Merge pull request #377 from YosysHQ/mmicko/recording

Enable screenshot and recording feature

8 files changed, 122 insertions, 2 deletions

diff --git a/README.md b/README.md
index cf743732..378d50b7 100644
--- a/README.md
+++ b/README.md
@@ -161,6 +161,15 @@ Notes for developers
 - To automatically format all source code, run `make clangformat`.
 - See the wiki for additional documentation on the architecture API.
 
+Recording a movie
+-----------------
+
+- To save a movie recording of place-and-route click recording icon in toolbar and select empty directory
+  where recording files will be stored and select frames to skip.
+- Manualy start all PnR operations you wish
+- Click on recording icon again to stop recording
+- Go to directory containing files and exeecute `ffmpeg -f image2 -r 1 -i movie_%05d.png -c:v libx264 nextpnr.mp4`
+
 Testing
 -------
 
diff --git a/gui/base.qrc b/gui/base.qrc
index 63612bf4..0671fa9e 100644
--- a/gui/base.qrc
+++ b/gui/base.qrc
@@ -28,5 +28,7 @@
         <file>resources/wire.png</file>
         <file>resources/pip.png</file>
         <file>resources/group.png</file>
+        <file>resources/camera.png</file>
+        <file>resources/film.png</file>
     </qresource>
 </RCC>
diff --git a/gui/basewindow.cc b/gui/basewindow.cc
index c3dbc131..7f767c58 100644
--- a/gui/basewindow.cc
+++ b/gui/basewindow.cc
@@ -23,7 +23,9 @@
 #include <QFileDialog>

 #include <QGridLayout>

 #include <QIcon>

+#include <QImageWriter>

 #include <QInputDialog>

+#include <QMessageBox>

 #include <QSplitter>

 #include <fstream>

 #include "designwidget.h"

@@ -252,6 +254,18 @@ void BaseMainWindow::createMenusAndBars()
     actionDisplayGroups->setChecked(true);

     connect(actionDisplayGroups, &QAction::triggered, this, &BaseMainWindow::enableDisableDecals);

 

+    actionScreenshot = new QAction("Screenshot", this);

+    actionScreenshot->setIcon(QIcon(":/icons/resources/camera.png"));

+    actionScreenshot->setStatusTip("Taking a screenshot");

+    connect(actionScreenshot, &QAction::triggered, this, &BaseMainWindow::screenshot);

+

+    actionMovie = new QAction("Recording", this);

+    actionMovie->setIcon(QIcon(":/icons/resources/film.png"));

+    actionMovie->setStatusTip("Saving a movie");

+    actionMovie->setCheckable(true);

+    actionMovie->setChecked(false);

+    connect(actionMovie, &QAction::triggered, this, &BaseMainWindow::saveMovie);

+

     // set initial state

     fpgaView->enableDisableDecals(actionDisplayBel->isChecked(), actionDisplayWire->isChecked(),

                                   actionDisplayPip->isChecked(), actionDisplayGroups->isChecked());

@@ -317,6 +331,9 @@ void BaseMainWindow::createMenusAndBars()
     deviceViewToolBar->addAction(actionDisplayWire);

     deviceViewToolBar->addAction(actionDisplayPip);

     deviceViewToolBar->addAction(actionDisplayGroups);

+    deviceViewToolBar->addSeparator();

+    deviceViewToolBar->addAction(actionScreenshot);

+    deviceViewToolBar->addAction(actionMovie);

 

     // Add status bar with progress bar

     statusBar = new QStatusBar();

@@ -362,6 +379,43 @@ void BaseMainWindow::save_json()
     }

 }

 

+void BaseMainWindow::screenshot()

+{

+    QString fileName = QFileDialog::getSaveFileName(this, QString("Save screenshot"), QString(), QString("*.png"));

+    if (!fileName.isEmpty()) {

+        QImage image = fpgaView->grabFramebuffer();

+        if (!fileName.endsWith(".png"))

+            fileName += ".png";

+        QImageWriter imageWriter(fileName, "png");

+        if (imageWriter.write(image))

+            log("Saving screenshot successful.\n");

+        else

+            log("Saving screenshot failed.\n");

+    }

+}

+

+void BaseMainWindow::saveMovie()

+{

+    if (actionMovie->isChecked()) {

+        QString dir = QFileDialog::getExistingDirectory(this, tr("Select Movie Directory"), QDir::currentPath(),

+                                                        QFileDialog::ShowDirsOnly | QFileDialog::DontResolveSymlinks);

+        if (!dir.isEmpty()) {

+            bool ok;

+            int frames =

+                    QInputDialog::getInt(this, "Recording", tr("Frames to skip (1 frame = 50ms):"), 5, 0, 1000, 1, &ok);

+            if (ok) {

+                QMessageBox::StandardButton reply =

+                        QMessageBox::question(this, "Recording", "Skip identical frames ?",

+                                              QMessageBox::Yes | QMessageBox::No, QMessageBox::Yes);

+                fpgaView->movieStart(dir, frames, (reply == QMessageBox::Yes));

+            } else

+                actionMovie->setChecked(false);

+        } else

+            actionMovie->setChecked(false);

+    } else {

+        fpgaView->movieStop();

+    }

+}

 void BaseMainWindow::pack_finished(bool status)

 {

     disableActions();

diff --git a/gui/basewindow.h b/gui/basewindow.h
index 7562307e..fe9dfdf2 100644
--- a/gui/basewindow.h
+++ b/gui/basewindow.h
@@ -83,6 +83,9 @@ class BaseMainWindow : public QMainWindow
     void taskStarted();

     void taskPaused();

 

+    void screenshot();

+    void saveMovie();

+

   Q_SIGNALS:

     void contextChanged(Context *ctx);

     void updateTreeView();

@@ -128,6 +131,9 @@ class BaseMainWindow : public QMainWindow
     QAction *actionDisplayWire;

     QAction *actionDisplayPip;

     QAction *actionDisplayGroups;

+

+    QAction *actionScreenshot;

+    QAction *actionMovie;

 };

 

 NEXTPNR_NAMESPACE_END

diff --git a/gui/fpgaviewwidget.cc b/gui/fpgaviewwidget.cc
index 2e1bbf63..f1494452 100644
--- a/gui/fpgaviewwidget.cc
+++ b/gui/fpgaviewwidget.cc
@@ -22,6 +22,9 @@
 
 #include <QApplication>
 #include <QCoreApplication>
+#include <QDir>
+#include <QFileInfo>
+#include <QImageWriter>
 #include <QMouseEvent>
 #include <QWidget>
 
@@ -35,7 +38,7 @@
 NEXTPNR_NAMESPACE_BEGIN
 
 FPGAViewWidget::FPGAViewWidget(QWidget *parent)
-        : QOpenGLWidget(parent), ctx_(nullptr), paintTimer_(this), lineShader_(this), zoom_(10.0f),
+        : QOpenGLWidget(parent), movieSaving(false), ctx_(nullptr), paintTimer_(this), lineShader_(this), zoom_(10.0f),
           rendererArgs_(new FPGAViewWidget::RendererArgs), rendererData_(new FPGAViewWidget::RendererData)
 {
     colors_.background = QColor("#000000");
@@ -322,6 +325,26 @@ void FPGAViewWidget::paintGL()
     lineShader_.draw(GraphicElement::STYLE_SELECTED, colors_.selected, thick11Px, matrix);
     lineShader_.draw(GraphicElement::STYLE_HOVER, colors_.hovered, thick2Px, matrix);
 
+    if (movieSaving) {
+        if (movieCounter == currentFrameSkip) {
+            QMutexLocker lock(&rendererArgsLock_);
+            movieCounter = 0;
+            QImage image = grabFramebuffer();
+            if (!movieSkipSame || movieLastImage != image) {
+                currentMovieFrame++;
+
+                QString number = QString("movie_%1.png").arg(currentMovieFrame, 5, 10, QChar('0'));
+
+                QFileInfo fileName = QFileInfo(QDir(movieDir), number);
+                QImageWriter imageWriter(fileName.absoluteFilePath(), "png");
+                imageWriter.write(image);
+                movieLastImage = image;
+            }
+        } else {
+            movieCounter++;
+        }
+    }
+
     // Render ImGui
     QtImGui::newFrame();
     QMutexLocker lock(&rendererArgsLock_);
@@ -579,6 +602,24 @@ void FPGAViewWidget::renderLines(void)
     }
 }
 
+void FPGAViewWidget::movieStart(QString dir, long frameSkip, bool skipSame)
+{
+    QMutexLocker locker(&rendererArgsLock_);
+    movieLastImage = QImage();
+    movieSkipSame = skipSame;
+    movieDir = dir;
+    currentMovieFrame = 0;
+    movieCounter = 0;
+    currentFrameSkip = frameSkip;
+    movieSaving = true;
+}
+
+void FPGAViewWidget::movieStop()
+{
+    QMutexLocker locker(&rendererArgsLock_);
+    movieSaving = false;
+}
+
 void FPGAViewWidget::onSelectedArchItem(std::vector<DecalXY> decals, bool keep)
 {
     {
diff --git a/gui/fpgaviewwidget.h b/gui/fpgaviewwidget.h
index 735590ba..9f670cb0 100644
--- a/gui/fpgaviewwidget.h
+++ b/gui/fpgaviewwidget.h
@@ -120,13 +120,21 @@ class FPGAViewWidget : public QOpenGLWidget, protected QOpenGLFunctions
     void zoomSelected();
     void zoomOutbound();
     void enableDisableDecals(bool bels, bool wires, bool pips, bool groups);
-
+    void movieStart(QString dir, long frameSkip, bool skipSame);
+    void movieStop();
   Q_SIGNALS:
     void clickedBel(BelId bel, bool add);
     void clickedWire(WireId wire, bool add);
     void clickedPip(PipId pip, bool add);
 
   private:
+    QString movieDir;
+    long currentMovieFrame;
+    long currentFrameSkip;
+    long movieCounter;
+    bool movieSaving;
+    bool movieSkipSame;
+    QImage movieLastImage;
     const float zoomNear_ = 0.05f; // do not zoom closer than this
     float zoomFar_ = 10.0f;        // do not zoom further than this
     const float zoomLvl1_ = 1.0f;
diff --git a/gui/resources/camera.png b/gui/resources/camera.png
new file mode 100644
index 00000000..8536d1a7
--- /dev/null
+++ b/gui/resources/camera.png
diff --git a/gui/resources/film.png b/gui/resources/film.png
new file mode 100644
index 00000000..b0ce7bb1
--- /dev/null
+++ b/gui/resources/film.png