//
// Copyright 2010-2011 Ettus Research LLC
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU 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 General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program.  If not, see <http://www.gnu.org/licenses/>.
//

#ifndef INCLUDED_USRP2_IMPL_HPP
#define INCLUDED_USRP2_IMPL_HPP

#include "usrp2_iface.hpp"
#include "clock_ctrl.hpp"
#include "codec_ctrl.hpp"
#include "rx_frontend_core_200.hpp"
#include "tx_frontend_core_200.hpp"
#include "rx_dsp_core_200.hpp"
#include "tx_dsp_core_200.hpp"
#include "time64_core_200.hpp"
#include <uhd/property_tree.hpp>
#include <uhd/usrp/gps_ctrl.hpp>
#include <uhd/device.hpp>
#include <uhd/utils/pimpl.hpp>
#include <uhd/types/dict.hpp>
#include <uhd/types/otw_type.hpp>
#include <uhd/types/stream_cmd.hpp>
#include <uhd/types/clock_config.hpp>
#include <uhd/usrp/dboard_eeprom.hpp>
#include <boost/shared_ptr.hpp>
#include <boost/function.hpp>
#include <uhd/transport/vrt_if_packet.hpp>
#include <uhd/transport/udp_simple.hpp>
#include <uhd/transport/udp_zero_copy.hpp>
#include <uhd/usrp/dboard_manager.hpp>
#include <uhd/usrp/subdev_spec.hpp>

static const double USRP2_LINK_RATE_BPS = 1000e6/8;
static const double mimo_clock_delay_usrp2_rev4 = 4.18e-9;
static const double mimo_clock_delay_usrp_n2xx = 3.55e-9;
static const size_t mimo_clock_sync_delay_cycles = 138;
static const size_t USRP2_SRAM_BYTES = size_t(1 << 20);
static const boost::uint32_t USRP2_TX_ASYNC_SID = 2;
static const boost::uint32_t USRP2_RX_SID_BASE = 3;

/*!
 * Make a usrp2 dboard interface.
 * \param iface the usrp2 interface object
 * \param clk_ctrl the clock control object
 * \return a sptr to a new dboard interface
 */
uhd::usrp::dboard_iface::sptr make_usrp2_dboard_iface(
    usrp2_iface::sptr iface,
    usrp2_clock_ctrl::sptr clk_ctrl
);

/*!
 * USRP2 implementation guts:
 * The implementation details are encapsulated here.
 * Handles device properties and streaming...
 */
class usrp2_impl : public uhd::device{
public:
    usrp2_impl(const uhd::device_addr_t &);
    ~usrp2_impl(void);

    //the io interface
    size_t send(
        const send_buffs_type &, size_t,
        const uhd::tx_metadata_t &, const uhd::io_type_t &,
        uhd::device::send_mode_t, double
    );
    size_t recv(
        const recv_buffs_type &, size_t,
        uhd::rx_metadata_t &, const uhd::io_type_t &,
        uhd::device::recv_mode_t, double
    );
    size_t get_max_send_samps_per_packet(void) const;
    size_t get_max_recv_samps_per_packet(void) const;
    bool recv_async_msg(uhd::async_metadata_t &, double);

private:
    uhd::property_tree::sptr _tree;
    struct mb_container_type{
        usrp2_iface::sptr iface;
        usrp2_clock_ctrl::sptr clock;
        usrp2_codec_ctrl::sptr codec;
        uhd::gps_ctrl::sptr gps;
        rx_frontend_core_200::sptr rx_fe;
        tx_frontend_core_200::sptr tx_fe;
        std::vector<rx_dsp_core_200::sptr> rx_dsps;
        tx_dsp_core_200::sptr tx_dsp;
        time64_core_200::sptr time64;
        std::vector<uhd::transport::zero_copy_if::sptr> rx_dsp_xports;
        uhd::transport::zero_copy_if::sptr tx_dsp_xport;
        uhd::usrp::dboard_manager::sptr dboard_manager;
        uhd::usrp::dboard_iface::sptr dboard_iface;
        size_t rx_chan_occ, tx_chan_occ;
        mb_container_type(void): rx_chan_occ(0), tx_chan_occ(0){}
    };
    uhd::dict<std::string, mb_container_type> _mbc;

    void set_mb_eeprom(const std::string &, const uhd::usrp::mboard_eeprom_t &);
    void set_db_eeprom(const std::string &, const std::string &, const uhd::usrp::dboard_eeprom_t &);

    uhd::sensor_value_t get_mimo_locked(const std::string &);
    uhd::sensor_value_t get_ref_locked(const std::string &);

    //device properties interface
    uhd::property_tree::sptr get_tree(void) const{
        return _tree;
    }

    //io impl methods and members
    uhd::otw_type_t _rx_otw_type, _tx_otw_type;
    UHD_PIMPL_DECL(io_impl) _io_impl;
    void io_init(void);
    void update_tick_rate(const double rate);
    void update_rx_samp_rate(const double rate);
    void update_tx_samp_rate(const double rate);
    //update spec methods are coercers until we only accept db_name == A
    uhd::usrp::subdev_spec_t update_rx_subdev_spec(const std::string &, const uhd::usrp::subdev_spec_t &);
    uhd::usrp::subdev_spec_t update_tx_subdev_spec(const std::string &, const uhd::usrp::subdev_spec_t &);
    double set_tx_dsp_freq(const std::string &, const double);
    uhd::meta_range_t get_tx_dsp_freq_range(const std::string &);
    void update_clock_source(const std::string &, const std::string &);
};

#endif /* INCLUDED_USRP2_IMPL_HPP */