public jpeg_d_coef_controller(jpeg_decompress_struct cinfo, bool need_full_buffer)
{
m_cinfo = cinfo;
/* Create the coefficient buffer. */
if (need_full_buffer)
{
/* Allocate a full-image virtual array for each component, */
/* padded to a multiple of samp_factor DCT blocks in each direction. */
/* Note we ask for a pre-zeroed array. */
for (int ci = 0; ci < cinfo.m_num_components; ci++)
{
m_whole_image[ci] = jpeg_common_struct.CreateBlocksArray(
JpegUtils.jround_up(cinfo.Comp_info[ci].Width_in_blocks, cinfo.Comp_info[ci].H_samp_factor),
JpegUtils.jround_up(cinfo.Comp_info[ci].height_in_blocks, cinfo.Comp_info[ci].V_samp_factor));
m_whole_image[ci].ErrorProcessor = cinfo;
}
m_useDummyConsumeData = false;
m_decompressor = DecompressorType.Ordinary;
m_coef_arrays = m_whole_image; /* link to virtual arrays */
}
else
{
/* We only need a single-MCU buffer. */
for (int i = 0; i < JpegConstants.D_MAX_BLOCKS_IN_MCU; i++)
{
m_MCU_buffer[i] = new JBLOCK();
}
m_useDummyConsumeData = true;
m_decompressor = DecompressorType.OnePass;
m_coef_arrays = null; /* flag for no virtual arrays */
}
}
/// <summary>
/// Initialize for an output processing pass.
/// </summary>
public void start_output_pass()
{
/* If multipass, check to see whether to use block smoothing on this pass */
if (m_coef_arrays != null)
{
if (m_cinfo.m_do_block_smoothing && smoothing_ok())
{
m_decompressor = DecompressorType.Smooth;
}
else
{
m_decompressor = DecompressorType.Ordinary;
}
}
m_cinfo.m_output_iMCU_row = 0;
}
/// <summary>
/// Initialize for an output processing pass.
/// </summary>
public void StartOutputPass()
{
/* If multipass, check to see whether to use block smoothing on this pass */
if (m_coef_arrays is object)
{
if (m_cinfo.doBlockSmoothing && SmoothingOK())
{
m_decompressor = DecompressorType.Smooth;
}
else
{
m_decompressor = DecompressorType.Ordinary;
}
}
m_cinfo.outputIMcuRow = 0;
}
public jpeg_d_coef_controller(jpeg_decompress_struct cinfo, bool need_full_buffer)
{
m_cinfo = cinfo;
/* Create the coefficient buffer. */
if (need_full_buffer)
{
/* Allocate a full-image virtual array for each component, */
/* padded to a multiple of samp_factor DCT blocks in each direction. */
/* Note we ask for a pre-zeroed array. */
for (int ci = 0; ci < cinfo.m_num_components; ci++)
{
m_whole_image[ci] = jpeg_common_struct.CreateBlocksArray(
JpegUtils.jround_up(cinfo.Comp_info[ci].Width_in_blocks, cinfo.Comp_info[ci].H_samp_factor),
JpegUtils.jround_up(cinfo.Comp_info[ci].height_in_blocks, cinfo.Comp_info[ci].V_samp_factor));
m_whole_image[ci].ErrorProcessor = cinfo;
}
m_useDummyConsumeData = false;
m_decompressor = DecompressorType.Ordinary;
m_coef_arrays = m_whole_image; /* link to virtual arrays */
}
else
{
/* We only need a single-MCU buffer. */
JBLOCK[] buffer = new JBLOCK[JpegConstants.D_MAX_BLOCKS_IN_MCU];
for (int i = 0; i < JpegConstants.D_MAX_BLOCKS_IN_MCU; i++)
{
buffer[i] = new JBLOCK();
for (int ii = 0; ii < buffer[i].data.Length; ii++)
buffer[i].data[ii] = -12851;
m_MCU_buffer[i] = buffer[i];
}
m_useDummyConsumeData = true;
m_decompressor = DecompressorType.OnePass;
m_coef_arrays = null; /* flag for no virtual arrays */
}
}
/// <summary>
/// Initialize for an output processing pass.
/// </summary>
public void start_output_pass()
{
/* If multipass, check to see whether to use block smoothing on this pass */
if (m_coef_arrays != null)
{
if (m_cinfo.m_do_block_smoothing && smoothing_ok())
m_decompressor = DecompressorType.Smooth;
else
m_decompressor = DecompressorType.Ordinary;
}
m_cinfo.m_output_iMCU_row = 0;
}
