Benny Prijono | c585988 | 2006-07-31 15:25:14 +0000 | [diff] [blame] | 1 | /* $Id$ */ |
| 2 | /* |
Benny Prijono | 32177c0 | 2008-06-20 22:44:47 +0000 | [diff] [blame] | 3 | * Copyright (C)2003-2008 Benny Prijono <benny@prijono.org> |
Benny Prijono | c585988 | 2006-07-31 15:25:14 +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/ilbc.h> |
| 20 | #include <pjmedia-codec/types.h> |
| 21 | #include <pjmedia/codec.h> |
| 22 | #include <pjmedia/errno.h> |
| 23 | #include <pjmedia/endpoint.h> |
| 24 | #include <pjmedia/plc.h> |
| 25 | #include <pjmedia/port.h> |
| 26 | #include <pjmedia/silencedet.h> |
| 27 | #include <pj/assert.h> |
| 28 | #include <pj/log.h> |
| 29 | #include <pj/pool.h> |
| 30 | #include <pj/string.h> |
| 31 | #include <pj/os.h> |
Benny Prijono | f830c1b | 2007-04-07 12:47:34 +0000 | [diff] [blame] | 32 | #include "../../third_party/ilbc/iLBC_encode.h" |
| 33 | #include "../../third_party/ilbc/iLBC_decode.h" |
Benny Prijono | c585988 | 2006-07-31 15:25:14 +0000 | [diff] [blame] | 34 | |
| 35 | |
| 36 | /* |
| 37 | * Only build this file if PJMEDIA_HAS_ILBC_CODEC != 0 |
| 38 | */ |
| 39 | #if defined(PJMEDIA_HAS_ILBC_CODEC) && PJMEDIA_HAS_ILBC_CODEC != 0 |
| 40 | |
| 41 | |
| 42 | #define THIS_FILE "ilbc.c" |
| 43 | #define CLOCK_RATE 8000 |
| 44 | #define DEFAULT_MODE 30 |
| 45 | |
| 46 | |
| 47 | /* Prototypes for iLBC factory */ |
| 48 | static pj_status_t ilbc_test_alloc(pjmedia_codec_factory *factory, |
| 49 | const pjmedia_codec_info *id ); |
| 50 | static pj_status_t ilbc_default_attr(pjmedia_codec_factory *factory, |
| 51 | const pjmedia_codec_info *id, |
| 52 | pjmedia_codec_param *attr ); |
| 53 | static pj_status_t ilbc_enum_codecs(pjmedia_codec_factory *factory, |
| 54 | unsigned *count, |
| 55 | pjmedia_codec_info codecs[]); |
| 56 | static pj_status_t ilbc_alloc_codec(pjmedia_codec_factory *factory, |
| 57 | const pjmedia_codec_info *id, |
| 58 | pjmedia_codec **p_codec); |
| 59 | static pj_status_t ilbc_dealloc_codec(pjmedia_codec_factory *factory, |
| 60 | pjmedia_codec *codec ); |
| 61 | |
| 62 | /* Prototypes for iLBC implementation. */ |
| 63 | static pj_status_t ilbc_codec_init(pjmedia_codec *codec, |
| 64 | pj_pool_t *pool ); |
| 65 | static pj_status_t ilbc_codec_open(pjmedia_codec *codec, |
Benny Prijono | 6865a3f | 2006-12-30 02:46:57 +0000 | [diff] [blame] | 66 | pjmedia_codec_param *attr ); |
Benny Prijono | c585988 | 2006-07-31 15:25:14 +0000 | [diff] [blame] | 67 | static pj_status_t ilbc_codec_close(pjmedia_codec *codec ); |
Benny Prijono | b94a6ab | 2006-12-26 21:18:11 +0000 | [diff] [blame] | 68 | static pj_status_t ilbc_codec_modify(pjmedia_codec *codec, |
| 69 | const pjmedia_codec_param *attr ); |
Benny Prijono | c585988 | 2006-07-31 15:25:14 +0000 | [diff] [blame] | 70 | static pj_status_t ilbc_codec_parse(pjmedia_codec *codec, |
| 71 | void *pkt, |
| 72 | pj_size_t pkt_size, |
| 73 | const pj_timestamp *ts, |
| 74 | unsigned *frame_cnt, |
| 75 | pjmedia_frame frames[]); |
| 76 | static pj_status_t ilbc_codec_encode(pjmedia_codec *codec, |
| 77 | const struct pjmedia_frame *input, |
| 78 | unsigned output_buf_len, |
| 79 | struct pjmedia_frame *output); |
| 80 | static pj_status_t ilbc_codec_decode(pjmedia_codec *codec, |
| 81 | const struct pjmedia_frame *input, |
| 82 | unsigned output_buf_len, |
| 83 | struct pjmedia_frame *output); |
| 84 | static pj_status_t ilbc_codec_recover(pjmedia_codec *codec, |
| 85 | unsigned output_buf_len, |
| 86 | struct pjmedia_frame *output); |
| 87 | |
| 88 | /* Definition for iLBC codec operations. */ |
| 89 | static pjmedia_codec_op ilbc_op = |
| 90 | { |
| 91 | &ilbc_codec_init, |
| 92 | &ilbc_codec_open, |
| 93 | &ilbc_codec_close, |
Benny Prijono | b94a6ab | 2006-12-26 21:18:11 +0000 | [diff] [blame] | 94 | &ilbc_codec_modify, |
Benny Prijono | c585988 | 2006-07-31 15:25:14 +0000 | [diff] [blame] | 95 | &ilbc_codec_parse, |
| 96 | &ilbc_codec_encode, |
| 97 | &ilbc_codec_decode, |
| 98 | &ilbc_codec_recover |
| 99 | }; |
| 100 | |
| 101 | /* Definition for iLBC codec factory operations. */ |
| 102 | static pjmedia_codec_factory_op ilbc_factory_op = |
| 103 | { |
| 104 | &ilbc_test_alloc, |
| 105 | &ilbc_default_attr, |
| 106 | &ilbc_enum_codecs, |
| 107 | &ilbc_alloc_codec, |
| 108 | &ilbc_dealloc_codec |
| 109 | }; |
| 110 | |
| 111 | /* iLBC factory */ |
| 112 | static struct ilbc_factory |
| 113 | { |
| 114 | pjmedia_codec_factory base; |
| 115 | pjmedia_endpt *endpt; |
| 116 | |
| 117 | int mode; |
| 118 | int bps; |
| 119 | } ilbc_factory; |
| 120 | |
| 121 | |
| 122 | /* iLBC codec private data. */ |
| 123 | struct ilbc_codec |
| 124 | { |
| 125 | pjmedia_codec base; |
| 126 | pj_pool_t *pool; |
| 127 | char obj_name[PJ_MAX_OBJ_NAME]; |
| 128 | pjmedia_silence_det *vad; |
Benny Prijono | b94a6ab | 2006-12-26 21:18:11 +0000 | [diff] [blame] | 129 | pj_bool_t vad_enabled; |
Benny Prijono | c585988 | 2006-07-31 15:25:14 +0000 | [diff] [blame] | 130 | pj_bool_t plc_enabled; |
Benny Prijono | c6c0ed0 | 2007-01-20 05:18:14 +0000 | [diff] [blame] | 131 | pj_timestamp last_tx; |
Benny Prijono | c585988 | 2006-07-31 15:25:14 +0000 | [diff] [blame] | 132 | |
| 133 | pj_bool_t enc_ready; |
| 134 | iLBC_Enc_Inst_t enc; |
| 135 | unsigned enc_frame_size; |
| 136 | unsigned enc_samples_per_frame; |
| 137 | float enc_block[BLOCKL_MAX]; |
| 138 | |
| 139 | pj_bool_t dec_ready; |
| 140 | iLBC_Dec_Inst_t dec; |
| 141 | unsigned dec_frame_size; |
| 142 | unsigned dec_samples_per_frame; |
| 143 | float dec_block[BLOCKL_MAX]; |
| 144 | }; |
| 145 | |
| 146 | |
| 147 | |
| 148 | /* |
| 149 | * Initialize and register iLBC codec factory to pjmedia endpoint. |
| 150 | */ |
| 151 | PJ_DEF(pj_status_t) pjmedia_codec_ilbc_init( pjmedia_endpt *endpt, |
| 152 | int mode ) |
| 153 | { |
| 154 | pjmedia_codec_mgr *codec_mgr; |
| 155 | pj_status_t status; |
| 156 | |
| 157 | PJ_ASSERT_RETURN(endpt != NULL, PJ_EINVAL); |
| 158 | PJ_ASSERT_RETURN(mode==0 || mode==20 || mode==30, PJ_EINVAL); |
| 159 | |
| 160 | /* Create iLBC codec factory. */ |
| 161 | ilbc_factory.base.op = &ilbc_factory_op; |
| 162 | ilbc_factory.base.factory_data = NULL; |
| 163 | ilbc_factory.endpt = endpt; |
| 164 | |
| 165 | if (mode == 0) |
| 166 | mode = DEFAULT_MODE; |
| 167 | |
| 168 | ilbc_factory.mode = mode; |
| 169 | |
| 170 | if (mode == 20) { |
| 171 | ilbc_factory.bps = 15200; |
| 172 | } else { |
| 173 | ilbc_factory.bps = 13333; |
| 174 | } |
| 175 | |
| 176 | /* Get the codec manager. */ |
| 177 | codec_mgr = pjmedia_endpt_get_codec_mgr(endpt); |
| 178 | if (!codec_mgr) |
| 179 | return PJ_EINVALIDOP; |
| 180 | |
| 181 | /* Register codec factory to endpoint. */ |
| 182 | status = pjmedia_codec_mgr_register_factory(codec_mgr, |
| 183 | &ilbc_factory.base); |
| 184 | if (status != PJ_SUCCESS) |
| 185 | return status; |
| 186 | |
| 187 | |
| 188 | /* Done. */ |
| 189 | return PJ_SUCCESS; |
| 190 | } |
| 191 | |
| 192 | |
| 193 | |
| 194 | /* |
| 195 | * Unregister iLBC codec factory from pjmedia endpoint and deinitialize |
| 196 | * the iLBC codec library. |
| 197 | */ |
| 198 | PJ_DEF(pj_status_t) pjmedia_codec_ilbc_deinit(void) |
| 199 | { |
| 200 | pjmedia_codec_mgr *codec_mgr; |
| 201 | pj_status_t status; |
| 202 | |
| 203 | |
| 204 | /* Get the codec manager. */ |
| 205 | codec_mgr = pjmedia_endpt_get_codec_mgr(ilbc_factory.endpt); |
| 206 | if (!codec_mgr) |
| 207 | return PJ_EINVALIDOP; |
| 208 | |
| 209 | /* Unregister iLBC codec factory. */ |
| 210 | status = pjmedia_codec_mgr_unregister_factory(codec_mgr, |
| 211 | &ilbc_factory.base); |
| 212 | |
| 213 | return status; |
| 214 | } |
| 215 | |
| 216 | /* |
| 217 | * Check if factory can allocate the specified codec. |
| 218 | */ |
| 219 | static pj_status_t ilbc_test_alloc( pjmedia_codec_factory *factory, |
| 220 | const pjmedia_codec_info *info ) |
| 221 | { |
| 222 | const pj_str_t ilbc_tag = { "iLBC", 4}; |
| 223 | |
| 224 | PJ_UNUSED_ARG(factory); |
| 225 | PJ_ASSERT_RETURN(factory==&ilbc_factory.base, PJ_EINVAL); |
| 226 | |
| 227 | |
| 228 | /* Type MUST be audio. */ |
| 229 | if (info->type != PJMEDIA_TYPE_AUDIO) |
| 230 | return PJMEDIA_CODEC_EUNSUP; |
| 231 | |
| 232 | /* Check encoding name. */ |
| 233 | if (pj_stricmp(&info->encoding_name, &ilbc_tag) != 0) |
| 234 | return PJMEDIA_CODEC_EUNSUP; |
| 235 | |
| 236 | /* Check clock-rate */ |
| 237 | if (info->clock_rate != CLOCK_RATE) |
| 238 | return PJMEDIA_CODEC_EUNSUP; |
| 239 | |
| 240 | /* Channel count must be one */ |
| 241 | if (info->channel_cnt != 1) |
| 242 | return PJMEDIA_CODEC_EUNSUP; |
| 243 | |
| 244 | /* Yes, this should be iLBC! */ |
| 245 | return PJ_SUCCESS; |
| 246 | } |
| 247 | |
| 248 | |
| 249 | /* |
| 250 | * Generate default attribute. |
| 251 | */ |
| 252 | static pj_status_t ilbc_default_attr (pjmedia_codec_factory *factory, |
| 253 | const pjmedia_codec_info *id, |
| 254 | pjmedia_codec_param *attr ) |
| 255 | { |
| 256 | PJ_UNUSED_ARG(factory); |
| 257 | PJ_ASSERT_RETURN(factory==&ilbc_factory.base, PJ_EINVAL); |
| 258 | |
| 259 | PJ_UNUSED_ARG(id); |
| 260 | PJ_ASSERT_RETURN(pj_stricmp2(&id->encoding_name, "iLBC")==0, PJ_EINVAL); |
| 261 | |
| 262 | pj_bzero(attr, sizeof(pjmedia_codec_param)); |
| 263 | |
| 264 | attr->info.clock_rate = CLOCK_RATE; |
| 265 | attr->info.channel_cnt = 1; |
| 266 | attr->info.avg_bps = ilbc_factory.bps; |
Nanang Izzuddin | e4b4b7d | 2008-06-06 12:15:23 +0000 | [diff] [blame] | 267 | attr->info.max_bps = 15200; |
Benny Prijono | c585988 | 2006-07-31 15:25:14 +0000 | [diff] [blame] | 268 | attr->info.pcm_bits_per_sample = 16; |
| 269 | attr->info.frm_ptime = (short)ilbc_factory.mode; |
| 270 | attr->info.pt = PJMEDIA_RTP_PT_ILBC; |
| 271 | |
| 272 | attr->setting.frm_per_pkt = 1; |
| 273 | attr->setting.vad = 1; |
| 274 | attr->setting.plc = 1; |
| 275 | attr->setting.penh = 1; |
| 276 | attr->setting.dec_fmtp_mode = (pj_uint8_t)ilbc_factory.mode; |
| 277 | |
| 278 | return PJ_SUCCESS; |
| 279 | } |
| 280 | |
| 281 | /* |
| 282 | * Enum codecs supported by this factory (i.e. only iLBC!). |
| 283 | */ |
| 284 | static pj_status_t ilbc_enum_codecs(pjmedia_codec_factory *factory, |
| 285 | unsigned *count, |
| 286 | pjmedia_codec_info codecs[]) |
| 287 | { |
| 288 | PJ_UNUSED_ARG(factory); |
| 289 | PJ_ASSERT_RETURN(factory==&ilbc_factory.base, PJ_EINVAL); |
| 290 | |
| 291 | PJ_ASSERT_RETURN(codecs && *count > 0, PJ_EINVAL); |
| 292 | |
| 293 | pj_bzero(&codecs[0], sizeof(pjmedia_codec_info)); |
| 294 | |
| 295 | codecs[0].encoding_name = pj_str("iLBC"); |
| 296 | codecs[0].pt = PJMEDIA_RTP_PT_ILBC; |
| 297 | codecs[0].type = PJMEDIA_TYPE_AUDIO; |
| 298 | codecs[0].clock_rate = 8000; |
| 299 | codecs[0].channel_cnt = 1; |
| 300 | |
| 301 | *count = 1; |
| 302 | |
| 303 | return PJ_SUCCESS; |
| 304 | } |
| 305 | |
| 306 | /* |
| 307 | * Allocate a new iLBC codec instance. |
| 308 | */ |
| 309 | static pj_status_t ilbc_alloc_codec(pjmedia_codec_factory *factory, |
| 310 | const pjmedia_codec_info *id, |
| 311 | pjmedia_codec **p_codec) |
| 312 | { |
| 313 | pj_pool_t *pool; |
| 314 | struct ilbc_codec *codec; |
| 315 | |
| 316 | PJ_ASSERT_RETURN(factory && id && p_codec, PJ_EINVAL); |
| 317 | PJ_ASSERT_RETURN(factory == &ilbc_factory.base, PJ_EINVAL); |
| 318 | |
| 319 | pool = pjmedia_endpt_create_pool(ilbc_factory.endpt, "iLBC%p", |
| 320 | 2000, 2000); |
| 321 | PJ_ASSERT_RETURN(pool != NULL, PJ_ENOMEM); |
| 322 | |
Benny Prijono | a1e6968 | 2007-05-11 15:14:34 +0000 | [diff] [blame] | 323 | codec = PJ_POOL_ZALLOC_T(pool, struct ilbc_codec); |
Benny Prijono | c585988 | 2006-07-31 15:25:14 +0000 | [diff] [blame] | 324 | codec->base.op = &ilbc_op; |
| 325 | codec->base.factory = factory; |
| 326 | codec->pool = pool; |
| 327 | |
| 328 | pj_ansi_snprintf(codec->obj_name, sizeof(codec->obj_name), |
| 329 | "ilbc%p", codec); |
| 330 | |
| 331 | *p_codec = &codec->base; |
| 332 | return PJ_SUCCESS; |
| 333 | } |
| 334 | |
| 335 | |
| 336 | /* |
| 337 | * Free codec. |
| 338 | */ |
| 339 | static pj_status_t ilbc_dealloc_codec( pjmedia_codec_factory *factory, |
| 340 | pjmedia_codec *codec ) |
| 341 | { |
| 342 | struct ilbc_codec *ilbc_codec; |
| 343 | |
| 344 | PJ_ASSERT_RETURN(factory && codec, PJ_EINVAL); |
| 345 | PJ_UNUSED_ARG(factory); |
| 346 | PJ_ASSERT_RETURN(factory == &ilbc_factory.base, PJ_EINVAL); |
| 347 | |
| 348 | ilbc_codec = (struct ilbc_codec*) codec; |
| 349 | pj_pool_release(ilbc_codec->pool); |
| 350 | |
| 351 | return PJ_SUCCESS; |
| 352 | } |
| 353 | |
| 354 | /* |
| 355 | * Init codec. |
| 356 | */ |
| 357 | static pj_status_t ilbc_codec_init(pjmedia_codec *codec, |
| 358 | pj_pool_t *pool ) |
| 359 | { |
| 360 | PJ_UNUSED_ARG(codec); |
| 361 | PJ_UNUSED_ARG(pool); |
| 362 | return PJ_SUCCESS; |
| 363 | } |
| 364 | |
| 365 | /* |
| 366 | * Open codec. |
| 367 | */ |
| 368 | static pj_status_t ilbc_codec_open(pjmedia_codec *codec, |
Benny Prijono | 6865a3f | 2006-12-30 02:46:57 +0000 | [diff] [blame] | 369 | pjmedia_codec_param *attr ) |
Benny Prijono | c585988 | 2006-07-31 15:25:14 +0000 | [diff] [blame] | 370 | { |
| 371 | struct ilbc_codec *ilbc_codec = (struct ilbc_codec*)codec; |
Benny Prijono | b94a6ab | 2006-12-26 21:18:11 +0000 | [diff] [blame] | 372 | pj_status_t status; |
Benny Prijono | c585988 | 2006-07-31 15:25:14 +0000 | [diff] [blame] | 373 | |
| 374 | pj_assert(ilbc_codec != NULL); |
| 375 | pj_assert(ilbc_codec->enc_ready == PJ_FALSE && |
| 376 | ilbc_codec->dec_ready == PJ_FALSE); |
| 377 | |
| 378 | /* Decoder mode must be set */ |
| 379 | PJ_ASSERT_RETURN(attr->setting.dec_fmtp_mode==20 || |
| 380 | attr->setting.dec_fmtp_mode==30, PJMEDIA_CODEC_EINMODE); |
| 381 | |
| 382 | /* The enc mode must be set in the attribute |
| 383 | * (from the mode parameter in fmtp attribute in the SDP |
| 384 | * received from remote) |
| 385 | */ |
| 386 | if (attr->setting.enc_fmtp_mode == 0) |
| 387 | attr->setting.enc_fmtp_mode = attr->setting.dec_fmtp_mode; |
| 388 | |
| 389 | PJ_ASSERT_RETURN(attr->setting.enc_fmtp_mode==20 || |
| 390 | attr->setting.enc_fmtp_mode==30, PJMEDIA_CODEC_EINMODE); |
| 391 | |
Benny Prijono | 6865a3f | 2006-12-30 02:46:57 +0000 | [diff] [blame] | 392 | /* Update enc_ptime in the param */ |
| 393 | if (attr->setting.enc_fmtp_mode != attr->setting.dec_fmtp_mode) { |
| 394 | attr->info.enc_ptime = attr->setting.enc_fmtp_mode; |
| 395 | } else { |
| 396 | attr->info.enc_ptime = 0; |
| 397 | } |
| 398 | |
Benny Prijono | c585988 | 2006-07-31 15:25:14 +0000 | [diff] [blame] | 399 | /* Create enc */ |
| 400 | ilbc_codec->enc_frame_size = initEncode(&ilbc_codec->enc, |
| 401 | attr->setting.enc_fmtp_mode); |
| 402 | ilbc_codec->enc_samples_per_frame = CLOCK_RATE*attr->setting.enc_fmtp_mode/ |
| 403 | 1000; |
| 404 | ilbc_codec->enc_ready = PJ_TRUE; |
| 405 | |
| 406 | /* Create decoder */ |
| 407 | ilbc_codec->dec_samples_per_frame = initDecode(&ilbc_codec->dec, |
| 408 | attr->setting.dec_fmtp_mode, |
| 409 | attr->setting.penh); |
| 410 | if (attr->setting.dec_fmtp_mode == 20) |
| 411 | ilbc_codec->dec_frame_size = 38; |
Benny Prijono | 1d9b9a4 | 2006-09-25 13:40:12 +0000 | [diff] [blame] | 412 | else if (attr->setting.dec_fmtp_mode == 30) |
Benny Prijono | c585988 | 2006-07-31 15:25:14 +0000 | [diff] [blame] | 413 | ilbc_codec->dec_frame_size = 50; |
| 414 | else { |
| 415 | pj_assert(!"Invalid iLBC mode"); |
| 416 | ilbc_codec->dec_frame_size = ilbc_codec->enc_frame_size; |
| 417 | } |
| 418 | ilbc_codec->dec_ready = PJ_TRUE; |
| 419 | |
| 420 | /* Save plc flags */ |
Benny Prijono | b94a6ab | 2006-12-26 21:18:11 +0000 | [diff] [blame] | 421 | ilbc_codec->plc_enabled = (attr->setting.plc != 0); |
Benny Prijono | c585988 | 2006-07-31 15:25:14 +0000 | [diff] [blame] | 422 | |
Benny Prijono | b94a6ab | 2006-12-26 21:18:11 +0000 | [diff] [blame] | 423 | /* Create silence detector. */ |
| 424 | ilbc_codec->vad_enabled = (attr->setting.vad != 0); |
| 425 | status = pjmedia_silence_det_create(ilbc_codec->pool, CLOCK_RATE, |
| 426 | ilbc_codec->enc_samples_per_frame, |
| 427 | &ilbc_codec->vad); |
| 428 | if (status != PJ_SUCCESS) |
| 429 | return status; |
Benny Prijono | c585988 | 2006-07-31 15:25:14 +0000 | [diff] [blame] | 430 | |
Benny Prijono | c6c0ed0 | 2007-01-20 05:18:14 +0000 | [diff] [blame] | 431 | /* Init last_tx (not necessary because of zalloc, but better |
| 432 | * be safe in case someone remove zalloc later. |
| 433 | */ |
| 434 | pj_set_timestamp32(&ilbc_codec->last_tx, 0, 0); |
| 435 | |
Benny Prijono | c585988 | 2006-07-31 15:25:14 +0000 | [diff] [blame] | 436 | PJ_LOG(5,(ilbc_codec->obj_name, |
| 437 | "iLBC codec opened, encoder mode=%d, decoder mode=%d", |
| 438 | attr->setting.enc_fmtp_mode, attr->setting.dec_fmtp_mode)); |
| 439 | |
| 440 | return PJ_SUCCESS; |
| 441 | } |
| 442 | |
| 443 | |
| 444 | /* |
| 445 | * Close codec. |
| 446 | */ |
| 447 | static pj_status_t ilbc_codec_close( pjmedia_codec *codec ) |
| 448 | { |
| 449 | struct ilbc_codec *ilbc_codec = (struct ilbc_codec*)codec; |
| 450 | |
| 451 | PJ_UNUSED_ARG(codec); |
| 452 | |
| 453 | PJ_LOG(5,(ilbc_codec->obj_name, "iLBC codec closed")); |
| 454 | |
| 455 | return PJ_SUCCESS; |
| 456 | } |
| 457 | |
Benny Prijono | b94a6ab | 2006-12-26 21:18:11 +0000 | [diff] [blame] | 458 | /* |
| 459 | * Modify codec settings. |
| 460 | */ |
| 461 | static pj_status_t ilbc_codec_modify(pjmedia_codec *codec, |
| 462 | const pjmedia_codec_param *attr ) |
| 463 | { |
| 464 | struct ilbc_codec *ilbc_codec = (struct ilbc_codec*)codec; |
| 465 | |
| 466 | ilbc_codec->plc_enabled = (attr->setting.plc != 0); |
| 467 | ilbc_codec->vad_enabled = (attr->setting.vad != 0); |
| 468 | |
| 469 | return PJ_SUCCESS; |
| 470 | } |
Benny Prijono | c585988 | 2006-07-31 15:25:14 +0000 | [diff] [blame] | 471 | |
| 472 | /* |
| 473 | * Get frames in the packet. |
| 474 | */ |
| 475 | static pj_status_t ilbc_codec_parse( pjmedia_codec *codec, |
| 476 | void *pkt, |
| 477 | pj_size_t pkt_size, |
| 478 | const pj_timestamp *ts, |
| 479 | unsigned *frame_cnt, |
| 480 | pjmedia_frame frames[]) |
| 481 | { |
| 482 | struct ilbc_codec *ilbc_codec = (struct ilbc_codec*)codec; |
| 483 | unsigned count; |
| 484 | |
| 485 | PJ_ASSERT_RETURN(frame_cnt, PJ_EINVAL); |
| 486 | |
| 487 | count = 0; |
| 488 | while (pkt_size >= ilbc_codec->dec_frame_size && count < *frame_cnt) { |
| 489 | frames[count].type = PJMEDIA_FRAME_TYPE_AUDIO; |
| 490 | frames[count].buf = pkt; |
| 491 | frames[count].size = ilbc_codec->dec_frame_size; |
| 492 | frames[count].timestamp.u64 = ts->u64 + count * |
| 493 | ilbc_codec->dec_samples_per_frame; |
| 494 | |
| 495 | pkt = ((char*)pkt) + ilbc_codec->dec_frame_size; |
| 496 | pkt_size -= ilbc_codec->dec_frame_size; |
| 497 | |
| 498 | ++count; |
| 499 | } |
| 500 | |
| 501 | *frame_cnt = count; |
| 502 | return PJ_SUCCESS; |
| 503 | } |
| 504 | |
| 505 | /* |
| 506 | * Encode frame. |
| 507 | */ |
| 508 | static pj_status_t ilbc_codec_encode(pjmedia_codec *codec, |
| 509 | const struct pjmedia_frame *input, |
| 510 | unsigned output_buf_len, |
| 511 | struct pjmedia_frame *output) |
| 512 | { |
| 513 | struct ilbc_codec *ilbc_codec = (struct ilbc_codec*)codec; |
Nanang Izzuddin | 3aef5e1 | 2008-06-05 10:50:40 +0000 | [diff] [blame] | 514 | pj_int16_t *pcm_in; |
| 515 | unsigned nsamples; |
Benny Prijono | c585988 | 2006-07-31 15:25:14 +0000 | [diff] [blame] | 516 | |
Nanang Izzuddin | 3aef5e1 | 2008-06-05 10:50:40 +0000 | [diff] [blame] | 517 | pj_assert(ilbc_codec && input && output); |
Benny Prijono | c585988 | 2006-07-31 15:25:14 +0000 | [diff] [blame] | 518 | |
Nanang Izzuddin | 3aef5e1 | 2008-06-05 10:50:40 +0000 | [diff] [blame] | 519 | pcm_in = (pj_int16_t*)input->buf; |
| 520 | nsamples = input->size >> 1; |
Benny Prijono | c585988 | 2006-07-31 15:25:14 +0000 | [diff] [blame] | 521 | |
Nanang Izzuddin | 3aef5e1 | 2008-06-05 10:50:40 +0000 | [diff] [blame] | 522 | PJ_ASSERT_RETURN(nsamples % ilbc_codec->enc_samples_per_frame == 0, |
| 523 | PJMEDIA_CODEC_EPCMFRMINLEN); |
| 524 | PJ_ASSERT_RETURN(output_buf_len >= ilbc_codec->enc_frame_size * nsamples / |
| 525 | ilbc_codec->enc_samples_per_frame, |
| 526 | PJMEDIA_CODEC_EFRMTOOSHORT); |
Benny Prijono | c585988 | 2006-07-31 15:25:14 +0000 | [diff] [blame] | 527 | |
| 528 | /* Detect silence */ |
Benny Prijono | b94a6ab | 2006-12-26 21:18:11 +0000 | [diff] [blame] | 529 | if (ilbc_codec->vad_enabled) { |
Benny Prijono | c585988 | 2006-07-31 15:25:14 +0000 | [diff] [blame] | 530 | pj_bool_t is_silence; |
Benny Prijono | c6c0ed0 | 2007-01-20 05:18:14 +0000 | [diff] [blame] | 531 | pj_int32_t silence_period; |
| 532 | |
| 533 | silence_period = pj_timestamp_diff32(&ilbc_codec->last_tx, |
| 534 | &input->timestamp); |
Benny Prijono | c585988 | 2006-07-31 15:25:14 +0000 | [diff] [blame] | 535 | |
| 536 | is_silence = pjmedia_silence_det_detect(ilbc_codec->vad, |
Benny Prijono | a1e6968 | 2007-05-11 15:14:34 +0000 | [diff] [blame] | 537 | (const pj_int16_t*)input->buf, |
Benny Prijono | c6c0ed0 | 2007-01-20 05:18:14 +0000 | [diff] [blame] | 538 | (input->size >> 1), |
Benny Prijono | c585988 | 2006-07-31 15:25:14 +0000 | [diff] [blame] | 539 | NULL); |
Benny Prijono | c6c0ed0 | 2007-01-20 05:18:14 +0000 | [diff] [blame] | 540 | if (is_silence && |
| 541 | PJMEDIA_CODEC_MAX_SILENCE_PERIOD != -1 && |
Benny Prijono | dd3d002 | 2008-06-14 16:52:04 +0000 | [diff] [blame] | 542 | silence_period < PJMEDIA_CODEC_MAX_SILENCE_PERIOD*8000/1000) |
Benny Prijono | c6c0ed0 | 2007-01-20 05:18:14 +0000 | [diff] [blame] | 543 | { |
Benny Prijono | c585988 | 2006-07-31 15:25:14 +0000 | [diff] [blame] | 544 | output->type = PJMEDIA_FRAME_TYPE_NONE; |
| 545 | output->buf = NULL; |
| 546 | output->size = 0; |
Benny Prijono | c6c0ed0 | 2007-01-20 05:18:14 +0000 | [diff] [blame] | 547 | output->timestamp = input->timestamp; |
Benny Prijono | c585988 | 2006-07-31 15:25:14 +0000 | [diff] [blame] | 548 | return PJ_SUCCESS; |
Benny Prijono | c6c0ed0 | 2007-01-20 05:18:14 +0000 | [diff] [blame] | 549 | } else { |
| 550 | ilbc_codec->last_tx = input->timestamp; |
Benny Prijono | c585988 | 2006-07-31 15:25:14 +0000 | [diff] [blame] | 551 | } |
| 552 | } |
| 553 | |
Nanang Izzuddin | 3aef5e1 | 2008-06-05 10:50:40 +0000 | [diff] [blame] | 554 | /* Encode */ |
| 555 | output->size = 0; |
| 556 | while (nsamples >= ilbc_codec->enc_samples_per_frame) { |
| 557 | unsigned i; |
| 558 | |
| 559 | /* Convert to float */ |
| 560 | for (i=0; i<ilbc_codec->enc_samples_per_frame; ++i) { |
| 561 | ilbc_codec->enc_block[i] = (float) (*pcm_in++); |
| 562 | } |
| 563 | |
| 564 | iLBC_encode((unsigned char *)output->buf + output->size, |
| 565 | ilbc_codec->enc_block, |
| 566 | &ilbc_codec->enc); |
| 567 | |
| 568 | output->size += ilbc_codec->enc.no_of_bytes; |
| 569 | nsamples -= ilbc_codec->enc_samples_per_frame; |
Benny Prijono | c585988 | 2006-07-31 15:25:14 +0000 | [diff] [blame] | 570 | } |
| 571 | |
Benny Prijono | c585988 | 2006-07-31 15:25:14 +0000 | [diff] [blame] | 572 | output->type = PJMEDIA_FRAME_TYPE_AUDIO; |
Benny Prijono | c6c0ed0 | 2007-01-20 05:18:14 +0000 | [diff] [blame] | 573 | output->timestamp = input->timestamp; |
Benny Prijono | c585988 | 2006-07-31 15:25:14 +0000 | [diff] [blame] | 574 | |
| 575 | return PJ_SUCCESS; |
| 576 | } |
| 577 | |
| 578 | /* |
| 579 | * Decode frame. |
| 580 | */ |
| 581 | static pj_status_t ilbc_codec_decode(pjmedia_codec *codec, |
| 582 | const struct pjmedia_frame *input, |
| 583 | unsigned output_buf_len, |
| 584 | struct pjmedia_frame *output) |
| 585 | { |
| 586 | struct ilbc_codec *ilbc_codec = (struct ilbc_codec*)codec; |
| 587 | unsigned i; |
| 588 | |
| 589 | pj_assert(ilbc_codec != NULL); |
| 590 | PJ_ASSERT_RETURN(input && output, PJ_EINVAL); |
| 591 | |
Benny Prijono | c6c0ed0 | 2007-01-20 05:18:14 +0000 | [diff] [blame] | 592 | if (output_buf_len < (ilbc_codec->dec_samples_per_frame << 1)) |
Benny Prijono | c585988 | 2006-07-31 15:25:14 +0000 | [diff] [blame] | 593 | return PJMEDIA_CODEC_EPCMTOOSHORT; |
| 594 | |
| 595 | if (input->size != ilbc_codec->dec_frame_size) |
| 596 | return PJMEDIA_CODEC_EFRMINLEN; |
| 597 | |
| 598 | /* Decode to temporary buffer */ |
Benny Prijono | a1e6968 | 2007-05-11 15:14:34 +0000 | [diff] [blame] | 599 | iLBC_decode(ilbc_codec->dec_block, (unsigned char*) input->buf, |
Benny Prijono | c585988 | 2006-07-31 15:25:14 +0000 | [diff] [blame] | 600 | &ilbc_codec->dec, 1); |
| 601 | |
| 602 | /* Convert decodec samples from float to short */ |
| 603 | for (i=0; i<ilbc_codec->dec_samples_per_frame; ++i) { |
| 604 | ((short*)output->buf)[i] = (short)ilbc_codec->dec_block[i]; |
| 605 | } |
Benny Prijono | c6c0ed0 | 2007-01-20 05:18:14 +0000 | [diff] [blame] | 606 | output->size = (ilbc_codec->dec_samples_per_frame << 1); |
Benny Prijono | c585988 | 2006-07-31 15:25:14 +0000 | [diff] [blame] | 607 | output->type = PJMEDIA_FRAME_TYPE_AUDIO; |
Benny Prijono | c6c0ed0 | 2007-01-20 05:18:14 +0000 | [diff] [blame] | 608 | output->timestamp = input->timestamp; |
Benny Prijono | c585988 | 2006-07-31 15:25:14 +0000 | [diff] [blame] | 609 | |
| 610 | return PJ_SUCCESS; |
| 611 | } |
| 612 | |
| 613 | |
| 614 | /* |
| 615 | * Recover lost frame. |
| 616 | */ |
| 617 | static pj_status_t ilbc_codec_recover(pjmedia_codec *codec, |
| 618 | unsigned output_buf_len, |
| 619 | struct pjmedia_frame *output) |
| 620 | { |
| 621 | struct ilbc_codec *ilbc_codec = (struct ilbc_codec*)codec; |
| 622 | unsigned i; |
| 623 | |
| 624 | pj_assert(ilbc_codec != NULL); |
| 625 | PJ_ASSERT_RETURN(output, PJ_EINVAL); |
| 626 | |
Benny Prijono | c6c0ed0 | 2007-01-20 05:18:14 +0000 | [diff] [blame] | 627 | if (output_buf_len < (ilbc_codec->dec_samples_per_frame << 1)) |
Benny Prijono | c585988 | 2006-07-31 15:25:14 +0000 | [diff] [blame] | 628 | return PJMEDIA_CODEC_EPCMTOOSHORT; |
| 629 | |
| 630 | /* Decode to temporary buffer */ |
| 631 | iLBC_decode(ilbc_codec->dec_block, NULL, &ilbc_codec->dec, 0); |
| 632 | |
| 633 | /* Convert decodec samples from float to short */ |
| 634 | for (i=0; i<ilbc_codec->dec_samples_per_frame; ++i) { |
| 635 | ((short*)output->buf)[i] = (short)ilbc_codec->dec_block[i]; |
| 636 | } |
Benny Prijono | c6c0ed0 | 2007-01-20 05:18:14 +0000 | [diff] [blame] | 637 | output->size = (ilbc_codec->dec_samples_per_frame << 1); |
Benny Prijono | c585988 | 2006-07-31 15:25:14 +0000 | [diff] [blame] | 638 | output->type = PJMEDIA_FRAME_TYPE_AUDIO; |
| 639 | |
| 640 | return PJ_SUCCESS; |
| 641 | } |
| 642 | |
| 643 | |
| 644 | #endif /* PJMEDIA_HAS_ILBC_CODEC */ |
| 645 | |