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Merge pull request #133 from rlauuzo/reverse-credit-fingerprints

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Use reversed fingerprints for credits
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rlauuzo 2024-05-01 11:10:25 +02:00 committed by GitHub
commit da37638a85
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1 changed files with 17 additions and 5 deletions
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22
ConfusedPolarBear.Plugin.IntroSkipper/Analyzers/ChromaprintAnalyzer.cs
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@ -76,6 +76,12 @@ public class ChromaprintAnalyzer : IMediaFileAnalyzer
{
fingerprintCache[episode.EpisodeId] = FFmpegWrapper.Fingerprint(episode, mode);
// Use reversed fingerprints for credits
if (_analysisMode == AnalysisMode.Credits)
{
Array.Reverse(fingerprintCache[episode.EpisodeId]);
}
if (cancellationToken.IsCancellationRequested)
{
return analysisQueue;
@ -124,14 +130,20 @@ public class ChromaprintAnalyzer : IMediaFileAnalyzer
* While this is desired behavior for detecting introductions, it breaks credit
* detection, as the audio we're analyzing was extracted from some point into the file.
*
* To fix this, add the starting time of the fingerprint to the reported time range.
* To fix this, the starting and ending times need to be switched, as they were previously reversed
* and subtracted from the episode duration to get the reported time range.
*/
if (this._analysisMode == AnalysisMode.Credits)
{
currentIntro.IntroStart += currentEpisode.CreditsFingerprintStart;
currentIntro.IntroEnd += currentEpisode.CreditsFingerprintStart;
remainingIntro.IntroStart += remainingEpisode.CreditsFingerprintStart;
remainingIntro.IntroEnd += remainingEpisode.CreditsFingerprintStart;
// Calculate new values for the current intro
double currentOriginalIntroStart = currentIntro.IntroStart;
currentIntro.IntroStart = currentEpisode.Duration - currentIntro.IntroEnd;
currentIntro.IntroEnd = currentEpisode.Duration - currentOriginalIntroStart;
// Calculate new values for the remaining intro
double remainingIntroOriginalStart = remainingIntro.IntroStart;
remainingIntro.IntroStart = remainingEpisode.Duration - remainingIntro.IntroEnd;
remainingIntro.IntroEnd = remainingEpisode.Duration - remainingIntroOriginalStart;
}
// Only save the discovered intro if it is: