Benny Prijono | a4bf021 | 2006-02-10 15:57:08 +0000 | [diff] [blame] | 1 | /* $Id$ */ |
| 2 | /* |
Benny Prijono | a771a51 | 2007-02-19 01:13:53 +0000 | [diff] [blame] | 3 | * Copyright (C)2003-2007 Benny Prijono <benny@prijono.org> |
Benny Prijono | a4bf021 | 2006-02-10 15:57:08 +0000 | [diff] [blame] | 4 | * |
| 5 | * This program is free software; you can redistribute it and/or modify |
| 6 | * it under the terms of the GNU General Public License as published by |
| 7 | * the Free Software Foundation; either version 2 of the License, or |
| 8 | * (at your option) any later version. |
| 9 | * |
| 10 | * This program is distributed in the hope that it will be useful, |
| 11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 13 | * GNU General Public License for more details. |
| 14 | * |
| 15 | * You should have received a copy of the GNU General Public License |
| 16 | * along with this program; if not, write to the Free Software |
| 17 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| 18 | */ |
| 19 | #include <pjmedia-codec/gsm.h> |
| 20 | #include <pjmedia/codec.h> |
| 21 | #include <pjmedia/errno.h> |
| 22 | #include <pjmedia/endpoint.h> |
Benny Prijono | 70c6891 | 2006-05-19 15:58:13 +0000 | [diff] [blame] | 23 | #include <pjmedia/plc.h> |
Benny Prijono | f04ffdd | 2006-02-21 00:11:18 +0000 | [diff] [blame] | 24 | #include <pjmedia/port.h> |
Benny Prijono | 70c6891 | 2006-05-19 15:58:13 +0000 | [diff] [blame] | 25 | #include <pjmedia/silencedet.h> |
Benny Prijono | a4bf021 | 2006-02-10 15:57:08 +0000 | [diff] [blame] | 26 | #include <pj/assert.h> |
| 27 | #include <pj/pool.h> |
| 28 | #include <pj/string.h> |
| 29 | #include <pj/os.h> |
Benny Prijono | 7f1c90f | 2007-04-07 12:29:46 +0000 | [diff] [blame] | 30 | #include "../../third_party/gsm/inc/gsm.h" |
Benny Prijono | a4bf021 | 2006-02-10 15:57:08 +0000 | [diff] [blame] | 31 | |
Benny Prijono | 4381efe | 2006-03-16 14:24:26 +0000 | [diff] [blame] | 32 | /* |
| 33 | * Only build this file if PJMEDIA_HAS_GSM_CODEC != 0 |
| 34 | */ |
| 35 | #if defined(PJMEDIA_HAS_GSM_CODEC) && PJMEDIA_HAS_GSM_CODEC != 0 |
| 36 | |
Benny Prijono | 00d15a5 | 2008-03-04 16:23:42 +0000 | [diff] [blame] | 37 | /* We removed PLC in 0.6 (and re-enabled it again in 0.9!) */ |
| 38 | #define PLC_DISABLED 0 |
Benny Prijono | c95a0f0 | 2007-04-09 07:06:08 +0000 | [diff] [blame] | 39 | |
Benny Prijono | 4381efe | 2006-03-16 14:24:26 +0000 | [diff] [blame] | 40 | |
Benny Prijono | a4bf021 | 2006-02-10 15:57:08 +0000 | [diff] [blame] | 41 | /* Prototypes for GSM factory */ |
| 42 | static pj_status_t gsm_test_alloc( pjmedia_codec_factory *factory, |
| 43 | const pjmedia_codec_info *id ); |
| 44 | static pj_status_t gsm_default_attr( pjmedia_codec_factory *factory, |
| 45 | const pjmedia_codec_info *id, |
| 46 | pjmedia_codec_param *attr ); |
| 47 | static pj_status_t gsm_enum_codecs( pjmedia_codec_factory *factory, |
| 48 | unsigned *count, |
| 49 | pjmedia_codec_info codecs[]); |
| 50 | static pj_status_t gsm_alloc_codec( pjmedia_codec_factory *factory, |
| 51 | const pjmedia_codec_info *id, |
| 52 | pjmedia_codec **p_codec); |
| 53 | static pj_status_t gsm_dealloc_codec( pjmedia_codec_factory *factory, |
| 54 | pjmedia_codec *codec ); |
| 55 | |
| 56 | /* Prototypes for GSM implementation. */ |
Benny Prijono | a4bf021 | 2006-02-10 15:57:08 +0000 | [diff] [blame] | 57 | static pj_status_t gsm_codec_init( pjmedia_codec *codec, |
| 58 | pj_pool_t *pool ); |
| 59 | static pj_status_t gsm_codec_open( pjmedia_codec *codec, |
Benny Prijono | 6865a3f | 2006-12-30 02:46:57 +0000 | [diff] [blame] | 60 | pjmedia_codec_param *attr ); |
Benny Prijono | a4bf021 | 2006-02-10 15:57:08 +0000 | [diff] [blame] | 61 | static pj_status_t gsm_codec_close( pjmedia_codec *codec ); |
Benny Prijono | b94a6ab | 2006-12-26 21:18:11 +0000 | [diff] [blame] | 62 | static pj_status_t gsm_codec_modify(pjmedia_codec *codec, |
| 63 | const pjmedia_codec_param *attr ); |
Benny Prijono | 8befd9f | 2006-05-13 22:46:23 +0000 | [diff] [blame] | 64 | static pj_status_t gsm_codec_parse( pjmedia_codec *codec, |
| 65 | void *pkt, |
| 66 | pj_size_t pkt_size, |
| 67 | const pj_timestamp *ts, |
| 68 | unsigned *frame_cnt, |
| 69 | pjmedia_frame frames[]); |
Benny Prijono | a4bf021 | 2006-02-10 15:57:08 +0000 | [diff] [blame] | 70 | static pj_status_t gsm_codec_encode( pjmedia_codec *codec, |
| 71 | const struct pjmedia_frame *input, |
| 72 | unsigned output_buf_len, |
| 73 | struct pjmedia_frame *output); |
| 74 | static pj_status_t gsm_codec_decode( pjmedia_codec *codec, |
| 75 | const struct pjmedia_frame *input, |
| 76 | unsigned output_buf_len, |
| 77 | struct pjmedia_frame *output); |
Benny Prijono | c95a0f0 | 2007-04-09 07:06:08 +0000 | [diff] [blame] | 78 | #if !PLC_DISABLED |
Benny Prijono | 70c6891 | 2006-05-19 15:58:13 +0000 | [diff] [blame] | 79 | static pj_status_t gsm_codec_recover(pjmedia_codec *codec, |
| 80 | unsigned output_buf_len, |
| 81 | struct pjmedia_frame *output); |
Benny Prijono | c95a0f0 | 2007-04-09 07:06:08 +0000 | [diff] [blame] | 82 | #endif |
Benny Prijono | a4bf021 | 2006-02-10 15:57:08 +0000 | [diff] [blame] | 83 | |
| 84 | /* Definition for GSM codec operations. */ |
| 85 | static pjmedia_codec_op gsm_op = |
| 86 | { |
Benny Prijono | a4bf021 | 2006-02-10 15:57:08 +0000 | [diff] [blame] | 87 | &gsm_codec_init, |
| 88 | &gsm_codec_open, |
| 89 | &gsm_codec_close, |
Benny Prijono | b94a6ab | 2006-12-26 21:18:11 +0000 | [diff] [blame] | 90 | &gsm_codec_modify, |
Benny Prijono | 8befd9f | 2006-05-13 22:46:23 +0000 | [diff] [blame] | 91 | &gsm_codec_parse, |
Benny Prijono | a4bf021 | 2006-02-10 15:57:08 +0000 | [diff] [blame] | 92 | &gsm_codec_encode, |
Benny Prijono | 70c6891 | 2006-05-19 15:58:13 +0000 | [diff] [blame] | 93 | &gsm_codec_decode, |
Benny Prijono | c95a0f0 | 2007-04-09 07:06:08 +0000 | [diff] [blame] | 94 | #if !PLC_DISABLED |
Benny Prijono | 70c6891 | 2006-05-19 15:58:13 +0000 | [diff] [blame] | 95 | &gsm_codec_recover |
Benny Prijono | c95a0f0 | 2007-04-09 07:06:08 +0000 | [diff] [blame] | 96 | #else |
| 97 | NULL |
| 98 | #endif |
Benny Prijono | a4bf021 | 2006-02-10 15:57:08 +0000 | [diff] [blame] | 99 | }; |
| 100 | |
| 101 | /* Definition for GSM codec factory operations. */ |
| 102 | static pjmedia_codec_factory_op gsm_factory_op = |
| 103 | { |
| 104 | &gsm_test_alloc, |
| 105 | &gsm_default_attr, |
| 106 | &gsm_enum_codecs, |
| 107 | &gsm_alloc_codec, |
| 108 | &gsm_dealloc_codec |
| 109 | }; |
| 110 | |
| 111 | /* GSM factory */ |
| 112 | static struct gsm_codec_factory |
| 113 | { |
| 114 | pjmedia_codec_factory base; |
| 115 | pjmedia_endpt *endpt; |
| 116 | pj_pool_t *pool; |
| 117 | pj_mutex_t *mutex; |
| 118 | pjmedia_codec codec_list; |
| 119 | } gsm_codec_factory; |
| 120 | |
Benny Prijono | 70c6891 | 2006-05-19 15:58:13 +0000 | [diff] [blame] | 121 | |
Benny Prijono | a4bf021 | 2006-02-10 15:57:08 +0000 | [diff] [blame] | 122 | /* GSM codec private data. */ |
Benny Prijono | f93895c | 2006-03-05 11:50:53 +0000 | [diff] [blame] | 123 | struct gsm_data |
Benny Prijono | a4bf021 | 2006-02-10 15:57:08 +0000 | [diff] [blame] | 124 | { |
Benny Prijono | 8334ea1 | 2007-05-11 18:48:23 +0000 | [diff] [blame] | 125 | struct gsm_state *encoder; |
| 126 | struct gsm_state *decoder; |
Benny Prijono | 70c6891 | 2006-05-19 15:58:13 +0000 | [diff] [blame] | 127 | pj_bool_t plc_enabled; |
Benny Prijono | c95a0f0 | 2007-04-09 07:06:08 +0000 | [diff] [blame] | 128 | #if !PLC_DISABLED |
Benny Prijono | 70c6891 | 2006-05-19 15:58:13 +0000 | [diff] [blame] | 129 | pjmedia_plc *plc; |
Benny Prijono | c95a0f0 | 2007-04-09 07:06:08 +0000 | [diff] [blame] | 130 | #endif |
Benny Prijono | 70c6891 | 2006-05-19 15:58:13 +0000 | [diff] [blame] | 131 | pj_bool_t vad_enabled; |
| 132 | pjmedia_silence_det *vad; |
Benny Prijono | c6c0ed0 | 2007-01-20 05:18:14 +0000 | [diff] [blame] | 133 | pj_timestamp last_tx; |
Benny Prijono | a4bf021 | 2006-02-10 15:57:08 +0000 | [diff] [blame] | 134 | }; |
| 135 | |
| 136 | |
| 137 | |
| 138 | /* |
| 139 | * Initialize and register GSM codec factory to pjmedia endpoint. |
| 140 | */ |
| 141 | PJ_DEF(pj_status_t) pjmedia_codec_gsm_init( pjmedia_endpt *endpt ) |
| 142 | { |
| 143 | pjmedia_codec_mgr *codec_mgr; |
| 144 | pj_status_t status; |
| 145 | |
| 146 | if (gsm_codec_factory.pool != NULL) |
| 147 | return PJ_SUCCESS; |
| 148 | |
| 149 | /* Create GSM codec factory. */ |
| 150 | gsm_codec_factory.base.op = &gsm_factory_op; |
| 151 | gsm_codec_factory.base.factory_data = NULL; |
| 152 | gsm_codec_factory.endpt = endpt; |
| 153 | |
| 154 | gsm_codec_factory.pool = pjmedia_endpt_create_pool(endpt, "gsm", 4000, |
| 155 | 4000); |
| 156 | if (!gsm_codec_factory.pool) |
| 157 | return PJ_ENOMEM; |
| 158 | |
| 159 | pj_list_init(&gsm_codec_factory.codec_list); |
| 160 | |
| 161 | /* Create mutex. */ |
| 162 | status = pj_mutex_create_simple(gsm_codec_factory.pool, "gsm", |
| 163 | &gsm_codec_factory.mutex); |
| 164 | if (status != PJ_SUCCESS) |
| 165 | goto on_error; |
| 166 | |
| 167 | /* Get the codec manager. */ |
| 168 | codec_mgr = pjmedia_endpt_get_codec_mgr(endpt); |
| 169 | if (!codec_mgr) { |
| 170 | status = PJ_EINVALIDOP; |
| 171 | goto on_error; |
| 172 | } |
| 173 | |
| 174 | /* Register codec factory to endpoint. */ |
| 175 | status = pjmedia_codec_mgr_register_factory(codec_mgr, |
| 176 | &gsm_codec_factory.base); |
| 177 | if (status != PJ_SUCCESS) |
| 178 | goto on_error; |
| 179 | |
| 180 | /* Done. */ |
| 181 | return PJ_SUCCESS; |
| 182 | |
| 183 | on_error: |
| 184 | pj_pool_release(gsm_codec_factory.pool); |
| 185 | gsm_codec_factory.pool = NULL; |
| 186 | return status; |
| 187 | } |
| 188 | |
| 189 | |
| 190 | |
| 191 | /* |
| 192 | * Unregister GSM codec factory from pjmedia endpoint and deinitialize |
| 193 | * the GSM codec library. |
| 194 | */ |
| 195 | PJ_DEF(pj_status_t) pjmedia_codec_gsm_deinit(void) |
| 196 | { |
| 197 | pjmedia_codec_mgr *codec_mgr; |
| 198 | pj_status_t status; |
| 199 | |
| 200 | if (gsm_codec_factory.pool == NULL) |
| 201 | return PJ_SUCCESS; |
| 202 | |
| 203 | /* We don't want to deinit if there's outstanding codec. */ |
Benny Prijono | d7036a1 | 2007-03-15 10:12:57 +0000 | [diff] [blame] | 204 | /* This is silly, as we'll always have codec in the list if |
| 205 | we ever allocate a codec! A better behavior maybe is to |
| 206 | deallocate all codecs in the list. |
Benny Prijono | a4bf021 | 2006-02-10 15:57:08 +0000 | [diff] [blame] | 207 | pj_mutex_lock(gsm_codec_factory.mutex); |
| 208 | if (!pj_list_empty(&gsm_codec_factory.codec_list)) { |
| 209 | pj_mutex_unlock(gsm_codec_factory.mutex); |
| 210 | return PJ_EBUSY; |
| 211 | } |
Benny Prijono | d7036a1 | 2007-03-15 10:12:57 +0000 | [diff] [blame] | 212 | */ |
Benny Prijono | a4bf021 | 2006-02-10 15:57:08 +0000 | [diff] [blame] | 213 | |
| 214 | /* Get the codec manager. */ |
| 215 | codec_mgr = pjmedia_endpt_get_codec_mgr(gsm_codec_factory.endpt); |
| 216 | if (!codec_mgr) { |
| 217 | pj_pool_release(gsm_codec_factory.pool); |
| 218 | gsm_codec_factory.pool = NULL; |
| 219 | return PJ_EINVALIDOP; |
| 220 | } |
| 221 | |
| 222 | /* Unregister GSM codec factory. */ |
| 223 | status = pjmedia_codec_mgr_unregister_factory(codec_mgr, |
| 224 | &gsm_codec_factory.base); |
| 225 | |
| 226 | /* Destroy mutex. */ |
| 227 | pj_mutex_destroy(gsm_codec_factory.mutex); |
| 228 | |
| 229 | /* Destroy pool. */ |
| 230 | pj_pool_release(gsm_codec_factory.pool); |
| 231 | gsm_codec_factory.pool = NULL; |
| 232 | |
| 233 | return status; |
| 234 | } |
| 235 | |
| 236 | /* |
| 237 | * Check if factory can allocate the specified codec. |
| 238 | */ |
| 239 | static pj_status_t gsm_test_alloc( pjmedia_codec_factory *factory, |
| 240 | const pjmedia_codec_info *info ) |
| 241 | { |
| 242 | PJ_UNUSED_ARG(factory); |
| 243 | |
| 244 | /* Check payload type. */ |
| 245 | if (info->pt != PJMEDIA_RTP_PT_GSM) |
| 246 | return PJMEDIA_CODEC_EUNSUP; |
| 247 | |
| 248 | /* Ignore the rest, since it's static payload type. */ |
| 249 | |
| 250 | return PJ_SUCCESS; |
| 251 | } |
| 252 | |
| 253 | /* |
| 254 | * Generate default attribute. |
| 255 | */ |
| 256 | static pj_status_t gsm_default_attr (pjmedia_codec_factory *factory, |
| 257 | const pjmedia_codec_info *id, |
| 258 | pjmedia_codec_param *attr ) |
| 259 | { |
| 260 | PJ_UNUSED_ARG(factory); |
| 261 | PJ_UNUSED_ARG(id); |
| 262 | |
Benny Prijono | ac623b3 | 2006-07-03 15:19:31 +0000 | [diff] [blame] | 263 | pj_bzero(attr, sizeof(pjmedia_codec_param)); |
Benny Prijono | 8befd9f | 2006-05-13 22:46:23 +0000 | [diff] [blame] | 264 | attr->info.clock_rate = 8000; |
| 265 | attr->info.channel_cnt = 1; |
| 266 | attr->info.avg_bps = 13200; |
| 267 | attr->info.pcm_bits_per_sample = 16; |
| 268 | attr->info.frm_ptime = 20; |
| 269 | attr->info.pt = PJMEDIA_RTP_PT_GSM; |
| 270 | |
| 271 | attr->setting.frm_per_pkt = 1; |
Benny Prijono | 70c6891 | 2006-05-19 15:58:13 +0000 | [diff] [blame] | 272 | attr->setting.vad = 1; |
Benny Prijono | c95a0f0 | 2007-04-09 07:06:08 +0000 | [diff] [blame] | 273 | #if !PLC_DISABLED |
Benny Prijono | 70c6891 | 2006-05-19 15:58:13 +0000 | [diff] [blame] | 274 | attr->setting.plc = 1; |
Benny Prijono | c95a0f0 | 2007-04-09 07:06:08 +0000 | [diff] [blame] | 275 | #endif |
Benny Prijono | a4bf021 | 2006-02-10 15:57:08 +0000 | [diff] [blame] | 276 | |
Benny Prijono | 70c6891 | 2006-05-19 15:58:13 +0000 | [diff] [blame] | 277 | /* Default all other flag bits disabled. */ |
Benny Prijono | a4bf021 | 2006-02-10 15:57:08 +0000 | [diff] [blame] | 278 | |
| 279 | return PJ_SUCCESS; |
| 280 | } |
| 281 | |
| 282 | /* |
| 283 | * Enum codecs supported by this factory (i.e. only GSM!). |
| 284 | */ |
| 285 | static pj_status_t gsm_enum_codecs(pjmedia_codec_factory *factory, |
| 286 | unsigned *count, |
| 287 | pjmedia_codec_info codecs[]) |
| 288 | { |
| 289 | PJ_UNUSED_ARG(factory); |
| 290 | PJ_ASSERT_RETURN(codecs && *count > 0, PJ_EINVAL); |
| 291 | |
Benny Prijono | ac623b3 | 2006-07-03 15:19:31 +0000 | [diff] [blame] | 292 | pj_bzero(&codecs[0], sizeof(pjmedia_codec_info)); |
Benny Prijono | a4bf021 | 2006-02-10 15:57:08 +0000 | [diff] [blame] | 293 | codecs[0].encoding_name = pj_str("GSM"); |
| 294 | codecs[0].pt = PJMEDIA_RTP_PT_GSM; |
| 295 | codecs[0].type = PJMEDIA_TYPE_AUDIO; |
Benny Prijono | a837c30 | 2006-04-27 22:36:40 +0000 | [diff] [blame] | 296 | codecs[0].clock_rate = 8000; |
| 297 | codecs[0].channel_cnt = 1; |
Benny Prijono | a4bf021 | 2006-02-10 15:57:08 +0000 | [diff] [blame] | 298 | |
| 299 | *count = 1; |
| 300 | |
| 301 | return PJ_SUCCESS; |
| 302 | } |
| 303 | |
| 304 | /* |
| 305 | * Allocate a new GSM codec instance. |
| 306 | */ |
| 307 | static pj_status_t gsm_alloc_codec( pjmedia_codec_factory *factory, |
| 308 | const pjmedia_codec_info *id, |
| 309 | pjmedia_codec **p_codec) |
| 310 | { |
| 311 | pjmedia_codec *codec; |
Benny Prijono | f93895c | 2006-03-05 11:50:53 +0000 | [diff] [blame] | 312 | struct gsm_data *gsm_data; |
Benny Prijono | 70c6891 | 2006-05-19 15:58:13 +0000 | [diff] [blame] | 313 | pj_status_t status; |
Benny Prijono | a4bf021 | 2006-02-10 15:57:08 +0000 | [diff] [blame] | 314 | |
| 315 | PJ_ASSERT_RETURN(factory && id && p_codec, PJ_EINVAL); |
| 316 | PJ_ASSERT_RETURN(factory == &gsm_codec_factory.base, PJ_EINVAL); |
| 317 | |
| 318 | |
| 319 | pj_mutex_lock(gsm_codec_factory.mutex); |
| 320 | |
| 321 | /* Get free nodes, if any. */ |
| 322 | if (!pj_list_empty(&gsm_codec_factory.codec_list)) { |
| 323 | codec = gsm_codec_factory.codec_list.next; |
| 324 | pj_list_erase(codec); |
| 325 | } else { |
Benny Prijono | a1e6968 | 2007-05-11 15:14:34 +0000 | [diff] [blame] | 326 | codec = PJ_POOL_ZALLOC_T(gsm_codec_factory.pool, pjmedia_codec); |
Benny Prijono | a4bf021 | 2006-02-10 15:57:08 +0000 | [diff] [blame] | 327 | PJ_ASSERT_RETURN(codec != NULL, PJ_ENOMEM); |
Benny Prijono | f80b1bf | 2006-02-19 02:24:27 +0000 | [diff] [blame] | 328 | codec->op = &gsm_op; |
| 329 | codec->factory = factory; |
Benny Prijono | f93895c | 2006-03-05 11:50:53 +0000 | [diff] [blame] | 330 | |
Benny Prijono | a1e6968 | 2007-05-11 15:14:34 +0000 | [diff] [blame] | 331 | 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] | 332 | codec->codec_data = gsm_data; |
Benny Prijono | 70c6891 | 2006-05-19 15:58:13 +0000 | [diff] [blame] | 333 | |
Benny Prijono | c95a0f0 | 2007-04-09 07:06:08 +0000 | [diff] [blame] | 334 | #if !PLC_DISABLED |
Benny Prijono | 70c6891 | 2006-05-19 15:58:13 +0000 | [diff] [blame] | 335 | /* Create PLC */ |
| 336 | status = pjmedia_plc_create(gsm_codec_factory.pool, 8000, |
| 337 | 160, 0, &gsm_data->plc); |
| 338 | if (status != PJ_SUCCESS) { |
| 339 | pj_mutex_unlock(gsm_codec_factory.mutex); |
| 340 | return status; |
| 341 | } |
Benny Prijono | c95a0f0 | 2007-04-09 07:06:08 +0000 | [diff] [blame] | 342 | #endif |
Benny Prijono | 70c6891 | 2006-05-19 15:58:13 +0000 | [diff] [blame] | 343 | |
| 344 | /* Create silence detector */ |
| 345 | status = pjmedia_silence_det_create(gsm_codec_factory.pool, |
| 346 | 8000, 160, |
| 347 | &gsm_data->vad); |
| 348 | if (status != PJ_SUCCESS) { |
| 349 | pj_mutex_unlock(gsm_codec_factory.mutex); |
| 350 | return status; |
| 351 | } |
Benny Prijono | a4bf021 | 2006-02-10 15:57:08 +0000 | [diff] [blame] | 352 | } |
| 353 | |
| 354 | pj_mutex_unlock(gsm_codec_factory.mutex); |
| 355 | |
Benny Prijono | a4bf021 | 2006-02-10 15:57:08 +0000 | [diff] [blame] | 356 | *p_codec = codec; |
| 357 | return PJ_SUCCESS; |
| 358 | } |
| 359 | |
| 360 | /* |
| 361 | * Free codec. |
| 362 | */ |
| 363 | static pj_status_t gsm_dealloc_codec( pjmedia_codec_factory *factory, |
| 364 | pjmedia_codec *codec ) |
| 365 | { |
Benny Prijono | f93895c | 2006-03-05 11:50:53 +0000 | [diff] [blame] | 366 | struct gsm_data *gsm_data; |
Benny Prijono | 87445bc | 2006-07-26 11:23:07 +0000 | [diff] [blame] | 367 | int i; |
Benny Prijono | f93895c | 2006-03-05 11:50:53 +0000 | [diff] [blame] | 368 | |
Benny Prijono | a4bf021 | 2006-02-10 15:57:08 +0000 | [diff] [blame] | 369 | PJ_ASSERT_RETURN(factory && codec, PJ_EINVAL); |
| 370 | PJ_ASSERT_RETURN(factory == &gsm_codec_factory.base, PJ_EINVAL); |
| 371 | |
Benny Prijono | a1e6968 | 2007-05-11 15:14:34 +0000 | [diff] [blame] | 372 | gsm_data = (struct gsm_data*) codec->codec_data; |
Benny Prijono | f93895c | 2006-03-05 11:50:53 +0000 | [diff] [blame] | 373 | |
Benny Prijono | a4bf021 | 2006-02-10 15:57:08 +0000 | [diff] [blame] | 374 | /* Close codec, if it's not closed. */ |
Benny Prijono | f93895c | 2006-03-05 11:50:53 +0000 | [diff] [blame] | 375 | gsm_codec_close(codec); |
Benny Prijono | a4bf021 | 2006-02-10 15:57:08 +0000 | [diff] [blame] | 376 | |
Benny Prijono | c95a0f0 | 2007-04-09 07:06:08 +0000 | [diff] [blame] | 377 | #if !PLC_DISABLED |
Benny Prijono | 87445bc | 2006-07-26 11:23:07 +0000 | [diff] [blame] | 378 | /* Clear left samples in the PLC, since codec+plc will be reused |
| 379 | * next time. |
| 380 | */ |
| 381 | for (i=0; i<2; ++i) { |
Benny Prijono | c95a0f0 | 2007-04-09 07:06:08 +0000 | [diff] [blame] | 382 | pj_int16_t frame[160]; |
Benny Prijono | 87445bc | 2006-07-26 11:23:07 +0000 | [diff] [blame] | 383 | pjmedia_zero_samples(frame, PJ_ARRAY_SIZE(frame)); |
| 384 | pjmedia_plc_save(gsm_data->plc, frame); |
| 385 | } |
Benny Prijono | c95a0f0 | 2007-04-09 07:06:08 +0000 | [diff] [blame] | 386 | #else |
| 387 | PJ_UNUSED_ARG(i); |
| 388 | #endif |
Benny Prijono | 87445bc | 2006-07-26 11:23:07 +0000 | [diff] [blame] | 389 | |
Benny Prijono | c6c0ed0 | 2007-01-20 05:18:14 +0000 | [diff] [blame] | 390 | /* Re-init silence_period */ |
| 391 | pj_set_timestamp32(&gsm_data->last_tx, 0, 0); |
| 392 | |
Benny Prijono | a4bf021 | 2006-02-10 15:57:08 +0000 | [diff] [blame] | 393 | /* Put in the free list. */ |
| 394 | pj_mutex_lock(gsm_codec_factory.mutex); |
| 395 | pj_list_push_front(&gsm_codec_factory.codec_list, codec); |
| 396 | pj_mutex_unlock(gsm_codec_factory.mutex); |
| 397 | |
| 398 | return PJ_SUCCESS; |
| 399 | } |
| 400 | |
| 401 | /* |
Benny Prijono | a4bf021 | 2006-02-10 15:57:08 +0000 | [diff] [blame] | 402 | * Init codec. |
| 403 | */ |
| 404 | static pj_status_t gsm_codec_init( pjmedia_codec *codec, |
| 405 | pj_pool_t *pool ) |
| 406 | { |
| 407 | PJ_UNUSED_ARG(codec); |
| 408 | PJ_UNUSED_ARG(pool); |
| 409 | return PJ_SUCCESS; |
| 410 | } |
| 411 | |
| 412 | /* |
| 413 | * Open codec. |
| 414 | */ |
| 415 | static pj_status_t gsm_codec_open( pjmedia_codec *codec, |
Benny Prijono | 6865a3f | 2006-12-30 02:46:57 +0000 | [diff] [blame] | 416 | pjmedia_codec_param *attr ) |
Benny Prijono | a4bf021 | 2006-02-10 15:57:08 +0000 | [diff] [blame] | 417 | { |
Benny Prijono | a1e6968 | 2007-05-11 15:14:34 +0000 | [diff] [blame] | 418 | struct gsm_data *gsm_data = (struct gsm_data*) codec->codec_data; |
Benny Prijono | f93895c | 2006-03-05 11:50:53 +0000 | [diff] [blame] | 419 | |
| 420 | pj_assert(gsm_data != NULL); |
| 421 | pj_assert(gsm_data->encoder == NULL && gsm_data->decoder == NULL); |
Benny Prijono | a4bf021 | 2006-02-10 15:57:08 +0000 | [diff] [blame] | 422 | |
Benny Prijono | f93895c | 2006-03-05 11:50:53 +0000 | [diff] [blame] | 423 | gsm_data->encoder = gsm_create(); |
| 424 | if (!gsm_data->encoder) |
| 425 | return PJMEDIA_CODEC_EFAILED; |
| 426 | |
| 427 | gsm_data->decoder = gsm_create(); |
| 428 | if (!gsm_data->decoder) |
Benny Prijono | a4bf021 | 2006-02-10 15:57:08 +0000 | [diff] [blame] | 429 | return PJMEDIA_CODEC_EFAILED; |
| 430 | |
Benny Prijono | 70c6891 | 2006-05-19 15:58:13 +0000 | [diff] [blame] | 431 | gsm_data->vad_enabled = (attr->setting.vad != 0); |
| 432 | gsm_data->plc_enabled = (attr->setting.plc != 0); |
| 433 | |
Benny Prijono | a4bf021 | 2006-02-10 15:57:08 +0000 | [diff] [blame] | 434 | return PJ_SUCCESS; |
| 435 | } |
| 436 | |
| 437 | /* |
| 438 | * Close codec. |
| 439 | */ |
| 440 | static pj_status_t gsm_codec_close( pjmedia_codec *codec ) |
| 441 | { |
Benny Prijono | a1e6968 | 2007-05-11 15:14:34 +0000 | [diff] [blame] | 442 | struct gsm_data *gsm_data = (struct gsm_data*) codec->codec_data; |
Benny Prijono | a4bf021 | 2006-02-10 15:57:08 +0000 | [diff] [blame] | 443 | |
Benny Prijono | f93895c | 2006-03-05 11:50:53 +0000 | [diff] [blame] | 444 | pj_assert(gsm_data != NULL); |
| 445 | |
| 446 | if (gsm_data->encoder) { |
| 447 | gsm_destroy(gsm_data->encoder); |
| 448 | gsm_data->encoder = NULL; |
| 449 | } |
| 450 | if (gsm_data->decoder) { |
| 451 | gsm_destroy(gsm_data->decoder); |
| 452 | gsm_data->decoder = NULL; |
Benny Prijono | a4bf021 | 2006-02-10 15:57:08 +0000 | [diff] [blame] | 453 | } |
| 454 | |
| 455 | return PJ_SUCCESS; |
| 456 | } |
| 457 | |
| 458 | |
| 459 | /* |
Benny Prijono | b94a6ab | 2006-12-26 21:18:11 +0000 | [diff] [blame] | 460 | * Modify codec settings. |
| 461 | */ |
| 462 | static pj_status_t gsm_codec_modify(pjmedia_codec *codec, |
| 463 | const pjmedia_codec_param *attr ) |
| 464 | { |
Benny Prijono | a1e6968 | 2007-05-11 15:14:34 +0000 | [diff] [blame] | 465 | struct gsm_data *gsm_data = (struct gsm_data*) codec->codec_data; |
Benny Prijono | b94a6ab | 2006-12-26 21:18:11 +0000 | [diff] [blame] | 466 | |
| 467 | pj_assert(gsm_data != NULL); |
Benny Prijono | 6865a3f | 2006-12-30 02:46:57 +0000 | [diff] [blame] | 468 | pj_assert(gsm_data->encoder != NULL && gsm_data->decoder != NULL); |
Benny Prijono | b94a6ab | 2006-12-26 21:18:11 +0000 | [diff] [blame] | 469 | |
| 470 | gsm_data->vad_enabled = (attr->setting.vad != 0); |
| 471 | gsm_data->plc_enabled = (attr->setting.plc != 0); |
| 472 | |
| 473 | return PJ_SUCCESS; |
| 474 | } |
| 475 | |
| 476 | |
| 477 | /* |
Benny Prijono | a4bf021 | 2006-02-10 15:57:08 +0000 | [diff] [blame] | 478 | * Get frames in the packet. |
| 479 | */ |
Benny Prijono | 8befd9f | 2006-05-13 22:46:23 +0000 | [diff] [blame] | 480 | static pj_status_t gsm_codec_parse( pjmedia_codec *codec, |
| 481 | void *pkt, |
| 482 | pj_size_t pkt_size, |
| 483 | const pj_timestamp *ts, |
| 484 | unsigned *frame_cnt, |
| 485 | pjmedia_frame frames[]) |
Benny Prijono | a4bf021 | 2006-02-10 15:57:08 +0000 | [diff] [blame] | 486 | { |
| 487 | unsigned count = 0; |
| 488 | |
| 489 | PJ_UNUSED_ARG(codec); |
| 490 | |
| 491 | PJ_ASSERT_RETURN(frame_cnt, PJ_EINVAL); |
| 492 | |
| 493 | while (pkt_size >= 33 && count < *frame_cnt) { |
Benny Prijono | 8befd9f | 2006-05-13 22:46:23 +0000 | [diff] [blame] | 494 | frames[count].type = PJMEDIA_FRAME_TYPE_AUDIO; |
| 495 | frames[count].buf = pkt; |
| 496 | frames[count].size = 33; |
| 497 | frames[count].timestamp.u64 = ts->u64 + count * 160; |
Benny Prijono | a4bf021 | 2006-02-10 15:57:08 +0000 | [diff] [blame] | 498 | |
| 499 | pkt = ((char*)pkt) + 33; |
| 500 | pkt_size -= 33; |
| 501 | |
| 502 | ++count; |
| 503 | } |
| 504 | |
| 505 | *frame_cnt = count; |
| 506 | return PJ_SUCCESS; |
| 507 | } |
| 508 | |
| 509 | /* |
| 510 | * Encode frame. |
| 511 | */ |
| 512 | static pj_status_t gsm_codec_encode( pjmedia_codec *codec, |
| 513 | const struct pjmedia_frame *input, |
| 514 | unsigned output_buf_len, |
| 515 | struct pjmedia_frame *output) |
| 516 | { |
Benny Prijono | a1e6968 | 2007-05-11 15:14:34 +0000 | [diff] [blame] | 517 | struct gsm_data *gsm_data = (struct gsm_data*) codec->codec_data; |
Nanang Izzuddin | 3aef5e1 | 2008-06-05 10:50:40 +0000 | [diff] [blame] | 518 | pj_int16_t *pcm_in; |
| 519 | unsigned in_size; |
Benny Prijono | f93895c | 2006-03-05 11:50:53 +0000 | [diff] [blame] | 520 | |
Nanang Izzuddin | 3aef5e1 | 2008-06-05 10:50:40 +0000 | [diff] [blame] | 521 | pj_assert(gsm_data && input && output); |
| 522 | |
| 523 | pcm_in = (pj_int16_t*)input->buf; |
| 524 | in_size = input->size; |
Benny Prijono | a4bf021 | 2006-02-10 15:57:08 +0000 | [diff] [blame] | 525 | |
Nanang Izzuddin | 3aef5e1 | 2008-06-05 10:50:40 +0000 | [diff] [blame] | 526 | PJ_ASSERT_RETURN(in_size % 320 == 0, PJMEDIA_CODEC_EPCMFRMINLEN); |
| 527 | PJ_ASSERT_RETURN(output_buf_len >= 33 * in_size/320, |
| 528 | PJMEDIA_CODEC_EFRMTOOSHORT); |
Benny Prijono | a4bf021 | 2006-02-10 15:57:08 +0000 | [diff] [blame] | 529 | |
Benny Prijono | 70c6891 | 2006-05-19 15:58:13 +0000 | [diff] [blame] | 530 | /* Detect silence */ |
| 531 | if (gsm_data->vad_enabled) { |
| 532 | pj_bool_t is_silence; |
Benny Prijono | c6c0ed0 | 2007-01-20 05:18:14 +0000 | [diff] [blame] | 533 | pj_int32_t silence_duration; |
| 534 | |
| 535 | silence_duration = pj_timestamp_diff32(&gsm_data->last_tx, |
| 536 | &input->timestamp); |
Benny Prijono | 70c6891 | 2006-05-19 15:58:13 +0000 | [diff] [blame] | 537 | |
| 538 | is_silence = pjmedia_silence_det_detect(gsm_data->vad, |
Benny Prijono | a1e6968 | 2007-05-11 15:14:34 +0000 | [diff] [blame] | 539 | (const pj_int16_t*) input->buf, |
Benny Prijono | c6c0ed0 | 2007-01-20 05:18:14 +0000 | [diff] [blame] | 540 | (input->size >> 1), |
Benny Prijono | 70c6891 | 2006-05-19 15:58:13 +0000 | [diff] [blame] | 541 | NULL); |
Benny Prijono | c6c0ed0 | 2007-01-20 05:18:14 +0000 | [diff] [blame] | 542 | if (is_silence && |
| 543 | PJMEDIA_CODEC_MAX_SILENCE_PERIOD != -1 && |
| 544 | silence_duration < PJMEDIA_CODEC_MAX_SILENCE_PERIOD) |
| 545 | { |
Benny Prijono | 70c6891 | 2006-05-19 15:58:13 +0000 | [diff] [blame] | 546 | output->type = PJMEDIA_FRAME_TYPE_NONE; |
| 547 | output->buf = NULL; |
| 548 | output->size = 0; |
Benny Prijono | c6c0ed0 | 2007-01-20 05:18:14 +0000 | [diff] [blame] | 549 | output->timestamp = input->timestamp; |
Benny Prijono | 70c6891 | 2006-05-19 15:58:13 +0000 | [diff] [blame] | 550 | return PJ_SUCCESS; |
Benny Prijono | c6c0ed0 | 2007-01-20 05:18:14 +0000 | [diff] [blame] | 551 | } else { |
| 552 | gsm_data->last_tx = input->timestamp; |
Benny Prijono | 70c6891 | 2006-05-19 15:58:13 +0000 | [diff] [blame] | 553 | } |
| 554 | } |
| 555 | |
| 556 | /* Encode */ |
Nanang Izzuddin | 3aef5e1 | 2008-06-05 10:50:40 +0000 | [diff] [blame] | 557 | output->size = 0; |
| 558 | while (in_size >= 320) { |
| 559 | gsm_encode(gsm_data->encoder, pcm_in, |
| 560 | (unsigned char*)output->buf + output->size); |
| 561 | pcm_in += 160; |
| 562 | output->size += 33; |
| 563 | in_size -= 320; |
| 564 | } |
Benny Prijono | a4bf021 | 2006-02-10 15:57:08 +0000 | [diff] [blame] | 565 | |
Benny Prijono | a4bf021 | 2006-02-10 15:57:08 +0000 | [diff] [blame] | 566 | output->type = PJMEDIA_FRAME_TYPE_AUDIO; |
| 567 | |
| 568 | return PJ_SUCCESS; |
| 569 | } |
| 570 | |
| 571 | /* |
| 572 | * Decode frame. |
| 573 | */ |
| 574 | static pj_status_t gsm_codec_decode( pjmedia_codec *codec, |
| 575 | const struct pjmedia_frame *input, |
| 576 | unsigned output_buf_len, |
| 577 | struct pjmedia_frame *output) |
| 578 | { |
Benny Prijono | a1e6968 | 2007-05-11 15:14:34 +0000 | [diff] [blame] | 579 | struct gsm_data *gsm_data = (struct gsm_data*) codec->codec_data; |
Benny Prijono | f93895c | 2006-03-05 11:50:53 +0000 | [diff] [blame] | 580 | |
| 581 | pj_assert(gsm_data != NULL); |
| 582 | PJ_ASSERT_RETURN(input && output, PJ_EINVAL); |
Benny Prijono | a4bf021 | 2006-02-10 15:57:08 +0000 | [diff] [blame] | 583 | |
| 584 | if (output_buf_len < 320) |
| 585 | return PJMEDIA_CODEC_EPCMTOOSHORT; |
| 586 | |
| 587 | if (input->size < 33) |
| 588 | return PJMEDIA_CODEC_EFRMTOOSHORT; |
| 589 | |
Benny Prijono | f93895c | 2006-03-05 11:50:53 +0000 | [diff] [blame] | 590 | gsm_decode(gsm_data->decoder, |
Benny Prijono | f80b1bf | 2006-02-19 02:24:27 +0000 | [diff] [blame] | 591 | (unsigned char*)input->buf, |
Benny Prijono | a4bf021 | 2006-02-10 15:57:08 +0000 | [diff] [blame] | 592 | (short*)output->buf); |
| 593 | |
| 594 | output->size = 320; |
| 595 | output->type = PJMEDIA_FRAME_TYPE_AUDIO; |
| 596 | |
Benny Prijono | c95a0f0 | 2007-04-09 07:06:08 +0000 | [diff] [blame] | 597 | #if !PLC_DISABLED |
Benny Prijono | 70c6891 | 2006-05-19 15:58:13 +0000 | [diff] [blame] | 598 | if (gsm_data->plc_enabled) |
| 599 | pjmedia_plc_save( gsm_data->plc, output->buf); |
Benny Prijono | c95a0f0 | 2007-04-09 07:06:08 +0000 | [diff] [blame] | 600 | #endif |
Benny Prijono | 70c6891 | 2006-05-19 15:58:13 +0000 | [diff] [blame] | 601 | |
| 602 | return PJ_SUCCESS; |
| 603 | } |
| 604 | |
| 605 | |
Benny Prijono | c95a0f0 | 2007-04-09 07:06:08 +0000 | [diff] [blame] | 606 | #if !PLC_DISABLED |
Benny Prijono | 70c6891 | 2006-05-19 15:58:13 +0000 | [diff] [blame] | 607 | /* |
| 608 | * Recover lost frame. |
| 609 | */ |
| 610 | static pj_status_t gsm_codec_recover(pjmedia_codec *codec, |
| 611 | unsigned output_buf_len, |
| 612 | struct pjmedia_frame *output) |
| 613 | { |
| 614 | struct gsm_data *gsm_data = codec->codec_data; |
| 615 | |
| 616 | PJ_ASSERT_RETURN(gsm_data->plc_enabled, PJ_EINVALIDOP); |
| 617 | |
| 618 | PJ_ASSERT_RETURN(output_buf_len >= 320, PJMEDIA_CODEC_EPCMTOOSHORT); |
| 619 | |
| 620 | pjmedia_plc_generate(gsm_data->plc, output->buf); |
| 621 | output->size = 320; |
| 622 | |
Benny Prijono | a4bf021 | 2006-02-10 15:57:08 +0000 | [diff] [blame] | 623 | return PJ_SUCCESS; |
| 624 | } |
Benny Prijono | c95a0f0 | 2007-04-09 07:06:08 +0000 | [diff] [blame] | 625 | #endif |
Benny Prijono | 4381efe | 2006-03-16 14:24:26 +0000 | [diff] [blame] | 626 | |
| 627 | |
| 628 | #endif /* PJMEDIA_HAS_GSM_CODEC */ |
| 629 | |