libosmogsm
0.11.0-dirty
Osmocom GSM library
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00001 00004 /* 00005 * (C) 2016 by sysmocom - s.f.m.c. GmbH, Author: Philipp Maier 00006 * All Rights Reserved 00007 * 00008 * SPDX-License-Identifier: GPL-2.0+ 00009 * 00010 * This program is free software; you can redistribute it and/or modify 00011 * it under the terms of the GNU General Public License as published by 00012 * the Free Software Foundation; either version 2 of the License, or 00013 * (at your option) any later version. 00014 * 00015 * This program is distributed in the hope that it will be useful, 00016 * but WITHOUT ANY WARRANTY; without even the implied warranty of 00017 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 00018 * GNU General Public License for more details. 00019 * 00020 * You should have received a copy of the GNU General Public License 00021 * along with this program. If not, see <http://www.gnu.org/licenses/>. 00022 * 00023 */ 00024 #pragma once 00025 00026 struct sockaddr_storage; 00027 00028 #include <osmocom/gsm/protocol/gsm_08_08.h> 00029 #include <osmocom/gsm/protocol/gsm_04_08.h> 00030 #include <osmocom/gsm/gsm23003.h> 00031 #include <osmocom/gsm/gsm_utils.h> 00032 00034 #define GSM0808_CELL_ID_LIST2_MAXLEN 127 00035 00039 union gsm0808_cell_id_u { 00040 struct osmo_cell_global_id global; 00041 struct osmo_lac_and_ci_id lac_and_ci; 00042 uint16_t ci; 00043 struct osmo_location_area_id lai_and_lac; 00044 uint16_t lac; 00045 }; 00046 00048 struct gsm0808_cell_id { 00049 enum CELL_IDENT id_discr; 00050 union gsm0808_cell_id_u id; 00051 }; 00052 00054 struct gsm0808_cell_id_list2 { 00055 enum CELL_IDENT id_discr; 00056 union gsm0808_cell_id_u id_list[GSM0808_CELL_ID_LIST2_MAXLEN]; 00057 unsigned int id_list_len; 00058 }; 00059 00060 extern const struct value_string gsm0808_cell_id_discr_names[]; 00061 static inline const char *gsm0808_cell_id_discr_name(enum CELL_IDENT id_discr) 00062 { return get_value_string(gsm0808_cell_id_discr_names, id_discr); } 00063 00064 const char *gsm0808_cell_id_name(const struct gsm0808_cell_id *cid); 00065 const char *gsm0808_cell_id_name2(const struct gsm0808_cell_id *cid); 00066 const char *gsm0808_cell_id_list_name(const struct gsm0808_cell_id_list2 *cil); 00067 int gsm0808_cell_id_list_name_buf(char *buf, size_t buflen, const struct gsm0808_cell_id_list2 *cil); 00068 int gsm0808_cell_id_u_name(char *buf, size_t buflen, 00069 enum CELL_IDENT id_discr, const union gsm0808_cell_id_u *u); 00070 00071 uint8_t gsm0808_enc_aoip_trasp_addr(struct msgb *msg, 00072 const struct sockaddr_storage *ss); 00073 int gsm0808_dec_aoip_trasp_addr(struct sockaddr_storage *ss, 00074 const uint8_t *elem, uint8_t len); 00075 uint8_t gsm0808_enc_speech_codec(struct msgb *msg, 00076 const struct gsm0808_speech_codec *sc); 00077 int gsm0808_dec_speech_codec(struct gsm0808_speech_codec *sc, 00078 const uint8_t *elem, uint8_t len); 00079 uint8_t gsm0808_enc_speech_codec_list(struct msgb *msg, 00080 const struct gsm0808_speech_codec_list 00081 *scl); 00082 int gsm0808_dec_speech_codec_list(struct gsm0808_speech_codec_list *scl, 00083 const uint8_t *elem, uint8_t len); 00084 uint8_t gsm0808_enc_channel_type(struct msgb *msg, 00085 const struct gsm0808_channel_type *ct); 00086 int gsm0808_dec_channel_type(struct gsm0808_channel_type *ct, 00087 const uint8_t *elem, uint8_t len); 00088 uint8_t gsm0808_enc_encrypt_info(struct msgb *msg, 00089 const struct gsm0808_encrypt_info *ei); 00090 int gsm0808_dec_encrypt_info(struct gsm0808_encrypt_info *ei, 00091 const uint8_t *elem, uint8_t len); 00092 uint8_t gsm0808_enc_cell_id_list2(struct msgb *msg, const struct gsm0808_cell_id_list2 *cil); 00093 uint8_t gsm0808_enc_cell_id_list(struct msgb *msg, 00094 const struct gsm0808_cell_id_list *cil) 00095 OSMO_DEPRECATED("use gsm0808_enc_cell_id_list2 instead"); 00096 int gsm0808_dec_cell_id_list2(struct gsm0808_cell_id_list2 *cil, const uint8_t *elem, uint8_t len); 00097 int gsm0808_dec_cell_id_list(struct gsm0808_cell_id_list *cil, 00098 const uint8_t *elem, uint8_t len) 00099 OSMO_DEPRECATED("use gsm0808_dec_cell_id_list2 instead"); 00100 int gsm0808_cell_id_list_add(struct gsm0808_cell_id_list2 *dst, const struct gsm0808_cell_id_list2 *src); 00101 uint8_t gsm0808_enc_cell_id(struct msgb *msg, const struct gsm0808_cell_id *ci); 00102 int gsm0808_dec_cell_id(struct gsm0808_cell_id *ci, const uint8_t *elem, uint8_t len); 00103 int gsm0808_chan_type_to_speech_codec(uint8_t perm_spch); 00104 int gsm0808_speech_codec_from_chan_type(struct gsm0808_speech_codec *sc, 00105 uint8_t perm_spch); 00106 00108 static inline uint8_t gsm0808_current_channel_type_1(enum gsm_chan_t type) 00109 { 00110 switch (type) { 00111 default: 00112 return 0; 00113 case GSM_LCHAN_SDCCH: 00114 return 0x01; 00115 case GSM_LCHAN_TCH_F: 00116 return 0x18; 00117 case GSM_LCHAN_TCH_H: 00118 return 0x19; 00119 } 00120 } 00121 00124 static inline enum gsm0808_permitted_speech gsm0808_permitted_speech(enum gsm_chan_t type, 00125 enum gsm48_chan_mode mode) 00126 { 00127 switch (mode) { 00128 case GSM48_CMODE_SPEECH_V1: 00129 switch (type) { 00130 case GSM_LCHAN_TCH_F: 00131 return GSM0808_PERM_FR1; 00132 case GSM_LCHAN_TCH_H: 00133 return GSM0808_PERM_HR1; 00134 default: 00135 return 0; 00136 } 00137 case GSM48_CMODE_SPEECH_EFR: 00138 switch (type) { 00139 case GSM_LCHAN_TCH_F: 00140 return GSM0808_PERM_FR2; 00141 case GSM_LCHAN_TCH_H: 00142 return GSM0808_PERM_HR2; 00143 default: 00144 return 0; 00145 } 00146 case GSM48_CMODE_SPEECH_AMR: 00147 switch (type) { 00148 case GSM_LCHAN_TCH_F: 00149 return GSM0808_PERM_HR3; 00150 case GSM_LCHAN_TCH_H: 00151 return GSM0808_PERM_HR3; 00152 default: 00153 return 0; 00154 } 00155 default: 00156 return 0; 00157 } 00158 } 00159 00161 static inline uint8_t gsm0808_chosen_channel(enum gsm_chan_t type, enum gsm48_chan_mode mode) 00162 { 00163 uint8_t channel_mode = 0, channel = 0; 00164 00165 switch (mode) { 00166 case GSM48_CMODE_SPEECH_V1: 00167 case GSM48_CMODE_SPEECH_EFR: 00168 case GSM48_CMODE_SPEECH_AMR: 00169 channel_mode = 0x9; 00170 break; 00171 case GSM48_CMODE_SIGN: 00172 channel_mode = 0x8; 00173 break; 00174 case GSM48_CMODE_DATA_14k5: 00175 channel_mode = 0xe; 00176 break; 00177 case GSM48_CMODE_DATA_12k0: 00178 channel_mode = 0xb; 00179 break; 00180 case GSM48_CMODE_DATA_6k0: 00181 channel_mode = 0xc; 00182 break; 00183 case GSM48_CMODE_DATA_3k6: 00184 channel_mode = 0xd; 00185 break; 00186 default: 00187 return 0; 00188 } 00189 00190 switch (type) { 00191 case GSM_LCHAN_NONE: 00192 channel = 0x0; 00193 break; 00194 case GSM_LCHAN_SDCCH: 00195 channel = 0x1; 00196 break; 00197 case GSM_LCHAN_TCH_F: 00198 channel = 0x8; 00199 break; 00200 case GSM_LCHAN_TCH_H: 00201 channel = 0x9; 00202 break; 00203 default: 00204 return 0; 00205 } 00206 00207 return channel_mode << 4 | channel; 00208 } 00209 00210 const char *gsm0808_channel_type_name(const struct gsm0808_channel_type *ct); 00211