oslbackend: began new backend classes

app/render/backend/osl/oslworker.cpp

@@ -0,0 +1,25 @@
+#include "oslworker.h"
+
+#include "common/clamp.h"
+#include "core.h"
+#include "node/block/transition/transition.h"
+#include "node/node.h"
+#include "render/colormanager.h"
+#include "render/pixelservice.h"
+
+OSLWorker::OSLWorker(VideoRenderFrameCache *frame_cache, QObject *parent) :
+  VideoRenderWorker(frame_cache, parent)
+{
+}
+
+void OSLWorker::FrameToValue(StreamPtr stream, FramePtr frame, NodeValueTable *table)
+{
+}
+
+void OSLWorker::RunNodeAccelerated(const Node *node, const TimeRange &range, const NodeValueDatabase &input_params, NodeValueTable *output_params)
+{
+}
+
+void OSLWorker::TextureToBuffer(const QVariant &tex_in, QByteArray &buffer)
+{
+}