/*
 * Copyright 2010-2011 Free Software Foundation, Inc.
 * 
 * This file is part of GNU Radio
 * 
 * GNU Radio 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, or (at your option)
 * any later version.
 * 
 * GNU Radio 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 GNU Radio; see the file COPYING.  If not, write to
 * the Free Software Foundation, Inc., 51 Franklin Street,
 * Boston, MA 02110-1301, USA.
 */

#ifndef INCLUDED_GR_UHD_USRP_SOURCE_H
#define INCLUDED_GR_UHD_USRP_SOURCE_H

#include <gr_uhd_api.h>
#include <gr_sync_block.h>
#include <uhd/usrp/multi_usrp.hpp>

#ifndef INCLUDED_UHD_STREAM_HPP
namespace uhd{
    struct GR_UHD_API stream_args_t{
        stream_args_t(
            const std::string &cpu = "",
            const std::string &otw = ""
        ){
            cpu_format = cpu;
            otw_format = otw;
        }
        std::string cpu_format;
        std::string otw_format;
        device_addr_t args;
        std::vector<size_t> channels;
    };
}
#  define INCLUDED_UHD_STREAM_HPP
#else
#  define GR_UHD_USE_STREAM_API
#endif

class uhd_usrp_source;

/*!
 * \brief Make a new USRP source block.
 * \ingroup uhd_blk
 *
 * The USRP source block receives samples and writes to a stream.
 * The source block also provides API calls for receiver settings.
 *
 * RX Stream tagging:
 *
 * The following tag keys will be produced by the work function:
 *  - pmt::pmt_string_to_symbol("rx_time")
 *
 * The timstamp tag value is a pmt tuple of the following:
 * (uint64 seconds, and double fractional seconds).
 * A timestamp tag is produced at start() and after overflows.
 *
 * See the UHD manual for more detailed documentation:
 * http://code.ettus.com/redmine/ettus/projects/uhd/wiki
 *
 * \param device_addr the address to identify the hardware
 * \param io_type the desired output data type
 * \param num_channels number of stream from the device
 * \return a new USRP source block object
 */
GR_UHD_API boost::shared_ptr<uhd_usrp_source> uhd_make_usrp_source(
    const uhd::device_addr_t &device_addr,
    const uhd::io_type_t &io_type,
    size_t num_channels
);

/*!
 * \brief Make a new USRP source block.
 *
 * The USRP source block receives samples and writes to a stream.
 * The source block also provides API calls for receiver settings.
 *
 * RX Stream tagging:
 *
 * The following tag keys will be produced by the work function:
 *  - pmt::pmt_string_to_symbol("rx_time")
 *
 * The timstamp tag value is a pmt tuple of the following:
 * (uint64 seconds, and double fractional seconds).
 * A timestamp tag is produced at start() and after overflows.
 *
 * See the UHD manual for more detailed documentation:
 * http://code.ettus.com/redmine/ettus/projects/uhd/wiki
 *
 * \param device_addr the address to identify the hardware
 * \param stream_args the IO format and channel specification
 * \return a new USRP source block object
 */
GR_UHD_API boost::shared_ptr<uhd_usrp_source> uhd_make_usrp_source(
    const uhd::device_addr_t &device_addr,
    const uhd::stream_args_t &stream_args
);

class GR_UHD_API uhd_usrp_source : virtual public gr_sync_block{
public:

    /*!
     * Set the subdevice specification.
     * \param spec the subdev spec markup string
     * \param mboard the motherboard index 0 to M-1
     */
    virtual void set_subdev_spec(const std::string &spec, size_t mboard = 0) = 0;

    /*!
     * Set the sample rate for the usrp device.
     * \param rate a new rate in Sps
     */
    virtual void set_samp_rate(double rate) = 0;

    /*!
     * Get the sample rate for the usrp device.
     * This is the actual sample rate and may differ from the rate set.
     * \return the actual rate in Sps
     */
    virtual double get_samp_rate(void) = 0;

    /*!
     * Get the possible sample rates for the usrp device.
     * \return a range of rates in Sps
     */
    virtual uhd::meta_range_t get_samp_rates(void) = 0;

    /*!
     * Tune the usrp device to the desired center frequency.
     * \param tune_request the tune request instructions
     * \param chan the channel index 0 to N-1
     * \return a tune result with the actual frequencies
     */
    virtual uhd::tune_result_t set_center_freq(
        const uhd::tune_request_t tune_request, size_t chan = 0
    ) = 0;

    /*!
     * Tune the usrp device to the desired center frequency.
     * This is a wrapper around set center freq so that in this case,
     * the user can pass a single frequency in the call through swig.
     * \param freq the desired frequency in Hz
     * \param chan the channel index 0 to N-1
     * \return a tune result with the actual frequencies
     */
    uhd::tune_result_t set_center_freq(double freq, size_t chan = 0){
        return set_center_freq(uhd::tune_request_t(freq), chan);
    }

    /*!
     * Get the center frequency.
     * \param chan the channel index 0 to N-1
     * \return the frequency in Hz
     */
    virtual double get_center_freq(size_t chan = 0) = 0;

    /*!
     * Get the tunable frequency range.
     * \param chan the channel index 0 to N-1
     * \return the frequency range in Hz
     */
    virtual uhd::freq_range_t get_freq_range(size_t chan = 0) = 0;

    /*!
     * Set the gain for the dboard.
     * \param gain the gain in dB
     * \param chan the channel index 0 to N-1
     */
    virtual void set_gain(double gain, size_t chan = 0) = 0;

    /*!
     * Set the named gain on the dboard.
     * \param gain the gain in dB
     * \param name the name of the gain stage
     * \param chan the channel index 0 to N-1
     */
    virtual void set_gain(double gain, const std::string &name, size_t chan = 0) = 0;

    /*!
     * Get the actual dboard gain setting.
     * \param chan the channel index 0 to N-1
     * \return the actual gain in dB
     */
    virtual double get_gain(size_t chan = 0) = 0;

    /*!
     * Get the actual dboard gain setting of named stage.
     * \param name the name of the gain stage
     * \param chan the channel index 0 to N-1
     * \return the actual gain in dB
     */
    virtual double get_gain(const std::string &name, size_t chan = 0) = 0;

    /*!
     * Get the actual dboard gain setting of named stage.
     * \param chan the channel index 0 to N-1
     * \return the actual gain in dB
     */
    virtual std::vector<std::string> get_gain_names(size_t chan = 0) = 0;

    /*!
     * Get the settable gain range.
     * \param chan the channel index 0 to N-1
     * \return the gain range in dB
     */
    virtual uhd::gain_range_t get_gain_range(size_t chan = 0) = 0;

    /*!
     * Get the settable gain range.
     * \param name the name of the gain stage
     * \param chan the channel index 0 to N-1
     * \return the gain range in dB
     */
    virtual uhd::gain_range_t get_gain_range(const std::string &name, size_t chan = 0) = 0;

    /*!
     * Set the antenna to use.
     * \param ant the antenna string
     * \param chan the channel index 0 to N-1
     */
    virtual void set_antenna(const std::string &ant, size_t chan = 0) = 0;

    /*!
     * Get the antenna in use.
     * \param chan the channel index 0 to N-1
     * \return the antenna string
     */
    virtual std::string get_antenna(size_t chan = 0) = 0;

    /*!
     * Get a list of possible antennas.
     * \param chan the channel index 0 to N-1
     * \return a vector of antenna strings
     */
    virtual std::vector<std::string> get_antennas(size_t chan = 0) = 0;

    /*!
     * Set the subdevice bandpass filter.
     * \param bandwidth the filter bandwidth in Hz
     * \param chan the channel index 0 to N-1
     */
    virtual void set_bandwidth(double bandwidth, size_t chan = 0) = 0;

    /*!
     * Get a daughterboard sensor value.
     * \param name the name of the sensor
     * \param chan the channel index 0 to N-1
     * \return a sensor value object
     */
    virtual uhd::sensor_value_t get_dboard_sensor(const std::string &name, size_t chan = 0) = 0;

    /*!
     * Get a list of possible daughterboard sensor names.
     * \param chan the channel index 0 to N-1
     * \return a vector of sensor names
     */
    virtual std::vector<std::string> get_dboard_sensor_names(size_t chan = 0) = 0;

    /*!
     * Get a motherboard sensor value.
     * \param name the name of the sensor
     * \param mboard the motherboard index 0 to M-1
     * \return a sensor value object
     */
    virtual uhd::sensor_value_t get_mboard_sensor(const std::string &name, size_t mboard = 0) = 0;

    /*!
     * Get a list of possible motherboard sensor names.
     * \param mboard the motherboard index 0 to M-1
     * \return a vector of sensor names
     */
    virtual std::vector<std::string> get_mboard_sensor_names(size_t mboard = 0) = 0;

    /*!
     * Set the clock configuration.
     * \param clock_config the new configuration
     * \param mboard the motherboard index 0 to M-1
     */
    virtual void set_clock_config(const uhd::clock_config_t &clock_config, size_t mboard = 0) = 0;

    /*!
     * Get the master clock rate.
     * \param mboard the motherboard index 0 to M-1
     * \return the clock rate in Hz
     */
    virtual double get_clock_rate(size_t mboard = 0) = 0;

    /*!
     * Set the master clock rate.
     * \param rate the new rate in Hz
     * \param mboard the motherboard index 0 to M-1
     */
    virtual void set_clock_rate(double rate, size_t mboard = 0) = 0;

    /*!
     * Get the current time registers.
     * \param mboard the motherboard index 0 to M-1
     * \return the current usrp time
     */
    virtual uhd::time_spec_t get_time_now(size_t mboard = 0) = 0;

    /*!
     * Get the time when the last pps pulse occured.
     * \param mboard the motherboard index 0 to M-1
     * \return the current usrp time
     */
    virtual uhd::time_spec_t get_time_last_pps(size_t mboard = 0) = 0;

    /*!
     * Sets the time registers immediately.
     * \param time_spec the new time
     * \param mboard the motherboard index 0 to M-1
     */
    virtual void set_time_now(const uhd::time_spec_t &time_spec, size_t mboard = 0) = 0;

    /*!
     * Set the time registers at the next pps.
     * \param time_spec the new time
     */
    virtual void set_time_next_pps(const uhd::time_spec_t &time_spec) = 0;

    /*!
     * Sync the time registers with an unknown pps edge.
     * \param time_spec the new time
     */
    virtual void set_time_unknown_pps(const uhd::time_spec_t &time_spec) = 0;

    /*!
     * Get access to the underlying uhd dboard iface object.
     * \return the dboard_iface object
     */
    virtual uhd::usrp::dboard_iface::sptr get_dboard_iface(size_t chan = 0) = 0;

    /*!
     * Get access to the underlying uhd device object.
     * \return the multi usrp device object
     */
    virtual uhd::usrp::multi_usrp::sptr get_device(void) = 0;
};

#endif /* INCLUDED_GR_UHD_USRP_SOURCE_H */