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- /********************************************************************
- * *
- * 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 "ffmpeg_config.h"
- #ifdef _LOW_ACCURACY_
- # define X(n) (((((n)>>22)+1)>>1) - ((((n)>>22)+1)>>9))
- # //define LOOKUP_T const unsigned char
- #else
- # define X(n) (n)
- # //define LOOKUP_T const ogg_int32_t
- #endif
- // #include <codecs.h>
- #include "asm_arm.h"
- // #include "asm_mcf5249.h"
- // #include "codeclib_misc.h"
- #ifndef ICONST_ATTR_TREMOR_WINDOW
- #define ICONST_ATTR_TREMOR_WINDOW ICONST_ATTR
- #endif
- #ifndef ICODE_ATTR_TREMOR_MDCT
- #define ICODE_ATTR_TREMOR_MDCT ICODE_ATTR
- #endif
- #ifndef ICODE_ATTR_TREMOR_NOT_MDCT
- #define ICODE_ATTR_TREMOR_NOT_MDCT ICODE_ATTR
- #endif
- #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_backward(int n, int32_t *in, int32_t *out);
- #endif
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