device_io_control增加对待纸扫描功能的支持

hgdriver/hgdev/hg_scanner.cpp

@@ -4219,6 +4219,28 @@ int hg_scanner::device_io_control(unsigned long code, void* data, unsigned* len)
 
 		return SCANNER_ERR_OK;
 	}
+	else if (code == IO_CTRL_CODE_SET_SCAN_WHEN_PAPER_ON)
+	{
+		long l = len ? *len : sizeof(bool);
+		int ret = setting_auto_paper_scan(data, &l);
+		if (len)
+			*len = l;
+
+		return ret;
+	}
+	else if (code == IO_CTRL_CODE_GET_SCAN_WHEN_PAPER_ON)
+	{
+		if (!len)
+			return SCANNER_ERR_INVALID_PARAMETER;
+		if (*len < sizeof(bool))
+		{
+			*len = sizeof(bool);
+			return SCANNER_ERR_INSUFFICIENT_MEMORY;
+		}
+		*(bool*)data = is_auto_paper_scan;
+
+		return SCANNER_ERR_OK;
+	}
 
 	return SCANNER_ERR_DEVICE_NOT_SUPPORT;
 }