Method startBlock

io/BpfCompressor.cpp:41–65

#ifdef PDAL_HAVE_ZLIB
void BpfCompressor::startBlock()
{
    // Initialize the stream.
    m_strm.zalloc = Z_NULL;
    m_strm.zfree = Z_NULL;
    m_strm.opaque = Z_NULL;
    if (deflateInit(&m_strm, Z_DEFAULT_COMPRESSION) != Z_OK)
        throw error("Could not initialize BPF compressor.");

    m_rawSize = 0;
    m_compressedSize = 0;
    uint32_t rawSize = 0;
    uint32_t compressedSize = 0;

    // Initiailize the streambuf with the backing buffer.
    m_charbuf.initialize(m_inbuf.data(), m_inbuf.size());

    // Note our position so that we can rewind here.
    m_blockStart.mark();
    m_out << rawSize << compressedSize;

    // Make a new stream from our charbuf and push it so that future writes
    // to our stream go to the backing vector.
    m_out.pushStream(new std::ostream(&m_charbuf));
}


void BpfCompressor::compress()