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// license:???
// copyright-holders:???
#ifndef __LYNXSOUND_H__
#define __LYNXSOUND_H__
struct LYNX_AUDIO {
struct {
INT8 volume;
UINT8 feedback;
INT8 output;
UINT8 shifter;
UINT8 bakup;
UINT8 control1;
UINT8 counter;
UINT8 control2;
} reg;
UINT8 attenuation;
UINT16 mask; // 12-bit
UINT16 shifter; // 12-bit
float ticks;
int count;
};
typedef device_delegate<void (void)> lynx_sound_timer_delegate;
class lynx_sound_device : public device_t,
public device_sound_interface
{
public:
lynx_sound_device(const machine_config &mconfig, device_type type, const char *name, const char *tag, device_t *owner, UINT32 clock, const char *shortname, const char *source);
lynx_sound_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);
DECLARE_READ8_MEMBER(read);
DECLARE_WRITE8_MEMBER(write);
void count_down(int nr);
static void set_timer_delegate(device_t &device, lynx_sound_timer_delegate cb);
protected:
// device-level overrides
virtual void device_config_complete();
virtual void device_start();
virtual void device_reset();
// sound stream update overrides
virtual void sound_stream_update(sound_stream &stream, stream_sample_t **inputs, stream_sample_t **outputs, int samples);
void reset_channel(LYNX_AUDIO *channel);
void shift(int chan_nr);
void execute(int chan_nr);
void init();
void register_save();
sound_stream *m_mixer_channel;
lynx_sound_timer_delegate m_timer_delegate; // this calls lynx_timer_count_down from the driver state
float m_usec_per_sample;
int *m_shift_mask;
int *m_shift_xor;
UINT8 m_attenuation_enable;
UINT8 m_master_enable;
LYNX_AUDIO m_audio[4];
};
class lynx2_sound_device : public lynx_sound_device
{
public:
lynx2_sound_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);
protected:
// device-level overrides
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);
};
extern const device_type LYNX_SND;
extern const device_type LYNX2_SND;
#define MCFG_LYNX_SND_SET_TIMER( _class, _method) \
lynx_sound_device::set_timer_delegate(*device, lynx_sound_timer_delegate(&_class::_method, #_class "::" #_method, NULL, (_class *)0));
#endif
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