Method ready

io/LasReader.cpp:464–514

void LasReader::ready(PointTableRef table)
{
    if (getNumPoints() == 0)
        return;

    d->pool.resize(d->opts.numThreads);
    LasStreamPtr lasStream(createStream());
    std::istream& stream(*lasStream);

    d->currentTile.reset();
    d->tiles.clear();

    d->index = 0;
    if (d->header.dataCompressed())
    {
        const las::Vlr *vlr = las::findVlr(las::LaszipUserId, las::LaszipRecordId, d->vlrs);
        if (!vlr)
            throwError("LAZ file missing required laszip VLR.");
        lazperf::laz_vlr laz_vlr;
        laz_vlr.fill(vlr->data(), vlr->dataSize());
        try
        {
            d->chunkInfo.load(stream, d->header.pointOffset, d->header.pointCount(),
                laz_vlr.chunk_size);
        }
        catch (const pdal_error& e)
        {
            throwError(e.what());
        }

        d->nextFetchChunk = 0;
        d->nextFetchPoint = 0;
        if (d->opts.start > 0)
        {
            if (d->opts.start >= d->header.pointCount())
                throwError("'start' option set past end of file.");
            d->nextFetchChunk = d->chunkInfo.chunk(d->opts.start);
            d->nextFetchPoint = d->chunkInfo.index(d->opts.start, d->nextFetchChunk);
        }
        d->nextReadChunk = d->nextFetchChunk;
    }
    else
    {
        d->nextFetchPoint = d->opts.start;
        d->nextFetchChunk = 0;
        d->nextReadChunk = 0;
    }

    for (int i = 0; i < d->opts.numThreads; ++i)
        d->queueNext();
}

void LasReader::queueNextCompressedChunk()
{