1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/media/libtremor/lib/mdct.h Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,52 @@
1.4 +/********************************************************************
1.5 + * *
1.6 + * THIS FILE IS PART OF THE OggVorbis 'TREMOR' CODEC SOURCE CODE. *
1.7 + * *
1.8 + * USE, DISTRIBUTION AND REPRODUCTION OF THIS LIBRARY SOURCE IS *
1.9 + * GOVERNED BY A BSD-STYLE SOURCE LICENSE INCLUDED WITH THIS SOURCE *
1.10 + * IN 'COPYING'. PLEASE READ THESE TERMS BEFORE DISTRIBUTING. *
1.11 + * *
1.12 + * THE OggVorbis 'TREMOR' SOURCE CODE IS (C) COPYRIGHT 1994-2002 *
1.13 + * BY THE Xiph.Org FOUNDATION http://www.xiph.org/ *
1.14 + * *
1.15 + ********************************************************************
1.16 +
1.17 + function: modified discrete cosine transform prototypes
1.18 +
1.19 + ********************************************************************/
1.20 +
1.21 +#ifndef _OGG_mdct_H_
1.22 +#define _OGG_mdct_H_
1.23 +
1.24 +#include "ivorbiscodec.h"
1.25 +#include "misc.h"
1.26 +
1.27 +#define DATA_TYPE ogg_int32_t
1.28 +#define REG_TYPE register ogg_int32_t
1.29 +
1.30 +#ifdef _LOW_ACCURACY_
1.31 +#define cPI3_8 (0x0062)
1.32 +#define cPI2_8 (0x00b5)
1.33 +#define cPI1_8 (0x00ed)
1.34 +#else
1.35 +#define cPI3_8 (0x30fbc54d)
1.36 +#define cPI2_8 (0x5a82799a)
1.37 +#define cPI1_8 (0x7641af3d)
1.38 +#endif
1.39 +
1.40 +extern void mdct_forward(int n, DATA_TYPE *in, DATA_TYPE *out);
1.41 +extern void mdct_backward(int n, DATA_TYPE *in, DATA_TYPE *out);
1.42 +
1.43 +#endif
1.44 +
1.45 +
1.46 +
1.47 +
1.48 +
1.49 +
1.50 +
1.51 +
1.52 +
1.53 +
1.54 +
1.55 +
