From 2e72fc0243d3e5f3f89d3e5495de618a2b6c05fc Mon Sep 17 00:00:00 2001
From: Paul van Santen <pvansanten@transip.nl>
Date: Tue, 24 Dec 2019 10:41:21 +0100
Subject: [PATCH] Add support for other HEIF mimetype

---
 type_test.go | 1 +
 vips.go      | 6 ++++++
 2 files changed, 7 insertions(+)

diff --git a/type_test.go b/type_test.go
index b62b818..f3ee219 100644
--- a/type_test.go
+++ b/type_test.go
@@ -20,6 +20,7 @@ func TestDeterminateImageType(t *testing.T) {
 		{"test.svg", SVG},
 		{"test.jp2", MAGICK},
 		{"test.heic", HEIF},
+		{"test2.heic", HEIF},
 	}
 
 	for _, file := range files {
diff --git a/vips.go b/vips.go
index 0d93a60..afe4519 100644
--- a/vips.go
+++ b/vips.go
@@ -646,6 +646,12 @@ func vipsImageType(buf []byte) ImageType {
 	//   https://github.com/strukturag/libheif/issues/83#issuecomment-421427091
 	if IsTypeSupported(HEIF) && buf[4] == 0x66 && buf[5] == 0x74 && buf[6] == 0x79 && buf[7] == 0x70 &&
 		buf[8] == 0x68 && buf[9] == 0x65 && buf[10] == 0x69 && buf[11] == 0x63 {
+		// This is a HEIC file
+		return HEIF
+	}
+	if IsTypeSupported(HEIF) && buf[4] == 0x66 && buf[5] == 0x74 && buf[6] == 0x79 && buf[7] == 0x70 &&
+		buf[8] == 0x6d && buf[9] == 0x69 && buf[10] == 0x66 && buf[11] == 0x31 {
+		// This is a HEIF file
 		return HEIF
 	}