Benny Prijono | c585988 | 2006-07-31 15:25:14 +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 | c585988 | 2006-07-31 15:25:14 +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/ilbc.h> |
| 21 | #include <pjmedia-codec/types.h> |
| 22 | #include <pjmedia/codec.h> |
| 23 | #include <pjmedia/errno.h> |
| 24 | #include <pjmedia/endpoint.h> |
| 25 | #include <pjmedia/plc.h> |
| 26 | #include <pjmedia/port.h> |
| 27 | #include <pjmedia/silencedet.h> |
| 28 | #include <pj/assert.h> |
| 29 | #include <pj/log.h> |
| 30 | #include <pj/pool.h> |
| 31 | #include <pj/string.h> |
| 32 | #include <pj/os.h> |
Benny Prijono | c585988 | 2006-07-31 15:25:14 +0000 | [diff] [blame] | 33 | |
Benny Prijono | fb1d2dd | 2010-11-03 07:33:07 +0000 | [diff] [blame^] | 34 | #if defined(PJMEDIA_ILBC_CODEC_USE_COREAUDIO)&& PJMEDIA_ILBC_CODEC_USE_COREAUDIO |
Sauw Ming | b83b3f3 | 2010-04-13 14:29:56 +0000 | [diff] [blame] | 35 | #include <AudioToolbox/AudioToolbox.h> |
| 36 | #define iLBC_Enc_Inst_t AudioConverterRef |
| 37 | #define iLBC_Dec_Inst_t AudioConverterRef |
| 38 | #define BLOCKL_MAX 1 |
| 39 | #else |
| 40 | #include "../../third_party/ilbc/iLBC_encode.h" |
| 41 | #include "../../third_party/ilbc/iLBC_decode.h" |
| 42 | #endif |
Benny Prijono | c585988 | 2006-07-31 15:25:14 +0000 | [diff] [blame] | 43 | |
| 44 | /* |
| 45 | * Only build this file if PJMEDIA_HAS_ILBC_CODEC != 0 |
| 46 | */ |
| 47 | #if defined(PJMEDIA_HAS_ILBC_CODEC) && PJMEDIA_HAS_ILBC_CODEC != 0 |
| 48 | |
| 49 | |
| 50 | #define THIS_FILE "ilbc.c" |
| 51 | #define CLOCK_RATE 8000 |
| 52 | #define DEFAULT_MODE 30 |
| 53 | |
| 54 | |
| 55 | /* Prototypes for iLBC factory */ |
| 56 | static pj_status_t ilbc_test_alloc(pjmedia_codec_factory *factory, |
| 57 | const pjmedia_codec_info *id ); |
| 58 | static pj_status_t ilbc_default_attr(pjmedia_codec_factory *factory, |
| 59 | const pjmedia_codec_info *id, |
| 60 | pjmedia_codec_param *attr ); |
| 61 | static pj_status_t ilbc_enum_codecs(pjmedia_codec_factory *factory, |
| 62 | unsigned *count, |
| 63 | pjmedia_codec_info codecs[]); |
| 64 | static pj_status_t ilbc_alloc_codec(pjmedia_codec_factory *factory, |
| 65 | const pjmedia_codec_info *id, |
| 66 | pjmedia_codec **p_codec); |
| 67 | static pj_status_t ilbc_dealloc_codec(pjmedia_codec_factory *factory, |
| 68 | pjmedia_codec *codec ); |
| 69 | |
| 70 | /* Prototypes for iLBC implementation. */ |
| 71 | static pj_status_t ilbc_codec_init(pjmedia_codec *codec, |
| 72 | pj_pool_t *pool ); |
| 73 | static pj_status_t ilbc_codec_open(pjmedia_codec *codec, |
Benny Prijono | 6865a3f | 2006-12-30 02:46:57 +0000 | [diff] [blame] | 74 | pjmedia_codec_param *attr ); |
Benny Prijono | c585988 | 2006-07-31 15:25:14 +0000 | [diff] [blame] | 75 | static pj_status_t ilbc_codec_close(pjmedia_codec *codec ); |
Benny Prijono | b94a6ab | 2006-12-26 21:18:11 +0000 | [diff] [blame] | 76 | static pj_status_t ilbc_codec_modify(pjmedia_codec *codec, |
| 77 | const pjmedia_codec_param *attr ); |
Benny Prijono | c585988 | 2006-07-31 15:25:14 +0000 | [diff] [blame] | 78 | static pj_status_t ilbc_codec_parse(pjmedia_codec *codec, |
| 79 | void *pkt, |
| 80 | pj_size_t pkt_size, |
| 81 | const pj_timestamp *ts, |
| 82 | unsigned *frame_cnt, |
| 83 | pjmedia_frame frames[]); |
| 84 | static pj_status_t ilbc_codec_encode(pjmedia_codec *codec, |
| 85 | const struct pjmedia_frame *input, |
| 86 | unsigned output_buf_len, |
| 87 | struct pjmedia_frame *output); |
| 88 | static pj_status_t ilbc_codec_decode(pjmedia_codec *codec, |
| 89 | const struct pjmedia_frame *input, |
| 90 | unsigned output_buf_len, |
| 91 | struct pjmedia_frame *output); |
| 92 | static pj_status_t ilbc_codec_recover(pjmedia_codec *codec, |
| 93 | unsigned output_buf_len, |
| 94 | struct pjmedia_frame *output); |
| 95 | |
| 96 | /* Definition for iLBC codec operations. */ |
| 97 | static pjmedia_codec_op ilbc_op = |
| 98 | { |
| 99 | &ilbc_codec_init, |
| 100 | &ilbc_codec_open, |
| 101 | &ilbc_codec_close, |
Benny Prijono | b94a6ab | 2006-12-26 21:18:11 +0000 | [diff] [blame] | 102 | &ilbc_codec_modify, |
Benny Prijono | c585988 | 2006-07-31 15:25:14 +0000 | [diff] [blame] | 103 | &ilbc_codec_parse, |
| 104 | &ilbc_codec_encode, |
| 105 | &ilbc_codec_decode, |
| 106 | &ilbc_codec_recover |
| 107 | }; |
| 108 | |
| 109 | /* Definition for iLBC codec factory operations. */ |
| 110 | static pjmedia_codec_factory_op ilbc_factory_op = |
| 111 | { |
| 112 | &ilbc_test_alloc, |
| 113 | &ilbc_default_attr, |
| 114 | &ilbc_enum_codecs, |
| 115 | &ilbc_alloc_codec, |
| 116 | &ilbc_dealloc_codec |
| 117 | }; |
| 118 | |
| 119 | /* iLBC factory */ |
| 120 | static struct ilbc_factory |
| 121 | { |
| 122 | pjmedia_codec_factory base; |
| 123 | pjmedia_endpt *endpt; |
| 124 | |
| 125 | int mode; |
| 126 | int bps; |
| 127 | } ilbc_factory; |
| 128 | |
| 129 | |
| 130 | /* iLBC codec private data. */ |
| 131 | struct ilbc_codec |
| 132 | { |
| 133 | pjmedia_codec base; |
| 134 | pj_pool_t *pool; |
| 135 | char obj_name[PJ_MAX_OBJ_NAME]; |
| 136 | pjmedia_silence_det *vad; |
Benny Prijono | b94a6ab | 2006-12-26 21:18:11 +0000 | [diff] [blame] | 137 | pj_bool_t vad_enabled; |
Benny Prijono | c585988 | 2006-07-31 15:25:14 +0000 | [diff] [blame] | 138 | pj_bool_t plc_enabled; |
Benny Prijono | c6c0ed0 | 2007-01-20 05:18:14 +0000 | [diff] [blame] | 139 | pj_timestamp last_tx; |
Benny Prijono | c585988 | 2006-07-31 15:25:14 +0000 | [diff] [blame] | 140 | |
Sauw Ming | b83b3f3 | 2010-04-13 14:29:56 +0000 | [diff] [blame] | 141 | |
Benny Prijono | c585988 | 2006-07-31 15:25:14 +0000 | [diff] [blame] | 142 | pj_bool_t enc_ready; |
| 143 | iLBC_Enc_Inst_t enc; |
| 144 | unsigned enc_frame_size; |
| 145 | unsigned enc_samples_per_frame; |
| 146 | float enc_block[BLOCKL_MAX]; |
| 147 | |
| 148 | pj_bool_t dec_ready; |
| 149 | iLBC_Dec_Inst_t dec; |
| 150 | unsigned dec_frame_size; |
| 151 | unsigned dec_samples_per_frame; |
| 152 | float dec_block[BLOCKL_MAX]; |
Sauw Ming | b83b3f3 | 2010-04-13 14:29:56 +0000 | [diff] [blame] | 153 | |
Benny Prijono | fb1d2dd | 2010-11-03 07:33:07 +0000 | [diff] [blame^] | 154 | #if defined(PJMEDIA_ILBC_CODEC_USE_COREAUDIO)&& PJMEDIA_ILBC_CODEC_USE_COREAUDIO |
Sauw Ming | b83b3f3 | 2010-04-13 14:29:56 +0000 | [diff] [blame] | 155 | unsigned enc_total_packets; |
| 156 | char *enc_buffer; |
| 157 | unsigned enc_buffer_offset; |
| 158 | |
| 159 | unsigned dec_total_packets; |
| 160 | char *dec_buffer; |
| 161 | unsigned dec_buffer_offset; |
| 162 | #endif |
Benny Prijono | c585988 | 2006-07-31 15:25:14 +0000 | [diff] [blame] | 163 | }; |
| 164 | |
Nanang Izzuddin | 23a00b7 | 2008-08-25 13:58:25 +0000 | [diff] [blame] | 165 | static pj_str_t STR_MODE = {"mode", 4}; |
Benny Prijono | c585988 | 2006-07-31 15:25:14 +0000 | [diff] [blame] | 166 | |
| 167 | /* |
| 168 | * Initialize and register iLBC codec factory to pjmedia endpoint. |
| 169 | */ |
| 170 | PJ_DEF(pj_status_t) pjmedia_codec_ilbc_init( pjmedia_endpt *endpt, |
| 171 | int mode ) |
| 172 | { |
| 173 | pjmedia_codec_mgr *codec_mgr; |
| 174 | pj_status_t status; |
| 175 | |
| 176 | PJ_ASSERT_RETURN(endpt != NULL, PJ_EINVAL); |
| 177 | PJ_ASSERT_RETURN(mode==0 || mode==20 || mode==30, PJ_EINVAL); |
| 178 | |
| 179 | /* Create iLBC codec factory. */ |
| 180 | ilbc_factory.base.op = &ilbc_factory_op; |
| 181 | ilbc_factory.base.factory_data = NULL; |
| 182 | ilbc_factory.endpt = endpt; |
| 183 | |
| 184 | if (mode == 0) |
| 185 | mode = DEFAULT_MODE; |
| 186 | |
| 187 | ilbc_factory.mode = mode; |
| 188 | |
| 189 | if (mode == 20) { |
| 190 | ilbc_factory.bps = 15200; |
| 191 | } else { |
| 192 | ilbc_factory.bps = 13333; |
| 193 | } |
| 194 | |
| 195 | /* Get the codec manager. */ |
| 196 | codec_mgr = pjmedia_endpt_get_codec_mgr(endpt); |
| 197 | if (!codec_mgr) |
| 198 | return PJ_EINVALIDOP; |
| 199 | |
| 200 | /* Register codec factory to endpoint. */ |
| 201 | status = pjmedia_codec_mgr_register_factory(codec_mgr, |
| 202 | &ilbc_factory.base); |
| 203 | if (status != PJ_SUCCESS) |
| 204 | return status; |
| 205 | |
| 206 | |
| 207 | /* Done. */ |
| 208 | return PJ_SUCCESS; |
| 209 | } |
| 210 | |
| 211 | |
| 212 | |
| 213 | /* |
| 214 | * Unregister iLBC codec factory from pjmedia endpoint and deinitialize |
| 215 | * the iLBC codec library. |
| 216 | */ |
| 217 | PJ_DEF(pj_status_t) pjmedia_codec_ilbc_deinit(void) |
| 218 | { |
| 219 | pjmedia_codec_mgr *codec_mgr; |
| 220 | pj_status_t status; |
| 221 | |
| 222 | |
| 223 | /* Get the codec manager. */ |
| 224 | codec_mgr = pjmedia_endpt_get_codec_mgr(ilbc_factory.endpt); |
| 225 | if (!codec_mgr) |
| 226 | return PJ_EINVALIDOP; |
| 227 | |
| 228 | /* Unregister iLBC codec factory. */ |
| 229 | status = pjmedia_codec_mgr_unregister_factory(codec_mgr, |
| 230 | &ilbc_factory.base); |
| 231 | |
| 232 | return status; |
| 233 | } |
| 234 | |
| 235 | /* |
| 236 | * Check if factory can allocate the specified codec. |
| 237 | */ |
| 238 | static pj_status_t ilbc_test_alloc( pjmedia_codec_factory *factory, |
| 239 | const pjmedia_codec_info *info ) |
| 240 | { |
| 241 | const pj_str_t ilbc_tag = { "iLBC", 4}; |
| 242 | |
| 243 | PJ_UNUSED_ARG(factory); |
| 244 | PJ_ASSERT_RETURN(factory==&ilbc_factory.base, PJ_EINVAL); |
| 245 | |
| 246 | |
| 247 | /* Type MUST be audio. */ |
| 248 | if (info->type != PJMEDIA_TYPE_AUDIO) |
| 249 | return PJMEDIA_CODEC_EUNSUP; |
| 250 | |
| 251 | /* Check encoding name. */ |
| 252 | if (pj_stricmp(&info->encoding_name, &ilbc_tag) != 0) |
| 253 | return PJMEDIA_CODEC_EUNSUP; |
| 254 | |
| 255 | /* Check clock-rate */ |
| 256 | if (info->clock_rate != CLOCK_RATE) |
| 257 | return PJMEDIA_CODEC_EUNSUP; |
| 258 | |
| 259 | /* Channel count must be one */ |
| 260 | if (info->channel_cnt != 1) |
| 261 | return PJMEDIA_CODEC_EUNSUP; |
| 262 | |
| 263 | /* Yes, this should be iLBC! */ |
| 264 | return PJ_SUCCESS; |
| 265 | } |
| 266 | |
| 267 | |
| 268 | /* |
| 269 | * Generate default attribute. |
| 270 | */ |
| 271 | static pj_status_t ilbc_default_attr (pjmedia_codec_factory *factory, |
| 272 | const pjmedia_codec_info *id, |
| 273 | pjmedia_codec_param *attr ) |
| 274 | { |
| 275 | PJ_UNUSED_ARG(factory); |
| 276 | PJ_ASSERT_RETURN(factory==&ilbc_factory.base, PJ_EINVAL); |
| 277 | |
| 278 | PJ_UNUSED_ARG(id); |
| 279 | PJ_ASSERT_RETURN(pj_stricmp2(&id->encoding_name, "iLBC")==0, PJ_EINVAL); |
| 280 | |
| 281 | pj_bzero(attr, sizeof(pjmedia_codec_param)); |
| 282 | |
| 283 | attr->info.clock_rate = CLOCK_RATE; |
| 284 | attr->info.channel_cnt = 1; |
| 285 | attr->info.avg_bps = ilbc_factory.bps; |
Nanang Izzuddin | e4b4b7d | 2008-06-06 12:15:23 +0000 | [diff] [blame] | 286 | attr->info.max_bps = 15200; |
Benny Prijono | c585988 | 2006-07-31 15:25:14 +0000 | [diff] [blame] | 287 | attr->info.pcm_bits_per_sample = 16; |
| 288 | attr->info.frm_ptime = (short)ilbc_factory.mode; |
| 289 | attr->info.pt = PJMEDIA_RTP_PT_ILBC; |
| 290 | |
| 291 | attr->setting.frm_per_pkt = 1; |
| 292 | attr->setting.vad = 1; |
| 293 | attr->setting.plc = 1; |
| 294 | attr->setting.penh = 1; |
Nanang Izzuddin | 23a00b7 | 2008-08-25 13:58:25 +0000 | [diff] [blame] | 295 | attr->setting.dec_fmtp.cnt = 1; |
| 296 | attr->setting.dec_fmtp.param[0].name = STR_MODE; |
| 297 | if (ilbc_factory.mode == 30) |
| 298 | attr->setting.dec_fmtp.param[0].val = pj_str("30"); |
| 299 | else |
| 300 | attr->setting.dec_fmtp.param[0].val = pj_str("20"); |
Benny Prijono | c585988 | 2006-07-31 15:25:14 +0000 | [diff] [blame] | 301 | |
| 302 | return PJ_SUCCESS; |
| 303 | } |
| 304 | |
| 305 | /* |
| 306 | * Enum codecs supported by this factory (i.e. only iLBC!). |
| 307 | */ |
| 308 | static pj_status_t ilbc_enum_codecs(pjmedia_codec_factory *factory, |
| 309 | unsigned *count, |
| 310 | pjmedia_codec_info codecs[]) |
| 311 | { |
| 312 | PJ_UNUSED_ARG(factory); |
| 313 | PJ_ASSERT_RETURN(factory==&ilbc_factory.base, PJ_EINVAL); |
| 314 | |
| 315 | PJ_ASSERT_RETURN(codecs && *count > 0, PJ_EINVAL); |
| 316 | |
| 317 | pj_bzero(&codecs[0], sizeof(pjmedia_codec_info)); |
| 318 | |
| 319 | codecs[0].encoding_name = pj_str("iLBC"); |
| 320 | codecs[0].pt = PJMEDIA_RTP_PT_ILBC; |
| 321 | codecs[0].type = PJMEDIA_TYPE_AUDIO; |
| 322 | codecs[0].clock_rate = 8000; |
| 323 | codecs[0].channel_cnt = 1; |
| 324 | |
| 325 | *count = 1; |
| 326 | |
| 327 | return PJ_SUCCESS; |
| 328 | } |
| 329 | |
| 330 | /* |
| 331 | * Allocate a new iLBC codec instance. |
| 332 | */ |
| 333 | static pj_status_t ilbc_alloc_codec(pjmedia_codec_factory *factory, |
| 334 | const pjmedia_codec_info *id, |
| 335 | pjmedia_codec **p_codec) |
| 336 | { |
| 337 | pj_pool_t *pool; |
| 338 | struct ilbc_codec *codec; |
| 339 | |
| 340 | PJ_ASSERT_RETURN(factory && id && p_codec, PJ_EINVAL); |
| 341 | PJ_ASSERT_RETURN(factory == &ilbc_factory.base, PJ_EINVAL); |
| 342 | |
| 343 | pool = pjmedia_endpt_create_pool(ilbc_factory.endpt, "iLBC%p", |
| 344 | 2000, 2000); |
| 345 | PJ_ASSERT_RETURN(pool != NULL, PJ_ENOMEM); |
| 346 | |
Benny Prijono | a1e6968 | 2007-05-11 15:14:34 +0000 | [diff] [blame] | 347 | codec = PJ_POOL_ZALLOC_T(pool, struct ilbc_codec); |
Benny Prijono | c585988 | 2006-07-31 15:25:14 +0000 | [diff] [blame] | 348 | codec->base.op = &ilbc_op; |
| 349 | codec->base.factory = factory; |
| 350 | codec->pool = pool; |
| 351 | |
| 352 | pj_ansi_snprintf(codec->obj_name, sizeof(codec->obj_name), |
| 353 | "ilbc%p", codec); |
| 354 | |
| 355 | *p_codec = &codec->base; |
| 356 | return PJ_SUCCESS; |
| 357 | } |
| 358 | |
| 359 | |
| 360 | /* |
| 361 | * Free codec. |
| 362 | */ |
| 363 | static pj_status_t ilbc_dealloc_codec( pjmedia_codec_factory *factory, |
| 364 | pjmedia_codec *codec ) |
| 365 | { |
| 366 | struct ilbc_codec *ilbc_codec; |
| 367 | |
| 368 | PJ_ASSERT_RETURN(factory && codec, PJ_EINVAL); |
| 369 | PJ_UNUSED_ARG(factory); |
| 370 | PJ_ASSERT_RETURN(factory == &ilbc_factory.base, PJ_EINVAL); |
| 371 | |
| 372 | ilbc_codec = (struct ilbc_codec*) codec; |
Sauw Ming | b83b3f3 | 2010-04-13 14:29:56 +0000 | [diff] [blame] | 373 | |
Benny Prijono | fb1d2dd | 2010-11-03 07:33:07 +0000 | [diff] [blame^] | 374 | #if defined(PJMEDIA_ILBC_CODEC_USE_COREAUDIO)&& PJMEDIA_ILBC_CODEC_USE_COREAUDIO |
Sauw Ming | b83b3f3 | 2010-04-13 14:29:56 +0000 | [diff] [blame] | 375 | if (ilbc_codec->enc) { |
| 376 | AudioConverterDispose(ilbc_codec->enc); |
| 377 | ilbc_codec->enc = NULL; |
| 378 | } |
| 379 | if (ilbc_codec->dec) { |
| 380 | AudioConverterDispose(ilbc_codec->dec); |
| 381 | ilbc_codec->dec = NULL; |
| 382 | } |
| 383 | #endif |
| 384 | |
Benny Prijono | c585988 | 2006-07-31 15:25:14 +0000 | [diff] [blame] | 385 | pj_pool_release(ilbc_codec->pool); |
| 386 | |
| 387 | return PJ_SUCCESS; |
| 388 | } |
| 389 | |
| 390 | /* |
| 391 | * Init codec. |
| 392 | */ |
| 393 | static pj_status_t ilbc_codec_init(pjmedia_codec *codec, |
| 394 | pj_pool_t *pool ) |
| 395 | { |
| 396 | PJ_UNUSED_ARG(codec); |
| 397 | PJ_UNUSED_ARG(pool); |
| 398 | return PJ_SUCCESS; |
| 399 | } |
| 400 | |
| 401 | /* |
| 402 | * Open codec. |
| 403 | */ |
| 404 | static pj_status_t ilbc_codec_open(pjmedia_codec *codec, |
Benny Prijono | 6865a3f | 2006-12-30 02:46:57 +0000 | [diff] [blame] | 405 | pjmedia_codec_param *attr ) |
Benny Prijono | c585988 | 2006-07-31 15:25:14 +0000 | [diff] [blame] | 406 | { |
| 407 | struct ilbc_codec *ilbc_codec = (struct ilbc_codec*)codec; |
Benny Prijono | b94a6ab | 2006-12-26 21:18:11 +0000 | [diff] [blame] | 408 | pj_status_t status; |
Nanang Izzuddin | 873f3e4 | 2009-07-15 17:55:16 +0000 | [diff] [blame] | 409 | unsigned i; |
| 410 | pj_uint16_t dec_fmtp_mode = DEFAULT_MODE, |
| 411 | enc_fmtp_mode = DEFAULT_MODE; |
Benny Prijono | c585988 | 2006-07-31 15:25:14 +0000 | [diff] [blame] | 412 | |
Benny Prijono | fb1d2dd | 2010-11-03 07:33:07 +0000 | [diff] [blame^] | 413 | #if defined(PJMEDIA_ILBC_CODEC_USE_COREAUDIO)&& PJMEDIA_ILBC_CODEC_USE_COREAUDIO |
Sauw Ming | b83b3f3 | 2010-04-13 14:29:56 +0000 | [diff] [blame] | 414 | AudioStreamBasicDescription srcFormat, dstFormat; |
| 415 | UInt32 size; |
| 416 | |
| 417 | srcFormat.mSampleRate = attr->info.clock_rate; |
| 418 | srcFormat.mFormatID = kAudioFormatLinearPCM; |
| 419 | srcFormat.mFormatFlags = kLinearPCMFormatFlagIsSignedInteger |
| 420 | | kLinearPCMFormatFlagIsPacked; |
| 421 | srcFormat.mBitsPerChannel = attr->info.pcm_bits_per_sample; |
| 422 | srcFormat.mChannelsPerFrame = attr->info.channel_cnt; |
| 423 | srcFormat.mBytesPerFrame = srcFormat.mChannelsPerFrame |
| 424 | * srcFormat.mBitsPerChannel >> 3; |
| 425 | srcFormat.mFramesPerPacket = 1; |
| 426 | srcFormat.mBytesPerPacket = srcFormat.mBytesPerFrame * |
| 427 | srcFormat.mFramesPerPacket; |
| 428 | |
| 429 | memset(&dstFormat, 0, sizeof(dstFormat)); |
| 430 | dstFormat.mSampleRate = attr->info.clock_rate; |
| 431 | dstFormat.mFormatID = kAudioFormatiLBC; |
| 432 | dstFormat.mChannelsPerFrame = attr->info.channel_cnt; |
| 433 | #endif |
| 434 | |
Benny Prijono | c585988 | 2006-07-31 15:25:14 +0000 | [diff] [blame] | 435 | pj_assert(ilbc_codec != NULL); |
| 436 | pj_assert(ilbc_codec->enc_ready == PJ_FALSE && |
| 437 | ilbc_codec->dec_ready == PJ_FALSE); |
| 438 | |
Nanang Izzuddin | 23a00b7 | 2008-08-25 13:58:25 +0000 | [diff] [blame] | 439 | /* Get decoder mode */ |
| 440 | for (i = 0; i < attr->setting.dec_fmtp.cnt; ++i) { |
| 441 | if (pj_stricmp(&attr->setting.dec_fmtp.param[i].name, &STR_MODE) == 0) |
| 442 | { |
Nanang Izzuddin | 873f3e4 | 2009-07-15 17:55:16 +0000 | [diff] [blame] | 443 | dec_fmtp_mode = (pj_uint16_t) |
Nanang Izzuddin | 23a00b7 | 2008-08-25 13:58:25 +0000 | [diff] [blame] | 444 | pj_strtoul(&attr->setting.dec_fmtp.param[i].val); |
| 445 | break; |
| 446 | } |
| 447 | } |
| 448 | |
Benny Prijono | c585988 | 2006-07-31 15:25:14 +0000 | [diff] [blame] | 449 | /* Decoder mode must be set */ |
Nanang Izzuddin | 23a00b7 | 2008-08-25 13:58:25 +0000 | [diff] [blame] | 450 | PJ_ASSERT_RETURN(dec_fmtp_mode == 20 || dec_fmtp_mode == 30, |
| 451 | PJMEDIA_CODEC_EINMODE); |
| 452 | |
| 453 | /* Get encoder mode */ |
| 454 | for (i = 0; i < attr->setting.enc_fmtp.cnt; ++i) { |
| 455 | if (pj_stricmp(&attr->setting.enc_fmtp.param[i].name, &STR_MODE) == 0) |
| 456 | { |
Nanang Izzuddin | 873f3e4 | 2009-07-15 17:55:16 +0000 | [diff] [blame] | 457 | enc_fmtp_mode = (pj_uint16_t) |
Nanang Izzuddin | 23a00b7 | 2008-08-25 13:58:25 +0000 | [diff] [blame] | 458 | pj_strtoul(&attr->setting.enc_fmtp.param[i].val); |
| 459 | break; |
| 460 | } |
| 461 | } |
Benny Prijono | c585988 | 2006-07-31 15:25:14 +0000 | [diff] [blame] | 462 | |
Nanang Izzuddin | 873f3e4 | 2009-07-15 17:55:16 +0000 | [diff] [blame] | 463 | PJ_ASSERT_RETURN(enc_fmtp_mode==20 || enc_fmtp_mode==30, |
| 464 | PJMEDIA_CODEC_EINMODE); |
| 465 | |
| 466 | /* Both sides of a bi-directional session MUST use the same "mode" value. |
| 467 | * In this point, possible values are only 20 or 30, so when encoder and |
| 468 | * decoder modes are not same, just use the default mode, it is 30. |
Benny Prijono | c585988 | 2006-07-31 15:25:14 +0000 | [diff] [blame] | 469 | */ |
Nanang Izzuddin | 23a00b7 | 2008-08-25 13:58:25 +0000 | [diff] [blame] | 470 | if (enc_fmtp_mode != dec_fmtp_mode) { |
Nanang Izzuddin | 873f3e4 | 2009-07-15 17:55:16 +0000 | [diff] [blame] | 471 | enc_fmtp_mode = dec_fmtp_mode = DEFAULT_MODE; |
| 472 | PJ_LOG(4,(ilbc_codec->obj_name, |
| 473 | "Normalized iLBC encoder and decoder modes to %d", |
| 474 | DEFAULT_MODE)); |
Benny Prijono | 6865a3f | 2006-12-30 02:46:57 +0000 | [diff] [blame] | 475 | } |
| 476 | |
Nanang Izzuddin | 873f3e4 | 2009-07-15 17:55:16 +0000 | [diff] [blame] | 477 | /* Update some attributes based on negotiated mode. */ |
| 478 | attr->info.avg_bps = (dec_fmtp_mode == 30? 13333 : 15200); |
| 479 | attr->info.frm_ptime = dec_fmtp_mode; |
| 480 | |
| 481 | /* Create encoder */ |
Benny Prijono | fb1d2dd | 2010-11-03 07:33:07 +0000 | [diff] [blame^] | 482 | #if defined(PJMEDIA_ILBC_CODEC_USE_COREAUDIO)&& PJMEDIA_ILBC_CODEC_USE_COREAUDIO |
Sauw Ming | b83b3f3 | 2010-04-13 14:29:56 +0000 | [diff] [blame] | 483 | dstFormat.mFramesPerPacket = CLOCK_RATE * enc_fmtp_mode / 1000; |
| 484 | dstFormat.mBytesPerPacket = (enc_fmtp_mode == 20? 38 : 50); |
| 485 | |
| 486 | /* Use AudioFormat API to fill out the rest of the description */ |
| 487 | size = sizeof(dstFormat); |
| 488 | AudioFormatGetProperty(kAudioFormatProperty_FormatInfo, |
| 489 | 0, NULL, &size, &dstFormat); |
| 490 | |
| 491 | if (AudioConverterNew(&srcFormat, &dstFormat, &ilbc_codec->enc) != noErr) |
| 492 | return PJMEDIA_CODEC_EFAILED; |
| 493 | ilbc_codec->enc_frame_size = (enc_fmtp_mode == 20? 38 : 50); |
| 494 | #else |
Nanang Izzuddin | 23a00b7 | 2008-08-25 13:58:25 +0000 | [diff] [blame] | 495 | ilbc_codec->enc_frame_size = initEncode(&ilbc_codec->enc, enc_fmtp_mode); |
Sauw Ming | b83b3f3 | 2010-04-13 14:29:56 +0000 | [diff] [blame] | 496 | #endif |
Nanang Izzuddin | 23a00b7 | 2008-08-25 13:58:25 +0000 | [diff] [blame] | 497 | ilbc_codec->enc_samples_per_frame = CLOCK_RATE * enc_fmtp_mode / 1000; |
Benny Prijono | c585988 | 2006-07-31 15:25:14 +0000 | [diff] [blame] | 498 | ilbc_codec->enc_ready = PJ_TRUE; |
| 499 | |
| 500 | /* Create decoder */ |
Benny Prijono | fb1d2dd | 2010-11-03 07:33:07 +0000 | [diff] [blame^] | 501 | #if defined(PJMEDIA_ILBC_CODEC_USE_COREAUDIO)&& PJMEDIA_ILBC_CODEC_USE_COREAUDIO |
Sauw Ming | b83b3f3 | 2010-04-13 14:29:56 +0000 | [diff] [blame] | 502 | if (AudioConverterNew(&dstFormat, &srcFormat, &ilbc_codec->dec) != noErr) |
| 503 | return PJMEDIA_CODEC_EFAILED; |
| 504 | ilbc_codec->dec_samples_per_frame = CLOCK_RATE * dec_fmtp_mode / 1000; |
| 505 | #else |
Benny Prijono | c585988 | 2006-07-31 15:25:14 +0000 | [diff] [blame] | 506 | ilbc_codec->dec_samples_per_frame = initDecode(&ilbc_codec->dec, |
Nanang Izzuddin | 23a00b7 | 2008-08-25 13:58:25 +0000 | [diff] [blame] | 507 | dec_fmtp_mode, |
Benny Prijono | c585988 | 2006-07-31 15:25:14 +0000 | [diff] [blame] | 508 | attr->setting.penh); |
Sauw Ming | b83b3f3 | 2010-04-13 14:29:56 +0000 | [diff] [blame] | 509 | #endif |
Nanang Izzuddin | 873f3e4 | 2009-07-15 17:55:16 +0000 | [diff] [blame] | 510 | ilbc_codec->dec_frame_size = (dec_fmtp_mode == 20? 38 : 50); |
Benny Prijono | c585988 | 2006-07-31 15:25:14 +0000 | [diff] [blame] | 511 | ilbc_codec->dec_ready = PJ_TRUE; |
| 512 | |
| 513 | /* Save plc flags */ |
Benny Prijono | b94a6ab | 2006-12-26 21:18:11 +0000 | [diff] [blame] | 514 | ilbc_codec->plc_enabled = (attr->setting.plc != 0); |
Benny Prijono | c585988 | 2006-07-31 15:25:14 +0000 | [diff] [blame] | 515 | |
Benny Prijono | b94a6ab | 2006-12-26 21:18:11 +0000 | [diff] [blame] | 516 | /* Create silence detector. */ |
| 517 | ilbc_codec->vad_enabled = (attr->setting.vad != 0); |
| 518 | status = pjmedia_silence_det_create(ilbc_codec->pool, CLOCK_RATE, |
| 519 | ilbc_codec->enc_samples_per_frame, |
| 520 | &ilbc_codec->vad); |
| 521 | if (status != PJ_SUCCESS) |
| 522 | return status; |
Benny Prijono | c585988 | 2006-07-31 15:25:14 +0000 | [diff] [blame] | 523 | |
Benny Prijono | c6c0ed0 | 2007-01-20 05:18:14 +0000 | [diff] [blame] | 524 | /* Init last_tx (not necessary because of zalloc, but better |
| 525 | * be safe in case someone remove zalloc later. |
| 526 | */ |
| 527 | pj_set_timestamp32(&ilbc_codec->last_tx, 0, 0); |
| 528 | |
Benny Prijono | c585988 | 2006-07-31 15:25:14 +0000 | [diff] [blame] | 529 | PJ_LOG(5,(ilbc_codec->obj_name, |
Nanang Izzuddin | 873f3e4 | 2009-07-15 17:55:16 +0000 | [diff] [blame] | 530 | "iLBC codec opened, mode=%d", dec_fmtp_mode)); |
Benny Prijono | c585988 | 2006-07-31 15:25:14 +0000 | [diff] [blame] | 531 | |
| 532 | return PJ_SUCCESS; |
| 533 | } |
| 534 | |
| 535 | |
| 536 | /* |
| 537 | * Close codec. |
| 538 | */ |
| 539 | static pj_status_t ilbc_codec_close( pjmedia_codec *codec ) |
| 540 | { |
| 541 | struct ilbc_codec *ilbc_codec = (struct ilbc_codec*)codec; |
| 542 | |
| 543 | PJ_UNUSED_ARG(codec); |
| 544 | |
| 545 | PJ_LOG(5,(ilbc_codec->obj_name, "iLBC codec closed")); |
| 546 | |
| 547 | return PJ_SUCCESS; |
| 548 | } |
| 549 | |
Benny Prijono | b94a6ab | 2006-12-26 21:18:11 +0000 | [diff] [blame] | 550 | /* |
| 551 | * Modify codec settings. |
| 552 | */ |
| 553 | static pj_status_t ilbc_codec_modify(pjmedia_codec *codec, |
| 554 | const pjmedia_codec_param *attr ) |
| 555 | { |
| 556 | struct ilbc_codec *ilbc_codec = (struct ilbc_codec*)codec; |
| 557 | |
| 558 | ilbc_codec->plc_enabled = (attr->setting.plc != 0); |
| 559 | ilbc_codec->vad_enabled = (attr->setting.vad != 0); |
| 560 | |
| 561 | return PJ_SUCCESS; |
| 562 | } |
Benny Prijono | c585988 | 2006-07-31 15:25:14 +0000 | [diff] [blame] | 563 | |
| 564 | /* |
| 565 | * Get frames in the packet. |
| 566 | */ |
| 567 | static pj_status_t ilbc_codec_parse( pjmedia_codec *codec, |
| 568 | void *pkt, |
| 569 | pj_size_t pkt_size, |
| 570 | const pj_timestamp *ts, |
| 571 | unsigned *frame_cnt, |
| 572 | pjmedia_frame frames[]) |
| 573 | { |
| 574 | struct ilbc_codec *ilbc_codec = (struct ilbc_codec*)codec; |
| 575 | unsigned count; |
| 576 | |
| 577 | PJ_ASSERT_RETURN(frame_cnt, PJ_EINVAL); |
| 578 | |
| 579 | count = 0; |
| 580 | while (pkt_size >= ilbc_codec->dec_frame_size && count < *frame_cnt) { |
| 581 | frames[count].type = PJMEDIA_FRAME_TYPE_AUDIO; |
| 582 | frames[count].buf = pkt; |
| 583 | frames[count].size = ilbc_codec->dec_frame_size; |
| 584 | frames[count].timestamp.u64 = ts->u64 + count * |
Sauw Ming | b83b3f3 | 2010-04-13 14:29:56 +0000 | [diff] [blame] | 585 | ilbc_codec->dec_samples_per_frame; |
Benny Prijono | c585988 | 2006-07-31 15:25:14 +0000 | [diff] [blame] | 586 | |
| 587 | pkt = ((char*)pkt) + ilbc_codec->dec_frame_size; |
| 588 | pkt_size -= ilbc_codec->dec_frame_size; |
| 589 | |
| 590 | ++count; |
| 591 | } |
| 592 | |
| 593 | *frame_cnt = count; |
| 594 | return PJ_SUCCESS; |
| 595 | } |
| 596 | |
Benny Prijono | fb1d2dd | 2010-11-03 07:33:07 +0000 | [diff] [blame^] | 597 | #if defined(PJMEDIA_ILBC_CODEC_USE_COREAUDIO)&& PJMEDIA_ILBC_CODEC_USE_COREAUDIO |
Sauw Ming | b83b3f3 | 2010-04-13 14:29:56 +0000 | [diff] [blame] | 598 | static OSStatus encodeDataProc ( |
| 599 | AudioConverterRef inAudioConverter, |
| 600 | UInt32 *ioNumberDataPackets, |
| 601 | AudioBufferList *ioData, |
| 602 | AudioStreamPacketDescription **outDataPacketDescription, |
| 603 | void *inUserData |
| 604 | ) |
| 605 | { |
| 606 | struct ilbc_codec *ilbc_codec = (struct ilbc_codec*)inUserData; |
| 607 | |
| 608 | /* Initialize in case of failure */ |
| 609 | ioData->mBuffers[0].mData = NULL; |
| 610 | ioData->mBuffers[0].mDataByteSize = 0; |
| 611 | |
| 612 | if (ilbc_codec->enc_total_packets < *ioNumberDataPackets) { |
| 613 | *ioNumberDataPackets = ilbc_codec->enc_total_packets; |
| 614 | } |
| 615 | |
| 616 | if (*ioNumberDataPackets) { |
| 617 | ioData->mBuffers[0].mData = ilbc_codec->enc_buffer + |
| 618 | ilbc_codec->enc_buffer_offset; |
| 619 | ioData->mBuffers[0].mDataByteSize = *ioNumberDataPackets * |
| 620 | ilbc_codec->enc_samples_per_frame |
| 621 | << 1; |
| 622 | ilbc_codec->enc_buffer_offset += ioData->mBuffers[0].mDataByteSize; |
| 623 | } |
| 624 | |
| 625 | ilbc_codec->enc_total_packets -= *ioNumberDataPackets; |
| 626 | return noErr; |
| 627 | } |
| 628 | |
| 629 | static OSStatus decodeDataProc ( |
| 630 | AudioConverterRef inAudioConverter, |
| 631 | UInt32 *ioNumberDataPackets, |
| 632 | AudioBufferList *ioData, |
| 633 | AudioStreamPacketDescription **outDataPacketDescription, |
| 634 | void *inUserData |
| 635 | ) |
| 636 | { |
| 637 | struct ilbc_codec *ilbc_codec = (struct ilbc_codec*)inUserData; |
| 638 | |
| 639 | /* Initialize in case of failure */ |
| 640 | ioData->mBuffers[0].mData = NULL; |
| 641 | ioData->mBuffers[0].mDataByteSize = 0; |
| 642 | |
| 643 | if (ilbc_codec->dec_total_packets < *ioNumberDataPackets) { |
| 644 | *ioNumberDataPackets = ilbc_codec->dec_total_packets; |
| 645 | } |
| 646 | |
| 647 | if (*ioNumberDataPackets) { |
| 648 | ioData->mBuffers[0].mData = ilbc_codec->dec_buffer + |
| 649 | ilbc_codec->dec_buffer_offset; |
| 650 | ioData->mBuffers[0].mDataByteSize = *ioNumberDataPackets * |
| 651 | ilbc_codec->dec_frame_size; |
| 652 | ilbc_codec->dec_buffer_offset += ioData->mBuffers[0].mDataByteSize; |
| 653 | } |
| 654 | |
| 655 | ilbc_codec->dec_total_packets -= *ioNumberDataPackets; |
| 656 | return noErr; |
| 657 | } |
| 658 | #endif |
| 659 | |
Benny Prijono | c585988 | 2006-07-31 15:25:14 +0000 | [diff] [blame] | 660 | /* |
| 661 | * Encode frame. |
| 662 | */ |
| 663 | static pj_status_t ilbc_codec_encode(pjmedia_codec *codec, |
| 664 | const struct pjmedia_frame *input, |
| 665 | unsigned output_buf_len, |
| 666 | struct pjmedia_frame *output) |
| 667 | { |
| 668 | struct ilbc_codec *ilbc_codec = (struct ilbc_codec*)codec; |
Nanang Izzuddin | 3aef5e1 | 2008-06-05 10:50:40 +0000 | [diff] [blame] | 669 | pj_int16_t *pcm_in; |
| 670 | unsigned nsamples; |
Benny Prijono | fb1d2dd | 2010-11-03 07:33:07 +0000 | [diff] [blame^] | 671 | #if defined(PJMEDIA_ILBC_CODEC_USE_COREAUDIO)&& PJMEDIA_ILBC_CODEC_USE_COREAUDIO |
Sauw Ming | b83b3f3 | 2010-04-13 14:29:56 +0000 | [diff] [blame] | 672 | UInt32 npackets; |
| 673 | OSStatus err; |
| 674 | AudioBufferList theABL; |
| 675 | #endif |
Benny Prijono | c585988 | 2006-07-31 15:25:14 +0000 | [diff] [blame] | 676 | |
Nanang Izzuddin | 3aef5e1 | 2008-06-05 10:50:40 +0000 | [diff] [blame] | 677 | pj_assert(ilbc_codec && input && output); |
Benny Prijono | c585988 | 2006-07-31 15:25:14 +0000 | [diff] [blame] | 678 | |
Nanang Izzuddin | 3aef5e1 | 2008-06-05 10:50:40 +0000 | [diff] [blame] | 679 | pcm_in = (pj_int16_t*)input->buf; |
| 680 | nsamples = input->size >> 1; |
Benny Prijono | c585988 | 2006-07-31 15:25:14 +0000 | [diff] [blame] | 681 | |
Nanang Izzuddin | 3aef5e1 | 2008-06-05 10:50:40 +0000 | [diff] [blame] | 682 | PJ_ASSERT_RETURN(nsamples % ilbc_codec->enc_samples_per_frame == 0, |
| 683 | PJMEDIA_CODEC_EPCMFRMINLEN); |
| 684 | PJ_ASSERT_RETURN(output_buf_len >= ilbc_codec->enc_frame_size * nsamples / |
| 685 | ilbc_codec->enc_samples_per_frame, |
| 686 | PJMEDIA_CODEC_EFRMTOOSHORT); |
Benny Prijono | c585988 | 2006-07-31 15:25:14 +0000 | [diff] [blame] | 687 | |
| 688 | /* Detect silence */ |
Benny Prijono | b94a6ab | 2006-12-26 21:18:11 +0000 | [diff] [blame] | 689 | if (ilbc_codec->vad_enabled) { |
Benny Prijono | c585988 | 2006-07-31 15:25:14 +0000 | [diff] [blame] | 690 | pj_bool_t is_silence; |
Benny Prijono | c6c0ed0 | 2007-01-20 05:18:14 +0000 | [diff] [blame] | 691 | pj_int32_t silence_period; |
| 692 | |
| 693 | silence_period = pj_timestamp_diff32(&ilbc_codec->last_tx, |
| 694 | &input->timestamp); |
Benny Prijono | c585988 | 2006-07-31 15:25:14 +0000 | [diff] [blame] | 695 | |
| 696 | is_silence = pjmedia_silence_det_detect(ilbc_codec->vad, |
Benny Prijono | a1e6968 | 2007-05-11 15:14:34 +0000 | [diff] [blame] | 697 | (const pj_int16_t*)input->buf, |
Benny Prijono | c6c0ed0 | 2007-01-20 05:18:14 +0000 | [diff] [blame] | 698 | (input->size >> 1), |
Benny Prijono | c585988 | 2006-07-31 15:25:14 +0000 | [diff] [blame] | 699 | NULL); |
Benny Prijono | c6c0ed0 | 2007-01-20 05:18:14 +0000 | [diff] [blame] | 700 | if (is_silence && |
Nanang Izzuddin | 4ff93f4 | 2009-06-13 15:28:37 +0000 | [diff] [blame] | 701 | (PJMEDIA_CODEC_MAX_SILENCE_PERIOD == -1 || |
| 702 | silence_period < PJMEDIA_CODEC_MAX_SILENCE_PERIOD*8000/1000)) |
Benny Prijono | c6c0ed0 | 2007-01-20 05:18:14 +0000 | [diff] [blame] | 703 | { |
Benny Prijono | c585988 | 2006-07-31 15:25:14 +0000 | [diff] [blame] | 704 | output->type = PJMEDIA_FRAME_TYPE_NONE; |
| 705 | output->buf = NULL; |
| 706 | output->size = 0; |
Benny Prijono | c6c0ed0 | 2007-01-20 05:18:14 +0000 | [diff] [blame] | 707 | output->timestamp = input->timestamp; |
Benny Prijono | c585988 | 2006-07-31 15:25:14 +0000 | [diff] [blame] | 708 | return PJ_SUCCESS; |
Benny Prijono | c6c0ed0 | 2007-01-20 05:18:14 +0000 | [diff] [blame] | 709 | } else { |
| 710 | ilbc_codec->last_tx = input->timestamp; |
Benny Prijono | c585988 | 2006-07-31 15:25:14 +0000 | [diff] [blame] | 711 | } |
| 712 | } |
| 713 | |
Nanang Izzuddin | 3aef5e1 | 2008-06-05 10:50:40 +0000 | [diff] [blame] | 714 | /* Encode */ |
| 715 | output->size = 0; |
Benny Prijono | fb1d2dd | 2010-11-03 07:33:07 +0000 | [diff] [blame^] | 716 | #if defined(PJMEDIA_ILBC_CODEC_USE_COREAUDIO)&& PJMEDIA_ILBC_CODEC_USE_COREAUDIO |
Sauw Ming | b83b3f3 | 2010-04-13 14:29:56 +0000 | [diff] [blame] | 717 | npackets = nsamples / ilbc_codec->enc_samples_per_frame; |
| 718 | |
| 719 | theABL.mNumberBuffers = 1; |
| 720 | theABL.mBuffers[0].mNumberChannels = 1; |
| 721 | theABL.mBuffers[0].mDataByteSize = output_buf_len; |
| 722 | theABL.mBuffers[0].mData = output->buf; |
| 723 | |
| 724 | ilbc_codec->enc_total_packets = npackets; |
| 725 | ilbc_codec->enc_buffer = (char *)input->buf; |
| 726 | ilbc_codec->enc_buffer_offset = 0; |
| 727 | |
| 728 | err = AudioConverterFillComplexBuffer(ilbc_codec->enc, encodeDataProc, |
| 729 | ilbc_codec, &npackets, |
| 730 | &theABL, NULL); |
| 731 | if (err == noErr) { |
| 732 | output->size = npackets * ilbc_codec->enc_frame_size; |
| 733 | } |
| 734 | #else |
Nanang Izzuddin | 3aef5e1 | 2008-06-05 10:50:40 +0000 | [diff] [blame] | 735 | while (nsamples >= ilbc_codec->enc_samples_per_frame) { |
| 736 | unsigned i; |
| 737 | |
| 738 | /* Convert to float */ |
| 739 | for (i=0; i<ilbc_codec->enc_samples_per_frame; ++i) { |
| 740 | ilbc_codec->enc_block[i] = (float) (*pcm_in++); |
| 741 | } |
| 742 | |
| 743 | iLBC_encode((unsigned char *)output->buf + output->size, |
| 744 | ilbc_codec->enc_block, |
| 745 | &ilbc_codec->enc); |
| 746 | |
| 747 | output->size += ilbc_codec->enc.no_of_bytes; |
| 748 | nsamples -= ilbc_codec->enc_samples_per_frame; |
Benny Prijono | c585988 | 2006-07-31 15:25:14 +0000 | [diff] [blame] | 749 | } |
Sauw Ming | b83b3f3 | 2010-04-13 14:29:56 +0000 | [diff] [blame] | 750 | #endif |
Benny Prijono | c585988 | 2006-07-31 15:25:14 +0000 | [diff] [blame] | 751 | |
Benny Prijono | c585988 | 2006-07-31 15:25:14 +0000 | [diff] [blame] | 752 | output->type = PJMEDIA_FRAME_TYPE_AUDIO; |
Benny Prijono | c6c0ed0 | 2007-01-20 05:18:14 +0000 | [diff] [blame] | 753 | output->timestamp = input->timestamp; |
Benny Prijono | c585988 | 2006-07-31 15:25:14 +0000 | [diff] [blame] | 754 | |
| 755 | return PJ_SUCCESS; |
| 756 | } |
| 757 | |
| 758 | /* |
| 759 | * Decode frame. |
| 760 | */ |
| 761 | static pj_status_t ilbc_codec_decode(pjmedia_codec *codec, |
| 762 | const struct pjmedia_frame *input, |
| 763 | unsigned output_buf_len, |
| 764 | struct pjmedia_frame *output) |
| 765 | { |
| 766 | struct ilbc_codec *ilbc_codec = (struct ilbc_codec*)codec; |
Benny Prijono | fb1d2dd | 2010-11-03 07:33:07 +0000 | [diff] [blame^] | 767 | #if defined(PJMEDIA_ILBC_CODEC_USE_COREAUDIO)&& PJMEDIA_ILBC_CODEC_USE_COREAUDIO |
Sauw Ming | b83b3f3 | 2010-04-13 14:29:56 +0000 | [diff] [blame] | 768 | UInt32 npackets; |
| 769 | OSStatus err; |
| 770 | AudioBufferList theABL; |
| 771 | #else |
Benny Prijono | c585988 | 2006-07-31 15:25:14 +0000 | [diff] [blame] | 772 | unsigned i; |
Sauw Ming | b83b3f3 | 2010-04-13 14:29:56 +0000 | [diff] [blame] | 773 | #endif |
Benny Prijono | c585988 | 2006-07-31 15:25:14 +0000 | [diff] [blame] | 774 | |
| 775 | pj_assert(ilbc_codec != NULL); |
| 776 | PJ_ASSERT_RETURN(input && output, PJ_EINVAL); |
| 777 | |
Benny Prijono | c6c0ed0 | 2007-01-20 05:18:14 +0000 | [diff] [blame] | 778 | if (output_buf_len < (ilbc_codec->dec_samples_per_frame << 1)) |
Benny Prijono | c585988 | 2006-07-31 15:25:14 +0000 | [diff] [blame] | 779 | return PJMEDIA_CODEC_EPCMTOOSHORT; |
| 780 | |
| 781 | if (input->size != ilbc_codec->dec_frame_size) |
| 782 | return PJMEDIA_CODEC_EFRMINLEN; |
| 783 | |
| 784 | /* Decode to temporary buffer */ |
Benny Prijono | fb1d2dd | 2010-11-03 07:33:07 +0000 | [diff] [blame^] | 785 | #if defined(PJMEDIA_ILBC_CODEC_USE_COREAUDIO)&& PJMEDIA_ILBC_CODEC_USE_COREAUDIO |
Sauw Ming | b83b3f3 | 2010-04-13 14:29:56 +0000 | [diff] [blame] | 786 | npackets = input->size / ilbc_codec->dec_frame_size * |
| 787 | ilbc_codec->dec_samples_per_frame; |
| 788 | |
| 789 | theABL.mNumberBuffers = 1; |
| 790 | theABL.mBuffers[0].mNumberChannels = 1; |
| 791 | theABL.mBuffers[0].mDataByteSize = output_buf_len; |
| 792 | theABL.mBuffers[0].mData = output->buf; |
| 793 | |
| 794 | ilbc_codec->dec_total_packets = npackets; |
| 795 | ilbc_codec->dec_buffer = (char *)input->buf; |
| 796 | ilbc_codec->dec_buffer_offset = 0; |
| 797 | |
| 798 | err = AudioConverterFillComplexBuffer(ilbc_codec->dec, decodeDataProc, |
| 799 | ilbc_codec, &npackets, |
| 800 | &theABL, NULL); |
| 801 | if (err == noErr) { |
| 802 | output->size = npackets * (ilbc_codec->dec_samples_per_frame << 1); |
| 803 | } |
| 804 | #else |
Benny Prijono | a1e6968 | 2007-05-11 15:14:34 +0000 | [diff] [blame] | 805 | iLBC_decode(ilbc_codec->dec_block, (unsigned char*) input->buf, |
Benny Prijono | c585988 | 2006-07-31 15:25:14 +0000 | [diff] [blame] | 806 | &ilbc_codec->dec, 1); |
| 807 | |
| 808 | /* Convert decodec samples from float to short */ |
| 809 | for (i=0; i<ilbc_codec->dec_samples_per_frame; ++i) { |
| 810 | ((short*)output->buf)[i] = (short)ilbc_codec->dec_block[i]; |
| 811 | } |
Benny Prijono | c6c0ed0 | 2007-01-20 05:18:14 +0000 | [diff] [blame] | 812 | output->size = (ilbc_codec->dec_samples_per_frame << 1); |
Sauw Ming | b83b3f3 | 2010-04-13 14:29:56 +0000 | [diff] [blame] | 813 | #endif |
| 814 | |
Benny Prijono | c585988 | 2006-07-31 15:25:14 +0000 | [diff] [blame] | 815 | output->type = PJMEDIA_FRAME_TYPE_AUDIO; |
Benny Prijono | c6c0ed0 | 2007-01-20 05:18:14 +0000 | [diff] [blame] | 816 | output->timestamp = input->timestamp; |
Benny Prijono | c585988 | 2006-07-31 15:25:14 +0000 | [diff] [blame] | 817 | |
| 818 | return PJ_SUCCESS; |
| 819 | } |
| 820 | |
| 821 | |
| 822 | /* |
| 823 | * Recover lost frame. |
| 824 | */ |
| 825 | static pj_status_t ilbc_codec_recover(pjmedia_codec *codec, |
| 826 | unsigned output_buf_len, |
| 827 | struct pjmedia_frame *output) |
| 828 | { |
| 829 | struct ilbc_codec *ilbc_codec = (struct ilbc_codec*)codec; |
Benny Prijono | fb1d2dd | 2010-11-03 07:33:07 +0000 | [diff] [blame^] | 830 | #if defined(PJMEDIA_ILBC_CODEC_USE_COREAUDIO)&& PJMEDIA_ILBC_CODEC_USE_COREAUDIO |
Sauw Ming | b83b3f3 | 2010-04-13 14:29:56 +0000 | [diff] [blame] | 831 | UInt32 npackets; |
| 832 | OSStatus err; |
| 833 | AudioBufferList theABL; |
| 834 | #else |
Benny Prijono | c585988 | 2006-07-31 15:25:14 +0000 | [diff] [blame] | 835 | unsigned i; |
Sauw Ming | b83b3f3 | 2010-04-13 14:29:56 +0000 | [diff] [blame] | 836 | #endif |
Benny Prijono | c585988 | 2006-07-31 15:25:14 +0000 | [diff] [blame] | 837 | |
| 838 | pj_assert(ilbc_codec != NULL); |
| 839 | PJ_ASSERT_RETURN(output, PJ_EINVAL); |
| 840 | |
Benny Prijono | c6c0ed0 | 2007-01-20 05:18:14 +0000 | [diff] [blame] | 841 | if (output_buf_len < (ilbc_codec->dec_samples_per_frame << 1)) |
Benny Prijono | c585988 | 2006-07-31 15:25:14 +0000 | [diff] [blame] | 842 | return PJMEDIA_CODEC_EPCMTOOSHORT; |
| 843 | |
| 844 | /* Decode to temporary buffer */ |
Benny Prijono | fb1d2dd | 2010-11-03 07:33:07 +0000 | [diff] [blame^] | 845 | #if defined(PJMEDIA_ILBC_CODEC_USE_COREAUDIO)&& PJMEDIA_ILBC_CODEC_USE_COREAUDIO |
Sauw Ming | b83b3f3 | 2010-04-13 14:29:56 +0000 | [diff] [blame] | 846 | npackets = 1; |
| 847 | |
| 848 | theABL.mNumberBuffers = 1; |
| 849 | theABL.mBuffers[0].mNumberChannels = 1; |
| 850 | theABL.mBuffers[0].mDataByteSize = output_buf_len; |
| 851 | theABL.mBuffers[0].mData = output->buf; |
| 852 | |
| 853 | ilbc_codec->dec_total_packets = npackets; |
| 854 | ilbc_codec->dec_buffer_offset = 0; |
| 855 | if (ilbc_codec->dec_buffer) { |
| 856 | err = AudioConverterFillComplexBuffer(ilbc_codec->dec, decodeDataProc, |
| 857 | ilbc_codec, &npackets, |
| 858 | &theABL, NULL); |
| 859 | if (err == noErr) { |
| 860 | output->size = npackets * |
| 861 | (ilbc_codec->dec_samples_per_frame << 1); |
| 862 | } |
| 863 | } else { |
| 864 | output->size = npackets * (ilbc_codec->dec_samples_per_frame << 1); |
| 865 | pj_bzero(output->buf, output->size); |
| 866 | } |
| 867 | #else |
Benny Prijono | c585988 | 2006-07-31 15:25:14 +0000 | [diff] [blame] | 868 | iLBC_decode(ilbc_codec->dec_block, NULL, &ilbc_codec->dec, 0); |
| 869 | |
| 870 | /* Convert decodec samples from float to short */ |
| 871 | for (i=0; i<ilbc_codec->dec_samples_per_frame; ++i) { |
| 872 | ((short*)output->buf)[i] = (short)ilbc_codec->dec_block[i]; |
| 873 | } |
Benny Prijono | c6c0ed0 | 2007-01-20 05:18:14 +0000 | [diff] [blame] | 874 | output->size = (ilbc_codec->dec_samples_per_frame << 1); |
Sauw Ming | b83b3f3 | 2010-04-13 14:29:56 +0000 | [diff] [blame] | 875 | #endif |
Benny Prijono | c585988 | 2006-07-31 15:25:14 +0000 | [diff] [blame] | 876 | output->type = PJMEDIA_FRAME_TYPE_AUDIO; |
| 877 | |
| 878 | return PJ_SUCCESS; |
| 879 | } |
| 880 | |
| 881 | |
| 882 | #endif /* PJMEDIA_HAS_ILBC_CODEC */ |