// 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); DECLARE_WRITE8_MEMBER( sound_w ); protected: // device-level overrides virtual void device_start() override; // sound stream update overrides virtual void sound_stream_update(sound_stream &stream, stream_sample_t **inputs, stream_sample_t **outputs, int samples) 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 */ const uint8_t *m_sound_prom; const uint8_t *m_sound_rom; int m_num_voices; int m_sound_enable; sound_stream *m_stream; /* mixer tables and internal buffers */ std::unique_ptr m_mixer_table; int16_t *m_mixer_lookup; std::unique_ptr m_mixer_buffer; std::unique_ptr m_mixer_buffer_2; 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