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/** @file
* @brief usbhid-dump - device list
*
* Copyright (C) 2010-2011 Nikolai Kondrashov
*
* This file is part of usbhid-dump.
*
* Usbhid-dump is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* Usbhid-dump is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with usbhid-dump; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*
* @author Nikolai Kondrashov <spbnick@gmail.com>
*
* @(#) $Id$
*/
#ifndef __UHD_DEV_LIST_H__
#define __UHD_DEV_LIST_H__
#include <stddef.h>
#include "uhd/dev.h"
#ifdef __cplusplus
extern "C" {
#endif
/**
* Check if a device list is valid.
*
* @param list Device list to check.
*
* @return True if the device list is valid, false otherwise.
*/
extern bool uhd_dev_list_valid(const uhd_dev *list);
/**
* Check if a device list is empty.
*
* @param list Device list to check.
*
* @return True if the device list is empty, false otherwise.
*/
static inline bool
uhd_dev_list_empty(const uhd_dev *list)
{
return list == NULL;
}
/**
* Calculate length of a device list.
*
* @param list The list to calculate length of.
*
* @return The list length.
*/
extern size_t uhd_dev_list_len(const uhd_dev *list);
/**
* Close every device in a device list.
*
* @param list The device list to close.
*/
extern void uhd_dev_list_close(uhd_dev *list);
/**
* Iterate over a device list.
*
* @param _dev Loop device variable.
* @param _list Device list to iterate over.
*/
#define UHD_DEV_LIST_FOR_EACH(_dev, _list) \
for (_dev = _list; _dev != NULL; _dev = _dev->next)
/**
* Open a list of devices optionally matching bus number/device address and
* vendor/product IDs.
*
* @param ctx Libusb context.
* @param bus_num Bus number, or 0 for any bus.
* @param dev_addr Device address, or 0 for any address.
* @param vid Vendor ID, or 0 for any vendor.
* @param pid Product ID, or 0 for any product.
* @param plist Location for the resulting device list head; could be
* NULL.
*
* @return Libusb error code.
*/
extern enum libusb_error uhd_dev_list_open(libusb_context *ctx,
uint8_t bus_num,
uint8_t dev_addr,
uint16_t vid,
uint16_t pid,
uhd_dev **plist);
#ifdef __cplusplus
} /* extern "C" */
#endif
#endif /* __UHD_DEV_LIST_H__ */
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