Don't crash when wrong sdl driver was selected by user (needs MLT patch):

[kdenlive] / src / monitormanager.cpp

diff --git a/src/monitormanager.cpp b/src/monitormanager.cpp
index c620ece28ced9d1f7ac9bb58d56903cb24e7f870..b52c4dbd6106a40cacbb7d5cffa5819a48eb5dbf 100644 (file)
--- a/src/monitormanager.cpp
+++ b/src/monitormanager.cpp
@@ -27,20 +27,30 @@
 #include <QTimer>
 
 
-MonitorManager::MonitorManager(QWidget *parent)
-        : QObject(parent) {
+MonitorManager::MonitorManager(QWidget *parent) :
+        QObject(parent),
+        m_clipMonitor(NULL),
+        m_projectMonitor(NULL),
+        m_blocked(false)
+{
 }
 
-Timecode MonitorManager::timecode() {
+Timecode MonitorManager::timecode()
+{
     return m_timecode;
 }
 
-void MonitorManager::initMonitors(Monitor *clipMonitor, Monitor *projectMonitor) {
+void MonitorManager::initMonitors(Monitor *clipMonitor, Monitor *projectMonitor)
+{
     m_clipMonitor = clipMonitor;
     m_projectMonitor = projectMonitor;
+    connect(m_clipMonitor, SIGNAL(blockMonitors()), this, SLOT(slotBlockMonitors()));
+    connect(m_projectMonitor, SIGNAL(blockMonitors()), this, SLOT(slotBlockMonitors()));
 }
 
-void MonitorManager::activateMonitor(QString name) {
+void MonitorManager::activateMonitor(QString name)
+{
+    if (m_blocked) return;
     if (m_activeMonitor == name) return;
     if (name == "clip") {
         m_projectMonitor->stop();
@@ -55,7 +65,9 @@ void MonitorManager::activateMonitor(QString name) {
     m_activeMonitor = name;
 }
 
-void MonitorManager::switchMonitors() {
+void MonitorManager::switchMonitors()
+{
+    if (m_blocked) return;
     if (m_clipMonitor->isActive()) {
         m_clipMonitor->stop();
         m_projectMonitor->start();
@@ -70,72 +82,90 @@ void MonitorManager::switchMonitors() {
     }
 }
 
-void MonitorManager::stopActiveMonitor() {
+void MonitorManager::stopActiveMonitor()
+{
+    if (m_blocked) return;
     if (m_clipMonitor->isActive()) m_clipMonitor->pause();
     else m_projectMonitor->pause();
 }
 
-void MonitorManager::slotPlay() {
+void MonitorManager::slotPlay()
+{
     if (m_clipMonitor->isActive()) m_clipMonitor->slotPlay();
     else m_projectMonitor->slotPlay();
 }
 
-void MonitorManager::slotPlayZone() {
+void MonitorManager::slotPlayZone()
+{
     if (m_clipMonitor->isActive()) m_clipMonitor->slotPlayZone();
     else m_projectMonitor->slotPlayZone();
 }
 
-void MonitorManager::slotLoopZone() {
+void MonitorManager::slotLoopZone()
+{
     if (m_clipMonitor->isActive()) m_clipMonitor->slotLoopZone();
     else m_projectMonitor->slotLoopZone();
 }
 
-void MonitorManager::slotRewind(double speed) {
+void MonitorManager::slotRewind(double speed)
+{
     if (m_clipMonitor->isActive()) m_clipMonitor->slotRewind(speed);
     else m_projectMonitor->slotRewind(speed);
 }
 
-void MonitorManager::slotForward(double speed) {
+void MonitorManager::slotForward(double speed)
+{
     if (m_clipMonitor->isActive()) m_clipMonitor->slotForward(speed);
     else m_projectMonitor->slotForward(speed);
 }
 
-void MonitorManager::slotRewindOneFrame() {
+void MonitorManager::slotRewindOneFrame()
+{
     if (m_clipMonitor->isActive()) m_clipMonitor->slotRewindOneFrame();
     else m_projectMonitor->slotRewindOneFrame();
 }
 
-void MonitorManager::slotForwardOneFrame() {
+void MonitorManager::slotForwardOneFrame()
+{
     if (m_clipMonitor->isActive()) m_clipMonitor->slotForwardOneFrame();
     else m_projectMonitor->slotForwardOneFrame();
 }
 
-void MonitorManager::slotRewindOneSecond() {
+void MonitorManager::slotRewindOneSecond()
+{
     if (m_clipMonitor->isActive()) m_clipMonitor->slotRewindOneFrame(m_timecode.fps());
     else m_projectMonitor->slotRewindOneFrame(m_timecode.fps());
 }
 
-void MonitorManager::slotForwardOneSecond() {
+void MonitorManager::slotForwardOneSecond()
+{
     if (m_clipMonitor->isActive()) m_clipMonitor->slotForwardOneFrame(m_timecode.fps());
     else m_projectMonitor->slotForwardOneFrame(m_timecode.fps());
 }
 
-void MonitorManager::slotStart() {
+void MonitorManager::slotStart()
+{
     if (m_clipMonitor->isActive()) m_clipMonitor->slotStart();
     else m_projectMonitor->slotStart();
 }
 
-void MonitorManager::slotEnd() {
+void MonitorManager::slotEnd()
+{
     if (m_clipMonitor->isActive()) m_clipMonitor->slotEnd();
     else m_projectMonitor->slotEnd();
 }
 
-void MonitorManager::resetProfiles(Timecode tc) {
+void MonitorManager::resetProfiles(Timecode tc)
+{
+    if (m_blocked) return;
     m_timecode = tc;
     QTimer::singleShot(300, this, SLOT(slotResetProfiles()));
 }
 
-void MonitorManager::slotResetProfiles() {
+void MonitorManager::slotResetProfiles()
+{
+    if (m_blocked) return;
+    if (m_projectMonitor == NULL || m_clipMonitor == NULL) return;
     activateMonitor("clip");
     m_clipMonitor->resetProfile();
     activateMonitor("project");
@@ -143,4 +173,17 @@ void MonitorManager::slotResetProfiles() {
     //m_projectMonitor->refreshMonitor(true);
 }
 
+void MonitorManager::slotBlockMonitors()
+{
+    m_blocked = true;
+    if (m_clipMonitor) {
+        m_clipMonitor->blockSignals(true);
+        m_clipMonitor->setEnabled(false);
+    }
+    if (m_projectMonitor) {
+        m_projectMonitor->blockSignals(true);
+        m_projectMonitor->setEnabled(false);
+    }
+}
+
 #include "monitormanager.moc"