Hi all I have an issue about ossmix command. I download the ossmix.c <http://manuals.opensound.com/developer/ossmix.c.html#LOC8> file and complied it bash-3.2#./ossmix -d 0 ,the output is: "Mixer device 0 doesn't exist." bash-3.2#./ossmix -d -1 ,the output is: "Selected mixer -1/audio#0" "Known controls are:"
I checked the code and the error caused by SNDCTL_MIX_NREXT <http://manuals.opensound.com/developer/SNDCTL_MIX_NREXT.html> ioctl, the errno is ENXIO <http://manuals.opensound.com/developer/oss_errno.html> . It seems that there is no mixer devices, but i do have the mixer device ,and below is my audio device information: bash-3.2# ls -l /dev/sound/ total 24 lrwxrwxrwx 1 root root 9 Jul 5 14:41 0 -> audiohd:0 lrwxrwxrwx 1 root root 12 Jul 5 14:41 0ctl -> audiohd:0ctl lrwxrwxrwx 1 root root 8 Jul 7 12:59 1 -> usb_ac:0 lrwxrwxrwx 1 root root 11 Jul 7 12:59 1ctl -> usb_ac:0ctl lrwxrwxrwx 1 root root 49 Jul 5 14:41 audiohd:0 -> ../../devices/pseudo/au...@0:sound,audiohd,audio0 lrwxrwxrwx 1 root root 52 Jul 5 14:41 audiohd:0ctl -> ../../devices/pseudo/au...@0:sound,audiohd,audioctl0 lrwxrwxrwx 1 root root 48 Jul 5 14:41 audiohd:0dsp -> ../../devices/p...@0,0/pci17aa,1...@1b:sound,dsp0 lrwxrwxrwx 1 root root 50 Jul 5 14:41 audiohd:0mixer -> ../../devices/p...@0,0/pci17aa,1...@1b:sound,mixer0 lrwxrwxrwx 1 root root 48 Jul 7 12:59 usb_ac:0 -> ../../devices/pseudo/au...@0:sound,usb_ac,audio0 lrwxrwxrwx 1 root root 51 Jul 7 12:59 usb_ac:0ctl -> ../../devices/pseudo/au...@0:sound,usb_ac,audioctl0 lrwxrwxrwx 1 root root 75 Jul 5 14:41 usb_ac:0dsp -> ../../devices/p...@0,0/pci17aa,1...@1d,3/dev...@2/sound-cont...@0:sound,dsp0 lrwxrwxrwx 1 root root 77 Jul 5 14:41 usb_ac:0mixer -> ../../devices/p...@0,0/pci17aa,1...@1d,3/dev...@2/sound-cont...@0:sound,mixer0 I checked the code about SNDCTL_MIX_NREXT <http://manuals.opensound.com/developer/SNDCTL_MIX_NREXT.html> , here is the code about this ioctl: static int sndctl_mix_nrext(audio_client_t *c, int *ncp) { audio_dev_t*d; ossdev_t*odev; d = auclnt_get_dev(c); if ((*ncp != -1) && (*ncp != (auclnt_get_dev_index(d) - 1))) { // Why (*ncp != -1)????? ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ return (ENXIO); } if ((odev = auclnt_get_dev_minor_data(d, AUDIO_MINOR_DSP)) == NULL) { return (EINVAL); } *ncp = odev->d_nctrl; return (0); } Can anybody tell me Why (*ncp != -1) in the line that i signed. And Why SNDCTL_MIX_NREXT <http://manuals.opensound.com/developer/SNDCTL_MIX_NREXT.html> failed that can't find the mixer device 0. My OS is Solaris snv_117. Thanks. Boliang.Guan
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