[Base] Android content URI file descriptor opening

src/xenia/base/filesystem.h

@@ -14,8 +14,10 @@
 #include <iterator>
 #include <memory>
 #include <string>
+#include <string_view>
 #include <vector>
 
+#include "xenia/base/platform.h"
 #include "xenia/base/string.h"
 
 namespace xe {
@@ -122,6 +124,14 @@ struct FileInfo {
 bool GetInfo(const std::filesystem::path& path, FileInfo* out_info);
 std::vector<FileInfo> ListFiles(const std::filesystem::path& path);
 
+#if XE_PLATFORM_ANDROID
+void AndroidInitialize();
+void AndroidShutdown();
+bool IsAndroidContentUri(const std::string_view source);
+int OpenAndroidContentFileDescriptor(const std::string_view uri,
+                                     const char* mode);
+#endif  // XE_PLATFORM_ANDROID
+
 }  // namespace filesystem
 }  // namespace xe