encounter
/
SDL
mirror of https://github.com/encounter/SDL.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

audio: Prebake the resampler's kaiser table instead of doing it at runtime.

This commit is contained in:
Ryan C. Gordon 2022-04-09 23:43:57 -04:00
parent f6eb4b0759
commit de019568dc
5 changed files with 1054 additions and 110 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

162
build-scripts/gen_audio_resampler_filter.c Normal file
View File

@ -0,0 +1,162 @@
/*
Simple DirectMedia Layer
Copyright (C) 1997-2022 Sam Lantinga <slouken@libsdl.org>
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
*/
/*
Built with:
gcc -o genfilter build-scripts/gen_audio_resampler_filter.c -lm && ./genfilter > src/audio/SDL_audio_resampler_filter.h
*/
/*
SDL's resampler uses a "bandlimited interpolation" algorithm:
https://ccrma.stanford.edu/~jos/resample/
This code pre-generates the kaiser tables so we don't have to do this at
run time, at a cost of about 20 kilobytes of static data in SDL. This code
used to be part of SDL itself and generated the tables on the first use,
but that was expensive to produce on platforms without floating point
hardware.
*/
#include <stdio.h>
#include <math.h>
#define RESAMPLER_ZERO_CROSSINGS 5
#define RESAMPLER_BITS_PER_SAMPLE 16
#define RESAMPLER_SAMPLES_PER_ZERO_CROSSING (1 << ((RESAMPLER_BITS_PER_SAMPLE / 2) + 1))
#define RESAMPLER_FILTER_SIZE ((RESAMPLER_SAMPLES_PER_ZERO_CROSSING * RESAMPLER_ZERO_CROSSINGS) + 1)
/* This is a "modified" bessel function, so you can't use POSIX j0() */
static double
bessel(const double x)
{
const double xdiv2 = x / 2.0;
double i0 = 1.0f;
double f = 1.0f;
int i = 1;
while (1) {
const double diff = pow(xdiv2, i * 2) / pow(f, 2);
if (diff < 1.0e-21f) {
break;
}
i0 += diff;
i++;
f *= (double) i;
}
return i0;
}
/* build kaiser table with cardinal sine applied to it, and array of differences between elements. */
static void
kaiser_and_sinc(float *table, float *diffs, const int tablelen, const double beta)
{
const int lenm1 = tablelen - 1;
const int lenm1div2 = lenm1 / 2;
int i;
table[0] = 1.0f;
for (i = 1; i < tablelen; i++) {
const double kaiser = bessel(beta * sqrt(1.0 - pow(((i - lenm1) / 2.0) / lenm1div2, 2.0))) / bessel(beta);
table[tablelen - i] = (float) kaiser;
}
for (i = 1; i < tablelen; i++) {
const float x = (((float) i) / ((float) RESAMPLER_SAMPLES_PER_ZERO_CROSSING)) * ((float) M_PI);
table[i] *= sinf(x) / x;
diffs[i - 1] = table[i] - table[i - 1];
}
diffs[lenm1] = 0.0f;
}
static float ResamplerFilter[RESAMPLER_FILTER_SIZE];
static float ResamplerFilterDifference[RESAMPLER_FILTER_SIZE];
static void
PrepareResampleFilter(void)
{
/* if dB > 50, beta=(0.1102 * (dB - 8.7)), according to Matlab. */
const double dB = 80.0;
const double beta = 0.1102 * (dB - 8.7);
kaiser_and_sinc(ResamplerFilter, ResamplerFilterDifference, RESAMPLER_FILTER_SIZE, beta);
}
int main(void)
{
int i;
PrepareResampleFilter();
printf(
"/*\n"
" Simple DirectMedia Layer\n"
" Copyright (C) 1997-2022 Sam Lantinga <slouken@libsdl.org>\n"
"\n"
" This software is provided 'as-is', without any express or implied\n"
" warranty. In no event will the authors be held liable for any damages\n"
" arising from the use of this software.\n"
"\n"
" Permission is granted to anyone to use this software for any purpose,\n"
" including commercial applications, and to alter it and redistribute it\n"
" freely, subject to the following restrictions:\n"
"\n"
" 1. The origin of this software must not be misrepresented; you must not\n"
" claim that you wrote the original software. If you use this software\n"
" in a product, an acknowledgment in the product documentation would be\n"
" appreciated but is not required.\n"
" 2. Altered source versions must be plainly marked as such, and must not be\n"
" misrepresented as being the original software.\n"
" 3. This notice may not be removed or altered from any source distribution.\n"
"*/\n"
"\n"
"/* DO NOT EDIT, THIS FILE WAS GENERATED BY build-scripts/gen_audio_resampler_filter.c */\n"
"\n"
"#define RESAMPLER_ZERO_CROSSINGS %d\n"
"#define RESAMPLER_BITS_PER_SAMPLE %d\n"
"#define RESAMPLER_SAMPLES_PER_ZERO_CROSSING (1 << ((RESAMPLER_BITS_PER_SAMPLE / 2) + 1))\n"
"#define RESAMPLER_FILTER_SIZE ((RESAMPLER_SAMPLES_PER_ZERO_CROSSING * RESAMPLER_ZERO_CROSSINGS) + 1)\n"
"\n", RESAMPLER_ZERO_CROSSINGS, RESAMPLER_BITS_PER_SAMPLE
);
printf("static const float ResamplerFilter[RESAMPLER_FILTER_SIZE] = {\n");
printf(" %ff", ResamplerFilter[0]);
for (i = 0; i < RESAMPLER_FILTER_SIZE-1; i++) {
printf("%s%ff", ((i % 6) == 5) ? ",\n " : ", ", ResamplerFilter[i+1]);
}
printf("\n};\n\n");
printf("static const float ResamplerFilterDifference[RESAMPLER_FILTER_SIZE] = {\n");
printf(" %ff", ResamplerFilterDifference[0]);
for (i = 0; i < RESAMPLER_FILTER_SIZE-1; i++) {
printf("%s%ff", ((i % 6) == 5) ? ",\n " : ", ", ResamplerFilterDifference[i+1]);
}
printf("\n};\n\n");
printf("/* vi: set ts=4 sw=4 expandtab: */\n\n");
return 0;
}
/* vi: set ts=4 sw=4 expandtab: */

2
src/audio/SDL_audio.c
View File

@ -1649,8 +1649,6 @@ SDL_AudioQuit(void)
#ifdef HAVE_LIBSAMPLERATE_H
UnloadLibSampleRate();
#endif
SDL_FreeResampleFilter();
}
#define NUM_FORMATS 10

5
src/audio/SDL_audio_c.h
View File

@ -70,11 +70,6 @@ extern SDL_AudioFilter SDL_Convert_F32_to_S16;
extern SDL_AudioFilter SDL_Convert_F32_to_U16;
extern SDL_AudioFilter SDL_Convert_F32_to_S32;
/* You need to call SDL_PrepareResampleFilter() before using the internal resampler.
SDL_AudioQuit() calls SDL_FreeResamplerFilter(), you should never call it yourself. */
extern int SDL_PrepareResampleFilter(void);
extern void SDL_FreeResampleFilter(void);
#endif /* SDL_audio_c_h_ */
/* vi: set ts=4 sw=4 expandtab: */

890
src/audio/SDL_audio_resampler_filter.h Normal file
View File

@ -0,0 +1,890 @@
/*
Simple DirectMedia Layer
Copyright (C) 1997-2022 Sam Lantinga <slouken@libsdl.org>
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
*/
/* DO NOT EDIT, THIS FILE WAS GENERATED BY build-scripts/gen_audio_resampler_filter.c */
#define RESAMPLER_ZERO_CROSSINGS 5
#define RESAMPLER_BITS_PER_SAMPLE 16
#define RESAMPLER_SAMPLES_PER_ZERO_CROSSING (1 << ((RESAMPLER_BITS_PER_SAMPLE / 2) + 1))
#define RESAMPLER_FILTER_SIZE ((RESAMPLER_SAMPLES_PER_ZERO_CROSSING * RESAMPLER_ZERO_CROSSINGS) + 1)
static const float ResamplerFilter[RESAMPLER_FILTER_SIZE] = {
1.000000f, 0.999994f, 0.999974f, 0.999941f, 0.999895f, 0.999834f,
0.999760f, 0.999672f, 0.999571f, 0.999456f, 0.999327f, 0.999185f,
0.999029f, 0.998859f, 0.998676f, 0.998479f, 0.998269f, 0.998044f,
0.997807f, 0.997555f, 0.997290f, 0.997012f, 0.996720f, 0.996414f,
0.996094f, 0.995762f, 0.995415f, 0.995055f, 0.994682f, 0.994295f,
0.993894f, 0.993480f, 0.993052f, 0.992611f, 0.992157f, 0.991689f,
0.991207f, 0.990713f, 0.990204f, 0.989683f, 0.989148f, 0.988599f,
0.988037f, 0.987462f, 0.986874f, 0.986272f, 0.985657f, 0.985028f,
0.984387f, 0.983732f, 0.983064f, 0.982382f, 0.981688f, 0.980980f,
0.980259f, 0.979525f, 0.978778f, 0.978018f, 0.977245f, 0.976458f,
0.975659f, 0.974847f, 0.974021f, 0.973183f, 0.972332f, 0.971468f,
0.970591f, 0.969701f, 0.968798f, 0.967882f, 0.966954f, 0.966013f,
0.965059f, 0.964092f, 0.963113f, 0.962120f, 0.961116f, 0.960098f,
0.959068f, 0.958026f, 0.956971f, 0.955903f, 0.954823f, 0.953731f,
0.952626f, 0.951509f, 0.950379f, 0.949237f, 0.948083f, 0.946917f,
0.945738f, 0.944547f, 0.943344f, 0.942128f, 0.940901f, 0.939661f,
0.938410f, 0.937146f, 0.935871f, 0.934583f, 0.933284f, 0.931973f,
0.930650f, 0.929315f, 0.927968f, 0.926610f, 0.925240f, 0.923858f,
0.922465f, 0.921060f, 0.919644f, 0.918216f, 0.916776f, 0.915325f,
0.913863f, 0.912390f, 0.910905f, 0.909408f, 0.907901f, 0.906382f,
0.904853f, 0.903312f, 0.901760f, 0.900197f, 0.898623f, 0.897038f,
0.895442f, 0.893835f, 0.892218f, 0.890590f, 0.888951f, 0.887301f,
0.885641f, 0.883970f, 0.882288f, 0.880596f, 0.878894f, 0.877181f,
0.875457f, 0.873724f, 0.871980f, 0.870226f, 0.868461f, 0.866687f,
0.864902f, 0.863107f, 0.861303f, 0.859488f, 0.857664f, 0.855829f,
0.853985f, 0.852131f, 0.850267f, 0.848394f, 0.846511f, 0.844618f,
0.842716f, 0.840805f, 0.838884f, 0.836953f, 0.835014f, 0.833065f,
0.831107f, 0.829139f, 0.827163f, 0.825177f, 0.823183f, 0.821179f,
0.819167f, 0.817146f, 0.815116f, 0.813077f, 0.811029f, 0.808973f,
0.806909f, 0.804835f, 0.802754f, 0.800664f, 0.798565f, 0.796458f,
0.794343f, 0.792220f, 0.790088f, 0.787949f, 0.785801f, 0.783645f,
0.781482f, 0.779310f, 0.777131f, 0.774944f, 0.772750f, 0.770547f,
0.768337f, 0.766120f, 0.763895f, 0.761662f, 0.759423f, 0.757176f,
0.754921f, 0.752660f, 0.750391f, 0.748115f, 0.745833f, 0.743543f,
0.741246f, 0.738943f, 0.736633f, 0.734316f, 0.731992f, 0.729662f,
0.727325f, 0.724982f, 0.722632f, 0.720276f, 0.717914f, 0.715545f,
0.713171f, 0.710790f, 0.708403f, 0.706010f, 0.703611f, 0.701206f,
0.698795f, 0.696379f, 0.693957f, 0.691529f, 0.689096f, 0.686657f,
0.684213f, 0.681763f, 0.679308f, 0.676847f, 0.674382f, 0.671911f,
0.669436f, 0.666955f, 0.664469f, 0.661978f, 0.659483f, 0.656983f,
0.654477f, 0.651968f, 0.649454f, 0.646935f, 0.644412f, 0.641884f,
0.639352f, 0.636816f, 0.634275f, 0.631731f, 0.629182f, 0.626629f,
0.624072f, 0.621512f, 0.618947f, 0.616379f, 0.613807f, 0.611232f,
0.608652f, 0.606070f, 0.603484f, 0.600894f, 0.598301f, 0.595705f,
0.593106f, 0.590503f, 0.587898f, 0.585289f, 0.582677f, 0.580063f,
0.577446f, 0.574826f, 0.572203f, 0.569578f, 0.566950f, 0.564319f,
0.561686f, 0.559051f, 0.556414f, 0.553774f, 0.551132f, 0.548488f,
0.545841f, 0.543193f, 0.540543f, 0.537891f, 0.535237f, 0.532582f,
0.529924f, 0.527265f, 0.524605f, 0.521943f, 0.519280f, 0.516615f,
0.513949f, 0.511281f, 0.508613f, 0.505943f, 0.503273f, 0.500601f,
0.497928f, 0.495255f, 0.492581f, 0.489906f, 0.487230f, 0.484554f,
0.481877f, 0.479199f, 0.476522f, 0.473843f, 0.471165f, 0.468486f,
0.465807f, 0.463128f, 0.460449f, 0.457770f, 0.455091f, 0.452412f,
0.449733f, 0.447055f, 0.444377f, 0.441699f, 0.439022f, 0.436345f,
0.433668f, 0.430993f, 0.428318f, 0.425643f, 0.422970f, 0.420297f,
0.417625f, 0.414955f, 0.412285f, 0.409616f, 0.406949f, 0.404282f,
0.401617f, 0.398954f, 0.396291f, 0.393631f, 0.390971f, 0.388314f,
0.385657f, 0.383003f, 0.380350f, 0.377699f, 0.375050f, 0.372403f,
0.369758f, 0.367115f, 0.364474f, 0.361835f, 0.359198f, 0.356564f,
0.353932f, 0.351302f, 0.348675f, 0.346050f, 0.343428f, 0.340808f,
0.338191f, 0.335577f, 0.332965f, 0.330357f, 0.327751f, 0.325148f,
0.322548f, 0.319951f, 0.317358f, 0.314767f, 0.312180f, 0.309596f,
0.307015f, 0.304437f, 0.301863f, 0.299293f, 0.296726f, 0.294162f,
0.291603f, 0.289047f, 0.286494f, 0.283946f, 0.281401f, 0.278860f,
0.276323f, 0.273791f, 0.271262f, 0.268737f, 0.266217f, 0.263700f,
0.261188f, 0.258680f, 0.256177f, 0.253678f, 0.251183f, 0.248693f,
0.246208f, 0.243727f, 0.241251f, 0.238779f, 0.236312f, 0.233850f,
0.231393f, 0.228941f, 0.226494f, 0.224051f, 0.221614f, 0.219182f,
0.216755f, 0.214333f, 0.211916f, 0.209505f, 0.207099f, 0.204698f,
0.202302f, 0.199913f, 0.197528f, 0.195149f, 0.192776f, 0.190408f,
0.188046f, 0.185690f, 0.183339f, 0.180995f, 0.178656f, 0.176323f,
0.173995f, 0.171674f, 0.169359f, 0.167050f, 0.164747f, 0.162450f,
0.160159f, 0.157875f, 0.155597f, 0.153325f, 0.151059f, 0.148800f,
0.146547f, 0.144300f, 0.142060f, 0.139827f, 0.137600f, 0.135380f,
0.133166f, 0.130959f, 0.128759f, 0.126566f, 0.124379f, 0.122199f,
0.120026f, 0.117860f, 0.115701f, 0.113549f, 0.111404f, 0.109265f,
0.107134f, 0.105010f, 0.102893f, 0.100784f, 0.098681f, 0.096586f,
0.094498f, 0.092417f, 0.090344f, 0.088278f, 0.086219f, 0.084168f,
0.082124f, 0.080088f, 0.078059f, 0.076038f, 0.074025f, 0.072019f,
0.070020f, 0.068029f, 0.066046f, 0.064071f, 0.062104f, 0.060144f,
0.058192f, 0.056248f, 0.054312f, 0.052383f, 0.050463f, 0.048550f,
0.046646f, 0.044749f, 0.042861f, 0.040980f, 0.039108f, 0.037243f,
0.035387f, 0.033539f, 0.031699f, 0.029867f, 0.028044f, 0.026228f,
0.024421f, 0.022622f, 0.020832f, 0.019050f, 0.017276f, 0.015510f,
0.013753f, 0.012004f, 0.010264f, 0.008532f, 0.006809f, 0.005094f,
0.003387f, 0.001689f, -0.000000f, -0.001681f, -0.003353f, -0.005017f,
-0.006672f, -0.008319f, -0.009956f, -0.011586f, -0.013206f, -0.014818f,
-0.016421f, -0.018016f, -0.019602f, -0.021179f, -0.022747f, -0.024306f,
-0.025857f, -0.027399f, -0.028932f, -0.030456f, -0.031972f, -0.033479f,
-0.034976f, -0.036465f, -0.037945f, -0.039416f, -0.040879f, -0.042332f,
-0.043777f, -0.045212f, -0.046639f, -0.048056f, -0.049465f, -0.050865f,
-0.052255f, -0.053637f, -0.055010f, -0.056374f, -0.057729f, -0.059074f,
-0.060411f, -0.061739f, -0.063058f, -0.064368f, -0.065668f, -0.066960f,
-0.068243f, -0.069516f, -0.070781f, -0.072036f, -0.073282f, -0.074520f,
-0.075748f, -0.076967f, -0.078177f, -0.079379f, -0.080571f, -0.081754f,
-0.082927f, -0.084092f, -0.085248f, -0.086395f, -0.087532f, -0.088661f,
-0.089780f, -0.090890f, -0.091992f, -0.093084f, -0.094167f, -0.095241f,
-0.096306f, -0.097362f, -0.098409f, -0.099446f, -0.100475f, -0.101495f,
-0.102506f, -0.103507f, -0.104500f, -0.105483f, -0.106458f, -0.107423f,
-0.108380f, -0.109327f, -0.110266f, -0.111195f, -0.112116f, -0.113027f,
-0.113929f, -0.114823f, -0.115708f, -0.116583f, -0.117450f, -0.118307f,
-0.119156f, -0.119996f, -0.120827f, -0.121649f, -0.122462f, -0.123266f,
-0.124062f, -0.124848f, -0.125626f, -0.126395f, -0.127155f, -0.127906f,
-0.128648f, -0.129382f, -0.130107f, -0.130823f, -0.131530f, -0.132228f,
-0.132918f, -0.133599f, -0.134271f, -0.134935f, -0.135590f, -0.136236f,
-0.136874f, -0.137503f, -0.138123f, -0.138735f, -0.139338f, -0.139933f,
-0.140519f, -0.141096f, -0.141665f, -0.142226f, -0.142778f, -0.143321f,
-0.143856f, -0.144383f, -0.144901f, -0.145411f, -0.145912f, -0.146405f,
-0.146890f, -0.147366f, -0.147834f, -0.148294f, -0.148745f, -0.149189f,
-0.149623f, -0.150050f, -0.150469f, -0.150879f, -0.151281f, -0.151675f,
-0.152061f, -0.152439f, -0.152809f, -0.153171f, -0.153525f, -0.153870f,
-0.154208f, -0.154538f, -0.154860f, -0.155174f, -0.155480f, -0.155778f,
-0.156068f, -0.156351f, -0.156626f, -0.156892f, -0.157152f, -0.157403f,
-0.157647f, -0.157883f, -0.158111f, -0.158332f, -0.158546f, -0.158751f,
-0.158949f, -0.159140f, -0.159323f, -0.159498f, -0.159667f, -0.159827f,
-0.159981f, -0.160127f, -0.160265f, -0.160397f, -0.160521f, -0.160637f,
-0.160747f, -0.160849f, -0.160944f, -0.161032f, -0.161113f, -0.161187f,
-0.161254f, -0.161314f, -0.161366f, -0.161412f, -0.161451f, -0.161483f,
-0.161507f, -0.161526f, -0.161537f, -0.161541f, -0.161539f, -0.161530f,
-0.161514f, -0.161492f, -0.161463f, -0.161427f, -0.161384f, -0.161336f,
-0.161280f, -0.161218f, -0.161150f, -0.161075f, -0.160994f, -0.160906f,
-0.160812f, -0.160712f, -0.160605f, -0.160492f, -0.160373f, -0.160248f,
-0.160117f, -0.159979f, -0.159836f, -0.159686f, -0.159530f, -0.159369f,
-0.159201f, -0.159028f, -0.158848f, -0.158663f, -0.158472f, -0.158275f,
-0.158072f, -0.157864f, -0.157649f, -0.157430f, -0.157204f, -0.156973f,
-0.156737f, -0.156495f, -0.156247f, -0.155994f, -0.155735f, -0.155472f,
-0.155202f, -0.154928f, -0.154648f, -0.154363f, -0.154072f, -0.153777f,
-0.153476f, -0.153171f, -0.152860f, -0.152544f, -0.152223f, -0.151897f,
-0.151566f, -0.151230f, -0.150890f, -0.150544f, -0.150194f, -0.149839f,
-0.149479f, -0.149115f, -0.148745f, -0.148372f, -0.147993f, -0.147610f,
-0.147223f, -0.146831f, -0.146435f, -0.146034f, -0.145629f, -0.145219f,
-0.144805f, -0.144387f, -0.143965f, -0.143538f, -0.143107f, -0.142672f,
-0.142233f, -0.141790f, -0.141343f, -0.140892f, -0.140437f, -0.139978f,
-0.139516f, -0.139049f, -0.138578f, -0.138104f, -0.137626f, -0.137145f,
-0.136659f, -0.136170f, -0.135678f, -0.135181f, -0.134682f, -0.134179f,
-0.133672f, -0.133162f, -0.132649f, -0.132132f, -0.131612f, -0.131088f,
-0.130562f, -0.130032f, -0.129499f, -0.128963f, -0.128424f, -0.127881f,
-0.127336f, -0.126788f, -0.126237f, -0.125682f, -0.125125f, -0.124566f,
-0.124003f, -0.123437f, -0.122869f, -0.122298f, -0.121725f, -0.121148f,
-0.120569f, -0.119988f, -0.119404f, -0.118818f, -0.118229f, -0.117637f,
-0.117044f, -0.116448f, -0.115849f, -0.115249f, -0.114646f, -0.114041f,
-0.113433f, -0.112824f, -0.112212f, -0.111598f, -0.110983f, -0.110365f,
-0.109745f, -0.109124f, -0.108500f, -0.107875f, -0.107247f, -0.106618f,
-0.105988f, -0.105355f, -0.104721f, -0.104085f, -0.103447f, -0.102808f,
-0.102167f, -0.101525f, -0.100881f, -0.100236f, -0.099589f, -0.098941f,
-0.098292f, -0.097641f, -0.096989f, -0.096336f, -0.095681f, -0.095025f,
-0.094368f, -0.093710f, -0.093051f, -0.092391f, -0.091729f, -0.091067f,
-0.090404f, -0.089740f, -0.089074f, -0.088408f, -0.087741f, -0.087074f,
-0.086405f, -0.085736f, -0.085066f, -0.084395f, -0.083724f, -0.083052f,
-0.082380f, -0.081706f, -0.081033f, -0.080359f, -0.079684f, -0.079009f,
-0.078334f, -0.077658f, -0.076981f, -0.076305f, -0.075628f, -0.074951f,
-0.074274f, -0.073596f, -0.072918f, -0.072241f, -0.071563f, -0.070884f,
-0.070206f, -0.069528f, -0.068850f, -0.068172f, -0.067494f, -0.066816f,
-0.066138f, -0.065460f, -0.064783f, -0.064106f, -0.063428f, -0.062752f,
-0.062075f, -0.061399f, -0.060723f, -0.060047f, -0.059372f, -0.058697f,
-0.058023f, -0.057349f, -0.056676f, -0.056003f, -0.055331f, -0.054659f,
-0.053988f, -0.053318f, -0.052648f, -0.051979f, -0.051310f, -0.050643f,
-0.049976f, -0.049310f, -0.048644f, -0.047980f, -0.047316f, -0.046654f,
-0.045992f, -0.045331f, -0.044671f, -0.044012f, -0.043354f, -0.042697f,
-0.042041f, -0.041387f, -0.040733f, -0.040080f, -0.039429f, -0.038779f,
-0.038130f, -0.037482f, -0.036835f, -0.036190f, -0.035546f, -0.034903f,
-0.034262f, -0.033621f, -0.032983f, -0.032345f, -0.031709f, -0.031075f,
-0.030442f, -0.029810f, -0.029180f, -0.028552f, -0.027925f, -0.027299f,
-0.026675f, -0.026053f, -0.025433f, -0.024813f, -0.024196f, -0.023580f,
-0.022966f, -0.022354f, -0.021744f, -0.021135f, -0.020528f, -0.019923f,
-0.019319f, -0.018718f, -0.018118f, -0.017520f, -0.016924f, -0.016330f,
-0.015738f, -0.015147f, -0.014559f, -0.013973f, -0.013388f, -0.012806f,
-0.012226f, -0.011647f, -0.011071f, -0.010497f, -0.009925f, -0.009355f,
-0.008787f, -0.008221f, -0.007657f, -0.007096f, -0.006537f, -0.005980f,
-0.005425f, -0.004872f, -0.004322f, -0.003773f, -0.003227f, -0.002684f,
-0.002142f, -0.001603f, -0.001067f, -0.000532f, 0.000000f, 0.000530f,
0.001057f, 0.001582f, 0.002105f, 0.002625f, 0.003143f, 0.003658f,
0.004171f, 0.004681f, 0.005189f, 0.005695f, 0.006198f, 0.006698f,
0.007196f, 0.007692f, 0.008185f, 0.008675f, 0.009163f, 0.009648f,
0.010131f, 0.010611f, 0.011089f, 0.011564f, 0.012036f, 0.012506f,
0.012973f, 0.013438f, 0.013899f, 0.014358f, 0.014815f, 0.015269f,
0.015720f, 0.016168f, 0.016614f, 0.017057f, 0.017498f, 0.017935f,
0.018370f, 0.018802f, 0.019232f, 0.019658f, 0.020082f, 0.020503f,
0.020922f, 0.021337f, 0.021750f, 0.022160f, 0.022567f, 0.022972f,
0.023374f, 0.023772f, 0.024168f, 0.024562f, 0.024952f, 0.025340f,
0.025724f, 0.026106f, 0.026485f, 0.026861f, 0.027235f, 0.027605f,
0.027973f, 0.028338f, 0.028700f, 0.029059f, 0.029415f, 0.029768f,
0.030119f, 0.030466f, 0.030811f, 0.031152f, 0.031491f, 0.031827f,
0.032160f, 0.032491f, 0.032818f, 0.033142f, 0.033464f, 0.033782f,
0.034098f, 0.034411f, 0.034721f, 0.035028f, 0.035332f, 0.035633f,
0.035931f, 0.036227f, 0.036519f, 0.036809f, 0.037095f, 0.037379f,
0.037660f, 0.037938f, 0.038213f, 0.038485f, 0.038754f, 0.039020f,
0.039284f, 0.039544f, 0.039802f, 0.040056f, 0.040308f, 0.040557f,
0.040803f, 0.041046f, 0.041286f, 0.041524f, 0.041758f, 0.041990f,
0.042218f, 0.042444f, 0.042667f, 0.042887f, 0.043104f, 0.043318f,
0.043530f, 0.043738f, 0.043944f, 0.044147f, 0.044347f, 0.044544f,
0.044738f, 0.044930f, 0.045118f, 0.045304f, 0.045487f, 0.045667f,
0.045845f, 0.046019f, 0.046191f, 0.046360f, 0.046526f, 0.046689f,
0.046850f, 0.047008f, 0.047163f, 0.047315f, 0.047464f, 0.047611f,
0.047755f, 0.047896f, 0.048035f, 0.048170f, 0.048303f, 0.048434f,
0.048561f, 0.048686f, 0.048808f, 0.048927f, 0.049044f, 0.049158f,
0.049270f, 0.049378f, 0.049484f, 0.049588f, 0.049688f, 0.049786f,
0.049882f, 0.049975f, 0.050065f, 0.050152f, 0.050237f, 0.050320f,
0.050400f, 0.050477f, 0.050552f, 0.050624f, 0.050693f, 0.050760f,
0.050825f, 0.050887f, 0.050946f, 0.051003f, 0.051057f, 0.051109f,
0.051159f, 0.051206f, 0.051250f, 0.051292f, 0.051332f, 0.051369f,
0.051403f, 0.051436f, 0.051465f, 0.051493f, 0.051518f, 0.051541f,
0.051561f, 0.051579f, 0.051595f, 0.051608f, 0.051619f, 0.051627f,
0.051634f, 0.051638f, 0.051639f, 0.051639f, 0.051636f, 0.051631f,
0.051623f, 0.051614f, 0.051602f, 0.051588f, 0.051572f, 0.051553f,
0.051533f, 0.051510f, 0.051485f, 0.051458f, 0.051428f, 0.051397f,
0.051363f, 0.051328f, 0.051290f, 0.051250f, 0.051208f, 0.051164f,
0.051118f, 0.051070f, 0.051020f, 0.050968f, 0.050914f, 0.050858f,
0.050800f, 0.050740f, 0.050678f, 0.050614f, 0.050548f, 0.050480f,
0.050411f, 0.050339f, 0.050265f, 0.050190f, 0.050113f, 0.050034f,
0.049953f, 0.049870f, 0.049786f, 0.049699f, 0.049611f, 0.049521f,
0.049429f, 0.049336f, 0.049241f, 0.049144f, 0.049045f, 0.048945f,
0.048843f, 0.048739f, 0.048634f, 0.048527f, 0.048418f, 0.048308f,
0.048196f, 0.048083f, 0.047967f, 0.047851f, 0.047733f, 0.047613f,
0.047492f, 0.047369f, 0.047244f, 0.047118f, 0.046991f, 0.046862f,
0.046732f, 0.046600f, 0.046467f, 0.046333f, 0.046197f, 0.046059f,
0.045920f, 0.045780f, 0.045639f, 0.045496f, 0.045352f, 0.045206f,
0.045059f, 0.044911f, 0.044762f, 0.044611f, 0.044459f, 0.044306f,
0.044152f, 0.043996f, 0.043839f, 0.043681f, 0.043522f, 0.043362f,
0.043200f, 0.043038f, 0.042874f, 0.042709f, 0.042543f, 0.042376f,
0.042208f, 0.042038f, 0.041868f, 0.041697f, 0.041525f, 0.041351f,
0.041177f, 0.041002f, 0.040825f, 0.040648f, 0.040470f, 0.040291f,
0.040111f, 0.039930f, 0.039748f, 0.039565f, 0.039381f, 0.039197f,
0.039012f, 0.038825f, 0.038638f, 0.038451f, 0.038262f, 0.038073f,
0.037883f, 0.037692f, 0.037500f, 0.037308f, 0.037115f, 0.036921f,
0.036726f, 0.036531f, 0.036335f, 0.036139f, 0.035942f, 0.035744f,
0.035545f, 0.035346f, 0.035147f, 0.034947f, 0.034746f, 0.034544f,
0.034342f, 0.034140f, 0.033937f, 0.033734f, 0.033530f, 0.033325f,
0.033120f, 0.032915f, 0.032709f, 0.032503f, 0.032296f, 0.032089f,
0.031881f, 0.031673f, 0.031465f, 0.031256f, 0.031047f, 0.030838f,
0.030628f, 0.030418f, 0.030208f, 0.029997f, 0.029786f, 0.029575f,
0.029363f, 0.029151f, 0.028939f, 0.028727f, 0.028515f, 0.028302f,
0.028089f, 0.027876f, 0.027663f, 0.027449f, 0.027236f, 0.027022f,
0.026808f, 0.026594f, 0.026380f, 0.026166f, 0.025951f, 0.025737f,
0.025522f, 0.025308f, 0.025093f, 0.024879f, 0.024664f, 0.024449f,
0.024235f, 0.024020f, 0.023805f, 0.023590f, 0.023376f, 0.023161f,
0.022947f, 0.022732f, 0.022518f, 0.022303f, 0.022089f, 0.021875f,
0.021661f, 0.021447f, 0.021233f, 0.021019f, 0.020806f, 0.020593f,
0.020379f, 0.020166f, 0.019953f, 0.019741f, 0.019528f, 0.019316f,
0.019104f, 0.018892f, 0.018681f, 0.018469f, 0.018258f, 0.018047f,
0.017837f, 0.017627f, 0.017417f, 0.017207f, 0.016998f, 0.016789f,
0.016580f, 0.016371f, 0.016163f, 0.015956f, 0.015748f, 0.015541f,
0.015335f, 0.015129f, 0.014923f, 0.014717f, 0.014512f, 0.014308f,
0.014103f, 0.013900f, 0.013696f, 0.013493f, 0.013291f, 0.013089f,
0.012887f, 0.012686f, 0.012486f, 0.012286f, 0.012086f, 0.011887f,
0.011688f, 0.011490f, 0.011293f, 0.011096f, 0.010899f, 0.010703f,
0.010508f, 0.010313f, 0.010118f, 0.009925f, 0.009732f, 0.009539f,
0.009347f, 0.009156f, 0.008965f, 0.008775f, 0.008585f, 0.008396f,
0.008208f, 0.008020f, 0.007833f, 0.007646f, 0.007461f, 0.007275f,
0.007091f, 0.006907f, 0.006724f, 0.006541f, 0.006360f, 0.006178f,
0.005998f, 0.005818f, 0.005639f, 0.005461f, 0.005283f, 0.005106f,
0.004930f, 0.004755f, 0.004580f, 0.004406f, 0.004233f, 0.004060f,
0.003888f, 0.003717f, 0.003547f, 0.003377f, 0.003209f, 0.003041f,
0.002873f, 0.002707f, 0.002541f, 0.002376f, 0.002212f, 0.002049f,
0.001887f, 0.001725f, 0.001564f, 0.001404f, 0.001245f, 0.001086f,
0.000929f, 0.000772f, 0.000616f, 0.000461f, 0.000306f, 0.000153f,
-0.000000f, -0.000152f, -0.000303f, -0.000453f, -0.000602f, -0.000751f,
-0.000898f, -0.001045f, -0.001191f, -0.001336f, -0.001480f, -0.001623f,
-0.001766f, -0.001907f, -0.002048f, -0.002188f, -0.002327f, -0.002465f,
-0.002602f, -0.002738f, -0.002873f, -0.003008f, -0.003141f, -0.003274f,
-0.003406f, -0.003537f, -0.003667f, -0.003796f, -0.003924f, -0.004052f,
-0.004178f, -0.004303f, -0.004428f, -0.004552f, -0.004674f, -0.004796f,
-0.004917f, -0.005037f, -0.005156f, -0.005275f, -0.005392f, -0.005508f,
-0.005624f, -0.005738f, -0.005852f, -0.005965f, -0.006076f, -0.006187f,
-0.006297f, -0.006406f, -0.006514f, -0.006622f, -0.006728f, -0.006833f,
-0.006938f, -0.007041f, -0.007144f, -0.007245f, -0.007346f, -0.007446f,
-0.007545f, -0.007643f, -0.007740f, -0.007836f, -0.007931f, -0.008025f,
-0.008119f, -0.008211f, -0.008303f, -0.008393f, -0.008483f, -0.008572f,
-0.008659f, -0.008746f, -0.008832f, -0.008917f, -0.009001f, -0.009085f,
-0.009167f, -0.009248f, -0.009329f, -0.009409f, -0.009487f, -0.009565f,
-0.009642f, -0.009718f, -0.009793f, -0.009867f, -0.009940f, -0.010013f,
-0.010084f, -0.010155f, -0.010224f, -0.010293f, -0.010361f, -0.010428f,
-0.010494f, -0.010559f, -0.010623f, -0.010687f, -0.010749f, -0.010811f,
-0.010872f, -0.010931f, -0.010990f, -0.011049f, -0.011106f, -0.011162f,
-0.011218f, -0.011272f, -0.011326f, -0.011379f, -0.011431f, -0.011482f,
-0.011533f, -0.011582f, -0.011631f, -0.011679f, -0.011725f, -0.011772f,
-0.011817f, -0.011861f, -0.011905f, -0.011948f, -0.011989f, -0.012031f,
-0.012071f, -0.012110f, -0.012149f, -0.012187f, -0.012224f, -0.012260f,
-0.012295f, -0.012330f, -0.012363f, -0.012396f, -0.012428f, -0.012460f,
-0.012490f, -0.012520f, -0.012549f, -0.012577f, -0.012604f, -0.012631f,
-0.012657f, -0.012682f, -0.012706f, -0.012730f, -0.012752f, -0.012774f,
-0.012796f, -0.012816f, -0.012836f, -0.012855f, -0.012873f, -0.012891f,
-0.012907f, -0.012924f, -0.012939f, -0.012953f, -0.012967f, -0.012980f,
-0.012993f, -0.013005f, -0.013016f, -0.013026f, -0.013035f, -0.013044f,
-0.013053f, -0.013060f, -0.013067f, -0.013073f, -0.013078f, -0.013083f,
-0.013087f, -0.013091f, -0.013094f, -0.013096f, -0.013097f, -0.013098f,
-0.013098f, -0.013098f, -0.013096f, -0.013095f, -0.013092f, -0.013089f,
-0.013085f, -0.013081f, -0.013076f, -0.013071f, -0.013065f, -0.013058f,
-0.013050f, -0.013042f, -0.013034f, -0.013025f, -0.013015f, -0.013005f,
-0.012994f, -0.012982f, -0.012970f, -0.012958f, -0.012944f, -0.012931f,
-0.012916f, -0.012902f, -0.012886f, -0.012870f, -0.012854f, -0.012837f,
-0.012819f, -0.012801f, -0.012782f, -0.012763f, -0.012744f, -0.012723f,
-0.012703f, -0.012682f, -0.012660f, -0.012638f, -0.012615f, -0.012592f,
-0.012568f, -0.012544f, -0.012520f, -0.012495f, -0.012469f, -0.012443f,
-0.012417f, -0.012390f, -0.012362f, -0.012335f, -0.012306f, -0.012278f,
-0.012249f, -0.012219f, -0.012189f, -0.012159f, -0.012128f, -0.012097f,
-0.012065f, -0.012033f, -0.012001f, -0.011968f, -0.011935f, -0.011901f,
-0.011867f, -0.011833f, -0.011798f, -0.011763f, -0.011728f, -0.011692f,
-0.011656f, -0.011619f, -0.011582f, -0.011545f, -0.011507f, -0.011469f,
-0.011431f, -0.011393f, -0.011354f, -0.011314f, -0.011275f, -0.011235f,
-0.011195f, -0.011154f, -0.011114f, -0.011073f, -0.011031f, -0.010990f,
-0.010948f, -0.010905f, -0.010863f, -0.010820f, -0.010777f, -0.010734f,
-0.010690f, -0.010646f, -0.010602f, -0.010558f, -0.010513f, -0.010468f,
-0.010423f, -0.010378f, -0.010333f, -0.010287f, -0.010241f, -0.010195f,
-0.010148f, -0.010102f, -0.010055f, -0.010008f, -0.009961f, -0.009913f,
-0.009866f, -0.009818f, -0.009770f, -0.009722f, -0.009673f, -0.009625f,
-0.009576f, -0.009527f, -0.009478f, -0.009429f, -0.009380f, -0.009330f,
-0.009281f, -0.009231f, -0.009181f, -0.009131f, -0.009081f, -0.009030f,
-0.008980f, -0.008929f, -0.008879f, -0.008828f, -0.008777f, -0.008726f,
-0.008675f, -0.008624f, -0.008572f, -0.008521f, -0.008469f, -0.008418f,
-0.008366f, -0.008314f, -0.008263f, -0.008211f, -0.008159f, -0.008107f,
-0.008055f, -0.008002f, -0.007950f, -0.007898f, -0.007845f, -0.007793f,
-0.007741f, -0.007688f, -0.007636f, -0.007583f, -0.007531f, -0.007478f,
-0.007425f, -0.007373f, -0.007320f, -0.007267f, -0.007215f, -0.007162f,
-0.007109f, -0.007056f, -0.007004f, -0.006951f, -0.006898f, -0.006846f,
-0.006793f, -0.006740f, -0.006687f, -0.006635f, -0.006582f, -0.006530f,
-0.006477f, -0.006424f, -0.006372f, -0.006319f, -0.006267f, -0.006214f,
-0.006162f, -0.006110f, -0.006057f, -0.006005f, -0.005953f, -0.005901f,
-0.005849f, -0.005797f, -0.005745f, -0.005693f, -0.005641f, -0.005590f,
-0.005538f, -0.005486f, -0.005435f, -0.005383f, -0.005332f, -0.005281f,
-0.005230f, -0.005178f, -0.005127f, -0.005077f, -0.005026f, -0.004975f,
-0.004924f, -0.004874f, -0.004824f, -0.004773f, -0.004723f, -0.004673f,
-0.004623f, -0.004573f, -0.004523f, -0.004474f, -0.004424f, -0.004375f,
-0.004326f, -0.004277f, -0.004228f, -0.004179f, -0.004130f, -0.004082f,
-0.004033f, -0.003985f, -0.003937f, -0.003889f, -0.003841f, -0.003793f,
-0.003745f, -0.003698f, -0.003651f, -0.003604f, -0.003557f, -0.003510f,
-0.003463f, -0.003417f, -0.003370f, -0.003324f, -0.003278f, -0.003232f,
-0.003187f, -0.003141f, -0.003096f, -0.003051f, -0.003006f, -0.002961f,
-0.002916f, -0.002872f, -0.002827f, -0.002783f, -0.002739f, -0.002696f,
-0.002652f, -0.002609f, -0.002565f, -0.002522f, -0.002479f, -0.002437f,
-0.002394f, -0.002352f, -0.002310f, -0.002268f, -0.002227f, -0.002185f,
-0.002144f, -0.002103f, -0.002062f, -0.002021f, -0.001981f, -0.001940f,
-0.001900f, -0.001860f, -0.001821f, -0.001781f, -0.001742f, -0.001703f,
-0.001664f, -0.001625f, -0.001587f, -0.001549f, -0.001511f, -0.001473f,
-0.001435f, -0.001398f, -0.001361f, -0.001324f, -0.001287f, -0.001251f,
-0.001214f, -0.001178f, -0.001143f, -0.001107f, -0.001071f, -0.001036f,
-0.001001f, -0.000967f, -0.000932f, -0.000898f, -0.000864f, -0.000830f,
-0.000796f, -0.000763f, -0.000729f, -0.000696f, -0.000664f, -0.000631f,
-0.000599f, -0.000567f, -0.000535f, -0.000503f, -0.000472f, -0.000441f,
-0.000410f, -0.000379f, -0.000348f, -0.000318f, -0.000288f, -0.000258f,
-0.000229f, -0.000199f, -0.000170f, -0.000141f, -0.000112f, -0.000084f,
-0.000056f, -0.000028f, 0.000000f, 0.000028f, 0.000055f, 0.000082f,
0.000109f, 0.000136f, 0.000162f, 0.000188f, 0.000214f, 0.000240f,
0.000265f, 0.000291f, 0.000316f, 0.000340f, 0.000365f, 0.000389f,
0.000414f, 0.000438f, 0.000461f, 0.000485f, 0.000508f, 0.000531f,
0.000554f, 0.000576f, 0.000599f, 0.000621f, 0.000643f, 0.000664f,
0.000686f, 0.000707f, 0.000728f, 0.000749f, 0.000770f, 0.000790f,
0.000810f, 0.000830f, 0.000850f, 0.000869f, 0.000888f, 0.000907f,
0.000926f, 0.000945f, 0.000963f, 0.000981f, 0.000999f, 0.001017f,
0.001035f, 0.001052f, 0.001069f, 0.001086f, 0.001103f, 0.001119f,
0.001135f, 0.001151f, 0.001167f, 0.001183f, 0.001198f, 0.001214f,
0.001229f, 0.001243f, 0.001258f, 0.001272f, 0.001287f, 0.001301f,
0.001314f, 0.001328f, 0.001341f, 0.001355f, 0.001367f, 0.001380f,
0.001393f, 0.001405f, 0.001417f, 0.001429f, 0.001441f, 0.001453f,
0.001464f, 0.001475f, 0.001486f, 0.001497f, 0.001508f, 0.001518f,
0.001529f, 0.001539f, 0.001549f, 0.001558f, 0.001568f, 0.001577f,
0.001586f, 0.001595f, 0.001604f, 0.001613f, 0.001621f, 0.001629f,
0.001637f, 0.001645f, 0.001653f, 0.001660f, 0.001668f, 0.001675f,
0.001682f, 0.001689f, 0.001696f, 0.001702f, 0.001708f, 0.001715f,
0.001721f, 0.001726f, 0.001732f, 0.001738f, 0.001743f, 0.001748f,
0.001753f, 0.001758f, 0.001763f, 0.001767f, 0.001772f, 0.001776f,
0.001780f, 0.001784f, 0.001788f, 0.001791f, 0.001795f, 0.001798f,
0.001801f, 0.001804f, 0.001807f, 0.001810f, 0.001812f, 0.001815f,
0.001817f, 0.001819f, 0.001821f, 0.001823f, 0.001825f, 0.001826f,
0.001828f, 0.001829f, 0.001830f, 0.001831f, 0.001832f, 0.001833f,
0.001834f, 0.001834f, 0.001835f, 0.001835f, 0.001835f, 0.001835f,
0.001835f, 0.001835f, 0.001834f, 0.001834f, 0.001833f, 0.001833f,
0.001832f, 0.001831f, 0.001830f, 0.001829f, 0.001827f, 0.001826f,
0.001824f, 0.001823f, 0.001821f, 0.001819f, 0.001817f, 0.001815f,
0.001813f, 0.001811f, 0.001808f, 0.001806f, 0.001803f, 0.001801f,
0.001798f, 0.001795f, 0.001792f, 0.001789f, 0.001786f, 0.001783f,
0.001779f, 0.001776f, 0.001772f, 0.001769f, 0.001765f, 0.001761f,
0.001757f, 0.001753f, 0.001749f, 0.001745f, 0.001741f, 0.001737f,
0.001732f, 0.001728f, 0.001724f, 0.001719f, 0.001714f, 0.001710f,
0.001705f, 0.001700f, 0.001695f, 0.001690f, 0.001685f, 0.001680f,
0.001674f, 0.001669f, 0.001664f, 0.001658f, 0.001653f, 0.001647f,
0.001641f, 0.001636f, 0.001630f, 0.001624f, 0.001618f, 0.001612f,
0.001606f, 0.001600f, 0.001594f, 0.001588f, 0.001582f, 0.001576f,
0.001569f, 0.001563f, 0.001557f, 0.001550f, 0.001544f, 0.001537f,
0.001531f, 0.001524f, 0.001517f, 0.001511f, 0.001504f, 0.001497f,
0.001490f, 0.001483f, 0.001477f, 0.001470f, 0.001463f, 0.001456f,
0.001449f, 0.001441f, 0.001434f, 0.001427f, 0.001420f, 0.001413f,
0.001406f, 0.001398f, 0.001391f, 0.001384f, 0.001376f, 0.001369f,
0.001362f, 0.001354f, 0.001347f, 0.001339f, 0.001332f, 0.001324f,
0.001317f, 0.001309f, 0.001301f, 0.001294f, 0.001286f, 0.001279f,
0.001271f, 0.001263f, 0.001256f, 0.001248f, 0.001240f, 0.001233f,
0.001225f, 0.001217f, 0.001209f, 0.001202f, 0.001194f, 0.001186f,
0.001178f, 0.001171f, 0.001163f, 0.001155f, 0.001147f, 0.001140f,
0.001132f, 0.001124f, 0.001116f, 0.001108f, 0.001101f, 0.001093f,
0.001085f, 0.001077f, 0.001069f, 0.001062f, 0.001054f, 0.001046f,
0.001038f, 0.001031f, 0.001023f, 0.001015f, 0.001007f, 0.001000f,
0.000992f, 0.000984f, 0.000976f, 0.000969f, 0.000961f, 0.000953f,
0.000946f, 0.000938f, 0.000930f, 0.000923f, 0.000915f, 0.000907f,
0.000900f, 0.000892f, 0.000885f, 0.000877f, 0.000870f, 0.000862f,
0.000855f, 0.000847f, 0.000840f, 0.000832f, 0.000825f, 0.000817f,
0.000810f, 0.000803f, 0.000795f, 0.000788f, 0.000781f, 0.000773f,
0.000766f, 0.000759f, 0.000752f, 0.000744f, 0.000737f, 0.000730f,
0.000723f, 0.000716f, 0.000709f, 0.000702f, 0.000695f, 0.000688f,
0.000681f, 0.000674f, 0.000667f, 0.000660f, 0.000653f, 0.000646f,
0.000640f, 0.000633f, 0.000626f, 0.000619f, 0.000613f, 0.000606f,
0.000599f, 0.000593f, 0.000586f, 0.000580f, 0.000573f, 0.000567f,
0.000560f, 0.000554f, 0.000548f, 0.000541f, 0.000535f, 0.000529f,
0.000522f, 0.000516f, 0.000510f, 0.000504f, 0.000498f, 0.000492f,
0.000486f, 0.000480f, 0.000474f, 0.000468f, 0.000462f, 0.000456f,
0.000450f, 0.000444f, 0.000439f, 0.000433f, 0.000427f, 0.000422f,
0.000416f, 0.000410f, 0.000405f, 0.000399f, 0.000394f, 0.000389f,
0.000383f, 0.000378f, 0.000373f, 0.000367f, 0.000362f, 0.000357f,
0.000352f, 0.000347f, 0.000341f, 0.000336f, 0.000331f, 0.000326f,
0.000321f, 0.000317f, 0.000312f, 0.000307f, 0.000302f, 0.000297f,
0.000293f, 0.000288f, 0.000283f, 0.000279f, 0.000274f, 0.000270f,
0.000265f, 0.000261f, 0.000256f, 0.000252f, 0.000248f, 0.000243f,
0.000239f, 0.000235f, 0.000231f, 0.000227f, 0.000223f, 0.000218f,
0.000214f, 0.000210f, 0.000207f, 0.000203f, 0.000199f, 0.000195f,
0.000191f, 0.000187f, 0.000184f, 0.000180f, 0.000176f, 0.000173f,
0.000169f, 0.000166f, 0.000162f, 0.000159f, 0.000155f, 0.000152f,
0.000149f, 0.000145f, 0.000142f, 0.000139f, 0.000136f, 0.000132f,
0.000129f, 0.000126f, 0.000123f, 0.000120f, 0.000117f, 0.000114f,
0.000111f, 0.000109f, 0.000106f, 0.000103f, 0.000100f, 0.000097f,
0.000095f, 0.000092f, 0.000090f, 0.000087f, 0.000084f, 0.000082f,
0.000079f, 0.000077f, 0.000075f, 0.000072f, 0.000070f, 0.000068f,
0.000065f, 0.000063f, 0.000061f, 0.000059f, 0.000057f, 0.000054f,
0.000052f, 0.000050f, 0.000048f, 0.000046f, 0.000044f, 0.000042f,
0.000041f, 0.000039f, 0.000037f, 0.000035f, 0.000033f, 0.000032f,
0.000030f, 0.000028f, 0.000027f, 0.000025f, 0.000023f, 0.000022f,
0.000020f, 0.000019f, 0.000017f, 0.000016f, 0.000015f, 0.000013f,
0.000012f, 0.000011f, 0.000009f, 0.000008f, 0.000007f, 0.000006f,
0.000004f, 0.000003f, 0.000002f, 0.000001f, -0.000000f
};
static const float ResamplerFilterDifference[RESAMPLER_FILTER_SIZE] = {
-0.000006f, -0.000019f, -0.000033f, -0.000047f, -0.000060f, -0.000074f,
-0.000088f, -0.000101f, -0.000115f, -0.000129f, -0.000142f, -0.000156f,
-0.000170f, -0.000183f, -0.000197f, -0.000211f, -0.000224f, -0.000238f,
-0.000251f, -0.000265f, -0.000279f, -0.000292f, -0.000306f, -0.000319f,
-0.000333f, -0.000346f, -0.000360f, -0.000374f, -0.000387f, -0.000401f,
-0.000414f, -0.000428f, -0.000441f, -0.000454f, -0.000468f, -0.000481f,
-0.000495f, -0.000508f, -0.000522f, -0.000535f, -0.000548f, -0.000562f,
-0.000575f, -0.000589f, -0.000602f, -0.000615f, -0.000628f, -0.000642f,
-0.000655f, -0.000668f, -0.000681f, -0.000695f, -0.000708f, -0.000721f,
-0.000734f, -0.000747f, -0.000760f, -0.000773f, -0.000786f, -0.000799f,
-0.000812f, -0.000825f, -0.000838f, -0.000851f, -0.000864f, -0.000877f,
-0.000890f, -0.000903f, -0.000916f, -0.000929f, -0.000941f, -0.000954f,
-0.000967f, -0.000979f, -0.000992f, -0.001005f, -0.001017f, -0.001030f,
-0.001042f, -0.001055f, -0.001068f, -0.001080f, -0.001092f, -0.001105f,
-0.001117f, -0.001130f, -0.001142f, -0.001154f, -0.001166f, -0.001179f,
-0.001191f, -0.001203f, -0.001215f, -0.001228f, -0.001239f, -0.001251f,
-0.001264f, -0.001275f, -0.001287f, -0.001299f, -0.001311f, -0.001323f,
-0.001335f, -0.001347f, -0.001358f, -0.001370f, -0.001382f, -0.001393f,
-0.001405f, -0.001417f, -0.001428f, -0.001439f, -0.001451f, -0.001462f,
-0.001474f, -0.001485f, -0.001496f, -0.001507f, -0.001519f, -0.001530f,
-0.001541f, -0.001552f, -0.001563f, -0.001574f, -0.001585f, -0.001596f,
-0.001607f, -0.001617f, -0.001628f, -0.001639f, -0.001650f, -0.001660f,
-0.001671f, -0.001682f, -0.001692f, -0.001702f, -0.001713f, -0.001723f,
-0.001734f, -0.001744f, -0.001754f, -0.001764f, -0.001774f, -0.001785f,
-0.001795f, -0.001805f, -0.001815f, -0.001824f, -0.001834f, -0.001844f,
-0.001854f, -0.001864f, -0.001873f, -0.001883f, -0.001893f, -0.001902f,
-0.001912f, -0.001921f, -0.001930f, -0.001940f, -0.001949f, -0.001958f,
-0.001967f, -0.001976f, -0.001986f, -0.001994f, -0.002003f, -0.002012f,
-0.002021f, -0.002030f, -0.002039f, -0.002047f, -0.002056f, -0.002065f,
-0.002073f, -0.002082f, -0.002090f, -0.002099f, -0.002107f, -0.002115f,
-0.002123f, -0.002131f, -0.002140f, -0.002148f, -0.002156f, -0.002164f,
-0.002171f, -0.002179f, -0.002187f, -0.002195f, -0.002202f, -0.002210f,
-0.002218f, -0.002225f, -0.002232f, -0.002240f, -0.002247f, -0.002254f,
-0.002262f, -0.002269f, -0.002276f, -0.002283f, -0.002290f, -0.002297f,
-0.002303f, -0.002310f, -0.002317f, -0.002324f, -0.002330f, -0.002337f,
-0.002343f, -0.002350f, -0.002356f, -0.002362f, -0.002369f, -0.002375f,
-0.002381f, -0.002387f, -0.002393f, -0.002399f, -0.002405f, -0.002411f,
-0.002416f, -0.002422f, -0.002428f, -0.002433f, -0.002439f, -0.002444f,
-0.002450f, -0.002455f, -0.002460f, -0.002465f, -0.002471f, -0.002476f,
-0.002481f, -0.002486f, -0.002491f, -0.002496f, -0.002500f, -0.002505f,
-0.002510f, -0.002514f, -0.002519f, -0.002523f, -0.002528f, -0.002532f,
-0.002536f, -0.002540f, -0.002545f, -0.002549f, -0.002553f, -0.002557f,
-0.002561f, -0.002564f, -0.002568f, -0.002572f, -0.002576f, -0.002579f,
-0.002583f, -0.002586f, -0.002590f, -0.002593f, -0.002596f, -0.002599f,
-0.002603f, -0.002606f, -0.002609f, -0.002612f, -0.002614f, -0.002617f,
-0.002620f, -0.002623f, -0.002625f, -0.002628f, -0.002630f, -0.002633f,
-0.002635f, -0.002638f, -0.002640f, -0.002642f, -0.002644f, -0.002646f,
-0.002648f, -0.002650f, -0.002652f, -0.002654f, -0.002656f, -0.002657f,
-0.002659f, -0.002660f, -0.002662f, -0.002663f, -0.002665f, -0.002666f,
-0.002667f, -0.002669f, -0.002670f, -0.002671f, -0.002672f, -0.002673f,
-0.002673f, -0.002674f, -0.002675f, -0.002676f, -0.002676f, -0.002677f,
-0.002677f, -0.002678f, -0.002678f, -0.002679f, -0.002679f, -0.002679f,
-0.002679f, -0.002679f, -0.002679f, -0.002679f, -0.002679f, -0.002679f,
-0.002678f, -0.002678f, -0.002678f, -0.002677f, -0.002677f, -0.002676f,
-0.002676f, -0.002675f, -0.002674f, -0.002674f, -0.002673f, -0.002672f,
-0.002671f, -0.002670f, -0.002669f, -0.002667f, -0.002666f, -0.002665f,
-0.002664f, -0.002662f, -0.002661f, -0.002659f, -0.002658f, -0.002656f,
-0.002654f, -0.002653f, -0.002651f, -0.002649f, -0.002647f, -0.002645f,
-0.002643f, -0.002641f, -0.002639f, -0.002637f, -0.002634f, -0.002632f,
-0.002630f, -0.002627f, -0.002625f, -0.002622f, -0.002620f, -0.002617f,
-0.002614f, -0.002612f, -0.002609f, -0.002606f, -0.002603f, -0.002600f,
-0.002597f, -0.002594f, -0.002591f, -0.002587f, -0.002584f, -0.002581f,
-0.002577f, -0.002574f, -0.002571f, -0.002567f, -0.002563f, -0.002560f,
-0.002556f, -0.002552f, -0.002548f, -0.002545f, -0.002541f, -0.002537f,
-0.002533f, -0.002529f, -0.002525f, -0.002521f, -0.002516f, -0.002512f,
-0.002508f, -0.002503f, -0.002499f, -0.002495f, -0.002490f, -0.002486f,
-0.002481f, -0.002476f, -0.002472f, -0.002467f, -0.002462f, -0.002457f,
-0.002452f, -0.002447f, -0.002442f, -0.002437f, -0.002432f, -0.002427f,
-0.002422f, -0.002417f, -0.002411f, -0.002406f, -0.002401f, -0.002395f,
-0.002390f, -0.002384f, -0.002379f, -0.002373f, -0.002368f, -0.002362f,
-0.002356f, -0.002351f, -0.002345f, -0.002339f, -0.002333f, -0.002327f,
-0.002321f, -0.002315f, -0.002309f, -0.002303f, -0.002297f, -0.002291f,
-0.002285f, -0.002278f, -0.002272f, -0.002266f, -0.002259f, -0.002253f,
-0.002246f, -0.002240f, -0.002233f, -0.002227f, -0.002220f, -0.002214f,
-0.002207f, -0.002200f, -0.002193f, -0.002187f, -0.002180f, -0.002173f,
-0.002166f, -0.002159f, -0.002152f, -0.002145f, -0.002138f, -0.002131f,
-0.002124f, -0.002117f, -0.002110f, -0.002103f, -0.002095f, -0.002088f,
-0.002081f, -0.002073f, -0.002066f, -0.002059f, -0.002051f, -0.002044f,
-0.002036f, -0.002029f, -0.002021f, -0.002014f, -0.002006f, -0.001998f,
-0.001991f, -0.001983f, -0.001975f, -0.001967f, -0.001960f, -0.001952f,
-0.001944f, -0.001936f, -0.001928f, -0.001920f, -0.001913f, -0.001905f,
-0.001897f, -0.001889f, -0.001881f, -0.001872f, -0.001864f, -0.001856f,
-0.001848f, -0.001840f, -0.001832f, -0.001824f, -0.001815f, -0.001807f,
-0.001799f, -0.001791f, -0.001782f, -0.001774f, -0.001766f, -0.001757f,
-0.001749f, -0.001740f, -0.001732f, -0.001723f, -0.001715f, -0.001706f,
-0.001698f, -0.001689f, -0.001681f, -0.001672f, -0.001664f, -0.001655f,
-0.001647f, -0.001638f, -0.001629f, -0.001621f, -0.001612f, -0.001603f,
-0.001594f, -0.001586f, -0.001577f, -0.001568f, -0.001560f, -0.001551f,
-0.001542f, -0.001533f, -0.001524f, -0.001515f, -0.001507f, -0.001498f,
-0.001489f, -0.001480f, -0.001471f, -0.001462f, -0.001453f, -0.001444f,
-0.001436f, -0.001427f, -0.001418f, -0.001409f, -0.001400f, -0.001391f,
-0.001382f, -0.001373f, -0.001364f, -0.001355f, -0.001346f, -0.001337f,
-0.001328f, -0.001319f, -0.001310f, -0.001301f, -0.001292f, -0.001283f,
-0.001274f, -0.001265f, -0.001255f, -0.001246f, -0.001237f, -0.001228f,
-0.001219f, -0.001210f, -0.001201f, -0.001192f, -0.001183f, -0.001174f,
-0.001165f, -0.001156f, -0.001147f, -0.001138f, -0.001128f, -0.001119f,
-0.001110f, -0.001101f, -0.001092f, -0.001083f, -0.001074f, -0.001065f,
-0.001056f, -0.001047f, -0.001038f, -0.001029f, -0.001020f, -0.001011f,
-0.001002f, -0.000993f, -0.000984f, -0.000975f, -0.000965f, -0.000956f,
-0.000947f, -0.000938f, -0.000929f, -0.000920f, -0.000911f, -0.000902f,
-0.000894f, -0.000884f, -0.000876f, -0.000867f, -0.000858f, -0.000849f,
-0.000840f, -0.000831f, -0.000822f, -0.000813f, -0.000804f, -0.000795f,
-0.000787f, -0.000778f, -0.000769f, -0.000760f, -0.000751f, -0.000742f,
-0.000734f, -0.000725f, -0.000716f, -0.000707f, -0.000698f, -0.000690f,
-0.000681f, -0.000672f, -0.000664f, -0.000655f, -0.000646f, -0.000638f,
-0.000629f, -0.000620f, -0.000612f, -0.000603f, -0.000595f, -0.000586f,
-0.000578f, -0.000569f, -0.000560f, -0.000552f, -0.000544f, -0.000535f,
-0.000527f, -0.000518f, -0.000510f, -0.000501f, -0.000493f, -0.000485f,
-0.000476f, -0.000468f, -0.000460f, -0.000451f, -0.000443f, -0.000435f,
-0.000427f, -0.000419f, -0.000410f, -0.000402f, -0.000394f, -0.000386f,
-0.000378f, -0.000370f, -0.000362f, -0.000354f, -0.000346f, -0.000338f,
-0.000330f, -0.000322f, -0.000314f, -0.000306f, -0.000298f, -0.000290f,
-0.000283f, -0.000275f, -0.000267f, -0.000259f, -0.000251f, -0.000244f,
-0.000236f, -0.000228f, -0.000221f, -0.000213f, -0.000206f, -0.000198f,
-0.000191f, -0.000183f, -0.000176f, -0.000168f, -0.000161f, -0.000153f,
-0.000146f, -0.000139f, -0.000131f, -0.000124f, -0.000117f, -0.000110f,
-0.000102f, -0.000095f, -0.000088f, -0.000081f, -0.000074f, -0.000067f,
-0.000060f, -0.000053f, -0.000046f, -0.000039f, -0.000032f, -0.000025f,
-0.000018f, -0.000011f, -0.000004f, 0.000002f, 0.000009f, 0.000016f,
0.000022f, 0.000029f, 0.000036f, 0.000042f, 0.000049f, 0.000055f,
0.000062f, 0.000068f, 0.000075f, 0.000081f, 0.000088f, 0.000094f,
0.000100f, 0.000107f, 0.000113f, 0.000119f, 0.000125f, 0.000131f,
0.000138f, 0.000144f, 0.000150f, 0.000156f, 0.000162f, 0.000168f,
0.000174f, 0.000179f, 0.000185f, 0.000191f, 0.000197f, 0.000203f,
0.000208f, 0.000214f, 0.000220f, 0.000225f, 0.000231f, 0.000237f,
0.000242f, 0.000248f, 0.000253f, 0.000258f, 0.000264f, 0.000269f,
0.000275f, 0.000280f, 0.000285f, 0.000290f, 0.000295f, 0.000301f,
0.000306f, 0.000311f, 0.000316f, 0.000321f, 0.000326f, 0.000331f,
0.000336f, 0.000341f, 0.000345f, 0.000350f, 0.000355f, 0.000360f,
0.000364f, 0.000369f, 0.000374f, 0.000378f, 0.000383f, 0.000387f,
0.000392f, 0.000396f, 0.000401f, 0.000405f, 0.000410f, 0.000414f,
0.000418f, 0.000422f, 0.000427f, 0.000431f, 0.000435f, 0.000439f,
0.000443f, 0.000447f, 0.000451f, 0.000455f, 0.000459f, 0.000463f,
0.000467f, 0.000470f, 0.000474f, 0.000478f, 0.000482f, 0.000485f,
0.000489f, 0.000493f, 0.000496f, 0.000500f, 0.000503f, 0.000507f,
0.000510f, 0.000513f, 0.000517f, 0.000520f, 0.000523f, 0.000527f,
0.000530f, 0.000533f, 0.000536f, 0.000539f, 0.000542f, 0.000545f,
0.000548f, 0.000551f, 0.000554f, 0.000557f, 0.000560f, 0.000563f,
0.000565f, 0.000568f, 0.000571f, 0.000574f, 0.000576f, 0.000579f,
0.000581f, 0.000584f, 0.000586f, 0.000589f, 0.000591f, 0.000594f,
0.000596f, 0.000598f, 0.000601f, 0.000603f, 0.000605f, 0.000607f,
0.000609f, 0.000612f, 0.000614f, 0.000616f, 0.000618f, 0.000620f,
0.000622f, 0.000624f, 0.000625f, 0.000627f, 0.000629f, 0.000631f,
0.000633f, 0.000634f, 0.000636f, 0.000638f, 0.000639f, 0.000641f,
0.000642f, 0.000644f, 0.000645f, 0.000647f, 0.000648f, 0.000649f,
0.000651f, 0.000652f, 0.000653f, 0.000655f, 0.000656f, 0.000657f,
0.000658f, 0.000659f, 0.000660f, 0.000661f, 0.000662f, 0.000663f,
0.000664f, 0.000665f, 0.000666f, 0.000667f, 0.000668f, 0.000668f,
0.000669f, 0.000670f, 0.000671f, 0.000671f, 0.000672f, 0.000673f,
0.000673f, 0.000674f, 0.000674f, 0.000675f, 0.000675f, 0.000675f,
0.000676f, 0.000676f, 0.000677f, 0.000677f, 0.000677f, 0.000677f,
0.000678f, 0.000678f, 0.000678f, 0.000678f, 0.000678f, 0.000678f,
0.000678f, 0.000678f, 0.000678f, 0.000678f, 0.000678f, 0.000678f,
0.000678f, 0.000678f, 0.000677f, 0.000677f, 0.000677f, 0.000677f,
0.000676f, 0.000676f, 0.000676f, 0.000675f, 0.000675f, 0.000674f,
0.000674f, 0.000673f, 0.000673f, 0.000672f, 0.000672f, 0.000671f,
0.000670f, 0.000670f, 0.000669f, 0.000668f, 0.000668f, 0.000667f,
0.000666f, 0.000665f, 0.000664f, 0.000664f, 0.000663f, 0.000662f,
0.000661f, 0.000660f, 0.000659f, 0.000658f, 0.000657f, 0.000656f,
0.000655f, 0.000654f, 0.000653f, 0.000651f, 0.000650f, 0.000649f,
0.000648f, 0.000647f, 0.000645f, 0.000644f, 0.000643f, 0.000641f,
0.000640f, 0.000639f, 0.000637f, 0.000636f, 0.000634f, 0.000633f,
0.000632f, 0.000630f, 0.000629f, 0.000627f, 0.000625f, 0.000624f,
0.000622f, 0.000621f, 0.000619f, 0.000617f, 0.000616f, 0.000614f,
0.000612f, 0.000611f, 0.000609f, 0.000607f, 0.000605f, 0.000603f,
0.000602f, 0.000600f, 0.000598f, 0.000596f, 0.000594f, 0.000592f,
0.000590f, 0.000588f, 0.000586f, 0.000584f, 0.000582f, 0.000580f,
0.000578f, 0.000576f, 0.000574f, 0.000572f, 0.000570f, 0.000568f,
0.000566f, 0.000564f, 0.000561f, 0.000559f, 0.000557f, 0.000555f,
0.000553f, 0.000550f, 0.000548f, 0.000546f, 0.000544f, 0.000541f,
0.000539f, 0.000537f, 0.000534f, 0.000532f, 0.000530f, 0.000527f,
0.000525f, 0.000523f, 0.000520f, 0.000518f, 0.000515f, 0.000513f,
0.000510f, 0.000508f, 0.000506f, 0.000503f, 0.000501f, 0.000498f,
0.000495f, 0.000493f, 0.000490f, 0.000488f, 0.000485f, 0.000483f,
0.000480f, 0.000478f, 0.000475f, 0.000472f, 0.000470f, 0.000467f,
0.000464f, 0.000462f, 0.000459f, 0.000456f, 0.000454f, 0.000451f,
0.000448f, 0.000446f, 0.000443f, 0.000440f, 0.000438f, 0.000435f,
0.000432f, 0.000429f, 0.000427f, 0.000424f, 0.000421f, 0.000418f,
0.000416f, 0.000413f, 0.000410f, 0.000407f, 0.000404f, 0.000402f,
0.000399f, 0.000396f, 0.000393f, 0.000390f, 0.000388f, 0.000385f,
0.000382f, 0.000379f, 0.000376f, 0.000373f, 0.000370f, 0.000368f,
0.000365f, 0.000362f, 0.000359f, 0.000356f, 0.000353f, 0.000350f,
0.000348f, 0.000345f, 0.000342f, 0.000339f, 0.000336f, 0.000333f,
0.000330f, 0.000327f, 0.000324f, 0.000322f, 0.000319f, 0.000316f,
0.000313f, 0.000310f, 0.000307f, 0.000304f, 0.000301f, 0.000298f,
0.000295f, 0.000292f, 0.000290f, 0.000287f, 0.000284f, 0.000281f,
0.000278f, 0.000275f, 0.000272f, 0.000269f, 0.000266f, 0.000263f,
0.000260f, 0.000258f, 0.000255f, 0.000252f, 0.000249f, 0.000246f,
0.000243f, 0.000240f, 0.000237f, 0.000234f, 0.000232f, 0.000229f,
0.000226f, 0.000223f, 0.000220f, 0.000217f, 0.000214f, 0.000211f,
0.000209f, 0.000206f, 0.000203f, 0.000200f, 0.000197f, 0.000194f,
0.000191f, 0.000189f, 0.000186f, 0.000183f, 0.000180f, 0.000177f,
0.000175f, 0.000172f, 0.000169f, 0.000166f, 0.000163f, 0.000161f,
0.000158f, 0.000155f, 0.000152f, 0.000149f, 0.000147f, 0.000144f,
0.000141f, 0.000138f, 0.000136f, 0.000133f, 0.000130f, 0.000128f,
0.000125f, 0.000122f, 0.000119f, 0.000117f, 0.000114f, 0.000111f,
0.000109f, 0.000106f, 0.000103f, 0.000101f, 0.000098f, 0.000095f,
0.000093f, 0.000090f, 0.000088f, 0.000085f, 0.000082f, 0.000080f,
0.000077f, 0.000075f, 0.000072f, 0.000070f, 0.000067f, 0.000064f,
0.000062f, 0.000059f, 0.000057f, 0.000054f, 0.000052f, 0.000049f,
0.000047f, 0.000044f, 0.000042f, 0.000040f, 0.000037f, 0.000035f,
0.000032f, 0.000030f, 0.000027f, 0.000025f, 0.000023f, 0.000020f,
0.000018f, 0.000016f, 0.000013f, 0.000011f, 0.000009f, 0.000006f,
0.000004f, 0.000002f, -0.000001f, -0.000003f, -0.000005f, -0.000007f,
-0.000010f, -0.000012f, -0.000014f, -0.000016f, -0.000018f, -0.000021f,
-0.000023f, -0.000025f, -0.000027f, -0.000029f, -0.000031f, -0.000034f,
-0.000036f, -0.000038f, -0.000040f, -0.000042f, -0.000044f, -0.000046f,
-0.000048f, -0.000050f, -0.000052f, -0.000054f, -0.000056f, -0.000058f,
-0.000060f, -0.000062f, -0.000064f, -0.000066f, -0.000068f, -0.000070f,
-0.000072f, -0.000073f, -0.000075f, -0.000077f, -0.000079f, -0.000081f,
-0.000083f, -0.000085f, -0.000086f, -0.000088f, -0.000090f, -0.000092f,
-0.000093f, -0.000095f, -0.000097f, -0.000099f, -0.000100f, -0.000102f,
-0.000104f, -0.000105f, -0.000107f, -0.000109f, -0.000110f, -0.000112f,
-0.000113f, -0.000115f, -0.000117f, -0.000118f, -0.000120f, -0.000121f,
-0.000123f, -0.000124f, -0.000126f, -0.000127f, -0.000129f, -0.000130f,
-0.000132f, -0.000133f, -0.000135f, -0.000136f, -0.000137f, -0.000139f,
-0.000140f, -0.000142f, -0.000143f, -0.000144f, -0.000146f, -0.000147f,
-0.000148f, -0.000149f, -0.000151f, -0.000152f, -0.000153f, -0.000154f,
-0.000156f, -0.000157f, -0.000158f, -0.000159f, -0.000160f, -0.000162f,
-0.000163f, -0.000164f, -0.000165f, -0.000166f, -0.000167f, -0.000168f,
-0.000169f, -0.000170f, -0.000171f, -0.000172f, -0.000173f, -0.000174f,
-0.000175f, -0.000176f, -0.000177f, -0.000178f, -0.000179f, -0.000180f,
-0.000181f, -0.000182f, -0.000183f, -0.000184f, -0.000184f, -0.000185f,
-0.000186f, -0.000187f, -0.000188f, -0.000189f, -0.000189f, -0.000190f,
-0.000191f, -0.000192f, -0.000192f, -0.000193f, -0.000194f, -0.000195f,
-0.000195f, -0.000196f, -0.000197f, -0.000197f, -0.000198f, -0.000198f,
-0.000199f, -0.000200f, -0.000200f, -0.000201f, -0.000201f, -0.000202f,
-0.000202f, -0.000203f, -0.000203f, -0.000204f, -0.000204f, -0.000205f,
-0.000205f, -0.000206f, -0.000206f, -0.000207f, -0.000207f, -0.000208f,
-0.000208f, -0.000208f, -0.000209f, -0.000209f, -0.000209f, -0.000210f,
-0.000210f, -0.000210f, -0.000211f, -0.000211f, -0.000211f, -0.000212f,
-0.000212f, -0.000212f, -0.000212f, -0.000212f, -0.000213f, -0.000213f,
-0.000213f, -0.000213f, -0.000213f, -0.000214f, -0.000214f, -0.000214f,
-0.000214f, -0.000214f, -0.000214f, -0.000214f, -0.000214f, -0.000214f,
-0.000215f, -0.000215f, -0.000215f, -0.000215f, -0.000215f, -0.000215f,
-0.000215f, -0.000215f, -0.000215f, -0.000215f, -0.000215f, -0.000215f,
-0.000215f, -0.000214f, -0.000214f, -0.000214f, -0.000214f, -0.000214f,
-0.000214f, -0.000214f, -0.000214f, -0.000214f, -0.000213f, -0.000213f,
-0.000213f, -0.000213f, -0.000213f, -0.000212f, -0.000212f, -0.000212f,
-0.000212f, -0.000212f, -0.000211f, -0.000211f, -0.000211f, -0.000211f,
-0.000210f, -0.000210f, -0.000210f, -0.000209f, -0.000209f, -0.000209f,
-0.000208f, -0.000208f, -0.000208f, -0.000207f, -0.000207f, -0.000207f,
-0.000206f, -0.000206f, -0.000205f, -0.000205f, -0.000205f, -0.000204f,
-0.000204f, -0.000203f, -0.000203f, -0.000202f, -0.000202f, -0.000202f,
-0.000201f, -0.000201f, -0.000200f, -0.000200f, -0.000199f, -0.000199f,
-0.000198f, -0.000198f, -0.000197f, -0.000197f, -0.000196f, -0.000195f,
-0.000195f, -0.000194f, -0.000194f, -0.000193f, -0.000193f, -0.000192f,
-0.000191f, -0.000191f, -0.000190f, -0.000190f, -0.000189f, -0.000188f,
-0.000188f, -0.000187f, -0.000186f, -0.000186f, -0.000185f, -0.000184f,
-0.000184f, -0.000183f, -0.000182f, -0.000182f, -0.000181f, -0.000180f,
-0.000180f, -0.000179f, -0.000178f, -0.000178f, -0.000177f, -0.000176f,
-0.000175f, -0.000175f, -0.000174f, -0.000173f, -0.000173f, -0.000172f,
-0.000171f, -0.000170f, -0.000170f, -0.000169f, -0.000168f, -0.000167f,
-0.000166f, -0.000166f, -0.000165f, -0.000164f, -0.000163f, -0.000163f,
-0.000162f, -0.000161f, -0.000160f, -0.000159f, -0.000158f, -0.000158f,
-0.000157f, -0.000156f, -0.000155f, -0.000154f, -0.000154f, -0.000153f,
-0.000152f, -0.000151f, -0.000150f, -0.000149f, -0.000148f, -0.000148f,
-0.000147f, -0.000146f, -0.000145f, -0.000144f, -0.000143f, -0.000142f,
-0.000142f, -0.000141f, -0.000140f, -0.000139f, -0.000138f, -0.000137f,
-0.000136f, -0.000135f, -0.000134f, -0.000134f, -0.000133f, -0.000132f,
-0.000131f, -0.000130f, -0.000129f, -0.000128f, -0.000127f, -0.000126f,
-0.000125f, -0.000125f, -0.000124f, -0.000123f, -0.000122f, -0.000121f,
-0.000120f, -0.000119f, -0.000118f, -0.000117f, -0.000116f, -0.000115f,
-0.000115f, -0.000114f, -0.000113f, -0.000112f, -0.000111f, -0.000110f,
-0.000109f, -0.000108f, -0.000107f, -0.000106f, -0.000105f, -0.000104f,
-0.000103f, -0.000103f, -0.000102f, -0.000101f, -0.000100f, -0.000099f,
-0.000098f, -0.000097f, -0.000096f, -0.000095f, -0.000094f, -0.000093f,
-0.000092f, -0.000092f, -0.000091f, -0.000090f, -0.000089f, -0.000088f,
-0.000087f, -0.000086f, -0.000085f, -0.000084f, -0.000083f, -0.000082f,
-0.000081f, -0.000080f, -0.000080f, -0.000079f, -0.000078f, -0.000077f,
-0.000076f, -0.000075f, -0.000074f, -0.000073f, -0.000072f, -0.000071f,
-0.000071f, -0.000070f, -0.000069f, -0.000068f, -0.000067f, -0.000066f,
-0.000065f, -0.000064f, -0.000063f, -0.000063f, -0.000062f, -0.000061f,
-0.000060f, -0.000059f, -0.000058f, -0.000057f, -0.000056f, -0.000056f,
-0.000055f, -0.000054f, -0.000053f, -0.000052f, -0.000051f, -0.000050f,
-0.000049f, -0.000049f, -0.000048f, -0.000047f, -0.000046f, -0.000045f,
-0.000044f, -0.000044f, -0.000043f, -0.000042f, -0.000041f, -0.000040f,
-0.000039f, -0.000039f, -0.000038f, -0.000037f, -0.000036f, -0.000035f,
-0.000035f, -0.000034f, -0.000033f, -0.000032f, -0.000031f, -0.000031f,
-0.000030f, -0.000029f, -0.000028f, -0.000027f, -0.000027f, -0.000026f,
-0.000025f, -0.000024f, -0.000024f, -0.000023f, -0.000022f, -0.000021f,
-0.000020f, -0.000020f, -0.000019f, -0.000018f, -0.000018f, -0.000017f,
-0.000016f, -0.000015f, -0.000015f, -0.000014f, -0.000013f, -0.000012f,
-0.000012f, -0.000011f, -0.000010f, -0.000010f, -0.000009f, -0.000008f,
-0.000008f, -0.000007f, -0.000006f, -0.000005f, -0.000005f, -0.000004f,
-0.000003f, -0.000003f, -0.000002f, -0.000001f, -0.000001f, -0.000000f,
0.000001f, 0.000001f, 0.000002f, 0.000002f, 0.000003f, 0.000004f,
0.000004f, 0.000005f, 0.000006f, 0.000006f, 0.000007f, 0.000007f,
0.000008f, 0.000009f, 0.000009f, 0.000010f, 0.000010f, 0.000011f,
0.000011f, 0.000012f, 0.000013f, 0.000013f, 0.000014f, 0.000014f,
0.000015f, 0.000015f, 0.000016f, 0.000016f, 0.000017f, 0.000018f,
0.000018f, 0.000019f, 0.000019f, 0.000020f, 0.000020f, 0.000021f,
0.000021f, 0.000022f, 0.000022f, 0.000023f, 0.000023f, 0.000024f,
0.000024f, 0.000025f, 0.000025f, 0.000026f, 0.000026f, 0.000026f,
0.000027f, 0.000027f, 0.000028f, 0.000028f, 0.000029f, 0.000029f,
0.000030f, 0.000030f, 0.000030f, 0.000031f, 0.000031f, 0.000032f,
0.000032f, 0.000032f, 0.000033f, 0.000033f, 0.000034f, 0.000034f,
0.000034f, 0.000035f, 0.000035f, 0.000035f, 0.000036f, 0.000036f,
0.000037f, 0.000037f, 0.000037f, 0.000038f, 0.000038f, 0.000038f,
0.000039f, 0.000039f, 0.000039f, 0.000040f, 0.000040f, 0.000040f,
0.000040f, 0.000041f, 0.000041f, 0.000041f, 0.000042f, 0.000042f,
0.000042f, 0.000043f, 0.000043f, 0.000043f, 0.000043f, 0.000044f,
0.000044f, 0.000044f, 0.000044f, 0.000045f, 0.000045f, 0.000045f,
0.000045f, 0.000046f, 0.000046f, 0.000046f, 0.000046f, 0.000046f,
0.000047f, 0.000047f, 0.000047f, 0.000047f, 0.000047f, 0.000048f,
0.000048f, 0.000048f, 0.000048f, 0.000048f, 0.000049f, 0.000049f,
0.000049f, 0.000049f, 0.000049f, 0.000049f, 0.000049f, 0.000050f,
0.000050f, 0.000050f, 0.000050f, 0.000050f, 0.000050f, 0.000050f,
0.000051f, 0.000051f, 0.000051f, 0.000051f, 0.000051f, 0.000051f,
0.000051f, 0.000051f, 0.000051f, 0.000052f, 0.000052f, 0.000052f,
0.000052f, 0.000052f, 0.000052f, 0.000052f, 0.000052f, 0.000052f,
0.000052f, 0.000052f, 0.000052f, 0.000052f, 0.000052f, 0.000052f,
0.000052f, 0.000053f, 0.000053f, 0.000053f, 0.000053f, 0.000053f,
0.000053f, 0.000053f, 0.000053f, 0.000053f, 0.000053f, 0.000053f,
0.000053f, 0.000053f, 0.000053f, 0.000053f, 0.000053f, 0.000053f,
0.000053f, 0.000053f, 0.000053f, 0.000053f, 0.000053f, 0.000053f,
0.000053f, 0.000053f, 0.000052f, 0.000052f, 0.000052f, 0.000052f,
0.000052f, 0.000052f, 0.000052f, 0.000052f, 0.000052f, 0.000052f,
0.000052f, 0.000052f, 0.000052f, 0.000052f, 0.000052f, 0.000052f,
0.000052f, 0.000052f, 0.000051f, 0.000051f, 0.000051f, 0.000051f,
0.000051f, 0.000051f, 0.000051f, 0.000051f, 0.000051f, 0.000051f,
0.000051f, 0.000050f, 0.000050f, 0.000050f, 0.000050f, 0.000050f,
0.000050f, 0.000050f, 0.000050f, 0.000049f, 0.000049f, 0.000049f,
0.000049f, 0.000049f, 0.000049f, 0.000049f, 0.000049f, 0.000048f,
0.000048f, 0.000048f, 0.000048f, 0.000048f, 0.000048f, 0.000048f,
0.000047f, 0.000047f, 0.000047f, 0.000047f, 0.000047f, 0.000047f,
0.000047f, 0.000046f, 0.000046f, 0.000046f, 0.000046f, 0.000046f,
0.000046f, 0.000045f, 0.000045f, 0.000045f, 0.000045f, 0.000045f,
0.000044f, 0.000044f, 0.000044f, 0.000044f, 0.000044f, 0.000044f,
0.000043f, 0.000043f, 0.000043f, 0.000043f, 0.000043f, 0.000042f,
0.000042f, 0.000042f, 0.000042f, 0.000042f, 0.000041f, 0.000041f,
0.000041f, 0.000041f, 0.000041f, 0.000040f, 0.000040f, 0.000040f,
0.000040f, 0.000040f, 0.000039f, 0.000039f, 0.000039f, 0.000039f,
0.000039f, 0.000038f, 0.000038f, 0.000038f, 0.000038f, 0.000038f,
0.000037f, 0.000037f, 0.000037f, 0.000037f, 0.000037f, 0.000036f,
0.000036f, 0.000036f, 0.000036f, 0.000035f, 0.000035f, 0.000035f,
0.000035f, 0.000035f, 0.000034f, 0.000034f, 0.000034f, 0.000034f,
0.000033f, 0.000033f, 0.000033f, 0.000033f, 0.000033f, 0.000032f,
0.000032f, 0.000032f, 0.000032f, 0.000031f, 0.000031f, 0.000031f,
0.000031f, 0.000031f, 0.000030f, 0.000030f, 0.000030f, 0.000030f,
0.000029f, 0.000029f, 0.000029f, 0.000029f, 0.000028f, 0.000028f,
0.000028f, 0.000028f, 0.000028f, 0.000027f, 0.000027f, 0.000027f,
0.000027f, 0.000026f, 0.000026f, 0.000026f, 0.000026f, 0.000026f,
0.000025f, 0.000025f, 0.000025f, 0.000025f, 0.000024f, 0.000024f,
0.000024f, 0.000024f, 0.000023f, 0.000023f, 0.000023f, 0.000023f,
0.000023f, 0.000022f, 0.000022f, 0.000022f, 0.000022f, 0.000021f,
0.000021f, 0.000021f, 0.000021f, 0.000021f, 0.000020f, 0.000020f,
0.000020f, 0.000020f, 0.000019f, 0.000019f, 0.000019f, 0.000019f,
0.000019f, 0.000018f, 0.000018f, 0.000018f, 0.000018f, 0.000018f,
0.000017f, 0.000017f, 0.000017f, 0.000017f, 0.000016f, 0.000016f,
0.000016f, 0.000016f, 0.000016f, 0.000015f, 0.000015f, 0.000015f,
0.000015f, 0.000015f, 0.000014f, 0.000014f, 0.000014f, 0.000014f,
0.000014f, 0.000013f, 0.000013f, 0.000013f, 0.000013f, 0.000013f,
0.000012f, 0.000012f, 0.000012f, 0.000012f, 0.000012f, 0.000011f,
0.000011f, 0.000011f, 0.000011f, 0.000011f, 0.000010f, 0.000010f,
0.000010f, 0.000010f, 0.000010f, 0.000010f, 0.000009f, 0.000009f,
0.000009f, 0.000009f, 0.000009f, 0.000008f, 0.000008f, 0.000008f,
0.000008f, 0.000008f, 0.000008f, 0.000007f, 0.000007f, 0.000007f,
0.000007f, 0.000007f, 0.000007f, 0.000006f, 0.000006f, 0.000006f,
0.000006f, 0.000006f, 0.000006f, 0.000005f, 0.000005f, 0.000005f,
0.000005f, 0.000005f, 0.000005f, 0.000004f, 0.000004f, 0.000004f,
0.000004f, 0.000004f, 0.000004f, 0.000003f, 0.000003f, 0.000003f,
0.000003f, 0.000003f, 0.000003f, 0.000003f, 0.000002f, 0.000002f,
0.000002f, 0.000002f, 0.000002f, 0.000002f, 0.000002f, 0.000001f,
0.000001f, 0.000001f, 0.000001f, 0.000001f, 0.000001f, 0.000001f,
0.000001f, 0.000000f, 0.000000f, 0.000000f, 0.000000f, -0.000000f,
-0.000000f, -0.000000f, -0.000000f, -0.000001f, -0.000001f, -0.000001f,
-0.000001f, -0.000001f, -0.000001f, -0.000001f, -0.000001f, -0.000002f,
-0.000002f, -0.000002f, -0.000002f, -0.000002f, -0.000002f, -0.000002f,
-0.000002f, -0.000002f, -0.000002f, -0.000003f, -0.000003f, -0.000003f,
-0.000003f, -0.000003f, -0.000003f, -0.000003f, -0.000003f, -0.000003f,
-0.000003f, -0.000004f, -0.000004f, -0.000004f, -0.000004f, -0.000004f,
-0.000004f, -0.000004f, -0.000004f, -0.000004f, -0.000004f, -0.000004f,
-0.000004f, -0.000005f, -0.000005f, -0.000005f, -0.000005f, -0.000005f,
-0.000005f, -0.000005f, -0.000005f, -0.000005f, -0.000005f, -0.000005f,
-0.000005f, -0.000005f, -0.000005f, -0.000006f, -0.000006f, -0.000006f,
-0.000006f, -0.000006f, -0.000006f, -0.000006f, -0.000006f, -0.000006f,
-0.000006f, -0.000006f, -0.000006f, -0.000006f, -0.000006f, -0.000006f,
-0.000006f, -0.000006f, -0.000006f, -0.000006f, -0.000007f, -0.000007f,
-0.000007f, -0.000007f, -0.000007f, -0.000007f, -0.000007f, -0.000007f,
-0.000007f, -0.000007f, -0.000007f, -0.000007f, -0.000007f, -0.000007f,
-0.000007f, -0.000007f, -0.000007f, -0.000007f, -0.000007f, -0.000007f,
-0.000007f, -0.000007f, -0.000007f, -0.000007f, -0.000007f, -0.000007f,
-0.000007f, -0.000007f, -0.000007f, -0.000007f, -0.000008f, -0.000008f,
-0.000008f, -0.000008f, -0.000008f, -0.000008f, -0.000008f, -0.000008f,
-0.000008f, -0.000008f, -0.000008f, -0.000008f, -0.000008f, -0.000008f,
-0.000008f, -0.000008f, -0.000008f, -0.000008f, -0.000008f, -0.000008f,
-0.000008f, -0.000008f, -0.000008f, -0.000008f, -0.000008f, -0.000008f,
-0.000008f, -0.000008f, -0.000008f, -0.000008f, -0.000008f, -0.000008f,
-0.000008f, -0.000008f, -0.000008f, -0.000008f, -0.000008f, -0.000008f,
-0.000008f, -0.000008f, -0.000008f, -0.000008f, -0.000008f, -0.000008f,
-0.000008f, -0.000008f, -0.000008f, -0.000008f, -0.000008f, -0.000008f,
-0.000008f, -0.000008f, -0.000008f, -0.000008f, -0.000008f, -0.000008f,
-0.000008f, -0.000008f, -0.000008f, -0.000008f, -0.000008f, -0.000008f,
-0.000007f, -0.000007f, -0.000007f, -0.000007f, -0.000007f, -0.000007f,
-0.000007f, -0.000007f, -0.000007f, -0.000007f, -0.000007f, -0.000007f,
-0.000007f, -0.000007f, -0.000007f, -0.000007f, -0.000007f, -0.000007f,
-0.000007f, -0.000007f, -0.000007f, -0.000007f, -0.000007f, -0.000007f,
-0.000007f, -0.000007f, -0.000007f, -0.000007f, -0.000007f, -0.000007f,
-0.000007f, -0.000007f, -0.000007f, -0.000007f, -0.000007f, -0.000007f,
-0.000007f, -0.000007f, -0.000007f, -0.000006f, -0.000006f, -0.000006f,
-0.000006f, -0.000006f, -0.000006f, -0.000006f, -0.000006f, -0.000006f,
-0.000006f, -0.000006f, -0.000006f, -0.000006f, -0.000006f, -0.000006f,
-0.000006f, -0.000006f, -0.000006f, -0.000006f, -0.000006f, -0.000006f,
-0.000006f, -0.000006f, -0.000006f, -0.000006f, -0.000006f, -0.000006f,
-0.000006f, -0.000006f, -0.000005f, -0.000005f, -0.000005f, -0.000005f,
-0.000005f, -0.000005f, -0.000005f, -0.000005f, -0.000005f, -0.000005f,
-0.000005f, -0.000005f, -0.000005f, -0.000005f, -0.000005f, -0.000005f,
-0.000005f, -0.000005f, -0.000005f, -0.000005f, -0.000005f, -0.000005f,
-0.000005f, -0.000005f, -0.000005f, -0.000005f, -0.000005f, -0.000004f,
-0.000004f, -0.000004f, -0.000004f, -0.000004f, -0.000004f, -0.000004f,
-0.000004f, -0.000004f, -0.000004f, -0.000004f, -0.000004f, -0.000004f,
-0.000004f, -0.000004f, -0.000004f, -0.000004f, -0.000004f, -0.000004f,
-0.000004f, -0.000004f, -0.000004f, -0.000004f, -0.000004f, -0.000004f,
-0.000004f, -0.000003f, -0.000003f, -0.000003f, -0.000003f, -0.000003f,
-0.000003f, -0.000003f, -0.000003f, -0.000003f, -0.000003f, -0.000003f,
-0.000003f, -0.000003f, -0.000003f, -0.000003f, -0.000003f, -0.000003f,
-0.000003f, -0.000003f, -0.000003f, -0.000003f, -0.000003f, -0.000003f,
-0.000003f, -0.000003f, -0.000003f, -0.000003f, -0.000003f, -0.000002f,
-0.000002f, -0.000002f, -0.000002f, -0.000002f, -0.000002f, -0.000002f,
-0.000002f, -0.000002f, -0.000002f, -0.000002f, -0.000002f, -0.000002f,
-0.000002f, -0.000002f, -0.000002f, -0.000002f, -0.000002f, -0.000002f,
-0.000002f, -0.000002f, -0.000002f, -0.000002f, -0.000002f, -0.000002f,
-0.000002f, -0.000002f, -0.000002f, -0.000002f, -0.000002f, -0.000002f,
-0.000001f, -0.000001f, -0.000001f, -0.000001f, -0.000001f, -0.000001f,
-0.000001f, -0.000001f, -0.000001f, -0.000001f, -0.000001f, -0.000001f,
-0.000001f, -0.000001f, -0.000001f, -0.000001f, 0.000000f
};
/* vi: set ts=4 sw=4 expandtab: */

105
src/audio/SDL_audiocvt.c
View File

@ -704,97 +704,7 @@ SDL_Convert51To71(SDL_AudioCVT * cvt, SDL_AudioFormat format)
/* SDL's resampler uses a "bandlimited interpolation" algorithm:
https://ccrma.stanford.edu/~jos/resample/ */
#define RESAMPLER_ZERO_CROSSINGS 5
#define RESAMPLER_BITS_PER_SAMPLE 16
#define RESAMPLER_SAMPLES_PER_ZERO_CROSSING (1 << ((RESAMPLER_BITS_PER_SAMPLE / 2) + 1))
#define RESAMPLER_FILTER_SIZE ((RESAMPLER_SAMPLES_PER_ZERO_CROSSING * RESAMPLER_ZERO_CROSSINGS) + 1)
/* This is a "modified" bessel function, so you can't use POSIX j0() */
static double
bessel(const double x)
{
const double xdiv2 = x / 2.0;
double i0 = 1.0f;
double f = 1.0f;
int i = 1;
while (SDL_TRUE) {
const double diff = SDL_pow(xdiv2, i * 2) / SDL_pow(f, 2);
if (diff < 1.0e-21f) {
break;
}
i0 += diff;
i++;
f *= (double) i;
}
return i0;
}
/* build kaiser table with cardinal sine applied to it, and array of differences between elements. */
static void
kaiser_and_sinc(float *table, float *diffs, const int tablelen, const double beta)
{
const int lenm1 = tablelen - 1;
const int lenm1div2 = lenm1 / 2;
int i;
table[0] = 1.0f;
for (i = 1; i < tablelen; i++) {
const double kaiser = bessel(beta * SDL_sqrt(1.0 - SDL_pow(((i - lenm1) / 2.0) / lenm1div2, 2.0))) / bessel(beta);
table[tablelen - i] = (float) kaiser;
}
for (i = 1; i < tablelen; i++) {
const float x = (((float) i) / ((float) RESAMPLER_SAMPLES_PER_ZERO_CROSSING)) * ((float) M_PI);
table[i] *= SDL_sinf(x) / x;
diffs[i - 1] = table[i] - table[i - 1];
}
diffs[lenm1] = 0.0f;
}
static SDL_SpinLock ResampleFilterSpinlock = 0;
static float *ResamplerFilter = NULL;
static float *ResamplerFilterDifference = NULL;
int
SDL_PrepareResampleFilter(void)
{
SDL_AtomicLock(&ResampleFilterSpinlock);
if (!ResamplerFilter) {
/* if dB > 50, beta=(0.1102 * (dB - 8.7)), according to Matlab. */
const double dB = 80.0;
const double beta = 0.1102 * (dB - 8.7);
const size_t alloclen = RESAMPLER_FILTER_SIZE * sizeof (float);
ResamplerFilter = (float *) SDL_malloc(alloclen);
if (!ResamplerFilter) {
SDL_AtomicUnlock(&ResampleFilterSpinlock);
return SDL_OutOfMemory();
}
ResamplerFilterDifference = (float *) SDL_malloc(alloclen);
if (!ResamplerFilterDifference) {
SDL_free(ResamplerFilter);
ResamplerFilter = NULL;
SDL_AtomicUnlock(&ResampleFilterSpinlock);
return SDL_OutOfMemory();
}
kaiser_and_sinc(ResamplerFilter, ResamplerFilterDifference, RESAMPLER_FILTER_SIZE, beta);
}
SDL_AtomicUnlock(&ResampleFilterSpinlock);
return 0;
}
void
SDL_FreeResampleFilter(void)
{
SDL_free(ResamplerFilter);
SDL_free(ResamplerFilterDifference);
ResamplerFilter = NULL;
ResamplerFilterDifference = NULL;
}
#include "SDL_audio_resampler_filter.h"
static int
ResamplerPadding(const int inrate, const int outrate)
@ -803,7 +713,7 @@ ResamplerPadding(const int inrate, const int outrate)
return 0;
}
if (inrate > outrate) {
return (int) SDL_ceil(((float) (RESAMPLER_SAMPLES_PER_ZERO_CROSSING * inrate) / ((float) outrate)));
return (int) SDL_ceilf(((float) (RESAMPLER_SAMPLES_PER_ZERO_CROSSING * inrate) / ((float) outrate)));
}
return RESAMPLER_SAMPLES_PER_ZERO_CROSSING;
}
@ -1119,10 +1029,6 @@ SDL_BuildAudioResampleCVT(SDL_AudioCVT * cvt, const int dst_channels,
return SDL_SetError("No conversion available for these rates");
}
if (SDL_PrepareResampleFilter() < 0) {
return -1;
}
/* Update (cvt) with filter details... */
if (SDL_AddAudioCVTFilter(cvt, filter) < 0) {
return -1;
@ -1743,13 +1649,6 @@ SDL_NewAudioStream(const SDL_AudioFormat src_format,
return NULL;
}
if (SDL_PrepareResampleFilter() < 0) {
SDL_free(retval->resampler_state);
retval->resampler_state = NULL;
SDL_FreeAudioStream(retval);
return NULL;
}
retval->resampler_func = SDL_ResampleAudioStream;
retval->reset_resampler_func = SDL_ResetAudioStreamResampler;
retval->cleanup_resampler_func = SDL_CleanupAudioStreamResampler;