Add pagination and fixes

This commit is contained in:
cvium
2022-01-16 22:10:22 +01:00
parent 70751722d2
commit 90736ee346
4 changed files with 60 additions and 23 deletions

View File

@@ -106,7 +106,7 @@ internal static class EbmlReaderExtensions
if (!tracksPosition.HasValue || !cuesPosition.HasValue || !infoPosition.HasValue)
{
throw new InvalidOperationException("SeekHead is missing or does not contain Info, Tracks and Cues positions");
throw new InvalidOperationException("SeekHead is missing or does not contain Info, Tracks and Cues positions. SeekHead referencing another SeekHead is not supported");
}
return new SeekHead(infoPosition.Value, tracksPosition.Value, cuesPosition.Value);

View File

@@ -2,6 +2,7 @@
using System.Collections.Generic;
using System.IO;
using Jellyfin.MediaEncoding.Keyframes.Matroska.Extensions;
using Jellyfin.MediaEncoding.Keyframes.Matroska.Models;
using NEbml.Core;
namespace Jellyfin.MediaEncoding.Keyframes.Matroska;
@@ -22,8 +23,19 @@ public static class MatroskaKeyframeExtractor
using var reader = new EbmlReader(stream);
var seekHead = reader.ReadSeekHead();
var info = reader.ReadInfo(seekHead.InfoPosition);
var videoTrackNumber = reader.FindFirstTrackNumberByType(seekHead.TracksPosition, MatroskaConstants.TrackTypeVideo);
// External lib does not support seeking backwards (yet)
Info info;
ulong videoTrackNumber;
if (seekHead.InfoPosition < seekHead.TracksPosition)
{
info = reader.ReadInfo(seekHead.InfoPosition);
videoTrackNumber = reader.FindFirstTrackNumberByType(seekHead.TracksPosition, MatroskaConstants.TrackTypeVideo);
}
else
{
videoTrackNumber = reader.FindFirstTrackNumberByType(seekHead.TracksPosition, MatroskaConstants.TrackTypeVideo);
info = reader.ReadInfo(seekHead.InfoPosition);
}
var keyframes = new List<long>();
reader.ReadAt(seekHead.CuesPosition);