| /* |
| * 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) */ |
| }; |
