Add a transform that can be used to incrementally save frames to disk through the gallery interface

Charles Otto
1 parent c919513d
Showing 1 changed file with 66 additions and 0 deletions
openbr/plugins/misc.cpp
@@ -470,6 +470,72 @@ class RestoreMatTransform : public UntrainableMetaTransform
 BR_REGISTER(Transform, RestoreMatTransform)
+/*!
+ * \ingroup transforms
+ * \brief Incrementally output templates received to a gallery, based on the current filename
+ * When a template is received in projectUpdate for the first time since a finalize, open a new gallery based on the
+ * template's filename, and the galleryFormat property.
+ * Templates received in projectUpdate will be output to the gallery with a filename combining their original filename and
+ * their FrameNumber property, with the file extension specified by the fileFormat property.
+ * \author Charles Otto \cite caotto
+ */
+class IncrementalOutputTransform : public TimeVaryingTransform
+{
+    Q_OBJECT
+
+    Q_PROPERTY(QString galleryFormat READ get_galleryFormat WRITE set_galleryFormat RESET reset_galleryFormat STORED false)
+    Q_PROPERTY(QString fileFormat READ get_fileFormat WRITE set_fileFormat RESET reset_fileFormat STORED false)
+    BR_PROPERTY(QString, galleryFormat, "")
+    BR_PROPERTY(QString, fileFormat, ".png")
+
+    bool galleryUp;
+
+    void projectUpdate(const TemplateList &src, TemplateList &dst)
+    {
+        if (src.empty())
+            return;
+
+        if (!galleryUp) {
+            QFileInfo finfo(src[0].file.name);
+            QString galleryName = finfo.baseName() + galleryFormat;
+
+            writer = QSharedPointer<Gallery> (Factory<Gallery>::make(galleryName));
+            galleryUp = true;
+        }
+
+        dst = src;
+        foreach(const Template & t, src) {
+            if (t.empty())
+                continue;
+
+            // Build the output filename for this template
+            QFileInfo finfo(t.file.name);
+            QString outputName = finfo.baseName() +"_" + t.file.get<QString>("FrameNumber") + fileFormat;
+
+            Template out = t;
+            out.file.name = outputName;
+            writer->write(out);
+        }
+    }
+
+    void train(const TemplateList& data)
+    {
+        (void) data;
+    }
+
+    // Drop the current gallery.
+    void finalize(TemplateList & data)
+    {
+        galleryUp = false;
+    }
+
+    QSharedPointer<Gallery> writer;
+public:
+    IncrementalOutputTransform() : TimeVaryingTransform(false,false) {galleryUp = false;}
+};
+
+BR_REGISTER(Transform, IncrementalOutputTransform)
+
 class EventTransform : public UntrainableMetaTransform
 {
     Q_OBJECT