Holger Hans Peter Freyther | 63f29d6 | 2013-10-19 19:04:03 +0200 | [diff] [blame] | 1 | /* encoding.cpp |
| 2 | * |
| 3 | * Copyright (C) 2012 Ivan Klyuchnikov |
| 4 | * Copyright (C) 2012 Andreas Eversberg <jolly@eversberg.eu> |
| 5 | * Copyright (C) 2013 by Holger Hans Peter Freyther |
| 6 | * |
| 7 | * This program is free software; you can redistribute it and/or |
| 8 | * modify it under the terms of the GNU General Public License |
| 9 | * as published by the Free Software Foundation; either version 2 |
| 10 | * of the License, or (at your option) any later version. |
| 11 | * |
| 12 | * This program is distributed in the hope that it will be useful, |
| 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 15 | * GNU General Public License for more details. |
| 16 | * |
| 17 | * You should have received a copy of the GNU General Public License |
| 18 | * along with this program; if not, write to the Free Software |
| 19 | * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
| 20 | */ |
| 21 | #pragma once |
| 22 | |
| 23 | #include <stdint.h> |
| 24 | #include <gsm_rlcmac.h> |
| 25 | |
| 26 | struct gprs_rlcmac_bts; |
| 27 | struct gprs_rlcmac_tbf; |
| 28 | struct bitvec; |
| 29 | |
| 30 | /** |
| 31 | * I help with encoding data into CSN1 messages. |
| 32 | * TODO: Nobody can remember a function signature like this. One should |
| 33 | * fill out a struct with the request parameters and then hand the struct |
| 34 | * to the code. |
| 35 | */ |
| 36 | class Encoding { |
| 37 | public: |
| 38 | static int write_immediate_assignment( |
| 39 | struct gprs_rlcmac_bts *bts, |
| 40 | bitvec * dest, uint8_t downlink, uint8_t ra, |
| 41 | uint32_t ref_fn, uint8_t ta, uint16_t arfcn, uint8_t ts, uint8_t tsc, |
| 42 | uint8_t tfi, uint8_t usf, uint32_t tlli, uint8_t polling, |
| 43 | uint32_t fn, uint8_t single_block, uint8_t alpha, uint8_t gamma, |
| 44 | int8_t ta_idx); |
| 45 | |
| 46 | static void write_packet_uplink_assignment( |
| 47 | struct gprs_rlcmac_bts *bts, |
| 48 | bitvec * dest, uint8_t old_tfi, |
| 49 | uint8_t old_downlink, uint32_t tlli, uint8_t use_tlli, |
| 50 | struct gprs_rlcmac_tbf *tbf, uint8_t poll, uint8_t alpha, |
| 51 | uint8_t gamma, int8_t ta_idx); |
| 52 | |
| 53 | static void write_packet_downlink_assignment(RlcMacDownlink_t * block, uint8_t old_tfi, |
| 54 | uint8_t old_downlink, struct gprs_rlcmac_tbf *tbf, uint8_t poll, |
| 55 | uint8_t alpha, uint8_t gamma, int8_t ta_idx, uint8_t ta_ts); |
| 56 | |
Daniel Willmann | 5241c1a | 2013-12-11 14:35:29 +0100 | [diff] [blame] | 57 | static void encode_rbb(const char *show_rbb, uint8_t *rbb); |
| 58 | |
Holger Hans Peter Freyther | 63f29d6 | 2013-10-19 19:04:03 +0200 | [diff] [blame] | 59 | static void write_packet_uplink_ack(struct gprs_rlcmac_bts *bts, RlcMacDownlink_t * block, struct gprs_rlcmac_tbf *tbf, |
| 60 | uint8_t final); |
| 61 | |
| 62 | static int write_paging_request(bitvec * dest, uint8_t *ptmsi, uint16_t ptmsi_len); |
| 63 | |
| 64 | static unsigned write_repeated_page_info(bitvec * dest, unsigned& wp, uint8_t len, |
| 65 | uint8_t *identity, uint8_t chan_needed); |
| 66 | |
| 67 | static unsigned write_packet_paging_request(bitvec * dest); |
| 68 | }; |