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/********************************************************************
* *
* THIS FILE IS PART OF THE OggVorbis 'TREMOR' CODEC SOURCE CODE. *
* *
* THE OggVorbis 'TREMOR' SOURCE CODE IS (C) COPYRIGHT 1994-2002 *
* BY THE Xiph.Org FOUNDATION http://www.xiph.org/ *
* ALL REDISTRIBUTION RIGHTS RESERVED. *
* *
********************************************************************
function: modified discrete cosine transform prototypes
********************************************************************/
#ifndef _OGG_mdct_H_
#define _OGG_mdct_H_
#include "ivorbiscodec.h"
#include "misc.h"
#define DATA_TYPE ogg_int32_t
#define REG_TYPE register ogg_int32_t
#define cPI3_8 (0x61f78a9bUL>>1)
#define cPI2_8 (0xb504f334UL>>1)
#define cPI1_8 (0xec835e7aUL>>1)
extern void mdct_forward(int n, DATA_TYPE *in, DATA_TYPE *out);
extern void mdct_backward(int n, DATA_TYPE *in, DATA_TYPE *out);
#endif
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