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_rgb24;
258 const uchar* image = frame.get_image(format, width, height);
259 QImage qimage(width, height, QImage::Format_RGB888);
260 //QImage qimage(width, height, QImage::Format_ARGB32_Premultiplied);
261 memcpy(qimage.bits(), image, width * height * 3);
262 emit frameUpdated(qimage);
265 void MltDeviceCapture::showFrame(Mlt::Frame& frame)
267 mlt_image_format format = mlt_image_rgb24;
270 const uchar* image = frame.get_image(format, width, height);
271 QImage qimage(width, height, QImage::Format_RGB888);
272 memcpy(qimage.scanLine(0), image, width * height * 3);
273 emit showImageSignal(qimage);
275 if (sendFrameForAnalysis && frame.get_frame()->convert_image) {
276 emit frameUpdated(qimage.rgbSwapped());
280 void MltDeviceCapture::showAudio(Mlt::Frame& frame)
282 if (!frame.is_valid() || frame.get_int("test_audio") != 0) {
285 mlt_audio_format audio_format = mlt_audio_s16;
287 int num_channels = 0;
289 int16_t* data = (int16_t*)frame.get_audio(audio_format, freq, num_channels, samples);
295 // Data format: [ c00 c10 c01 c11 c02 c12 c03 c13 ... c0{samples-1} c1{samples-1} for 2 channels.
296 // So the vector is of size samples*channels.
297 QVector<int16_t> sampleVector(samples*num_channels);
298 memcpy(sampleVector.data(), data, samples*num_channels*sizeof(int16_t));
300 emit audioSamplesSignal(sampleVector, freq, num_channels, samples);
304 bool MltDeviceCapture::slotStartPreview(const QString &producer, bool xmlFormat)
306 if (m_mltConsumer == NULL) {
309 char *tmp = qstrdup(producer.toUtf8().constData());
310 if (xmlFormat) m_mltProducer = new Mlt::Producer(*m_mltProfile, "xml-string", tmp);
311 else m_mltProducer = new Mlt::Producer(*m_mltProfile, tmp);
314 if (m_mltProducer == NULL || !m_mltProducer->is_valid()) {
316 delete m_mltProducer;
317 m_mltProducer = NULL;
319 kDebug()<<"//// ERROR CREATRING PROD";
322 m_mltConsumer->connect(*m_mltProducer);
323 if (m_mltConsumer->start() == -1) {
324 delete m_mltConsumer;
325 m_mltConsumer = NULL;
328 m_droppedFramesTimer.start();
329 //connect(this, SIGNAL(imageReady(QImage)), this, SIGNAL(frameUpdated(QImage)));
333 void MltDeviceCapture::slotCheckDroppedFrames()
336 int dropped = m_mltProducer->get_int("dropped");
337 if (dropped > m_droppedFrames) {
338 m_droppedFrames = dropped;
339 emit droppedFrames(m_droppedFrames);
344 void MltDeviceCapture::gotCapturedFrame(Mlt::Frame& frame)
347 int dropped = m_mltProducer->get_int("dropped");
348 if (dropped > m_droppedFrames) {
349 m_droppedFrames = dropped;
350 emit droppedFrames(m_droppedFrames);
354 if (!m_livePreview) return;
355 //if (m_livePreview == 0 && (m_frameCount % 10 > 0)) return;
356 mlt_image_format format = mlt_image_rgb24;
359 uint8_t *data = frame.get_image(format, width, height, 0);
360 //QImage image(width, height, QImage::Format_RGB888);
361 //memcpy(image.bits(), data, width * height * 3);
362 QImage image((uchar *)data, width, height, QImage::Format_RGB888);
364 //m_captureDisplayWidget->setImage(image);
366 //TEST: is it better to process frame conversion ouside MLT???
368 if (!m_livePreview || processingImage) return;
370 mlt_image_format format = (mlt_image_format) frame.get_int("format"); //mlt_image_rgb24a;
371 int width = frame.get_int("width");
372 int height = frame.get_int("height");
373 unsigned char *buffer = (unsigned char *) frame.get_data("image");
374 //unsigned char *buffer = frame.get_image(format, width, height);
375 //convert from uyvy422 to rgba
376 if (format == mlt_image_yuv422) {
377 QtConcurrent::run(this, &MltDeviceCapture::uyvy2rgb, (unsigned char *) buffer, width, height);
378 //CaptureHandler::uyvy2rgb((uchar *)frameBytes, (uchar *)image.bits(), videoFrame->GetWidth(), videoFrame->GetHeight());
382 void MltDeviceCapture::saveFrame(Mlt::Frame& frame)
384 mlt_image_format format = mlt_image_rgb24;
387 const uchar* image = frame.get_image(format, width, height);
388 QImage qimage(width, height, QImage::Format_RGB888);
389 memcpy(qimage.bits(), image, width * height * 3);
392 Mlt::Service service(m_mltProducer->parent().get_service());
393 Mlt::Tractor tractor(service);
394 Mlt::Producer trackProducer(tractor.track(0));
395 trackProducer.set("hide", 0);
397 qimage.save(m_capturePath);
398 emit frameSaved(m_capturePath);
399 m_capturePath.clear();
402 void MltDeviceCapture::captureFrame(const QString &path)
404 if (m_mltProducer == NULL || !m_mltProducer->is_valid()) return;
406 // Hide overlay track before doing the capture
407 Mlt::Service service(m_mltProducer->parent().get_service());
408 Mlt::Tractor tractor(service);
409 Mlt::Producer trackProducer(tractor.track(0));
410 mlt_service_lock(service.get_service());
411 trackProducer.set("hide", 1);
412 m_mltConsumer->purge();
413 mlt_service_unlock(service.get_service());
414 m_capturePath = path;
415 // Wait for 5 frames before capture to make sure overlay is gone
419 bool MltDeviceCapture::slotStartCapture(const QString ¶ms, const QString &path, const QString &playlist, bool livePreview, bool xmlPlaylist)
422 m_livePreview = livePreview;
425 if (m_mltProfile) delete m_mltProfile;
426 char *tmp = qstrdup(m_activeProfile.toUtf8().constData());
427 m_mltProfile = new Mlt::Profile(tmp);
429 //m_mltProfile->get_profile()->is_explicit = 1;
432 /*kDebug()<<"-- CREATING CAP: "<<params<<", PATH: "<<path;
433 tmp = qstrdup(QString("avformat:" + path).toUtf8().constData());
434 m_mltConsumer = new Mlt::Consumer(*m_mltProfile, tmp);
435 m_mltConsumer->set("real_time", -KdenliveSettings::mltthreads());
438 m_mltConsumer = new Mlt::Consumer(*m_mltProfile, "multi");
439 if (m_mltConsumer == NULL || !m_mltConsumer->is_valid()) {
441 delete m_mltConsumer;
442 m_mltConsumer = NULL;
447 m_winid = (int) m_captureDisplayWidget->winId();
449 // Create multi consumer setup
450 Mlt::Properties *renderProps = new Mlt::Properties;
451 renderProps->set("mlt_service", "avformat");
452 renderProps->set("target", path.toUtf8().constData());
453 renderProps->set("real_time", -KdenliveSettings::mltthreads());
454 //renderProps->set("terminate_on_pause", 0);
455 renderProps->set("mlt_profile", m_activeProfile.toUtf8().constData());
458 QStringList paramList = params.split(' ', QString::SkipEmptyParts);
460 for (int i = 0; i < paramList.count(); i++) {
461 tmp = qstrdup(paramList.at(i).section('=', 0, 0).toUtf8().constData());
462 QString value = paramList.at(i).section('=', 1, 1);
463 if (value == "%threads") value = QString::number(QThread::idealThreadCount());
464 tmp2 = qstrdup(value.toUtf8().constData());
465 renderProps->set(tmp, tmp2);
469 mlt_properties consumerProperties = m_mltConsumer->get_properties();
470 mlt_properties_set_data(consumerProperties, "0", renderProps->get_properties(), 0, (mlt_destructor) mlt_properties_close, NULL);
474 // user wants live preview
475 Mlt::Properties *previewProps = new Mlt::Properties;
476 QString videoDriver = KdenliveSettings::videodrivername();
477 if (!videoDriver.isEmpty()) {
478 if (videoDriver == "x11_noaccel") {
479 setenv("SDL_VIDEO_YUV_HWACCEL", "0", 1);
482 unsetenv("SDL_VIDEO_YUV_HWACCEL");
485 setenv("SDL_VIDEO_ALLOW_SCREENSAVER", "1", 1);
489 previewProps->set("mlt_service", "sdl_audio");
490 previewProps->set("preview_off", 1);
491 previewProps->set("preview_format", mlt_image_rgb24);
492 previewProps->set("terminate_on_pause", 0);
493 m_showFrameEvent = m_mltConsumer->listen("consumer-frame-show", this, (mlt_listener) consumer_gl_frame_show);
495 previewProps->set("mlt_service", "sdl_preview");
496 previewProps->set("window_id", m_winid);
497 previewProps->set("terminate_on_pause", 0);
498 //m_showFrameEvent = m_mltConsumer->listen("consumer-frame-show", this, (mlt_listener) rec_consumer_frame_preview);
500 //m_mltConsumer->set("resize", 1);
501 previewProps->set("window_background", KdenliveSettings::window_background().name().toUtf8().constData());
502 QString audioDevice = KdenliveSettings::audiodevicename();
503 if (!audioDevice.isEmpty())
504 previewProps->set("audio_device", audioDevice.toUtf8().constData());
506 if (!videoDriver.isEmpty())
507 previewProps->set("video_driver", videoDriver.toUtf8().constData());
509 QString audioDriver = KdenliveSettings::audiodrivername();
511 if (!audioDriver.isEmpty())
512 previewProps->set("audio_driver", audioDriver.toUtf8().constData());
514 previewProps->set("real_time", "0");
515 previewProps->set("mlt_profile", m_activeProfile.toUtf8().constData());
516 mlt_properties_set_data(consumerProperties, "1", previewProps->get_properties(), 0, (mlt_destructor) mlt_properties_close, NULL);
517 //m_showFrameEvent = m_mltConsumer->listen("consumer-frame-render", this, (mlt_listener) rec_consumer_frame_show);
524 // create an xml producer
525 m_mltProducer = new Mlt::Producer(*m_mltProfile, "xml-string", playlist.toUtf8().constData());
528 // create a producer based on mltproducer parameter
529 m_mltProducer = new Mlt::Producer(*m_mltProfile, playlist.toUtf8().constData());
532 if (m_mltProducer == NULL || !m_mltProducer->is_valid()) {
533 kDebug()<<"//// ERROR CREATRING PROD";
535 delete m_mltConsumer;
536 m_mltConsumer = NULL;
539 delete m_mltProducer;
540 m_mltProducer = NULL;
545 m_mltConsumer->connect(*m_mltProducer);
546 if (m_mltConsumer->start() == -1) {
547 if (m_showFrameEvent) delete m_showFrameEvent;
548 m_showFrameEvent = NULL;
549 delete m_mltConsumer;
550 m_mltConsumer = NULL;
553 m_droppedFramesTimer.start();
558 void MltDeviceCapture::setOverlay(const QString &path)
560 if (m_mltProducer == NULL || !m_mltProducer->is_valid()) return;
561 Mlt::Producer parentProd(m_mltProducer->parent());
562 if (parentProd.get_producer() == NULL) {
563 kDebug() << "PLAYLIST BROKEN, CANNOT INSERT CLIP //////";
567 Mlt::Service service(parentProd.get_service());
568 if (service.type() != tractor_type) {
569 kWarning() << "// TRACTOR PROBLEM";
572 Mlt::Tractor tractor(service);
573 if ( tractor.count() < 2) {
574 kWarning() << "// TRACTOR PROBLEM";
577 mlt_service_lock(service.get_service());
578 Mlt::Producer trackProducer(tractor.track(0));
579 Mlt::Playlist trackPlaylist((mlt_playlist) trackProducer.get_service());
581 trackPlaylist.remove(0);
582 if (path.isEmpty()) {
583 mlt_service_unlock(service.get_service());
588 char *tmp = qstrdup(path.toUtf8().constData());
589 Mlt::Producer *clip = new Mlt::Producer (*m_mltProfile, "loader", tmp);
591 clip->set_in_and_out(0, 99999);
592 trackPlaylist.insert_at(0, clip, 1);
595 mlt_service serv = m_mltProducer->parent().get_service();
596 mlt_service nextservice = mlt_service_get_producer(serv);
597 mlt_properties properties = MLT_SERVICE_PROPERTIES(nextservice);
598 QString mlt_type = mlt_properties_get(properties, "mlt_type");
599 if (mlt_type != "transition") {
600 // transition does not exist, add it
601 Mlt::Field *field = tractor.field();
602 Mlt::Transition *transition = new Mlt::Transition(*m_mltProfile, "composite");
603 transition->set_in_and_out(0, 0);
604 transition->set("geometry", "0/0:100%x100%:70");
605 transition->set("fill", 1);
606 transition->set("operator", "and");
607 transition->set("a_track", 0);
608 transition->set("b_track", 1);
609 field->plant_transition(*transition, 0, 1);
611 mlt_service_unlock(service.get_service());
615 void MltDeviceCapture::setOverlayEffect(const QString &tag, QStringList parameters)
617 if (m_mltProducer == NULL || !m_mltProducer->is_valid()) return;
618 Mlt::Service service(m_mltProducer->parent().get_service());
619 Mlt::Tractor tractor(service);
620 Mlt::Producer trackProducer(tractor.track(0));
621 Mlt::Playlist trackPlaylist((mlt_playlist) trackProducer.get_service());
622 Mlt::Service trackService(trackProducer.get_service());
624 mlt_service_lock(service.get_service());
626 // delete previous effects
628 filter = trackService.filter(0);
629 if (filter && !tag.isEmpty()) {
630 QString currentService = filter->get("mlt_service");
631 if (currentService == tag) {
632 // Effect is already there
633 mlt_service_unlock(service.get_service());
638 trackService.detach(*filter);
640 filter = trackService.filter(0);
644 mlt_service_unlock(service.get_service());
648 char *tmp = qstrdup(tag.toUtf8().constData());
649 filter = new Mlt::Filter(*m_mltProfile, tmp);
651 if (filter && filter->is_valid()) {
652 for (int j = 0; j < parameters.count(); j++) {
653 filter->set(parameters.at(j).section('=', 0, 0).toUtf8().constData(), parameters.at(j).section('=', 1, 1).toUtf8().constData());
655 trackService.attach(*filter);
657 mlt_service_unlock(service.get_service());
660 void MltDeviceCapture::mirror(bool activate)
662 if (m_mltProducer == NULL || !m_mltProducer->is_valid()) return;
663 Mlt::Service service(m_mltProducer->parent().get_service());
664 Mlt::Tractor tractor(service);
665 Mlt::Producer trackProducer(tractor.track(1));
666 Mlt::Playlist trackPlaylist((mlt_playlist) trackProducer.get_service());
667 Mlt::Service trackService(trackProducer.get_service());
669 mlt_service_lock(service.get_service());
671 // delete previous effects
673 filter = trackService.filter(0);
675 trackService.detach(*filter);
677 filter = trackService.filter(0);
681 mlt_service_unlock(service.get_service());
685 filter = new Mlt::Filter(*m_mltProfile, "mirror");
686 if (filter && filter->is_valid()) {
687 filter->set("mirror", "flip");
688 trackService.attach(*filter);
690 mlt_service_unlock(service.get_service());
693 void MltDeviceCapture::uyvy2rgb(unsigned char *yuv_buffer, int width, int height)
695 processingImage = true;
696 QImage image(width, height, QImage::Format_RGB888);
697 unsigned char *rgb_buffer = image.bits();
702 int rgb_ptr, y_ptr, t;
704 len = width * height / 2;
709 for (t = 0; t < len; t++) {
712 Y = yuv_buffer[y_ptr];
713 U = yuv_buffer[y_ptr+1];
714 Y2 = yuv_buffer[y_ptr+2];
715 V = yuv_buffer[y_ptr+3];
718 r = ((298 * (Y - 16) + 409 * (V - 128) + 128) >> 8);
720 g = ((298 * (Y - 16) - 100 * (U - 128) - 208 * (V - 128) + 128) >> 8);
722 b = ((298 * (Y - 16) + 516 * (U - 128) + 128) >> 8);
724 if (r > 255) r = 255;
725 if (g > 255) g = 255;
726 if (b > 255) b = 255;
732 rgb_buffer[rgb_ptr] = r;
733 rgb_buffer[rgb_ptr+1] = g;
734 rgb_buffer[rgb_ptr+2] = b;
738 r = ((298 * (Y2 - 16) + 409 * (V - 128) + 128) >> 8);
740 g = ((298 * (Y2 - 16) - 100 * (U - 128) - 208 * (V - 128) + 128) >> 8);
742 b = ((298 * (Y2 - 16) + 516 * (U - 128) + 128) >> 8);
744 if (r > 255) r = 255;
745 if (g > 255) g = 255;
746 if (b > 255) b = 255;
752 rgb_buffer[rgb_ptr] = r;
753 rgb_buffer[rgb_ptr+1] = g;
754 rgb_buffer[rgb_ptr+2] = b;
757 //emit imageReady(image);
758 //m_captureDisplayWidget->setImage(image);
759 emit unblockPreview();
760 //processingImage = false;
763 void MltDeviceCapture::slotPreparePreview()
765 QTimer::singleShot(1000, this, SLOT(slotAllowPreview()));
768 void MltDeviceCapture::slotAllowPreview()
770 processingImage = false;