/*
 * Bluetooth low-complexity, subband codec (SBC) library
 * Copyright (C) 2004-2010  Marcel Holtmann <marcel@holtmann.org>
 *
 * SPDX-License-Identifier: GPL-2.0-or-later
 */

#include <byteswap.h>

#if __BYTE_ORDER == __LITTLE_ENDIAN
#define COMPOSE_ID(a,b,c,d)	((a) | ((b)<<8) | ((c)<<16) | ((d)<<24))
#define LE_SHORT(v)		(v)
#define LE_INT(v)		(v)
#define BE_SHORT(v)		bswap_16(v)
#define BE_INT(v)		bswap_32(v)
#elif __BYTE_ORDER == __BIG_ENDIAN
#define COMPOSE_ID(a,b,c,d)	((d) | ((c)<<8) | ((b)<<16) | ((a)<<24))
#define LE_SHORT(v)		bswap_16(v)
#define LE_INT(v)		bswap_32(v)
#define BE_SHORT(v)		(v)
#define BE_INT(v)		(v)
#else
#error "Wrong endian"
#endif

#define AU_MAGIC		COMPOSE_ID('.','s','n','d')

#define AU_FMT_ULAW		1
#define AU_FMT_LIN8		2
#define AU_FMT_LIN16		3

struct au_header {
	uint32_t magic;		/* '.snd' */
	uint32_t hdr_size;	/* size of header (min 24) */
	uint32_t data_size;	/* size of data */
	uint32_t encoding;	/* see to AU_FMT_XXXX */
	uint32_t sample_rate;	/* sample rate */
	uint32_t channels;	/* number of channels (voices) */
};