int
mixer_check(struct mixer_s *mixer, unsigned group_count, unsigned control_count)
{
int ret;
/* sanity that presumes that a mixer includes a control no more than once */
if (mixer->control_count > (group_count * control_count))
return -2;
/* validate the output scaler */
ret = scale_check(&mixer->output_scaler);
if (ret != 0)
return ret;
/* validate input scalers */
for (unsigned i = 0; i < mixer->control_count; i++) {
/* range-check input controls */
if (mixer->control_scaler[i].control_group >= group_count)
return -3;
if (mixer->control_scaler[i].control_index >= control_count)
return -3;
/* validate the scaler */
ret = scale_check(&mixer->control_scaler[i]);
if (ret != 0)
return (10 * i + ret);
}
return 0;
}
int
SimpleMixer::check()
{
int ret;
float junk;
/* sanity that presumes that a mixer includes a control no more than once */
/* max of 32 groups due to groups_required API */
if (_pinfo->control_count > 32) {
return -2;
}
/* validate the output scaler */
ret = scale_check(_pinfo->output_scaler);
if (ret != 0) {
return ret;
}
/* validate input scalers */
for (unsigned i = 0; i < _pinfo->control_count; i++) {
/* verify that we can fetch the control */
if (_control_cb(_cb_handle,
_pinfo->controls[i].control_group,
_pinfo->controls[i].control_index,
junk) != 0) {
return -3;
}
/* validate the scaler */
ret = scale_check(_pinfo->controls[i].scaler);
if (ret != 0) {
return (10 * i + ret);
}
}
return 0;
}
