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mpv/libfaad2/dither.h
alex e24087509a synced with current cvs
git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@10990 b3059339-0415-0410-9bf9-f77b7e298cf2
2003-10-03 22:23:26 +00:00

48 lines
1.2 KiB
C

/* This program is licensed under the GNU Library General Public License, version 2,
* a copy of which is included with this program (with filename LICENSE.LGPL).
*
* (c) 2002 John Edwards
*
* rand_t header.
*
* last modified: $ID:$
*/
#include "common.h"
#ifndef __RAND_T_H
#define __RAND_T_H
#ifdef __cplusplus
extern "C" {
#endif
#ifndef FIXED_POINT
typedef struct {
const float32_t* FilterCoeff;
uint64_t Mask;
double Add;
float32_t Dither;
float32_t ErrorHistory [2] [16]; // max. 2 channels, 16th order Noise shaping
float32_t DitherHistory [2] [16];
int32_t LastRandomNumber [2];
} dither_t;
extern dither_t Dither;
extern double doubletmp;
//static const uint8_t Parity [256];
uint32_t random_int ( void );
extern double scalar16 ( const float32_t* x, const float32_t* y );
extern double Random_Equi ( double mult );
extern double Random_Triangular ( double mult );
void Init_Dither ( uint8_t bits, uint8_t shapingtype );
#endif
#ifdef __cplusplus
}
#endif
#endif