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56 lines
1.7 KiB
C
56 lines
1.7 KiB
C
/*
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*
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* Bluetooth low-complexity, subband codec (SBC) library
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*
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* Copyright (C) 2004-2010 Marcel Holtmann <marcel@holtmann.org>
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*
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*
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*/
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#include <byteswap.h>
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#if __BYTE_ORDER == __LITTLE_ENDIAN
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#define COMPOSE_ID(a,b,c,d) ((a) | ((b)<<8) | ((c)<<16) | ((d)<<24))
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#define LE_SHORT(v) (v)
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#define LE_INT(v) (v)
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#define BE_SHORT(v) bswap_16(v)
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#define BE_INT(v) bswap_32(v)
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#elif __BYTE_ORDER == __BIG_ENDIAN
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#define COMPOSE_ID(a,b,c,d) ((d) | ((c)<<8) | ((b)<<16) | ((a)<<24))
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#define LE_SHORT(v) bswap_16(v)
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#define LE_INT(v) bswap_32(v)
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#define BE_SHORT(v) (v)
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#define BE_INT(v) (v)
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#else
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#error "Wrong endian"
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#endif
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#define AU_MAGIC COMPOSE_ID('.','s','n','d')
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#define AU_FMT_ULAW 1
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#define AU_FMT_LIN8 2
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#define AU_FMT_LIN16 3
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struct au_header {
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uint32_t magic; /* '.snd' */
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uint32_t hdr_size; /* size of header (min 24) */
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uint32_t data_size; /* size of data */
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uint32_t encoding; /* see to AU_FMT_XXXX */
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uint32_t sample_rate; /* sample rate */
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uint32_t channels; /* number of channels (voices) */
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};
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