X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;f=thumbnailer%2Fwestleypreview.cpp;h=7a4642a1afc9f20057534bddcbf38770d228164b;hb=a2fa61bb46ff31dff7a924f6faeab78c10483c4e;hp=aede9b6936c1103fec4e54a8b67eadd6148421ba;hpb=189ef7e1a7e40e299e1b78cacc64a1d00e36f525;p=kdenlive

diff --git a/thumbnailer/westleypreview.cpp b/thumbnailer/westleypreview.cpp
index aede9b69..7a4642a1 100644
--- a/thumbnailer/westleypreview.cpp
+++ b/thumbnailer/westleypreview.cpp
@@ -20,19 +20,17 @@
 
 #include "westleypreview.h"
 
-#include <qfile.h>
-#include <qimage.h>
-#include <QtCore/QVarLengthArray>
+#include <QFile>
+#include <QImage>
+#include <QVarLengthArray>
 
 #include <kstandarddirs.h>
 #include <krandomsequence.h>
-#include <qdatetime.h>
-#include <QProcess>
+#include <QDateTime>
 #include <kdebug.h>
 #include <ktempdir.h>
 #include <kurl.h>
-#include <qfileinfo.h>
-#include <KTemporaryFile>
+#include <QFileInfo>
 
 #include <unistd.h>
 
@@ -41,145 +39,122 @@
 
 //#include "config.h"
 extern "C" {
-    KDE_EXPORT ThumbCreator *new_creator() {
-        return new WestleyPreview;
-    }
+KDE_EXPORT ThumbCreator *new_creator() {
+    return new MltPreview;
+}
 }
 
-WestleyPreview::WestleyPreview()
-        : m_rand(0), m_inigoprocess(0) {
+MltPreview::MltPreview() :
+    QObject(),
+    ThumbCreator()
+{
+    Mlt::Factory::init();
 }
 
-WestleyPreview::~WestleyPreview() {
-    delete m_rand;
-    delete m_inigoprocess;
+MltPreview::~MltPreview()
+{
+    Mlt::Factory::close();
 }
 
-bool WestleyPreview::startAndWaitProcess(const QStringList &args) {
-    kDebug(DBG_AREA) << "westleypreview: starting process with args: " << args << endl;
-    m_inigoprocess->start(args.join(" "));
-    if (! m_inigoprocess->waitForStarted()) {
-        kDebug(DBG_AREA) << "westleypreview: PROCESS NOT STARTED!!! exiting\n";
+
+bool MltPreview::create(const QString &path, int width, int height, QImage &img)
+{
+    Mlt::Profile *profile = new Mlt::Profile("dv_pal");
+    Mlt::Producer *producer = new Mlt::Producer(*profile, path.toUtf8().data());
+
+
+    if (producer->is_blank()) {
+        delete producer;
+        delete profile;
         return false;
     }
-    if (! m_inigoprocess->waitForFinished()) {
-        kDebug(DBG_AREA) << "westleypreview: PROCESS DIDN'T FINISH!! exiting\n";
-        m_inigoprocess->close();
-        return false;
+    int frame = 75;
+    uint variance = 10;
+    int ct = 1;
+
+    //img = getFrame(producer, frame, width, height);
+
+    while (variance <= 40 && ct < 4) {
+        img = getFrame(producer, frame, width, height);
+        variance = imageVariance(img);
+        frame += 100 * ct;
+        ct++;
     }
-    kDebug() << "westleypreview: process started and ended correctly\n";
-    return true;
+
+    delete producer;
+    delete profile;
+    return (img.isNull() == false);
 }
 
-bool WestleyPreview::create(const QString &path, int width, int /*height*/, QImage &img) {
-    QFileInfo fi(path);
-    playerBin = KStandardDirs::findExe("inigo");
-    if (playerBin.isEmpty()) {
-        kDebug(DBG_AREA) << "westleypreview: inigo not found, exiting.\n";
-        return false;
+QImage MltPreview::getFrame(Mlt::Producer *producer, int framepos, int /*width*/, int height)
+{
+    QImage result;
+    if (producer == NULL) {
+        return result;
     }
 
-    fileinfo.seconds = 0;
-    fileinfo.fps = 0;
-
-    m_rand = new KRandomSequence(QDateTime::currentDateTime().toTime_t());
-    m_inigoprocess = new QProcess();
-    KUrl furl(path);
-    kDebug(DBG_AREA) << "videopreview: url=" << furl << "; local:" << furl.isLocalFile() << endl;
-    fileinfo.towidth = width;
-    fileinfo.toheight = width * 3 / 4;
-    QImage pix;
-//    if(furl.isLocalFile())
-//    {
-    QStringList args;
-    //TODO: modify inigo so that it can return some infos about a westley clip (duration, track number,fps,...)
-    // without actually playing the file
-    /*
-        args << playerBin << QString("\"" + path + "\"") << "-file-info";
-
-        kDebug(DBG_AREA) << "videopreview: starting process: --_" << " " << args.join(" ") << "_--\n";
-        if (! startAndWaitProcess(args) ) return NULL;
-
-        QString information=QString(inigoprocess->readAllStandardOutput() );
-        QRegExp findInfos("ID_VIDEO_FPS=([\\d]*).*ID_LENGTH=([\\d]*).*");
-        if(findInfos.indexIn( information) == -1 )
-        {
-            kDebug(DBG_AREA) << "videopreview: No information found, exiting\n";
-            return NULL;
-        }
-        fileinfo.seconds =findInfos.cap(2).toInt();
-        fileinfo.fps=findInfos.cap(1).toInt();
-        */
-    fileinfo.seconds = 250;
-    fileinfo.fps = 25;
-
-    const int LASTTRY = 3;
-    for (int i = 0; i <= LASTTRY; i++) {
-        pix = getFrame(path);
-        if (!pix.isNull()) {
-            uint variance = imageVariance(pix);
-            kDebug(DBG_AREA) << "videopreview: " << QFileInfo(path).fileName() << " frame variance: " << variance << "; " <<
-            ((variance <= 40 && (i != LASTTRY - 1)) ? "!!!DROPPING!!!" : "GOOD :-)") << endl;
-            if (variance > 40 || i == LASTTRY - 1) break;
-        }
-    }
-    if (pix.isNull()) {
-        return false;
+    producer->seek(framepos);
+    Mlt::Frame *frame = producer->get_frame();
+    if (frame == NULL) {
+        return result;
     }
 
-    if (pix.depth() != 32)
-        img = pix.convertToFormat(QImage::Format_RGB32);
-    else img = pix;
-    return true;
-}
+    mlt_image_format format = mlt_image_rgb24a;
+    height = 200;
+    double ar = frame->get_double("aspect_ratio");
+    if (ar == 0.0) ar = 1.33;
+    int calculated_width = (int)((double) height * ar);
+    uint8_t *data = frame->get_image(format, calculated_width, height, 0);
+    QImage image((uchar *)data, calculated_width, height, QImage::Format_ARGB32);
 
-QImage WestleyPreview::getFrame(const QString &path) {
-    QStringList args;
-    const int START = 25;
-    const int RANGE = 500;
-    args.clear();
-    args << playerBin << "\"" + path + "\"";
-
-    unsigned long start = (unsigned long)(START + (m_rand->getDouble() * RANGE));
-    args << QString("in=%1").arg(start) << QString("out=%1").arg(start) << "-consumer";
-
-    KTemporaryFile temp;
-    temp.setSuffix(".png");
-    temp.open();
-    args << QString("avformat:%1").arg(temp.fileName()) << "vframes=1" << "f=rawvideo" << "vcodec=png" << QString("s=%1x%2").arg(fileinfo.towidth).arg(fileinfo.toheight);
-    if (! startAndWaitProcess(args)) return QImage();
-    QImage retpix(temp.fileName());
-    temp.close();
-    return retpix;
+    if (!image.isNull()) {
+        result = image.rgbSwapped().convertToFormat(QImage::Format_RGB32);
+    }
+
+    delete frame;
+    return result;
 }
 
 
-uint WestleyPreview::imageVariance(QImage image) {
+uint MltPreview::imageVariance(const QImage &image)
+{
+    if (image.isNull()) return 0;
     uint delta = 0;
     uint avg = 0;
     uint bytes = image.numBytes();
+    if (bytes == 0) return 0;
     uint STEPS = bytes / 2;
     QVarLengthArray<uchar> pivot(STEPS);
     kDebug(DBG_AREA) << "Using " << STEPS << " steps\n";
-    uchar *bits = image.bits();
+    const 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];
+    for( uint i=0; i<STEPS ; i++ ){
+        pivot[i] = bits[2 * i];
+#if QT_VERSION >= 0x040700
+        avg+=pivot.at(i);
+#else
+        avg+=pivot[i];
+#endif
     }
-    avg = avg / STEPS;
+    avg=avg/STEPS;
     // Second Step: calculate delta (average?)
-    for (uint i = 0; i < STEPS; i++) {
-        int curdelta = abs(int(avg - pivot[i]));
-        delta += curdelta;
+    for (uint i=0; i<STEPS; i++)
+    {
+#if QT_VERSION >= 0x040700
+        int curdelta=abs(int(avg - pivot.at(i)));
+#else
+        int curdelta=abs(int(avg - pivot[i]));
+#endif
+        delta+=curdelta;
     }
     return delta / STEPS;
 }
 
-ThumbCreator::Flags WestleyPreview::flags() const {
+ThumbCreator::Flags MltPreview::flags() const
+{
     return None;
 }
 
 
-#include "westleypreview.moc"
 
+#include "westleypreview.moc"