/******************************************************************** *                                                                  * * THIS FILE IS PART OF THE OggVorbis 'TREMOR' 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 'TREMOR' SOURCE CODE IS (C) COPYRIGHT 1994-2002    * * BY THE Xiph.Org FOUNDATION http://www.xiph.org/                  * *                                                                  * ******************************************************************** 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#ifdef _LOW_ACCURACY_#define cPI3_8 (0x0062)#define cPI2_8 (0x00b5)#define cPI1_8 (0x00ed)#else#define cPI3_8 (0x30fbc54d)#define cPI2_8 (0x5a82799a)#define cPI1_8 (0x7641af3d)#endifextern void mdct_forward(int n, DATA_TYPE *in, DATA_TYPE *out);extern void mdct_backward(int n, DATA_TYPE *in, DATA_TYPE *out);#endif