public Theme()
{
m_segments = new List <Segment>();
weightings = new Weighting();
this.id = -1;
this.restSecondsMax = 0;
this.restSecondsMin = 0;
this.priority = 0;
this.themeType = ThemeType.none;
this.Name = "";
}
// Evaluates the most appropriate Segment to follow (or to layer respectively, for Highlights) from the list.
// This score is calculated by adding three basic scores, each one being a value between 0.0f and 1.0f, and affected by an individual weighting
// as authored in the psai Editor.
//
// 1. compatibility score
// 2. intensity score
// 3. variety score
//
// variety itself consists of the Segment's playcount score a random score, each affected by an individual
// weighting.
//
// TODO: maxPlaycount, minPlaycount and maxDeltaIntensity should be evaluated within this method.
Segment ChooseBestSegmentFromList(List<Follower> segmentList, Weighting weighting, float intensity, int maxPlaycount, int minPlaycount, float maxDeltaIntensity)
{
#if !(PSAI_NOLOG)
{
if (LogLevel.debug <= Logger.Instance.LogLevel)
{
StringBuilder sb = new StringBuilder();
sb.Append("ChooseBestSegmentFromList() snippetList.size()=");
sb.Append(segmentList.Count);
sb.Append(" intensity=");
sb.Append(intensity);
sb.Append(" maxPlaycount=");
sb.Append(maxPlaycount);
sb.Append(" minPlaycount=");
sb.Append(minPlaycount);
sb.Append(" maxDeltaIntensity=");
sb.Append(maxDeltaIntensity);
sb.Append(" weighting.switchGroups=");
sb.Append(weighting.switchGroups);
sb.Append(" weighting.intensityVsVariety=");
sb.Append( weighting.intensityVsVariety);
sb.Append(" weightingLowPlaycountVsRandom=");
sb.Append(weighting.lowPlaycountVsRandom);
Logger.Instance.Log(sb.ToString(), LogLevel.debug);
}
}
#endif
Segment resultSnippet = null;
if (segmentList.Count == 0)
{
#if !(PSAI_NOLOG)
{
if (LogLevel.debug <= Logger.Instance.LogLevel)
{
Logger.Instance.Log("ChooseBestSegmentFromList() empty segment list ! returning null", LogLevel.debug);
}
}
#endif
return null;
}
float playcountNormalizationFactor = 1.0f;
float intensityNormalizationFactor = 1.0f;
int deltaPlaycount = maxPlaycount - minPlaycount;
if (deltaPlaycount > 0)
playcountNormalizationFactor = (1.0f / deltaPlaycount);
else
playcountNormalizationFactor = 0.0f;
if (maxDeltaIntensity > 0)
intensityNormalizationFactor = ( 1.0f / maxDeltaIntensity );
else
intensityNormalizationFactor = 0.0f;
float bestSegmentScore = 0.0f;
int versize = segmentList.Count;
for (int i=0; i < versize; i++)
{
if (segmentList[i] != null)
{
Segment tmpTeilstueck = m_soundtrack.GetSegmentById(segmentList[i].snippetId); // TODO: unnecessary waste of CPU cycles ! pass the pointers directly or use a map / dictionary
//
// score calculation new
//
float weightingGroupStickyness = 1.0f - weighting.switchGroups;
float weightingIntensity = 1.0f - weighting.intensityVsVariety;
float weightingVariety = weighting.intensityVsVariety; // Variety consists of playcount and random
float weightingPlaycount = 1.0f - weighting.lowPlaycountVsRandom;
float weightingRandom = weighting.lowPlaycountVsRandom;
// switch group
float compatibilityScore = segmentList[i].compatibility * weightingGroupStickyness; // float value between 0 and 1
// intensity
float deltaIntensity = intensity - tmpTeilstueck.Intensity;
if (deltaIntensity < 0 )
{
deltaIntensity *= -1.0f;
}
float intensityScore = ( 1.0f - (deltaIntensity * intensityNormalizationFactor)) * weightingIntensity;
// variety
float playCountOfSnippetInPercent = ((tmpTeilstueck.Playcount - minPlaycount) * playcountNormalizationFactor);
float playCountScore = (1.0f - playCountOfSnippetInPercent) * weightingPlaycount;
float randomPercentValue = GetRandomFloat(); // returns a random percent float (between 0.0f and 0.99f)
float randomScore = randomPercentValue * weightingRandom;
float varietyScore = (playCountScore + randomScore) * weightingVariety / 2.0f;
float segmentScore = compatibilityScore + intensityScore + varietyScore;
// Vergleichen
if ( (resultSnippet == null) || (segmentScore > bestSegmentScore))
{
resultSnippet = tmpTeilstueck;
bestSegmentScore = segmentScore;
}
#if !(PSAI_NOLOG)
{
/*
if (LogLevel.debug <= Logger.Instance.LogLevel)
{
StringBuilder sb = new StringBuilder();
sb.Append("segmentList[");
sb.Append(i);
sb.Append("] id=");
sb.Append(segmentList[i].snippetId);
sb.Append(" segmentScore=");
sb.Append(segmentScore);
sb.Append(" compatibilityScore=");
sb.Append(compatibilityScore);
sb.Append(" intensityScore=");
sb.Append(intensityScore);
sb.Append(" varietyScore=");
sb.Append(varietyScore);
sb.Append(" [ playCountScore=");
sb.Append(playCountScore);
sb.Append(" randomScore=");
sb.Append(randomScore);
sb.Append(" ]");
sb.Append(" segmentList[i]->compatibility=");
sb.Append(segmentList[i].compatibility);
Logger.Instance.Log(sb.ToString(), LogLevel.debug);
}
*/
}
#endif
}
}
#if !(PSAI_NOLOG)
{
if (LogLevel.debug <= Logger.Instance.LogLevel)
{
StringBuilder sb = new StringBuilder();
sb.Append(" ...returning Segment id=");
sb.Append(resultSnippet.Id);
sb.Append(" themeId=");
sb.Append(resultSnippet.ThemeId);
sb.Append(" playbackCount=");
sb.Append(resultSnippet.Playcount);
sb.Append(" intensity=");
sb.Append(resultSnippet.Intensity);
sb.Append(" bestSegmentScore=");
sb.Append(bestSegmentScore);
Logger.Instance.Log(sb.ToString(), LogLevel.debug);
}
}
#endif
return resultSnippet;
}
public Theme()
{
m_segments = new List<Segment>();
weightings = new Weighting();
this.id = -1;
this.restSecondsMax = 0;
this.restSecondsMin = 0;
this.priority = 0;
this.themeType = ThemeType.none;
this.Name = "";
}
