// license:BSD-3-Clause // copyright-holders:Olivier Galibert, R. Belmont, hap /* ZOOM ZSG-2 custom wavetable synthesizer */ #ifndef MAME_SOUND_ZSG2_H #define MAME_SOUND_ZSG2_H #pragma once //************************************************************************** // INTERFACE CONFIGURATION MACROS //************************************************************************** #define MCFG_ZSG2_ADD(_tag, _clock) \ MCFG_DEVICE_ADD(_tag, ZSG2, _clock) #define MCFG_ZSG2_REPLACE(_tag, _clock) \ MCFG_DEVICE_REPLACE(_tag, ZSG2, _clock) #define MCFG_ZSG2_EXT_READ_HANDLER(_devcb) \ devcb = &downcast(*device).set_ext_read_handler(DEVCB_##_devcb); // ======================> zsg2_device class zsg2_device : public device_t, public device_sound_interface { public: zsg2_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock); // configuration helpers template devcb_base &set_ext_read_handler(Object &&cb) { return m_ext_read_handler.set_callback(std::forward(cb)); } DECLARE_READ16_MEMBER(read); DECLARE_WRITE16_MEMBER(write); protected: // device-level overrides virtual void device_start() override; virtual void device_reset() 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: // 16 registers per channel, 48 channels struct zchan { uint16_t v[16]; bool is_playing; int16_t *samples; uint32_t cur_pos; uint32_t step_ptr; uint32_t step; uint32_t start_pos; uint32_t end_pos; uint32_t loop_pos; uint32_t page; uint16_t vol; uint16_t flags; uint8_t panl; uint8_t panr; }; zchan m_chan[48]; required_region_ptr m_mem_base; uint32_t m_read_address; std::unique_ptr m_mem_copy; uint32_t m_mem_blocks; std::unique_ptr m_full_samples; sound_stream *m_stream; devcb_read32 m_ext_read_handler; uint32_t read_memory(uint32_t offset); void chan_w(int ch, int reg, uint16_t data); uint16_t chan_r(int ch, int reg); void control_w(int reg, uint16_t data); uint16_t control_r(int reg); int16_t *prepare_samples(uint32_t offset); }; DECLARE_DEVICE_TYPE(ZSG2, zsg2_device) #endif // MAME_SOUND_ZSG2_H