Method LoadTRK

src/Loaders/nfs2_loader.cpp:537–734

template<typename Platform>
bool NFS2<Platform>::LoadTRK(std::string trk_path, const shared_ptr<typename Platform::TRACK> &track) {
    LOG(INFO) << "Loading TRK File located at " << trk_path;
    ifstream trk(trk_path, ios::in | ios::binary);
    // TRK file header data
    unsigned char header[4];
    long unknownHeader[5];

    // Check we're in a valid TRK file
    if (trk.read(((char *) header), sizeof(unsigned char) * 4).gcount() != sizeof(unsigned char) * 4) {
        LOG(WARNING) << "Couldn't open file/truncated.";
        return false;
    }
    // Header should contain TRAC
    if (memcmp(header, "TRAC", sizeof(header)) != 0) {
        LOG(WARNING) << "Invalid TRK Header.";
        return false;
    }

    // Unknown header data
    if (trk.read(((char *) unknownHeader), sizeof(uint32_t) * 5).gcount() != sizeof(uint32_t) * 5) return false;

    // Basic Track data
    trk.read((char *) &track->nSuperBlocks, sizeof(uint32_t));
    trk.read((char *) &track->nBlocks, sizeof(uint32_t));
    track->superblocks = static_cast<typename Platform::SUPERBLOCK *>(calloc(track->nBlocks, sizeof(typename Platform::SUPERBLOCK)));

    // Offsets of Superblocks in TRK file
    uint32_t *superblockOffsets = static_cast<uint32_t *>(calloc(track->nSuperBlocks, sizeof(uint32_t)));
    if (trk.read(((char *) superblockOffsets), track->nSuperBlocks * sizeof(uint32_t)).gcount() != track->nSuperBlocks * sizeof(uint32_t)) {
        free(superblockOffsets);
        return false;
    }

    // Reference coordinates for each block
    track->blockReferenceCoords = static_cast<VERT_HIGHP *>(calloc(track->nBlocks, sizeof(VERT_HIGHP)));
    if (trk.read((char *) track->blockReferenceCoords, track->nBlocks * sizeof(VERT_HIGHP)).gcount() != track->nBlocks * sizeof(VERT_HIGHP)) {
        free(superblockOffsets);
        return false;
    }

    for (uint32_t superBlock_Idx = 0; superBlock_Idx < track->nSuperBlocks; ++superBlock_Idx) {
        LOG(DEBUG) << "SuperBlock " << superBlock_Idx + 1 << " of " << track->nSuperBlocks;
        // Get the superblock header
        auto *superblock = &track->superblocks[superBlock_Idx];
        trk.seekg(superblockOffsets[superBlock_Idx], ios_base::beg);
        trk.read((char *) &superblock->superBlockSize, sizeof(uint32_t));
        trk.read((char *) &superblock->nBlocks, sizeof(uint32_t));
        trk.read((char *) &superblock->padding, sizeof(uint32_t));

        if (superblock->nBlocks != 0) {
            // Get the offsets of the child blocks within superblock
            uint32_t *blockOffsets = (uint32_t *) calloc(static_cast<size_t>(superblock->nBlocks), sizeof(uint32_t));
            trk.read((char *) blockOffsets, superblock->nBlocks * sizeof(uint32_t));
            superblock->trackBlocks = static_cast<typename Platform::TRKBLOCK *>(calloc(static_cast<size_t>(superblock->nBlocks), sizeof(typename Platform::TRKBLOCK)));

            for (uint32_t block_Idx = 0; block_Idx < superblock->nBlocks; ++block_Idx) {
                auto *trackblock = &superblock->trackBlocks[block_Idx];
                // Read Header