/* * * BlueZ - Bluetooth protocol stack for Linux * * Copyright (C) 2006-2010 Nokia Corporation * Copyright (C) 2004-2010 Marcel Holtmann * * * 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; typedef struct { a2dp_vendor_codec_t info; uint8_t unknown[2]; } __attribute__ ((packed)) a2dp_ldac_t; #else #error "Unknown byte order" #endif