MediaTrackSupportedConstraints class
The dictionary establishes the list of constrainable properties
recognized by the user agent or browser in its implementation of
the MediaStreamTrack object. An object conforming to is
returned by MediaDevices.getSupportedConstraints().
Because of the way interface definitions in WebIDL work, if a
constraint is requested but not supported, no error will occur.
Instead, the specified constraints will be applied, with any
unrecognized constraints stripped from the request.That can lead
to confusing and hard to debug errors, so be sure to use
getSupportedConstraints() to retrieve this information before
attempting to establish constraints if you need to know the
difference between silently ignoring a constraint and a
constraint being accepted.
An actual constraint set is described using an object based on
the MediaTrackConstraints dictionary.
To learn more about how constraints work, see Capabilities,
constraints, and settings.
- Available extensions
- Annotations
-
- @anonymous
- @JS()
- @staticInterop
Constructors
- MediaTrackSupportedConstraints({bool? width, bool? height, bool? aspectRatio, bool? frameRate, bool? facingMode, bool? resizeMode, bool? sampleRate, bool? sampleSize, bool? echoCancellation, bool? autoGainControl, bool? noiseSuppression, bool? latency, bool? channelCount, bool? deviceId, bool? groupId})
-
factory
Properties
- aspectRatio ↔ bool
-
Available on MediaTrackSupportedConstraints, provided by the PropsMediaTrackSupportedConstraints extension
getter/setter pair - autoGainControl ↔ bool
-
Available on MediaTrackSupportedConstraints, provided by the PropsMediaTrackSupportedConstraints extension
getter/setter pair - channelCount ↔ bool
-
Available on MediaTrackSupportedConstraints, provided by the PropsMediaTrackSupportedConstraints extension
getter/setter pair - deviceId ↔ bool
-
Available on MediaTrackSupportedConstraints, provided by the PropsMediaTrackSupportedConstraints extension
getter/setter pair - echoCancellation ↔ bool
-
Available on MediaTrackSupportedConstraints, provided by the PropsMediaTrackSupportedConstraints extension
getter/setter pair - facingMode ↔ bool
-
Available on MediaTrackSupportedConstraints, provided by the PropsMediaTrackSupportedConstraints extension
getter/setter pair - frameRate ↔ bool
-
Available on MediaTrackSupportedConstraints, provided by the PropsMediaTrackSupportedConstraints extension
getter/setter pair - groupId ↔ bool
-
Available on MediaTrackSupportedConstraints, provided by the PropsMediaTrackSupportedConstraints extension
getter/setter pair - hashCode → int
-
The hash code for this object.
no setterinherited
- height ↔ bool
-
Available on MediaTrackSupportedConstraints, provided by the PropsMediaTrackSupportedConstraints extension
getter/setter pair - latency ↔ bool
-
Available on MediaTrackSupportedConstraints, provided by the PropsMediaTrackSupportedConstraints extension
getter/setter pair - noiseSuppression ↔ bool
-
Available on MediaTrackSupportedConstraints, provided by the PropsMediaTrackSupportedConstraints extension
getter/setter pair - resizeMode ↔ bool
-
Available on MediaTrackSupportedConstraints, provided by the PropsMediaTrackSupportedConstraints extension
getter/setter pair - runtimeType → Type
-
A representation of the runtime type of the object.
no setterinherited
- sampleRate ↔ bool
-
Available on MediaTrackSupportedConstraints, provided by the PropsMediaTrackSupportedConstraints extension
getter/setter pair - sampleSize ↔ bool
-
Available on MediaTrackSupportedConstraints, provided by the PropsMediaTrackSupportedConstraints extension
getter/setter pair - width ↔ bool
-
Available on MediaTrackSupportedConstraints, provided by the PropsMediaTrackSupportedConstraints extension
getter/setter pair
Methods
-
noSuchMethod(
Invocation invocation) → dynamic -
Invoked when a nonexistent method or property is accessed.
inherited
-
toString(
) → String -
A string representation of this object.
inherited
Operators
-
operator ==(
Object other) → bool -
The equality operator.
inherited