1 files changed, 124 insertions, 0 deletions
diff --git a/src/graphics/X11Display.cpp b/src/graphics/X11Display.cpp
new file mode 100644
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--- /dev/null
+++ b/src/graphics/X11Display.cpp
@@ -0,0 +1,124 @@
+//
+//  libavg - Media Playback Engine. 
+//  Copyright (C) 2003-2014 Ulrich von Zadow
+//
+//  This library is free software; you can redistribute it and/or
+//  modify it under the terms of the GNU Lesser General Public
+//  License as published by the Free Software Foundation; either
+//  version 2 of the License, or (at your option) any later version.
+//
+//  This library 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
+//  Lesser General Public License for more details.
+//
+//  You should have received a copy of the GNU Lesser General Public
+//  License along with this library; if not, write to the Free Software
+//  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+//
+//  Current versions can be found at www.libavg.de
+//
+
+#include "X11Display.h"
+
+#include "../base/Exception.h"
+#include "../base/Logger.h"
+
+#include <SDL/SDL.h>
+#include <SDL/SDL_syswm.h>
+
+#include <boost/math/special_functions/fpclassify.hpp>
+
+
+namespace avg {
+
+X11Display::X11Display()
+{
+}
+
+X11Display::~X11Display()
+{
+}
+ 
+float X11Display::queryPPMM()
+{
+    ::Display * pDisplay = XOpenDisplay(0);
+    float ppmm = getScreenResolution().x/float(DisplayWidthMM(pDisplay, 0));
+    XCloseDisplay(pDisplay);
+    return ppmm;
+}
+
+IntPoint X11Display::queryScreenResolution()
+{
+    IntPoint size;
+    // Xinerama query has been removed from here in order to fix #431
+    ::Display * pDisplay = XOpenDisplay(0);
+
+    Screen* pScreen = DefaultScreenOfDisplay(pDisplay);
+    AVG_ASSERT(pScreen);
+    size = IntPoint(pScreen->width, pScreen->height);
+
+    XCloseDisplay(pDisplay);
+    return size;
+}
+
+float X11Display::queryRefreshRate()
+{
+    ::Display * pDisplay = XOpenDisplay(0);
+    int pixelClock;
+    XF86VidModeModeLine modeLine;
+    bool bOK = XF86VidModeGetModeLine(pDisplay, DefaultScreen(pDisplay), 
+            &pixelClock, &modeLine);
+    if (!bOK) {
+        AVG_LOG_WARNING(
+                "Could not get current refresh rate (XF86VidModeGetModeLine failed).");
+        AVG_LOG_WARNING("Defaulting to 60 Hz refresh rate.");
+        return 60;
+    }
+    float hSyncRate = (pixelClock * 1000.0) / modeLine.htotal;
+    float refreshRate = hSyncRate / modeLine.vtotal;
+    XCloseDisplay(pDisplay);
+    if ( refreshRate < 20 || refreshRate > 200 || !(boost::math::isnormal(refreshRate))){
+        AVG_LOG_WARNING("Could not get valid refresh rate");
+        AVG_LOG_WARNING("Defaulting to 60 Hz refresh rate.");
+        return 60;
+    }
+    return refreshRate;
+}
+
+::Display* getX11Display(const SDL_SysWMinfo* pSDLWMInfo)
+{
+    ::Display* pDisplay;
+    if (pSDLWMInfo) {
+        // SDL window exists, use it.
+        pDisplay = pSDLWMInfo->info.x11.display;
+    } else {
+        pDisplay = XOpenDisplay(0);
+    }
+    if (!pDisplay) {
+        throw Exception(AVG_ERR_VIDEO_GENERAL, "No X windows display available.");
+    }
+    return pDisplay;
+}
+
+Window createChildWindow(const SDL_SysWMinfo* pSDLWMInfo, XVisualInfo* pVisualInfo,
+        const IntPoint& windowSize, Colormap& colormap)
+
+{
+    // Create a child window with the required attributes to render into.
+    XSetWindowAttributes swa;
+    ::Display* pDisplay = pSDLWMInfo->info.x11.display;
+    colormap = XCreateColormap(pDisplay, RootWindow(pDisplay, pVisualInfo->screen),
+            pVisualInfo->visual, AllocNone);
+    swa.colormap = colormap;
+    swa.background_pixmap = None;
+    swa.event_mask = StructureNotifyMask; 
+    Window win = XCreateWindow(pDisplay, pSDLWMInfo->info.x11.window, 
+            0, 0, windowSize.x, windowSize.y, 0, pVisualInfo->depth, InputOutput, 
+            pVisualInfo->visual, CWColormap|CWEventMask, &swa);
+    AVG_ASSERT(win);
+    XMapWindow(pDisplay, win);
+    return win;
+}
+
+}