// license:BSD-3-Clause // copyright-holders:Wilbert Pol /***************************************************************************** * * includes/wswan.h * ****************************************************************************/ #ifndef MAME_AUDIO_WSWAN_H #define MAME_AUDIO_WSWAN_H #pragma once //************************************************************************** // TYPE DEFINITIONS //************************************************************************** // ======================> wswan_sound_device class wswan_sound_device : public device_t, public device_sound_interface, public device_rom_interface { public: wswan_sound_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock); void port_w(offs_t offset, uint8_t data); protected: struct CHAN { CHAN() : freq(0), period(0), pos(0), vol_left(0), vol_right(0), on(0), offset(0), signal(0) { } uint16_t freq; /* frequency */ uint16_t period; /* period */ uint32_t pos; /* position */ uint8_t vol_left; /* volume left */ uint8_t vol_right; /* volume right */ uint8_t on; /* on/off */ uint8_t offset; /* sample offset */ uint8_t signal; /* signal */ }; // device-level overrides virtual void device_start() override; virtual void device_clock_changed() override; virtual void device_reset() override; virtual void rom_bank_updated() 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: void wswan_ch_set_freq( CHAN *ch, uint16_t freq ); int fetch_sample(int channel, int offset); sound_stream *m_channel; CHAN m_audio1; /* Audio channel 1 */ CHAN m_audio2; /* Audio channel 2 */ CHAN m_audio3; /* Audio channel 3 */ CHAN m_audio4; /* Audio channel 4 */ int8_t m_sweep_step; /* Sweep step */ uint32_t m_sweep_time; /* Sweep time */ uint32_t m_sweep_count; /* Sweep counter */ uint8_t m_noise_type; /* Noise generator type */ uint8_t m_noise_reset; /* Noise reset */ uint8_t m_noise_enable; /* Noise enable */ uint8_t m_noise_output; /* Noise output */ uint16_t m_sample_address; /* Sample address */ uint8_t m_audio2_voice; /* Audio 2 voice */ uint8_t m_audio3_sweep; /* Audio 3 sweep */ uint8_t m_audio4_noise; /* Audio 4 noise */ uint8_t m_mono; /* mono */ uint8_t m_output_volume; /* output volume */ uint8_t m_external_stereo; /* external stereo */ uint8_t m_external_speaker; /* external speaker */ uint16_t m_noise_shift; /* Noise counter shift register */ uint8_t m_master_volume; /* Master volume */ }; DECLARE_DEVICE_TYPE(WSWAN_SND, wswan_sound_device) #endif // MAME_AUDIO_WSWAN_H