Add first draft of keyframe extraction for Matroska

1 files changed, 31 insertions, 0 deletions

diff --git a/src/Jellyfin.MediaEncoding.Keyframes/Matroska/MatroskaConstants.cs b/src/Jellyfin.MediaEncoding.Keyframes/Matroska/MatroskaConstants.cs
new file mode 100644
index 000000000..d18418d45
--- /dev/null
+++ b/src/Jellyfin.MediaEncoding.Keyframes/Matroska/MatroskaConstants.cs
@@ -0,0 +1,31 @@
+namespace Jellyfin.MediaEncoding.Keyframes.Matroska
+{
+    /// <summary>
+    /// Constants for the Matroska identifiers.
+    /// </summary>
+    public static class MatroskaConstants
+    {
+        internal const ulong SegmentContainer = 0x18538067;
+
+        internal const ulong SeekHead = 0x114D9B74;
+        internal const ulong Seek = 0x4DBB;
+
+        internal const ulong Info = 0x1549A966;
+        internal const ulong TimestampScale = 0x2AD7B1;
+        internal const ulong Duration = 0x4489;
+
+        internal const ulong Tracks = 0x1654AE6B;
+        internal const ulong TrackEntry = 0xAE;
+        internal const ulong TrackNumber = 0xD7;
+        internal const ulong TrackType = 0x83;
+
+        internal const ulong TrackTypeVideo = 0x1;
+        internal const ulong TrackTypeSubtitle = 0x11;
+
+        internal const ulong Cues = 0x1C53BB6B;
+        internal const ulong CueTime = 0xB3;
+        internal const ulong CuePoint = 0xBB;
+        internal const ulong CueTrackPositions = 0xB7;
+        internal const ulong CuePointTrackNumber = 0xF7;
+    }
+}