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// 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);
void write(offs_t offset, uint8_t data);
void set_enable(bool enable);
protected:
// device-level overrides
virtual void device_start() override;
// sound stream update overrides
virtual void sound_stream_update_legacy(sound_stream &stream, stream_sample_t const * const *inputs, stream_sample_t * const *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
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