public static SmoothStreamingMediaStreamIndex GenerateClientManifestStreamIndex(ManifestTrack track, Box moov)
{
var streamIndex = new SmoothStreamingMediaStreamIndex();
streamIndex.Type = track.Type.ToString().ToLower();
var qualityLevel = new SmoothStreamingMediaStreamIndexQualityLevel();
streamIndex.QualityLevel.Add(qualityLevel);
streamIndex.TimeScale = track.TimeScale;
var mdhd = moov.InnerBoxes.Single(box =>
box.Type == BoxType.Trak
&& (box.InnerBoxes.Single(tkhd => tkhd.Type == BoxType.Tkhd) as TrackHeaderFullBox).TrackId == track.Id)
.InnerBoxes.Single(box => box.Type == BoxType.Mdia)
.InnerBoxes.Single(box => box.Type == BoxType.Mdhd) as MediaHeaderFullBox;
streamIndex.Language = mdhd.Language;
switch (track.Type)
{
case ManifestTrackType.Video:
//populate track
streamIndex.MaxHeight = track.Height;
streamIndex.MaxWidth = track.Width;
streamIndex.DisplayWidth = track.DisplayWidth;
streamIndex.DisplayHeight = track.DisplayHeight;
//populate quality level
qualityLevel.Index = 0;
qualityLevel.Bitrate = track.Bitrate;
qualityLevel.FourCC = track.FourCodecCode;
qualityLevel.MaxHeight = track.Height;
qualityLevel.MaxWidth = track.Width;
qualityLevel.CodecPrivateData = track.CodecPrivateData;
break;
case ManifestTrackType.Audio:
streamIndex.FourCC = track.FourCodecCode;
streamIndex.Index = 0;
//populate quality level
qualityLevel.Bitrate = track.Bitrate;
qualityLevel.SamplingRate = track.SampleRate;
qualityLevel.Channels = track.ChannelCount;
qualityLevel.BitsPerSample = track.SampleSize;
qualityLevel.PacketSize = track.PacketSize;
qualityLevel.AudioTag = track.AudioTag;
qualityLevel.CodecPrivateData = track.CodecPrivateData;
qualityLevel.FourCC = track.FourCodecCode;
break;
case ManifestTrackType.Text:
int i = 0;
i++;
break;
}
if (track.Fragments != null)
{
streamIndex.c.AddRange(GenerateClientManifestChunks(track, moov));
streamIndex.Chunks = (uint)streamIndex.c.Count;
}
return streamIndex;
}
private static IEnumerable<KeyValuePair<string, ChunkLocation>> GetChunkLookups(SmoothStreamingMediaStreamIndex streamIndex, SmoothStreamingMediaStreamIndexQualityLevel track, Uri chunkUri, SegmentIndexBox sidx)
{
int i = 0;
ulong byteOffset = sidx.FirstOffset;
ulong timeOffset = 0;
foreach (var c in streamIndex.c)
{
var subsegment = sidx.Subsegments[i];
// create a lookup table for each chunk
var key = "/" + streamIndex.Url
.Replace("{bitrate}", track.Bitrate.ToString())
.Replace("{start time}", timeOffset.ToString());
var location = new ChunkLocation()
{
Uri = chunkUri,
From = byteOffset,
To = byteOffset += subsegment.ReferencedSize
};
yield return new KeyValuePair<string, ChunkLocation>(key, location);
timeOffset += subsegment.Duration;
i++;
}
}
public static SmoothStreamingMediaStreamIndex GenerateClientManifestStreamIndex(ManifestTrack track, Box moov)
{
var streamIndex = new SmoothStreamingMediaStreamIndex();
streamIndex.Type = track.Type.ToString().ToLower();
var qualityLevel = new SmoothStreamingMediaStreamIndexQualityLevel();
streamIndex.QualityLevel.Add(qualityLevel);
streamIndex.TimeScale = track.TimeScale;
var mdhd = moov.InnerBoxes.Single(box =>
box.Type == BoxType.Trak &&
(box.InnerBoxes.Single(tkhd => tkhd.Type == BoxType.Tkhd) as TrackHeaderFullBox).TrackId == track.Id)
.InnerBoxes.Single(box => box.Type == BoxType.Mdia)
.InnerBoxes.Single(box => box.Type == BoxType.Mdhd) as MediaHeaderFullBox;
streamIndex.Language = mdhd.Language;
switch (track.Type)
{
case ManifestTrackType.Video:
//populate track
streamIndex.MaxHeight = track.Height;
streamIndex.MaxWidth = track.Width;
streamIndex.DisplayWidth = track.DisplayWidth;
streamIndex.DisplayHeight = track.DisplayHeight;
//populate quality level
qualityLevel.Index = 0;
qualityLevel.Bitrate = track.Bitrate;
qualityLevel.FourCC = track.FourCodecCode;
qualityLevel.MaxHeight = track.Height;
qualityLevel.MaxWidth = track.Width;
qualityLevel.CodecPrivateData = track.CodecPrivateData;
break;
case ManifestTrackType.Audio:
streamIndex.FourCC = track.FourCodecCode;
streamIndex.Index = 0;
//populate quality level
qualityLevel.Bitrate = track.Bitrate;
qualityLevel.SamplingRate = track.SampleRate;
qualityLevel.Channels = track.ChannelCount;
qualityLevel.BitsPerSample = track.SampleSize;
qualityLevel.PacketSize = track.PacketSize;
qualityLevel.AudioTag = track.AudioTag;
qualityLevel.CodecPrivateData = track.CodecPrivateData;
qualityLevel.FourCC = track.FourCodecCode;
break;
case ManifestTrackType.Text:
int i = 0;
i++;
break;
}
if (track.Fragments != null)
{
streamIndex.c.AddRange(GenerateClientManifestChunks(track, moov));
streamIndex.Chunks = (uint)streamIndex.c.Count;
}
return(streamIndex);
}
