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authorDan Everton <dan@iocaine.org>2007-02-09 10:06:53 +0000
committerDan Everton <dan@iocaine.org>2007-02-09 10:06:53 +0000
commitebc58c9f066e89088bfb6b8193b4266e5145d8e1 (patch)
tree309ccacdc57fae01fb2231b9e2b2faf468129b3c /apps/codecs/libspeex/nb_celp.c
parent46424301c3c3974c9e1e682886f51a4828e4534a (diff)
downloadrockbox-ebc58c9f066e89088bfb6b8193b4266e5145d8e1.tar.gz
rockbox-ebc58c9f066e89088bfb6b8193b4266e5145d8e1.zip
Add Speex playback support. Patch from FS #5607 thanks to Frederik Vestre.
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@12241 a1c6a512-1295-4272-9138-f99709370657
Diffstat (limited to 'apps/codecs/libspeex/nb_celp.c')
-rw-r--r--apps/codecs/libspeex/nb_celp.c2055
1 files changed, 2055 insertions, 0 deletions
diff --git a/apps/codecs/libspeex/nb_celp.c b/apps/codecs/libspeex/nb_celp.c
new file mode 100644
index 0000000000..fba6d612d1
--- /dev/null
+++ b/apps/codecs/libspeex/nb_celp.c
@@ -0,0 +1,2055 @@
+/* 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.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 "misc.h"
+#include "math_approx.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]={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]={1841, 3883, 6051, 8062, 10444, 13580, 18560};
+const spx_word16_t exc_gain_quant_scal3[8]={1002, 2680, 5086, 7016, 9108, 11781, 15380, 21740};
+const spx_word16_t exc_gain_quant_scal1_bound[1]={14385};
+const spx_word16_t exc_gain_quant_scal1[2]={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 lpc_window[];
+
+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->lag_factor=mode->lag_factor;
+ 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 EPIC_48K
+ st->lbr_48k=mode->lbr48k;
+#endif
+
+#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 = (spx_word16_t*)speex_alloc((st->lpcSize+1)*sizeof(spx_word16_t));
+ for (i=0;i<st->lpcSize+1;i++)
+ st->lagWindow[i]=16384*exp(-.5*sqr(2*M_PI*st->lag_factor*i));
+
+ 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]=LSP_SCALING*(M_PI*((float)(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_save = NULL;
+
+ st->pitch = (int*)speex_alloc((st->nbSubframes)*sizeof(int));
+
+ 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->abr_enabled = 0;
+ st->abr_drift = 0;
+
+ st->plc_tuning = 2;
+ st->complexity=2;
+ st->sampling_rate=8000;
+ st->dtx_count=0;
+ st->isWideband = 0;
+ st->highpass_enabled = 1;
+
+#ifdef ENABLE_VALGRIND
+ VALGRIND_MAKE_READABLE(st, (st->stack-(char*)st));
+#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->lagWindow);
+
+ 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);
+
+ vbr_destroy(st->vbr);
+ speex_free (st->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);
+#ifdef EPIC_48K
+ int pitch_half[2];
+ int ol_pitch_id=0;
+#endif
+ 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)*sizeof(spx_word16_t));
+ speex_move(st->swBuf, st->swBuf+st->frameSize, (st->max_pitch+2)*sizeof(spx_word16_t));
+
+ 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) */
+ {
+ 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->complexity>2 || !st->submodes[st->submodeID] || st->vbr_enabled || st->vad_enabled || SUBMODE(forced_pitch_gain) ||
+ SUBMODE(lbr_pitch) != -1)
+ {
+ 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);
+
+ for (i=0;i<st->windowSize-st->frameSize;i++)
+ st->sw[i] = st->winBuf[i];
+ for (;i<st->frameSize;i++)
+ st->sw[i] = in[i-st->windowSize+st->frameSize];
+ 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);*/
+
+#ifdef EPIC_48K
+ if (st->lbr_48k)
+ {
+ if (ol_pitch < st->min_pitch+2)
+ ol_pitch = st->min_pitch+2;
+ if (ol_pitch > st->max_pitch-2)
+ ol_pitch = st->max_pitch-2;
+ open_loop_nbest_pitch(st->sw, ol_pitch-2, ol_pitch+2, st->frameSize>>1,
+ &pitch_half[0], nol_pitch_coef, 1, stack);
+ open_loop_nbest_pitch(st->sw+(st->frameSize>>1), pitch_half[0]-1, pitch_half[0]+2, st->frameSize>>1,
+ &pitch_half[1], nol_pitch_coef, 1, stack);
+ }
+#endif
+ } else {
+ ol_pitch=0;
+ ol_pitch_coef=0;
+ }
+
+ /*Compute "real" excitation*/
+ for (i=0;i<st->windowSize-st->frameSize;i++)
+ st->exc[i] = st->winBuf[i];
+ for (;i<st->frameSize;i++)
+ st->exc[i] = in[i-st->windowSize+st->frameSize];
+ fir_mem16(st->exc, interp_lpc, st->exc, st->frameSize, st->lpcSize, st->mem_exc, stack);
+
+ /* Compute open-loop excitation gain */
+#ifdef EPIC_48K
+ if (st->lbr_48k)
+ {
+ float ol1=0,ol2=0;
+ float ol_gain2;
+ ol1 = compute_rms16(st->exc, st->frameSize>>1);
+ ol2 = compute_rms16(st->exc+(st->frameSize>>1), st->frameSize>>1);
+ ol1 *= ol1*(st->frameSize>>1);
+ ol2 *= ol2*(st->frameSize>>1);
+
+ ol_gain2=ol1;
+ if (ol2>ol1)
+ ol_gain2=ol2;
+ ol_gain2 = sqrt(2*ol_gain2*(ol1+ol2))*1.3*(1-.5*GAIN_SCALING_1*GAIN_SCALING_1*ol_pitch_coef*ol_pitch_coef);
+
+ ol_gain=SHR(sqrt(1+ol_gain2/st->frameSize),SIG_SHIFT);
+
+ } else
+#endif
+ {
+ spx_word16_t g = compute_rms16(st->exc, st->frameSize);
+ if (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
+ for(i=0;i<256-st->frameSize;i++)
+ st->psy_window[i] = st->psy_window[i+st->frameSize];
+ for(i=0;i<st->frameSize;i++)
+ st->psy_window[256-st->frameSize+i] = in[i];
+ compute_curve(st->psy, st->psy_window, st->curve);
+ /*print_vec(st->curve, 128, "curve");*/
+ if (st->first)
+ for (i=0;i<128;i++)
+ st->old_curve[i] = st->curve[i];
+#endif
+
+ /*VBR stuff*/
+ 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)
+ {
+ int 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)
+ {
+ int 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;
+ }
+
+ if (st->encode_submode)
+ {
+#ifdef EPIC_48K
+ if (!st->lbr_48k) {
+#endif
+
+ /* 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);
+
+#ifdef EPIC_48K
+ }
+#endif
+ }
+
+ /* 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_move(st->winBuf, in+2*st->frameSize-st->windowSize, (st->windowSize-st->frameSize)*sizeof(spx_word16_t));
+
+ /* 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
+
+#ifdef EPIC_48K
+ if (st->lbr_48k) {
+ speex_bits_pack(bits, pitch_half[0]-st->min_pitch, 7);
+ speex_bits_pack(bits, pitch_half[1]-pitch_half[0]+1, 2);
+
+ {
+ int quant = (int)floor(.5+7.4*GAIN_SCALING_1*ol_pitch_coef);
+ if (quant>7)
+ quant=7;
+ if (quant<0)
+ quant=0;
+ ol_pitch_id=quant;
+ speex_bits_pack(bits, quant, 3);
+ ol_pitch_coef=GAIN_SCALING*0.13514*quant;
+
+ }
+ {
+ int qe = (int)(floor(.5+2.1*log(ol_gain*1.0/SIG_SCALING)))-2;
+ if (qe<0)
+ qe=0;
+ if (qe>15)
+ qe=15;
+ ol_gain = exp((qe+2)/2.1)*SIG_SCALING;
+ speex_bits_pack(bits, qe, 4);
+ }
+
+ } else {
+#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;
+ quant = (int)floor(.5+15*ol_pitch_coef*GAIN_SCALING_1);
+ if (quant>15)
+ quant=15;
+ if (quant<0)
+ quant=0;
+ speex_bits_pack(bits, quant, 4);
+ ol_pitch_coef=GAIN_SCALING*0.066667*quant;
+ }
+
+
+ /*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
+
+
+#ifdef EPIC_48K
+ }
+#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;
+ spx_sig_t *innov_save = NULL;
+ int pitch;
+ int response_bound = st->subframeSize;
+#ifdef EPIC_48K
+ if (st->lbr_48k)
+ {
+ if (sub*2 < st->nbSubframes)
+ ol_pitch = pitch_half[0];
+ else
+ ol_pitch = pitch_half[1];
+ }
+#endif
+
+ /* Offset relative to start of frame */
+ offset = st->subframeSize*sub;
+ /* Excitation */
+ exc=st->exc+offset;
+ /* Weighted signal */
+ sw=st->sw+offset;
+ /* Pointer for saving innovation */
+ if (st->innov_save)
+ innov_save = st->innov_save+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
+ {
+ bw_lpc2[0]=1;
+ for (i=1;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 */
+ if (st->windowSize-st->frameSize != st->subframeSize)
+ speex_error("windowSize-frameSize != 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);
+ for (i=response_bound;i<st->subframeSize;i++)
+ ringing[i]=0;
+#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 */
+ for (i=0;i<st->subframeSize;i++)
+ target[i]=SUB16(sw[i],PSHR32(ringing[i],1));
+
+ /* Reset excitation */
+ for (i=0;i<st->subframeSize;i++)
+ exc[i]=0;
+
+ /* If we have a long-term predictor (otherwise, something's wrong) */
+ if (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;
+
+#ifdef EPIC_48K
+ if (st->lbr_48k)
+ {
+ 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, ol_pitch_id, st->plc_tuning, &st->cumul_gain);
+ } else {
+#endif
+
+ /* 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);
+#ifdef EPIC_48K
+ }
+#endif
+
+ st->pitch[sub]=pitch;
+ } else {
+ speex_error ("No pitch prediction, what's wrong");
+ }
+
+ /* Quantization of innovation */
+ {
+ spx_word32_t ener=0;
+ spx_word16_t fine_gain;
+
+ for (i=0;i<st->subframeSize;i++)
+ innov[i]=0;
+
+ for (i=0;i<st->subframeSize;i++)
+ real_exc[i] = SUB16(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 */
+ if (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(PSHR32(ADD32(SHL32(exc32[i],1),innov[i]),SIG_SHIFT));
+ } else {
+ speex_error("No fixed codebook");
+ }
+
+ if (innov_save)
+ {
+ for (i=0;i<st->subframeSize;i++)
+ innov_save[i] = innov[i];
+ }
+ /* 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);
+ for (i=0;i<st->subframeSize;i++)
+ innov2[i]=0;
+ for (i=0;i<st->subframeSize;i++)
+ target[i]=MULT16_16_P13(QCONST16(2.2,13), 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(0.454545,15),ener), st->subframeSize);
+ for (i=0;i<st->subframeSize;i++)
+ exc[i] = ADD32(exc[i],PSHR32(innov2[i],SIG_SHIFT));
+ if (innov_save)
+ {
+ for (i=0;i<st->subframeSize;i++)
+ innov_save[i] = ADD32(innov_save[i],innov2[i]);
+ }
+ stack = tmp_stack;
+ }
+
+ }
+
+ for (i=0;i<st->subframeSize;i++)
+ sw[i] = exc[i];
+ /* Final signal synthesis from excitation */
+ iir_mem16(sw, 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)
+ {
+ for (i=0;i<128;i++)
+ st->old_curve[i] = st->curve[i];
+ }
+#endif
+
+ if (st->submodeID==1)
+ {
+ if (st->dtx_count)
+ speex_bits_pack(bits, 15, 4);
+ else
+ speex_bits_pack(bits, 0, 4);
+ }
+
+ /* The next frame will not be the first (Duh!) */
+ st->first = 0;
+ speex_move(st->winBuf, in+2*st->frameSize-st->windowSize, (st->windowSize-st->frameSize)*sizeof(spx_word16_t));
+
+ if (SUBMODE(innovation_quant) == noise_codebook_quant || st->submodeID==0)
+ st->bounded_pitch = 1;
+ else
+ st->bounded_pitch = 0;
+
+ return 1;
+}
+
+void *nb_decoder_init(const SpeexMode *m)
+{
+ DecState *st;
+ const SpeexNBMode *mode;
+ int i;
+
+ mode=(const SpeexNBMode*)m->mode;
+ st = (DecState *)speex_alloc(sizeof(DecState));
+ if (!st)
+ return NULL;
+#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;
+#ifdef EPIC_48K
+ st->lbr_48k=mode->lbr48k;
+#endif
+
+ 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;
+ for (i=0;i<st->frameSize + st->max_pitch + 1;i++)
+ st->excBuf[i]=0;
+
+ 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 ENABLE_VALGRIND
+ VALGRIND_MAKE_READABLE(st, (st->stack-(char*)st));
+#endif
+ return st;
+}
+
+void nb_decoder_destroy(void *state)
+{
+ DecState *st;
+ st=(DecState*)state;
+
+#if !(defined(VAR_ARRAYS) || defined (USE_ALLOCA))
+ speex_free_scratch(st->stack);
+#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
+
+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 = SHL(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)*sizeof(spx_word16_t));
+
+
+ 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);
+ }
+
+ for (i=0;i<st->frameSize;i++)
+ out[i]=st->exc[i-st->subframeSize];
+ bw_lpc(QCONST16(.98,15), st->interp_qlpc, st->interp_qlpc, st->lpcSize);
+ iir_mem16(out, 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++] = PSHR(pitch_gain,9);
+ if (st->pitch_gain_buf_idx > 2) /* rollover */
+ st->pitch_gain_buf_idx = 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;
+#ifdef EPIC_48K
+ int pitch_half[2];
+ int ol_pitch_id=0;
+#endif
+ 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) */
+ if (!bits)
+ {
+ nb_decode_lost(st, out, stack);
+ return 0;
+ }
+
+ if (st->encode_submode)
+ {
+#ifdef EPIC_48K
+ if (!st->lbr_48k) {
+#endif
+
+ /* 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);
+ if (advance < 0)
+ {
+ speex_warning ("Invalid wideband mode encountered. Corrupted stream?");
+ 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);
+ if (advance < 0)
+ {
+ speex_warning ("Invalid wideband mode encountered: corrupted stream?");
+ return -2;
+ }
+ advance -= (SB_SUBMODE_BITS+1);
+ speex_bits_advance(bits, advance);
+ wideband = speex_bits_unpack_unsigned(bits, 1);
+ if (wideband)
+ {
+ speex_warning ("More than two wideband layers found: corrupted stream?");
+ 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_warning("Invalid mode encountered: corrupted stream?");
+ return -2;
+ }
+
+ } while (m>8);
+
+ /* Get the sub-mode that was used */
+ st->submodeID = m;
+#ifdef EPIC_48K
+ }
+#endif
+ }
+
+ }
+
+ /* Shift all buffers by one frame */
+ speex_move(st->excBuf, st->excBuf+st->frameSize, (2*st->max_pitch + st->subframeSize + 12)*sizeof(spx_word16_t));
+
+ /* 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(GAMMA_SCALING*.93, st->interp_qlpc, lpc, st->lpcSize);
+ {
+ float innov_gain=0;
+ float pgain=GAIN_SCALING_1*st->last_pitch_gain;
+ if (pgain>.6)
+ pgain=.6;
+ /* 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;
+
+ for (i=0;i<st->frameSize;i++)
+ out[i] = st->exc[i];
+ /* Final signal synthesis from excitation */
+ iir_mem16(out, 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];
+ }
+
+#ifdef EPIC_48K
+ if (st->lbr_48k) {
+ pitch_half[0] = st->min_pitch+speex_bits_unpack_unsigned(bits, 7);
+ pitch_half[1] = pitch_half[0]+speex_bits_unpack_unsigned(bits, 2)-1;
+
+ ol_pitch_id = speex_bits_unpack_unsigned(bits, 3);
+ ol_pitch_coef=GAIN_SCALING*0.13514*ol_pitch_id;
+
+ {
+ int qe;
+ qe = speex_bits_unpack_unsigned(bits, 4);
+ ol_gain = SIG_SCALING*exp((qe+2)/2.1),SIG_SHIFT;
+ }
+
+ } else {
+#endif
+
+ /* 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=GAIN_SCALING*0.066667*quant;
+ }
+
+ /* Get global excitation gain */
+ {
+ int qe;
+ qe = speex_bits_unpack_unsigned(bits, 5);
+#ifdef FIXED_POINT
+ ol_gain = MULT16_32_Q15(28406,ol_gain_table[qe]);
+#else
+ ol_gain = SIG_SCALING*exp(qe/3.5);
+#endif
+ }
+#ifdef EPIC_48K
+ }
+#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 *sp;
+ spx_sig_t *innov_save = NULL;
+ spx_word16_t tmp;
+
+#ifdef EPIC_48K
+ if (st->lbr_48k)
+ {
+ if (sub*2 < st->nbSubframes)
+ ol_pitch = pitch_half[0];
+ else
+ ol_pitch = pitch_half[1];
+ }
+#endif
+
+ /* Offset relative to start of frame */
+ offset = st->subframeSize*sub;
+ /* Excitation */
+ exc=st->exc+offset;
+ /* Original signal */
+ sp=out+offset;
+ if (st->innov_save)
+ innov_save = st->innov_save+offset;
+
+
+ /* Reset excitation */
+ for (i=0;i<st->subframeSize;i++)
+ exc[i]=0;
+
+ /*Adaptive codebook contribution*/
+ if (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;
+ }
+
+
+#ifdef EPIC_48K
+ if (st->lbr_48k)
+ {
+ 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, ol_pitch_id);
+ } else {
+#endif
+
+ 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);
+
+#ifdef EPIC_48K
+ }
+#endif
+
+ 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;
+ }
+ } else {
+ speex_error("No pitch prediction, what's wrong");
+ }
+
+ /* Unquantize the innovation */
+ {
+ int q_energy;
+ spx_word32_t ener;
+
+ for (i=0;i<st->subframeSize;i++)
+ innov[i]=0;
+
+ /* 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;
+ }
+
+ if (SUBMODE(innovation_unquant))
+ {
+ /*Fixed codebook contribution*/
+ SUBMODE(innovation_unquant)(innov, SUBMODE(innovation_params), st->subframeSize, bits, stack, &st->seed);
+ } else {
+ speex_error("No fixed codebook");
+ }
+
+ /* De-normalize innovation and update excitation */
+#ifdef FIXED_POINT
+ signal_mul(innov, innov, ener, st->subframeSize);
+#else
+ signal_mul(innov, innov, ener, st->subframeSize);
+#endif
+ /*Vocoder mode*/
+ if (st->submodeID==1)
+ {
+ float g=ol_pitch_coef*GAIN_SCALING_1;
+
+
+ for (i=0;i<st->subframeSize;i++)
+ exc[i]=0;
+ while (st->voc_offset<st->subframeSize)
+ {
+ if (st->voc_offset>=0)
+ exc[st->voc_offset]=sqrt(1.0*ol_pitch);
+ st->voc_offset+=ol_pitch;
+ }
+ st->voc_offset -= st->subframeSize;
+
+ g=.5+2*(g-.6);
+ if (g<0)
+ g=0;
+ if (g>1)
+ g=1;
+ for (i=0;i<st->subframeSize;i++)
+ {
+ spx_word16_t exci=exc[i];
+ /* FIXME: cleanup the innov[i]/SIG_SCALING */
+ exc[i]=.8*g*exc[i]*PSHR32(ol_gain,SIG_SHIFT) + .6*g*st->voc_m1*PSHR32(ol_gain,SIG_SHIFT) + (1-.5*g)*PSHR32(innov[i],SIG_SHIFT) - .5*g*PSHR32(st->voc_m2,SIG_SHIFT);
+ st->voc_m1 = exci;
+ st->voc_m2=innov[i];
+ st->voc_mean = .95*st->voc_mean + .05*exc[i];
+ exc[i]-=st->voc_mean;
+ }
+ } else {
+ for (i=0;i<st->subframeSize;i++)
+ exc[i]=PSHR32(ADD32(SHL32(exc32[i],1),innov[i]),SIG_SHIFT);
+ /*print_vec(exc, 40, "innov");*/
+ }
+ if (innov_save)
+ {
+ for (i=0;i<st->subframeSize;i++)
+ innov_save[i] = innov[i];
+ }
+ /* 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);
+ for (i=0;i<st->subframeSize;i++)
+ innov2[i]=0;
+ SUBMODE(innovation_unquant)(innov2, SUBMODE(innovation_params), st->subframeSize, bits, stack, &st->seed);
+ signal_mul(innov2, innov2, MULT16_32_Q15(QCONST16(0.454545,15),ener), st->subframeSize);
+ for (i=0;i<st->subframeSize;i++)
+ exc[i] = ADD16(exc[i],PSHR32(innov2[i],SIG_SHIFT));
+ if (innov_save)
+ {
+ for (i=0;i<st->subframeSize;i++)
+ innov_save[i] = ADD32(innov_save[i],innov2[i]);
+ }
+ stack = tmp_stack;
+ }
+ }
+ }
+
+ 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 {
+ for (i=0;i<st->frameSize;i++)
+ out[i]=st->exc[i-st->subframeSize];
+ }
+
+ /* 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;
+ spx_word16_t *exc;
+ /* Offset relative to start of frame */
+ offset = st->subframeSize*sub;
+ /* Original signal */
+ sp=out+offset;
+ /* Excitation */
+ exc=st->exc+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(st->interp_qlpc[i+1]),EXTEND32(st->interp_qlpc[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]);*/
+
+ /* 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;
+}
+
+int nb_encoder_ctl(void *state, int request, void *ptr)
+{
+ EncState *st;
+ st=(EncState*)state;
+ switch(request)
+ {
+ case SPEEX_GET_FRAME_SIZE:
+ (*(int*)ptr) = st->frameSize;
+ break;
+ case SPEEX_SET_LOW_MODE:
+ case SPEEX_SET_MODE:
+ st->submodeSelect = st->submodeID = (*(int*)ptr);
+ break;
+ case SPEEX_GET_LOW_MODE:
+ case SPEEX_GET_MODE:
+ (*(int*)ptr) = st->submodeID;
+ break;
+ case SPEEX_SET_VBR:
+ st->vbr_enabled = (*(int*)ptr);
+ break;
+ case SPEEX_GET_VBR:
+ (*(int*)ptr) = st->vbr_enabled;
+ break;
+ case SPEEX_SET_VAD:
+ st->vad_enabled = (*(int*)ptr);
+ break;
+ case SPEEX_GET_VAD:
+ (*(int*)ptr) = st->vad_enabled;
+ break;
+ case SPEEX_SET_DTX:
+ st->dtx_enabled = (*(int*)ptr);
+ break;
+ case SPEEX_GET_DTX:
+ (*(int*)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)
+ {
+ int 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;
+ case SPEEX_SET_VBR_QUALITY:
+ st->vbr_quality = (*(float*)ptr);
+ break;
+ case SPEEX_GET_VBR_QUALITY:
+ (*(float*)ptr) = st->vbr_quality;
+ break;
+ case SPEEX_SET_QUALITY:
+ {
+ int quality = (*(int*)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 = (*(int*)ptr);
+ if (st->complexity<0)
+ st->complexity=0;
+ break;
+ case SPEEX_GET_COMPLEXITY:
+ (*(spx_int32_t*)ptr) = st->complexity;
+ break;
+ case SPEEX_SET_BITRATE:
+ {
+ int 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]=(M_PI*((float)(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 = (*(int*)ptr);
+ break;
+ case SPEEX_GET_SUBMODE_ENCODING:
+ (*(int*)ptr) = st->encode_submode;
+ break;
+ case SPEEX_GET_LOOKAHEAD:
+ (*(int*)ptr)=(st->windowSize-st->frameSize);
+ break;
+ case SPEEX_SET_PLC_TUNING:
+ st->plc_tuning = (*(int*)ptr);
+ if (st->plc_tuning>100)
+ st->plc_tuning=100;
+ break;
+ case SPEEX_GET_PLC_TUNING:
+ (*(int*)ptr)=(st->plc_tuning);
+ break;
+ 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;
+ 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;
+ spx_word16_t *e = (spx_word16_t*)ptr;
+ for (i=0;i<st->frameSize;i++)
+ e[i]=st->exc[i];
+ }
+ break;
+ case SPEEX_GET_RELATIVE_QUALITY:
+ (*(float*)ptr)=st->relative_quality;
+ break;
+ case SPEEX_SET_INNOVATION_SAVE:
+ st->innov_save = (spx_sig_t*)ptr;
+ break;
+ case SPEEX_SET_WIDEBAND:
+ st->isWideband = *((int*)ptr);
+ break;
+ default:
+ speex_warning_int("Unknown nb_ctl request: ", request);
+ return -1;
+ }
+ return 0;
+}
+
+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 = (*(int*)ptr);
+ break;
+ case SPEEX_GET_LOW_MODE:
+ case SPEEX_GET_MODE:
+ (*(int*)ptr) = st->submodeID;
+ break;
+ case SPEEX_SET_ENH:
+ st->lpc_enh_enabled = *((int*)ptr);
+ break;
+ case SPEEX_GET_ENH:
+ *((int*)ptr) = st->lpc_enh_enabled;
+ break;
+ case SPEEX_GET_FRAME_SIZE:
+ (*(int*)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 = (*(int*)ptr);
+ break;
+ case SPEEX_GET_SUBMODE_ENCODING:
+ (*(int*)ptr) = st->encode_submode;
+ break;
+ case SPEEX_GET_LOOKAHEAD:
+ (*(int*)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;
+
+ 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;
+ spx_word16_t *e = (spx_word16_t*)ptr;
+ for (i=0;i<st->frameSize;i++)
+ e[i]=st->exc[i];
+ }
+ break;
+ case SPEEX_GET_DTX_STATUS:
+ *((int*)ptr) = st->dtx_enabled;
+ break;
+ case SPEEX_SET_INNOVATION_SAVE:
+ st->innov_save = (spx_sig_t*)ptr;
+ break;
+ case SPEEX_SET_WIDEBAND:
+ st->isWideband = *((int*)ptr);
+ break;
+ default:
+ speex_warning_int("Unknown nb_ctl request: ", request);
+ return -1;
+ }
+ return 0;
+}