Add Podcast Properties to ID3V2 Tag

src/TaglibSharp.Tests/TaggingFormats/Id3V2Test.cs

@@ -576,6 +576,126 @@ public void TestPictures ()
 			}
 		}
 
+		[Test]
+		public void TestPocastFlag ()
+		{
+			Tag tag = new Tag ();
+
+			// This property isn't supported in version 2.
+			for (byte version = 3; version <= 4; version++) {
+				tag.Version = version;
+
+				TagTestWithSave (ref tag, delegate (Tag t, string m) {
+					Assert.IsTrue (t.IsEmpty, "Initial (IsEmpty): " + m);
+					Assert.IsFalse (t.PodcastFlag, "Initial (False): " + m);
+				}, 3);
+
+				tag.PodcastFlag = true;
+
+				TagTestWithSave (ref tag, delegate (Tag t, string m) {
+					Assert.IsFalse (t.IsEmpty, "Value Set (!IsEmpty): " + m);
+					Assert.IsTrue (t.PodcastFlag, "Value Set (!False): " + m);
+				}, 3);
+
+				tag.PodcastFlag = false;
+
+				TagTestWithSave (ref tag, delegate (Tag t, string m) {
+					Assert.IsTrue (t.IsEmpty, "Value Cleared (IsEmpty): " + m);
+					Assert.IsFalse (t.PodcastFlag, "Value Cleared (False): " + m);
+				}, 3);
+			}
+		}
+
+		[Test]
+		public void TestPodcastIdentifier ()
+		{
+			var tag = new Tag ();
+
+			// This property isn't supported in version 2.
+			for (byte version = 3; version <= 4; version++) {
+				tag.Version = version;
+
+				TagTestWithSave (ref tag, delegate (Tag t, string m) {
+					Assert.IsTrue (t.IsEmpty, "Initial (IsEmpty): " + m);
+					Assert.IsNull (t.PodcastIdentifier, "Initial (Null): " + m);
+				}, 3);
+
+				tag.PodcastIdentifier = val_sing;
+
+				TagTestWithSave (ref tag, delegate (Tag t, string m) {
+					Assert.IsFalse (t.IsEmpty, "Value Set (!IsEmpty): " + m);
+					Assert.AreEqual (val_sing, t.PodcastIdentifier, "Value Set (!Null): " + m);
+				}, 3);
+
+				tag.PodcastIdentifier = string.Empty;
+
+				TagTestWithSave (ref tag, delegate (Tag t, string m) {
+					Assert.IsTrue (t.IsEmpty, "Value Cleared (IsEmpty): " + m);
+					Assert.IsNull (t.PodcastIdentifier, "Value Cleared (Null): " + m);
+				}, 3);
+			}
+		}
+
+		[Test]
+		public void TestPodcastFeed ()
+		{
+			var tag = new Tag ();
+
+			// This property isn't supported in version 2.
+			for (byte version = 3; version <= 4; version++) {
+				tag.Version = version;
+
+				TagTestWithSave (ref tag, delegate (Tag t, string m) {
+					Assert.IsTrue (t.IsEmpty, "Initial (IsEmpty): " + m);
+					Assert.IsNull (t.PodcastFeed, "Initial (Null): " + m);
+				}, 3);
+
+				tag.PodcastFeed = val_sing;
+
+				TagTestWithSave (ref tag, delegate (Tag t, string m) {
+					Assert.IsFalse (t.IsEmpty, "Value Set (!IsEmpty): " + m);
+					Assert.AreEqual (val_sing, t.PodcastFeed, "Value Set (!Null): " + m);
+				}, 3);
+
+				tag.PodcastFeed = string.Empty;
+
+				TagTestWithSave (ref tag, delegate (Tag t, string m) {
+					Assert.IsTrue (t.IsEmpty, "Value Cleared (IsEmpty): " + m);
+					Assert.IsNull (t.PodcastFeed, "Value Cleared (Null): " + m);
+				}, 3);
+			}
+		}
+
+		[Test]
+		public void TestPodcastDescription ()
+		{
+			var tag = new Tag ();
+
+			// This property isn't supported in version 2.
+			for (byte version = 3; version <= 4; version++) {
+				tag.Version = version;
+
+				TagTestWithSave (ref tag, delegate (Tag t, string m) {
+					Assert.IsTrue (t.IsEmpty, "Initial (IsEmpty): " + m);
+					Assert.IsNull (t.PodcastDescription, "Initial (Null): " + m);
+				}, 3);
+
+				tag.PodcastDescription = val_sing;
+
+				TagTestWithSave (ref tag, delegate (Tag t, string m) {
+					Assert.IsFalse (t.IsEmpty, "Value Set (!IsEmpty): " + m);
+					Assert.AreEqual (val_sing, t.PodcastDescription, "Value Set (!Null): " + m);
+				}, 3);
+
+				tag.PodcastDescription = string.Empty;
+
+				TagTestWithSave (ref tag, delegate (Tag t, string m) {
+					Assert.IsTrue (t.IsEmpty, "Value Cleared (IsEmpty): " + m);
+					Assert.IsNull (t.PodcastDescription, "Value Cleared (Null): " + m);
+				}, 3);
+			}
+		}
+
 		[Test]
 		public void TestIsCompilation ()
 		{
@@ -1078,7 +1198,11 @@ public void TestClear ()
 				Publisher = "L",
 				ISRC = "M",
 				Length = "L",
-				RemixedBy = "N"
+				RemixedBy = "N",
+				PodcastFlag = true,
+				PodcastDescription = "description here",
+				PodcastFeed = "https://example.org/feed.rss",
+				PodcastIdentifier = "unique id"
 			};
 
 
@@ -1109,6 +1233,10 @@ public void TestClear ()
 			Assert.IsNull (tag.ISRC, "ISRC");
 			Assert.IsNull (tag.Length, "Length");
 			Assert.IsNull (tag.RemixedBy, "RemixedBy");
+			Assert.IsFalse (tag.PodcastFlag, "PodcastFlag");
+			Assert.IsNull (tag.PodcastDescription, "PodcastDescription");
+			Assert.IsNull (tag.PodcastFeed, "PodcastFeed");
+			Assert.IsNull (tag.PodcastIdentifier, "PodcastIdentifier");
 		}
 
 		[Test]
@@ -1634,10 +1762,10 @@ public void TestInvolvedPersonsFrame ()
 
 		delegate void TagTestFunc (Tag tag, string msg);
 
-		void TagTestWithSave (ref Tag tag, TagTestFunc testFunc)
+		void TagTestWithSave (ref Tag tag, TagTestFunc testFunc, byte minVersion = 2)
 		{
 			testFunc (tag, "Before Save");
-			for (byte version = 2; version <= 4; version++) {
+			for (byte version = minVersion; version <= 4; version++) {
 				tag.Version = version;
 				tag = new Tag (tag.Render ());
 				testFunc (tag, "After Save, Version: " + version);

src/TaglibSharp/Id3v2/FrameFactory.cs

@@ -289,6 +289,10 @@ public static Frame CreateFrame (ByteVector data, File file, ref int offset, byt
 			// Table of Contents (ID3v2 Chapter Frame Addendum)
 			if (header.FrameId == FrameType.CTOC)
 				return new TableOfContentsFrame (data, position, header, version);
+
+			// Podcast Flag Frame
+			if (header.FrameId == FrameType.PCST)
+				return new PodcastFlagFrame(data, position, header, version);	
 
 			return new UnknownFrame (data, position, header, version);
 		}

src/TaglibSharp/Id3v2/FrameTypes.cs

@@ -101,5 +101,11 @@ static class FrameType
 		public static readonly ReadOnlyByteVector WPUB = "WPUB";
 		public static readonly ReadOnlyByteVector WXXX = "WXXX";
 		public static readonly ReadOnlyByteVector ETCO = "ETCO";
+		public static readonly ReadOnlyByteVector PCST = "PCST"; // Podcast Flag Frame.
+		public static readonly ReadOnlyByteVector TDES = "TDES"; // Podcast Description Frame.
+		public static readonly ReadOnlyByteVector TGID = "TGID"; // Podcast Identifier Frame.
+		public static readonly ReadOnlyByteVector WFED = "WFED"; // Podcast Feed Url Frame.
+		public static readonly ReadOnlyByteVector TCAT = "TCAT"; // Podcast Category Frame.
+		public static readonly ReadOnlyByteVector TKWD = "TKWD"; // Podcast Keywords Frame.
 	}
 }