improved replace media and made it undoable

io/media.cpp

@@ -6,6 +6,8 @@ extern "C" {
 	#include <libavformat/avformat.h>
 }
 
+#include "project/clip.h"
+
 Media::Media() : ready(false) {}
 
 Media::~Media() {

io/media.h

@@ -9,6 +9,7 @@
 #include <QPixmap>
 
 struct Sequence;
+struct Clip;
 
 struct MediaStream {
 	int file_index;
@@ -39,7 +40,7 @@ struct Media {
     bool ready;
 
     long get_length_in_frames(double frame_rate);
-    MediaStream* get_stream_from_file_index(int index);
+	MediaStream* get_stream_from_file_index(int index);
     void reset();
 };
 

io/previewgenerator.cpp

@@ -18,7 +18,15 @@ extern "C" {
 #include <libswresample/swresample.h>
 }
 
-PreviewGenerator::PreviewGenerator(QTreeWidgetItem* i, Media* m) : QThread(0), fmt_ctx(NULL), item(i), media(m), retrieve_duration(false), contains_still_image(false) {
+PreviewGenerator::PreviewGenerator(QTreeWidgetItem* i, Media* m, bool r) :
+	QThread(0),
+	fmt_ctx(NULL),
+	item(i),
+	media(m),
+	retrieve_duration(false),
+	contains_still_image(false),
+	replace(r)
+{
     connect(this, SIGNAL(finished()), this, SLOT(deleteLater()));
 }
 
@@ -72,9 +80,9 @@ void PreviewGenerator::finalize_media() {
 	media->ready = true;
 
 	if (media->video_tracks.size() == 0) {
-		emit set_icon(ICON_TYPE_AUDIO);
+		emit set_icon(ICON_TYPE_AUDIO, replace);
 	} else {
-		emit set_icon(ICON_TYPE_VIDEO);
+		emit set_icon(ICON_TYPE_VIDEO, replace);
 	}
 
 	if (!contains_still_image || media->audio_tracks.size() > 0) {
@@ -290,7 +298,7 @@ void PreviewGenerator::run() {
         avformat_close_input(&fmt_ctx);
     }
     if (error) {
-        emit set_icon(ICON_TYPE_ERROR);
+		emit set_icon(ICON_TYPE_ERROR, replace);
     } else {
         item->setToolTip(0, QString());
     }

io/previewgenerator.h

@@ -16,10 +16,10 @@ class PreviewGenerator : public QThread
 {
     Q_OBJECT
 public:
-    PreviewGenerator(QTreeWidgetItem*, Media*);
+	PreviewGenerator(QTreeWidgetItem*, Media*, bool);
     void run();
 signals:
-    void set_icon(int);
+	void set_icon(int, bool);
 private:
     void parse_media();
     void generate_waveform();
@@ -29,6 +29,7 @@ private:
     AVFormatContext* fmt_ctx;
 	bool retrieve_duration;
 	bool contains_still_image;
+	bool replace;
 };
 
 #endif // PREVIEWGENERATOR_H