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/*
* Copyright (C) 2003-2011 The Music Player Daemon Project
* http://www.musicpd.org
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#ifndef MPD_PCM_DITHER_H
#define MPD_PCM_DITHER_H
#include <stdint.h>
struct pcm_dither {
int32_t error[3];
int32_t random;
};
static inline void
pcm_dither_24_init(struct pcm_dither *dither)
{
dither->error[0] = dither->error[1] = dither->error[2] = 0;
dither->random = 0;
}
void
pcm_dither_24_to_16(struct pcm_dither *dither,
int16_t *dest, const int32_t *src, const int32_t *src_end);
void
pcm_dither_32_to_16(struct pcm_dither *dither,
int16_t *dest, const int32_t *src, const int32_t *src_end);
#endif
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