Bug 692478: Honour decode arrays for jpx images

Add simple code to read decode array and apply it to a jpx image
after loading. Solves bug.

1 files changed, 12 insertions, 0 deletions

diff --git a/pdf/pdf_image.c b/pdf/pdf_image.c
index e1901100..50292092 100644
--- a/pdf/pdf_image.c
+++ b/pdf/pdf_image.c
@@ -329,6 +329,18 @@ pdf_load_jpx_image(fz_pixmap **imgp, pdf_xref *xref, fz_obj *dict)
 		}
 	}
 
+	obj = fz_dict_getsa(dict, "Decode", "D");
+	if (obj)
+	{
+		float decode[FZ_MAX_COLORS * 2];
+		int i;
+
+		for (i = 0; i < img->n * 2; i++)
+			decode[i] = fz_to_real(fz_array_get(obj, i));
+
+		fz_decode_tile(img, decode);
+	}
+
 	*imgp = img;
 	return fz_okay;
 }