blob: 84a5f61421e1ac3aefa4a5cc1d2a71405cd15916
1 | /* |
2 | ** FAAD2 - Freeware Advanced Audio (AAC) Decoder including SBR decoding |
3 | ** Copyright (C) 2003-2005 M. Bakker, Nero AG, http://www.nero.com |
4 | ** |
5 | ** This program is free software; you can redistribute it and/or modify |
6 | ** it under the terms of the GNU General Public License as published by |
7 | ** the Free Software Foundation; either version 2 of the License, or |
8 | ** (at your option) any later version. |
9 | ** |
10 | ** This program is distributed in the hope that it will be useful, |
11 | ** but WITHOUT ANY WARRANTY; without even the implied warranty of |
12 | ** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
13 | ** GNU General Public License for more details. |
14 | ** |
15 | ** You should have received a copy of the GNU General Public License |
16 | ** along with this program; if not, write to the Free Software |
17 | ** Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
18 | ** |
19 | ** Any non-GPL usage of this software or parts of this software is strictly |
20 | ** forbidden. |
21 | ** |
22 | ** The "appropriate copyright message" mentioned in section 2c of the GPLv2 |
23 | ** must read: "Code from FAAD2 is copyright (c) Nero AG, www.nero.com" |
24 | ** |
25 | ** Commercial non-GPL licensing of this software is possible. |
26 | ** For more info contact Nero AG through Mpeg4AAClicense@nero.com. |
27 | ** |
28 | ** $Id: sbr_e_nf.c,v 1.22 2008/03/23 23:03:29 menno Exp $ |
29 | **/ |
30 | #include <stdlib.h> |
31 | #include "common.h" |
32 | #include "structs.h" |
33 | |
34 | #ifdef SBR_DEC |
35 | |
36 | |
37 | #include "sbr_syntax.h" |
38 | #include "sbr_e_nf.h" |
39 | |
40 | void extract_envelope_data(sbr_info *sbr, uint8_t ch) |
41 | { |
42 | uint8_t l, k; |
43 | |
44 | for (l = 0; l < sbr->L_E[ch]; l++) { |
45 | if (sbr->bs_df_env[ch][l] == 0) { |
46 | for (k = 1; k < sbr->n[sbr->f[ch][l]]; k++) { |
47 | sbr->E[ch][k][l] = sbr->E[ch][k - 1][l] + sbr->E[ch][k][l]; |
48 | if (sbr->E[ch][k][l] < 0) { |
49 | sbr->E[ch][k][l] = 0; |
50 | } |
51 | } |
52 | |
53 | } else { /* bs_df_env == 1 */ |
54 | |
55 | uint8_t g = (l == 0) ? sbr->f_prev[ch] : sbr->f[ch][l - 1]; |
56 | int16_t E_prev; |
57 | |
58 | if (sbr->f[ch][l] == g) { |
59 | for (k = 0; k < sbr->n[sbr->f[ch][l]]; k++) { |
60 | if (l == 0) { |
61 | E_prev = sbr->E_prev[ch][k]; |
62 | } else { |
63 | E_prev = sbr->E[ch][k][l - 1]; |
64 | } |
65 | |
66 | sbr->E[ch][k][l] = E_prev + sbr->E[ch][k][l]; |
67 | } |
68 | |
69 | } else if ((g == 1) && (sbr->f[ch][l] == 0)) { |
70 | uint8_t i; |
71 | |
72 | for (k = 0; k < sbr->n[sbr->f[ch][l]]; k++) { |
73 | for (i = 0; i < sbr->N_high; i++) { |
74 | if (sbr->f_table_res[HI_RES][i] == sbr->f_table_res[LO_RES][k]) { |
75 | if (l == 0) { |
76 | E_prev = sbr->E_prev[ch][i]; |
77 | } else { |
78 | E_prev = sbr->E[ch][i][l - 1]; |
79 | } |
80 | |
81 | sbr->E[ch][k][l] = E_prev + sbr->E[ch][k][l]; |
82 | } |
83 | } |
84 | } |
85 | |
86 | } else if ((g == 0) && (sbr->f[ch][l] == 1)) { |
87 | uint8_t i; |
88 | |
89 | for (k = 0; k < sbr->n[sbr->f[ch][l]]; k++) { |
90 | for (i = 0; i < sbr->N_low; i++) { |
91 | if ((sbr->f_table_res[LO_RES][i] <= sbr->f_table_res[HI_RES][k]) && |
92 | (sbr->f_table_res[HI_RES][k] < sbr->f_table_res[LO_RES][i + 1])) { |
93 | if (l == 0) { |
94 | E_prev = sbr->E_prev[ch][i]; |
95 | } else { |
96 | E_prev = sbr->E[ch][i][l - 1]; |
97 | } |
98 | |
99 | sbr->E[ch][k][l] = E_prev + sbr->E[ch][k][l]; |
100 | } |
101 | } |
102 | } |
103 | } |
104 | } |
105 | } |
106 | } |
107 | |
108 | void extract_noise_floor_data(sbr_info *sbr, uint8_t ch) |
109 | { |
110 | uint8_t l, k; |
111 | |
112 | for (l = 0; l < sbr->L_Q[ch]; l++) { |
113 | if (sbr->bs_df_noise[ch][l] == 0) { |
114 | for (k = 1; k < sbr->N_Q; k++) { |
115 | sbr->Q[ch][k][l] = sbr->Q[ch][k][l] + sbr->Q[ch][k - 1][l]; |
116 | } |
117 | } else { |
118 | if (l == 0) { |
119 | for (k = 0; k < sbr->N_Q; k++) { |
120 | sbr->Q[ch][k][l] = sbr->Q_prev[ch][k] + sbr->Q[ch][k][0]; |
121 | } |
122 | } else { |
123 | for (k = 0; k < sbr->N_Q; k++) { |
124 | sbr->Q[ch][k][l] = sbr->Q[ch][k][l - 1] + sbr->Q[ch][k][l]; |
125 | } |
126 | } |
127 | } |
128 | } |
129 | } |
130 | |
131 | #ifndef FIXED_POINT |
132 | |
133 | /* table for Q_div values when no coupling */ |
134 | static const real_t Q_div_tab[31] = { |
135 | FRAC_CONST(0.0153846), FRAC_CONST(0.030303), |
136 | FRAC_CONST(0.0588235), FRAC_CONST(0.111111), |
137 | FRAC_CONST(0.2), FRAC_CONST(0.333333), |
138 | FRAC_CONST(0.5), FRAC_CONST(0.666667), |
139 | FRAC_CONST(0.8), FRAC_CONST(0.888889), |
140 | FRAC_CONST(0.941176), FRAC_CONST(0.969697), |
141 | FRAC_CONST(0.984615), FRAC_CONST(0.992248), |
142 | FRAC_CONST(0.996109), FRAC_CONST(0.998051), |
143 | FRAC_CONST(0.999024), FRAC_CONST(0.999512), |
144 | FRAC_CONST(0.999756), FRAC_CONST(0.999878), |
145 | FRAC_CONST(0.999939), FRAC_CONST(0.999969), |
146 | FRAC_CONST(0.999985), FRAC_CONST(0.999992), |
147 | FRAC_CONST(0.999996), FRAC_CONST(0.999998), |
148 | FRAC_CONST(0.999999), FRAC_CONST(1), |
149 | FRAC_CONST(1), FRAC_CONST(1), |
150 | FRAC_CONST(1) |
151 | }; |
152 | |
153 | static const real_t Q_div_tab_left[31][13] = { |
154 | { FRAC_CONST(0.969704), FRAC_CONST(0.888985), FRAC_CONST(0.667532), FRAC_CONST(0.336788), FRAC_CONST(0.117241), FRAC_CONST(0.037594), FRAC_CONST(0.0153846), FRAC_CONST(0.00967118), FRAC_CONST(0.00823245), FRAC_CONST(0.00787211), FRAC_CONST(0.00778198), FRAC_CONST(0.00775945), FRAC_CONST(0.00775382) }, |
155 | { FRAC_CONST(0.984619), FRAC_CONST(0.94123), FRAC_CONST(0.800623), FRAC_CONST(0.503876), FRAC_CONST(0.209877), FRAC_CONST(0.0724638), FRAC_CONST(0.030303), FRAC_CONST(0.0191571), FRAC_CONST(0.0163305), FRAC_CONST(0.0156212), FRAC_CONST(0.0154438), FRAC_CONST(0.0153994), FRAC_CONST(0.0153883) }, |
156 | { FRAC_CONST(0.99225), FRAC_CONST(0.969726), FRAC_CONST(0.889273), FRAC_CONST(0.670103), FRAC_CONST(0.346939), FRAC_CONST(0.135135), FRAC_CONST(0.0588235), FRAC_CONST(0.037594), FRAC_CONST(0.0321361), FRAC_CONST(0.0307619), FRAC_CONST(0.0304178), FRAC_CONST(0.0303317), FRAC_CONST(0.0303102) }, |
157 | { FRAC_CONST(0.99611), FRAC_CONST(0.98463), FRAC_CONST(0.941392), FRAC_CONST(0.802469), FRAC_CONST(0.515152), FRAC_CONST(0.238095), FRAC_CONST(0.111111), FRAC_CONST(0.0724638), FRAC_CONST(0.0622711), FRAC_CONST(0.0596878), FRAC_CONST(0.0590397), FRAC_CONST(0.0588776), FRAC_CONST(0.058837) }, |
158 | { FRAC_CONST(0.998051), FRAC_CONST(0.992256), FRAC_CONST(0.969811), FRAC_CONST(0.890411), FRAC_CONST(0.68), FRAC_CONST(0.384615), FRAC_CONST(0.2), FRAC_CONST(0.135135), FRAC_CONST(0.117241), FRAC_CONST(0.112652), FRAC_CONST(0.111497), FRAC_CONST(0.111208), FRAC_CONST(0.111135) }, |
159 | { FRAC_CONST(0.999025), FRAC_CONST(0.996113), FRAC_CONST(0.984674), FRAC_CONST(0.942029), FRAC_CONST(0.809524), FRAC_CONST(0.555556), FRAC_CONST(0.333333), FRAC_CONST(0.238095), FRAC_CONST(0.209877), FRAC_CONST(0.202492), FRAC_CONST(0.200625), FRAC_CONST(0.200156), FRAC_CONST(0.200039) }, |
160 | { FRAC_CONST(0.999512), FRAC_CONST(0.998053), FRAC_CONST(0.992278), FRAC_CONST(0.970149), FRAC_CONST(0.894737), FRAC_CONST(0.714286), FRAC_CONST(0.5), FRAC_CONST(0.384615), FRAC_CONST(0.346939), FRAC_CONST(0.336788), FRAC_CONST(0.3342), FRAC_CONST(0.33355), FRAC_CONST(0.333388) }, |
161 | { FRAC_CONST(0.999756), FRAC_CONST(0.999025), FRAC_CONST(0.996124), FRAC_CONST(0.984848), FRAC_CONST(0.944444), FRAC_CONST(0.833333), FRAC_CONST(0.666667), FRAC_CONST(0.555556), FRAC_CONST(0.515152), FRAC_CONST(0.503876), FRAC_CONST(0.500975), FRAC_CONST(0.500244), FRAC_CONST(0.500061) }, |
162 | { FRAC_CONST(0.999878), FRAC_CONST(0.999512), FRAC_CONST(0.998058), FRAC_CONST(0.992366), FRAC_CONST(0.971429), FRAC_CONST(0.909091), FRAC_CONST(0.8), FRAC_CONST(0.714286), FRAC_CONST(0.68), FRAC_CONST(0.670103), FRAC_CONST(0.667532), FRAC_CONST(0.666884), FRAC_CONST(0.666721) }, |
163 | { FRAC_CONST(0.999939), FRAC_CONST(0.999756), FRAC_CONST(0.999028), FRAC_CONST(0.996169), FRAC_CONST(0.985507), FRAC_CONST(0.952381), FRAC_CONST(0.888889), FRAC_CONST(0.833333), FRAC_CONST(0.809524), FRAC_CONST(0.802469), FRAC_CONST(0.800623), FRAC_CONST(0.800156), FRAC_CONST(0.800039) }, |
164 | { FRAC_CONST(0.999969), FRAC_CONST(0.999878), FRAC_CONST(0.999514), FRAC_CONST(0.998081), FRAC_CONST(0.992701), FRAC_CONST(0.97561), FRAC_CONST(0.941176), FRAC_CONST(0.909091), FRAC_CONST(0.894737), FRAC_CONST(0.890411), FRAC_CONST(0.889273), FRAC_CONST(0.888985), FRAC_CONST(0.888913) }, |
165 | { FRAC_CONST(0.999985), FRAC_CONST(0.999939), FRAC_CONST(0.999757), FRAC_CONST(0.999039), FRAC_CONST(0.996337), FRAC_CONST(0.987654), FRAC_CONST(0.969697), FRAC_CONST(0.952381), FRAC_CONST(0.944444), FRAC_CONST(0.942029), FRAC_CONST(0.941392), FRAC_CONST(0.94123), FRAC_CONST(0.94119) }, |
166 | { FRAC_CONST(0.999992), FRAC_CONST(0.99997), FRAC_CONST(0.999878), FRAC_CONST(0.999519), FRAC_CONST(0.998165), FRAC_CONST(0.993789), FRAC_CONST(0.984615), FRAC_CONST(0.97561), FRAC_CONST(0.971429), FRAC_CONST(0.970149), FRAC_CONST(0.969811), FRAC_CONST(0.969726), FRAC_CONST(0.969704) }, |
167 | { FRAC_CONST(0.999996), FRAC_CONST(0.999985), FRAC_CONST(0.999939), FRAC_CONST(0.99976), FRAC_CONST(0.999082), FRAC_CONST(0.996885), FRAC_CONST(0.992248), FRAC_CONST(0.987654), FRAC_CONST(0.985507), FRAC_CONST(0.984848), FRAC_CONST(0.984674), FRAC_CONST(0.98463), FRAC_CONST(0.984619) }, |
168 | { FRAC_CONST(0.999998), FRAC_CONST(0.999992), FRAC_CONST(0.99997), FRAC_CONST(0.99988), FRAC_CONST(0.999541), FRAC_CONST(0.99844), FRAC_CONST(0.996109), FRAC_CONST(0.993789), FRAC_CONST(0.992701), FRAC_CONST(0.992366), FRAC_CONST(0.992278), FRAC_CONST(0.992256), FRAC_CONST(0.99225) }, |
169 | { FRAC_CONST(0.999999), FRAC_CONST(0.999996), FRAC_CONST(0.999985), FRAC_CONST(0.99994), FRAC_CONST(0.99977), FRAC_CONST(0.999219), FRAC_CONST(0.998051), FRAC_CONST(0.996885), FRAC_CONST(0.996337), FRAC_CONST(0.996169), FRAC_CONST(0.996124), FRAC_CONST(0.996113), FRAC_CONST(0.99611) }, |
170 | { FRAC_CONST(1), FRAC_CONST(0.999998), FRAC_CONST(0.999992), FRAC_CONST(0.99997), FRAC_CONST(0.999885), FRAC_CONST(0.99961), FRAC_CONST(0.999024), FRAC_CONST(0.99844), FRAC_CONST(0.998165), FRAC_CONST(0.998081), FRAC_CONST(0.998058), FRAC_CONST(0.998053), FRAC_CONST(0.998051) }, |
171 | { FRAC_CONST(1), FRAC_CONST(0.999999), FRAC_CONST(0.999996), FRAC_CONST(0.999985), FRAC_CONST(0.999943), FRAC_CONST(0.999805), FRAC_CONST(0.999512), FRAC_CONST(0.999219), FRAC_CONST(0.999082), FRAC_CONST(0.999039), FRAC_CONST(0.999028), FRAC_CONST(0.999025), FRAC_CONST(0.999025) }, |
172 | { FRAC_CONST(1), FRAC_CONST(1), FRAC_CONST(0.999998), FRAC_CONST(0.999992), FRAC_CONST(0.999971), FRAC_CONST(0.999902), FRAC_CONST(0.999756), FRAC_CONST(0.99961), FRAC_CONST(0.999541), FRAC_CONST(0.999519), FRAC_CONST(0.999514), FRAC_CONST(0.999512), FRAC_CONST(0.999512) }, |
173 | { FRAC_CONST(1), FRAC_CONST(1), FRAC_CONST(0.999999), FRAC_CONST(0.999996), FRAC_CONST(0.999986), FRAC_CONST(0.999951), FRAC_CONST(0.999878), FRAC_CONST(0.999805), FRAC_CONST(0.99977), FRAC_CONST(0.99976), FRAC_CONST(0.999757), FRAC_CONST(0.999756), FRAC_CONST(0.999756) }, |
174 | { FRAC_CONST(1), FRAC_CONST(1), FRAC_CONST(1), FRAC_CONST(0.999998), FRAC_CONST(0.999993), FRAC_CONST(0.999976), FRAC_CONST(0.999939), FRAC_CONST(0.999902), FRAC_CONST(0.999885), FRAC_CONST(0.99988), FRAC_CONST(0.999878), FRAC_CONST(0.999878), FRAC_CONST(0.999878) }, |
175 | { FRAC_CONST(1), FRAC_CONST(1), FRAC_CONST(1), FRAC_CONST(0.999999), FRAC_CONST(0.999996), FRAC_CONST(0.999988), FRAC_CONST(0.999969), FRAC_CONST(0.999951), FRAC_CONST(0.999943), FRAC_CONST(0.99994), FRAC_CONST(0.999939), FRAC_CONST(0.999939), FRAC_CONST(0.999939) }, |
176 | { FRAC_CONST(1), FRAC_CONST(1), FRAC_CONST(1), FRAC_CONST(1), FRAC_CONST(0.999998), FRAC_CONST(0.999994), FRAC_CONST(0.999985), FRAC_CONST(0.999976), FRAC_CONST(0.999971), FRAC_CONST(0.99997), FRAC_CONST(0.99997), FRAC_CONST(0.99997), FRAC_CONST(0.999969) }, |
177 | { FRAC_CONST(1), FRAC_CONST(1), FRAC_CONST(1), FRAC_CONST(1), FRAC_CONST(0.999999), FRAC_CONST(0.999997), FRAC_CONST(0.999992), FRAC_CONST(0.999988), FRAC_CONST(0.999986), FRAC_CONST(0.999985), FRAC_CONST(0.999985), FRAC_CONST(0.999985), FRAC_CONST(0.999985) }, |
178 | { FRAC_CONST(1), FRAC_CONST(1), FRAC_CONST(1), FRAC_CONST(1), FRAC_CONST(1), FRAC_CONST(0.999998), FRAC_CONST(0.999996), FRAC_CONST(0.999994), FRAC_CONST(0.999993), FRAC_CONST(0.999992), FRAC_CONST(0.999992), FRAC_CONST(0.999992), FRAC_CONST(0.999992) }, |
179 | { FRAC_CONST(1), FRAC_CONST(1), FRAC_CONST(1), FRAC_CONST(1), FRAC_CONST(1), FRAC_CONST(0.999999), FRAC_CONST(0.999998), FRAC_CONST(0.999997), FRAC_CONST(0.999996), FRAC_CONST(0.999996), FRAC_CONST(0.999996), FRAC_CONST(0.999996), FRAC_CONST(0.999996) }, |
180 | { FRAC_CONST(1), FRAC_CONST(1), FRAC_CONST(1), FRAC_CONST(1), FRAC_CONST(1), FRAC_CONST(1), FRAC_CONST(0.999999), FRAC_CONST(0.999998), FRAC_CONST(0.999998), FRAC_CONST(0.999998), FRAC_CONST(0.999998), FRAC_CONST(0.999998), FRAC_CONST(0.999998) }, |
181 | { FRAC_CONST(1), FRAC_CONST(1), FRAC_CONST(1), FRAC_CONST(1), FRAC_CONST(1), FRAC_CONST(1), FRAC_CONST(1), FRAC_CONST(0.999999), FRAC_CONST(0.999999), FRAC_CONST(0.999999), FRAC_CONST(0.999999), FRAC_CONST(0.999999), FRAC_CONST(0.999999) }, |
182 | { FRAC_CONST(1), FRAC_CONST(1), FRAC_CONST(1), FRAC_CONST(1), FRAC_CONST(1), FRAC_CONST(1), FRAC_CONST(1), FRAC_CONST(1), FRAC_CONST(1), FRAC_CONST(1), FRAC_CONST(1), FRAC_CONST(1), FRAC_CONST(1) }, |
183 | { FRAC_CONST(1), FRAC_CONST(1), FRAC_CONST(1), FRAC_CONST(1), FRAC_CONST(1), FRAC_CONST(1), FRAC_CONST(1), FRAC_CONST(1), FRAC_CONST(1), FRAC_CONST(1), FRAC_CONST(1), FRAC_CONST(1), FRAC_CONST(1) }, |
184 | { FRAC_CONST(1), FRAC_CONST(1), FRAC_CONST(1), FRAC_CONST(1), FRAC_CONST(1), FRAC_CONST(1), FRAC_CONST(1), FRAC_CONST(1), FRAC_CONST(1), FRAC_CONST(1), FRAC_CONST(1), FRAC_CONST(1), FRAC_CONST(1) } |
185 | }; |
186 | |
187 | static const real_t Q_div_tab_right[31][13] = { |
188 | { FRAC_CONST(0.00775382), FRAC_CONST(0.00775945), FRAC_CONST(0.00778198), FRAC_CONST(0.00787211), FRAC_CONST(0.00823245), FRAC_CONST(0.00967118), FRAC_CONST(0.0153846), FRAC_CONST(0.037594), FRAC_CONST(0.117241), FRAC_CONST(0.336788), FRAC_CONST(0.667532), FRAC_CONST(0.888985), FRAC_CONST(0.969704) }, |
189 | { FRAC_CONST(0.0153883), FRAC_CONST(0.0153994), FRAC_CONST(0.0154438), FRAC_CONST(0.0156212), FRAC_CONST(0.0163305), FRAC_CONST(0.0191571), FRAC_CONST(0.030303), FRAC_CONST(0.0724638), FRAC_CONST(0.209877), FRAC_CONST(0.503876), FRAC_CONST(0.800623), FRAC_CONST(0.94123), FRAC_CONST(0.984619) }, |
190 | { FRAC_CONST(0.0303102), FRAC_CONST(0.0303317), FRAC_CONST(0.0304178), FRAC_CONST(0.0307619), FRAC_CONST(0.0321361), FRAC_CONST(0.037594), FRAC_CONST(0.0588235), FRAC_CONST(0.135135), FRAC_CONST(0.346939), FRAC_CONST(0.670103), FRAC_CONST(0.889273), FRAC_CONST(0.969726), FRAC_CONST(0.99225) }, |
191 | { FRAC_CONST(0.058837), FRAC_CONST(0.0588776), FRAC_CONST(0.0590397), FRAC_CONST(0.0596878), FRAC_CONST(0.0622711), FRAC_CONST(0.0724638), FRAC_CONST(0.111111), FRAC_CONST(0.238095), FRAC_CONST(0.515152), FRAC_CONST(0.802469), FRAC_CONST(0.941392), FRAC_CONST(0.98463), FRAC_CONST(0.99611) }, |
192 | { FRAC_CONST(0.111135), FRAC_CONST(0.111208), FRAC_CONST(0.111497), FRAC_CONST(0.112652), FRAC_CONST(0.117241), FRAC_CONST(0.135135), FRAC_CONST(0.2), FRAC_CONST(0.384615), FRAC_CONST(0.68), FRAC_CONST(0.890411), FRAC_CONST(0.969811), FRAC_CONST(0.992256), FRAC_CONST(0.998051) }, |
193 | { FRAC_CONST(0.200039), FRAC_CONST(0.200156), FRAC_CONST(0.200625), FRAC_CONST(0.202492), FRAC_CONST(0.209877), FRAC_CONST(0.238095), FRAC_CONST(0.333333), FRAC_CONST(0.555556), FRAC_CONST(0.809524), FRAC_CONST(0.942029), FRAC_CONST(0.984674), FRAC_CONST(0.996113), FRAC_CONST(0.999025) }, |
194 | { FRAC_CONST(0.333388), FRAC_CONST(0.33355), FRAC_CONST(0.3342), FRAC_CONST(0.336788), FRAC_CONST(0.346939), FRAC_CONST(0.384615), FRAC_CONST(0.5), FRAC_CONST(0.714286), FRAC_CONST(0.894737), FRAC_CONST(0.970149), FRAC_CONST(0.992278), FRAC_CONST(0.998053), FRAC_CONST(0.999512) }, |
195 | { FRAC_CONST(0.500061), FRAC_CONST(0.500244), FRAC_CONST(0.500975), FRAC_CONST(0.503876), FRAC_CONST(0.515152), FRAC_CONST(0.555556), FRAC_CONST(0.666667), FRAC_CONST(0.833333), FRAC_CONST(0.944444), FRAC_CONST(0.984848), FRAC_CONST(0.996124), FRAC_CONST(0.999025), FRAC_CONST(0.999756) }, |
196 | { FRAC_CONST(0.666721), FRAC_CONST(0.666884), FRAC_CONST(0.667532), FRAC_CONST(0.670103), FRAC_CONST(0.68), FRAC_CONST(0.714286), FRAC_CONST(0.8), FRAC_CONST(0.909091), FRAC_CONST(0.971429), FRAC_CONST(0.992366), FRAC_CONST(0.998058), FRAC_CONST(0.999512), FRAC_CONST(0.999878) }, |
197 | { FRAC_CONST(0.800039), FRAC_CONST(0.800156), FRAC_CONST(0.800623), FRAC_CONST(0.802469), FRAC_CONST(0.809524), FRAC_CONST(0.833333), FRAC_CONST(0.888889), FRAC_CONST(0.952381), FRAC_CONST(0.985507), FRAC_CONST(0.996169), FRAC_CONST(0.999028), FRAC_CONST(0.999756), FRAC_CONST(0.999939) }, |
198 | { FRAC_CONST(0.888913), FRAC_CONST(0.888985), FRAC_CONST(0.889273), FRAC_CONST(0.890411), FRAC_CONST(0.894737), FRAC_CONST(0.909091), FRAC_CONST(0.941176), FRAC_CONST(0.97561), FRAC_CONST(0.992701), FRAC_CONST(0.998081), FRAC_CONST(0.999514), FRAC_CONST(0.999878), FRAC_CONST(0.999969) }, |
199 | { FRAC_CONST(0.94119), FRAC_CONST(0.94123), FRAC_CONST(0.941392), FRAC_CONST(0.942029), FRAC_CONST(0.944444), FRAC_CONST(0.952381), FRAC_CONST(0.969697), FRAC_CONST(0.987654), FRAC_CONST(0.996337), FRAC_CONST(0.999039), FRAC_CONST(0.999757), FRAC_CONST(0.999939), FRAC_CONST(0.999985) }, |
200 | { FRAC_CONST(0.969704), FRAC_CONST(0.969726), FRAC_CONST(0.969811), FRAC_CONST(0.970149), FRAC_CONST(0.971429), FRAC_CONST(0.97561), FRAC_CONST(0.984615), FRAC_CONST(0.993789), FRAC_CONST(0.998165), FRAC_CONST(0.999519), FRAC_CONST(0.999878), FRAC_CONST(0.99997), FRAC_CONST(0.999992) }, |
201 | { FRAC_CONST(0.984619), FRAC_CONST(0.98463), FRAC_CONST(0.984674), FRAC_CONST(0.984848), FRAC_CONST(0.985507), FRAC_CONST(0.987654), FRAC_CONST(0.992248), FRAC_CONST(0.996885), FRAC_CONST(0.999082), FRAC_CONST(0.99976), FRAC_CONST(0.999939), FRAC_CONST(0.999985), FRAC_CONST(0.999996) }, |
202 | { FRAC_CONST(0.99225), FRAC_CONST(0.992256), FRAC_CONST(0.992278), FRAC_CONST(0.992366), FRAC_CONST(0.992701), FRAC_CONST(0.993789), FRAC_CONST(0.996109), FRAC_CONST(0.99844), FRAC_CONST(0.999541), FRAC_CONST(0.99988), FRAC_CONST(0.99997), FRAC_CONST(0.999992), FRAC_CONST(0.999998) }, |
203 | { FRAC_CONST(0.99611), FRAC_CONST(0.996113), FRAC_CONST(0.996124), FRAC_CONST(0.996169), FRAC_CONST(0.996337), FRAC_CONST(0.996885), FRAC_CONST(0.998051), FRAC_CONST(0.999219), FRAC_CONST(0.99977), FRAC_CONST(0.99994), FRAC_CONST(0.999985), FRAC_CONST(0.999996), FRAC_CONST(0.999999) }, |
204 | { FRAC_CONST(0.998051), FRAC_CONST(0.998053), FRAC_CONST(0.998058), FRAC_CONST(0.998081), FRAC_CONST(0.998165), FRAC_CONST(0.99844), FRAC_CONST(0.999024), FRAC_CONST(0.99961), FRAC_CONST(0.999885), FRAC_CONST(0.99997), FRAC_CONST(0.999992), FRAC_CONST(0.999998), FRAC_CONST(1) }, |
205 | { FRAC_CONST(0.999025), FRAC_CONST(0.999025), FRAC_CONST(0.999028), FRAC_CONST(0.999039), FRAC_CONST(0.999082), FRAC_CONST(0.999219), FRAC_CONST(0.999512), FRAC_CONST(0.999805), FRAC_CONST(0.999943), FRAC_CONST(0.999985), FRAC_CONST(0.999996), FRAC_CONST(0.999999), FRAC_CONST(1) }, |
206 | { FRAC_CONST(0.999512), FRAC_CONST(0.999512), FRAC_CONST(0.999514), FRAC_CONST(0.999519), FRAC_CONST(0.999541), FRAC_CONST(0.99961), FRAC_CONST(0.999756), FRAC_CONST(0.999902), FRAC_CONST(0.999971), FRAC_CONST(0.999992), FRAC_CONST(0.999998), FRAC_CONST(1), FRAC_CONST(1) }, |
207 | { FRAC_CONST(0.999756), FRAC_CONST(0.999756), FRAC_CONST(0.999757), FRAC_CONST(0.99976), FRAC_CONST(0.99977), FRAC_CONST(0.999805), FRAC_CONST(0.999878), FRAC_CONST(0.999951), FRAC_CONST(0.999986), FRAC_CONST(0.999996), FRAC_CONST(0.999999), FRAC_CONST(1), FRAC_CONST(1) }, |
208 | { FRAC_CONST(0.999878), FRAC_CONST(0.999878), FRAC_CONST(0.999878), FRAC_CONST(0.99988), FRAC_CONST(0.999885), FRAC_CONST(0.999902), FRAC_CONST(0.999939), FRAC_CONST(0.999976), FRAC_CONST(0.999993), FRAC_CONST(0.999998), FRAC_CONST(1), FRAC_CONST(1), FRAC_CONST(1) }, |
209 | { FRAC_CONST(0.999939), FRAC_CONST(0.999939), FRAC_CONST(0.999939), FRAC_CONST(0.99994), FRAC_CONST(0.999943), FRAC_CONST(0.999951), FRAC_CONST(0.999969), FRAC_CONST(0.999988), FRAC_CONST(0.999996), FRAC_CONST(0.999999), FRAC_CONST(1), FRAC_CONST(1), FRAC_CONST(1) }, |
210 | { FRAC_CONST(0.999969), FRAC_CONST(0.99997), FRAC_CONST(0.99997), FRAC_CONST(0.99997), FRAC_CONST(0.999971), FRAC_CONST(0.999976), FRAC_CONST(0.999985), FRAC_CONST(0.999994), FRAC_CONST(0.999998), FRAC_CONST(1), FRAC_CONST(1), FRAC_CONST(1), FRAC_CONST(1) }, |
211 | { FRAC_CONST(0.999985), FRAC_CONST(0.999985), FRAC_CONST(0.999985), FRAC_CONST(0.999985), FRAC_CONST(0.999986), FRAC_CONST(0.999988), FRAC_CONST(0.999992), FRAC_CONST(0.999997), FRAC_CONST(0.999999), FRAC_CONST(1), FRAC_CONST(1), FRAC_CONST(1), FRAC_CONST(1) }, |
212 | { FRAC_CONST(0.999992), FRAC_CONST(0.999992), FRAC_CONST(0.999992), FRAC_CONST(0.999992), FRAC_CONST(0.999993), FRAC_CONST(0.999994), FRAC_CONST(0.999996), FRAC_CONST(0.999998), FRAC_CONST(1), FRAC_CONST(1), FRAC_CONST(1), FRAC_CONST(1), FRAC_CONST(1) }, |
213 | { FRAC_CONST(0.999996), FRAC_CONST(0.999996), FRAC_CONST(0.999996), FRAC_CONST(0.999996), FRAC_CONST(0.999996), FRAC_CONST(0.999997), FRAC_CONST(0.999998), FRAC_CONST(0.999999), FRAC_CONST(1), FRAC_CONST(1), FRAC_CONST(1), FRAC_CONST(1), FRAC_CONST(1) }, |
214 | { FRAC_CONST(0.999998), FRAC_CONST(0.999998), FRAC_CONST(0.999998), FRAC_CONST(0.999998), FRAC_CONST(0.999998), FRAC_CONST(0.999998), FRAC_CONST(0.999999), FRAC_CONST(1), FRAC_CONST(1), FRAC_CONST(1), FRAC_CONST(1), FRAC_CONST(1), FRAC_CONST(1) }, |
215 | { FRAC_CONST(0.999999), FRAC_CONST(0.999999), FRAC_CONST(0.999999), FRAC_CONST(0.999999), FRAC_CONST(0.999999), FRAC_CONST(0.999999), FRAC_CONST(1), FRAC_CONST(1), FRAC_CONST(1), FRAC_CONST(1), FRAC_CONST(1), FRAC_CONST(1), FRAC_CONST(1) }, |
216 | { FRAC_CONST(1), FRAC_CONST(1), FRAC_CONST(1), FRAC_CONST(1), FRAC_CONST(1), FRAC_CONST(1), FRAC_CONST(1), FRAC_CONST(1), FRAC_CONST(1), FRAC_CONST(1), FRAC_CONST(1), FRAC_CONST(1), FRAC_CONST(1) }, |
217 | { FRAC_CONST(1), FRAC_CONST(1), FRAC_CONST(1), FRAC_CONST(1), FRAC_CONST(1), FRAC_CONST(1), FRAC_CONST(1), FRAC_CONST(1), FRAC_CONST(1), FRAC_CONST(1), FRAC_CONST(1), FRAC_CONST(1), FRAC_CONST(1) }, |
218 | { FRAC_CONST(1), FRAC_CONST(1), FRAC_CONST(1), FRAC_CONST(1), FRAC_CONST(1), FRAC_CONST(1), FRAC_CONST(1), FRAC_CONST(1), FRAC_CONST(1), FRAC_CONST(1), FRAC_CONST(1), FRAC_CONST(1), FRAC_CONST(1) } |
219 | }; |
220 | |
221 | /* calculates 1/(1+Q) */ |
222 | /* [0..1] */ |
223 | static real_t calc_Q_div(sbr_info *sbr, uint8_t ch, uint8_t m, uint8_t l) |
224 | { |
225 | if (sbr->bs_coupling) { |
226 | /* left channel */ |
227 | if ((sbr->Q[0][m][l] < 0 || sbr->Q[0][m][l] > 30) || |
228 | (sbr->Q[1][m][l] < 0 || sbr->Q[1][m][l] > 24 /* 2*panOffset(1) */)) { |
229 | return 0; |
230 | } else { |
231 | /* the pan parameter is always even */ |
232 | if (ch == 0) { |
233 | return Q_div_tab_left[sbr->Q[0][m][l]][sbr->Q[1][m][l] >> 1]; |
234 | } else { |
235 | return Q_div_tab_right[sbr->Q[0][m][l]][sbr->Q[1][m][l] >> 1]; |
236 | } |
237 | } |
238 | } else { |
239 | /* no coupling */ |
240 | if (sbr->Q[ch][m][l] < 0 || sbr->Q[ch][m][l] > 30) { |
241 | return 0; |
242 | } else { |
243 | return Q_div_tab[sbr->Q[ch][m][l]]; |
244 | } |
245 | } |
246 | } |
247 | |
248 | /* table for Q_div2 values when no coupling */ |
249 | static const real_t Q_div2_tab[31] = { |
250 | FRAC_CONST(0.984615), FRAC_CONST(0.969697), |
251 | FRAC_CONST(0.941176), FRAC_CONST(0.888889), |
252 | FRAC_CONST(0.8), FRAC_CONST(0.666667), |
253 | FRAC_CONST(0.5), FRAC_CONST(0.333333), |
254 | FRAC_CONST(0.2), FRAC_CONST(0.111111), |
255 | FRAC_CONST(0.0588235), FRAC_CONST(0.030303), |
256 | FRAC_CONST(0.0153846), FRAC_CONST(0.00775194), |
257 | FRAC_CONST(0.00389105), FRAC_CONST(0.00194932), |
258 | FRAC_CONST(0.00097561), FRAC_CONST(0.000488043), |
259 | FRAC_CONST(0.000244081), FRAC_CONST(0.000122055), |
260 | FRAC_CONST(6.10314E-005), FRAC_CONST(3.05166E-005), |
261 | FRAC_CONST(1.52586E-005), FRAC_CONST(7.62934E-006), |
262 | FRAC_CONST(3.81468E-006), FRAC_CONST(1.90734E-006), |
263 | FRAC_CONST(9.53673E-007), FRAC_CONST(4.76837E-007), |
264 | FRAC_CONST(2.38419E-007), FRAC_CONST(1.19209E-007), |
265 | FRAC_CONST(5.96046E-008) |
266 | }; |
267 | |
268 | static const real_t Q_div2_tab_left[31][13] = { |
269 | { FRAC_CONST(0.0302959), FRAC_CONST(0.111015), FRAC_CONST(0.332468), FRAC_CONST(0.663212), FRAC_CONST(0.882759), FRAC_CONST(0.962406), FRAC_CONST(0.984615), FRAC_CONST(0.990329), FRAC_CONST(0.991768), FRAC_CONST(0.992128), FRAC_CONST(0.992218), FRAC_CONST(0.992241), FRAC_CONST(0.992246) }, |
270 | { FRAC_CONST(0.0153809), FRAC_CONST(0.0587695), FRAC_CONST(0.199377), FRAC_CONST(0.496124), FRAC_CONST(0.790123), FRAC_CONST(0.927536), FRAC_CONST(0.969697), FRAC_CONST(0.980843), FRAC_CONST(0.98367), FRAC_CONST(0.984379), FRAC_CONST(0.984556), FRAC_CONST(0.984601), FRAC_CONST(0.984612) }, |
271 | { FRAC_CONST(0.00775006), FRAC_CONST(0.0302744), FRAC_CONST(0.110727), FRAC_CONST(0.329897), FRAC_CONST(0.653061), FRAC_CONST(0.864865), FRAC_CONST(0.941176), FRAC_CONST(0.962406), FRAC_CONST(0.967864), FRAC_CONST(0.969238), FRAC_CONST(0.969582), FRAC_CONST(0.969668), FRAC_CONST(0.96969) }, |
272 | { FRAC_CONST(0.0038901), FRAC_CONST(0.0153698), FRAC_CONST(0.0586081), FRAC_CONST(0.197531), FRAC_CONST(0.484848), FRAC_CONST(0.761905), FRAC_CONST(0.888889), FRAC_CONST(0.927536), FRAC_CONST(0.937729), FRAC_CONST(0.940312), FRAC_CONST(0.94096), FRAC_CONST(0.941122), FRAC_CONST(0.941163) }, |
273 | { FRAC_CONST(0.00194884), FRAC_CONST(0.00774443), FRAC_CONST(0.0301887), FRAC_CONST(0.109589), FRAC_CONST(0.32), FRAC_CONST(0.615385), FRAC_CONST(0.8), FRAC_CONST(0.864865), FRAC_CONST(0.882759), FRAC_CONST(0.887348), FRAC_CONST(0.888503), FRAC_CONST(0.888792), FRAC_CONST(0.888865) }, |
274 | { FRAC_CONST(0.000975372), FRAC_CONST(0.00388727), FRAC_CONST(0.0153257), FRAC_CONST(0.057971), FRAC_CONST(0.190476), FRAC_CONST(0.444444), FRAC_CONST(0.666667), FRAC_CONST(0.761905), FRAC_CONST(0.790123), FRAC_CONST(0.797508), FRAC_CONST(0.799375), FRAC_CONST(0.799844), FRAC_CONST(0.799961) }, |
275 | { FRAC_CONST(0.000487924), FRAC_CONST(0.00194742), FRAC_CONST(0.00772201), FRAC_CONST(0.0298507), FRAC_CONST(0.105263), FRAC_CONST(0.285714), FRAC_CONST(0.5), FRAC_CONST(0.615385), FRAC_CONST(0.653061), FRAC_CONST(0.663212), FRAC_CONST(0.6658), FRAC_CONST(0.66645), FRAC_CONST(0.666612) }, |
276 | { FRAC_CONST(0.000244021), FRAC_CONST(0.000974659), FRAC_CONST(0.00387597), FRAC_CONST(0.0151515), FRAC_CONST(0.0555556), FRAC_CONST(0.166667), FRAC_CONST(0.333333), FRAC_CONST(0.444444), FRAC_CONST(0.484848), FRAC_CONST(0.496124), FRAC_CONST(0.499025), FRAC_CONST(0.499756), FRAC_CONST(0.499939) }, |
277 | { FRAC_CONST(0.000122026), FRAC_CONST(0.000487567), FRAC_CONST(0.00194175), FRAC_CONST(0.00763359), FRAC_CONST(0.0285714), FRAC_CONST(0.0909091), FRAC_CONST(0.2), FRAC_CONST(0.285714), FRAC_CONST(0.32), FRAC_CONST(0.329897), FRAC_CONST(0.332468), FRAC_CONST(0.333116), FRAC_CONST(0.333279) }, |
278 | { FRAC_CONST(6.10165E-005), FRAC_CONST(0.000243843), FRAC_CONST(0.000971817), FRAC_CONST(0.00383142), FRAC_CONST(0.0144928), FRAC_CONST(0.047619), FRAC_CONST(0.111111), FRAC_CONST(0.166667), FRAC_CONST(0.190476), FRAC_CONST(0.197531), FRAC_CONST(0.199377), FRAC_CONST(0.199844), FRAC_CONST(0.199961) }, |
279 | { FRAC_CONST(3.05092E-005), FRAC_CONST(0.000121936), FRAC_CONST(0.000486145), FRAC_CONST(0.00191939), FRAC_CONST(0.00729927), FRAC_CONST(0.0243902), FRAC_CONST(0.0588235), FRAC_CONST(0.0909091), FRAC_CONST(0.105263), FRAC_CONST(0.109589), FRAC_CONST(0.110727), FRAC_CONST(0.111015), FRAC_CONST(0.111087) }, |
280 | { FRAC_CONST(1.52548E-005), FRAC_CONST(6.09719E-005), FRAC_CONST(0.000243132), FRAC_CONST(0.000960615), FRAC_CONST(0.003663), FRAC_CONST(0.0123457), FRAC_CONST(0.030303), FRAC_CONST(0.047619), FRAC_CONST(0.0555556), FRAC_CONST(0.057971), FRAC_CONST(0.0586081), FRAC_CONST(0.0587695), FRAC_CONST(0.05881) }, |
281 | { FRAC_CONST(7.62747E-006), FRAC_CONST(3.04869E-005), FRAC_CONST(0.000121581), FRAC_CONST(0.000480538), FRAC_CONST(0.00183486), FRAC_CONST(0.00621118), FRAC_CONST(0.0153846), FRAC_CONST(0.0243902), FRAC_CONST(0.0285714), FRAC_CONST(0.0298507), FRAC_CONST(0.0301887), FRAC_CONST(0.0302744), FRAC_CONST(0.0302959) }, |
282 | { FRAC_CONST(3.81375E-006), FRAC_CONST(1.52437E-005), FRAC_CONST(6.0794E-005), FRAC_CONST(0.000240327), FRAC_CONST(0.000918274), FRAC_CONST(0.00311526), FRAC_CONST(0.00775194), FRAC_CONST(0.0123457), FRAC_CONST(0.0144928), FRAC_CONST(0.0151515), FRAC_CONST(0.0153257), FRAC_CONST(0.0153698), FRAC_CONST(0.0153809) }, |
283 | { FRAC_CONST(1.90688E-006), FRAC_CONST(7.62189E-006), FRAC_CONST(3.03979E-005), FRAC_CONST(0.000120178), FRAC_CONST(0.000459348), FRAC_CONST(0.00156006), FRAC_CONST(0.00389105), FRAC_CONST(0.00621118), FRAC_CONST(0.00729927), FRAC_CONST(0.00763359), FRAC_CONST(0.00772201), FRAC_CONST(0.00774443), FRAC_CONST(0.00775006) }, |
284 | { FRAC_CONST(9.53441E-007), FRAC_CONST(3.81096E-006), FRAC_CONST(1.51992E-005), FRAC_CONST(6.00925E-005), FRAC_CONST(0.000229727), FRAC_CONST(0.00078064), FRAC_CONST(0.00194932), FRAC_CONST(0.00311526), FRAC_CONST(0.003663), FRAC_CONST(0.00383142), FRAC_CONST(0.00387597), FRAC_CONST(0.00388727), FRAC_CONST(0.0038901) }, |
285 | { FRAC_CONST(4.76721E-007), FRAC_CONST(1.90548E-006), FRAC_CONST(7.59965E-006), FRAC_CONST(3.00472E-005), FRAC_CONST(0.000114877), FRAC_CONST(0.000390472), FRAC_CONST(0.00097561), FRAC_CONST(0.00156006), FRAC_CONST(0.00183486), FRAC_CONST(0.00191939), FRAC_CONST(0.00194175), FRAC_CONST(0.00194742), FRAC_CONST(0.00194884) }, |
286 | { FRAC_CONST(2.3836E-007), FRAC_CONST(9.52743E-007), FRAC_CONST(3.79984E-006), FRAC_CONST(1.50238E-005), FRAC_CONST(5.74416E-005), FRAC_CONST(0.000195274), FRAC_CONST(0.000488043), FRAC_CONST(0.00078064), FRAC_CONST(0.000918274), FRAC_CONST(0.000960615), FRAC_CONST(0.000971817), FRAC_CONST(0.000974659), FRAC_CONST(0.000975372) }, |
287 | { FRAC_CONST(1.1918E-007), FRAC_CONST(4.76372E-007), FRAC_CONST(1.89992E-006), FRAC_CONST(7.51196E-006), FRAC_CONST(2.87216E-005), FRAC_CONST(9.76467E-005), FRAC_CONST(0.000244081), FRAC_CONST(0.000390472), FRAC_CONST(0.000459348), FRAC_CONST(0.000480538), FRAC_CONST(0.000486145), FRAC_CONST(0.000487567), FRAC_CONST(0.000487924) }, |
288 | { FRAC_CONST(5.95901E-008), FRAC_CONST(2.38186E-007), FRAC_CONST(9.49963E-007), FRAC_CONST(3.756E-006), FRAC_CONST(1.4361E-005), FRAC_CONST(4.88257E-005), FRAC_CONST(0.000122055), FRAC_CONST(0.000195274), FRAC_CONST(0.000229727), FRAC_CONST(0.000240327), FRAC_CONST(0.000243132), FRAC_CONST(0.000243843), FRAC_CONST(0.000244021) }, |
289 | { FRAC_CONST(2.9795E-008), FRAC_CONST(1.19093E-007), FRAC_CONST(4.74982E-007), FRAC_CONST(1.878E-006), FRAC_CONST(7.18056E-006), FRAC_CONST(2.44135E-005), FRAC_CONST(6.10314E-005), FRAC_CONST(9.76467E-005), FRAC_CONST(0.000114877), FRAC_CONST(0.000120178), FRAC_CONST(0.000121581), FRAC_CONST(0.000121936), FRAC_CONST(0.000122026) }, |
290 | { FRAC_CONST(1.48975E-008), FRAC_CONST(5.95465E-008), FRAC_CONST(2.37491E-007), FRAC_CONST(9.39002E-007), FRAC_CONST(3.59029E-006), FRAC_CONST(1.22069E-005), FRAC_CONST(3.05166E-005), FRAC_CONST(4.88257E-005), FRAC_CONST(5.74416E-005), FRAC_CONST(6.00925E-005), FRAC_CONST(6.0794E-005), FRAC_CONST(6.09719E-005), FRAC_CONST(6.10165E-005) }, |
291 | { FRAC_CONST(7.44876E-009), FRAC_CONST(2.97732E-008), FRAC_CONST(1.18745E-007), FRAC_CONST(4.69501E-007), FRAC_CONST(1.79515E-006), FRAC_CONST(6.10348E-006), FRAC_CONST(1.52586E-005), FRAC_CONST(2.44135E-005), FRAC_CONST(2.87216E-005), FRAC_CONST(3.00472E-005), FRAC_CONST(3.03979E-005), FRAC_CONST(3.04869E-005), FRAC_CONST(3.05092E-005) }, |
292 | { FRAC_CONST(3.72438E-009), FRAC_CONST(1.48866E-008), FRAC_CONST(5.93727E-008), FRAC_CONST(2.34751E-007), FRAC_CONST(8.97575E-007), FRAC_CONST(3.05175E-006), FRAC_CONST(7.62934E-006), FRAC_CONST(1.22069E-005), FRAC_CONST(1.4361E-005), FRAC_CONST(1.50238E-005), FRAC_CONST(1.51992E-005), FRAC_CONST(1.52437E-005), FRAC_CONST(1.52548E-005) }, |
293 | { FRAC_CONST(1.86219E-009), FRAC_CONST(7.44331E-009), FRAC_CONST(2.96864E-008), FRAC_CONST(1.17375E-007), FRAC_CONST(4.48788E-007), FRAC_CONST(1.52588E-006), FRAC_CONST(3.81468E-006), FRAC_CONST(6.10348E-006), FRAC_CONST(7.18056E-006), FRAC_CONST(7.51196E-006), FRAC_CONST(7.59965E-006), FRAC_CONST(7.62189E-006), FRAC_CONST(7.62747E-006) }, |
294 | { FRAC_CONST(9.31095E-010), FRAC_CONST(3.72166E-009), FRAC_CONST(1.48432E-008), FRAC_CONST(5.86876E-008), FRAC_CONST(2.24394E-007), FRAC_CONST(7.62939E-007), FRAC_CONST(1.90734E-006), FRAC_CONST(3.05175E-006), FRAC_CONST(3.59029E-006), FRAC_CONST(3.756E-006), FRAC_CONST(3.79984E-006), FRAC_CONST(3.81096E-006), FRAC_CONST(3.81375E-006) }, |
295 | { FRAC_CONST(4.65548E-010), FRAC_CONST(1.86083E-009), FRAC_CONST(7.42159E-009), FRAC_CONST(2.93438E-008), FRAC_CONST(1.12197E-007), FRAC_CONST(3.8147E-007), FRAC_CONST(9.53673E-007), FRAC_CONST(1.52588E-006), FRAC_CONST(1.79515E-006), FRAC_CONST(1.878E-006), FRAC_CONST(1.89992E-006), FRAC_CONST(1.90548E-006), FRAC_CONST(1.90688E-006) }, |
296 | { FRAC_CONST(2.32774E-010), FRAC_CONST(9.30414E-010), FRAC_CONST(3.71079E-009), FRAC_CONST(1.46719E-008), FRAC_CONST(5.60985E-008), FRAC_CONST(1.90735E-007), FRAC_CONST(4.76837E-007), FRAC_CONST(7.62939E-007), FRAC_CONST(8.97575E-007), FRAC_CONST(9.39002E-007), FRAC_CONST(9.49963E-007), FRAC_CONST(9.52743E-007), FRAC_CONST(9.53441E-007) }, |
297 | { FRAC_CONST(1.16387E-010), FRAC_CONST(4.65207E-010), FRAC_CONST(1.8554E-009), FRAC_CONST(7.33596E-009), FRAC_CONST(2.80492E-008), FRAC_CONST(9.53674E-008), FRAC_CONST(2.38419E-007), FRAC_CONST(3.8147E-007), FRAC_CONST(4.48788E-007), FRAC_CONST(4.69501E-007), FRAC_CONST(4.74982E-007), FRAC_CONST(4.76372E-007), FRAC_CONST(4.76721E-007) }, |
298 | { FRAC_CONST(5.81935E-011), FRAC_CONST(2.32603E-010), FRAC_CONST(9.27699E-010), FRAC_CONST(3.66798E-009), FRAC_CONST(1.40246E-008), FRAC_CONST(4.76837E-008), FRAC_CONST(1.19209E-007), FRAC_CONST(1.90735E-007), FRAC_CONST(2.24394E-007), FRAC_CONST(2.34751E-007), FRAC_CONST(2.37491E-007), FRAC_CONST(2.38186E-007), FRAC_CONST(2.3836E-007) }, |
299 | { FRAC_CONST(2.90967E-011), FRAC_CONST(1.16302E-010), FRAC_CONST(4.63849E-010), FRAC_CONST(1.83399E-009), FRAC_CONST(7.01231E-009), FRAC_CONST(2.38419E-008), FRAC_CONST(5.96046E-008), FRAC_CONST(9.53674E-008), FRAC_CONST(1.12197E-007), FRAC_CONST(1.17375E-007), FRAC_CONST(1.18745E-007), FRAC_CONST(1.19093E-007), FRAC_CONST(1.1918E-007) } |
300 | }; |
301 | |
302 | static const real_t Q_div2_tab_right[31][13] = { |
303 | { FRAC_CONST(0.992246), FRAC_CONST(0.992241), FRAC_CONST(0.992218), FRAC_CONST(0.992128), FRAC_CONST(0.991768), FRAC_CONST(0.990329), FRAC_CONST(0.984615), FRAC_CONST(0.962406), FRAC_CONST(0.882759), FRAC_CONST(0.663212), FRAC_CONST(0.332468), FRAC_CONST(0.111015), FRAC_CONST(0.0302959) }, |
304 | { FRAC_CONST(0.984612), FRAC_CONST(0.984601), FRAC_CONST(0.984556), FRAC_CONST(0.984379), FRAC_CONST(0.98367), FRAC_CONST(0.980843), FRAC_CONST(0.969697), FRAC_CONST(0.927536), FRAC_CONST(0.790123), FRAC_CONST(0.496124), FRAC_CONST(0.199377), FRAC_CONST(0.0587695), FRAC_CONST(0.0153809) }, |
305 | { FRAC_CONST(0.96969), FRAC_CONST(0.969668), FRAC_CONST(0.969582), FRAC_CONST(0.969238), FRAC_CONST(0.967864), FRAC_CONST(0.962406), FRAC_CONST(0.941176), FRAC_CONST(0.864865), FRAC_CONST(0.653061), FRAC_CONST(0.329897), FRAC_CONST(0.110727), FRAC_CONST(0.0302744), FRAC_CONST(0.00775006) }, |
306 | { FRAC_CONST(0.941163), FRAC_CONST(0.941122), FRAC_CONST(0.94096), FRAC_CONST(0.940312), FRAC_CONST(0.937729), FRAC_CONST(0.927536), FRAC_CONST(0.888889), FRAC_CONST(0.761905), FRAC_CONST(0.484848), FRAC_CONST(0.197531), FRAC_CONST(0.0586081), FRAC_CONST(0.0153698), FRAC_CONST(0.0038901) }, |
307 | { FRAC_CONST(0.888865), FRAC_CONST(0.888792), FRAC_CONST(0.888503), FRAC_CONST(0.887348), FRAC_CONST(0.882759), FRAC_CONST(0.864865), FRAC_CONST(0.8), FRAC_CONST(0.615385), FRAC_CONST(0.32), FRAC_CONST(0.109589), FRAC_CONST(0.0301887), FRAC_CONST(0.00774443), FRAC_CONST(0.00194884) }, |
308 | { FRAC_CONST(0.799961), FRAC_CONST(0.799844), FRAC_CONST(0.799375), FRAC_CONST(0.797508), FRAC_CONST(0.790123), FRAC_CONST(0.761905), FRAC_CONST(0.666667), FRAC_CONST(0.444444), FRAC_CONST(0.190476), FRAC_CONST(0.057971), FRAC_CONST(0.0153257), FRAC_CONST(0.00388727), FRAC_CONST(0.000975372) }, |
309 | { FRAC_CONST(0.666612), FRAC_CONST(0.66645), FRAC_CONST(0.6658), FRAC_CONST(0.663212), FRAC_CONST(0.653061), FRAC_CONST(0.615385), FRAC_CONST(0.5), FRAC_CONST(0.285714), FRAC_CONST(0.105263), FRAC_CONST(0.0298507), FRAC_CONST(0.00772201), FRAC_CONST(0.00194742), FRAC_CONST(0.000487924) }, |
310 | { FRAC_CONST(0.499939), FRAC_CONST(0.499756), FRAC_CONST(0.499025), FRAC_CONST(0.496124), FRAC_CONST(0.484848), FRAC_CONST(0.444444), FRAC_CONST(0.333333), FRAC_CONST(0.166667), FRAC_CONST(0.0555556), FRAC_CONST(0.0151515), FRAC_CONST(0.00387597), FRAC_CONST(0.000974659), FRAC_CONST(0.000244021) }, |
311 | { FRAC_CONST(0.333279), FRAC_CONST(0.333116), FRAC_CONST(0.332468), FRAC_CONST(0.329897), FRAC_CONST(0.32), FRAC_CONST(0.285714), FRAC_CONST(0.2), FRAC_CONST(0.0909091), FRAC_CONST(0.0285714), FRAC_CONST(0.00763359), FRAC_CONST(0.00194175), FRAC_CONST(0.000487567), FRAC_CONST(0.000122026) }, |
312 | { FRAC_CONST(0.199961), FRAC_CONST(0.199844), FRAC_CONST(0.199377), FRAC_CONST(0.197531), FRAC_CONST(0.190476), FRAC_CONST(0.166667), FRAC_CONST(0.111111), FRAC_CONST(0.047619), FRAC_CONST(0.0144928), FRAC_CONST(0.00383142), FRAC_CONST(0.000971817), FRAC_CONST(0.000243843), FRAC_CONST(6.10165E-005) }, |
313 | { FRAC_CONST(0.111087), FRAC_CONST(0.111015), FRAC_CONST(0.110727), FRAC_CONST(0.109589), FRAC_CONST(0.105263), FRAC_CONST(0.0909091), FRAC_CONST(0.0588235), FRAC_CONST(0.0243902), FRAC_CONST(0.00729927), FRAC_CONST(0.00191939), FRAC_CONST(0.000486145), FRAC_CONST(0.000121936), FRAC_CONST(3.05092E-005) }, |
314 | { FRAC_CONST(0.05881), FRAC_CONST(0.0587695), FRAC_CONST(0.0586081), FRAC_CONST(0.057971), FRAC_CONST(0.0555556), FRAC_CONST(0.047619), FRAC_CONST(0.030303), FRAC_CONST(0.0123457), FRAC_CONST(0.003663), FRAC_CONST(0.000960615), FRAC_CONST(0.000243132), FRAC_CONST(6.09719E-005), FRAC_CONST(1.52548E-005) }, |
315 | { FRAC_CONST(0.0302959), FRAC_CONST(0.0302744), FRAC_CONST(0.0301887), FRAC_CONST(0.0298507), FRAC_CONST(0.0285714), FRAC_CONST(0.0243902), FRAC_CONST(0.0153846), FRAC_CONST(0.00621118), FRAC_CONST(0.00183486), FRAC_CONST(0.000480538), FRAC_CONST(0.000121581), FRAC_CONST(3.04869E-005), FRAC_CONST(7.62747E-006) }, |
316 | { FRAC_CONST(0.0153809), FRAC_CONST(0.0153698), FRAC_CONST(0.0153257), FRAC_CONST(0.0151515), FRAC_CONST(0.0144928), FRAC_CONST(0.0123457), FRAC_CONST(0.00775194), FRAC_CONST(0.00311526), FRAC_CONST(0.000918274), FRAC_CONST(0.000240327), FRAC_CONST(6.0794E-005), FRAC_CONST(1.52437E-005), FRAC_CONST(3.81375E-006) }, |
317 | { FRAC_CONST(0.00775006), FRAC_CONST(0.00774443), FRAC_CONST(0.00772201), FRAC_CONST(0.00763359), FRAC_CONST(0.00729927), FRAC_CONST(0.00621118), FRAC_CONST(0.00389105), FRAC_CONST(0.00156006), FRAC_CONST(0.000459348), FRAC_CONST(0.000120178), FRAC_CONST(3.03979E-005), FRAC_CONST(7.62189E-006), FRAC_CONST(1.90688E-006) }, |
318 | { FRAC_CONST(0.0038901), FRAC_CONST(0.00388727), FRAC_CONST(0.00387597), FRAC_CONST(0.00383142), FRAC_CONST(0.003663), FRAC_CONST(0.00311526), FRAC_CONST(0.00194932), FRAC_CONST(0.00078064), FRAC_CONST(0.000229727), FRAC_CONST(6.00925E-005), FRAC_CONST(1.51992E-005), FRAC_CONST(3.81096E-006), FRAC_CONST(9.53441E-007) }, |
319 | { FRAC_CONST(0.00194884), FRAC_CONST(0.00194742), FRAC_CONST(0.00194175), FRAC_CONST(0.00191939), FRAC_CONST(0.00183486), FRAC_CONST(0.00156006), FRAC_CONST(0.00097561), FRAC_CONST(0.000390472), FRAC_CONST(0.000114877), FRAC_CONST(3.00472E-005), FRAC_CONST(7.59965E-006), FRAC_CONST(1.90548E-006), FRAC_CONST(4.76721E-007) }, |
320 | { FRAC_CONST(0.000975372), FRAC_CONST(0.000974659), FRAC_CONST(0.000971817), FRAC_CONST(0.000960615), FRAC_CONST(0.000918274), FRAC_CONST(0.00078064), FRAC_CONST(0.000488043), FRAC_CONST(0.000195274), FRAC_CONST(5.74416E-005), FRAC_CONST(1.50238E-005), FRAC_CONST(3.79984E-006), FRAC_CONST(9.52743E-007), FRAC_CONST(2.3836E-007) }, |
321 | { FRAC_CONST(0.000487924), FRAC_CONST(0.000487567), FRAC_CONST(0.000486145), FRAC_CONST(0.000480538), FRAC_CONST(0.000459348), FRAC_CONST(0.000390472), FRAC_CONST(0.000244081), FRAC_CONST(9.76467E-005), FRAC_CONST(2.87216E-005), FRAC_CONST(7.51196E-006), FRAC_CONST(1.89992E-006), FRAC_CONST(4.76372E-007), FRAC_CONST(1.1918E-007) }, |
322 | { FRAC_CONST(0.000244021), FRAC_CONST(0.000243843), FRAC_CONST(0.000243132), FRAC_CONST(0.000240327), FRAC_CONST(0.000229727), FRAC_CONST(0.000195274), FRAC_CONST(0.000122055), FRAC_CONST(4.88257E-005), FRAC_CONST(1.4361E-005), FRAC_CONST(3.756E-006), FRAC_CONST(9.49963E-007), FRAC_CONST(2.38186E-007), FRAC_CONST(5.95901E-008) }, |
323 | { FRAC_CONST(0.000122026), FRAC_CONST(0.000121936), FRAC_CONST(0.000121581), FRAC_CONST(0.000120178), FRAC_CONST(0.000114877), FRAC_CONST(9.76467E-005), FRAC_CONST(6.10314E-005), FRAC_CONST(2.44135E-005), FRAC_CONST(7.18056E-006), FRAC_CONST(1.878E-006), FRAC_CONST(4.74982E-007), FRAC_CONST(1.19093E-007), FRAC_CONST(2.9795E-008) }, |
324 | { FRAC_CONST(6.10165E-005), FRAC_CONST(6.09719E-005), FRAC_CONST(6.0794E-005), FRAC_CONST(6.00925E-005), FRAC_CONST(5.74416E-005), FRAC_CONST(4.88257E-005), FRAC_CONST(3.05166E-005), FRAC_CONST(1.22069E-005), FRAC_CONST(3.59029E-006), FRAC_CONST(9.39002E-007), FRAC_CONST(2.37491E-007), FRAC_CONST(5.95465E-008), FRAC_CONST(1.48975E-008) }, |
325 | { FRAC_CONST(3.05092E-005), FRAC_CONST(3.04869E-005), FRAC_CONST(3.03979E-005), FRAC_CONST(3.00472E-005), FRAC_CONST(2.87216E-005), FRAC_CONST(2.44135E-005), FRAC_CONST(1.52586E-005), FRAC_CONST(6.10348E-006), FRAC_CONST(1.79515E-006), FRAC_CONST(4.69501E-007), FRAC_CONST(1.18745E-007), FRAC_CONST(2.97732E-008), FRAC_CONST(7.44876E-009) }, |
326 | { FRAC_CONST(1.52548E-005), FRAC_CONST(1.52437E-005), FRAC_CONST(1.51992E-005), FRAC_CONST(1.50238E-005), FRAC_CONST(1.4361E-005), FRAC_CONST(1.22069E-005), FRAC_CONST(7.62934E-006), FRAC_CONST(3.05175E-006), FRAC_CONST(8.97575E-007), FRAC_CONST(2.34751E-007), FRAC_CONST(5.93727E-008), FRAC_CONST(1.48866E-008), FRAC_CONST(3.72438E-009) }, |
327 | { FRAC_CONST(7.62747E-006), FRAC_CONST(7.62189E-006), FRAC_CONST(7.59965E-006), FRAC_CONST(7.51196E-006), FRAC_CONST(7.18056E-006), FRAC_CONST(6.10348E-006), FRAC_CONST(3.81468E-006), FRAC_CONST(1.52588E-006), FRAC_CONST(4.48788E-007), FRAC_CONST(1.17375E-007), FRAC_CONST(2.96864E-008), FRAC_CONST(7.44331E-009), FRAC_CONST(1.86219E-009) }, |
328 | { FRAC_CONST(3.81375E-006), FRAC_CONST(3.81096E-006), FRAC_CONST(3.79984E-006), FRAC_CONST(3.756E-006), FRAC_CONST(3.59029E-006), FRAC_CONST(3.05175E-006), FRAC_CONST(1.90734E-006), FRAC_CONST(7.62939E-007), FRAC_CONST(2.24394E-007), FRAC_CONST(5.86876E-008), FRAC_CONST(1.48432E-008), FRAC_CONST(3.72166E-009), FRAC_CONST(9.31095E-010) }, |
329 | { FRAC_CONST(1.90688E-006), FRAC_CONST(1.90548E-006), FRAC_CONST(1.89992E-006), FRAC_CONST(1.878E-006), FRAC_CONST(1.79515E-006), FRAC_CONST(1.52588E-006), FRAC_CONST(9.53673E-007), FRAC_CONST(3.8147E-007), FRAC_CONST(1.12197E-007), FRAC_CONST(2.93438E-008), FRAC_CONST(7.42159E-009), FRAC_CONST(1.86083E-009), FRAC_CONST(4.65548E-010) }, |
330 | { FRAC_CONST(9.53441E-007), FRAC_CONST(9.52743E-007), FRAC_CONST(9.49963E-007), FRAC_CONST(9.39002E-007), FRAC_CONST(8.97575E-007), FRAC_CONST(7.62939E-007), FRAC_CONST(4.76837E-007), FRAC_CONST(1.90735E-007), FRAC_CONST(5.60985E-008), FRAC_CONST(1.46719E-008), FRAC_CONST(3.71079E-009), FRAC_CONST(9.30414E-010), FRAC_CONST(2.32774E-010) }, |
331 | { FRAC_CONST(4.76721E-007), FRAC_CONST(4.76372E-007), FRAC_CONST(4.74982E-007), FRAC_CONST(4.69501E-007), FRAC_CONST(4.48788E-007), FRAC_CONST(3.8147E-007), FRAC_CONST(2.38419E-007), FRAC_CONST(9.53674E-008), FRAC_CONST(2.80492E-008), FRAC_CONST(7.33596E-009), FRAC_CONST(1.8554E-009), FRAC_CONST(4.65207E-010), FRAC_CONST(1.16387E-010) }, |
332 | { FRAC_CONST(2.3836E-007), FRAC_CONST(2.38186E-007), FRAC_CONST(2.37491E-007), FRAC_CONST(2.34751E-007), FRAC_CONST(2.24394E-007), FRAC_CONST(1.90735E-007), FRAC_CONST(1.19209E-007), FRAC_CONST(4.76837E-008), FRAC_CONST(1.40246E-008), FRAC_CONST(3.66798E-009), FRAC_CONST(9.27699E-010), FRAC_CONST(2.32603E-010), FRAC_CONST(5.81935E-011) }, |
333 | { FRAC_CONST(1.1918E-007), FRAC_CONST(1.19093E-007), FRAC_CONST(1.18745E-007), FRAC_CONST(1.17375E-007), FRAC_CONST(1.12197E-007), FRAC_CONST(9.53674E-008), FRAC_CONST(5.96046E-008), FRAC_CONST(2.38419E-008), FRAC_CONST(7.01231E-009), FRAC_CONST(1.83399E-009), FRAC_CONST(4.63849E-010), FRAC_CONST(1.16302E-010), FRAC_CONST(2.90967E-011) } |
334 | }; |
335 | |
336 | /* calculates Q/(1+Q) */ |
337 | /* [0..1] */ |
338 | static real_t calc_Q_div2(sbr_info *sbr, uint8_t ch, uint8_t m, uint8_t l) |
339 | { |
340 | if (sbr->bs_coupling) { |
341 | if ((sbr->Q[0][m][l] < 0 || sbr->Q[0][m][l] > 30) || |
342 | (sbr->Q[1][m][l] < 0 || sbr->Q[1][m][l] > 24 /* 2*panOffset(1) */)) { |
343 | return 0; |
344 | } else { |
345 | /* the pan parameter is always even */ |
346 | if (ch == 0) { |
347 | return Q_div2_tab_left[sbr->Q[0][m][l]][sbr->Q[1][m][l] >> 1]; |
348 | } else { |
349 | return Q_div2_tab_right[sbr->Q[0][m][l]][sbr->Q[1][m][l] >> 1]; |
350 | } |
351 | } |
352 | } else { |
353 | /* no coupling */ |
354 | if (sbr->Q[ch][m][l] < 0 || sbr->Q[ch][m][l] > 30) { |
355 | return 0; |
356 | } else { |
357 | return Q_div2_tab[sbr->Q[ch][m][l]]; |
358 | } |
359 | } |
360 | } |
361 | |
362 | static const real_t E_deq_tab[64] = { |
363 | 64.0f, 128.0f, 256.0f, 512.0f, 1024.0f, 2048.0f, 4096.0f, 8192.0f, |
364 | 16384.0f, 32768.0f, 65536.0f, 131072.0f, 262144.0f, 524288.0f, 1.04858E+006f, 2.09715E+006f, |
365 | 4.1943E+006f, 8.38861E+006f, 1.67772E+007f, 3.35544E+007f, 6.71089E+007f, 1.34218E+008f, 2.68435E+008f, 5.36871E+008f, |
366 | 1.07374E+009f, 2.14748E+009f, 4.29497E+009f, 8.58993E+009f, 1.71799E+010f, 3.43597E+010f, 6.87195E+010f, 1.37439E+011f, |
367 | 2.74878E+011f, 5.49756E+011f, 1.09951E+012f, 2.19902E+012f, 4.39805E+012f, 8.79609E+012f, 1.75922E+013f, 3.51844E+013f, |
368 | 7.03687E+013f, 1.40737E+014f, 2.81475E+014f, 5.6295E+014f, 1.1259E+015f, 2.2518E+015f, 4.5036E+015f, 9.0072E+015f, |
369 | 1.80144E+016f, 3.60288E+016f, 7.20576E+016f, 1.44115E+017f, 2.8823E+017f, 5.76461E+017f, 1.15292E+018f, 2.30584E+018f, |
370 | 4.61169E+018f, 9.22337E+018f, 1.84467E+019f, 3.68935E+019f, 7.3787E+019f, 1.47574E+020f, 2.95148E+020f, 5.90296E+020f |
371 | }; |
372 | |
373 | void envelope_noise_dequantisation(sbr_info *sbr, uint8_t ch) |
374 | { |
375 | if (sbr->bs_coupling == 0) { |
376 | int16_t exp; |
377 | uint8_t l, k; |
378 | uint8_t amp = (sbr->amp_res[ch]) ? 0 : 1; |
379 | |
380 | for (l = 0; l < sbr->L_E[ch]; l++) { |
381 | for (k = 0; k < sbr->n[sbr->f[ch][l]]; k++) { |
382 | /* +6 for the *64 and -10 for the /32 in the synthesis QMF (fixed) |
383 | * since this is a energy value: (x/32)^2 = (x^2)/1024 |
384 | */ |
385 | /* exp = (sbr->E[ch][k][l] >> amp) + 6; */ |
386 | exp = (sbr->E[ch][k][l] >> amp); |
387 | |
388 | if ((exp < 0) || (exp >= 64)) { |
389 | sbr->E_orig[ch][k][l] = 0; |
390 | } else { |
391 | sbr->E_orig[ch][k][l] = E_deq_tab[exp]; |
392 | |
393 | /* save half the table size at the cost of 1 multiply */ |
394 | if (amp && (sbr->E[ch][k][l] & 1)) { |
395 | sbr->E_orig[ch][k][l] = MUL_C(sbr->E_orig[ch][k][l], COEF_CONST(1.414213562)); |
396 | } |
397 | } |
398 | } |
399 | } |
400 | |
401 | for (l = 0; l < sbr->L_Q[ch]; l++) { |
402 | for (k = 0; k < sbr->N_Q; k++) { |
403 | sbr->Q_div[ch][k][l] = calc_Q_div(sbr, ch, k, l); |
404 | sbr->Q_div2[ch][k][l] = calc_Q_div2(sbr, ch, k, l); |
405 | } |
406 | } |
407 | } |
408 | } |
409 | |
410 | static const real_t E_pan_tab[25] = { |
411 | FRAC_CONST(0.000244081), FRAC_CONST(0.000488043), |
412 | FRAC_CONST(0.00097561), FRAC_CONST(0.00194932), |
413 | FRAC_CONST(0.00389105), FRAC_CONST(0.00775194), |
414 | FRAC_CONST(0.0153846), FRAC_CONST(0.030303), |
415 | FRAC_CONST(0.0588235), FRAC_CONST(0.111111), |
416 | FRAC_CONST(0.2), FRAC_CONST(0.333333), |
417 | FRAC_CONST(0.5), FRAC_CONST(0.666667), |
418 | FRAC_CONST(0.8), FRAC_CONST(0.888889), |
419 | FRAC_CONST(0.941176), FRAC_CONST(0.969697), |
420 | FRAC_CONST(0.984615), FRAC_CONST(0.992248), |
421 | FRAC_CONST(0.996109), FRAC_CONST(0.998051), |
422 | FRAC_CONST(0.999024), FRAC_CONST(0.999512), |
423 | FRAC_CONST(0.999756) |
424 | }; |
425 | |
426 | void unmap_envelope_noise(sbr_info *sbr) |
427 | { |
428 | real_t tmp; |
429 | int16_t exp0, exp1; |
430 | uint8_t l, k; |
431 | uint8_t amp0 = (sbr->amp_res[0]) ? 0 : 1; |
432 | uint8_t amp1 = (sbr->amp_res[1]) ? 0 : 1; |
433 | |
434 | for (l = 0; l < sbr->L_E[0]; l++) { |
435 | for (k = 0; k < sbr->n[sbr->f[0][l]]; k++) { |
436 | /* +6: * 64 ; +1: * 2 ; */ |
437 | exp0 = (sbr->E[0][k][l] >> amp0) + 1; |
438 | |
439 | /* UN_MAP removed: (x / 4096) same as (x >> 12) */ |
440 | /* E[1] is always even so no need for compensating the divide by 2 with |
441 | * an extra multiplication |
442 | */ |
443 | /* exp1 = (sbr->E[1][k][l] >> amp1) - 12; */ |
444 | exp1 = (sbr->E[1][k][l] >> amp1); |
445 | |
446 | if ((exp0 < 0) || (exp0 >= 64) || |
447 | (exp1 < 0) || (exp1 > 24)) { |
448 | sbr->E_orig[1][k][l] = 0; |
449 | sbr->E_orig[0][k][l] = 0; |
450 | } else { |
451 | tmp = E_deq_tab[exp0]; |
452 | if (amp0 && (sbr->E[0][k][l] & 1)) { |
453 | tmp = MUL_C(tmp, COEF_CONST(1.414213562)); |
454 | } |
455 | |
456 | /* panning */ |
457 | sbr->E_orig[0][k][l] = MUL_F(tmp, E_pan_tab[exp1]); |
458 | sbr->E_orig[1][k][l] = MUL_F(tmp, E_pan_tab[24 - exp1]); |
459 | } |
460 | } |
461 | } |
462 | |
463 | for (l = 0; l < sbr->L_Q[0]; l++) { |
464 | for (k = 0; k < sbr->N_Q; k++) { |
465 | sbr->Q_div[0][k][l] = calc_Q_div(sbr, 0, k, l); |
466 | sbr->Q_div[1][k][l] = calc_Q_div(sbr, 1, k, l); |
467 | sbr->Q_div2[0][k][l] = calc_Q_div2(sbr, 0, k, l); |
468 | sbr->Q_div2[1][k][l] = calc_Q_div2(sbr, 1, k, l); |
469 | } |
470 | } |
471 | } |
472 | |
473 | #endif |
474 | |
475 | #endif |
476 |