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/*********************************************************************
midiin.h
MIDI In image device
*********************************************************************/
#ifndef __MIDIIN_H__
#define __MIDIIN_H__
#include "image.h"
/***************************************************************************
CONSTANTS
***************************************************************************/
struct midiin_config
{
/* callback to driver */
devcb_write_line m_input_callback;
};
#define MCFG_MIDIIN_ADD(_tag, _config) \
MCFG_DEVICE_ADD(_tag, MIDIIN, 0) \
MCFG_DEVICE_CONFIG(_config)
/***************************************************************************
TYPE DEFINITIONS
***************************************************************************/
class midiin_device : public device_t,
public device_image_interface,
public device_serial_interface,
public midiin_config
{
public:
// construction/destruction
midiin_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);
// image-level overrides
virtual bool call_load();
virtual void call_unload();
// image device
virtual iodevice_t image_type() const { return IO_MIDIIN; }
virtual bool is_readable() const { return 1; }
virtual bool is_writeable() const { return 0; }
virtual bool is_creatable() const { return 0; }
virtual bool must_be_loaded() const { return 0; }
virtual bool is_reset_on_load() const { return 0; }
virtual const char *file_extensions() const { return "mid"; }
virtual bool core_opens_image_file() const { return FALSE; }
virtual const option_guide *create_option_guide() const { return NULL; }
protected:
// device-level overrides
virtual void device_start();
virtual void device_reset();
virtual void device_timer(emu_timer &timer, device_timer_id id, int param, void *ptr);
virtual void device_config_complete();
// serial overrides
virtual void tra_complete(); // Tx completed sending byte
virtual void tra_callback(); // Tx send bit
void input_callback(UINT8 state);
private:
static const int XMIT_RING_SIZE = (8192*4*4);
void xmit_char(UINT8 data);
osd_midi_device *m_midi;
emu_timer *m_timer;
devcb_resolved_write_line m_input_func;
UINT8 m_xmitring[XMIT_RING_SIZE];
int m_xmit_read, m_xmit_write;
bool m_tx_busy;
};
// device type definition
extern const device_type MIDIIN;
// device iterator
typedef device_type_iterator<&device_creator<midiin_device>, midiin_device> midiin_device_iterator;
#endif /* __MIDIIN_H__ */
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