Packages

evision

0.2.17-rc2
1.0.1-rc.0 1.0.0 1.0.0-rc.0 0.2.17 0.2.17-rc2 0.2.17-rc1 0.2.16 0.2.16-pre.2 0.2.16-pre 0.2.15 0.2.14 0.2.13 0.2.12 0.2.11 0.2.9 0.2.8 0.2.7 0.2.6 0.2.5 0.2.4 0.2.3 0.2.2 0.2.2-rc2 0.2.1 0.2.0 0.1.39 0.1.38 0.1.37 0.1.36 0.1.35 0.1.34 0.1.33 0.1.32 retired 0.1.31 0.1.30 0.1.29 0.1.28 0.1.27 0.1.26 0.1.26-rc3 0.1.26-rc2 0.1.26-rc1 0.1.26-rc0 0.1.25 0.1.24 0.1.23 0.1.22 0.1.21 0.1.20 0.1.19 0.1.18 0.1.17 0.1.16 0.1.15 0.1.14 0.1.13 0.1.12 0.1.11 0.1.10 0.1.9 0.1.8 0.1.7

OpenCV-Erlang/Elixir binding.

HexDocs

Current section

Files

Jump to
Readme
62 Versions
5 Dependencies
Dependants
Files
Activity
evision c_src modules evision_backend cmp.h
Raw

c_src/modules/evision_backend/cmp.h 

#ifndef EVISION_BACKEND_CMP_H

#define EVISION_BACKEND_CMP_H



#include <erl_nif.h>

#include "../../ArgInfo.hpp"



// @evision c: mat_cmp, evision_cv_mat_cmp, 1

// @evision nif: def mat_cmp(_opts \\ []), do: :erlang.nif_error(:undefined)

static ERL_NIF_TERM evision_cv_mat_cmp(ErlNifEnv *env, int argc, const ERL_NIF_TERM argv[]) {

    using namespace cv;

    ERL_NIF_TERM error_term = 0;

    std::map<std::string, ERL_NIF_TERM> erl_terms;

    int nif_opts_index = 0;

    evision::nif::parse_arg(env, nif_opts_index, argv, erl_terms);

    int error_flag = false;



    {

        Mat l;

        Mat r;

        std::string type;



        if (evision_to_safe(env, evision_get_kw(env, erl_terms, "l"), l, ArgInfo("l", 0)) &&

            evision_to_safe(env, evision_get_kw(env, erl_terms, "r"), r, ArgInfo("r", 0)) &&

            evision_to_safe(env, evision_get_kw(env, erl_terms, "type"), type, ArgInfo("type", 0))) {



            int cmpop = -1;

            if (type == "eq") cmpop = cv::CMP_EQ;

            else if (type == "gt") cmpop = cv::CMP_GT;

            else if (type == "ge") cmpop = cv::CMP_GE;

            else if (type == "lt") cmpop = cv::CMP_LT;

            else if (type == "le") cmpop = cv::CMP_LE;

            else if (type == "ne") cmpop = cv::CMP_NE;

            else {

                return evision::nif::error(env, "not implemented for the requested compare type, only 'eq', 'gt', 'ge', 'lt', 'le' and 'ne' are supported.");

            }



            Mat ret;



            ERRWRAP2(cv::compare(l, r, ret, cmpop), env, error_flag, error_term);

            if (!error_flag) {

                ERRWRAP2(ret = ret / 255, env, error_flag, error_term);

                if (!error_flag) {

                    return evision_from(env, ret);

                }

            }

        }

    }



    if (error_flag) return error_term;

    else return enif_make_badarg(env);

}



#endif // EVISION_BACKEND_CMP_H