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man pages section 9: DDI and DKI Driver Entry Points     Oracle Solaris 11.1 Information Library
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Document Information

Preface

Introduction

Driver Entry Points

aread(9E)

attach(9E)

audio_engine_channels(9E)

audio_engine_chinfo(9E)

audio_engine_close(9E)

audio_engine_count(9E)

audio_engine_format(9E)

audio_engine_open(9E)

audio_engine_playahead(9E)

audio_engine_qlen(9E)

audio_engine_rate(9E)

audio_engine_start(9E)

audio_engine_stop(9E)

audio_engine_sync(9E)

awrite(9E)

chpoll(9E)

close(9E)

csx_event_handler(9E)

detach(9E)

devmap(9E)

devmap_access(9E)

devmap_contextmgt(9E)

devmap_dup(9E)

devmap_map(9E)

devmap_unmap(9E)

dump(9E)

_fini(9E)

getinfo(9E)

gld(9E)

gldm_get_stats(9E)

gldm_intr(9E)

gldm_ioctl(9E)

gldm_reset(9E)

gldm_send(9E)

gldm_set_mac_addr(9E)

gldm_set_multicast(9E)

gldm_set_promiscuous(9E)

gldm_start(9E)

gldm_stop(9E)

identify(9E)

_info(9E)

_init(9E)

ioctl(9E)

ks_snapshot(9E)

ks_update(9E)

mac(9E)

mac_capab_rings(9E)

mac_group_info(9E)

mac_ring_info(9E)

mc_getcapab(9E)

mc_getprop(9E)

mc_getstat(9E)

mc_ioctl(9E)

mc_multicst(9E)

mc_propinfo(9E)

mc_setpromisc(9E)

mc_setprop(9E)

mc_start(9E)

mc_stop(9E)

mc_tx(9E)

mc_unicst(9E)

mgi_addmac(9E)

mgi_add_vlanfilter(9E)

mgi_getsriov_info(9E)

mgi_remmac(9E)

mgi_rem_vlanfliter(9E)

mgi_setmtu(9E)

mgi_start(9E)

mgi_stop(9E)

mmap(9E)

mr_gaddring(9E)

mr_gget(9E)

mr_gremring(9E)

mri_intr_disable(9E)

mri_intr_enable(9E)

mri_poll(9E)

mri_start(9E)

mri_stat(9E)

mri_stop(9E)

mri_tx(9E)

mr_rget(9E)

open(9E)

power(9E)

print(9E)

probe(9E)

prop_op(9E)

put(9E)

quiesce(9E)

read(9E)

segmap(9E)

sofop_accepted(9E)

sofop_attach_active(9E)

sofop_attach_passive(9E)

sofop_bind(9E)

sofop_connect(9E)

sofop_data_in(9E)

sofop_data_in_proc(9E)

sofop_data_out(9E)

sofop_detach(9E)

sofop_getpeername(9E)

sofop_getsockname(9E)

sofop_getsockopt(9E)

sofop_listen(9E)

sofop_notify(9E)

sofop_setsockopt(9E)

sofop_shutdown(9E)

srv(9E)

strategy(9E)

tran_abort(9E)

tran_bus_reset(9E)

tran_destroy_pkt(9E)

tran_dmafree(9E)

tran_getcap(9E)

tran_init_pkt(9E)

tran_pkt_constructor(9E)

tran_pkt_destructor(9E)

tran_quiesce(9E)

tran_reset(9E)

tran_reset_notify(9E)

tran_setcap(9E)

tran_setup_pkt(9E)

tran_start(9E)

tran_sync_pkt(9E)

tran_teardown_pkt(9E)

tran_tgt_free(9E)

tran_tgt_init(9E)

tran_tgt_probe(9E)

tran_unquiesce(9E)

write(9E)

audio_engine_qlen

- return the depth of an audio engine's queue

Synopsis

#include <sys/audio/audio_driver.h>

uint_t prefix_qlen(void *state);

Parameters

state

pointer to driver supplied soft state

Interface Level

Solaris DDI specific (Solaris DDI)

Description

The audio_engine_qlen() function returns the depth, in frames, of any on-device FIFO. It is used to improve the latency-related calculations in the framework. For most devices the value 0 is appropriate, since they DMA directly from the buffer into the codec.

Return Values

The audio_engine_qlen() function returns the depth of any hardware FIFO as a count in frames.

Context

This function may be called from user or interrupt context.

Attributes

See attributes(5) for descriptions of the following attributes:

ATTRIBUTE TYPE
ATTRIBUTE VALUE
Interface Stability
Committed

See Also

attributes(5), audio(7D), audio_engine_ops(9S)