33 static int resolve_gain_offset(enum lc3_srate sr, int nbytes)  in resolve_gain_offset()  argument
35     int sr_ind = lc3_hr(sr) ? 4 + (sr - LC3_SRATE_48K_HR) : sr;  in resolve_gain_offset()
38     return LC3_MIN(sr >= LC3_SRATE_96K_HR ? 181 : 255,  in resolve_gain_offset()
83     enum lc3_dt dt, enum lc3_srate sr, const float *x,  in estimate_gain()  argument
87     int n4 = lc3_ne(dt, sr) / 4;  in estimate_gain()
95     if (lc3_hr(sr)) {  in estimate_gain()
100         }[dt][sr - LC3_SRATE_48K_HR];  in estimate_gain()
137     float nf = lc3_hr(sr) ?  in estimate_gain()
174     float x_lim = lc3_hr(sr) ? 0x7fffp8f : 0x7fffp0f;  in estimate_gain()
198     enum lc3_dt dt, enum lc3_srate sr,  in adjust_gain()  argument
207     }[sr];  in adjust_gain()
227     if (lc3_hr(sr) && nbits > nbits_budget) {  in adjust_gain()
235     if (!lc3_hr(sr) && nbits < nbits_budget - (delta + 2))  in adjust_gain()
238     if (!lc3_hr(sr) && nbits > nbits_budget)  in adjust_gain()
252     enum lc3_dt dt, enum lc3_srate sr, int g_int, float *x, int *n)  in quantize()  argument
255     int ne = lc3_ne(dt, sr);  in quantize()
260         float xq_min = lc3_hr(sr) ? 0.5f : 10.f/16;  in quantize()
278     enum lc3_dt dt, enum lc3_srate sr,  in unquantize()  argument
282     int i, ne = lc3_ne(dt, sr);  in unquantize()
304 static bool resolve_modes(enum lc3_srate sr, int nbytes, bool *p_lsb_mode)  in resolve_modes()  argument
306     int sr_ind = lc3_hr(sr) ? 4 + (sr - LC3_SRATE_48K_HR) : sr;  in resolve_modes()
309       *p_lsb_mode = (nbytes >= 20 * (3 + sr_ind)) && (sr < LC3_SRATE_96K_HR);  in resolve_modes()
311     return (nbytes > 20 * (1 + sr_ind)) && (sr < LC3_SRATE_96K_HR);  in resolve_modes()
324     enum lc3_dt dt, enum lc3_srate sr, int nbytes,  in compute_nbits()  argument
327     bool lsb_mode, high_rate = resolve_modes(sr, nbytes, &lsb_mode);  in compute_nbits()
328     int ne = lc3_ne(dt, sr);  in compute_nbits()
346             float xq_off = lc3_hr(sr) ? 0.5f : 6.f/16;  in compute_nbits()
420     enum lc3_dt dt, enum lc3_srate sr, int nbytes,  in put_quantized()  argument
423     bool high_rate = resolve_modes(sr, nbytes, NULL);  in put_quantized()
424     int ne = lc3_ne(dt, sr);  in put_quantized()
435             float xq_off = lc3_hr(sr) ? 0.5f : 6.f/16;  in put_quantized()
498     enum lc3_dt dt, enum lc3_srate sr, int nbytes,  in get_quantized()  argument
501     bool high_rate = resolve_modes(sr, nbytes, NULL);  in get_quantized()
502     int ne = lc3_ne(dt, sr);  in get_quantized()
516             int max_shl = lc3_hr(sr) ? 22 : 14;  in get_quantized()
800 static int get_nbits_nq(enum lc3_dt dt, enum lc3_srate sr)  in get_nbits_nq()  argument
802     int ne = lc3_ne(dt, sr);  in get_nbits_nq()
811 static int get_nbits_ac(enum lc3_dt dt, enum lc3_srate sr, int nbytes)  in get_nbits_ac()  argument
813     return get_nbits_nq(dt, sr) +  in get_nbits_ac()
814         3 + lc3_hr(sr) + LC3_MIN((nbytes-1) / 160, 2);  in get_nbits_ac()
821     enum lc3_dt dt, enum lc3_srate sr, int nbytes,  in lc3_spec_analyze()  argument
833     int nbits_budget = 8*nbytes - get_nbits_ac(dt, sr, nbytes) -  in lc3_spec_analyze()
834         lc3_bwdet_get_nbits(sr) - lc3_ltpf_get_nbits(pitch) -  in lc3_spec_analyze()
843     int g_off = resolve_gain_offset(sr, nbytes);  in lc3_spec_analyze()
845     int g_min, g_int = estimate_gain(dt, sr,  in lc3_spec_analyze()
850     quantize(dt, sr, g_int, x, &side->nq);  in lc3_spec_analyze()
852     int nbits = compute_nbits(dt, sr, nbytes, x, &side->nq, 0, NULL);  in lc3_spec_analyze()
859     int g_adj = adjust_gain(dt, sr,  in lc3_spec_analyze()
863         quantize(dt, sr, g_adj, x, &side->nq);  in lc3_spec_analyze()
866     nbits = compute_nbits(dt, sr, nbytes,  in lc3_spec_analyze()
874     enum lc3_dt dt, enum lc3_srate sr,  in lc3_spec_put_side()  argument
877     int nbits_nq = get_nbits_nq(dt, sr);  in lc3_spec_put_side()
888     enum lc3_dt dt, enum lc3_srate sr, enum lc3_bandwidth bw,  in lc3_spec_encode()  argument
894     put_noise_factor(bits, estimate_noise(dt, bw, lc3_hr(sr), x, nq));  in lc3_spec_encode()
896     put_quantized(bits, dt, sr, nbytes, x, nq, lsb_mode);  in lc3_spec_encode()
901         put_lsb(bits, nbits_left, lc3_hr(sr), x, nq);  in lc3_spec_encode()
903         put_residual(bits, nbits_left, lc3_hr(sr), x, nq);  in lc3_spec_encode()
915     enum lc3_dt dt, enum lc3_srate sr, struct lc3_spec_side *side)  in lc3_spec_get_side()  argument
917     int nbits_nq = get_nbits_nq(dt, sr);  in lc3_spec_get_side()
918     int ne = lc3_ne(dt, sr);  in lc3_spec_get_side()
931     enum lc3_dt dt, enum lc3_srate sr, enum lc3_bandwidth bw,  in lc3_spec_decode()  argument
941     if ((ret = get_quantized(bits, dt, sr, nbytes,  in lc3_spec_decode()
950         get_residual(bits, nbits_left, lc3_hr(sr), x, nq);  in lc3_spec_decode()
952     int g_int = side->g_idx - resolve_gain_offset(sr, nbytes);  in lc3_spec_decode()
953     float g = unquantize(dt, sr, g_int, x, nq);  in lc3_spec_decode()