forked from osmocom/wireshark
73 lines
1.6 KiB
C
73 lines
1.6 KiB
C
/* frequency-utils.h
|
|
* Frequency conversion utility definitions
|
|
*
|
|
* Wireshark - Network traffic analyzer
|
|
* By Gerald Combs <gerald@wireshark.org>
|
|
* Copyright 2007 Gerald Combs
|
|
*
|
|
* SPDX-License-Identifier: GPL-2.0-or-later
|
|
*/
|
|
|
|
#ifndef __FREQUENCY_UTILS_H__
|
|
#define __FREQUENCY_UTILS_H__
|
|
|
|
#include "ws_symbol_export.h"
|
|
|
|
#ifdef __cplusplus
|
|
extern "C" {
|
|
#endif /* __cplusplus */
|
|
|
|
/** @file
|
|
* Frequency and channel conversion utilities.
|
|
*/
|
|
|
|
/**
|
|
* Given a center frequency in MHz, return a channel number.
|
|
* @param freq Frequency in MHz.
|
|
* @return The equivalent channel or -1 if no match is found.
|
|
*/
|
|
WS_DLL_PUBLIC
|
|
gint
|
|
ieee80211_mhz_to_chan(guint freq);
|
|
|
|
/**
|
|
* Given a channel number and a band type, return a center frequency.
|
|
* @param chan Channel number
|
|
* @param is_bg TRUE if the channel is a b/g channel, FALSE otherwise.
|
|
* @return The equivalent frequency or 0 if no match is found.
|
|
*/
|
|
WS_DLL_PUBLIC
|
|
guint
|
|
ieee80211_chan_to_mhz(gint chan, gboolean is_bg);
|
|
|
|
/**
|
|
* Given a frequency in MHz, return a string representation.
|
|
* @param freq Frequench in MHz.
|
|
* @return A string showing the frequency, channel number, and type. The string must be freed with g_free() after use.
|
|
*/
|
|
WS_DLL_PUBLIC
|
|
gchar*
|
|
ieee80211_mhz_to_str(guint freq);
|
|
|
|
/* Should this be "(freq < 4920)", or something else? */
|
|
#define FREQ_IS_BG(freq) (freq <= 2484)
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif /* __cplusplus */
|
|
|
|
#endif /* __FREQUENCY_UTILS_H__ */
|
|
|
|
/*
|
|
* Editor modelines
|
|
*
|
|
* Local Variables:
|
|
* c-basic-offset: 4
|
|
* tab-width: 8
|
|
* indent-tabs-mode: nil
|
|
* End:
|
|
*
|
|
* vi: set shiftwidth=4 tabstop=8 expandtab:
|
|
* :indentSize=4:tabSize=8:noTabs=true:
|
|
*/
|