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/*
* THIS FILE IS GENERATED AUTOMATICALLY BY ./gentbl, DO NOT EDIT!
*/
/*
* small cosine table in U8 format
*/
#define OFFSCOSTABBITS 6
#define OFFSCOSTABSIZE (1<<OFFSCOSTABBITS)
static unsigned char offscostab[OFFSCOSTABSIZE] = {
255, 254, 252, 249, 245, 240, 233, 226,
217, 208, 198, 187, 176, 164, 152, 140,
128, 115, 103, 91, 79, 68, 57, 47,
38, 29, 22, 15, 10, 6, 3, 1,
1, 1, 3, 6, 10, 15, 22, 29,
38, 47, 57, 68, 79, 91, 103, 115,
127, 140, 152, 164, 176, 187, 198, 208,
217, 226, 233, 240, 245, 249, 252, 254
};
#define OFFSCOS(x) offscostab[((x)>>10)&0x3f]
/*
* more accurate cosine table
*/
static const short costab[64] = {
32767, 32609, 32137, 31356, 30272, 28897, 27244, 25329,
23169, 20787, 18204, 15446, 12539, 9511, 6392, 3211,
0, -3211, -6392, -9511, -12539, -15446, -18204, -20787,
-23169, -25329, -27244, -28897, -30272, -31356, -32137, -32609,
-32767, -32609, -32137, -31356, -30272, -28897, -27244, -25329,
-23169, -20787, -18204, -15446, -12539, -9511, -6392, -3211,
0, 3211, 6392, 9511, 12539, 15446, 18204, 20787,
23169, 25329, 27244, 28897, 30272, 31356, 32137, 32609
};
#define COS(x) costab[((x)>>10)&0x3f]
#define SIN(x) COS((x)+0xc000)
/*
* afsk2666 specific tables
*/
#define AFSK26_DEMCORRLEN 12
#define AFSK26_SAMPLERATE 16000
static const unsigned int afsk26_carfreq[2] = { 0x2000, 0x3555 };
static const struct {
int i[12];
int q[12];
} afsk26_dem_tables[2][2] = {
{
{{ 1, 7, -18, -73, -100, -47, 47, 100, 73, 18, -7, -1 }, { 0, 17, 43, 30, -41, -115, -115, -41, 30, 43, 17, 0 }},
#define AFSK26_DEM_SUM_I_0_0 0
#define AFSK26_DEM_SUM_Q_0_0 -132
{{ 1, -7, -46, -10, 100, 76, -75, -100, 10, 46, 7, -1 }, { 1, 17, -6, -79, -41, 99, 99, -41, -79, -6, 17, 1 }}
#define AFSK26_DEM_SUM_I_0_1 1
#define AFSK26_DEM_SUM_Q_0_1 -18
},
{
{{ 8, 22, 0, -67, -118, -89, 0, 67, 63, 22, 0, 0 }, { 0, 22, 63, 67, 0, -89, -118, -67, 0, 22, 8, 0 }},
#define AFSK26_DEM_SUM_I_1_0 -92
#define AFSK26_DEM_SUM_Q_1_0 -92
{{ 8, 8, -54, -67, 59, 122, 0, -91, -31, 22, 7, 0 }, { 0, 30, 31, -67, -102, 32, 118, 24, -54, -22, 4, 0 }}
#define AFSK26_DEM_SUM_I_1_1 -17
#define AFSK26_DEM_SUM_Q_1_1 -6
}
};
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