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Commit 1074e5f0 authored by Jean-Marc Valin's avatar Jean-Marc Valin
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Properly handle constant tables 

LPCNet code should now be fully reentrant
parent 2fc6c71d
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dnn/Makefile.am
+ 2
− 1
View file @ 1074e5f0
...@@ -32,6 +32,7 @@ liblpcnet_la_SOURCES = \ ...@@ -32,6 +32,7 @@ liblpcnet_la_SOURCES = \
lpcnet.c \ lpcnet.c \
lpcnet_dec.c \ lpcnet_dec.c \
lpcnet_enc.c \ lpcnet_enc.c \
lpcnet_tables.c \
nnet.c \ nnet.c \
nnet_data.c \ nnet_data.c \
plc_data.c \ plc_data.c \
...@@ -56,7 +57,7 @@ lpcnet_demo_LDADD = liblpcnet.la ...@@ -56,7 +57,7 @@ lpcnet_demo_LDADD = liblpcnet.la
#dump_data_SOURCES = dump_data.c #dump_data_SOURCES = dump_data.c
#dump_data_LDADD = $(DUMP_OBJ) $(LIBM) #dump_data_LDADD = $(DUMP_OBJ) $(LIBM)
dump_data_SOURCES = common.c dump_data.c burg.c freq.c kiss_fft.c pitch.c lpcnet_dec.c lpcnet_enc.c ceps_codebooks.c dump_data_SOURCES = common.c dump_data.c burg.c freq.c kiss_fft.c pitch.c lpcnet_dec.c lpcnet_enc.c lpcnet_tables.c ceps_codebooks.c
dump_data_LDADD = $(LIBM) dump_data_LDADD = $(LIBM)
dump_data_CFLAGS = $(AM_CFLAGS) dump_data_CFLAGS = $(AM_CFLAGS)
......
dnn/dump_lpcnet_tables.c 0 → 100644
+ 96
− 0
View file @ 1074e5f0
/* Copyright (c) 2017-2018 Mozilla
Copyright (c) 2023 Amazon */
/*
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:
- Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
- Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR
CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <math.h>
#include <stdio.h>
#include "freq.h"
#include "kiss_fft.h"
int main(void) {
int i;
FILE *file;
kiss_fft_state *kfft;
float half_window[OVERLAP_SIZE];
float dct_table[NB_BANDS*NB_BANDS];
file=fopen("lpcnet_tables.c", "wb");
fprintf(file, "/* The contents of this file was automatically generated by dump_lpcnet_tables.c*/\n\n");
fprintf(file, "#include \"kiss_fft.h\"\n\n");
kfft = opus_fft_alloc_twiddles(WINDOW_SIZE, NULL, NULL, NULL, 0);
fprintf(file, "static const arch_fft_state arch_fft = {0, NULL};\n\n");
fprintf (file, "static const opus_int16 fft_bitrev[%d] = {\n", kfft->nfft);
for (i=0;i<kfft->nfft;i++)
fprintf (file, "%d,%c", kfft->bitrev[i],(i+16)%15==0?'\n':' ');
fprintf (file, "};\n\n");
fprintf (file, "static const kiss_twiddle_cpx fft_twiddles[%d] = {\n", kfft->nfft);
for (i=0;i<kfft->nfft;i++)
fprintf (file, "{%#0.9gf, %#0.9gf},%c", kfft->twiddles[i].r, kfft->twiddles[i].i,(i+3)%2==0?'\n':' ');
fprintf (file, "};\n\n");
fprintf(file, "const kiss_fft_state kfft = {\n");
fprintf(file, "%d, /* nfft */\n", kfft->nfft);
fprintf(file, "%#0.8gf, /* scale */\n", kfft->scale);
fprintf(file, "%d, /* shift */\n", kfft->shift);
fprintf(file, "{");
for (i=0;i<2*MAXFACTORS;i++) {
fprintf(file, "%d, ", kfft->factors[i]);
}
fprintf(file, "}, /* factors */\n");
fprintf(file, "fft_bitrev, /* bitrev*/\n");
fprintf(file, "fft_twiddles, /* twiddles*/\n");
fprintf(file, "(arch_fft_state *)&arch_fft, /* arch_fft*/\n");
fprintf(file, "};\n\n");
for (i=0;i<OVERLAP_SIZE;i++)
half_window[i] = sin(.5*M_PI*sin(.5*M_PI*(i+.5)/OVERLAP_SIZE) * sin(.5*M_PI*(i+.5)/OVERLAP_SIZE));
fprintf(file, "const float half_window[] = {\n");
for (i=0;i<OVERLAP_SIZE;i++)
fprintf (file, "%#0.9gf,%c", half_window[i],(i+6)%5==0?'\n':' ');
fprintf(file, "};\n\n");
for (i=0;i<NB_BANDS;i++) {
int j;
for (j=0;j<NB_BANDS;j++) {
dct_table[i*NB_BANDS + j] = cos((i+.5)*j*M_PI/NB_BANDS);
if (j==0) dct_table[i*NB_BANDS + j] *= sqrt(.5);
}
}
fprintf(file, "const float dct_table[] = {\n");
for (i=0;i<NB_BANDS*NB_BANDS;i++)
fprintf (file, "%#0.9gf,%c", dct_table[i],(i+6)%5==0?'\n':' ');
fprintf(file, "};\n");
fclose(file);
return 0;
}
\ No newline at end of file
dnn/freq.c
+ 10
− 34
View file @ 1074e5f0
...@@ -51,12 +51,10 @@ static const float compensation[] = { ...@@ -51,12 +51,10 @@ static const float compensation[] = {
0.8f, 1.f, 1.f, 1.f, 1.f, 1.f, 1.f, 1.f, 0.666667f, 0.5f, 0.5f, 0.5f, 0.333333f, 0.25f, 0.25f, 0.2f, 0.166667f, 0.173913f 0.8f, 1.f, 1.f, 1.f, 1.f, 1.f, 1.f, 1.f, 0.666667f, 0.5f, 0.5f, 0.5f, 0.333333f, 0.25f, 0.25f, 0.2f, 0.166667f, 0.173913f
}; };
typedef struct {
int init; extern const kiss_fft_state kfft;
kiss_fft_state *kfft; extern const float half_window[OVERLAP_SIZE];
float half_window[OVERLAP_SIZE]; extern const float dct_table[NB_BANDS*NB_BANDS];
float dct_table[NB_BANDS*NB_BANDS];
} CommonState;
void compute_band_energy_inverse(float *bandE, const kiss_fft_cpx *X) { void compute_band_energy_inverse(float *bandE, const kiss_fft_cpx *X) {
...@@ -241,32 +239,14 @@ void interp_band_gain(float *g, const float *bandE) { ...@@ -241,32 +239,14 @@ void interp_band_gain(float *g, const float *bandE) {
} }
} }
CommonState common;
static void check_init(void) {
int i;
if (common.init) return;
common.kfft = opus_fft_alloc_twiddles(WINDOW_SIZE, NULL, NULL, NULL, 0);
for (i=0;i<OVERLAP_SIZE;i++)
common.half_window[i] = sin(.5*M_PI*sin(.5*M_PI*(i+.5)/OVERLAP_SIZE) * sin(.5*M_PI*(i+.5)/OVERLAP_SIZE));
for (i=0;i<NB_BANDS;i++) {
int j;
for (j=0;j<NB_BANDS;j++) {
common.dct_table[i*NB_BANDS + j] = cos((i+.5)*j*M_PI/NB_BANDS);
if (j==0) common.dct_table[i*NB_BANDS + j] *= sqrt(.5);
}
}
common.init = 1;
}
void dct(float *out, const float *in) { void dct(float *out, const float *in) {
int i; int i;
check_init();
for (i=0;i<NB_BANDS;i++) { for (i=0;i<NB_BANDS;i++) {
int j; int j;
float sum = 0; float sum = 0;
for (j=0;j<NB_BANDS;j++) { for (j=0;j<NB_BANDS;j++) {
sum += in[j] * common.dct_table[j*NB_BANDS + i]; sum += in[j] * dct_table[j*NB_BANDS + i];
} }
out[i] = sum*sqrt(2./NB_BANDS); out[i] = sum*sqrt(2./NB_BANDS);
} }
...@@ -274,12 +254,11 @@ void dct(float *out, const float *in) { ...@@ -274,12 +254,11 @@ void dct(float *out, const float *in) {
void idct(float *out, const float *in) { void idct(float *out, const float *in) {
int i; int i;
check_init();
for (i=0;i<NB_BANDS;i++) { for (i=0;i<NB_BANDS;i++) {
int j; int j;
float sum = 0; float sum = 0;
for (j=0;j<NB_BANDS;j++) { for (j=0;j<NB_BANDS;j++) {
sum += in[j] * common.dct_table[i*NB_BANDS + j]; sum += in[j] * dct_table[i*NB_BANDS + j];
} }
out[i] = sum*sqrt(2./NB_BANDS); out[i] = sum*sqrt(2./NB_BANDS);
} }
...@@ -289,12 +268,11 @@ void forward_transform(kiss_fft_cpx *out, const float *in) { ...@@ -289,12 +268,11 @@ void forward_transform(kiss_fft_cpx *out, const float *in) {
int i; int i;
kiss_fft_cpx x[WINDOW_SIZE]; kiss_fft_cpx x[WINDOW_SIZE];
kiss_fft_cpx y[WINDOW_SIZE]; kiss_fft_cpx y[WINDOW_SIZE];
check_init();
for (i=0;i<WINDOW_SIZE;i++) { for (i=0;i<WINDOW_SIZE;i++) {
x[i].r = in[i]; x[i].r = in[i];
x[i].i = 0; x[i].i = 0;
} }
opus_fft(common.kfft, x, y, 0); opus_fft(&kfft, x, y, 0);
for (i=0;i<FREQ_SIZE;i++) { for (i=0;i<FREQ_SIZE;i++) {
out[i] = y[i]; out[i] = y[i];
} }
...@@ -304,7 +282,6 @@ void inverse_transform(float *out, const kiss_fft_cpx *in) { ...@@ -304,7 +282,6 @@ void inverse_transform(float *out, const kiss_fft_cpx *in) {
int i; int i;
kiss_fft_cpx x[WINDOW_SIZE]; kiss_fft_cpx x[WINDOW_SIZE];
kiss_fft_cpx y[WINDOW_SIZE]; kiss_fft_cpx y[WINDOW_SIZE];
check_init();
for (i=0;i<FREQ_SIZE;i++) { for (i=0;i<FREQ_SIZE;i++) {
x[i] = in[i]; x[i] = in[i];
} }
...@@ -312,7 +289,7 @@ void inverse_transform(float *out, const kiss_fft_cpx *in) { ...@@ -312,7 +289,7 @@ void inverse_transform(float *out, const kiss_fft_cpx *in) {
x[i].r = x[WINDOW_SIZE - i].r; x[i].r = x[WINDOW_SIZE - i].r;
x[i].i = -x[WINDOW_SIZE - i].i; x[i].i = -x[WINDOW_SIZE - i].i;
} }
opus_fft(common.kfft, x, y, 0); opus_fft(&kfft, x, y, 0);
/* output in reverse order for IFFT. */ /* output in reverse order for IFFT. */
out[0] = WINDOW_SIZE*y[0].r; out[0] = WINDOW_SIZE*y[0].r;
for (i=1;i<WINDOW_SIZE;i++) { for (i=1;i<WINDOW_SIZE;i++) {
...@@ -369,10 +346,9 @@ float lpc_from_cepstrum(float *lpc, const float *cepstrum) ...@@ -369,10 +346,9 @@ float lpc_from_cepstrum(float *lpc, const float *cepstrum)
void apply_window(float *x) { void apply_window(float *x) {
int i; int i;
check_init();
for (i=0;i<OVERLAP_SIZE;i++) { for (i=0;i<OVERLAP_SIZE;i++) {
x[i] *= common.half_window[i]; x[i] *= half_window[i];
x[WINDOW_SIZE - 1 - i] *= common.half_window[i]; x[WINDOW_SIZE - 1 - i] *= half_window[i];
} }
} }
dnn/lpcnet_tables.c 0 → 100644
+ 304
− 0
View file @ 1074e5f0
/* The contents of this file was automatically generated by dump_lpcnet_tables.c*/
#include "kiss_fft.h"
static const arch_fft_state arch_fft = {0, NULL};
static const opus_int16 fft_bitrev[320] = {
0, 64, 128, 192, 256, 16, 80, 144, 208, 272, 32, 96, 160, 224, 288,
48, 112, 176, 240, 304, 4, 68, 132, 196, 260, 20, 84, 148, 212, 276,
36, 100, 164, 228, 292, 52, 116, 180, 244, 308, 8, 72, 136, 200, 264,
24, 88, 152, 216, 280, 40, 104, 168, 232, 296, 56, 120, 184, 248, 312,
12, 76, 140, 204, 268, 28, 92, 156, 220, 284, 44, 108, 172, 236, 300,
60, 124, 188, 252, 316, 1, 65, 129, 193, 257, 17, 81, 145, 209, 273,
33, 97, 161, 225, 289, 49, 113, 177, 241, 305, 5, 69, 133, 197, 261,
21, 85, 149, 213, 277, 37, 101, 165, 229, 293, 53, 117, 181, 245, 309,
9, 73, 137, 201, 265, 25, 89, 153, 217, 281, 41, 105, 169, 233, 297,
57, 121, 185, 249, 313, 13, 77, 141, 205, 269, 29, 93, 157, 221, 285,
45, 109, 173, 237, 301, 61, 125, 189, 253, 317, 2, 66, 130, 194, 258,
18, 82, 146, 210, 274, 34, 98, 162, 226, 290, 50, 114, 178, 242, 306,
6, 70, 134, 198, 262, 22, 86, 150, 214, 278, 38, 102, 166, 230, 294,
54, 118, 182, 246, 310, 10, 74, 138, 202, 266, 26, 90, 154, 218, 282,
42, 106, 170, 234, 298, 58, 122, 186, 250, 314, 14, 78, 142, 206, 270,
30, 94, 158, 222, 286, 46, 110, 174, 238, 302, 62, 126, 190, 254, 318,
3, 67, 131, 195, 259, 19, 83, 147, 211, 275, 35, 99, 163, 227, 291,
51, 115, 179, 243, 307, 7, 71, 135, 199, 263, 23, 87, 151, 215, 279,
39, 103, 167, 231, 295, 55, 119, 183, 247, 311, 11, 75, 139, 203, 267,
27, 91, 155, 219, 283, 43, 107, 171, 235, 299, 59, 123, 187, 251, 315,
15, 79, 143, 207, 271, 31, 95, 159, 223, 287, 47, 111, 175, 239, 303,
63, 127, 191, 255, 319, };
static const kiss_twiddle_cpx fft_twiddles[320] = {
{1.00000000f, -0.00000000f}, {0.999807239f, -0.0196336918f},
{0.999229014f, -0.0392598175f}, {0.998265624f, -0.0588708036f},
{0.996917307f, -0.0784590989f}, {0.995184720f, -0.0980171412f},
{0.993068457f, -0.117537394f}, {0.990569353f, -0.137012348f},
{0.987688363f, -0.156434461f}, {0.984426558f, -0.175796285f},
{0.980785251f, -0.195090324f}, {0.976765871f, -0.214309156f},
{0.972369909f, -0.233445361f}, {0.967599094f, -0.252491564f},
{0.962455213f, -0.271440446f}, {0.956940353f, -0.290284663f},
{0.951056540f, -0.309017003f}, {0.944806039f, -0.327630192f},
{0.938191354f, -0.346117049f}, {0.931214929f, -0.364470512f},
{0.923879504f, -0.382683426f}, {0.916187942f, -0.400748819f},
{0.908143163f, -0.418659747f}, {0.899748266f, -0.436409235f},
{0.891006529f, -0.453990489f}, {0.881921291f, -0.471396744f},
{0.872496009f, -0.488621235f}, {0.862734377f, -0.505657375f},
{0.852640152f, -0.522498548f}, {0.842217207f, -0.539138317f},
{0.831469595f, -0.555570245f}, {0.820401430f, -0.571787953f},
{0.809017003f, -0.587785244f}, {0.797320664f, -0.603555918f},
{0.785316944f, -0.619093955f}, {0.773010433f, -0.634393275f},
{0.760405958f, -0.649448037f}, {0.747508347f, -0.664252460f},
{0.734322488f, -0.678800762f}, {0.720853567f, -0.693087339f},
{0.707106769f, -0.707106769f}, {0.693087339f, -0.720853567f},
{0.678800762f, -0.734322488f}, {0.664252460f, -0.747508347f},
{0.649448037f, -0.760405958f}, {0.634393275f, -0.773010433f},
{0.619093955f, -0.785316944f}, {0.603555918f, -0.797320664f},
{0.587785244f, -0.809017003f}, {0.571787953f, -0.820401430f},
{0.555570245f, -0.831469595f}, {0.539138317f, -0.842217207f},
{0.522498548f, -0.852640152f}, {0.505657375f, -0.862734377f},
{0.488621235f, -0.872496009f}, {0.471396744f, -0.881921291f},
{0.453990489f, -0.891006529f}, {0.436409235f, -0.899748266f},
{0.418659747f, -0.908143163f}, {0.400748819f, -0.916187942f},
{0.382683426f, -0.923879504f}, {0.364470512f, -0.931214929f},
{0.346117049f, -0.938191354f}, {0.327630192f, -0.944806039f},
{0.309017003f, -0.951056540f}, {0.290284663f, -0.956940353f},
{0.271440446f, -0.962455213f}, {0.252491564f, -0.967599094f},
{0.233445361f, -0.972369909f}, {0.214309156f, -0.976765871f},
{0.195090324f, -0.980785251f}, {0.175796285f, -0.984426558f},
{0.156434461f, -0.987688363f}, {0.137012348f, -0.990569353f},
{0.117537394f, -0.993068457f}, {0.0980171412f, -0.995184720f},
{0.0784590989f, -0.996917307f}, {0.0588708036f, -0.998265624f},
{0.0392598175f, -0.999229014f}, {0.0196336918f, -0.999807239f},
{6.12323426e-17f, -1.00000000f}, {-0.0196336918f, -0.999807239f},
{-0.0392598175f, -0.999229014f}, {-0.0588708036f, -0.998265624f},
{-0.0784590989f, -0.996917307f}, {-0.0980171412f, -0.995184720f},
{-0.117537394f, -0.993068457f}, {-0.137012348f, -0.990569353f},
{-0.156434461f, -0.987688363f}, {-0.175796285f, -0.984426558f},
{-0.195090324f, -0.980785251f}, {-0.214309156f, -0.976765871f},
{-0.233445361f, -0.972369909f}, {-0.252491564f, -0.967599094f},
{-0.271440446f, -0.962455213f}, {-0.290284663f, -0.956940353f},
{-0.309017003f, -0.951056540f}, {-0.327630192f, -0.944806039f},
{-0.346117049f, -0.938191354f}, {-0.364470512f, -0.931214929f},
{-0.382683426f, -0.923879504f}, {-0.400748819f, -0.916187942f},
{-0.418659747f, -0.908143163f}, {-0.436409235f, -0.899748266f},
{-0.453990489f, -0.891006529f}, {-0.471396744f, -0.881921291f},
{-0.488621235f, -0.872496009f}, {-0.505657375f, -0.862734377f},
{-0.522498548f, -0.852640152f}, {-0.539138317f, -0.842217207f},
{-0.555570245f, -0.831469595f}, {-0.571787953f, -0.820401430f},
{-0.587785244f, -0.809017003f}, {-0.603555918f, -0.797320664f},
{-0.619093955f, -0.785316944f}, {-0.634393275f, -0.773010433f},
{-0.649448037f, -0.760405958f}, {-0.664252460f, -0.747508347f},
{-0.678800762f, -0.734322488f}, {-0.693087339f, -0.720853567f},
{-0.707106769f, -0.707106769f}, {-0.720853567f, -0.693087339f},
{-0.734322488f, -0.678800762f}, {-0.747508347f, -0.664252460f},
{-0.760405958f, -0.649448037f}, {-0.773010433f, -0.634393275f},
{-0.785316944f, -0.619093955f}, {-0.797320664f, -0.603555918f},
{-0.809017003f, -0.587785244f}, {-0.820401430f, -0.571787953f},
{-0.831469595f, -0.555570245f}, {-0.842217207f, -0.539138317f},
{-0.852640152f, -0.522498548f}, {-0.862734377f, -0.505657375f},
{-0.872496009f, -0.488621235f}, {-0.881921291f, -0.471396744f},
{-0.891006529f, -0.453990489f}, {-0.899748266f, -0.436409235f},
{-0.908143163f, -0.418659747f}, {-0.916187942f, -0.400748819f},
{-0.923879504f, -0.382683426f}, {-0.931214929f, -0.364470512f},
{-0.938191354f, -0.346117049f}, {-0.944806039f, -0.327630192f},
{-0.951056540f, -0.309017003f}, {-0.956940353f, -0.290284663f},
{-0.962455213f, -0.271440446f}, {-0.967599094f, -0.252491564f},
{-0.972369909f, -0.233445361f}, {-0.976765871f, -0.214309156f},
{-0.980785251f, -0.195090324f}, {-0.984426558f, -0.175796285f},
{-0.987688363f, -0.156434461f}, {-0.990569353f, -0.137012348f},
{-0.993068457f, -0.117537394f}, {-0.995184720f, -0.0980171412f},
{-0.996917307f, -0.0784590989f}, {-0.998265624f, -0.0588708036f},
{-0.999229014f, -0.0392598175f}, {-0.999807239f, -0.0196336918f},
{-1.00000000f, -1.22464685e-16f}, {-0.999807239f, 0.0196336918f},
{-0.999229014f, 0.0392598175f}, {-0.998265624f, 0.0588708036f},
{-0.996917307f, 0.0784590989f}, {-0.995184720f, 0.0980171412f},
{-0.993068457f, 0.117537394f}, {-0.990569353f, 0.137012348f},
{-0.987688363f, 0.156434461f}, {-0.984426558f, 0.175796285f},
{-0.980785251f, 0.195090324f}, {-0.976765871f, 0.214309156f},
{-0.972369909f, 0.233445361f}, {-0.967599094f, 0.252491564f},
{-0.962455213f, 0.271440446f}, {-0.956940353f, 0.290284663f},
{-0.951056540f, 0.309017003f}, {-0.944806039f, 0.327630192f},
{-0.938191354f, 0.346117049f}, {-0.931214929f, 0.364470512f},
{-0.923879504f, 0.382683426f}, {-0.916187942f, 0.400748819f},
{-0.908143163f, 0.418659747f}, {-0.899748266f, 0.436409235f},
{-0.891006529f, 0.453990489f}, {-0.881921291f, 0.471396744f},
{-0.872496009f, 0.488621235f}, {-0.862734377f, 0.505657375f},
{-0.852640152f, 0.522498548f}, {-0.842217207f, 0.539138317f},
{-0.831469595f, 0.555570245f}, {-0.820401430f, 0.571787953f},
{-0.809017003f, 0.587785244f}, {-0.797320664f, 0.603555918f},
{-0.785316944f, 0.619093955f}, {-0.773010433f, 0.634393275f},
{-0.760405958f, 0.649448037f}, {-0.747508347f, 0.664252460f},
{-0.734322488f, 0.678800762f}, {-0.720853567f, 0.693087339f},
{-0.707106769f, 0.707106769f}, {-0.693087339f, 0.720853567f},
{-0.678800762f, 0.734322488f}, {-0.664252460f, 0.747508347f},
{-0.649448037f, 0.760405958f}, {-0.634393275f, 0.773010433f},
{-0.619093955f, 0.785316944f}, {-0.603555918f, 0.797320664f},
{-0.587785244f, 0.809017003f}, {-0.571787953f, 0.820401430f},
{-0.555570245f, 0.831469595f}, {-0.539138317f, 0.842217207f},
{-0.522498548f, 0.852640152f}, {-0.505657375f, 0.862734377f},
{-0.488621235f, 0.872496009f}, {-0.471396744f, 0.881921291f},
{-0.453990489f, 0.891006529f}, {-0.436409235f, 0.899748266f},
{-0.418659747f, 0.908143163f}, {-0.400748819f, 0.916187942f},
{-0.382683426f, 0.923879504f}, {-0.364470512f, 0.931214929f},
{-0.346117049f, 0.938191354f}, {-0.327630192f, 0.944806039f},
{-0.309017003f, 0.951056540f}, {-0.290284663f, 0.956940353f},
{-0.271440446f, 0.962455213f}, {-0.252491564f, 0.967599094f},
{-0.233445361f, 0.972369909f}, {-0.214309156f, 0.976765871f},
{-0.195090324f, 0.980785251f}, {-0.175796285f, 0.984426558f},
{-0.156434461f, 0.987688363f}, {-0.137012348f, 0.990569353f},
{-0.117537394f, 0.993068457f}, {-0.0980171412f, 0.995184720f},
{-0.0784590989f, 0.996917307f}, {-0.0588708036f, 0.998265624f},
{-0.0392598175f, 0.999229014f}, {-0.0196336918f, 0.999807239f},
{-1.83697015e-16f, 1.00000000f}, {0.0196336918f, 0.999807239f},
{0.0392598175f, 0.999229014f}, {0.0588708036f, 0.998265624f},
{0.0784590989f, 0.996917307f}, {0.0980171412f, 0.995184720f},
{0.117537394f, 0.993068457f}, {0.137012348f, 0.990569353f},
{0.156434461f, 0.987688363f}, {0.175796285f, 0.984426558f},
{0.195090324f, 0.980785251f}, {0.214309156f, 0.976765871f},
{0.233445361f, 0.972369909f}, {0.252491564f, 0.967599094f},
{0.271440446f, 0.962455213f}, {0.290284663f, 0.956940353f},
{0.309017003f, 0.951056540f}, {0.327630192f, 0.944806039f},
{0.346117049f, 0.938191354f}, {0.364470512f, 0.931214929f},
{0.382683426f, 0.923879504f}, {0.400748819f, 0.916187942f},
{0.418659747f, 0.908143163f}, {0.436409235f, 0.899748266f},
{0.453990489f, 0.891006529f}, {0.471396744f, 0.881921291f},
{0.488621235f, 0.872496009f}, {0.505657375f, 0.862734377f},
{0.522498548f, 0.852640152f}, {0.539138317f, 0.842217207f},
{0.555570245f, 0.831469595f}, {0.571787953f, 0.820401430f},
{0.587785244f, 0.809017003f}, {0.603555918f, 0.797320664f},
{0.619093955f, 0.785316944f}, {0.634393275f, 0.773010433f},
{0.649448037f, 0.760405958f}, {0.664252460f, 0.747508347f},
{0.678800762f, 0.734322488f}, {0.693087339f, 0.720853567f},
{0.707106769f, 0.707106769f}, {0.720853567f, 0.693087339f},
{0.734322488f, 0.678800762f}, {0.747508347f, 0.664252460f},
{0.760405958f, 0.649448037f}, {0.773010433f, 0.634393275f},
{0.785316944f, 0.619093955f}, {0.797320664f, 0.603555918f},
{0.809017003f, 0.587785244f}, {0.820401430f, 0.571787953f},
{0.831469595f, 0.555570245f}, {0.842217207f, 0.539138317f},
{0.852640152f, 0.522498548f}, {0.862734377f, 0.505657375f},
{0.872496009f, 0.488621235f}, {0.881921291f, 0.471396744f},
{0.891006529f, 0.453990489f}, {0.899748266f, 0.436409235f},
{0.908143163f, 0.418659747f}, {0.916187942f, 0.400748819f},
{0.923879504f, 0.382683426f}, {0.931214929f, 0.364470512f},
{0.938191354f, 0.346117049f}, {0.944806039f, 0.327630192f},
{0.951056540f, 0.309017003f}, {0.956940353f, 0.290284663f},
{0.962455213f, 0.271440446f}, {0.967599094f, 0.252491564f},
{0.972369909f, 0.233445361f}, {0.976765871f, 0.214309156f},
{0.980785251f, 0.195090324f}, {0.984426558f, 0.175796285f},
{0.987688363f, 0.156434461f}, {0.990569353f, 0.137012348f},
{0.993068457f, 0.117537394f}, {0.995184720f, 0.0980171412f},
{0.996917307f, 0.0784590989f}, {0.998265624f, 0.0588708036f},
{0.999229014f, 0.0392598175f}, {0.999807239f, 0.0196336918f},
};
const kiss_fft_state kfft = {
320, /* nfft */
0.0031250000f, /* scale */
-1, /* shift */
{5, 64, 4, 16, 4, 4, 4, 1, 0, 0, 0, 0, 0, 0, 0, 0, }, /* factors */
fft_bitrev, /* bitrev*/
fft_twiddles, /* twiddles*/
(arch_fft_state *)&arch_fft, /* arch_fft*/
};
const float half_window[] = {
3.78491532e-05f, 0.000340620492f, 0.000946046319f, 0.00185389258f, 0.00306380726f,
0.00457531959f, 0.00638783723f, 0.00850064680f, 0.0109129101f, 0.0136236614f,
0.0166318044f, 0.0199361145f, 0.0235352255f, 0.0274276342f, 0.0316116922f,
0.0360856056f, 0.0408474281f, 0.0458950549f, 0.0512262285f, 0.0568385124f,
0.0627293140f, 0.0688958541f, 0.0753351897f, 0.0820441842f, 0.0890194997f,
0.0962576419f, 0.103754878f, 0.111507311f, 0.119510807f, 0.127761051f,
0.136253506f, 0.144983411f, 0.153945804f, 0.163135484f, 0.172547072f,
0.182174906f, 0.192013159f, 0.202055752f, 0.212296382f, 0.222728521f,
0.233345464f, 0.244140238f, 0.255105674f, 0.266234398f, 0.277518868f,
0.288951218f, 0.300523549f, 0.312227666f, 0.324055225f, 0.335997701f,
0.348046392f, 0.360192508f, 0.372427016f, 0.384740859f, 0.397124738f,
0.409569323f, 0.422065198f, 0.434602767f, 0.447172493f, 0.459764689f,
0.472369671f, 0.484977663f, 0.497579008f, 0.510163903f, 0.522722721f,
0.535245717f, 0.547723293f, 0.560145974f, 0.572504222f, 0.584788740f,
0.596990347f, 0.609099925f, 0.621108532f, 0.633007407f, 0.644788086f,
0.656442165f, 0.667961538f, 0.679338276f, 0.690564752f, 0.701633692f,
0.712537885f, 0.723270535f, 0.733825266f, 0.744195819f, 0.754376352f,
0.764361382f, 0.774145722f, 0.783724606f, 0.793093503f, 0.802248418f,
0.811185598f, 0.819901764f, 0.828393936f, 0.836659551f, 0.844696403f,
0.852502763f, 0.860077202f, 0.867418647f, 0.874526560f, 0.881400526f,
0.888040781f, 0.894447744f, 0.900622249f, 0.906565487f, 0.912279010f,
0.917764664f, 0.923024654f, 0.928061485f, 0.932878017f, 0.937477291f,
0.941862822f, 0.946038187f, 0.950007319f, 0.953774393f, 0.957343817f,
0.960720181f, 0.963908315f, 0.966913164f, 0.969739914f, 0.972393870f,
0.974880517f, 0.977205336f, 0.979374051f, 0.981392324f, 0.983266115f,
0.985001266f, 0.986603677f, 0.988079309f, 0.989434063f, 0.990674019f,
0.991804957f, 0.992832899f, 0.993763626f, 0.994602919f, 0.995356441f,
0.996029854f, 0.996628702f, 0.997158289f, 0.997623861f, 0.998030603f,
0.998383403f, 0.998687088f, 0.998946249f, 0.999165416f, 0.999348700f,
0.999500215f, 0.999623775f, 0.999723017f, 0.999801278f, 0.999861658f,
0.999907196f, 0.999940455f, 0.999963880f, 0.999979615f, 0.999989510f,
0.999995291f, 0.999998271f, 0.999999523f, 0.999999940f, 1.00000000f,
};
const float dct_table[] = {
0.707106769f, 0.996194720f, 0.984807730f, 0.965925813f, 0.939692616f,
0.906307817f, 0.866025388f, 0.819152057f, 0.766044438f, 0.707106769f,
0.642787635f, 0.573576450f, 0.500000000f, 0.422618270f, 0.342020154f,
0.258819044f, 0.173648179f, 0.0871557444f, 0.707106769f, 0.965925813f,
0.866025388f, 0.707106769f, 0.500000000f, 0.258819044f, 6.12323426e-17f,
-0.258819044f, -0.500000000f, -0.707106769f, -0.866025388f, -0.965925813f,
-1.00000000f, -0.965925813f, -0.866025388f, -0.707106769f, -0.500000000f,
-0.258819044f, 0.707106769f, 0.906307817f, 0.642787635f, 0.258819044f,
-0.173648179f, -0.573576450f, -0.866025388f, -0.996194720f, -0.939692616f,
-0.707106769f, -0.342020154f, 0.0871557444f, 0.500000000f, 0.819152057f,
0.984807730f, 0.965925813f, 0.766044438f, 0.422618270f, 0.707106769f,
0.819152057f, 0.342020154f, -0.258819044f, -0.766044438f, -0.996194720f,
-0.866025388f, -0.422618270f, 0.173648179f, 0.707106769f, 0.984807730f,
0.906307817f, 0.500000000f, -0.0871557444f, -0.642787635f, -0.965925813f,
-0.939692616f, -0.573576450f, 0.707106769f, 0.707106769f, 6.12323426e-17f,
-0.707106769f, -1.00000000f, -0.707106769f, -1.83697015e-16f, 0.707106769f,
1.00000000f, 0.707106769f, 3.06161700e-16f, -0.707106769f, -1.00000000f,
-0.707106769f, -4.28626385e-16f, 0.707106769f, 1.00000000f, 0.707106769f,
0.707106769f, 0.573576450f, -0.342020154f, -0.965925813f, -0.766044438f,
0.0871557444f, 0.866025388f, 0.906307817f, 0.173648179f, -0.707106769f,
-0.984807730f, -0.422618270f, 0.500000000f, 0.996194720f, 0.642787635f,
-0.258819044f, -0.939692616f, -0.819152057f, 0.707106769f, 0.422618270f,
-0.642787635f, -0.965925813f, -0.173648179f, 0.819152057f, 0.866025388f,
-0.0871557444f, -0.939692616f, -0.707106769f, 0.342020154f, 0.996194720f,
0.500000000f, -0.573576450f, -0.984807730f, -0.258819044f, 0.766044438f,
0.906307817f, 0.707106769f, 0.258819044f, -0.866025388f, -0.707106769f,
0.500000000f, 0.965925813f, 3.06161700e-16f, -0.965925813f, -0.500000000f,
0.707106769f, 0.866025388f, -0.258819044f, -1.00000000f, -0.258819044f,
0.866025388f, 0.707106769f, -0.500000000f, -0.965925813f, 0.707106769f,
0.0871557444f, -0.984807730f, -0.258819044f, 0.939692616f, 0.422618270f,
-0.866025388f, -0.573576450f, 0.766044438f, 0.707106769f, -0.642787635f,
-0.819152057f, 0.500000000f, 0.906307817f, -0.342020154f, -0.965925813f,
0.173648179f, 0.996194720f, 0.707106769f, -0.0871557444f, -0.984807730f,
0.258819044f, 0.939692616f, -0.422618270f, -0.866025388f, 0.573576450f,
0.766044438f, -0.707106769f, -0.642787635f, 0.819152057f, 0.500000000f,
-0.906307817f, -0.342020154f, 0.965925813f, 0.173648179f, -0.996194720f,
0.707106769f, -0.258819044f, -0.866025388f, 0.707106769f, 0.500000000f,
-0.965925813f, -4.28626385e-16f, 0.965925813f, -0.500000000f, -0.707106769f,
0.866025388f, 0.258819044f, -1.00000000f, 0.258819044f, 0.866025388f,
-0.707106769f, -0.500000000f, 0.965925813f, 0.707106769f, -0.422618270f,
-0.642787635f, 0.965925813f, -0.173648179f, -0.819152057f, 0.866025388f,
0.0871557444f, -0.939692616f, 0.707106769f, 0.342020154f, -0.996194720f,
0.500000000f, 0.573576450f, -0.984807730f, 0.258819044f, 0.766044438f,
-0.906307817f, 0.707106769f, -0.573576450f, -0.342020154f, 0.965925813f,
-0.766044438f, -0.0871557444f, 0.866025388f, -0.906307817f, 0.173648179f,
0.707106769f, -0.984807730f, 0.422618270f, 0.500000000f, -0.996194720f,
0.642787635f, 0.258819044f, -0.939692616f, 0.819152057f, 0.707106769f,
-0.707106769f, -1.83697015e-16f, 0.707106769f, -1.00000000f, 0.707106769f,
5.51091070e-16f, -0.707106769f, 1.00000000f, -0.707106769f, -2.69484189e-15f,
0.707106769f, -1.00000000f, 0.707106769f, -4.90477710e-16f, -0.707106769f,
1.00000000f, -0.707106769f, 0.707106769f, -0.819152057f, 0.342020154f,
0.258819044f, -0.766044438f, 0.996194720f, -0.866025388f, 0.422618270f,
0.173648179f, -0.707106769f, 0.984807730f, -0.906307817f, 0.500000000f,
0.0871557444f, -0.642787635f, 0.965925813f, -0.939692616f, 0.573576450f,
0.707106769f, -0.906307817f, 0.642787635f, -0.258819044f, -0.173648179f,
0.573576450f, -0.866025388f, 0.996194720f, -0.939692616f, 0.707106769f,
-0.342020154f, -0.0871557444f, 0.500000000f, -0.819152057f, 0.984807730f,
-0.965925813f, 0.766044438f, -0.422618270f, 0.707106769f, -0.965925813f,
0.866025388f, -0.707106769f, 0.500000000f, -0.258819044f, 1.10280111e-15f,
0.258819044f, -0.500000000f, 0.707106769f, -0.866025388f, 0.965925813f,
-1.00000000f, 0.965925813f, -0.866025388f, 0.707106769f, -0.500000000f,
0.258819044f, 0.707106769f, -0.996194720f, 0.984807730f, -0.965925813f,
0.939692616f, -0.906307817f, 0.866025388f, -0.819152057f, 0.766044438f,
-0.707106769f, 0.642787635f, -0.573576450f, 0.500000000f, -0.422618270f,
0.342020154f, -0.258819044f, 0.173648179f, -0.0871557444f, };
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