From 4c2d9ff3ff9d7afb1fd0bd764bee5931fa5f053c Mon Sep 17 00:00:00 2001
From: Ac_K <Acoustik666@gmail.com>
Date: Fri, 31 Mar 2023 21:16:46 +0200
Subject: HLE: Refactoring of ApplicationLoader (#4480)

* HLE: Refactoring of ApplicationLoader

* Fix SDL2 Headless

* Addresses gdkchan feedback

* Fixes LoadUnpackedNca RomFS loading

* remove useless casting

* Cleanup and fixe empty application name

* Remove ProcessInfo

* Fixes typo

* ActiveProcess to ActiveApplication

* Update check

* Clean using.

* Use the correct filepath when loading Homebrew.npdm

* Fix NRE in ProcessResult if MetaLoader is null

* Add more checks for valid processId & return success

* Add missing logging statement for npdm error

* Return result for LoadKip()

* Move error logging out of PFS load extension method

This avoids logging "Could not find Main NCA"
followed by "Loading main..." when trying to start hbl.

* Fix GUIs not checking load results

* Fix style and formatting issues

* Fix formatting and wording

* gtk: Refactor LoadApplication()

---------

Co-authored-by: TSR Berry <20988865+TSRBerry@users.noreply.github.com>
---
 .../Processes/Extensions/MetaLoaderExtensions.cs   | 61 ++++++++++++++++++++++
 1 file changed, 61 insertions(+)
 create mode 100644 Ryujinx.HLE/Loaders/Processes/Extensions/MetaLoaderExtensions.cs

(limited to 'Ryujinx.HLE/Loaders/Processes/Extensions/MetaLoaderExtensions.cs')

diff --git a/Ryujinx.HLE/Loaders/Processes/Extensions/MetaLoaderExtensions.cs b/Ryujinx.HLE/Loaders/Processes/Extensions/MetaLoaderExtensions.cs
new file mode 100644
index 00000000..c639ee52
--- /dev/null
+++ b/Ryujinx.HLE/Loaders/Processes/Extensions/MetaLoaderExtensions.cs
@@ -0,0 +1,61 @@
+using LibHac.Common;
+using LibHac.Fs;
+using LibHac.Fs.Fsa;
+using LibHac.Loader;
+using LibHac.Util;
+using Ryujinx.Common;
+using System;
+
+namespace Ryujinx.HLE.Loaders.Processes.Extensions
+{
+    public static class MetaLoaderExtensions
+    {
+        public static ulong GetProgramId(this MetaLoader metaLoader)
+        {
+            metaLoader.GetNpdm(out var npdm).ThrowIfFailure();
+
+            return npdm.Aci.ProgramId.Value;
+        }
+
+        public static string GetProgramName(this MetaLoader metaLoader)
+        {
+            metaLoader.GetNpdm(out var npdm).ThrowIfFailure();
+
+            return StringUtils.Utf8ZToString(npdm.Meta.ProgramName);
+        }
+
+        public static bool IsProgram64Bit(this MetaLoader metaLoader)
+        {
+            metaLoader.GetNpdm(out var npdm).ThrowIfFailure();
+
+            return (npdm.Meta.Flags & 1) != 0;
+        }
+
+        public static void LoadDefault(this MetaLoader metaLoader)
+        {
+            byte[] npdmBuffer = EmbeddedResources.Read("Ryujinx.HLE/Homebrew.npdm");
+
+            metaLoader.Load(npdmBuffer).ThrowIfFailure();
+        }
+
+        public static void LoadFromFile(this MetaLoader metaLoader, IFileSystem fileSystem, string path = "")
+        {
+            if (string.IsNullOrEmpty(path))
+            {
+                path = ProcessConst.MainNpdmPath;
+            }
+
+            using var npdmFile = new UniqueRef<IFile>();
+
+            fileSystem.OpenFile(ref npdmFile.Ref, path.ToU8Span(), OpenMode.Read).ThrowIfFailure();
+
+            npdmFile.Get.GetSize(out long fileSize).ThrowIfFailure();
+
+            Span<byte> npdmBuffer = new byte[fileSize];
+
+            npdmFile.Get.Read(out _, 0, npdmBuffer).ThrowIfFailure();
+
+            metaLoader.Load(npdmBuffer).ThrowIfFailure();
+        }
+    }
+}
\ No newline at end of file
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