shithub: aacenc

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Added fixed fftw-stuff. Use rdft_spectrum2.c instead of rdft_spectrum.c
and set -DUSE_FFTW in Makefile to enable it..
Be sure that you have libfftw installed
fftw_init() and fftw_destroy() have to be placed elsewhere
(should only be run once in the program -> speed)

--- a/rdft.h

+++ b/rdft.h

@@ -1,6 +1,8 @@

-//#include "rfftw.h"

-//rfftw_plan rdft_plan11;

-//rfftw_plan rdft_plan8;

+#ifdef USE_FFTW

+#include <rfftw.h>

+rfftw_plan rdft_plan11;

+rfftw_plan rdft_plan8;

+#endif

 void fftw_init();

 void fftw_destroy();

--- a/rdft_spectrum2.c

+++ b/rdft_spectrum2.c

@@ -39,6 +39,8 @@

 void rdft( double *fr, unsigned lg2n ) 

 /* real discrete Fourier transform; not recursive */

 {

+fftw_init();

+/*FIXME: has to be placed elsewhere*/

 rfftw_plan rdft_plan;

 double fo[lg2n];

 switch(lg2n) {

@@ -53,6 +55,8 @@

 	printf("ERROR: rdft with size %i",lg2n);

 }

 	memcpy(fr,fo,sizeof(fr));

+fftw_destroy();

+/*FIXME: has to be placed elsewhere*/

 }

 void spectrum( double *f, unsigned lg2n )