- * THIS FILE IS PART OF THE Ogg Vorbis SOFTWARE CODEC SOURCE CODE. *
- * USE, DISTRIBUTION AND REPRODUCTION OF THIS SOURCE IS GOVERNED BY *
- * THE GNU PUBLIC LICENSE 2, WHICH IS INCLUDED WITH THIS SOURCE. *
- * PLEASE READ THESE TERMS DISTRIBUTING. *
+ * THIS FILE IS PART OF THE OggVorbis SOFTWARE CODEC SOURCE CODE. *
+ * USE, DISTRIBUTION AND REPRODUCTION OF THIS LIBRARY SOURCE IS *
+ * GOVERNED BY A BSD-STYLE SOURCE LICENSE INCLUDED WITH THIS SOURCE *
+ * IN 'COPYING'. PLEASE READ THESE TERMS BEFORE DISTRIBUTING. *
- * THE OggSQUISH SOURCE CODE IS (C) COPYRIGHT 1994-2000 *
- * by Monty <monty@xiph.org> and The XIPHOPHORUS Company *
- * http://www.xiph.org/ *
+ * THE OggVorbis SOURCE CODE IS (C) COPYRIGHT 1994-2009 *
+ * by the Xiph.Org Foundation http://www.xiph.org/ *
* *
********************************************************************
function: *unnormalized* fft transform
* *
********************************************************************
function: *unnormalized* fft transform
/* FFT implementation from OggSquish, minus cosine transforms,
* minus all but radix 2/4 case. In Vorbis we only need this
/* FFT implementation from OggSquish, minus cosine transforms,
* minus all but radix 2/4 case. In Vorbis we only need this
static int ntryh[4] = { 4,2,3,5 };
static int ntryh[4] = { 4,2,3,5 };
- static double tpi = 6.28318530717958647692528676655900577;
- double arg,argh,argld,fi;
+ static float tpi = 6.28318530717958648f;
+ float arg,argh,argld,fi;
int ntry=0,i,j=-1;
int k1, l1, l2, ib;
int ld, ii, ip, is, nq, nr;
int ntry=0,i,j=-1;
int k1, l1, l2, ib;
int ld, ii, ip, is, nq, nr;
-static void dradf2(int ido,int l1,double *cc,double *ch,double *wa1){
+static void dradf2(int ido,int l1,float *cc,float *ch,float *wa1){
int t0,t1,t2,t3,t4,t5,t6;
t1=0;
int t0,t1,t2,t3,t4,t5,t6;
t1=0;
-static void dradf4(int ido,int l1,double *cc,double *ch,double *wa1,
- double *wa2,double *wa3){
- static double hsqt2 = .70710678118654752440084436210485;
+static void dradf4(int ido,int l1,float *cc,float *ch,float *wa1,
+ float *wa2,float *wa3){
+ static float hsqt2 = .70710678118654752f;
int i,k,t0,t1,t2,t3,t4,t5,t6;
int i,k,t0,t1,t2,t3,t4,t5,t6;
- double ci2,ci3,ci4,cr2,cr3,cr4,ti1,ti2,ti3,ti4,tr1,tr2,tr3,tr4;
+ float ci2,ci3,ci4,cr2,cr3,cr4,ti1,ti2,ti3,ti4,tr1,tr2,tr3,tr4;
-static void dradfg(int ido,int ip,int l1,int idl1,double *cc,double *c1,
- double *c2,double *ch,double *ch2,double *wa){
+static void dradfg(int ido,int ip,int l1,int idl1,float *cc,float *c1,
+ float *c2,float *ch,float *ch2,float *wa){
int idij,ipph,i,j,k,l,ic,ik,is;
int t0,t1,t2,t3,t4,t5,t6,t7,t8,t9,t10;
int idij,ipph,i,j,k,l,ic,ik,is;
int t0,t1,t2,t3,t4,t5,t6,t7,t8,t9,t10;
- double dc2,ai1,ai2,ar1,ar2,ds2;
+ float dc2,ai1,ai2,ar1,ar2,ds2;
- double dcp,arg,dsp,ar1h,ar2h;
+ float dcp,arg,dsp,ar1h,ar2h;
-static void drftf1(int n,double *c,double *ch,double *wa,int *ifac){
+static void drftf1(int n,float *c,float *ch,float *wa,int *ifac){
int i,k1,l1,l2;
int na,kh,nf;
int ip,iw,ido,idl1,ix2,ix3;
int i,k1,l1,l2;
int na,kh,nf;
int ip,iw,ido,idl1,ix2,ix3;
-static void dradb2(int ido,int l1,double *cc,double *ch,double *wa1){
+static void dradb2(int ido,int l1,float *cc,float *ch,float *wa1){
int i,k,t0,t1,t2,t3,t4,t5,t6;
int i,k,t0,t1,t2,t3,t4,t5,t6;
-static void dradb3(int ido,int l1,double *cc,double *ch,double *wa1,
- double *wa2){
- static double taur = -.5;
- static double taui = .86602540378443864676372317075293618;
+static void dradb3(int ido,int l1,float *cc,float *ch,float *wa1,
+ float *wa2){
+ static float taur = -.5f;
+ static float taui = .8660254037844386f;
int i,k,t0,t1,t2,t3,t4,t5,t6,t7,t8,t9,t10;
int i,k,t0,t1,t2,t3,t4,t5,t6,t7,t8,t9,t10;
- double ci2,ci3,di2,di3,cr2,cr3,dr2,dr3,ti2,tr2;
+ float ci2,ci3,di2,di3,cr2,cr3,dr2,dr3,ti2,tr2;
-static void dradb4(int ido,int l1,double *cc,double *ch,double *wa1,
- double *wa2,double *wa3){
- static double sqrt2=1.4142135623730950488016887242097;
+static void dradb4(int ido,int l1,float *cc,float *ch,float *wa1,
+ float *wa2,float *wa3){
+ static float sqrt2=1.414213562373095f;
int i,k,t0,t1,t2,t3,t4,t5,t6,t7,t8;
int i,k,t0,t1,t2,t3,t4,t5,t6,t7,t8;
- double ci2,ci3,ci4,cr2,cr3,cr4,ti1,ti2,ti3,ti4,tr1,tr2,tr3,tr4;
+ float ci2,ci3,ci4,cr2,cr3,cr4,ti1,ti2,ti3,ti4,tr1,tr2,tr3,tr4;
-static void dradbg(int ido,int ip,int l1,int idl1,double *cc,double *c1,
- double *c2,double *ch,double *ch2,double *wa){
- static double tpi=6.28318530717958647692528676655900577;
+static void dradbg(int ido,int ip,int l1,int idl1,float *cc,float *c1,
+ float *c2,float *ch,float *ch2,float *wa){
+ static float tpi=6.283185307179586f;
int idij,ipph,i,j,k,l,ik,is,t0,t1,t2,t3,t4,t5,t6,t7,t8,t9,t10,
t11,t12;
int idij,ipph,i,j,k,l,ik,is,t0,t1,t2,t3,t4,t5,t6,t7,t8,t9,t10,
t11,t12;
- double dc2,ai1,ai2,ar1,ar2,ds2;
+ float dc2,ai1,ai2,ar1,ar2,ds2;
- double dcp,arg,dsp,ar1h,ar2h;
+ float dcp,arg,dsp,ar1h,ar2h;
-static void drftb1(int n, double *c, double *ch, double *wa, int *ifac){
+static void drftb1(int n, float *c, float *ch, float *wa, int *ifac){
int i,k1,l1,l2;
int na;
int nf,ip,iw,ix2,ix3,ido,idl1;
int i,k1,l1,l2;
int na;
int nf,ip,iw,ix2,ix3,ido,idl1;
if(l->n==1)return;
drftf1(l->n,data,l->trigcache,l->trigcache+l->n,l->splitcache);
}
if(l->n==1)return;
drftf1(l->n,data,l->trigcache,l->trigcache+l->n,l->splitcache);
}
if (l->n==1)return;
drftb1(l->n,data,l->trigcache,l->trigcache+l->n,l->splitcache);
}
void drft_init(drft_lookup *l,int n){
l->n=n;
if (l->n==1)return;
drftb1(l->n,data,l->trigcache,l->trigcache+l->n,l->splitcache);
}
void drft_init(drft_lookup *l,int n){
l->n=n;
- l->trigcache=calloc(3*n,sizeof(double));
- l->splitcache=calloc(32,sizeof(int));
+ l->trigcache=_ogg_calloc(3*n,sizeof(*l->trigcache));
+ l->splitcache=_ogg_calloc(32,sizeof(*l->splitcache));
fdrffti(n, l->trigcache, l->splitcache);
}
void drft_clear(drft_lookup *l){
if(l){
fdrffti(n, l->trigcache, l->splitcache);
}
void drft_clear(drft_lookup *l){
if(l){
- if(l->trigcache)free(l->trigcache);
- if(l->splitcache)free(l->splitcache);
- memset(l,0,sizeof(drft_lookup));
+ if(l->trigcache)_ogg_free(l->trigcache);
+ if(l->splitcache)_ogg_free(l->splitcache);
+ memset(l,0,sizeof(*l));