/* SPDX-License-Identifier: LGPL-2.1-or-later */ /* * * BlueZ - Bluetooth protocol stack for Linux * * Copyright (C) 2006-2010 Nokia Corporation * Copyright (C) 2004-2010 Marcel Holtmann * Copyright (C) 2018 Pali Rohár * * */ #include #include #define A2DP_CODEC_SBC 0x00 #define A2DP_CODEC_MPEG12 0x01 #define A2DP_CODEC_MPEG24 0x02 #define A2DP_CODEC_ATRAC 0x04 #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 SBC_MIN_BITPOOL 2 #define SBC_MAX_BITPOOL 250 /* Other settings: * Block length = 16 * Allocation method = Loudness * Subbands = 8 */ #define SBC_BITPOOL_MQ_MONO_44100 19 #define SBC_BITPOOL_MQ_MONO_48000 18 #define SBC_BITPOOL_MQ_JOINT_STEREO_44100 35 #define SBC_BITPOOL_MQ_JOINT_STEREO_48000 33 #define SBC_BITPOOL_HQ_MONO_44100 31 #define SBC_BITPOOL_HQ_MONO_48000 29 #define SBC_BITPOOL_HQ_JOINT_STEREO_44100 53 #define SBC_BITPOOL_HQ_JOINT_STEREO_48000 51 #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_INDEX_0 (1 << 0) #define MPEG_BIT_RATE_INDEX_1 (1 << 1) #define MPEG_BIT_RATE_INDEX_2 (1 << 2) #define MPEG_BIT_RATE_INDEX_3 (1 << 3) #define MPEG_BIT_RATE_INDEX_4 (1 << 4) #define MPEG_BIT_RATE_INDEX_5 (1 << 5) #define MPEG_BIT_RATE_INDEX_6 (1 << 6) #define MPEG_BIT_RATE_INDEX_7 (1 << 7) #define MPEG_BIT_RATE_INDEX_8 (1 << 8) #define MPEG_BIT_RATE_INDEX_9 (1 << 9) #define MPEG_BIT_RATE_INDEX_10 (1 << 10) #define MPEG_BIT_RATE_INDEX_11 (1 << 11) #define MPEG_BIT_RATE_INDEX_12 (1 << 12) #define MPEG_BIT_RATE_INDEX_13 (1 << 13) #define MPEG_BIT_RATE_INDEX_14 (1 << 14) #define MPEG_MP1_BIT_RATE_32000 MPEG_BIT_RATE_INDEX_1 #define MPEG_MP1_BIT_RATE_64000 MPEG_BIT_RATE_INDEX_2 #define MPEG_MP1_BIT_RATE_96000 MPEG_BIT_RATE_INDEX_3 #define MPEG_MP1_BIT_RATE_128000 MPEG_BIT_RATE_INDEX_4 #define MPEG_MP1_BIT_RATE_160000 MPEG_BIT_RATE_INDEX_5 #define MPEG_MP1_BIT_RATE_192000 MPEG_BIT_RATE_INDEX_6 #define MPEG_MP1_BIT_RATE_224000 MPEG_BIT_RATE_INDEX_7 #define MPEG_MP1_BIT_RATE_256000 MPEG_BIT_RATE_INDEX_8 #define MPEG_MP1_BIT_RATE_288000 MPEG_BIT_RATE_INDEX_9 #define MPEG_MP1_BIT_RATE_320000 MPEG_BIT_RATE_INDEX_10 #define MPEG_MP1_BIT_RATE_352000 MPEG_BIT_RATE_INDEX_11 #define MPEG_MP1_BIT_RATE_384000 MPEG_BIT_RATE_INDEX_12 #define MPEG_MP1_BIT_RATE_416000 MPEG_BIT_RATE_INDEX_13 #define MPEG_MP1_BIT_RATE_448000 MPEG_BIT_RATE_INDEX_14 #define MPEG_MP2_BIT_RATE_32000 MPEG_BIT_RATE_INDEX_1 #define MPEG_MP2_BIT_RATE_48000 MPEG_BIT_RATE_INDEX_2 #define MPEG_MP2_BIT_RATE_56000 MPEG_BIT_RATE_INDEX_3 #define MPEG_MP2_BIT_RATE_64000 MPEG_BIT_RATE_INDEX_4 #define MPEG_MP2_BIT_RATE_80000 MPEG_BIT_RATE_INDEX_5 #define MPEG_MP2_BIT_RATE_96000 MPEG_BIT_RATE_INDEX_6 #define MPEG_MP2_BIT_RATE_112000 MPEG_BIT_RATE_INDEX_7 #define MPEG_MP2_BIT_RATE_128000 MPEG_BIT_RATE_INDEX_8 #define MPEG_MP2_BIT_RATE_160000 MPEG_BIT_RATE_INDEX_9 #define MPEG_MP2_BIT_RATE_192000 MPEG_BIT_RATE_INDEX_10 #define MPEG_MP2_BIT_RATE_224000 MPEG_BIT_RATE_INDEX_11 #define MPEG_MP2_BIT_RATE_256000 MPEG_BIT_RATE_INDEX_12 #define MPEG_MP2_BIT_RATE_320000 MPEG_BIT_RATE_INDEX_13 #define MPEG_MP2_BIT_RATE_384000 MPEG_BIT_RATE_INDEX_14 #define MPEG_MP3_BIT_RATE_32000 MPEG_BIT_RATE_INDEX_1 #define MPEG_MP3_BIT_RATE_40000 MPEG_BIT_RATE_INDEX_2 #define MPEG_MP3_BIT_RATE_48000 MPEG_BIT_RATE_INDEX_3 #define MPEG_MP3_BIT_RATE_56000 MPEG_BIT_RATE_INDEX_4 #define MPEG_MP3_BIT_RATE_64000 MPEG_BIT_RATE_INDEX_5 #define MPEG_MP3_BIT_RATE_80000 MPEG_BIT_RATE_INDEX_6 #define MPEG_MP3_BIT_RATE_96000 MPEG_BIT_RATE_INDEX_7 #define MPEG_MP3_BIT_RATE_112000 MPEG_BIT_RATE_INDEX_8 #define MPEG_MP3_BIT_RATE_128000 MPEG_BIT_RATE_INDEX_9 #define MPEG_MP3_BIT_RATE_160000 MPEG_BIT_RATE_INDEX_10 #define MPEG_MP3_BIT_RATE_192000 MPEG_BIT_RATE_INDEX_11 #define MPEG_MP3_BIT_RATE_224000 MPEG_BIT_RATE_INDEX_12 #define MPEG_MP3_BIT_RATE_256000 MPEG_BIT_RATE_INDEX_13 #define MPEG_MP3_BIT_RATE_320000 MPEG_BIT_RATE_INDEX_14 #define MPEG_BIT_RATE_FREE MPEG_BIT_RATE_INDEX_0 #define MPEG_GET_BITRATE(a) ((uint16_t)(a).bitrate1 << 8 | (a).bitrate2) #define MPEG_SET_BITRATE(a, b) \ do { \ (a).bitrate1 = ((b) >> 8) & 0x7f; \ (a).bitrate2 = (b) & 0xff; \ } while (0) #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 FASTSTREAM_VENDOR_ID 0x0000000a #define FASTSTREAM_CODEC_ID 0x0001 #define FASTSTREAM_DIRECTION_SINK 0x1 #define FASTSTREAM_DIRECTION_SOURCE 0x2 #define FASTSTREAM_SINK_SAMPLING_FREQ_44100 0x2 #define FASTSTREAM_SINK_SAMPLING_FREQ_48000 0x1 #define FASTSTREAM_SOURCE_SAMPLING_FREQ_16000 0x2 #define APTX_LL_VENDOR_ID 0x0000000a #define APTX_LL_CODEC_ID 0x0002 /* Default parameters for aptX Low Latency encoder */ /* Target codec buffer level = 180 */ #define APTX_LL_TARGET_LEVEL2 0xb4 #define APTX_LL_TARGET_LEVEL1 0x00 /* Initial codec buffer level = 360 */ #define APTX_LL_INITIAL_LEVEL2 0x68 #define APTX_LL_INITIAL_LEVEL1 0x01 /* SRA max rate 0.005 * 10000 = 50 */ #define APTX_LL_SRA_MAX_RATE 0x32 /* SRA averaging time = 1s */ #define APTX_LL_SRA_AVG_TIME 0x01 /* Good working codec buffer level = 180 */ #define APTX_LL_GOOD_WORKING_LEVEL2 0xB4 #define APTX_LL_GOOD_WORKING_LEVEL1 0x00 #define APTX_HD_VENDOR_ID 0x000000D7 #define APTX_HD_CODEC_ID 0x0024 #define LDAC_VENDOR_ID 0x0000012d #define LDAC_CODEC_ID 0x00aa #define LDAC_SAMPLING_FREQ_44100 0x20 #define LDAC_SAMPLING_FREQ_48000 0x10 #define LDAC_SAMPLING_FREQ_88200 0x08 #define LDAC_SAMPLING_FREQ_96000 0x04 #define LDAC_SAMPLING_FREQ_176400 0x02 #define LDAC_SAMPLING_FREQ_192000 0x01 #define LDAC_CHANNEL_MODE_MONO 0x04 #define LDAC_CHANNEL_MODE_DUAL 0x02 #define LDAC_CHANNEL_MODE_STEREO 0x01 typedef struct { uint8_t vendor_id4; uint8_t vendor_id3; uint8_t vendor_id2; uint8_t vendor_id1; uint8_t codec_id2; uint8_t codec_id1; } __attribute__ ((packed)) a2dp_vendor_codec_t; #define A2DP_GET_VENDOR_ID(a) ( \ (((uint32_t)(a).vendor_id4) << 0) | \ (((uint32_t)(a).vendor_id3) << 8) | \ (((uint32_t)(a).vendor_id2) << 16) | \ (((uint32_t)(a).vendor_id1) << 24) \ ) #define A2DP_GET_CODEC_ID(a) ((a).codec_id2 | (((uint16_t)(a).codec_id1) << 8)) #define A2DP_SET_VENDOR_ID_CODEC_ID(v, c) ((a2dp_vendor_codec_t){ \ .vendor_id4 = (((v) >> 0) & 0xff), \ .vendor_id3 = (((v) >> 8) & 0xff), \ .vendor_id2 = (((v) >> 16) & 0xff), \ .vendor_id1 = (((v) >> 24) & 0xff), \ .codec_id2 = (((c) >> 0) & 0xff), \ .codec_id1 = (((c) >> 8) & 0xff), \ }) typedef struct { uint8_t reserved; uint8_t target_level2; uint8_t target_level1; uint8_t initial_level2; uint8_t initial_level1; uint8_t sra_max_rate; uint8_t sra_avg_time; uint8_t good_working_level2; uint8_t good_working_level1; } __attribute__ ((packed)) a2dp_aptx_ll_new_caps_t; typedef struct { a2dp_vendor_codec_t info; uint8_t frequency; uint8_t channel_mode; } __attribute__ ((packed)) a2dp_ldac_t; #if defined(__BYTE_ORDER) && defined(__LITTLE_ENDIAN) && \ __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; uint8_t bitrate1:7; uint8_t vbr:1; uint8_t bitrate2; } __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 direction; uint8_t sink_frequency:4; uint8_t source_frequency:4; } __attribute__ ((packed)) a2dp_faststream_t; typedef struct { a2dp_aptx_t aptx; uint8_t bidirect_link:1; uint8_t has_new_caps:1; uint8_t reserved:6; a2dp_aptx_ll_new_caps_t new_caps[0]; } __attribute__ ((packed)) a2dp_aptx_ll_t; #elif defined(__BYTE_ORDER) && defined(__BIG_ENDIAN) && \ __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; uint8_t vbr:1; uint8_t bitrate1:7; uint8_t bitrate2; } __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; typedef struct { a2dp_vendor_codec_t info; uint8_t direction; uint8_t source_frequency:4; uint8_t sink_frequency:4; } __attribute__ ((packed)) a2dp_faststream_t; typedef struct { a2dp_aptx_t aptx; uint8_t reserved:6; uint8_t has_new_caps:1; uint8_t bidirect_link:1; a2dp_aptx_ll_new_caps_t new_caps[0]; } __attribute__ ((packed)) a2dp_aptx_ll_t; #else #error "Unknown byte order" #endif typedef struct { a2dp_aptx_t aptx; uint8_t reserved0; uint8_t reserved1; uint8_t reserved2; uint8_t reserved3; } __attribute__ ((packed)) a2dp_aptx_hd_t;