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//
// Copyright 2010-2011,2014 Ettus Research LLC
// Copyright 2018 Ettus Research, a National Instruments Company
//
// SPDX-License-Identifier: GPL-3.0-or-later
//
#ifndef INCLUDED_UHD_UTILS_GAIN_GROUP_HPP
#define INCLUDED_UHD_UTILS_GAIN_GROUP_HPP
#include <uhd/config.hpp>
#include <uhd/types/ranges.hpp>
#include <uhd/utils/noncopyable.hpp>
#include <functional>
#include <memory>
#include <string>
#include <vector>
namespace uhd {
/*!
* A set of function to control a gain element.
*/
struct UHD_API gain_fcns_t
{
std::function<gain_range_t(void)> get_range;
std::function<double(void)> get_value;
std::function<void(double)> set_value;
};
class UHD_API gain_group : uhd::noncopyable
{
public:
typedef std::shared_ptr<gain_group> sptr;
virtual ~gain_group(void) = 0;
/*!
* Get the gain range for the gain element specified by name.
* For an empty name, get the overall gain range for this group.
* Overall step is defined as the minimum step size.
* \param name name of the gain element (optional)
* \return a gain range with overall min, max, step
*/
virtual gain_range_t get_range(const std::string& name = "") = 0;
/*!
* Get the gain value for the gain element specified by name.
* For an empty name, get the overall gain value for this group.
* \param name name of the gain element (optional)
* \return a gain value of the element or all elements
*/
virtual double get_value(const std::string& name = "") = 0;
/*!
* Set the gain value for the gain element specified by name.
* For an empty name, set the overall gain value for this group.
* The power will be distributed across individual gain elements.
* The semantics of how to do this are determined by the priority.
* \param gain the gain to set for the element or across the group
* \param name name of the gain element (optional)
*/
virtual void set_value(double gain, const std::string& name = "") = 0;
/*!
* Get a list of names of registered gain elements.
* The names are in the order that they were registered.
* \return a vector of gain name strings
*/
virtual const std::vector<std::string> get_names(void) = 0;
/*!
* Register a set of gain functions into this group:
*
* The name should be a unique and non-empty name.
* Otherwise, the implementation will rename it.
*
* Priority determines how power will be distributed
* with higher priorities getting the power first,
* and lower priorities getting the remainder power.
*
* \param name the name of the gain element
* \param gain_fcns the set of gain functions
* \param priority the priority of the gain element
*/
virtual void register_fcns(
const std::string& name, const gain_fcns_t& gain_fcns, size_t priority = 0) = 0;
/*!
* Make a new empty gain group.
* \return a gain group object.
*/
static sptr make(void);
/*!
* Make a new gain group with all zero values.
* \param name the name of the (only and zero-valued) gain element
* \return a gain group object populated with zeroes
*/
static sptr make_zero();
};
} // namespace uhd
#endif /* INCLUDED_UHD_UTILS_GAIN_GROUP_HPP */
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