Fix MIDI time errors

Author: landrok

src/PhpTabs/Writer/Midi/MidiSequenceParser.php

@@ -39,7 +39,6 @@ class MidiSequenceParser
 
     private $song;
     private $flags;
-    // @todo check that this test value fix
     private $infoTrack;
     private $metronomeTrack;
     private $metronomeChannelId;
@@ -145,7 +144,7 @@ private function createTrack(MidiSequenceHelper $helper, Track $track): void
         if ($channel !== null) {
             $previous = null;
 
-            $this->addBend($helper, $track->getNumber(), Duration::QUARTER_TIME, self::DEFAULT_BEND, $channel->getId(), false);
+            $this->addBend($helper, $track->getNumber(), Duration::QUARTER_TIME, self::DEFAULT_BEND, $track->getChannelId(), false);
             $this->makeChannel($helper, $channel, $track->getNumber());
 
             $mCount = count($helper->getMeasureHelpers());
@@ -255,7 +254,7 @@ private function makeNotes(
                         $tick = $start;
                         while (true) {
                             if ($tick + 10 >= ($start + $duration)) {
-                                break ;
+                                break;
                             } elseif (($tick + $tpLength) >= ($start + $duration)) {
                                       $tpLength = ((($start + $duration) - $tick) - 1);
                             }

src/PhpTabs/Writer/Midi/MidiWriter.php

@@ -115,10 +115,17 @@ private function writeTrack(MidiTrack $track, $out): int
      */
     private function writeEvent(MidiEvent $event, MidiEvent $previous = null, $out = null): int
     {
+        // @todo Remove this lines when timing will be patched
+        // time should not be < 0
+        $time = $previous !== null
+            ? ($event->getTick() - $previous->getTick())
+            : 0;
+        if ($time < 0) {
+            $time = abs($event->getTick() - $previous->getTick());
+        }
+
         $length = $this->writeVariableLengthQuantity(
-            $previous !== null
-                ? ($event->getTick() - $previous->getTick())
-                : 0,
+            $time,
             $out
         );