#pragma once #ifndef __SNKWAVE_H__ #define __SNKWAVE_H__ #define SNKWAVE_WAVEFORM_LENGTH 16 //************************************************************************** // INTERFACE CONFIGURATION MACROS //************************************************************************** #define MCFG_SNKWAVE_ADD(_tag, _clock) \ MCFG_DEVICE_ADD(_tag, SNKWAVE, _clock) #define MCFG_SNKWAVE_REPLACE(_tag, _clock) \ MCFG_DEVICE_REPLACE(_tag, SNKWAVE, _clock) //************************************************************************** // TYPE DEFINITIONS //************************************************************************** // ======================> snkwave_device class snkwave_device : public device_t, public device_sound_interface { public: snkwave_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock); ~snkwave_device() { } protected: // device-level overrides virtual void device_start(); // sound stream update overrides virtual void sound_stream_update(sound_stream &stream, stream_sample_t **inputs, stream_sample_t **outputs, int samples); public: DECLARE_WRITE8_MEMBER( snkwave_w ); private: void update_waveform(unsigned int offset, UINT8 data); private: sound_stream *m_stream; int m_external_clock; int m_sample_rate; // data about the sound system UINT32 m_frequency; UINT32 m_counter; int m_waveform_position; // decoded waveform table INT16 m_waveform[SNKWAVE_WAVEFORM_LENGTH]; }; extern const device_type SNKWAVE; #endif /* __SNKWAVE_H__ */