| JMETHOD(void, start_pass,(j_compress_ptr cinfo, J_BUF_MODE pass_mode)) | jpeg_c_prep_controller | |
| JMETHOD(void, pre_process_data,(j_compress_ptr cinfo, JSAMPARRAY input_buf, JDIMENSION *in_row_ctr, JDIMENSION in_rows_avail, JSAMPIMAGE output_buf, JDIMENSION *out_row_group_ctr, JDIMENSION out_row_groups_avail)) | jpeg_c_prep_controller |