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-rw-r--r--apps/codecs/libspeex/nb_celp.c1917
1 files changed, 0 insertions, 1917 deletions
diff --git a/apps/codecs/libspeex/nb_celp.c b/apps/codecs/libspeex/nb_celp.c
deleted file mode 100644
index 364f987472..0000000000
--- a/apps/codecs/libspeex/nb_celp.c
+++ /dev/null
@@ -1,1917 +0,0 @@
-/* Copyright (C) 2002-2006 Jean-Marc Valin
- File: nb_celp.c
-
- Redistribution and use in source and binary forms, with or without
- modification, are permitted provided that the following conditions
- are met:
-
- - Redistributions of source code must retain the above copyright
- notice, this list of conditions and the following disclaimer.
-
- - Redistributions in binary form must reproduce the above copyright
- notice, this list of conditions and the following disclaimer in the
- documentation and/or other materials provided with the distribution.
-
- - Neither the name of the Xiph.org Foundation nor the names of its
- contributors may be used to endorse or promote products derived from
- this software without specific prior written permission.
-
- THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
- A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR
- CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
- EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
- PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
- PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
- LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
- NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
- SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-*/
-
-#ifdef HAVE_CONFIG_H
-#include "config-speex.h"
-#endif
-
-#include <math.h>
-#include "nb_celp.h"
-#include "lpc.h"
-#include "lsp.h"
-#include "ltp.h"
-#include "quant_lsp.h"
-#include "cb_search.h"
-#include "filters.h"
-#include "stack_alloc.h"
-#include "vq.h"
-#include "speex/speex_bits.h"
-#include "vbr.h"
-#include "arch.h"
-#include "math_approx.h"
-#include "os_support.h"
-#include "speex/speex_callbacks.h"
-
-#ifdef VORBIS_PSYCHO
-#include "vorbis_psy.h"
-#endif
-
-#ifndef M_PI
-#define M_PI 3.14159265358979323846 /* pi */
-#endif
-
-#ifndef NULL
-#define NULL 0
-#endif
-
-#define SUBMODE(x) st->submodes[st->submodeID]->x
-
-/* Default size for the encoder and decoder stack (can be changed at compile time).
- This does not apply when using variable-size arrays or alloca. */
-#ifndef NB_ENC_STACK
-#define NB_ENC_STACK (8000*sizeof(spx_sig_t))
-#endif
-
-#ifndef NB_DEC_STACK
-#define NB_DEC_STACK (4000*sizeof(spx_sig_t))
-#endif
-
-
-#ifdef FIXED_POINT
-const spx_word32_t ol_gain_table[32] ICONST_ATTR = {18900, 25150, 33468, 44536, 59265, 78865, 104946, 139653, 185838, 247297, 329081, 437913, 582736, 775454, 1031906, 1373169, 1827293, 2431601, 3235761, 4305867, 5729870, 7624808, 10146425, 13501971, 17967238, 23909222, 31816294, 42338330, 56340132, 74972501, 99766822, 132760927};
-const spx_word16_t exc_gain_quant_scal3_bound[7] ICONST_ATTR = {1841, 3883, 6051, 8062, 10444, 13580, 18560};
-const spx_word16_t exc_gain_quant_scal3[8] ICONST_ATTR = {1002, 2680, 5086, 7016, 9108, 11781, 15380, 21740};
-const spx_word16_t exc_gain_quant_scal1_bound[1] ICONST_ATTR = {14385};
-const spx_word16_t exc_gain_quant_scal1[2] ICONST_ATTR = {11546, 17224};
-
-#define LSP_MARGIN 16
-#define LSP_DELTA1 6553
-#define LSP_DELTA2 1638
-
-#else
-
-const float exc_gain_quant_scal3_bound[7]={0.112338f, 0.236980f, 0.369316f, 0.492054f, 0.637471f, 0.828874f, 1.132784f};
-const float exc_gain_quant_scal3[8]={0.061130f, 0.163546f, 0.310413f, 0.428220f, 0.555887f, 0.719055f, 0.938694f, 1.326874f};
-const float exc_gain_quant_scal1_bound[1]={0.87798f};
-const float exc_gain_quant_scal1[2]={0.70469f, 1.05127f};
-
-#define LSP_MARGIN .002f
-#define LSP_DELTA1 .2f
-#define LSP_DELTA2 .05f
-
-#endif
-
-#ifdef VORBIS_PSYCHO
-#define EXTRA_BUFFER 100
-#else
-#define EXTRA_BUFFER 0
-#endif
-
-
-#define sqr(x) ((x)*(x))
-
-extern const spx_word16_t lag_window[];
-extern const spx_word16_t lpc_window[];
-
-#ifndef SPEEX_DISABLE_ENCODER
-void *nb_encoder_init(const SpeexMode *m)
-{
- EncState *st;
- const SpeexNBMode *mode;
- int i;
-
- mode=(const SpeexNBMode *)m->mode;
- st = (EncState*)speex_alloc(sizeof(EncState));
- if (!st)
- return NULL;
-#if defined(VAR_ARRAYS) || defined (USE_ALLOCA)
- st->stack = NULL;
-#else
- st->stack = (char*)speex_alloc_scratch(NB_ENC_STACK);
-#endif
-
- st->mode=m;
-
- st->frameSize = mode->frameSize;
- st->nbSubframes=mode->frameSize/mode->subframeSize;
- st->subframeSize=mode->subframeSize;
- st->windowSize = st->frameSize+st->subframeSize;
- st->lpcSize = mode->lpcSize;
- st->gamma1=mode->gamma1;
- st->gamma2=mode->gamma2;
- st->min_pitch=mode->pitchStart;
- st->max_pitch=mode->pitchEnd;
- st->lpc_floor = mode->lpc_floor;
-
- st->submodes=mode->submodes;
- st->submodeID=st->submodeSelect=mode->defaultSubmode;
- st->bounded_pitch = 1;
-
- st->encode_submode = 1;
-
-#ifdef VORBIS_PSYCHO
- st->psy = vorbis_psy_init(8000, 256);
- st->curve = (float*)speex_alloc(128*sizeof(float));
- st->old_curve = (float*)speex_alloc(128*sizeof(float));
- st->psy_window = (float*)speex_alloc(256*sizeof(float));
-#endif
-
- st->cumul_gain = 1024;
-
- /* Allocating input buffer */
- st->winBuf = (spx_word16_t*)speex_alloc((st->windowSize-st->frameSize)*sizeof(spx_word16_t));
- /* Allocating excitation buffer */
- st->excBuf = (spx_word16_t*)speex_alloc((mode->frameSize+mode->pitchEnd+2)*sizeof(spx_word16_t));
- st->exc = st->excBuf + mode->pitchEnd + 2;
- st->swBuf = (spx_word16_t*)speex_alloc((mode->frameSize+mode->pitchEnd+2)*sizeof(spx_word16_t));
- st->sw = st->swBuf + mode->pitchEnd + 2;
-
- st->window= lpc_window;
-
- /* Create the window for autocorrelation (lag-windowing) */
- st->lagWindow = lag_window;
-
- st->old_lsp = (spx_lsp_t*)speex_alloc((st->lpcSize)*sizeof(spx_lsp_t));
- st->old_qlsp = (spx_lsp_t*)speex_alloc((st->lpcSize)*sizeof(spx_lsp_t));
- st->first = 1;
- for (i=0;i<st->lpcSize;i++)
- st->old_lsp[i]= DIV32(MULT16_16(QCONST16(3.1415927f, LSP_SHIFT), i+1), st->lpcSize+1);
-
- st->mem_sp = (spx_mem_t*)speex_alloc((st->lpcSize)*sizeof(spx_mem_t));
- st->mem_sw = (spx_mem_t*)speex_alloc((st->lpcSize)*sizeof(spx_mem_t));
- st->mem_sw_whole = (spx_mem_t*)speex_alloc((st->lpcSize)*sizeof(spx_mem_t));
- st->mem_exc = (spx_mem_t*)speex_alloc((st->lpcSize)*sizeof(spx_mem_t));
- st->mem_exc2 = (spx_mem_t*)speex_alloc((st->lpcSize)*sizeof(spx_mem_t));
-
- st->pi_gain = (spx_word32_t*)speex_alloc((st->nbSubframes)*sizeof(spx_word32_t));
- st->innov_rms_save = NULL;
-
- st->pitch = (int*)speex_alloc((st->nbSubframes)*sizeof(int));
-
-#ifndef DISABLE_VBR
- st->vbr = (VBRState*)speex_alloc(sizeof(VBRState));
- vbr_init(st->vbr);
- st->vbr_quality = 8;
- st->vbr_enabled = 0;
- st->vbr_max = 0;
- st->vad_enabled = 0;
- st->dtx_enabled = 0;
- st->dtx_count=0;
- st->abr_enabled = 0;
- st->abr_drift = 0;
- st->abr_drift2 = 0;
-#endif /* #ifndef DISABLE_VBR */
-
- st->plc_tuning = 2;
- st->complexity=2;
- st->sampling_rate=8000;
- st->isWideband = 0;
- st->highpass_enabled = 1;
-
-#ifdef ENABLE_VALGRIND
- VALGRIND_MAKE_READABLE(st, NB_ENC_STACK);
-#endif
- return st;
-}
-
-void nb_encoder_destroy(void *state)
-{
- EncState *st=(EncState *)state;
- /* Free all allocated memory */
-#if !(defined(VAR_ARRAYS) || defined (USE_ALLOCA))
- speex_free_scratch(st->stack);
-#endif
-
- speex_free (st->winBuf);
- speex_free (st->excBuf);
- speex_free (st->old_qlsp);
- speex_free (st->swBuf);
-
- speex_free (st->old_lsp);
- speex_free (st->mem_sp);
- speex_free (st->mem_sw);
- speex_free (st->mem_sw_whole);
- speex_free (st->mem_exc);
- speex_free (st->mem_exc2);
- speex_free (st->pi_gain);
- speex_free (st->pitch);
-
-#ifndef DISABLE_VBR
- vbr_destroy(st->vbr);
- speex_free (st->vbr);
-#endif /* #ifndef DISABLE_VBR */
-
-#ifdef VORBIS_PSYCHO
- vorbis_psy_destroy(st->psy);
- speex_free (st->curve);
- speex_free (st->old_curve);
- speex_free (st->psy_window);
-#endif
-
- /*Free state memory... should be last*/
- speex_free(st);
-}
-
-int nb_encode(void *state, void *vin, SpeexBits *bits)
-{
- EncState *st;
- int i, sub, roots;
- int ol_pitch;
- spx_word16_t ol_pitch_coef;
- spx_word32_t ol_gain;
- VARDECL(spx_word16_t *ringing);
- VARDECL(spx_word16_t *target);
- VARDECL(spx_sig_t *innov);
- VARDECL(spx_word32_t *exc32);
- VARDECL(spx_mem_t *mem);
- VARDECL(spx_coef_t *bw_lpc1);
- VARDECL(spx_coef_t *bw_lpc2);
- VARDECL(spx_coef_t *lpc);
- VARDECL(spx_lsp_t *lsp);
- VARDECL(spx_lsp_t *qlsp);
- VARDECL(spx_lsp_t *interp_lsp);
- VARDECL(spx_lsp_t *interp_qlsp);
- VARDECL(spx_coef_t *interp_lpc);
- VARDECL(spx_coef_t *interp_qlpc);
- char *stack;
- VARDECL(spx_word16_t *syn_resp);
- VARDECL(spx_word16_t *real_exc);
-
- spx_word32_t ener=0;
- spx_word16_t fine_gain;
- spx_word16_t *in = (spx_word16_t*)vin;
-
- st=(EncState *)state;
- stack=st->stack;
-
- ALLOC(lpc, st->lpcSize, spx_coef_t);
- ALLOC(bw_lpc1, st->lpcSize, spx_coef_t);
- ALLOC(bw_lpc2, st->lpcSize, spx_coef_t);
- ALLOC(lsp, st->lpcSize, spx_lsp_t);
- ALLOC(qlsp, st->lpcSize, spx_lsp_t);
- ALLOC(interp_lsp, st->lpcSize, spx_lsp_t);
- ALLOC(interp_qlsp, st->lpcSize, spx_lsp_t);
- ALLOC(interp_lpc, st->lpcSize, spx_coef_t);
- ALLOC(interp_qlpc, st->lpcSize, spx_coef_t);
-
- /* Move signals 1 frame towards the past */
- SPEEX_MOVE(st->excBuf, st->excBuf+st->frameSize, st->max_pitch+2);
- SPEEX_MOVE(st->swBuf, st->swBuf+st->frameSize, st->max_pitch+2);
-
- if (st->highpass_enabled)
- highpass(in, in, st->frameSize, (st->isWideband?HIGHPASS_WIDEBAND:HIGHPASS_NARROWBAND)|HIGHPASS_INPUT, st->mem_hp);
-
- {
- VARDECL(spx_word16_t *w_sig);
- VARDECL(spx_word16_t *autocorr);
- ALLOC(w_sig, st->windowSize, spx_word16_t);
- ALLOC(autocorr, st->lpcSize+1, spx_word16_t);
- /* Window for analysis */
- for (i=0;i<st->windowSize-st->frameSize;i++)
- w_sig[i] = EXTRACT16(SHR32(MULT16_16(st->winBuf[i],st->window[i]),SIG_SHIFT));
- for (;i<st->windowSize;i++)
- w_sig[i] = EXTRACT16(SHR32(MULT16_16(in[i-st->windowSize+st->frameSize],st->window[i]),SIG_SHIFT));
- /* Compute auto-correlation */
- _spx_autocorr(w_sig, autocorr, st->lpcSize+1, st->windowSize);
- autocorr[0] = ADD16(autocorr[0],MULT16_16_Q15(autocorr[0],st->lpc_floor)); /* Noise floor in auto-correlation domain */
-
- /* Lag windowing: equivalent to filtering in the power-spectrum domain */
- for (i=0;i<st->lpcSize+1;i++)
- autocorr[i] = MULT16_16_Q14(autocorr[i],st->lagWindow[i]);
-
- /* Levinson-Durbin */
- _spx_lpc(lpc, autocorr, st->lpcSize);
- /* LPC to LSPs (x-domain) transform */
- roots=lpc_to_lsp (lpc, st->lpcSize, lsp, 10, LSP_DELTA1, stack);
- /* Check if we found all the roots */
- if (roots!=st->lpcSize)
- {
- /*If we can't find all LSP's, do some damage control and use previous filter*/
- for (i=0;i<st->lpcSize;i++)
- {
- lsp[i]=st->old_lsp[i];
- }
- }
- }
-
-
-
-
- /* Whole frame analysis (open-loop estimation of pitch and excitation gain) */
- {
- int diff = st->windowSize-st->frameSize;
- if (st->first)
- for (i=0;i<st->lpcSize;i++)
- interp_lsp[i] = lsp[i];
- else
- lsp_interpolate(st->old_lsp, lsp, interp_lsp, st->lpcSize, st->nbSubframes, st->nbSubframes<<1);
-
- lsp_enforce_margin(interp_lsp, st->lpcSize, LSP_MARGIN);
-
- /* Compute interpolated LPCs (unquantized) for whole frame*/
- lsp_to_lpc(interp_lsp, interp_lpc, st->lpcSize,stack);
-
-
- /*Open-loop pitch*/
- if (!st->submodes[st->submodeID] || (st->complexity>2 && SUBMODE(have_subframe_gain)<3) || SUBMODE(forced_pitch_gain) || SUBMODE(lbr_pitch) != -1
-#ifndef DISABLE_VBR
- || st->vbr_enabled || st->vad_enabled
-#endif
- )
- {
- int nol_pitch[6];
- spx_word16_t nol_pitch_coef[6];
-
- bw_lpc(st->gamma1, interp_lpc, bw_lpc1, st->lpcSize);
- bw_lpc(st->gamma2, interp_lpc, bw_lpc2, st->lpcSize);
-
- SPEEX_COPY(st->sw, st->winBuf, diff);
- SPEEX_COPY(st->sw+diff, in, st->frameSize-diff);
- filter_mem16(st->sw, bw_lpc1, bw_lpc2, st->sw, st->frameSize, st->lpcSize, st->mem_sw_whole, stack);
-
- open_loop_nbest_pitch(st->sw, st->min_pitch, st->max_pitch, st->frameSize,
- nol_pitch, nol_pitch_coef, 6, stack);
- ol_pitch=nol_pitch[0];
- ol_pitch_coef = nol_pitch_coef[0];
- /*Try to remove pitch multiples*/
- for (i=1;i<6;i++)
- {
-#ifdef FIXED_POINT
- if ((nol_pitch_coef[i]>MULT16_16_Q15(nol_pitch_coef[0],27853)) &&
-#else
- if ((nol_pitch_coef[i]>.85*nol_pitch_coef[0]) &&
-#endif
- (ABS(2*nol_pitch[i]-ol_pitch)<=2 || ABS(3*nol_pitch[i]-ol_pitch)<=3 ||
- ABS(4*nol_pitch[i]-ol_pitch)<=4 || ABS(5*nol_pitch[i]-ol_pitch)<=5))
- {
- /*ol_pitch_coef=nol_pitch_coef[i];*/
- ol_pitch = nol_pitch[i];
- }
- }
- /*if (ol_pitch>50)
- ol_pitch/=2;*/
- /*ol_pitch_coef = sqrt(ol_pitch_coef);*/
-
- } else {
- ol_pitch=0;
- ol_pitch_coef=0;
- }
-
- /*Compute "real" excitation*/
- SPEEX_COPY(st->exc, st->winBuf, diff);
- SPEEX_COPY(st->exc+diff, in, st->frameSize-diff);
- fir_mem16(st->exc, interp_lpc, st->exc, st->frameSize, st->lpcSize, st->mem_exc, stack);
-
- /* Compute open-loop excitation gain */
- {
- spx_word16_t g = compute_rms16(st->exc, st->frameSize);
- if (st->submodeID!=1 && ol_pitch>0)
- ol_gain = MULT16_16(g, MULT16_16_Q14(QCONST16(1.1,14),
- spx_sqrt(QCONST32(1.,28)-MULT16_32_Q15(QCONST16(.8,15),SHL32(MULT16_16(ol_pitch_coef,ol_pitch_coef),16)))));
- else
- ol_gain = SHL32(EXTEND32(g),SIG_SHIFT);
- }
- }
-
-#ifdef VORBIS_PSYCHO
- SPEEX_MOVE(st->psy_window, st->psy_window+st->frameSize, 256-st->frameSize);
- SPEEX_COPY(&st->psy_window[256-st->frameSize], in, st->frameSize);
- compute_curve(st->psy, st->psy_window, st->curve);
- /*print_vec(st->curve, 128, "curve");*/
- if (st->first)
- SPEEX_COPY(st->old_curve, st->curve, 128);
-#endif
-
- /*VBR stuff*/
-#ifndef DISABLE_VBR
- if (st->vbr && (st->vbr_enabled||st->vad_enabled))
- {
- float lsp_dist=0;
- for (i=0;i<st->lpcSize;i++)
- lsp_dist += (st->old_lsp[i] - lsp[i])*(st->old_lsp[i] - lsp[i]);
- lsp_dist /= LSP_SCALING*LSP_SCALING;
-
- if (st->abr_enabled)
- {
- float qual_change=0;
- if (st->abr_drift2 * st->abr_drift > 0)
- {
- /* Only adapt if long-term and short-term drift are the same sign */
- qual_change = -.00001*st->abr_drift/(1+st->abr_count);
- if (qual_change>.05)
- qual_change=.05;
- if (qual_change<-.05)
- qual_change=-.05;
- }
- st->vbr_quality += qual_change;
- if (st->vbr_quality>10)
- st->vbr_quality=10;
- if (st->vbr_quality<0)
- st->vbr_quality=0;
- }
-
- st->relative_quality = vbr_analysis(st->vbr, in, st->frameSize, ol_pitch, GAIN_SCALING_1*ol_pitch_coef);
- /*if (delta_qual<0)*/
- /* delta_qual*=.1*(3+st->vbr_quality);*/
- if (st->vbr_enabled)
- {
- spx_int32_t mode;
- int choice=0;
- float min_diff=100;
- mode = 8;
- while (mode)
- {
- int v1;
- float thresh;
- v1=(int)floor(st->vbr_quality);
- if (v1==10)
- thresh = vbr_nb_thresh[mode][v1];
- else
- thresh = (st->vbr_quality-v1)*vbr_nb_thresh[mode][v1+1] + (1+v1-st->vbr_quality)*vbr_nb_thresh[mode][v1];
- if (st->relative_quality > thresh &&
- st->relative_quality-thresh<min_diff)
- {
- choice = mode;
- min_diff = st->relative_quality-thresh;
- }
- mode--;
- }
- mode=choice;
- if (mode==0)
- {
- if (st->dtx_count==0 || lsp_dist>.05 || !st->dtx_enabled || st->dtx_count>20)
- {
- mode=1;
- st->dtx_count=1;
- } else {
- mode=0;
- st->dtx_count++;
- }
- } else {
- st->dtx_count=0;
- }
-
- speex_encoder_ctl(state, SPEEX_SET_MODE, &mode);
- if (st->vbr_max>0)
- {
- spx_int32_t rate;
- speex_encoder_ctl(state, SPEEX_GET_BITRATE, &rate);
- if (rate > st->vbr_max)
- {
- rate = st->vbr_max;
- speex_encoder_ctl(state, SPEEX_SET_BITRATE, &rate);
- }
- }
-
- if (st->abr_enabled)
- {
- spx_int32_t bitrate;
- speex_encoder_ctl(state, SPEEX_GET_BITRATE, &bitrate);
- st->abr_drift+=(bitrate-st->abr_enabled);
- st->abr_drift2 = .95*st->abr_drift2 + .05*(bitrate-st->abr_enabled);
- st->abr_count += 1.0;
- }
-
- } else {
- /*VAD only case*/
- int mode;
- if (st->relative_quality<2)
- {
- if (st->dtx_count==0 || lsp_dist>.05 || !st->dtx_enabled || st->dtx_count>20)
- {
- st->dtx_count=1;
- mode=1;
- } else {
- mode=0;
- st->dtx_count++;
- }
- } else {
- st->dtx_count = 0;
- mode=st->submodeSelect;
- }
- /*speex_encoder_ctl(state, SPEEX_SET_MODE, &mode);*/
- st->submodeID=mode;
- }
- } else {
- st->relative_quality = -1;
- }
-#endif /* #ifndef DISABLE_VBR */
-
- if (st->encode_submode)
- {
- /* First, transmit a zero for narrowband */
- speex_bits_pack(bits, 0, 1);
-
- /* Transmit the sub-mode we use for this frame */
- speex_bits_pack(bits, st->submodeID, NB_SUBMODE_BITS);
-
- }
-
- /* If null mode (no transmission), just set a couple things to zero*/
- if (st->submodes[st->submodeID] == NULL)
- {
- for (i=0;i<st->frameSize;i++)
- st->exc[i]=st->sw[i]=VERY_SMALL;
-
- for (i=0;i<st->lpcSize;i++)
- st->mem_sw[i]=0;
- st->first=1;
- st->bounded_pitch = 1;
-
- SPEEX_COPY(st->winBuf, in+2*st->frameSize-st->windowSize, st->windowSize-st->frameSize);
-
- /* Clear memory (no need to really compute it) */
- for (i=0;i<st->lpcSize;i++)
- st->mem_sp[i] = 0;
- return 0;
-
- }
-
- /* LSP Quantization */
- if (st->first)
- {
- for (i=0;i<st->lpcSize;i++)
- st->old_lsp[i] = lsp[i];
- }
-
-
- /*Quantize LSPs*/
-#if 1 /*0 for unquantized*/
- SUBMODE(lsp_quant)(lsp, qlsp, st->lpcSize, bits);
-#else
- for (i=0;i<st->lpcSize;i++)
- qlsp[i]=lsp[i];
-#endif
-
- /*If we use low bit-rate pitch mode, transmit open-loop pitch*/
- if (SUBMODE(lbr_pitch)!=-1)
- {
- speex_bits_pack(bits, ol_pitch-st->min_pitch, 7);
- }
-
- if (SUBMODE(forced_pitch_gain))
- {
- int quant;
- /* This just damps the pitch a bit, because it tends to be too aggressive when forced */
- ol_pitch_coef = MULT16_16_Q15(QCONST16(.9,15), ol_pitch_coef);
-#ifdef FIXED_POINT
- quant = PSHR16(MULT16_16_16(15, ol_pitch_coef),GAIN_SHIFT);
-#else
- quant = (int)floor(.5+15*ol_pitch_coef*GAIN_SCALING_1);
-#endif
- if (quant>15)
- quant=15;
- if (quant<0)
- quant=0;
- speex_bits_pack(bits, quant, 4);
- ol_pitch_coef=MULT16_16_P15(QCONST16(0.066667,15),SHL16(quant,GAIN_SHIFT));
- }
-
-
- /*Quantize and transmit open-loop excitation gain*/
-#ifdef FIXED_POINT
- {
- int qe = scal_quant32(ol_gain, ol_gain_table, 32);
- /*ol_gain = exp(qe/3.5)*SIG_SCALING;*/
- ol_gain = MULT16_32_Q15(28406,ol_gain_table[qe]);
- speex_bits_pack(bits, qe, 5);
- }
-#else
- {
- int qe = (int)(floor(.5+3.5*log(ol_gain*1.0/SIG_SCALING)));
- if (qe<0)
- qe=0;
- if (qe>31)
- qe=31;
- ol_gain = exp(qe/3.5)*SIG_SCALING;
- speex_bits_pack(bits, qe, 5);
- }
-#endif
-
-
-
- /* Special case for first frame */
- if (st->first)
- {
- for (i=0;i<st->lpcSize;i++)
- st->old_qlsp[i] = qlsp[i];
- }
-
- /* Target signal */
- ALLOC(target, st->subframeSize, spx_word16_t);
- ALLOC(innov, st->subframeSize, spx_sig_t);
- ALLOC(exc32, st->subframeSize, spx_word32_t);
- ALLOC(ringing, st->subframeSize, spx_word16_t);
- ALLOC(syn_resp, st->subframeSize, spx_word16_t);
- ALLOC(real_exc, st->subframeSize, spx_word16_t);
- ALLOC(mem, st->lpcSize, spx_mem_t);
-
- /* Loop on sub-frames */
- for (sub=0;sub<st->nbSubframes;sub++)
- {
- int offset;
- spx_word16_t *sw;
- spx_word16_t *exc;
- int pitch;
- int response_bound = st->subframeSize;
-
- /* Offset relative to start of frame */
- offset = st->subframeSize*sub;
- /* Excitation */
- exc=st->exc+offset;
- /* Weighted signal */
- sw=st->sw+offset;
-
- /* LSP interpolation (quantized and unquantized) */
- lsp_interpolate(st->old_lsp, lsp, interp_lsp, st->lpcSize, sub, st->nbSubframes);
- lsp_interpolate(st->old_qlsp, qlsp, interp_qlsp, st->lpcSize, sub, st->nbSubframes);
-
- /* Make sure the filters are stable */
- lsp_enforce_margin(interp_lsp, st->lpcSize, LSP_MARGIN);
- lsp_enforce_margin(interp_qlsp, st->lpcSize, LSP_MARGIN);
-
- /* Compute interpolated LPCs (quantized and unquantized) */
- lsp_to_lpc(interp_lsp, interp_lpc, st->lpcSize,stack);
-
- lsp_to_lpc(interp_qlsp, interp_qlpc, st->lpcSize, stack);
-
- /* Compute analysis filter gain at w=pi (for use in SB-CELP) */
- {
- spx_word32_t pi_g=LPC_SCALING;
- for (i=0;i<st->lpcSize;i+=2)
- {
- /*pi_g += -st->interp_qlpc[i] + st->interp_qlpc[i+1];*/
- pi_g = ADD32(pi_g, SUB32(EXTEND32(interp_qlpc[i+1]),EXTEND32(interp_qlpc[i])));
- }
- st->pi_gain[sub] = pi_g;
- }
-
-#ifdef VORBIS_PSYCHO
- {
- float curr_curve[128];
- float fact = ((float)sub+1.0f)/st->nbSubframes;
- for (i=0;i<128;i++)
- curr_curve[i] = (1.0f-fact)*st->old_curve[i] + fact*st->curve[i];
- curve_to_lpc(st->psy, curr_curve, bw_lpc1, bw_lpc2, 10);
- }
-#else
- /* Compute bandwidth-expanded (unquantized) LPCs for perceptual weighting */
- bw_lpc(st->gamma1, interp_lpc, bw_lpc1, st->lpcSize);
- if (st->gamma2>=0)
- bw_lpc(st->gamma2, interp_lpc, bw_lpc2, st->lpcSize);
- else
- {
- for (i=0;i<st->lpcSize;i++)
- bw_lpc2[i]=0;
- }
- /*print_vec(st->bw_lpc1, 10, "bw_lpc");*/
-#endif
-
- /*FIXME: This will break if we change the window size */
- speex_assert(st->windowSize-st->frameSize == st->subframeSize);
- if (sub==0)
- {
- for (i=0;i<st->subframeSize;i++)
- real_exc[i] = sw[i] = st->winBuf[i];
- } else {
- for (i=0;i<st->subframeSize;i++)
- real_exc[i] = sw[i] = in[i+((sub-1)*st->subframeSize)];
- }
- fir_mem16(real_exc, interp_qlpc, real_exc, st->subframeSize, st->lpcSize, st->mem_exc2, stack);
-
- if (st->complexity==0)
- response_bound >>= 1;
- compute_impulse_response(interp_qlpc, bw_lpc1, bw_lpc2, syn_resp, response_bound, st->lpcSize, stack);
- for (i=response_bound;i<st->subframeSize;i++)
- syn_resp[i]=VERY_SMALL;
-
- /* Compute zero response of A(z/g1) / ( A(z/g2) * A(z) ) */
- for (i=0;i<st->lpcSize;i++)
- mem[i]=SHL32(st->mem_sp[i],1);
- for (i=0;i<st->subframeSize;i++)
- ringing[i] = VERY_SMALL;
-#ifdef SHORTCUTS2
- iir_mem16(ringing, interp_qlpc, ringing, response_bound, st->lpcSize, mem, stack);
- for (i=0;i<st->lpcSize;i++)
- mem[i]=SHL32(st->mem_sw[i],1);
- filter_mem16(ringing, st->bw_lpc1, st->bw_lpc2, ringing, response_bound, st->lpcSize, mem, stack);
- SPEEX_MEMSET(&ringing[response_bound], 0, st->subframeSize-response_bound);
-#else
- iir_mem16(ringing, interp_qlpc, ringing, st->subframeSize, st->lpcSize, mem, stack);
- for (i=0;i<st->lpcSize;i++)
- mem[i]=SHL32(st->mem_sw[i],1);
- filter_mem16(ringing, bw_lpc1, bw_lpc2, ringing, st->subframeSize, st->lpcSize, mem, stack);
-#endif
-
- /* Compute weighted signal */
- for (i=0;i<st->lpcSize;i++)
- mem[i]=st->mem_sw[i];
- filter_mem16(sw, bw_lpc1, bw_lpc2, sw, st->subframeSize, st->lpcSize, mem, stack);
-
- if (st->complexity==0)
- for (i=0;i<st->lpcSize;i++)
- st->mem_sw[i]=mem[i];
-
- /* Compute target signal (saturation prevents overflows on clipped input speech) */
- for (i=0;i<st->subframeSize;i++)
- target[i]=EXTRACT16(SATURATE(SUB32(sw[i],PSHR32(ringing[i],1)),32767));
-
- /* Reset excitation */
- SPEEX_MEMSET(exc, 0, st->subframeSize);
-
- /* If we have a long-term predictor (otherwise, something's wrong) */
- speex_assert (SUBMODE(ltp_quant));
- {
- int pit_min, pit_max;
- /* Long-term prediction */
- if (SUBMODE(lbr_pitch) != -1)
- {
- /* Low bit-rate pitch handling */
- int margin;
- margin = SUBMODE(lbr_pitch);
- if (margin)
- {
- if (ol_pitch < st->min_pitch+margin-1)
- ol_pitch=st->min_pitch+margin-1;
- if (ol_pitch > st->max_pitch-margin)
- ol_pitch=st->max_pitch-margin;
- pit_min = ol_pitch-margin+1;
- pit_max = ol_pitch+margin;
- } else {
- pit_min=pit_max=ol_pitch;
- }
- } else {
- pit_min = st->min_pitch;
- pit_max = st->max_pitch;
- }
-
- /* Force pitch to use only the current frame if needed */
- if (st->bounded_pitch && pit_max>offset)
- pit_max=offset;
-
- /* Perform pitch search */
- pitch = SUBMODE(ltp_quant)(target, sw, interp_qlpc, bw_lpc1, bw_lpc2,
- exc32, SUBMODE(ltp_params), pit_min, pit_max, ol_pitch_coef,
- st->lpcSize, st->subframeSize, bits, stack,
- exc, syn_resp, st->complexity, 0, st->plc_tuning, &st->cumul_gain);
-
- st->pitch[sub]=pitch;
- }
- /* Quantization of innovation */
- SPEEX_MEMSET(innov, 0, st->subframeSize);
-
- /* FIXME: Make sure this is save from overflows (so far so good) */
- for (i=0;i<st->subframeSize;i++)
- real_exc[i] = EXTRACT16(SUB32(EXTEND32(real_exc[i]), PSHR32(exc32[i],SIG_SHIFT-1)));
-
- ener = SHL32(EXTEND32(compute_rms16(real_exc, st->subframeSize)),SIG_SHIFT);
-
- /*FIXME: Should use DIV32_16 and make sure result fits in 16 bits */
-#ifdef FIXED_POINT
- {
- spx_word32_t f = PDIV32(ener,PSHR32(ol_gain,SIG_SHIFT));
- if (f<=32767)
- fine_gain = f;
- else
- fine_gain = 32767;
- }
-#else
- fine_gain = PDIV32_16(ener,PSHR32(ol_gain,SIG_SHIFT));
-#endif
- /* Calculate gain correction for the sub-frame (if any) */
- if (SUBMODE(have_subframe_gain))
- {
- int qe;
- if (SUBMODE(have_subframe_gain)==3)
- {
- qe = scal_quant(fine_gain, exc_gain_quant_scal3_bound, 8);
- speex_bits_pack(bits, qe, 3);
- ener=MULT16_32_Q14(exc_gain_quant_scal3[qe],ol_gain);
- } else {
- qe = scal_quant(fine_gain, exc_gain_quant_scal1_bound, 2);
- speex_bits_pack(bits, qe, 1);
- ener=MULT16_32_Q14(exc_gain_quant_scal1[qe],ol_gain);
- }
- } else {
- ener=ol_gain;
- }
-
- /*printf ("%f %f\n", ener, ol_gain);*/
-
- /* Normalize innovation */
- signal_div(target, target, ener, st->subframeSize);
-
- /* Quantize innovation */
- speex_assert (SUBMODE(innovation_quant));
- {
- /* Codebook search */
- SUBMODE(innovation_quant)(target, interp_qlpc, bw_lpc1, bw_lpc2,
- SUBMODE(innovation_params), st->lpcSize, st->subframeSize,
- innov, syn_resp, bits, stack, st->complexity, SUBMODE(double_codebook));
-
- /* De-normalize innovation and update excitation */
- signal_mul(innov, innov, ener, st->subframeSize);
-
- for (i=0;i<st->subframeSize;i++)
- exc[i] = EXTRACT16(SATURATE32(PSHR32(ADD32(SHL32(exc32[i],1),innov[i]),SIG_SHIFT),32767));
-
- /* In some (rare) modes, we do a second search (more bits) to reduce noise even more */
- if (SUBMODE(double_codebook)) {
- char *tmp_stack=stack;
- VARDECL(spx_sig_t *innov2);
- ALLOC(innov2, st->subframeSize, spx_sig_t);
- SPEEX_MEMSET(innov2, 0, st->subframeSize);
- for (i=0;i<st->subframeSize;i++)
- target[i]=MULT16_16_P13(QCONST16(2.2f,13), target[i]);
- SUBMODE(innovation_quant)(target, interp_qlpc, bw_lpc1, bw_lpc2,
- SUBMODE(innovation_params), st->lpcSize, st->subframeSize,
- innov2, syn_resp, bits, stack, st->complexity, 0);
- signal_mul(innov2, innov2, MULT16_32_Q15(QCONST16(0.454545f,15),ener), st->subframeSize);
- for (i=0;i<st->subframeSize;i++)
- innov[i] = ADD32(innov[i],innov2[i]);
- stack = tmp_stack;
- }
- for (i=0;i<st->subframeSize;i++)
- exc[i] = EXTRACT16(SATURATE32(PSHR32(ADD32(SHL32(exc32[i],1),innov[i]),SIG_SHIFT),32767));
- if (st->innov_rms_save)
- {
- st->innov_rms_save[sub] = compute_rms(innov, st->subframeSize);
- }
- }
-
- /* Final signal synthesis from excitation */
- iir_mem16(exc, interp_qlpc, sw, st->subframeSize, st->lpcSize, st->mem_sp, stack);
-
- /* Compute weighted signal again, from synthesized speech (not sure it's the right thing) */
- if (st->complexity!=0)
- filter_mem16(sw, bw_lpc1, bw_lpc2, sw, st->subframeSize, st->lpcSize, st->mem_sw, stack);
-
- }
-
- /* Store the LSPs for interpolation in the next frame */
- if (st->submodeID>=1)
- {
- for (i=0;i<st->lpcSize;i++)
- st->old_lsp[i] = lsp[i];
- for (i=0;i<st->lpcSize;i++)
- st->old_qlsp[i] = qlsp[i];
- }
-
-#ifdef VORBIS_PSYCHO
- if (st->submodeID>=1)
- SPEEX_COPY(st->old_curve, st->curve, 128);
-#endif
-
- if (st->submodeID==1)
- {
-#ifndef DISABLE_VBR
- if (st->dtx_count)
- speex_bits_pack(bits, 15, 4);
- else
-#endif
- speex_bits_pack(bits, 0, 4);
- }
-
- /* The next frame will not be the first (Duh!) */
- st->first = 0;
- SPEEX_COPY(st->winBuf, in+2*st->frameSize-st->windowSize, st->windowSize-st->frameSize);
-
- if (SUBMODE(innovation_quant) == noise_codebook_quant || st->submodeID==0)
- st->bounded_pitch = 1;
- else
- st->bounded_pitch = 0;
-
- return 1;
-}
-#endif /* SPEEX_DISABLE_ENCODER */
-
-static DecState global_decstate IBSS_ATTR;
-
-void *nb_decoder_init(const SpeexMode *m)
-{
- DecState *st = &global_decstate;
- const SpeexNBMode *mode;
- int i;
-
- mode=(const SpeexNBMode*)m->mode;
-/*
- st = (DecState *)speex_alloc(sizeof(DecState));
- if (!st)
- return NULL;
-*/
- memset(st, 0, sizeof(*st));
-#if defined(VAR_ARRAYS) || defined (USE_ALLOCA)
- st->stack = NULL;
-#else
- st->stack = (char*)speex_alloc_scratch(NB_DEC_STACK);
-#endif
-
- st->mode=m;
-
-
- st->encode_submode = 1;
-
- st->first=1;
- /* Codec parameters, should eventually have several "modes"*/
- st->frameSize = mode->frameSize;
- st->nbSubframes=mode->frameSize/mode->subframeSize;
- st->subframeSize=mode->subframeSize;
- st->lpcSize = mode->lpcSize;
- st->min_pitch=mode->pitchStart;
- st->max_pitch=mode->pitchEnd;
-
- st->submodes=mode->submodes;
- st->submodeID=mode->defaultSubmode;
-
- st->lpc_enh_enabled=1;
-
- /* st->excBuf = (spx_word16_t*)speex_alloc((st->frameSize + 2*st->max_pitch + st->subframeSize + 12)*sizeof(spx_word16_t)); */
- st->exc = st->excBuf + 2*st->max_pitch + st->subframeSize + 6;
- SPEEX_MEMSET(st->excBuf, 0, st->frameSize + st->max_pitch);
-
- /* st->interp_qlpc = (spx_coef_t*)speex_alloc(st->lpcSize*sizeof(spx_coef_t)); */
- /* st->old_qlsp = (spx_lsp_t*)speex_alloc(st->lpcSize*sizeof(spx_lsp_t)); */
- /* st->mem_sp = (spx_mem_t*)speex_alloc(st->lpcSize*sizeof(spx_mem_t)); */
- /* st->pi_gain = (spx_word32_t*)speex_alloc((st->nbSubframes)*sizeof(spx_word32_t)); */
- st->last_pitch = 40;
- st->count_lost=0;
- st->pitch_gain_buf[0] = st->pitch_gain_buf[1] = st->pitch_gain_buf[2] = 0;
- st->pitch_gain_buf_idx = 0;
- st->seed = 1000;
-
- st->sampling_rate=8000;
- st->last_ol_gain = 0;
-
- st->user_callback.func = &speex_default_user_handler;
- st->user_callback.data = NULL;
- for (i=0;i<16;i++)
- st->speex_callbacks[i].func = NULL;
-
- st->voc_m1=st->voc_m2=st->voc_mean=0;
- st->voc_offset=0;
- st->dtx_enabled=0;
- st->isWideband = 0;
- st->highpass_enabled = 1;
-
-#ifdef CPU_COLDFIRE
- coldfire_set_macsr(0); // Integer mode
-#endif
-#ifdef ENABLE_VALGRIND
- VALGRIND_MAKE_READABLE(st, NB_DEC_STACK);
-#endif
- return st;
-}
-
-void nb_decoder_destroy(void *state)
-{
-#if !(defined(VAR_ARRAYS) || defined (USE_ALLOCA))
- DecState *st;
- st=(DecState*)state;
- speex_free_scratch(st->stack);
-#else
- (void)state;
-#endif
-/*
- speex_free (st->excBuf);
- speex_free (st->interp_qlpc);
- speex_free (st->old_qlsp);
- speex_free (st->mem_sp);
- speex_free (st->pi_gain);
-
- speex_free(state);
-*/
-}
-
-#define median3(a, b, c) ((a) < (b) ? ((b) < (c) ? (b) : ((a) < (c) ? (c) : (a))) : ((c) < (b) ? (b) : ((c) < (a) ? (c) : (a))))
-
-#ifdef FIXED_POINT
-const spx_word16_t attenuation[10] = {32767, 31483, 27923, 22861, 17278, 12055, 7764, 4616, 2533, 1283};
-#else
-const spx_word16_t attenuation[10] = {1., 0.961, 0.852, 0.698, 0.527, 0.368, 0.237, 0.141, 0.077, 0.039};
-
-#endif
-
-#ifndef ROCKBOX_VOICE_CODEC
-static void nb_decode_lost(DecState *st, spx_word16_t *out, char *stack)
-{
- int i;
- int pitch_val;
- spx_word16_t pitch_gain;
- spx_word16_t fact;
- spx_word16_t gain_med;
- spx_word16_t innov_gain;
- spx_word16_t noise_gain;
-
- if (st->count_lost<10)
- fact = attenuation[st->count_lost];
- else
- fact = 0;
-
- gain_med = median3(st->pitch_gain_buf[0], st->pitch_gain_buf[1], st->pitch_gain_buf[2]);
- if (gain_med < st->last_pitch_gain)
- st->last_pitch_gain = gain_med;
-
-#ifdef FIXED_POINT
- pitch_gain = st->last_pitch_gain;
- if (pitch_gain>54)
- pitch_gain = 54;
- pitch_gain = SHL16(pitch_gain, 9);
-#else
- pitch_gain = GAIN_SCALING_1*st->last_pitch_gain;
- if (pitch_gain>.85)
- pitch_gain=.85;
-#endif
- pitch_gain = MULT16_16_Q15(fact,pitch_gain) + VERY_SMALL;
- /* FIXME: This was rms of innovation (not exc) */
- innov_gain = compute_rms16(st->exc, st->frameSize);
- noise_gain = MULT16_16_Q15(innov_gain, MULT16_16_Q15(fact, SUB16(Q15ONE,MULT16_16_Q15(pitch_gain,pitch_gain))));
- /* Shift all buffers by one frame */
- SPEEX_MOVE(st->excBuf, st->excBuf+st->frameSize, 2*st->max_pitch + st->subframeSize + 12);
-
-
- pitch_val = st->last_pitch + SHR32((spx_int32_t)speex_rand(1+st->count_lost, &st->seed),SIG_SHIFT);
- if (pitch_val > st->max_pitch)
- pitch_val = st->max_pitch;
- if (pitch_val < st->min_pitch)
- pitch_val = st->min_pitch;
- for (i=0;i<st->frameSize;i++)
- {
- st->exc[i]= MULT16_16_Q15(pitch_gain, (st->exc[i-pitch_val]+VERY_SMALL)) +
- speex_rand(noise_gain, &st->seed);
- }
-
- bw_lpc(QCONST16(.98,15), st->interp_qlpc, st->interp_qlpc, st->lpcSize);
- iir_mem16(&st->exc[-st->subframeSize], st->interp_qlpc, out, st->frameSize,
- st->lpcSize, st->mem_sp, stack);
- highpass(out, out, st->frameSize, HIGHPASS_NARROWBAND|HIGHPASS_OUTPUT, st->mem_hp);
-
- st->first = 0;
- st->count_lost++;
- st->pitch_gain_buf[st->pitch_gain_buf_idx++] = PSHR16(pitch_gain,9);
- if (st->pitch_gain_buf_idx > 2) /* rollover */
- st->pitch_gain_buf_idx = 0;
-}
-#endif
-
-/* Just so we don't need to carry the complete wideband mode information */
-static const unsigned short wb_skip_table[8] = {0, 36, 112, 192, 352, 0, 0, 0};
-
-int nb_decode(void *state, SpeexBits *bits, void *vout)
-{
- DecState *st;
- int i, sub;
- int pitch;
- spx_word16_t pitch_gain[3];
- spx_word32_t ol_gain=0;
- int ol_pitch=0;
- spx_word16_t ol_pitch_coef=0;
- int best_pitch=40;
- spx_word16_t best_pitch_gain=0;
- int wideband;
- int m;
- char *stack;
- VARDECL(spx_sig_t *innov);
- VARDECL(spx_word32_t *exc32);
- VARDECL(spx_coef_t *ak);
- VARDECL(spx_lsp_t *qlsp);
- spx_word16_t pitch_average=0;
-
- spx_word16_t *out = (spx_word16_t*)vout;
- VARDECL(spx_lsp_t *interp_qlsp);
-
- st=(DecState*)state;
- stack=st->stack;
-
- /* Check if we're in DTX mode*/
- if (!bits && st->dtx_enabled)
- {
- st->submodeID=0;
- } else
- {
- /* If bits is NULL, consider the packet to be lost (what could we do anyway) */
-#ifndef ROCKBOX_VOICE_CODEC
- if (!bits)
- {
- nb_decode_lost(st, out, stack);
- return 0;
- }
-#endif
-
- if (st->encode_submode)
- {
-
- /* Search for next narrowband block (handle requests, skip wideband blocks) */
- do {
- if (speex_bits_remaining(bits)<5)
- return -1;
- wideband = speex_bits_unpack_unsigned(bits, 1);
- if (wideband) /* Skip wideband block (for compatibility) */
- {
- int submode;
- int advance;
- advance = submode = speex_bits_unpack_unsigned(bits, SB_SUBMODE_BITS);
- /*speex_mode_query(&speex_wb_mode, SPEEX_SUBMODE_BITS_PER_FRAME, &advance);*/
- advance = wb_skip_table[submode];
- if (advance < 0)
- {
- speex_notify("Invalid mode encountered. The stream is corrupted.");
- return -2;
- }
- advance -= (SB_SUBMODE_BITS+1);
- speex_bits_advance(bits, advance);
-
- if (speex_bits_remaining(bits)<5)
- return -1;
- wideband = speex_bits_unpack_unsigned(bits, 1);
- if (wideband)
- {
- advance = submode = speex_bits_unpack_unsigned(bits, SB_SUBMODE_BITS);
- /*speex_mode_query(&speex_wb_mode, SPEEX_SUBMODE_BITS_PER_FRAME, &advance);*/
- advance = wb_skip_table[submode];
- if (advance < 0)
- {
- speex_notify("Invalid mode encountered. The stream is corrupted.");
- return -2;
- }
- advance -= (SB_SUBMODE_BITS+1);
- speex_bits_advance(bits, advance);
- wideband = speex_bits_unpack_unsigned(bits, 1);
- if (wideband)
- {
- speex_notify("More than two wideband layers found. The stream is corrupted.");
- return -2;
- }
-
- }
- }
- if (speex_bits_remaining(bits)<4)
- return -1;
- /* FIXME: Check for overflow */
- m = speex_bits_unpack_unsigned(bits, 4);
- if (m==15) /* We found a terminator */
- {
- return -1;
- } else if (m==14) /* Speex in-band request */
- {
- int ret = speex_inband_handler(bits, st->speex_callbacks, state);
- if (ret)
- return ret;
- } else if (m==13) /* User in-band request */
- {
- int ret = st->user_callback.func(bits, state, st->user_callback.data);
- if (ret)
- return ret;
- } else if (m>8) /* Invalid mode */
- {
- speex_notify("Invalid mode encountered. The stream is corrupted.");
- return -2;
- }
-
- } while (m>8);
-
- /* Get the sub-mode that was used */
- st->submodeID = m;
- }
-
- }
-
- /* Shift all buffers by one frame */
- SPEEX_MOVE(st->excBuf, st->excBuf+st->frameSize, 2*st->max_pitch + st->subframeSize + 12);
-
- /* If null mode (no transmission), just set a couple things to zero*/
- if (st->submodes[st->submodeID] == NULL)
- {
- VARDECL(spx_coef_t *lpc);
- ALLOC(lpc, st->lpcSize, spx_coef_t);
- bw_lpc(QCONST16(0.93f,15), st->interp_qlpc, lpc, st->lpcSize);
- {
- spx_word16_t innov_gain=0;
- /* FIXME: This was innov, not exc */
- innov_gain = compute_rms16(st->exc, st->frameSize);
- for (i=0;i<st->frameSize;i++)
- st->exc[i]=speex_rand(innov_gain, &st->seed);
- }
-
-
- st->first=1;
-
- /* Final signal synthesis from excitation */
- iir_mem16(st->exc, lpc, out, st->frameSize, st->lpcSize, st->mem_sp, stack);
-
- st->count_lost=0;
- return 0;
- }
-
- ALLOC(qlsp, st->lpcSize, spx_lsp_t);
-
- /* Unquantize LSPs */
- SUBMODE(lsp_unquant)(qlsp, st->lpcSize, bits);
-
- /*Damp memory if a frame was lost and the LSP changed too much*/
- if (st->count_lost)
- {
- spx_word16_t fact;
- spx_word32_t lsp_dist=0;
- for (i=0;i<st->lpcSize;i++)
- lsp_dist = ADD32(lsp_dist, EXTEND32(ABS(st->old_qlsp[i] - qlsp[i])));
-#ifdef FIXED_POINT
- fact = SHR16(19661,SHR32(lsp_dist,LSP_SHIFT+2));
-#else
- fact = .6*exp(-.2*lsp_dist);
-#endif
- for (i=0;i<st->lpcSize;i++)
- st->mem_sp[i] = MULT16_32_Q15(fact,st->mem_sp[i]);
- }
-
-
- /* Handle first frame and lost-packet case */
- if (st->first || st->count_lost)
- {
- for (i=0;i<st->lpcSize;i++)
- st->old_qlsp[i] = qlsp[i];
- }
-
- /* Get open-loop pitch estimation for low bit-rate pitch coding */
- if (SUBMODE(lbr_pitch)!=-1)
- {
- ol_pitch = st->min_pitch+speex_bits_unpack_unsigned(bits, 7);
- }
-
- if (SUBMODE(forced_pitch_gain))
- {
- int quant;
- quant = speex_bits_unpack_unsigned(bits, 4);
- ol_pitch_coef=MULT16_16_P15(QCONST16(0.066667,15),SHL16(quant,GAIN_SHIFT));
- }
-
- /* Get global excitation gain */
- {
- int qe;
- qe = speex_bits_unpack_unsigned(bits, 5);
-#ifdef FIXED_POINT
- /* FIXME: Perhaps we could slightly lower the gain here when the output is going to saturate? */
- ol_gain = MULT16_32_Q15(28406,ol_gain_table[qe]);
-#else
- ol_gain = SIG_SCALING*exp(qe/3.5);
-#endif
- }
-
- ALLOC(ak, st->lpcSize, spx_coef_t);
- ALLOC(innov, st->subframeSize, spx_sig_t);
- ALLOC(exc32, st->subframeSize, spx_word32_t);
-
- if (st->submodeID==1)
- {
- int extra;
- extra = speex_bits_unpack_unsigned(bits, 4);
-
- if (extra==15)
- st->dtx_enabled=1;
- else
- st->dtx_enabled=0;
- }
- if (st->submodeID>1)
- st->dtx_enabled=0;
-
- /*Loop on subframes */
- for (sub=0;sub<st->nbSubframes;sub++)
- {
- int offset;
- spx_word16_t *exc;
- spx_word16_t *innov_save = NULL;
- spx_word16_t tmp;
-
- /* Offset relative to start of frame */
- offset = st->subframeSize*sub;
- /* Excitation */
- exc=st->exc+offset;
-
- if (st->innov_save)
- innov_save = st->innov_save+offset;
-
-
- /* Reset excitation */
- SPEEX_MEMSET(exc, 0, st->subframeSize);
-
- /*Adaptive codebook contribution*/
- speex_assert (SUBMODE(ltp_unquant));
- {
- int pit_min, pit_max;
- /* Handle pitch constraints if any */
- if (SUBMODE(lbr_pitch) != -1)
- {
- int margin;
- margin = SUBMODE(lbr_pitch);
- if (margin)
- {
-/* GT - need optimization?
- if (ol_pitch < st->min_pitch+margin-1)
- ol_pitch=st->min_pitch+margin-1;
- if (ol_pitch > st->max_pitch-margin)
- ol_pitch=st->max_pitch-margin;
- pit_min = ol_pitch-margin+1;
- pit_max = ol_pitch+margin;
-*/
- pit_min = ol_pitch-margin+1;
- if (pit_min < st->min_pitch)
- pit_min = st->min_pitch;
- pit_max = ol_pitch+margin;
- if (pit_max > st->max_pitch)
- pit_max = st->max_pitch;
- } else {
- pit_min = pit_max = ol_pitch;
- }
- } else {
- pit_min = st->min_pitch;
- pit_max = st->max_pitch;
- }
-
-
-
- SUBMODE(ltp_unquant)(exc, exc32, pit_min, pit_max, ol_pitch_coef, SUBMODE(ltp_params),
- st->subframeSize, &pitch, &pitch_gain[0], bits, stack,
- st->count_lost, offset, st->last_pitch_gain, 0);
-
- /* Ensuring that things aren't blowing up as would happen if e.g. an encoder is
- crafting packets to make us produce NaNs and slow down the decoder (vague DoS threat).
- We can probably be even more aggressive and limit to 15000 or so. */
- sanitize_values32(exc32, NEG32(QCONST32(32000,SIG_SHIFT-1)), QCONST32(32000,SIG_SHIFT-1), st->subframeSize);
-
- tmp = gain_3tap_to_1tap(pitch_gain);
-
- pitch_average += tmp;
- if ((tmp>best_pitch_gain&&ABS(2*best_pitch-pitch)>=3&&ABS(3*best_pitch-pitch)>=4&&ABS(4*best_pitch-pitch)>=5)
- || (tmp>MULT16_16_Q15(QCONST16(.6,15),best_pitch_gain)&&(ABS(best_pitch-2*pitch)<3||ABS(best_pitch-3*pitch)<4||ABS(best_pitch-4*pitch)<5))
- || (MULT16_16_Q15(QCONST16(.67,15),tmp)>best_pitch_gain&&(ABS(2*best_pitch-pitch)<3||ABS(3*best_pitch-pitch)<4||ABS(4*best_pitch-pitch)<5)) )
- {
- best_pitch = pitch;
- if (tmp > best_pitch_gain)
- best_pitch_gain = tmp;
- }
- }
-
- /* Unquantize the innovation */
- {
- int q_energy;
- spx_word32_t ener;
-
- SPEEX_MEMSET(innov, 0, st->subframeSize);
-
- /* Decode sub-frame gain correction */
- if (SUBMODE(have_subframe_gain)==3)
- {
- q_energy = speex_bits_unpack_unsigned(bits, 3);
- ener = MULT16_32_Q14(exc_gain_quant_scal3[q_energy],ol_gain);
- } else if (SUBMODE(have_subframe_gain)==1)
- {
- q_energy = speex_bits_unpack_unsigned(bits, 1);
- ener = MULT16_32_Q14(exc_gain_quant_scal1[q_energy],ol_gain);
- } else {
- ener = ol_gain;
- }
-
- speex_assert (SUBMODE(innovation_unquant));
- {
- /*Fixed codebook contribution*/
- SUBMODE(innovation_unquant)(innov, SUBMODE(innovation_params), st->subframeSize, bits, stack, &st->seed);
- /* De-normalize innovation and update excitation */
-
- signal_mul(innov, innov, ener, st->subframeSize);
-
- /* Decode second codebook (only for some modes) */
- if (SUBMODE(double_codebook))
- {
- char *tmp_stack=stack;
- VARDECL(spx_sig_t *innov2);
- ALLOC(innov2, st->subframeSize, spx_sig_t);
- SPEEX_MEMSET(innov2, 0, st->subframeSize);
- SUBMODE(innovation_unquant)(innov2, SUBMODE(innovation_params), st->subframeSize, bits, stack, &st->seed);
- signal_mul(innov2, innov2, MULT16_32_Q15(QCONST16(0.454545f,15),ener), st->subframeSize);
- for (i=0;i<st->subframeSize;i++)
- innov[i] = ADD32(innov[i], innov2[i]);
- stack = tmp_stack;
- }
- for (i=0;i<st->subframeSize;i++)
- exc[i]=EXTRACT16(SATURATE32(PSHR32(ADD32(SHL32(exc32[i],1),innov[i]),SIG_SHIFT),32767));
- /*print_vec(exc, 40, "innov");*/
- if (innov_save)
- {
- for (i=0;i<st->subframeSize;i++)
- innov_save[i] = EXTRACT16(PSHR32(innov[i], SIG_SHIFT));
- }
- }
-
- /*Vocoder mode*/
- if (st->submodeID==1)
- {
- spx_word16_t g=ol_pitch_coef;
- g=MULT16_16_P14(QCONST16(1.5f,14),(g-QCONST16(.2f,6)));
- if (g<0)
- g=0;
- if (g>GAIN_SCALING)
- g=GAIN_SCALING;
-
- SPEEX_MEMSET(exc, 0, st->subframeSize);
- while (st->voc_offset<st->subframeSize)
- {
- /* exc[st->voc_offset]= g*sqrt(2*ol_pitch)*ol_gain;
- Not quite sure why we need the factor of two in the sqrt */
- if (st->voc_offset>=0)
- exc[st->voc_offset]=MULT16_16(spx_sqrt(MULT16_16_16(2,ol_pitch)),EXTRACT16(PSHR32(MULT16_16(g,PSHR32(ol_gain,SIG_SHIFT)),6)));
- st->voc_offset+=ol_pitch;
- }
- st->voc_offset -= st->subframeSize;
-
- for (i=0;i<st->subframeSize;i++)
- {
- spx_word16_t exci=exc[i];
- exc[i]= ADD16(ADD16(MULT16_16_Q15(QCONST16(.7f,15),exc[i]) , MULT16_16_Q15(QCONST16(.3f,15),st->voc_m1)),
- SUB16(MULT16_16_Q15(Q15_ONE-MULT16_16_16(QCONST16(.85f,9),g),EXTRACT16(PSHR32(innov[i],SIG_SHIFT))),
- MULT16_16_Q15(MULT16_16_16(QCONST16(.15f,9),g),EXTRACT16(PSHR32(st->voc_m2,SIG_SHIFT)))
- ));
- st->voc_m1 = exci;
- st->voc_m2=innov[i];
- st->voc_mean = EXTRACT16(PSHR32(ADD32(MULT16_16(QCONST16(.8f,15),st->voc_mean), MULT16_16(QCONST16(.2f,15),exc[i])), 15));
- exc[i]-=st->voc_mean;
- }
- }
-
- }
- }
-
- ALLOC(interp_qlsp, st->lpcSize, spx_lsp_t);
-
- if (st->lpc_enh_enabled && SUBMODE(comb_gain)>0 && !st->count_lost)
- {
- multicomb(st->exc-st->subframeSize, out, st->interp_qlpc, st->lpcSize, 2*st->subframeSize, best_pitch, 40, SUBMODE(comb_gain), stack);
- multicomb(st->exc+st->subframeSize, out+2*st->subframeSize, st->interp_qlpc, st->lpcSize, 2*st->subframeSize, best_pitch, 40, SUBMODE(comb_gain), stack);
- } else {
- SPEEX_COPY(out, &st->exc[-st->subframeSize], st->frameSize);
- }
-
- /* If the last packet was lost, re-scale the excitation to obtain the same energy as encoded in ol_gain */
- if (st->count_lost)
- {
- spx_word16_t exc_ener;
- spx_word32_t gain32;
- spx_word16_t gain;
- exc_ener = compute_rms16 (st->exc, st->frameSize);
- gain32 = PDIV32(ol_gain, ADD16(exc_ener,1));
-#ifdef FIXED_POINT
- if (gain32 > 32767)
- gain32 = 32767;
- gain = EXTRACT16(gain32);
-#else
- if (gain32 > 2)
- gain32=2;
- gain = gain32;
-#endif
- for (i=0;i<st->frameSize;i++)
- {
- st->exc[i] = MULT16_16_Q14(gain, st->exc[i]);
- out[i]=st->exc[i-st->subframeSize];
- }
- }
-
- /*Loop on subframes */
- for (sub=0;sub<st->nbSubframes;sub++)
- {
- int offset;
- spx_word16_t *sp;
-
- /* Offset relative to start of frame */
- offset = st->subframeSize*sub;
- /* Original signal */
- sp=out+offset;
-
- /* LSP interpolation (quantized and unquantized) */
- lsp_interpolate(st->old_qlsp, qlsp, interp_qlsp, st->lpcSize, sub, st->nbSubframes);
-
- /* Make sure the LSP's are stable */
- lsp_enforce_margin(interp_qlsp, st->lpcSize, LSP_MARGIN);
-
- /* Compute interpolated LPCs (unquantized) */
- lsp_to_lpc(interp_qlsp, ak, st->lpcSize, stack);
-
- /* Compute analysis filter at w=pi */
- {
- spx_word32_t pi_g=LPC_SCALING;
- for (i=0;i<st->lpcSize;i+=2)
- {
- /*pi_g += -st->interp_qlpc[i] + st->interp_qlpc[i+1];*/
- pi_g = ADD32(pi_g, SUB32(EXTEND32(ak[i+1]),EXTEND32(ak[i])));
- }
- st->pi_gain[sub] = pi_g;
- }
-
- iir_mem16(sp, st->interp_qlpc, sp, st->subframeSize, st->lpcSize,
- st->mem_sp, stack);
-
- for (i=0;i<st->lpcSize;i++)
- st->interp_qlpc[i] = ak[i];
-
- }
-
- if (st->highpass_enabled)
- highpass(out, out, st->frameSize, (st->isWideband?HIGHPASS_WIDEBAND:HIGHPASS_NARROWBAND)|HIGHPASS_OUTPUT, st->mem_hp);
- /*for (i=0;i<st->frameSize;i++)
- printf ("%d\n", (int)st->frame[i]);*/
-
- /* Tracking output level */
- st->level = 1+PSHR32(ol_gain,SIG_SHIFT);
- st->max_level = MAX16(MULT16_16_Q15(QCONST16(.99f,15), st->max_level), st->level);
- st->min_level = MIN16(ADD16(1,MULT16_16_Q14(QCONST16(1.01f,14), st->min_level)), st->level);
- if (st->max_level < st->min_level+1)
- st->max_level = st->min_level+1;
- /*printf ("%f %f %f %d\n", og, st->min_level, st->max_level, update);*/
-
- /* Store the LSPs for interpolation in the next frame */
- for (i=0;i<st->lpcSize;i++)
- st->old_qlsp[i] = qlsp[i];
-
- /* The next frame will not be the first (Duh!) */
- st->first = 0;
- st->count_lost=0;
- st->last_pitch = best_pitch;
-#ifdef FIXED_POINT
- st->last_pitch_gain = PSHR16(pitch_average,2);
-#else
- st->last_pitch_gain = .25*pitch_average;
-#endif
- st->pitch_gain_buf[st->pitch_gain_buf_idx++] = st->last_pitch_gain;
- if (st->pitch_gain_buf_idx > 2) /* rollover */
- st->pitch_gain_buf_idx = 0;
-
- st->last_ol_gain = ol_gain;
-
- return 0;
-}
-
-#ifndef SPEEX_DISABLE_ENCODER
-int nb_encoder_ctl(void *state, int request, void *ptr)
-{
- EncState *st;
- st=(EncState*)state;
- switch(request)
- {
- case SPEEX_GET_FRAME_SIZE:
- (*(spx_int32_t*)ptr) = st->frameSize;
- break;
- case SPEEX_SET_LOW_MODE:
- case SPEEX_SET_MODE:
- st->submodeSelect = st->submodeID = (*(spx_int32_t*)ptr);
- break;
- case SPEEX_GET_LOW_MODE:
- case SPEEX_GET_MODE:
- (*(spx_int32_t*)ptr) = st->submodeID;
- break;
-#ifndef DISABLE_VBR
- case SPEEX_SET_VBR:
- st->vbr_enabled = (*(spx_int32_t*)ptr);
- break;
- case SPEEX_GET_VBR:
- (*(spx_int32_t*)ptr) = st->vbr_enabled;
- break;
- case SPEEX_SET_VAD:
- st->vad_enabled = (*(spx_int32_t*)ptr);
- break;
- case SPEEX_GET_VAD:
- (*(spx_int32_t*)ptr) = st->vad_enabled;
- break;
- case SPEEX_SET_DTX:
- st->dtx_enabled = (*(spx_int32_t*)ptr);
- break;
- case SPEEX_GET_DTX:
- (*(spx_int32_t*)ptr) = st->dtx_enabled;
- break;
- case SPEEX_SET_ABR:
- st->abr_enabled = (*(spx_int32_t*)ptr);
- st->vbr_enabled = st->abr_enabled!=0;
- if (st->vbr_enabled)
- {
- spx_int32_t i=10;
- spx_int32_t rate, target;
- float vbr_qual;
- target = (*(spx_int32_t*)ptr);
- while (i>=0)
- {
- speex_encoder_ctl(st, SPEEX_SET_QUALITY, &i);
- speex_encoder_ctl(st, SPEEX_GET_BITRATE, &rate);
- if (rate <= target)
- break;
- i--;
- }
- vbr_qual=i;
- if (vbr_qual<0)
- vbr_qual=0;
- speex_encoder_ctl(st, SPEEX_SET_VBR_QUALITY, &vbr_qual);
- st->abr_count=0;
- st->abr_drift=0;
- st->abr_drift2=0;
- }
-
- break;
- case SPEEX_GET_ABR:
- (*(spx_int32_t*)ptr) = st->abr_enabled;
- break;
-#endif /* #ifndef DISABLE_VBR */
-#if !defined(DISABLE_VBR) && !defined(DISABLE_FLOAT_API)
- case SPEEX_SET_VBR_QUALITY:
- st->vbr_quality = (*(float*)ptr);
- break;
- case SPEEX_GET_VBR_QUALITY:
- (*(float*)ptr) = st->vbr_quality;
- break;
-#endif /* !defined(DISABLE_VBR) && !defined(DISABLE_FLOAT_API) */
- case SPEEX_SET_QUALITY:
- {
- int quality = (*(spx_int32_t*)ptr);
- if (quality < 0)
- quality = 0;
- if (quality > 10)
- quality = 10;
- st->submodeSelect = st->submodeID = ((const SpeexNBMode*)(st->mode->mode))->quality_map[quality];
- }
- break;
- case SPEEX_SET_COMPLEXITY:
- st->complexity = (*(spx_int32_t*)ptr);
- if (st->complexity<0)
- st->complexity=0;
- break;
- case SPEEX_GET_COMPLEXITY:
- (*(spx_int32_t*)ptr) = st->complexity;
- break;
- case SPEEX_SET_BITRATE:
- {
- spx_int32_t i=10;
- spx_int32_t rate, target;
- target = (*(spx_int32_t*)ptr);
- while (i>=0)
- {
- speex_encoder_ctl(st, SPEEX_SET_QUALITY, &i);
- speex_encoder_ctl(st, SPEEX_GET_BITRATE, &rate);
- if (rate <= target)
- break;
- i--;
- }
- }
- break;
- case SPEEX_GET_BITRATE:
- if (st->submodes[st->submodeID])
- (*(spx_int32_t*)ptr) = st->sampling_rate*SUBMODE(bits_per_frame)/st->frameSize;
- else
- (*(spx_int32_t*)ptr) = st->sampling_rate*(NB_SUBMODE_BITS+1)/st->frameSize;
- break;
- case SPEEX_SET_SAMPLING_RATE:
- st->sampling_rate = (*(spx_int32_t*)ptr);
- break;
- case SPEEX_GET_SAMPLING_RATE:
- (*(spx_int32_t*)ptr)=st->sampling_rate;
- break;
- case SPEEX_RESET_STATE:
- {
- int i;
- st->bounded_pitch = 1;
- st->first = 1;
- for (i=0;i<st->lpcSize;i++)
- st->old_lsp[i]= DIV32(MULT16_16(QCONST16(3.1415927f, LSP_SHIFT), i+1), st->lpcSize+1);
- for (i=0;i<st->lpcSize;i++)
- st->mem_sw[i]=st->mem_sw_whole[i]=st->mem_sp[i]=st->mem_exc[i]=0;
- for (i=0;i<st->frameSize+st->max_pitch+1;i++)
- st->excBuf[i]=st->swBuf[i]=0;
- for (i=0;i<st->windowSize-st->frameSize;i++)
- st->winBuf[i]=0;
- }
- break;
- case SPEEX_SET_SUBMODE_ENCODING:
- st->encode_submode = (*(spx_int32_t*)ptr);
- break;
- case SPEEX_GET_SUBMODE_ENCODING:
- (*(spx_int32_t*)ptr) = st->encode_submode;
- break;
- case SPEEX_GET_LOOKAHEAD:
- (*(spx_int32_t*)ptr)=(st->windowSize-st->frameSize);
- break;
- case SPEEX_SET_PLC_TUNING:
- st->plc_tuning = (*(spx_int32_t*)ptr);
- if (st->plc_tuning>100)
- st->plc_tuning=100;
- break;
- case SPEEX_GET_PLC_TUNING:
- (*(spx_int32_t*)ptr)=(st->plc_tuning);
- break;
-#ifndef DISABLE_VBR
- case SPEEX_SET_VBR_MAX_BITRATE:
- st->vbr_max = (*(spx_int32_t*)ptr);
- break;
- case SPEEX_GET_VBR_MAX_BITRATE:
- (*(spx_int32_t*)ptr) = st->vbr_max;
- break;
-#endif /* #ifndef DISABLE_VBR */
- case SPEEX_SET_HIGHPASS:
- st->highpass_enabled = (*(spx_int32_t*)ptr);
- break;
- case SPEEX_GET_HIGHPASS:
- (*(spx_int32_t*)ptr) = st->highpass_enabled;
- break;
-
- /* This is all internal stuff past this point */
- case SPEEX_GET_PI_GAIN:
- {
- int i;
- spx_word32_t *g = (spx_word32_t*)ptr;
- for (i=0;i<st->nbSubframes;i++)
- g[i]=st->pi_gain[i];
- }
- break;
- case SPEEX_GET_EXC:
- {
- int i;
- for (i=0;i<st->nbSubframes;i++)
- ((spx_word16_t*)ptr)[i] = compute_rms16(st->exc+i*st->subframeSize, st->subframeSize);
- }
- break;
-#ifndef DISABLE_VBR
- case SPEEX_GET_RELATIVE_QUALITY:
- (*(float*)ptr)=st->relative_quality;
- break;
-#endif /* #ifndef DISABLE_VBR */
- case SPEEX_SET_INNOVATION_SAVE:
- st->innov_rms_save = (spx_word16_t*)ptr;
- break;
- case SPEEX_SET_WIDEBAND:
- st->isWideband = *((spx_int32_t*)ptr);
- break;
- case SPEEX_GET_STACK:
- *((char**)ptr) = st->stack;
- break;
- default:
- speex_warning_int("Unknown nb_ctl request: ", request);
- return -1;
- }
- return 0;
-}
-#endif /* SPEEX_DISABLE_ENCODER */
-
-int nb_decoder_ctl(void *state, int request, void *ptr)
-{
- DecState *st;
- st=(DecState*)state;
- switch(request)
- {
- case SPEEX_SET_LOW_MODE:
- case SPEEX_SET_MODE:
- st->submodeID = (*(spx_int32_t*)ptr);
- break;
- case SPEEX_GET_LOW_MODE:
- case SPEEX_GET_MODE:
- (*(spx_int32_t*)ptr) = st->submodeID;
- break;
- case SPEEX_SET_ENH:
- st->lpc_enh_enabled = *((spx_int32_t*)ptr);
- break;
- case SPEEX_GET_ENH:
- *((spx_int32_t*)ptr) = st->lpc_enh_enabled;
- break;
- case SPEEX_GET_FRAME_SIZE:
- (*(spx_int32_t*)ptr) = st->frameSize;
- break;
- case SPEEX_GET_BITRATE:
- if (st->submodes[st->submodeID])
- (*(spx_int32_t*)ptr) = st->sampling_rate*SUBMODE(bits_per_frame)/st->frameSize;
- else
- (*(spx_int32_t*)ptr) = st->sampling_rate*(NB_SUBMODE_BITS+1)/st->frameSize;
- break;
- case SPEEX_SET_SAMPLING_RATE:
- st->sampling_rate = (*(spx_int32_t*)ptr);
- break;
- case SPEEX_GET_SAMPLING_RATE:
- (*(spx_int32_t*)ptr)=st->sampling_rate;
- break;
- case SPEEX_SET_HANDLER:
- {
- SpeexCallback *c = (SpeexCallback*)ptr;
- st->speex_callbacks[c->callback_id].func=c->func;
- st->speex_callbacks[c->callback_id].data=c->data;
- st->speex_callbacks[c->callback_id].callback_id=c->callback_id;
- }
- break;
- case SPEEX_SET_USER_HANDLER:
- {
- SpeexCallback *c = (SpeexCallback*)ptr;
- st->user_callback.func=c->func;
- st->user_callback.data=c->data;
- st->user_callback.callback_id=c->callback_id;
- }
- break;
- case SPEEX_RESET_STATE:
- {
- int i;
- for (i=0;i<st->lpcSize;i++)
- st->mem_sp[i]=0;
- for (i=0;i<st->frameSize + st->max_pitch + 1;i++)
- st->excBuf[i]=0;
- }
- break;
- case SPEEX_SET_SUBMODE_ENCODING:
- st->encode_submode = (*(spx_int32_t*)ptr);
- break;
- case SPEEX_GET_SUBMODE_ENCODING:
- (*(spx_int32_t*)ptr) = st->encode_submode;
- break;
- case SPEEX_GET_LOOKAHEAD:
- (*(spx_int32_t*)ptr)=st->subframeSize;
- break;
- case SPEEX_SET_HIGHPASS:
- st->highpass_enabled = (*(spx_int32_t*)ptr);
- break;
- case SPEEX_GET_HIGHPASS:
- (*(spx_int32_t*)ptr) = st->highpass_enabled;
- break;
- /* FIXME: Convert to fixed-point and re-enable even when float API is disabled */
-#ifndef DISABLE_FLOAT_API
- case SPEEX_GET_ACTIVITY:
- {
- float ret;
- ret = log(st->level/st->min_level)/log(st->max_level/st->min_level);
- if (ret>1)
- ret = 1;
- /* Done in a strange way to catch NaNs as well */
- if (!(ret > 0))
- ret = 0;
- /*printf ("%f %f %f %f\n", st->level, st->min_level, st->max_level, ret);*/
- (*(spx_int32_t*)ptr) = (int)(100*ret);
- }
- break;
-#endif
- case SPEEX_GET_PI_GAIN:
- {
- int i;
- spx_word32_t *g = (spx_word32_t*)ptr;
- for (i=0;i<st->nbSubframes;i++)
- g[i]=st->pi_gain[i];
- }
- break;
- case SPEEX_GET_EXC:
- {
- int i;
- for (i=0;i<st->nbSubframes;i++)
- ((spx_word16_t*)ptr)[i] = compute_rms16(st->exc+i*st->subframeSize, st->subframeSize);
- }
- break;
- case SPEEX_GET_DTX_STATUS:
- *((spx_int32_t*)ptr) = st->dtx_enabled;
- break;
- case SPEEX_SET_INNOVATION_SAVE:
- st->innov_save = (spx_word16_t*)ptr;
- break;
- case SPEEX_SET_WIDEBAND:
- st->isWideband = *((spx_int32_t*)ptr);
- break;
- case SPEEX_GET_STACK:
- *((char**)ptr) = st->stack;
- break;
- default:
- speex_warning_int("Unknown nb_ctl request: ", request);
- return -1;
- }
- return 0;
-}