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code/libvorbis/lib/smallft.h
33 строки
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Noire.dev
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04 окт 2024, 00:47
04 окт 2024, 00:47
e3645fc
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/******************************************************************** * * * 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 OggVorbis SOURCE CODE IS (C) COPYRIGHT 1994-2007 * * by the Xiph.Org Foundation https://xiph.org/ * * * ******************************************************************** function: fft transform ********************************************************************/ #ifndef _V_SMFT_H_ #define _V_SMFT_H_ #include "vorbis/codec.h" typedef struct { int n; float *trigcache; int *splitcache; } drft_lookup; extern void drft_forward(drft_lookup *l,float *data); extern void drft_backward(drft_lookup *l,float *data); extern void drft_init(drft_lookup *l,int n); extern void drft_clear(drft_lookup *l); #endif