->devno), &v) < 0)  in _mixer_readvol()
50 	dev->vol.left = MIX_VOLNORM(v & 0x00ff);  in _mixer_readvol()
51 	dev->vol.right = MIX_VOLNORM((v >> 8) & 0x00ff);  in _mixer_readvol()
53 	return (0);  in _mixer_readvol()
67 	struct mixer *m = NULL;  in mixer_open()  local
72 	if ((m = calloc(1, sizeof(struct mixer))) == NULL)  in mixer_open()
77 		if (strncmp(name, BASEPATH, strlen(BASEPATH)) != 0) {  in mixer_open()
78 			m->unit = -1;  in mixer_open()
81 			if (strncmp(name, BASEPATH, strlen(name)) == 0)  in mixer_open()
83 			m->unit = strtol(name + strlen(BASEPATH), NULL, 10);  in mixer_open()
85 		(void)strlcpy(m->name, name, sizeof(m->name));  in mixer_open()
88 		if ((m->unit = mixer_get_dunit()) < 0)  in mixer_open()
90 		(void)snprintf(m->name, sizeof(m->name), BASEPATH "%d", m->unit);  in mixer_open()
93 	if ((m->fd = open(m->name, O_RDWR)) < 0)  in mixer_open()
96 	m->devmask = m->recmask = m->recsrc = 0;  in mixer_open()
97 	m->f_default = m->unit == mixer_get_dunit();  in mixer_open()
98 	m->mode = mixer_get_mode(m->unit);  in mixer_open()
100 	m->mi.dev = m->unit;  in mixer_open()
101 	m->ci.card = m->unit;  in mixer_open()
102 	if (ioctl(m->fd, SNDCTL_MIXERINFO, &m->mi) < 0) {  in mixer_open()
103 		memset(&m->mi, 0, sizeof(m->mi));  in mixer_open()
104 		strlcpy(m->mi.name, m->name, sizeof(m->mi.name));  in mixer_open()
106 	if (ioctl(m->fd, SNDCTL_CARDINFO, &m->ci) < 0)  in mixer_open()
107 		memset(&m->ci, 0, sizeof(m->ci));  in mixer_open()
108 	if (ioctl(m->fd, SOUND_MIXER_READ_DEVMASK, &m->devmask) < 0 ||  in mixer_open()
109 	    ioctl(m->fd, SOUND_MIXER_READ_MUTE, &m->mutemask) < 0 ||  in mixer_open()
110 	    ioctl(m->fd, SOUND_MIXER_READ_RECMASK, &m->recmask) < 0 ||  in mixer_open()
111 	    ioctl(m->fd, SOUND_MIXER_READ_RECSRC, &m->recsrc) < 0)  in mixer_open()
114 	TAILQ_INIT(&m->devs);  in mixer_open()
115 	for (i = 0; i < SOUND_MIXER_NRDEVICES; i++) {  in mixer_open()
116 		if (!MIX_ISDEV(m, i))  in mixer_open()
120 		dp->parent_mixer = m;  in mixer_open()
122 		dp->nctl = 0;  in mixer_open()
123 		if (_mixer_readvol(dp) < 0)  in mixer_open()
127 		TAILQ_INSERT_TAIL(&m->devs, dp, devs);  in mixer_open()
128 		m->ndev++;  in mixer_open()
132 	m->dev = TAILQ_FIRST(&m->devs);  in mixer_open()
134 	return (m);  in mixer_open()
136 	if (m != NULL)  in mixer_open()
137 		(void)mixer_close(m);  in mixer_open()
146 mixer_close(struct mixer *m)  in mixer_close()  argument
151 	r = close(m->fd);  in mixer_close()
152 	while (!TAILQ_EMPTY(&m->devs)) {  in mixer_close()
153 		dp = TAILQ_FIRST(&m->devs);  in mixer_close()
154 		TAILQ_REMOVE(&m->devs, dp, devs);  in mixer_close()
159 	free(m);  in mixer_close()
170  * The caller must manually assign the return value to `m->dev`.
173 mixer_get_dev(struct mixer *m, int dev)  in mixer_get_dev()  argument
177 	if (dev < 0 || dev >= m->ndev) {  in mixer_get_dev()
181 	TAILQ_FOREACH(dp, &m->devs, devs) {  in mixer_get_dev()
196 mixer_get_dev_byname(struct mixer *m, const char *name)  in mixer_get_dev_byname()  argument
200 	TAILQ_FOREACH(dp, &m->devs, devs) {  in mixer_get_dev_byname()
244 	return (0);  in mixer_add_ctl()
278 	return (0);  in mixer_remove_ctl()
318  * an integer value between 0 and 100 stored as `lvol | rvol << 8` --  for
325 mixer_set_vol(struct mixer *m, mix_volume_t vol)  in mixer_set_vol()  argument
335 	if (ioctl(m->fd, MIXER_WRITE(m->dev->devno), &v) < 0)  in mixer_set_vol()
337 	if (_mixer_readvol(m->dev) < 0)  in mixer_set_vol()
340 	return (0);  in mixer_set_vol()
351 mixer_set_mute(struct mixer *m, int opt)  in mixer_set_mute()  argument
355 		m->mutemask |= (1 << m->dev->devno);  in mixer_set_mute()
358 		m->mutemask &= ~(1 << m->dev->devno);  in mixer_set_mute()
361 		m->mutemask ^= (1 << m->dev->devno);  in mixer_set_mute()
367 	if (ioctl(m->fd, SOUND_MIXER_WRITE_MUTE, &m->mutemask) < 0)  in mixer_set_mute()
369 	if (ioctl(m->fd, SOUND_MIXER_READ_MUTE, &m->mutemask) < 0)  in mixer_set_mute()
372 	return 0;  in mixer_set_mute()
385 mixer_mod_recsrc(struct mixer *m, int opt)  in mixer_mod_recsrc()  argument
387 	if (!m->recmask || !MIX_ISREC(m, m->dev->devno)) {  in mixer_mod_recsrc()
393 		m->recsrc |= (1 << m->dev->devno);  in mixer_mod_recsrc()
396 		m->recsrc &= ~(1 << m->dev->devno);  in mixer_mod_recsrc()
399 		m->recsrc = (1 << m->dev->devno);  in mixer_mod_recsrc()
402 		m->recsrc ^= (1 << m->dev->devno);  in mixer_mod_recsrc()
408 	if (ioctl(m->fd, SOUND_MIXER_WRITE_RECSRC, &m->recsrc) < 0)  in mixer_mod_recsrc()
410 	if (ioctl(m->fd, SOUND_MIXER_READ_RECSRC, &m->recsrc) < 0)  in mixer_mod_recsrc()
413 	return (0);  in mixer_mod_recsrc()
427 	if (sysctlbyname("hw.snd.default_unit", &unit, &size, NULL, 0) < 0)  in mixer_get_dunit()
441 mixer_set_dunit(struct mixer *m, int unit)  in mixer_set_dunit()  argument
446 	if (sysctlbyname("hw.snd.default_unit", NULL, 0, &unit, size) < 0)  in mixer_set_dunit()
449 	m->f_default = m->unit == unit;  in mixer_set_dunit()
451 	return (0);  in mixer_set_dunit()
467 	if (sysctlbyname(buf, &mode, &size, NULL, 0) < 0)  in mixer_get_mode()
468 		return (0);  in mixer_get_mode()
479 	struct mixer *m;  in mixer_get_nmixers()  local
486 	if ((m = mixer_open(NULL)) == NULL)  in mixer_get_nmixers()
488 	if (ioctl(m->fd, OSS_SYSINFO, &si) < 0) {  in mixer_get_nmixers()
489 		(void)mixer_close(m);  in mixer_get_nmixers()
492 	(void)mixer_close(m);  in mixer_get_nmixers()
505 	if (!(unit == -1 || (unit >= 0 && unit < mixer_get_nmixers()))) {  in mixer_get_path()
519 	return (0);  in mixer_get_path()