R/Ryujinx.HLE/HOS/Font/SharedFontManager.cs
Alex Barney 290f5e812e Update to LibHac 0.2.0 (#549)
* Update to LibHac 0.2.0

* Changes based on feedback
2019-01-05 01:41:49 +01:00

172 lines
6.4 KiB
C#

using LibHac;
using LibHac.IO;
using Ryujinx.HLE.FileSystem;
using Ryujinx.HLE.FileSystem.Content;
using Ryujinx.HLE.Resource;
using Ryujinx.HLE.Utilities;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using static Ryujinx.HLE.Utilities.FontUtils;
namespace Ryujinx.HLE.HOS.Font
{
class SharedFontManager
{
private Switch _device;
private long _physicalAddress;
private string _fontsPath;
private struct FontInfo
{
public int Offset;
public int Size;
public FontInfo(int offset, int size)
{
Offset = offset;
Size = size;
}
}
private Dictionary<SharedFontType, FontInfo> _fontData;
public SharedFontManager(Switch device, long physicalAddress)
{
_physicalAddress = physicalAddress;
_device = device;
_fontsPath = Path.Combine(device.FileSystem.GetSystemPath(), "fonts");
}
public void EnsureInitialized(ContentManager contentManager)
{
if (_fontData == null)
{
_device.Memory.FillWithZeros(_physicalAddress, Horizon.FontSize);
uint fontOffset = 0;
FontInfo CreateFont(string name)
{
if (contentManager.TryGetFontTitle(name, out long fontTitle))
{
string contentPath = contentManager.GetInstalledContentPath(fontTitle, StorageId.NandSystem, ContentType.Data);
string fontPath = _device.FileSystem.SwitchPathToSystemPath(contentPath);
if (!string.IsNullOrWhiteSpace(fontPath))
{
int fileIndex = 0;
//Use second file in Chinese Font title for standard
if(name == "FontChineseSimplified")
{
fileIndex = 1;
}
byte[] data;
using (FileStream ncaFileStream = new FileStream(fontPath, FileMode.Open, FileAccess.Read))
{
Nca nca = new Nca(_device.System.KeySet, ncaFileStream.AsStorage(), false);
NcaSection romfsSection = nca.Sections.FirstOrDefault(x => x?.Type == SectionType.Romfs);
Romfs romfs = new Romfs(nca.OpenSection(romfsSection.SectionNum, false, _device.System.FsIntegrityCheckLevel, false));
Stream fontFile = romfs.OpenFile(romfs.Files[fileIndex]).AsStream();
data = DecryptFont(fontFile);
}
FontInfo info = new FontInfo((int)fontOffset, data.Length);
WriteMagicAndSize(_physicalAddress + fontOffset, data.Length);
fontOffset += 8;
uint start = fontOffset;
for (; fontOffset - start < data.Length; fontOffset++)
{
_device.Memory.WriteByte(_physicalAddress + fontOffset, data[fontOffset - start]);
}
return info;
}
}
string fontFilePath = Path.Combine(_fontsPath, name + ".ttf");
if (File.Exists(fontFilePath))
{
byte[] data = File.ReadAllBytes(fontFilePath);
FontInfo info = new FontInfo((int)fontOffset, data.Length);
WriteMagicAndSize(_physicalAddress + fontOffset, data.Length);
fontOffset += 8;
uint start = fontOffset;
for (; fontOffset - start < data.Length; fontOffset++)
{
_device.Memory.WriteByte(_physicalAddress + fontOffset, data[fontOffset - start]);
}
return info;
}
else
{
throw new InvalidSystemResourceException($"Font \"{name}.ttf\" not found. Please provide it in \"{_fontsPath}\".");
}
}
_fontData = new Dictionary<SharedFontType, FontInfo>
{
{ SharedFontType.JapanUsEurope, CreateFont("FontStandard") },
{ SharedFontType.SimplifiedChinese, CreateFont("FontChineseSimplified") },
{ SharedFontType.SimplifiedChineseEx, CreateFont("FontExtendedChineseSimplified") },
{ SharedFontType.TraditionalChinese, CreateFont("FontChineseTraditional") },
{ SharedFontType.Korean, CreateFont("FontKorean") },
{ SharedFontType.NintendoEx, CreateFont("FontNintendoExtended") }
};
if (fontOffset > Horizon.FontSize)
{
throw new InvalidSystemResourceException(
$"The sum of all fonts size exceed the shared memory size. " +
$"Please make sure that the fonts don't exceed {Horizon.FontSize} bytes in total. " +
$"(actual size: {fontOffset} bytes).");
}
}
}
private void WriteMagicAndSize(long position, int size)
{
const int decMagic = 0x18029a7f;
const int key = 0x49621806;
int encryptedSize = EndianSwap.Swap32(size ^ key);
_device.Memory.WriteInt32(position + 0, decMagic);
_device.Memory.WriteInt32(position + 4, encryptedSize);
}
public int GetFontSize(SharedFontType fontType)
{
EnsureInitialized(_device.System.ContentManager);
return _fontData[fontType].Size;
}
public int GetSharedMemoryAddressOffset(SharedFontType fontType)
{
EnsureInitialized(_device.System.ContentManager);
return _fontData[fontType].Offset + 8;
}
}
}