From 97cce5ba832498120ea0037c67b9fe8221c4548f Mon Sep 17 00:00:00 2001
From: James Zern <jzern@google.com>
Date: Tue, 25 Apr 2017 19:09:02 -0700
Subject: [PATCH] tiffdec: only request EXTRASAMPLES w/> 3 samples/px

Change-Id: I820e7de34e500c42ab51c97a70f25319807d58eb
---
 imageio/tiffdec.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/imageio/tiffdec.c b/imageio/tiffdec.c
index 7894864c..d363d7ca 100644
--- a/imageio/tiffdec.c
+++ b/imageio/tiffdec.c
@@ -193,8 +193,8 @@ int ReadTIFF(const uint8_t* const data, size_t data_size,
                                            sizeof(*raster))) {
     goto End;
   }
-  if (!TIFFGetField(tif, TIFFTAG_EXTRASAMPLES,
-                    &extra_samples, &extra_samples_ptr)) {
+  if (samples_per_px > 3 && !TIFFGetField(tif, TIFFTAG_EXTRASAMPLES,
+                                          &extra_samples, &extra_samples_ptr)) {
     fprintf(stderr, "Error! Cannot retrieve TIFF ExtraSamples info.\n");
     goto End;
   }