libavcodec/amr.c

   1 /*
   2  * AMR Audio decoder stub
   3  * Copyright (c) 2003 the ffmpeg project
   4  *
   5  * This file is part of FFmpeg.
   6  *
   7  * FFmpeg is free software; you can redistribute it and/or
   8  * modify it under the terms of the GNU Lesser General Public
   9  * License as published by the Free Software Foundation; either
  10  * version 2.1 of the License, or (at your option) any later version.
  11  *
  12  * FFmpeg is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * Lesser General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU Lesser General Public
  18  * License along with FFmpeg; if not, write to the Free Software
  19  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  20  */
  21
  22  /** @file
  23  * Adaptive Multi-Rate (AMR) Audio decoder stub.
  24  *
  25  * This code implements both an AMR-NarrowBand (AMR-NB) and an AMR-WideBand
  26  * (AMR-WB) audio encoder/decoder through external reference code from
  27  * http://www.3gpp.org/. The license of the code from 3gpp is unclear so you
  28  * have to download the code separately. Two versions exists: One fixed-point
  29  * and one with floats. For some reason the float-encoder is significant faster
  30  * at least on a P4 1.5GHz (0.9s instead of 9.9s on a 30s audio clip at MR102).
  31  * Both float and fixed point are supported for AMR-NB, but only float for
  32  * AMR-WB.
  33  *
  34  * \section AMR-NB
  35  *
  36  * \subsection Float
  37  * The float version (default) can be downloaded from:
  38  * http://www.3gpp.org/ftp/Specs/archive/26_series/26.104/26104-610.zip
  39  * Extract the source into \c "ffmpeg/libavcodec/amr_float".
  40  * Enable it by passing \c "--enable-amr-nb" to \c "./configure".
  41  *
  42  * \subsection Fixed-point
  43  * The fixed-point (TS26.073) can be downloaded from:
  44  * http://www.3gpp.org/ftp/Specs/archive/26_series/26.073/26073-510.zip.
  45  * Extract the source into \c "ffmpeg/libavcodec/amr".
  46  * Enable it by passing \c "--enable-amr-nb-fixed" to \c "./configure".
  47  *
  48  * \subsection Specification
  49  * The specification for AMR-NB can be found in TS 26.071
  50  * (http://www.3gpp.org/ftp/Specs/html-info/26071.htm) and some other
  51  * info at http://www.3gpp.org/ftp/Specs/html-info/26-series.htm.
  52  *
  53  * \section AMR-WB
  54  * \subsection Float
  55  * The reference code can be downloaded from:
  56  * http://www.3gpp.org/ftp/Specs/archive/26_series/26.204/26204-600.zip
  57  * It should be extracted to \c "ffmpeg/libavcodec/amrwb_float".
  58  * Enable it by passing \c "--enable-amr-wb" to \c "./configure".
  59  *
  60  * \subsection Fixed-point
  61  * If someone wants to use the fixed point version it can be downloaded from:
  62  * http://www.3gpp.org/ftp/Specs/archive/26_series/26.173/26173-571.zip.
  63  *
  64  * \subsection Specification
  65  * The specification for AMR-WB can be found in TS 26.171
  66  * (http://www.3gpp.org/ftp/Specs/html-info/26171.htm) and some other
  67  * info at http://www.3gpp.org/ftp/Specs/html-info/26-series.htm.
  68  *
  69  */
  70
  71 #include "avcodec.h"
  72
  73 #ifdef CONFIG_AMR_NB_FIXED
  74
  75 #define MMS_IO
  76
  77 #include "amr/sp_dec.h"
  78 #include "amr/d_homing.h"
  79 #include "amr/typedef.h"
  80 #include "amr/sp_enc.h"
  81 #include "amr/sid_sync.h"
  82 #include "amr/e_homing.h"
  83
  84 #else
  85 #include "amr_float/interf_dec.h"
  86 #include "amr_float/interf_enc.h"
  87 #endif
  88
  89 /* Common code for fixed and float version*/
  90 typedef struct AMR_bitrates
  91 {
  92     int rate;
  93     enum Mode mode;
  94 } AMR_bitrates;
  95
  96 /* Match desired bitrate */
  97 static int getBitrateMode(int bitrate)
  98 {
  99     /* make the correspondance between bitrate and mode */
 100     AMR_bitrates rates[]={ {4750,MR475},
 101                            {5150,MR515},
 102                            {5900,MR59},
 103                            {6700,MR67},
 104                            {7400,MR74},
 105                            {7950,MR795},
 106                            {10200,MR102},
 107                            {12200,MR122},
 108                          };
 109     int i;
 110
 111     for(i=0;i<8;i++)
 112     {
 113         if(rates[i].rate==bitrate)
 114         {
 115             return(rates[i].mode);
 116         }
 117     }
 118     /* no bitrate matching, return an error */
 119     return -1;
 120 }
 121
 122 static void amr_decode_fix_avctx(AVCodecContext * avctx)
 123 {
 124     const int is_amr_wb = 1 + (avctx->codec_id == CODEC_ID_AMR_WB);
 125
 126     if(avctx->sample_rate == 0)
 127     {
 128         avctx->sample_rate = 8000 * is_amr_wb;
 129     }
 130
 131     if(avctx->channels == 0)
 132     {
 133         avctx->channels = 1;
 134     }
 135
 136     avctx->frame_size = 160 * is_amr_wb;
 137 }
 138
 139 #ifdef CONFIG_AMR_NB_FIXED
 140 /* fixed point version*/
 141 /* frame size in serial bitstream file (frame type + serial stream + flags) */
 142 #define SERIAL_FRAMESIZE (1+MAX_SERIAL_SIZE+5)
 143
 144 typedef struct AMRContext {
 145     int frameCount;
 146     Speech_Decode_FrameState *speech_decoder_state;
 147     enum RXFrameType rx_type;
 148     enum Mode mode;
 149     Word16 reset_flag;
 150     Word16 reset_flag_old;
 151
 152     int enc_bitrate;
 153     Speech_Encode_FrameState *enstate;
 154     sid_syncState *sidstate;
 155     enum TXFrameType tx_frametype;
 156 } AMRContext;
 157
 158 static int amr_nb_decode_init(AVCodecContext * avctx)
 159 {
 160     AMRContext *s = avctx->priv_data;
 161
 162     s->frameCount=0;
 163     s->speech_decoder_state=NULL;
 164     s->rx_type = (enum RXFrameType)0;
 165     s->mode= (enum Mode)0;
 166     s->reset_flag=0;
 167     s->reset_flag_old=1;
 168
 169     if(Speech_Decode_Frame_init(&s->speech_decoder_state, "Decoder"))
 170     {
 171         av_log(avctx, AV_LOG_ERROR, "Speech_Decode_Frame_init error\n");
 172         return -1;
 173     }
 174
 175     amr_decode_fix_avctx(avctx);
 176
 177     if(avctx->channels > 1)
 178     {
 179         av_log(avctx, AV_LOG_ERROR, "amr_nb: multichannel decoding not supported\n");
 180         return -1;
 181     }
 182
 183     return 0;
 184 }
 185
 186 static int amr_nb_encode_init(AVCodecContext * avctx)
 187 {
 188     AMRContext *s = avctx->priv_data;
 189
 190     s->frameCount=0;
 191     s->speech_decoder_state=NULL;
 192     s->rx_type = (enum RXFrameType)0;
 193     s->mode= (enum Mode)0;
 194     s->reset_flag=0;
 195     s->reset_flag_old=1;
 196
 197     if(avctx->sample_rate!=8000)
 198     {
 199         av_log(avctx, AV_LOG_ERROR, "Only 8000Hz sample rate supported\n");
 200         return -1;
 201     }
 202
 203     if(avctx->channels!=1)
 204     {
 205         av_log(avctx, AV_LOG_ERROR, "Only mono supported\n");
 206         return -1;
 207     }
 208
 209     avctx->frame_size=160;
 210     avctx->coded_frame= avcodec_alloc_frame();
 211
 212     if(Speech_Encode_Frame_init(&s->enstate, 0, "encoder") || sid_sync_init (&s->sidstate))
 213     {
 214         av_log(avctx, AV_LOG_ERROR, "Speech_Encode_Frame_init error\n");
 215         return -1;
 216     }
 217
 218     if((s->enc_bitrate=getBitrateMode(avctx->bit_rate))<0)
 219     {
 220         av_log(avctx, AV_LOG_ERROR, "bitrate not supported\n");
 221         return -1;
 222     }
 223
 224     return 0;
 225 }
 226
 227 static int amr_nb_encode_close(AVCodecContext * avctx)
 228 {
 229     AMRContext *s = avctx->priv_data;
 230
 231     Speech_Encode_Frame_exit(&s->enstate);
 232     sid_sync_exit (&s->sidstate);
 233     av_freep(&avctx->coded_frame);
 234     return 0;
 235 }
 236
 237 static int amr_nb_decode_close(AVCodecContext * avctx)
 238 {
 239     AMRContext *s = avctx->priv_data;
 240
 241     Speech_Decode_Frame_exit(&s->speech_decoder_state);
 242     return 0;
 243 }
 244
 245 static int amr_nb_decode_frame(AVCodecContext * avctx,
 246             void *data, int *data_size,
 247             uint8_t * buf, int buf_size)
 248 {
 249     AMRContext *s = avctx->priv_data;
 250     uint8_t*amrData=buf;
 251     int offset=0;
 252     UWord8 toc, q, ft;
 253     Word16 serial[SERIAL_FRAMESIZE];   /* coded bits */
 254     Word16 *synth;
 255     UWord8 *packed_bits;
 256     static Word16 packed_size[16] = {12, 13, 15, 17, 19, 20, 26, 31, 5, 0, 0, 0, 0, 0, 0, 0};
 257     int i;
 258
 259     //printf("amr_decode_frame data_size=%i buf=0x%X buf_size=%d frameCount=%d!!\n",*data_size,buf,buf_size,s->frameCount);
 260
 261     synth=data;
 262
 263         toc=amrData[offset];
 264         /* read rest of the frame based on ToC byte */
 265         q  = (toc >> 2) & 0x01;
 266         ft = (toc >> 3) & 0x0F;
 267
 268         //printf("offset=%d, packet_size=%d amrData= 0x%X %X %X %X\n",offset,packed_size[ft],amrData[offset],amrData[offset+1],amrData[offset+2],amrData[offset+3]);
 269
 270         offset++;
 271
 272         packed_bits=amrData+offset;
 273
 274         offset+=packed_size[ft];
 275
 276         //Unsort and unpack bits
 277         s->rx_type = UnpackBits(q, ft, packed_bits, &s->mode, &serial[1]);
 278
 279         //We have a new frame
 280         s->frameCount++;
 281
 282         if (s->rx_type == RX_NO_DATA)
 283         {
 284             s->mode = s->speech_decoder_state->prev_mode;
 285         }
 286         else {
 287             s->speech_decoder_state->prev_mode = s->mode;
 288         }
 289
 290         /* if homed: check if this frame is another homing frame */
 291         if (s->reset_flag_old == 1)
 292         {
 293             /* only check until end of first subframe */
 294             s->reset_flag = decoder_homing_frame_test_first(&serial[1], s->mode);
 295         }
 296         /* produce encoder homing frame if homed & input=decoder homing frame */
 297         if ((s->reset_flag != 0) && (s->reset_flag_old != 0))
 298         {
 299             for (i = 0; i < L_FRAME; i++)
 300             {
 301                 synth[i] = EHF_MASK;
 302             }
 303         }
 304         else
 305         {
 306             /* decode frame */
 307             Speech_Decode_Frame(s->speech_decoder_state, s->mode, &serial[1], s->rx_type, synth);
 308         }
 309
 310         //Each AMR-frame results in 160 16-bit samples
 311         *data_size+=160*2;
 312         synth+=160;
 313
 314         /* if not homed: check whether current frame is a homing frame */
 315         if (s->reset_flag_old == 0)
 316         {
 317             /* check whole frame */
 318             s->reset_flag = decoder_homing_frame_test(&serial[1], s->mode);
 319         }
 320         /* reset decoder if current frame is a homing frame */
 321         if (s->reset_flag != 0)
 322         {
 323             Speech_Decode_Frame_reset(s->speech_decoder_state);
 324         }
 325         s->reset_flag_old = s->reset_flag;
 326
 327     return offset;
 328 }
 329
 330
 331 static int amr_nb_encode_frame(AVCodecContext *avctx,
 332                             unsigned char *frame/*out*/, int buf_size, void *data/*in*/)
 333 {
 334     short serial_data[250] = {0};
 335     AMRContext *s = avctx->priv_data;
 336     int written;
 337
 338     s->reset_flag = encoder_homing_frame_test(data);
 339
 340     Speech_Encode_Frame(s->enstate, s->enc_bitrate, data, &serial_data[1], &s->mode);
 341
 342     /* add frame type and mode */
 343     sid_sync (s->sidstate, s->mode, &s->tx_frametype);
 344
 345     written = PackBits(s->mode, s->enc_bitrate, s->tx_frametype, &serial_data[1], frame);
 346
 347     if (s->reset_flag != 0)
 348     {
 349         Speech_Encode_Frame_reset(s->enstate);
 350         sid_sync_reset(s->sidstate);
 351     }
 352     return written;
 353 }
 354
 355
 356 #elif defined(CONFIG_AMR_NB) /* Float point version*/
 357
 358 typedef struct AMRContext {
 359     int frameCount;
 360     void * decState;
 361     int *enstate;
 362     int enc_bitrate;
 363 } AMRContext;
 364
 365 static int amr_nb_decode_init(AVCodecContext * avctx)
 366 {
 367     AMRContext *s = avctx->priv_data;
 368
 369     s->frameCount=0;
 370     s->decState=Decoder_Interface_init();
 371     if(!s->decState)
 372     {
 373         av_log(avctx, AV_LOG_ERROR, "Decoder_Interface_init error\r\n");
 374         return -1;
 375     }
 376
 377     amr_decode_fix_avctx(avctx);
 378
 379     if(avctx->channels > 1)
 380     {
 381         av_log(avctx, AV_LOG_ERROR, "amr_nb: multichannel decoding not supported\n");
 382         return -1;
 383     }
 384
 385     return 0;
 386 }
 387
 388 static int amr_nb_encode_init(AVCodecContext * avctx)
 389 {
 390     AMRContext *s = avctx->priv_data;
 391
 392     s->frameCount=0;
 393
 394     if(avctx->sample_rate!=8000)
 395     {
 396         av_log(avctx, AV_LOG_ERROR, "Only 8000Hz sample rate supported\n");
 397         return -1;
 398     }
 399
 400     if(avctx->channels!=1)
 401     {
 402         av_log(avctx, AV_LOG_ERROR, "Only mono supported\n");
 403         return -1;
 404     }
 405
 406     avctx->frame_size=160;
 407     avctx->coded_frame= avcodec_alloc_frame();
 408
 409     s->enstate=Encoder_Interface_init(0);
 410     if(!s->enstate)
 411     {
 412         av_log(avctx, AV_LOG_ERROR, "Encoder_Interface_init error\n");
 413         return -1;
 414     }
 415
 416     if((s->enc_bitrate=getBitrateMode(avctx->bit_rate))<0)
 417     {
 418         av_log(avctx, AV_LOG_ERROR, "bitrate not supported\n");
 419         return -1;
 420     }
 421
 422     return 0;
 423 }
 424
 425 static int amr_nb_decode_close(AVCodecContext * avctx)
 426 {
 427     AMRContext *s = avctx->priv_data;
 428
 429     Decoder_Interface_exit(s->decState);
 430     return 0;
 431 }
 432
 433 static int amr_nb_encode_close(AVCodecContext * avctx)
 434 {
 435     AMRContext *s = avctx->priv_data;
 436
 437     Encoder_Interface_exit(s->enstate);
 438     av_freep(&avctx->coded_frame);
 439     return 0;
 440 }
 441
 442 static int amr_nb_decode_frame(AVCodecContext * avctx,
 443             void *data, int *data_size,
 444             uint8_t * buf, int buf_size)
 445 {
 446     AMRContext *s = avctx->priv_data;
 447     uint8_t*amrData=buf;
 448     static short block_size[16]={ 12, 13, 15, 17, 19, 20, 26, 31, 5, 0, 0, 0, 0, 0, 0, 0 };
 449     enum Mode dec_mode;
 450     int packet_size;
 451
 452     /* av_log(NULL,AV_LOG_DEBUG,"amr_decode_frame buf=%p buf_size=%d frameCount=%d!!\n",buf,buf_size,s->frameCount); */
 453
 454     dec_mode = (buf[0] >> 3) & 0x000F;
 455     packet_size = block_size[dec_mode]+1;
 456
 457     if(packet_size > buf_size) {
 458         av_log(avctx, AV_LOG_ERROR, "amr frame too short (%u, should be %u)\n", buf_size, packet_size);
 459         return -1;
 460     }
 461
 462     s->frameCount++;
 463     /* av_log(NULL,AV_LOG_DEBUG,"packet_size=%d amrData= 0x%X %X %X %X\n",packet_size,amrData[0],amrData[1],amrData[2],amrData[3]); */
 464     /* call decoder */
 465     Decoder_Interface_Decode(s->decState, amrData, data, 0);
 466     *data_size=160*2;
 467
 468     return packet_size;
 469 }
 470
 471 static int amr_nb_encode_frame(AVCodecContext *avctx,
 472                             unsigned char *frame/*out*/, int buf_size, void *data/*in*/)
 473 {
 474     AMRContext *s = avctx->priv_data;
 475     int written;
 476
 477     if((s->enc_bitrate=getBitrateMode(avctx->bit_rate))<0)
 478     {
 479         av_log(avctx, AV_LOG_ERROR, "bitrate not supported\n");
 480         return -1;
 481     }
 482
 483     written = Encoder_Interface_Encode(s->enstate,
 484         s->enc_bitrate,
 485         data,
 486         frame,
 487         0);
 488     /* av_log(NULL,AV_LOG_DEBUG,"amr_nb_encode_frame encoded %u bytes, bitrate %u, first byte was %#02x\n",written, s->enc_bitrate, frame[0] ); */
 489
 490     return written;
 491 }
 492
 493 #endif
 494
 495 #if defined(CONFIG_AMR_NB) || defined(CONFIG_AMR_NB_FIXED)
 496
 497 AVCodec amr_nb_decoder =
 498 {
 499     "amr_nb",
 500     CODEC_TYPE_AUDIO,
 501     CODEC_ID_AMR_NB,
 502     sizeof(AMRContext),
 503     amr_nb_decode_init,
 504     NULL,
 505     amr_nb_decode_close,
 506     amr_nb_decode_frame,
 507 };
 508
 509 AVCodec amr_nb_encoder =
 510 {
 511     "amr_nb",
 512     CODEC_TYPE_AUDIO,
 513     CODEC_ID_AMR_NB,
 514     sizeof(AMRContext),
 515     amr_nb_encode_init,
 516     amr_nb_encode_frame,
 517     amr_nb_encode_close,
 518     NULL,
 519 };
 520
 521 #endif
 522
 523 /* -----------AMR wideband ------------*/
 524 #ifdef CONFIG_AMR_WB
 525
 526 #ifdef _TYPEDEF_H
 527 //To avoid duplicate typedefs from typdef in amr-nb
 528 #define typedef_h
 529 #endif
 530
 531 #include "amrwb_float/enc_if.h"
 532 #include "amrwb_float/dec_if.h"
 533
 534 /* Common code for fixed and float version*/
 535 typedef struct AMRWB_bitrates
 536 {
 537     int rate;
 538     int mode;
 539 } AMRWB_bitrates;
 540
 541 static int getWBBitrateMode(int bitrate)
 542 {
 543     /* make the correspondance between bitrate and mode */
 544     AMRWB_bitrates rates[]={ {6600,0},
 545                            {8850,1},
 546                            {12650,2},
 547                            {14250,3},
 548                            {15850,4},
 549                            {18250,5},
 550                            {19850,6},
 551                            {23050,7},
 552                            {23850,8},
 553                          };
 554     int i;
 555
 556     for(i=0;i<9;i++)
 557     {
 558         if(rates[i].rate==bitrate)
 559         {
 560             return(rates[i].mode);
 561         }
 562     }
 563     /* no bitrate matching, return an error */
 564     return -1;
 565 }
 566
 567
 568 typedef struct AMRWBContext {
 569     int frameCount;
 570     void *state;
 571     int mode;
 572     Word16 allow_dtx;
 573 } AMRWBContext;
 574
 575 static int amr_wb_encode_init(AVCodecContext * avctx)
 576 {
 577     AMRWBContext *s = avctx->priv_data;
 578
 579     s->frameCount=0;
 580
 581     if(avctx->sample_rate!=16000)
 582     {
 583         av_log(avctx, AV_LOG_ERROR, "Only 16000Hz sample rate supported\n");
 584         return -1;
 585     }
 586
 587     if(avctx->channels!=1)
 588     {
 589         av_log(avctx, AV_LOG_ERROR, "Only mono supported\n");
 590         return -1;
 591     }
 592
 593     if((s->mode=getWBBitrateMode(avctx->bit_rate))<0)
 594     {
 595         av_log(avctx, AV_LOG_ERROR, "bitrate not supported\n");
 596         return -1;
 597     }
 598
 599     avctx->frame_size=320;
 600     avctx->coded_frame= avcodec_alloc_frame();
 601
 602     s->state = E_IF_init();
 603     s->allow_dtx=0;
 604
 605     return 0;
 606 }
 607
 608 static int amr_wb_encode_close(AVCodecContext * avctx)
 609 {
 610     AMRWBContext *s = avctx->priv_data;
 611
 612     E_IF_exit(s->state);
 613     av_freep(&avctx->coded_frame);
 614     s->frameCount++;
 615     return 0;
 616 }
 617
 618 static int amr_wb_encode_frame(AVCodecContext *avctx,
 619                             unsigned char *frame/*out*/, int buf_size, void *data/*in*/)
 620 {
 621     AMRWBContext *s = avctx->priv_data;
 622     int size;
 623
 624     if((s->mode=getWBBitrateMode(avctx->bit_rate))<0)
 625     {
 626         av_log(avctx, AV_LOG_ERROR, "bitrate not supported\n");
 627         return -1;
 628     }
 629     size = E_IF_encode(s->state, s->mode, data, frame, s->allow_dtx);
 630     return size;
 631 }
 632
 633 static int amr_wb_decode_init(AVCodecContext * avctx)
 634 {
 635     AMRWBContext *s = avctx->priv_data;
 636
 637     s->frameCount=0;
 638     s->state = D_IF_init();
 639
 640     amr_decode_fix_avctx(avctx);
 641
 642     if(avctx->channels > 1)
 643     {
 644         av_log(avctx, AV_LOG_ERROR, "amr_wb: multichannel decoding not supported\n");
 645         return -1;
 646     }
 647
 648     return 0;
 649 }
 650
 651 extern const UWord8 block_size[];
 652
 653 static int amr_wb_decode_frame(AVCodecContext * avctx,
 654             void *data, int *data_size,
 655             uint8_t * buf, int buf_size)
 656 {
 657     AMRWBContext *s = avctx->priv_data;
 658     uint8_t*amrData=buf;
 659     int mode;
 660     int packet_size;
 661
 662     if(buf_size==0) {
 663         /* nothing to do */
 664         return 0;
 665     }
 666
 667     mode = (amrData[0] >> 3) & 0x000F;
 668     packet_size = block_size[mode];
 669
 670     if(packet_size > buf_size) {
 671         av_log(avctx, AV_LOG_ERROR, "amr frame too short (%u, should be %u)\n", buf_size, packet_size+1);
 672         return -1;
 673     }
 674
 675     s->frameCount++;
 676     D_IF_decode( s->state, amrData, data, _good_frame);
 677     *data_size=320*2;
 678     return packet_size;
 679 }
 680
 681 static int amr_wb_decode_close(AVCodecContext * avctx)
 682 {
 683     AMRWBContext *s = avctx->priv_data;
 684
 685     D_IF_exit(s->state);
 686     return 0;
 687 }
 688
 689 AVCodec amr_wb_decoder =
 690 {
 691     "amr_wb",
 692     CODEC_TYPE_AUDIO,
 693     CODEC_ID_AMR_WB,
 694     sizeof(AMRWBContext),
 695     amr_wb_decode_init,
 696     NULL,
 697     amr_wb_decode_close,
 698     amr_wb_decode_frame,
 699 };
 700
 701 AVCodec amr_wb_encoder =
 702 {
 703     "amr_wb",
 704     CODEC_TYPE_AUDIO,
 705     CODEC_ID_AMR_WB,
 706     sizeof(AMRWBContext),
 707     amr_wb_encode_init,
 708     amr_wb_encode_frame,
 709     amr_wb_encode_close,
 710     NULL,
 711 };
 712
 713 #endif //CONFIG_AMR_WB