void AssKaraoke::RemoveSplit(size_t syl_idx) {
// Don't allow removing the first syllable
if (syl_idx == 0) return;
Syllable &syl = syls[syl_idx];
Syllable &prev = syls[syl_idx - 1];
prev.duration += syl.duration;
for (auto const& tag : syl.ovr_tags)
prev.ovr_tags[tag.first + prev.text.size()] = tag.second;
prev.text += syl.text;
syls.erase(syls.begin() + syl_idx);
if (!no_announce) AnnounceSyllablesChanged();
}
void AssKaraoke::SetLine(AssDialogue *line, bool auto_split, bool normalize) {
active_line = line;
syls.clear();
Syllable syl;
syl.start_time = line->Start;
syl.duration = 0;
syl.tag_type = "\\k";
ParseSyllables(line, syl);
if (normalize) {
// Normalize the syllables so that the total duration is equal to the line length
int end_time = active_line->End;
int last_end = syl.start_time + syl.duration;
// Total duration is shorter than the line length so just extend the last
// syllable; this has no effect on rendering but is easier to work with
if (last_end < end_time)
syls.back().duration += end_time - last_end;
else if (last_end > end_time) {
// Truncate any syllables that extend past the end of the line
for (auto& syl : syls) {
if (syl.start_time > end_time) {
syl.start_time = end_time;
syl.duration = 0;
}
else {
syl.duration = std::min(syl.duration, end_time - syl.start_time);
}
}
}
}
// Add karaoke splits at each space
if (auto_split && syls.size() == 1) {
size_t pos;
no_announce = true;
while ((pos = syls.back().text.find(' ')) != std::string::npos)
AddSplit(syls.size() - 1, pos + 1);
no_announce = false;
}
AnnounceSyllablesChanged();
}
void AssKaraoke::AddSplit(size_t syl_idx, size_t pos) {
syls.insert(syls.begin() + syl_idx + 1, Syllable());
Syllable &syl = syls[syl_idx];
Syllable &new_syl = syls[syl_idx + 1];
// If the syl is empty or the user is adding a syllable past the last
// character then pos will be out of bounds. Doing this is a bit goofy,
// but it's sometimes required for complex karaoke scripts
if (pos < syl.text.size()) {
new_syl.text = syl.text.substr(pos);
syl.text = syl.text.substr(0, pos);
}
if (new_syl.text.empty())
new_syl.duration = 0;
else if (syl.text.empty()) {
new_syl.duration = syl.duration;
syl.duration = 0;
}
else {
new_syl.duration = (syl.duration * new_syl.text.size() / (syl.text.size() + new_syl.text.size()) + 5) / 10 * 10;
syl.duration -= new_syl.duration;
}
assert(syl.duration >= 0);
new_syl.start_time = syl.start_time + syl.duration;
new_syl.tag_type = syl.tag_type;
// Move all override tags after the split to the new syllable and fix the indices
size_t text_len = syl.text.size();
for (auto it = syl.ovr_tags.begin(); it != syl.ovr_tags.end(); ) {
if (it->first < text_len)
++it;
else {
new_syl.ovr_tags[it->first - text_len] = it->second;
syl.ovr_tags.erase(it++);
}
}
if (!no_announce) AnnounceSyllablesChanged();
}
