Rrc.h

// OBECA - Open Broadcast Edge Cache Appliance
// Receive Process
//
// Copyright (C) 2021 Klaus Kühnhammer (Österreichische Rundfunksender GmbH & Co KG)
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
// 
// This program 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 Affero General Public License for more details.
// 
// You should have received a copy of the GNU Affero General Public License
// along with this program.  If not, see <http://www.gnu.org/licenses/>.
//
 
#pragma once
#include <string>
#include <libconfig.h++>
#include "srslte/srslte.h"
#include "srslte/upper/rlc.h"
#include "srslte/asn1/rrc_asn1.h"
 
#include "Phy.h"
 
class Rrc : public srsue::rrc_interface_rlc, public srsue::rrc_interface_pdcp {
 public:
    Rrc(const libconfig::Config& cfg, Phy& phy, srslte::rlc& rlc)
      : _cfg(cfg)
      , _rlc(rlc)
      , _phy(phy) {}
    virtual ~Rrc() = default;
 
    void max_retx_attempted() override {}; // Unused
 
    typedef enum {
      ACQUIRE_SIB,
      ACQUIRE_AREA_CONFIG,
      STREAMING
    } rrc_state_t;
    rrc_state_t state() { return _state; }
    void reset() { _state = ACQUIRE_SIB;  }
 
 
    void write_pdu_mch(uint32_t lcid, srslte::unique_byte_buffer_t pdu) override;
 
    void write_pdu_bcch_dlsch(srslte::unique_byte_buffer_t pdu) override;
    void write_pdu(uint32_t lcid, srslte::unique_byte_buffer_t pdu) override {}; // Unused
    void write_pdu_bcch_bch(srslte::unique_byte_buffer_t pdu) override {}; // Unused
    void write_pdu_pcch(srslte::unique_byte_buffer_t pdu) override {}; // Unused
    std::string get_rb_name(uint32_t lcid) override { return "RB" + std::to_string(lcid); };
 
 private:
    void handle_sib1(const asn1::rrc::sib_type1_mbms_r14_s& sib1);
    rrc_state_t _state = ACQUIRE_SIB;
 
    const libconfig::Config& _cfg;
    srslte::rlc& _rlc;
    Phy& _phy;
};