diff options
| author | Tim Angus <tim@ngus.net> | 2009-10-03 11:52:53 +0000 |
|---|---|---|
| committer | Tim Angus <tim@ngus.net> | 2013-01-03 00:15:28 +0000 |
| commit | b47a49a03370e7ea42f47623b9f72a5ca799f0e7 (patch) | |
| tree | 9d64d778ded2971d7ebd05970d903d886bd81436 /src/libspeex/smallft.h | |
| parent | 09ceb08b95978feb0a9b737f22ac0f662c7465d6 (diff) | |
* Merge ioq3-r1423
+ IPv6
+ VoIP
+ Stereo rendering
+ Other minor stuff
Diffstat (limited to 'src/libspeex/smallft.h')
| -rw-r--r-- | src/libspeex/smallft.h | 46 |
1 files changed, 46 insertions, 0 deletions
diff --git a/src/libspeex/smallft.h b/src/libspeex/smallft.h new file mode 100644 index 00000000..446e2f65 --- /dev/null +++ b/src/libspeex/smallft.h @@ -0,0 +1,46 @@ +/******************************************************************** + * * + * 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 1994-2001 * + * by the XIPHOPHORUS Company http://www.xiph.org/ * + * * + ******************************************************************** + + function: fft transform + last mod: $Id: smallft.h,v 1.3 2003/09/16 18:35:45 jm Exp $ + + ********************************************************************/ +/** + @file smallft.h + @brief Discrete Rotational Fourier Transform (DRFT) +*/ + +#ifndef _V_SMFT_H_ +#define _V_SMFT_H_ + + +#ifdef __cplusplus +extern "C" { +#endif + +/** Discrete Rotational Fourier Transform lookup */ +struct drft_lookup{ + int n; + float *trigcache; + int *splitcache; +}; + +extern void spx_drft_forward(struct drft_lookup *l,float *data); +extern void spx_drft_backward(struct drft_lookup *l,float *data); +extern void spx_drft_init(struct drft_lookup *l,int n); +extern void spx_drft_clear(struct drft_lookup *l); + +#ifdef __cplusplus +} +#endif + +#endif |