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// license:???
// copyright-holders:Paul Leaman, Miguel Angel Horna
/*********************************************************
Capcom Q-Sound system
*********************************************************/
#pragma once
#ifndef __QSOUND_H__
#define __QSOUND_H__
#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:
qsound_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);
~qsound_device() { }
DECLARE_WRITE8_MEMBER(qsound_w);
DECLARE_READ8_MEMBER(qsound_r);
protected:
// device-level overrides
const rom_entry *device_rom_region() const;
machine_config_constructor device_mconfig_additions() const;
virtual void device_start();
// sound stream update overrides
virtual void sound_stream_update(sound_stream &stream, stream_sample_t **inputs, stream_sample_t **outputs, int samples);
private:
struct qsound_channel
{
UINT32 bank; // bank
UINT32 address; // start/cur address
UINT16 loop; // loop address
UINT16 end; // end address
UINT32 freq; // frequency
UINT16 vol; // master volume
// work variables
bool enabled; // key on / key off
int lvol; // left volume
int rvol; // right volume
UINT32 step_ptr; // current offset counter
} m_channel[16];
required_device<dsp16_device> m_cpu;
required_region_ptr<INT8> m_sample_rom;
int m_pan_table[33]; // pan volume table
UINT16 m_data; // register latch data
sound_stream *m_stream; // audio stream
inline INT8 read_sample(UINT32 offset) { return m_sample_rom[offset & m_sample_rom.mask()]; }
void write_data(UINT8 address, UINT16 data);
};
extern const device_type QSOUND;
#endif /* __QSOUND_H__ */
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