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// license:BSD-3-Clause
// copyright-holders:Ryan Holtz, superctr
/**********************************************************************
Super A'Can sound driver
**********************************************************************/
#ifndef MAME_AUDIO_ACAN_H
#define MAME_AUDIO_ACAN_H
#pragma once
class acan_sound_device : public device_t, public device_sound_interface
{
public:
acan_sound_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock);
auto ram_read() { return m_ram_read.bind(); }
auto timer_irq_handler() { return m_timer_irq_handler.bind(); }
auto dma_irq_handler() { return m_dma_irq_handler.bind(); }
uint8_t read(offs_t offset);
void write(offs_t offset, uint8_t data);
protected:
// device-level overrides
virtual void device_start() override;
virtual void device_reset() override;
virtual void device_timer(emu_timer &timer, device_timer_id id, int param, void *ptr) override;
// sound stream update overrides
virtual void sound_stream_update(sound_stream &stream, std::vector<read_stream_view> const &inputs, std::vector<write_stream_view> &outputs) override;
private:
struct acan_channel
{
uint16_t pitch;
uint16_t length;
uint16_t start_addr;
uint16_t curr_addr;
uint16_t end_addr;
uint32_t addr_increment;
uint32_t frac;
uint8_t register9;
uint8_t envelope[4];
uint8_t volume;
uint8_t volume_l;
uint8_t volume_r;
bool one_shot;
};
void keyon_voice(uint8_t voice);
sound_stream *m_stream;
emu_timer *m_timer;
devcb_write_line m_timer_irq_handler;
devcb_write_line m_dma_irq_handler;
devcb_read8 m_ram_read;
uint16_t m_active_channels;
uint16_t m_dma_channels;
acan_channel m_channels[16];
uint8_t m_regs[256];
std::unique_ptr<int32_t[]> m_mix;
};
DECLARE_DEVICE_TYPE(ACANSND, acan_sound_device)
#endif // MAME_AUDIO_ACAN_H
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