2008-08-11 13:26:10 -03:00
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/*
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*
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* Bluetooth low-complexity, subband codec (SBC) library
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*
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2009-01-08 19:13:49 +02:00
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* Copyright (C) 2004-2009 Marcel Holtmann <marcel@holtmann.org>
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2008-08-11 13:26:10 -03:00
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* Copyright (C) 2004-2005 Henryk Ploetz <henryk@ploetzli.ch>
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* Copyright (C) 2005-2006 Brad Midgley <bmidgley@xmission.com>
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*
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library 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 GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; 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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#ifndef __SBC_H
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#define __SBC_H
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#ifdef __cplusplus
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extern "C" {
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#endif
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#include <stdint.h>
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/* sampling frequency */
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#define SBC_FREQ_16000 0x00
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#define SBC_FREQ_32000 0x01
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#define SBC_FREQ_44100 0x02
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#define SBC_FREQ_48000 0x03
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/* blocks */
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#define SBC_BLK_4 0x00
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#define SBC_BLK_8 0x01
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#define SBC_BLK_12 0x02
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#define SBC_BLK_16 0x03
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/* channel mode */
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#define SBC_MODE_MONO 0x00
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#define SBC_MODE_DUAL_CHANNEL 0x01
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#define SBC_MODE_STEREO 0x02
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#define SBC_MODE_JOINT_STEREO 0x03
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/* allocation method */
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#define SBC_AM_LOUDNESS 0x00
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#define SBC_AM_SNR 0x01
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/* subbands */
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#define SBC_SB_4 0x00
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#define SBC_SB_8 0x01
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/* Data endianess */
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#define SBC_LE 0x00
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#define SBC_BE 0x01
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struct sbc_struct {
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unsigned long flags;
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uint8_t frequency;
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uint8_t blocks;
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uint8_t subbands;
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uint8_t mode;
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uint8_t allocation;
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uint8_t bitpool;
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uint8_t endian;
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void *priv;
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};
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typedef struct sbc_struct sbc_t;
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int sbc_init(sbc_t *sbc, unsigned long flags);
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int sbc_reinit(sbc_t *sbc, unsigned long flags);
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int sbc_parse(sbc_t *sbc, void *input, int input_len);
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int sbc_decode(sbc_t *sbc, void *input, int input_len, void *output,
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int output_len, int *len);
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int sbc_encode(sbc_t *sbc, void *input, int input_len, void *output,
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int output_len, int *written);
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int sbc_get_frame_length(sbc_t *sbc);
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int sbc_get_frame_duration(sbc_t *sbc);
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2009-01-08 19:13:49 +02:00
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uint16_t sbc_get_codesize(sbc_t *sbc);
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2008-08-11 13:26:10 -03:00
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void sbc_finish(sbc_t *sbc);
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#ifdef __cplusplus
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}
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#endif
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#endif /* __SBC_H */
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