Jacob Erlbeck | 409f980 | 2015-11-30 18:06:50 +0100 | [diff] [blame] | 1 | /* gprs_coding_scheme.cpp |
| 2 | * |
| 3 | * Copyright (C) 2015 by Sysmocom s.f.m.c. GmbH |
| 4 | * Author: Jacob Erlbeck <jerlbeck@sysmocom.de> |
| 5 | * |
| 6 | * This program is free software; you can redistribute it and/or |
| 7 | * modify it under the terms of the GNU General Public License |
| 8 | * as published by the Free Software Foundation; either version 2 |
| 9 | * of the License, or (at your option) any later version. |
| 10 | * |
| 11 | * This program is distributed in the hope that it will be useful, |
| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 14 | * GNU General Public License for more details. |
| 15 | * |
| 16 | * You should have received a copy of the GNU General Public License |
| 17 | * along with this program; if not, write to the Free Software |
| 18 | * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
| 19 | */ |
| 20 | |
| 21 | |
| 22 | #include "gprs_coding_scheme.h" |
| 23 | |
Max | e43ef21 | 2019-03-05 14:44:10 +0100 | [diff] [blame] | 24 | #define MAX_NUM_ARQ 2 /* max. number of ARQ */ |
| 25 | #define MAX_NUM_MCS 9 /* max. number of MCS */ |
| 26 | |
Aravind Sirsikar | 9149552 | 2016-07-12 14:17:12 +0530 | [diff] [blame] | 27 | /* |
| 28 | * 44.060 Table 8.1.1.1 and Table 8.1.1.2 |
| 29 | * It has 3 level indexing. 0th level is ARQ type |
| 30 | * 1st level is Original MCS( index 0 corresponds to MCS1 and so on) |
| 31 | * 2nd level is MS MCS (index 0 corresponds to MCS1 and so on) |
| 32 | */ |
Max | e43ef21 | 2019-03-05 14:44:10 +0100 | [diff] [blame] | 33 | static enum CodingScheme egprs_mcs_retx_tbl[MAX_NUM_ARQ] |
Aravind Sirsikar | 9149552 | 2016-07-12 14:17:12 +0530 | [diff] [blame] | 34 | [MAX_NUM_MCS][MAX_NUM_MCS] = { |
| 35 | { |
| 36 | {MCS1, MCS1, MCS1, MCS1, MCS1, MCS1, MCS1, MCS1, MCS1}, |
| 37 | {MCS2, MCS2, MCS2, MCS2, MCS2, MCS2, MCS2, MCS2, MCS2}, |
| 38 | {MCS3, MCS3, MCS3, MCS3, MCS3, MCS3, MCS3, MCS3, MCS3}, |
| 39 | {MCS1, MCS1, MCS1, MCS4, MCS4, MCS4, MCS4, MCS4, MCS4}, |
| 40 | {MCS2, MCS2, MCS2, MCS2, MCS5, MCS5, MCS7, MCS7, MCS7}, |
| 41 | {MCS3, MCS3, MCS3, MCS3, MCS3, MCS6, MCS6, MCS6, MCS9}, |
| 42 | {MCS2, MCS2, MCS2, MCS2, MCS5, MCS5, MCS7, MCS7, MCS7}, |
| 43 | {MCS3, MCS3, MCS3, MCS3, MCS3, MCS6, MCS6, MCS8, MCS8}, |
| 44 | {MCS3, MCS3, MCS3, MCS3, MCS3, MCS6, MCS6, MCS6, MCS9} |
| 45 | }, |
| 46 | { |
| 47 | {MCS1, MCS1, MCS1, MCS1, MCS1, MCS1, MCS1, MCS1, MCS1}, |
| 48 | {MCS2, MCS2, MCS2, MCS2, MCS2, MCS2, MCS2, MCS2, MCS2}, |
| 49 | {MCS3, MCS3, MCS3, MCS3, MCS3, MCS3, MCS3, MCS3, MCS3}, |
| 50 | {MCS4, MCS4, MCS4, MCS4, MCS4, MCS4, MCS4, MCS4, MCS4}, |
| 51 | {MCS5, MCS5, MCS5, MCS5, MCS5, MCS5, MCS7, MCS7, MCS7}, |
| 52 | {MCS6, MCS6, MCS6, MCS6, MCS6, MCS6, MCS6, MCS6, MCS9}, |
| 53 | {MCS5, MCS5, MCS5, MCS5, MCS5, MCS5, MCS7, MCS7, MCS7}, |
| 54 | {MCS6, MCS6, MCS6, MCS6, MCS6, MCS6, MCS6, MCS8, MCS8}, |
| 55 | {MCS6, MCS6, MCS6, MCS6, MCS6, MCS6, MCS6, MCS6, MCS9} |
| 56 | } |
| 57 | }; |
| 58 | |
Max | 807dde0 | 2019-02-26 19:59:46 +0100 | [diff] [blame] | 59 | enum Family { |
| 60 | FAMILY_INVALID, |
| 61 | FAMILY_A, |
| 62 | FAMILY_B, |
| 63 | FAMILY_C, |
| 64 | }; |
| 65 | |
Max | e43ef21 | 2019-03-05 14:44:10 +0100 | [diff] [blame] | 66 | CodingScheme GprsCodingScheme::get_retx_mcs(const GprsCodingScheme mcs, |
| 67 | const GprsCodingScheme demanded_mcs, |
| 68 | const unsigned arq_type) |
| 69 | { |
| 70 | OSMO_ASSERT(mcs.to_num() > 0); |
| 71 | OSMO_ASSERT(demanded_mcs.to_num() > 0); |
| 72 | |
| 73 | return egprs_mcs_retx_tbl[arq_type][mcs.to_num() - 1][demanded_mcs.to_num() - 1]; |
| 74 | } |
| 75 | |
Jacob Erlbeck | 409f980 | 2015-11-30 18:06:50 +0100 | [diff] [blame] | 76 | static struct { |
| 77 | struct { |
Max | b3a17d6 | 2017-12-21 12:11:33 +0100 | [diff] [blame] | 78 | uint8_t bytes; |
| 79 | uint8_t ext_bits; |
| 80 | uint8_t data_header_bits; |
Jacob Erlbeck | 409f980 | 2015-11-30 18:06:50 +0100 | [diff] [blame] | 81 | } uplink, downlink; |
Max | b3a17d6 | 2017-12-21 12:11:33 +0100 | [diff] [blame] | 82 | uint8_t data_bytes; |
| 83 | uint8_t optional_padding_bits; |
Jacob Erlbeck | 409f980 | 2015-11-30 18:06:50 +0100 | [diff] [blame] | 84 | const char *name; |
Jacob Erlbeck | 6c3dc61 | 2015-12-14 10:21:26 +0100 | [diff] [blame] | 85 | GprsCodingScheme::HeaderType data_hdr; |
Max | 807dde0 | 2019-02-26 19:59:46 +0100 | [diff] [blame] | 86 | enum Family family; |
Max | bea2edb | 2019-03-06 17:04:59 +0100 | [diff] [blame] | 87 | } mcs_info[NUM_SCHEMES] = { |
Jacob Erlbeck | 215e18c | 2016-02-03 18:22:34 +0100 | [diff] [blame] | 88 | {{0, 0}, {0, 0}, 0, 0, "UNKNOWN", |
Max | 807dde0 | 2019-02-26 19:59:46 +0100 | [diff] [blame] | 89 | GprsCodingScheme::HEADER_INVALID, FAMILY_INVALID}, |
Jacob Erlbeck | 215e18c | 2016-02-03 18:22:34 +0100 | [diff] [blame] | 90 | {{23, 0}, {23, 0}, 20, 0, "CS-1", |
Max | 807dde0 | 2019-02-26 19:59:46 +0100 | [diff] [blame] | 91 | GprsCodingScheme::HEADER_GPRS_DATA, FAMILY_INVALID}, |
Jacob Erlbeck | 215e18c | 2016-02-03 18:22:34 +0100 | [diff] [blame] | 92 | {{33, 7}, {33, 7}, 30, 0, "CS-2", |
Max | 807dde0 | 2019-02-26 19:59:46 +0100 | [diff] [blame] | 93 | GprsCodingScheme::HEADER_GPRS_DATA, FAMILY_INVALID}, |
Jacob Erlbeck | 215e18c | 2016-02-03 18:22:34 +0100 | [diff] [blame] | 94 | {{39, 3}, {39, 3}, 36, 0, "CS-3", |
Max | 807dde0 | 2019-02-26 19:59:46 +0100 | [diff] [blame] | 95 | GprsCodingScheme::HEADER_GPRS_DATA, FAMILY_INVALID}, |
Jacob Erlbeck | 215e18c | 2016-02-03 18:22:34 +0100 | [diff] [blame] | 96 | {{53, 7}, {53, 7}, 50, 0, "CS-4", |
Max | 807dde0 | 2019-02-26 19:59:46 +0100 | [diff] [blame] | 97 | GprsCodingScheme::HEADER_GPRS_DATA, FAMILY_INVALID}, |
Jacob Erlbeck | 409f980 | 2015-11-30 18:06:50 +0100 | [diff] [blame] | 98 | |
Jacob Erlbeck | 215e18c | 2016-02-03 18:22:34 +0100 | [diff] [blame] | 99 | {{26, 1}, {26, 1}, 22, 0, "MCS-1", |
Max | 807dde0 | 2019-02-26 19:59:46 +0100 | [diff] [blame] | 100 | GprsCodingScheme::HEADER_EGPRS_DATA_TYPE_3, FAMILY_C}, |
Jacob Erlbeck | 215e18c | 2016-02-03 18:22:34 +0100 | [diff] [blame] | 101 | {{32, 1}, {32, 1}, 28, 0, "MCS-2", |
Max | 807dde0 | 2019-02-26 19:59:46 +0100 | [diff] [blame] | 102 | GprsCodingScheme::HEADER_EGPRS_DATA_TYPE_3, FAMILY_B}, |
Jacob Erlbeck | 215e18c | 2016-02-03 18:22:34 +0100 | [diff] [blame] | 103 | {{41, 1}, {41, 1}, 37, 48, "MCS-3", |
Max | 807dde0 | 2019-02-26 19:59:46 +0100 | [diff] [blame] | 104 | GprsCodingScheme::HEADER_EGPRS_DATA_TYPE_3, FAMILY_A}, |
Jacob Erlbeck | 215e18c | 2016-02-03 18:22:34 +0100 | [diff] [blame] | 105 | {{48, 1}, {48, 1}, 44, 0, "MCS-4", |
Max | 807dde0 | 2019-02-26 19:59:46 +0100 | [diff] [blame] | 106 | GprsCodingScheme::HEADER_EGPRS_DATA_TYPE_3, FAMILY_C}, |
Jacob Erlbeck | 409f980 | 2015-11-30 18:06:50 +0100 | [diff] [blame] | 107 | |
Jacob Erlbeck | 215e18c | 2016-02-03 18:22:34 +0100 | [diff] [blame] | 108 | {{60, 7}, {59, 6}, 56, 0, "MCS-5", |
Max | 807dde0 | 2019-02-26 19:59:46 +0100 | [diff] [blame] | 109 | GprsCodingScheme::HEADER_EGPRS_DATA_TYPE_2, FAMILY_B}, |
Jacob Erlbeck | 215e18c | 2016-02-03 18:22:34 +0100 | [diff] [blame] | 110 | {{78, 7}, {77, 6}, 74, 48, "MCS-6", |
Max | 807dde0 | 2019-02-26 19:59:46 +0100 | [diff] [blame] | 111 | GprsCodingScheme::HEADER_EGPRS_DATA_TYPE_2, FAMILY_A}, |
Jacob Erlbeck | 215e18c | 2016-02-03 18:22:34 +0100 | [diff] [blame] | 112 | {{118, 2}, {117, 4}, 56, 0, "MCS-7", |
Max | 807dde0 | 2019-02-26 19:59:46 +0100 | [diff] [blame] | 113 | GprsCodingScheme::HEADER_EGPRS_DATA_TYPE_1, FAMILY_B}, |
Jacob Erlbeck | 215e18c | 2016-02-03 18:22:34 +0100 | [diff] [blame] | 114 | {{142, 2}, {141, 4}, 68, 0, "MCS-8", |
Max | 807dde0 | 2019-02-26 19:59:46 +0100 | [diff] [blame] | 115 | GprsCodingScheme::HEADER_EGPRS_DATA_TYPE_1, FAMILY_A}, |
Jacob Erlbeck | 215e18c | 2016-02-03 18:22:34 +0100 | [diff] [blame] | 116 | {{154, 2}, {153, 4}, 74, 0, "MCS-9", |
Max | 807dde0 | 2019-02-26 19:59:46 +0100 | [diff] [blame] | 117 | GprsCodingScheme::HEADER_EGPRS_DATA_TYPE_1, FAMILY_A}, |
Jacob Erlbeck | 409f980 | 2015-11-30 18:06:50 +0100 | [diff] [blame] | 118 | }; |
| 119 | |
Jacob Erlbeck | 22f8087 | 2016-01-11 10:56:50 +0100 | [diff] [blame] | 120 | static struct { |
| 121 | struct { |
Max | b3a17d6 | 2017-12-21 12:11:33 +0100 | [diff] [blame] | 122 | uint8_t data_header_bits; |
Jacob Erlbeck | 22f8087 | 2016-01-11 10:56:50 +0100 | [diff] [blame] | 123 | } uplink, downlink; |
Max | b3a17d6 | 2017-12-21 12:11:33 +0100 | [diff] [blame] | 124 | uint8_t data_block_header_bits; |
| 125 | uint8_t num_blocks; |
Jacob Erlbeck | 22f8087 | 2016-01-11 10:56:50 +0100 | [diff] [blame] | 126 | const char *name; |
| 127 | } hdr_type_info[GprsCodingScheme::NUM_HEADER_TYPES] = { |
| 128 | {{0}, {0}, 0, 0, "INVALID"}, |
| 129 | {{1*8 + 0}, {1*8 + 0}, 0, 0, "CONTROL"}, |
| 130 | {{3*8 + 0}, {3*8 + 0}, 0, 1, "GPRS_DATA"}, |
| 131 | {{5*8 + 6}, {5*8 + 0}, 2, 2, "EGPRS_DATA_TYPE1"}, |
| 132 | {{4*8 + 5}, {3*8 + 4}, 2, 1, "EGPRS_DATA_TYPE2"}, |
| 133 | {{3*8 + 7}, {3*8 + 7}, 2, 1, "EGPRS_DATA_TYPE3"}, |
| 134 | }; |
Jacob Erlbeck | 409f980 | 2015-11-30 18:06:50 +0100 | [diff] [blame] | 135 | |
| 136 | GprsCodingScheme GprsCodingScheme::getBySizeUL(unsigned size) |
| 137 | { |
| 138 | switch (size) { |
| 139 | case 23: return GprsCodingScheme(CS1); |
| 140 | case 27: return GprsCodingScheme(MCS1); |
| 141 | case 33: return GprsCodingScheme(MCS2); |
| 142 | case 34: return GprsCodingScheme(CS2); |
| 143 | case 40: return GprsCodingScheme(CS3); |
| 144 | case 42: return GprsCodingScheme(MCS3); |
| 145 | case 49: return GprsCodingScheme(MCS4); |
| 146 | case 54: return GprsCodingScheme(CS4); |
| 147 | case 61: return GprsCodingScheme(MCS5); |
| 148 | case 79: return GprsCodingScheme(MCS6); |
| 149 | case 119: return GprsCodingScheme(MCS7); |
| 150 | case 143: return GprsCodingScheme(MCS8); |
| 151 | case 155: return GprsCodingScheme(MCS9); |
| 152 | } |
| 153 | |
| 154 | return GprsCodingScheme(UNKNOWN); |
| 155 | } |
| 156 | |
Max | b3a17d6 | 2017-12-21 12:11:33 +0100 | [diff] [blame] | 157 | uint8_t GprsCodingScheme::sizeUL() const |
Jacob Erlbeck | 409f980 | 2015-11-30 18:06:50 +0100 | [diff] [blame] | 158 | { |
Jacob Erlbeck | fc1b3e6 | 2016-01-11 09:58:11 +0100 | [diff] [blame] | 159 | return mcs_info[m_scheme].uplink.bytes + (spareBitsUL() ? 1 : 0); |
| 160 | } |
| 161 | |
Max | b3a17d6 | 2017-12-21 12:11:33 +0100 | [diff] [blame] | 162 | uint8_t GprsCodingScheme::usedSizeUL() const |
Jacob Erlbeck | fc1b3e6 | 2016-01-11 09:58:11 +0100 | [diff] [blame] | 163 | { |
| 164 | if (mcs_info[m_scheme].data_hdr == HEADER_GPRS_DATA) |
| 165 | return mcs_info[m_scheme].uplink.bytes; |
| 166 | else |
| 167 | return sizeUL(); |
Jacob Erlbeck | 409f980 | 2015-11-30 18:06:50 +0100 | [diff] [blame] | 168 | } |
| 169 | |
Max | b3a17d6 | 2017-12-21 12:11:33 +0100 | [diff] [blame] | 170 | uint8_t GprsCodingScheme::maxBytesUL() const |
Jacob Erlbeck | 409f980 | 2015-11-30 18:06:50 +0100 | [diff] [blame] | 171 | { |
| 172 | return mcs_info[m_scheme].uplink.bytes; |
| 173 | } |
| 174 | |
Max | b3a17d6 | 2017-12-21 12:11:33 +0100 | [diff] [blame] | 175 | uint8_t GprsCodingScheme::spareBitsUL() const |
Jacob Erlbeck | 409f980 | 2015-11-30 18:06:50 +0100 | [diff] [blame] | 176 | { |
| 177 | return mcs_info[m_scheme].uplink.ext_bits; |
| 178 | } |
| 179 | |
Max | b3a17d6 | 2017-12-21 12:11:33 +0100 | [diff] [blame] | 180 | uint8_t GprsCodingScheme::sizeDL() const |
Jacob Erlbeck | 409f980 | 2015-11-30 18:06:50 +0100 | [diff] [blame] | 181 | { |
Jacob Erlbeck | fc1b3e6 | 2016-01-11 09:58:11 +0100 | [diff] [blame] | 182 | return mcs_info[m_scheme].downlink.bytes + (spareBitsDL() ? 1 : 0); |
| 183 | } |
| 184 | |
Max | b3a17d6 | 2017-12-21 12:11:33 +0100 | [diff] [blame] | 185 | uint8_t GprsCodingScheme::usedSizeDL() const |
Jacob Erlbeck | fc1b3e6 | 2016-01-11 09:58:11 +0100 | [diff] [blame] | 186 | { |
| 187 | if (mcs_info[m_scheme].data_hdr == HEADER_GPRS_DATA) |
| 188 | return mcs_info[m_scheme].downlink.bytes; |
| 189 | else |
| 190 | return sizeDL(); |
Jacob Erlbeck | 409f980 | 2015-11-30 18:06:50 +0100 | [diff] [blame] | 191 | } |
| 192 | |
Max | b3a17d6 | 2017-12-21 12:11:33 +0100 | [diff] [blame] | 193 | uint8_t GprsCodingScheme::maxBytesDL() const |
Jacob Erlbeck | 409f980 | 2015-11-30 18:06:50 +0100 | [diff] [blame] | 194 | { |
| 195 | return mcs_info[m_scheme].downlink.bytes; |
| 196 | } |
| 197 | |
Max | b3a17d6 | 2017-12-21 12:11:33 +0100 | [diff] [blame] | 198 | uint8_t GprsCodingScheme::spareBitsDL() const |
Jacob Erlbeck | 409f980 | 2015-11-30 18:06:50 +0100 | [diff] [blame] | 199 | { |
| 200 | return mcs_info[m_scheme].downlink.ext_bits; |
| 201 | } |
| 202 | |
Max | b3a17d6 | 2017-12-21 12:11:33 +0100 | [diff] [blame] | 203 | uint8_t GprsCodingScheme::maxDataBlockBytes() const |
Jacob Erlbeck | 392a545 | 2015-12-14 10:38:29 +0100 | [diff] [blame] | 204 | { |
| 205 | return mcs_info[m_scheme].data_bytes; |
| 206 | } |
| 207 | |
Max | b3a17d6 | 2017-12-21 12:11:33 +0100 | [diff] [blame] | 208 | uint8_t GprsCodingScheme::optionalPaddingBits() const |
Jacob Erlbeck | 215e18c | 2016-02-03 18:22:34 +0100 | [diff] [blame] | 209 | { |
| 210 | return mcs_info[m_scheme].optional_padding_bits; |
| 211 | } |
| 212 | |
Max | b3a17d6 | 2017-12-21 12:11:33 +0100 | [diff] [blame] | 213 | uint8_t GprsCodingScheme::numDataBlocks() const |
Jacob Erlbeck | 392a545 | 2015-12-14 10:38:29 +0100 | [diff] [blame] | 214 | { |
Jacob Erlbeck | 22f8087 | 2016-01-11 10:56:50 +0100 | [diff] [blame] | 215 | return hdr_type_info[headerTypeData()].num_blocks; |
| 216 | } |
| 217 | |
Max | b3a17d6 | 2017-12-21 12:11:33 +0100 | [diff] [blame] | 218 | uint8_t GprsCodingScheme::numDataHeaderBitsUL() const |
Jacob Erlbeck | 22f8087 | 2016-01-11 10:56:50 +0100 | [diff] [blame] | 219 | { |
| 220 | return hdr_type_info[headerTypeData()].uplink.data_header_bits; |
| 221 | } |
| 222 | |
Max | b3a17d6 | 2017-12-21 12:11:33 +0100 | [diff] [blame] | 223 | uint8_t GprsCodingScheme::numDataHeaderBitsDL() const |
Jacob Erlbeck | 22f8087 | 2016-01-11 10:56:50 +0100 | [diff] [blame] | 224 | { |
| 225 | return hdr_type_info[headerTypeData()].downlink.data_header_bits; |
| 226 | } |
| 227 | |
Max | b3a17d6 | 2017-12-21 12:11:33 +0100 | [diff] [blame] | 228 | uint8_t GprsCodingScheme::numDataBlockHeaderBits() const |
Jacob Erlbeck | 22f8087 | 2016-01-11 10:56:50 +0100 | [diff] [blame] | 229 | { |
| 230 | return hdr_type_info[headerTypeData()].data_block_header_bits; |
Jacob Erlbeck | 392a545 | 2015-12-14 10:38:29 +0100 | [diff] [blame] | 231 | } |
| 232 | |
Jacob Erlbeck | 409f980 | 2015-11-30 18:06:50 +0100 | [diff] [blame] | 233 | const char *GprsCodingScheme::name() const |
| 234 | { |
| 235 | return mcs_info[m_scheme].name; |
| 236 | } |
Jacob Erlbeck | 6c3dc61 | 2015-12-14 10:21:26 +0100 | [diff] [blame] | 237 | |
| 238 | GprsCodingScheme::HeaderType GprsCodingScheme::headerTypeData() const |
| 239 | { |
| 240 | return mcs_info[m_scheme].data_hdr; |
| 241 | } |
Jacob Erlbeck | 4c9e549 | 2016-01-04 16:00:05 +0100 | [diff] [blame] | 242 | |
| 243 | void GprsCodingScheme::inc(Mode mode) |
| 244 | { |
| 245 | if (!isCompatible(mode)) |
| 246 | /* This should not happen. TODO: Use assert? */ |
| 247 | return; |
| 248 | |
Max | bea2edb | 2019-03-06 17:04:59 +0100 | [diff] [blame] | 249 | CodingScheme new_cs(CodingScheme(m_scheme + 1)); |
Jacob Erlbeck | 4c9e549 | 2016-01-04 16:00:05 +0100 | [diff] [blame] | 250 | if (!GprsCodingScheme(new_cs).isCompatible(mode)) |
| 251 | /* Clipping, do not change the value */ |
| 252 | return; |
| 253 | |
| 254 | m_scheme = new_cs; |
| 255 | } |
| 256 | |
| 257 | void GprsCodingScheme::dec(Mode mode) |
| 258 | { |
| 259 | if (!isCompatible(mode)) |
| 260 | /* This should not happen. TODO: Use assert? */ |
| 261 | return; |
| 262 | |
Max | bea2edb | 2019-03-06 17:04:59 +0100 | [diff] [blame] | 263 | CodingScheme new_cs(CodingScheme(m_scheme - 1)); |
Jacob Erlbeck | 4c9e549 | 2016-01-04 16:00:05 +0100 | [diff] [blame] | 264 | if (!GprsCodingScheme(new_cs).isCompatible(mode)) |
| 265 | /* Clipping, do not change the value */ |
| 266 | return; |
| 267 | |
| 268 | m_scheme = new_cs; |
| 269 | } |
| 270 | |
| 271 | void GprsCodingScheme::inc() |
| 272 | { |
| 273 | if (isGprs() && m_scheme == CS4) |
| 274 | return; |
| 275 | |
| 276 | if (isEgprs() && m_scheme == MCS9) |
| 277 | return; |
| 278 | |
| 279 | if (!isValid()) |
| 280 | return; |
| 281 | |
Max | bea2edb | 2019-03-06 17:04:59 +0100 | [diff] [blame] | 282 | m_scheme = CodingScheme(m_scheme + 1); |
Jacob Erlbeck | 4c9e549 | 2016-01-04 16:00:05 +0100 | [diff] [blame] | 283 | } |
| 284 | |
| 285 | void GprsCodingScheme::dec() |
| 286 | { |
| 287 | if (isGprs() && m_scheme == CS1) |
| 288 | return; |
| 289 | |
| 290 | if (isEgprs() && m_scheme == MCS1) |
| 291 | return; |
| 292 | |
| 293 | if (!isValid()) |
| 294 | return; |
| 295 | |
Max | bea2edb | 2019-03-06 17:04:59 +0100 | [diff] [blame] | 296 | m_scheme = CodingScheme(m_scheme - 1); |
Jacob Erlbeck | 4c9e549 | 2016-01-04 16:00:05 +0100 | [diff] [blame] | 297 | } |
Jacob Erlbeck | 7b57997 | 2016-01-05 15:54:24 +0100 | [diff] [blame] | 298 | |
| 299 | const char *GprsCodingScheme::modeName(Mode mode) |
| 300 | { |
| 301 | switch (mode) { |
| 302 | case GPRS: return "GPRS"; |
| 303 | case EGPRS_GMSK: return "EGPRS_GMSK-only"; |
| 304 | case EGPRS: return "EGPRS"; |
| 305 | default: return "???"; |
| 306 | } |
| 307 | } |
Jacob Erlbeck | 2305afd | 2016-02-03 15:25:04 +0100 | [diff] [blame] | 308 | |
| 309 | bool GprsCodingScheme::isFamilyCompatible(GprsCodingScheme o) const |
| 310 | { |
| 311 | if (*this == o) |
| 312 | return true; |
| 313 | |
Max | 807dde0 | 2019-02-26 19:59:46 +0100 | [diff] [blame] | 314 | if (mcs_info[m_scheme].family == FAMILY_INVALID) |
Jacob Erlbeck | 2305afd | 2016-02-03 15:25:04 +0100 | [diff] [blame] | 315 | return false; |
| 316 | |
Max | 807dde0 | 2019-02-26 19:59:46 +0100 | [diff] [blame] | 317 | return mcs_info[m_scheme].family == mcs_info[o.m_scheme].family; |
Jacob Erlbeck | 2305afd | 2016-02-03 15:25:04 +0100 | [diff] [blame] | 318 | } |
| 319 | |
Jacob Erlbeck | 2305afd | 2016-02-03 15:25:04 +0100 | [diff] [blame] | 320 | void GprsCodingScheme::decToSingleBlock(bool *needStuffing) |
| 321 | { |
| 322 | switch (m_scheme) { |
| 323 | case MCS7: *needStuffing = false; m_scheme = MCS5; break; |
| 324 | case MCS8: *needStuffing = true; m_scheme = MCS6; break; |
| 325 | case MCS9: *needStuffing = false; m_scheme = MCS6; break; |
| 326 | default: *needStuffing = false; break; |
| 327 | } |
| 328 | } |