3 * Bluetooth low-complexity, subband codec (SBC) library
5 * Copyright (C) 2004-2008 Marcel Holtmann <marcel@holtmann.org>
6 * Copyright (C) 2004-2005 Henryk Ploetz <henryk@ploetzli.ch>
7 * Copyright (C) 2005-2006 Brad Midgley <bmidgley@xmission.com>
10 * This library is free software; you can redistribute it and/or
11 * modify it under the terms of the GNU Lesser General Public
12 * License as published by the Free Software Foundation; either
13 * version 2.1 of the License, or (at your option) any later version.
15 * This library is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
18 * Lesser General Public License for more details.
20 * You should have received a copy of the GNU Lesser General Public
21 * License along with this library; if not, write to the Free Software
22 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
35 /* sampling frequency */
36 #define SBC_FREQ_16000 0x00
37 #define SBC_FREQ_32000 0x01
38 #define SBC_FREQ_44100 0x02
39 #define SBC_FREQ_48000 0x03
42 #define SBC_BLK_4 0x00
43 #define SBC_BLK_8 0x01
44 #define SBC_BLK_12 0x02
45 #define SBC_BLK_16 0x03
48 #define SBC_MODE_MONO 0x00
49 #define SBC_MODE_DUAL_CHANNEL 0x01
50 #define SBC_MODE_STEREO 0x02
51 #define SBC_MODE_JOINT_STEREO 0x03
53 /* allocation method */
54 #define SBC_AM_LOUDNESS 0x00
55 #define SBC_AM_SNR 0x01
79 typedef struct sbc_struct sbc_t
;
81 int sbc_init(sbc_t
*sbc
, unsigned long flags
);
82 int sbc_reinit(sbc_t
*sbc
, unsigned long flags
);
83 int sbc_parse(sbc_t
*sbc
, void *input
, int input_len
);
84 int sbc_decode(sbc_t
*sbc
, void *input
, int input_len
, void *output
,
85 int output_len
, int *len
);
86 int sbc_encode(sbc_t
*sbc
, void *input
, int input_len
, void *output
,
87 int output_len
, int *written
);
88 int sbc_get_frame_length(sbc_t
*sbc
);
89 int sbc_get_frame_duration(sbc_t
*sbc
);
90 int sbc_get_codesize(sbc_t
*sbc
);
91 void sbc_finish(sbc_t
*sbc
);