add support for apple live-photo mov file refer drewnoakes#344 drewno…

…akes#344

MetadataExtractor.Tests/Formats/Apple/LivePhotoMovTest.cs

@@ -0,0 +1,42 @@
+// Copyright (c) Drew Noakes and contributors. All Rights Reserved. Licensed under the Apache License, Version 2.0. See LICENSE in the project root for license information.
+namespace MetadataExtractor.Tests.Formats.Apple;
+
+public sealed class LivePhotoMovTest
+{
+    private const string TestFile = "Data/apple-livephoto-quicktime.mov";
+
+    [Fact]
+    public void GetLivePhotoQuickTimeInfo()
+    {
+        var exception = Record.Exception(() => ImageMetadataReader.ReadMetadata(TestFile));
+        Assert.Null(exception);
+    }
+
+    [Fact]
+    public void GetDirectoryNames()
+    {
+        var directories =ImageMetadataReader.ReadMetadata(TestFile);
+        Assert.NotNull(directories);
+        Assert.NotEmpty(directories);
+        var names = directories.Select(d => d.Name).ToArray();
+        Assert.Contains("QuickTime Movie Header", names);
+        Assert.Contains("QuickTime Track Header", names);
+        Assert.Contains("QuickTime Metadata Header", names);
+        Assert.Contains("File Type", names);
+        Assert.Contains("File", names);
+    }
+
+    /// <summary>
+    /// Live Photos is actually two files. Original JPEG/HEIF Image and Full HD Video(QuickTime).
+    /// in the ios ecology, live photo connect image with mov with same name, and meta key `Content Identifier`
+    /// </summary>
+    [Fact]
+    public void GetLivePhotoContentIdentifier()
+    {
+        var directories =ImageMetadataReader.ReadMetadata(TestFile);
+        var quickTimeMetadataHeaderDirectory = directories.Where(d => d.Name == "QuickTime Metadata Header")!.First();
+        var contentIdentifierTag = quickTimeMetadataHeaderDirectory.Tags.Where(t => t.Name == "Content Identifier")!.First();
+        Assert.Equal("EE6D649E-788F-4E3A-BCD2-483651BF7B34", contentIdentifierTag.Description);
+    }
+
+}

MetadataExtractor/Formats/QuickTime/QuickTimeTypeChecker.cs

@@ -63,13 +63,40 @@ internal sealed class QuickTimeTypeChecker : ITypeChecker
 
         private static ReadOnlySpan<byte> FtypBytes => "ftyp"u8;
 
-        public int ByteCount => 12;
+        public int ByteCount => 16;
 
-        public Util.FileType CheckType(byte[] bytes)
+        public Util.FileType CheckTypeOld(byte[] bytes)
         {
             return bytes.AsSpan(4, 4).SequenceEqual(FtypBytes)
                 ? _ftypTrie.Find(bytes.AsSpan(8, 4))
                 : Util.FileType.Unknown;
         }
+
+        public Util.FileType CheckType(byte[] bytes)
+        {
+            // for standard apple quicktime format
+            // 00000000: 0000 0014 6674 7970 7174 2020 0000 0000  ....ftypqt  ....
+            // 00000010: 7174 2020 0000 0008 7769 6465 003e f32a  qt  ....wide.>.*
+            // 00000020: 6d64 6174 cefe f2fe 09ff 09ff 0dff 31ff  mdat..........1.
+            if (bytes.AsSpan(4, 4).SequenceEqual(FtypBytes))
+            {
+                return _ftypTrie.Find(bytes.AsSpan(8, 4));
+            }
+
+            // for live photo which is export from  native protocols with afcclient/afcservice
+            // example 1
+            // 00000000: 0000 0008 7769 6465 0033 a50e 6d64 6174  ....wide.3..mdat
+            // 00000010: 0000 001f 4e01 051a 4756 4adc 5c4c 433f  ....N...GVJ.\LC?
+            // 00000020: 94ef c511 3cd1 43a8 03ee 1111 ee02 00c3  ....<.C.........
+            // example 2
+            // 00000000: 0000 0008 7769 6465 004f 854d 6d64 6174  ....wide.O.Mmdat
+            // 00000010: 0000 002a 4e01 0523 4756 4adc 5c4c 433f  ...*N..#GVJ.\LC?
+            // 00000020: 94ef c511 3cd1 43a8 0000 0300 0003 0000  ....<.C.........
+            if (bytes.AsSpan(4, 4).SequenceEqual("wide"u8) && bytes.AsSpan(12, 4).SequenceEqual("mdat"u8))
+            {
+                return Util.FileType.QuickTime;
+            }
+            return Util.FileType.Unknown;
+        }
     }
 }