#ifndef OPENPOSE_POSE_BODY_PARTS_CONNECTOR_HPP
#define OPENPOSE_POSE_BODY_PARTS_CONNECTOR_HPP

#include <openpose/core/common.hpp>
#include <openpose/pose/enumClasses.hpp>

namespace op
{
    template <typename T>
    void connectBodyPartsCpu(
        Array<T>& poseKeypoints, Array<T>& poseScores, const T* const heatMapPtr, const T* const peaksPtr,
        const PoseModel poseModel, const Point<int>& heatMapSize, const int maxPeaks, const T interMinAboveThreshold,
        const T interThreshold, const int minSubsetCnt, const T minSubsetScore, const T defaultNmsThreshold,
        const T scaleFactor = 1.f, const bool maximizePositives = false);

    // Windows: Cuda functions do not include OP_API
    template <typename T>
    void connectBodyPartsGpu(
        Array<T>& poseKeypoints, Array<T>& poseScores, const T* const heatMapGpuPtr, const T* const peaksPtr,
        const PoseModel poseModel, const Point<int>& heatMapSize, const int maxPeaks, const T interMinAboveThreshold,
        const T interThreshold, const int minSubsetCnt, const T minSubsetScore, const T defaultNmsThreshold,
        const T scaleFactor, const bool maximizePositives, Array<T> pairScoresCpu, T* pairScoresGpuPtr,
        const unsigned int* const bodyPartPairsGpuPtr, const unsigned int* const mapIdxGpuPtr,
        const T* const peaksGpuPtr);

    template <typename T>
    void connectBodyPartsOcl(
        Array<T>& poseKeypoints, Array<T>& poseScores, const T* const heatMapGpuPtr, const T* const peaksPtr,
        const PoseModel poseModel, const Point<int>& heatMapSize, const int maxPeaks, const T interMinAboveThreshold,
        const T interThreshold, const int minSubsetCnt, const T minSubsetScore, const T defaultNmsThreshold,
        const T scaleFactor = 1.f, const bool maximizePositives = false,
        Array<T> pairScoresCpu = Array<T>{}, T* pairScoresGpuPtr = nullptr,
        const unsigned int* const bodyPartPairsGpuPtr = nullptr, const unsigned int* const mapIdxGpuPtr = nullptr,
        const T* const peaksGpuPtr = nullptr, const int gpuID = 0);

    // Private functions used by the 2 above functions
    template <typename T>
    std::vector<std::pair<std::vector<int>, T>> createPeopleVector(
        const T* const heatMapPtr, const T* const peaksPtr, const PoseModel poseModel, const Point<int>& heatMapSize,
        const int maxPeaks, const T interThreshold, const T interMinAboveThreshold,
        const std::vector<unsigned int>& bodyPartPairs, const unsigned int numberBodyParts,
        const unsigned int numberBodyPartPairs, const T defaultNmsThreshold,
        const Array<T>& precomputedPAFs = Array<T>());

    template <typename T>
    void removePeopleBelowThresholdsAndFillFaces(
        std::vector<int>& validSubsetIndexes, int& numberPeople,
        std::vector<std::pair<std::vector<int>, T>>& subsets, const unsigned int numberBodyParts,
        const int minSubsetCnt, const T minSubsetScore, const bool maximizePositives, const T* const peaksPtr);

    template <typename T>
    void peopleVectorToPeopleArray(
        Array<T>& poseKeypoints, Array<T>& poseScores, const T scaleFactor,
        const std::vector<std::pair<std::vector<int>, T>>& subsets, const std::vector<int>& validSubsetIndexes,
        const T* const peaksPtr, const int numberPeople, const unsigned int numberBodyParts,
        const unsigned int numberBodyPartPairs);

    template <typename T>
    std::vector<std::tuple<T, T, int, int, int>> pafPtrIntoVector(
        const Array<T>& pairScores, const T* const peaksPtr, const int maxPeaks,
        const std::vector<unsigned int>& bodyPartPairs, const unsigned int numberBodyPartPairs);

    template <typename T>
    std::vector<std::pair<std::vector<int>, T>> pafVectorIntoPeopleVector(
        const std::vector<std::tuple<T, T, int, int, int>>& pairScores, const T* const peaksPtr, const int maxPeaks,
        const std::vector<unsigned int>& bodyPartPairs, const unsigned int numberBodyParts);
}

#endif // OPENPOSE_POSE_BODY_PARTS_CONNECTOR_HPP