jpeg_forward_dct

type jpeg_forward_dct = record

  start_pass: procedure(

  cinfo: j_compress_ptr

);

  forward_DCT: procedure(

  cinfo: j_compress_ptr;

  compptr: jpeg_component_info_ptr;

  sample_data: JSAMPARRAY;

  coef_blocks: JBLOCKROW;

  start_row: JDIMENSION;

  start_col: JDIMENSION;

  num_blocks: JDIMENSION

);

end;