From 766a5bf688378128ce12911d9cc3ca6d20823407 Mon Sep 17 00:00:00 2001
From: itsmattkc <34096995+itsmattkc@users.noreply.github.com>
Date: Sat, 21 May 2022 17:26:54 -0700
Subject: [PATCH 1/2] audiovisualwaveform: skip null copy length

---
 app/audio/audiovisualwaveform.cpp | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/app/audio/audiovisualwaveform.cpp b/app/audio/audiovisualwaveform.cpp
index 03bd6aabc..0fb9c215a 100644
--- a/app/audio/audiovisualwaveform.cpp
+++ b/app/audio/audiovisualwaveform.cpp
@@ -152,6 +152,9 @@ void AudioVisualWaveform::OverwriteSums(const AudioVisualWaveform &sums, const r
     int copy_len = their_arr.size() - their_start_index;
     if (!length.isNull()) {
       copy_len = qMin(copy_len, time_to_samples(length, rate_dbl));
+      if (copy_len == 0) {
+        continue;
+      }
     }
 
     // Determine end index of our array

From 3de9251cf59cf41b12a82a0c6036e377f05df41b Mon Sep 17 00:00:00 2001
From: itsmattkc <34096995+itsmattkc@users.noreply.github.com>
Date: Sat, 21 May 2022 18:34:41 -0700
Subject: [PATCH 2/2] viewer: limit invalidation range

---
 app/node/output/viewer/viewer.cpp | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/app/node/output/viewer/viewer.cpp b/app/node/output/viewer/viewer.cpp
index 34629c4f7..34103e887 100644
--- a/app/node/output/viewer/viewer.cpp
+++ b/app/node/output/viewer/viewer.cpp
@@ -227,9 +227,11 @@ void ViewerOutput::InvalidateCache(const TimeRange& range, const QString& from,
 
   // TEMP: Just to restore the intended functionality for now. This will be removed later.
   if (from == kTextureInput) {
-    video_frame_cache()->Invalidate(range);
+    TimeRange r = range.Intersected(TimeRange(0, GetVideoLength()));
+    if (r.length() != 0) video_frame_cache()->Invalidate(r);
   } else if (from == kSamplesInput) {
-    audio_playback_cache()->Invalidate(range);
+    TimeRange r = range.Intersected(TimeRange(0, GetAudioLength()));
+    if (r.length() != 0) audio_playback_cache()->Invalidate(r);
   }
 }