1 /***************************************************************************
2 mltdevicecapture.cpp - description
4 begin : Sun May 21 2011
5 copyright : (C) 2011 by Jean-Baptiste Mardelle (jb@kdenlive.org)
7 ***************************************************************************/
9 /***************************************************************************
11 * This program is free software; you can redistribute it and/or modify *
12 * it under the terms of the GNU General Public License as published by *
13 * the Free Software Foundation; either version 2 of the License, or *
14 * (at your option) any later version. *
16 ***************************************************************************/
19 #include "mltdevicecapture.h"
20 #include "kdenlivesettings.h"
21 #include "definitions.h"
23 #include <mlt++/Mlt.h>
26 #include <KStandardDirs>
27 #include <KMessageBox>
29 #include <KTemporaryFile>
34 #include <QApplication>
44 static void consumer_gl_frame_show(mlt_consumer, MltDeviceCapture * self, mlt_frame frame_ptr)
46 // detect if the producer has finished playing. Is there a better way to do it?
47 Mlt::Frame frame(frame_ptr);
48 self->showFrame(frame);
51 /*static void rec_consumer_frame_show(mlt_consumer, MltDeviceCapture * self, mlt_frame frame_ptr)
53 Mlt::Frame frame(frame_ptr);
54 if (!frame.is_valid()) return;
55 self->gotCapturedFrame(frame);
58 static void rec_consumer_frame_preview(mlt_consumer, MltDeviceCapture * self, mlt_frame frame_ptr)
60 Mlt::Frame frame(frame_ptr);
61 if (!frame.is_valid()) return;
62 if (self->sendFrameForAnalysis && frame_ptr->convert_image) {
63 self->emitFrameUpdated(frame);
65 if (self->doCapture > 0) {
67 if (self->doCapture == 0) self->saveFrame(frame);
70 //TODO: connect record monitor to audio scopes
72 if (self->analyseAudio) {
73 self->showAudio(frame);
79 MltDeviceCapture::MltDeviceCapture(QString profile, VideoSurface *surface, QWidget *parent) :
80 AbstractRender(Kdenlive::recordMonitor, parent),
82 sendFrameForAnalysis(false),
83 processingImage(false),
87 m_showFrameEvent(NULL),
89 m_livePreview(KdenliveSettings::enable_recording_preview()),
90 m_winid((int) surface->winId())
92 m_captureDisplayWidget = surface;
93 analyseAudio = KdenliveSettings::monitor_audio();
94 if (profile.isEmpty()) profile = KdenliveSettings::current_profile();
95 buildConsumer(profile);
96 connect(this, SIGNAL(unblockPreview()), this, SLOT(slotPreparePreview()));
97 m_droppedFramesTimer.setSingleShot(false);
98 m_droppedFramesTimer.setInterval(1000);
99 connect(&m_droppedFramesTimer, SIGNAL(timeout()), this, SLOT(slotCheckDroppedFrames()));
102 MltDeviceCapture::~MltDeviceCapture()
104 if (m_mltConsumer) delete m_mltConsumer;
105 if (m_mltProducer) delete m_mltProducer;
106 if (m_mltProfile) delete m_mltProfile;
109 void MltDeviceCapture::buildConsumer(const QString &profileName)
111 if (!profileName.isEmpty()) m_activeProfile = profileName;
113 if (m_mltProfile) delete m_mltProfile;
115 char *tmp = qstrdup(m_activeProfile.toUtf8().constData());
116 setenv("MLT_PROFILE", tmp, 1);
117 m_mltProfile = new Mlt::Profile(tmp);
118 m_mltProfile->set_explicit(true);
121 QString videoDriver = KdenliveSettings::videodrivername();
122 if (!videoDriver.isEmpty()) {
123 if (videoDriver == "x11_noaccel") {
124 setenv("SDL_VIDEO_YUV_HWACCEL", "0", 1);
127 unsetenv("SDL_VIDEO_YUV_HWACCEL");
130 setenv("SDL_VIDEO_ALLOW_SCREENSAVER", "1", 1);
135 m_mltConsumer = new Mlt::Consumer(*m_mltProfile, "sdl_audio");
136 m_mltConsumer->set("preview_off", 1);
137 m_mltConsumer->set("preview_format", mlt_image_rgb24);
138 m_showFrameEvent = m_mltConsumer->listen("consumer-frame-show", this, (mlt_listener) consumer_gl_frame_show);
140 m_mltConsumer = new Mlt::Consumer(*m_mltProfile, "sdl_preview");
141 m_mltConsumer->set("window_id", m_winid);
142 m_showFrameEvent = m_mltConsumer->listen("consumer-frame-show", this, (mlt_listener) rec_consumer_frame_preview);
144 //m_mltConsumer->set("resize", 1);
145 //m_mltConsumer->set("terminate_on_pause", 1);
146 m_mltConsumer->set("window_background", KdenliveSettings::window_background().name().toUtf8().constData());
147 //m_mltConsumer->set("rescale", "nearest");
149 QString audioDevice = KdenliveSettings::audiodevicename();
150 if (!audioDevice.isEmpty())
151 m_mltConsumer->set("audio_device", audioDevice.toUtf8().constData());
153 if (!videoDriver.isEmpty())
154 m_mltConsumer->set("video_driver", videoDriver.toUtf8().constData());
156 QString audioDriver = KdenliveSettings::audiodrivername();
158 if (!audioDriver.isEmpty())
159 m_mltConsumer->set("audio_driver", audioDriver.toUtf8().constData());
161 //m_mltConsumer->set("progressive", 0);
162 //m_mltConsumer->set("buffer", 1);
163 //m_mltConsumer->set("real_time", 0);
166 void MltDeviceCapture::pause()
169 m_mltConsumer->set("refresh", 0);
170 //m_mltProducer->set_speed(0.0);
171 m_mltConsumer->purge();
175 void MltDeviceCapture::stop()
177 m_droppedFramesTimer.stop();
178 bool isPlaylist = false;
179 //disconnect(this, SIGNAL(imageReady(QImage)), this, SIGNAL(frameUpdated(QImage)));
180 //m_captureDisplayWidget->stop();
182 if (m_showFrameEvent) delete m_showFrameEvent;
183 m_showFrameEvent = NULL;
186 m_mltConsumer->set("refresh", 0);
187 m_mltConsumer->purge();
188 m_mltConsumer->stop();
189 //if (!m_mltConsumer->is_stopped()) m_mltConsumer->stop();
192 QList <Mlt::Producer *> prods;
193 Mlt::Service service(m_mltProducer->parent().get_service());
194 mlt_service_lock(service.get_service());
195 if (service.type() == tractor_type) {
197 Mlt::Tractor tractor(service);
198 mlt_tractor_close(tractor.get_tractor());
199 Mlt::Field *field = tractor.field();
200 mlt_service nextservice = mlt_service_get_producer(service.get_service());
201 mlt_service nextservicetodisconnect;
202 mlt_properties properties = MLT_SERVICE_PROPERTIES(nextservice);
203 QString mlt_type = mlt_properties_get(properties, "mlt_type");
204 QString resource = mlt_properties_get(properties, "mlt_service");
205 // Delete all transitions
206 while (mlt_type == "transition") {
207 nextservicetodisconnect = nextservice;
208 nextservice = mlt_service_producer(nextservice);
209 mlt_field_disconnect_service(field->get_field(), nextservicetodisconnect);
210 if (nextservice == NULL) break;
211 properties = MLT_SERVICE_PROPERTIES(nextservice);
212 mlt_type = mlt_properties_get(properties, "mlt_type");
213 resource = mlt_properties_get(properties, "mlt_service");
218 mlt_service_unlock(service.get_service());
219 delete m_mltProducer;
220 m_mltProducer = NULL;
222 // For some reason, the consumer seems to be deleted by previous stuff when in playlist mode
223 if (!isPlaylist && m_mltConsumer) delete m_mltConsumer;
224 m_mltConsumer = NULL;
228 void MltDeviceCapture::slotDoRefresh()
230 QMutexLocker locker(&m_mutex);
234 if (m_mltConsumer->is_stopped()) m_mltConsumer->start();
235 m_mltConsumer->purge();
236 m_mltConsumer->set("refresh", 1);
241 void MltDeviceCapture::emitFrameUpdated(Mlt::Frame& frame)
244 //TEST: is it better to convert the frame in a thread outside of MLT??
245 if (processingImage) return;
246 mlt_image_format format = (mlt_image_format) frame.get_int("format"); //mlt_image_rgb24;
247 int width = frame.get_int("width");
248 int height = frame.get_int("height");
249 unsigned char *buffer = (unsigned char *) frame.get_data("image");
250 if (format == mlt_image_yuv422) {
251 QtConcurrent::run(this, &MltDeviceCapture::uyvy2rgb, (unsigned char *) buffer, width, height);
255 mlt_image_format format = mlt_image_rgb24a;
258 const uchar* image = frame.get_image(format, width, height);
259 QImage qimage(width, height, QImage::Format_ARGB32_Premultiplied);
260 memcpy(qimage.bits(), image, width * height * 4);
261 emit frameUpdated(qimage.rgbSwapped());
264 void MltDeviceCapture::showFrame(Mlt::Frame& frame)
266 mlt_image_format format = mlt_image_rgb24;
269 const uchar* image = frame.get_image(format, width, height);
270 QImage qimage(width, height, QImage::Format_RGB888);
271 memcpy(qimage.scanLine(0), image, width * height * 3);
272 emit showImageSignal(qimage);
274 if (sendFrameForAnalysis && frame.get_frame()->convert_image) {
275 emit frameUpdated(qimage.rgbSwapped());
279 void MltDeviceCapture::showAudio(Mlt::Frame& frame)
281 if (!frame.is_valid() || frame.get_int("test_audio") != 0) {
284 mlt_audio_format audio_format = mlt_audio_s16;
286 int num_channels = 0;
288 int16_t* data = (int16_t*)frame.get_audio(audio_format, freq, num_channels, samples);
294 // Data format: [ c00 c10 c01 c11 c02 c12 c03 c13 ... c0{samples-1} c1{samples-1} for 2 channels.
295 // So the vector is of size samples*channels.
296 QVector<int16_t> sampleVector(samples*num_channels);
297 memcpy(sampleVector.data(), data, samples*num_channels*sizeof(int16_t));
299 emit audioSamplesSignal(sampleVector, freq, num_channels, samples);
303 bool MltDeviceCapture::slotStartPreview(const QString &producer, bool xmlFormat)
305 if (m_mltConsumer == NULL) {
308 char *tmp = qstrdup(producer.toUtf8().constData());
309 if (xmlFormat) m_mltProducer = new Mlt::Producer(*m_mltProfile, "xml-string", tmp);
310 else m_mltProducer = new Mlt::Producer(*m_mltProfile, tmp);
313 if (m_mltProducer == NULL || !m_mltProducer->is_valid()) {
315 delete m_mltProducer;
316 m_mltProducer = NULL;
318 kDebug()<<"//// ERROR CREATRING PROD";
321 m_mltConsumer->connect(*m_mltProducer);
322 if (m_mltConsumer->start() == -1) {
323 delete m_mltConsumer;
324 m_mltConsumer = NULL;
327 m_droppedFramesTimer.start();
328 //connect(this, SIGNAL(imageReady(QImage)), this, SIGNAL(frameUpdated(QImage)));
332 void MltDeviceCapture::slotCheckDroppedFrames()
335 int dropped = m_mltProducer->get_int("dropped");
336 if (dropped > m_droppedFrames) {
337 m_droppedFrames = dropped;
338 emit droppedFrames(m_droppedFrames);
343 void MltDeviceCapture::gotCapturedFrame(Mlt::Frame& frame)
346 int dropped = m_mltProducer->get_int("dropped");
347 if (dropped > m_droppedFrames) {
348 m_droppedFrames = dropped;
349 emit droppedFrames(m_droppedFrames);
353 if (!m_livePreview) return;
354 //if (m_livePreview == 0 && (m_frameCount % 10 > 0)) return;
355 mlt_image_format format = mlt_image_rgb24;
358 uint8_t *data = frame.get_image(format, width, height, 0);
359 //QImage image(width, height, QImage::Format_RGB888);
360 //memcpy(image.bits(), data, width * height * 3);
361 QImage image((uchar *)data, width, height, QImage::Format_RGB888);
363 //m_captureDisplayWidget->setImage(image);
365 //TEST: is it better to process frame conversion ouside MLT???
367 if (!m_livePreview || processingImage) return;
369 mlt_image_format format = (mlt_image_format) frame.get_int("format"); //mlt_image_rgb24a;
370 int width = frame.get_int("width");
371 int height = frame.get_int("height");
372 unsigned char *buffer = (unsigned char *) frame.get_data("image");
373 //unsigned char *buffer = frame.get_image(format, width, height);
374 //convert from uyvy422 to rgba
375 if (format == mlt_image_yuv422) {
376 QtConcurrent::run(this, &MltDeviceCapture::uyvy2rgb, (unsigned char *) buffer, width, height);
377 //CaptureHandler::uyvy2rgb((uchar *)frameBytes, (uchar *)image.bits(), videoFrame->GetWidth(), videoFrame->GetHeight());
381 void MltDeviceCapture::saveFrame(Mlt::Frame& frame)
383 mlt_image_format format = mlt_image_rgb24;
386 const uchar* image = frame.get_image(format, width, height);
387 QImage qimage(width, height, QImage::Format_RGB888);
388 memcpy(qimage.bits(), image, width * height * 3);
391 Mlt::Service service(m_mltProducer->parent().get_service());
392 Mlt::Tractor tractor(service);
393 Mlt::Producer trackProducer(tractor.track(0));
394 trackProducer.set("hide", 0);
396 qimage.save(m_capturePath);
397 emit frameSaved(m_capturePath);
398 m_capturePath.clear();
401 void MltDeviceCapture::captureFrame(const QString &path)
403 if (m_mltProducer == NULL || !m_mltProducer->is_valid()) return;
405 // Hide overlay track before doing the capture
406 Mlt::Service service(m_mltProducer->parent().get_service());
407 Mlt::Tractor tractor(service);
408 Mlt::Producer trackProducer(tractor.track(0));
409 mlt_service_lock(service.get_service());
410 trackProducer.set("hide", 1);
411 m_mltConsumer->purge();
412 mlt_service_unlock(service.get_service());
413 m_capturePath = path;
414 // Wait for 5 frames before capture to make sure overlay is gone
418 bool MltDeviceCapture::slotStartCapture(const QString ¶ms, const QString &path, const QString &playlist, bool livePreview, bool xmlPlaylist)
421 m_livePreview = livePreview;
424 if (m_mltProfile) delete m_mltProfile;
425 char *tmp = qstrdup(m_activeProfile.toUtf8().constData());
426 m_mltProfile = new Mlt::Profile(tmp);
428 //m_mltProfile->get_profile()->is_explicit = 1;
431 /*kDebug()<<"-- CREATING CAP: "<<params<<", PATH: "<<path;
432 tmp = qstrdup(QString("avformat:" + path).toUtf8().constData());
433 m_mltConsumer = new Mlt::Consumer(*m_mltProfile, tmp);
434 m_mltConsumer->set("real_time", -KdenliveSettings::mltthreads());
437 m_mltConsumer = new Mlt::Consumer(*m_mltProfile, "multi");
438 if (m_mltConsumer == NULL || !m_mltConsumer->is_valid()) {
440 delete m_mltConsumer;
441 m_mltConsumer = NULL;
446 m_winid = (int) m_captureDisplayWidget->winId();
448 // Create multi consumer setup
449 Mlt::Properties *renderProps = new Mlt::Properties;
450 renderProps->set("mlt_service", "avformat");
451 renderProps->set("target", path.toUtf8().constData());
452 renderProps->set("real_time", -KdenliveSettings::mltthreads());
453 //renderProps->set("terminate_on_pause", 0);
454 renderProps->set("mlt_profile", m_activeProfile.toUtf8().constData());
457 QStringList paramList = params.split(' ', QString::SkipEmptyParts);
459 for (int i = 0; i < paramList.count(); i++) {
460 tmp = qstrdup(paramList.at(i).section('=', 0, 0).toUtf8().constData());
461 QString value = paramList.at(i).section('=', 1, 1);
462 if (value == "%threads") value = QString::number(QThread::idealThreadCount());
463 tmp2 = qstrdup(value.toUtf8().constData());
464 renderProps->set(tmp, tmp2);
468 mlt_properties consumerProperties = m_mltConsumer->get_properties();
469 mlt_properties_set_data(consumerProperties, "0", renderProps->get_properties(), 0, (mlt_destructor) mlt_properties_close, NULL);
473 // user wants live preview
474 Mlt::Properties *previewProps = new Mlt::Properties;
475 QString videoDriver = KdenliveSettings::videodrivername();
476 if (!videoDriver.isEmpty()) {
477 if (videoDriver == "x11_noaccel") {
478 setenv("SDL_VIDEO_YUV_HWACCEL", "0", 1);
481 unsetenv("SDL_VIDEO_YUV_HWACCEL");
484 setenv("SDL_VIDEO_ALLOW_SCREENSAVER", "1", 1);
488 previewProps->set("mlt_service", "sdl_audio");
489 previewProps->set("preview_off", 1);
490 previewProps->set("preview_format", mlt_image_rgb24);
491 previewProps->set("terminate_on_pause", 0);
492 m_showFrameEvent = m_mltConsumer->listen("consumer-frame-show", this, (mlt_listener) consumer_gl_frame_show);
494 previewProps->set("mlt_service", "sdl_preview");
495 previewProps->set("window_id", m_winid);
496 previewProps->set("terminate_on_pause", 0);
497 //m_showFrameEvent = m_mltConsumer->listen("consumer-frame-show", this, (mlt_listener) rec_consumer_frame_preview);
499 //m_mltConsumer->set("resize", 1);
500 previewProps->set("window_background", KdenliveSettings::window_background().name().toUtf8().constData());
501 QString audioDevice = KdenliveSettings::audiodevicename();
502 if (!audioDevice.isEmpty())
503 previewProps->set("audio_device", audioDevice.toUtf8().constData());
505 if (!videoDriver.isEmpty())
506 previewProps->set("video_driver", videoDriver.toUtf8().constData());
508 QString audioDriver = KdenliveSettings::audiodrivername();
510 if (!audioDriver.isEmpty())
511 previewProps->set("audio_driver", audioDriver.toUtf8().constData());
513 previewProps->set("real_time", "0");
514 previewProps->set("mlt_profile", m_activeProfile.toUtf8().constData());
515 mlt_properties_set_data(consumerProperties, "1", previewProps->get_properties(), 0, (mlt_destructor) mlt_properties_close, NULL);
516 //m_showFrameEvent = m_mltConsumer->listen("consumer-frame-render", this, (mlt_listener) rec_consumer_frame_show);
523 // create an xml producer
524 m_mltProducer = new Mlt::Producer(*m_mltProfile, "xml-string", playlist.toUtf8().constData());
527 // create a producer based on mltproducer parameter
528 m_mltProducer = new Mlt::Producer(*m_mltProfile, playlist.toUtf8().constData());
531 if (m_mltProducer == NULL || !m_mltProducer->is_valid()) {
532 kDebug()<<"//// ERROR CREATRING PROD";
534 delete m_mltConsumer;
535 m_mltConsumer = NULL;
538 delete m_mltProducer;
539 m_mltProducer = NULL;
544 m_mltConsumer->connect(*m_mltProducer);
545 if (m_mltConsumer->start() == -1) {
546 if (m_showFrameEvent) delete m_showFrameEvent;
547 m_showFrameEvent = NULL;
548 delete m_mltConsumer;
549 m_mltConsumer = NULL;
552 m_droppedFramesTimer.start();
557 void MltDeviceCapture::setOverlay(const QString &path)
559 if (m_mltProducer == NULL || !m_mltProducer->is_valid()) return;
560 Mlt::Producer parentProd(m_mltProducer->parent());
561 if (parentProd.get_producer() == NULL) {
562 kDebug() << "PLAYLIST BROKEN, CANNOT INSERT CLIP //////";
566 Mlt::Service service(parentProd.get_service());
567 if (service.type() != tractor_type) {
568 kWarning() << "// TRACTOR PROBLEM";
571 Mlt::Tractor tractor(service);
572 if ( tractor.count() < 2) {
573 kWarning() << "// TRACTOR PROBLEM";
576 mlt_service_lock(service.get_service());
577 Mlt::Producer trackProducer(tractor.track(0));
578 Mlt::Playlist trackPlaylist((mlt_playlist) trackProducer.get_service());
580 trackPlaylist.remove(0);
581 if (path.isEmpty()) {
582 mlt_service_unlock(service.get_service());
587 char *tmp = qstrdup(path.toUtf8().constData());
588 Mlt::Producer *clip = new Mlt::Producer (*m_mltProfile, "loader", tmp);
590 clip->set_in_and_out(0, 99999);
591 trackPlaylist.insert_at(0, clip, 1);
594 mlt_service serv = m_mltProducer->parent().get_service();
595 mlt_service nextservice = mlt_service_get_producer(serv);
596 mlt_properties properties = MLT_SERVICE_PROPERTIES(nextservice);
597 QString mlt_type = mlt_properties_get(properties, "mlt_type");
598 if (mlt_type != "transition") {
599 // transition does not exist, add it
600 Mlt::Field *field = tractor.field();
601 Mlt::Transition *transition = new Mlt::Transition(*m_mltProfile, "composite");
602 transition->set_in_and_out(0, 0);
603 transition->set("geometry", "0/0:100%x100%:70");
604 transition->set("fill", 1);
605 transition->set("operator", "and");
606 transition->set("a_track", 0);
607 transition->set("b_track", 1);
608 field->plant_transition(*transition, 0, 1);
610 mlt_service_unlock(service.get_service());
614 void MltDeviceCapture::setOverlayEffect(const QString &tag, QStringList parameters)
616 if (m_mltProducer == NULL || !m_mltProducer->is_valid()) return;
617 Mlt::Service service(m_mltProducer->parent().get_service());
618 Mlt::Tractor tractor(service);
619 Mlt::Producer trackProducer(tractor.track(0));
620 Mlt::Playlist trackPlaylist((mlt_playlist) trackProducer.get_service());
621 Mlt::Service trackService(trackProducer.get_service());
623 mlt_service_lock(service.get_service());
625 // delete previous effects
627 filter = trackService.filter(0);
628 if (filter && !tag.isEmpty()) {
629 QString currentService = filter->get("mlt_service");
630 if (currentService == tag) {
631 // Effect is already there
632 mlt_service_unlock(service.get_service());
637 trackService.detach(*filter);
639 filter = trackService.filter(0);
643 mlt_service_unlock(service.get_service());
647 char *tmp = qstrdup(tag.toUtf8().constData());
648 filter = new Mlt::Filter(*m_mltProfile, tmp);
650 if (filter && filter->is_valid()) {
651 for (int j = 0; j < parameters.count(); j++) {
652 filter->set(parameters.at(j).section('=', 0, 0).toUtf8().constData(), parameters.at(j).section('=', 1, 1).toUtf8().constData());
654 trackService.attach(*filter);
656 mlt_service_unlock(service.get_service());
659 void MltDeviceCapture::mirror(bool activate)
661 if (m_mltProducer == NULL || !m_mltProducer->is_valid()) return;
662 Mlt::Service service(m_mltProducer->parent().get_service());
663 Mlt::Tractor tractor(service);
664 Mlt::Producer trackProducer(tractor.track(1));
665 Mlt::Playlist trackPlaylist((mlt_playlist) trackProducer.get_service());
666 Mlt::Service trackService(trackProducer.get_service());
668 mlt_service_lock(service.get_service());
670 // delete previous effects
672 filter = trackService.filter(0);
674 trackService.detach(*filter);
676 filter = trackService.filter(0);
680 mlt_service_unlock(service.get_service());
684 filter = new Mlt::Filter(*m_mltProfile, "mirror");
685 if (filter && filter->is_valid()) {
686 filter->set("mirror", "flip");
687 trackService.attach(*filter);
689 mlt_service_unlock(service.get_service());
692 void MltDeviceCapture::uyvy2rgb(unsigned char *yuv_buffer, int width, int height)
694 processingImage = true;
695 QImage image(width, height, QImage::Format_RGB888);
696 unsigned char *rgb_buffer = image.bits();
701 int rgb_ptr, y_ptr, t;
703 len = width * height / 2;
708 for (t = 0; t < len; t++) {
711 Y = yuv_buffer[y_ptr];
712 U = yuv_buffer[y_ptr+1];
713 Y2 = yuv_buffer[y_ptr+2];
714 V = yuv_buffer[y_ptr+3];
717 r = ((298 * (Y - 16) + 409 * (V - 128) + 128) >> 8);
719 g = ((298 * (Y - 16) - 100 * (U - 128) - 208 * (V - 128) + 128) >> 8);
721 b = ((298 * (Y - 16) + 516 * (U - 128) + 128) >> 8);
723 if (r > 255) r = 255;
724 if (g > 255) g = 255;
725 if (b > 255) b = 255;
731 rgb_buffer[rgb_ptr] = r;
732 rgb_buffer[rgb_ptr+1] = g;
733 rgb_buffer[rgb_ptr+2] = b;
737 r = ((298 * (Y2 - 16) + 409 * (V - 128) + 128) >> 8);
739 g = ((298 * (Y2 - 16) - 100 * (U - 128) - 208 * (V - 128) + 128) >> 8);
741 b = ((298 * (Y2 - 16) + 516 * (U - 128) + 128) >> 8);
743 if (r > 255) r = 255;
744 if (g > 255) g = 255;
745 if (b > 255) b = 255;
751 rgb_buffer[rgb_ptr] = r;
752 rgb_buffer[rgb_ptr+1] = g;
753 rgb_buffer[rgb_ptr+2] = b;
756 //emit imageReady(image);
757 //m_captureDisplayWidget->setImage(image);
758 emit unblockPreview();
759 //processingImage = false;
762 void MltDeviceCapture::slotPreparePreview()
764 QTimer::singleShot(1000, this, SLOT(slotAllowPreview()));
767 void MltDeviceCapture::slotAllowPreview()
769 processingImage = false;