public void Scale_from_same_is_idempotent()
{
var scaler = new FramerateScaler <string>(30, 30, _originalFrames);
Assert.AreEqual(scaler.InputDuration, scaler.OutputDuration);
Assert.AreEqual(_originalFrames.Count, scaler.Count());
Assert.IsTrue(_originalFrames.SequenceEqual(scaler));
}
public void Scale_from_30_to_100()
{
var scaler = new FramerateScaler <string>(30, 100, _originalFrames);
Assert.AreEqual(1000, scaler.Count());
Assert.AreEqual(scaler.OutputDuration, scaler.InputDuration);
// 000 - 111 - 2222 ...
Assert.IsTrue(scaler.PatternIs(0, 0, 0, 1, 1, 1, 2, 2, 2, 2));
}
public void Should_set_default_values()
{
var scaler = new FramerateScaler <string>(30, 30, _originalFrames, 10);
Assert.AreEqual(30, scaler.InputRate);
Assert.AreEqual(30, scaler.OutputRate);
Assert.AreEqual(10, scaler.StartIndex);
Assert.AreEqual(_originalFrames.ElementAt(10), scaler.First());
}
public void Scale_from_30_to_15()
{
var scaler = new FramerateScaler <string>(30, 15, _originalFrames);
Assert.AreEqual(150, scaler.Count());
Assert.AreEqual(scaler.OutputDuration, scaler.InputDuration);
Assert.IsTrue(_originalFrames
.Where((item, index) => index % 2 == 1)
.SequenceEqual(scaler));
}
public void Scale_from_same_offset_by_half_is_idempotent()
{
var scaler = new FramerateScaler <string>(
30, 30, _originalFrames, _originalFrames.Count / 2);
Assert.AreEqual(150, scaler.Count());
Assert.AreEqual(scaler.OutputDuration, scaler.InputDuration);
Assert.IsTrue(_originalFrames
.Skip(150)
.SequenceEqual(scaler));
}
public void Scale_from_24p_to_ntsc()
{
var scaler = new FramerateScaler <string>(23.967, 29.97, _originalFrames);
Assert.AreEqual(375, scaler.Count());
Assert.AreEqual(
scaler.OutputDuration.TotalMilliseconds,
scaler.InputDuration.TotalMilliseconds, delta: 4);
// 0 - 1 - 2 - 33 ...
Assert.IsTrue(scaler.PatternIs(0, 1, 2, 3, 3));
}
public void Scale_from_30_to_60_offset_by_half()
{
var scaler = new FramerateScaler <string>(
30, 60, _originalFrames, _originalFrames.Count / 2);
Assert.AreEqual(300, scaler.Count());
Assert.AreEqual(scaler.OutputDuration, scaler.InputDuration);
Assert.IsTrue(_originalFrames
.Skip(150)
.Concat(_originalFrames.Skip(150))
.OrderBy(x => x)
.SequenceEqual(scaler));
}
public void Scale_from_30_to_60()
{
var scaler = new FramerateScaler <string>(30, 60, _originalFrames);
Assert.AreEqual(600, scaler.Count());
Assert.AreEqual(scaler.OutputDuration, scaler.InputDuration);
var result = scaler.ToList();
Assert.IsTrue(_originalFrames
.Concat(_originalFrames)
.OrderBy(x => x)
.SequenceEqual(scaler));
}
