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author | henry <henry@b3059339-0415-0410-9bf9-f77b7e298cf2> | 2004-12-30 12:11:32 +0000 |
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committer | henry <henry@b3059339-0415-0410-9bf9-f77b7e298cf2> | 2004-12-30 12:11:32 +0000 |
commit | fc91fed21ea71c50273c7c09f88e8d634c1e444e (patch) | |
tree | a4b1344270267c9d16eef135488049bd4e9a96f9 /tremor/mdct.h | |
parent | dbbe18f4500c2707f2e9c0967c7b79312edecd3d (diff) | |
download | mpv-fc91fed21ea71c50273c7c09f88e8d634c1e444e.tar.bz2 mpv-fc91fed21ea71c50273c7c09f88e8d634c1e444e.tar.xz |
internal Tremor decoder for Ogg/Vorbis
git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@14281 b3059339-0415-0410-9bf9-f77b7e298cf2
Diffstat (limited to 'tremor/mdct.h')
-rw-r--r-- | tremor/mdct.h | 52 |
1 files changed, 52 insertions, 0 deletions
diff --git a/tremor/mdct.h b/tremor/mdct.h new file mode 100644 index 0000000000..6d8890720c --- /dev/null +++ b/tremor/mdct.h @@ -0,0 +1,52 @@ +/******************************************************************** + * * + * 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 + + + + + + + + + + + + |