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0001 /* 0002 * BlueZ - Bluetooth protocol stack for Linux 0003 * 0004 * SPDX-FileCopyrightText: 2006-2010 Nokia Corporation 0005 * SPDX-FileCopyrightText: 2004-2010 Marcel Holtmann <marcel@holtmann.org> 0006 * 0007 * SPDX-License-Identifier: LGPL-2.1-or-later 0008 */ 0009 0010 #ifndef BLUEZQT_A2DPCODECS_H 0011 #define BLUEZQT_A2DPCODECS_H 0012 0013 #include <endian.h> 0014 #include <stdint.h> 0015 0016 // clang-format off 0017 0018 #define A2DP_CODEC_SBC 0x00 0019 #define A2DP_CODEC_MPEG12 0x01 0020 #define A2DP_CODEC_MPEG24 0x02 0021 #define A2DP_CODEC_ATRAC 0x04 0022 #define A2DP_CODEC_VENDOR 0xFF 0023 0024 #define SBC_SAMPLING_FREQ_16000 (1 << 3) 0025 #define SBC_SAMPLING_FREQ_32000 (1 << 2) 0026 #define SBC_SAMPLING_FREQ_44100 (1 << 1) 0027 #define SBC_SAMPLING_FREQ_48000 1 0028 0029 #define SBC_CHANNEL_MODE_MONO (1 << 3) 0030 #define SBC_CHANNEL_MODE_DUAL_CHANNEL (1 << 2) 0031 #define SBC_CHANNEL_MODE_STEREO (1 << 1) 0032 #define SBC_CHANNEL_MODE_JOINT_STEREO 1 0033 0034 #define SBC_BLOCK_LENGTH_4 (1 << 3) 0035 #define SBC_BLOCK_LENGTH_8 (1 << 2) 0036 #define SBC_BLOCK_LENGTH_12 (1 << 1) 0037 #define SBC_BLOCK_LENGTH_16 1 0038 0039 #define SBC_SUBBANDS_4 (1 << 1) 0040 #define SBC_SUBBANDS_8 1 0041 0042 #define SBC_ALLOCATION_SNR (1 << 1) 0043 #define SBC_ALLOCATION_LOUDNESS 1 0044 0045 #define MAX_BITPOOL 64 0046 #define MIN_BITPOOL 2 0047 0048 #define MPEG_CHANNEL_MODE_MONO (1 << 3) 0049 #define MPEG_CHANNEL_MODE_DUAL_CHANNEL (1 << 2) 0050 #define MPEG_CHANNEL_MODE_STEREO (1 << 1) 0051 #define MPEG_CHANNEL_MODE_JOINT_STEREO 1 0052 0053 #define MPEG_LAYER_MP1 (1 << 2) 0054 #define MPEG_LAYER_MP2 (1 << 1) 0055 #define MPEG_LAYER_MP3 1 0056 0057 #define MPEG_SAMPLING_FREQ_16000 (1 << 5) 0058 #define MPEG_SAMPLING_FREQ_22050 (1 << 4) 0059 #define MPEG_SAMPLING_FREQ_24000 (1 << 3) 0060 #define MPEG_SAMPLING_FREQ_32000 (1 << 2) 0061 #define MPEG_SAMPLING_FREQ_44100 (1 << 1) 0062 #define MPEG_SAMPLING_FREQ_48000 1 0063 0064 #define MPEG_BIT_RATE_VBR 0x8000 0065 #define MPEG_BIT_RATE_320000 0x4000 0066 #define MPEG_BIT_RATE_256000 0x2000 0067 #define MPEG_BIT_RATE_224000 0x1000 0068 #define MPEG_BIT_RATE_192000 0x0800 0069 #define MPEG_BIT_RATE_160000 0x0400 0070 #define MPEG_BIT_RATE_128000 0x0200 0071 #define MPEG_BIT_RATE_112000 0x0100 0072 #define MPEG_BIT_RATE_96000 0x0080 0073 #define MPEG_BIT_RATE_80000 0x0040 0074 #define MPEG_BIT_RATE_64000 0x0020 0075 #define MPEG_BIT_RATE_56000 0x0010 0076 #define MPEG_BIT_RATE_48000 0x0008 0077 #define MPEG_BIT_RATE_40000 0x0004 0078 #define MPEG_BIT_RATE_32000 0x0002 0079 #define MPEG_BIT_RATE_FREE 0x0001 0080 0081 #define AAC_OBJECT_TYPE_MPEG2_AAC_LC 0x80 0082 #define AAC_OBJECT_TYPE_MPEG4_AAC_LC 0x40 0083 #define AAC_OBJECT_TYPE_MPEG4_AAC_LTP 0x20 0084 #define AAC_OBJECT_TYPE_MPEG4_AAC_SCA 0x10 0085 0086 #define AAC_SAMPLING_FREQ_8000 0x0800 0087 #define AAC_SAMPLING_FREQ_11025 0x0400 0088 #define AAC_SAMPLING_FREQ_12000 0x0200 0089 #define AAC_SAMPLING_FREQ_16000 0x0100 0090 #define AAC_SAMPLING_FREQ_22050 0x0080 0091 #define AAC_SAMPLING_FREQ_24000 0x0040 0092 #define AAC_SAMPLING_FREQ_32000 0x0020 0093 #define AAC_SAMPLING_FREQ_44100 0x0010 0094 #define AAC_SAMPLING_FREQ_48000 0x0008 0095 #define AAC_SAMPLING_FREQ_64000 0x0004 0096 #define AAC_SAMPLING_FREQ_88200 0x0002 0097 #define AAC_SAMPLING_FREQ_96000 0x0001 0098 0099 #define AAC_CHANNELS_1 0x02 0100 #define AAC_CHANNELS_2 0x01 0101 0102 #define AAC_GET_BITRATE(a) ((a).bitrate1 << 16 | \ 0103 (a).bitrate2 << 8 | (a).bitrate3) 0104 #define AAC_GET_FREQUENCY(a) ((a).frequency1 << 4 | (a).frequency2) 0105 0106 #define AAC_SET_BITRATE(a, b) \ 0107 do { \ 0108 (a).bitrate1 = (b >> 16) & 0x7f; \ 0109 (a).bitrate2 = (b >> 8) & 0xff; \ 0110 (a).bitrate3 = b & 0xff; \ 0111 } while (0) 0112 #define AAC_SET_FREQUENCY(a, f) \ 0113 do { \ 0114 (a).frequency1 = (f >> 4) & 0xff; \ 0115 (a).frequency2 = f & 0x0f; \ 0116 } while (0) 0117 0118 #define AAC_INIT_BITRATE(b) \ 0119 .bitrate1 = (b >> 16) & 0x7f, \ 0120 .bitrate2 = (b >> 8) & 0xff, \ 0121 .bitrate3 = b & 0xff, 0122 #define AAC_INIT_FREQUENCY(f) \ 0123 .frequency1 = (f >> 4) & 0xff, \ 0124 .frequency2 = f & 0x0f, 0125 0126 #define APTX_VENDOR_ID 0x0000004f 0127 #define APTX_CODEC_ID 0x0001 0128 0129 #define APTX_CHANNEL_MODE_MONO 0x01 0130 #define APTX_CHANNEL_MODE_STEREO 0x02 0131 0132 #define APTX_SAMPLING_FREQ_16000 0x08 0133 #define APTX_SAMPLING_FREQ_32000 0x04 0134 #define APTX_SAMPLING_FREQ_44100 0x02 0135 #define APTX_SAMPLING_FREQ_48000 0x01 0136 0137 #define LDAC_VENDOR_ID 0x0000012d 0138 #define LDAC_CODEC_ID 0x00aa 0139 0140 typedef struct { 0141 uint32_t vendor_id; 0142 uint16_t codec_id; 0143 } __attribute__ ((packed)) a2dp_vendor_codec_t; 0144 0145 #if __BYTE_ORDER == __LITTLE_ENDIAN 0146 0147 typedef struct { 0148 uint8_t channel_mode:4; 0149 uint8_t frequency:4; 0150 uint8_t allocation_method:2; 0151 uint8_t subbands:2; 0152 uint8_t block_length:4; 0153 uint8_t min_bitpool; 0154 uint8_t max_bitpool; 0155 } __attribute__ ((packed)) a2dp_sbc_t; 0156 0157 typedef struct { 0158 uint8_t channel_mode:4; 0159 uint8_t crc:1; 0160 uint8_t layer:3; 0161 uint8_t frequency:6; 0162 uint8_t mpf:1; 0163 uint8_t rfa:1; 0164 uint16_t bitrate; 0165 } __attribute__ ((packed)) a2dp_mpeg_t; 0166 0167 typedef struct { 0168 uint8_t object_type; 0169 uint8_t frequency1; 0170 uint8_t rfa:2; 0171 uint8_t channels:2; 0172 uint8_t frequency2:4; 0173 uint8_t bitrate1:7; 0174 uint8_t vbr:1; 0175 uint8_t bitrate2; 0176 uint8_t bitrate3; 0177 } __attribute__ ((packed)) a2dp_aac_t; 0178 0179 typedef struct { 0180 a2dp_vendor_codec_t info; 0181 uint8_t channel_mode:4; 0182 uint8_t frequency:4; 0183 } __attribute__ ((packed)) a2dp_aptx_t; 0184 0185 typedef struct { 0186 a2dp_vendor_codec_t info; 0187 uint8_t unknown[2]; 0188 } __attribute__ ((packed)) a2dp_ldac_t; 0189 0190 #elif __BYTE_ORDER == __BIG_ENDIAN 0191 0192 typedef struct { 0193 uint8_t frequency:4; 0194 uint8_t channel_mode:4; 0195 uint8_t block_length:4; 0196 uint8_t subbands:2; 0197 uint8_t allocation_method:2; 0198 uint8_t min_bitpool; 0199 uint8_t max_bitpool; 0200 } __attribute__ ((packed)) a2dp_sbc_t; 0201 0202 typedef struct { 0203 uint8_t layer:3; 0204 uint8_t crc:1; 0205 uint8_t channel_mode:4; 0206 uint8_t rfa:1; 0207 uint8_t mpf:1; 0208 uint8_t frequency:6; 0209 uint16_t bitrate; 0210 } __attribute__ ((packed)) a2dp_mpeg_t; 0211 0212 typedef struct { 0213 uint8_t object_type; 0214 uint8_t frequency1; 0215 uint8_t frequency2:4; 0216 uint8_t channels:2; 0217 uint8_t rfa:2; 0218 uint8_t vbr:1; 0219 uint8_t bitrate1:7; 0220 uint8_t bitrate2; 0221 uint8_t bitrate3; 0222 } __attribute__ ((packed)) a2dp_aac_t; 0223 0224 typedef struct { 0225 a2dp_vendor_codec_t info; 0226 uint8_t frequency:4; 0227 uint8_t channel_mode:4; 0228 } __attribute__ ((packed)) a2dp_aptx_t; 0229 0230 typedef struct { 0231 a2dp_vendor_codec_t info; 0232 uint8_t unknown[2]; 0233 } __attribute__ ((packed)) a2dp_ldac_t; 0234 0235 #else 0236 #error "Unknown byte order" 0237 #endif 0238 0239 #ifdef __cplusplus 0240 extern "C" { 0241 #endif 0242 0243 #include "bluezqt_export.h" 0244 0245 BLUEZQT_EXPORT extern const a2dp_sbc_t sbcCapabilities; 0246 BLUEZQT_EXPORT extern const a2dp_aac_t aacCapabilities; 0247 0248 #ifdef __cplusplus 0249 } 0250 #endif 0251 0252 #endif