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// license:BSD-3-Clause
// copyright-holders:Allard van der Bas
#ifndef MAME_AUDIO_WIPING_H
#define MAME_AUDIO_WIPING_H
#pragma once
class wiping_sound_device : public device_t, public device_sound_interface
{
public:
wiping_sound_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock);
void sound_w(offs_t offset, uint8_t data);
protected:
// device-level overrides
virtual void device_start() 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:
// 8 voices max
static constexpr unsigned MAX_VOICES = 8;
// this structure defines the parameters for a channel
struct wp_sound_channel
{
int frequency;
int counter;
int volume;
const uint8_t *wave;
int oneshot;
int oneshotplaying;
};
// internal state
// data about the sound system
wp_sound_channel m_channel_list[MAX_VOICES];
wp_sound_channel *m_last_channel;
// global sound parameters
required_region_ptr<uint8_t> m_sound_prom;
required_region_ptr<uint8_t> m_sound_rom;
int m_num_voices;
int m_sound_enable;
sound_stream *m_stream;
// mixer tables and internal buffers
std::vector<short> m_mixer_buffer;
uint8_t m_soundregs[0x4000];
void make_mixer_table(int voices, int gain);
};
DECLARE_DEVICE_TYPE(WIPING_CUSTOM, wiping_sound_device)
#endif // MAME_AUDIO_WIPING_H
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