Qt: Add getPixels call for a finished context

src/platform/qt/CoreController.cpp

@@ -210,6 +210,26 @@ const color_t* CoreController::drawContext() {
 	return reinterpret_cast<const color_t*>(m_completeBuffer.constData());
 }
 
+QImage CoreController::getPixels() {
+	QByteArray buffer;
+	QSize size = screenDimensions();
+	size_t stride = size.width() * BYTES_PER_PIXEL;
+
+	if (!m_hwaccel) {
+		buffer = m_completeBuffer;
+	} else {
+		Interrupter interrupter(this);
+		const void* pixels;
+		m_threadContext.core->getPixels(m_threadContext.core, &pixels, &stride);
+		stride *= BYTES_PER_PIXEL;
+		buffer.resize(stride * size.height());
+		memcpy(buffer.data(), pixels, buffer.size());
+	}
+
+	return QImage(reinterpret_cast<const uchar*>(buffer.constData()),
+	              size.width(), size.height(), stride, QImage::Format_RGBX8888);
+}
+
 bool CoreController::isPaused() {
 	return mCoreThreadIsPaused(&m_threadContext);
 }

src/platform/qt/CoreController.h

@@ -67,6 +67,7 @@ public:
 	mCoreThread* thread() { return &m_threadContext; }
 
 	const color_t* drawContext();
+	QImage getPixels();
 
 	bool isPaused();
 	bool hasStarted();

src/platform/qt/Window.cpp

@@ -1706,11 +1706,8 @@ void Window::focusCheck() {
 }
 
 void Window::updateFrame() {
-	QSize size = m_controller->screenDimensions();
-	QImage currentImage(reinterpret_cast<const uchar*>(m_controller->drawContext()), size.width(), size.height(),
-	                    size.width() * BYTES_PER_PIXEL, QImage::Format_RGBX8888);
 	QPixmap pixmap;
-	pixmap.convertFromImage(currentImage);
+	pixmap.convertFromImage(m_controller->getPixels());
 	m_screenWidget->setPixmap(pixmap);
 	emit paused(true);
 }