Benny Prijono | a4bf021 | 2006-02-10 15:57:08 +0000 | [diff] [blame] | 1 | /* $Id$ */ |
| 2 | /* |
Benny Prijono | 844653c | 2008-12-23 17:27:53 +0000 | [diff] [blame] | 3 | * Copyright (C) 2008-2009 Teluu Inc. (http://www.teluu.com) |
| 4 | * Copyright (C) 2003-2008 Benny Prijono <benny@prijono.org> |
Benny Prijono | a4bf021 | 2006-02-10 15:57:08 +0000 | [diff] [blame] | 5 | * |
| 6 | * This program is free software; you can redistribute it and/or modify |
| 7 | * it under the terms of the GNU General Public License as published by |
| 8 | * the Free Software Foundation; either version 2 of the License, or |
| 9 | * (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 | #include <pjmedia-codec/gsm.h> |
| 21 | #include <pjmedia/codec.h> |
| 22 | #include <pjmedia/errno.h> |
| 23 | #include <pjmedia/endpoint.h> |
Benny Prijono | 70c6891 | 2006-05-19 15:58:13 +0000 | [diff] [blame] | 24 | #include <pjmedia/plc.h> |
Benny Prijono | f04ffdd | 2006-02-21 00:11:18 +0000 | [diff] [blame] | 25 | #include <pjmedia/port.h> |
Benny Prijono | 70c6891 | 2006-05-19 15:58:13 +0000 | [diff] [blame] | 26 | #include <pjmedia/silencedet.h> |
Benny Prijono | a4bf021 | 2006-02-10 15:57:08 +0000 | [diff] [blame] | 27 | #include <pj/assert.h> |
| 28 | #include <pj/pool.h> |
| 29 | #include <pj/string.h> |
| 30 | #include <pj/os.h> |
Benny Prijono | 7f1c90f | 2007-04-07 12:29:46 +0000 | [diff] [blame] | 31 | #include "../../third_party/gsm/inc/gsm.h" |
Benny Prijono | a4bf021 | 2006-02-10 15:57:08 +0000 | [diff] [blame] | 32 | |
Benny Prijono | 4381efe | 2006-03-16 14:24:26 +0000 | [diff] [blame] | 33 | /* |
| 34 | * Only build this file if PJMEDIA_HAS_GSM_CODEC != 0 |
| 35 | */ |
| 36 | #if defined(PJMEDIA_HAS_GSM_CODEC) && PJMEDIA_HAS_GSM_CODEC != 0 |
| 37 | |
Benny Prijono | 00d15a5 | 2008-03-04 16:23:42 +0000 | [diff] [blame] | 38 | /* We removed PLC in 0.6 (and re-enabled it again in 0.9!) */ |
| 39 | #define PLC_DISABLED 0 |
Benny Prijono | c95a0f0 | 2007-04-09 07:06:08 +0000 | [diff] [blame] | 40 | |
Benny Prijono | 4381efe | 2006-03-16 14:24:26 +0000 | [diff] [blame] | 41 | |
Benny Prijono | a4bf021 | 2006-02-10 15:57:08 +0000 | [diff] [blame] | 42 | /* Prototypes for GSM factory */ |
| 43 | static pj_status_t gsm_test_alloc( pjmedia_codec_factory *factory, |
| 44 | const pjmedia_codec_info *id ); |
| 45 | static pj_status_t gsm_default_attr( pjmedia_codec_factory *factory, |
| 46 | const pjmedia_codec_info *id, |
| 47 | pjmedia_codec_param *attr ); |
| 48 | static pj_status_t gsm_enum_codecs( pjmedia_codec_factory *factory, |
| 49 | unsigned *count, |
| 50 | pjmedia_codec_info codecs[]); |
| 51 | static pj_status_t gsm_alloc_codec( pjmedia_codec_factory *factory, |
| 52 | const pjmedia_codec_info *id, |
| 53 | pjmedia_codec **p_codec); |
| 54 | static pj_status_t gsm_dealloc_codec( pjmedia_codec_factory *factory, |
| 55 | pjmedia_codec *codec ); |
| 56 | |
| 57 | /* Prototypes for GSM implementation. */ |
Benny Prijono | a4bf021 | 2006-02-10 15:57:08 +0000 | [diff] [blame] | 58 | static pj_status_t gsm_codec_init( pjmedia_codec *codec, |
| 59 | pj_pool_t *pool ); |
| 60 | static pj_status_t gsm_codec_open( pjmedia_codec *codec, |
Benny Prijono | 6865a3f | 2006-12-30 02:46:57 +0000 | [diff] [blame] | 61 | pjmedia_codec_param *attr ); |
Benny Prijono | a4bf021 | 2006-02-10 15:57:08 +0000 | [diff] [blame] | 62 | static pj_status_t gsm_codec_close( pjmedia_codec *codec ); |
Benny Prijono | b94a6ab | 2006-12-26 21:18:11 +0000 | [diff] [blame] | 63 | static pj_status_t gsm_codec_modify(pjmedia_codec *codec, |
| 64 | const pjmedia_codec_param *attr ); |
Benny Prijono | 8befd9f | 2006-05-13 22:46:23 +0000 | [diff] [blame] | 65 | static pj_status_t gsm_codec_parse( pjmedia_codec *codec, |
| 66 | void *pkt, |
| 67 | pj_size_t pkt_size, |
| 68 | const pj_timestamp *ts, |
| 69 | unsigned *frame_cnt, |
| 70 | pjmedia_frame frames[]); |
Benny Prijono | a4bf021 | 2006-02-10 15:57:08 +0000 | [diff] [blame] | 71 | static pj_status_t gsm_codec_encode( pjmedia_codec *codec, |
| 72 | const struct pjmedia_frame *input, |
| 73 | unsigned output_buf_len, |
| 74 | struct pjmedia_frame *output); |
| 75 | static pj_status_t gsm_codec_decode( pjmedia_codec *codec, |
| 76 | const struct pjmedia_frame *input, |
| 77 | unsigned output_buf_len, |
| 78 | struct pjmedia_frame *output); |
Benny Prijono | c95a0f0 | 2007-04-09 07:06:08 +0000 | [diff] [blame] | 79 | #if !PLC_DISABLED |
Benny Prijono | 70c6891 | 2006-05-19 15:58:13 +0000 | [diff] [blame] | 80 | static pj_status_t gsm_codec_recover(pjmedia_codec *codec, |
| 81 | unsigned output_buf_len, |
| 82 | struct pjmedia_frame *output); |
Benny Prijono | c95a0f0 | 2007-04-09 07:06:08 +0000 | [diff] [blame] | 83 | #endif |
Benny Prijono | a4bf021 | 2006-02-10 15:57:08 +0000 | [diff] [blame] | 84 | |
| 85 | /* Definition for GSM codec operations. */ |
| 86 | static pjmedia_codec_op gsm_op = |
| 87 | { |
Benny Prijono | a4bf021 | 2006-02-10 15:57:08 +0000 | [diff] [blame] | 88 | &gsm_codec_init, |
| 89 | &gsm_codec_open, |
| 90 | &gsm_codec_close, |
Benny Prijono | b94a6ab | 2006-12-26 21:18:11 +0000 | [diff] [blame] | 91 | &gsm_codec_modify, |
Benny Prijono | 8befd9f | 2006-05-13 22:46:23 +0000 | [diff] [blame] | 92 | &gsm_codec_parse, |
Benny Prijono | a4bf021 | 2006-02-10 15:57:08 +0000 | [diff] [blame] | 93 | &gsm_codec_encode, |
Benny Prijono | 70c6891 | 2006-05-19 15:58:13 +0000 | [diff] [blame] | 94 | &gsm_codec_decode, |
Benny Prijono | c95a0f0 | 2007-04-09 07:06:08 +0000 | [diff] [blame] | 95 | #if !PLC_DISABLED |
Benny Prijono | 70c6891 | 2006-05-19 15:58:13 +0000 | [diff] [blame] | 96 | &gsm_codec_recover |
Benny Prijono | c95a0f0 | 2007-04-09 07:06:08 +0000 | [diff] [blame] | 97 | #else |
| 98 | NULL |
| 99 | #endif |
Benny Prijono | a4bf021 | 2006-02-10 15:57:08 +0000 | [diff] [blame] | 100 | }; |
| 101 | |
| 102 | /* Definition for GSM codec factory operations. */ |
| 103 | static pjmedia_codec_factory_op gsm_factory_op = |
| 104 | { |
| 105 | &gsm_test_alloc, |
| 106 | &gsm_default_attr, |
| 107 | &gsm_enum_codecs, |
| 108 | &gsm_alloc_codec, |
| 109 | &gsm_dealloc_codec |
| 110 | }; |
| 111 | |
| 112 | /* GSM factory */ |
| 113 | static struct gsm_codec_factory |
| 114 | { |
| 115 | pjmedia_codec_factory base; |
| 116 | pjmedia_endpt *endpt; |
| 117 | pj_pool_t *pool; |
| 118 | pj_mutex_t *mutex; |
| 119 | pjmedia_codec codec_list; |
| 120 | } gsm_codec_factory; |
| 121 | |
Benny Prijono | 70c6891 | 2006-05-19 15:58:13 +0000 | [diff] [blame] | 122 | |
Benny Prijono | a4bf021 | 2006-02-10 15:57:08 +0000 | [diff] [blame] | 123 | /* GSM codec private data. */ |
Benny Prijono | f93895c | 2006-03-05 11:50:53 +0000 | [diff] [blame] | 124 | struct gsm_data |
Benny Prijono | a4bf021 | 2006-02-10 15:57:08 +0000 | [diff] [blame] | 125 | { |
Benny Prijono | 8334ea1 | 2007-05-11 18:48:23 +0000 | [diff] [blame] | 126 | struct gsm_state *encoder; |
| 127 | struct gsm_state *decoder; |
Benny Prijono | 70c6891 | 2006-05-19 15:58:13 +0000 | [diff] [blame] | 128 | pj_bool_t plc_enabled; |
Benny Prijono | c95a0f0 | 2007-04-09 07:06:08 +0000 | [diff] [blame] | 129 | #if !PLC_DISABLED |
Benny Prijono | 70c6891 | 2006-05-19 15:58:13 +0000 | [diff] [blame] | 130 | pjmedia_plc *plc; |
Benny Prijono | c95a0f0 | 2007-04-09 07:06:08 +0000 | [diff] [blame] | 131 | #endif |
Benny Prijono | 70c6891 | 2006-05-19 15:58:13 +0000 | [diff] [blame] | 132 | pj_bool_t vad_enabled; |
| 133 | pjmedia_silence_det *vad; |
Benny Prijono | c6c0ed0 | 2007-01-20 05:18:14 +0000 | [diff] [blame] | 134 | pj_timestamp last_tx; |
Benny Prijono | a4bf021 | 2006-02-10 15:57:08 +0000 | [diff] [blame] | 135 | }; |
| 136 | |
| 137 | |
| 138 | |
| 139 | /* |
| 140 | * Initialize and register GSM codec factory to pjmedia endpoint. |
| 141 | */ |
| 142 | PJ_DEF(pj_status_t) pjmedia_codec_gsm_init( pjmedia_endpt *endpt ) |
| 143 | { |
| 144 | pjmedia_codec_mgr *codec_mgr; |
| 145 | pj_status_t status; |
| 146 | |
| 147 | if (gsm_codec_factory.pool != NULL) |
| 148 | return PJ_SUCCESS; |
| 149 | |
| 150 | /* Create GSM codec factory. */ |
| 151 | gsm_codec_factory.base.op = &gsm_factory_op; |
| 152 | gsm_codec_factory.base.factory_data = NULL; |
| 153 | gsm_codec_factory.endpt = endpt; |
| 154 | |
| 155 | gsm_codec_factory.pool = pjmedia_endpt_create_pool(endpt, "gsm", 4000, |
| 156 | 4000); |
| 157 | if (!gsm_codec_factory.pool) |
| 158 | return PJ_ENOMEM; |
| 159 | |
| 160 | pj_list_init(&gsm_codec_factory.codec_list); |
| 161 | |
| 162 | /* Create mutex. */ |
| 163 | status = pj_mutex_create_simple(gsm_codec_factory.pool, "gsm", |
| 164 | &gsm_codec_factory.mutex); |
| 165 | if (status != PJ_SUCCESS) |
| 166 | goto on_error; |
| 167 | |
| 168 | /* Get the codec manager. */ |
| 169 | codec_mgr = pjmedia_endpt_get_codec_mgr(endpt); |
| 170 | if (!codec_mgr) { |
| 171 | status = PJ_EINVALIDOP; |
| 172 | goto on_error; |
| 173 | } |
| 174 | |
| 175 | /* Register codec factory to endpoint. */ |
| 176 | status = pjmedia_codec_mgr_register_factory(codec_mgr, |
| 177 | &gsm_codec_factory.base); |
| 178 | if (status != PJ_SUCCESS) |
| 179 | goto on_error; |
| 180 | |
| 181 | /* Done. */ |
| 182 | return PJ_SUCCESS; |
| 183 | |
| 184 | on_error: |
| 185 | pj_pool_release(gsm_codec_factory.pool); |
| 186 | gsm_codec_factory.pool = NULL; |
| 187 | return status; |
| 188 | } |
| 189 | |
| 190 | |
| 191 | |
| 192 | /* |
| 193 | * Unregister GSM codec factory from pjmedia endpoint and deinitialize |
| 194 | * the GSM codec library. |
| 195 | */ |
| 196 | PJ_DEF(pj_status_t) pjmedia_codec_gsm_deinit(void) |
| 197 | { |
| 198 | pjmedia_codec_mgr *codec_mgr; |
| 199 | pj_status_t status; |
| 200 | |
| 201 | if (gsm_codec_factory.pool == NULL) |
| 202 | return PJ_SUCCESS; |
| 203 | |
| 204 | /* We don't want to deinit if there's outstanding codec. */ |
Benny Prijono | d7036a1 | 2007-03-15 10:12:57 +0000 | [diff] [blame] | 205 | /* This is silly, as we'll always have codec in the list if |
| 206 | we ever allocate a codec! A better behavior maybe is to |
| 207 | deallocate all codecs in the list. |
Benny Prijono | a4bf021 | 2006-02-10 15:57:08 +0000 | [diff] [blame] | 208 | pj_mutex_lock(gsm_codec_factory.mutex); |
| 209 | if (!pj_list_empty(&gsm_codec_factory.codec_list)) { |
| 210 | pj_mutex_unlock(gsm_codec_factory.mutex); |
| 211 | return PJ_EBUSY; |
| 212 | } |
Benny Prijono | d7036a1 | 2007-03-15 10:12:57 +0000 | [diff] [blame] | 213 | */ |
Benny Prijono | a4bf021 | 2006-02-10 15:57:08 +0000 | [diff] [blame] | 214 | |
| 215 | /* Get the codec manager. */ |
| 216 | codec_mgr = pjmedia_endpt_get_codec_mgr(gsm_codec_factory.endpt); |
| 217 | if (!codec_mgr) { |
| 218 | pj_pool_release(gsm_codec_factory.pool); |
| 219 | gsm_codec_factory.pool = NULL; |
| 220 | return PJ_EINVALIDOP; |
| 221 | } |
| 222 | |
| 223 | /* Unregister GSM codec factory. */ |
| 224 | status = pjmedia_codec_mgr_unregister_factory(codec_mgr, |
| 225 | &gsm_codec_factory.base); |
| 226 | |
| 227 | /* Destroy mutex. */ |
| 228 | pj_mutex_destroy(gsm_codec_factory.mutex); |
| 229 | |
| 230 | /* Destroy pool. */ |
| 231 | pj_pool_release(gsm_codec_factory.pool); |
| 232 | gsm_codec_factory.pool = NULL; |
| 233 | |
| 234 | return status; |
| 235 | } |
| 236 | |
| 237 | /* |
| 238 | * Check if factory can allocate the specified codec. |
| 239 | */ |
| 240 | static pj_status_t gsm_test_alloc( pjmedia_codec_factory *factory, |
| 241 | const pjmedia_codec_info *info ) |
| 242 | { |
| 243 | PJ_UNUSED_ARG(factory); |
| 244 | |
| 245 | /* Check payload type. */ |
| 246 | if (info->pt != PJMEDIA_RTP_PT_GSM) |
| 247 | return PJMEDIA_CODEC_EUNSUP; |
| 248 | |
| 249 | /* Ignore the rest, since it's static payload type. */ |
| 250 | |
| 251 | return PJ_SUCCESS; |
| 252 | } |
| 253 | |
| 254 | /* |
| 255 | * Generate default attribute. |
| 256 | */ |
| 257 | static pj_status_t gsm_default_attr (pjmedia_codec_factory *factory, |
| 258 | const pjmedia_codec_info *id, |
| 259 | pjmedia_codec_param *attr ) |
| 260 | { |
| 261 | PJ_UNUSED_ARG(factory); |
| 262 | PJ_UNUSED_ARG(id); |
| 263 | |
Benny Prijono | ac623b3 | 2006-07-03 15:19:31 +0000 | [diff] [blame] | 264 | pj_bzero(attr, sizeof(pjmedia_codec_param)); |
Benny Prijono | 8befd9f | 2006-05-13 22:46:23 +0000 | [diff] [blame] | 265 | attr->info.clock_rate = 8000; |
| 266 | attr->info.channel_cnt = 1; |
| 267 | attr->info.avg_bps = 13200; |
Nanang Izzuddin | e4b4b7d | 2008-06-06 12:15:23 +0000 | [diff] [blame] | 268 | attr->info.max_bps = 13200; |
Benny Prijono | 8befd9f | 2006-05-13 22:46:23 +0000 | [diff] [blame] | 269 | attr->info.pcm_bits_per_sample = 16; |
| 270 | attr->info.frm_ptime = 20; |
| 271 | attr->info.pt = PJMEDIA_RTP_PT_GSM; |
| 272 | |
| 273 | attr->setting.frm_per_pkt = 1; |
Benny Prijono | 70c6891 | 2006-05-19 15:58:13 +0000 | [diff] [blame] | 274 | attr->setting.vad = 1; |
Benny Prijono | c95a0f0 | 2007-04-09 07:06:08 +0000 | [diff] [blame] | 275 | #if !PLC_DISABLED |
Benny Prijono | 70c6891 | 2006-05-19 15:58:13 +0000 | [diff] [blame] | 276 | attr->setting.plc = 1; |
Benny Prijono | c95a0f0 | 2007-04-09 07:06:08 +0000 | [diff] [blame] | 277 | #endif |
Benny Prijono | a4bf021 | 2006-02-10 15:57:08 +0000 | [diff] [blame] | 278 | |
Benny Prijono | 70c6891 | 2006-05-19 15:58:13 +0000 | [diff] [blame] | 279 | /* Default all other flag bits disabled. */ |
Benny Prijono | a4bf021 | 2006-02-10 15:57:08 +0000 | [diff] [blame] | 280 | |
| 281 | return PJ_SUCCESS; |
| 282 | } |
| 283 | |
| 284 | /* |
| 285 | * Enum codecs supported by this factory (i.e. only GSM!). |
| 286 | */ |
| 287 | static pj_status_t gsm_enum_codecs(pjmedia_codec_factory *factory, |
| 288 | unsigned *count, |
| 289 | pjmedia_codec_info codecs[]) |
| 290 | { |
| 291 | PJ_UNUSED_ARG(factory); |
| 292 | PJ_ASSERT_RETURN(codecs && *count > 0, PJ_EINVAL); |
| 293 | |
Benny Prijono | ac623b3 | 2006-07-03 15:19:31 +0000 | [diff] [blame] | 294 | pj_bzero(&codecs[0], sizeof(pjmedia_codec_info)); |
Benny Prijono | a4bf021 | 2006-02-10 15:57:08 +0000 | [diff] [blame] | 295 | codecs[0].encoding_name = pj_str("GSM"); |
| 296 | codecs[0].pt = PJMEDIA_RTP_PT_GSM; |
| 297 | codecs[0].type = PJMEDIA_TYPE_AUDIO; |
Benny Prijono | a837c30 | 2006-04-27 22:36:40 +0000 | [diff] [blame] | 298 | codecs[0].clock_rate = 8000; |
| 299 | codecs[0].channel_cnt = 1; |
Benny Prijono | a4bf021 | 2006-02-10 15:57:08 +0000 | [diff] [blame] | 300 | |
| 301 | *count = 1; |
| 302 | |
| 303 | return PJ_SUCCESS; |
| 304 | } |
| 305 | |
| 306 | /* |
| 307 | * Allocate a new GSM codec instance. |
| 308 | */ |
| 309 | static pj_status_t gsm_alloc_codec( pjmedia_codec_factory *factory, |
| 310 | const pjmedia_codec_info *id, |
| 311 | pjmedia_codec **p_codec) |
| 312 | { |
| 313 | pjmedia_codec *codec; |
Benny Prijono | f93895c | 2006-03-05 11:50:53 +0000 | [diff] [blame] | 314 | struct gsm_data *gsm_data; |
Benny Prijono | 70c6891 | 2006-05-19 15:58:13 +0000 | [diff] [blame] | 315 | pj_status_t status; |
Benny Prijono | a4bf021 | 2006-02-10 15:57:08 +0000 | [diff] [blame] | 316 | |
| 317 | PJ_ASSERT_RETURN(factory && id && p_codec, PJ_EINVAL); |
| 318 | PJ_ASSERT_RETURN(factory == &gsm_codec_factory.base, PJ_EINVAL); |
| 319 | |
| 320 | |
| 321 | pj_mutex_lock(gsm_codec_factory.mutex); |
| 322 | |
| 323 | /* Get free nodes, if any. */ |
| 324 | if (!pj_list_empty(&gsm_codec_factory.codec_list)) { |
| 325 | codec = gsm_codec_factory.codec_list.next; |
| 326 | pj_list_erase(codec); |
| 327 | } else { |
Benny Prijono | a1e6968 | 2007-05-11 15:14:34 +0000 | [diff] [blame] | 328 | codec = PJ_POOL_ZALLOC_T(gsm_codec_factory.pool, pjmedia_codec); |
Benny Prijono | a4bf021 | 2006-02-10 15:57:08 +0000 | [diff] [blame] | 329 | PJ_ASSERT_RETURN(codec != NULL, PJ_ENOMEM); |
Benny Prijono | f80b1bf | 2006-02-19 02:24:27 +0000 | [diff] [blame] | 330 | codec->op = &gsm_op; |
| 331 | codec->factory = factory; |
Benny Prijono | f93895c | 2006-03-05 11:50:53 +0000 | [diff] [blame] | 332 | |
Benny Prijono | a1e6968 | 2007-05-11 15:14:34 +0000 | [diff] [blame] | 333 | gsm_data = PJ_POOL_ZALLOC_T(gsm_codec_factory.pool, struct gsm_data); |
Benny Prijono | f93895c | 2006-03-05 11:50:53 +0000 | [diff] [blame] | 334 | codec->codec_data = gsm_data; |
Benny Prijono | 70c6891 | 2006-05-19 15:58:13 +0000 | [diff] [blame] | 335 | |
Benny Prijono | c95a0f0 | 2007-04-09 07:06:08 +0000 | [diff] [blame] | 336 | #if !PLC_DISABLED |
Benny Prijono | 70c6891 | 2006-05-19 15:58:13 +0000 | [diff] [blame] | 337 | /* Create PLC */ |
| 338 | status = pjmedia_plc_create(gsm_codec_factory.pool, 8000, |
| 339 | 160, 0, &gsm_data->plc); |
| 340 | if (status != PJ_SUCCESS) { |
| 341 | pj_mutex_unlock(gsm_codec_factory.mutex); |
| 342 | return status; |
| 343 | } |
Benny Prijono | c95a0f0 | 2007-04-09 07:06:08 +0000 | [diff] [blame] | 344 | #endif |
Benny Prijono | 70c6891 | 2006-05-19 15:58:13 +0000 | [diff] [blame] | 345 | |
| 346 | /* Create silence detector */ |
| 347 | status = pjmedia_silence_det_create(gsm_codec_factory.pool, |
| 348 | 8000, 160, |
| 349 | &gsm_data->vad); |
| 350 | if (status != PJ_SUCCESS) { |
| 351 | pj_mutex_unlock(gsm_codec_factory.mutex); |
| 352 | return status; |
| 353 | } |
Benny Prijono | a4bf021 | 2006-02-10 15:57:08 +0000 | [diff] [blame] | 354 | } |
| 355 | |
| 356 | pj_mutex_unlock(gsm_codec_factory.mutex); |
| 357 | |
Benny Prijono | a4bf021 | 2006-02-10 15:57:08 +0000 | [diff] [blame] | 358 | *p_codec = codec; |
| 359 | return PJ_SUCCESS; |
| 360 | } |
| 361 | |
| 362 | /* |
| 363 | * Free codec. |
| 364 | */ |
| 365 | static pj_status_t gsm_dealloc_codec( pjmedia_codec_factory *factory, |
| 366 | pjmedia_codec *codec ) |
| 367 | { |
Benny Prijono | f93895c | 2006-03-05 11:50:53 +0000 | [diff] [blame] | 368 | struct gsm_data *gsm_data; |
Benny Prijono | 87445bc | 2006-07-26 11:23:07 +0000 | [diff] [blame] | 369 | int i; |
Benny Prijono | f93895c | 2006-03-05 11:50:53 +0000 | [diff] [blame] | 370 | |
Benny Prijono | a4bf021 | 2006-02-10 15:57:08 +0000 | [diff] [blame] | 371 | PJ_ASSERT_RETURN(factory && codec, PJ_EINVAL); |
| 372 | PJ_ASSERT_RETURN(factory == &gsm_codec_factory.base, PJ_EINVAL); |
| 373 | |
Benny Prijono | a1e6968 | 2007-05-11 15:14:34 +0000 | [diff] [blame] | 374 | gsm_data = (struct gsm_data*) codec->codec_data; |
Benny Prijono | f93895c | 2006-03-05 11:50:53 +0000 | [diff] [blame] | 375 | |
Benny Prijono | a4bf021 | 2006-02-10 15:57:08 +0000 | [diff] [blame] | 376 | /* Close codec, if it's not closed. */ |
Benny Prijono | f93895c | 2006-03-05 11:50:53 +0000 | [diff] [blame] | 377 | gsm_codec_close(codec); |
Benny Prijono | a4bf021 | 2006-02-10 15:57:08 +0000 | [diff] [blame] | 378 | |
Benny Prijono | c95a0f0 | 2007-04-09 07:06:08 +0000 | [diff] [blame] | 379 | #if !PLC_DISABLED |
Benny Prijono | 87445bc | 2006-07-26 11:23:07 +0000 | [diff] [blame] | 380 | /* Clear left samples in the PLC, since codec+plc will be reused |
| 381 | * next time. |
| 382 | */ |
| 383 | for (i=0; i<2; ++i) { |
Benny Prijono | c95a0f0 | 2007-04-09 07:06:08 +0000 | [diff] [blame] | 384 | pj_int16_t frame[160]; |
Benny Prijono | 87445bc | 2006-07-26 11:23:07 +0000 | [diff] [blame] | 385 | pjmedia_zero_samples(frame, PJ_ARRAY_SIZE(frame)); |
| 386 | pjmedia_plc_save(gsm_data->plc, frame); |
| 387 | } |
Benny Prijono | c95a0f0 | 2007-04-09 07:06:08 +0000 | [diff] [blame] | 388 | #else |
| 389 | PJ_UNUSED_ARG(i); |
| 390 | #endif |
Benny Prijono | 87445bc | 2006-07-26 11:23:07 +0000 | [diff] [blame] | 391 | |
Benny Prijono | c6c0ed0 | 2007-01-20 05:18:14 +0000 | [diff] [blame] | 392 | /* Re-init silence_period */ |
| 393 | pj_set_timestamp32(&gsm_data->last_tx, 0, 0); |
| 394 | |
Benny Prijono | a4bf021 | 2006-02-10 15:57:08 +0000 | [diff] [blame] | 395 | /* Put in the free list. */ |
| 396 | pj_mutex_lock(gsm_codec_factory.mutex); |
| 397 | pj_list_push_front(&gsm_codec_factory.codec_list, codec); |
| 398 | pj_mutex_unlock(gsm_codec_factory.mutex); |
| 399 | |
| 400 | return PJ_SUCCESS; |
| 401 | } |
| 402 | |
| 403 | /* |
Benny Prijono | a4bf021 | 2006-02-10 15:57:08 +0000 | [diff] [blame] | 404 | * Init codec. |
| 405 | */ |
| 406 | static pj_status_t gsm_codec_init( pjmedia_codec *codec, |
| 407 | pj_pool_t *pool ) |
| 408 | { |
| 409 | PJ_UNUSED_ARG(codec); |
| 410 | PJ_UNUSED_ARG(pool); |
| 411 | return PJ_SUCCESS; |
| 412 | } |
| 413 | |
| 414 | /* |
| 415 | * Open codec. |
| 416 | */ |
| 417 | static pj_status_t gsm_codec_open( pjmedia_codec *codec, |
Benny Prijono | 6865a3f | 2006-12-30 02:46:57 +0000 | [diff] [blame] | 418 | pjmedia_codec_param *attr ) |
Benny Prijono | a4bf021 | 2006-02-10 15:57:08 +0000 | [diff] [blame] | 419 | { |
Benny Prijono | a1e6968 | 2007-05-11 15:14:34 +0000 | [diff] [blame] | 420 | struct gsm_data *gsm_data = (struct gsm_data*) codec->codec_data; |
Benny Prijono | f93895c | 2006-03-05 11:50:53 +0000 | [diff] [blame] | 421 | |
| 422 | pj_assert(gsm_data != NULL); |
| 423 | pj_assert(gsm_data->encoder == NULL && gsm_data->decoder == NULL); |
Benny Prijono | a4bf021 | 2006-02-10 15:57:08 +0000 | [diff] [blame] | 424 | |
Benny Prijono | f93895c | 2006-03-05 11:50:53 +0000 | [diff] [blame] | 425 | gsm_data->encoder = gsm_create(); |
| 426 | if (!gsm_data->encoder) |
| 427 | return PJMEDIA_CODEC_EFAILED; |
| 428 | |
| 429 | gsm_data->decoder = gsm_create(); |
| 430 | if (!gsm_data->decoder) |
Benny Prijono | a4bf021 | 2006-02-10 15:57:08 +0000 | [diff] [blame] | 431 | return PJMEDIA_CODEC_EFAILED; |
| 432 | |
Benny Prijono | 70c6891 | 2006-05-19 15:58:13 +0000 | [diff] [blame] | 433 | gsm_data->vad_enabled = (attr->setting.vad != 0); |
| 434 | gsm_data->plc_enabled = (attr->setting.plc != 0); |
| 435 | |
Benny Prijono | a4bf021 | 2006-02-10 15:57:08 +0000 | [diff] [blame] | 436 | return PJ_SUCCESS; |
| 437 | } |
| 438 | |
| 439 | /* |
| 440 | * Close codec. |
| 441 | */ |
| 442 | static pj_status_t gsm_codec_close( pjmedia_codec *codec ) |
| 443 | { |
Benny Prijono | a1e6968 | 2007-05-11 15:14:34 +0000 | [diff] [blame] | 444 | struct gsm_data *gsm_data = (struct gsm_data*) codec->codec_data; |
Benny Prijono | a4bf021 | 2006-02-10 15:57:08 +0000 | [diff] [blame] | 445 | |
Benny Prijono | f93895c | 2006-03-05 11:50:53 +0000 | [diff] [blame] | 446 | pj_assert(gsm_data != NULL); |
| 447 | |
| 448 | if (gsm_data->encoder) { |
| 449 | gsm_destroy(gsm_data->encoder); |
| 450 | gsm_data->encoder = NULL; |
| 451 | } |
| 452 | if (gsm_data->decoder) { |
| 453 | gsm_destroy(gsm_data->decoder); |
| 454 | gsm_data->decoder = NULL; |
Benny Prijono | a4bf021 | 2006-02-10 15:57:08 +0000 | [diff] [blame] | 455 | } |
| 456 | |
| 457 | return PJ_SUCCESS; |
| 458 | } |
| 459 | |
| 460 | |
| 461 | /* |
Benny Prijono | b94a6ab | 2006-12-26 21:18:11 +0000 | [diff] [blame] | 462 | * Modify codec settings. |
| 463 | */ |
| 464 | static pj_status_t gsm_codec_modify(pjmedia_codec *codec, |
| 465 | const pjmedia_codec_param *attr ) |
| 466 | { |
Benny Prijono | a1e6968 | 2007-05-11 15:14:34 +0000 | [diff] [blame] | 467 | struct gsm_data *gsm_data = (struct gsm_data*) codec->codec_data; |
Benny Prijono | b94a6ab | 2006-12-26 21:18:11 +0000 | [diff] [blame] | 468 | |
| 469 | pj_assert(gsm_data != NULL); |
Benny Prijono | 6865a3f | 2006-12-30 02:46:57 +0000 | [diff] [blame] | 470 | pj_assert(gsm_data->encoder != NULL && gsm_data->decoder != NULL); |
Benny Prijono | b94a6ab | 2006-12-26 21:18:11 +0000 | [diff] [blame] | 471 | |
| 472 | gsm_data->vad_enabled = (attr->setting.vad != 0); |
| 473 | gsm_data->plc_enabled = (attr->setting.plc != 0); |
| 474 | |
| 475 | return PJ_SUCCESS; |
| 476 | } |
| 477 | |
| 478 | |
| 479 | /* |
Benny Prijono | a4bf021 | 2006-02-10 15:57:08 +0000 | [diff] [blame] | 480 | * Get frames in the packet. |
| 481 | */ |
Benny Prijono | 8befd9f | 2006-05-13 22:46:23 +0000 | [diff] [blame] | 482 | static pj_status_t gsm_codec_parse( pjmedia_codec *codec, |
| 483 | void *pkt, |
| 484 | pj_size_t pkt_size, |
| 485 | const pj_timestamp *ts, |
| 486 | unsigned *frame_cnt, |
| 487 | pjmedia_frame frames[]) |
Benny Prijono | a4bf021 | 2006-02-10 15:57:08 +0000 | [diff] [blame] | 488 | { |
| 489 | unsigned count = 0; |
| 490 | |
| 491 | PJ_UNUSED_ARG(codec); |
| 492 | |
| 493 | PJ_ASSERT_RETURN(frame_cnt, PJ_EINVAL); |
| 494 | |
| 495 | while (pkt_size >= 33 && count < *frame_cnt) { |
Benny Prijono | 8befd9f | 2006-05-13 22:46:23 +0000 | [diff] [blame] | 496 | frames[count].type = PJMEDIA_FRAME_TYPE_AUDIO; |
| 497 | frames[count].buf = pkt; |
| 498 | frames[count].size = 33; |
| 499 | frames[count].timestamp.u64 = ts->u64 + count * 160; |
Benny Prijono | a4bf021 | 2006-02-10 15:57:08 +0000 | [diff] [blame] | 500 | |
| 501 | pkt = ((char*)pkt) + 33; |
| 502 | pkt_size -= 33; |
| 503 | |
| 504 | ++count; |
| 505 | } |
| 506 | |
| 507 | *frame_cnt = count; |
| 508 | return PJ_SUCCESS; |
| 509 | } |
| 510 | |
| 511 | /* |
| 512 | * Encode frame. |
| 513 | */ |
| 514 | static pj_status_t gsm_codec_encode( pjmedia_codec *codec, |
| 515 | const struct pjmedia_frame *input, |
| 516 | unsigned output_buf_len, |
| 517 | struct pjmedia_frame *output) |
| 518 | { |
Benny Prijono | a1e6968 | 2007-05-11 15:14:34 +0000 | [diff] [blame] | 519 | struct gsm_data *gsm_data = (struct gsm_data*) codec->codec_data; |
Nanang Izzuddin | 3aef5e1 | 2008-06-05 10:50:40 +0000 | [diff] [blame] | 520 | pj_int16_t *pcm_in; |
| 521 | unsigned in_size; |
Benny Prijono | f93895c | 2006-03-05 11:50:53 +0000 | [diff] [blame] | 522 | |
Nanang Izzuddin | 3aef5e1 | 2008-06-05 10:50:40 +0000 | [diff] [blame] | 523 | pj_assert(gsm_data && input && output); |
| 524 | |
| 525 | pcm_in = (pj_int16_t*)input->buf; |
| 526 | in_size = input->size; |
Benny Prijono | a4bf021 | 2006-02-10 15:57:08 +0000 | [diff] [blame] | 527 | |
Nanang Izzuddin | 3aef5e1 | 2008-06-05 10:50:40 +0000 | [diff] [blame] | 528 | PJ_ASSERT_RETURN(in_size % 320 == 0, PJMEDIA_CODEC_EPCMFRMINLEN); |
| 529 | PJ_ASSERT_RETURN(output_buf_len >= 33 * in_size/320, |
| 530 | PJMEDIA_CODEC_EFRMTOOSHORT); |
Benny Prijono | a4bf021 | 2006-02-10 15:57:08 +0000 | [diff] [blame] | 531 | |
Benny Prijono | 70c6891 | 2006-05-19 15:58:13 +0000 | [diff] [blame] | 532 | /* Detect silence */ |
| 533 | if (gsm_data->vad_enabled) { |
| 534 | pj_bool_t is_silence; |
Benny Prijono | c6c0ed0 | 2007-01-20 05:18:14 +0000 | [diff] [blame] | 535 | pj_int32_t silence_duration; |
| 536 | |
| 537 | silence_duration = pj_timestamp_diff32(&gsm_data->last_tx, |
| 538 | &input->timestamp); |
Benny Prijono | 70c6891 | 2006-05-19 15:58:13 +0000 | [diff] [blame] | 539 | |
| 540 | is_silence = pjmedia_silence_det_detect(gsm_data->vad, |
Benny Prijono | a1e6968 | 2007-05-11 15:14:34 +0000 | [diff] [blame] | 541 | (const pj_int16_t*) input->buf, |
Benny Prijono | c6c0ed0 | 2007-01-20 05:18:14 +0000 | [diff] [blame] | 542 | (input->size >> 1), |
Benny Prijono | 70c6891 | 2006-05-19 15:58:13 +0000 | [diff] [blame] | 543 | NULL); |
Benny Prijono | c6c0ed0 | 2007-01-20 05:18:14 +0000 | [diff] [blame] | 544 | if (is_silence && |
| 545 | PJMEDIA_CODEC_MAX_SILENCE_PERIOD != -1 && |
Benny Prijono | dd3d002 | 2008-06-14 16:52:04 +0000 | [diff] [blame] | 546 | silence_duration < PJMEDIA_CODEC_MAX_SILENCE_PERIOD*8000/1000) |
Benny Prijono | c6c0ed0 | 2007-01-20 05:18:14 +0000 | [diff] [blame] | 547 | { |
Benny Prijono | 70c6891 | 2006-05-19 15:58:13 +0000 | [diff] [blame] | 548 | output->type = PJMEDIA_FRAME_TYPE_NONE; |
| 549 | output->buf = NULL; |
| 550 | output->size = 0; |
Benny Prijono | c6c0ed0 | 2007-01-20 05:18:14 +0000 | [diff] [blame] | 551 | output->timestamp = input->timestamp; |
Benny Prijono | 70c6891 | 2006-05-19 15:58:13 +0000 | [diff] [blame] | 552 | return PJ_SUCCESS; |
Benny Prijono | c6c0ed0 | 2007-01-20 05:18:14 +0000 | [diff] [blame] | 553 | } else { |
| 554 | gsm_data->last_tx = input->timestamp; |
Benny Prijono | 70c6891 | 2006-05-19 15:58:13 +0000 | [diff] [blame] | 555 | } |
| 556 | } |
| 557 | |
| 558 | /* Encode */ |
Nanang Izzuddin | 3aef5e1 | 2008-06-05 10:50:40 +0000 | [diff] [blame] | 559 | output->size = 0; |
| 560 | while (in_size >= 320) { |
| 561 | gsm_encode(gsm_data->encoder, pcm_in, |
| 562 | (unsigned char*)output->buf + output->size); |
| 563 | pcm_in += 160; |
| 564 | output->size += 33; |
| 565 | in_size -= 320; |
| 566 | } |
Benny Prijono | a4bf021 | 2006-02-10 15:57:08 +0000 | [diff] [blame] | 567 | |
Benny Prijono | a4bf021 | 2006-02-10 15:57:08 +0000 | [diff] [blame] | 568 | output->type = PJMEDIA_FRAME_TYPE_AUDIO; |
| 569 | |
| 570 | return PJ_SUCCESS; |
| 571 | } |
| 572 | |
| 573 | /* |
| 574 | * Decode frame. |
| 575 | */ |
| 576 | static pj_status_t gsm_codec_decode( pjmedia_codec *codec, |
| 577 | const struct pjmedia_frame *input, |
| 578 | unsigned output_buf_len, |
| 579 | struct pjmedia_frame *output) |
| 580 | { |
Benny Prijono | a1e6968 | 2007-05-11 15:14:34 +0000 | [diff] [blame] | 581 | struct gsm_data *gsm_data = (struct gsm_data*) codec->codec_data; |
Benny Prijono | f93895c | 2006-03-05 11:50:53 +0000 | [diff] [blame] | 582 | |
| 583 | pj_assert(gsm_data != NULL); |
| 584 | PJ_ASSERT_RETURN(input && output, PJ_EINVAL); |
Benny Prijono | a4bf021 | 2006-02-10 15:57:08 +0000 | [diff] [blame] | 585 | |
| 586 | if (output_buf_len < 320) |
| 587 | return PJMEDIA_CODEC_EPCMTOOSHORT; |
| 588 | |
| 589 | if (input->size < 33) |
| 590 | return PJMEDIA_CODEC_EFRMTOOSHORT; |
| 591 | |
Benny Prijono | f93895c | 2006-03-05 11:50:53 +0000 | [diff] [blame] | 592 | gsm_decode(gsm_data->decoder, |
Benny Prijono | f80b1bf | 2006-02-19 02:24:27 +0000 | [diff] [blame] | 593 | (unsigned char*)input->buf, |
Benny Prijono | a4bf021 | 2006-02-10 15:57:08 +0000 | [diff] [blame] | 594 | (short*)output->buf); |
| 595 | |
| 596 | output->size = 320; |
| 597 | output->type = PJMEDIA_FRAME_TYPE_AUDIO; |
| 598 | |
Benny Prijono | c95a0f0 | 2007-04-09 07:06:08 +0000 | [diff] [blame] | 599 | #if !PLC_DISABLED |
Benny Prijono | 70c6891 | 2006-05-19 15:58:13 +0000 | [diff] [blame] | 600 | if (gsm_data->plc_enabled) |
Benny Prijono | 89ac2b4 | 2008-06-13 12:52:56 +0000 | [diff] [blame] | 601 | pjmedia_plc_save( gsm_data->plc, (pj_int16_t*)output->buf); |
Benny Prijono | c95a0f0 | 2007-04-09 07:06:08 +0000 | [diff] [blame] | 602 | #endif |
Benny Prijono | 70c6891 | 2006-05-19 15:58:13 +0000 | [diff] [blame] | 603 | |
| 604 | return PJ_SUCCESS; |
| 605 | } |
| 606 | |
| 607 | |
Benny Prijono | c95a0f0 | 2007-04-09 07:06:08 +0000 | [diff] [blame] | 608 | #if !PLC_DISABLED |
Benny Prijono | 70c6891 | 2006-05-19 15:58:13 +0000 | [diff] [blame] | 609 | /* |
| 610 | * Recover lost frame. |
| 611 | */ |
| 612 | static pj_status_t gsm_codec_recover(pjmedia_codec *codec, |
| 613 | unsigned output_buf_len, |
| 614 | struct pjmedia_frame *output) |
| 615 | { |
Benny Prijono | 89ac2b4 | 2008-06-13 12:52:56 +0000 | [diff] [blame] | 616 | struct gsm_data *gsm_data = (struct gsm_data*) codec->codec_data; |
Benny Prijono | 70c6891 | 2006-05-19 15:58:13 +0000 | [diff] [blame] | 617 | |
| 618 | PJ_ASSERT_RETURN(gsm_data->plc_enabled, PJ_EINVALIDOP); |
| 619 | |
| 620 | PJ_ASSERT_RETURN(output_buf_len >= 320, PJMEDIA_CODEC_EPCMTOOSHORT); |
| 621 | |
Benny Prijono | 89ac2b4 | 2008-06-13 12:52:56 +0000 | [diff] [blame] | 622 | pjmedia_plc_generate(gsm_data->plc, (pj_int16_t*)output->buf); |
Benny Prijono | 70c6891 | 2006-05-19 15:58:13 +0000 | [diff] [blame] | 623 | output->size = 320; |
| 624 | |
Benny Prijono | a4bf021 | 2006-02-10 15:57:08 +0000 | [diff] [blame] | 625 | return PJ_SUCCESS; |
| 626 | } |
Benny Prijono | c95a0f0 | 2007-04-09 07:06:08 +0000 | [diff] [blame] | 627 | #endif |
Benny Prijono | 4381efe | 2006-03-16 14:24:26 +0000 | [diff] [blame] | 628 | |
| 629 | |
| 630 | #endif /* PJMEDIA_HAS_GSM_CODEC */ |
| 631 | |