FakePlaybackSession class
A PlaybackSession that never opens an audio device.
The playhead moves when a test calls advance, and not when a device consumes frames. This makes the timing exact instead of merely likely. FakeCaptureSession makes the same bargain for the frame stream.
This fake answers the same way as the real session at each point where a host can see the difference. position never goes past duration. It never moves backward, except on a seek. It answers after dispose and does not throw.
- Implemented types
Constructors
- FakePlaybackSession({required WaveformDocument document, int sampleRate = 44100})
Properties
- document ↔ WaveformDocument
-
This field is mutable, like the rest of this fake. setDocument assigns
it, and a test can also set it directly to stage an initial state.
getter/setter pairoverride-getter
-
documents
→ List<
WaveformDocument> -
Every document that setDocument received, in order.
final
- duration → Duration
-
The length of the whole document, at the sample rate of the source.
no setteroverride
- hashCode → int
-
The hash code for this object.
no setterinherited
- isFinished → bool
-
Whether the playhead reached the end of the document.
no setteroverride
- isPlaying → bool
-
no setteroverride
- nextPlayError ↔ Object?
-
If a test sets this field, play throws it.
getter/setter pair
- pauseCount ↔ int
-
getter/setter pair
- playCount ↔ int
-
getter/setter pair
- position → Duration
-
The position of the playhead.
no setteroverride
- runtimeType → Type
-
A representation of the runtime type of the object.
no setterinherited
- sampleRate → int
-
The rate that duration and position use.
final
-
seeks
→ List<
Duration> -
Every seek requested, in order.
final
- underrunCount ↔ int
-
What underruns reports.
getter/setter pair
- underruns → int
-
Frames of silence that the session gave the device because the feeder was
too slow.
no setteroverride
Methods
-
advance(
Duration by) → void - Moves the playhead, as a device that consumes frames does. The playhead stops at the end.
-
dispose(
) → Future< void> -
override
-
noSuchMethod(
Invocation invocation) → dynamic -
Invoked when a nonexistent method or property is accessed.
inherited
-
pause(
) → Future< void> -
override
-
play(
) → Future< void> -
override
-
seek(
Duration position) → Future< void> -
Moves the playhead.
override
-
setDocument(
WaveformDocument document) → Future< void> -
Swaps the document under an active session.
override
-
toString(
) → String -
A string representation of this object.
inherited
Operators
-
operator ==(
Object other) → bool -
The equality operator.
inherited