/// <summary>
/// Create a Producer.
/// </summary>
public async Task <Producer> ProduceAsync(ProducerOptions producerOptions)
{
_logger.LogDebug("ProduceAsync()");
if (!producerOptions.Id.IsNullOrWhiteSpace() && Producers.ContainsKey(producerOptions.Id !))
{
throw new Exception($"a Producer with same id \"{ producerOptions.Id }\" already exists");
}
// This may throw.
ORTC.ValidateRtpParameters(producerOptions.RtpParameters);
// If missing or empty encodings, add one.
// TODO: (alby)注意检查这样做是否合适
// 在 mediasoup-worker 中，要求 Encodings 至少要有一个元素。
if (producerOptions.RtpParameters.Encodings.IsNullOrEmpty())
{
producerOptions.RtpParameters.Encodings = new List <RtpEncodingParameters>
{
new RtpEncodingParameters()
};
}
// Don't do this in PipeTransports since there we must keep CNAME value in
// each Producer.
// TODO: (alby)不好的模式
if (GetType() != typeof(PipeTransport))
{
// If CNAME is given and we don't have yet a CNAME for Producers in this
// Transport, take it.
if (_cnameForProducers.IsNullOrWhiteSpace() && producerOptions.RtpParameters.Rtcp != null && !producerOptions.RtpParameters.Rtcp.CNAME.IsNullOrWhiteSpace())
{
_cnameForProducers = producerOptions.RtpParameters.Rtcp.CNAME;
}
// Otherwise if we don't have yet a CNAME for Producers and the RTP parameters
// do not include CNAME, create a random one.
else if (_cnameForProducers.IsNullOrWhiteSpace())
{
_cnameForProducers = Guid.NewGuid().ToString().Substring(0, 8);
}
// Override Producer's CNAME.
// TODO: (alby)注意检查这样做是否合适
producerOptions.RtpParameters.Rtcp = producerOptions.RtpParameters.Rtcp ?? new RtcpParameters();
producerOptions.RtpParameters.Rtcp.CNAME = _cnameForProducers;
}
var routerRtpCapabilities = GetRouterRtpCapabilities();
// This may throw.
var rtpMapping = ORTC.GetProducerRtpParametersMapping(producerOptions.RtpParameters, routerRtpCapabilities);
// This may throw.
var consumableRtpParameters = ORTC.GetConsumableRtpParameters(producerOptions.Kind, producerOptions.RtpParameters, routerRtpCapabilities, rtpMapping);
var @internal = new ProducerInternalData
(
Internal.RouterId,
Internal.TransportId,
producerOptions.Id.IsNullOrWhiteSpace() ? Guid.NewGuid().ToString() : producerOptions.Id !
);
var reqData = new
{
producerOptions.Kind,
producerOptions.RtpParameters,
RtpMapping = rtpMapping,
producerOptions.KeyFrameRequestDelay,
producerOptions.Paused,
};
var status = await Channel.RequestAsync(MethodId.TRANSPORT_PRODUCE, @internal, reqData);
var responseData = JsonConvert.DeserializeObject <TransportProduceResponseData>(status);
var data = new
{
producerOptions.Kind,
producerOptions.RtpParameters,
responseData.Type,
ConsumableRtpParameters = consumableRtpParameters
};
var producer = new Producer(_loggerFactory,
@internal,
data.Kind,
data.RtpParameters,
data.Type,
data.ConsumableRtpParameters,
Channel,
AppData,
producerOptions.Paused !.Value);
Producers[producer.Internal.ProducerId] = producer;
producer.On("@close", _ =>
{
Producers.Remove(producer.Internal.ProducerId);
Emit("@producerclose", producer);
});
Emit("@newproducer", producer);
// Emit observer event.
Observer.Emit("newproducer", producer);
return(producer);
}
/// <summary>
/// Create a Producer.
/// </summary>
public override Task <Producer> ProduceAsync(ProducerOptions producerOptions)
{
_logger.LogDebug("ProduceAsync()");
throw new NotImplementedException("ProduceAsync() not implemented in DirectTransport");
}