From 47ba3f828276d7cc3547d12f669aa24df31d7f05 Mon Sep 17 00:00:00 2001
From: Sour <mesenemu@gmail.com>
Date: Mon, 6 Aug 2018 19:48:57 -0400
Subject: [PATCH] Libretro: Enable softpatching support

---
 Core/VirtualFile.cpp  | 8 ++++++++
 Core/VirtualFile.h    | 1 +
 Libretro/libretro.cpp | 6 ++++--
 3 files changed, 13 insertions(+), 2 deletions(-)

diff --git a/Core/VirtualFile.cpp b/Core/VirtualFile.cpp
index 09ef4818..c8594df5 100644
--- a/Core/VirtualFile.cpp
+++ b/Core/VirtualFile.cpp
@@ -36,6 +36,14 @@ VirtualFile::VirtualFile(const string & file)
 	}
 }
 
+VirtualFile::VirtualFile(const void *buffer, size_t bufferSize, string fileName)
+{
+	_path = fileName;
+
+	_data.resize(bufferSize);
+	memcpy(_data.data(), buffer, bufferSize);
+}
+
 VirtualFile::VirtualFile(std::istream & input, string filePath)
 {
 	_path = filePath;
diff --git a/Core/VirtualFile.h b/Core/VirtualFile.h
index bf0bf542..590bf1c6 100644
--- a/Core/VirtualFile.h
+++ b/Core/VirtualFile.h
@@ -20,6 +20,7 @@ public:
 	VirtualFile();
 	VirtualFile(const string &archivePath, const string innerFile);
 	VirtualFile(const string &file);
+	VirtualFile(const void *buffer, size_t bufferSize, string fileName = "noname");
 	VirtualFile(std::istream &input, string filePath);
 
 	operator std::string() const;
diff --git a/Libretro/libretro.cpp b/Libretro/libretro.cpp
index 2db4f2f4..94cd6a82 100644
--- a/Libretro/libretro.cpp
+++ b/Libretro/libretro.cpp
@@ -977,7 +977,9 @@ extern "C" {
 		_console->GetSettings()->SetControllerType(1, ControllerType::StandardController);
 		_console->GetSettings()->SetControllerType(2, ControllerType::None);
 		_console->GetSettings()->SetControllerType(3, ControllerType::None);
-		bool result = _console->Initialize(game->path);
+
+		VirtualFile romData(game->data, game->size, game->path);
+		bool result = _console->Initialize(romData);
 
 		if(result) {
 			//Set default dipswitches for some VS System games
@@ -1026,7 +1028,7 @@ extern "C" {
 
 		info->library_name = "Mesen";
 		info->library_version = _mesenVersion.c_str();
-		info->need_fullpath = true;
+		info->need_fullpath = false;
 		info->valid_extensions = "nes|fds|unf|unif";
 		info->block_extract = false;
 	}