public async Task Play(
[FromOptionalArgument] string streamName,
[FromOptionalArgument] double start = -1,
[FromOptionalArgument] double duration = -1,
[FromOptionalArgument] bool reset = false)
{
_recordFile = new FileStream(_recordService.GetRecordFilename(streamName) + ".flv", FileMode.Open, FileAccess.Read);
await FlvDemuxer.AttachStream(_recordFile);
var resetData = new AmfObject
{
{ "level", "status" },
{ "code", "NetStream.Play.Reset" },
{ "description", "Resetting and playing stream." },
{ "details", streamName }
};
var resetStatus = RtmpSession.CreateCommandMessage <OnStatusCommandMessage>();
resetStatus.InfoObject = resetData;
await MessageStream.SendMessageAsync(ChunkStream, resetStatus);
var startData = new AmfObject
{
{ "level", "status" },
{ "code", "NetStream.Play.Start" },
{ "description", "Started playing." },
{ "details", streamName }
};
var startStatus = RtmpSession.CreateCommandMessage <OnStatusCommandMessage>();
startStatus.InfoObject = startData;
await MessageStream.SendMessageAsync(ChunkStream, startStatus);
var bandwidthLimit = new WindowAcknowledgementSizeMessage()
{
WindowSize = 500 * 1024
};
await RtmpSession.ControlMessageStream.SendMessageAsync(RtmpSession.ControlChunkStream, bandwidthLimit);
VideoChunkStream = RtmpSession.CreateChunkStream();
AudioChunkStream = RtmpSession.CreateChunkStream();
var cts = new CancellationTokenSource();
_playCts?.Dispose();
_playCts = cts;
start = Math.Max(start, 0);
await SeekAndPlay(start / 1000, cts.Token);
}
private async Task SeekAndPlay(double milliSeconds, CancellationToken ct)
{
await _playLock.WaitAsync();
Interlocked.Exchange(ref _playing, 1);
try
{
_recordFile.Seek(9, SeekOrigin.Begin);
FlvDemuxer.SeekNoLock(milliSeconds, _metaData == null ? null : _metaData.Data[2] as Dictionary <string, object>, ct);
await StartPlayNoLock(ct);
}
catch (Exception e)
{
Console.WriteLine(e);
}
finally
{
Interlocked.Exchange(ref _playing, 0);
_playLock.Release();
}
}
private async void HandleVideoMessage(VideoMessage message)
{
try
{
_currentTimestamp = Math.Max(_currentTimestamp, message.MessageHeader.Timestamp);
var head = message.Data.Span[0];
var data = FlvDemuxer.DemultiplexVideoData(message);
if (data.FrameType == FrameType.KeyFrame)
{
_keyframeTimes.Add((double)message.MessageHeader.Timestamp / 1000);
_keyframeFilePositions.Add((double)_recordFileData.Position);
}
await SaveMessage(message);
}
catch
{
RtmpSession.Close();
}
}
private Task <Message> ReadMessage(CancellationToken ct)
{
return(FlvDemuxer.DemultiplexFlvAsync(ct));
}