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// license:BSD-3-Clause
// copyright-holders:R. Belmont, superctr
#ifndef MAME_SOUND_C352_H
#define MAME_SOUND_C352_H
#pragma once
#include "dirom.h"
//**************************************************************************
// TYPE DEFINITIONS
//**************************************************************************
// ======================> asc_device
class c352_device : public device_t,
public device_sound_interface,
public device_rom_interface<24>
{
public:
// construction/destruction
c352_device(const machine_config &mconfig, const char *tag, device_t *owner, u32 clock, int divider)
: c352_device(mconfig, tag, owner, clock)
{
set_divider(divider);
}
c352_device(const machine_config &mconfig, const char *tag, device_t *owner, u32 clock);
void set_divider(int divider) { m_divider = divider; }
u16 read(offs_t offset);
void write(offs_t offset, u16 data, u16 mem_mask = 0);
protected:
// device-level overrides
virtual void device_start() override ATTR_COLD;
virtual void device_reset() override ATTR_COLD;
virtual void device_clock_changed() override;
// device_sound_interface overrides
virtual void sound_stream_update(sound_stream &stream, std::vector<read_stream_view> const &inputs, std::vector<write_stream_view> &outputs) override;
// device_rom_interface overrides
virtual void rom_bank_pre_change() override;
private:
enum
{
C352_FLG_BUSY = 0x8000, // channel is busy
C352_FLG_KEYON = 0x4000, // Keyon
C352_FLG_KEYOFF = 0x2000, // Keyoff
C352_FLG_LOOPTRG = 0x1000, // Loop Trigger
C352_FLG_LOOPHIST = 0x0800, // Loop History
C352_FLG_FM = 0x0400, // Frequency Modulation
C352_FLG_PHASERL = 0x0200, // Rear Left invert phase 180 degrees
C352_FLG_PHASEFL = 0x0100, // Front Left invert phase 180 degrees
C352_FLG_PHASEFR = 0x0080, // invert phase 180 degrees (e.g. flip sign of sample)
C352_FLG_LDIR = 0x0040, // loop direction
C352_FLG_LINK = 0x0020, // "long-format" sample (can't loop, not sure what else it means)
C352_FLG_NOISE = 0x0010, // play noise instead of sample
C352_FLG_MULAW = 0x0008, // sample is mulaw instead of linear 8-bit PCM
C352_FLG_FILTER = 0x0004, // don't apply filter
C352_FLG_REVLOOP = 0x0003, // loop backwards
C352_FLG_LOOP = 0x0002, // loop forward
C352_FLG_REVERSE = 0x0001 // play sample backwards
};
struct c352_voice_t
{
u32 pos;
u32 counter;
s16 sample;
s16 last_sample;
u16 vol_f;
u16 vol_r;
u8 curr_vol[4];
u16 freq;
u16 flags;
u16 wave_bank;
u16 wave_start;
u16 wave_end;
u16 wave_loop;
};
void fetch_sample(c352_voice_t &v);
void ramp_volume(c352_voice_t &v, int ch, u8 val);
sound_stream *m_stream;
int m_sample_rate_base;
int m_divider;
c352_voice_t m_c352_v[32];
s16 m_mulawtab[256];
u16 m_random;
u16 m_control; // control flags, purpose unknown.
};
// device type definition
DECLARE_DEVICE_TYPE(C352, c352_device)
#endif // MAME_SOUND_C352_H
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