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Diffstat (limited to 'host/lib/cal/interpolation.hpp')
-rw-r--r-- | host/lib/cal/interpolation.hpp | 71 |
1 files changed, 71 insertions, 0 deletions
diff --git a/host/lib/cal/interpolation.hpp b/host/lib/cal/interpolation.hpp new file mode 100644 index 000000000..34f084fbd --- /dev/null +++ b/host/lib/cal/interpolation.hpp @@ -0,0 +1,71 @@ +// +// Copyright 2016 Ettus Research +// +// 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_UHD_INTERPOLATION_HPP +#define INCLUDED_UHD_INTERPOLATION_HPP + +#include <uhd/exception.hpp> +#include <boost/format.hpp> +#include <map> +#include <cmath> + +namespace uhd { +namespace cal { + +template<typename in_type, typename out_type> +struct interp +{ +public: + typedef std::vector<in_type> args_t; + typedef std::map<args_t, out_type> container_t; + + /*! + * Nearest neighbor interpolation given a mapping: R^n -> R + * + * 1) search for the nearest point in R^n + * 2) find the nearest output scalars in R + * + * \param data input data container + * \param args input data point + * \returns interpolated output value + */ + const out_type nn_interp(container_t &data, const args_t &args); + + /*! + * Bilinear interpolation given a mapping: R^2 -> R + * + * 1) search for 4 surrounding points in R^2 + * 2) find the output scalars in R + * 3) solve the system of equations given our input mappings + * + * \param data input data container + * \param args input data point + * \returns interpolated output value + */ + const out_type bl_interp(container_t &data, const args_t &args); + +private: + /*! + * Calculate the distance between two points + */ + static in_type calc_dist(const args_t &a, const args_t &b); +}; + +} // namespace cal +} // namespace uhd + +#endif /* INCLUDED_UHD_INTERPOLATION_HPP */ |