2014-02-10 09:10:30 +08:00
|
|
|
/********************************************************************
|
|
|
|
|
* *
|
|
|
|
|
* THIS FILE IS PART OF THE OggTheora 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 Theora SOURCE CODE IS COPYRIGHT (C) 2002-2009 *
|
|
|
|
|
* by the Xiph.Org Foundation and contributors http://www.xiph.org/ *
|
|
|
|
|
* *
|
|
|
|
|
********************************************************************
|
|
|
|
|
|
|
|
|
|
function:
|
2022-09-28 08:18:11 +08:00
|
|
|
last mod: $Id$
|
2014-02-10 09:10:30 +08:00
|
|
|
|
|
|
|
|
********************************************************************/
|
|
|
|
|
|
|
|
|
|
/*Definitions shared by the forward and inverse DCT transforms.*/
|
|
|
|
|
#if !defined(_dct_H)
|
|
|
|
|
# define _dct_H (1)
|
|
|
|
|
|
|
|
|
|
/*cos(n*pi/16) (resp. sin(m*pi/16)) scaled by 65536.*/
|
|
|
|
|
#define OC_C1S7 ((ogg_int32_t)64277)
|
|
|
|
|
#define OC_C2S6 ((ogg_int32_t)60547)
|
|
|
|
|
#define OC_C3S5 ((ogg_int32_t)54491)
|
|
|
|
|
#define OC_C4S4 ((ogg_int32_t)46341)
|
|
|
|
|
#define OC_C5S3 ((ogg_int32_t)36410)
|
|
|
|
|
#define OC_C6S2 ((ogg_int32_t)25080)
|
|
|
|
|
#define OC_C7S1 ((ogg_int32_t)12785)
|
|
|
|
|
|
|
|
|
|
#endif
|
