CuteLogger
Fast and simple logging solution for Qt based applications
multitrackmodel.h
1/*
2 * Copyright (c) 2013-2025 Meltytech, LLC
3 *
4 * This program is free software: you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation, either version 3 of the License, or
7 * (at your option) any later version.
8 *
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
13 *
14 * You should have received a copy of the GNU General Public License
15 * along with this program. If not, see <http://www.gnu.org/licenses/>.
16 */
17
18#ifndef MULTITRACKMODEL_H
19#define MULTITRACKMODEL_H
20
21#include <MltPlaylist.h>
22#include <MltTractor.h>
23#include <QAbstractItemModel>
24#include <QList>
25#include <QString>
26
27#include <memory>
28
29typedef enum {
30 PlaylistTrackType = 0,
31 BlackTrackType,
32 SilentTrackType,
33 AudioTrackType,
34 VideoTrackType
35} TrackType;
36
37typedef struct
38{
39 TrackType type;
40 int number;
41 int mlt_index;
42} Track;
43
44typedef QList<Track> TrackList;
45
46class MultitrackModel : public QAbstractItemModel
47{
48 Q_OBJECT
49 Q_PROPERTY(int trackHeight READ trackHeight WRITE setTrackHeight NOTIFY trackHeightChanged)
50 Q_PROPERTY(int trackHeaderWidth READ trackHeaderWidth WRITE setTrackHeaderWidth NOTIFY
51 trackHeaderWidthChanged FINAL)
52 Q_PROPERTY(double scaleFactor READ scaleFactor WRITE setScaleFactor NOTIFY scaleFactorChanged)
53 Q_PROPERTY(bool filtered READ isFiltered NOTIFY filteredChanged)
54
55public:
57 enum {
58 NameRole = Qt::UserRole + 1,
59 CommentRole,
60 ResourceRole,
61 ServiceRole,
62 IsBlankRole,
63 StartRole,
64 DurationRole,
65 InPointRole,
66 OutPointRole,
67 FramerateRole,
68 IsMuteRole,
69 IsHiddenRole,
70 IsAudioRole,
71 AudioLevelsRole,
72 IsCompositeRole,
73 IsLockedRole,
74 FadeInRole,
75 FadeOutRole,
76 IsTransitionRole,
77 FileHashRole,
78 SpeedRole,
79 IsFilteredRole,
80 IsTopVideoRole,
81 IsBottomVideoRole,
82 IsTopAudioRole,
83 IsBottomAudioRole,
84 AudioIndexRole,
85 GroupRole,
86 };
87
88 explicit MultitrackModel(QObject *parent = 0);
89 ~MultitrackModel();
90
91 Mlt::Tractor *tractor() const { return m_tractor; }
92 const TrackList &trackList() const { return m_trackList; }
93
94 int rowCount(const QModelIndex &parent = QModelIndex()) const;
95 int columnCount(const QModelIndex &parent) const;
96 QVariant data(const QModelIndex &index, int role) const;
97 QModelIndex index(int row, int column = 0, const QModelIndex &parent = QModelIndex()) const;
98 QModelIndex makeIndex(int trackIndex, int clipIndex) const;
99 QModelIndex parent(const QModelIndex &index) const;
100 QHash<int, QByteArray> roleNames() const;
101 Q_INVOKABLE void audioLevelsReady(const QPersistentModelIndex &index);
102 bool createIfNeeded();
103 void addBackgroundTrack();
104 int addAudioTrack();
105 int addVideoTrack();
106 void removeTrack(int trackIndex);
107 void load();
108 void close();
109 int clipIndex(int trackIndex, int position);
110 bool trimClipInValid(int trackIndex, int clipIndex, int delta, bool ripple);
111 bool trimClipOutValid(int trackIndex, int clipIndex, int delta, bool ripple);
112 int trackHeight() const;
113 void setTrackHeight(int height);
114 int trackHeaderWidth() const;
115 void setTrackHeaderWidth(int width);
116 double scaleFactor() const;
117 void setScaleFactor(double scale);
118 bool isTransition(Mlt::Playlist &playlist, int clipIndex) const;
119 void insertTrack(int trackIndex, TrackType type = VideoTrackType);
120 void moveTrack(int fromTrackIndex, int toTrackIndex);
121 void insertOrAdjustBlankAt(QList<int> tracks, int position, int length);
122 bool mergeClipWithNext(int trackIndex, int clipIndex, bool dryrun);
123 std::unique_ptr<Mlt::ClipInfo> findClipByUuid(const QUuid &uuid,
124 int &trackIndex,
125 int &clipIndex);
126 std::unique_ptr<Mlt::ClipInfo> getClipInfo(int trackIndex, int clipIndex);
127 QString getTrackName(int trackIndex);
128 int bottomVideoTrackIndex() const;
129 int mltIndexForTrack(int trackIndex) const;
130 bool checkForEmptyTracks(int trackIndex);
131
132signals:
133 void created();
134 void aboutToClose();
135 void closed();
136 void modified();
137 void seeked(int position, bool seekPlayer = true);
138 void trackHeightChanged();
139 void trackHeaderWidthChanged();
140 void scaleFactorChanged();
141 void showStatusMessage(QString);
142 void durationChanged();
143 void filteredChanged();
144 void reloadRequested();
145 void appended(int trackIndex, int clipIndex);
146 void inserted(int trackIndex, int clipIndex);
147 void overWritten(int trackIndex, int clipIndex);
148 void removing(Mlt::Service *service);
149 void noMoreEmptyTracks(bool isAudio);
150
151public slots:
152 void refreshTrackList();
153 void setTrackName(int row, const QString &value);
154 void setTrackMute(int row, bool mute);
155 void setTrackHidden(int row, bool hidden);
156 void setTrackComposite(int row, bool composite);
157 void setTrackLock(int row, bool lock);
158 int trimClipIn(int trackIndex, int clipIndex, int delta, bool ripple, bool rippleAllTracks);
159 void notifyClipIn(int trackIndex, int clipIndex);
160 int trimClipOut(int trackIndex, int clipIndex, int delta, bool ripple, bool rippleAllTracks);
161 void notifyClipOut(int trackIndex, int clipIndex);
162 bool moveClip(
163 int fromTrack, int toTrack, int clipIndex, int position, bool ripple, bool rippleAllTracks);
164 int overwriteClip(int trackIndex, Mlt::Producer &clip, int position, bool seek = true);
165 QString overwrite(
166 int trackIndex, Mlt::Producer &clip, int position, bool seek = true, bool notify = true);
167 int insertClip(int trackIndex,
168 Mlt::Producer &clip,
169 int position,
170 bool rippleAllTracks,
171 bool seek = true,
172 bool notify = true);
173 int appendClip(int trackIndex, Mlt::Producer &clip, bool seek = true, bool notify = true);
174 void removeClip(int trackIndex, int clipIndex, bool rippleAllTracks);
175 void liftClip(int trackIndex, int clipIndex);
176 void splitClip(int trackIndex, int clipIndex, int position);
177 void joinClips(int trackIndex, int clipIndex);
178 void fadeIn(int trackIndex, int clipIndex, int duration);
179 void fadeOut(int trackIndex, int clipIndex, int duration);
180 bool addTransitionValid(int fromTrack, int toTrack, int clipIndex, int position, bool ripple);
181 int addTransition(int trackIndex, int clipIndex, int position, bool ripple, bool rippleAllTracks);
182 void removeTransition(int trackIndex, int clipIndex);
183 void removeTransitionByTrimIn(int trackIndex, int clipIndex, int delta);
184 void removeTransitionByTrimOut(int trackIndex, int clipIndex, int delta);
185 bool trimTransitionInValid(int trackIndex, int clipIndex, int delta);
186 void trimTransitionIn(int trackIndex, int clipIndex, int delta, bool slip = false);
187 bool trimTransitionOutValid(int trackIndex, int clipIndex, int delta);
188 void trimTransitionOut(int trackIndex, int clipIndex, int delta, bool slip = false);
189 bool addTransitionByTrimInValid(int trackIndex, int clipIndex, int delta);
190 int addTransitionByTrimIn(int trackIndex, int clipIndex, int delta);
191 bool addTransitionByTrimOutValid(int trackIndex, int clipIndex, int delta);
192 void addTransitionByTrimOut(int trackIndex, int clipIndex, int delta);
193 bool removeTransitionByTrimInValid(int trackIndex, int clipIndex, int delta);
194 bool removeTransitionByTrimOutValid(int trackIndex, int clipIndex, int delta);
195 void filterAddedOrRemoved(Mlt::Producer *producer);
196 void onFilterChanged(Mlt::Service *service);
197 void reload(bool asynchronous = false);
198 void replace(int trackIndex, int clipIndex, Mlt::Producer &clip, bool copyFilters = true);
199
200private:
201 Mlt::Tractor *m_tractor;
202 TrackList m_trackList;
203 bool m_isMakingTransition;
204
205 void moveClipToEnd(Mlt::Playlist &playlist,
206 int trackIndex,
207 int clipIndex,
208 int position,
209 bool ripple,
210 bool rippleAllTracks);
211 void moveClipInBlank(Mlt::Playlist &playlist,
212 int trackIndex,
213 int clipIndex,
214 int position,
215 bool ripple,
216 bool rippleAllTracks,
217 int duration = 0);
218 void consolidateBlanks(Mlt::Playlist &playlist, int trackIndex);
219 void consolidateBlanksAllTracks();
220 void getAudioLevels();
221 void addBlackTrackIfNeeded();
222 void convertOldDoc();
223 Mlt::Transition *getTransition(const QString &name, int trackIndex) const;
224 Mlt::Filter *getFilter(const QString &name, int trackIndex) const;
225 Mlt::Filter *getFilter(const QString &name, Mlt::Service *service) const;
226 void removeBlankPlaceholder(Mlt::Playlist &playlist, int trackIndex);
227 void retainPlaylist();
228 void loadPlaylist();
229 void removeRegion(int trackIndex, int position, int length);
230 void clearMixReferences(int trackIndex, int clipIndex);
231 bool isFiltered(Mlt::Producer *producer = 0) const;
232 int getDuration();
233 void adjustServiceFilterDurations(Mlt::Service &service, int duration);
234 bool warnIfInvalid(Mlt::Service &service);
235 Mlt::Transition *getVideoBlendTransition(int trackIndex) const;
236 void refreshVideoBlendTransitions();
237 int bottomVideoTrackMltIndex() const;
238 bool hasEmptyTrack(TrackType trackType) const;
239
240 friend class UndoHelper;
241
242private slots:
243 void adjustBackgroundDuration();
244 void adjustTrackFilters();
245};
246
247#endif // MULTITRACKMODEL_H