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/*
*
* 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 A2DP_CODEC_VENDOR 0xFF
#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 MAX_BITPOOL 64
#define MIN_BITPOOL 2
#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 MPEG_BIT_RATE_VBR 0x8000
#define MPEG_BIT_RATE_320000 0x4000
#define MPEG_BIT_RATE_256000 0x2000
#define MPEG_BIT_RATE_224000 0x1000
#define MPEG_BIT_RATE_192000 0x0800
#define MPEG_BIT_RATE_160000 0x0400
#define MPEG_BIT_RATE_128000 0x0200
#define MPEG_BIT_RATE_112000 0x0100
#define MPEG_BIT_RATE_96000 0x0080
#define MPEG_BIT_RATE_80000 0x0040
#define MPEG_BIT_RATE_64000 0x0020
#define MPEG_BIT_RATE_56000 0x0010
#define MPEG_BIT_RATE_48000 0x0008
#define MPEG_BIT_RATE_40000 0x0004
#define MPEG_BIT_RATE_32000 0x0002
#define MPEG_BIT_RATE_FREE 0x0001
#define AAC_OBJECT_TYPE_MPEG2_AAC_LC 0x80
#define AAC_OBJECT_TYPE_MPEG4_AAC_LC 0x40
#define AAC_OBJECT_TYPE_MPEG4_AAC_LTP 0x20
#define AAC_OBJECT_TYPE_MPEG4_AAC_SCA 0x10
#define AAC_SAMPLING_FREQ_8000 0x0800
#define AAC_SAMPLING_FREQ_11025 0x0400
#define AAC_SAMPLING_FREQ_12000 0x0200
#define AAC_SAMPLING_FREQ_16000 0x0100
#define AAC_SAMPLING_FREQ_22050 0x0080
#define AAC_SAMPLING_FREQ_24000 0x0040
#define AAC_SAMPLING_FREQ_32000 0x0020
#define AAC_SAMPLING_FREQ_44100 0x0010
#define AAC_SAMPLING_FREQ_48000 0x0008
#define AAC_SAMPLING_FREQ_64000 0x0004
#define AAC_SAMPLING_FREQ_88200 0x0002
#define AAC_SAMPLING_FREQ_96000 0x0001
#define AAC_CHANNELS_1 0x02
#define AAC_CHANNELS_2 0x01
#define AAC_GET_BITRATE(a) ((a).bitrate1 << 16 | \
(a).bitrate2 << 8 | (a).bitrate3)
#define AAC_GET_FREQUENCY(a) ((a).frequency1 << 4 | (a).frequency2)
#define AAC_SET_BITRATE(a, b) \
do { \
(a).bitrate1 = (b >> 16) & 0x7f; \
(a).bitrate2 = (b >> 8) & 0xff; \
(a).bitrate3 = b & 0xff; \
} while (0)
#define AAC_SET_FREQUENCY(a, f) \
do { \
(a).frequency1 = (f >> 4) & 0xff; \
(a).frequency2 = f & 0x0f; \
} while (0)
#define AAC_INIT_BITRATE(b) \
.bitrate1 = (b >> 16) & 0x7f, \
.bitrate2 = (b >> 8) & 0xff, \
.bitrate3 = b & 0xff,
#define AAC_INIT_FREQUENCY(f) \
.frequency1 = (f >> 4) & 0xff, \
.frequency2 = f & 0x0f,
#define APTX_VENDOR_ID 0x0000004f
#define APTX_CODEC_ID 0x0001
#define APTX_CHANNEL_MODE_MONO 0x01
#define APTX_CHANNEL_MODE_STEREO 0x02
#define APTX_SAMPLING_FREQ_16000 0x08
#define APTX_SAMPLING_FREQ_32000 0x04
#define APTX_SAMPLING_FREQ_44100 0x02
#define APTX_SAMPLING_FREQ_48000 0x01
#define LDAC_VENDOR_ID 0x0000012d
#define LDAC_CODEC_ID 0x00aa
typedef struct {
uint32_t vendor_id;
uint16_t codec_id;
} __attribute__ ((packed)) a2dp_vendor_codec_t;
#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;
typedef struct {
uint8_t object_type;
uint8_t frequency1;
uint8_t rfa:2;
uint8_t channels:2;
uint8_t frequency2:4;
uint8_t bitrate1:7;
uint8_t vbr:1;
uint8_t bitrate2;
uint8_t bitrate3;
} __attribute__ ((packed)) a2dp_aac_t;
typedef struct {
a2dp_vendor_codec_t info;
uint8_t channel_mode:4;
uint8_t frequency:4;
} __attribute__ ((packed)) a2dp_aptx_t;
typedef struct {
a2dp_vendor_codec_t info;
uint8_t unknown[2];
} __attribute__ ((packed)) a2dp_ldac_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;
typedef struct {
uint8_t object_type;
uint8_t frequency1;
uint8_t frequency2:4;
uint8_t channels:2;
uint8_t rfa:2;
uint8_t vbr:1;
uint8_t bitrate1:7;
uint8_t bitrate2;
uint8_t bitrate3;
} __attribute__ ((packed)) a2dp_aac_t;
typedef struct {
a2dp_vendor_codec_t info;
uint8_t frequency:4;
uint8_t channel_mode:4;
} __attribute__ ((packed)) a2dp_aptx_t;
#else
#error "Unknown byte order"
#endif
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