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https://github.com/Ryujinx/Ryujinx.git
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* Make all title id instances unsigned * Replace address and size with ulong instead of signed types Long overdue change. Also change some logics here and there to optimize with the new memory manager. * Address Ac_K's comments * Remove uneeded cast all around * Fixes some others misalignment
157 lines
5.8 KiB
C#
157 lines
5.8 KiB
C#
using LibHac.Common;
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using LibHac.Fs;
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using LibHac.Fs.Fsa;
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using LibHac.FsSystem;
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using LibHac.FsSystem.NcaUtils;
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using Ryujinx.HLE.Exceptions;
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using Ryujinx.HLE.FileSystem;
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using Ryujinx.HLE.FileSystem.Content;
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using System;
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using System.Buffers.Binary;
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using System.Collections.Generic;
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using System.IO;
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using static Ryujinx.HLE.Utilities.FontUtils;
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namespace Ryujinx.HLE.HOS.Font
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{
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class SharedFontManager
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{
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private Switch _device;
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private ulong _physicalAddress;
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private struct FontInfo
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{
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public int Offset;
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public int Size;
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public FontInfo(int offset, int size)
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{
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Offset = offset;
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Size = size;
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}
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}
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private Dictionary<SharedFontType, FontInfo> _fontData;
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public SharedFontManager(Switch device, ulong physicalAddress)
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{
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_physicalAddress = physicalAddress;
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_device = device;
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}
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public void Initialize(ContentManager contentManager)
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{
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_fontData?.Clear();
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_fontData = null;
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}
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public void EnsureInitialized(ContentManager contentManager)
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{
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if (_fontData == null)
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{
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_device.Memory.ZeroFill(_physicalAddress, Horizon.FontSize);
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uint fontOffset = 0;
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FontInfo CreateFont(string name)
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{
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if (contentManager.TryGetFontTitle(name, out ulong fontTitle) &&
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contentManager.TryGetFontFilename(name, out string fontFilename))
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{
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string contentPath = contentManager.GetInstalledContentPath(fontTitle, StorageId.NandSystem, NcaContentType.Data);
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string fontPath = _device.FileSystem.SwitchPathToSystemPath(contentPath);
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if (!string.IsNullOrWhiteSpace(fontPath))
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{
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byte[] data;
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using (IStorage ncaFileStream = new LocalStorage(fontPath, FileAccess.Read, FileMode.Open))
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{
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Nca nca = new Nca(_device.System.KeySet, ncaFileStream);
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IFileSystem romfs = nca.OpenFileSystem(NcaSectionType.Data, _device.System.FsIntegrityCheckLevel);
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romfs.OpenFile(out IFile fontFile, ("/" + fontFilename).ToU8Span(), OpenMode.Read).ThrowIfFailure();
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data = DecryptFont(fontFile.AsStream());
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}
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FontInfo info = new FontInfo((int)fontOffset, data.Length);
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WriteMagicAndSize(_physicalAddress + fontOffset, data.Length);
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fontOffset += 8;
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uint start = fontOffset;
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for (; fontOffset - start < data.Length; fontOffset++)
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{
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_device.Memory.Write(_physicalAddress + fontOffset, data[fontOffset - start]);
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}
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return info;
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}
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else
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{
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if (!contentManager.TryGetSystemTitlesName(fontTitle, out string titleName))
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{
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titleName = "Unknown";
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}
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throw new InvalidSystemResourceException($"{titleName} ({fontTitle:x8}) system title not found! This font will not work, provide the system archive to fix this error. (See https://github.com/Ryujinx/Ryujinx#requirements for more information)");
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}
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}
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else
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{
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throw new ArgumentException($"Unknown font \"{name}\"!");
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}
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}
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_fontData = new Dictionary<SharedFontType, FontInfo>
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{
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{ SharedFontType.JapanUsEurope, CreateFont("FontStandard") },
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{ SharedFontType.SimplifiedChinese, CreateFont("FontChineseSimplified") },
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{ SharedFontType.SimplifiedChineseEx, CreateFont("FontExtendedChineseSimplified") },
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{ SharedFontType.TraditionalChinese, CreateFont("FontChineseTraditional") },
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{ SharedFontType.Korean, CreateFont("FontKorean") },
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{ SharedFontType.NintendoEx, CreateFont("FontNintendoExtended") }
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};
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if (fontOffset > Horizon.FontSize)
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{
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throw new InvalidSystemResourceException(
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$"The sum of all fonts size exceed the shared memory size. " +
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$"Please make sure that the fonts don't exceed {Horizon.FontSize} bytes in total. " +
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$"(actual size: {fontOffset} bytes).");
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}
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}
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}
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private void WriteMagicAndSize(ulong address, int size)
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{
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const int decMagic = 0x18029a7f;
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const int key = 0x49621806;
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int encryptedSize = BinaryPrimitives.ReverseEndianness(size ^ key);
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_device.Memory.Write(address + 0, decMagic);
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_device.Memory.Write(address + 4, encryptedSize);
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}
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public int GetFontSize(SharedFontType fontType)
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{
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EnsureInitialized(_device.System.ContentManager);
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return _fontData[fontType].Size;
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}
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public int GetSharedMemoryAddressOffset(SharedFontType fontType)
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{
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EnsureInitialized(_device.System.ContentManager);
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return _fontData[fontType].Offset + 8;
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}
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}
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}
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