From 2f7dc3c98b6c571a5c0cfcf3ee44c5d82d4d122d Mon Sep 17 00:00:00 2001
From: itsmattkc <34096995+itsmattkc@users.noreply.github.com>
Date: Sun, 29 May 2022 17:52:35 -0700
Subject: [PATCH] implemented separate waveform cache

---
 app/audio/audiovisualwaveform.cpp             |  68 ++++++-----
 app/audio/audiovisualwaveform.h               |   7 +-
 app/node/block/clip/clip.cpp                  |  20 +++-
 app/node/block/clip/clip.h                    |   6 +-
 app/node/node.cpp                             |   1 +
 app/node/node.h                               |   7 ++
 app/node/output/viewer/viewer.cpp             |  35 +++++-
 app/node/output/viewer/viewer.h               |  16 +++
 app/node/project/footage/footage.cpp          |   2 +
 .../project/serializer/serializer220403.cpp   |   3 +
 app/render/CMakeLists.txt                     |   2 +
 app/render/audioplaybackcache.cpp             |  20 ----
 app/render/audioplaybackcache.h               |  12 --
 app/render/audiowaveformcache.cpp             | 101 +++++++++++++++++
 app/render/audiowaveformcache.h               |  85 ++++++++++++++
 app/render/previewautocacher.cpp              | 106 +++++-------------
 app/render/previewautocacher.h                |   9 +-
 app/render/rendermanager.cpp                  |   1 +
 app/render/rendermanager.h                    |   2 +
 app/render/renderprocessor.cpp                |   4 +-
 app/widget/audiomonitor/audiomonitor.cpp      |   7 +-
 app/widget/audiomonitor/audiomonitor.h        |   9 +-
 app/widget/timelinewidget/tool/pointer.cpp    |   3 +-
 .../timelinewidget/undo/timelineundosplit.cpp |   5 +-
 .../timelinewidget/view/timelineview.cpp      |   4 +-
 app/widget/viewer/audiowaveformview.cpp       |  16 ++-
 app/widget/viewer/audiowaveformview.h         |   4 +-
 app/widget/viewer/viewer.cpp                  |   4 +-
 28 files changed, 381 insertions(+), 178 deletions(-)
 create mode 100644 app/render/audiowaveformcache.cpp
 create mode 100644 app/render/audiowaveformcache.h

diff --git a/app/audio/audiovisualwaveform.cpp b/app/audio/audiovisualwaveform.cpp
index 0fb9c215a..c9b2ef50e 100644
--- a/app/audio/audiovisualwaveform.cpp
+++ b/app/audio/audiovisualwaveform.cpp
@@ -193,38 +193,12 @@ void AudioVisualWaveform::OverwriteSilence(const rational &start, const rational
   }
 }
 
-void AudioVisualWaveform::Shift(const rational &from, const rational &to)
-{
-  for (auto it=mipmapped_data_.begin(); it!=mipmapped_data_.end(); it++) {
-    rational rate = it->first;
-    double rate_dbl = rate.toDouble();
-    Sample& data = it->second;
-
-    int from_index = time_to_samples(from, rate_dbl);
-    int to_index = time_to_samples(to, rate_dbl);
-
-    if (from_index == to_index) {
-      continue;
-    }
-
-    if (from_index >= data.size()) {
-      continue;
-    }
-
-    if (from_index > to_index) {
-      // Shifting backwards <-
-      data.remove(to_index, from_index - to_index);
-    } else {
-      // Shifting forwards ->
-      data.insert(from_index, to_index - from_index, {0, 0});
-    }
-  }
-
-  length_ = qMax(rational(0), length_ + (to-from));
-}
-
 void AudioVisualWaveform::TrimIn(const rational &length)
 {
+  if (length == 0) {
+    return;
+  }
+
   for (auto it=mipmapped_data_.begin(); it!=mipmapped_data_.end(); it++) {
     rational rate = it->first;
     double rate_dbl = rate.toDouble();
@@ -255,6 +229,40 @@ AudioVisualWaveform AudioVisualWaveform::Mid(const rational &offset) const
   return mid;
 }
 
+AudioVisualWaveform AudioVisualWaveform::Mid(const rational &offset, const rational &length) const
+{
+  AudioVisualWaveform mid  = *this;
+
+  mid.TrimRange(offset, length);
+
+  return mid;
+}
+
+void AudioVisualWaveform::Resize(const rational &length)
+{
+  if (length_ == length) {
+    return;
+  }
+
+  for (auto it=mipmapped_data_.begin(); it!=mipmapped_data_.end(); it++) {
+    rational rate = it->first;
+    double rate_dbl = rate.toDouble();
+    Sample& data = it->second;
+
+    int chop_length = time_to_samples(length, rate_dbl);
+
+    data.resize(chop_length);
+  }
+
+  length_ = length;
+}
+
+void AudioVisualWaveform::TrimRange(const rational &in, const rational &length)
+{
+  TrimIn(in);
+  Resize(length);
+}
+
 AudioVisualWaveform::Sample AudioVisualWaveform::GetSummaryFromTime(const rational &start, const rational &length) const
 {
   // Find mipmap that requires
diff --git a/app/audio/audiovisualwaveform.h b/app/audio/audiovisualwaveform.h
index 389f72980..e2202b469 100644
--- a/app/audio/audiovisualwaveform.h
+++ b/app/audio/audiovisualwaveform.h
@@ -90,11 +90,14 @@ public:
 
   void OverwriteSilence(const rational &start, const rational &length);
 
-  void Shift(const rational& from, const rational& to);
-
   void TrimIn(const rational &length);
 
   AudioVisualWaveform Mid(const rational &offset) const;
+  AudioVisualWaveform Mid(const rational &offset, const rational &length) const;
+
+  void Resize(const rational &length);
+
+  void TrimRange(const rational &in, const rational &length);
 
   Sample GetSummaryFromTime(const rational& start, const rational& length) const;
 
diff --git a/app/node/block/clip/clip.cpp b/app/node/block/clip/clip.cpp
index e0aaa25bf..6a61b73ac 100644
--- a/app/node/block/clip/clip.cpp
+++ b/app/node/block/clip/clip.cpp
@@ -38,7 +38,8 @@ const QString ClipBlock::kMaintainAudioPitchInput = QStringLiteral("maintain_aud
 ClipBlock::ClipBlock() :
   in_transition_(nullptr),
   out_transition_(nullptr),
-  connected_viewer_(nullptr)
+  connected_viewer_(nullptr),
+  autocache_(false)
 {
   AddInput(kMediaInInput, NodeValue::kRational, InputFlags(kInputFlagNotConnectable | kInputFlagNotKeyframable));
   SetInputProperty(kMediaInInput, QStringLiteral("view"), RationalSlider::kTime);
@@ -188,8 +189,14 @@ void ClipBlock::InvalidateCache(const TimeRange& range, const QString& from, int
         TimeRange max_range = InputTimeAdjustment(from, element, TimeRange(0, length()));
         if (type == Track::kVideo) {
           emit connected->thumbnail_cache()->Request(range.Intersected(max_range), PlaybackCache::kPreviewsOnly);
+          if (autocache_) {
+            emit connected->video_frame_cache()->Request(range.Intersected(max_range), PlaybackCache::kPreviewsOnly);
+          }
         } else if (type == Track::kAudio) {
-          emit connected->audio_playback_cache()->Request(range.Intersected(max_range), PlaybackCache::kPreviewsOnly);
+          emit connected->waveform_cache()->Request(range.Intersected(max_range), PlaybackCache::kPreviewsOnly);
+          if (autocache_) {
+            emit connected->audio_playback_cache()->Request(range.Intersected(max_range), PlaybackCache::kPreviewsOnly);
+          }
         }
       }
     }
@@ -251,7 +258,7 @@ void ClipBlock::InputConnectedEvent(const QString &input, int element, Node *out
 
   if (input == kBufferIn) {
     connect(output->thumbnail_cache(), &FrameHashCache::Validated, this, &Block::PreviewChanged);
-    connect(output->audio_playback_cache(), &AudioPlaybackCache::WaveformUpdated, this, &Block::PreviewChanged);
+    connect(output->waveform_cache(), &AudioPlaybackCache::Validated, this, &Block::PreviewChanged);
   }
 }
 
@@ -261,7 +268,7 @@ void ClipBlock::InputDisconnectedEvent(const QString &input, int element, Node *
 
   if (input == kBufferIn) {
     disconnect(output->thumbnail_cache(), &FrameHashCache::Validated, this, &Block::PreviewChanged);
-    disconnect(output->audio_playback_cache(), &AudioPlaybackCache::WaveformUpdated, this, &Block::PreviewChanged);
+    disconnect(output->waveform_cache(), &AudioPlaybackCache::Validated, this, &Block::PreviewChanged);
   }
 }
 
@@ -324,7 +331,10 @@ void ClipBlock::ConnectedToPreviewEvent()
           emit connected->thumbnail_cache()->Request(r, PlaybackCache::kPreviewsOnly);
         }
       } else if (type == Track::kAudio) {
-        //emit connected->audio_playback_cache()->Request(range.Intersected(max_range), PlaybackCache::kPreviewsOnly);
+        TimeRangeList invalid = connected->waveform_cache()->GetInvalidatedRanges(max_range);
+        for (const TimeRange &r : invalid) {
+          emit connected->waveform_cache()->Request(r, PlaybackCache::kPreviewsOnly);
+        }
       }
     }
   }
diff --git a/app/node/block/clip/clip.h b/app/node/block/clip/clip.h
index feff9c4d2..b43bfde09 100644
--- a/app/node/block/clip/clip.h
+++ b/app/node/block/clip/clip.h
@@ -128,10 +128,10 @@ public:
     }
   }
 
-  const AudioVisualWaveform *waveform()
+  const AudioWaveformCache *waveform()
   {
     if (Node *n = GetConnectedOutput(kBufferIn)) {
-      return &n->audio_playback_cache()->visual();
+      return n->waveform_cache();
     } else {
       return nullptr;
     }
@@ -185,6 +185,8 @@ private:
 
   ViewerOutput *connected_viewer_;
 
+  bool autocache_;
+
 private:
   rational last_media_in_;
 
diff --git a/app/node/node.cpp b/app/node/node.cpp
index 8f18fb996..7d3bc7345 100644
--- a/app/node/node.cpp
+++ b/app/node/node.cpp
@@ -56,6 +56,7 @@ Node::Node() :
   video_cache_ = new FrameHashCache(this);
   thumbnail_cache_ = new FrameHashCache(this);
   audio_cache_ = new AudioPlaybackCache(this);
+  waveform_cache_ = new AudioWaveformCache(this);
 }
 
 Node::~Node()
diff --git a/app/node/node.h b/app/node/node.h
index 13beb3d1c..6a96f97a1 100644
--- a/app/node/node.h
+++ b/app/node/node.h
@@ -40,6 +40,7 @@
 #include "node/param.h"
 #include "render/audioparams.h"
 #include "render/audioplaybackcache.h"
+#include "render/audiowaveformcache.h"
 #include "render/framehashcache.h"
 #include "render/job/generatejob.h"
 #include "render/job/samplejob.h"
@@ -236,6 +237,11 @@ public:
     return audio_cache_;
   }
 
+  AudioWaveformCache* waveform_cache() const
+  {
+    return waveform_cache_;
+  }
+
   virtual TimeRange GetVideoCacheRange() const { return TimeRange(); }
   virtual TimeRange GetAudioCacheRange() const { return TimeRange(); }
 
@@ -1413,6 +1419,7 @@ private:
   FrameHashCache *thumbnail_cache_;
 
   AudioPlaybackCache *audio_cache_;
+  AudioWaveformCache *waveform_cache_;
 
 private slots:
   /**
diff --git a/app/node/output/viewer/viewer.cpp b/app/node/output/viewer/viewer.cpp
index 9330e414d..84492de8f 100644
--- a/app/node/output/viewer/viewer.cpp
+++ b/app/node/output/viewer/viewer.cpp
@@ -37,7 +37,9 @@ const QString ViewerOutput::kSamplesInput = QStringLiteral("samples_in");
 ViewerOutput::ViewerOutput(bool create_buffer_inputs, bool create_default_streams) :
   last_length_(0),
   video_length_(0),
-  audio_length_(0)
+  audio_length_(0),
+  autocache_input_video_(false),
+  autocache_input_audio_(false)
 {
   AddInput(kVideoParamsInput, NodeValue::kVideoParams, InputFlags(kInputFlagNotConnectable | kInputFlagNotKeyframable | kInputFlagArray | kInputFlagHidden));
 
@@ -219,6 +221,22 @@ void ViewerOutput::InvalidateCache(const TimeRange& range, const QString& from,
 {
   Q_UNUSED(element)
 
+  if (Node *connected = GetConnectedOutput(from, element)) {
+    if (from == kTextureInput) {
+      //emit connected->thumbnail_cache()->Request(range.Intersected(max_range), PlaybackCache::kPreviewsOnly);
+      if (autocache_input_video_) {
+        TimeRange max_range = InputTimeAdjustment(from, element, TimeRange(0, GetVideoLength()));
+        emit connected->video_frame_cache()->Request(range.Intersected(max_range), PlaybackCache::kPreviewsOnly);
+      }
+    } else if (from == kSamplesInput) {
+      TimeRange max_range = InputTimeAdjustment(from, element, TimeRange(0, GetAudioLength()));
+      emit connected->waveform_cache()->Request(range.Intersected(max_range), PlaybackCache::kPreviewsOnly);
+      if (autocache_input_audio_) {
+        emit connected->audio_playback_cache()->Request(range.Intersected(max_range), PlaybackCache::kPreviewsOnly);
+      }
+    }
+  }
+
   VerifyLength();
 
   super::InvalidateCache(range, from, element, options);
@@ -298,6 +316,8 @@ void ViewerOutput::InputConnectedEvent(const QString &input, int element, Node *
 {
   if (input == kTextureInput) {
     emit TextureInputChanged();
+  } else if (input == kSamplesInput) {
+    connect(output->waveform_cache(), &AudioWaveformCache::Validated, this, &ViewerOutput::ConnectedWaveformChanged);
   }
 
   super::InputConnectedEvent(input, element, output);
@@ -307,6 +327,8 @@ void ViewerOutput::InputDisconnectedEvent(const QString &input, int element, Nod
 {
   if (input == kTextureInput) {
     emit TextureInputChanged();
+  } else if (input == kSamplesInput) {
+    disconnect(output->waveform_cache(), &AudioWaveformCache::Validated, this, &ViewerOutput::ConnectedWaveformChanged);
   }
 
   super::InputDisconnectedEvent(input, element, output);
@@ -364,6 +386,17 @@ Node::ValueHint ViewerOutput::GetConnectedSampleValueHint()
   return GetValueHintForInput(kSamplesInput);
 }
 
+void ViewerOutput::ConnectedToPreviewEvent()
+{
+  if (Node *connected = GetConnectedOutput(kSamplesInput)) {
+    TimeRange max_range = InputTimeAdjustment(kSamplesInput, -1, TimeRange(0, GetAudioLength()));
+    TimeRangeList invalid = connected->waveform_cache()->GetInvalidatedRanges(max_range);
+    for (const TimeRange &r : invalid) {
+      emit connected->waveform_cache()->Request(r, PlaybackCache::kPreviewsOnly);
+    }
+  }
+}
+
 void ViewerOutput::InputValueChangedEvent(const QString &input, int element)
 {
   if (element == 0) {
diff --git a/app/node/output/viewer/viewer.h b/app/node/output/viewer/viewer.h
index dff2e8e7c..daca1d4a4 100644
--- a/app/node/output/viewer/viewer.h
+++ b/app/node/output/viewer/viewer.h
@@ -130,6 +130,15 @@ public:
     return GetVideoStreamCount() + GetAudioStreamCount() + GetSubtitleStreamCount();
   }
 
+  const AudioWaveformCache *GetConnectedWaveform()
+  {
+    if (Node *n = GetConnectedSampleOutput()) {
+      return n->waveform_cache();
+    } else {
+      return nullptr;
+    }
+  }
+
   bool HasEnabledVideoStreams() const;
   bool HasEnabledAudioStreams() const;
   bool HasEnabledSubtitleStreams() const;
@@ -173,6 +182,8 @@ public:
 
   virtual ValueHint GetConnectedSampleValueHint();
 
+  virtual void ConnectedToPreviewEvent() override;
+
   static const QString kVideoParamsInput;
   static const QString kAudioParamsInput;
   static const QString kSubtitleParamsInput;
@@ -198,6 +209,8 @@ signals:
 
   void SampleRateChanged(int sr);
 
+  void ConnectedWaveformChanged();
+
 public slots:
   void VerifyLength();
 
@@ -224,6 +237,9 @@ private:
 
   TimelinePoints *timeline_points_;
 
+  bool autocache_input_video_;
+  bool autocache_input_audio_;
+
 };
 
 }
diff --git a/app/node/project/footage/footage.cpp b/app/node/project/footage/footage.cpp
index 4a5e5f0a5..d38b610c0 100644
--- a/app/node/project/footage/footage.cpp
+++ b/app/node/project/footage/footage.cpp
@@ -63,6 +63,8 @@ Footage::Footage(const QString &filename) :
   check_timer->setInterval(5000);
   connect(check_timer, &QTimer::timeout, this, &Footage::CheckFootage);
   check_timer->start();
+
+  connect(this->waveform_cache(), &AudioWaveformCache::Validated, this, &ViewerOutput::ConnectedWaveformChanged);
 }
 
 void Footage::Retranslate()
diff --git a/app/node/project/serializer/serializer220403.cpp b/app/node/project/serializer/serializer220403.cpp
index 00e5dc25b..a78e11b5b 100644
--- a/app/node/project/serializer/serializer220403.cpp
+++ b/app/node/project/serializer/serializer220403.cpp
@@ -552,6 +552,8 @@ void ProjectSerializer220403::LoadNode(Node *node, XMLNodeData &xml_node_data, Q
           node->video_frame_cache()->SetUuid(reader->readElementText());
         } else if (reader->name() == QStringLiteral("thumb")) {
           node->thumbnail_cache()->SetUuid(reader->readElementText());
+        } else if (reader->name() == QStringLiteral("waveform")) {
+          node->waveform_cache()->SetUuid(reader->readElementText());
         } else {
           reader->skipCurrentElement();
         }
@@ -616,6 +618,7 @@ void ProjectSerializer220403::SaveNode(Node *node, QXmlStreamWriter *writer) con
   writer->writeTextElement(QStringLiteral("audio"), node->audio_playback_cache()->GetUuid().toString());
   writer->writeTextElement(QStringLiteral("video"), node->video_frame_cache()->GetUuid().toString());
   writer->writeTextElement(QStringLiteral("thumb"), node->thumbnail_cache()->GetUuid().toString());
+  writer->writeTextElement(QStringLiteral("waveform"), node->waveform_cache()->GetUuid().toString());
 
   writer->writeEndElement(); // caches
 
diff --git a/app/render/CMakeLists.txt b/app/render/CMakeLists.txt
index 8a37e1776..b19e98d0c 100644
--- a/app/render/CMakeLists.txt
+++ b/app/render/CMakeLists.txt
@@ -24,6 +24,8 @@ set(OLIVE_SOURCES
   render/audioparams.h
   render/audioplaybackcache.cpp
   render/audioplaybackcache.h
+  render/audiowaveformcache.cpp
+  render/audiowaveformcache.h
   render/color.cpp
   render/color.h
   render/colorprocessor.cpp
diff --git a/app/render/audioplaybackcache.cpp b/app/render/audioplaybackcache.cpp
index 55dba2268..6113a6fd9 100644
--- a/app/render/audioplaybackcache.cpp
+++ b/app/render/audioplaybackcache.cpp
@@ -48,9 +48,6 @@ void AudioPlaybackCache::SetParameters(const AudioParams &params)
   }
 
   params_ = params;
-  visual_.set_channel_count(params_.channel_count());
-
-  emit ParametersChanged();
 }
 
 void AudioPlaybackCache::WritePCM(const TimeRange &range, const TimeRangeList &valid_ranges, const SampleBuffer &samples)
@@ -62,23 +59,6 @@ void AudioPlaybackCache::WritePCM(const TimeRange &range, const TimeRangeList &v
   }
 }
 
-void AudioPlaybackCache::WriteWaveform(const TimeRange &range, const TimeRangeList &valid_ranges, const AudioVisualWaveform *waveform)
-{
-  // Write each valid range to the segments
-  foreach (const TimeRange& r, valid_ranges) {
-    // Write visual
-    if (waveform) {
-      visual_.OverwriteSums(*waveform, r.in(), r.in() - range.in(), r.length());
-    } else {
-      visual_.OverwriteSilence(r.in(), r.length());
-    }
-  }
-
-  if (!valid_ranges.isEmpty()) {
-    emit WaveformUpdated();
-  }
-}
-
 void AudioPlaybackCache::WriteSilence(const TimeRange &range)
 {
   // WritePCM will automatically fill non-existent bytes with silence, so we just have to send
diff --git a/app/render/audioplaybackcache.h b/app/render/audioplaybackcache.h
index 94f556037..6a7949482 100644
--- a/app/render/audioplaybackcache.h
+++ b/app/render/audioplaybackcache.h
@@ -68,18 +68,8 @@ public:
 
   void WritePCM(const TimeRange &range, const TimeRangeList &valid_ranges, const SampleBuffer &samples);
 
-  void WriteWaveform(const TimeRange &range, const TimeRangeList &valid_ranges, const AudioVisualWaveform *waveform);
-
   void WriteSilence(const TimeRange &range);
 
-  const AudioVisualWaveform &visual() const { return visual_; }
-  void set_visual(const AudioVisualWaveform &v) { visual_ = v; }
-
-signals:
-  void ParametersChanged();
-
-  void WaveformUpdated();
-
 private:
   bool WritePartOfSampleBuffer(const SampleBuffer &samples, const rational &write_start, const rational &buffer_start, const rational &length);
 
@@ -89,8 +79,6 @@ private:
 
   AudioParams params_;
 
-  AudioVisualWaveform visual_;
-
 };
 
 }
diff --git a/app/render/audiowaveformcache.cpp b/app/render/audiowaveformcache.cpp
new file mode 100644
index 000000000..ba3a0f506
--- /dev/null
+++ b/app/render/audiowaveformcache.cpp
@@ -0,0 +1,101 @@
+/***
+
+  Olive - Non-Linear Video Editor
+  Copyright (C) 2022 Olive Team
+
+  This program is free software: you can redistribute it and/or modify
+  it under the terms of the GNU General Public License as published by
+  the Free Software Foundation, either version 3 of the License, or
+  (at your option) any later version.
+
+  This program is distributed in the hope that it will be useful,
+  but WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+  GNU General Public License for more details.
+
+  You should have received a copy of the GNU General Public License
+  along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+***/
+
+#include "audiowaveformcache.h"
+
+namespace olive {
+
+AudioWaveformCache::AudioWaveformCache(QObject *parent) :
+  PlaybackCache{parent}
+{
+}
+
+void AudioWaveformCache::WriteWaveform(const TimeRange &range, const TimeRangeList &valid_ranges, const AudioVisualWaveform *waveform)
+{
+  // Write each valid range to the segments
+  foreach (const TimeRange& r, valid_ranges) {
+    // Write visual
+    TimeRangeList::util_remove(&waveforms_, r);
+
+    if (waveform) {
+      TimeRangeWithWaveform wv = r;
+      rational local_start = r.in() - range.in();
+      wv.waveform = waveform->Mid(local_start, r.length());
+      waveforms_.append(wv);
+    }
+
+    Validate(r);
+  }
+}
+
+void AudioWaveformCache::Draw(QPainter *painter, const QRect &rect, const double &scale, const rational &start_time) const
+{
+  rational end = start_time + rational::fromDouble(rect.width() / scale);
+  TimeRange draw_range(start_time, end);
+
+  foreach (const TimeRangeWithWaveform &wv, waveforms_) {
+    if (wv.OverlapsWith(draw_range)) {
+      rational substart = std::max(wv.in(), draw_range.in());
+      rational subend = std::min(wv.out(), draw_range.out());
+
+      QRect subrect = rect;
+      subrect.setLeft(subrect.left() + (substart - draw_range.in()).toDouble()*scale);
+      subrect.setWidth((subend - substart).toDouble()*scale);
+
+      rational local_start = substart - wv.in();
+      AudioVisualWaveform::DrawWaveform(painter, subrect, scale, wv.waveform, local_start);
+    }
+  }
+}
+
+AudioVisualWaveform::Sample AudioWaveformCache::GetSummaryFromTime(const rational &start, const rational &length) const
+{
+  QMap<rational, AudioVisualWaveform::Sample> sample;
+
+  TimeRange acquire(start, start+length);
+  foreach (const TimeRangeWithWaveform &wv, waveforms_) {
+    if (wv.OverlapsWith(acquire)) {
+      TimeRange this_range = wv.Intersected(acquire);
+      auto sum = wv.waveform.GetSummaryFromTime(this_range.in() - wv.in(), this_range.length());
+      sample.insert(this_range.in(), sum);
+    }
+  }
+
+  AudioVisualWaveform::Sample result;
+
+  for (auto it=sample.cbegin(); it!=sample.cend(); it++) {
+    result.append(it.value());
+  }
+
+  return result;
+}
+
+rational AudioWaveformCache::length() const
+{
+  rational len = 0;
+
+  foreach (const TimeRangeWithWaveform &wv, waveforms_) {
+    len = std::max(len, wv.out());
+  }
+
+  return len;
+}
+
+}
diff --git a/app/render/audiowaveformcache.h b/app/render/audiowaveformcache.h
new file mode 100644
index 000000000..0a27eb175
--- /dev/null
+++ b/app/render/audiowaveformcache.h
@@ -0,0 +1,85 @@
+/***
+
+  Olive - Non-Linear Video Editor
+  Copyright (C) 2022 Olive Team
+
+  This program is free software: you can redistribute it and/or modify
+  it under the terms of the GNU General Public License as published by
+  the Free Software Foundation, either version 3 of the License, or
+  (at your option) any later version.
+
+  This program is distributed in the hope that it will be useful,
+  but WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+  GNU General Public License for more details.
+
+  You should have received a copy of the GNU General Public License
+  along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+***/
+
+#ifndef AUDIOWAVEFORMCACHE_H
+#define AUDIOWAVEFORMCACHE_H
+
+#include "audio/audiovisualwaveform.h"
+#include "playbackcache.h"
+
+namespace olive {
+
+class AudioWaveformCache : public PlaybackCache
+{
+  Q_OBJECT
+public:
+  AudioWaveformCache(QObject *parent = nullptr);
+
+  void WriteWaveform(const TimeRange &range, const TimeRangeList &valid_ranges, const AudioVisualWaveform *waveform);
+
+  const AudioParams &GetParameters() const { return params_; }
+  void SetParameters(const AudioParams &p) { params_ = p; }
+
+  void Draw(QPainter* painter, const QRect &rect, const double &scale, const rational &start_time) const;
+
+  AudioVisualWaveform::Sample GetSummaryFromTime(const rational &start, const rational &length) const;
+
+  rational length() const;
+
+private:
+  class TimeRangeWithWaveform : public TimeRange
+  {
+  public:
+    TimeRangeWithWaveform() = default;
+    TimeRangeWithWaveform(const TimeRange &r) :
+      TimeRange(r)
+    {
+    }
+
+    void set_in(const rational& in)
+    {
+      waveform.TrimIn(in - this->in());
+      TimeRange::set_in(in);
+    }
+
+    void set_out(const rational& out)
+    {
+      waveform.Resize(out - this->in());
+      TimeRange::set_out(out);
+    }
+
+    void set_range(const rational& in, const rational& out)
+    {
+      waveform.TrimRange(in, out-in);
+      TimeRange::set_range(in, out);
+    }
+
+    AudioVisualWaveform waveform;
+  };
+
+  QVector<TimeRangeWithWaveform> waveforms_;
+
+  AudioParams params_;
+
+};
+
+}
+
+#endif // AUDIOWAVEFORMCACHE_H
diff --git a/app/render/previewautocacher.cpp b/app/render/previewautocacher.cpp
index ef48d6284..f395fa908 100644
--- a/app/render/previewautocacher.cpp
+++ b/app/render/previewautocacher.cpp
@@ -80,7 +80,7 @@ RenderTicketPtr PreviewAutoCacher::GetSingleFrame(const rational &t, RenderTicke
 
 RenderTicketPtr PreviewAutoCacher::GetRangeOfAudio(TimeRange range, RenderTicketPriority priority)
 {
-  return RenderAudio(copied_viewer_node_->GetConnectedSampleOutput(), range, PlaybackCache::kCacheOnly, priority);
+  return RenderAudio(copied_viewer_node_->GetConnectedSampleOutput(), range, PlaybackCache::kCacheOnly, priority, nullptr);
 }
 
 void PreviewAutoCacher::VideoInvalidatedFromCache(const TimeRange &range)
@@ -127,14 +127,17 @@ void PreviewAutoCacher::AudioRendered()
 
       SampleBuffer buf = watcher->Get().value<SampleBuffer>();
       node->audio_playback_cache()->SetParameters(buf.audio_params());
+      node->waveform_cache()->SetParameters(buf.audio_params());
 
       PlaybackCache::RequestType type = PlaybackCache::RequestType(watcher->property("type").toInt());
 
       if (type == PlaybackCache::kCacheOnly) {
         // WritePCM is tolerant to its buffer being null, it will just write silence instead
-        node->audio_playback_cache()->WritePCM(range,
-                                               valid_ranges,
-                                               watcher->Get().value<SampleBuffer>());
+        if (AudioPlaybackCache *cache = Node::ValueToPtr<AudioPlaybackCache>(watcher->property("cache"))) {
+          cache->WritePCM(range,
+                          valid_ranges,
+                          watcher->Get().value<SampleBuffer>());
+        }
       } else {
         // Detect if this audio was incomplete because it was waiting on a conform to finish
         if (watcher->GetTicket()->property("incomplete").toBool()) {
@@ -146,7 +149,9 @@ void PreviewAutoCacher::AudioRendered()
             d.needing_conform.insert(range);
           }
         } else {
-          node->audio_playback_cache()->WriteWaveform(range, valid_ranges, &waveform);
+          if (AudioWaveformCache *cache = Node::ValueToPtr<AudioWaveformCache>(watcher->property("cache"))) {
+            cache->WriteWaveform(range, valid_ranges, &waveform);
+          }
         }
       }
     }
@@ -320,16 +325,6 @@ void PreviewAutoCacher::InsertIntoCopyMap(Node *node, Node *copy)
 
 void PreviewAutoCacher::ConnectToNodeCache(Node *node)
 {
-  connect(node->video_frame_cache(),
-          &PlaybackCache::AutomaticChanged,
-          this,
-          &PreviewAutoCacher::VideoAutoCacheEnableChanged);
-
-  connect(node->audio_playback_cache(),
-          &PlaybackCache::AutomaticChanged,
-          this,
-          &PreviewAutoCacher::AudioAutoCacheEnableChanged);
-
   connect(node->video_frame_cache(),
           &PlaybackCache::Request,
           this,
@@ -345,32 +340,18 @@ void PreviewAutoCacher::ConnectToNodeCache(Node *node)
           this,
           &PreviewAutoCacher::AudioInvalidatedFromCache);
 
+  connect(node->waveform_cache(),
+          &PlaybackCache::Request,
+          this,
+          &PreviewAutoCacher::AudioInvalidatedFromCache);
+
   node->video_frame_cache()->LoadState();
   node->audio_playback_cache()->LoadState();
   node->thumbnail_cache()->LoadState();
-
-  // Copy invalidated ranges and start rendering if necessary
-  if (node->video_frame_cache()->IsAutomatic()) {
-    VideoAutoCacheEnableChangedFromNode(node, true);
-  }
-
-  if (node->audio_playback_cache()->IsAutomatic()) {
-    AudioAutoCacheEnableChangedFromNode(node, true);
-  }
 }
 
 void PreviewAutoCacher::DisconnectFromNodeCache(Node *node)
 {
-  disconnect(node->video_frame_cache(),
-             &PlaybackCache::AutomaticChanged,
-             this,
-             &PreviewAutoCacher::VideoAutoCacheEnableChanged);
-
-  disconnect(node->audio_playback_cache(),
-             &PlaybackCache::AutomaticChanged,
-             this,
-             &PreviewAutoCacher::AudioAutoCacheEnableChanged);
-
   disconnect(node->video_frame_cache(),
              &PlaybackCache::Request,
              this,
@@ -386,17 +367,14 @@ void PreviewAutoCacher::DisconnectFromNodeCache(Node *node)
              this,
              &PreviewAutoCacher::AudioInvalidatedFromCache);
 
+  disconnect(node->waveform_cache(),
+             &PlaybackCache::Request,
+             this,
+             &PreviewAutoCacher::AudioInvalidatedFromCache);
+
   node->video_frame_cache()->SaveState();
   node->audio_playback_cache()->SaveState();
   node->thumbnail_cache()->SaveState();
-
-  if (node->video_frame_cache()->IsAutomatic()) {
-    VideoAutoCacheEnableChangedFromNode(node, false);
-  }
-
-  if (node->audio_playback_cache()->IsAutomatic()) {
-    AudioAutoCacheEnableChangedFromNode(node, false);
-  }
 }
 
 void PreviewAutoCacher::UpdateGraphChangeValue()
@@ -474,24 +452,6 @@ void PreviewAutoCacher::AudioInvalidatedFromNode(Node *node, const TimeRange &ra
   StartCachingAudioRange(node, range, type);
 }
 
-void PreviewAutoCacher::VideoAutoCacheEnableChangedFromNode(Node *node, bool e)
-{
-  if (e) {
-    VideoInvalidatedList(node, node->video_frame_cache()->GetInvalidatedRanges(node->GetVideoCacheRange()));
-  } else {
-    CancelVideoTasks(node);
-  }
-}
-
-void PreviewAutoCacher::AudioAutoCacheEnableChangedFromNode(Node *node, bool e)
-{
-  if (e) {
-    AudioInvalidatedList(node, node->audio_playback_cache()->GetInvalidatedRanges(node->GetAudioCacheRange()));
-  } else {
-    CancelAudioTasks(node);
-  }
-}
-
 void PreviewAutoCacher::SetPlayhead(const rational &playhead)
 {
   cache_range_ = TimeRange(playhead - OLIVE_CONFIG("DiskCacheBehind").value<rational>(),
@@ -657,7 +617,13 @@ void PreviewAutoCacher::TryRender()
 
       // Start job
       if (Node *copy = copy_map_.value(d.node)) {
-        RenderAudio(copy, d.range, d.type, RenderTicketPriority::kNormal);
+        PlaybackCache *cache;
+        if (d.type == PlaybackCache::kPreviewsOnly) {
+          cache = d.node->waveform_cache();
+        } else {
+          cache = d.node->audio_playback_cache();
+        }
+        RenderAudio(copy, d.range, d.type, RenderTicketPriority::kNormal, cache);
       } else {
         qCritical() << "Failed to find node copy for audio job";
       }
@@ -705,12 +671,13 @@ RenderTicketWatcher* PreviewAutoCacher::RenderFrame(Node *node, const rational&
   return watcher;
 }
 
-RenderTicketPtr PreviewAutoCacher::RenderAudio(Node *node, const TimeRange &r, PlaybackCache::RequestType type, RenderTicketPriority priority)
+RenderTicketPtr PreviewAutoCacher::RenderAudio(Node *node, const TimeRange &r, PlaybackCache::RequestType type, RenderTicketPriority priority, PlaybackCache *cache)
 {
   RenderTicketWatcher* watcher = new RenderTicketWatcher();
   watcher->setProperty("job", QVariant::fromValue(last_update_time_));
   watcher->setProperty("node", Node::PtrToValue(node));
   watcher->setProperty("type", type);
+  watcher->setProperty("cache", Node::PtrToValue(cache));
   connect(watcher, &RenderTicketWatcher::Finished, this, &PreviewAutoCacher::AudioRendered);
   audio_tasks_.insert(watcher, r);
 
@@ -720,6 +687,7 @@ RenderTicketPtr PreviewAutoCacher::RenderAudio(Node *node, const TimeRange &r, P
 
   rap.generate_waveforms = (type == PlaybackCache::kPreviewsOnly);
   rap.priority = priority;
+  rap.clamp = false;
 
   RenderTicketPtr ticket = RenderManager::instance()->RenderAudio(rap);
   watcher->SetTicket(ticket);
@@ -744,20 +712,6 @@ void PreviewAutoCacher::ConformFinished()
   }
 }
 
-void PreviewAutoCacher::VideoAutoCacheEnableChanged(bool e)
-{
-  FrameHashCache *cache = static_cast<FrameHashCache*>(sender());
-
-  VideoAutoCacheEnableChangedFromNode(cache->parent(), e);
-}
-
-void PreviewAutoCacher::AudioAutoCacheEnableChanged(bool e)
-{
-  AudioPlaybackCache *cache = static_cast<AudioPlaybackCache*>(sender());
-
-  AudioAutoCacheEnableChangedFromNode(cache->parent(), e);
-}
-
 void PreviewAutoCacher::CacheProxyTaskCancelled()
 {
   pending_video_jobs_.clear();
diff --git a/app/render/previewautocacher.h b/app/render/previewautocacher.h
index f987dfe46..1256d8106 100644
--- a/app/render/previewautocacher.h
+++ b/app/render/previewautocacher.h
@@ -105,7 +105,7 @@ private:
 
   RenderTicketWatcher *RenderFrame(Node *node, const rational &time, PlaybackCache::RequestType type, RenderTicketPriority priority, FrameHashCache *cache);
 
-  RenderTicketPtr RenderAudio(Node *node, const TimeRange &range, PlaybackCache::RequestType type, RenderTicketPriority priority);
+  RenderTicketPtr RenderAudio(Node *node, const TimeRange &range, PlaybackCache::RequestType type, RenderTicketPriority priority, PlaybackCache *cache);
 
   /**
    * @brief Process all changes to internal NodeGraph copy
@@ -142,9 +142,6 @@ private:
   void VideoInvalidatedFromNode(Node *node, const olive::TimeRange &range, PlaybackCache::RequestType type);
   void AudioInvalidatedFromNode(Node *node, const olive::TimeRange &range, PlaybackCache::RequestType type);
 
-  void VideoAutoCacheEnableChangedFromNode(Node *node, bool e);
-  void AudioAutoCacheEnableChangedFromNode(Node *node, bool e);
-
   class QueuedJob {
   public:
     enum Type {
@@ -264,10 +261,6 @@ private slots:
 
   void ConformFinished();
 
-  void VideoAutoCacheEnableChanged(bool e);
-
-  void AudioAutoCacheEnableChanged(bool e);
-
   void CacheProxyTaskCancelled();
 
 };
diff --git a/app/render/rendermanager.cpp b/app/render/rendermanager.cpp
index 09d20df00..b86cc64ea 100644
--- a/app/render/rendermanager.cpp
+++ b/app/render/rendermanager.cpp
@@ -112,6 +112,7 @@ RenderTicketPtr RenderManager::RenderAudio(const RenderAudioParams &params)
   ticket->setProperty("time", QVariant::fromValue(params.range));
   ticket->setProperty("type", kTypeAudio);
   ticket->setProperty("enablewaveforms", params.generate_waveforms);
+  ticket->setProperty("clamp", params.clamp);
   ticket->setProperty("aparam", QVariant::fromValue(params.audio_params));
 
   AddTicket(ticket, params.priority);
diff --git a/app/render/rendermanager.h b/app/render/rendermanager.h
index 6ef2a503a..6bbe3ba17 100644
--- a/app/render/rendermanager.h
+++ b/app/render/rendermanager.h
@@ -129,6 +129,7 @@ public:
       audio_params = aparam;
       generate_waveforms = false;
       priority = RenderTicketPriority::kNormal;
+      clamp = true;
     }
 
     Node *node;
@@ -136,6 +137,7 @@ public:
     AudioParams audio_params;
     bool generate_waveforms;
     RenderTicketPriority priority;
+    bool clamp;
   };
 
   /**
diff --git a/app/render/renderprocessor.cpp b/app/render/renderprocessor.cpp
index f2c920422..f774b07af 100644
--- a/app/render/renderprocessor.cpp
+++ b/app/render/renderprocessor.cpp
@@ -216,7 +216,9 @@ void RenderProcessor::Run()
 
     SampleBuffer samples = sample_val.toSamples();
     if (samples.is_allocated()) {
-      samples.clamp();
+      if (ticket_->property("clamp").toBool()) {
+        samples.clamp();
+      }
 
       if (ticket_->property("enablewaveforms").toBool()) {
         AudioVisualWaveform vis;
diff --git a/app/widget/audiomonitor/audiomonitor.cpp b/app/widget/audiomonitor/audiomonitor.cpp
index 8e7c945f5..cfc2ae781 100644
--- a/app/widget/audiomonitor/audiomonitor.cpp
+++ b/app/widget/audiomonitor/audiomonitor.cpp
@@ -93,11 +93,12 @@ void AudioMonitor::PushSampleBuffer(const SampleBuffer &d)
   SetUpdateLoop(true);
 }
 
-void AudioMonitor::StartWaveform(const AudioVisualWaveform *waveform, const rational &start, int playback_speed)
+void AudioMonitor::StartWaveform(const AudioWaveformCache *waveform, const rational &start, int playback_speed)
 {
   Stop();
 
-  if (start >= waveform->length()) {
+  waveform_length_ = waveform->length();
+  if (start >= waveform_length_) {
     return;
   }
 
@@ -239,7 +240,7 @@ void AudioMonitor::paintGL()
     if (waveform_) {
       UpdateValuesFromWaveform(v, delta_time);
 
-      if (waveform_time_ >= waveform_->length()) {
+      if (waveform_time_ >= waveform_length_) {
         Stop();
       }
     }
diff --git a/app/widget/audiomonitor/audiomonitor.h b/app/widget/audiomonitor/audiomonitor.h
index d29b74491..cf5d2e8f0 100644
--- a/app/widget/audiomonitor/audiomonitor.h
+++ b/app/widget/audiomonitor/audiomonitor.h
@@ -28,7 +28,7 @@
 #include "audio/audiovisualwaveform.h"
 #include "common/define.h"
 #include "render/audioparams.h"
-#include "render/audioplaybackcache.h"
+#include "render/audiowaveformcache.h"
 
 namespace olive {
 
@@ -45,7 +45,7 @@ public:
     return waveform_;
   }
 
-  static void StartWaveformOnAll(const AudioVisualWaveform *waveform, const rational& start, int playback_speed)
+  static void StartWaveformOnAll(const AudioWaveformCache *waveform, const rational& start, int playback_speed)
   {
     foreach (AudioMonitor *m, instances_) {
       m->StartWaveform(waveform, start, playback_speed);
@@ -73,7 +73,7 @@ public slots:
 
   void PushSampleBuffer(const SampleBuffer &samples);
 
-  void StartWaveform(const AudioVisualWaveform *waveform, const rational& start, int playback_speed);
+  void StartWaveform(const AudioWaveformCache *waveform, const rational& start, int playback_speed);
 
 protected:
   virtual void paintGL() override;
@@ -97,8 +97,9 @@ private:
 
   qint64 last_time_;
 
-  const AudioVisualWaveform* waveform_;
+  const AudioWaveformCache* waveform_;
   rational waveform_time_;
+  rational waveform_length_;
 
   int playback_speed_;
 
diff --git a/app/widget/timelinewidget/tool/pointer.cpp b/app/widget/timelinewidget/tool/pointer.cpp
index d0e066493..a05311395 100644
--- a/app/widget/timelinewidget/tool/pointer.cpp
+++ b/app/widget/timelinewidget/tool/pointer.cpp
@@ -699,7 +699,8 @@ void PointerTool::FinishDrag(TimelineViewMouseEvent *event)
         // Place the copy instead of the original block
         block = static_cast<Block*>(Node::CopyNodeInGraph(block, command));
         if (ClipBlock *new_clip = dynamic_cast<ClipBlock*>(block)) {
-          new_clip->set_waveform(static_cast<ClipBlock*>(p.block)->waveform());
+          qDebug() << "FIXME: Copy clip stub"; Q_UNUSED(new_clip)
+          //new_clip->set_waveform(static_cast<ClipBlock*>(p.block)->waveform());
         }
       }
 
diff --git a/app/widget/timelinewidget/undo/timelineundosplit.cpp b/app/widget/timelinewidget/undo/timelineundosplit.cpp
index 74626750c..3900d2b7b 100644
--- a/app/widget/timelinewidget/undo/timelineundosplit.cpp
+++ b/app/widget/timelinewidget/undo/timelineundosplit.cpp
@@ -44,7 +44,10 @@ void BlockSplitCommand::redo()
 
   if (ClipBlock *new_clip = dynamic_cast<ClipBlock*>(new_block_)) {
     ClipBlock *old_clip = static_cast<ClipBlock*>(block_);
-    new_clip->set_waveform(old_clip->waveform());
+    qDebug() << "FIXME: Copy waveform stub";
+    Q_UNUSED(old_clip)
+    Q_UNUSED(new_clip)
+    //new_clip->set_waveform(old_clip->waveform());
   }
 
   // Determine our new lengths
diff --git a/app/widget/timelinewidget/view/timelineview.cpp b/app/widget/timelinewidget/view/timelineview.cpp
index a11a449ba..7c105e2a8 100644
--- a/app/widget/timelinewidget/view/timelineview.cpp
+++ b/app/widget/timelinewidget/view/timelineview.cpp
@@ -558,11 +558,11 @@ void TimelineView::DrawBlock(QPainter *painter, bool foreground, Block *block, q
 
         // Draw waveform
         if (clip->GetTrackType() == Track::kAudio && show_waveforms_) {
-          if (const AudioVisualWaveform *wave = clip->waveform()) {
+          if (const AudioWaveformCache *wave = clip->waveform()) {
             rational waveform_start = SceneToTime(block_left - block_in, GetScale(), connected_track_list_->parent()->GetAudioParams().sample_rate_as_time_base()) + media_in;
             painter->setPen(shadow_color);
 
-            AudioVisualWaveform::DrawWaveform(painter, preview_rect, this->GetScale(), *wave, waveform_start);
+            wave->Draw(painter, preview_rect, this->GetScale(), waveform_start);
           }
         }
 
diff --git a/app/widget/viewer/audiowaveformview.cpp b/app/widget/viewer/audiowaveformview.cpp
index 92dc7e500..8092cb224 100644
--- a/app/widget/viewer/audiowaveformview.cpp
+++ b/app/widget/viewer/audiowaveformview.cpp
@@ -47,13 +47,13 @@ AudioWaveformView::AudioWaveformView(QWidget *parent) :
   setAlignment(Qt::AlignLeft | Qt::AlignTop);
 }
 
-void AudioWaveformView::SetViewer(AudioPlaybackCache *playback)
+void AudioWaveformView::SetViewer(ViewerOutput *playback)
 {
   if (playback_) {
     pool_.clear();
     pool_.waitForDone();
 
-    disconnect(playback_, &AudioPlaybackCache::Validated, this, static_cast<void(AudioWaveformView::*)()>(&AudioWaveformView::update));
+    disconnect(playback_, &ViewerOutput::ConnectedWaveformChanged, this, static_cast<void(AudioWaveformView::*)()>(&AudioWaveformView::update));
 
     SetTimebase(0);
   }
@@ -61,9 +61,9 @@ void AudioWaveformView::SetViewer(AudioPlaybackCache *playback)
   playback_ = playback;
 
   if (playback_) {
-    connect(playback_, &AudioPlaybackCache::Validated, this, static_cast<void(AudioWaveformView::*)()>(&AudioWaveformView::update));
+    connect(playback_, &ViewerOutput::ConnectedWaveformChanged, this, static_cast<void(AudioWaveformView::*)()>(&AudioWaveformView::update));
 
-    SetTimebase(playback_->GetParameters().sample_rate_as_time_base());
+    SetTimebase(playback_->GetAudioParams().sample_rate_as_time_base());
   }
 }
 
@@ -75,8 +75,12 @@ void AudioWaveformView::drawForeground(QPainter *p, const QRectF &rect)
     return;
   }
 
-  const AudioParams& params = playback_->GetParameters();
+  const AudioWaveformCache *wave = playback_->GetConnectedWaveform();
+  if (!wave) {
+    return;
+  }
 
+  const AudioParams& params = wave->GetParameters();
   if (!params.is_valid()) {
     return;
   }
@@ -86,7 +90,7 @@ void AudioWaveformView::drawForeground(QPainter *p, const QRectF &rect)
 
   // Draw waveform
   p->setPen(QColor(64, 255, 160)); // FIXME: Hardcoded color
-  AudioVisualWaveform::DrawWaveform(p, rect.toRect(), GetScale(), playback_->visual(), SceneToTime(GetScroll()));
+  wave->Draw(p, rect.toRect(), GetScale(), SceneToTime(GetScroll()));
 
   // Draw playhead
   p->setPen(PLAYHEAD_COLOR);
diff --git a/app/widget/viewer/audiowaveformview.h b/app/widget/viewer/audiowaveformview.h
index 970cb07ad..73162a06a 100644
--- a/app/widget/viewer/audiowaveformview.h
+++ b/app/widget/viewer/audiowaveformview.h
@@ -36,7 +36,7 @@ class AudioWaveformView : public SeekableWidget
 public:
   AudioWaveformView(QWidget* parent = nullptr);
 
-  void SetViewer(AudioPlaybackCache *playback);
+  void SetViewer(ViewerOutput *playback);
 
 protected:
   virtual void drawForeground(QPainter *painter, const QRectF &rect) override;
@@ -44,7 +44,7 @@ protected:
 private:
   QThreadPool pool_;
 
-  AudioPlaybackCache *playback_;
+  ViewerOutput *playback_;
 
 };
 
diff --git a/app/widget/viewer/viewer.cpp b/app/widget/viewer/viewer.cpp
index d0ad7d6e0..371f1e89e 100644
--- a/app/widget/viewer/viewer.cpp
+++ b/app/widget/viewer/viewer.cpp
@@ -232,7 +232,7 @@ void ViewerWidget::ConnectNodeEvent(ViewerOutput *n)
 
   UpdateStack();
 
-  waveform_view_->SetViewer(GetConnectedNode()->audio_playback_cache());
+  waveform_view_->SetViewer(GetConnectedNode());
   waveform_view_->ConnectTimelinePoints(GetConnectedNode()->GetTimelinePoints());
 
   UpdateRendererVideoParameters();
@@ -947,7 +947,7 @@ void ViewerWidget::FinishPlayPreprocess()
     }
     prequeued_audio_.clear();
 
-    AudioMonitor::StartWaveformOnAll(&GetConnectedNode()->audio_playback_cache()->visual(),
+    AudioMonitor::StartWaveformOnAll(GetConnectedNode()->GetConnectedWaveform(),
                                      GetTime(), playback_speed_);
   }