okay maybe not

2020-11-08 00:47:59 +11:00
parent 83cefbd7c7
commit 6ecdb02fd0
24 changed files with 393 additions and 388 deletions
@@ -0,0 +1,83 @@
+#ifndef STILLIMAGECACHE_H
+#define STILLIMAGECACHE_H
+
+#include <QHash>
+
+#include "common/rational.h"
+#include "project/item/footage/stream.h"
+#include "render/backend/renderer.h"
+
+OLIVE_NAMESPACE_ENTER
+
+class StillImageCache
+{
+public:
+  struct Entry {
+    Renderer::TexturePtr texture;
+    StreamPtr stream;
+    QString colorspace;
+    bool alpha_is_associated;
+    int divider;
+    rational time;
+  };
+
+  QMutex* mutex()
+  {
+    return &mutex_;
+  }
+
+  const QVector<Entry>& entries() const
+  {
+    return entries_;
+  }
+
+  const QVector<Entry>& pending() const
+  {
+    return pending_;
+  }
+
+  static bool CompareEntryMetadata(const Entry& a, const Entry& b)
+  {
+    return (a.stream == b.stream
+            && a.colorspace == b.colorspace
+            && a.alpha_is_associated == b.alpha_is_associated
+            && a.divider == b.divider
+            && a.time == b.time);
+  }
+
+  void PushPending(const Entry& e)
+  {
+    pending_.prepend(e);
+  }
+
+  void PushEntry(const Entry& e)
+  {
+    entries_.prepend(e);
+
+    if (entries_.size() > 8) {
+      entries_.removeLast();
+    }
+  }
+
+  void RemovePending(const Entry& e)
+  {
+    for (int i=0; i<pending_.size(); i++) {
+      if (CompareEntryMetadata(pending_.at(i), e)) {
+        pending_.removeAt(i);
+        break;
+      }
+    }
+  }
+
+private:
+  QMutex mutex_;
+
+  QVector<Entry> entries_;
+
+  QVector<Entry> pending_;
+
+};
+
+OLIVE_NAMESPACE_EXIT
+
+#endif // STILLIMAGECACHE_H