a8ba8ad76b
The ioctl definitions and accompanying structures were taken from FreeBSD's soundcard.h, hopefully providing some binary compatibility. The ioctls are as follows: SNDCTL_SYSINFO: Returns a structure containing details about the audio device. SNDCTL_ENGINEINFO - SNDCTL_AUDIOINFO: Returns a structure with playback/recording characteristics. SNDCTL_DSP_GETPLAYVOL, SNDCTL_DSP_SETPLAYVOL, SNDCTL_DSP_GETRECVOL, SNDCTL_DSP_SETRECVOL: Retrieves/Sets Playback/Recording volume. SNDCTL_DSP_SKIP - SNDCTL_DSP_SILENCE: These ioctls were intended to manipulate the underlying audio buffer skip or insert silence. These return EINVAL. SOUND_VERSION is unchanged, but is definable, It will be changed when the mixer OSSv4 ioctls are written. Addresses PR 46611 This commit was approved by wiz@.