diff options
Diffstat (limited to 'libspeex/sb_celp.c')
| -rw-r--r-- | libspeex/sb_celp.c | 118 |
1 files changed, 59 insertions, 59 deletions
diff --git a/libspeex/sb_celp.c b/libspeex/sb_celp.c index 389309b..3aab085 100644 --- a/libspeex/sb_celp.c +++ b/libspeex/sb_celp.c @@ -1,21 +1,21 @@ -/* Copyright (C) 2002-2006 Jean-Marc Valin +/* 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 @@ -83,7 +83,7 @@ static const spx_word16_t fold_quant_bound[32] = { #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, + 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, @@ -176,7 +176,7 @@ void *sb_encoder_init(const SpeexMode *m) 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; @@ -201,7 +201,7 @@ void *sb_encoder_init(const SpeexMode *m) 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)); @@ -251,7 +251,7 @@ void sb_encoder_destroy(void *state) speex_free(st->mem_sp2); speex_free(st->mem_sw); - + speex_free(st); } @@ -322,7 +322,7 @@ int sb_encoder_ctl(void *state, int request, void *ptr) 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) + if (st->vbr_enabled) { spx_int32_t i=10, rate, target; float vbr_qual; @@ -343,7 +343,7 @@ int sb_encoder_ctl(void *state, int request, void *ptr) st->abr_drift=0; st->abr_drift2=0; } - + break; case SPEEX_GET_ABR: (*(spx_int32_t*)ptr) = st->abr_enabled; @@ -541,17 +541,17 @@ int sb_encode(void *state, void *vin, SpeexBits *bits) 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) { @@ -570,13 +570,13 @@ int sb_encode(void *state, void *vin, SpeexBits *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) @@ -588,12 +588,12 @@ int sb_encode(void *state, void *vin, SpeexBits *bits) 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); @@ -661,14 +661,14 @@ int sb_encode(void *state, void *vin, SpeexBits *bits) 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) + if (st->vbr_enabled) { spx_int32_t modeid; modeid = mode->nb_modes-1; @@ -683,7 +683,7 @@ int sb_encode(void *state, void *vin, SpeexBits *bits) if (v1==10) thresh = mode->vbr_thresh[modeid][v1]; else - thresh = (st->vbr_quality-v1) * mode->vbr_thresh[modeid][v1+1] + + 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; @@ -744,7 +744,7 @@ int sb_encode(void *state, void *vin, SpeexBits *bits) /* LSP quantization */ - SUBMODE(lsp_quant)(lsp, qlsp, st->lpcSize, bits); + SUBMODE(lsp_quant)(lsp, qlsp, st->lpcSize, bits); if (st->first) { @@ -753,7 +753,7 @@ int sb_encode(void *state, void *vin, SpeexBits *bits) 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); @@ -775,7 +775,7 @@ int sb_encode(void *state, void *vin, SpeexBits *bits) 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_MARGIN); lsp_interpolate(st->old_qlsp, qlsp, interp_qlsp, st->lpcSize, sub, st->nbSubframes, LSP_MARGIN); @@ -795,14 +795,14 @@ int sb_encode(void *state, void *vin, SpeexBits *bits) 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 */ @@ -816,7 +816,7 @@ int sb_encode(void *state, void *vin, SpeexBits *bits) /* 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; @@ -873,11 +873,11 @@ int sb_encode(void *state, void *vin, SpeexBits *bits) 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]; @@ -902,8 +902,8 @@ int sb_encode(void *state, void *vin, SpeexBits *bits) 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, + 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");*/ @@ -917,8 +917,8 @@ int sb_encode(void *state, void *vin, SpeexBits *bits) 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, + 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); @@ -934,17 +934,17 @@ int sb_encode(void *state, void *vin, SpeexBits *bits) 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); } @@ -1009,7 +1009,7 @@ void *sb_decoder_init(const SpeexMode *m) 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; @@ -1187,8 +1187,8 @@ static void sb_decode_lost(SBDecState *st, spx_word16_t *out, int dtx, char *sta } st->first=1; - - + + /* Final signal synthesis from excitation */ if (!dtx) { @@ -1197,10 +1197,10 @@ static void sb_decode_lost(SBDecState *st, spx_word16_t *out, int dtx, char *sta 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, + 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) @@ -1228,7 +1228,7 @@ int sb_decode(void *state, SpeexBits *bits, void *vout) 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); @@ -1308,13 +1308,13 @@ int sb_decode(void *state, SpeexBits *bits, void *vout) 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++) @@ -1326,7 +1326,7 @@ int sb_decode(void *state, SpeexBits *bits, void *vout) 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); @@ -1336,7 +1336,7 @@ int sb_decode(void *state, SpeexBits *bits, void *vout) 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_MARGIN); @@ -1345,7 +1345,7 @@ int sb_decode(void *state, SpeexBits *bits, void *vout) /* 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) @@ -1360,7 +1360,7 @@ int sb_decode(void *state, SpeexBits *bits, void *vout) #else filter_ratio=(rl+.01)/(rh+.01); #endif - + SPEEX_MEMSET(exc, 0, st->subframeSize); if (!SUBMODE(innovation_unquant)) { @@ -1369,20 +1369,20 @@ int sb_decode(void *state, SpeexBits *bits, void *vout) 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]); @@ -1390,7 +1390,7 @@ int sb_decode(void *state, SpeexBits *bits, void *vout) 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, + SUBMODE(innovation_unquant)(exc, SUBMODE(innovation_params), st->subframeSize, bits, stack, &st->seed); signal_mul(exc,exc,scale,st->subframeSize); @@ -1400,7 +1400,7 @@ int sb_decode(void *state, SpeexBits *bits, void *vout) 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, + 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++) @@ -1409,14 +1409,14 @@ int sb_decode(void *state, SpeexBits *bits, void *vout) } } - + 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, + + 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)); @@ -1426,7 +1426,7 @@ int sb_decode(void *state, SpeexBits *bits, void *vout) 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]; |