mirror of
https://git.kernel.org/pub/scm/bluetooth/bluez.git
synced 2024-11-29 07:04:19 +08:00
35906565c9
The header files with constants and structures for audio specific interaction with Pulseaudio are suppose to be under LGPL license. For some odd reason a2dp-codecs.h ended up being under GPL license which is against the intention of this being shared and re-used by non-GPL programs. Fix this now to avoid any future confusion.
117 lines
3.1 KiB
C
117 lines
3.1 KiB
C
/*
|
|
*
|
|
* BlueZ - Bluetooth protocol stack for Linux
|
|
*
|
|
* Copyright (C) 2006-2010 Nokia Corporation
|
|
* Copyright (C) 2004-2010 Marcel Holtmann <marcel@holtmann.org>
|
|
*
|
|
*
|
|
* 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
|
|
*
|
|
*/
|
|
|
|
#define A2DP_CODEC_SBC 0x00
|
|
#define A2DP_CODEC_MPEG12 0x01
|
|
#define A2DP_CODEC_MPEG24 0x02
|
|
#define A2DP_CODEC_ATRAC 0x03
|
|
|
|
#define SBC_SAMPLING_FREQ_16000 (1 << 3)
|
|
#define SBC_SAMPLING_FREQ_32000 (1 << 2)
|
|
#define SBC_SAMPLING_FREQ_44100 (1 << 1)
|
|
#define SBC_SAMPLING_FREQ_48000 1
|
|
|
|
#define SBC_CHANNEL_MODE_MONO (1 << 3)
|
|
#define SBC_CHANNEL_MODE_DUAL_CHANNEL (1 << 2)
|
|
#define SBC_CHANNEL_MODE_STEREO (1 << 1)
|
|
#define SBC_CHANNEL_MODE_JOINT_STEREO 1
|
|
|
|
#define SBC_BLOCK_LENGTH_4 (1 << 3)
|
|
#define SBC_BLOCK_LENGTH_8 (1 << 2)
|
|
#define SBC_BLOCK_LENGTH_12 (1 << 1)
|
|
#define SBC_BLOCK_LENGTH_16 1
|
|
|
|
#define SBC_SUBBANDS_4 (1 << 1)
|
|
#define SBC_SUBBANDS_8 1
|
|
|
|
#define SBC_ALLOCATION_SNR (1 << 1)
|
|
#define SBC_ALLOCATION_LOUDNESS 1
|
|
|
|
#define MPEG_CHANNEL_MODE_MONO (1 << 3)
|
|
#define MPEG_CHANNEL_MODE_DUAL_CHANNEL (1 << 2)
|
|
#define MPEG_CHANNEL_MODE_STEREO (1 << 1)
|
|
#define MPEG_CHANNEL_MODE_JOINT_STEREO 1
|
|
|
|
#define MPEG_LAYER_MP1 (1 << 2)
|
|
#define MPEG_LAYER_MP2 (1 << 1)
|
|
#define MPEG_LAYER_MP3 1
|
|
|
|
#define MPEG_SAMPLING_FREQ_16000 (1 << 5)
|
|
#define MPEG_SAMPLING_FREQ_22050 (1 << 4)
|
|
#define MPEG_SAMPLING_FREQ_24000 (1 << 3)
|
|
#define MPEG_SAMPLING_FREQ_32000 (1 << 2)
|
|
#define MPEG_SAMPLING_FREQ_44100 (1 << 1)
|
|
#define MPEG_SAMPLING_FREQ_48000 1
|
|
|
|
#define MAX_BITPOOL 64
|
|
#define MIN_BITPOOL 2
|
|
|
|
#if __BYTE_ORDER == __LITTLE_ENDIAN
|
|
|
|
typedef struct {
|
|
uint8_t channel_mode:4;
|
|
uint8_t frequency:4;
|
|
uint8_t allocation_method:2;
|
|
uint8_t subbands:2;
|
|
uint8_t block_length:4;
|
|
uint8_t min_bitpool;
|
|
uint8_t max_bitpool;
|
|
} __attribute__ ((packed)) a2dp_sbc_t;
|
|
|
|
typedef struct {
|
|
uint8_t channel_mode:4;
|
|
uint8_t crc:1;
|
|
uint8_t layer:3;
|
|
uint8_t frequency:6;
|
|
uint8_t mpf:1;
|
|
uint8_t rfa:1;
|
|
uint16_t bitrate;
|
|
} __attribute__ ((packed)) a2dp_mpeg_t;
|
|
|
|
#elif __BYTE_ORDER == __BIG_ENDIAN
|
|
|
|
typedef struct {
|
|
uint8_t frequency:4;
|
|
uint8_t channel_mode:4;
|
|
uint8_t block_length:4;
|
|
uint8_t subbands:2;
|
|
uint8_t allocation_method:2;
|
|
uint8_t min_bitpool;
|
|
uint8_t max_bitpool;
|
|
} __attribute__ ((packed)) a2dp_sbc_t;
|
|
|
|
typedef struct {
|
|
uint8_t layer:3;
|
|
uint8_t crc:1;
|
|
uint8_t channel_mode:4;
|
|
uint8_t rfa:1;
|
|
uint8_t mpf:1;
|
|
uint8_t frequency:6;
|
|
uint16_t bitrate;
|
|
} __attribute__ ((packed)) a2dp_mpeg_t;
|
|
|
|
#else
|
|
#error "Unknown byte order"
|
|
#endif
|