1/* Copyright (C) 2006 Jean-Marc Valin
2   File: window.c
3
4   Redistribution and use in source and binary forms, with or without
5   modification, are permitted provided that the following conditions
6   are met:
7
8   - Redistributions of source code must retain the above copyright
9   notice, this list of conditions and the following disclaimer.
10
11   - Redistributions in binary form must reproduce the above copyright
12   notice, this list of conditions and the following disclaimer in the
13   documentation and/or other materials provided with the distribution.
14
15   - Neither the name of the Xiph.org Foundation nor the names of its
16   contributors may be used to endorse or promote products derived from
17   this software without specific prior written permission.
18
19   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
20   ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
21   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
22   A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR
23   CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
24   EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
25   PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
26   PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
27   LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
28   NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
29   SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30*/
31
32#ifdef HAVE_CONFIG_H
33#include "config.h"
34#endif
35
36#include "arch.h"
37
38#ifdef FIXED_POINT
39const spx_word16_t lag_window[11] = {
40   16384, 16337, 16199, 15970, 15656, 15260, 14790, 14254, 13659, 13015, 12330
41};
42
43const spx_word16_t lpc_window[200] = {
441310, 1313, 1321, 1333, 1352, 1375, 1403, 1436,
451475, 1518, 1567, 1621, 1679, 1743, 1811, 1884,
461962, 2044, 2132, 2224, 2320, 2421, 2526, 2636,
472750, 2868, 2990, 3116, 3246, 3380, 3518, 3659,
483804, 3952, 4104, 4259, 4417, 4578, 4742, 4909,
495079, 5251, 5425, 5602, 5781, 5963, 6146, 6331,
506518, 6706, 6896, 7087, 7280, 7473, 7668, 7863,
518059, 8256, 8452, 8650, 8847, 9044, 9241, 9438,
529635, 9831, 10026, 10220, 10414, 10606, 10797, 10987,
5311176, 11363, 11548, 11731, 11912, 12091, 12268, 12443,
5412615, 12785, 12952, 13116, 13277, 13435, 13590, 13742,
5513890, 14035, 14176, 14314, 14448, 14578, 14704, 14826,
5614944, 15058, 15168, 15273, 15374, 15470, 15562, 15649,
5715732, 15810, 15883, 15951, 16015, 16073, 16127, 16175,
5816219, 16257, 16291, 16319, 16342, 16360, 16373, 16381,
5916384, 16384, 16384, 16384, 16384, 16384, 16384, 16384,
6016384, 16384, 16384, 16384, 16384, 16384, 16384, 16384,
6116384, 16384, 16384, 16384, 16384, 16384, 16384, 16384,
6216384, 16384, 16384, 16384, 16384, 16384, 16384, 16384,
6316384, 16384, 16384, 16384, 16384, 16384, 16384, 16384,
6416384, 16384, 16384, 16384, 16384, 16384, 16384, 16384,
6516384, 16384, 16384, 16361, 16294, 16183, 16028, 15830,
6615588, 15304, 14979, 14613, 14207, 13763, 13282, 12766,
6712215, 11631, 11016, 10373, 9702, 9007, 8289, 7551,
686797, 6028, 5251, 4470, 3695, 2943, 2248, 1696
69};
70#else
71const spx_word16_t lag_window[11] = {
72   1.00000, 0.99716, 0.98869, 0.97474, 0.95554, 0.93140, 0.90273, 0.86998, 0.83367, 0.79434, 0.75258
73};
74
75const spx_word16_t lpc_window[200] = {
76   0.080000f, 0.080158f, 0.080630f, 0.081418f, 0.082520f, 0.083935f, 0.085663f, 0.087703f,
77   0.090052f, 0.092710f, 0.095674f, 0.098943f, 0.102514f, 0.106385f, 0.110553f, 0.115015f,
78   0.119769f, 0.124811f, 0.130137f, 0.135744f, 0.141628f, 0.147786f, 0.154212f, 0.160902f,
79   0.167852f, 0.175057f, 0.182513f, 0.190213f, 0.198153f, 0.206328f, 0.214731f, 0.223357f,
80   0.232200f, 0.241254f, 0.250513f, 0.259970f, 0.269619f, 0.279453f, 0.289466f, 0.299651f,
81   0.310000f, 0.320507f, 0.331164f, 0.341965f, 0.352901f, 0.363966f, 0.375151f, 0.386449f,
82   0.397852f, 0.409353f, 0.420943f, 0.432615f, 0.444361f, 0.456172f, 0.468040f, 0.479958f,
83   0.491917f, 0.503909f, 0.515925f, 0.527959f, 0.540000f, 0.552041f, 0.564075f, 0.576091f,
84   0.588083f, 0.600042f, 0.611960f, 0.623828f, 0.635639f, 0.647385f, 0.659057f, 0.670647f,
85   0.682148f, 0.693551f, 0.704849f, 0.716034f, 0.727099f, 0.738035f, 0.748836f, 0.759493f,
86   0.770000f, 0.780349f, 0.790534f, 0.800547f, 0.810381f, 0.820030f, 0.829487f, 0.838746f,
87   0.847800f, 0.856643f, 0.865269f, 0.873672f, 0.881847f, 0.889787f, 0.897487f, 0.904943f,
88   0.912148f, 0.919098f, 0.925788f, 0.932214f, 0.938372f, 0.944256f, 0.949863f, 0.955189f,
89   0.960231f, 0.964985f, 0.969447f, 0.973615f, 0.977486f, 0.981057f, 0.984326f, 0.987290f,
90   0.989948f, 0.992297f, 0.994337f, 0.996065f, 0.997480f, 0.998582f, 0.999370f, 0.999842f,
91   1.000000f, 1.000000f, 1.000000f, 1.000000f, 1.000000f, 1.000000f, 1.000000f, 1.000000f,
92   1.000000f, 1.000000f, 1.000000f, 1.000000f, 1.000000f, 1.000000f, 1.000000f, 1.000000f,
93   1.000000f, 1.000000f, 1.000000f, 1.000000f, 1.000000f, 1.000000f, 1.000000f, 1.000000f,
94   1.000000f, 1.000000f, 1.000000f, 1.000000f, 1.000000f, 1.000000f, 1.000000f, 1.000000f,
95   1.000000f, 1.000000f, 1.000000f, 1.000000f, 1.000000f, 1.000000f, 1.000000f, 1.000000f,
96   1.000000f, 1.000000f, 1.000000f, 1.000000f, 1.000000f, 1.000000f, 1.000000f, 1.000000f,
97   1.000000f, 1.000000f, 1.000000f, 0.998640f, 0.994566f, 0.987787f, 0.978324f, 0.966203f,
98   0.951458f, 0.934131f, 0.914270f, 0.891931f, 0.867179f, 0.840084f, 0.810723f, 0.779182f,
99   0.745551f, 0.709930f, 0.672424f, 0.633148f, 0.592223f, 0.549781f, 0.505964f, 0.460932f,
100   0.414863f, 0.367968f, 0.320511f, 0.272858f, 0.225569f, 0.179655f, 0.137254f, 0.103524f
101};
102#endif
103