613 _ssize(oss_audio_t *self, int *nchannels, int *ssize)  in _ssize()  argument
639     if (ioctl(self->fd, SNDCTL_DSP_CHANNELS, nchannels) < 0)  in _ssize()
651     int nchannels=0, ssize=0;  in oss_bufsize()  local
656     if (_ssize(self, &nchannels, &ssize) < 0 || !nchannels || !ssize) {  in oss_bufsize()
664     return PyLong_FromLong((ai.fragstotal * ai.fragsize) / (nchannels * ssize));  in oss_bufsize()
673     int nchannels=0, ssize=0;  in oss_obufcount()  local
678     if (_ssize(self, &nchannels, &ssize) < 0 || !nchannels || !ssize) {  in oss_obufcount()
687                           (ssize * nchannels));  in oss_obufcount()
696     int nchannels=0, ssize=0;  in oss_obuffree()  local
701     if (_ssize(self, &nchannels, &ssize) < 0 || !nchannels || !ssize) {  in oss_obuffree()
709     return PyLong_FromLong(ai.bytes / (ssize * nchannels));  in oss_obuffree()