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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-19 01:13:27 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-19 01:13:27 +0000 |
commit | 40a355a42d4a9444dc753c04c6608dade2f06a23 (patch) | |
tree | 871fc667d2de662f171103ce5ec067014ef85e61 /media/kiss_fft/kiss_fft.h | |
parent | Adding upstream version 124.0.1. (diff) | |
download | firefox-upstream/125.0.1.tar.xz firefox-upstream/125.0.1.zip |
Adding upstream version 125.0.1.upstream/125.0.1
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'media/kiss_fft/kiss_fft.h')
-rw-r--r-- | media/kiss_fft/kiss_fft.h | 124 |
1 files changed, 0 insertions, 124 deletions
diff --git a/media/kiss_fft/kiss_fft.h b/media/kiss_fft/kiss_fft.h deleted file mode 100644 index 64c50f4aae..0000000000 --- a/media/kiss_fft/kiss_fft.h +++ /dev/null @@ -1,124 +0,0 @@ -#ifndef KISS_FFT_H -#define KISS_FFT_H - -#include <stdlib.h> -#include <stdio.h> -#include <math.h> -#include <string.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) _mm_malloc(nbytes,16) -#define KISS_FFT_FREE _mm_free -#else -#define KISS_FFT_MALLOC malloc -#define KISS_FFT_FREE free -#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 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_cfg kiss_fft_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(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 Nth sample. - * */ -void kiss_fft_stride(kiss_fft_cfg cfg,const kiss_fft_cpx *fin,kiss_fft_cpx *fout,int fin_stride); - -/* 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, but it might clean up - 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" factors (2,3,5) - */ -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 |