1 /*
2 	dither: Generate noise for dithering / noise shaping.
3 
4 	copyright 2009 by the mpg123 project - free software under the terms of the LGPL 2.1
5 	see COPYING and AUTHORS files in distribution or http://mpg123.org
6 	initially written by Taihei Monma
7 */
8 
9 #ifndef MPG123_DITHER_H
10 #define MPG123_DITHER_H
11 
12 #define DITHERSIZE 65536
13 enum mpg123_noise_type
14 {
15 	 mpg123_white_noise = 0
16 	,mpg123_tpdf_noise
17 	,mpg123_highpass_tpdf_noise
18 };
19 
20 void mpg123_noise(float* table, size_t count, enum mpg123_noise_type noisetype);
21 void dither_table_init(float *dithertable);
22 
23 #endif
24