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Current File : //proc/self/root/usr/local/lib/node_modules/mediasoup/src/Producer.ts
import { Logger } from './Logger';
import { EnhancedEventEmitter } from './EnhancedEventEmitter';
import { Channel } from './Channel';
import { PayloadChannel } from './PayloadChannel';
import { MediaKind, RtpParameters } from './RtpParameters';
export type ProducerOptions =
{
/**
* Producer id (just for Router.pipeToRouter() method).
*/
id?: string;
/**
* Media kind ('audio' or 'video').
*/
kind: MediaKind;
/**
* RTP parameters defining what the endpoint is sending.
*/
rtpParameters: RtpParameters;
/**
* Whether the producer must start in paused mode. Default false.
*/
paused?: boolean;
/**
* Just for video. Time (in ms) before asking the sender for a new key frame
* after having asked a previous one. Default 0.
*/
keyFrameRequestDelay?: number;
/**
* Custom application data.
*/
appData?: any;
}
/**
* Valid types for 'trace' event.
*/
export type ProducerTraceEventType = 'rtp' | 'keyframe' | 'nack' | 'pli' | 'fir';
/**
* 'trace' event data.
*/
export type ProducerTraceEventData =
{
/**
* Trace type.
*/
type: ProducerTraceEventType;
/**
* Event timestamp.
*/
timestamp: number;
/**
* Event direction.
*/
direction: 'in' | 'out';
/**
* Per type information.
*/
info: any;
}
export type ProducerScore =
{
/**
* SSRC of the RTP stream.
*/
ssrc: number;
/**
* RID of the RTP stream.
*/
rid?: string;
/**
* The score of the RTP stream.
*/
score: number;
}
export type ProducerVideoOrientation =
{
/**
* Whether the source is a video camera.
*/
camera: boolean;
/**
* Whether the video source is flipped.
*/
flip: boolean;
/**
* Rotation degrees (0, 90, 180 or 270).
*/
rotation: number;
}
export type ProducerStat =
{
// Common to all RtpStreams.
type: string;
timestamp: number;
ssrc: number;
rtxSsrc?: number;
rid?: string;
kind: string;
mimeType: string;
packetsLost: number;
fractionLost: number;
packetsDiscarded: number;
packetsRetransmitted: number;
packetsRepaired: number;
nackCount: number;
nackPacketCount: number;
pliCount: number;
firCount: number;
score: number;
packetCount: number;
byteCount: number;
bitrate: number;
roundTripTime?: number;
// RtpStreamRecv specific.
jitter: number;
bitrateByLayer?: any;
}
/**
* Producer type.
*/
export type ProducerType = 'simple' | 'simulcast' | 'svc';
const logger = new Logger('Producer');
export class Producer extends EnhancedEventEmitter
{
// Internal data.
private readonly _internal:
{
routerId: string;
transportId: string;
producerId: string;
};
// Producer data.
private readonly _data:
{
kind: MediaKind;
rtpParameters: RtpParameters;
type: ProducerType;
consumableRtpParameters: RtpParameters;
};
// Channel instance.
private readonly _channel: Channel;
// PayloadChannel instance.
private readonly _payloadChannel: PayloadChannel;
// Closed flag.
private _closed = false;
// Custom app data.
private readonly _appData?: any;
// Paused flag.
private _paused = false;
// Current score.
private _score: ProducerScore[] = [];
// Observer instance.
private readonly _observer = new EnhancedEventEmitter();
/**
* @private
* @emits transportclose
* @emits score - (score: ProducerScore[])
* @emits videoorientationchange - (videoOrientation: ProducerVideoOrientation)
* @emits trace - (trace: ProducerTraceEventData)
* @emits @close
*/
constructor(
{
internal,
data,
channel,
payloadChannel,
appData,
paused
}:
{
internal: any;
data: any;
channel: Channel;
payloadChannel: PayloadChannel;
appData?: any;
paused: boolean;
}
)
{
super();
logger.debug('constructor()');
this._internal = internal;
this._data = data;
this._channel = channel;
this._payloadChannel = payloadChannel;
this._appData = appData;
this._paused = paused;
this._handleWorkerNotifications();
}
/**
* Producer id.
*/
get id(): string
{
return this._internal.producerId;
}
/**
* Whether the Producer is closed.
*/
get closed(): boolean
{
return this._closed;
}
/**
* Media kind.
*/
get kind(): MediaKind
{
return this._data.kind;
}
/**
* RTP parameters.
*/
get rtpParameters(): RtpParameters
{
return this._data.rtpParameters;
}
/**
* Producer type.
*/
get type(): ProducerType
{
return this._data.type;
}
/**
* Consumable RTP parameters.
*
* @private
*/
get consumableRtpParameters(): RtpParameters
{
return this._data.consumableRtpParameters;
}
/**
* Whether the Producer is paused.
*/
get paused(): boolean
{
return this._paused;
}
/**
* Producer score list.
*/
get score(): ProducerScore[]
{
return this._score;
}
/**
* App custom data.
*/
get appData(): any
{
return this._appData;
}
/**
* Invalid setter.
*/
set appData(appData: any) // eslint-disable-line no-unused-vars
{
throw new Error('cannot override appData object');
}
/**
* Observer.
*
* @emits close
* @emits pause
* @emits resume
* @emits score - (score: ProducerScore[])
* @emits videoorientationchange - (videoOrientation: ProducerVideoOrientation)
* @emits trace - (trace: ProducerTraceEventData)
*/
get observer(): EnhancedEventEmitter
{
return this._observer;
}
/**
* Close the Producer.
*/
close(): void
{
if (this._closed)
return;
logger.debug('close()');
this._closed = true;
// Remove notification subscriptions.
this._channel.removeAllListeners(this._internal.producerId);
this._payloadChannel.removeAllListeners(this._internal.producerId);
this._channel.request('producer.close', this._internal)
.catch(() => {});
this.emit('@close');
// Emit observer event.
this._observer.safeEmit('close');
}
/**
* Transport was closed.
*
* @private
*/
transportClosed(): void
{
if (this._closed)
return;
logger.debug('transportClosed()');
this._closed = true;
// Remove notification subscriptions.
this._channel.removeAllListeners(this._internal.producerId);
this._payloadChannel.removeAllListeners(this._internal.producerId);
this.safeEmit('transportclose');
// Emit observer event.
this._observer.safeEmit('close');
}
/**
* Dump Producer.
*/
async dump(): Promise<any>
{
logger.debug('dump()');
return this._channel.request('producer.dump', this._internal);
}
/**
* Get Producer stats.
*/
async getStats(): Promise<ProducerStat[]>
{
logger.debug('getStats()');
return this._channel.request('producer.getStats', this._internal);
}
/**
* Pause the Producer.
*/
async pause(): Promise<void>
{
logger.debug('pause()');
const wasPaused = this._paused;
await this._channel.request('producer.pause', this._internal);
this._paused = true;
// Emit observer event.
if (!wasPaused)
this._observer.safeEmit('pause');
}
/**
* Resume the Producer.
*/
async resume(): Promise<void>
{
logger.debug('resume()');
const wasPaused = this._paused;
await this._channel.request('producer.resume', this._internal);
this._paused = false;
// Emit observer event.
if (wasPaused)
this._observer.safeEmit('resume');
}
/**
* Enable 'trace' event.
*/
async enableTraceEvent(types: ProducerTraceEventType[] = []): Promise<void>
{
logger.debug('enableTraceEvent()');
const reqData = { types };
await this._channel.request(
'producer.enableTraceEvent', this._internal, reqData);
}
/**
* Send RTP packet (just valid for Producers created on a DirectTransport).
*/
send(rtpPacket: Buffer)
{
if (!Buffer.isBuffer(rtpPacket))
{
throw new TypeError('rtpPacket must be a Buffer');
}
this._payloadChannel.notify(
'producer.send', this._internal, undefined, rtpPacket);
}
private _handleWorkerNotifications(): void
{
this._channel.on(this._internal.producerId, (event: string, data?: any) =>
{
switch (event)
{
case 'score':
{
const score = data as ProducerScore[];
this._score = score;
this.safeEmit('score', score);
// Emit observer event.
this._observer.safeEmit('score', score);
break;
}
case 'videoorientationchange':
{
const videoOrientation = data as ProducerVideoOrientation;
this.safeEmit('videoorientationchange', videoOrientation);
// Emit observer event.
this._observer.safeEmit('videoorientationchange', videoOrientation);
break;
}
case 'trace':
{
const trace = data as ProducerTraceEventData;
this.safeEmit('trace', trace);
// Emit observer event.
this._observer.safeEmit('trace', trace);
break;
}
default:
{
logger.error('ignoring unknown event "%s"', event);
}
}
});
}
}
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