From e4eb4670108ad2b4a0d9c3044e12ed0d933f834e Mon Sep 17 00:00:00 2001 From: Luiz Augusto von Dentz Date: Mon, 14 Mar 2011 14:46:10 -0300 Subject: build: move sbc related files to its own directory This should make it easier to apply patches from BlueZ which also uses sbc subdir for this files. --- src/modules/bluetooth/sbc/sbc.h | 111 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 111 insertions(+) create mode 100644 src/modules/bluetooth/sbc/sbc.h (limited to 'src/modules/bluetooth/sbc/sbc.h') diff --git a/src/modules/bluetooth/sbc/sbc.h b/src/modules/bluetooth/sbc/sbc.h new file mode 100644 index 00000000..65435884 --- /dev/null +++ b/src/modules/bluetooth/sbc/sbc.h @@ -0,0 +1,111 @@ +/* + * + * Bluetooth low-complexity, subband codec (SBC) library + * + * Copyright (C) 2004-2009 Marcel Holtmann + * Copyright (C) 2004-2005 Henryk Ploetz + * Copyright (C) 2005-2006 Brad Midgley + * + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + * + */ + +#ifndef __SBC_H +#define __SBC_H + +#ifdef __cplusplus +extern "C" { +#endif + +#include +#include + +/* sampling frequency */ +#define SBC_FREQ_16000 0x00 +#define SBC_FREQ_32000 0x01 +#define SBC_FREQ_44100 0x02 +#define SBC_FREQ_48000 0x03 + +/* blocks */ +#define SBC_BLK_4 0x00 +#define SBC_BLK_8 0x01 +#define SBC_BLK_12 0x02 +#define SBC_BLK_16 0x03 + +/* channel mode */ +#define SBC_MODE_MONO 0x00 +#define SBC_MODE_DUAL_CHANNEL 0x01 +#define SBC_MODE_STEREO 0x02 +#define SBC_MODE_JOINT_STEREO 0x03 + +/* allocation method */ +#define SBC_AM_LOUDNESS 0x00 +#define SBC_AM_SNR 0x01 + +/* subbands */ +#define SBC_SB_4 0x00 +#define SBC_SB_8 0x01 + +/* Data endianess */ +#define SBC_LE 0x00 +#define SBC_BE 0x01 + +struct sbc_struct { + unsigned long flags; + + uint8_t frequency; + uint8_t blocks; + uint8_t subbands; + uint8_t mode; + uint8_t allocation; + uint8_t bitpool; + uint8_t endian; + + void *priv; + void *priv_alloc_base; +}; + +typedef struct sbc_struct sbc_t; + +int sbc_init(sbc_t *sbc, unsigned long flags); +int sbc_reinit(sbc_t *sbc, unsigned long flags); + +ssize_t sbc_parse(sbc_t *sbc, const void *input, size_t input_len); + +ssize_t sbc_decode(sbc_t *sbc, const void *input, size_t input_len, + void *output, size_t output_len, size_t *written); + +/* Encodes ONE input block into ONE output block */ +ssize_t sbc_encode(sbc_t *sbc, const void *input, size_t input_len, + void *output, size_t output_len, size_t *written); + +/* Returns the output block size in bytes */ +size_t sbc_get_frame_length(sbc_t *sbc); + +/* Returns the time one input/output block takes to play in msec*/ +unsigned sbc_get_frame_duration(sbc_t *sbc); + +/* Returns the input block size in bytes */ +size_t sbc_get_codesize(sbc_t *sbc); + +const char *sbc_get_implementation_info(sbc_t *sbc); +void sbc_finish(sbc_t *sbc); + +#ifdef __cplusplus +} +#endif + +#endif /* __SBC_H */ -- cgit From 177948a6f23cbc58530ae394f791ba9fd764899a Mon Sep 17 00:00:00 2001 From: Siarhei Siamashka Date: Mon, 14 Mar 2011 15:21:53 -0300 Subject: sbc: fix signedness of parameters The written parameter of sbc_encode can be negative so it should be ssize_t instead of size_t. --- src/modules/bluetooth/sbc/sbc.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'src/modules/bluetooth/sbc/sbc.h') diff --git a/src/modules/bluetooth/sbc/sbc.h b/src/modules/bluetooth/sbc/sbc.h index 65435884..c9c56d38 100644 --- a/src/modules/bluetooth/sbc/sbc.h +++ b/src/modules/bluetooth/sbc/sbc.h @@ -90,7 +90,7 @@ ssize_t sbc_decode(sbc_t *sbc, const void *input, size_t input_len, /* Encodes ONE input block into ONE output block */ ssize_t sbc_encode(sbc_t *sbc, const void *input, size_t input_len, - void *output, size_t output_len, size_t *written); + void *output, size_t output_len, ssize_t *written); /* Returns the output block size in bytes */ size_t sbc_get_frame_length(sbc_t *sbc); -- cgit