implemented separate waveform cache

2022-05-29 17:52:35 -07:00
parent 826090b621
commit 2f7dc3c98b
28 changed files with 381 additions and 178 deletions
@@ -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;
+}
+
+}