#pragma once
#ifndef __SPU_H__
#define __SPU_H__
#include "spureverb.h"
//**************************************************************************
// INTERFACE CONFIGURATION MACROS
//**************************************************************************
#define MCFG_SPU_IRQ_HANDLER(_devcb) \
devcb = &spu_device::set_irq_handler(*device, DEVCB2_##_devcb);
#define MCFG_SPU_ADD(_tag, _clock) \
MCFG_DEVICE_MODIFY( "maincpu" ) \
MCFG_PSX_SPU_READ_HANDLER(DEVREAD16(_tag, spu_device, read)) \
MCFG_PSX_SPU_WRITE_HANDLER(DEVWRITE16(_tag, spu_device, write)) \
MCFG_DEVICE_ADD(_tag, SPU, _clock) \
MCFG_SPU_IRQ_HANDLER(DEVWRITELINE("maincpu:irq", psxirq_device, intin9)) \
MCFG_PSX_DMA_CHANNEL_READ( "maincpu", 4, psx_dma_read_delegate( FUNC( spu_device::dma_read ), (spu_device *) device ) ) \
MCFG_PSX_DMA_CHANNEL_WRITE( "maincpu", 4, psx_dma_write_delegate( FUNC( spu_device::dma_write ), (spu_device *) device ) )
// ======================> spu_device
const unsigned int spu_base_frequency_hz=44100;
class stream_buffer;
class spu_device : public device_t, public device_sound_interface
{
struct sample_cache;
struct sample_loop_cache;
struct cache_pointer;
struct voiceinfo;
enum
{
dirtyflag_voice_mask=0x00ffffff,
dirtyflag_reverb=0x01000000,
dirtyflag_ram=0x02000000,
dirtyflag_irq=0x04000000,
};
protected:
// device-level overrides
virtual void device_start();
virtual void device_reset();
virtual void device_post_load();
virtual void device_stop();
virtual void sound_stream_update(sound_stream &stream, stream_sample_t **inputs, stream_sample_t **outputs, int samples);
// internal state
devcb2_write_line m_irq_handler;
unsigned char *spu_ram;
reverb *rev;
unsigned int taddr, sample_t;
stream_buffer *xa_buffer, *cdda_buffer;
unsigned int xa_cnt,cdda_cnt,
xa_freq,cdda_freq,
xa_channels,
xa_spf,
xa_out_ptr,
cur_frame_sample,
cur_generate_sample,
dirty_flags;
signed short xa_last[4];
bool status_enabled,
xa_playing,
cdda_playing;
int xa_voll,xa_volr,
changed_xa_vol;
voiceinfo *voice;
sample_cache **cache;
float samples_per_frame,
samples_per_cycle;
static float freq_multiplier;
unsigned char *output_buf[4];
unsigned int output_head,
output_tail,
output_size,
cur_qsz;
unsigned int noise_t;
signed short noise_cur;
int noise_seed;
#pragma pack(push,spureg,1)
struct voicereg
{
unsigned short vol_l, // 0
vol_r, // 2
pitch, // 4
addr, // 6
adsl, // 8
srrr, // a
curvol, // c
repaddr; // e
};
union
{
unsigned char reg[0x200];
struct
{
voicereg voice[24];
unsigned short mvol_l,mvol_r,
rvol_l,rvol_r;
unsigned int keyon,
keyoff,
fm,
noise,
reverb,
chon;
unsigned short _unknown,
reverb_addr,
irq_addr,
trans_addr,
data,
ctrl;
unsigned int status;
signed short cdvol_l,cdvol_r,
exvol_l,exvol_r;
} spureg;
};
#pragma pack(pop,spureg)
struct reverb_preset
{
const char *name;
unsigned short param[32];
reverb_params cfg;
};
reverb_preset *cur_reverb_preset;
static reverb_preset reverb_presets[];
void key_on(const int v);
void key_off(const int v);
bool update_envelope(const int v);
void write_data(const unsigned short data);
void generate(void *ptr, const unsigned int sz);
void generate_voice(const unsigned int v,
void *ptr,
void *noiseptr,
void *outxptr,
const unsigned int sz);
void generate_noise(void *ptr, const unsigned int num);
bool process_voice(const unsigned int v,
const unsigned int sz,
void *ptr,
void *fmnoise_ptr,
void *outxptr,
unsigned int *tleft);
void process();
void process_until(const unsigned int tsample);
void update_voice_loop(const unsigned int v);
bool update_voice_state(const unsigned int v);
void update_voice_state();
void update_voice_events(voiceinfo *vi);
void update_irq_event();
unsigned int get_irq_distance(const voiceinfo *vi);
void generate_xa(void *ptr, const unsigned int sz);
void generate_cdda(void *ptr, const unsigned int sz);
void decode_xa_mono(const unsigned char *xa, unsigned char *ptr);
void decode_xa_stereo(const unsigned char *xa, unsigned char *ptr);
void update_key();
void update_reverb();
void update_timing();
bool translate_sample_addr(const unsigned int addr, cache_pointer *cp);
sample_cache *get_sample_cache(const unsigned int addr);
void flush_cache(sample_cache *sc,
const unsigned int istart,
const unsigned int iend);
void invalidate_cache(const unsigned int st, const unsigned int en);
void set_xa_format(const float freq, const int channels);
void init_stream();
void kill_stream();
void update_vol(const unsigned int addr);
void flush_output_buffer();
sample_loop_cache *get_loop_cache(sample_cache *cache,
const unsigned int lpen,
sample_cache *lpcache,
const unsigned int lpst);
#if 0
void write_cache_pointer(outfile *fout,
cache_pointer *cp,
sample_loop_cache *lc=NULL);
void read_cache_pointer(infile *fin,
cache_pointer *cp,
sample_loop_cache **lc=NULL);
#endif
static float get_linear_rate(const int n);
static float get_linear_rate_neg_phase(const int n);
static float get_pos_exp_rate(const int n);
static float get_pos_exp_rate_neg_phase(const int n);
static float get_neg_exp_rate(const int n);
static float get_neg_exp_rate_neg_phase(const int n);
static float get_decay_rate(const int n);
static float get_sustain_level(const int n);
static float get_linear_release_rate(const int n);
static float get_exp_release_rate(const int n);
static reverb_preset *find_reverb_preset(const unsigned short *param);
public:
spu_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);
// static configuration helpers
template<class _Object> static devcb2_base &set_irq_handler(device_t &device, _Object object) { return downcast<spu_device &>(device).m_irq_handler.set_callback(object); }
void dma_read( UINT32 *ram, UINT32 n_address, INT32 n_size );
void dma_write( UINT32 *ram, UINT32 n_address, INT32 n_size );
void reinit_sound();
void kill_sound();
void update();
void start_dma(UINT8 *mainram, bool to_spu, UINT32 size);
bool play_xa(const unsigned int sector, const unsigned char *sec);
bool play_cdda(const unsigned int sector, const unsigned char *sec);
void flush_xa(const unsigned int sector=0);
void flush_cdda(const unsigned int sector=0);
sound_stream *m_stream;
DECLARE_READ16_MEMBER( read );
DECLARE_WRITE16_MEMBER( write );
};
extern reverb_params *spu_reverb_cfg;
// device type definition
extern const device_type SPU;
#endif