1 // license:GPL-2.0+ 2 // copyright-holders:Juergen Buchmueller 3 #ifndef MAME_AUDIO_GEEBEE_H 4 #define MAME_AUDIO_GEEBEE_H 5 6 #pragma once 7 8 class geebee_sound_device : public device_t, public device_sound_interface 9 { 10 public: 11 geebee_sound_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock); 12 13 enum 14 { 15 TIMER_VOLUME_DECAY 16 }; 17 18 void sound_w(u8 data); 19 20 protected: 21 // device-level overrides 22 virtual void device_start() override; 23 24 // sound stream update overrides 25 virtual void sound_stream_update(sound_stream &stream, std::vector<read_stream_view> const &inputs, std::vector<write_stream_view> &outputs) override; 26 27 virtual void device_timer(emu_timer &timer, device_timer_id id, int param, void *ptr) override; 28 29 private: 30 // internal state 31 std::unique_ptr<uint16_t[]> m_decay; 32 sound_stream *m_channel; 33 int m_sound_latch; 34 int m_sound_signal; 35 int m_volume; 36 emu_timer *m_volume_timer; 37 int m_noise; 38 int m_vcount; 39 }; 40 41 DECLARE_DEVICE_TYPE(GEEBEE_SOUND, geebee_sound_device) 42 43 #endif // MAME_AUDIO_GEEBEE_H 44