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godot/thirdparty/libtheora/dct.h
2022-10-18 21:15:13 -03:00

32 lines
1.3 KiB
C++

/********************************************************************
* *
* 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:
last mod: $Id$
********************************************************************/
/*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