/* * 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, unsigned num_samples); void pcm_dither_32_to_16(struct pcm_dither *dither, int16_t *dest, const int32_t *src, unsigned num_samples); #endif