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Use the kissfft gem instead - warvox - VoIP based wardialing tool, forked from …
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---
commit eab48926160862f223dd8727063349e2eec79087
parent d3e37a6ac19cf12e4a91e48885e6b2622c17c64f
Author: HD Moore <[email protected]>
Date: Wed, 10 Oct 2012 01:32:54 -0500
Use the kissfft gem instead
Diffstat:
M Makefile | 12 +-----------
D src/ruby-kissfft/COPYING | 30 ------------------------------
D src/ruby-kissfft/_kiss_fft_guts.h | 150 -----------------------------…
D src/ruby-kissfft/extconf.rb | 5 -----
D src/ruby-kissfft/kiss_fft.c | 427 -----------------------------…
D src/ruby-kissfft/kiss_fft.h | 123 -----------------------------…
D src/ruby-kissfft/kiss_fftr.c | 159 -----------------------------…
D src/ruby-kissfft/kiss_fftr.h | 46 -----------------------------…
D src/ruby-kissfft/main.c | 155 -----------------------------…
D src/ruby-kissfft/sample.data | 0
D src/ruby-kissfft/test_kissfft.rb | 47 -----------------------------…
M web/Gemfile | 1 +
M web/Gemfile.lock | 2 ++
13 files changed, 4 insertions(+), 1153 deletions(-)
---
diff --git a/Makefile b/Makefile
@@ -3,18 +3,11 @@ all: test
test: install
bin/verify_install.rb
-install: bundler dtmf2num ruby-kissfft
+install: bundler dtmf2num
cp -a src/dtmf2num/dtmf2num bin/
-ruby-kissfft-install: ruby-kissfft
- cp -a src/ruby-kissfft/kissfft.so lib/
-
dtmf2num:
make -C src/dtmf2num/
-
-ruby-kissfft:
- ( cd src/ruby-kissfft/; ruby extconf.rb )
- make -C src/ruby-kissfft/ && cp src/ruby-kissfft/kissfft.so lib/
db:
@echo "Checking the database.."
@@ -31,7 +24,4 @@ bundler:
(cd web; bundle install)
clean:
- ( cd src/ruby-kissfft/; ruby extconf.rb )
- make -C src/ruby-kissfft/ clean
make -C src/dtmf2num/ clean
- rm -f lib/kissfft.so
diff --git a/src/ruby-kissfft/COPYING b/src/ruby-kissfft/COPYING
@@ -1,30 +0,0 @@
-Kiss FFT library
-==================
-
-Copyright (c) 2003-2006 Mark Borgerding
-
-All rights reserved.
-
-Redistribution and use in source and binary forms, with or without modificatio…
-
- * Redistributions of source code must retain the above copyright notice, t…
- * Redistributions in binary form must reproduce the above copyright notice…
- * Neither the author nor the names of any contributors may be used to endo…
-
-THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AN…
-
-
-Ruby wrapper layer
-==================
-
-Copyright (C) 2009 H D Moore
-
-All rights reserved.
-
-Redistribution and use in source and binary forms, with or without modificatio…
-
- * Redistributions of source code must retain the above copyright notice, t…
- * Redistributions in binary form must reproduce the above copyright notice…
- * Neither the author nor the names of any contributors may be used to endo…
-
-THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AN…
diff --git a/src/ruby-kissfft/_kiss_fft_guts.h b/src/ruby-kissfft/_kiss_fft_gut…
@@ -1,150 +0,0 @@
-/*
-Copyright (c) 2003-2004, Mark Borgerding
-
-All rights reserved.
-
-Redistribution and use in source and binary forms, with or without modificatio…
-
- * Redistributions of source code must retain the above copyright notice, t…
- * Redistributions in binary form must reproduce the above copyright notice…
- * Neither the author nor the names of any contributors may be used to endo…
-
-THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AN…
-*/
-
-/* kiss_fft.h
- defines kiss_fft_scalar as either short or a float type
- and defines
- typedef struct { kiss_fft_scalar r; kiss_fft_scalar i; }kiss_fft_cpx; */
-#include "kiss_fft.h"
-#include <limits.h>
-
-#define MAXFACTORS 32
-/* e.g. an fft of length 128 has 4 factors
- as far as kissfft is concerned
- 4*4*4*2
- */
-
-struct kiss_fft_state{
- int nfft;
- int inverse;
- int factors[2*MAXFACTORS];
- kiss_fft_cpx twiddles[1];
-};
-
-/*
- Explanation of macros dealing with complex math:
-
- C_MUL(m,a,b) : m = a*b
- C_FIXDIV( c , div ) : if a fixed point impl., c /= div. noop otherwise
- C_SUB( res, a,b) : res = a - b
- C_SUBFROM( res , a) : res -= a
- C_ADDTO( res , a) : res += a
- * */
-#ifdef FIXED_POINT
-#if (FIXED_POINT==32)
-# define FRACBITS 31
-# define SAMPPROD int64_t
-#define SAMP_MAX 2147483647
-#else
-# define FRACBITS 15
-# define SAMPPROD int32_t
-#define SAMP_MAX 32767
-#endif
-
-#define SAMP_MIN -SAMP_MAX
-
-#if defined(CHECK_OVERFLOW)
-# define CHECK_OVERFLOW_OP(a,op,b) \
- if ( (SAMPPROD)(a) op (SAMPPROD)(b) > SAMP_MAX || (SAMPPROD)(a) op (SA…
- fprintf(stderr,"WARNING:overflow @ " __FILE__ "(%d): (%d " #op…
-#endif
-
-
-# define smul(a,b) ( (SAMPPROD)(a)*(b) )
-# define sround( x ) (kiss_fft_scalar)( ( (x) + (1<<(FRACBITS-1)) ) >> FRAC…
-
-# define S_MUL(a,b) sround( smul(a,b) )
-
-# define C_MUL(m,a,b) \
- do{ (m).r = sround( smul((a).r,(b).r) - smul((a).i,(b).i) ); \
- (m).i = sround( smul((a).r,(b).i) + smul((a).i,(b).r) ); }while(0)
-
-# define DIVSCALAR(x,k) \
- (x) = sround( smul( x, SAMP_MAX/k ) )
-
-# define C_FIXDIV(c,div) \
- do { DIVSCALAR( (c).r , div); \
- DIVSCALAR( (c).i , div); }while (0)
-
-# define C_MULBYSCALAR( c, s ) \
- do{ (c).r = sround( smul( (c).r , s ) ) ;\
- (c).i = sround( smul( (c).i , s ) ) ; }while(0)
-
-#else /* not FIXED_POINT*/
-
-# define S_MUL(a,b) ( (a)*(b) )
-#define C_MUL(m,a,b) \
- do{ (m).r = (a).r*(b).r - (a).i*(b).i;\
- (m).i = (a).r*(b).i + (a).i*(b).r; }while(0)
-# define C_FIXDIV(c,div) /* NOOP */
-# define C_MULBYSCALAR( c, s ) \
- do{ (c).r *= (s);\
- (c).i *= (s); }while(0)
-#endif
-
-#ifndef CHECK_OVERFLOW_OP
-# define CHECK_OVERFLOW_OP(a,op,b) /* noop */
-#endif
-
-#define C_ADD( res, a,b)\
- do { \
- CHECK_OVERFLOW_OP((a).r,+,(b).r)\
- CHECK_OVERFLOW_OP((a).i,+,(b).i)\
- (res).r=(a).r+(b).r; (res).i=(a).i+(b).i; \
- }while(0)
-#define C_SUB( res, a,b)\
- do { \
- CHECK_OVERFLOW_OP((a).r,-,(b).r)\
- CHECK_OVERFLOW_OP((a).i,-,(b).i)\
- (res).r=(a).r-(b).r; (res).i=(a).i-(b).i; \
- }while(0)
-#define C_ADDTO( res , a)\
- do { \
- CHECK_OVERFLOW_OP((res).r,+,(a).r)\
- CHECK_OVERFLOW_OP((res).i,+,(a).i)\
- (res).r += (a).r; (res).i += (a).i;\
- }while(0)
-
-#define C_SUBFROM( res , a)\
- do {\
- CHECK_OVERFLOW_OP((res).r,-,(a).r)\
- CHECK_OVERFLOW_OP((res).i,-,(a).i)\
- (res).r -= (a).r; (res).i -= (a).i; \
- }while(0)
-
-
-#ifdef FIXED_POINT
-# define KISS_FFT_COS(phase) floor(.5+SAMP_MAX * cos (phase))
-# define KISS_FFT_SIN(phase) floor(.5+SAMP_MAX * sin (phase))
-# define HALF_OF(x) ((x)>>1)
-#elif defined(USE_SIMD)
-# define KISS_FFT_COS(phase) _mm_set1_ps( cos(phase) )
-# define KISS_FFT_SIN(phase) _mm_set1_ps( sin(phase) )
-# define HALF_OF(x) ((x)*_mm_set1_ps(.5))
-#else
-# define KISS_FFT_COS(phase) (kiss_fft_scalar) cos(phase)
-# define KISS_FFT_SIN(phase) (kiss_fft_scalar) sin(phase)
-# define HALF_OF(x) ((x)*.5)
-#endif
-
-#define kf_cexp(x,phase) \
- do{ \
- (x)->r = KISS_FFT_COS(phase);\
- (x)->i = KISS_FFT_SIN(phase);\
- }while(0)
-
-
-/* a debugging function */
-#define pcpx(c)\
- fprintf(stderr,"%g + %gi\n",(double)((c)->r),(double)((c)->i) )
diff --git a/src/ruby-kissfft/extconf.rb b/src/ruby-kissfft/extconf.rb
@@ -1,5 +0,0 @@
-require 'mkmf'
-
-if(have_library("m"))
- create_makefile("kissfft")
-end
diff --git a/src/ruby-kissfft/kiss_fft.c b/src/ruby-kissfft/kiss_fft.c
@@ -1,427 +0,0 @@
-/*
-Copyright (c) 2003-2004, Mark Borgerding
-
-All rights reserved.
-
-Redistribution and use in source and binary forms, with or without modificatio…
-
- * Redistributions of source code must retain the above copyright notice, t…
- * Redistributions in binary form must reproduce the above copyright notice…
- * Neither the author nor the names of any contributors may be used to endo…
-
-THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AN…
-*/
-
-
-#include "_kiss_fft_guts.h"
-/* The guts header contains all the multiplication and addition macros that ar…
- fixed or floating point complex numbers. It also delares the kf_ internal fu…
- */
-
-static kiss_fft_cpx *scratchbuf=NULL;
-static size_t nscratchbuf=0;
-static kiss_fft_cpx *tmpbuf=NULL;
-static size_t ntmpbuf=0;
-
-#define CHECKBUF(buf,nbuf,n) \
- do { \
- if ( nbuf < (size_t)(n) ) {\
- free(buf); \
- buf = (kiss_fft_cpx*)KISS_FFT_MALLOC(sizeof(kiss_fft_cpx)*(n)); \
- nbuf = (size_t)(n); \
- } \
- }while(0)
-
-
-static void kf_bfly2(
- kiss_fft_cpx * Fout,
- const size_t fstride,
- const kiss_fft_cfg st,
- int m
- )
-{
- kiss_fft_cpx * Fout2;
- kiss_fft_cpx * tw1 = st->twiddles;
- kiss_fft_cpx t;
- Fout2 = Fout + m;
- do{
- C_FIXDIV(*Fout,2); C_FIXDIV(*Fout2,2);
-
- C_MUL (t, *Fout2 , *tw1);
- tw1 += fstride;
- C_SUB( *Fout2 , *Fout , t );
- C_ADDTO( *Fout , t );
- ++Fout2;
- ++Fout;
- }while (--m);
-}
-
-static void kf_bfly4(
- kiss_fft_cpx * Fout,
- const size_t fstride,
- const kiss_fft_cfg st,
- const size_t m
- )
-{
- kiss_fft_cpx *tw1,*tw2,*tw3;
- kiss_fft_cpx scratch[6];
- size_t k=m;
- const size_t m2=2*m;
- const size_t m3=3*m;
-
- tw3 = tw2 = tw1 = st->twiddles;
-
- do {
- C_FIXDIV(*Fout,4); C_FIXDIV(Fout[m],4); C_FIXDIV(Fout[m2],4); C_FIXDIV…
-
- C_MUL(scratch[0],Fout[m] , *tw1 );
- C_MUL(scratch[1],Fout[m2] , *tw2 );
- C_MUL(scratch[2],Fout[m3] , *tw3 );
-
- C_SUB( scratch[5] , *Fout, scratch[1] );
- C_ADDTO(*Fout, scratch[1]);
- C_ADD( scratch[3] , scratch[0] , scratch[2] );
- C_SUB( scratch[4] , scratch[0] , scratch[2] );
- C_SUB( Fout[m2], *Fout, scratch[3] );
- tw1 += fstride;
- tw2 += fstride*2;
- tw3 += fstride*3;
- C_ADDTO( *Fout , scratch[3] );
-
- if(st->inverse) {
- Fout[m].r = scratch[5].r - scratch[4].i;
- Fout[m].i = scratch[5].i + scratch[4].r;
- Fout[m3].r = scratch[5].r + scratch[4].i;
- Fout[m3].i = scratch[5].i - scratch[4].r;
- }else{
- Fout[m].r = scratch[5].r + scratch[4].i;
- Fout[m].i = scratch[5].i - scratch[4].r;
- Fout[m3].r = scratch[5].r - scratch[4].i;
- Fout[m3].i = scratch[5].i + scratch[4].r;
- }
- ++Fout;
- }while(--k);
-}
-
-static void kf_bfly3(
- kiss_fft_cpx * Fout,
- const size_t fstride,
- const kiss_fft_cfg st,
- size_t m
- )
-{
- size_t k=m;
- const size_t m2 = 2*m;
- kiss_fft_cpx *tw1,*tw2;
- kiss_fft_cpx scratch[5];
- kiss_fft_cpx epi3;
- epi3 = st->twiddles[fstride*m];
-
- tw1=tw2=st->twiddles;
-
- do{
- C_FIXDIV(*Fout,3); C_FIXDIV(Fout[m],3); C_FIXDIV(Fout[m2],3);
-
- C_MUL(scratch[1],Fout[m] , *tw1);
- C_MUL(scratch[2],Fout[m2] , *tw2);
-
- C_ADD(scratch[3],scratch[1],scratch[2]);
- C_SUB(scratch[0],scratch[1],scratch[2]);
- tw1 += fstride;
- tw2 += fstride*2;
-
- Fout[m].r = Fout->r - HALF_OF(scratch[3].r);
- Fout[m].i = Fout->i - HALF_OF(scratch[3].i);
-
- C_MULBYSCALAR( scratch[0] , epi3.i );
-
- C_ADDTO(*Fout,scratch[3]);
-
- Fout[m2].r = Fout[m].r + scratch[0].i;
- Fout[m2].i = Fout[m].i - scratch[0].r;
-
- Fout[m].r -= scratch[0].i;
- Fout[m].i += scratch[0].r;
-
- ++Fout;
- }while(--k);
-}
-
-static void kf_bfly5(
- kiss_fft_cpx * Fout,
- const size_t fstride,
- const kiss_fft_cfg st,
- int m
- )
-{
- kiss_fft_cpx *Fout0,*Fout1,*Fout2,*Fout3,*Fout4;
- int u;
- kiss_fft_cpx scratch[13];
- kiss_fft_cpx * twiddles = st->twiddles;
- kiss_fft_cpx *tw;
- kiss_fft_cpx ya,yb;
- ya = twiddles[fstride*m];
- yb = twiddles[fstride*2*m];
-
- Fout0=Fout;
- Fout1=Fout0+m;
- Fout2=Fout0+2*m;
- Fout3=Fout0+3*m;
- Fout4=Fout0+4*m;
-
- tw=st->twiddles;
- for ( u=0; u<m; ++u ) {
- C_FIXDIV( *Fout0,5); C_FIXDIV( *Fout1,5); C_FIXDIV( *Fout2,5); C_FIXDI…
- scratch[0] = *Fout0;
-
- C_MUL(scratch[1] ,*Fout1, tw[u*fstride]);
- C_MUL(scratch[2] ,*Fout2, tw[2*u*fstride]);
- C_MUL(scratch[3] ,*Fout3, tw[3*u*fstride]);
- C_MUL(scratch[4] ,*Fout4, tw[4*u*fstride]);
-
- C_ADD( scratch[7],scratch[1],scratch[4]);
- C_SUB( scratch[10],scratch[1],scratch[4]);
- C_ADD( scratch[8],scratch[2],scratch[3]);
- C_SUB( scratch[9],scratch[2],scratch[3]);
-
- Fout0->r += scratch[7].r + scratch[8].r;
- Fout0->i += scratch[7].i + scratch[8].i;
-
- scratch[5].r = scratch[0].r + S_MUL(scratch[7].r,ya.r) + S_MUL(scratch…
- scratch[5].i = scratch[0].i + S_MUL(scratch[7].i,ya.r) + S_MUL(scratch…
-
- scratch[6].r = S_MUL(scratch[10].i,ya.i) + S_MUL(scratch[9].i,yb.i);
- scratch[6].i = -S_MUL(scratch[10].r,ya.i) - S_MUL(scratch[9].r,yb.i);
-
- C_SUB(*Fout1,scratch[5],scratch[6]);
- C_ADD(*Fout4,scratch[5],scratch[6]);
-
- scratch[11].r = scratch[0].r + S_MUL(scratch[7].r,yb.r) + S_MUL(scratc…
- scratch[11].i = scratch[0].i + S_MUL(scratch[7].i,yb.r) + S_MUL(scratc…
- scratch[12].r = - S_MUL(scratch[10].i,yb.i) + S_MUL(scratch[9].i,ya.i);
- scratch[12].i = S_MUL(scratch[10].r,yb.i) - S_MUL(scratch[9].r,ya.i);
-
- C_ADD(*Fout2,scratch[11],scratch[12]);
- C_SUB(*Fout3,scratch[11],scratch[12]);
-
- ++Fout0;++Fout1;++Fout2;++Fout3;++Fout4;
- }
-}
-
-/* perform the butterfly for one stage of a mixed radix FFT */
-static void kf_bfly_generic(
- kiss_fft_cpx * Fout,
- const size_t fstride,
- const kiss_fft_cfg st,
- int m,
- int p
- )
-{
- int u,k,q1,q;
- kiss_fft_cpx * twiddles = st->twiddles;
- kiss_fft_cpx t;
- int Norig = st->nfft;
-
- CHECKBUF(scratchbuf,nscratchbuf,p);
-
- for ( u=0; u<m; ++u ) {
- k=u;
- for ( q1=0 ; q1<p ; ++q1 ) {
- scratchbuf[q1] = Fout[ k ];
- C_FIXDIV(scratchbuf[q1],p);
- k += m;
- }
-
- k=u;
- for ( q1=0 ; q1<p ; ++q1 ) {
- int twidx=0;
- Fout[ k ] = scratchbuf[0];
- for (q=1;q<p;++q ) {
- twidx += fstride * k;
- if (twidx>=Norig) twidx-=Norig;
- C_MUL(t,scratchbuf[q] , twiddles[twidx] );
- C_ADDTO( Fout[ k ] ,t);
- }
- k += m;
- }
- }
-}
-
-static
-void kf_work(
- kiss_fft_cpx * Fout,
- const kiss_fft_cpx * f,
- const size_t fstride,
- int in_stride,
- int * factors,
- const kiss_fft_cfg st
- )
-{
- kiss_fft_cpx * Fout_beg=Fout;
- const int p=*factors++; /* the radix */
- const int m=*factors++; /* stage's fft length/p */
- const kiss_fft_cpx * Fout_end = Fout + p*m;
-
-#ifdef _OPENMP
- // use openmp extensions at the
- // top-level (not recursive)
- if (fstride==1) {
- int k;
-
- // execute the p different work units in different threads
-# pragma omp parallel for
- for (k=0;k<p;++k)
- kf_work( Fout +k*m, f+ fstride*in_stride*k,fstride*p,in_stride,fac…
- // all threads have joined by this point
-
- switch (p) {
- case 2: kf_bfly2(Fout,fstride,st,m); break;
- case 3: kf_bfly3(Fout,fstride,st,m); break;
- case 4: kf_bfly4(Fout,fstride,st,m); break;
- case 5: kf_bfly5(Fout,fstride,st,m); break;
- default: kf_bfly_generic(Fout,fstride,st,m,p); break;
- }
- return;
- }
-#endif
-
- if (m==1) {
- do{
- *Fout = *f;
- f += fstride*in_stride;
- }while(++Fout != Fout_end );
- }else{
- do{
- // recursive call:
- // DFT of size m*p performed by doing
- // p instances of smaller DFTs of size m,
- // each one takes a decimated version of the input
- kf_work( Fout , f, fstride*p, in_stride, factors,st);
- f += fstride*in_stride;
- }while( (Fout += m) != Fout_end );
- }
-
- Fout=Fout_beg;
-
- // recombine the p smaller DFTs
- switch (p) {
- case 2: kf_bfly2(Fout,fstride,st,m); break;
- case 3: kf_bfly3(Fout,fstride,st,m); break;
- case 4: kf_bfly4(Fout,fstride,st,m); break;
- case 5: kf_bfly5(Fout,fstride,st,m); break;
- default: kf_bfly_generic(Fout,fstride,st,m,p); break;
- }
-}
-
-/* facbuf is populated by p1,m1,p2,m2, ...
- where
- p[i] * m[i] = m[i-1]
- m0 = n */
-static
-void kf_factor(int n,int * facbuf)
-{
- int p=4;
- double floor_sqrt;
- floor_sqrt = floor( sqrt((double)n) );
-
- /*factor out powers of 4, powers of 2, then any remaining primes */
- do {
- while (n % p) {
- switch (p) {
- case 4: p = 2; break;
- case 2: p = 3; break;
- default: p += 2; break;
- }
- if (p > floor_sqrt)
- p = n; /* no more factors, skip to end */
- }
- n /= p;
- *facbuf++ = p;
- *facbuf++ = n;
- } while (n > 1);
-}
-
-/*
- *
- * User-callable function to allocate all necessary storage space for the fft.
- *
- * The return value is a contiguous block of memory, allocated with malloc. A…
- * It can be freed with free(), rather than a kiss_fft-specific function.
- * */
-kiss_fft_cfg kiss_fft_alloc(int nfft,int inverse_fft,void * mem,size_t * lenme…
-{
- kiss_fft_cfg st=NULL;
- size_t memneeded = sizeof(struct kiss_fft_state)
- + sizeof(kiss_fft_cpx)*(nfft-1); /* twiddle factors*/
-
- if ( lenmem==NULL ) {
- st = ( kiss_fft_cfg)KISS_FFT_MALLOC( memneeded );
- }else{
- if (mem != NULL && *lenmem >= memneeded)
- st = (kiss_fft_cfg)mem;
- *lenmem = memneeded;
- }
- if (st) {
- int i;
- st->nfft=nfft;
- st->inverse = inverse_fft;
-
- for (i=0;i<nfft;++i) {
- const double pi=3.141592653589793238462643383279502884197169399375…
- double phase = -2*pi*i / nfft;
- if (st->inverse)
- phase *= -1;
- kf_cexp(st->twiddles+i, phase );
- }
-
- kf_factor(nfft,st->factors);
- }
- return st;
-}
-
-
-
-
-void kiss_fft_stride(kiss_fft_cfg st,const kiss_fft_cpx *fin,kiss_fft_cpx *fou…
-{
- if (fin == fout) {
- CHECKBUF(tmpbuf,ntmpbuf,st->nfft);
- kf_work(tmpbuf,fin,1,in_stride, st->factors,st);
- memcpy(fout,tmpbuf,sizeof(kiss_fft_cpx)*st->nfft);
- }else{
- kf_work( fout, fin, 1,in_stride, st->factors,st );
- }
-}
-
-void kiss_fft(kiss_fft_cfg cfg,const kiss_fft_cpx *fin,kiss_fft_cpx *fout)
-{
- kiss_fft_stride(cfg,fin,fout,1);
-}
-
-
-/* not really necessary to call, but if someone is doing in-place ffts, they m…
- buffers from CHECKBUF
- */
-void kiss_fft_cleanup(void)
-{
- free(scratchbuf);
- scratchbuf = NULL;
- nscratchbuf=0;
- free(tmpbuf);
- tmpbuf=NULL;
- ntmpbuf=0;
-}
-
-int kiss_fft_next_fast_size(int n)
-{
- while(1) {
- int m=n;
- while ( (m%2) == 0 ) m/=2;
- while ( (m%3) == 0 ) m/=3;
- while ( (m%5) == 0 ) m/=5;
- if (m<=1)
- break; /* n is completely factorable by twos, threes, and fives */
- n++;
- }
- return n;
-}
diff --git a/src/ruby-kissfft/kiss_fft.h b/src/ruby-kissfft/kiss_fft.h
@@ -1,123 +0,0 @@
-#ifndef KISS_FFT_H
-#define KISS_FFT_H
-
-#include <stdlib.h>
-#include <stdio.h>
-#include <math.h>
-#include <string.h>
-#include <malloc.h>
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-/*
- ATTENTION!
- If you would like a :
- -- a utility that will handle the caching of fft objects
- -- real-only (no imaginary time component ) FFT
- -- a multi-dimensional FFT
- -- a command-line utility to perform ffts
- -- a command-line utility to perform fast-convolution filtering
-
- Then see kfc.h kiss_fftr.h kiss_fftnd.h fftutil.c kiss_fastfir.c
- in the tools/ directory.
-*/
-
-#ifdef USE_SIMD
-# include <xmmintrin.h>
-# define kiss_fft_scalar __m128
-#define KISS_FFT_MALLOC(nbytes) memalign(16,nbytes)
-#else
-#define KISS_FFT_MALLOC malloc
-#endif
-
-
-#ifdef FIXED_POINT
-#include <sys/types.h>
-# if (FIXED_POINT == 32)
-# define kiss_fft_scalar int32_t
-# else
-# define kiss_fft_scalar int16_t
-# endif
-#else
-# ifndef kiss_fft_scalar
-/* default is float */
-# define kiss_fft_scalar float
-# endif
-#endif
-
-typedef struct {
- kiss_fft_scalar r;
- kiss_fft_scalar i;
-}kiss_fft_cpx;
-
-typedef struct kiss_fft_state* kiss_fft_cfg;
-
-/*
- * kiss_fft_alloc
- *
- * Initialize a FFT (or IFFT) algorithm's cfg/state buffer.
- *
- * typical usage: kiss_fft_cfg mycfg=kiss_fft_alloc(1024,0,NULL,NULL);
- *
- * The return value from fft_alloc is a cfg buffer used internally
- * by the fft routine or NULL.
- *
- * If lenmem is NULL, then kiss_fft_alloc will allocate a cfg buffer using ma…
- * The returned value should be free()d when done to avoid memory leaks.
- *
- * The state can be placed in a user supplied buffer 'mem':
- * If lenmem is not NULL and mem is not NULL and *lenmem is large enough,
- * then the function places the cfg in mem and the size used in *lenmem
- * and returns mem.
- *
- * If lenmem is not NULL and ( mem is NULL or *lenmem is not large enough),
- * then the function returns NULL and places the minimum cfg
- * buffer size in *lenmem.
- * */
-
-kiss_fft_cfg kiss_fft_alloc(int nfft,int inverse_fft,void * mem,size_t * lenme…
-
-/*
- * kiss_fft(cfg,in_out_buf)
- *
- * Perform an FFT on a complex input buffer.
- * for a forward FFT,
- * fin should be f[0] , f[1] , ... ,f[nfft-1]
- * fout will be F[0] , F[1] , ... ,F[nfft-1]
- * Note that each element is complex and can be accessed like
- f[k].r and f[k].i
- * */
-void kiss_fft(kiss_fft_cfg cfg,const kiss_fft_cpx *fin,kiss_fft_cpx *fout);
-
-/*
- A more generic version of the above function. It reads its input from every N…
- * */
-void kiss_fft_stride(kiss_fft_cfg cfg,const kiss_fft_cpx *fin,kiss_fft_cpx *fo…
-
-/* If kiss_fft_alloc allocated a buffer, it is one contiguous
- buffer and can be simply free()d when no longer needed*/
-#define kiss_fft_free free
-
-/*
- Cleans up some memory that gets managed internally. Not necessary to call, bu…
- your compiler output to call this before you exit.
-*/
-void kiss_fft_cleanup(void);
-
-
-/*
- * Returns the smallest integer k, such that k>=n and k has only "fast" factor…
- */
-int kiss_fft_next_fast_size(int n);
-
-/* for real ffts, we need an even size */
-#define kiss_fftr_next_fast_size_real(n) \
- (kiss_fft_next_fast_size( ((n)+1)>>1)<<1)
-
-#ifdef __cplusplus
-}
-#endif
-
-#endif
diff --git a/src/ruby-kissfft/kiss_fftr.c b/src/ruby-kissfft/kiss_fftr.c
@@ -1,159 +0,0 @@
-/*
-Copyright (c) 2003-2004, Mark Borgerding
-
-All rights reserved.
-
-Redistribution and use in source and binary forms, with or without modificatio…
-
- * Redistributions of source code must retain the above copyright notice, t…
- * Redistributions in binary form must reproduce the above copyright notice…
- * Neither the author nor the names of any contributors may be used to endo…
-
-THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AN…
-*/
-
-#include "kiss_fftr.h"
-#include "_kiss_fft_guts.h"
-
-struct kiss_fftr_state{
- kiss_fft_cfg substate;
- kiss_fft_cpx * tmpbuf;
- kiss_fft_cpx * super_twiddles;
-#ifdef USE_SIMD
- long pad;
-#endif
-};
-
-kiss_fftr_cfg kiss_fftr_alloc(int nfft,int inverse_fft,void * mem,size_t * len…
-{
- int i;
- kiss_fftr_cfg st = NULL;
- size_t subsize, memneeded;
-
- if (nfft & 1) {
- fprintf(stderr,"Real FFT optimization must be even.\n");
- return NULL;
- }
- nfft >>= 1;
-
- kiss_fft_alloc (nfft, inverse_fft, NULL, &subsize);
- memneeded = sizeof(struct kiss_fftr_state) + subsize + sizeof(kiss_fft_cpx…
-
- if (lenmem == NULL) {
- st = (kiss_fftr_cfg) KISS_FFT_MALLOC (memneeded);
- } else {
- if (*lenmem >= memneeded)
- st = (kiss_fftr_cfg) mem;
- *lenmem = memneeded;
- }
- if (!st)
- return NULL;
-
- st->substate = (kiss_fft_cfg) (st + 1); /*just beyond kiss_fftr_state stru…
- st->tmpbuf = (kiss_fft_cpx *) (((char *) st->substate) + subsize);
- st->super_twiddles = st->tmpbuf + nfft;
- kiss_fft_alloc(nfft, inverse_fft, st->substate, &subsize);
-
- for (i = 0; i < nfft/2; ++i) {
- double phase =
- -3.14159265358979323846264338327 * ((double) (i+1) / nfft + .5);
- if (inverse_fft)
- phase *= -1;
- kf_cexp (st->super_twiddles+i,phase);
- }
- return st;
-}
-
-void kiss_fftr(kiss_fftr_cfg st,const kiss_fft_scalar *timedata,kiss_fft_cpx *…
-{
- /* input buffer timedata is stored row-wise */
- int k,ncfft;
- kiss_fft_cpx fpnk,fpk,f1k,f2k,tw,tdc;
-
- if ( st->substate->inverse) {
- fprintf(stderr,"kiss fft usage error: improper alloc\n");
- exit(1);
- }
-
- ncfft = st->substate->nfft;
-
- /*perform the parallel fft of two real signals packed in real,imag*/
- kiss_fft( st->substate , (const kiss_fft_cpx*)timedata, st->tmpbuf );
- /* The real part of the DC element of the frequency spectrum in st->tmpbuf
- * contains the sum of the even-numbered elements of the input time sequen…
- * The imag part is the sum of the odd-numbered elements
- *
- * The sum of tdc.r and tdc.i is the sum of the input time sequence.
- * yielding DC of input time sequence
- * The difference of tdc.r - tdc.i is the sum of the input (dot product) […
- * yielding Nyquist bin of input time sequence
- */
-
- tdc.r = st->tmpbuf[0].r;
- tdc.i = st->tmpbuf[0].i;
- C_FIXDIV(tdc,2);
- CHECK_OVERFLOW_OP(tdc.r ,+, tdc.i);
- CHECK_OVERFLOW_OP(tdc.r ,-, tdc.i);
- freqdata[0].r = tdc.r + tdc.i;
- freqdata[ncfft].r = tdc.r - tdc.i;
-#ifdef USE_SIMD
- freqdata[ncfft].i = freqdata[0].i = _mm_set1_ps(0);
-#else
- freqdata[ncfft].i = freqdata[0].i = 0;
-#endif
-
- for ( k=1;k <= ncfft/2 ; ++k ) {
- fpk = st->tmpbuf[k];
- fpnk.r = st->tmpbuf[ncfft-k].r;
- fpnk.i = - st->tmpbuf[ncfft-k].i;
- C_FIXDIV(fpk,2);
- C_FIXDIV(fpnk,2);
-
- C_ADD( f1k, fpk , fpnk );
- C_SUB( f2k, fpk , fpnk );
- C_MUL( tw , f2k , st->super_twiddles[k-1]);
-
- freqdata[k].r = HALF_OF(f1k.r + tw.r);
- freqdata[k].i = HALF_OF(f1k.i + tw.i);
- freqdata[ncfft-k].r = HALF_OF(f1k.r - tw.r);
- freqdata[ncfft-k].i = HALF_OF(tw.i - f1k.i);
- }
-}
-
-void kiss_fftri(kiss_fftr_cfg st,const kiss_fft_cpx *freqdata,kiss_fft_scalar …
-{
- /* input buffer timedata is stored row-wise */
- int k, ncfft;
-
- if (st->substate->inverse == 0) {
- fprintf (stderr, "kiss fft usage error: improper alloc\n");
- exit (1);
- }
-
- ncfft = st->substate->nfft;
-
- st->tmpbuf[0].r = freqdata[0].r + freqdata[ncfft].r;
- st->tmpbuf[0].i = freqdata[0].r - freqdata[ncfft].r;
- C_FIXDIV(st->tmpbuf[0],2);
-
- for (k = 1; k <= ncfft / 2; ++k) {
- kiss_fft_cpx fk, fnkc, fek, fok, tmp;
- fk = freqdata[k];
- fnkc.r = freqdata[ncfft - k].r;
- fnkc.i = -freqdata[ncfft - k].i;
- C_FIXDIV( fk , 2 );
- C_FIXDIV( fnkc , 2 );
-
- C_ADD (fek, fk, fnkc);
- C_SUB (tmp, fk, fnkc);
- C_MUL (fok, tmp, st->super_twiddles[k-1]);
- C_ADD (st->tmpbuf[k], fek, fok);
- C_SUB (st->tmpbuf[ncfft - k], fek, fok);
-#ifdef USE_SIMD
- st->tmpbuf[ncfft - k].i *= _mm_set1_ps(-1.0);
-#else
- st->tmpbuf[ncfft - k].i *= -1;
-#endif
- }
- kiss_fft (st->substate, st->tmpbuf, (kiss_fft_cpx *) timedata);
-}
diff --git a/src/ruby-kissfft/kiss_fftr.h b/src/ruby-kissfft/kiss_fftr.h
@@ -1,46 +0,0 @@
-#ifndef KISS_FTR_H
-#define KISS_FTR_H
-
-#include "kiss_fft.h"
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-
-/*
-
- Real optimized version can save about 45% cpu time vs. complex fft of a real …
-
-
-
- */
-
-typedef struct kiss_fftr_state *kiss_fftr_cfg;
-
-
-kiss_fftr_cfg kiss_fftr_alloc(int nfft,int inverse_fft,void * mem, size_t * le…
-/*
- nfft must be even
-
- If you don't care to allocate space, use mem = lenmem = NULL
-*/
-
-
-void kiss_fftr(kiss_fftr_cfg cfg,const kiss_fft_scalar *timedata,kiss_fft_cpx …
-/*
- input timedata has nfft scalar points
- output freqdata has nfft/2+1 complex points
-*/
-
-void kiss_fftri(kiss_fftr_cfg cfg,const kiss_fft_cpx *freqdata,kiss_fft_scalar…
-/*
- input freqdata has nfft/2+1 complex points
- output timedata has nfft scalar points
-*/
-
-#define kiss_fftr_free free
-
-#ifdef __cplusplus
-}
-#endif
-#endif
diff --git a/src/ruby-kissfft/main.c b/src/ruby-kissfft/main.c
@@ -1,155 +0,0 @@
-/*
- ruby-kissfft: a simple ruby module embedding the Kiss FFT library
- Copyright (C) 2009-2010 Rapid7 LLC - H D Moore <hdm[at]metasploit.com>
-
- Derived from "psdpng.c" from the KissFFT tools directory
- Copyright (C) 2003-2006 Mark Borgerding
-*/
-
-#include "ruby.h"
-
-
-#include <stdlib.h>
-#include <math.h>
-#include <stdio.h>
-#include <string.h>
-#include <unistd.h>
-
-#include "kiss_fft.h"
-#include "kiss_fftr.h"
-
-static VALUE rb_cKissFFT;
-
-#define KISS_VERSION "1.2.8-1.0"
-
-
-static VALUE
-rbkiss_s_version(VALUE class)
-{
- return rb_str_new2(KISS_VERSION);
-}
-
-#define CHECKNULL(p) if ( (p)==NULL ) do { fprintf(stderr,"CHECKNULL failed @ …
-
-static VALUE
-rbkiss_s_fftr(VALUE class, VALUE r_nfft, VALUE r_rate, VALUE r_buckets, VALUE …
-{
- kiss_fftr_cfg cfg=NULL;
- kiss_fft_scalar *tbuf;
- kiss_fft_cpx *fbuf;
- float *mag2buf;
- int i;
- int avgctr=0;
- int nrows=0;
-
- int nfft;
- int rate;
- int navg;
- int nfreqs;
-
- int inp_len;
- int inp_idx;
-
- // Result set
- VALUE res;
- VALUE tmp;
- VALUE set;
- res = rb_ary_new();
-
- if(TYPE(r_nfft) != T_FIXNUM) {
- return Qnil;
- }
- nfft=NUM2INT(r_nfft);
-
- if(TYPE(r_rate) != T_FIXNUM) {
- return Qnil;
- }
- rate=NUM2INT(r_rate);
-
- if(TYPE(r_buckets) != T_FIXNUM) {
- return Qnil;
- }
- navg=NUM2INT(r_buckets);
-
- if(TYPE(r_data) != T_ARRAY) {
- return Qnil;
- }
-
- if(RARRAY_LEN(r_data) == 0) {
- return Qnil;
- }
-
- if(TYPE(RARRAY_PTR(r_data)[0]) != T_FIXNUM ) {
- return Qnil;
- }
-
- nfreqs=nfft/2+1;
-
- CHECKNULL( cfg=kiss_fftr_alloc(nfft,0,0,0) );
- CHECKNULL( tbuf=(kiss_fft_scalar*)malloc(sizeof(kiss_fft_scalar)*(nfft…
- CHECKNULL( fbuf=(kiss_fft_cpx*)malloc(sizeof(kiss_fft_cpx)*(nfft + 2))…
- CHECKNULL( mag2buf=(float*)malloc(sizeof(float)*(nfft + 2) ));
-
- memset(mag2buf,0,sizeof(mag2buf)*nfreqs);
-
- inp_len = RARRAY_LEN(r_data);
- inp_idx = 0;
-
- while(inp_idx < inp_len) {
-
- // Fill tbuf with nfft samples
- for(i=0;i<nfft;i++) {
- if(inp_idx + i >= inp_len) {
- tbuf[i] = 0;
- } else {
- if(TYPE(RARRAY_PTR(r_data)[ inp_idx + i ]) != …
- tbuf[i] = 0;
- } else {
- tbuf[i] = NUM2INT( RARRAY_PTR(r_data)[…
- }
- }
- }
-
-
- /* do FFT */
- kiss_fftr(cfg,tbuf,fbuf);
-
- for (i=0;i<nfreqs;++i) {
- mag2buf[i] += fbuf[i].r * fbuf[i].r + fbuf[i].i * fbuf…
- }
-
- if (++avgctr == navg) {
- float eps = 1;
- avgctr=0;
- ++nrows;
-
- // RESULTS
- set = rb_ary_new();
- for (i=0;i<nfreqs;++i) {
- float pwr = 10 * log10( mag2buf[i] / navg + ep…
- tmp = rb_ary_new();
- rb_ary_push(tmp, rb_float_new( (float)i * ( ( …
- rb_ary_push(tmp, rb_float_new( pwr));
- rb_ary_push(set, tmp);
- }
- rb_ary_push(res, set);
- memset(mag2buf,0,sizeof(mag2buf[0])*nfreqs);
- }
- inp_idx += nfft;
- }
-
- free(cfg);
- free(tbuf);
- free(fbuf);
- free(mag2buf);
- return(res);
-}
-
-void
-Init_kissfft()
-{
- // KissFFT
- rb_cKissFFT = rb_define_class("KissFFT", rb_cObject);
- rb_define_module_function(rb_cKissFFT, "version", rbkiss_s_version, 0);
- rb_define_module_function(rb_cKissFFT, "fftr", rbkiss_s_fftr, 4);
-}
diff --git a/src/ruby-kissfft/sample.data b/src/ruby-kissfft/sample.data
Binary files differ.
diff --git a/src/ruby-kissfft/test_kissfft.rb b/src/ruby-kissfft/test_kissfft.rb
@@ -1,47 +0,0 @@
-#!/usr/bin/ruby
-
-base = File.symlink?(__FILE__) ? File.readlink(__FILE__) : __FILE__
-$:.unshift(File.join(File.dirname(base)))
-
-require 'test/unit'
-require 'kissfft'
-require 'pp'
-
-#
-# Simple unit test
-#
-
-class KissFFT::UnitTest < Test::Unit::TestCase
- def test_version
- assert_equal(String, KissFFT.version.class)
- puts "KissFFT version: #{KissFFT.version}"
- end
- def test_fftr
- data = File.read('sample.data').unpack('s*')
-
- min = 1
- res = KissFFT.fftr(8192, 8000, 1, data)
-
- tones = {}
- res.each do |x|
- rank = x.sort{|a,b| a[1].to_i <=> b[1].to_i }.reverse
- rank[0..10].each do |t|
- f = t[0].round
- p = t[1].round
- next if f == 0
- next if p < min
- tones[ f ] ||= []
- tones[ f ] << t
- end
- end
-
- tones.keys.sort.each do |t|
- next if tones[t].length < 2
- puts "#{t}hz"
- tones[t].each do |x|
- puts "\t#{x[0]}hz @ #{x[1]}"
- end
- end
-
- end
-end
diff --git a/web/Gemfile b/web/Gemfile
@@ -2,6 +2,7 @@ source 'http://rubygems.org'
gem 'rails', '3.2.8'
gem 'pg', '0.11'
+gem 'kissfft'
# Gems used only for assets and not required
# in production environments by default.
diff --git a/web/Gemfile.lock b/web/Gemfile.lock
@@ -48,6 +48,7 @@ GEM
railties (>= 3.1.0, < 5.0)
thor (~> 0.14)
json (1.7.5)
+ kissfft (0.0.1)
libv8 (3.3.10.4)
mail (2.4.4)
i18n (>= 0.4.0)
@@ -111,6 +112,7 @@ DEPENDENCIES
coffee-rails (~> 3.2.1)
dynamic_form
jquery-rails
+ kissfft
pg (= 0.11)
rails (= 3.2.8)
sass-rails (~> 3.2.3)
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