Using existing openjp2 handlers for now. #112

Seems a little greasy, but it works.  Probably should think about a
separate error handler, though.

glymur/lib/openjp2.py

@@ -685,7 +685,7 @@ def check_error(status):
             raise IOError("OpenJPEG function failure.")
 
 # These library functions all return an error status.  Circumvent that and
-# force # them to raise an exception.
+# force them to raise an exception.
 FCNS = ['opj_decode', 'opj_decode_tile_data', 'opj_end_compress',
         'opj_encode', 'opj_end_decompress', 'opj_get_decoded_tile',
         'opj_read_header', 'opj_read_tile_header', 'opj_set_decode_area',

glymur/lib/openjpeg.py

@@ -527,8 +527,7 @@ def encode(cinfo, cio, image):
     OPENJPEG.opj_encode.argtypes = argtypes
     OPENJPEG.opj_encode.restype = ctypes.c_int
     status = OPENJPEG.opj_encode(cinfo, cio, image)
-    if not status:
-        raise RuntimeError("opj_encode failed")
+    return status
 
 
 def destroy_decompress(dinfo):