sbc.h

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/*
 * Copyright 2024 - 2025 NXP
 *
 * SPDX-License-Identifier: Apache-2.0
 */
 
#ifndef ZEPHYR_INCLUDE_LIB_SBC_H_
#define ZEPHYR_INCLUDE_LIB_SBC_H_
 
#include <stdint.h>
#include <stdbool.h>
#include <string.h>
#include <zephyr/toolchain.h>
#include "sbc_encoder.h"
#include "oi_codec_sbc.h"
#include "oi_status.h"

enum __packed sbc_ch_mode {
        SBC_CH_MODE_MONO,
        SBC_CH_MODE_DUAL_CHANNEL,
        SBC_CH_MODE_STEREO,
        SBC_CH_MODE_JOINT_STEREO,
};

enum __packed sbc_alloc_mthd {
        SBC_ALLOC_MTHD_LOUDNESS,
        SBC_ALLOC_MTHD_SNR,
};

struct sbc_encoder {
        SBC_ENC_PARAMS sbc_encoder_params;
};

struct sbc_encoder_init_param {
        uint32_t bit_rate;
        uint32_t samp_freq;
        uint8_t blk_len;
        uint8_t subband;
        enum sbc_alloc_mthd alloc_mthd;
        enum sbc_ch_mode ch_mode;
        uint8_t ch_num;
        uint8_t min_bitpool;
        uint8_t max_bitpool;
};

int sbc_setup_encoder(struct sbc_encoder *encoder, struct sbc_encoder_init_param *param);

uint32_t sbc_encode(struct sbc_encoder *encoder, const void *in_data, void *out_data);

int sbc_frame_samples(struct sbc_encoder *encoder);

int sbc_frame_bytes(struct sbc_encoder *encoder);

int sbc_frame_encoded_bytes(struct sbc_encoder *encoder);

struct sbc_decoder {
        OI_CODEC_SBC_DECODER_CONTEXT context;
        uint32_t context_data[CODEC_DATA_WORDS(2, SBC_CODEC_FAST_FILTER_BUFFERS)];
};

int sbc_setup_decoder(struct sbc_decoder *decoder);

int sbc_decode(struct sbc_decoder *decoder, const void **in_data, uint32_t *in_size,
                void *out_data, uint32_t *out_size);
#endif /* ZEPHYR_INCLUDE_LIB_SBC_H_ */