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C++

/**
*
* \section COPYRIGHT
*
* Copyright 2013-2021 Software Radio Systems Limited
*
* By using this file, you agree to the terms and conditions set
* forth in the LICENSE file which can be found at the top level of
* the distribution.
*
*/
#ifndef SRSUE_MUX_NR_H
#define SRSUE_MUX_NR_H
#include "mac_nr_interfaces.h"
#include "proc_bsr_nr.h"
#include "srsran/common/byte_buffer.h"
#include "srsran/common/common.h"
#include "srsran/mac/mac_sch_pdu_nr.h"
#include "srsran/srslog/srslog.h"
#include "srsran/srsran.h"
#include "srsue/hdr/stack/mac_common/mux_base.h"
#include <mutex>
namespace srsue {
class mux_nr final : mux_base, public mux_interface_bsr_nr
{
public:
explicit mux_nr(mac_interface_mux_nr& mac_, srslog::basic_logger& logger);
~mux_nr(){};
void reset();
int32_t init(rlc_interface_mac* rlc_);
void msg3_flush();
void msg3_prepare();
void msg3_transmitted();
bool msg3_is_transmitted();
bool msg3_is_pending();
bool msg3_is_empty();
// MAC interface
int setup_lcid(const srsran::logical_channel_config_t& config);
// Interface of UL HARQ
srsran::unique_byte_buffer_t get_pdu(uint32_t max_pdu_len);
// Interface for BSR procedure
void generate_bsr_mac_ce(const bsr_interface_mux_nr::bsr_format_nr_t& format);
private:
// internal helper methods
// ctor configured members
mac_interface_mux_nr& mac;
rlc_interface_mac* rlc = nullptr;
srslog::basic_logger& logger;
// Msg3 related
srsran::unique_byte_buffer_t msg3_buff = nullptr;
typedef enum { none, pending, transmitted } msg3_state_t;
msg3_state_t msg3_state = none;
static constexpr uint32_t MIN_RLC_PDU_LEN =
5; ///< minimum bytes that need to be available in a MAC PDU for attempting to add another RLC SDU
srsran::unique_byte_buffer_t rlc_buff = nullptr;
srsran::mac_sch_pdu_nr tx_pdu;
enum { no_bsr, sbsr_ce, lbsr_ce } add_bsr_ce = no_bsr; /// BSR procedure requests MUX to add a BSR CE
// Mutex for exclusive access
std::mutex mutex;
};
} // namespace srsue
#endif // SRSUE_MUX_NR_H