// license:BSD-3-Clause // copyright-holders:Aaron Giles /********************************************************* Konami 054539 PCM Sound Chip *********************************************************/ #ifndef MAME_SOUND_K054539_H #define MAME_SOUND_K054539_H #pragma once #define K054539_CB_MEMBER(_name) void _name(double left, double right) class k054539_device : public device_t, public device_sound_interface, public device_rom_interface { public: // control flags, may be set at DRIVER_INIT(). enum { RESET_FLAGS = 0, REVERSE_STEREO = 1, DISABLE_REVERB = 2, UPDATE_AT_KEYON = 4 }; using apan_delegate = device_delegate; // construction/destruction k054539_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock); // configuration helpers auto timer_handler() { return m_timer_handler.bind(); } template void set_analog_callback(T &&... args) { m_apan_cb.set(std::forward(args)...); } void write(offs_t offset, u8 data); u8 read(offs_t offset); void init_flags(int flags); /* Note that the eight PCM channels of a K054539 do not have separate volume controls. Considering the global attenuation equation may not be entirely accurate, k054539_set_gain() provides means to control channel gain. It can be called anywhere but preferably from DRIVER_INIT(). Parameters: channel : 0 - 7 gain : 0.0=silent, 1.0=no gain, 2.0=twice as loud, etc. */ void set_gain(int channel, double gain); protected: // device-level overrides virtual void device_start() override; virtual void device_clock_changed() override; virtual void device_reset() override; virtual void device_post_load() override; virtual void device_timer(emu_timer &timer, device_timer_id id, int param, void *ptr) override; // device_sound_interface overrides virtual void sound_stream_update(sound_stream &stream, stream_sample_t **inputs, stream_sample_t **outputs, int samples) override; // device_rom_interface overrides virtual void rom_bank_updated() override; private: struct channel { uint32_t pos; uint32_t pfrac; int32_t val; int32_t pval; }; double voltab[256]; double pantab[0xf]; double gain[8]; uint8_t posreg_latch[8][3]; int flags; unsigned char regs[0x230]; std::unique_ptr ram; int reverb_pos; int32_t cur_ptr; int cur_limit; uint32_t rom_addr; channel channels[8]; sound_stream *stream; emu_timer *m_timer; uint32_t m_timer_state; devcb_write_line m_timer_handler; apan_delegate m_apan_cb; bool regupdate(); void keyon(int channel); void keyoff(int channel); void init_chip(); }; DECLARE_DEVICE_TYPE(K054539, k054539_device) #endif // MAME_SOUND_K054539_H