Initial commit

Lts/Plugins/BuildingViewer/Common/BgViewer/viewerCtrl/windowcapturecallback.h

@@ -0,0 +1,91 @@
+/* -*-c++-*- OpenSceneGraph - Copyright (C) 1998-2006 Robert Osfield
+ *
+ * This application is open source and may be redistributed and/or modified
+ * freely and without restriction, both in commericial and non commericial applications,
+ * as long as this copyright notice is maintained.
+ *
+ * This application is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+*/
+/*   -*-c++-*-
+ *
+ * Copyright (C) 2009 Cedric Pinson
+ *
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301, USA.
+ *
+ * Authors:
+ *  Cedric Pinson <cedric.pinson@plopbyte.net>
+ *
+ */
+
+#pragma once
+
+#include <osg/Camera>
+
+// fwd decl for gstreamer objects
+struct _GstElement;
+
+namespace VCtrl
+{
+
+class WindowCaptureCallback : public osg::Camera::DrawCallback
+{
+public:
+  struct ContextData : public osg::Referenced
+  {
+    ContextData(osg::GraphicsContext *gc, GLenum readBuffer, const std::string &path, int w, int h, int framerate, int quality);
+    ~ContextData();
+
+    static void getSize(osg::GraphicsContext *gc, int &width, int &height);
+
+    void read();
+
+    osg::GraphicsContext   *_gc;
+    GLenum                  _readBuffer;
+    std::string             _fileName;
+
+    int                     _width;
+    int                     _height;
+
+    std::vector< GLuint >   _pboBuffer;
+
+    osg::Timer_t            _previousFrameTick;
+    osg::Timer_t            _startTick;
+    _GstElement *_pipeline;
+    _GstElement *_app_source;
+  };
+
+  WindowCaptureCallback(GLenum readBuffer, unsigned int contextid, const std::string &path, int w, int h, int framerate, int quality);
+  ~WindowCaptureCallback() = default;
+
+  ContextData *createContextData(osg::GraphicsContext *gc) const;
+  ContextData *getContextData(osg::GraphicsContext *gc) const;
+  void operator()(osg::RenderInfo &renderInfo) const override;
+
+  using ContextDataMap = std::map<osg::GraphicsContext *, osg::ref_ptr<ContextData> >;
+
+  GLenum                      _readBuffer;
+  unsigned int                _contextId;
+  std::string                 _filename;
+  int                         _w;
+  int                         _h;
+  int                         _framerate;
+  int                         _quality;
+  mutable ContextDataMap      _contextDataMap;
+};
+
+}