Added native resolving of file paths.

MonoGame.Framework/Platform/Native/TitleContainer.Native.cs

@@ -3,6 +3,8 @@
 // file 'LICENSE.txt', which is part of this source code package.
 
 using System.IO;
+using MonoGame.Interop;
+
 
 namespace Microsoft.Xna.Framework;
 
@@ -15,13 +17,8 @@ static partial void PlatformInit()
 
     private static Stream PlatformOpenStream(string safeName)
     {
-        // TODO: How do we handle this?
-        //
-        // It seems like we still need platform specific C# code here?
-        //
-        // Or do we make the native code transform the string?
-        //
-        var absolutePath = Path.Combine(Location, safeName);
+        var absolutePath = MGP.Platform_MakePath(Location, safeName);
+
         return File.OpenRead(absolutePath);
     }
 }

native/monogame/common/MGM.cpp

@@ -109,15 +109,15 @@ MGM_Video* MGM_Video_Create(const char* mediaFilePath, mgint cachedFrameNum, mgi
 
 	// TODO: Like Song above we should detect the media
 	// format from a native decoder libraries that are
-	// portable to all our target platforms:
-	//
-	// libtheora - free but limited quality/performance
-	// OpenH264 -
-	// ???
+	// portable to all our target platforms.
 	//
 	// It should then spin up thread which decodes the
 	// video/audio streams.
 
+	// TOOD: Ideally we just support OpenH264+AAC which is pretty
+	// much industry standard now.  Anything else is not
+	// importaint unless a new standard comes around.
+
 	auto video = new MGM_Video();
 	video->duration = duration = 0;
 	video->width = width = 0;

native/monogame/include/api_MGP.h

@@ -24,6 +24,7 @@ MG_EXPORT void MGP_Platform_StartRunLoop(MGP_Platform* platform);
 MG_EXPORT mgbool MGP_Platform_BeforeRun(MGP_Platform* platform);
 MG_EXPORT mgbool MGP_Platform_BeforeUpdate(MGP_Platform* platform);
 MG_EXPORT mgbool MGP_Platform_BeforeDraw(MGP_Platform* platform);
+MG_EXPORT const char* MGP_Platform_MakePath(const char* location, const char* path);
 MG_EXPORT MGP_Window* MGP_Window_Create(MGP_Platform* platform, mgint width, mgint height, const char* title);
 MG_EXPORT void MGP_Window_Destroy(MGP_Window* window);
 MG_EXPORT void MGP_Window_SetIconBitmap(MGP_Window* window, mgbyte* icon, mgint length);

native/monogame/include/mg_common.h

@@ -20,6 +20,11 @@
 #define MG_GENERATE_TRAP() __builtin_trap()
 #endif
 
+#ifdef _MSC_VER
+#define MG_PATH_SEPARATOR "\\"
+#else
+#define MG_PATH_SEPARATOR "/"
+#endif
 
 inline void MG_Print_StdError(const char* file, int line, const char* message)
 {

native/monogame/sdl/MGP_sdl.cpp

@@ -8,6 +8,10 @@
 
 #include <sdl.h>
 
+#if _WIN32
+#include <combaseapi.h>
+#endif
+
 
 struct MGP_Platform
 {
@@ -213,6 +217,36 @@ void MGP_Platform_Destroy(MGP_Platform* platform)
 	delete platform;
 }
 
+const char* MGP_Platform_MakePath(const char* location, const char* path)
+{
+    assert(location != nullptr);
+    assert(path != nullptr);
+
+    size_t length = strlen(path) + 1;
+    if (location[0])
+        length += strlen(location) + 1;
+
+#if _WIN32
+    // Windows requires marshaled strings to be allocated like this.
+    char* fpath = (char*)CoTaskMemAlloc(length);    
+#else
+    char* fpath = (char*)malloc(length);
+#endif
+
+    if (location[0])
+    {
+        strcpy_s(fpath, length, location);
+        strcat_s(fpath, length, MG_PATH_SEPARATOR);
+        strcat_s(fpath, length, path);
+    }
+    else
+    {
+        strcpy_s(fpath, length, path);
+    }
+
+    return fpath;
+}
+
 void MGP_Platform_BeforeInitialize(MGP_Platform* platform)
 {
 	assert(platform != nullptr);