1 /* 2 * 3 * BlueZ - Bluetooth protocol stack for Linux 4 * 5 * Copyright (C) 2006-2010 Nokia Corporation 6 * Copyright (C) 2004-2010 Marcel Holtmann <marcel@holtmann.org> 7 * 8 * 9 * This library is free software; you can redistribute it and/or 10 * modify it under the terms of the GNU Lesser General Public 11 * License as published by the Free Software Foundation; either 12 * version 2.1 of the License, or (at your option) any later version. 13 * 14 * This library is distributed in the hope that it will be useful, 15 * but WITHOUT ANY WARRANTY; without even the implied warranty of 16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 17 * Lesser General Public License for more details. 18 * 19 * You should have received a copy of the GNU Lesser General Public 20 * License along with this library; if not, write to the Free Software 21 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA 22 * 23 */ 24 25 #define A2DP_CODEC_SBC 0x00 26 #define A2DP_CODEC_MPEG12 0x01 27 #define A2DP_CODEC_MPEG24 0x02 28 #define A2DP_CODEC_ATRAC 0x03 29 #define A2DP_CODEC_VENDOR 0xFF 30 31 #define SBC_SAMPLING_FREQ_16000 (1 << 3) 32 #define SBC_SAMPLING_FREQ_32000 (1 << 2) 33 #define SBC_SAMPLING_FREQ_44100 (1 << 1) 34 #define SBC_SAMPLING_FREQ_48000 1 35 36 #define SBC_CHANNEL_MODE_MONO (1 << 3) 37 #define SBC_CHANNEL_MODE_DUAL_CHANNEL (1 << 2) 38 #define SBC_CHANNEL_MODE_STEREO (1 << 1) 39 #define SBC_CHANNEL_MODE_JOINT_STEREO 1 40 41 #define SBC_BLOCK_LENGTH_4 (1 << 3) 42 #define SBC_BLOCK_LENGTH_8 (1 << 2) 43 #define SBC_BLOCK_LENGTH_12 (1 << 1) 44 #define SBC_BLOCK_LENGTH_16 1 45 46 #define SBC_SUBBANDS_4 (1 << 1) 47 #define SBC_SUBBANDS_8 1 48 49 #define SBC_ALLOCATION_SNR (1 << 1) 50 #define SBC_ALLOCATION_LOUDNESS 1 51 52 #define MAX_BITPOOL 64 53 #define MIN_BITPOOL 2 54 55 #define MPEG_CHANNEL_MODE_MONO (1 << 3) 56 #define MPEG_CHANNEL_MODE_DUAL_CHANNEL (1 << 2) 57 #define MPEG_CHANNEL_MODE_STEREO (1 << 1) 58 #define MPEG_CHANNEL_MODE_JOINT_STEREO 1 59 60 #define MPEG_LAYER_MP1 (1 << 2) 61 #define MPEG_LAYER_MP2 (1 << 1) 62 #define MPEG_LAYER_MP3 1 63 64 #define MPEG_SAMPLING_FREQ_16000 (1 << 5) 65 #define MPEG_SAMPLING_FREQ_22050 (1 << 4) 66 #define MPEG_SAMPLING_FREQ_24000 (1 << 3) 67 #define MPEG_SAMPLING_FREQ_32000 (1 << 2) 68 #define MPEG_SAMPLING_FREQ_44100 (1 << 1) 69 #define MPEG_SAMPLING_FREQ_48000 1 70 71 #define MPEG_BIT_RATE_VBR 0x8000 72 #define MPEG_BIT_RATE_320000 0x4000 73 #define MPEG_BIT_RATE_256000 0x2000 74 #define MPEG_BIT_RATE_224000 0x1000 75 #define MPEG_BIT_RATE_192000 0x0800 76 #define MPEG_BIT_RATE_160000 0x0400 77 #define MPEG_BIT_RATE_128000 0x0200 78 #define MPEG_BIT_RATE_112000 0x0100 79 #define MPEG_BIT_RATE_96000 0x0080 80 #define MPEG_BIT_RATE_80000 0x0040 81 #define MPEG_BIT_RATE_64000 0x0020 82 #define MPEG_BIT_RATE_56000 0x0010 83 #define MPEG_BIT_RATE_48000 0x0008 84 #define MPEG_BIT_RATE_40000 0x0004 85 #define MPEG_BIT_RATE_32000 0x0002 86 #define MPEG_BIT_RATE_FREE 0x0001 87 88 #if __BYTE_ORDER == __LITTLE_ENDIAN 89 90 typedef struct { 91 uint8_t channel_mode : 4; 92 uint8_t frequency : 4; 93 uint8_t allocation_method : 2; 94 uint8_t subbands : 2; 95 uint8_t block_length : 4; 96 uint8_t min_bitpool; 97 uint8_t max_bitpool; 98 } __attribute__((packed)) a2dp_sbc_t; 99 100 typedef struct { 101 uint8_t channel_mode : 4; 102 uint8_t crc : 1; 103 uint8_t layer : 3; 104 uint8_t frequency : 6; 105 uint8_t mpf : 1; 106 uint8_t rfa : 1; 107 uint16_t bitrate; 108 } __attribute__((packed)) a2dp_mpeg_t; 109 110 #elif __BYTE_ORDER == __BIG_ENDIAN 111 112 typedef struct { 113 uint8_t frequency : 4; 114 uint8_t channel_mode : 4; 115 uint8_t block_length : 4; 116 uint8_t subbands : 2; 117 uint8_t allocation_method : 2; 118 uint8_t min_bitpool; 119 uint8_t max_bitpool; 120 } __attribute__((packed)) a2dp_sbc_t; 121 122 typedef struct { 123 uint8_t layer : 3; 124 uint8_t crc : 1; 125 uint8_t channel_mode : 4; 126 uint8_t rfa : 1; 127 uint8_t mpf : 1; 128 uint8_t frequency : 6; 129 uint16_t bitrate; 130 } __attribute__((packed)) a2dp_mpeg_t; 131 132 #else 133 #error "Unknown byte order" 134 #endif 135 136 typedef struct { 137 uint8_t vendor_id[4]; 138 uint8_t codec_id[2]; 139 } __attribute__((packed)) a2dp_vendor_codec_t; 140