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Diffstat (limited to 'src/main/jni/opus/celt/kiss_fft.h')
-rw-r--r-- | src/main/jni/opus/celt/kiss_fft.h | 139 |
1 files changed, 0 insertions, 139 deletions
diff --git a/src/main/jni/opus/celt/kiss_fft.h b/src/main/jni/opus/celt/kiss_fft.h deleted file mode 100644 index 66332e3bb..000000000 --- a/src/main/jni/opus/celt/kiss_fft.h +++ /dev/null @@ -1,139 +0,0 @@ -/*Copyright (c) 2003-2004, Mark Borgerding - Lots of modifications by Jean-Marc Valin - Copyright (c) 2005-2007, Xiph.Org Foundation - Copyright (c) 2008, Xiph.Org Foundation, CSIRO - - All rights reserved. - - Redistribution and use in source and binary forms, with or without - modification, are permitted provided that the following conditions are met: - - * Redistributions of source code must retain the above copyright notice, - this list of conditions and the following disclaimer. - * Redistributions in binary form must reproduce the above copyright notice, - this list of conditions and the following disclaimer in the - documentation and/or other materials provided with the distribution. - - THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" - AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE - LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR - CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF - SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS - INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN - CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) - ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE - POSSIBILITY OF SUCH DAMAGE.*/ - -#ifndef KISS_FFT_H -#define KISS_FFT_H - -#include <stdlib.h> -#include <math.h> -#include "arch.h" - -#ifdef __cplusplus -extern "C" { -#endif - -#ifdef USE_SIMD -# include <xmmintrin.h> -# define kiss_fft_scalar __m128 -#define KISS_FFT_MALLOC(nbytes) memalign(16,nbytes) -#else -#define KISS_FFT_MALLOC opus_alloc -#endif - -#ifdef FIXED_POINT -#include "arch.h" - -# define kiss_fft_scalar opus_int32 -# define kiss_twiddle_scalar opus_int16 - - -#else -# ifndef kiss_fft_scalar -/* default is float */ -# define kiss_fft_scalar float -# define kiss_twiddle_scalar float -# define KF_SUFFIX _celt_single -# endif -#endif - -typedef struct { - kiss_fft_scalar r; - kiss_fft_scalar i; -}kiss_fft_cpx; - -typedef struct { - kiss_twiddle_scalar r; - kiss_twiddle_scalar i; -}kiss_twiddle_cpx; - -#define MAXFACTORS 8 -/* e.g. an fft of length 128 has 4 factors - as far as kissfft is concerned - 4*4*4*2 - */ - -typedef struct kiss_fft_state{ - int nfft; -#ifndef FIXED_POINT - kiss_fft_scalar scale; -#endif - int shift; - opus_int16 factors[2*MAXFACTORS]; - const opus_int16 *bitrev; - const kiss_twiddle_cpx *twiddles; -} kiss_fft_state; - -/*typedef struct kiss_fft_state* kiss_fft_cfg;*/ - -/** - * opus_fft_alloc - * - * Initialize a FFT (or IFFT) algorithm's cfg/state buffer. - * - * typical usage: kiss_fft_cfg mycfg=opus_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 opus_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_state *opus_fft_alloc_twiddles(int nfft,void * mem,size_t * lenmem, const kiss_fft_state *base); - -kiss_fft_state *opus_fft_alloc(int nfft,void * mem,size_t * lenmem); - -/** - * opus_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 opus_fft(const kiss_fft_state *cfg,const kiss_fft_cpx *fin,kiss_fft_cpx *fout); -void opus_ifft(const kiss_fft_state *cfg,const kiss_fft_cpx *fin,kiss_fft_cpx *fout); - -void opus_fft_free(const kiss_fft_state *cfg); - -#ifdef __cplusplus -} -#endif - -#endif |