summaryrefslogblamecommitdiffstatshomepage
path: root/src/devices/sound/t6w28.h
blob: e62852e77b618674b14136afd3a9336b1da9bd74 (plain) (tree)
1
2
3
4
5
6
7
8
9
10

                                

                          
 
            
 
                                                                   

       
                                                                                                      
 
                                       
                                       
 

                                 
                                             

                                        
                                                                                                                                          


                                
        

                                
                                                          










                                                                    
                       

  
                                        
 
                            
// license:BSD-3-Clause
// copyright-holders:Wilbert Pol
#ifndef MAME_SOUND_T6W28_H
#define MAME_SOUND_T6W28_H

#pragma once

class t6w28_device : public device_t, public device_sound_interface
{
public:
	t6w28_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock);

	DECLARE_WRITE8_MEMBER( write );
	void set_enable( bool enable );

protected:
	// device-level overrides
	virtual void device_start() override;

	// sound stream update overrides
	virtual void sound_stream_update(sound_stream &stream, stream_sample_t **inputs, stream_sample_t **outputs, int samples) override;

	void set_gain(int gain);

private:
	sound_stream *m_channel;
	int m_sample_rate;
	int m_vol_table[16];    /* volume table         */
	int32_t m_register[16];   /* registers */
	int32_t m_last_register[2];   /* last register written */
	int32_t m_volume[8];  /* volume of voice 0-2 and noise */
	uint32_t m_rng[2];        /* noise generator      */
	int32_t m_noise_mode[2];  /* active noise mode */
	int32_t m_feedback_mask;     /* mask for feedback */
	int32_t m_whitenoise_taps;   /* mask for white noise taps */
	int32_t m_whitenoise_invert; /* white noise invert flag */
	int32_t m_period[8];
	int32_t m_count[8];
	int32_t m_output[8];
	bool m_enabled;
};

DECLARE_DEVICE_TYPE(T6W28, t6w28_device)

#endif // MAME_SOUND_T6W28_H