• Home
  • Line#
  • Scopes#
  • Navigate#
  • Raw
  • Download
1 /***********************************************************************
2 Copyright (c) 2006-2011, Skype Limited. All rights reserved.
3 Redistribution and use in source and binary forms, with or without
4 modification, are permitted provided that the following conditions
5 are met:
6 - Redistributions of source code must retain the above copyright notice,
7 this list of conditions and the following disclaimer.
8 - Redistributions in binary form must reproduce the above copyright
9 notice, this list of conditions and the following disclaimer in the
10 documentation and/or other materials provided with the distribution.
11 - Neither the name of Internet Society, IETF or IETF Trust, nor the
12 names of specific contributors, may be used to endorse or promote
13 products derived from this software without specific prior written
14 permission.
15 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
16 AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17 IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18 ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
19 LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
20 CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
21 SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
22 INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
23 CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
24 ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
25 POSSIBILITY OF SUCH DAMAGE.
26 ***********************************************************************/
27 
28 #ifdef HAVE_CONFIG_H
29 #include "config.h"
30 #endif
31 
32 #include "tables.h"
33 
34 const opus_uint8 silk_LTP_per_index_iCDF[3] = {
35        179,     99,      0
36 };
37 
38 static const opus_uint8 silk_LTP_gain_iCDF_0[8] = {
39         71,     56,     43,     30,     21,     12,      6,      0
40 };
41 
42 static const opus_uint8 silk_LTP_gain_iCDF_1[16] = {
43        199,    165,    144,    124,    109,     96,     84,     71,
44         61,     51,     42,     32,     23,     15,      8,      0
45 };
46 
47 static const opus_uint8 silk_LTP_gain_iCDF_2[32] = {
48        241,    225,    211,    199,    187,    175,    164,    153,
49        142,    132,    123,    114,    105,     96,     88,     80,
50         72,     64,     57,     50,     44,     38,     33,     29,
51         24,     20,     16,     12,      9,      5,      2,      0
52 };
53 
54 static const opus_uint8 silk_LTP_gain_BITS_Q5_0[8] = {
55         15,    131,    138,    138,    155,    155,    173,    173
56 };
57 
58 static const opus_uint8 silk_LTP_gain_BITS_Q5_1[16] = {
59         69,     93,    115,    118,    131,    138,    141,    138,
60        150,    150,    155,    150,    155,    160,    166,    160
61 };
62 
63 static const opus_uint8 silk_LTP_gain_BITS_Q5_2[32] = {
64        131,    128,    134,    141,    141,    141,    145,    145,
65        145,    150,    155,    155,    155,    155,    160,    160,
66        160,    160,    166,    166,    173,    173,    182,    192,
67        182,    192,    192,    192,    205,    192,    205,    224
68 };
69 
70 const opus_uint8 * const silk_LTP_gain_iCDF_ptrs[NB_LTP_CBKS] = {
71     silk_LTP_gain_iCDF_0,
72     silk_LTP_gain_iCDF_1,
73     silk_LTP_gain_iCDF_2
74 };
75 
76 const opus_uint8 * const silk_LTP_gain_BITS_Q5_ptrs[NB_LTP_CBKS] = {
77     silk_LTP_gain_BITS_Q5_0,
78     silk_LTP_gain_BITS_Q5_1,
79     silk_LTP_gain_BITS_Q5_2
80 };
81 
82 static const opus_int8 silk_LTP_gain_vq_0[8][5] =
83 {
84 {
85          4,      6,     24,      7,      5
86 },
87 {
88          0,      0,      2,      0,      0
89 },
90 {
91         12,     28,     41,     13,     -4
92 },
93 {
94         -9,     15,     42,     25,     14
95 },
96 {
97          1,     -2,     62,     41,     -9
98 },
99 {
100        -10,     37,     65,     -4,      3
101 },
102 {
103         -6,      4,     66,      7,     -8
104 },
105 {
106         16,     14,     38,     -3,     33
107 }
108 };
109 
110 static const opus_int8 silk_LTP_gain_vq_1[16][5] =
111 {
112 {
113         13,     22,     39,     23,     12
114 },
115 {
116         -1,     36,     64,     27,     -6
117 },
118 {
119         -7,     10,     55,     43,     17
120 },
121 {
122          1,      1,      8,      1,      1
123 },
124 {
125          6,    -11,     74,     53,     -9
126 },
127 {
128        -12,     55,     76,    -12,      8
129 },
130 {
131         -3,      3,     93,     27,     -4
132 },
133 {
134         26,     39,     59,      3,     -8
135 },
136 {
137          2,      0,     77,     11,      9
138 },
139 {
140         -8,     22,     44,     -6,      7
141 },
142 {
143         40,      9,     26,      3,      9
144 },
145 {
146         -7,     20,    101,     -7,      4
147 },
148 {
149          3,     -8,     42,     26,      0
150 },
151 {
152        -15,     33,     68,      2,     23
153 },
154 {
155         -2,     55,     46,     -2,     15
156 },
157 {
158          3,     -1,     21,     16,     41
159 }
160 };
161 
162 static const opus_int8 silk_LTP_gain_vq_2[32][5] =
163 {
164 {
165         -6,     27,     61,     39,      5
166 },
167 {
168        -11,     42,     88,      4,      1
169 },
170 {
171         -2,     60,     65,      6,     -4
172 },
173 {
174         -1,     -5,     73,     56,      1
175 },
176 {
177         -9,     19,     94,     29,     -9
178 },
179 {
180          0,     12,     99,      6,      4
181 },
182 {
183          8,    -19,    102,     46,    -13
184 },
185 {
186          3,      2,     13,      3,      2
187 },
188 {
189          9,    -21,     84,     72,    -18
190 },
191 {
192        -11,     46,    104,    -22,      8
193 },
194 {
195         18,     38,     48,     23,      0
196 },
197 {
198        -16,     70,     83,    -21,     11
199 },
200 {
201          5,    -11,    117,     22,     -8
202 },
203 {
204         -6,     23,    117,    -12,      3
205 },
206 {
207          3,     -8,     95,     28,      4
208 },
209 {
210        -10,     15,     77,     60,    -15
211 },
212 {
213         -1,      4,    124,      2,     -4
214 },
215 {
216          3,     38,     84,     24,    -25
217 },
218 {
219          2,     13,     42,     13,     31
220 },
221 {
222         21,     -4,     56,     46,     -1
223 },
224 {
225         -1,     35,     79,    -13,     19
226 },
227 {
228         -7,     65,     88,     -9,    -14
229 },
230 {
231         20,      4,     81,     49,    -29
232 },
233 {
234         20,      0,     75,      3,    -17
235 },
236 {
237          5,     -9,     44,     92,     -8
238 },
239 {
240          1,     -3,     22,     69,     31
241 },
242 {
243         -6,     95,     41,    -12,      5
244 },
245 {
246         39,     67,     16,     -4,      1
247 },
248 {
249          0,     -6,    120,     55,    -36
250 },
251 {
252        -13,     44,    122,      4,    -24
253 },
254 {
255         81,      5,     11,      3,      7
256 },
257 {
258          2,      0,      9,     10,     88
259 }
260 };
261 
262 const opus_int8 * const silk_LTP_vq_ptrs_Q7[NB_LTP_CBKS] = {
263     (opus_int8 *)&silk_LTP_gain_vq_0[0][0],
264     (opus_int8 *)&silk_LTP_gain_vq_1[0][0],
265     (opus_int8 *)&silk_LTP_gain_vq_2[0][0]
266 };
267 
268 /* Maximum frequency-dependent response of the pitch taps above,
269    computed as max(abs(freqz(taps))) */
270 static const opus_uint8 silk_LTP_gain_vq_0_gain[8] = {
271       46,      2,     90,     87,     93,     91,     82,     98
272 };
273 
274 static const opus_uint8 silk_LTP_gain_vq_1_gain[16] = {
275      109,    120,    118,     12,    113,    115,    117,    119,
276       99,     59,     87,    111,     63,    111,    112,     80
277 };
278 
279 static const opus_uint8 silk_LTP_gain_vq_2_gain[32] = {
280      126,    124,    125,    124,    129,    121,    126,     23,
281      132,    127,    127,    127,    126,    127,    122,    133,
282      130,    134,    101,    118,    119,    145,    126,     86,
283      124,    120,    123,    119,    170,    173,    107,    109
284 };
285 
286 const opus_uint8 * const silk_LTP_vq_gain_ptrs_Q7[NB_LTP_CBKS] = {
287     &silk_LTP_gain_vq_0_gain[0],
288     &silk_LTP_gain_vq_1_gain[0],
289     &silk_LTP_gain_vq_2_gain[0]
290 };
291 
292 const opus_int8 silk_LTP_vq_sizes[NB_LTP_CBKS] = {
293     8, 16, 32
294 };
295