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// license:BSD-3-Clause
// copyright-holders:Fabio Priuli
/*********************************************************************
bcreader.h
Generic barcode reader emulation.
*********************************************************************/
#ifndef __BCREADER_H_
#define __BCREADER_H_
#define MCFG_BARCODE_READER_ADD( _tag ) \
MCFG_DEVICE_ADD( _tag, BARCODE_READER, 0 )
#define MCFG_BARCODE_READER_REMOVE( _tag ) \
MCFG_DEVICE_REMOVE( _tag )
// ======================> barcode_reader_device
class barcode_reader_device : public device_t
{
public:
// construction/destruction
barcode_reader_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);
void write_code(const char *barcode, int len);
int get_pending_code() { return m_new_code; }
int get_byte_length() { return m_byte_length; }
UINT8 read_code();
int read_pixel();
// TODO: add checksum validation!
bool is_valid(int len) { return (len != 12 && len != 13 && len != 8) ? FALSE : TRUE; }
void decode(int len);
protected:
// device-level overrides
virtual void device_start();
UINT8 m_byte_data[13];
UINT8 m_pixel_data[100];
int m_byte_length;
int m_pixel_length;
int m_byte_count;
int m_pixel_count;
int m_new_code;
};
// device type definition
extern const device_type BARCODE_READER;
// device type iterator
typedef device_type_iterator<&device_creator<barcode_reader_device>, barcode_reader_device> barcode_reader_device_iterator;
#endif
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