From 6a0cb5bdf42dc61d4e75ac471edd6f7f8d5eec94 Mon Sep 17 00:00:00 2001
From: Nikolaj Olsson <nikse.dk@gmail.com>
Date: Thu, 4 Aug 2016 22:41:37 +0200
Subject: [PATCH] Remember scene changes

---
 libse/LibSE.csproj         |  1 +
 libse/SceneChangeHelper.cs | 52 ++++++++++++++++++++++++++++++++++++++
 src/Forms/Main.cs          |  5 ++++
 3 files changed, 58 insertions(+)
 create mode 100644 libse/SceneChangeHelper.cs

diff --git a/libse/LibSE.csproj b/libse/LibSE.csproj
index d19fe2633..54bb831af 100644
--- a/libse/LibSE.csproj
+++ b/libse/LibSE.csproj
@@ -180,6 +180,7 @@
     <Compile Include="RealFFT.cs" />
     <Compile Include="RegistryUtil.cs" />
     <Compile Include="RichTextToPlainText.cs" />
+    <Compile Include="SceneChangeHelper.cs" />
     <Compile Include="Settings.cs" />
     <Compile Include="Interfaces\IDoSpell.cs" />
     <Compile Include="SpellCheck\SpellCheckWord.cs" />
diff --git a/libse/SceneChangeHelper.cs b/libse/SceneChangeHelper.cs
new file mode 100644
index 000000000..f84e6d49a
--- /dev/null
+++ b/libse/SceneChangeHelper.cs
@@ -0,0 +1,52 @@
+using System.Collections.Generic;
+using System.Globalization;
+using System.IO;
+using System.Text;
+
+namespace Nikse.SubtitleEdit.Core
+{
+    public static class SceneChangeHelper
+    {
+
+        public static string GetSceneChangesFileName(string videoFileName)
+        {
+            var fileName = WavePeakGenerator.GetPeakWaveFileName(videoFileName);
+            return Path.GetFileNameWithoutExtension(fileName) + ".scenechanges";
+        }
+
+        public static List<double> FromDisk(string videoFileName)
+        {
+            var list = new List<double>();
+            var sceneChangesFileName = GetSceneChangesFileName(videoFileName);
+            if (!File.Exists(sceneChangesFileName))
+                return list;
+
+            foreach (var line in File.ReadLines(sceneChangesFileName))
+            {
+                if (!string.IsNullOrWhiteSpace(line))
+                {
+                    list.Add(double.Parse(line, CultureInfo.InvariantCulture));
+                }
+            }
+            return list;
+        }
+
+        public static void SaveSceneChangesInSeconds(string videoFileName, List<double> list)
+        {
+            var sb = new StringBuilder();
+            foreach (var d in list)
+            {
+                sb.AppendLine(d.ToString(CultureInfo.InvariantCulture));
+            }
+            File.WriteAllText(GetSceneChangesFileName(videoFileName), sb.ToString().Trim());
+        }
+
+        public static void DeleteSceneChangesInSeconds(string videoFileName)
+        {
+            var sceneChangesFileName = GetSceneChangesFileName(videoFileName);
+            if (File.Exists(sceneChangesFileName))
+                File.Delete(sceneChangesFileName);
+        }
+
+    }
+}
diff --git a/src/Forms/Main.cs b/src/Forms/Main.cs
index dfb79e4cb..768d36a6e 100644
--- a/src/Forms/Main.cs
+++ b/src/Forms/Main.cs
@@ -13183,6 +13183,7 @@ namespace Nikse.SubtitleEdit.Forms
                 {
                     audioVisualizer.WavePeaks = WavePeakData.FromDisk(peakWaveFileName);
                     audioVisualizer.Spectrogram = SpectrogramData.FromDisk(spectrogramFolder);
+                    audioVisualizer.SceneChanges = SceneChangeHelper.FromDisk(_videoFileName);
                     toolStripComboBoxWaveform_SelectedIndexChanged(null, null);
                     SetWaveformPosition(0, 0, 0);
                     timerWaveform.Start();
@@ -19668,6 +19669,7 @@ namespace Nikse.SubtitleEdit.Forms
                 if (form.ShowDialog(this) == DialogResult.OK)
                 {
                     audioVisualizer.SceneChanges = form.SceneChangesInSeconds;
+                    SceneChangeHelper.SaveSceneChangesInSeconds(_videoFileName, audioVisualizer.SceneChanges);
                     ShowStatus(string.Format(_language.XSceneChangesImported, form.SceneChangesInSeconds.Count));
                 }
             }
@@ -19676,7 +19678,10 @@ namespace Nikse.SubtitleEdit.Forms
         private void toolStripMenuItemRemoveSceneChanges_Click(object sender, EventArgs e)
         {
             if (audioVisualizer != null && audioVisualizer.SceneChanges != null)
+            {
                 audioVisualizer.SceneChanges = new List<double>();
+                SceneChangeHelper.DeleteSceneChangesInSeconds(_videoFileName);
+            }
         }
 
         private void toolStripMenuItemDurationBridgeGaps_Click(object sender, EventArgs e)