1 files changed, 114 insertions, 0 deletions
diff --git a/src/graphics/CGLContext.cpp b/src/graphics/CGLContext.cpp
new file mode 100644
index 0000000..f9f0471
--- /dev/null
+++ b/src/graphics/CGLContext.cpp
@@ -0,0 +1,114 @@
+//
+//  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 "CGLContext.h"
+
+#include "../base/Exception.h"
+#include "../base/Logger.h"
+
+#ifdef __APPLE__
+#include <ApplicationServices/ApplicationServices.h>
+#endif
+
+#include <SDL/SDL.h>
+#include <SDL/SDL_syswm.h>
+
+
+#include <iostream>
+
+
+namespace avg {
+
+using namespace std;
+using namespace boost;
+
+CGLContext::CGLContext(const GLConfig& glConfig, const IntPoint& windowSize, 
+        const SDL_SysWMinfo* pSDLWMInfo)
+    : GLContext(windowSize, pSDLWMInfo)
+{
+    if (pSDLWMInfo) {
+        m_Context = CGLGetCurrentContext();
+        setCurrent();
+    } else {
+        CGLPixelFormatObj pixelFormatObj;
+        GLint numPixelFormats;
+
+        CGLPixelFormatAttribute attribs[] = {(CGLPixelFormatAttribute)NULL};
+        CGLChoosePixelFormat(attribs, &pixelFormatObj, &numPixelFormats);
+
+        CGLError err = CGLCreateContext(pixelFormatObj, 0, &m_Context);
+        if (err) {
+            cerr << CGLErrorString(err) << endl;
+            AVG_ASSERT(false);
+        }
+        CGLDestroyPixelFormat(pixelFormatObj);
+    }
+    init(glConfig, !pSDLWMInfo);
+}
+
+CGLContext::~CGLContext()
+{
+    deleteObjects();
+    if (m_Context && ownsContext()) {
+        CGLSetCurrentContext(0);
+        CGLDestroyContext(m_Context);
+        m_Context = 0;
+    }
+}
+
+void CGLContext::activate()
+{
+    CGLError err = CGLSetCurrentContext(m_Context);
+    AVG_ASSERT(err == kCGLNoError);
+    setCurrent();
+}
+
+bool CGLContext::initVBlank(int rate) 
+{
+    if (rate > 0) {
+        initMacVBlank(rate);
+        return true;
+    } else {
+        initMacVBlank(0);
+        return false;
+    }
+}
+
+void CGLContext::initMacVBlank(int rate)
+{
+    CGLContextObj context = CGLGetCurrentContext();
+    AVG_ASSERT (context);
+#if MAC_OS_X_VERSION_10_5
+    GLint l = rate;
+#else
+    long l = rate;
+#endif
+    if (rate > 1) {
+        AVG_TRACE(Logger::category::CONFIG, Logger::severity::WARNING,
+                "VBlank rate set to " << rate 
+                << " but Mac OS X only supports 1. Assuming 1.");
+        l = 1;
+    }
+    CGLError err = CGLSetParameter(context, kCGLCPSwapInterval, &l);
+    AVG_ASSERT(!err);
+}
+
+}