private static void ApplyGlitchKaraokeEffect(AssLine stepLine, AssSection singingSection)
{
if (singingSection.Text.Length == 0)
{
return;
}
ApplySimpleKaraokeEffect(singingSection);
DateTime glitchEndTime = TimeUtil.Min(stepLine.Start.AddMilliseconds(70), stepLine.End);
Util.CharacterRange[] charRanges = GetGlitchKaraokeCharacterRanges(singingSection.Text[0]);
singingSection.Animations.Add(new GlitchingCharAnimation(stepLine.Start, glitchEndTime, charRanges));
}
protected override void Assign(Section section)
{
base.Assign(section);
AssSection assSection = (AssSection)section;
SecondaryColor = assSection.SecondaryColor;
CurrentWordForeColor = assSection.CurrentWordForeColor;
CurrentWordOutlineColor = assSection.CurrentWordOutlineColor;
CurrentWordShadowColor = assSection.CurrentWordShadowColor;
Duration = assSection.Duration;
Animations.Clear();
Animations.AddRange(assSection.Animations);
}
internal void ApplyStyle(AssSection section, AssStyle style, AssStyleOptions options)
{
section.Font = style.Font;
section.Scale = style.LineHeight / DefaultStyle.LineHeight;
section.Bold = style.Bold;
section.Italic = style.Italic;
section.Underline = style.Underline;
section.ForeColor = style.PrimaryColor;
section.SecondaryColor = style.SecondaryColor;
if (options?.IsKaraoke ?? false)
{
section.CurrentWordForeColor = options.CurrentWordTextColor;
section.CurrentWordOutlineColor = options.CurrentWordOutlineColor;
section.CurrentWordShadowColor = options.CurrentWordShadowColor;
}
else
{
section.CurrentWordForeColor = Color.Empty;
section.CurrentWordOutlineColor = Color.Empty;
section.CurrentWordShadowColor = Color.Empty;
}
section.BackColor = Color.Empty;
section.ShadowColors.Clear();
if (style.HasShadow)
{
foreach (ShadowType shadowType in options?.ShadowTypes ?? new List <ShadowType> {
ShadowType.SoftShadow
})
{
section.ShadowColors[shadowType] = style.ShadowColor;
}
}
if (style.HasOutline)
{
if (style.OutlineIsBox)
{
section.BackColor = style.OutlineColor;
}
else
{
section.ShadowColors[ShadowType.Glow] = style.OutlineColor;
}
}
section.Blur = 0;
}
private static void ApplyGlitchKaraokeEffect(AssLine stepLine, List <AssSection> singingSections)
{
AssSection singingSection = singingSections.LastOrDefault(s => s.RubyPart == RubyPart.None || s.RubyPart == RubyPart.Text);
if (singingSection == null || singingSection.Text.Length == 0)
{
return;
}
ApplySimpleKaraokeEffect(singingSections);
DateTime glitchEndTime = TimeUtil.Min(stepLine.Start.AddMilliseconds(70), stepLine.End);
Util.CharacterRange[] charRanges = GetGlitchKaraokeCharacterRanges(singingSection.Text[0]);
singingSection.Animations.Add(new GlitchingCharAnimation(stepLine.Start, glitchEndTime, charRanges));
}
public AssLine(Line line)
: base(line)
{
if (line is AssLine || Sections.All(s => s.StartOffset == TimeSpan.Zero))
{
return;
}
for (int i = 0; i < Sections.Count - 1; i++)
{
((AssSection)Sections[i]).Duration = Sections[i + 1].StartOffset - Sections[i].StartOffset;
}
AssSection lastSection = (AssSection)Sections.Last();
lastSection.Duration = End - Start - lastSection.StartOffset;
}
private static void CreateRubySections(AssLine line)
{
for (int sectionIdx = line.Sections.Count - 1; sectionIdx >= 0; sectionIdx--)
{
AssSection section = (AssSection)line.Sections[sectionIdx];
if (section.RubyPosition == RubyPosition.None)
{
continue;
}
MatchCollection matches = Regex.Matches(section.Text, @"\[(?<text>.+?)/(?<ruby>.+?)\]");
if (matches.Count == 0)
{
continue;
}
line.Sections.RemoveAt(sectionIdx);
int interStartPos = 0;
int numSubSections = 0;
foreach (Match match in matches)
{
if (match.Index > interStartPos)
{
InsertRubySection(line, section, section.Text.Substring(interStartPos, match.Index - interStartPos), RubyPart.None, sectionIdx, ref numSubSections);
}
InsertRubySection(line, section, match.Groups["text"].Value, RubyPart.Text, sectionIdx, ref numSubSections);
InsertRubySection(line, section, "(", RubyPart.Parenthesis, sectionIdx, ref numSubSections);
InsertRubySection(line, section, match.Groups["ruby"].Value, section.RubyPosition == RubyPosition.Below ? RubyPart.RubyBelow : RubyPart.RubyAbove, sectionIdx, ref numSubSections);
InsertRubySection(line, section, ")", RubyPart.Parenthesis, sectionIdx, ref numSubSections);
interStartPos = match.Index + match.Length;
}
if (interStartPos < section.Text.Length)
{
InsertRubySection(line, section, section.Text.Substring(interStartPos), RubyPart.None, sectionIdx, ref numSubSections);
}
((AssSection)line.Sections[sectionIdx]).Duration = section.Duration;
}
}
private static void ApplySimpleKaraokeEffect(AssSection singingSection)
{
if (!singingSection.CurrentWordForeColor.IsEmpty)
{
singingSection.ForeColor = singingSection.CurrentWordForeColor;
}
if (!singingSection.CurrentWordShadowColor.IsEmpty)
{
foreach (ShadowType shadowType in singingSection.ShadowColors.Keys.ToList())
{
singingSection.ShadowColors[shadowType] = singingSection.CurrentWordShadowColor;
}
}
if (!singingSection.CurrentWordOutlineColor.IsEmpty && singingSection.ShadowColors.ContainsKey(ShadowType.Glow))
{
singingSection.ShadowColors[ShadowType.Glow] = singingSection.CurrentWordOutlineColor;
}
}
private static void AddKaraokeEffects(AssLine originalLine, AssLine stepLine, SortedList <TimeSpan, int> activeSectionsPerStep, int stepIdx)
{
int numActiveSections = activeSectionsPerStep.Values[stepIdx];
AssSection singingSection = (AssSection)stepLine.Sections[numActiveSections - 1];
switch (stepLine.KaraokeType)
{
case KaraokeType.Simple:
ApplySimpleKaraokeEffect(singingSection);
break;
case KaraokeType.Fade:
ApplyFadeKaraokeEffect(originalLine, stepLine, activeSectionsPerStep, stepIdx);
break;
case KaraokeType.Glitch:
ApplyGlitchKaraokeEffect(stepLine, singingSection);
break;
}
}
private static void MoveLineBreaksToSeparateSections(AssLine line)
{
for (int sectionIdx = line.Sections.Count - 1; sectionIdx >= 0; sectionIdx--)
{
AssSection section = (AssSection)line.Sections[sectionIdx];
Match match = Regex.Match(section.Text, @"((?:\r\n)+|[^\r\n]+)+");
if (!match.Success || match.Groups[1].Captures.Count == 1)
{
continue;
}
line.Sections.RemoveAt(sectionIdx);
for (int i = 0; i < match.Groups[1].Captures.Count; i++)
{
AssSection subSection = (AssSection)section.Clone();
subSection.Text = match.Groups[1].Captures[i].Value;
line.Sections.Insert(sectionIdx + i, subSection);
}
}
}
// Aegisub's background boxes can have padding just like on YouTube, and the horizontal and vertical padding
// can even be different. The big downside of this feature, however, is that background boxes of adjacent
// sections overlap each other which looks like a mess. Therefore we don't use it at all (all the styles
// have an outline thickness of 0.01) and instead add a space at the start and end of each line of text
// to emulate the YouTube horizontal padding manually.
private static void EmulateBorders(AssLine line)
{
for (int i = 0; i < line.Sections.Count; i++)
{
AssSection section = (AssSection)line.Sections[i];
if (Regex.IsMatch(section.Text, @"^[\r\n]+$"))
{
continue;
}
if (i == 0 || line.Sections[i - 1].Text.EndsWith("\r\n"))
{
section.Text = " " + section.Text;
}
if (i == line.Sections.Count - 1 || line.Sections[i + 1].Text.StartsWith("\r\n"))
{
section.Text = section.Text + " ";
}
}
}
private static void ApplyFadeOutKaraokeEffect(AssLine originalLine, AssLine stepLine, SortedList <TimeSpan, int> activeSectionsPerStep, int stepIdx)
{
int stepFirstSectionIdx = 0;
for (int prevStepIdx = 0; prevStepIdx < stepIdx; prevStepIdx++)
{
DateTime fadeStartTime = TimeUtil.SnapTimeToFrame((originalLine.Start + activeSectionsPerStep.Keys[prevStepIdx + 1]).AddMilliseconds(20));
DateTime fadeEndTime = fadeStartTime.AddMilliseconds(1000);
int stepLastSectionIdx = activeSectionsPerStep.Values[prevStepIdx] - 1;
for (int sectionIdx = stepFirstSectionIdx; sectionIdx <= stepLastSectionIdx; sectionIdx++)
{
AssSection section = (AssSection)stepLine.Sections[sectionIdx];
if (!section.CurrentWordForeColor.IsEmpty && section.CurrentWordForeColor != section.ForeColor)
{
section.Animations.Add(new ForeColorAnimation(fadeStartTime, section.CurrentWordForeColor, fadeEndTime, section.ForeColor));
}
if (!section.CurrentWordShadowColor.IsEmpty)
{
foreach (KeyValuePair <ShadowType, Color> shadowColor in section.ShadowColors)
{
if (section.CurrentWordShadowColor != shadowColor.Value)
{
section.Animations.Add(new ShadowColorAnimation(shadowColor.Key, fadeStartTime, section.CurrentWordShadowColor, fadeEndTime, shadowColor.Value));
}
}
}
if (!section.CurrentWordOutlineColor.IsEmpty && section.CurrentWordOutlineColor != section.ShadowColors.GetOrDefault(ShadowType.Glow))
{
section.Animations.Add(new ShadowColorAnimation(ShadowType.Glow, fadeStartTime, section.CurrentWordOutlineColor, fadeEndTime, section.ShadowColors[ShadowType.Glow]));
}
}
stepFirstSectionIdx = stepLastSectionIdx + 1;
}
}
private static void ApplyFadeInKaraokeEffect(AssLine stepLine, AssSection singingSection)
{
DateTime fadeEndTime = TimeUtil.Min(stepLine.Start.AddMilliseconds(500), stepLine.End);
if (singingSection.CurrentWordForeColor.IsEmpty)
{
if (singingSection.ForeColor != singingSection.SecondaryColor)
{
singingSection.Animations.Add(new ForeColorAnimation(stepLine.Start, singingSection.SecondaryColor, fadeEndTime, singingSection.ForeColor));
}
}
else
{
if (singingSection.CurrentWordForeColor != singingSection.SecondaryColor)
{
singingSection.Animations.Add(new ForeColorAnimation(stepLine.Start, singingSection.SecondaryColor, fadeEndTime, singingSection.CurrentWordForeColor));
}
}
if (!singingSection.CurrentWordShadowColor.IsEmpty)
{
foreach (KeyValuePair <ShadowType, Color> shadowColor in singingSection.ShadowColors)
{
if (singingSection.CurrentWordShadowColor != shadowColor.Value)
{
singingSection.Animations.Add(new ShadowColorAnimation(shadowColor.Key, stepLine.Start, shadowColor.Value, fadeEndTime, singingSection.CurrentWordShadowColor));
}
}
}
if (!singingSection.CurrentWordOutlineColor.IsEmpty && singingSection.CurrentWordOutlineColor != singingSection.ShadowColors.GetOrDefault(ShadowType.Glow))
{
singingSection.Animations.Add(new ShadowColorAnimation(
ShadowType.Glow, stepLine.Start, singingSection.ShadowColors[ShadowType.Glow], fadeEndTime, singingSection.CurrentWordOutlineColor));
}
}
private void AppendSectionTags(AssSection section, AssSection prevSection, AssLineContentBuilder lineContent)
{
if (section.Font != prevSection.Font)
{
lineContent.AppendTag("fn", section.Font);
}
float prevLineHeight = ScaleToLineHeight(prevSection.Font, prevSection.Scale);
float lineHeight = ScaleToLineHeight(section.Font, section.Scale);
if (lineHeight != prevLineHeight)
{
lineContent.AppendTag("fs", lineHeight);
}
if (section.Bold != prevSection.Bold)
{
lineContent.AppendTag("b", section.Bold);
}
if (section.Italic != prevSection.Italic)
{
lineContent.AppendTag("i", section.Italic);
}
if (section.Underline != prevSection.Underline)
{
lineContent.AppendTag("u", section.Underline);
}
AppendColorTags("c", "1a", prevSection.ForeColor, section.ForeColor, lineContent);
AppendColorTags("2c", "2a", prevSection.SecondaryColor, section.SecondaryColor, lineContent);
if (section.BackColor.A > 0)
{
AppendColorTags("3c", "3a", prevSection.BackColor, section.BackColor, lineContent);
if (prevSection.ShadowColors.Count == 1 && section.ShadowColors.Count == 1)
{
AppendColorTags("4c", "4a", prevSection.ShadowColors.Values.First(), section.ShadowColors.Values.First(), lineContent);
}
}
else if (prevSection.ShadowColors.Count == 1 && section.ShadowColors.Count == 1)
{
if (section.ShadowColors.Keys.First() == ShadowType.Glow)
{
AppendColorTags("3c", "3a", prevSection.ShadowColors.Values.First(), section.ShadowColors.Values.First(), lineContent);
}
else
{
AppendColorTags("4c", "4a", prevSection.ShadowColors.Values.First(), section.ShadowColors.Values.First(), lineContent);
}
}
if (section.Offset != prevSection.Offset)
{
lineContent.AppendTag(
section.Offset switch
{
OffsetType.Subscript => "ytsub",
OffsetType.Superscript => "ytsup",
OffsetType.Regular => "ytsur",
}
protected virtual void WriteLine(AssLine line, StreamWriter writer)
{
if (line.Sections.Count == 0)
{
return;
}
AssStyle style = GetStyleMatchingStructure((AssSection)line.Sections[0]);
WriteLineMetadata(line, style, writer);
AssSection prevSection = new AssSection();
AssStyle prevStyle = style;
ApplyStyle(prevSection, prevStyle);
AssLineContentBuilder lineContent = new AssLineContentBuilder();
AppendLineTags(line, style, lineContent);
RubyPart currentRubyPosition = RubyPart.None;
for (int i = 0; i < line.Sections.Count; i++)
{
AssSection section = (AssSection)line.Sections[i];
style = GetStyleMatchingStructure(section);
if (style != prevStyle || (currentRubyPosition != RubyPart.None && section.RubyPart == RubyPart.None))
{
lineContent.AppendTag("r", style);
currentRubyPosition = RubyPart.None;
prevSection = (AssSection)prevSection.Clone();
ApplyStyle(prevSection, style);
}
AppendSectionTags(section, prevSection, lineContent);
if (section.RubyPart == RubyPart.Text)
{
RubyPart rubyPart;
if (i + 4 > line.Sections.Count || ((rubyPart = line.Sections[i + 2].RubyPart) != RubyPart.RubyAbove && rubyPart != RubyPart.RubyBelow))
{
throw new InvalidDataException("Invalid ruby sequence");
}
if (rubyPart != currentRubyPosition)
{
lineContent.AppendTag("ytruby", rubyPart == RubyPart.RubyAbove ? 8 : 2);
currentRubyPosition = rubyPart;
}
lineContent.AppendText($"[{section.Text}/{line.Sections[i + 2].Text}]");
i += 3;
}
else
{
lineContent.AppendText(section.Text);
}
prevSection = section;
prevStyle = style;
}
writer.WriteLine(lineContent);
}
internal void ApplyStyle(AssSection section, AssStyle style)
{
ApplyStyle(section, style, GetStyleOptions(style.Name));
}