jpeg_color_converter

type jpeg_color_converter = record

  start_pass: procedure(

  cinfo: j_compress_ptr

);

  color_convert: procedure(

  cinfo: j_compress_ptr;

  input_buf: JSAMPARRAY;

  output_buf: JSAMPIMAGE;

  output_row: JDIMENSION;

  num_rows: int

);

end;