mirror of
https://git.kernel.org/pub/scm/bluetooth/bluez.git
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117 lines
3.1 KiB
C
117 lines
3.1 KiB
C
/*
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*
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* BlueZ - Bluetooth protocol stack for Linux
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*
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* Copyright (C) 2006-2010 Nokia Corporation
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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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#define A2DP_CODEC_SBC 0x00
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#define A2DP_CODEC_MPEG12 0x01
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#define A2DP_CODEC_MPEG24 0x02
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#define A2DP_CODEC_ATRAC 0x03
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#define SBC_SAMPLING_FREQ_16000 (1 << 3)
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#define SBC_SAMPLING_FREQ_32000 (1 << 2)
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#define SBC_SAMPLING_FREQ_44100 (1 << 1)
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#define SBC_SAMPLING_FREQ_48000 1
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#define SBC_CHANNEL_MODE_MONO (1 << 3)
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#define SBC_CHANNEL_MODE_DUAL_CHANNEL (1 << 2)
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#define SBC_CHANNEL_MODE_STEREO (1 << 1)
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#define SBC_CHANNEL_MODE_JOINT_STEREO 1
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#define SBC_BLOCK_LENGTH_4 (1 << 3)
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#define SBC_BLOCK_LENGTH_8 (1 << 2)
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#define SBC_BLOCK_LENGTH_12 (1 << 1)
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#define SBC_BLOCK_LENGTH_16 1
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#define SBC_SUBBANDS_4 (1 << 1)
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#define SBC_SUBBANDS_8 1
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#define SBC_ALLOCATION_SNR (1 << 1)
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#define SBC_ALLOCATION_LOUDNESS 1
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#define MPEG_CHANNEL_MODE_MONO (1 << 3)
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#define MPEG_CHANNEL_MODE_DUAL_CHANNEL (1 << 2)
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#define MPEG_CHANNEL_MODE_STEREO (1 << 1)
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#define MPEG_CHANNEL_MODE_JOINT_STEREO 1
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#define MPEG_LAYER_MP1 (1 << 2)
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#define MPEG_LAYER_MP2 (1 << 1)
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#define MPEG_LAYER_MP3 1
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#define MPEG_SAMPLING_FREQ_16000 (1 << 5)
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#define MPEG_SAMPLING_FREQ_22050 (1 << 4)
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#define MPEG_SAMPLING_FREQ_24000 (1 << 3)
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#define MPEG_SAMPLING_FREQ_32000 (1 << 2)
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#define MPEG_SAMPLING_FREQ_44100 (1 << 1)
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#define MPEG_SAMPLING_FREQ_48000 1
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#define MAX_BITPOOL 64
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#define MIN_BITPOOL 2
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#if __BYTE_ORDER == __LITTLE_ENDIAN
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typedef struct {
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uint8_t channel_mode:4;
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uint8_t frequency:4;
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uint8_t allocation_method:2;
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uint8_t subbands:2;
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uint8_t block_length:4;
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uint8_t min_bitpool;
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uint8_t max_bitpool;
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} __attribute__ ((packed)) a2dp_sbc_t;
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typedef struct {
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uint8_t channel_mode:4;
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uint8_t crc:1;
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uint8_t layer:3;
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uint8_t frequency:6;
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uint8_t mpf:1;
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uint8_t rfa:1;
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uint16_t bitrate;
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} __attribute__ ((packed)) a2dp_mpeg_t;
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#elif __BYTE_ORDER == __BIG_ENDIAN
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typedef struct {
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uint8_t frequency:4;
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uint8_t channel_mode:4;
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uint8_t block_length:4;
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uint8_t subbands:2;
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uint8_t allocation_method:2;
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uint8_t min_bitpool;
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uint8_t max_bitpool;
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} __attribute__ ((packed)) a2dp_sbc_t;
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typedef struct {
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uint8_t layer:3;
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uint8_t crc:1;
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uint8_t channel_mode:4;
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uint8_t rfa:1;
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uint8_t mpf:1;
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uint8_t frequency:6;
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uint16_t bitrate;
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} __attribute__ ((packed)) a2dp_mpeg_t;
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#else
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#error "Unknown byte order"
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#endif
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