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/*********************************************************
Capcom Q-Sound system
*********************************************************/
#pragma once
#ifndef __QSOUND_H__
#define __QSOUND_H__
#define QSOUND_CLOCK 4000000 /* default 4MHz clock */
#define QSOUND_CLOCKDIV 166 /* Clock divider */
#define QSOUND_CHANNELS 16
typedef INT8 QSOUND_SRC_SAMPLE; /* 8 bit source ROM samples */
typedef stream_sample_t QSOUND_SAMPLE;
//**************************************************************************
// 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)
//**************************************************************************
// TYPE DEFINITIONS
//**************************************************************************
struct QSOUND_CHANNEL
{
INT32 bank; // bank (x16)
INT32 address; // start address
INT32 pitch; // pitch
INT32 reg3; // unknown (always 0x8000)
INT32 loop; // loop address
INT32 end; // end address
INT32 vol; // master volume
INT32 pan; // Pan value
INT32 reg9; // unknown
/* Work variables */
INT32 key; // Key on / key off
INT32 lvol; // left volume
INT32 rvol; // right volume
INT32 lastdt; // last sample value
INT32 offset; // current offset counter
};
// ======================> 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() { }
protected:
// device-level overrides
virtual void device_start();
virtual void device_stop();
// sound stream update overrides
virtual void sound_stream_update(sound_stream &stream, stream_sample_t **inputs, stream_sample_t **outputs, int samples);
public:
DECLARE_WRITE8_MEMBER( qsound_w );
DECLARE_READ8_MEMBER( qsound_r );
private:
void qsound_set_command(int data, int value);
private:
int m_data; // register latch data
sound_stream *m_stream; // Audio stream
QSOUND_CHANNEL m_channel[QSOUND_CHANNELS];
UINT32 m_sample_rom_length;
QSOUND_SRC_SAMPLE *m_sample_rom; // Q sound sample ROM
int m_pan_table[33]; // Pan volume table
float m_frq_ratio; // Frequency ratio
FILE *m_fpRawDataL;
FILE *m_fpRawDataR;
};
extern const device_type QSOUND;
#endif /* __QSOUND_H__ */
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