diff options
Diffstat (limited to 'src/libspeex/sb_celp.c')
| -rw-r--r-- | src/libspeex/sb_celp.c | 1488 |
1 files changed, 1488 insertions, 0 deletions
diff --git a/src/libspeex/sb_celp.c b/src/libspeex/sb_celp.c new file mode 100644 index 0000000..6c19ff8 --- /dev/null +++ b/src/libspeex/sb_celp.c @@ -0,0 +1,1488 @@ +/* Copyright (C) 2002-2006 Jean-Marc Valin + File: sb_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 "sb_celp.h" +#include "filters.h" +#include "lpc.h" +#include "lsp.h" +#include "stack_alloc.h" +#include "cb_search.h" +#include "quant_lsp.h" +#include "vq.h" +#include "ltp.h" +#include "arch.h" +#include "math_approx.h" +#include "os_support.h" + +#ifndef NULL +#define NULL 0 +#endif + +/* 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 SB_ENC_STACK +#define SB_ENC_STACK (10000*sizeof(spx_sig_t)) +#endif + +#ifndef SB_DEC_STACK +#define SB_DEC_STACK (6000*sizeof(spx_sig_t)) +#endif + + +#ifdef DISABLE_WIDEBAND +void *sb_encoder_init(const SpeexMode *m) +{ + speex_fatal("Wideband and Ultra-wideband are disabled"); + return NULL; +} +void sb_encoder_destroy(void *state) +{ + speex_fatal("Wideband and Ultra-wideband are disabled"); +} +int sb_encode(void *state, void *vin, SpeexBits *bits) +{ + speex_fatal("Wideband and Ultra-wideband are disabled"); + return -2; +} +void *sb_decoder_init(const SpeexMode *m) +{ + speex_fatal("Wideband and Ultra-wideband are disabled"); + return NULL; +} +void sb_decoder_destroy(void *state) +{ + speex_fatal("Wideband and Ultra-wideband are disabled"); +} +int sb_decode(void *state, SpeexBits *bits, void *vout) +{ + speex_fatal("Wideband and Ultra-wideband are disabled"); + return -2; +} +int sb_encoder_ctl(void *state, int request, void *ptr) +{ + speex_fatal("Wideband and Ultra-wideband are disabled"); + return -2; +} +int sb_decoder_ctl(void *state, int request, void *ptr) +{ + speex_fatal("Wideband and Ultra-wideband are disabled"); + return -2; +} +#else + + +#ifndef M_PI +#define M_PI 3.14159265358979323846 /* pi */ +#endif + +#define sqr(x) ((x)*(x)) + +#define SUBMODE(x) st->submodes[st->submodeID]->x + +#ifdef FIXED_POINT +static const spx_word16_t gc_quant_bound[16] = {125, 164, 215, 282, 370, 484, 635, 832, 1090, 1428, 1871, 2452, 3213, 4210, 5516, 7228}; +static const spx_word16_t fold_quant_bound[32] = { + 39, 44, 50, 57, 64, 73, 83, 94, + 106, 120, 136, 154, 175, 198, 225, 255, + 288, 327, 370, 420, 476, 539, 611, 692, + 784, 889, 1007, 1141, 1293, 1465, 1660, 1881}; +#define LSP_MARGIN 410 +#define LSP_DELTA1 6553 +#define LSP_DELTA2 1638 + +#else + +static const spx_word16_t gc_quant_bound[16] = { + 0.97979, 1.28384, 1.68223, 2.20426, 2.88829, 3.78458, 4.95900, 6.49787, + 8.51428, 11.15642, 14.61846, 19.15484, 25.09895, 32.88761, 43.09325, 56.46588}; +static const spx_word16_t fold_quant_bound[32] = { + 0.30498, 0.34559, 0.39161, 0.44375, 0.50283, 0.56979, 0.64565, 0.73162, + 0.82903, 0.93942, 1.06450, 1.20624, 1.36685, 1.54884, 1.75506, 1.98875, + 2.25355, 2.55360, 2.89361, 3.27889, 3.71547, 4.21018, 4.77076, 5.40598, + 6.12577, 6.94141, 7.86565, 8.91295, 10.09969, 11.44445, 12.96826, 14.69497}; + +#define LSP_MARGIN .05 +#define LSP_DELTA1 .2 +#define LSP_DELTA2 .05 + +#endif + +#define QMF_ORDER 64 + +#ifdef FIXED_POINT +static const spx_word16_t h0[64] = {2, -7, -7, 18, 15, -39, -25, 75, 35, -130, -41, 212, 38, -327, -17, 483, -32, -689, 124, 956, -283, -1307, 543, 1780, -973, -2467, 1733, 3633, -3339, -6409, 9059, 30153, 30153, 9059, -6409, -3339, 3633, 1733, -2467, -973, 1780, 543, -1307, -283, 956, 124, -689, -32, 483, -17, -327, 38, 212, -41, -130, 35, 75, -25, -39, 15, 18, -7, -7, 2}; + +#else +static const float h0[64] = { + 3.596189e-05f, -0.0001123515f, + -0.0001104587f, 0.0002790277f, + 0.0002298438f, -0.0005953563f, + -0.0003823631f, 0.00113826f, + 0.0005308539f, -0.001986177f, + -0.0006243724f, 0.003235877f, + 0.0005743159f, -0.004989147f, + -0.0002584767f, 0.007367171f, + -0.0004857935f, -0.01050689f, + 0.001894714f, 0.01459396f, + -0.004313674f, -0.01994365f, + 0.00828756f, 0.02716055f, + -0.01485397f, -0.03764973f, + 0.026447f, 0.05543245f, + -0.05095487f, -0.09779096f, + 0.1382363f, 0.4600981f, + 0.4600981f, 0.1382363f, + -0.09779096f, -0.05095487f, + 0.05543245f, 0.026447f, + -0.03764973f, -0.01485397f, + 0.02716055f, 0.00828756f, + -0.01994365f, -0.004313674f, + 0.01459396f, 0.001894714f, + -0.01050689f, -0.0004857935f, + 0.007367171f, -0.0002584767f, + -0.004989147f, 0.0005743159f, + 0.003235877f, -0.0006243724f, + -0.001986177f, 0.0005308539f, + 0.00113826f, -0.0003823631f, + -0.0005953563f, 0.0002298438f, + 0.0002790277f, -0.0001104587f, + -0.0001123515f, 3.596189e-05f +}; + +#endif + +extern const spx_word16_t lag_window[]; +extern const spx_word16_t lpc_window[]; + + +void *sb_encoder_init(const SpeexMode *m) +{ + int i; + spx_int32_t tmp; + SBEncState *st; + const SpeexSBMode *mode; + + st = (SBEncState*)speex_alloc(sizeof(SBEncState)); + if (!st) + return NULL; + st->mode = m; + mode = (const SpeexSBMode*)m->mode; + + + st->st_low = speex_encoder_init(mode->nb_mode); +#if defined(VAR_ARRAYS) || defined (USE_ALLOCA) + st->stack = NULL; +#else + /*st->stack = (char*)speex_alloc_scratch(SB_ENC_STACK);*/ + speex_encoder_ctl(st->st_low, SPEEX_GET_STACK, &st->stack); +#endif + + st->full_frame_size = 2*mode->frameSize; + st->frame_size = mode->frameSize; + st->subframeSize = mode->subframeSize; + st->nbSubframes = mode->frameSize/mode->subframeSize; + st->windowSize = st->frame_size+st->subframeSize; + st->lpcSize=mode->lpcSize; + + st->encode_submode = 1; + st->submodes=mode->submodes; + st->submodeSelect = st->submodeID=mode->defaultSubmode; + + tmp=9; + speex_encoder_ctl(st->st_low, SPEEX_SET_QUALITY, &tmp); + tmp=1; + speex_encoder_ctl(st->st_low, SPEEX_SET_WIDEBAND, &tmp); + + st->lpc_floor = mode->lpc_floor; + st->gamma1=mode->gamma1; + st->gamma2=mode->gamma2; + st->first=1; + + st->high=(spx_word16_t*)speex_alloc((st->windowSize-st->frame_size)*sizeof(spx_word16_t)); + + st->h0_mem=(spx_word16_t*)speex_alloc((QMF_ORDER)*sizeof(spx_word16_t)); + st->h1_mem=(spx_word16_t*)speex_alloc((QMF_ORDER)*sizeof(spx_word16_t)); + + st->window= lpc_window; + + 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->interp_qlpc = (spx_coef_t*)speex_alloc(st->lpcSize*sizeof(spx_coef_t)); + st->pi_gain = (spx_word32_t*)speex_alloc((st->nbSubframes)*sizeof(spx_word32_t)); + st->exc_rms = (spx_word16_t*)speex_alloc((st->nbSubframes)*sizeof(spx_word16_t)); + st->innov_rms_save = NULL; + + st->mem_sp = (spx_mem_t*)speex_alloc((st->lpcSize)*sizeof(spx_mem_t)); + st->mem_sp2 = (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)); + + for (i=0;i<st->lpcSize;i++) + st->old_lsp[i]= DIV32(MULT16_16(QCONST16(3.1415927f, LSP_SHIFT), i+1), st->lpcSize+1); + +#ifndef DISABLE_VBR + st->vbr_quality = 8; + st->vbr_enabled = 0; + st->vbr_max = 0; + st->vbr_max_high = 20000; /* We just need a big value here */ + st->vad_enabled = 0; + st->abr_enabled = 0; + st->relative_quality=0; +#endif /* #ifndef DISABLE_VBR */ + + st->complexity=2; + speex_encoder_ctl(st->st_low, SPEEX_GET_SAMPLING_RATE, &st->sampling_rate); + st->sampling_rate*=2; +#ifdef ENABLE_VALGRIND + VALGRIND_MAKE_READABLE(st, (st->stack-(char*)st)); +#endif + return st; +} + +void sb_encoder_destroy(void *state) +{ + SBEncState *st=(SBEncState*)state; + + speex_encoder_destroy(st->st_low); +#if !(defined(VAR_ARRAYS) || defined (USE_ALLOCA)) + /*speex_free_scratch(st->stack);*/ +#endif + + speex_free(st->high); + + speex_free(st->h0_mem); + speex_free(st->h1_mem); + + speex_free(st->old_lsp); + speex_free(st->old_qlsp); + speex_free(st->interp_qlpc); + speex_free(st->pi_gain); + speex_free(st->exc_rms); + + speex_free(st->mem_sp); + speex_free(st->mem_sp2); + speex_free(st->mem_sw); + + + speex_free(st); +} + + +int sb_encode(void *state, void *vin, SpeexBits *bits) +{ + SBEncState *st; + int i, roots, sub; + char *stack; + VARDECL(spx_mem_t *mem); + VARDECL(spx_sig_t *innov); + VARDECL(spx_word16_t *target); + VARDECL(spx_word16_t *syn_resp); + VARDECL(spx_word32_t *low_pi_gain); + spx_word16_t *low; + spx_word16_t *high; + VARDECL(spx_word16_t *low_exc_rms); + VARDECL(spx_word16_t *low_innov_rms); + const SpeexSBMode *mode; + spx_int32_t dtx; + spx_word16_t *in = (spx_word16_t*)vin; + spx_word16_t e_low=0, e_high=0; + VARDECL(spx_coef_t *lpc); + VARDECL(spx_coef_t *interp_lpc); + VARDECL(spx_coef_t *bw_lpc1); + VARDECL(spx_coef_t *bw_lpc2); + VARDECL(spx_lsp_t *lsp); + VARDECL(spx_lsp_t *qlsp); + VARDECL(spx_lsp_t *interp_lsp); + VARDECL(spx_lsp_t *interp_qlsp); + + st = (SBEncState*)state; + stack=st->stack; + mode = (const SpeexSBMode*)(st->mode->mode); + low = in; + high = in+st->frame_size; + + /* High-band buffering / sync with low band */ + /* Compute the two sub-bands by filtering with QMF h0*/ + qmf_decomp(in, h0, low, high, st->full_frame_size, QMF_ORDER, st->h0_mem, stack); + +#ifndef DISABLE_VBR + if (st->vbr_enabled || st->vad_enabled) + { + /* Need to compute things here before the signal is trashed by the encoder */ + /*FIXME: Are the two signals (low, high) in sync? */ + e_low = compute_rms16(low, st->frame_size); + e_high = compute_rms16(high, st->frame_size); + } +#endif /* #ifndef DISABLE_VBR */ + + ALLOC(low_innov_rms, st->nbSubframes, spx_word16_t); + speex_encoder_ctl(st->st_low, SPEEX_SET_INNOVATION_SAVE, low_innov_rms); + /* Encode the narrowband part*/ + speex_encode_native(st->st_low, low, bits); + + high = high - (st->windowSize-st->frame_size); + SPEEX_COPY(high, st->high, st->windowSize-st->frame_size); + SPEEX_COPY(st->high, &high[st->frame_size], st->windowSize-st->frame_size); + + + ALLOC(low_pi_gain, st->nbSubframes, spx_word32_t); + ALLOC(low_exc_rms, st->nbSubframes, spx_word16_t); + speex_encoder_ctl(st->st_low, SPEEX_GET_PI_GAIN, low_pi_gain); + speex_encoder_ctl(st->st_low, SPEEX_GET_EXC, low_exc_rms); + + speex_encoder_ctl(st->st_low, SPEEX_GET_LOW_MODE, &dtx); + + if (dtx==0) + dtx=1; + else + dtx=0; + + ALLOC(lpc, st->lpcSize, spx_coef_t); + ALLOC(interp_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); + + { + VARDECL(spx_word16_t *autocorr); + VARDECL(spx_word16_t *w_sig); + ALLOC(autocorr, st->lpcSize+1, spx_word16_t); + ALLOC(w_sig, st->windowSize, spx_word16_t); + /* Window for analysis */ + /* FIXME: This is a kludge */ + if (st->subframeSize==80) + { + for (i=0;i<st->windowSize;i++) + w_sig[i] = EXTRACT16(SHR32(MULT16_16(high[i],st->window[i>>1]),SIG_SHIFT)); + } else { + for (i=0;i<st->windowSize;i++) + w_sig[i] = EXTRACT16(SHR32(MULT16_16(high[i],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); + if (roots!=st->lpcSize) + { + roots = lpc_to_lsp (lpc, st->lpcSize, lsp, 10, LSP_DELTA2, stack); + if (roots!=st->lpcSize) { + /*If we can't find all LSP's, do some damage control and use a flat filter*/ + for (i=0;i<st->lpcSize;i++) + { + lsp[i]=st->old_lsp[i]; + } + } + } + +#ifndef DISABLE_VBR + /* VBR code */ + if ((st->vbr_enabled || st->vad_enabled) && !dtx) + { + float ratio; + 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>.1) + qual_change=.1; + if (qual_change<-.1) + qual_change=-.1; + } + st->vbr_quality += qual_change; + if (st->vbr_quality>10) + st->vbr_quality=10; + if (st->vbr_quality<0) + st->vbr_quality=0; + } + + + ratio = 2*log((1.f+e_high)/(1.f+e_low)); + + speex_encoder_ctl(st->st_low, SPEEX_GET_RELATIVE_QUALITY, &st->relative_quality); + if (ratio<-4) + ratio=-4; + if (ratio>2) + ratio=2; + /*if (ratio>-2)*/ + if (st->vbr_enabled) + { + spx_int32_t modeid; + modeid = mode->nb_modes-1; + st->relative_quality+=1.0*(ratio+2); + if (st->relative_quality<-1) + st->relative_quality=-1; + while (modeid) + { + int v1; + float thresh; + v1=(int)floor(st->vbr_quality); + if (v1==10) + thresh = mode->vbr_thresh[modeid][v1]; + else + thresh = (st->vbr_quality-v1) * mode->vbr_thresh[modeid][v1+1] + + (1+v1-st->vbr_quality) * mode->vbr_thresh[modeid][v1]; + if (st->relative_quality >= thresh && st->sampling_rate*st->submodes[modeid]->bits_per_frame/st->full_frame_size <= st->vbr_max_high) + break; + modeid--; + } + speex_encoder_ctl(state, SPEEX_SET_HIGH_MODE, &modeid); + 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 */ + int modeid; + if (st->relative_quality<2.0) + modeid=1; + else + modeid=st->submodeSelect; + /*speex_encoder_ctl(state, SPEEX_SET_MODE, &mode);*/ + st->submodeID=modeid; + + } + /*fprintf (stderr, "%f %f\n", ratio, low_qual);*/ + } +#endif /* #ifndef DISABLE_VBR */ + + if (st->encode_submode) + { + speex_bits_pack(bits, 1, 1); + if (dtx) + speex_bits_pack(bits, 0, SB_SUBMODE_BITS); + else + speex_bits_pack(bits, st->submodeID, SB_SUBMODE_BITS); + } + + /* If null mode (no transmission), just set a couple things to zero*/ + if (dtx || st->submodes[st->submodeID] == NULL) + { + for (i=0;i<st->frame_size;i++) + high[i]=VERY_SMALL; + + for (i=0;i<st->lpcSize;i++) + st->mem_sw[i]=0; + st->first=1; + + /* Final signal synthesis from excitation */ + iir_mem16(high, st->interp_qlpc, high, st->frame_size, st->lpcSize, st->mem_sp, stack); + + if (dtx) + return 0; + else + return 1; + } + + + /* LSP quantization */ + SUBMODE(lsp_quant)(lsp, qlsp, st->lpcSize, bits); + + if (st->first) + { + 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]; + } + + ALLOC(mem, st->lpcSize, spx_mem_t); + ALLOC(syn_resp, st->subframeSize, spx_word16_t); + ALLOC(innov, st->subframeSize, spx_sig_t); + ALLOC(target, st->subframeSize, spx_word16_t); + + for (sub=0;sub<st->nbSubframes;sub++) + { + VARDECL(spx_word16_t *exc); + VARDECL(spx_word16_t *res); + VARDECL(spx_word16_t *sw); + spx_word16_t *sp; + spx_word16_t filter_ratio; /*Q7*/ + int offset; + spx_word32_t rl, rh; /*Q13*/ + spx_word16_t eh=0; + + offset = st->subframeSize*sub; + sp=high+offset; + ALLOC(exc, st->subframeSize, spx_word16_t); + ALLOC(res, st->subframeSize, spx_word16_t); + ALLOC(sw, st->subframeSize, spx_word16_t); + + /* 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); + + lsp_enforce_margin(interp_lsp, st->lpcSize, LSP_MARGIN); + lsp_enforce_margin(interp_qlsp, st->lpcSize, LSP_MARGIN); + + lsp_to_lpc(interp_lsp, interp_lpc, st->lpcSize,stack); + lsp_to_lpc(interp_qlsp, st->interp_qlpc, st->lpcSize, stack); + + bw_lpc(st->gamma1, interp_lpc, bw_lpc1, st->lpcSize); + bw_lpc(st->gamma2, interp_lpc, bw_lpc2, st->lpcSize); + + /* Compute mid-band (4000 Hz for wideband) response of low-band and high-band + filters */ + st->pi_gain[sub]=LPC_SCALING; + rh = LPC_SCALING; + for (i=0;i<st->lpcSize;i+=2) + { + rh += st->interp_qlpc[i+1] - st->interp_qlpc[i]; + st->pi_gain[sub] += st->interp_qlpc[i] + st->interp_qlpc[i+1]; + } + + rl = low_pi_gain[sub]; +#ifdef FIXED_POINT + filter_ratio=EXTRACT16(SATURATE(PDIV32(SHL32(ADD32(rl,82),7),ADD32(82,rh)),32767)); +#else + filter_ratio=(rl+.01)/(rh+.01); +#endif + + /* Compute "real excitation" */ + fir_mem16(sp, st->interp_qlpc, exc, st->subframeSize, st->lpcSize, st->mem_sp2, stack); + /* Compute energy of low-band and high-band excitation */ + + eh = compute_rms16(exc, st->subframeSize); + + if (!SUBMODE(innovation_quant)) {/* 1 for spectral folding excitation, 0 for stochastic */ + spx_word32_t g; /*Q7*/ + spx_word16_t el; /*Q0*/ + el = low_innov_rms[sub]; + + /* Gain to use if we want to use the low-band excitation for high-band */ + g=PDIV32(MULT16_16(filter_ratio,eh),EXTEND32(ADD16(1,el))); + +#if 0 + { + char *tmp_stack=stack; + float *tmp_sig; + float g2; + ALLOC(tmp_sig, st->subframeSize, spx_sig_t); + for (i=0;i<st->lpcSize;i++) + mem[i]=st->mem_sp[i]; + iir_mem2(st->low_innov+offset, st->interp_qlpc, tmp_sig, st->subframeSize, st->lpcSize, mem); + g2 = compute_rms(sp, st->subframeSize)/(.01+compute_rms(tmp_sig, st->subframeSize)); + /*fprintf (stderr, "gains: %f %f\n", g, g2);*/ + g = g2; + stack = tmp_stack; + } +#endif + + /*print_vec(&g, 1, "gain factor");*/ + /* Gain quantization */ + { + int quant = scal_quant(g, fold_quant_bound, 32); + /*speex_warning_int("tata", quant);*/ + if (quant<0) + quant=0; + if (quant>31) + quant=31; + speex_bits_pack(bits, quant, 5); + } + if (st->innov_rms_save) + { + st->innov_rms_save[sub] = eh; + } + st->exc_rms[sub] = eh; + } else { + spx_word16_t gc; /*Q7*/ + spx_word32_t scale; /*Q14*/ + spx_word16_t el; /*Q0*/ + el = low_exc_rms[sub]; /*Q0*/ + + gc = PDIV32_16(MULT16_16(filter_ratio,1+eh),1+el); + + /* This is a kludge that cleans up a historical bug */ + if (st->subframeSize==80) + gc = MULT16_16_P15(QCONST16(0.70711f,15),gc); + /*printf ("%f %f %f %f\n", el, eh, filter_ratio, gc);*/ + { + int qgc = scal_quant(gc, gc_quant_bound, 16); + speex_bits_pack(bits, qgc, 4); + gc = MULT16_16_Q15(QCONST16(0.87360,15),gc_quant_bound[qgc]); + } + if (st->subframeSize==80) + gc = MULT16_16_P14(QCONST16(1.4142f,14), gc); + + scale = SHL32(MULT16_16(PDIV32_16(SHL32(EXTEND32(gc),SIG_SHIFT-6),filter_ratio),(1+el)),6); + + compute_impulse_response(st->interp_qlpc, bw_lpc1, bw_lpc2, syn_resp, st->subframeSize, st->lpcSize, stack); + + + /* Reset excitation */ + for (i=0;i<st->subframeSize;i++) + res[i]=VERY_SMALL; + + /* Compute zero response (ringing) of A(z/g1) / ( A(z/g2) * Aq(z) ) */ + for (i=0;i<st->lpcSize;i++) + mem[i]=st->mem_sp[i]; + iir_mem16(res, st->interp_qlpc, res, st->subframeSize, st->lpcSize, mem, stack); + + for (i=0;i<st->lpcSize;i++) + mem[i]=st->mem_sw[i]; + filter_mem16(res, bw_lpc1, bw_lpc2, res, st->subframeSize, st->lpcSize, mem, stack); + + /* Compute weighted signal */ + for (i=0;i<st->lpcSize;i++) + mem[i]=st->mem_sw[i]; + filter_mem16(sp, bw_lpc1, bw_lpc2, sw, st->subframeSize, st->lpcSize, mem, stack); + + /* Compute target signal */ + for (i=0;i<st->subframeSize;i++) + target[i]=SUB16(sw[i],res[i]); + + signal_div(target, target, scale, st->subframeSize); + + /* Reset excitation */ + SPEEX_MEMSET(innov, 0, st->subframeSize); + + /*print_vec(target, st->subframeSize, "\ntarget");*/ + SUBMODE(innovation_quant)(target, st->interp_qlpc, bw_lpc1, bw_lpc2, + SUBMODE(innovation_params), st->lpcSize, st->subframeSize, + innov, syn_resp, bits, stack, st->complexity, SUBMODE(double_codebook)); + /*print_vec(target, st->subframeSize, "after");*/ + + signal_mul(innov, innov, scale, st->subframeSize); + + 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(2.5f,13), target[i]); + + SUBMODE(innovation_quant)(target, st->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_P15(QCONST16(0.4f,15),scale), 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] = PSHR32(innov[i],SIG_SHIFT); + + if (st->innov_rms_save) + { + st->innov_rms_save[sub] = MULT16_16_Q15(QCONST16(.70711f, 15), compute_rms(innov, st->subframeSize)); + } + st->exc_rms[sub] = compute_rms16(exc, st->subframeSize); + + + } + + + /*Keep the previous memory*/ + for (i=0;i<st->lpcSize;i++) + mem[i]=st->mem_sp[i]; + /* Final signal synthesis from excitation */ + iir_mem16(exc, st->interp_qlpc, sp, st->subframeSize, st->lpcSize, st->mem_sp, stack); + + /* Compute weighted signal again, from synthesized speech (not sure it's the right thing) */ + filter_mem16(sp, bw_lpc1, bw_lpc2, sw, st->subframeSize, st->lpcSize, st->mem_sw, stack); + } + + 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]; + + st->first=0; + + return 1; +} + + + + + +void *sb_decoder_init(const SpeexMode *m) +{ + spx_int32_t tmp; + SBDecState *st; + const SpeexSBMode *mode; + st = (SBDecState*)speex_alloc(sizeof(SBDecState)); + if (!st) + return NULL; + st->mode = m; + mode=(const SpeexSBMode*)m->mode; + st->encode_submode = 1; + + st->st_low = speex_decoder_init(mode->nb_mode); +#if defined(VAR_ARRAYS) || defined (USE_ALLOCA) + st->stack = NULL; +#else + /*st->stack = (char*)speex_alloc_scratch(SB_DEC_STACK);*/ + speex_decoder_ctl(st->st_low, SPEEX_GET_STACK, &st->stack); +#endif + + st->full_frame_size = 2*mode->frameSize; + st->frame_size = mode->frameSize; + st->subframeSize = mode->subframeSize; + st->nbSubframes = mode->frameSize/mode->subframeSize; + st->lpcSize=mode->lpcSize; + speex_decoder_ctl(st->st_low, SPEEX_GET_SAMPLING_RATE, &st->sampling_rate); + st->sampling_rate*=2; + tmp=1; + speex_decoder_ctl(st->st_low, SPEEX_SET_WIDEBAND, &tmp); + + st->submodes=mode->submodes; + st->submodeID=mode->defaultSubmode; + + st->first=1; + + st->g0_mem = (spx_word16_t*)speex_alloc((QMF_ORDER)*sizeof(spx_word16_t)); + st->g1_mem = (spx_word16_t*)speex_alloc((QMF_ORDER)*sizeof(spx_word16_t)); + + st->excBuf = (spx_word16_t*)speex_alloc((st->subframeSize)*sizeof(spx_word16_t)); + + st->old_qlsp = (spx_lsp_t*)speex_alloc((st->lpcSize)*sizeof(spx_lsp_t)); + st->interp_qlpc = (spx_coef_t*)speex_alloc(st->lpcSize*sizeof(spx_coef_t)); + + st->pi_gain = (spx_word32_t*)speex_alloc((st->nbSubframes)*sizeof(spx_word32_t)); + st->exc_rms = (spx_word16_t*)speex_alloc((st->nbSubframes)*sizeof(spx_word16_t)); + st->mem_sp = (spx_mem_t*)speex_alloc((2*st->lpcSize)*sizeof(spx_mem_t)); + + st->innov_save = NULL; + + + st->lpc_enh_enabled=0; + st->seed = 1000; + +#ifdef ENABLE_VALGRIND + VALGRIND_MAKE_READABLE(st, (st->stack-(char*)st)); +#endif + return st; +} + +void sb_decoder_destroy(void *state) +{ + SBDecState *st; + st = (SBDecState*)state; + speex_decoder_destroy(st->st_low); +#if !(defined(VAR_ARRAYS) || defined (USE_ALLOCA)) + /*speex_free_scratch(st->stack);*/ +#endif + + speex_free(st->g0_mem); + speex_free(st->g1_mem); + speex_free(st->excBuf); + speex_free(st->old_qlsp); + speex_free(st->interp_qlpc); + speex_free(st->pi_gain); + speex_free(st->exc_rms); + speex_free(st->mem_sp); + + speex_free(state); +} + +static void sb_decode_lost(SBDecState *st, spx_word16_t *out, int dtx, char *stack) +{ + int i; + int saved_modeid=0; + + if (dtx) + { + saved_modeid=st->submodeID; + st->submodeID=1; + } else { + bw_lpc(QCONST16(0.99f,15), st->interp_qlpc, st->interp_qlpc, st->lpcSize); + } + + st->first=1; + + + /* Final signal synthesis from excitation */ + if (!dtx) + { + st->last_ener = MULT16_16_Q15(QCONST16(.9f,15),st->last_ener); + } + for (i=0;i<st->frame_size;i++) + out[i+st->frame_size] = speex_rand(st->last_ener, &st->seed); + + iir_mem16(out+st->frame_size, st->interp_qlpc, out+st->frame_size, st->frame_size, st->lpcSize, + st->mem_sp, stack); + + + /* Reconstruct the original */ + qmf_synth(out, out+st->frame_size, h0, out, st->full_frame_size, QMF_ORDER, st->g0_mem, st->g1_mem, stack); + if (dtx) + { + st->submodeID=saved_modeid; + } + + return; +} + +int sb_decode(void *state, SpeexBits *bits, void *vout) +{ + int i, sub; + SBDecState *st; + int wideband; + int ret; + char *stack; + VARDECL(spx_word32_t *low_pi_gain); + VARDECL(spx_word16_t *low_exc_rms); + VARDECL(spx_coef_t *ak); + VARDECL(spx_lsp_t *qlsp); + VARDECL(spx_lsp_t *interp_qlsp); + spx_int32_t dtx; + const SpeexSBMode *mode; + spx_word16_t *out = (spx_word16_t*)vout; + spx_word16_t *low_innov_alias; + spx_word32_t exc_ener_sum = 0; + + st = (SBDecState*)state; + stack=st->stack; + mode = (const SpeexSBMode*)(st->mode->mode); + + low_innov_alias = out+st->frame_size; + speex_decoder_ctl(st->st_low, SPEEX_SET_INNOVATION_SAVE, low_innov_alias); + /* Decode the low-band */ + ret = speex_decode_native(st->st_low, bits, out); + + speex_decoder_ctl(st->st_low, SPEEX_GET_DTX_STATUS, &dtx); + + /* If error decoding the narrowband part, propagate error */ + if (ret!=0) + { + return ret; + } + + if (!bits) + { + sb_decode_lost(st, out, dtx, stack); + return 0; + } + + if (st->encode_submode) + { + + /*Check "wideband bit"*/ + if (speex_bits_remaining(bits)>0) + wideband = speex_bits_peek(bits); + else + wideband = 0; + if (wideband) + { + /*Regular wideband frame, read the submode*/ + wideband = speex_bits_unpack_unsigned(bits, 1); + st->submodeID = speex_bits_unpack_unsigned(bits, SB_SUBMODE_BITS); + } else + { + /*Was a narrowband frame, set "null submode"*/ + st->submodeID = 0; + } + if (st->submodeID != 0 && st->submodes[st->submodeID] == NULL) + { + speex_notify("Invalid mode encountered. The stream is corrupted."); + return -2; + } + } + + /* If null mode (no transmission), just set a couple things to zero*/ + if (st->submodes[st->submodeID] == NULL) + { + if (dtx) + { + sb_decode_lost(st, out, 1, stack); + return 0; + } + + for (i=0;i<st->frame_size;i++) + out[st->frame_size+i]=VERY_SMALL; + + st->first=1; + + /* Final signal synthesis from excitation */ + iir_mem16(out+st->frame_size, st->interp_qlpc, out+st->frame_size, st->frame_size, st->lpcSize, st->mem_sp, stack); + + qmf_synth(out, out+st->frame_size, h0, out, st->full_frame_size, QMF_ORDER, st->g0_mem, st->g1_mem, stack); + + return 0; + + } + + ALLOC(low_pi_gain, st->nbSubframes, spx_word32_t); + ALLOC(low_exc_rms, st->nbSubframes, spx_word16_t); + speex_decoder_ctl(st->st_low, SPEEX_GET_PI_GAIN, low_pi_gain); + speex_decoder_ctl(st->st_low, SPEEX_GET_EXC, low_exc_rms); + + ALLOC(qlsp, st->lpcSize, spx_lsp_t); + ALLOC(interp_qlsp, st->lpcSize, spx_lsp_t); + SUBMODE(lsp_unquant)(qlsp, st->lpcSize, bits); + + if (st->first) + { + for (i=0;i<st->lpcSize;i++) + st->old_qlsp[i] = qlsp[i]; + } + + ALLOC(ak, st->lpcSize, spx_coef_t); + + for (sub=0;sub<st->nbSubframes;sub++) + { + VARDECL(spx_word32_t *exc); + spx_word16_t *innov_save=NULL; + spx_word16_t *sp; + spx_word16_t filter_ratio; + spx_word16_t el=0; + int offset; + spx_word32_t rl=0,rh=0; + + offset = st->subframeSize*sub; + sp=out+st->frame_size+offset; + ALLOC(exc, st->subframeSize, spx_word32_t); + /* Pointer for saving innovation */ + if (st->innov_save) + { + innov_save = st->innov_save+2*offset; + SPEEX_MEMSET(innov_save, 0, 2*st->subframeSize); + } + + /* LSP interpolation */ + lsp_interpolate(st->old_qlsp, qlsp, interp_qlsp, st->lpcSize, sub, st->nbSubframes); + + lsp_enforce_margin(interp_qlsp, st->lpcSize, LSP_MARGIN); + + /* LSP to LPC */ + lsp_to_lpc(interp_qlsp, ak, st->lpcSize, stack); + + /* Calculate reponse ratio between the low and high filter in the middle + of the band (4000 Hz) */ + + st->pi_gain[sub]=LPC_SCALING; + rh = LPC_SCALING; + for (i=0;i<st->lpcSize;i+=2) + { + rh += ak[i+1] - ak[i]; + st->pi_gain[sub] += ak[i] + ak[i+1]; + } + + rl = low_pi_gain[sub]; +#ifdef FIXED_POINT + filter_ratio=EXTRACT16(SATURATE(PDIV32(SHL32(ADD32(rl,82),7),ADD32(82,rh)),32767)); +#else + filter_ratio=(rl+.01)/(rh+.01); +#endif + + SPEEX_MEMSET(exc, 0, st->subframeSize); + if (!SUBMODE(innovation_unquant)) + { + spx_word32_t g; + int quant; + + quant = speex_bits_unpack_unsigned(bits, 5); + g= spx_exp(MULT16_16(QCONST16(.125f,11),(quant-10))); + + g = PDIV32(g, filter_ratio); + + for (i=0;i<st->subframeSize;i+=2) + { + exc[i]=SHL32(MULT16_32_P15(MULT16_16_Q15(mode->folding_gain,low_innov_alias[offset+i]),SHL32(g,6)),SIG_SHIFT); + exc[i+1]=NEG32(SHL32(MULT16_32_P15(MULT16_16_Q15(mode->folding_gain,low_innov_alias[offset+i+1]),SHL32(g,6)),SIG_SHIFT)); + } + + } else { + spx_word16_t gc; + spx_word32_t scale; + int qgc = speex_bits_unpack_unsigned(bits, 4); + + el = low_exc_rms[sub]; + gc = MULT16_16_Q15(QCONST16(0.87360,15),gc_quant_bound[qgc]); + + if (st->subframeSize==80) + gc = MULT16_16_P14(QCONST16(1.4142f,14),gc); + + scale = SHL32(PDIV32(SHL32(MULT16_16(gc, el),3), filter_ratio),SIG_SHIFT-3); + SUBMODE(innovation_unquant)(exc, SUBMODE(innovation_params), st->subframeSize, + bits, stack, &st->seed); + + signal_mul(exc,exc,scale,st->subframeSize); + + 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_P15(QCONST16(0.4f,15),scale), st->subframeSize); + for (i=0;i<st->subframeSize;i++) + exc[i] = ADD32(exc[i],innov2[i]); + stack = tmp_stack; + } + + } + + if (st->innov_save) + { + for (i=0;i<st->subframeSize;i++) + innov_save[2*i]=EXTRACT16(PSHR32(exc[i],SIG_SHIFT)); + } + + iir_mem16(st->excBuf, st->interp_qlpc, sp, st->subframeSize, st->lpcSize, + st->mem_sp, stack); + for (i=0;i<st->subframeSize;i++) + st->excBuf[i]=EXTRACT16(PSHR32(exc[i],SIG_SHIFT)); + for (i=0;i<st->lpcSize;i++) + st->interp_qlpc[i] = ak[i]; + st->exc_rms[sub] = compute_rms16(st->excBuf, st->subframeSize); + exc_ener_sum = ADD32(exc_ener_sum, DIV32(MULT16_16(st->exc_rms[sub],st->exc_rms[sub]), st->nbSubframes)); + } + st->last_ener = spx_sqrt(exc_ener_sum); + + qmf_synth(out, out+st->frame_size, h0, out, st->full_frame_size, QMF_ORDER, st->g0_mem, st->g1_mem, stack); + for (i=0;i<st->lpcSize;i++) + st->old_qlsp[i] = qlsp[i]; + + st->first=0; + + return 0; +} + + +int sb_encoder_ctl(void *state, int request, void *ptr) +{ + SBEncState *st; + st=(SBEncState*)state; + switch(request) + { + case SPEEX_GET_FRAME_SIZE: + (*(spx_int32_t*)ptr) = st->full_frame_size; + break; + case SPEEX_SET_HIGH_MODE: + st->submodeSelect = st->submodeID = (*(spx_int32_t*)ptr); + break; + case SPEEX_SET_LOW_MODE: + speex_encoder_ctl(st->st_low, SPEEX_SET_LOW_MODE, ptr); + break; + case SPEEX_SET_DTX: + speex_encoder_ctl(st->st_low, SPEEX_SET_DTX, ptr); + break; + case SPEEX_GET_DTX: + speex_encoder_ctl(st->st_low, SPEEX_GET_DTX, ptr); + break; + case SPEEX_GET_LOW_MODE: + speex_encoder_ctl(st->st_low, SPEEX_GET_LOW_MODE, ptr); + break; + case SPEEX_SET_MODE: + speex_encoder_ctl(st, SPEEX_SET_QUALITY, ptr); + break; +#ifndef DISABLE_VBR + case SPEEX_SET_VBR: + st->vbr_enabled = (*(spx_int32_t*)ptr); + speex_encoder_ctl(st->st_low, SPEEX_SET_VBR, 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); + speex_encoder_ctl(st->st_low, SPEEX_SET_VAD, ptr); + break; + case SPEEX_GET_VAD: + (*(spx_int32_t*)ptr) = st->vad_enabled; + break; +#endif /* #ifndef DISABLE_VBR */ +#if !defined(DISABLE_VBR) && !defined(DISABLE_FLOAT_API) + case SPEEX_SET_VBR_QUALITY: + { + spx_int32_t q; + float qual = (*(float*)ptr)+.6; + st->vbr_quality = (*(float*)ptr); + if (qual>10) + qual=10; + q=(int)floor(.5+*(float*)ptr); + if (q>10) + q=10; + speex_encoder_ctl(st->st_low, SPEEX_SET_VBR_QUALITY, &qual); + speex_encoder_ctl(state, SPEEX_SET_QUALITY, &q); + break; + } + case SPEEX_GET_VBR_QUALITY: + (*(float*)ptr) = st->vbr_quality; + break; +#endif /* #if !defined(DISABLE_VBR) && !defined(DISABLE_FLOAT_API) */ +#ifndef DISABLE_VBR + case SPEEX_SET_ABR: + st->abr_enabled = (*(spx_int32_t*)ptr); + st->vbr_enabled = st->abr_enabled!=0; + speex_encoder_ctl(st->st_low, SPEEX_SET_VBR, &st->vbr_enabled); + if (st->vbr_enabled) + { + spx_int32_t i=10, 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 */ + + case SPEEX_SET_QUALITY: + { + spx_int32_t nb_qual; + int quality = (*(spx_int32_t*)ptr); + if (quality < 0) + quality = 0; + if (quality > 10) + quality = 10; + st->submodeSelect = st->submodeID = ((const SpeexSBMode*)(st->mode->mode))->quality_map[quality]; + nb_qual = ((const SpeexSBMode*)(st->mode->mode))->low_quality_map[quality]; + speex_encoder_ctl(st->st_low, SPEEX_SET_MODE, &nb_qual); + } + break; + case SPEEX_SET_COMPLEXITY: + speex_encoder_ctl(st->st_low, SPEEX_SET_COMPLEXITY, ptr); + st->complexity = (*(spx_int32_t*)ptr); + if (st->complexity<1) + st->complexity=1; + 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: + speex_encoder_ctl(st->st_low, request, ptr); + /*fprintf (stderr, "before: %d\n", (*(int*)ptr));*/ + if (st->submodes[st->submodeID]) + (*(spx_int32_t*)ptr) += st->sampling_rate*SUBMODE(bits_per_frame)/st->full_frame_size; + else + (*(spx_int32_t*)ptr) += st->sampling_rate*(SB_SUBMODE_BITS+1)/st->full_frame_size; + /*fprintf (stderr, "after: %d\n", (*(int*)ptr));*/ + break; + case SPEEX_SET_SAMPLING_RATE: + { + spx_int32_t tmp=(*(spx_int32_t*)ptr); + st->sampling_rate = tmp; + tmp>>=1; + speex_encoder_ctl(st->st_low, SPEEX_SET_SAMPLING_RATE, &tmp); + } + break; + case SPEEX_GET_SAMPLING_RATE: + (*(spx_int32_t*)ptr)=st->sampling_rate; + break; + case SPEEX_RESET_STATE: + { + int i; + 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_sp[i]=st->mem_sp2[i]=0; + for (i=0;i<QMF_ORDER;i++) + st->h0_mem[i]=st->h1_mem[i]=0; + } + break; + case SPEEX_SET_SUBMODE_ENCODING: + st->encode_submode = (*(spx_int32_t*)ptr); + speex_encoder_ctl(st->st_low, SPEEX_SET_SUBMODE_ENCODING, ptr); + break; + case SPEEX_GET_SUBMODE_ENCODING: + (*(spx_int32_t*)ptr) = st->encode_submode; + break; + case SPEEX_GET_LOOKAHEAD: + speex_encoder_ctl(st->st_low, SPEEX_GET_LOOKAHEAD, ptr); + (*(spx_int32_t*)ptr) = 2*(*(spx_int32_t*)ptr) + QMF_ORDER - 1; + break; + case SPEEX_SET_PLC_TUNING: + speex_encoder_ctl(st->st_low, SPEEX_SET_PLC_TUNING, ptr); + break; + case SPEEX_GET_PLC_TUNING: + speex_encoder_ctl(st->st_low, SPEEX_GET_PLC_TUNING, ptr); + break; +#ifndef DISABLE_VBR + case SPEEX_SET_VBR_MAX_BITRATE: + { + st->vbr_max = (*(spx_int32_t*)ptr); + if (SPEEX_SET_VBR_MAX_BITRATE<1) + { + speex_encoder_ctl(st->st_low, SPEEX_SET_VBR_MAX_BITRATE, &st->vbr_max); + st->vbr_max_high = 17600; + } else { + spx_int32_t low_rate; + if (st->vbr_max >= 42200) + { + st->vbr_max_high = 17600; + } else if (st->vbr_max >= 27800) + { + st->vbr_max_high = 9600; + } else if (st->vbr_max > 20600) + { + st->vbr_max_high = 5600; + } else { + st->vbr_max_high = 1800; + } + if (st->subframeSize==80) + st->vbr_max_high = 1800; + low_rate = st->vbr_max - st->vbr_max_high; + speex_encoder_ctl(st->st_low, SPEEX_SET_VBR_MAX_BITRATE, &low_rate); + } + } + break; + case SPEEX_GET_VBR_MAX_BITRATE: + (*(spx_int32_t*)ptr) = st->vbr_max; + break; +#endif /* #ifndef DISABLE_VBR */ + case SPEEX_SET_HIGHPASS: + speex_encoder_ctl(st->st_low, SPEEX_SET_HIGHPASS, ptr); + break; + case SPEEX_GET_HIGHPASS: + speex_encoder_ctl(st->st_low, SPEEX_GET_HIGHPASS, ptr); + 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] = st->exc_rms[i]; + } + 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: + speex_encoder_ctl(st->st_low, SPEEX_SET_WIDEBAND, ptr); + break; + case SPEEX_GET_STACK: + *((char**)ptr) = st->stack; + break; + default: + speex_warning_int("Unknown nb_ctl request: ", request); + return -1; + } + return 0; +} + +int sb_decoder_ctl(void *state, int request, void *ptr) +{ + SBDecState *st; + st=(SBDecState*)state; + switch(request) + { + case SPEEX_SET_HIGH_MODE: + st->submodeID = (*(spx_int32_t*)ptr); + break; + case SPEEX_SET_LOW_MODE: + speex_decoder_ctl(st->st_low, SPEEX_SET_LOW_MODE, ptr); + break; + case SPEEX_GET_LOW_MODE: + speex_decoder_ctl(st->st_low, SPEEX_GET_LOW_MODE, ptr); + break; + case SPEEX_GET_FRAME_SIZE: + (*(spx_int32_t*)ptr) = st->full_frame_size; + break; + case SPEEX_SET_ENH: + speex_decoder_ctl(st->st_low, request, ptr); + st->lpc_enh_enabled = *((spx_int32_t*)ptr); + break; + case SPEEX_GET_ENH: + *((spx_int32_t*)ptr) = st->lpc_enh_enabled; + break; + case SPEEX_SET_MODE: + case SPEEX_SET_QUALITY: + { + spx_int32_t nb_qual; + int quality = (*(spx_int32_t*)ptr); + if (quality < 0) + quality = 0; + if (quality > 10) + quality = 10; + st->submodeID = ((const SpeexSBMode*)(st->mode->mode))->quality_map[quality]; + nb_qual = ((const SpeexSBMode*)(st->mode->mode))->low_quality_map[quality]; + speex_decoder_ctl(st->st_low, SPEEX_SET_MODE, &nb_qual); + } + break; + case SPEEX_GET_BITRATE: + speex_decoder_ctl(st->st_low, request, ptr); + if (st->submodes[st->submodeID]) + (*(spx_int32_t*)ptr) += st->sampling_rate*SUBMODE(bits_per_frame)/st->full_frame_size; + else + (*(spx_int32_t*)ptr) += st->sampling_rate*(SB_SUBMODE_BITS+1)/st->full_frame_size; + break; + case SPEEX_SET_SAMPLING_RATE: + { + spx_int32_t tmp=(*(spx_int32_t*)ptr); + st->sampling_rate = tmp; + tmp>>=1; + speex_decoder_ctl(st->st_low, SPEEX_SET_SAMPLING_RATE, &tmp); + } + break; + case SPEEX_GET_SAMPLING_RATE: + (*(spx_int32_t*)ptr)=st->sampling_rate; + break; + case SPEEX_SET_HANDLER: + speex_decoder_ctl(st->st_low, SPEEX_SET_HANDLER, ptr); + break; + case SPEEX_SET_USER_HANDLER: + speex_decoder_ctl(st->st_low, SPEEX_SET_USER_HANDLER, ptr); + break; + case SPEEX_RESET_STATE: + { + int i; + for (i=0;i<2*st->lpcSize;i++) + st->mem_sp[i]=0; + for (i=0;i<QMF_ORDER;i++) + st->g0_mem[i]=st->g1_mem[i]=0; + st->last_ener=0; + } + break; + case SPEEX_SET_SUBMODE_ENCODING: + st->encode_submode = (*(spx_int32_t*)ptr); + speex_decoder_ctl(st->st_low, SPEEX_SET_SUBMODE_ENCODING, ptr); + break; + case SPEEX_GET_SUBMODE_ENCODING: + (*(spx_int32_t*)ptr) = st->encode_submode; + break; + case SPEEX_GET_LOOKAHEAD: + speex_decoder_ctl(st->st_low, SPEEX_GET_LOOKAHEAD, ptr); + (*(spx_int32_t*)ptr) = 2*(*(spx_int32_t*)ptr); + break; + case SPEEX_SET_HIGHPASS: + speex_decoder_ctl(st->st_low, SPEEX_SET_HIGHPASS, ptr); + break; + case SPEEX_GET_HIGHPASS: + speex_decoder_ctl(st->st_low, SPEEX_GET_HIGHPASS, ptr); + break; + case SPEEX_GET_ACTIVITY: + speex_decoder_ctl(st->st_low, SPEEX_GET_ACTIVITY, ptr); + 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; + for (i=0;i<st->nbSubframes;i++) + ((spx_word16_t*)ptr)[i] = st->exc_rms[i]; + } + break; + case SPEEX_GET_DTX_STATUS: + speex_decoder_ctl(st->st_low, SPEEX_GET_DTX_STATUS, ptr); + break; + case SPEEX_SET_INNOVATION_SAVE: + st->innov_save = (spx_word16_t*)ptr; + break; + case SPEEX_SET_WIDEBAND: + speex_decoder_ctl(st->st_low, SPEEX_SET_WIDEBAND, 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 + |