src/pcm_byteswap.h

   1 /*
   2  * Copyright (C) 2003-2009 The Music Player Daemon Project
   3  * http://www.musicpd.org
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; either version 2 of the License, or
   8  * (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License along
  16  * with this program; if not, write to the Free Software Foundation, Inc.,
  17  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  18  */
  19
  20 #ifndef MPD_PCM_BYTESWAP_H
  21 #define MPD_PCM_BYTESWAP_H
  22
  23 #include <stdint.h>
  24 #include <stddef.h>
  25
  26 struct pcm_buffer;
  27
  28 /**
  29  * Changes the endianness of 16 bit PCM data.
  30  *
  31  * @param buffer the destination pcm_buffer object
  32  * @param src the source PCM buffer
  33  * @param src_size the number of bytes in #src
  34  * @return the destination buffer
  35  */
  36 const int16_t *pcm_byteswap_16(struct pcm_buffer *buffer,
  37                                const int16_t *src, size_t len);
  38
  39 /**
  40  * Changes the endianness of 32-bit (or 24-bit) PCM data.
  41  *
  42  * @param buffer the destination pcm_buffer object
  43  * @param src the source PCM buffer
  44  * @param src_size the number of bytes in #src
  45  * @return the destination buffer
  46  */
  47 const int32_t *pcm_byteswap_32(struct pcm_buffer *buffer,
  48                                const int32_t *src, size_t len);
  49
  50 #endif