Stream GetBufferingStream(string streamUrl)
{
var memoryStream = new DualStream();
Task.Run(() => {
int byteCounter = 0;
try {
var webClient = new WebClient();
var networkStream = webClient.OpenRead(streamUrl);
if (networkStream == null)
{
return;
}
byte[] buffer = new byte[0x1000];
while (true)
{
int read = networkStream.Read(buffer, 0, buffer.Length);
if (read <= 0)
{
break;
}
byteCounter += read;
totalSourceBytes += read;
memoryStream.Write(buffer, 0, read);
}
} catch (Exception ex) {
Console.WriteLine("Exception while reading network stream: " + ex);
}
NetworkDone = true; Console.WriteLine("net: done. ({0} read)", byteCounter);
});
return(memoryStream);
}
public void Start()
{
Task.Run(async() => {
// Wait for some data to arrive
while (true)
{
if (streamRequest.NetworkDone)
{
break;
}
if (bufferingStream.Length > 1024 * 3)
{
break;
}
await Task.Delay(100);
}
Stream input, pcmOutput;
var ffmpegProcess = GetTranscoderStreams(out input, out pcmOutput);
PCMOutput = new DualStream();
// Keep pumping network stuff into the transcoder
transcoderTask = Task.Run(() => TranscoderFunc(bufferingStream, input, tokenSource.Token), tokenSource.Token);
// Keep pumping transcoder output into the PCMOutput stream
outputTask = Task.Run(() => OutputFunc(pcmOutput, PCMOutput, tokenSource.Token), tokenSource.Token);
// Wait until network stuff is all done
while (!streamRequest.NetworkDone)
{
await Task.Delay(200);
}
// Then wait until we sent everything to the transcoder
while (BytesSentToTranscoder < streamRequest.TotalSourceBytes)
{
await Task.Delay(200);
}
// Then wait some more until it did everything and kill it
await Task.Delay(5000);
try {
tokenSource.Cancel();
bufferingStream.Close();
Console.WriteLine("Killing transcoder...");
ffmpegProcess.Kill();
} catch {
}
});
}
static async Task OutputFunc(Stream sourceStream, DualStream targetBuffer, CancellationToken cancellationToken)
{
try {
byte[] buffer = new byte[1024];
while (!cancellationToken.IsCancellationRequested)
{
// When there is new stuff available on the network we want to get it instantly
int read = await sourceStream.ReadAsync(buffer, 0, buffer.Length, cancellationToken);
if (read > 0)
{
targetBuffer.Write(buffer, 0, read);
}
}
} catch (Exception ex) {
Console.WriteLine(ex.ToString());
}
Console.WriteLine("OutputFunc stopped");
}
Stream GetBufferingStream(string streamUrl) {
var memoryStream = new DualStream();
Task.Run(() => {
int byteCounter = 0;
try {
var webClient = new WebClient();
var networkStream = webClient.OpenRead(streamUrl);
if (networkStream == null) return;
byte[] buffer = new byte[0x1000];
while (true) {
int read = networkStream.Read(buffer, 0, buffer.Length);
if (read <= 0) break;
byteCounter += read;
totalSourceBytes += read;
memoryStream.Write(buffer, 0, read);
}
} catch (Exception ex) {
Console.WriteLine("Exception while reading network stream: " + ex);
}
NetworkDone = true; Console.WriteLine("net: done. ({0} read)", byteCounter);
});
return memoryStream;
}