From e44eb3032532a0b849fee4a11bbdc8e0f3c01709 Mon Sep 17 00:00:00 2001
From: Jean-Baptiste Mardelle <jb@kdenlive.org>
Date: Mon, 2 Mar 2009 22:23:52 +0000
Subject: [PATCH] Enable 2 pass encoding for rendering. All you need to do is
 add "pass=2" to the rendering arguments

svn path=/branches/KDE4/; revision=3082
---
 renderer/kdenlive_render.cpp | 15 ++++++++++++++-
 renderer/renderjob.cpp       | 17 +++++++++++++----
 renderer/renderjob.h         |  7 +++++++
 3 files changed, 34 insertions(+), 5 deletions(-)

diff --git a/renderer/kdenlive_render.cpp b/renderer/kdenlive_render.cpp
index 66d25174..807deb88 100644
--- a/renderer/kdenlive_render.cpp
+++ b/renderer/kdenlive_render.cpp
@@ -68,9 +68,22 @@ int main(int argc, char **argv) {
         args.takeFirst();
         QString dest = args.at(0);
         args.takeFirst();
+        bool dualpass = false;
+        bool doerase;
+        if (args.contains("pass=2")) {
+            // dual pass encoding
+            dualpass = true;
+            doerase = false;
+            args.replace(args.indexOf("pass=2"), "pass=1");
+        } else doerase = erase;
         qDebug() << "//STARTING RENDERING: " << erase << "," << usekuiserver << "," << render << "," << profile << "," << rendermodule << "," << player << "," << src << "," << dest << "," << preargs << "," << args << "," << in << "," << out ;
-        RenderJob *job = new RenderJob(erase, usekuiserver, render, profile, rendermodule, player, src, dest, preargs, args, in, out);
+        RenderJob *job = new RenderJob(doerase, usekuiserver, render, profile, rendermodule, player, src, dest, preargs, args, in, out);
         job->start();
+        if (dualpass) {
+            args.replace(args.indexOf("pass=1"), "pass=2");
+            RenderJob *dualjob = new RenderJob(erase, usekuiserver, render, profile, rendermodule, player, src, dest, preargs, args, in, out);
+            QObject::connect(job, SIGNAL(renderingFinished()), dualjob, SLOT(start()));
+        }
         app.exec();
     } else {
         fprintf(stderr, "Kdenlive video renderer for MLT.\nUsage: "
diff --git a/renderer/renderjob.cpp b/renderer/renderjob.cpp
index ba1804c1..f9a992da 100644
--- a/renderer/renderjob.cpp
+++ b/renderer/renderjob.cpp
@@ -44,6 +44,7 @@ RenderJob::RenderJob(bool erase, bool usekuiserver, const QString &renderer, con
     m_args << scenelist;
     if (in != -1) m_args << "in=" + QString::number(in);
     if (out != -1) m_args << "out=" + QString::number(out);
+
     m_args << preargs;
     //qDebug()<<"PRE ARGS: "<<preargs;
     if (scenelist.startsWith("consumer:")) {
@@ -51,6 +52,10 @@ RenderJob::RenderJob(bool erase, bool usekuiserver, const QString &renderer, con
         m_args << "profile=" + profile;
     } else m_args << "-profile" << profile;
     m_args << "-consumer" << rendermodule + ":" + m_dest << "progress=1" << args;
+
+    m_dualpass = false;
+    if (args.contains("pass=1")) m_dualpass = true;
+
     connect(m_renderProcess, SIGNAL(finished(int, QProcess::ExitStatus)), this, SLOT(slotIsOver(int, QProcess::ExitStatus)));
     m_renderProcess->setReadChannel(QProcess::StandardError);
 
@@ -239,14 +244,15 @@ void RenderJob::slotIsOver(int exitcode, QProcess::ExitStatus status) {
         // m_logstream << "Rendering of " << m_dest << " aborted, resulting video will probably be corrupted." << endl;
         qDebug() << "Rendering of " << m_dest << " aborted, resulting video will probably be corrupted.";
         QProcess::startDetached("kdialog", args);
+        qApp->quit();
     } else {
-        if (m_kdenliveinterface) {
+        if (!m_dualpass && m_kdenliveinterface) {
             m_dbusargs[1] = (int) - 1;
             m_dbusargs.append(QString());
             m_kdenliveinterface->callWithArgumentList(QDBus::NoBlock, "setRenderingFinished", m_dbusargs);
         }
         QDBusConnectionInterface* interface = QDBusConnection::sessionBus().interface();
-        if (interface && interface->isServiceRegistered("org.kde.knotify")) {
+        if (!m_dualpass && interface && interface->isServiceRegistered("org.kde.knotify")) {
             QDBusMessage m = QDBusMessage::createMethodCall("org.kde.knotify",
                              "/Notify",
                              "org.kde.KNotify",
@@ -268,14 +274,17 @@ void RenderJob::slotIsOver(int exitcode, QProcess::ExitStatus status) {
         }
         // m_logstream << "Rendering of " << m_dest << " finished" << endl;
         qDebug() << "Rendering of " << m_dest << " finished";
-        if (m_player != "-") {
+        if (!m_dualpass && m_player != "-") {
             // m_logstream << "Starting player" << endl;
             QStringList args;
             args << m_dest;
             QProcess::startDetached(m_player, args);
         }
+        if (m_dualpass) {
+            emit renderingFinished();
+            deleteLater();
+        } else qApp->quit();
     }
-    qApp->quit();
 }
 
 #include "renderjob.moc"
diff --git a/renderer/renderjob.h b/renderer/renderjob.h
index 64dd26e2..549a086e 100644
--- a/renderer/renderjob.h
+++ b/renderer/renderjob.h
@@ -31,9 +31,12 @@
 
 class RenderJob : public QObject {
     Q_OBJECT
+
 public:
     RenderJob(bool erase, bool usekuiserver, const QString &renderer, const QString &profile, const QString &rendermodule, const QString &player, const QString &scenelist, const QString &dest, const QStringList &preargs, const QStringList &args, int in = -1, int out = -1);
     ~RenderJob();
+
+public slots:
     void start();
 
 private slots:
@@ -52,6 +55,7 @@ private:
     QString m_player;
     QStringList m_args;
     bool m_erase;
+    bool m_dualpass;
     QDBusInterface *m_jobUiserver;
     QDBusInterface *m_kdenliveinterface;
     QList<QVariant> m_dbusargs;
@@ -62,6 +66,9 @@ private:
     QTemporaryFile m_logfile;
     /** \brief Used to write to the log file */
     QTextStream m_logstream;
+
+signals:
+    void renderingFinished();
 };
 
 #endif
-- 
2.39.2