63 lines
1.8 KiB
C++
63 lines
1.8 KiB
C++
/*
|
|
* Copyright 2003-2019 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.
|
|
*/
|
|
|
|
/** \file
|
|
*
|
|
* Library for working with packed 24 bit samples.
|
|
*/
|
|
|
|
#ifndef PCM_PACK_HXX
|
|
#define PCM_PACK_HXX
|
|
|
|
#include <stdint.h>
|
|
|
|
/**
|
|
* Converts padded 24 bit samples (4 bytes per sample) to packed 24
|
|
* bit samples (3 bytes per sample).
|
|
*
|
|
* This function can be used to convert a buffer in-place.
|
|
*
|
|
* @param dest the destination buffer (array of triples)
|
|
* @param src the source buffer
|
|
*/
|
|
void
|
|
pcm_pack_24(uint8_t *dest,
|
|
const int32_t *src, const int32_t *src_end) noexcept;
|
|
|
|
/**
|
|
* Converts packed 24 bit samples (3 bytes per sample) to padded 24
|
|
* bit samples (4 bytes per sample).
|
|
*
|
|
* @param dest the destination buffer
|
|
* @param src the source buffer (array of triples)
|
|
*/
|
|
void
|
|
pcm_unpack_24(int32_t *dest,
|
|
const uint8_t *src, const uint8_t *src_end) noexcept;
|
|
|
|
/**
|
|
* Like pcm_unpack_24(), but assume the source byte order is
|
|
* big-endian. The destination byte order ia always native.
|
|
*/
|
|
void
|
|
pcm_unpack_24be(int32_t *dest,
|
|
const uint8_t *src, const uint8_t *src_end) noexcept;
|
|
|
|
#endif
|