ac97/sis7018/Mixer.cpp

362 Mixer::_InitGainLimits(multi_mix_control& Control, GainInfo& Info)
364 	float base = Info.fBase >> Info.fOff;
365 	float max = Info.fMask >> Info.fOff;
367 	float min_gain = Info.fMult * (0.0 - base);
368 	float max_gain = Info.fMult * (max - base);
370 	Control.gain.min_gain = (Info.fMult > 0) ? min_gain : max_gain;
371 	Control.gain.max_gain = (Info.fMult > 0) ? max_gain : min_gain;
372 	Control.gain.granularity = Info.fMult;
375 	uint8 gran = (uint8)(Info.fMult * 10.);
377 	Control.id |= (Info.fBase << baseShift);
380 			Info.fBase, Info.fMask, Info.fMult);
403 Mixer::_CorrectMIXControlInfo(MIXControlInfo& Info, GainInfo& gainInfo)
409 	switch (Info.fAC97Reg) {
412 				Info.fNameId = S_HEADPHONE;
413 				Info.fName = NULL;
450 	if (_CheckRegFeatures(Info.fAC97Reg, testMask, testResult)) {
463 									int32 parentIndex, MIXControlInfo& Info)
467 	GainInfo gainInfo = *Info.fInfo;
468 	if (!_CorrectMIXControlInfo(Info, gainInfo))
471 	int32 IdReg = Info.fAC97Reg << regShift;
475 		= Controls[index].id	= IdReg | Info.fType;
478 	Controls[index].string		= Info.fNameId;
479 	if (Info.fName != NULL)
480 		strlcpy(Controls[index].name, Info.fName,
484 	if (Info.fType & MIX_Mute) {
486 		Controls[index].id		|= Info.fInfo->fEnaOff << baseShift;
495 	if (Info.fType & MIX_Enable) {
496 		int32 IdExReg = Info.fExAC97Reg << regShift;
498 		Controls[index].id		|= (Info.fExOff << baseShift);
501 		Controls[index].string	= Info.fExNameId;
502 		if (Info.fExName != NULL)
503 			strlcpy(Controls[index].name, Info.fExName,
511 	if (Info.fType & MIX_LGain) {
521 	if (Info.fType & MIX_RGain) {
531 	if (Info.fType & MIX_Boost) {
533 		Controls[index].id		|= (Info.fExOff << baseShift);
536 		Controls[index].string	= Info.fExNameId;
537 		if (Info.fExName != NULL)
538 			strlcpy(Controls[index].name, Info.fExName,
545 	if (Info.fType & MIX_MUX) {
546 		int32 IdMUXReg = Info.fExAC97Reg << regShift;
552 		if (Info.fExName != NULL)
553 			strlcpy(Controls[index].name, Info.fExName,
577 Mixer::ListMixControls(multi_mix_control_info* Info)
580 	multi_mix_control* Controls = Info->controls;
589 		_CreateMIXControlGroup(Info, index, mixerGroup, OutputControls[i]);
600 		_CreateMIXControlGroup(Info, index, inputGroup, InputControls[i]);
612 		_CreateMIXControlGroup(Info, index, recordGroup, RecordControls[i]);
615 	Info->control_count = index;
622 Mixer::GetMix(multi_mix_value_info *Info)
624 	for (int32 i = 0; i < Info->item_count; i++) {
626 		int32 Id= Info->values[i].id;
638 			Info->values[i].enable = (RegValue & mask) == mask;
640 							Reg, Info->values[i].enable, RegValue);
645 			Info->values[i].mux = (RegValue | (RegValue >> 8)) & 0x7;
647 							Reg, Info->values[i].mux, RegValue);
656 			Info->values[i].gain = mult * gain - base;
658 							Reg, Info->values[i].gain, mult, base, gain);
664 			Info->values[i].gain = mult * gain - base;
666 							Reg, Info->values[i].gain, mult, base, gain);
675 Mixer::SetMix(multi_mix_value_info *Info)
677 	for (int32 i = 0; i < Info->item_count; i++) {
679 		int32 Id = Info->values[i].id;
691 			if (Info->values[i].enable)
696 							Reg, Info->values[i].enable, RegValue);
700 			uint8 mux = Info->values[i].mux & 0x7;
703 							Reg, Info->values[i].mux, RegValue);
709 		float gain = (Info->values[i].gain + base) / mult;
718 							Reg, Info->values[i].gain, mult, base, gainValue);
725 							Reg, Info->values[i].gain, mult, base, gainValue);