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Diffstat (limited to 'apps/codecs/lib/mdct2.h')
| -rw-r--r-- | apps/codecs/lib/mdct2.h | 75 |
1 files changed, 75 insertions, 0 deletions
diff --git a/apps/codecs/lib/mdct2.h b/apps/codecs/lib/mdct2.h new file mode 100644 index 0000000..b03430b --- /dev/null +++ b/apps/codecs/lib/mdct2.h @@ -0,0 +1,75 @@ +/******************************************************************** + * * + * 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_ + + + +#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 "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 + + + + + + + + + + + + |