- implement Mac specific abstract UPlatform.GetMusicPath() for win and linux

- add UPlatform.AddLibrarySearchPath() to be able to add new dll search paths
- use AddLibrarySearchPath() for loading plugin dependencies (e.g. ffmpeg libs) from game/mediaplugins/deps

git-svn-id: svn://svn.code.sf.net/p/ultrastardx/svn/branches/experimental@2758 b956fd51-792f-4845-bead-9b4dfca2ff2c

3 files changed, 34 insertions, 1 deletions

diff --git a/mediaplugin/src/base/UPlatform.pas b/mediaplugin/src/base/UPlatform.pas
index 6d884979..4239e21a 100644
--- a/mediaplugin/src/base/UPlatform.pas
+++ b/mediaplugin/src/base/UPlatform.pas
@@ -51,9 +51,11 @@ type
     procedure Halt; virtual;
 
     function GetLogPath:        IPath; virtual; abstract;
-    function GetMusicPath:      IPath; virtual; abstract;
+    function GetMusicPath:      IPath; virtual;
     function GetGameSharedPath: IPath; virtual; abstract;
     function GetGameUserPath:   IPath; virtual; abstract;
+
+    procedure AddLibrarySearchPath(const DLLPath: IPath); virtual;
   end;
 
   function Platform(): TPlatform;
@@ -113,6 +115,21 @@ begin
   Result := ExecDir.GetAbsolutePath();
 end;
 
+{**
+ * Dummy implementation (Mac specific)
+ *}
+function TPlatform.GetMusicPath: IPath;
+begin
+  Result := PATH_NONE;
+end;
+
+{**
+ * Dummy implementation (Windows specific)
+ *}
+procedure TPlatform.AddLibrarySearchPath(const DLLPath: IPath);
+begin
+end;
+
 (**
  * Default TerminateIfAlreadyRunning() implementation
  *)
diff --git a/mediaplugin/src/base/UPlatformWindows.pas b/mediaplugin/src/base/UPlatformWindows.pas
index 91d3cce6..a0059687 100644
--- a/mediaplugin/src/base/UPlatformWindows.pas
+++ b/mediaplugin/src/base/UPlatformWindows.pas
@@ -51,6 +51,7 @@ type
     public
       procedure Init; override;
       function TerminateIfAlreadyRunning(var WndTitle: String): Boolean; override;
+      procedure AddLibrarySearchPath(const DLLPath: IPath); override;
 
       function GetLogPath: IPath; override;
       function GetGameSharedPath: IPath; override;
@@ -63,6 +64,7 @@ uses
   SysUtils,
   ShlObj,
   Windows,
+  UPathUtils,
   UConfig;
 
 procedure TPlatformWindows.Init;
@@ -206,4 +208,12 @@ begin
     Result := GetSpecialPath(CSIDL_APPDATA).Append('ultrastardx', pdAppend);
 end;
 
+function SetDllDirectory(lpPathName: PWideChar): Bool; stdcall;
+    external kernel32 name 'SetDllDirectoryW';
+
+procedure TPlatformWindows.AddLibrarySearchPath(const DLLPath: IPath);
+begin
+  SetDllDirectory(PWideChar(DLLPath.ToWide()));
+end;
+
 end.
diff --git a/mediaplugin/src/media/UMediaPlugin.pas b/mediaplugin/src/media/UMediaPlugin.pas
index 4baa778a..8632b9df 100644
--- a/mediaplugin/src/media/UMediaPlugin.pas
+++ b/mediaplugin/src/media/UMediaPlugin.pas
@@ -168,6 +168,7 @@ uses
   UPath,
   UPathUtils,
   ULog,
+  UPlatform,
   UAudioDecoderPlugin,
   UAudioConverterPlugin,
   UVideoDecoderPlugin;
@@ -434,6 +435,11 @@ const
 begin
   MediaPlugins := TList.Create;
 
+  {$IFDEF MSWINDOWS}
+  // add an additional dll search path for plugin dependencies
+  Platform.AddLibrarySearchPath(MediaPluginPath.Append('deps'));
+  {$ENDIF}
+
   LibPath := MediaPluginPath.Append('*' + ModuleExt);
   Iter := FileSystem.FileFind(LibPath, faAnyFile);
   while (Iter.HasNext) do