private double GetFadeLength(Track fromTrack, Track toTrack)
{
if (fromTrack == null && toTrack == null) return 0F;
if (toTrack == null) return fromTrack.SamplesToSeconds(fromTrack.FullEndLoopLength);
if (fromTrack == null) return BpmHelper.GetDefaultLoopLength(toTrack.StartBpm)/4D;
var fadeInLength = toTrack.FullStartLoopLengthSeconds;
if (fadeInLength == 0)
fadeInLength = BpmHelper.GetDefaultLoopLength(toTrack.StartBpm);
var fadeOutLength = GetExtendedFadeOutLength(fromTrack, toTrack);
if (!HasExtendedMixAttributes(fromTrack, toTrack))
{
if (fromTrack.PowerDownOnEnd)
{
fadeOutLength = GetPowerDownFadeLength(fromTrack);
fadeOutLength = BpmHelper.GetLengthAdjustedToMatchAnotherTrack(fromTrack, toTrack, fadeOutLength);
}
if (toTrack.StartBpm > (fromTrack.EndBpm * 1.1M))
{
fadeOutLength = fadeOutLength / 2;
}
}
var fadeLength = fadeOutLength;
if (fadeInLength < fadeLength) fadeLength = fadeInLength;
return fadeLength;
}
/// <summary>
/// Saves the track details to the track comment tag
/// </summary>
/// <param name="track">The track.</param>
public static void SaveExtendedAttributes(Track track)
{
var attributes = new Dictionary<string, string>();
if (track.StartBpm != 0)
attributes.Add("StartBPM", $"{track.StartBpm}");
if (track.EndBpm != 0)
attributes.Add("EndBPM", $"{track.EndBpm}");
attributes.Add("Duration", $"{track.LengthSeconds}");
if (track.FadeInStart != 0)
attributes.Add("FadeIn", $"{track.SamplesToSeconds(track.FadeInStart):0.000}");
if (track.FadeOutStart != 0)
attributes.Add("FadeOut", $"{track.SamplesToSeconds(track.FadeOutStart):0.000}");
if (track.BpmAdjustmentRatio != 1)
attributes.Add("BPMAdjust", $"{track.BpmAdjustmentRatio}");
if (track.FadeInLength != 0)
attributes.Add("FadeInLengthInSeconds", $"{track.FadeInLengthSeconds:0.000}");
if (track.StartLoopCount > 0)
attributes.Add("StartLoopCount", $"{track.StartLoopCount}");
if (track.FadeOutLength != 0)
attributes.Add("FadeOutLengthInSeconds", $"{track.SamplesToSeconds(track.FadeOutLength):0.000}");
if (track.EndLoopCount > 0)
attributes.Add("EndLoopCount", $"{track.EndLoopCount}");
if (track.UsePreFadeIn)
{
attributes.Add("PreFadeInStartVolume", $"{track.PreFadeInStartVolume*100:00}");
attributes.Add("PreFadeInPosition", $"{track.SamplesToSeconds(track.PreFadeInStart):0.000}");
}
if (track.PowerDownOnEnd) attributes.Add("PowerDown", $"{track.PowerDownOnEnd}");
if (track.HasSkipSection)
{
attributes.Add("SkipStart", $"{track.SamplesToSeconds(track.SkipStart):0.000}");
attributes.Add("SkipLengthInSeconds", $"{track.SamplesToSeconds(track.SkipLength):0.000}");
}
if (track.Rank != 1)
attributes.Add("Rank", $"{track.Rank}");
if (track.Key != "")
attributes.Add("Key", track.Key);
var extendedAttributeFile = GetExtendedAttributeFile(track.Description);
SaveExtendedAttributes(attributes, extendedAttributeFile);
}
private static IEnumerable<TrackSample> GetTrackSamples(Track track)
{
DebugHelper.WriteLine("GetTrackSamples for " + track.Description);
var trackSamples = new List<TrackSample>();
if (track.UsePreFadeIn)
{
trackSamples.Add(new TrackSample
{
IsLooped = false,
Start = track.SamplesToSeconds(track.PreFadeInStart),
Length = track.PreFadeInLengthSeconds,
Description = "Pre Fade In",
Key = "PreFadeIn"
});
}
trackSamples.Add(new TrackSample
{
IsLooped = track.IsLoopedAtStart,
Start = track.SamplesToSeconds(track.FadeInStart),
Length = track.FadeInLengthSeconds,
Description = "Fade In",
Key = "FadeIn"
});
trackSamples.Add(new TrackSample
{
IsLooped = track.IsLoopedAtEnd,
Start = track.SamplesToSeconds(track.FadeOutStart),
Length = track.FadeOutLengthSeconds,
Description = "Fade Out",
Key = "FadeOut"
});
trackSamples.AddRange(GetAdditionalTrackSamples(track.Description));
return trackSamples;
}