add temporary registry keys

cnc-ddraw.vcxproj

@@ -49,6 +49,7 @@
     <ClCompile Include="src\IDirect3D\IDirect3D7.c" />
     <ClCompile Include="src\IAMMediaStream\IAMMediaStream.c" />
     <ClCompile Include="src\IDirectDraw\IDirectDrawGammaControl.c" />
+    <ClCompile Include="src\indeo.c" />
     <ClCompile Include="src\ini.c" />
     <ClCompile Include="src\utils.c" />
     <ClCompile Include="src\hook.c" />
@@ -84,6 +85,7 @@
     <ClInclude Include="inc\IDirect3D.h" />
     <ClInclude Include="inc\IAMMediaStream.h" />
     <ClInclude Include="inc\IDirectDrawGammaControl.h" />
+    <ClInclude Include="inc\indeo.h" />
     <ClInclude Include="inc\ini.h" />
     <ClInclude Include="inc\patch.h" />
     <ClInclude Include="inc\utils.h" />

cnc-ddraw.vcxproj.filters

@@ -162,6 +162,9 @@
     <ClCompile Include="src\versionhelpers.c">
       <Filter>Source Files</Filter>
     </ClCompile>
+    <ClCompile Include="src\indeo.c">
+      <Filter>Source Files</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="inc\debug.h">
@@ -281,6 +284,9 @@
     <ClInclude Include="inc\versionhelpers.h">
       <Filter>Header Files</Filter>
     </ClInclude>
+    <ClInclude Include="inc\indeo.h">
+      <Filter>Header Files</Filter>
+    </ClInclude>
   </ItemGroup>
   <ItemGroup>
     <ResourceCompile Include="res.rc">

inc/indeo.h

@@ -0,0 +1,7 @@
+#ifndef INDEO_H
+#define INDEO_H
+
+void indeo_enable();
+void indeo_disable();
+
+#endif

src/dllmain.c

@@ -9,6 +9,7 @@
 #include "debug.h"
 #include "config.h"
 #include "hook.h"
+#include "indeo.h"
 #include "versionhelpers.h"
 
 
@@ -120,6 +121,7 @@ BOOL WINAPI DllMain(HANDLE hDll, DWORD dwReason, LPVOID lpReserved)
                 set_aware();
         }
 
+        indeo_enable();
         timeBeginPeriod(1);
         hook_init();
         break;
@@ -133,6 +135,7 @@ BOOL WINAPI DllMain(HANDLE hDll, DWORD dwReason, LPVOID lpReserved)
 
         cfg_save();
 
+        indeo_disable();
         timeEndPeriod(1);
         dinput_hook_exit();
         hook_exit();

src/indeo.c

@@ -0,0 +1,61 @@
+#include <windows.h>
+
+
+void indeo_enable()
+{
+    HKEY hkey;
+    LONG status =
+        RegCreateKeyExA(
+            HKEY_CURRENT_USER,
+            "SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion\\Drivers32",
+            0,
+            NULL,
+            REG_OPTION_NON_VOLATILE,
+            KEY_WRITE | KEY_QUERY_VALUE,
+            NULL,
+            &hkey,
+            NULL);
+
+    if (status == ERROR_SUCCESS)
+    {
+        LPCTSTR iv31 = "ir32_32.dll";
+        RegSetValueExA(hkey, "vidc.iv31", 0, REG_SZ, iv31, strlen(iv31) + 1);
+
+        LPCTSTR iv32 = "ir32_32.dll";
+        RegSetValueExA(hkey, "vidc.iv32", 0, REG_SZ, iv32, strlen(iv32) + 1);
+
+        LPCTSTR iv41 = "ir41_32.ax";
+        RegSetValueExA(hkey, "vidc.iv41", 0, REG_SZ, iv41, strlen(iv41) + 1);
+
+        LPCTSTR iv50 = "ir50_32.dll";
+        RegSetValueExA(hkey, "vidc.iv50", 0, REG_SZ, iv50, strlen(iv50) + 1);
+
+        RegCloseKey(hkey);
+    }
+}
+
+void indeo_disable()
+{
+    HKEY hkey;
+    LONG status =
+        RegCreateKeyExA(
+            HKEY_CURRENT_USER,
+            "SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion\\Drivers32",
+            0,
+            NULL,
+            REG_OPTION_NON_VOLATILE,
+            KEY_WRITE | KEY_QUERY_VALUE,
+            NULL,
+            &hkey,
+            NULL);
+
+    if (status == ERROR_SUCCESS)
+    {
+        RegDeleteValueA(hkey, "vidc.iv31");
+        RegDeleteValueA(hkey, "vidc.iv32");
+        RegDeleteValueA(hkey, "vidc.iv41");
+        RegDeleteValueA(hkey, "vidc.iv50");
+
+        RegCloseKey(hkey);
+    }
+}