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// license:BSD-3-Clause
// copyright-holders:Ernesto Corvi
#ifndef MAME_SOUND_3812INTF_H
#define MAME_SOUND_3812INTF_H
class ym3812_device : public device_t, public device_sound_interface
{
public:
ym3812_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock);
// configuration helpers
auto irq_handler() { return m_irq_handler.bind(); }
u8 read(offs_t offset);
void write(offs_t offset, u8 data);
u8 status_port_r();
u8 read_port_r();
void control_port_w(u8 data);
void write_port_w(u8 data);
protected:
// device-level overrides
virtual void device_start() override;
virtual void device_stop() override;
virtual void device_reset() override;
virtual void device_clock_changed() override;
virtual void device_timer(emu_timer &timer, device_timer_id id, int param, void *ptr) override;
// sound stream update overrides
virtual void sound_stream_update_legacy(sound_stream &stream, stream_sample_t const * const *inputs, stream_sample_t * const *outputs, int samples) override;
private:
enum
{
TIMER_A,
TIMER_B,
TIMER_IRQ_SYNC
};
void irq_handler(int irq);
void timer_handler(int c, const attotime &period);
void update_request() { m_stream->update(); }
void calculate_rates();
static void static_irq_handler(device_t *param, int irq) { downcast<ym3812_device *>(param)->irq_handler(irq); }
static void static_timer_handler(device_t *param, int c, const attotime &period) { downcast<ym3812_device *>(param)->timer_handler(c, period); }
static void static_update_request(device_t *param, int interval) { downcast<ym3812_device *>(param)->update_request(); }
sound_stream * m_stream;
emu_timer * m_timer[3];
void * m_chip;
devcb_write_line m_irq_handler;
};
DECLARE_DEVICE_TYPE(YM3812, ym3812_device)
#endif // MAME_SOUND_3812INTF_H
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