| JMETHOD(void, start_pass,(j_decompress_ptr cinfo)) | jpeg_upsampler | |
| JMETHOD(void, upsample,(j_decompress_ptr cinfo, JSAMPIMAGE input_buf, JDIMENSION *in_row_group_ctr, JDIMENSION in_row_groups_avail, JSAMPARRAY output_buf, JDIMENSION *out_row_ctr, JDIMENSION out_rows_avail)) | jpeg_upsampler | |
| need_context_rows | jpeg_upsampler |