xref: /frameworks/av/media/libstagefright/codecs/amrwbenc/inc/isp_isf.tab

/*
 ** Copyright 2003-2010, VisualOn, Inc.
 **
 ** Licensed under the Apache License, Version 2.0 (the "License");
 ** you may not use this file except in compliance with the License.
 ** You may obtain a copy of the License at
 **
 **     http://www.apache.org/licenses/LICENSE-2.0
 **
 ** Unless required by applicable law or agreed to in writing, software
 ** distributed under the License is distributed on an "AS IS" BASIS,
 ** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 ** See the License for the specific language governing permissions and
 ** limitations under the License.
 */


/*-----------------------------------------------------*
 | Tables for function Isf_isp() and Isp_isf()         |
 *-----------------------------------------------------*/

/* table of cos(x) in Q15 */

static const Word16 table[129] = {
  32767,
  32758,  32729,  32679,  32610,  32522,  32413,  32286,  32138,
  31972,  31786,  31581,  31357,  31114,  30853,  30572,  30274,
  29957,  29622,  29269,  28899,  28511,  28106,  27684,  27246,
  26791,  26320,  25833,  25330,  24812,  24279,  23732,  23170,
  22595,  22006,  21403,  20788,  20160,  19520,  18868,  18205,
  17531,  16846,  16151,  15447,  14733,  14010,  13279,  12540,
  11793,  11039,  10279,   9512,   8740,   7962,   7180,   6393,
   5602,   4808,   4011,   3212,   2411,   1608,    804,      0,
   -804,  -1608,  -2411,  -3212,  -4011,  -4808,  -5602,  -6393,
  -7180,  -7962,  -8740,  -9512, -10279, -11039, -11793, -12540,
 -13279, -14010, -14733, -15447, -16151, -16846, -17531, -18205,
 -18868, -19520, -20160, -20788, -21403, -22006, -22595, -23170,
 -23732, -24279, -24812, -25330, -25833, -26320, -26791, -27246,
 -27684, -28106, -28511, -28899, -29269, -29622, -29957, -30274,
 -30572, -30853, -31114, -31357, -31581, -31786, -31972, -32138,
 -32286, -32413, -32522, -32610, -32679, -32729, -32758, -32768};

/* slope in Q11 used to compute y = acos(x) */

static const Word16 slope[128] = {
 -26214, -9039, -5243, -3799, -2979, -2405, -2064, -1771,
 -1579, -1409, -1279, -1170, -1079, -1004, -933, -880,
 -827, -783, -743, -708, -676, -647, -621, -599,
 -576, -557, -538, -521, -506, -492, -479, -466,
 -456, -445, -435, -426, -417, -410, -402, -395,
 -389, -383, -377, -372, -367, -363, -359, -355,
 -351, -348, -345, -342, -340, -337, -335, -333,
 -331, -330, -329, -328, -327, -326, -326, -326,
 -326, -326, -326, -327, -328, -329, -330, -331,
 -333, -335, -337, -340, -342, -345, -348, -351,
 -355, -359, -363, -367, -372, -377, -383, -389,
 -395, -402, -410, -417, -426, -435, -445, -456,
 -466, -479, -492, -506, -521, -538, -557, -576,
 -599, -621, -647, -676, -708, -743, -783, -827,
 -880, -933, -1004, -1079, -1170, -1279, -1409, -1579,
 -1771, -2064, -2405, -2979, -3799, -5243, -9039, -26214};