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>
68 struct requestClipInfo {
74 bool operator==(const requestClipInfo &a)
76 return clipId == a.clipId;
80 class MltErrorEvent : public QEvent
83 MltErrorEvent(QString message) : QEvent(QEvent::User), m_message(message) {}
84 QString message() const {
93 class Render: public AbstractRender
97 enum FailStates { OK = 0,
100 /** @brief Build a MLT Renderer
101 * @param rendererName A unique identifier for this renderer
102 * @param winid The parent widget identifier (required for SDL display). Set to 0 for OpenGL rendering
103 * @param profile The MLT profile used for the renderer (default one will be used if empty). */
104 Render(Kdenlive::MONITORID rendererName, int winid, QString profile = QString(), QWidget *parent = 0);
106 /** @brief Destroy the MLT Renderer. */
109 /** @brief Seeks the renderer clip to the given time. */
110 void seek(GenTime time);
112 void seekToFrameDiff(int diff);
114 QPixmap getImageThumbnail(KUrl url, int width, int height);
116 /** @brief Sets the current MLT producer playlist.
117 * @param list The xml describing the playlist
118 * @param position (optional) time to seek to */
119 int setSceneList(QDomDocument list, int position = 0);
121 /** @brief Sets the current MLT producer playlist.
122 * @param list new playlist
123 * @param position (optional) time to seek to
124 * @return 0 when it has success, different from 0 otherwise
126 * Creates the producer from the text playlist. */
127 int setSceneList(QString playlist, int position = 0);
128 int setProducer(Mlt::Producer *producer, int position);
130 /** @brief Get the current MLT producer playlist.
131 * @return A string describing the playlist */
132 const QString sceneList();
133 bool saveSceneList(QString path, QDomElement kdenliveData = QDomElement());
135 /** @brief Tells the renderer to play the scene at the specified speed,
136 * @param speed speed to play the scene to
138 * The speed is relative to normal playback, e.g. 1.0 is normal speed, 0.0
139 * is paused, -1.0 means play backwards. It does not specify start/stop */
140 void play(double speed);
141 void switchPlay(bool play);
144 /** @brief Stops playing.
145 * @param startTime time to seek to */
146 void stop(const GenTime &startTime);
149 QImage extractFrame(int frame_position, QString path = QString(), int width = -1, int height = -1);
151 /** @brief Plays the scene starting from a specific time.
152 * @param startTime time to start playing the scene from */
153 void play(const GenTime & startTime);
154 void playZone(const GenTime & startTime, const GenTime & stopTime);
155 void loopZone(const GenTime & startTime, const GenTime & stopTime);
157 void saveZone(KUrl url, QString desc, QPoint zone);
159 /** @brief Save a clip in timeline to an xml playlist. */
160 bool saveClip(int track, GenTime position, KUrl url, QString desc = QString());
162 /** @brief Returns the speed at which the renderer is currently playing.
164 * It returns 0.0 when the renderer is not playing anything. */
165 double playSpeed() const;
167 /** @brief Returns the current seek position of the renderer. */
168 GenTime seekPosition() const;
169 int seekFramePosition() const;
171 void emitFrameUpdated(Mlt::Frame&);
172 void emitFrameNumber();
173 void emitConsumerStopped();
175 /** @brief Returns the aspect ratio of the consumer. */
176 double consumerRatio() const;
178 /** @brief Saves current producer frame as an image. */
179 void exportCurrentFrame(KUrl url, bool notify);
181 /** @brief Change the Mlt PROFILE
182 * @param profileName The MLT profile name
183 * @param dropSceneList If true, the current playlist will be deleted
184 * @return true if the profile was changed
186 int resetProfile(const QString& profileName, bool dropSceneList = false);
187 /** @brief Returns true if the render uses profileName as current profile. */
188 bool hasProfile(const QString& profileName) const;
191 /** @brief Returns the width of a frame for this profile. */
192 int frameRenderWidth() const;
193 /** @brief Returns the display width of a frame for this profile. */
194 int renderWidth() const;
195 /** @brief Returns the height of a frame for this profile. */
196 int renderHeight() const;
198 /** @brief Returns display aspect ratio. */
200 /** @brief Returns sample aspect ratio. */
204 * Playlist manipulation.
206 Mlt::Producer *checkSlowMotionProducer(Mlt::Producer *prod, QDomElement element);
207 int mltInsertClip(ItemInfo info, QDomElement element, Mlt::Producer *prod, bool overwrite = false, bool push = false);
208 bool mltUpdateClip(Mlt::Tractor *tractor, ItemInfo info, QDomElement element, Mlt::Producer *prod);
209 void mltCutClip(int track, GenTime position);
210 void mltInsertSpace(QMap <int, int> trackClipStartList, QMap <int, int> trackTransitionStartList, int track, const GenTime &duration, const GenTime &timeOffset);
211 int mltGetSpaceLength(const GenTime &pos, int track, bool fromBlankStart);
213 /** @brief Returns the duration/length of @param track as reported by the track producer. */
214 int mltTrackDuration(int track);
216 bool mltResizeClipEnd(ItemInfo info, GenTime clipDuration);
217 bool mltResizeClipStart(ItemInfo info, GenTime diff);
218 bool mltResizeClipCrop(ItemInfo info, GenTime newCropStart);
219 bool mltMoveClip(int startTrack, int endTrack, GenTime pos, GenTime moveStart, Mlt::Producer *prod, bool overwrite = false, bool insert = false);
220 bool mltMoveClip(int startTrack, int endTrack, int pos, int moveStart, Mlt::Producer *prod, bool overwrite = false, bool insert = false);
221 bool mltRemoveClip(int track, GenTime position);
223 /** @brief Deletes an effect from a clip in MLT's playlist. */
224 bool mltRemoveEffect(int track, GenTime position, int index, bool updateIndex, bool doRefresh = true);
225 bool mltRemoveTrackEffect(int track, int index, bool updateIndex);
227 /** @brief Adds an effect to a clip in MLT's playlist. */
228 bool mltAddEffect(int track, GenTime position, EffectsParameterList params, bool doRefresh = true);
229 bool addFilterToService(Mlt::Service service, EffectsParameterList params, int duration);
230 bool mltAddEffect(Mlt::Service service, EffectsParameterList params, int duration, bool doRefresh);
231 bool mltAddTrackEffect(int track, EffectsParameterList params);
233 /** @brief Enable / disable clip effects.
234 * @param track The track where the clip is
235 * @param position The start position of the clip
236 * @param effectIndexes The list of effect indexes to enable / disable
237 * @param disable True if effects should be disabled, false otherwise */
238 bool mltEnableEffects(int track, GenTime position, QList <int> effectIndexes, bool disable);
239 /** @brief Enable / disable track effects.
240 * @param track The track where the effect is
241 * @param effectIndexes The list of effect indexes to enable / disable
242 * @param disable True if effects should be disabled, false otherwise */
243 bool mltEnableTrackEffects(int track, QList <int> effectIndexes, bool disable);
245 /** @brief Edits an effect parameters in MLT's playlist. */
246 bool mltEditEffect(int track, GenTime position, EffectsParameterList params);
247 bool mltEditTrackEffect(int track, EffectsParameterList params);
249 /** @brief Updates the "kdenlive_ix" (index) value of an effect. */
250 void mltUpdateEffectPosition(int track, GenTime position, int oldPos, int newPos);
252 /** @brief Changes the order of effects in MLT's playlist.
254 * It switches effects from oldPos and newPos, updating the "kdenlive_ix"
256 void mltMoveEffect(int track, GenTime position, int oldPos, int newPos);
257 void mltMoveTrackEffect(int track, int oldPos, int newPos);
259 /** @brief Enables/disables audio/video in a track. */
260 void mltChangeTrackState(int track, bool mute, bool blind);
261 bool mltMoveTransition(QString type, int startTrack, int newTrack, int newTransitionTrack, GenTime oldIn, GenTime oldOut, GenTime newIn, GenTime newOut);
262 bool mltAddTransition(QString tag, int a_track, int b_track, GenTime in, GenTime out, QDomElement xml, bool refresh = true);
263 void mltDeleteTransition(QString tag, int a_track, int b_track, GenTime in, GenTime out, QDomElement xml, bool refresh = true);
264 void mltUpdateTransition(QString oldTag, QString tag, int a_track, int b_track, GenTime in, GenTime out, QDomElement xml, bool force = false);
265 void mltUpdateTransitionParams(QString type, int a_track, int b_track, GenTime in, GenTime out, QDomElement xml);
266 void mltAddClipTransparency(ItemInfo info, int transitiontrack, int id);
267 void mltMoveTransparency(int startTime, int endTime, int startTrack, int endTrack, int id);
268 void mltDeleteTransparency(int pos, int track, int id);
269 void mltResizeTransparency(int oldStart, int newStart, int newEnd, int track, int id);
270 QList <TransitionInfo> mltInsertTrack(int ix, bool videoTrack);
271 void mltDeleteTrack(int ix);
272 bool mltUpdateClipProducer(Mlt::Tractor *tractor, int track, int pos, Mlt::Producer *prod);
273 void mltPlantTransition(Mlt::Field *field, Mlt::Transition &tr, int a_track, int b_track);
274 Mlt::Producer *invalidProducer(const QString &id);
276 /** @brief Changes the speed of a clip in MLT's playlist.
278 * It creates a new "framebuffer" producer, which must have its "resource"
279 * property set to "video.mpg?0.6", where "video.mpg" is the path to the
280 * clip and "0.6" is the speed in percentage. The newly created producer
281 * will have its "id" property set to "slowmotion:parentid:speed", where
282 * "parentid" is the id of the original clip in the ClipManager list and
283 * "speed" is the current speed. */
284 int mltChangeClipSpeed(ItemInfo info, ItemInfo speedIndependantInfo, double speed, double oldspeed, int strobe, Mlt::Producer *prod);
286 const QList <Mlt::Producer *> producersList();
287 void updatePreviewSettings();
288 void setDropFrames(bool show);
289 QString updateSceneListFps(double current_fps, double new_fps, QString scene);
290 void showFrame(Mlt::Frame&);
292 void showAudio(Mlt::Frame&);
294 QList <int> checkTrackSequence(int);
295 void sendFrameUpdate();
297 /** @brief Returns a pointer to the main producer. */
298 Mlt::Producer *getProducer();
299 /** @brief Returns the number of clips to process (When requesting clip info). */
300 int processingItems();
301 /** @brief Force processing of clip with selected id. */
302 void forceProcessing(const QString &id);
303 /** @brief Are we currently processing clip with selected id. */
304 bool isProcessing(const QString &id);
306 /** @brief Requests the file properties for the specified URL (will be put in a queue list)
307 @param xml The xml parameters for the clip
308 @param clipId The clip Id string
309 @param imageHeight The height (in pixels) of the returned thumbnail (height of a treewidgetitem in projectlist)
310 @param replaceProducer If true, the MLT producer will be recreated */
311 void getFileProperties(const QDomElement &xml, const QString &clipId, int imageHeight, bool replaceProducer = true);
313 /** @brief Lock the MLT service */
314 Mlt::Tractor *lockService();
315 /** @brief Unlock the MLT service */
316 void unlockService(Mlt::Tractor *tractor);
317 const QString activeClipId();
318 /** @brief Fill a combobox with the found blackmagic devices */
319 static bool getBlackMagicDeviceList(KComboBox *devicelist);
320 static bool getBlackMagicOutputDeviceList(KComboBox *devicelist);
321 /** @brief Frame rendering is handeled by Kdenlive, don't show video through SDL display */
322 void disablePreview(bool disable);
326 /** @brief The name of this renderer.
328 * Useful to identify the renderers by what they do - e.g. background
329 * rendering, workspace monitor, etc. */
330 Kdenlive::MONITORID m_name;
331 Mlt::Consumer * m_mltConsumer;
332 Mlt::Producer * m_mltProducer;
333 Mlt::Profile *m_mltProfile;
334 Mlt::Event *m_showFrameEvent;
335 Mlt::Event *m_pauseEvent;
337 bool m_externalConsumer;
339 /** @brief True if we are playing a zone.
341 * It's determined by the "in" and "out" properties being temporarily
348 /** @brief True when the monitor is in split view. */
351 Mlt::Producer *m_blackClip;
352 QString m_activeProfile;
355 QTimer m_refreshTimer;
359 /** @brief A human-readable description of this renderer. */
363 QFuture <void> m_infoThread;
364 QList <requestClipInfo> m_requestList;
367 void mltCheckLength(Mlt::Tractor *tractor);
368 void mltPasteEffects(Mlt::Producer *source, Mlt::Producer *dest);
369 QMap<QString, QString> mltGetTransitionParamsFromXml(QDomElement xml);
370 QMap<QString, Mlt::Producer *> m_slowmotionProducers;
371 /** @brief The id of the clip that is currently being loaded for info query */
372 QString m_processingClipId;
374 /** @brief Build the MLT Consumer object with initial settings.
375 * @param profileName The MLT profile to use for the consumer */
376 void buildConsumer(const QString& profileName);
377 void resetZoneMode();
378 void fillSlowMotionProducers();
379 /** @brief Get the track number of the lowest audible (non muted) audio track
380 * @param return The track number */
381 int getLowestNonMutedAudioTrack(Mlt::Tractor tractor);
383 /** @brief Make sure our audio mixing transitions are applied to the lowest track */
384 void fixAudioMixing(Mlt::Tractor tractor);
385 /** @brief Make sure we inform MLT if we need a lot of threads for avformat producer */
386 void checkMaxThreads();
390 /** @brief Refreshes the monitor display. */
392 void slotOsdTimeout();
393 /** @brief Process the clip info requests (in a separate thread). */
394 void processFileProperties();
398 /** @brief The renderer received a reply to a getFileProperties request. */
399 void replyGetFileProperties(const QString &clipId, Mlt::Producer*, const stringMap &, const stringMap &, bool replaceProducer);
401 /** @brief The renderer received a reply to a getImage request. */
402 void replyGetImage(const QString &, const QString &, int, int);
403 void replyGetImage(const QString &, const QImage &);
405 /** @brief The renderer stopped, either playing or rendering. */
408 /** @brief The renderer started playing. */
409 void playing(double);
411 /** @brief The renderer started rendering. */
412 void rendering(const GenTime &);
414 /** @brief An error occurred within this renderer. */
415 void error(const QString &, const QString &);
416 void durationChanged(int);
417 void rendererPosition(int);
418 void rendererStopped(int);
419 /** @brief The clip is not valid, should be removed from project. */
420 void removeInvalidClip(const QString &, bool replaceProducer);
421 /** @brief The proxy is not valid, should be deleted.
422 * @param id The original clip's id
423 * @param durationError Should be set to true if the proxy failed because it has not same length as original clip
425 void removeInvalidProxy(const QString &id, bool durationError);
426 void refreshDocumentProducers(bool displayRatioChanged, bool fpsChanged);
427 /** @brief A proxy clip is missing, ask for creation. */
428 void requestProxy(QString);
431 /** @brief A frame's image has to be shown.
433 * Used in Mac OS X. */
434 void showImageSignal(QImage);
435 void showAudioSignal(const QByteArray &);
439 /** @brief Starts the consumer. */
442 /** @brief Stops the consumer. */
446 /** @brief Checks if the file is readable by MLT. */
447 bool isValid(KUrl url);
449 void exportFileToFirewire(QString srcFileName, int port, GenTime startTime, GenTime endTime);
450 void mltSavePlaylist();
451 void slotSplitView(bool doit);
452 void slotSwitchFullscreen();
453 void slotSetVolume(int volume);
454 void seekToFrame(int pos);
455 /** @brief Starts a timer to query for a refresh. */