251                     let src_row = image.row16(Plane::A, y)?;  in import_alpha_from()  localVariable
253                         let alpha_pixel = (src_row[x]) >> (image.depth - 2);  in import_alpha_from()
261                     let src_row = image.row(Plane::A, y)?;  in import_alpha_from()  localVariable
263                         let alpha_pixel = ((src_row[x]) >> 6) as u16;  in import_alpha_from()
276                     let src_row = image.row16(Plane::A, y)?;  in import_alpha_from()  localVariable
278                         dst_row[(x * 4) + dst_alpha_offset] = src_row[x];  in import_alpha_from()
285                 let src_row = image.row(Plane::A, y)?;  in import_alpha_from()  localVariable
287                     dst_row[(x * 4) + dst_alpha_offset] = src_row[x];  in import_alpha_from()
298                     let src_row = image.row16(Plane::A, y)?;  in import_alpha_from()  localVariable
301                             src_row[x],  in import_alpha_from()
312                 let src_row = image.row16(Plane::A, y)?;  in import_alpha_from()  localVariable
315                         Self::rescale_alpha_value(src_row[x], image.max_channel_f(), max_channel)  in import_alpha_from()
324             let src_row = image.row(Plane::A, y)?;  in import_alpha_from()  localVariable
327                     src_row[x] as u16,  in import_alpha_from()
362                     let src_row = src.row16(Plane::A, y)?;  in alpha_to_full_range()  localVariable
365                         dst_row[x] = limited_to_full_y(depth, src_row[x]);  in alpha_to_full_range()
370                     let src_row = src.row(Plane::A, y)?;  in alpha_to_full_range()  localVariable
373                         dst_row[x] = limited_to_full_y(8, src_row[x] as u16) as u8;  in alpha_to_full_range()