mdct.h
资源名称:tcpmp.rar [点击查看]
上传用户:wstnjxml
上传日期:2014-04-03
资源大小:7248k
文件大小:1k
源码类别:
Windows CE
开发平台:
C/C++
- /********************************************************************
- * *
- * 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)
- #endif
- 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