1 /** @file 2 * @brief Advance Audio Distribution Profile - SBC Codec header. 3 */ 4 /* 5 * SPDX-License-Identifier: Apache-2.0 6 * Copyright (c) 2015-2016 Intel Corporation 7 * 8 * Licensed under the Apache License, Version 2.0 (the "License"); 9 * you may not use this file except in compliance with the License. 10 * You may obtain a copy of the License at 11 * 12 * http://www.apache.org/licenses/LICENSE-2.0 13 * 14 * Unless required by applicable law or agreed to in writing, software 15 * distributed under the License is distributed on an "AS IS" BASIS, 16 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 17 * See the License for the specific language governing permissions and 18 * limitations under the License. 19 */ 20 #ifndef ZEPHYR_INCLUDE_BLUETOOTH_A2DP_CODEC_H_ 21 #define ZEPHYR_INCLUDE_BLUETOOTH_A2DP_CODEC_H_ 22 23 #include <stdint.h> 24 25 #ifdef __cplusplus 26 extern "C" { 27 #endif 28 29 /* Sampling Frequency */ 30 #define A2DP_SBC_SAMP_FREQ_16000 BIT(7) 31 #define A2DP_SBC_SAMP_FREQ_32000 BIT(6) 32 #define A2DP_SBC_SAMP_FREQ_44100 BIT(5) 33 #define A2DP_SBC_SAMP_FREQ_48000 BIT(4) 34 35 /* Channel Mode */ 36 #define A2DP_SBC_CH_MODE_MONO BIT(3) 37 #define A2DP_SBC_CH_MODE_DUAL BIT(2) 38 #define A2DP_SBC_CH_MODE_STREO BIT(1) 39 #define A2DP_SBC_CH_MODE_JOINT BIT(0) 40 41 /* Block Length */ 42 #define A2DP_SBC_BLK_LEN_4 BIT(7) 43 #define A2DP_SBC_BLK_LEN_8 BIT(6) 44 #define A2DP_SBC_BLK_LEN_12 BIT(5) 45 #define A2DP_SBC_BLK_LEN_16 BIT(4) 46 47 /* Subbands */ 48 #define A2DP_SBC_SUBBAND_4 BIT(3) 49 #define A2DP_SBC_SUBBAND_8 BIT(2) 50 51 /* Allocation Method */ 52 #define A2DP_SBC_ALLOC_MTHD_SNR BIT(1) 53 #define A2DP_SBC_ALLOC_MTHD_LOUDNESS BIT(0) 54 55 #define BT_A2DP_SBC_SAMP_FREQ(preset) ((preset->config[0] >> 4) & 0x0f) 56 #define BT_A2DP_SBC_CHAN_MODE(preset) ((preset->config[0]) & 0x0f) 57 #define BT_A2DP_SBC_BLK_LEN(preset) ((preset->config[1] >> 4) & 0x0f) 58 #define BT_A2DP_SBC_SUB_BAND(preset) ((preset->config[1] >> 2) & 0x03) 59 #define BT_A2DP_SBC_ALLOC_MTHD(preset) ((preset->config[1]) & 0x03) 60 61 /** @brief SBC Codec */ 62 struct bt_a2dp_codec_sbc_params { 63 /** First two octets of configuration */ 64 uint8_t config[2]; 65 /** Minimum Bitpool Value */ 66 uint8_t min_bitpool; 67 /** Maximum Bitpool Value */ 68 uint8_t max_bitpool; 69 } __packed; 70 71 #ifdef __cplusplus 72 } 73 #endif 74 75 #endif /* ZEPHYR_INCLUDE_BLUETOOTH_A2DP_CODEC_H_ */ 76
