X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;f=src%2Fkthumb.cpp;h=809036689a300f4a5de2aef03ab4af4c2dff2950;hb=a3e1f9d24f3e4b4337b483aaa0b710308cadc152;hp=2c0938d2556f8ffcc3096474a129ca81ab454c41;hpb=f66e14aa6a646790dc613e884a602a1a72acf8a2;p=kdenlive

diff --git a/src/kthumb.cpp b/src/kthumb.cpp
index 2c0938d2..80903668 100644
--- a/src/kthumb.cpp
+++ b/src/kthumb.cpp
@@ -4,7 +4,7 @@
   begin                : Fri Nov 22 2002
   copyright            : (C) 2002 by Jason Wood
   email                : jasonwood@blueyonder.co.uk
-  copyright            : (C) 2005 Lcio Fl�io Corr�	
+  copyright            : (C) 2005 Lcio Fl�io Corr�
   email                : lucio.correa@gmail.com
   copyright            : (C) Marco Gittler
   email                : g.marco@freenet.de
@@ -20,232 +20,216 @@
  *                                                                         *
  ***************************************************************************/
 
-#include <qapplication.h>
+#include "kthumb.h"
+#include "clipmanager.h"
+#include "renderer.h"
+#include "kdenlivesettings.h"
+
+#include <mlt++/Mlt.h>
 
 #include <kio/netaccess.h>
 #include <kdebug.h>
 #include <klocale.h>
-#include <kdenlivesettings.h>
 #include <kfileitem.h>
 #include <kmessagebox.h>
-
-#include <mlt++/Mlt.h>
+#include <KStandardDirs>
 
 #include <qxml.h>
-#include <qimage.h>
-
-#include <QThread>
+#include <QImage>
 #include <QApplication>
-#include <QCryptographicHash>
-
+#include <QtConcurrentRun>
+#include <QVarLengthArray>
+
+KThumb::KThumb(ClipManager *clipManager, KUrl url, const QString &id, const QString &hash, QObject * parent, const char */*name*/) :
+    QObject(parent),
+    m_audioThumbProducer(),
+    m_url(url),
+    m_thumbFile(),
+    m_dar(1),
+    m_producer(NULL),
+    m_clipManager(clipManager),
+    m_id(id),
+    m_stopAudioThumbs(false)
+{
+    m_thumbFile = clipManager->projectFolder() + "/thumbs/" + hash + ".thumb";
+}
 
-#include "renderer.h"
-#include "kthumb.h"
-#include "kdenlivesettings.h"
+KThumb::~KThumb()
+{
+    m_requestedThumbs.clear();
+    if (m_audioThumbProducer.isRunning()) {
+        m_stopAudioThumbs = true;
+        m_audioThumbProducer.waitForFinished();
+        slotAudioThumbOver();
+    }
+    m_future.waitForFinished();
+}
 
-void MyThread::init(KUrl url, QString target, double frame, double frameLength, int frequency, int channels, int arrayWidth)
-    {
-	stop_me = false;
-	m_isWorking = false;
-	f.setFileName(target);
-	m_url = url;
-	m_frame = frame;
-	m_frameLength = frameLength;
-	m_frequency = frequency;
-	m_channels = channels;
-	m_arrayWidth = arrayWidth;
+void KThumb::setProducer(Mlt::Producer *producer)
+{
+    m_requestedThumbs.clear();
+    m_future.waitForFinished();
+    m_producer = producer;
+    // FIXME: the profile() call leaks an object, but trying to free
+    // it leads to a double-free in Profile::~Profile()
+    m_dar = producer->profile()->dar();
+}
 
-    }
+void KThumb::clearProducer()
+{
+    m_producer = NULL;
+}
 
-    bool MyThread::isWorking()
-    {
-	return m_isWorking;
-    }
+bool KThumb::hasProducer() const
+{
+    return m_producer != NULL;
+}
 
-    void MyThread::run()
-    {
-		
-		 if (!f.open( QIODevice::WriteOnly )) {
-			kDebug()<<"++++++++  ERROR WRITING TO FILE: "<<f.fileName()<<endl;
-			kDebug()<<"++++++++  DISABLING AUDIO THUMBS"<<endl;
-			//TODO KdenliveSettings::setAudiothumbnails(false);
-			return;
-		}
-		m_isWorking = true;
-		Mlt::Profile prof((char*) KdenliveSettings::current_profile().data());
-		Mlt::Producer m_producer(prof, m_url.path().toAscii().data());
-		
-
-		/*TODO if (KdenliveSettings::normaliseaudiothumbs()) {*/
-    		    Mlt::Filter m_convert(prof,"volume");
-    		    m_convert.set("gain", "normalise");
-    		    m_producer.attach(m_convert);
-		//}
-
-		/*TODO if (qApp->mainWidget()) 
-		    QApplication::postEvent(qApp->mainWidget(), new ProgressEvent(-1, 10005));
-	*/
-		int last_val = 0;
-		int val = 0;
-		kDebug() << "for " << m_frame << " " << m_frameLength << " " << m_producer.is_valid();
-		for (int z=(int) m_frame;z<(int) (m_frame+m_frameLength) && m_producer.is_valid();z++){
-			if (stop_me) break;
-			val=(int)((z-m_frame)/(m_frame+m_frameLength)*100.0);
-			if (last_val!=val & val > 1){
-				//TODO QApplication::postEvent(qApp->mainWidget(), new ProgressEvent(val, 10005));
-				last_val=val;
-			}
-				m_producer.seek( z );
-				Mlt::Frame *mlt_frame = m_producer.get_frame();
-				if ( mlt_frame->is_valid() )
-				{
-					double m_framesPerSecond = mlt_producer_get_fps( m_producer.get_producer() ); //mlt_frame->get_double( "fps" );
-					int m_samples = mlt_sample_calculator( m_framesPerSecond, m_frequency, mlt_frame_get_position(mlt_frame->get_frame()) );
-					mlt_audio_format m_audioFormat = mlt_audio_pcm;
-				
-					int16_t* m_pcm = mlt_frame->get_audio(m_audioFormat, m_frequency, m_channels, m_samples ); 
-
-					for (int c=0;c< m_channels;c++){
-						QByteArray m_array;
-						m_array.resize(m_arrayWidth);
-						for (uint i = 0; i < m_array.size(); i++){
-							m_array[i] =  ( (*( m_pcm + c + i * m_samples / m_array.size() )) >> 9 ) +127/2 ;
-						}
-						f.write(m_array);
-						
-					}
-				} else{
-					f.write(QByteArray(m_arrayWidth,'\x00'));
-				}
-				if (mlt_frame)
-					delete mlt_frame;
-		}
-		f.close();
-		m_isWorking = false;
-		if (stop_me) {
-		    f.remove();
-		   //TODO  QApplication::postEvent(qApp->mainWidget(), new ProgressEvent(-1, 10005));
-		}
-		//TODO else QApplication::postEvent(qApp->mainWidget(), new ProgressEvent(0, 10005));
-    }
+void KThumb::updateThumbUrl(const QString &hash)
+{
+    m_thumbFile = m_clipManager->projectFolder() + "/thumbs/" + hash + ".thumb";
+}
 
+void KThumb::updateClipUrl(KUrl url, const QString &hash)
+{
+    m_url = url;
+    if (m_producer)
+        m_producer->set("resource", url.path().toUtf8().constData());
+    m_thumbFile = m_clipManager->projectFolder() + "/thumbs/" + hash + ".thumb";
+}
 
-#define _S(a)           (a)>255 ? 255 : (a)<0 ? 0 : (a)
-#define _R(y,u,v) (0x2568*(y)                          + 0x3343*(u)) /0x2000
-#define _G(y,u,v) (0x2568*(y) - 0x0c92*(v) - 0x1a1e*(u)) /0x2000
-#define _B(y,u,v) (0x2568*(y) + 0x40cf*(v))                                          /0x2000
+//static
+QPixmap KThumb::getImage(KUrl url, int width, int height)
+{
+    if (url.isEmpty()) return QPixmap();
+    return getImage(url, 0, width, height);
+}
 
-KThumb::KThumb(KUrl url, int width, int height, QObject * parent, const char *name):QObject(parent), m_url(url), m_width(width), m_height(height)
+void KThumb::extractImage(int frame, int frame2)
 {
-  kDebug()<<"+++++++++++  CREATING THMB PROD FOR: "<<url;
-  m_profile = new Mlt::Profile((char*) qstrdup(KdenliveSettings::current_profile().toUtf8()));
-  QCryptographicHash context(QCryptographicHash::Sha1);
-  context.addData((KFileItem(m_url,"text/plain", S_IFREG).timeString() + m_url.fileName()).toAscii().data());	
-  m_thumbFile = KdenliveSettings::currenttmpfolder() + context.result().toHex() + ".thumb";
-  kDebug() << "thumbfile=" << m_thumbFile;
+    if (!KdenliveSettings::videothumbnails() || m_producer == NULL) return;
+    if (frame != -1 && !m_requestedThumbs.contains(frame)) m_requestedThumbs.append(frame);
+    if (frame2 != -1 && !m_requestedThumbs.contains(frame2)) m_requestedThumbs.append(frame2);
+    if (!m_future.isRunning()) m_future = QtConcurrent::run(this, &KThumb::doGetThumbs);
 }
 
-KThumb::~KThumb()
+void KThumb::doGetThumbs()
 {
-    if (m_profile) delete m_profile;
-    if (thumbProducer.isRunning ()) thumbProducer.exit();
+    const int theight = KdenliveSettings::trackheight();
+    const int twidth = FRAME_SIZE;//(int)(theight * m_dar + 0.5);
+
+    while (!m_requestedThumbs.isEmpty()) {
+        int frame = m_requestedThumbs.takeFirst();
+        if (frame != -1) {
+            QImage img = getFrame(m_producer, frame, twidth, theight);
+            emit thumbReady(frame, img);
+        }
+    }
 }
 
+QPixmap KThumb::extractImage(int frame, int width, int height)
+{
+    return QPixmap::fromImage(getFrame(m_producer, frame, width, height));
+}
 
 //static
-QPixmap KThumb::getImage(KUrl url, int width, int height)
+QPixmap KThumb::getImage(KUrl url, int frame, int width, int height)
 {
-    if (url.isEmpty()) return QPixmap();
+    Mlt::Profile profile(KdenliveSettings::current_profile().toUtf8().constData());
     QPixmap pix(width, height);
-  kDebug()<<"+++++++++++  GET THMB IMG FOR: "<<url;
-    char *tmp = Render::decodedString(url.path());
-    Mlt::Profile prof((char*) KdenliveSettings::current_profile().data());
-    Mlt::Producer m_producer(prof, tmp);
-    delete tmp;
+    if (url.isEmpty()) return pix;
 
-    if (m_producer.is_blank()) {
-	pix.fill(Qt::black);
-	return pix;
-    }
-    Mlt::Frame * m_frame;
-    mlt_image_format format = mlt_image_rgb24a;
-    Mlt::Filter m_convert(prof, "avcolour_space");
-    m_convert.set("forced", mlt_image_rgb24a);
-    m_producer.attach(m_convert);
-    //m_producer.seek(frame);
-    m_frame = m_producer.get_frame();
-    if (m_frame && m_frame->is_valid()) {
-      uint8_t *thumb = m_frame->get_image(format, width, height);
-      QImage image(thumb, width, height, QImage::Format_ARGB32);
-      if (!image.isNull()) {
-	pix = pix.fromImage(image);
-      }
-      else pix.fill(Qt::black);
-    }
-    if (m_frame) delete m_frame;
+    //"<mlt><playlist><producer resource=\"" + url.path() + "\" /></playlist></mlt>");
+    //Mlt::Producer producer(profile, "xml-string", tmp);
+    Mlt::Producer *producer = new Mlt::Producer(profile, url.path().toUtf8().constData());
+
+    pix = QPixmap::fromImage(getFrame(producer, frame, width, height));
+    delete producer;
     return pix;
 }
 
-void KThumb::extractImage(int frame, int frame2)
+
+//static
+QImage KThumb::getFrame(Mlt::Producer *producer, int framepos, int width, int height)
 {
-    if (m_url.isEmpty()) return;
-    QPixmap pix(m_width, m_height);
-    char *tmp = Render::decodedString(m_url.path());
-    Mlt::Producer m_producer(*m_profile, tmp);
-    delete tmp;
+    QImage p(width, height, QImage::Format_ARGB32_Premultiplied);
+    if (producer == NULL) {
+        p.fill(Qt::red);
+        return p;
+    }
 
-    if (m_producer.is_blank()) {
-	pix.fill(Qt::black);
-	emit thumbReady(frame, pix);
-	return;
+    if (producer->is_blank()) {
+        p.fill(Qt::black);
+        return p;
+    }
+
+    producer->seek(framepos);
+    Mlt::Frame *frame = producer->get_frame();
+    if (!frame) {
+        kDebug() << "///// BROKEN FRAME";
+        p.fill(Qt::red);
+        return p;
     }
-    Mlt::Frame * m_frame;
+
+    /*Mlt::Producer parentProd(producer->parent());
+    Mlt::Service service(parentProd.get_service());
+    mlt_service_lock(service.get_service());*/
+    int ow = width;
+    int oh = height;
     mlt_image_format format = mlt_image_rgb24a;
-    Mlt::Filter m_convert(*m_profile, "avcolour_space");
-    m_convert.set("forced", mlt_image_rgb24a);
-    m_producer.attach(m_convert);
-    if (frame != -1) {
-      m_producer.seek(frame);
-      m_frame = m_producer.get_frame();
-      if (m_frame && m_frame->is_valid()) {
-	uint8_t *thumb = m_frame->get_image(format, m_width, m_height);
-	QImage image(thumb, m_width, m_height, QImage::Format_ARGB32);
-	if (!image.isNull()) {
-	  pix = pix.fromImage(image);
-	}
-	else pix.fill(Qt::black);
-      }
-      if (m_frame) delete m_frame;
-      emit thumbReady(frame, pix);
+    uint8_t *data = frame->get_image(format, ow, oh, 0);
+    QImage image((uchar *)data, ow, oh, QImage::Format_ARGB32_Premultiplied);
+    //mlt_service_unlock(service.get_service());
+
+    if (!image.isNull()) {
+        if (ow > (2 * width)) {
+            // there was a scaling problem, do it manually
+            QImage scaled = image.scaled(width, height);
+            p = scaled.rgbSwapped();
+        } else p = image.rgbSwapped();
+    } else
+        p.fill(Qt::red);
+
+    delete frame;
+    return p;
+}
+
+
+//static
+uint KThumb::imageVariance(QImage image )
+{
+    uint delta=0;
+    uint avg=0;
+    uint bytes=image.numBytes();
+    uint STEPS=bytes/2;
+    QVarLengthArray<uchar> pivot(STEPS);
+    uchar *bits=image.bits();
+    // First pass: get pivots and taking average
+    for( uint i=0; i<STEPS ; i++ ){
+        pivot[i]=bits[i*(bytes/STEPS)];
+        avg+=pivot[i];
     }
-    if (frame2 == -1) return;
-    m_producer.seek(frame2);
-    m_frame = m_producer.get_frame();
-    if (m_frame && m_frame->is_valid()) {
-      uint8_t *thumb = m_frame->get_image(format, m_width, m_height);
-      QImage image(thumb, m_width, m_height, QImage::Format_ARGB32);
-      if (!image.isNull()) {
-	pix = pix.fromImage(image);
-      }
-      else pix.fill(Qt::black);
+    avg=avg/STEPS;
+    // Second Step: calculate delta (average?)
+    for (uint i=0; i<STEPS; i++)
+    {
+        int curdelta=abs(int(avg-pivot[i]));
+        delta+=curdelta;
     }
-    if (m_frame) delete m_frame;
-    emit thumbReady(frame2, pix);
-
+    return delta/STEPS;
 }
+
 /*
 void KThumb::getImage(KUrl url, int frame, int width, int height)
 {
     if (url.isEmpty()) return;
     QPixmap image(width, height);
-    char *tmp = KRender::decodedString(url.path());
-    Mlt::Producer m_producer(tmp);
-    delete tmp;
+    Mlt::Producer m_producer(url.path().toUtf8().constData());
     image.fill(Qt::black);
 
     if (m_producer.is_blank()) {
-	emit thumbReady(frame, image);
-	return;
+ emit thumbReady(frame, image);
+ return;
     }
     Mlt::Filter m_convert("avcolour_space");
     m_convert.set("forced", mlt_image_rgb24a);
@@ -256,9 +240,9 @@ void KThumb::getImage(KUrl url, int frame, int width, int height)
     width = width - 2;
     height = height - 2;
     if (m_frame && m_frame->is_valid()) {
-    	uint8_t *thumb = m_frame->get_image(format, width, height);
-    	QImage tmpimage(thumb, width, height, 32, NULL, 0, QImage::IgnoreEndian);
-    	if (!tmpimage.isNull()) bitBlt(&image, 1, 1, &tmpimage, 0, 0, width + 2, height + 2);
+     uint8_t *thumb = m_frame->get_image(format, width, height);
+     QImage tmpimage(thumb, width, height, 32, NULL, 0, QImage::IgnoreEndian);
+     if (!tmpimage.isNull()) bitBlt(&image, 1, 1, &tmpimage, 0, 0, width + 2, height + 2);
     }
     if (m_frame) delete m_frame;
     emit thumbReady(frame, image);
@@ -268,15 +252,13 @@ void KThumb::getThumbs(KUrl url, int startframe, int endframe, int width, int he
 {
     if (url.isEmpty()) return;
     QPixmap image(width, height);
-    char *tmp = KRender::decodedString(url.path());
-    Mlt::Producer m_producer(tmp);
-    delete tmp;
+    Mlt::Producer m_producer(url.path().toUtf8().constData());
     image.fill(Qt::black);
 
     if (m_producer.is_blank()) {
-	emit thumbReady(startframe, image);
-	emit thumbReady(endframe, image);
-	return;
+ emit thumbReady(startframe, image);
+ emit thumbReady(endframe, image);
+ return;
     }
     Mlt::Filter m_convert("avcolour_space");
     m_convert.set("forced", mlt_image_rgb24a);
@@ -288,9 +270,9 @@ void KThumb::getThumbs(KUrl url, int startframe, int endframe, int width, int he
     height = height - 2;
 
     if (m_frame && m_frame->is_valid()) {
-    	uint8_t *thumb = m_frame->get_image(format, width, height);
-    	QImage tmpimage(thumb, width, height, 32, NULL, 0, QImage::IgnoreEndian);
-    	if (!tmpimage.isNull()) bitBlt(&image, 1, 1, &tmpimage, 0, 0, width - 2, height - 2);
+     uint8_t *thumb = m_frame->get_image(format, width, height);
+     QImage tmpimage(thumb, width, height, 32, NULL, 0, QImage::IgnoreEndian);
+     if (!tmpimage.isNull()) bitBlt(&image, 1, 1, &tmpimage, 0, 0, width - 2, height - 2);
     }
     if (m_frame) delete m_frame;
     emit thumbReady(startframe, image);
@@ -300,9 +282,9 @@ void KThumb::getThumbs(KUrl url, int startframe, int endframe, int width, int he
     m_frame = m_producer.get_frame();
 
     if (m_frame && m_frame->is_valid()) {
-    	uint8_t *thumb = m_frame->get_image(format, width, height);
-    	QImage tmpimage(thumb, width, height, 32, NULL, 0, QImage::IgnoreEndian);
-    	if (!tmpimage.isNull()) bitBlt(&image, 1, 1, &tmpimage, 0, 0, width - 2, height - 2);
+     uint8_t *thumb = m_frame->get_image(format, width, height);
+     QImage tmpimage(thumb, width, height, 32, NULL, 0, QImage::IgnoreEndian);
+     if (!tmpimage.isNull()) bitBlt(&image, 1, 1, &tmpimage, 0, 0, width - 2, height - 2);
     }
     if (m_frame) delete m_frame;
     emit thumbReady(endframe, image);
@@ -310,55 +292,150 @@ void KThumb::getThumbs(KUrl url, int startframe, int endframe, int width, int he
 */
 void KThumb::stopAudioThumbs()
 {
-	if (thumbProducer.isRunning ()) thumbProducer.stop_me = true;
+    if (m_audioThumbProducer.isRunning()) {
+        m_stopAudioThumbs = true;
+        m_audioThumbProducer.waitForFinished();
+        slotAudioThumbOver();
+    }
 }
 
-
 void KThumb::removeAudioThumb()
 {
-	if (m_thumbFile.isEmpty()) return;
-	stopAudioThumbs();
-	QFile f(m_thumbFile);
-	f.remove();
+    if (m_thumbFile.isEmpty()) return;
+    stopAudioThumbs();
+    QFile f(m_thumbFile);
+    f.remove();
 }
 
-void KThumb::getAudioThumbs(int channel, double frame, double frameLength, int arrayWidth){
-	
-	if ((thumbProducer.isRunning () && thumbProducer.isWorking()) || channel == 0) {
-	    return;
-	}
-	
-	QMap <int, QMap <int, QByteArray> > storeIn;
-       //FIXME: Hardcoded!!! 
-	int m_frequency = 48000;
-	int m_channels = channel;
-	
-	QFile f(m_thumbFile);
-	if (f.open( QIODevice::ReadOnly )) {
-		QByteArray channelarray = f.readAll();
-		f.close();
-		if (channelarray.size() != arrayWidth*(frame+frameLength)*m_channels) {
-			kDebug()<<"--- BROKEN THUMB FOR: "<<m_url.fileName()<<" ---------------------- "<<endl;
-			f.remove();
-			return;
-		}
-		kDebug() << "reading audio thumbs from file";
-		for (int z=(int) frame;z<(int) (frame+frameLength);z++) {
-			for (int c=0;c< m_channels;c++){
-				QByteArray m_array(arrayWidth,'\x00');
-				for (int i = 0; i < arrayWidth; i++)
-					m_array[i] = channelarray[z*arrayWidth*m_channels + c*arrayWidth + i];
-				storeIn[z][c] = m_array;
-			}
-		}
-		emit audioThumbReady(storeIn);
-	}
-	else {
-		if (thumbProducer.isRunning()) return;
-		thumbProducer.init(m_url, m_thumbFile, frame, frameLength, m_frequency, m_channels, arrayWidth);
-		thumbProducer.start(QThread::LowestPriority );
-	}
+void KThumb::getAudioThumbs(int channel, double frame, double frameLength, int arrayWidth)
+{
+    if (channel == 0) {
+        slotAudioThumbOver();
+        return;
+    }
+    if (m_audioThumbProducer.isRunning()) {
+        return;
+    }
+
+    QMap <int, QMap <int, QByteArray> > storeIn;
+    //FIXME: Hardcoded!!!
+    m_frequency = 48000;
+    m_channels = channel;
+
+    QFile f(m_thumbFile);
+    if (f.open(QIODevice::ReadOnly)) {
+        QByteArray channelarray = f.readAll();
+        f.close();
+        if (channelarray.size() != arrayWidth*(frame + frameLength)*m_channels) {
+            kDebug() << "--- BROKEN THUMB FOR: " << m_url.fileName() << " ---------------------- " << endl;
+            f.remove();
+            slotAudioThumbOver();
+            return;
+        }
+
+        kDebug() << "reading audio thumbs from file";
+
+        int h1 = arrayWidth * m_channels;
+        int h2 = (int) frame * h1;
+        int h3;
+        for (int z = (int) frame; z < (int)(frame + frameLength); z++) {
+            h2 += h1;
+            h3 = 0;
+            for (int c = 0; c < m_channels; c++) {
+                h3 += arrayWidth;
+                QByteArray m_array(arrayWidth, '\x00');
+                for (int i = 0; i < arrayWidth; i++)
+                    m_array[i] = channelarray[h2 + h3 + i];
+                storeIn[z][c] = m_array;
+            }
+        }
+        emit audioThumbReady(storeIn);
+        slotAudioThumbOver();
+    } else {
+        if (m_audioThumbProducer.isRunning()) return;
+        m_audioThumbFile.setFileName(m_thumbFile);
+        m_frame = frame;
+        m_frameLength = frameLength;
+        m_arrayWidth = arrayWidth;
+        m_audioThumbProducer = QtConcurrent::run(this, &KThumb::slotCreateAudioThumbs);
+        /*m_audioThumbProducer.init(m_url, m_thumbFile, frame, frameLength, m_frequency, m_channels, arrayWidth);
+        m_audioThumbProducer.start(QThread::LowestPriority);*/
+        // kDebug() << "STARTING GENERATE THMB FOR: " <<m_id<<", URL: "<< m_url << " ................................";
+    }
+}
+
+void KThumb::slotCreateAudioThumbs()
+{
+    Mlt::Profile prof((char*) KdenliveSettings::current_profile().toUtf8().data());
+    Mlt::Producer m_producer(prof, m_url.path().toUtf8().data());
+    if (!m_producer.is_valid()) {
+        kDebug() << "++++++++  INVALID CLIP: " << m_url.path();
+        return;
+    }
+    if (!m_audioThumbFile.open(QIODevice::WriteOnly)) {
+        kDebug() << "++++++++  ERROR WRITING TO FILE: " << m_audioThumbFile.fileName();
+        kDebug() << "++++++++  DISABLING AUDIO THUMBS";
+        KdenliveSettings::setAudiothumbnails(false);
+        return;
+    }
+
+    if (KdenliveSettings::normaliseaudiothumbs()) {
+        Mlt::Filter m_convert(prof, "volume");
+        m_convert.set("gain", "normalise");
+        m_producer.attach(m_convert);
+    }
+
+    int last_val = 0;
+    int val = 0;
+    //kDebug() << "for " << m_frame << " " << m_frameLength << " " << m_producer.is_valid();
+    for (int z = (int) m_frame; z < (int)(m_frame + m_frameLength) && m_producer.is_valid(); z++) {
+        if (m_stopAudioThumbs) break;
+        val = (int)((z - m_frame) / (m_frame + m_frameLength) * 100.0);
+        if (last_val != val && val > 1) {
+            m_clipManager->setThumbsProgress(i18n("Creating thumbnail for %1", m_url.fileName()), val);
+            last_val = val;
+        }
+        m_producer.seek(z);
+        Mlt::Frame *mlt_frame = m_producer.get_frame();
+        if (mlt_frame && mlt_frame->is_valid()) {
+            double m_framesPerSecond = mlt_producer_get_fps(m_producer.get_producer());
+            int m_samples = mlt_sample_calculator(m_framesPerSecond, m_frequency, mlt_frame_get_position(mlt_frame->get_frame()));
+            mlt_audio_format m_audioFormat = mlt_audio_pcm;
+            qint16* m_pcm = static_cast<qint16*>(mlt_frame->get_audio(m_audioFormat, m_frequency, m_channels, m_samples));
+
+            for (int c = 0; c < m_channels; c++) {
+                QByteArray m_array;
+                m_array.resize(m_arrayWidth);
+                for (int i = 0; i < m_array.size(); i++) {
+                    m_array[i] = ((*(m_pcm + c + i * m_samples / m_array.size())) >> 9) + 127 / 2 ;
+                }
+                m_audioThumbFile.write(m_array);
+
+            }
+        } else {
+            m_audioThumbFile.write(QByteArray(m_arrayWidth, '\x00'));
+        }
+        delete mlt_frame;
+    }
+    m_audioThumbFile.close();
+    if (m_stopAudioThumbs) {
+        m_audioThumbFile.remove();
+    } else {
+        slotAudioThumbOver();
+    }
+}
+
+void KThumb::slotAudioThumbOver()
+{
+    m_clipManager->setThumbsProgress(i18n("Creating thumbnail for %1", m_url.fileName()), -1);
+    m_clipManager->endAudioThumbsGeneration(m_id);
+}
+
+void KThumb::askForAudioThumbs(const QString &id)
+{
+    m_clipManager->askForAudioThumb(id);
 }
 
 
+#include "kthumb.moc"