void
update_ctrl (s_ctrl ctrl)
{
oss_mixext ext;
oss_mixer_value val;
int left, right;
left = ctrl.left_val;
right = ctrl.right_val;
ext.dev = 0;
ext.ctrl = ctrl.real_id;
OSS_CALL(SNDCTL_MIX_EXTINFO, &ext)
/* if we can't change the values, we just do nothing */
if (!(ext.flags & MIXF_WRITEABLE))
return;
val.dev = ext.dev;
val.ctrl = ext.ctrl;
val.timestamp = ext.timestamp;
switch (ext.type) {
case MIXT_STEREOSLIDER16:
case MIXT_MONOSLIDER16:
if (left > 0xffff) left = 0xffff;
if (right > 0xffff) right = 0xffff;
val.value = (left & 0xffff) | ((right & 0xffff) << 16);
break;
case MIXT_MONOSLIDER:
case MIXT_SLIDER:
val.value = left;
break;
default:
if (left > 255) left = 255;
if (right > 255) right = 255;
val.value = (left & 255) | ((right & 255) << 8);
break;
}
OSS_CALL(SNDCTL_MIX_WRITE, &val);
}
void
get_values (s_ctrl *ctrl)
{
oss_mixer_value val;
int mask = 0xff, shift = 8;
val.dev = ctrl->dev;
val.ctrl = ctrl->real_id;
val.timestamp = ctrl->timestamp;
OSS_CALL(SNDCTL_MIX_READ, &val);
/* FIXME: you *can't* mute a ctrl which is not a MIXT_MUTE */
ctrl->muted = false;
switch (ctrl->type) {
case MIXT_STEREOSLIDER16:
shift = 16; mask = 0xffff;
case MIXT_STEREOSLIDER:
ctrl->stereo = TRUE;
ctrl->left_val = val.value & mask;
ctrl->right_val = (val.value >> shift) & mask;
break;
case MIXT_SLIDER:
mask = ~0;
case MIXT_MONOSLIDER16:
mask = 0xffff;
case MIXT_MONOSLIDER:
case MIXT_MONODB:
ctrl->stereo = FALSE;
ctrl->left_val = val.value & mask;
default:
ctrl->stereo = FALSE;
ctrl->max_value = 1;
ctrl->left_val = 0;
}
}
OSS_CALL(SNDCTL_SYSINFO,oss_sysinfo,,AS_STRUCT)
STRUCT_STR(product)
STRUCT_STR(version)
STRUCT_STR(license)
STRUCT_INT(versionnum)
STRUCT_INT(numaudios)
STRUCT_INT(numaudioengines)
STRUCT_INT(nummidis)
STRUCT_INT(numtimers)
STRUCT_INT(numcards)
STRUCT_INT(nummixers)
FINISH
}
DEF(SNDCTL_MIXERINFO) {
OSS_CALL(SNDCTL_MIXERINFO,oss_mixerinfo,STRUCT_SET(dev,GET_INT(2)),AS_STRUCT)
STRUCT_INT(dev)
STRUCT_STR(id)
STRUCT_STR(name)
STRUCT_INT(modify_counter)
STRUCT_INT(enabled)
STRUCT_INT(nrext)
STRUCT_INT(priority)
STRUCT_STR(devnode)
FINISH
}
DEF(SNDCTL_MIX_EXTINFO) {
OSS_CALL(SNDCTL_MIX_EXTINFO,oss_mixext,STRUCT_SET(dev,GET_INT(2)) STRUCT_SET(ctrl,GET_INT(3)),AS_STRUCT)
STRUCT_INT(dev)
STRUCT_INT(ctrl)