vchan.h File Reference

This graph shows which files directly or indirectly include this file:

Go to the source code of this file.

Macros
#define	VCHAN_SYNC_REQUIRED(c)
#define	VCHAN_DEFAULT_FORMAT   SND_FORMAT(AFMT_S16_LE, 2, 0)
#define	VCHAN_DEFAULT_RATE   48000
#define	VCHAN_PLAY   0
#define	VCHAN_REC   1
#define	VCHAN_SYSCTL_DATA(x, y)
#define	VCHAN_SYSCTL_DATA_SIZE   sizeof(void *)
#define	VCHAN_SYSCTL_UNIT(x)   ((int)(((intptr_t)(x) >> 2) & 0xfff) - 1)
#define	VCHAN_SYSCTL_DIR(x)   ((int)((intptr_t)(x) & 0x3) - 1)

Functions
int	vchan_create (struct pcm_channel *, int)
int	vchan_destroy (struct pcm_channel *)
int	vchan_sync (struct pcm_channel *)
void	vchan_initsys (device_t)

Macro Definition Documentation

VCHAN_DEFAULT_FORMAT

#define VCHAN_DEFAULT_FORMAT   SND_FORMAT(AFMT_S16_LE, 2, 0)

Definition at line 55 of file vchan.h.

VCHAN_DEFAULT_RATE

#define VCHAN_DEFAULT_RATE   48000

Definition at line 56 of file vchan.h.

VCHAN_PLAY

#define VCHAN_PLAY   0

Definition at line 58 of file vchan.h.

VCHAN_REC

#define VCHAN_REC   1

Definition at line 59 of file vchan.h.

VCHAN_SYNC_REQUIRED

#define VCHAN_SYNC_REQUIRED

(

c

)

Value:

        (((c)->flags & CHN_F_VIRTUAL) && (((c)->flags & CHN_F_DIRTY) || \
        sndbuf_getfmt((c)->bufhard) != (c)->parentchannel->format ||    \
        sndbuf_getspd((c)->bufhard) != (c)->parentchannel->speed))

Definition at line 45 of file vchan.h.

VCHAN_SYSCTL_DATA

#define VCHAN_SYSCTL_DATA	(		x,
			y
	)

Value:

                ((void *)((intptr_t)(((((x) + 1) & 0xfff) << 2) |       \
                (((VCHAN_##y) + 1) & 0x3))))

Definition at line 64 of file vchan.h.

VCHAN_SYSCTL_DATA_SIZE

#define VCHAN_SYSCTL_DATA_SIZE   sizeof(void *)

Definition at line 68 of file vchan.h.

VCHAN_SYSCTL_DIR

#define VCHAN_SYSCTL_DIR

(

x

)

((int)((intptr_t)(x) & 0x3) - 1)

Definition at line 70 of file vchan.h.

VCHAN_SYSCTL_UNIT

#define VCHAN_SYSCTL_UNIT

(

x

)

((int)(((intptr_t)(x) >> 2) & 0xfff) - 1)

Definition at line 69 of file vchan.h.

Function Documentation

vchan_create()

int vchan_create	(	struct pcm_channel *	parent,
		int	num
	)

Definition at line 667 of file vchan.c.

References AFMT_PASSTHROUGH, AFMT_VCHAN, CHN_F_BUSY, CHN_F_HAS_VCHAN, CHN_F_VCHAN_PASSTHROUGH, chn_getcaps(), CHN_INSERT_SORT_DESCEND, CHN_LOCK, CHN_LOCKASSERT, CHN_REMOVE, chn_reset(), CHN_UNLOCK, pcm_channel::dev, pcm_channel::devinfo, pcm_channel::direction, feeder_rate_max, feeder_rate_min, feeder_rate_round, pcm_channel::flags, pcmchan_caps::fmtlist, pcm_channel::format, pcmchan_caps::maxspeed, pcm_channel::methods, pcmchan_caps::minspeed, pcm_channel::parentsnddev, PCM_BUSYASSERT, pcm_chn_add(), pcm_chn_create(), pcm_chn_destroy(), pcm_chn_remove(), PCM_LOCK, PCM_UNLOCK, PCMDIR_PLAY, PCMDIR_PLAY_VIRTUAL, PCMDIR_REC, PCMDIR_REC_VIRTUAL, snddev_info::pvchanformat, snddev_info::pvchanrate, r, RANGE, snddev_info::rvchanformat, snddev_info::rvchanrate, snd_fmtvalid(), snd_str2afmt(), pcm_channel::speed, VCHAN_DEFAULT_FORMAT, VCHAN_DEFAULT_RATE, VCHAN_FMT_HINT, and VCHAN_SPD_HINT.

Referenced by pcm_setvchans().

Here is the call graph for this function:

Here is the caller graph for this function:

vchan_destroy()

int vchan_destroy

(

struct pcm_channel *

c

)

Definition at line 852 of file vchan.c.

References c, CHN_EMPTY, CHN_F_BUSY, CHN_F_HAS_VCHAN, CHN_LOCK, CHN_LOCKASSERT, CHN_REMOVE, chn_reset(), CHN_UNLOCK, pcm_channel::flags, pcm_channel::format, pcm_channel::parentchannel, pcm_channel::parentsnddev, PCM_BUSYASSERT, pcm_chn_destroy(), pcm_chn_remove(), PCM_LOCK, PCM_UNLOCK, and pcm_channel::speed.

Referenced by pcm_setvchans().

Here is the call graph for this function:

Here is the caller graph for this function:

vchan_initsys()

void vchan_initsys

(

device_t

dev

)

Definition at line 940 of file vchan.c.

References dev, snddev_info::play_sysctl_tree, snddev_info::rec_sysctl_ctx, snddev_info::rec_sysctl_tree, sysctl_dev_pcm_vchanformat(), sysctl_dev_pcm_vchanmode(), sysctl_dev_pcm_vchanrate(), sysctl_dev_pcm_vchans(), VCHAN_SYSCTL_DATA, and VCHAN_SYSCTL_DATA_SIZE.

Referenced by pcm_sysinit().

Here is the call graph for this function:

Here is the caller graph for this function:

vchan_sync()

int vchan_sync

(

struct pcm_channel *

c

)

Definition at line 906 of file vchan.c.

References buf, pcm_channel::bufhard, c, CHN_F_DIRTY, CHN_F_PASSTHROUGH, CHN_F_VIRTUAL, CHN_LOCKASSERT, CHN_NAMELEN, pcm_channel::comm, pcm_channel::dev, dsp_unit2name(), feeder_chain(), pcm_channel::flags, pcm_channel::parentchannel, sndbuf_setspd(), pcm_channel::speed, and pcm_channel::unit.

Referenced by chn_notify(), feed_mixer_feed(), feed_mixer_rec(), sysctl_dev_pcm_vchanformat(), sysctl_dev_pcm_vchanrate(), and vchan_trigger().

Here is the call graph for this function:

Here is the caller graph for this function: