internal void Assign(jpeg_component_info ci)
{
component_id = ci.component_id;
component_index = ci.component_index;
h_samp_factor = ci.h_samp_factor;
v_samp_factor = ci.v_samp_factor;
quant_tbl_no = ci.quant_tbl_no;
dc_tbl_no = ci.dc_tbl_no;
ac_tbl_no = ci.ac_tbl_no;
width_in_blocks = ci.width_in_blocks;
height_in_blocks = ci.height_in_blocks;
DCT_scaled_size = ci.DCT_scaled_size;
downsampled_width = ci.downsampled_width;
downsampled_height = ci.downsampled_height;
component_needed = ci.component_needed;
MCU_width = ci.MCU_width;
MCU_height = ci.MCU_height;
MCU_blocks = ci.MCU_blocks;
MCU_sample_width = ci.MCU_sample_width;
last_col_width = ci.last_col_width;
last_row_height = ci.last_row_height;
quant_table = ci.quant_table;
}
/// <summary>
/// Allows an arbitrary quantization table to be created.
/// </summary>
/// <param name="which_tbl">Indicates which table slot to fill.</param>
/// <param name="basic_table">An array of 64 unsigned integers given in normal array order.
/// These values are multiplied by <c>scale_factor/100</c> and then clamped to the range 1..65535
/// (or to 1..255 if <c>force_baseline</c> is <c>true</c>).<br/>
/// The basic table should be given in JPEG zigzag order.
/// </param>
/// <param name="scale_factor">Multiplier for values in <c>basic_table</c>.</param>
/// <param name="force_baseline">Defines range of values in <c>basic_table</c>.
/// If <c>true</c> - 1..255, otherwise - 1..65535.</param>
/// <seealso href="ce3f6712-3633-4a58-af07-626a4fba9ae4.htm" target="_self">Compression parameter selection</seealso>
public void jpeg_add_quant_table(int which_tbl, int[] basic_table, int scale_factor, bool force_baseline)
{
/* Safety check to ensure start_compress not called yet. */
if (m_global_state != JpegState.CSTATE_START)
ERREXIT(J_MESSAGE_CODE.JERR_BAD_STATE, (int)m_global_state);
if (which_tbl < 0 || which_tbl >= JpegConstants.NUM_QUANT_TBLS)
ERREXIT(J_MESSAGE_CODE.JERR_DQT_INDEX, which_tbl);
if (m_quant_tbl_ptrs[which_tbl] == null)
m_quant_tbl_ptrs[which_tbl] = new JQUANT_TBL();
for (int i = 0; i < JpegConstants.DCTSIZE2; i++)
{
int temp = (basic_table[i] * scale_factor + 50) / 100;
/* limit the values to the valid range */
if (temp <= 0)
temp = 1;
/* max quantizer needed for 12 bits */
if (temp > 32767)
temp = 32767;
/* limit to baseline range if requested */
if (force_baseline && temp > 255)
temp = 255;
m_quant_tbl_ptrs[which_tbl].quantval[i] = (short)temp;
}
/* Initialize sent_table false so table will be written to JPEG file. */
m_quant_tbl_ptrs[which_tbl].Sent_table = false;
}
internal void Assign(jpeg_component_info ci)
{
component_id = ci.component_id;
component_index = ci.component_index;
h_samp_factor = ci.h_samp_factor;
v_samp_factor = ci.v_samp_factor;
quant_tbl_no = ci.quant_tbl_no;
dc_tbl_no = ci.dc_tbl_no;
ac_tbl_no = ci.ac_tbl_no;
width_in_blocks = ci.width_in_blocks;
height_in_blocks = ci.height_in_blocks;
DCT_h_scaled_size = ci.DCT_h_scaled_size;
DCT_v_scaled_size = ci.DCT_v_scaled_size;
downsampled_width = ci.downsampled_width;
downsampled_height = ci.downsampled_height;
component_needed = ci.component_needed;
MCU_width = ci.MCU_width;
MCU_height = ci.MCU_height;
MCU_blocks = ci.MCU_blocks;
MCU_sample_width = ci.MCU_sample_width;
last_col_width = ci.last_col_width;
last_row_height = ci.last_row_height;
quant_table = ci.quant_table;
}
