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 GainRole,
87 GainEnabledRole,
88 };
89
90 explicit MultitrackModel(QObject *parent = 0);
91 ~MultitrackModel();
92
93 Mlt::Tractor *tractor() const { return m_tractor; }
94 const TrackList &trackList() const { return m_trackList; }
95
96 int rowCount(const QModelIndex &parent = QModelIndex()) const;
97 int columnCount(const QModelIndex &parent) const;
98 QVariant data(const QModelIndex &index, int role) const;
99 QModelIndex index(int row, int column = 0, const QModelIndex &parent = QModelIndex()) const;
100 QModelIndex makeIndex(int trackIndex, int clipIndex) const;
101 QModelIndex parent(const QModelIndex &index) const;
102 QHash<int, QByteArray> roleNames() const;
103 Q_INVOKABLE void audioLevelsReady(const QPersistentModelIndex &index);
104 bool createIfNeeded();
105 void addBackgroundTrack();
106 int addAudioTrack();
107 int addVideoTrack();
108 void removeTrack(int trackIndex);
109 void load();
110 void close();
111 int clipIndex(int trackIndex, int position);
112 bool trimClipInValid(int trackIndex, int clipIndex, int delta, bool ripple);
113 bool trimClipOutValid(int trackIndex, int clipIndex, int delta, bool ripple);
114 int trackHeight() const;
115 void setTrackHeight(int height);
116 int trackHeaderWidth() const;
117 void setTrackHeaderWidth(int width);
118 double scaleFactor() const;
119 void setScaleFactor(double scale);
120 bool isTransition(Mlt::Playlist &playlist, int clipIndex) const;
121 void insertTrack(int trackIndex, TrackType type = VideoTrackType);
122 void moveTrack(int fromTrackIndex, int toTrackIndex);
123 void insertOrAdjustBlankAt(QList<int> tracks, int position, int length);
124 bool mergeClipWithNext(int trackIndex, int clipIndex, bool dryrun);
125 std::unique_ptr<Mlt::ClipInfo> findClipByUuid(const QUuid &uuid,
126 int &trackIndex,
127 int &clipIndex);
128 std::unique_ptr<Mlt::ClipInfo> getClipInfo(int trackIndex, int clipIndex);
129 QString getTrackName(int trackIndex);
130 int bottomVideoTrackIndex() const;
131 int mltIndexForTrack(int trackIndex) const;
132 bool checkForEmptyTracks(int trackIndex);
133 QString trackTransitionService();
134
135signals:
136 void created();
137 void aboutToClose();
138 void closed();
139 void modified();
140 void seeked(int position, bool seekPlayer = true);
141 void trackHeightChanged();
142 void trackHeaderWidthChanged();
143 void scaleFactorChanged();
144 void showStatusMessage(QString);
145 void durationChanged();
146 void filteredChanged();
147 void reloadRequested();
148 void appended(int trackIndex, int clipIndex);
149 void inserted(int trackIndex, int clipIndex);
150 void overWritten(int trackIndex, int clipIndex);
151 void removing(Mlt::Service *service);
152 void noMoreEmptyTracks(bool isAudio);
153
154public slots:
155 void refreshTrackList();
156 void setTrackName(int row, const QString &value);
157 void setTrackMute(int row, bool mute);
158 void setTrackHidden(int row, bool hidden);
159 void setTrackComposite(int row, bool composite);
160 void setTrackLock(int row, bool lock);
161 int trimClipIn(int trackIndex, int clipIndex, int delta, bool ripple, bool rippleAllTracks);
162 void notifyClipIn(int trackIndex, int clipIndex);
163 int trimClipOut(int trackIndex, int clipIndex, int delta, bool ripple, bool rippleAllTracks);
164 void notifyClipOut(int trackIndex, int clipIndex);
165 bool moveClip(
166 int fromTrack, int toTrack, int clipIndex, int position, bool ripple, bool rippleAllTracks);
167 int overwriteClip(int trackIndex, Mlt::Producer &clip, int position, bool seek = true);
168 QString overwrite(
169 int trackIndex, Mlt::Producer &clip, int position, bool seek = true, bool notify = true);
170 int insertClip(int trackIndex,
171 Mlt::Producer &clip,
172 int position,
173 bool rippleAllTracks,
174 bool seek = true,
175 bool notify = true);
176 int appendClip(int trackIndex, Mlt::Producer &clip, bool seek = true, bool notify = true);
177 void removeClip(int trackIndex, int clipIndex, bool rippleAllTracks);
178 void liftClip(int trackIndex, int clipIndex);
179 void splitClip(int trackIndex, int clipIndex, int position);
180 void joinClips(int trackIndex, int clipIndex);
181 void changeGain(int trackIndex, int clipIndex, double gain);
182 void fadeIn(int trackIndex, int clipIndex, int duration);
183 void fadeOut(int trackIndex, int clipIndex, int duration);
184 bool addTransitionValid(int fromTrack, int toTrack, int clipIndex, int position, bool ripple);
185 int addTransition(int trackIndex, int clipIndex, int position, bool ripple, bool rippleAllTracks);
186 void removeTransition(int trackIndex, int clipIndex);
187 void removeTransitionByTrimIn(int trackIndex, int clipIndex, int delta);
188 void removeTransitionByTrimOut(int trackIndex, int clipIndex, int delta);
189 bool trimTransitionInValid(int trackIndex, int clipIndex, int delta);
190 void trimTransitionIn(int trackIndex, int clipIndex, int delta, bool slip = false);
191 bool trimTransitionOutValid(int trackIndex, int clipIndex, int delta);
192 void trimTransitionOut(int trackIndex, int clipIndex, int delta, bool slip = false);
193 bool addTransitionByTrimInValid(int trackIndex, int clipIndex, int delta);
194 int addTransitionByTrimIn(int trackIndex, int clipIndex, int delta);
195 bool addTransitionByTrimOutValid(int trackIndex, int clipIndex, int delta);
196 void addTransitionByTrimOut(int trackIndex, int clipIndex, int delta);
197 bool removeTransitionByTrimInValid(int trackIndex, int clipIndex, int delta);
198 bool removeTransitionByTrimOutValid(int trackIndex, int clipIndex, int delta);
199 void filterAddedOrRemoved(Mlt::Producer *producer);
200 void onFilterChanged(Mlt::Service *service);
201 void reload(bool asynchronous = false);
202 void replace(int trackIndex, int clipIndex, Mlt::Producer &clip, bool copyFilters = true);
203
204private:
205 Mlt::Tractor *m_tractor;
206 TrackList m_trackList;
207 bool m_isMakingTransition;
208
209 void moveClipToEnd(Mlt::Playlist &playlist,
210 int trackIndex,
211 int clipIndex,
212 int position,
213 bool ripple,
214 bool rippleAllTracks);
215 void moveClipInBlank(Mlt::Playlist &playlist,
216 int trackIndex,
217 int clipIndex,
218 int position,
219 bool ripple,
220 bool rippleAllTracks,
221 int duration = 0);
222 void consolidateBlanks(Mlt::Playlist &playlist, int trackIndex);
223 void consolidateBlanksAllTracks();
224 void getAudioLevels();
225 void addBlackTrackIfNeeded();
226 void convertOldDoc();
227 Mlt::Transition *getTransition(const QString &name, int trackIndex) const;
228 Mlt::Filter *getFilter(const QString &name, int trackIndex) const;
229 Mlt::Filter *getFilter(const QString &name, Mlt::Service *service) const;
230 void removeBlankPlaceholder(Mlt::Playlist &playlist, int trackIndex);
231 void retainPlaylist();
232 void loadPlaylist();
233 void removeRegion(int trackIndex, int position, int length);
234 void clearMixReferences(int trackIndex, int clipIndex);
235 bool isFiltered(Mlt::Producer *producer = 0) const;
236 int getDuration();
237 void adjustServiceFilterDurations(Mlt::Service &service, int duration);
238 bool warnIfInvalid(Mlt::Service &service);
239 Mlt::Transition *getVideoBlendTransition(int trackIndex) const;
240 void refreshVideoBlendTransitions();
241 int bottomVideoTrackMltIndex() const;
242 bool hasEmptyTrack(TrackType trackType) const;
243
244 friend class UndoHelper;
245
246private slots:
247 void adjustBackgroundDuration();
248 void adjustTrackFilters();
249};
250
251#endif // MULTITRACKMODEL_H
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