diff options
Diffstat (limited to 'gst-libs/gst/fft/kiss_fft_f32.h')
-rw-r--r-- | gst-libs/gst/fft/kiss_fft_f32.h | 99 |
1 files changed, 0 insertions, 99 deletions
diff --git a/gst-libs/gst/fft/kiss_fft_f32.h b/gst-libs/gst/fft/kiss_fft_f32.h deleted file mode 100644 index 06a893d2..00000000 --- a/gst-libs/gst/fft/kiss_fft_f32.h +++ /dev/null @@ -1,99 +0,0 @@ -#ifndef KISS_FFT_F32_H -#define KISS_FFT_F32_H - -#include <stdlib.h> -#include <stdio.h> -#include <math.h> -#include <memory.h> -#include <glib.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. -*/ - -#define KISS_FFT_F32_MALLOC g_malloc -#define kiss_fft_f32_scalar float - -typedef struct { - kiss_fft_f32_scalar r; - kiss_fft_f32_scalar i; -}kiss_fft_f32_cpx; - -typedef struct kiss_fft_f32_state* kiss_fft_f32_cfg; - -/* - * kiss_fft_f32_alloc - * - * Initialize a FFT (or IFFT) algorithm's cfg/state buffer. - * - * typical usage: kiss_fft_f32_cfg mycfg=kiss_fft_f32_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_f32_alloc will allocate a cfg buffer using malloc. - * 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_f32_cfg kiss_fft_f32_alloc(int nfft,int inverse_fft,void * mem,size_t * lenmem); - -/* - * 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_f32(kiss_fft_f32_cfg cfg,const kiss_fft_f32_cpx *fin,kiss_fft_f32_cpx *fout); - -/* - A more generic version of the above function. It reads its input from every Nth sample. - * */ -void kiss_fft_f32_stride(kiss_fft_f32_cfg cfg,const kiss_fft_f32_cpx *fin,kiss_fft_f32_cpx *fout,int fin_stride); - -/* If kiss_fft_f32_alloc allocated a buffer, it is one contiguous - buffer and can be simply free()d when no longer needed*/ -#define kiss_fft_f32_free g_free - -/* - Cleans up some memory that gets managed internally. Not necessary to call, but it might clean up - your compiler output to call this before you exit. -*/ -void kiss_fft_f32_cleanup(void); - - -/* - * Returns the smallest integer k, such that k>=n and k has only "fast" factors (2,3,5) - */ -int kiss_fft_f32_next_fast_size(int n); - -#ifdef __cplusplus -} -#endif - -#endif |