1 /***************************************************************************
2 krender.h - description
4 begin : Fri Nov 22 2002
5 copyright : (C) 2002 by Jason Wood (jasonwood@blueyonder.co.uk)
6 copyright : (C) 2010 by Jean-Baptiste Mardelle (jb@kdenlive.org)
8 ***************************************************************************/
10 /***************************************************************************
12 * This program is free software; you can redistribute it and/or modify *
13 * it under the terms of the GNU General Public License as published by *
14 * the Free Software Foundation; either version 2 of the License, or *
15 * (at your option) any later version. *
17 ***************************************************************************/
21 * @brief Client side of the interface to a renderer.
23 * From Kdenlive's point of view, you treat the Render object as the renderer,
24 * and simply use it as if it was local. Calls are asynchronous - you send a
25 * call out, and then receive the return value through the relevant signal that
26 * get's emitted once the call completes.
33 #include "definitions.h"
34 #include "abstractmonitor.h"
36 #include <mlt/framework/mlt_types.h>
70 struct requestClipInfo {
76 bool operator==(const requestClipInfo &a)
78 return clipId == a.clipId;
82 class MltErrorEvent : public QEvent
85 MltErrorEvent(const QString &message) : QEvent(QEvent::User), m_message(message) {}
86 QString message() const {
95 class Render: public AbstractRender
99 enum FailStates { OK = 0,
102 /** @brief Build a MLT Renderer
103 * @param rendererName A unique identifier for this renderer
104 * @param winid The parent widget identifier (required for SDL display). Set to 0 for OpenGL rendering
105 * @param profile The MLT profile used for the renderer (default one will be used if empty). */
106 Render(Kdenlive::MONITORID rendererName, int winid, QString profile = QString(), QWidget *parent = 0);
108 /** @brief Destroy the MLT Renderer. */
111 /** @brief Seeks the renderer clip to the given time. */
112 void seek(GenTime time);
114 void seekToFrameDiff(int diff);
116 QPixmap getImageThumbnail(KUrl url, int width, int height);
118 /** @brief Sets the current MLT producer playlist.
119 * @param list The xml describing the playlist
120 * @param position (optional) time to seek to */
121 int setSceneList(QDomDocument list, int position = 0);
123 /** @brief Sets the current MLT producer playlist.
124 * @param list new playlist
125 * @param position (optional) time to seek to
126 * @return 0 when it has success, different from 0 otherwise
128 * Creates the producer from the text playlist. */
129 int setSceneList(QString playlist, int position = 0);
130 int setProducer(Mlt::Producer *producer, int position);
132 /** @brief Get the current MLT producer playlist.
133 * @return A string describing the playlist */
134 const QString sceneList();
135 bool saveSceneList(QString path, QDomElement kdenliveData = QDomElement());
137 /** @brief Tells the renderer to play the scene at the specified speed,
138 * @param speed speed to play the scene to
140 * The speed is relative to normal playback, e.g. 1.0 is normal speed, 0.0
141 * is paused, -1.0 means play backwards. It does not specify start/stop */
142 void play(double speed);
143 void switchPlay(bool play);
146 /** @brief Stops playing.
147 * @param startTime time to seek to */
148 void stop(const GenTime &startTime);
151 QImage extractFrame(int frame_position, QString path = QString(), int width = -1, int height = -1);
153 /** @brief Plays the scene starting from a specific time.
154 * @param startTime time to start playing the scene from */
155 void play(const GenTime & startTime);
156 void playZone(const GenTime & startTime, const GenTime & stopTime);
157 void loopZone(const GenTime & startTime, const GenTime & stopTime);
159 void saveZone(KUrl url, QString desc, QPoint zone);
161 /** @brief Save a clip in timeline to an xml playlist. */
162 bool saveClip(int track, GenTime position, KUrl url, QString desc = QString());
164 /** @brief Return true if we are currently playing */
165 bool isPlaying() const;
167 /** @brief Returns the speed at which the renderer is currently playing.
169 * It returns 0.0 when the renderer is not playing anything. */
170 double playSpeed() const;
172 /** @brief Returns the current seek position of the renderer. */
173 GenTime seekPosition() const;
174 int seekFramePosition() const;
176 void emitFrameUpdated(Mlt::Frame&);
177 void emitFrameNumber();
178 void emitConsumerStopped(bool forcePause = false);
180 /** @brief Returns the aspect ratio of the consumer. */
181 double consumerRatio() const;
183 /** @brief Saves current producer frame as an image. */
184 void exportCurrentFrame(KUrl url, bool notify);
186 /** @brief Change the Mlt PROFILE
187 * @param profileName The MLT profile name
188 * @param dropSceneList If true, the current playlist will be deleted
189 * @return true if the profile was changed
191 int resetProfile(const QString& profileName, bool dropSceneList = false);
192 /** @brief Returns true if the render uses profileName as current profile. */
193 bool hasProfile(const QString& profileName) const;
196 /** @brief Returns the width of a frame for this profile. */
197 int frameRenderWidth() const;
198 /** @brief Returns the display width of a frame for this profile. */
199 int renderWidth() const;
200 /** @brief Returns the height of a frame for this profile. */
201 int renderHeight() const;
203 /** @brief Returns display aspect ratio. */
205 /** @brief Returns sample aspect ratio. */
207 /** @brief If monitor is active, refresh it. */
208 void refreshIfActive();
209 /** @brief Start the MLT monitor consumer. */
210 void startConsumer();
213 * Playlist manipulation.
215 Mlt::Producer *checkSlowMotionProducer(Mlt::Producer *prod, QDomElement element);
216 int mltInsertClip(ItemInfo info, QDomElement element, Mlt::Producer *prod, bool overwrite = false, bool push = false);
217 bool mltUpdateClip(Mlt::Tractor *tractor, ItemInfo info, QDomElement element, Mlt::Producer *prod);
218 bool mltCutClip(int track, GenTime position);
219 void mltInsertSpace(QMap <int, int> trackClipStartList, QMap <int, int> trackTransitionStartList, int track, const GenTime &duration, const GenTime &timeOffset);
220 int mltGetSpaceLength(const GenTime &pos, int track, bool fromBlankStart);
222 /** @brief Returns the duration/length of @param track as reported by the track producer. */
223 int mltTrackDuration(int track);
225 bool mltResizeClipEnd(ItemInfo info, GenTime clipDuration, bool refresh = true);
226 bool mltResizeClipStart(ItemInfo info, GenTime diff);
227 bool mltResizeClipCrop(ItemInfo info, GenTime newCropStart);
228 bool mltMoveClip(int startTrack, int endTrack, GenTime pos, GenTime moveStart, Mlt::Producer *prod, bool overwrite = false, bool insert = false);
229 bool mltMoveClip(int startTrack, int endTrack, int pos, int moveStart, Mlt::Producer *prod, bool overwrite = false, bool insert = false);
230 bool mltRemoveClip(int track, GenTime position);
232 /** @brief Deletes an effect from a clip in MLT's playlist. */
233 bool mltRemoveEffect(int track, GenTime position, int index, bool updateIndex, bool doRefresh = true);
234 bool mltRemoveTrackEffect(int track, int index, bool updateIndex);
236 /** @brief Adds an effect to a clip in MLT's playlist. */
237 bool mltAddEffect(int track, GenTime position, EffectsParameterList params, bool doRefresh = true);
238 bool addFilterToService(Mlt::Service service, EffectsParameterList params, int duration);
239 bool mltAddEffect(Mlt::Service service, EffectsParameterList params, int duration, bool doRefresh);
240 bool mltAddTrackEffect(int track, EffectsParameterList params);
242 /** @brief Enable / disable clip effects.
243 * @param track The track where the clip is
244 * @param position The start position of the clip
245 * @param effectIndexes The list of effect indexes to enable / disable
246 * @param disable True if effects should be disabled, false otherwise */
247 bool mltEnableEffects(int track, GenTime position, QList <int> effectIndexes, bool disable);
248 /** @brief Enable / disable track effects.
249 * @param track The track where the effect is
250 * @param effectIndexes The list of effect indexes to enable / disable
251 * @param disable True if effects should be disabled, false otherwise */
252 bool mltEnableTrackEffects(int track, QList <int> effectIndexes, bool disable);
254 /** @brief Edits an effect parameters in MLT's playlist. */
255 bool mltEditEffect(int track, GenTime position, EffectsParameterList params);
256 bool mltEditTrackEffect(int track, EffectsParameterList params);
258 /** @brief Updates the "kdenlive_ix" (index) value of an effect. */
259 void mltUpdateEffectPosition(int track, GenTime position, int oldPos, int newPos);
261 /** @brief Changes the order of effects in MLT's playlist.
263 * It switches effects from oldPos and newPos, updating the "kdenlive_ix"
265 void mltMoveEffect(int track, GenTime position, int oldPos, int newPos);
266 void mltMoveTrackEffect(int track, int oldPos, int newPos);
268 /** @brief Enables/disables audio/video in a track. */
269 void mltChangeTrackState(int track, bool mute, bool blind);
270 bool mltMoveTransition(QString type, int startTrack, int newTrack, int newTransitionTrack, GenTime oldIn, GenTime oldOut, GenTime newIn, GenTime newOut);
271 bool mltAddTransition(QString tag, int a_track, int b_track, GenTime in, GenTime out, QDomElement xml, bool refresh = true);
272 void mltDeleteTransition(QString tag, int a_track, int b_track, GenTime in, GenTime out, QDomElement xml, bool refresh = true);
273 void mltUpdateTransition(QString oldTag, QString tag, int a_track, int b_track, GenTime in, GenTime out, QDomElement xml, bool force = false);
274 void mltUpdateTransitionParams(QString type, int a_track, int b_track, GenTime in, GenTime out, QDomElement xml);
275 void mltAddClipTransparency(ItemInfo info, int transitiontrack, int id);
276 void mltMoveTransparency(int startTime, int endTime, int startTrack, int endTrack, int id);
277 void mltDeleteTransparency(int pos, int track, int id);
278 void mltResizeTransparency(int oldStart, int newStart, int newEnd, int track, int id);
279 QList <TransitionInfo> mltInsertTrack(int ix, bool videoTrack);
280 void mltDeleteTrack(int ix);
281 bool mltUpdateClipProducer(Mlt::Tractor *tractor, int track, int pos, Mlt::Producer *prod);
282 void mltPlantTransition(Mlt::Field *field, Mlt::Transition &tr, int a_track, int b_track);
283 Mlt::Producer *invalidProducer(const QString &id);
285 /** @brief Changes the speed of a clip in MLT's playlist.
287 * It creates a new "framebuffer" producer, which must have its "resource"
288 * property set to "video.mpg?0.6", where "video.mpg" is the path to the
289 * clip and "0.6" is the speed in percentage. The newly created producer
290 * will have its "id" property set to "slowmotion:parentid:speed", where
291 * "parentid" is the id of the original clip in the ClipManager list and
292 * "speed" is the current speed. */
293 int mltChangeClipSpeed(ItemInfo info, ItemInfo speedIndependantInfo, double speed, double oldspeed, int strobe, Mlt::Producer *prod);
295 const QList <Mlt::Producer *> producersList();
296 void updatePreviewSettings();
297 void setDropFrames(bool show);
298 /** @brief Sets an MLT consumer property. */
299 void setConsumerProperty(const QString &name, const QString &value);
300 QString updateSceneListFps(double current_fps, double new_fps, QString scene);
302 void showAudio(Mlt::Frame&);
304 QList <int> checkTrackSequence(int);
305 void sendFrameUpdate();
307 /** @brief Returns a pointer to the main producer. */
308 Mlt::Producer *getProducer();
309 /** @brief Returns the number of clips to process (When requesting clip info). */
310 int processingItems();
311 /** @brief Processing of this clip is over, producer was set on clip, remove from list. */
312 void processingDone(const QString &id);
313 /** @brief Force processing of clip with selected id. */
314 void forceProcessing(const QString &id);
315 /** @brief Are we currently processing clip with selected id. */
316 bool isProcessing(const QString &id);
318 /** @brief Requests the file properties for the specified URL (will be put in a queue list)
319 @param xml The xml parameters for the clip
320 @param clipId The clip Id string
321 @param imageHeight The height (in pixels) of the returned thumbnail (height of a treewidgetitem in projectlist)
322 @param replaceProducer If true, the MLT producer will be recreated */
323 void getFileProperties(const QDomElement &xml, const QString &clipId, int imageHeight, bool replaceProducer = true);
325 /** @brief Lock the MLT service */
326 Mlt::Tractor *lockService();
327 /** @brief Unlock the MLT service */
328 void unlockService(Mlt::Tractor *tractor);
329 const QString activeClipId();
330 /** @brief Fill a combobox with the found blackmagic devices */
331 static bool getBlackMagicDeviceList(KComboBox *devicelist, bool force = false);
332 static bool getBlackMagicOutputDeviceList(KComboBox *devicelist, bool force = false);
333 /** @brief Frame rendering is handeled by Kdenlive, don't show video through SDL display */
334 void disablePreview(bool disable);
335 /** @brief Get current seek pos requested of SEEK_INACTIVE if we are not currently seeking */
336 int requestedSeekPosition;
337 /** @brief Get current seek pos requested of current producer pos if not seeking */
338 int getCurrentSeekPosition() const;
339 /** @brief Create a producer from url and load it in the monitor */
340 void loadUrl(const QString &url);
341 /** @brief Check if the installed FFmpeg / Libav supports x11grab */
342 static bool checkX11Grab();
344 /** @brief Ask to set this monitor as active */
345 void setActiveMonitor();
347 QSemaphore showFrameSemaphore;
348 bool externalConsumer;
351 static void consumer_frame_show(mlt_consumer, Render * self, mlt_frame frame_ptr);
352 static void consumer_gl_frame_show(mlt_consumer, Render * self, mlt_frame frame_ptr);
356 /** @brief The name of this renderer.
358 * Useful to identify the renderers by what they do - e.g. background
359 * rendering, workspace monitor, etc. */
360 Kdenlive::MONITORID m_name;
361 Mlt::Consumer * m_mltConsumer;
362 Mlt::Producer * m_mltProducer;
363 Mlt::Profile *m_mltProfile;
364 Mlt::Event *m_showFrameEvent;
365 Mlt::Event *m_pauseEvent;
368 /** @brief True if we are playing a zone.
370 * It's determined by the "in" and "out" properties being temporarily
376 /** @brief True when the monitor is in split view. */
379 Mlt::Producer *m_blackClip;
380 QString m_activeProfile;
383 QTimer m_refreshTimer;
387 /** @brief A human-readable description of this renderer. */
391 QFuture <void> m_infoThread;
392 QList <requestClipInfo> m_requestList;
394 /** @brief True if this monitor is active. */
398 void mltCheckLength(Mlt::Tractor *tractor);
399 void mltPasteEffects(Mlt::Producer *source, Mlt::Producer *dest);
400 QMap<QString, QString> mltGetTransitionParamsFromXml(QDomElement xml);
401 QMap<QString, Mlt::Producer *> m_slowmotionProducers;
402 /** @brief The ids of the clips that are currently being loaded for info query */
403 QStringList m_processingClipId;
405 /** @brief Build the MLT Consumer object with initial settings.
406 * @param profileName The MLT profile to use for the consumer */
407 void buildConsumer(const QString& profileName);
408 void resetZoneMode();
409 void fillSlowMotionProducers();
410 /** @brief Get the track number of the lowest audible (non muted) audio track
411 * @param return The track number */
412 int getLowestNonMutedAudioTrack(Mlt::Tractor tractor);
414 /** @brief Make sure our audio mixing transitions are applied to the lowest track */
415 void fixAudioMixing(Mlt::Tractor tractor);
416 /** @brief Make sure we inform MLT if we need a lot of threads for avformat producer */
417 void checkMaxThreads();
418 /** @brief Clone serialisable properties only */
419 void cloneProperties(Mlt::Properties &dest, Mlt::Properties &source);
423 /** @brief Refreshes the monitor display. */
425 void slotOsdTimeout();
426 /** @brief Process the clip info requests (in a separate thread). */
427 void processFileProperties();
428 /** @brief A clip with multiple video streams was found, ask what to do. */
429 void slotMultiStreamProducerFound(const QString path, QList<int> audio_list, QList<int> video_list, stringMap data);
430 void showFrame(Mlt::Frame *);
431 void slotCheckSeeking();
435 /** @brief The renderer received a reply to a getFileProperties request. */
436 void replyGetFileProperties(const QString &clipId, Mlt::Producer*, const stringMap &, const stringMap &, bool replaceProducer);
438 /** @brief The renderer received a reply to a getImage request. */
439 void replyGetImage(const QString &, const QString &, int, int);
440 void replyGetImage(const QString &, const QImage &);
442 /** @brief The renderer stopped, either playing or rendering. */
445 /** @brief The renderer started playing. */
446 void playing(double);
448 /** @brief The renderer started rendering. */
449 void rendering(const GenTime &);
451 /** @brief An error occurred within this renderer. */
452 void error(const QString &, const QString &);
453 void durationChanged(int);
454 void rendererPosition(int);
455 void rendererStopped(int);
456 /** @brief The clip is not valid, should be removed from project. */
457 void removeInvalidClip(const QString &, bool replaceProducer);
458 /** @brief The proxy is not valid, should be deleted.
459 * @param id The original clip's id
460 * @param durationError Should be set to true if the proxy failed because it has not same length as original clip
462 void removeInvalidProxy(const QString &id, bool durationError);
463 void refreshDocumentProducers(bool displayRatioChanged, bool fpsChanged);
464 /** @brief A proxy clip is missing, ask for creation. */
465 void requestProxy(QString);
466 /** @brief A multiple stream clip was found. */
467 void multiStreamFound(const QString &,QList<int>,QList<int>,stringMap data);
470 /** @brief A frame's image has to be shown.
472 * Used in Mac OS X. */
473 void showImageSignal(QImage);
474 void showAudioSignal(const QVector<double> &);
475 void addClip(const KUrl &, stringMap);
477 /** @brief Activate current monitor. */
478 void activateMonitor(Kdenlive::MONITORID);
479 void mltFrameReceived(Mlt::Frame *);
483 /** @brief Starts the consumer. */
486 /** @brief Stops the consumer. */
490 /** @brief Checks if the file is readable by MLT. */
491 bool isValid(KUrl url);
493 void exportFileToFirewire(QString srcFileName, int port, GenTime startTime, GenTime endTime);
494 void mltSavePlaylist();
495 void slotSplitView(bool doit);
496 void slotSwitchFullscreen();
497 void slotSetVolume(int volume);
498 void seekToFrame(int pos);
499 /** @brief Starts a timer to query for a refresh. */