74 lines
2.1 KiB
C
74 lines
2.1 KiB
C
/** @file
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* @brief Advance Audio Distribution Profile - SBC Codec header.
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*/
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/*
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* Copyright (c) 2015-2016 Intel Corporation
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef __BT_A2DP_SBC_H
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#define __BT_A2DP_SBC_H
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#ifdef __cplusplus
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extern "C" {
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#endif
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/* Sampling Frequency */
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#define A2DP_SBC_SAMP_FREQ_16000 BIT(7)
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#define A2DP_SBC_SAMP_FREQ_32000 BIT(6)
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#define A2DP_SBC_SAMP_FREQ_44100 BIT(5)
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#define A2DP_SBC_SAMP_FREQ_48000 BIT(4)
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/* Channel Mode */
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#define A2DP_SBC_CH_MODE_MONO BIT(3)
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#define A2DP_SBC_CH_MODE_DUAL BIT(2)
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#define A2DP_SBC_CH_MODE_STREO BIT(1)
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#define A2DP_SBC_CH_MODE_JOINT BIT(0)
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/* Block Length */
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#define A2DP_SBC_BLK_LEN_4 BIT(7)
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#define A2DP_SBC_BLK_LEN_8 BIT(6)
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#define A2DP_SBC_BLK_LEN_12 BIT(5)
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#define A2DP_SBC_BLK_LEN_16 BIT(4)
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/* Subbands */
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#define A2DP_SBC_SUBBAND_4 BIT(3)
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#define A2DP_SBC_SUBBAND_8 BIT(2)
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/* Allocation Method */
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#define A2DP_SBC_ALLOC_MTHD_SNR BIT(1)
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#define A2DP_SBC_ALLOC_MTHD_LOUDNESS BIT(0)
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#define BT_A2DP_SBC_SAMP_FREQ(preset) ((preset->config[0] >> 4) & 0x0f)
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#define BT_A2DP_SBC_CHAN_MODE(preset) ((preset->config[0]) & 0x0f)
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#define BT_A2DP_SBC_BLK_LEN(preset) ((preset->config[1] >> 4) & 0x0f)
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#define BT_A2DP_SBC_SUB_BAND(preset) ((preset->config[1] >> 2) & 0x03)
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#define BT_A2DP_SBC_ALLOC_MTHD(preset) ((preset->config[1]) & 0x03)
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/** @brief SBC Codec */
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struct bt_a2dp_codec_sbc_params {
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/** First two octets of configuration */
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u8_t config[2];
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/** Minimum Bitpool Value */
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u8_t min_bitpool;
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/** Maximum Bitpool Value */
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u8_t max_bitpool;
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} __packed;
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#ifdef __cplusplus
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}
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#endif
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#endif /* __BT_A2DP_SBC_H */
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