From 647de77b707af0897cf8070844a9cf98a78b8621 Mon Sep 17 00:00:00 2001
From: raph <raph@dellta.fritz.box>
Date: Thu, 10 Sep 2020 18:37:15 +0200
Subject: [PATCH] Add support for UNDEFINED type

According to TIFF spec this is an byte-array that may contain arbitrary
data.
---
 src/decoder/ifd.rs | 5 ++++-
 src/tags.rs        | 1 +
 2 files changed, 5 insertions(+), 1 deletion(-)

diff --git a/src/decoder/ifd.rs b/src/decoder/ifd.rs
index d11319b..e8f8f16 100644
--- a/src/decoder/ifd.rs
+++ b/src/decoder/ifd.rs
@@ -425,7 +425,10 @@ impl Entry {
                         let string = decoder.read_string(n)?;
                         Ok(Ascii(string))
                     }
-                }
+                },
+                (Type::UNDEFINED, n) => self.decode_offset(n, bo, limits, decoder, |decoder| {
+                    Ok(Unsigned(u32::from(decoder.read_byte()?)))
+                }),
                 _ => Err(TiffError::UnsupportedError(
                     TiffUnsupportedError::UnsupportedDataType,
                 )),
diff --git a/src/tags.rs b/src/tags.rs
index d28808a..1364fa6 100644
--- a/src/tags.rs
+++ b/src/tags.rs
@@ -130,6 +130,7 @@ pub enum Type(u16) {
     LONG = 4,
     RATIONAL = 5,
     SBYTE = 6,
+    UNDEFINED = 7,
     SSHORT = 8,
     SLONG = 9,
     SRATIONAL = 10,