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HLE: extract custom NACP data functionality into a static helper for generic reuse elsewhere, and clarify magic numbers.

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This commit is contained in:
Evan Husted 2024-12-07 04:30:04 -06:00
parent eda4f4349b
commit 290a6ad5de
2 changed files with 48 additions and 20 deletions
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37
src/Ryujinx.HLE/StructHelpers.cs Normal file
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using LibHac.Common;
using LibHac.Ns;
using System;
using System.Text;
namespace Ryujinx.HLE
{
public static class StructHelpers
{
public static BlitStruct<ApplicationControlProperty> CreateCustomNacpData(string name, string version)
{
// https://switchbrew.org/wiki/NACP
const int OffsetOfDisplayVersion = 0x3060;
// https://switchbrew.org/wiki/NACP#ApplicationTitle
const int TotalApplicationTitles = 0x10;
const int SizeOfApplicationTitle = 0x300;
const int OffsetOfApplicationPublisherStrings = 0x200;
var nacpData = new BlitStruct<ApplicationControlProperty>(1);
// name and publisher buffer
// repeat once for each locale (the ApplicationControlProperty has 16 locales)
for (int i = 0; i < TotalApplicationTitles; i++)
{
Encoding.ASCII.GetBytes(name).AsSpan().CopyTo(nacpData.ByteSpan[(i * SizeOfApplicationTitle)..]);
"Ryujinx"u8.CopyTo(nacpData.ByteSpan[(i * SizeOfApplicationTitle + OffsetOfApplicationPublisherStrings)..]);
}
// version buffer
Encoding.ASCII.GetBytes(version).AsSpan().CopyTo(nacpData.ByteSpan[OffsetOfDisplayVersion..]);
return nacpData;
}
}
}