Features.

svn-id: r13246

backends/dc/dc.h

@@ -31,6 +31,15 @@ class OSystem_Dreamcast : public OSystem {
   OSystem_Dreamcast();
 
 
+  // Determine whether the backend supports the specified feature.
+  bool hasFeature(Feature f);
+
+  // En-/disable the specified feature.
+  void setFeatureState(Feature f, bool enable);
+
+  // Query the state of the specified feature. For example, test whether
+  bool getFeatureState(Feature f);
+
   // Retrieve a list of all graphics modes supported by this backend.
   const GraphicsMode *getSupportedGraphicsModes() const;
 

backends/dc/dcmain.cpp

@@ -143,6 +143,47 @@ void OSystem_Dreamcast::deleteMutex(MutexRef mutex)
 }
 
 
+/* Features */
+bool OSystem_Dreamcast::hasFeature(Feature f)
+{
+  switch(f) {
+  case kFeatureAspectRatioCorrection:
+  case kFeatureVirtualKeyboard:
+    return true;
+  default:
+    return false;
+  }
+}
+
+void OSystem_Dreamcast::setFeatureState(Feature f, bool enable)
+{
+  switch(f) {
+  case kFeatureAspectRatioCorrection:
+    /* FIXME */
+    break;
+  case kFeatureVirtualKeyboard:
+    /* FIXME */
+    break;
+  default:
+    break;
+  }
+}
+
+bool OSystem_Dreamcast::getFeatureState(Feature f)
+{
+  switch(f) {
+  case kFeatureAspectRatioCorrection:
+    /* FIXME */
+    return false;
+  case kFeatureVirtualKeyboard:
+    /* FIXME */
+    return false;
+  default:
+    return false;
+  }
+}
+
+
 void dc_init_hardware()
 {
 #ifndef NOSERIAL