author | nemo |
Fri, 12 Aug 2011 12:42:50 -0400 | |
changeset 5551 | 0897b947e7a0 |
parent 5170 | f7e49eff3708 |
permissions | -rw-r--r-- |
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/******************************************************************** |
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* * |
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* THIS FILE IS PART OF THE OggVorbis 'TREMOR' CODEC SOURCE CODE. * |
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* * |
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* USE, DISTRIBUTION AND REPRODUCTION OF THIS LIBRARY SOURCE IS * |
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* GOVERNED BY A BSD-STYLE SOURCE LICENSE INCLUDED WITH THIS SOURCE * |
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* IN 'COPYING'. PLEASE READ THESE TERMS BEFORE DISTRIBUTING. * |
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* * |
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* THE OggVorbis 'TREMOR' SOURCE CODE IS (C) COPYRIGHT 1994-2002 * |
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* BY THE Xiph.Org FOUNDATION http://www.xiph.org/ * |
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* * |
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******************************************************************** |
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function: modified discrete cosine transform prototypes |
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********************************************************************/ |
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#ifndef _OGG_mdct_H_ |
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#define _OGG_mdct_H_ |
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#include "ivorbiscodec.h" |
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#include "misc.h" |
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#define DATA_TYPE ogg_int32_t |
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#define REG_TYPE register ogg_int32_t |
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#ifdef _LOW_ACCURACY_ |
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#define cPI3_8 (0x0062) |
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#define cPI2_8 (0x00b5) |
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#define cPI1_8 (0x00ed) |
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#else |
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#define cPI3_8 (0x30fbc54d) |
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#define cPI2_8 (0x5a82799a) |
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#define cPI1_8 (0x7641af3d) |
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#endif |
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extern void mdct_forward(int n, DATA_TYPE *in, DATA_TYPE *out); |
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extern void mdct_backward(int n, DATA_TYPE *in, DATA_TYPE *out); |
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#endif |
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