First version of blackmagic native dng support, #4285

rtengine/dcraw.h

@@ -290,6 +290,7 @@ void ljpeg_idct (struct jhead *jh);
 void canon_sraw_load_raw();
 void adobe_copy_pixel (unsigned row, unsigned col, ushort **rp);
 void lossless_dng_load_raw();
+void lossless_dnglj92_load_raw();
 void packed_dng_load_raw();
 void deflate_dng_load_raw();
 void init_fuji_compr(struct fuji_compressed_params* info);