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Merge pull request #600 from rosenbjerg/ensure-cancellationtoken-passed-to-cancellablethrough-is-not-already-cancelled

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Throw if CancellationToken passed to CancellableThrough is not already cancelled
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Malte Rosenbjerg 2025-10-27 21:12:52 +01:00 • committed by GitHub
commit e12bc2a148
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2 changed files with 25 additions and 4 deletions
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28
FFMpegCore.Test/VideoTest.cs
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@ -1122,13 +1122,12 @@ public class VideoTest
[TestMethod]
[Timeout(BaseTimeoutMilliseconds, CooperativeCancellation = true)]
public void Video_Cancel_CancellationToken_Before_Throws()
public void Video_Cancel_CancellationToken_BeforeProcessing_Throws()
{
using var outputFile = new TemporaryFile("out.mp4");
using var cts = CancellationTokenSource.CreateLinkedTokenSource(TestContext.CancellationToken);
cts.Cancel();
var task = FFMpegArguments
.FromFileInput("testsrc2=size=320x240[out0]; sine[out1]", false, args => args
.WithCustomArgument("-re")
@ -1139,8 +1138,29 @@ public class VideoTest
.WithSpeedPreset(Speed.VeryFast))
.CancellableThrough(cts.Token);
Assert.ThrowsExactly<OperationCanceledException>(() => task.CancellableThrough(TestContext.CancellationToken)
.ProcessSynchronously());
cts.Cancel();
Assert.ThrowsExactly<OperationCanceledException>(() => task.ProcessSynchronously());
}
[TestMethod]
[Timeout(BaseTimeoutMilliseconds, CooperativeCancellation = true)]
public void Video_Cancel_CancellationToken_BeforePassing_Throws()
{
using var outputFile = new TemporaryFile("out.mp4");
using var cts = CancellationTokenSource.CreateLinkedTokenSource(TestContext.CancellationToken);
cts.Cancel();
var task = FFMpegArguments
.FromFileInput("testsrc2=size=320x240[out0]; sine[out1]", false, args => args
.WithCustomArgument("-re")
.ForceFormat("lavfi"))
.OutputToFile(outputFile, false, opt => opt
.WithAudioCodec(AudioCodec.Aac)
.WithVideoCodec(VideoCodec.LibX264)
.WithSpeedPreset(Speed.VeryFast));
Assert.ThrowsExactly<OperationCanceledException>(() => task.CancellableThrough(cts.Token));
}
[TestMethod]

1
FFMpegCore/FFMpeg/FFMpegArgumentProcessor.cs
View file

@ -85,6 +85,7 @@ public class FFMpegArgumentProcessor
public FFMpegArgumentProcessor CancellableThrough(CancellationToken token, int timeout = 0)
{
token.ThrowIfCancellationRequested();
_cancellationTokenRegistration?.Dispose();
_cancellationTokenRegistration = token.Register(() => Cancel(timeout));
return this;