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using ChocolArm64.Exceptions;
using ChocolArm64.Memory;
using Ryujinx.HLE.Logging;
using Ryujinx.HLE.OsHle;
using Ryujinx.HLE.OsHle.Handles;
using Ryujinx.HLE.Resource;
using System;
using System.Collections.Generic;
using System.IO;
namespace Ryujinx.HLE.Font
{
public class SharedFontManager
{
private const uint SharedMemorySize = 0x1100000;
private Logger Log;
private string FontsPath;
private object ShMemLock;
private (AMemory, long, long)[] ShMemPositions;
private Dictionary<SharedFontType, byte[]> FontData;
private uint[] LoadedFonts;
public SharedFontManager(Logger Log, string SystemPath)
{
this.Log = Log;
this.FontsPath = Path.Combine(SystemPath, "fonts");
ShMemLock = new object();
ShMemPositions = new(AMemory, long, long)[0];
FontData = new Dictionary<SharedFontType, byte[]>()
{
{ SharedFontType.JapanUsEurope, GetData("FontStandard") },
{ SharedFontType.SimplifiedChinese, GetData("FontChineseSimplified") },
{ SharedFontType.SimplifiedChineseEx, GetData("FontExtendedChineseSimplified") },
{ SharedFontType.TraditionalChinese, GetData("FontChineseTraditional") },
{ SharedFontType.Korean, GetData("FontKorean") },
{ SharedFontType.NintendoEx, GetData("FontNintendoExtended") }
};
int FontMemoryUsage = 0;
foreach (byte[] data in FontData.Values)
{
FontMemoryUsage += data.Length;
FontMemoryUsage += 0x8;
}
if (FontMemoryUsage > SharedMemorySize)
{
throw new InvalidSystemResourceException($"The sum of all fonts size exceed the shared memory size. Please make sure that the fonts don't exceed {SharedMemorySize} bytes in total. (actual size: {FontMemoryUsage} bytes)");
}
LoadedFonts = new uint[FontData.Count];
}
public byte[] GetData(string FontName)
{
string FontFilePath = Path.Combine(FontsPath, $"{FontName}.ttf");
if (File.Exists(FontFilePath))
{
return File.ReadAllBytes(FontFilePath);
}
else
{
throw new InvalidSystemResourceException($"Font \"{FontName}.ttf\" not found. Please provide it in \"{FontsPath}\".");
}
}
public void MapFont(SharedFontType FontType, AMemory Memory, long Position)
{
uint SharedMemoryAddressOffset = GetSharedMemoryAddressOffset(FontType);
// TODO: find what are the 8 bytes before the font
Memory.WriteUInt64(Position + SharedMemoryAddressOffset - 8, 0);
Memory.WriteBytes(Position + SharedMemoryAddressOffset, FontData[FontType]);
}
public void PropagateNewMapFont(SharedFontType Type)
{
lock (ShMemLock)
{
foreach ((AMemory Memory, long Position, long Size) in ShMemPositions)
{
AMemoryMapInfo MemoryInfo = Memory.Manager.GetMapInfo(Position);
if (MemoryInfo == null)
{
throw new VmmPageFaultException(Position);
}
// The memory is read only, we need to changes that to add the new font
AMemoryPerm originalPerms = MemoryInfo.Perm;
Memory.Manager.Reprotect(Position, Size, AMemoryPerm.RW);
MapFont(Type, Memory, Position);
Memory.Manager.Reprotect(Position, Size, originalPerms);
}
}
}
internal void ShMemMap(object sender, EventArgs e)
{
HSharedMem SharedMem = (HSharedMem)sender;
lock (ShMemLock)
{
ShMemPositions = SharedMem.GetVirtualPositions();
(AMemory Memory, long Position, long Size) = ShMemPositions[ShMemPositions.Length - 1];
for (int Type = 0; Type < LoadedFonts.Length; Type++)
{
if (LoadedFonts[(int)Type] == 1)
{
MapFont((SharedFontType)Type, Memory, Position);
}
}
}
}
internal void ShMemUnmap(object sender, EventArgs e)
{
HSharedMem SharedMem = (HSharedMem)sender;
lock (ShMemLock)
{
ShMemPositions = SharedMem.GetVirtualPositions();
}
}
public void Load(SharedFontType FontType)
{
if (LoadedFonts[(int)FontType] == 0)
{
PropagateNewMapFont(FontType);
}
LoadedFonts[(int)FontType] = 1;
}
public uint GetLoadState(SharedFontType FontType)
{
if (LoadedFonts[(int)FontType] != 1)
{
// Some games don't request a load, so we need to load it here.
Load(FontType);
return 0;
}
return LoadedFonts[(int)FontType];
}
public uint GetFontSize(SharedFontType FontType)
{
return (uint)FontData[FontType].Length;
}
public uint GetSharedMemoryAddressOffset(SharedFontType FontType)
{
uint Pos = 0x8;
for (SharedFontType Type = SharedFontType.JapanUsEurope; Type < FontType; Type++)
{
Pos += GetFontSize(Type);
Pos += 0x8;
}
return Pos;
}
public int Count => FontData.Count;
}
}
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