fix missing opening notes on non-first play per session (!)

notes

@@ -33,11 +33,6 @@ parameters {
 TODO {
     settings dialog {
         about-license info
-        
-        probably some audio engine settings {
-            working sample rate
-            buffer sizes and such
-        }
     }
     
     revert-to-saved menu action
@@ -87,8 +82,6 @@ TODO {
             does NOT break preview mode??
             seems to be only with the Maybe sample??? idk
         }
-        playback after stopping immediately after a note in the first pattern played sometimes skips that note
-        ^ probably due to note IDs; randomize starting point on each playback start? or fix something in InstrumentCore
         things can apparently be hooked up cyclically, which completely breaks the queue
         
         pattern switching is slow when changing (especially increasing) number of rows; set fixed page size to avoid reallocation?

xybrid/audio/audioengine.cpp

@@ -168,6 +168,10 @@ void AudioEngine::play(std::shared_ptr<Project> p, int fromPos) {
         tempo = project->tempo;
         tickAcc = 0;
 
+        // properly initialize note tracking to prevent
+        chTrack.clear(); // overwritten starting notes
+        chTrack.resize(findPattern()->channels.size());
+
         startOutput();
 
         mode = Playing;
@@ -271,6 +275,10 @@ void AudioEngine::render(std::shared_ptr<Project> p, QString fileName) {
         tempo = project->tempo;
         tickAcc = 0;
 
+        // properly initialize note tracking to prevent
+        chTrack.clear(); // overwritten starting notes
+        chTrack.resize(findPattern()->channels.size());
+
         initAudio(); // we actually need the period size. whoops.
 
         QFileInfo fi(fileName);

xybrid/nodelib/instrumentcore.cpp

@@ -209,7 +209,7 @@ void InstrumentCore::process(CommandPort* i, AudioPort* o) {
     // then do the thing
     if (o) o->pull();
 
-    double tickTime = smpTime * audioEngine->curTickSize();
+    double tickTime = smpTime * static_cast<double>(audioEngine->curTickSize());
 
     if (processNote) {
         for (auto p = activeNotes.begin(); p != activeNotes.end(); ) {

xybrid/settingsdialog.cpp

@@ -70,7 +70,7 @@ SettingsDialog::SettingsDialog(QWidget *parent) :
 
     // audio page
     QStringList sampleRates = { qs("44100Hz"), qs("48000Hz"), qs("96000Hz") };
-    const constexpr int minBufMs = 5, maxBufMs = 250;
+    const constexpr int minBufMs = 25, maxBufMs = 250;
     const QString ms = qs("ms");
 
     bind(ui->playbackSampleRate, AudioConfig::playbackSampleRate, sampleRates);