public static IMediaStreamTrack Create(MediaStreamTrackKind mediaStreamTrackKind, string id,
MediaTrackConstraints constraints = null)
{
Webrtc.MediaStreamTrack nativeMediaStreamTrack = null;
Webrtc.MediaSource nativeMediaSource = null;
switch (mediaStreamTrackKind)
{
case MediaStreamTrackKind.Audio:
var nativeAudioSource = WebRTCme.WebRtc.NativePeerConnectionFactory.CreateAudioSource(
(constraints ?? new MediaTrackConstraints
{
EchoCancellation = new ConstrainBoolean {
Value = false
},
AutoGainControl = new ConstrainBoolean {
Value = false
},
NoiseSuppression = new ConstrainBoolean {
Value = false
}
}).ToNative());
nativeMediaSource = nativeAudioSource;
nativeMediaStreamTrack = WebRTCme.WebRtc.NativePeerConnectionFactory
.CreateAudioTrack(id, nativeAudioSource);
break;
case MediaStreamTrackKind.Video:
var nativeVideoSource = WebRTCme.WebRtc.NativePeerConnectionFactory.CreateVideoSource(false);
nativeMediaSource = nativeVideoSource;
nativeMediaStreamTrack = WebRTCme.WebRtc.NativePeerConnectionFactory
.CreateVideoTrack(id, nativeVideoSource);
break;
}
var mediaStreamTrack = new MediaStreamTrack(nativeMediaStreamTrack);
mediaStreamTrack.SetNativeMediaSource(nativeMediaSource);
return(mediaStreamTrack);
}
public static Webrtc.MediaConstraints ToNative(this MediaTrackConstraints constraints)
{
var mandatoryDictionary = new Dictionary <string, string>();
var optionalDictionary = new Dictionary <string, string>();
mandatoryDictionary.Add("googEchoCancellation", constraints.EchoCancellation.ToBool() ? "true" : "false");
mandatoryDictionary.Add("googAutoGainControl", constraints.AutoGainControl.ToBool() ? "true" : "false");
mandatoryDictionary.Add("googHighpassFilter", "false");
mandatoryDictionary.Add("googNoiseSuppression", constraints.NoiseSuppression.ToBool() ? "true" : "false");
var mandatory = mandatoryDictionary.Select(
pair => new Webrtc.MediaConstraints.KeyValuePair(pair.Key, pair.Value)).ToList();
var optional = optionalDictionary.Select
(pair => new Webrtc.MediaConstraints.KeyValuePair(pair.Key, pair.Value)).ToList();
var nativeConstrains = new Webrtc.MediaConstraints
{
Mandatory = mandatory,
Optional = optional
};
return(nativeConstrains);
}
public static MediaStreamConstraints MakeConstraints(
bool shouldDoThis,
MediaStreamConstraints existingConstraints,
MediaDeviceKind kind,
MediaDevice device
)
{
if (!shouldDoThis)
{
return(existingConstraints);
}
if (null == device)
{
return(existingConstraints);
}
if (null == existingConstraints)
{
existingConstraints = new MediaStreamConstraints();
}
IMediaTrackConstraints trackConstraints = null;
switch (kind)
{
case MediaDeviceKind.AudioInput:
trackConstraints = existingConstraints.Audio;
break;
case MediaDeviceKind.AudioOutput:
trackConstraints = existingConstraints.Audio;
break;
case MediaDeviceKind.VideoInput:
trackConstraints = existingConstraints.Video;
break;
}
if (null == trackConstraints)
{
trackConstraints = new MediaTrackConstraints();
}
var newAdvancedList = new List <MediaTrackConstraintSet>();
if (null == trackConstraints.Advanced)
{
trackConstraints.Advanced = newAdvancedList;
}
var constraintSet = new MediaTrackConstraintSet
{
DeviceId = new ConstrainString
{
Parameters = new ConstrainStringParameters
{
Exact = new StringOrStringList {
Value = device.Id
}
},
Value = new StringOrStringList {
Value = device.Id
}
}
};
newAdvancedList.Add(constraintSet);
trackConstraints.Advanced = newAdvancedList;
switch (kind)
{
case MediaDeviceKind.AudioInput:
existingConstraints.Audio = trackConstraints;
break;
case MediaDeviceKind.AudioOutput:
existingConstraints.Audio = trackConstraints;
break;
case MediaDeviceKind.VideoInput:
existingConstraints.Video = trackConstraints;
break;
}
return(existingConstraints);
}
