patchPacking.hpp

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#pragma once
 
#include <span>
 
#include "uvgvpcc/uvgvpcc.hpp"
 
enum PCCaxisSwap {
    PATCH_ORIENTATION_DEFAULT = 0,  // 0: default
    PATCH_ORIENTATION_SWAP = 1,     // 1: swap
    PATCH_ORIENTATION_ROT90 = 2,    // 2: rotation 90
    PATCH_ORIENTATION_ROT180 = 3,   // 3: rotation 180
    PATCH_ORIENTATION_ROT270 = 4,   // 4: rotation 270
    PATCH_ORIENTATION_MIRROR = 5,   // 5: mirror
    PATCH_ORIENTATION_MROT90 = 6,   // 6: mirror + rotation 90
    PATCH_ORIENTATION_MROT180 = 7,  // 7: mirror + rotation 180
    PATCH_ORIENTATION_MROT270 = 8   // 8: similar to SWAP, not used switched SWAP with ROT90 positions
};
 
const std::vector<int> g_orientationHorizontal = {
    PATCH_ORIENTATION_SWAP,     // Horizontal orientation swap
    PATCH_ORIENTATION_DEFAULT,  // Horizontal orientation default
};
const std::vector<int> g_orientationVertical = {
    PATCH_ORIENTATION_DEFAULT,  // Vertical orientation default
    PATCH_ORIENTATION_SWAP,     // Vertical orientation swap
};
 
class PatchPacking {
   public:
    PatchPacking();
    static void frameIntraPatchPacking(const std::shared_ptr<uvgvpcc_enc::Frame>& frame, std::span<uvgvpcc_enc::Patch>* patchListSpan);
    static void frameInterPatchPacking(const std::vector<uvgvpcc_enc::Patch>& unionPatches, const std::shared_ptr<uvgvpcc_enc::Frame>& frame,
                                       std::span<uvgvpcc_enc::Patch>* matchedPatchList);
 
    static void allocateDefaultOccupancyMap(const std::shared_ptr<uvgvpcc_enc::Frame>& frame, const size_t mapHeight);
    static void gofPatchPacking(const std::shared_ptr<uvgvpcc_enc::GOF>& gof);
 
   private:
 
    static bool findPatchLocation(const size_t& mapHeight, size_t& maxPatchHeight,
                                  uvgvpcc_enc::Patch& patch, const std::vector<uint8_t>& frameOccupancyMap);
    static bool checkLocation(const size_t& mapHeight, const size_t& posOMu, const size_t& posOMv,
                              const size_t& patchWidth, const size_t& patchHeight, size_t& maxPatchHeight,
                              uvgvpcc_enc::Patch& patch, const std::vector<uint8_t>& frameOccupancyMap);
 
    static bool checkFitPatch(const size_t& patchPosX, const size_t& patchPosY, const size_t& patchWidth,
                              const size_t& patchHeight, const size_t& mapHeight, const std::vector<uint8_t>& frameOccupancyMap);
 
    static void patchMatchingBetweenTwoFrames(const std::shared_ptr<uvgvpcc_enc::Frame>& currentFrame,
                                              const std::shared_ptr<uvgvpcc_enc::Frame>& previousFrame);
    static float computeIoU(const uvgvpcc_enc::Patch& currentPatch, const uvgvpcc_enc::Patch& previousPatch);
};