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// license:BSD-3-Clause
// copyright-holders:Paul Leaman, Miguel Angel Horna
/*********************************************************
Capcom Q-Sound system
*********************************************************/
#ifndef MAME_SOUND_QSOUND_H
#define MAME_SOUND_QSOUND_H
#pragma once
#include "cpu/dsp16/dsp16.h"
#define QSOUND_CLOCK 4000000 /* default 4MHz clock (60MHz/15?) */
//**************************************************************************
// INTERFACE CONFIGURATION MACROS
//**************************************************************************
#define MCFG_QSOUND_ADD(_tag, _clock) \
MCFG_DEVICE_ADD(_tag, QSOUND, _clock)
#define MCFG_QSOUND_REPLACE(_tag, _clock) \
MCFG_DEVICE_REPLACE(_tag, QSOUND, _clock)
// ======================> qsound_device
class qsound_device : public device_t,
public device_sound_interface,
public device_rom_interface
{
public:
qsound_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock);
DECLARE_WRITE8_MEMBER(qsound_w);
DECLARE_READ8_MEMBER(qsound_r);
protected:
// device-level overrides
const tiny_rom_entry *device_rom_region() const override;
virtual void device_add_mconfig(machine_config &config) override;
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;
// device_rom_interface overrides
virtual void rom_bank_updated() override;
private:
struct qsound_channel
{
uint32_t bank; // bank
uint32_t address; // start/cur address
uint16_t loop; // loop address
uint16_t end; // end address
uint32_t freq; // frequency
uint16_t vol; // master volume
// work variables
bool enabled; // key on / key off
int lvol; // left volume
int rvol; // right volume
uint32_t step_ptr; // current offset counter
} m_channel[16];
required_device<dsp16_device> m_cpu;
int m_pan_table[33]; // pan volume table
uint16_t m_data; // register latch data
sound_stream *m_stream; // audio stream
inline int8_t read_sample(uint32_t offset) { return (int8_t)read_byte(offset); }
void write_data(uint8_t address, uint16_t data);
};
DECLARE_DEVICE_TYPE(QSOUND, qsound_device)
#endif // MAME_SOUND_QSOUND_H
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