#include <dev/sound/pcm/sound.h>
#include "feeder_if.h"
#include "mixer_if.h"

Include dependency graph for mixer.c:

Data Structures
struct	snd_mixer

Macros
#define	MIXER_NAMELEN 16

#define	MIXER_SET_UNLOCK(x, y)

#define	MIXER_SET_LOCK(x, y)

Functions
	SND_DECLARE_FILE ("$FreeBSD$")

static	MALLOC_DEFINE (M_MIXER, "mixer", "mixer")

	SYSCTL_INT (_hw_snd, OID_AUTO, vpc_mixer_bypass, CTLFLAG_RWTUN, &mixer_bypass, 0, "control channel pcm/rec volume, bypassing real mixer device")

static struct cdev *	mixer_get_devt (device_t dev)

static int	mixer_lookup (char *devname)

static int	mixer_set_softpcmvol (struct snd_mixer m, struct snddev_info d, u_int left, u_int right)

static int	mixer_set_eq (struct snd_mixer m, struct snddev_info d, u_int dev, u_int level)

static int	mixer_set (struct snd_mixer *m, u_int dev, u_int32_t muted, u_int lev)

static int	mixer_get (struct snd_mixer *mixer, int dev)

void	mix_setmutedevs (struct snd_mixer *mixer, u_int32_t mutedevs)

static int	mixer_setrecsrc (struct snd_mixer *mixer, u_int32_t src)

static int	mixer_getrecsrc (struct snd_mixer *mixer)

static int	mixer_get_recroute (struct snd_mixer m, int route)
	Retrieve the route number of the current recording device. More...

static int	mixer_set_recroute (struct snd_mixer *m, int route)
	Select a device for recording. More...

void	mix_setdevs (struct snd_mixer *m, u_int32_t v)

void	mix_setrecdevs (struct snd_mixer *m, u_int32_t v)
	Record mask of available recording devices. More...

void	mix_setparentchild (struct snd_mixer *m, u_int32_t parent, u_int32_t childs)

void	mix_setrealdev (struct snd_mixer *m, u_int32_t dev, u_int32_t realdev)

u_int32_t	mix_getparent (struct snd_mixer *m, u_int32_t dev)

u_int32_t	mix_getchild (struct snd_mixer *m, u_int32_t dev)

u_int32_t	mix_getdevs (struct snd_mixer *m)

u_int32_t	mix_getmutedevs (struct snd_mixer *m)

u_int32_t	mix_getrecdevs (struct snd_mixer *m)

void *	mix_getdevinfo (struct snd_mixer *m)

static struct snd_mixer *	mixer_obj_create (device_t dev, kobj_class_t cls, void devinfo, int type, const char desc)

int	mixer_delete (struct snd_mixer *m)

struct snd_mixer *	mixer_create (device_t dev, kobj_class_t cls, void devinfo, const char desc)

int	mixer_init (device_t dev, kobj_class_t cls, void *devinfo)

int	mixer_uninit (device_t dev)

int	mixer_reinit (device_t dev)

static int	sysctl_hw_snd_hwvol_mixer (SYSCTL_HANDLER_ARGS)

int	mixer_hwvol_init (device_t dev)

void	mixer_hwvol_mute_locked (struct snd_mixer *m)

void	mixer_hwvol_mute (device_t dev)

void	mixer_hwvol_step_locked (struct snd_mixer *m, int left_step, int right_step)

void	mixer_hwvol_step (device_t dev, int left_step, int right_step)

int	mixer_busy (struct snd_mixer *m)

int	mix_set (struct snd_mixer *m, u_int dev, u_int left, u_int right)

int	mix_get (struct snd_mixer *m, u_int dev)

int	mix_setrecsrc (struct snd_mixer *m, u_int32_t src)

u_int32_t	mix_getrecsrc (struct snd_mixer *m)

int	mix_get_type (struct snd_mixer *m)

device_t	mix_get_dev (struct snd_mixer *m)

static int	mixer_open (struct cdev i_dev, int flags, int mode, struct thread td)

static int	mixer_close (struct cdev i_dev, int flags, int mode, struct thread td)

static int	mixer_ioctl_channel (struct cdev dev, u_long cmd, caddr_t arg, int mode, struct thread td, int from)

static int	mixer_ioctl (struct cdev i_dev, u_long cmd, caddr_t arg, int mode, struct thread td)

static void	mixer_mixerinfo (struct snd_mixer m, mixer_info mi)

int	mixer_ioctl_cmd (struct cdev i_dev, u_long cmd, caddr_t arg, int mode, struct thread td, int from)

static void	mixer_clone (void arg, struct ucred cred, char name, int namelen, struct cdev *dev)

static void	mixer_sysinit (void *p)

static void	mixer_sysuninit (void *p)

	SYSINIT (mixer_sysinit, SI_SUB_DRIVERS, SI_ORDER_MIDDLE, mixer_sysinit, NULL)

	SYSUNINIT (mixer_sysuninit, SI_SUB_DRIVERS, SI_ORDER_MIDDLE, mixer_sysuninit, NULL)

int	mixer_oss_mixerinfo (struct cdev i_dev, oss_mixerinfo mi)
	Handler for SNDCTL_MIXERINFO. More...

struct mtx *	mixer_get_lock (struct snd_mixer *m)

int	mix_get_locked (struct snd_mixer m, u_int dev, int pleft, int *pright)

int	mix_set_locked (struct snd_mixer *m, u_int dev, int left, int right)

Variables
static int	mixer_bypass = 1

static u_int16_t	snd_mixerdefaults [SOUND_MIXER_NRDEVICES]

static char *	snd_mixernames [SOUND_MIXER_NRDEVICES] = SOUND_DEVICE_NAMES

static d_open_t	mixer_open

static d_close_t	mixer_close

static d_ioctl_t	mixer_ioctl

static struct cdevsw	mixer_cdevsw

int	mixer_count = 0

static eventhandler_tag	mixer_ehtag = NULL

Macro Definition Documentation

◆ MIXER_NAMELEN

#define MIXER_NAMELEN 16

Definition at line 49 of file mixer.c.

◆ MIXER_SET_LOCK

#define MIXER_SET_LOCK	(	x,
		y
	)

Value:

        do {                            \
        if ((y) != 0)                                                   \
                snd_mtxlock((x)->lock);                                 \
} while (0)

Definition at line 144 of file mixer.c.

◆ MIXER_SET_UNLOCK

#define MIXER_SET_UNLOCK	(	x,
		y
	)

Value:

        do {                            \
        if ((y) != 0)                                                   \
                snd_mtxunlock((x)->lock);                               \
} while (0)

Definition at line 139 of file mixer.c.

Function Documentation

◆ MALLOC_DEFINE()

static MALLOC_DEFINE	(	M_MIXER	,
		"mixer"	,
		"mixer"
	)

static

◆ mix_get()

int mix_get	(	struct snd_mixer *	m,
		u_int	dev
	)

Definition at line 1016 of file mixer.c.

References dev, m, mixer_get(), snd_mtxlock, and snd_mtxunlock.

Referenced by chn_syncstate(), and sysctl_es137x_single_pcm_mixer().

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◆ mix_get_dev()

device_t mix_get_dev ( struct snd_mixer * m )

Definition at line 1066 of file mixer.c.

References m.

Referenced by uaudio_mixer_init_sub(), uaudio_mixer_set(), uaudio_mixer_setrecsrc(), and uaudio_mixer_uninit_sub().

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◆ mix_get_locked()

int mix_get_locked	(	struct snd_mixer *	m,
		u_int	dev,
		int *	pleft,
		int *	pright
	)

Definition at line 1576 of file mixer.c.

References dev, m, and mixer_get().

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◆ mix_get_type()

int mix_get_type ( struct snd_mixer * m )

Definition at line 1058 of file mixer.c.

References m, and pcmchan_matrix::type.

◆ mix_getchild()

u_int32_t mix_getchild	(	struct snd_mixer *	m,
		u_int32_t	dev
	)

Definition at line 619 of file mixer.c.

References dev, and m.

◆ mix_getdevinfo()

void * mix_getdevinfo ( struct snd_mixer * m )

Definition at line 645 of file mixer.c.

References m.

Referenced by ac97mix_init(), ac97mix_reinit(), ac97mix_set(), ac97mix_setrecsrc(), ac97mix_uninit(), ad1816mix_set(), ad1816mix_setrecsrc(), alsmix_set(), alsmix_setrecsrc(), burgundy_init(), burgundy_set(), cmimix_init(), cmimix_set(), cmimix_setrecsrc(), emu_dspmixer_init(), emu_dspmixer_set(), emu_dspmixer_setrecsrc(), emu_dspmixer_uninit(), envy24htmixer_init(), envy24htmixer_reinit(), envy24htmixer_set(), envy24htmixer_setrecsrc(), envy24htmixer_uninit(), envy24mixer_init(), envy24mixer_reinit(), envy24mixer_set(), envy24mixer_setrecsrc(), envy24mixer_uninit(), es1370_mixinit(), es1370_mixset(), es1370_mixsetrecsrc(), essmix_init(), essmix_set(), essmix_setrecsrc(), hdaa_audio_ctl_ossmixer_init(), hdaa_audio_ctl_ossmixer_set(), hdaa_audio_ctl_ossmixer_setrecsrc(), hdspemixer_init(), hdspemixer_set(), mssmix_init(), mssmix_set(), mssmix_setrecsrc(), onyx_init(), onyx_set(), sb16mix_init(), sb16mix_set(), sb16mix_setrecsrc(), sbmix_init(), sbmix_set(), sbpromix_init(), sbpromix_set(), sbpromix_setrecsrc(), screamer_init(), screamer_set(), snapper_init(), snapper_set(), sv_mix_set(), sv_mix_setrecsrc(), tumbler_init(), tumbler_set(), ua_mixer_init(), ua_mixer_set(), ua_mixer_setrecsrc(), ua_mixer_uninit(), ymmix_init(), ymmix_set(), and ymmix_setrecsrc().

◆ mix_getdevs()

u_int32_t mix_getdevs ( struct snd_mixer * m )

Definition at line 627 of file mixer.c.

References m.

Referenced by dsp_ioctl(), emu_dspmixer_init(), mixer_ioctl_channel(), mixer_ioctl_cmd(), sysctl_es137x_single_pcm_mixer(), and ymmix_init().

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◆ mix_getmutedevs()

u_int32_t mix_getmutedevs ( struct snd_mixer * m )

Definition at line 633 of file mixer.c.

References m.

Referenced by mixer_ioctl_cmd().

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◆ mix_getparent()

u_int32_t mix_getparent	(	struct snd_mixer *	m,
		u_int32_t	dev
	)

Definition at line 611 of file mixer.c.

References dev, and m.

Referenced by chn_syncstate().

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◆ mix_getrecdevs()

u_int32_t mix_getrecdevs ( struct snd_mixer * m )

Definition at line 639 of file mixer.c.

References m.

Referenced by emu_dspmixer_init(), es1370_mixsetrecsrc(), hdaa_audio_ctl_ossmixer_setrecsrc(), mixer_ioctl_cmd(), and sysctl_es137x_single_pcm_mixer().

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◆ mix_getrecsrc()

u_int32_t mix_getrecsrc ( struct snd_mixer * m )

Definition at line 1044 of file mixer.c.

References m, mixer_getrecsrc(), snd_mtxlock, and snd_mtxunlock.

Referenced by sysctl_es137x_single_pcm_mixer().

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◆ mix_set()

int mix_set	(	struct snd_mixer *	m,
		u_int	dev,
		u_int	left,
		u_int	right
	)

Definition at line 1002 of file mixer.c.

References dev, left, m, mixer_set(), right, snd_mtxlock, and snd_mtxunlock.

Referenced by emu_dspmixer_set(), hdaa_audio_ctl_set_defaults(), and sysctl_es137x_single_pcm_mixer().

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◆ mix_set_locked()

int mix_set_locked	(	struct snd_mixer *	m,
		u_int	dev,
		int	left,
		int	right
	)

Definition at line 1593 of file mixer.c.

References dev, left, m, mixer_set(), and right.

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◆ mix_setdevs()

void mix_setdevs	(	struct snd_mixer *	m,
		u_int32_t	v
	)

Definition at line 489 of file mixer.c.

References snddev_info::flags, m, SD_F_EQ, and SD_F_SOFTPCMVOL.

Referenced by ac97mix_init(), ad1816mix_init(), alsmix_init(), burgundy_init(), cmimix_init(), emu_dspmixer_init(), emu_efxmixer_init(), envy24htmixer_init(), envy24mixer_init(), es1370_mixinit(), essmix_init(), hdaa_audio_ctl_ossmixer_init(), hdspemixer_init(), mssmix_init(), onyx_init(), sb16mix_init(), sbmix_init(), sbpromix_init(), screamer_init(), snapper_init(), sv_mix_init(), sysctl_es137x_single_pcm_mixer(), tumbler_init(), uaudio_mixer_init_sub(), and ymmix_init().

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◆ mix_setmutedevs()

void mix_setmutedevs	(	struct snd_mixer *	mixer,
		u_int32_t	mutedevs
	)

Definition at line 351 of file mixer.c.

References mixer, and mixer_set().

Referenced by mixer_hwvol_mute_locked(), and mixer_ioctl_cmd().

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◆ mix_setparentchild()

void mix_setparentchild	(	struct snd_mixer *	m,
		u_int32_t	parent,
		u_int32_t	childs
	)

Definition at line 579 of file mixer.c.

References m, and mask.

Referenced by ac97mix_init(), hdaa_audio_ctl_ossmixer_init(), and uaudio_mixer_init_sub().

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◆ mix_setrealdev()

void mix_setrealdev	(	struct snd_mixer *	m,
		u_int32_t	dev,
		u_int32_t	realdev
	)

Definition at line 602 of file mixer.c.

References dev, and m.

Referenced by ac97mix_init(), hdaa_audio_ctl_ossmixer_init(), and uaudio_mixer_init_sub().

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◆ mix_setrecdevs()

void mix_setrecdevs	(	struct snd_mixer *	m,
		u_int32_t	v
	)

Record mask of available recording devices.

Calling functions are responsible for defining the mask of available recording devices. This function records that value in a structure used by the rest of the mixer code.

This function also populates a structure used by the SNDCTL_DSP_*RECSRC* family of ioctls that are part of OSSV4. All recording device labels are concatenated in ascending order corresponding to their routing numbers. (Ex: a system might have 0 => 'vol', 1 => 'cd', 2 => 'line', etc.) For now, these labels are just the standard recording device names (cd, line1, etc.), but will eventually be fully dynamic and user controlled.

Parameters

m	mixer device context container thing
v	mask of recording devices

Definition at line 529 of file mixer.c.

References m, and snd_mixernames.

Referenced by ac97mix_init(), ad1816mix_init(), alsmix_init(), cmimix_init(), emu_dspmixer_init(), emu_efxmixer_init(), envy24htmixer_init(), envy24mixer_init(), es1370_mixinit(), essmix_init(), hdaa_audio_ctl_ossmixer_init(), mssmix_init(), sb16mix_init(), sbmix_init(), sbpromix_init(), sv_mix_init(), sysctl_es137x_single_pcm_mixer(), and uaudio_mixer_init_sub().

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◆ mix_setrecsrc()

int mix_setrecsrc	(	struct snd_mixer *	m,
		u_int32_t	src
	)

Definition at line 1030 of file mixer.c.

References m, mixer_setrecsrc(), snd_mtxlock, snd_mtxunlock, and src.

Referenced by emu_dspmixer_setrecsrc(), hdaa_autorecsrc_handler(), and sysctl_es137x_single_pcm_mixer().

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◆ mixer_busy()

int mixer_busy ( struct snd_mixer * m )

Definition at line 994 of file mixer.c.

References m.

Referenced by sysctl_es137x_single_pcm_mixer().

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◆ mixer_clone()

static void mixer_clone	(	void *	arg,
		struct ucred *	cred,
		char *	name,
		int	namelen,
		struct cdev **	dev
	)

static

Definition at line 1382 of file mixer.c.

References dev, snddev_info::mixer_dev, name, pcm_devclass, PCM_REGISTERED, and snd_unit.

Referenced by mixer_sysinit().

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◆ mixer_close()

static int mixer_close	(	struct cdev *	i_dev,
		int	flags,
		int	mode,
		struct thread *	td
	)

static

Definition at line 1099 of file mixer.c.

References m, PCM_REGISTERED, snd_mtxlock, and snd_mtxunlock.

◆ mixer_create()

struct snd_mixer * mixer_create	(	device_t	dev,
		kobj_class_t	cls,
		void *	devinfo,
		const char *	desc
	)

Definition at line 712 of file mixer.c.

References desc, dev, devinfo, m, mixer_count, mixer_obj_create(), and MIXER_TYPE_SECONDARY.

Referenced by emu_dspmixer_init().

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◆ mixer_delete()

int mixer_delete ( struct snd_mixer * m )

Definition at line 693 of file mixer.c.

References m, mixer_count, MIXER_TYPE_SECONDARY, snd_mtxfree(), and pcmchan_matrix::type.

Referenced by emu_dspmixer_uninit().

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◆ mixer_get()

static int mixer_get	(	struct snd_mixer *	mixer,
		int	dev
	)

static

Definition at line 338 of file mixer.c.

References dev, and mixer.

Referenced by mix_get(), mix_get_locked(), mixer_hwvol_step_locked(), and mixer_ioctl_cmd().

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◆ mixer_get_devt()

static struct cdev * mixer_get_devt ( device_t dev )

static

Definition at line 118 of file mixer.c.

References dev, and snddev_info::mixer_dev.

Referenced by mixer_hwvol_init(), mixer_hwvol_mute(), mixer_hwvol_step(), mixer_reinit(), and mixer_uninit().

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◆ mixer_get_lock()

struct mtx * mixer_get_lock ( struct snd_mixer * m )

Definition at line 1567 of file mixer.c.

References m.

Referenced by onyx_set(), snapper_set(), tumbler_set(), ua_mixer_set(), ua_mixer_setrecsrc(), and uaudio_mixer_init_sub().

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◆ mixer_get_recroute()

static int mixer_get_recroute	(	struct snd_mixer *	m,
		int *	route
	)

static

Retrieve the route number of the current recording device.

OSSv4 assigns routing numbers to recording devices, unlike the previous API which relied on a fixed table of device numbers and names. This function returns the routing number of the device currently selected for recording.

For now, this function is kind of a goofy compatibility stub atop the existing sound system. (For example, in theory, the old sound system allows multiple recording devices to be specified via a bitmask.)

Parameters

m	mixer context container thing

Return values

0	success
EIDRM	no recording device found (generally not possible)

Todo:: Ask about error code

Todo:: can user set a multi-device mask? (== or &?)

Definition at line 430 of file mixer.c.

References m.

Referenced by mixer_ioctl_cmd().

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◆ mixer_getrecsrc()

static int mixer_getrecsrc ( struct snd_mixer * mixer )

static

Definition at line 406 of file mixer.c.

References mixer.

Referenced by mix_getrecsrc(), and mixer_ioctl_cmd().

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◆ mixer_hwvol_init()

int mixer_hwvol_init ( device_t dev )

Definition at line 916 of file mixer.c.

References dev, m, mixer_get_devt(), and sysctl_hw_snd_hwvol_mixer().

Referenced by m3_pci_attach(), and uaudio_attach_sub().

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◆ mixer_hwvol_mute()

void mixer_hwvol_mute ( device_t dev )

Definition at line 943 of file mixer.c.

References dev, m, mixer_get_devt(), mixer_hwvol_mute_locked(), snd_mtxlock, and snd_mtxunlock.

Referenced by m3_intr().

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◆ mixer_hwvol_mute_locked()

void mixer_hwvol_mute_locked ( struct snd_mixer * m )

Definition at line 937 of file mixer.c.

References m, and mix_setmutedevs().

Referenced by mixer_hwvol_mute(), and uaudio_hid_rx_callback().

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◆ mixer_hwvol_step()

void mixer_hwvol_step	(	device_t	dev,
		int	left_step,
		int	right_step
	)

Definition at line 981 of file mixer.c.

References dev, m, mixer_get_devt(), mixer_hwvol_step_locked(), snd_mtxlock, and snd_mtxunlock.

Referenced by m3_intr().

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◆ mixer_hwvol_step_locked()

void mixer_hwvol_step_locked	(	struct snd_mixer *	m,
		int	left_step,
		int	right_step
	)

Definition at line 956 of file mixer.c.

References left, m, mixer_get(), mixer_set(), and right.

Referenced by mixer_hwvol_step(), and uaudio_hid_rx_callback().

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◆ mixer_init()

int mixer_init	(	device_t	dev,
		kobj_class_t	cls,
		void *	devinfo
	)

Definition at line 725 of file mixer.c.

References dev, devinfo, snddev_info::eqpreamp, snddev_info::flags, m, mixer_cdevsw, mixer_count, snddev_info::mixer_dev, mixer_obj_create(), mixer_set(), mixer_setrecsrc(), MIXER_TYPE_PRIMARY, PCMMINOR, SD_F_EQ, SD_F_EQ_DEFAULT, SD_F_EQ_MASK, SD_F_SOFTPCMVOL, SND_DEV_CTL, snd_mixerdefaults, snd_mixernames, snd_mkunit(), and val.

Referenced by ad1816_attach(), als_pci_attach(), atiixp_chip_post_init(), cmi_attach(), cs4281_pci_attach(), davbus_attach(), emu_pci_attach(), emu_pcm_attach(), envy24_pci_attach(), envy24ht_pci_attach(), es_pci_attach(), ess_attach(), fm801_pci_attach(), hdaa_pcm_attach(), hdspe_pcm_attach(), i2s_postattach(), ich_pci_attach(), m3_pci_attach(), mss_doattach(), nm_pci_attach(), pcmcsa_attach(), sb16_attach(), sb_attach(), sv_attach(), tr_pci_attach(), uaudio_attach_sub(), and via_attach().

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◆ mixer_ioctl()

static int mixer_ioctl	(	struct cdev *	i_dev,
		u_long	cmd,
		caddr_t	arg,
		int	mode,
		struct thread *	td
	)

static

Definition at line 1232 of file mixer.c.

References snddev_info::flags, mixer_bypass, MIXER_CMD_CDEV, mixer_ioctl_channel(), mixer_ioctl_cmd(), PCM_ACQUIRE_QUICK, PCM_DETACHING, PCM_GIANT_ENTER, PCM_GIANT_LEAVE, PCM_REGISTERED, PCM_RELEASE_QUICK, and SD_F_VPC.

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◆ mixer_ioctl_channel()

static int mixer_ioctl_channel	(	struct cdev *	dev,
		u_long	cmd,
		caddr_t	arg,
		int	mode,
		struct thread *	td,
		int	from
	)

static

Definition at line 1124 of file mixer.c.

References c, pcm_channel::channels, CHN_FOREACH, CHN_GETVOLUME, CHN_LOCK, CHN_LOCKASSERT, chn_setvolume_multi(), CHN_UNLOCK, dev, pcm_channel::direction, FEEDER_VOLUME, pcm_channel::feederflags, left, m, mix_getdevs(), PCMDIR_PLAY, PCMDIR_REC, pcm_channel::pid, right, SND_CHN_T_FL, SND_CHN_T_FR, snd_mtxlock, snd_mtxunlock, and SND_VOL_C_PCM.

Referenced by mixer_ioctl().

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◆ mixer_ioctl_cmd()

int mixer_ioctl_cmd	(	struct cdev *	i_dev,
		u_long	cmd,
		caddr_t	arg,
		int	mode,
		struct thread *	td,
		int	from
	)

Definition at line 1278 of file mixer.c.

References dsp_oss_audioinfo(), m, mix_getdevs(), mix_getmutedevs(), mix_getrecdevs(), mix_setmutedevs(), MIXER_CMD_CDEV, mixer_get(), mixer_get_recroute(), mixer_getrecsrc(), mixer_mixerinfo(), mixer_oss_mixerinfo(), mixer_set(), mixer_set_recroute(), mixer_setrecsrc(), snd_mtxlock, snd_mtxunlock, sound_oss_card_info(), and sound_oss_sysinfo().

Referenced by dsp_ioctl(), and mixer_ioctl().

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◆ mixer_lookup()

static int mixer_lookup ( char * devname )

static

Definition at line 128 of file mixer.c.

References snd_mixernames.

Referenced by sysctl_hw_snd_hwvol_mixer().

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◆ mixer_mixerinfo()

static void mixer_mixerinfo	(	struct snd_mixer *	m,
		mixer_info *	mi
	)

static

Definition at line 1265 of file mixer.c.

References m.

Referenced by mixer_ioctl_cmd().

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◆ mixer_obj_create()

static struct snd_mixer * mixer_obj_create	(	device_t	dev,
		kobj_class_t	cls,
		void *	devinfo,
		int	type,
		const char *	desc
	)

static

Definition at line 651 of file mixer.c.

References desc, dev, devinfo, m, MIXER_TYPE_PRIMARY, MIXER_TYPE_SECONDARY, snd_mtxcreate(), snd_mtxfree(), snd_mtxlock, pcmchan_matrix::type, and type.

Referenced by mixer_create(), and mixer_init().

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◆ mixer_open()

static int mixer_open	(	struct cdev *	i_dev,
		int	flags,
		int	mode,
		struct thread *	td
	)

static

Definition at line 1076 of file mixer.c.

References m, PCM_DETACHING, PCM_REGISTERED, snd_mtxlock, and snd_mtxunlock.

◆ mixer_oss_mixerinfo()

int mixer_oss_mixerinfo	(	struct cdev *	i_dev,
		oss_mixerinfo *	mi
	)

Handler for SNDCTL_MIXERINFO.

This function searches for a mixer based on the numeric ID stored in oss_miserinfo::dev. If set to -1, then information about the current mixer handling the request is provided. Note, however, that this ioctl may be made with any sound device (audio, mixer, midi).

Note: Caller must not hold any PCM device, channel, or mixer locks.

See http://manuals.opensound.com/developer/SNDCTL_MIXERINFO.html for more information.

Parameters

i_dev	character device on which the ioctl arrived
arg	user argument (oss_mixerinfo *)

Return values

EINVAL	oss_mixerinfo::dev specified a bad value
0	success

Todo:: Fill in

See also: oss_mixerinfo::mixerhandle.

Note: From 4Front: "mixerhandle is an arbitrary string that identifies the mixer better than the device number (mixerinfo.dev). Device numbers may change depending on the order the drivers are loaded. However the handle should remain the same provided that the sound card is not moved to another PCI slot."

See also: oss_mixerinfo::magic is a reserved field.

: From 4Front: "magic is usually 0. However some devices may have dedicated setup utilities and the magic field may contain an unique driver specific value (managed by [4Front])."

The only flag for

See also: oss_mixerinfo::caps is currently MIXER_CAP_VIRTUAL, which I'm not sure we really worry about.

Mixer extensions currently aren't supported, so leave

See also: oss_mixerinfo::nrext blank for now.

Todo:: Fill in

See also: oss_mixerinfo::priority (requires touching drivers?)

Note: The priority field is for mixer applets to determine which mixer should be the default, with 0 being least preferred and 10 being most preferred. From 4Front: "OSS drivers like ICH use higher values (10) because such chips are known to be used only on motherboards. Drivers for high end pro devices use 0 because they will never be the default mixer. Other devices use values 1 to 9 depending on the estimated probability of being the default device.

XXX Described by Hannu@4Front, but not found in soundcard.h. strlcpy(mi->devnode, devtoname(d->mixer_dev), sizeof(mi->devnode)); mi->legacy_device = i;

Definition at line 1439 of file mixer.c.

References m, mixer_cdevsw, snddev_info::mixer_dev, PCM_DETACHING, pcm_devclass, PCM_LOCK, PCM_REGISTERED, PCM_UNLOCK, and PCM_UNLOCKASSERT.

Referenced by dsp_ioctl(), and mixer_ioctl_cmd().

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◆ mixer_reinit()

int mixer_reinit ( device_t dev )

Definition at line 860 of file mixer.c.

References dev, m, mixer_get_devt(), mixer_set(), mixer_setrecsrc(), snd_mtxlock, and snd_mtxunlock.

Referenced by als_pci_resume(), atiixp_pci_resume(), cmi_resume(), cs4281_pci_resume(), ess_resume(), hdaa_resume(), ich_pci_resume(), m3_pci_resume(), nm_pci_resume(), sv_resume(), and tr_pci_resume().

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◆ mixer_set()

static int mixer_set	(	struct snd_mixer *	m,
		u_int	dev,
		u_int32_t	muted,
		u_int	lev
	)

static

Definition at line 247 of file mixer.c.

References child, dev, snddev_info::flags, m, mixer_set_eq(), MIXER_SET_LOCK, mixer_set_softpcmvol(), MIXER_SET_UNLOCK, r, SD_F_EQ, SD_F_MPSAFE, and SD_F_SOFTPCMVOL.

Referenced by mix_set(), mix_set_locked(), mix_setmutedevs(), mixer_hwvol_step_locked(), mixer_init(), mixer_ioctl_cmd(), mixer_reinit(), and mixer_uninit().

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◆ mixer_set_eq()

static int mixer_set_eq	(	struct snd_mixer *	m,
		struct snddev_info *	d,
		u_int	dev,
		u_int	level
	)

static

Definition at line 195 of file mixer.c.

References snddev_info::busy, c, chn_findfeeder(), CHN_FOREACH, CHN_LOCK, CHN_UNLOCK, dev, FEEDEQ_BASS, FEEDEQ_TREBLE, FEEDER_EQ, snddev_info::flags, snddev_info::lock, m, MIXER_SET_LOCK, MIXER_SET_UNLOCK, snddev_info::pcm, PCM_DETACHING, PCM_REGISTERED, and SD_F_MPSAFE.

Referenced by mixer_set().

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◆ mixer_set_recroute()

static int mixer_set_recroute	(	struct snd_mixer *	m,
		int	route
	)

static

Select a device for recording.

This function sets a recording source based on a recording device's routing number. Said number is translated to an old school recdev mask and passed over mixer_setrecsrc.

Parameters

m	mixer context container thing

Return values

0	success(?)
EINVAL	User specified an invalid device number
otherwise	error from mixer_setrecsrc

Definition at line 465 of file mixer.c.

References m, and mixer_setrecsrc().

Referenced by mixer_ioctl_cmd().

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◆ mixer_set_softpcmvol()

static int mixer_set_softpcmvol	(	struct snd_mixer *	m,
		struct snddev_info *	d,
		u_int	left,
		u_int	right
	)

static

Definition at line 150 of file mixer.c.

References c, pcm_channel::channels, CHN_FOREACH, CHN_LOCK, chn_setvolume_multi(), CHN_UNLOCK, pcm_channel::direction, FEEDER_VOLUME, pcm_channel::feederflags, snddev_info::flags, left, snddev_info::lock, m, MIXER_SET_LOCK, MIXER_SET_UNLOCK, PCM_DETACHING, PCM_REGISTERED, PCMDIR_PLAY, right, SD_F_MPSAFE, and SND_VOL_C_MASTER.

Referenced by mixer_set().

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◆ mixer_setrecsrc()

static int mixer_setrecsrc	(	struct snd_mixer *	mixer,
		u_int32_t	src
	)

static

Definition at line 373 of file mixer.c.

References snddev_info::flags, mixer, MIXER_SET_LOCK, MIXER_SET_UNLOCK, SD_F_MPSAFE, and src.

Referenced by mix_setrecsrc(), mixer_init(), mixer_ioctl_cmd(), mixer_reinit(), mixer_set_recroute(), and mixer_uninit().

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◆ mixer_sysinit()

static void mixer_sysinit ( void * p )

static

Definition at line 1400 of file mixer.c.

References mixer_clone(), and mixer_ehtag.

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◆ mixer_sysuninit()

static void mixer_sysuninit ( void * p )

static

Definition at line 1408 of file mixer.c.

References mixer_ehtag.

◆ mixer_uninit()

int mixer_uninit ( device_t dev )

Definition at line 805 of file mixer.c.

References dev, m, mixer_count, snddev_info::mixer_dev, mixer_get_devt(), mixer_set(), mixer_setrecsrc(), MIXER_TYPE_PRIMARY, snd_mtxfree(), snd_mtxlock, snd_mtxunlock, and pcmchan_matrix::type.

Referenced by pcm_unregister(), and uaudio_detach_sub().

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◆ SND_DECLARE_FILE()

SND_DECLARE_FILE ( "$FreeBSD$" )

◆ sysctl_hw_snd_hwvol_mixer()

static int sysctl_hw_snd_hwvol_mixer ( SYSCTL_HANDLER_ARGS )

static

Definition at line 890 of file mixer.c.

References dev, error, m, mixer_lookup(), req, snd_mixernames, snd_mtxlock, and snd_mtxunlock.

Referenced by mixer_hwvol_init().

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◆ SYSCTL_INT()

SYSCTL_INT	(	_hw_snd	,
		OID_AUTO	,
		vpc_mixer_bypass	,
		CTLFLAG_RWTUN	,
		&	mixer_bypass,
		0	,
		"control channel pcm/rec	volume,
		bypassing real mixer device"
	)

◆ SYSINIT()

SYSINIT	(	mixer_sysinit	,
		SI_SUB_DRIVERS	,
		SI_ORDER_MIDDLE	,
		mixer_sysinit	,
		NULL
	)

◆ SYSUNINIT()

SYSUNINIT	(	mixer_sysuninit	,
		SI_SUB_DRIVERS	,
		SI_ORDER_MIDDLE	,
		mixer_sysuninit	,
		NULL
	)

Variable Documentation

◆ mixer_bypass

int mixer_bypass = 1

static

Definition at line 44 of file mixer.c.

Referenced by mixer_ioctl().

◆ mixer_cdevsw

struct cdevsw mixer_cdevsw

static

Initial value:

= {
        .d_version =    D_VERSION,
        .d_open =       mixer_open,
        .d_close =      mixer_close,
        .d_ioctl =      mixer_ioctl,
        .d_name =       "mixer",
}

Definition at line 102 of file mixer.c.

Referenced by mixer_init(), and mixer_oss_mixerinfo().

◆ mixer_close

d_close_t mixer_close

static

Definition at line 99 of file mixer.c.

◆ mixer_count

int mixer_count = 0

Keeps a count of mixer devices; used only by OSSv4 SNDCTL_SYSINFO ioctl.

Definition at line 113 of file mixer.c.

Referenced by mixer_create(), mixer_delete(), mixer_init(), mixer_uninit(), and sound_oss_sysinfo().

◆ mixer_ehtag

eventhandler_tag mixer_ehtag = NULL

static

Definition at line 115 of file mixer.c.

Referenced by mixer_sysinit(), and mixer_sysuninit().

◆ mixer_ioctl

d_ioctl_t mixer_ioctl

static

Definition at line 100 of file mixer.c.

◆ mixer_open

d_open_t mixer_open

static

Definition at line 98 of file mixer.c.

◆ snd_mixerdefaults

u_int16_t snd_mixerdefaults[SOUND_MIXER_NRDEVICES]

static

Initial value:

= {
        [SOUND_MIXER_VOLUME]    = 75,
        [SOUND_MIXER_BASS]      = 50,
        [SOUND_MIXER_TREBLE]    = 50,
        [SOUND_MIXER_SYNTH]     = 75,
        [SOUND_MIXER_PCM]       = 75,
        [SOUND_MIXER_SPEAKER]   = 75,
        [SOUND_MIXER_LINE]      = 75,
        [SOUND_MIXER_MIC]       = 25,
        [SOUND_MIXER_CD]        = 75,
        [SOUND_MIXER_IGAIN]     = 0,
        [SOUND_MIXER_LINE1]     = 75,
        [SOUND_MIXER_VIDEO]     = 75,
        [SOUND_MIXER_RECLEV]    = 75,
        [SOUND_MIXER_OGAIN]     = 50,
        [SOUND_MIXER_MONITOR]   = 75,
}

Definition at line 78 of file mixer.c.

Referenced by mixer_init().

◆ snd_mixernames

char* snd_mixernames[SOUND_MIXER_NRDEVICES] = SOUND_DEVICE_NAMES

static

Definition at line 96 of file mixer.c.

Referenced by mix_setrecdevs(), mixer_init(), mixer_lookup(), and sysctl_hw_snd_hwvol_mixer().

Data Structures

Macros

Functions

Variables

Macro Definition Documentation

◆ MIXER_NAMELEN

◆ MIXER_SET_LOCK

◆ MIXER_SET_UNLOCK

Function Documentation

◆ MALLOC_DEFINE()

◆ mix_get()

◆ mix_get_dev()

◆ mix_get_locked()

◆ mix_get_type()

◆ mix_getchild()

◆ mix_getdevinfo()

◆ mix_getdevs()

◆ mix_getmutedevs()

◆ mix_getparent()

◆ mix_getrecdevs()

◆ mix_getrecsrc()

◆ mix_set()

◆ mix_set_locked()

◆ mix_setdevs()

◆ mix_setmutedevs()

◆ mix_setparentchild()

◆ mix_setrealdev()

◆ mix_setrecdevs()

◆ mix_setrecsrc()

◆ mixer_busy()

◆ mixer_clone()

◆ mixer_close()

◆ mixer_create()

◆ mixer_delete()

◆ mixer_get()

◆ mixer_get_devt()

◆ mixer_get_lock()

◆ mixer_get_recroute()

◆ mixer_getrecsrc()

◆ mixer_hwvol_init()

◆ mixer_hwvol_mute()

◆ mixer_hwvol_mute_locked()

◆ mixer_hwvol_step()

◆ mixer_hwvol_step_locked()

◆ mixer_init()

◆ mixer_ioctl()

◆ mixer_ioctl_channel()

◆ mixer_ioctl_cmd()

◆ mixer_lookup()

◆ mixer_mixerinfo()

◆ mixer_obj_create()

◆ mixer_open()

◆ mixer_oss_mixerinfo()

◆ mixer_reinit()

◆ mixer_set()

◆ mixer_set_eq()

◆ mixer_set_recroute()

◆ mixer_set_softpcmvol()

◆ mixer_setrecsrc()

◆ mixer_sysinit()

◆ mixer_sysuninit()

◆ mixer_uninit()

◆ SND_DECLARE_FILE()

◆ sysctl_hw_snd_hwvol_mixer()

◆ SYSCTL_INT()

◆ SYSINIT()

◆ SYSUNINIT()

Variable Documentation

◆ mixer_bypass

◆ mixer_cdevsw

◆ mixer_close

◆ mixer_count

◆ mixer_ehtag

◆ mixer_ioctl

◆ mixer_open

◆ snd_mixerdefaults

◆ snd_mixernames