75 lines
2.1 KiB
C
75 lines
2.1 KiB
C
/* frequency-utils.h
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* Frequency conversion utility definitions
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*
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* $Id$
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*
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* Wireshark - Network traffic analyzer
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* By Gerald Combs <gerald@wireshark.org>
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* Copyright 2007 Gerald Combs
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#ifndef __FREQUENCY_UTILS_H__
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#define __FREQUENCY_UTILS_H__
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/** @file
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* Frequency and channel conversion utilities.
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*/
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/**
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* Given a center frequency in MHz, return a channel number.
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* @param freq Frequency in MHz.
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* @return The equivalent channel or -1 if no match is found.
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*/
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gint
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ieee80211_mhz_to_chan(guint freq);
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/**
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* Given a channel number and a band type, return a center frequency.
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* @param chan Channel number
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* @param is_bg TRUE if the channel is a b/g channel, FALSE otherwise.
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* @return The equivalent frequency or 0 if no match is found.
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*/
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guint
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ieee80211_chan_to_mhz(gint chan, gboolean is_bg);
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/**
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* Given a frequency in MHz, return a string representation.
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* @param freq Frequench in MHz.
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* @return A string showing the frequency, channel number, and type. The string must be freed with g_free() after use.
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*/
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gchar*
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ieee80211_mhz_to_str(guint freq);
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/* Should this be "(freq < 4920)", or something else? */
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#define FREQ_IS_BG(freq) (freq <= 2484)
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/*
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* Editor modelines
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*
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* Local Variables:
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* c-basic-offset: 4
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* tab-width: 8
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* indent-tabs-mode: nil
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* End:
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*
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* ex: set shiftwidth=4 tabstop=8 expandtab:
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* :indentSize=4:tabSize=8:noTabs=true:
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*/
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#endif /* __FREQUENCY_UTILS_H__ */
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