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// license:BSD-3-Clause
// copyright-holders:pSXAuthor, R. Belmont
#ifndef MAME_SOUND_SPU_H
#define MAME_SOUND_SPU_H
#pragma once
// ======================> spu_device
class spu_stream_buffer;
class psxcpu_device;
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
};
sound_stream_flags m_stream_flags;
protected:
class reverb;
// device-level overrides
virtual void device_start() override;
virtual void device_reset() override;
virtual void device_post_load() override;
virtual void device_stop() override;
virtual void sound_stream_update(sound_stream &stream, std::vector<read_stream_view> const &inputs, std::vector<write_stream_view> &outputs) override;
float spu_base_frequency_hz;
float linear_rate[108];
float pos_exp_rate[100];
float neg_exp_rate[108];
float decay_rate[16];
float linear_release_rate[27];
float exp_release_rate[27];
// internal state
devcb_write_line m_irq_handler;
std::unique_ptr<unsigned char []> spu_ram;
reverb *rev;
unsigned int taddr;
unsigned int sample_t;
spu_stream_buffer *xa_buffer;
spu_stream_buffer *cdda_buffer;
unsigned int xa_cnt;
unsigned int cdda_cnt;
unsigned int xa_freq;
unsigned int cdda_freq;
unsigned int xa_channels;
unsigned int xa_spf;
unsigned int xa_out_ptr;
unsigned int cur_frame_sample;
unsigned int cur_generate_sample;
unsigned int dirty_flags;
uint16_t m_cd_out_ptr;
signed short xa_last[4];
bool status_enabled, xa_playing, cdda_playing;
int xa_voll, xa_volr, changed_xa_vol;
voiceinfo *voice;
std::unique_ptr<sample_cache * []> cache;
float samples_per_frame;
float samples_per_cycle;
static float freq_multiplier;
std::unique_ptr<unsigned char []> output_buf[4];
unsigned int output_head;
unsigned int output_tail;
unsigned int output_size;
unsigned int 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
unsigned short vol_r; // 2
unsigned short pitch; // 4
unsigned short addr; // 6
unsigned short adsl; // 8
unsigned short srrr; // a
unsigned short curvol; // c
unsigned short repaddr; // e
};
union
{
unsigned char reg[0x200];
struct
{
voicereg voice[24];
unsigned short mvol_l;
unsigned short mvol_r;
unsigned short rvol_l;
unsigned short rvol_r;
unsigned int keyon;
unsigned int keyoff;
unsigned int fm;
unsigned int noise;
unsigned int reverb;
unsigned int chon;
unsigned short _unknown;
unsigned short reverb_addr;
unsigned short irq_addr;
unsigned short trans_addr;
unsigned short data;
unsigned short ctrl;
unsigned int status;
signed short cdvol_l;
signed short cdvol_r;
signed short exvol_l;
signed short exvol_r;
} spureg;
};
#pragma pack(pop,spureg)
struct reverb_params;
struct reverb_preset;
reverb_preset *cur_reverb_preset;
sound_stream *m_stream;
static reverb_preset reverb_presets[];
static reverb_params *spu_reverb_cfg;
float ms_to_rate(float ms) const { return 1.0f / (ms * (spu_base_frequency_hz / 1000.0f)); }
float s_to_rate(float s) const { return ms_to_rate(s * 1000.0f); }
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_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=nullptr);
void read_cache_pointer(infile *fin, cache_pointer *cp, sample_loop_cache **lc=nullptr);
#endif
void generate_linear_rate_table();
void generate_pos_exp_rate_table();
void generate_neg_exp_rate_table();
void generate_decay_rate_table();
void generate_linear_release_rate_table();
void generate_exp_release_rate_table();
float get_linear_rate(const int n);
float get_linear_rate_neg_phase(const int n);
float get_pos_exp_rate(const int n);
float get_pos_exp_rate_neg_phase(const int n);
float get_neg_exp_rate(const int n);
float get_neg_exp_rate_neg_phase(const int n);
float get_decay_rate(const int n);
float get_sustain_level(const int n);
float get_linear_release_rate(const int n);
float get_exp_release_rate(const int n);
reverb_preset *find_reverb_preset(const unsigned short *param);
public:
spu_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock, psxcpu_device *cpu);
spu_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock);
// configuration helpers
auto irq_handler() { return m_irq_handler.bind(); }
void set_stream_flags(sound_stream_flags flags) { m_stream_flags = flags; }
void dma_read( uint32_t *ram, uint32_t n_address, int32_t n_size );
void dma_write( uint32_t *ram, uint32_t n_address, int32_t n_size );
void reinit_sound();
void kill_sound();
void start_dma(uint8_t *mainram, bool to_spu, uint32_t 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);
uint16_t read(offs_t offset);
void write(offs_t offset, uint16_t data);
};
// device type definition
DECLARE_DEVICE_TYPE(SPU, spu_device)
#endif // MAME_SOUND_SPU_H
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