3 * Copyright (c) 2007 Reynaldo H. Verdejo Pinochet
5 * This file is part of FFmpeg.
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.
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.
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
25 * @author Reynaldo H. Verdejo Pinochet
26 * @remark FFmpeg merging spearheaded by Kenan Gillet
27 * @remark Development mentored by Benjamin Larson
34 #include "bitstream.h"
36 #include "qcelpdata.h"
38 #include "celp_math.h"
39 #include "celp_filters.h"
46 I_F_Q
= -1, /*!< insufficient frame quality */
57 qcelp_packet_rate bitrate
;
58 QCELPFrame frame
; /*!< unpacked data frame */
60 uint8_t erasure_count
;
61 uint8_t octave_count
; /*!< count the consecutive RATE_OCTAVE frames */
63 float predictor_lspf
[10];/*!< LSP predictor for RATE_OCTAVE and I_F_Q */
64 float pitch_synthesis_filter_mem
[303];
65 float pitch_pre_filter_mem
[303];
66 float rnd_fir_filter_mem
[180];
67 float formant_mem
[170];
68 float last_codebook_gain
;
74 uint8_t warned_buf_mismatch_bitrate
;
78 * Reconstructs LPC coefficients from the line spectral pair frequencies.
80 * TIA/EIA/IS-733 2.4.3.3.5
82 void ff_qcelp_lspf2lpc(const float *lspf
, float *lpc
);
84 static void weighted_vector_sumf(float *out
, const float *in_a
,
85 const float *in_b
, float weight_coeff_a
,
86 float weight_coeff_b
, int length
)
90 for(i
=0; i
<length
; i
++)
91 out
[i
] = weight_coeff_a
* in_a
[i
]
92 + weight_coeff_b
* in_b
[i
];
96 * Initialize the speech codec according to the specification.
98 * TIA/EIA/IS-733 2.4.9
100 static av_cold
int qcelp_decode_init(AVCodecContext
*avctx
)
102 QCELPContext
*q
= avctx
->priv_data
;
105 avctx
->sample_fmt
= SAMPLE_FMT_FLT
;
108 q
->prev_lspf
[i
] = (i
+1)/11.;
114 * Decodes the 10 quantized LSP frequencies from the LSPV/LSP
115 * transmission codes of any bitrate and checks for badly received packets.
117 * @param q the context
118 * @param lspf line spectral pair frequencies
120 * @return 0 on success, -1 if the packet is badly received
122 * TIA/EIA/IS-733 2.4.3.2.6.2-2, 2.4.8.7.3
124 static int decode_lspf(QCELPContext
*q
, float *lspf
)
127 float tmp_lspf
, smooth
, erasure_coeff
;
128 const float *predictors
;
130 if(q
->bitrate
== RATE_OCTAVE
|| q
->bitrate
== I_F_Q
)
132 predictors
= (q
->prev_bitrate
!= RATE_OCTAVE
&&
133 q
->prev_bitrate
!= I_F_Q
?
134 q
->prev_lspf
: q
->predictor_lspf
);
136 if(q
->bitrate
== RATE_OCTAVE
)
142 q
->predictor_lspf
[i
] =
143 lspf
[i
] = (q
->frame
.lspv
[i
] ? QCELP_LSP_SPREAD_FACTOR
144 : -QCELP_LSP_SPREAD_FACTOR
)
145 + predictors
[i
] * QCELP_LSP_OCTAVE_PREDICTOR
146 + (i
+ 1) * ((1 - QCELP_LSP_OCTAVE_PREDICTOR
)/11);
148 smooth
= (q
->octave_count
< 10 ? .875 : 0.1);
151 erasure_coeff
= QCELP_LSP_OCTAVE_PREDICTOR
;
153 assert(q
->bitrate
== I_F_Q
);
155 if(q
->erasure_count
> 1)
156 erasure_coeff
*= (q
->erasure_count
< 4 ? 0.9 : 0.7);
160 q
->predictor_lspf
[i
] =
161 lspf
[i
] = (i
+ 1) * ( 1 - erasure_coeff
)/11
162 + erasure_coeff
* predictors
[i
];
167 // Check the stability of the LSP frequencies.
168 lspf
[0] = FFMAX(lspf
[0], QCELP_LSP_SPREAD_FACTOR
);
170 lspf
[i
] = FFMAX(lspf
[i
], (lspf
[i
-1] + QCELP_LSP_SPREAD_FACTOR
));
172 lspf
[9] = FFMIN(lspf
[9], (1.0 - QCELP_LSP_SPREAD_FACTOR
));
174 lspf
[i
-1] = FFMIN(lspf
[i
-1], (lspf
[i
] - QCELP_LSP_SPREAD_FACTOR
));
176 // Low-pass filter the LSP frequencies.
177 weighted_vector_sumf(lspf
, lspf
, q
->prev_lspf
, smooth
, 1.0-smooth
, 10);
185 lspf
[2*i
+0] = tmp_lspf
+= qcelp_lspvq
[i
][q
->frame
.lspv
[i
]][0] * 0.0001;
186 lspf
[2*i
+1] = tmp_lspf
+= qcelp_lspvq
[i
][q
->frame
.lspv
[i
]][1] * 0.0001;
189 // Check for badly received packets.
190 if(q
->bitrate
== RATE_QUARTER
)
192 if(lspf
[9] <= .70 || lspf
[9] >= .97)
195 if(fabs(lspf
[i
] - lspf
[i
-2]) < .08)
199 if(lspf
[9] <= .66 || lspf
[9] >= .985)
202 if (fabs(lspf
[i
] - lspf
[i
-4]) < .0931)
210 * Converts codebook transmission codes to GAIN and INDEX.
212 * @param q the context
213 * @param gain array holding the decoded gain
215 * TIA/EIA/IS-733 2.4.6.2
217 static void decode_gain_and_index(QCELPContext
*q
,
219 int i
, subframes_count
, g1
[16];
222 if(q
->bitrate
>= RATE_QUARTER
)
226 case RATE_FULL
: subframes_count
= 16; break;
227 case RATE_HALF
: subframes_count
= 4; break;
228 default: subframes_count
= 5;
230 for(i
=0; i
<subframes_count
; i
++)
232 g1
[i
] = 4 * q
->frame
.cbgain
[i
];
233 if(q
->bitrate
== RATE_FULL
&& !((i
+1) & 3))
235 g1
[i
] += av_clip((g1
[i
-1] + g1
[i
-2] + g1
[i
-3]) / 3 - 6, 0, 32);
238 gain
[i
] = qcelp_g12ga
[g1
[i
]];
240 if(q
->frame
.cbsign
[i
])
243 q
->frame
.cindex
[i
] = (q
->frame
.cindex
[i
]-89) & 127;
247 q
->prev_g1
[0] = g1
[i
-2];
248 q
->prev_g1
[1] = g1
[i
-1];
249 q
->last_codebook_gain
= qcelp_g12ga
[g1
[i
-1]];
251 if(q
->bitrate
== RATE_QUARTER
)
253 // Provide smoothing of the unvoiced excitation energy.
255 gain
[6] = 0.4*gain
[3] + 0.6*gain
[4];
257 gain
[4] = 0.8*gain
[2] + 0.2*gain
[3];
258 gain
[3] = 0.2*gain
[1] + 0.8*gain
[2];
260 gain
[1] = 0.6*gain
[0] + 0.4*gain
[1];
264 if(q
->bitrate
== RATE_OCTAVE
)
266 g1
[0] = 2 * q
->frame
.cbgain
[0]
267 + av_clip((q
->prev_g1
[0] + q
->prev_g1
[1]) / 2 - 5, 0, 54);
271 assert(q
->bitrate
== I_F_Q
);
273 g1
[0] = q
->prev_g1
[1];
274 switch(q
->erasure_count
)
277 case 2 : g1
[0] -= 1; break;
278 case 3 : g1
[0] -= 2; break;
285 // This interpolation is done to produce smoother background noise.
286 slope
= 0.5*(qcelp_g12ga
[g1
[0]] - q
->last_codebook_gain
) / subframes_count
;
287 for(i
=1; i
<=subframes_count
; i
++)
288 gain
[i
-1] = q
->last_codebook_gain
+ slope
* i
;
290 q
->last_codebook_gain
= gain
[i
-2];
291 q
->prev_g1
[0] = q
->prev_g1
[1];
292 q
->prev_g1
[1] = g1
[0];
297 * If the received packet is Rate 1/4 a further sanity check is made of the
300 * @param cbgain the unpacked cbgain array
301 * @return -1 if the sanity check fails, 0 otherwise
303 * TIA/EIA/IS-733 2.4.8.7.3
305 static int codebook_sanity_check_for_rate_quarter(const uint8_t *cbgain
)
307 int i
, diff
, prev_diff
=0;
311 diff
= cbgain
[i
] - cbgain
[i
-1];
314 else if(FFABS(diff
- prev_diff
) > 12)
322 * Computes the scaled codebook vector Cdn From INDEX and GAIN
325 * The specification lacks some information here.
327 * TIA/EIA/IS-733 has an omission on the codebook index determination
328 * formula for RATE_FULL and RATE_HALF frames at section 2.4.8.1.1. It says
329 * you have to subtract the decoded index parameter from the given scaled
330 * codebook vector index 'n' to get the desired circular codebook index, but
331 * it does not mention that you have to clamp 'n' to [0-9] in order to get
332 * RI-compliant results.
334 * The reason for this mistake seems to be the fact they forgot to mention you
335 * have to do these calculations per codebook subframe and adjust given
336 * equation values accordingly.
338 * @param q the context
339 * @param gain array holding the 4 pitch subframe gain values
340 * @param cdn_vector array for the generated scaled codebook vector
342 static void compute_svector(QCELPContext
*q
, const float *gain
,
346 uint16_t cbseed
, cindex
;
347 float *rnd
, tmp_gain
, fir_filter_value
;
354 tmp_gain
= gain
[i
] * QCELP_RATE_FULL_CODEBOOK_RATIO
;
355 cindex
= -q
->frame
.cindex
[i
];
357 *cdn_vector
++ = tmp_gain
* qcelp_rate_full_codebook
[cindex
++ & 127];
363 tmp_gain
= gain
[i
] * QCELP_RATE_HALF_CODEBOOK_RATIO
;
364 cindex
= -q
->frame
.cindex
[i
];
365 for (j
= 0; j
< 40; j
++)
366 *cdn_vector
++ = tmp_gain
* qcelp_rate_half_codebook
[cindex
++ & 127];
370 cbseed
= (0x0003 & q
->frame
.lspv
[4])<<14 |
371 (0x003F & q
->frame
.lspv
[3])<< 8 |
372 (0x0060 & q
->frame
.lspv
[2])<< 1 |
373 (0x0007 & q
->frame
.lspv
[1])<< 3 |
374 (0x0038 & q
->frame
.lspv
[0])>> 3 ;
375 rnd
= q
->rnd_fir_filter_mem
+ 20;
378 tmp_gain
= gain
[i
] * (QCELP_SQRT1887
/ 32768.0);
381 cbseed
= 521 * cbseed
+ 259;
382 *rnd
= (int16_t)cbseed
;
385 fir_filter_value
= 0.0;
387 fir_filter_value
+= qcelp_rnd_fir_coefs
[j
]
388 * (rnd
[-j
] + rnd
[-20+j
]);
390 fir_filter_value
+= qcelp_rnd_fir_coefs
[10] * rnd
[-10];
391 *cdn_vector
++ = tmp_gain
* fir_filter_value
;
395 memcpy(q
->rnd_fir_filter_mem
, q
->rnd_fir_filter_mem
+ 160, 20 * sizeof(float));
398 cbseed
= q
->first16bits
;
401 tmp_gain
= gain
[i
] * (QCELP_SQRT1887
/ 32768.0);
404 cbseed
= 521 * cbseed
+ 259;
405 *cdn_vector
++ = tmp_gain
* (int16_t)cbseed
;
410 cbseed
= -44; // random codebook index
413 tmp_gain
= gain
[i
] * QCELP_RATE_FULL_CODEBOOK_RATIO
;
415 *cdn_vector
++ = tmp_gain
* qcelp_rate_full_codebook
[cbseed
++ & 127];
422 * Apply generic gain control.
424 * @param v_out output vector
425 * @param v_in gain-controlled vector
426 * @param v_ref vector to control gain of
428 * FIXME: If v_ref is a zero vector, it energy is zero
429 * and the behavior of the gain control is
430 * undefined in the specs.
432 * TIA/EIA/IS-733 2.4.8.3-2/3/4/5, 2.4.8.6
434 static void apply_gain_ctrl(float *v_out
, const float *v_ref
,
440 for(i
=0, j
=0; i
<4; i
++)
442 scalefactor
= ff_dot_productf(v_in
+ j
, v_in
+ j
, 40);
444 scalefactor
= sqrt(ff_dot_productf(v_ref
+ j
, v_ref
+ j
, 40)
447 ff_log_missing_feature(NULL
, "Zero energy for gain control", 1);
448 for(len
=j
+40; j
<len
; j
++)
449 v_out
[j
] = scalefactor
* v_in
[j
];
454 * Apply filter in pitch-subframe steps.
456 * @param memory buffer for the previous state of the filter
457 * - must be able to contain 303 elements
458 * - the 143 first elements are from the previous state
459 * - the next 160 are for output
460 * @param v_in input filter vector
461 * @param gain per-subframe gain array, each element is between 0.0 and 2.0
462 * @param lag per-subframe lag array, each element is
463 * - between 16 and 143 if its corresponding pfrac is 0,
464 * - between 16 and 139 otherwise
465 * @param pfrac per-subframe boolean array, 1 if the lag is fractional, 0
468 * @return filter output vector
470 static const float *do_pitchfilter(float memory
[303], const float v_in
[160],
471 const float gain
[4], const uint8_t *lag
,
472 const uint8_t pfrac
[4])
475 float *v_lag
, *v_out
;
478 v_out
= memory
+ 143; // Output vector starts at memory[143].
484 v_lag
= memory
+ 143 + 40 * i
- lag
[i
];
485 for(v_len
=v_in
+40; v_in
<v_len
; v_in
++)
487 if(pfrac
[i
]) // If it is a fractional lag...
489 for(j
=0, *v_out
=0.; j
<4; j
++)
490 *v_out
+= qcelp_hammsinc_table
[j
] * (v_lag
[j
-4] + v_lag
[3-j
]);
494 *v_out
= *v_in
+ gain
[i
] * *v_out
;
501 memcpy(v_out
, v_in
, 40 * sizeof(float));
507 memmove(memory
, memory
+ 160, 143 * sizeof(float));
512 * Apply pitch synthesis filter and pitch prefilter to the scaled codebook vector.
513 * TIA/EIA/IS-733 2.4.5.2
515 * @param q the context
516 * @param cdn_vector the scaled codebook vector
518 static void apply_pitch_filters(QCELPContext
*q
, float *cdn_vector
)
521 const float *v_synthesis_filtered
, *v_pre_filtered
;
523 if(q
->bitrate
>= RATE_HALF
||
524 (q
->bitrate
== I_F_Q
&& (q
->prev_bitrate
>= RATE_HALF
)))
527 if(q
->bitrate
>= RATE_HALF
)
530 // Compute gain & lag for the whole frame.
533 q
->pitch_gain
[i
] = q
->frame
.plag
[i
] ? (q
->frame
.pgain
[i
] + 1) * 0.25 : 0.0;
535 q
->pitch_lag
[i
] = q
->frame
.plag
[i
] + 16;
539 float max_pitch_gain
= q
->erasure_count
< 3 ? 0.9 - 0.3 * (q
->erasure_count
- 1) : 0.0;
541 q
->pitch_gain
[i
] = FFMIN(q
->pitch_gain
[i
], max_pitch_gain
);
543 memset(q
->frame
.pfrac
, 0, sizeof(q
->frame
.pfrac
));
546 // pitch synthesis filter
547 v_synthesis_filtered
= do_pitchfilter(q
->pitch_synthesis_filter_mem
,
548 cdn_vector
, q
->pitch_gain
,
549 q
->pitch_lag
, q
->frame
.pfrac
);
551 // pitch prefilter update
553 q
->pitch_gain
[i
] = 0.5 * FFMIN(q
->pitch_gain
[i
], 1.0);
555 v_pre_filtered
= do_pitchfilter(q
->pitch_pre_filter_mem
,
556 v_synthesis_filtered
,
557 q
->pitch_gain
, q
->pitch_lag
,
560 apply_gain_ctrl(cdn_vector
, v_synthesis_filtered
, v_pre_filtered
);
563 memcpy(q
->pitch_synthesis_filter_mem
, cdn_vector
+ 17,
564 143 * sizeof(float));
565 memcpy(q
->pitch_pre_filter_mem
, cdn_vector
+ 17, 143 * sizeof(float));
566 memset(q
->pitch_gain
, 0, sizeof(q
->pitch_gain
));
567 memset(q
->pitch_lag
, 0, sizeof(q
->pitch_lag
));
572 * Interpolates LSP frequencies and computes LPC coefficients
573 * for a given bitrate & pitch subframe.
575 * TIA/EIA/IS-733 2.4.3.3.4
577 * @param q the context
578 * @param curr_lspf LSP frequencies vector of the current frame
579 * @param lpc float vector for the resulting LPC
580 * @param subframe_num frame number in decoded stream
582 void interpolate_lpc(QCELPContext
*q
, const float *curr_lspf
, float *lpc
,
583 const int subframe_num
)
585 float interpolated_lspf
[10];
588 if(q
->bitrate
>= RATE_QUARTER
)
589 weight
= 0.25 * (subframe_num
+ 1);
590 else if(q
->bitrate
== RATE_OCTAVE
&& !subframe_num
)
597 weighted_vector_sumf(interpolated_lspf
, curr_lspf
, q
->prev_lspf
,
598 weight
, 1.0 - weight
, 10);
599 ff_qcelp_lspf2lpc(interpolated_lspf
, lpc
);
600 }else if(q
->bitrate
>= RATE_QUARTER
||
601 (q
->bitrate
== I_F_Q
&& !subframe_num
))
602 ff_qcelp_lspf2lpc(curr_lspf
, lpc
);
605 static qcelp_packet_rate
buf_size2bitrate(const int buf_size
)
609 case 35: return RATE_FULL
;
610 case 17: return RATE_HALF
;
611 case 8: return RATE_QUARTER
;
612 case 4: return RATE_OCTAVE
;
613 case 1: return SILENCE
;
620 * Determine the bitrate from the frame size and/or the first byte of the frame.
622 * @param avctx the AV codec context
623 * @param buf_size length of the buffer
624 * @param buf the bufffer
626 * @return the bitrate on success,
627 * I_F_Q if the bitrate cannot be satisfactorily determined
629 * TIA/EIA/IS-733 2.4.8.7.1
631 static int determine_bitrate(AVCodecContext
*avctx
, const int buf_size
,
634 qcelp_packet_rate bitrate
;
636 if((bitrate
= buf_size2bitrate(buf_size
)) >= 0)
640 QCELPContext
*q
= avctx
->priv_data
;
641 if (!q
->warned_buf_mismatch_bitrate
)
643 av_log(avctx
, AV_LOG_WARNING
,
644 "Claimed bitrate and buffer size mismatch.\n");
645 q
->warned_buf_mismatch_bitrate
= 1;
648 }else if(bitrate
< **buf
)
650 av_log(avctx
, AV_LOG_ERROR
,
651 "Buffer is too small for the claimed bitrate.\n");
655 }else if((bitrate
= buf_size2bitrate(buf_size
+ 1)) >= 0)
657 av_log(avctx
, AV_LOG_WARNING
,
658 "Bitrate byte is missing, guessing the bitrate from packet size.\n");
662 if(bitrate
== SILENCE
)
664 // FIXME: the decoder should not handle SILENCE frames as I_F_Q frames
665 ff_log_missing_feature(avctx
, "Blank frame", 1);
671 static void warn_insufficient_frame_quality(AVCodecContext
*avctx
,
674 av_log(avctx
, AV_LOG_WARNING
, "Frame #%d, IFQ: %s\n", avctx
->frame_number
,
678 static int qcelp_decode_frame(AVCodecContext
*avctx
, void *data
, int *data_size
,
679 const uint8_t *buf
, int buf_size
)
681 QCELPContext
*q
= avctx
->priv_data
;
682 float *outbuffer
= data
;
684 float quantized_lspf
[10], lpc
[10];
688 if((q
->bitrate
= determine_bitrate(avctx
, buf_size
, &buf
)) == I_F_Q
)
690 warn_insufficient_frame_quality(avctx
, "bitrate cannot be determined.");
694 if(q
->bitrate
== RATE_OCTAVE
&&
695 (q
->first16bits
= AV_RB16(buf
)) == 0xFFFF)
697 warn_insufficient_frame_quality(avctx
, "Bitrate is 1/8 and first 16 bits are on.");
701 if(q
->bitrate
> SILENCE
)
703 const QCELPBitmap
*bitmaps
= qcelp_unpacking_bitmaps_per_rate
[q
->bitrate
];
704 const QCELPBitmap
*bitmaps_end
= qcelp_unpacking_bitmaps_per_rate
[q
->bitrate
]
705 + qcelp_unpacking_bitmaps_lengths
[q
->bitrate
];
706 uint8_t *unpacked_data
= (uint8_t *)&q
->frame
;
708 init_get_bits(&q
->gb
, buf
, 8*buf_size
);
710 memset(&q
->frame
, 0, sizeof(QCELPFrame
));
712 for(; bitmaps
< bitmaps_end
; bitmaps
++)
713 unpacked_data
[bitmaps
->index
] |= get_bits(&q
->gb
, bitmaps
->bitlen
) << bitmaps
->bitpos
;
715 // Check for erasures/blanks on rates 1, 1/4 and 1/8.
716 if(q
->frame
.reserved
)
718 warn_insufficient_frame_quality(avctx
, "Wrong data in reserved frame area.");
721 if(q
->bitrate
== RATE_QUARTER
&&
722 codebook_sanity_check_for_rate_quarter(q
->frame
.cbgain
))
724 warn_insufficient_frame_quality(avctx
, "Codebook gain sanity check failed.");
728 if(q
->bitrate
>= RATE_HALF
)
732 if(q
->frame
.pfrac
[i
] && q
->frame
.plag
[i
] >= 124)
734 warn_insufficient_frame_quality(avctx
, "Cannot initialize pitch filter.");
741 decode_gain_and_index(q
, gain
);
742 compute_svector(q
, gain
, outbuffer
);
744 if(decode_lspf(q
, quantized_lspf
) < 0)
746 warn_insufficient_frame_quality(avctx
, "Badly received packets in frame.");
751 apply_pitch_filters(q
, outbuffer
);
753 if(q
->bitrate
== I_F_Q
)
758 decode_gain_and_index(q
, gain
);
759 compute_svector(q
, gain
, outbuffer
);
760 decode_lspf(q
, quantized_lspf
);
761 apply_pitch_filters(q
, outbuffer
);
763 q
->erasure_count
= 0;
765 formant_mem
= q
->formant_mem
+ 10;
768 interpolate_lpc(q
, quantized_lspf
, lpc
, i
);
769 ff_celp_lp_synthesis_filterf(formant_mem
, lpc
, outbuffer
+ i
* 40, 40,
773 memcpy(q
->formant_mem
, q
->formant_mem
+ 160, 10 * sizeof(float));
775 // FIXME: postfilter and final gain control should be here.
776 // TIA/EIA/IS-733 2.4.8.6
778 formant_mem
= q
->formant_mem
+ 10;
780 *outbuffer
++ = av_clipf(*formant_mem
++, QCELP_CLIP_LOWER_BOUND
,
781 QCELP_CLIP_UPPER_BOUND
);
783 memcpy(q
->prev_lspf
, quantized_lspf
, sizeof(q
->prev_lspf
));
784 q
->prev_bitrate
= q
->bitrate
;
786 *data_size
= 160 * sizeof(*outbuffer
);
791 AVCodec qcelp_decoder
=
794 .type
= CODEC_TYPE_AUDIO
,
795 .id
= CODEC_ID_QCELP
,
796 .init
= qcelp_decode_init
,
797 .decode
= qcelp_decode_frame
,
798 .priv_data_size
= sizeof(QCELPContext
),
799 .long_name
= NULL_IF_CONFIG_SMALL("QCELP / PureVoice"),