// license:GPL-2.0+ // copyright-holders:Peter Trauner /***************************************************************************** * * svis_snd.h * ****************************************************************************/ #ifndef SVIS_SND_H_ #define SVIS_SND_H_ //************************************************************************** // TYPE DEFINITIONS //************************************************************************** enum SVISION_NOISE_Type { SVISION_NOISE_Type7Bit, SVISION_NOISE_Type14Bit }; struct SVISION_NOISE { SVISION_NOISE() : on(0), right(0), left(0), play(0), type(SVISION_NOISE_Type7Bit), state(0), volume(0), count(0), step(0.0), pos(0.0), value(0) { memset(reg, 0, sizeof(UINT8)*3); } UINT8 reg[3]; int on, right, left, play; SVISION_NOISE_Type type; int state; int volume; int count; double step, pos; int value; // currently simple random function }; struct SVISION_DMA { SVISION_DMA() : on(0), right(0), left(0), ca14to16(0), start(0), size(0), pos(0.0), step(0.0), finished(0) { memset(reg, 0, sizeof(UINT8)*5); } UINT8 reg[5]; int on, right, left; int ca14to16; int start,size; double pos, step; int finished; }; struct SVISION_CHANNEL { SVISION_CHANNEL() : on(0), waveform(0), volume(0), pos(0), size(0), count(0) { memset(reg, 0, sizeof(UINT8)*4); } UINT8 reg[4]; int on; int waveform, volume; int pos; int size; int count; }; typedef device_delegate svision_snd_irq_delegate; #define SVISION_SND_IRQ_MEMBER(_name) void _name(void) #define SVISION_SND_IRQ_CB(_class, _method) \ svision_sound_device::set_irq_callback(*device, svision_snd_irq_delegate(&_class::_method, #_class "::" #_method, downcast<_class *>(owner))); // ======================> svision_sound_device class svision_sound_device : public device_t, public device_sound_interface { public: svision_sound_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock); ~svision_sound_device() { } // static configuration static void set_irq_callback(device_t &device, svision_snd_irq_delegate callback) { downcast(device).m_irq_cb = callback; } 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( sounddma_w ); DECLARE_WRITE8_MEMBER( noise_w ); public: int *dma_finished(); void sound_decrement(); void soundport_w(int which, int offset, int data); private: svision_snd_irq_delegate m_irq_cb; sound_stream *m_mixer_channel; SVISION_DMA m_dma; SVISION_NOISE m_noise; SVISION_CHANNEL m_channel[2]; }; extern const device_type SVISION_SND; #endif /* SVIS_SND_H_ */