First commit of brand new rewrite

project/sequence.cpp

@@ -0,0 +1,122 @@
+#include "sequence.h"
+
+#include "project/clip.h"
+
+#include <QDebug>
+
+Sequence::Sequence() {
+}
+
+Sequence::~Sequence() {
+}
+
+Clip& Sequence::new_clip() {
+	clips.append(Clip());
+	return clips[clips.size() - 1];
+}
+
+Clip& Sequence::insert_clip(const Clip& c) {
+	clips.append(c);
+	return clips[clips.size() - 1];
+}
+
+int Sequence::clip_count() {
+	return clips.count();
+}
+
+Clip& Sequence::get_clip(int i) {
+	return clips[i];
+}
+
+void Sequence::delete_clip(int i) {
+	// remove any potential link references to clip
+//	for (size_t j=0;j<clip_count();j++) {
+//		Clip* c = getClip(j);
+//		for (size_t k=0;k<c->linkedClips.size();k++) {
+//			if (c->linkedClips[k] == clips[i]) {
+//				c->linkedClips.erase(c->linkedClips.begin()+k);
+//			}
+//		}
+//	}
+
+	// finally remove from vector
+	clips.removeAt(i);
+}
+
+long Sequence::getEndFrame() {
+	long end = 0;
+	for (int j=0;j<clip_count();j++) {
+		Clip& c = get_clip(j);
+		if (c.timeline_out > end) {
+			end = c.timeline_out;
+		}
+	}
+	return end;
+}
+
+void Sequence::get_track_limits(int* video_tracks, int* audio_tracks) {
+	int vt = 0;
+	int at = 0;
+	for (int j=0;j<clip_count();j++) {
+		Clip& c = get_clip(j);
+		if (c.track < 0 && c.track < vt) { // video clip
+			vt = c.track;
+		} else if (c.track > at) {
+			at = c.track;
+		}
+	}
+	if (video_tracks != NULL) *video_tracks = vt;
+	if (audio_tracks != NULL) *audio_tracks = at;
+}
+
+void Sequence::delete_area(long in, long out, int track) {
+	for (int i=0;i<clip_count();i++) {
+		Clip& c = get_clip(i);
+		if (c.track == track && !c.undeletable) {
+			if (c.timeline_in >= in && c.timeline_out <= out) {
+				// clips falls entirely within deletion area
+				delete_clip(i);
+				i--;
+			} else if (c.timeline_in < in && c.timeline_out > out) {
+				// middle of clip is within deletion area
+				clips.append(clips.at(i)); // copy clip
+
+				Clip& pre = get_clip(i);
+				Clip& post = get_clip(clips.size()-1);
+
+				pre.timeline_out = in;
+				post.timeline_in = out;
+				post.clip_in = pre.clip_in + pre.getLength() + (out - in);
+			} else if (c.timeline_in < in && c.timeline_out > in) {
+				// only out point is in deletion area
+				c.timeline_out = in;
+			} else if (c.timeline_in < out && c.timeline_out > out) {
+				// only in point is in deletion area
+				c.clip_in += out - c.timeline_in;
+				c.timeline_in = out;
+			}
+		}
+	}
+}
+
+void Sequence::split_clip(int i, long frame) {
+	Clip& pre = get_clip(i);
+	if (pre.timeline_in < frame && pre.timeline_out > frame) { // guard against attempts to split at in/out points
+		clips.append(pre); // copy clip
+
+		Clip& post = get_clip(clips.size()-1);
+
+		pre.timeline_out = frame;
+		post.timeline_in = frame;
+		post.clip_in = pre.clip_in + pre.getLength();
+	}
+}
+
+void Sequence::split_at_playhead(long frame) {
+	for (int j=0;j<clip_count();j++) {
+		Clip& c = get_clip(j);
+		if (c.timeline_in < frame && c.timeline_out > frame) {
+			split_clip(j, frame);
+		}
+	}
+}