reveal in project, improved still detection and playback, fixed some ripple crashes

project/clip.cpp

@@ -126,13 +126,25 @@ void Clip::refresh() {
 	recalculateMaxLength();
 }
 
-void Clip::clear_queue() {
+void Clip::queue_clear() {
 	while (queue.size() > 0) {
 		av_frame_free(&queue.first());
 		queue.removeFirst();
 	}
 }
 
+void Clip::queue_remove_earliest() {
+	int earliest_frame = 0;
+	for (int i=1;i<queue.size();i++) {
+		// TODO/NOTE: this will not work on sped up AND reversed video
+		if (queue.at(i)->pts < queue.at(earliest_frame)->pts) {
+			earliest_frame = i;
+		}
+	}
+	av_frame_free(&queue[earliest_frame]);
+	queue.removeAt(earliest_frame);
+}
+
 Clip::~Clip() {
     if (open) {
 		close_clip(this);

project/clip.h

@@ -37,7 +37,6 @@ struct Clip
     void reset_audio();
 	void reset();
 	void refresh();
-	void clear_queue();
 	long get_timeline_in_with_transition();
 	long get_timeline_out_with_transition();
 	long getLength();
@@ -49,6 +48,10 @@ struct Clip
 	void refactor_frame_rate(ComboAction* ca, double multiplier, bool change_timeline_points);
 	Sequence* sequence;
 
+	// queue functions
+	void queue_clear();
+	void queue_remove_earliest();
+
 	// timeline variables (should be copied in copy())
     bool enabled;
     long clip_in;