giant rendering overhaul and many small fixes

rendering/clipqueue.cpp

@@ -0,0 +1,95 @@
+/***
+
+    Olive - Non-Linear Video Editor
+    Copyright (C) 2019  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 "clipqueue.h"
+
+
+ClipQueue::ClipQueue()
+{
+
+}
+
+ClipQueue::~ClipQueue()
+{
+  clear();
+}
+
+void ClipQueue::lock()
+{
+  queue_lock.lock();
+}
+
+bool ClipQueue::tryLock()
+{
+  return queue_lock.tryLock();
+}
+
+void ClipQueue::unlock()
+{
+  queue_lock.unlock();
+}
+
+void ClipQueue::append(AVFrame *frame)
+{
+  queue.append(frame);
+}
+
+AVFrame *ClipQueue::at(int i)
+{
+  return queue.at(i);
+}
+
+AVFrame *ClipQueue::first()
+{
+  return queue.first();
+}
+
+AVFrame *ClipQueue::last()
+{
+  return queue.last();
+}
+
+void ClipQueue::removeFirst()
+{
+  removeAt(0);
+}
+
+void ClipQueue::removeLast()
+{
+  removeAt(queue.size()-1);
+}
+
+void ClipQueue::removeAt(int i)
+{
+  av_frame_free(&queue[i]);
+  queue.removeAt(i);
+}
+
+void ClipQueue::clear()
+{
+  while (queue.size() > 0) {
+    removeAt(0);
+  }
+}
+
+int ClipQueue::size()
+{
+  return queue.size();
+}