Asterisk - The Open Source Telephony Project GIT-master-f36a736
Functions
iLBC_encode.c File Reference
#include <math.h>
#include <stdlib.h>
#include <string.h>
#include "iLBC_define.h"
#include "LPCencode.h"
#include "FrameClassify.h"
#include "StateSearchW.h"
#include "StateConstructW.h"
#include "helpfun.h"
#include "constants.h"
#include "packing.h"
#include "iCBSearch.h"
#include "iCBConstruct.h"
#include "hpInput.h"
#include "anaFilter.h"
#include "syntFilter.h"
Include dependency graph for iLBC_encode.c:

Go to the source code of this file.

Functions

void iLBC_encode (unsigned char *bytes, float *block, iLBC_Enc_Inst_t *iLBCenc_inst)
 
short initEncode (iLBC_Enc_Inst_t *iLBCenc_inst, int mode)
 

Function Documentation

◆ iLBC_encode()

void iLBC_encode ( unsigned char *  bytes,
float *  block,
iLBC_Enc_Inst_t *  iLBCenc_inst 
)

Definition at line 89 of file iLBC_encode.c.

95 {
96
97 float data[BLOCKL_MAX];
98 float residual[BLOCKL_MAX], reverseResidual[BLOCKL_MAX];
99
100 int start, idxForMax, idxVec[STATE_LEN];
101
102
103
104
105
106 float reverseDecresidual[BLOCKL_MAX], mem[CB_MEML];
107 int n, k, meml_gotten, Nfor, Nback, i, pos;
108 int gain_index[CB_NSTAGES*NASUB_MAX],
109 extra_gain_index[CB_NSTAGES];
110 int cb_index[CB_NSTAGES*NASUB_MAX],extra_cb_index[CB_NSTAGES];
111 int lsf_i[LSF_NSPLIT*LPC_N_MAX];
112 unsigned char *pbytes;
113 int diff, start_pos, state_first;
114 float en1, en2;
115 int index, ulp, firstpart;
116 int subcount, subframe;
117 float weightState[LPC_FILTERORDER];
118 float syntdenum[NSUB_MAX*(LPC_FILTERORDER+1)];
119 float weightdenum[NSUB_MAX*(LPC_FILTERORDER+1)];
120 float decresidual[BLOCKL_MAX];
121
122 /* high pass filtering of input signal if such is not done
123 prior to calling this function */
124
125 hpInput(block, iLBCenc_inst->blockl,
126 data, (*iLBCenc_inst).hpimem);
127
128 /* otherwise simply copy */
129
130 /*memcpy(data,block,iLBCenc_inst->blockl*sizeof(float));*/
131
132 /* LPC of hp filtered input data */
133
134 LPCencode(syntdenum, weightdenum, lsf_i, data, iLBCenc_inst);
135
136
137 /* inverse filter to get residual */
138
139 for (n=0; n<iLBCenc_inst->nsub; n++) {
140 anaFilter(&data[n*SUBL], &syntdenum[n*(LPC_FILTERORDER+1)],
141 SUBL, &residual[n*SUBL], iLBCenc_inst->anaMem);
142 }
143
144 /* find state location */
145
146 start = FrameClassify(iLBCenc_inst, residual);
147
148 /* check if state should be in first or last part of the
149 two subframes */
150
151 diff = STATE_LEN - iLBCenc_inst->state_short_len;
152 en1 = 0;
153 index = (start-1)*SUBL;
154
155
156
157
158
159 for (i = 0; i < iLBCenc_inst->state_short_len; i++) {
160 en1 += residual[index+i]*residual[index+i];
161 }
162 en2 = 0;
163 index = (start-1)*SUBL+diff;
164 for (i = 0; i < iLBCenc_inst->state_short_len; i++) {
165 en2 += residual[index+i]*residual[index+i];
166 }
167
168
169 if (en1 > en2) {
170 state_first = 1;
171 start_pos = (start-1)*SUBL;
172 } else {
173 state_first = 0;
174 start_pos = (start-1)*SUBL + diff;
175 }
176
177 /* scalar quantization of state */
178
179 StateSearchW(iLBCenc_inst, &residual[start_pos],
180 &syntdenum[(start-1)*(LPC_FILTERORDER+1)],
181 &weightdenum[(start-1)*(LPC_FILTERORDER+1)], &idxForMax,
182 idxVec, iLBCenc_inst->state_short_len, state_first);
183
184 StateConstructW(idxForMax, idxVec,
185 &syntdenum[(start-1)*(LPC_FILTERORDER+1)],
186 &decresidual[start_pos], iLBCenc_inst->state_short_len);
187
188 /* predictive quantization in state */
189
190 if (state_first) { /* put adaptive part in the end */
191
192 /* setup memory */
193
194 memset(mem, 0,
195 (CB_MEML-iLBCenc_inst->state_short_len)*sizeof(float));
196 memcpy(mem+CB_MEML-iLBCenc_inst->state_short_len,
197 decresidual+start_pos,
198 iLBCenc_inst->state_short_len*sizeof(float));
199 memset(weightState, 0, LPC_FILTERORDER*sizeof(float));
200
201 /* encode sub-frames */
202
203 iCBSearch(iLBCenc_inst, extra_cb_index, extra_gain_index,
204 &residual[start_pos+iLBCenc_inst->state_short_len],
205 mem+CB_MEML-stMemLTbl,
206 stMemLTbl, diff, CB_NSTAGES,
207
208
209
210
211
212 &weightdenum[start*(LPC_FILTERORDER+1)],
213 weightState, 0);
214
215 /* construct decoded vector */
216
217 iCBConstruct(
218 &decresidual[start_pos+iLBCenc_inst->state_short_len],
219 extra_cb_index, extra_gain_index,
220 mem+CB_MEML-stMemLTbl,
221 stMemLTbl, diff, CB_NSTAGES);
222
223 }
224 else { /* put adaptive part in the beginning */
225
226 /* create reversed vectors for prediction */
227
228 for (k=0; k<diff; k++) {
229 reverseResidual[k] = residual[(start+1)*SUBL-1
230 -(k+iLBCenc_inst->state_short_len)];
231 }
232
233 /* setup memory */
234
235 meml_gotten = iLBCenc_inst->state_short_len;
236 for (k=0; k<meml_gotten; k++) {
237 mem[CB_MEML-1-k] = decresidual[start_pos + k];
238 }
239 memset(mem, 0, (CB_MEML-k)*sizeof(float));
240 memset(weightState, 0, LPC_FILTERORDER*sizeof(float));
241
242 /* encode sub-frames */
243
244 iCBSearch(iLBCenc_inst, extra_cb_index, extra_gain_index,
245 reverseResidual, mem+CB_MEML-stMemLTbl, stMemLTbl,
246 diff, CB_NSTAGES,
247 &weightdenum[(start-1)*(LPC_FILTERORDER+1)],
248 weightState, 0);
249
250 /* construct decoded vector */
251
252 iCBConstruct(reverseDecresidual, extra_cb_index,
253 extra_gain_index, mem+CB_MEML-stMemLTbl, stMemLTbl,
254 diff, CB_NSTAGES);
255
256 /* get decoded residual from reversed vector */
257
258 for (k=0; k<diff; k++) {
259 decresidual[start_pos-1-k] = reverseDecresidual[k];
260
261
262
263
264
265 }
266 }
267
268 /* counter for predicted sub-frames */
269
270 subcount=0;
271
272 /* forward prediction of sub-frames */
273
274 Nfor = iLBCenc_inst->nsub-start-1;
275
276
277 if ( Nfor > 0 ) {
278
279 /* setup memory */
280
281 memset(mem, 0, (CB_MEML-STATE_LEN)*sizeof(float));
282 memcpy(mem+CB_MEML-STATE_LEN, decresidual+(start-1)*SUBL,
283 STATE_LEN*sizeof(float));
284 memset(weightState, 0, LPC_FILTERORDER*sizeof(float));
285
286 /* loop over sub-frames to encode */
287
288 for (subframe=0; subframe<Nfor; subframe++) {
289
290 /* encode sub-frame */
291
292 iCBSearch(iLBCenc_inst, cb_index+subcount*CB_NSTAGES,
293 gain_index+subcount*CB_NSTAGES,
294 &residual[(start+1+subframe)*SUBL],
295 mem+CB_MEML-memLfTbl[subcount],
296 memLfTbl[subcount], SUBL, CB_NSTAGES,
297 &weightdenum[(start+1+subframe)*
298 (LPC_FILTERORDER+1)],
299 weightState, subcount+1);
300
301 /* construct decoded vector */
302
303 iCBConstruct(&decresidual[(start+1+subframe)*SUBL],
304 cb_index+subcount*CB_NSTAGES,
305 gain_index+subcount*CB_NSTAGES,
306 mem+CB_MEML-memLfTbl[subcount],
307 memLfTbl[subcount], SUBL, CB_NSTAGES);
308
309 /* update memory */
310
311 memmove(mem, mem+SUBL, (CB_MEML-SUBL)*sizeof(float));
312 memcpy(mem+CB_MEML-SUBL,
313
314
315
316
317
318 &decresidual[(start+1+subframe)*SUBL],
319 SUBL*sizeof(float));
320 memset(weightState, 0, LPC_FILTERORDER*sizeof(float));
321
322 subcount++;
323 }
324 }
325
326
327 /* backward prediction of sub-frames */
328
329 Nback = start-1;
330
331
332 if ( Nback > 0 ) {
333
334 /* create reverse order vectors */
335
336 for (n=0; n<Nback; n++) {
337 for (k=0; k<SUBL; k++) {
338 reverseResidual[n*SUBL+k] =
339 residual[(start-1)*SUBL-1-n*SUBL-k];
340 reverseDecresidual[n*SUBL+k] =
341 decresidual[(start-1)*SUBL-1-n*SUBL-k];
342 }
343 }
344
345 /* setup memory */
346
347 meml_gotten = SUBL*(iLBCenc_inst->nsub+1-start);
348
349
350 if ( meml_gotten > CB_MEML ) {
351 meml_gotten=CB_MEML;
352 }
353 for (k=0; k<meml_gotten; k++) {
354 mem[CB_MEML-1-k] = decresidual[(start-1)*SUBL + k];
355 }
356 memset(mem, 0, (CB_MEML-k)*sizeof(float));
357 memset(weightState, 0, LPC_FILTERORDER*sizeof(float));
358
359 /* loop over sub-frames to encode */
360
361 for (subframe=0; subframe<Nback; subframe++) {
362
363 /* encode sub-frame */
364
365 iCBSearch(iLBCenc_inst, cb_index+subcount*CB_NSTAGES,
366
367
368
369
370
371 gain_index+subcount*CB_NSTAGES,
372 &reverseResidual[subframe*SUBL],
373 mem+CB_MEML-memLfTbl[subcount],
374 memLfTbl[subcount], SUBL, CB_NSTAGES,
375 &weightdenum[(start-2-subframe)*
376 (LPC_FILTERORDER+1)],
377 weightState, subcount+1);
378
379 /* construct decoded vector */
380
381 iCBConstruct(&reverseDecresidual[subframe*SUBL],
382 cb_index+subcount*CB_NSTAGES,
383 gain_index+subcount*CB_NSTAGES,
384 mem+CB_MEML-memLfTbl[subcount],
385 memLfTbl[subcount], SUBL, CB_NSTAGES);
386
387 /* update memory */
388
389 memmove(mem, mem+SUBL, (CB_MEML-SUBL)*sizeof(float));
390 memcpy(mem+CB_MEML-SUBL,
391 &reverseDecresidual[subframe*SUBL],
392 SUBL*sizeof(float));
393 memset(weightState, 0, LPC_FILTERORDER*sizeof(float));
394
395 subcount++;
396
397 }
398
399 /* get decoded residual from reversed vector */
400
401 for (i=0; i<SUBL*Nback; i++) {
402 decresidual[SUBL*Nback - i - 1] =
403 reverseDecresidual[i];
404 }
405 }
406 /* end encoding part */
407
408 /* adjust index */
409 index_conv_enc(cb_index);
410
411 /* pack bytes */
412
413 pbytes=bytes;
414 pos=0;
415
416 /* loop over the 3 ULP classes */
417
418 for (ulp=0; ulp<3; ulp++) {
419
420
421
422
423
424
425 /* LSF */
426 for (k=0; k<LSF_NSPLIT*iLBCenc_inst->lpc_n; k++) {
427 packsplit(&lsf_i[k], &firstpart, &lsf_i[k],
428 iLBCenc_inst->ULP_inst->lsf_bits[k][ulp],
429 iLBCenc_inst->ULP_inst->lsf_bits[k][ulp]+
430 iLBCenc_inst->ULP_inst->lsf_bits[k][ulp+1]+
431 iLBCenc_inst->ULP_inst->lsf_bits[k][ulp+2]);
432 dopack( &pbytes, firstpart,
433 iLBCenc_inst->ULP_inst->lsf_bits[k][ulp], &pos);
434 }
435
436 /* Start block info */
437
438 packsplit(&start, &firstpart, &start,
439 iLBCenc_inst->ULP_inst->start_bits[ulp],
440 iLBCenc_inst->ULP_inst->start_bits[ulp]+
441 iLBCenc_inst->ULP_inst->start_bits[ulp+1]+
442 iLBCenc_inst->ULP_inst->start_bits[ulp+2]);
443 dopack( &pbytes, firstpart,
444 iLBCenc_inst->ULP_inst->start_bits[ulp], &pos);
445
446 packsplit(&state_first, &firstpart, &state_first,
447 iLBCenc_inst->ULP_inst->startfirst_bits[ulp],
448 iLBCenc_inst->ULP_inst->startfirst_bits[ulp]+
449 iLBCenc_inst->ULP_inst->startfirst_bits[ulp+1]+
450 iLBCenc_inst->ULP_inst->startfirst_bits[ulp+2]);
451 dopack( &pbytes, firstpart,
452 iLBCenc_inst->ULP_inst->startfirst_bits[ulp], &pos);
453
454 packsplit(&idxForMax, &firstpart, &idxForMax,
455 iLBCenc_inst->ULP_inst->scale_bits[ulp],
456 iLBCenc_inst->ULP_inst->scale_bits[ulp]+
457 iLBCenc_inst->ULP_inst->scale_bits[ulp+1]+
458 iLBCenc_inst->ULP_inst->scale_bits[ulp+2]);
459 dopack( &pbytes, firstpart,
460 iLBCenc_inst->ULP_inst->scale_bits[ulp], &pos);
461
462 for (k=0; k<iLBCenc_inst->state_short_len; k++) {
463 packsplit(idxVec+k, &firstpart, idxVec+k,
464 iLBCenc_inst->ULP_inst->state_bits[ulp],
465 iLBCenc_inst->ULP_inst->state_bits[ulp]+
466 iLBCenc_inst->ULP_inst->state_bits[ulp+1]+
467 iLBCenc_inst->ULP_inst->state_bits[ulp+2]);
468 dopack( &pbytes, firstpart,
469 iLBCenc_inst->ULP_inst->state_bits[ulp], &pos);
470 }
471
472
473
474
475
476
477 /* 23/22 (20ms/30ms) sample block */
478
479 for (k=0;k<CB_NSTAGES;k++) {
480 packsplit(extra_cb_index+k, &firstpart,
481 extra_cb_index+k,
482 iLBCenc_inst->ULP_inst->extra_cb_index[k][ulp],
483 iLBCenc_inst->ULP_inst->extra_cb_index[k][ulp]+
484 iLBCenc_inst->ULP_inst->extra_cb_index[k][ulp+1]+
485 iLBCenc_inst->ULP_inst->extra_cb_index[k][ulp+2]);
486 dopack( &pbytes, firstpart,
487 iLBCenc_inst->ULP_inst->extra_cb_index[k][ulp],
488 &pos);
489 }
490
491 for (k=0;k<CB_NSTAGES;k++) {
492 packsplit(extra_gain_index+k, &firstpart,
493 extra_gain_index+k,
494 iLBCenc_inst->ULP_inst->extra_cb_gain[k][ulp],
495 iLBCenc_inst->ULP_inst->extra_cb_gain[k][ulp]+
496 iLBCenc_inst->ULP_inst->extra_cb_gain[k][ulp+1]+
497 iLBCenc_inst->ULP_inst->extra_cb_gain[k][ulp+2]);
498 dopack( &pbytes, firstpart,
499 iLBCenc_inst->ULP_inst->extra_cb_gain[k][ulp],
500 &pos);
501 }
502
503 /* The two/four (20ms/30ms) 40 sample sub-blocks */
504
505 for (i=0; i<iLBCenc_inst->nasub; i++) {
506 for (k=0; k<CB_NSTAGES; k++) {
507 packsplit(cb_index+i*CB_NSTAGES+k, &firstpart,
508 cb_index+i*CB_NSTAGES+k,
509 iLBCenc_inst->ULP_inst->cb_index[i][k][ulp],
510 iLBCenc_inst->ULP_inst->cb_index[i][k][ulp]+
511 iLBCenc_inst->ULP_inst->cb_index[i][k][ulp+1]+
512 iLBCenc_inst->ULP_inst->cb_index[i][k][ulp+2]);
513 dopack( &pbytes, firstpart,
514 iLBCenc_inst->ULP_inst->cb_index[i][k][ulp],
515 &pos);
516 }
517 }
518
519 for (i=0; i<iLBCenc_inst->nasub; i++) {
520 for (k=0; k<CB_NSTAGES; k++) {
521 packsplit(gain_index+i*CB_NSTAGES+k, &firstpart,
522 gain_index+i*CB_NSTAGES+k,
523 iLBCenc_inst->ULP_inst->cb_gain[i][k][ulp],
524 iLBCenc_inst->ULP_inst->cb_gain[i][k][ulp]+
525
526
527
528
529
530 iLBCenc_inst->ULP_inst->cb_gain[i][k][ulp+1]+
531 iLBCenc_inst->ULP_inst->cb_gain[i][k][ulp+2]);
532 dopack( &pbytes, firstpart,
533 iLBCenc_inst->ULP_inst->cb_gain[i][k][ulp],
534 &pos);
535 }
536 }
537 }
538
539 /* set the last bit to zero (otherwise the decoder
540 will treat it as a lost frame) */
541 dopack( &pbytes, 0, 1, &pos);
542 }
FrameClassify
int FrameClassify(iLBC_Enc_Inst_t *iLBCenc_inst, float *residual)
Definition: FrameClassify.c:19
LPCencode
void LPCencode(float *syntdenum, float *weightdenum, int *lsf_index, float *data, iLBC_Enc_Inst_t *iLBCenc_inst)
Definition: LPCencode.c:214
StateConstructW
void StateConstructW(int idxForMax, int *idxVec, float *syntDenum, float *out, int len)
Definition: StateConstructW.c:24
StateSearchW
void StateSearchW(iLBC_Enc_Inst_t *iLBCenc_inst, float *residual, float *syntDenum, float *weightDenum, int *idxForMax, int *idxVec, int len, int state_first)
Definition: StateSearchW.c:121
anaFilter
void anaFilter(float *In, float *a, int len, float *Out, float *mem)
Definition: anaFilter.c:20
stMemLTbl
int stMemLTbl
Definition: constants.c:137
memLfTbl
int memLfTbl[NASUB_MAX]
Definition: constants.c:138
hpInput
void hpInput(float *In, int len, float *Out, float *mem)
Definition: hpInput.c:23
iCBConstruct
void iCBConstruct(float *decvector, int *index, int *gain_index, float *mem, int lMem, int veclen, int nStages)
Definition: iCBConstruct.c:66
index_conv_enc
void index_conv_enc(int *index)
Definition: iCBConstruct.c:28
iCBSearch
void iCBSearch(iLBC_Enc_Inst_t *iLBCenc_inst, int *index, int *gain_index, float *intarget, float *mem, int lMem, int lTarget, int nStages, float *weightDenum, float *weightState, int block)
Definition: iCBSearch.c:26
STATE_LEN
#define STATE_LEN
Definition: iLBC_define.h:34
BLOCKL_MAX
#define BLOCKL_MAX
Definition: iLBC_define.h:21
CB_NSTAGES
#define CB_NSTAGES
Definition: iLBC_define.h:56
CB_MEML
#define CB_MEML
Definition: iLBC_define.h:58
SUBL
#define SUBL
Definition: iLBC_define.h:33
LPC_FILTERORDER
#define LPC_FILTERORDER
Definition: iLBC_define.h:40
NSUB_MAX
#define NSUB_MAX
Definition: iLBC_define.h:24
LPC_N_MAX
#define LPC_N_MAX
Definition: iLBC_define.h:46
LSF_NSPLIT
#define LSF_NSPLIT
Definition: iLBC_define.h:50
NASUB_MAX
#define NASUB_MAX
Definition: iLBC_define.h:32
dopack
void dopack(unsigned char **bitstream, int index, int bitno, int *pos)
Definition: packing.c:68
packsplit
void packsplit(int *index, int *firstpart, int *rest, int bitno_firstpart, int bitno_total)
Definition: packing.c:26
iLBC_Enc_Inst_t_::nasub
int nasub
Definition: iLBC_define.h:140
iLBC_Enc_Inst_t_::state_short_len
int state_short_len
Definition: iLBC_define.h:143
iLBC_Enc_Inst_t_::ULP_inst
const iLBC_ULP_Inst_t * ULP_inst
Definition: iLBC_define.h:144
iLBC_Enc_Inst_t_::anaMem
float anaMem[LPC_FILTERORDER]
Definition: iLBC_define.h:147
iLBC_Enc_Inst_t_::blockl
int blockl
Definition: iLBC_define.h:138
iLBC_Enc_Inst_t_::nsub
int nsub
Definition: iLBC_define.h:139
iLBC_Enc_Inst_t_::lpc_n
int lpc_n
Definition: iLBC_define.h:142
iLBC_ULP_Inst_t_::scale_bits
int scale_bits[ULP_CLASSES+2]
Definition: iLBC_define.h:118
iLBC_ULP_Inst_t_::extra_cb_index
int extra_cb_index[CB_NSTAGES][ULP_CLASSES+2]
Definition: iLBC_define.h:120
iLBC_ULP_Inst_t_::lsf_bits
int lsf_bits[6][ULP_CLASSES+2]
Definition: iLBC_define.h:115
iLBC_ULP_Inst_t_::startfirst_bits
int startfirst_bits[ULP_CLASSES+2]
Definition: iLBC_define.h:117
iLBC_ULP_Inst_t_::cb_index
int cb_index[NSUB_MAX][CB_NSTAGES][ULP_CLASSES+2]
Definition: iLBC_define.h:122
iLBC_ULP_Inst_t_::cb_gain
int cb_gain[NSUB_MAX][CB_NSTAGES][ULP_CLASSES+2]
Definition: iLBC_define.h:123
iLBC_ULP_Inst_t_::extra_cb_gain
int extra_cb_gain[CB_NSTAGES][ULP_CLASSES+2]
Definition: iLBC_define.h:121
iLBC_ULP_Inst_t_::start_bits
int start_bits[ULP_CLASSES+2]
Definition: iLBC_define.h:116
iLBC_ULP_Inst_t_::state_bits
int state_bits[ULP_CLASSES+2]
Definition: iLBC_define.h:119

References anaFilter(), iLBC_Enc_Inst_t_::anaMem, iLBC_Enc_Inst_t_::blockl, BLOCKL_MAX, iLBC_ULP_Inst_t_::cb_gain, iLBC_ULP_Inst_t_::cb_index, CB_MEML, CB_NSTAGES, dopack(), iLBC_ULP_Inst_t_::extra_cb_gain, iLBC_ULP_Inst_t_::extra_cb_index, FrameClassify(), hpInput(), iCBConstruct(), iCBSearch(), index_conv_enc(), LPC_FILTERORDER, iLBC_Enc_Inst_t_::lpc_n, LPC_N_MAX, LPCencode(), iLBC_ULP_Inst_t_::lsf_bits, LSF_NSPLIT, memLfTbl, iLBC_Enc_Inst_t_::nasub, NASUB_MAX, iLBC_Enc_Inst_t_::nsub, NSUB_MAX, packsplit(), iLBC_ULP_Inst_t_::scale_bits, iLBC_ULP_Inst_t_::start_bits, iLBC_ULP_Inst_t_::startfirst_bits, iLBC_ULP_Inst_t_::state_bits, STATE_LEN, iLBC_Enc_Inst_t_::state_short_len, StateConstructW(), StateSearchW(), stMemLTbl, SUBL, and iLBC_Enc_Inst_t_::ULP_inst.

Referenced by encode(), and lintoilbc_frameout().

◆ initEncode()

short initEncode ( iLBC_Enc_Inst_t *  iLBCenc_inst,
int  mode 
)

Definition at line 35 of file iLBC_encode.c.

39 {
40 iLBCenc_inst->mode = mode;
41 if (mode==30) {
42 iLBCenc_inst->blockl = BLOCKL_30MS;
43 iLBCenc_inst->nsub = NSUB_30MS;
44 iLBCenc_inst->nasub = NASUB_30MS;
45 iLBCenc_inst->lpc_n = LPC_N_30MS;
46 iLBCenc_inst->no_of_bytes = NO_OF_BYTES_30MS;
47 iLBCenc_inst->no_of_words = NO_OF_WORDS_30MS;
48
49
50
51
52
53 iLBCenc_inst->state_short_len=STATE_SHORT_LEN_30MS;
54 /* ULP init */
55 iLBCenc_inst->ULP_inst=&ULP_30msTbl;
56 }
57 else if (mode==20) {
58 iLBCenc_inst->blockl = BLOCKL_20MS;
59 iLBCenc_inst->nsub = NSUB_20MS;
60 iLBCenc_inst->nasub = NASUB_20MS;
61 iLBCenc_inst->lpc_n = LPC_N_20MS;
62 iLBCenc_inst->no_of_bytes = NO_OF_BYTES_20MS;
63 iLBCenc_inst->no_of_words = NO_OF_WORDS_20MS;
64 iLBCenc_inst->state_short_len=STATE_SHORT_LEN_20MS;
65 /* ULP init */
66 iLBCenc_inst->ULP_inst=&ULP_20msTbl;
67 }
68 else {
69 exit(2);
70 }
71
72 memset((*iLBCenc_inst).anaMem, 0,
73 LPC_FILTERORDER*sizeof(float));
74 memcpy((*iLBCenc_inst).lsfold, lsfmeanTbl,
75 LPC_FILTERORDER*sizeof(float));
76 memcpy((*iLBCenc_inst).lsfdeqold, lsfmeanTbl,
77 LPC_FILTERORDER*sizeof(float));
78 memset((*iLBCenc_inst).lpc_buffer, 0,
79 (LPC_LOOKBACK+BLOCKL_MAX)*sizeof(float));
80 memset((*iLBCenc_inst).hpimem, 0, 4*sizeof(float));
81
82 return (iLBCenc_inst->no_of_bytes);
83 }
ULP_30msTbl
const iLBC_ULP_Inst_t ULP_30msTbl
Definition: constants.c:44
lsfmeanTbl
float lsfmeanTbl[LPC_FILTERORDER]
Definition: constants.c:210
ULP_20msTbl
const iLBC_ULP_Inst_t ULP_20msTbl
Definition: constants.c:19
NO_OF_BYTES_20MS
#define NO_OF_BYTES_20MS
Definition: iLBC_define.h:95
LPC_N_30MS
#define LPC_N_30MS
Definition: iLBC_define.h:45
LPC_LOOKBACK
#define LPC_LOOKBACK
Definition: iLBC_define.h:43
NO_OF_BYTES_30MS
#define NO_OF_BYTES_30MS
Definition: iLBC_define.h:96
NASUB_30MS
#define NASUB_30MS
Definition: iLBC_define.h:31
LPC_N_20MS
#define LPC_N_20MS
Definition: iLBC_define.h:44
STATE_SHORT_LEN_20MS
#define STATE_SHORT_LEN_20MS
Definition: iLBC_define.h:36
NASUB_20MS
#define NASUB_20MS
Definition: iLBC_define.h:25
STATE_SHORT_LEN_30MS
#define STATE_SHORT_LEN_30MS
Definition: iLBC_define.h:35
NSUB_30MS
#define NSUB_30MS
Definition: iLBC_define.h:23
NO_OF_WORDS_20MS
#define NO_OF_WORDS_20MS
Definition: iLBC_define.h:97
NO_OF_WORDS_30MS
#define NO_OF_WORDS_30MS
Definition: iLBC_define.h:98
BLOCKL_20MS
#define BLOCKL_20MS
Definition: iLBC_define.h:19
BLOCKL_30MS
#define BLOCKL_30MS
Definition: iLBC_define.h:20
NSUB_20MS
#define NSUB_20MS
Definition: iLBC_define.h:22
iLBC_Enc_Inst_t_::mode
int mode
Definition: iLBC_define.h:135
iLBC_Enc_Inst_t_::no_of_bytes
int no_of_bytes
Definition: iLBC_define.h:141
iLBC_Enc_Inst_t_::no_of_words
int no_of_words
Definition: iLBC_define.h:141

References iLBC_Enc_Inst_t_::blockl, BLOCKL_20MS, BLOCKL_30MS, BLOCKL_MAX, LPC_FILTERORDER, LPC_LOOKBACK, iLBC_Enc_Inst_t_::lpc_n, LPC_N_20MS, LPC_N_30MS, lsfmeanTbl, iLBC_Enc_Inst_t_::mode, iLBC_Enc_Inst_t_::nasub, NASUB_20MS, NASUB_30MS, iLBC_Enc_Inst_t_::no_of_bytes, NO_OF_BYTES_20MS, NO_OF_BYTES_30MS, iLBC_Enc_Inst_t_::no_of_words, NO_OF_WORDS_20MS, NO_OF_WORDS_30MS, iLBC_Enc_Inst_t_::nsub, NSUB_20MS, NSUB_30MS, iLBC_Enc_Inst_t_::state_short_len, STATE_SHORT_LEN_20MS, STATE_SHORT_LEN_30MS, ULP_20msTbl, ULP_30msTbl, and iLBC_Enc_Inst_t_::ULP_inst.

Referenced by lintoilbc_new(), and main().

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