public override Tag ReadTag()
{
var bytes = FlvReader._binaryReader.ReadBytes(4);
if (bytes.Length == 0)
{
return(null);
}
if (bytes.Length != 4)
{
throw new InvalidOperationException(string.Format("Tag consists of at least 11 bytes, but only {0} bytes were read from Stream.", bytes.Length));
}
var payloadSize = new UInt24(bytes.Skip(1).Take(3), Endianness.BigEndian);
var numberOfAdditionalBytesToRead = 7 + (int)payloadSize.Value;
var additionalBytes = FlvReader._binaryReader.ReadBytes(numberOfAdditionalBytesToRead);
if (additionalBytes.Length != numberOfAdditionalBytesToRead)
{
throw new InvalidOperationException(string.Format("Tag consists of {0} bytes, but only {1} bytes were read from Stream.",
bytes.Length + numberOfAdditionalBytesToRead,
bytes.Length + additionalBytes.Length));
}
FlvReader.MoveToBeforeBackpointerState();
return(new Tag(bytes.Concat(additionalBytes).ToArray()));
}
protected FlvReaderState(FlvReader flvReader)
{
if (flvReader == null)
{
throw new ArgumentNullException("flvReader");
}
FlvReader = flvReader;
}
public override Backpointer ReadBackpointer()
{
var bytes = FlvReader._binaryReader.ReadBytes(4);
if (bytes.Length != 4)
{
throw new InvalidOperationException(string.Format("Backpointer consists of 4 bytes, but only {0} bytes were read from Stream.", bytes.Length));
}
FlvReader.MoveToBeforeTagState();
return(new Backpointer(bytes));
}
public BeforeTagState(FlvReader flvReader) : base(flvReader)
{
}
public BeforeHeaderState(FlvReader flvReader) : base(flvReader)
{
}
public BeforeBackpointerState(FlvReader flvReader) : base(flvReader)
{
}
protected FlvReaderState(FlvReader flvReader)
{
if (flvReader == null) throw new ArgumentNullException("flvReader");
FlvReader = flvReader;
}
public BeforeTagState(FlvReader flvReader)
: base(flvReader)
{
}
public BeforeHeaderState(FlvReader flvReader)
: base(flvReader)
{
}
public BeforeBackpointerState(FlvReader flvReader)
: base(flvReader)
{
}
public void Download(string path)
{
if (path == null) throw new ArgumentNullException("path");
var drNuRtmpStream = _drNuRtmpStreamFactory.CreateDrNuRtmpStream(RtmpUri);
drNuRtmpStream.Duration += (sender, args) => OnDuration(args);
drNuRtmpStream.Elapsed += (sender, args) => OnElapsed(args);
using (var flvReader = new FlvReader(drNuRtmpStream))
using (var flvWriter = new FlvWriter(_fileWrapper.Create(path)))
{
IFlvPart flvPart;
while ((flvPart = flvReader.Read()) != null)
{
flvWriter.Write(flvPart);
}
}
}