// Compression module initialization routines
/// <summary>
/// Initialization of a JPEG compression object
/// </summary>
private void initialize()
{
/* Zero out pointers to permanent structures. */
m_progress = null;
m_dest = null;
m_comp_info = null;
for (int i = 0; i < JpegConstants.NUM_QUANT_TBLS; i++)
m_quant_tbl_ptrs[i] = null;
for (int i = 0; i < JpegConstants.NUM_HUFF_TBLS; i++)
{
m_dc_huff_tbl_ptrs[i] = null;
m_ac_huff_tbl_ptrs[i] = null;
}
m_script_space = null;
/* OK, I'm ready */
m_global_state = JpegState.CSTATE_START;
}
/// <summary>
/// Sets output stream.
/// </summary>
/// <param name="outfile">The output stream.</param>
/// <remarks>The caller must have already opened the stream, and is responsible
/// for closing it after finishing compression.</remarks>
/// <seealso href="07136fd7-d482-48de-b88c-1a4b9658c69e.htm" target="_self">Compression details</seealso>
public void jpeg_stdio_dest(Stream outfile)
{
m_dest = new my_destination_mgr(this, outfile);
}
/// <summary>
/// Initialization of a JPEG compression object
/// </summary>
private void initialize()
{
/* Zero out pointers to permanent structures. */
m_progress = null;
m_dest = null;
m_comp_info = null;
for (int i = 0; i < JpegConstants.NUM_QUANT_TBLS; i++)
{
m_quant_tbl_ptrs[i] = null;
q_scale_factor[i] = 100;
}
for (int i = 0; i < JpegConstants.NUM_HUFF_TBLS; i++)
{
m_dc_huff_tbl_ptrs[i] = null;
m_ac_huff_tbl_ptrs[i] = null;
}
/* Must do it here for emit_dqt in case jpeg_write_tables is used */
block_size = JpegConstants.DCTSIZE;
natural_order = JpegUtils.jpeg_natural_order;
lim_Se = JpegConstants.DCTSIZE2 - 1;
m_script_space = null;
/* OK, I'm ready */
m_global_state = JpegState.CSTATE_START;
}