public G1T(Stream input, bool vita = false)
{
this.vita = vita;
using (BinaryReaderX br = new BinaryReaderX(input))
{
//Deciding on Endianess
var magic1 = br.ReadString(4);
br.ByteOrder = ByteOrder = (magic1 == "GT1G") ? ByteOrder.LittleEndian : ByteOrder.BigEndian;
br.BaseStream.Position = 0;
//Header
header = br.ReadStruct <Header>();
//OffsetList
br.BaseStream.Position = header.dataOffset;
var offsetList = br.ReadMultiple <int>(header.texCount);
//Meta
meta = new List <Meta>();
for (int i = 0; i < header.texCount; i++)
{
br.BaseStream.Position = header.dataOffset + offsetList[i];
var metainfo = br.ReadStruct <Meta>();
meta.Add(metainfo);
byte[] ext = null;
if (metainfo.extHeader > 0)
{
var extSize = br.ReadInt32();
ext = br.ReadBytes(extSize - 4);
}
metaExt.Add(ext);
//Check if format exists
if (!Support.Format.ContainsKey(metainfo.format))
{
throw new Exception($"Unsupported image format 0x{metainfo.format:X2}.");
}
IImageSwizzle swizzle = null;
if (vita)
{
swizzle = new VitaSwizzle(metainfo.width, metainfo.height, Support.Format[metainfo.format].FormatName.Contains("DXT"));
}
else if (Support.Format[metainfo.format].FormatName.Contains("DXT"))
{
swizzle = new BlockSwizzle(metainfo.width, metainfo.height);
}
var setting = new ImageSettings
{
Width = metainfo.width,
Height = metainfo.height,
Swizzle = swizzle,
Format = Support.Format[metainfo.format]
};
settings.Add(setting);
bmps.Add(Common.Load(br.ReadBytes(metainfo.width * metainfo.height * Support.Format[metainfo.format].BitDepth / 8), setting));
}
}
}
public void Save(Stream input)
{
//Sanity check
for (int i = 0; i < bmps.Count; i++)
{
var padWidth = 2 << (int)Math.Log(bmps[i].Width - 1, 2);
var padHeight = 2 << (int)Math.Log(bmps[i].Height - 1, 2);
if (padWidth >= Math.Pow(2, 16) || padHeight >= Math.Pow(2, 16))
{
throw new Exception($"Image {i} has to be smaller than {Math.Pow(2, 15)}x{Math.Pow(2, 15)}");
}
}
using (BinaryWriterX bw = new BinaryWriterX(input, ByteOrder))
{
//Create offsetlist
var offsetList = new List <int>();
var off = header.texCount * 4;
for (int i = 0; i < header.texCount; i++)
{
offsetList.Add(off);
off += 0x8 + ((metaExt[i] != null) ? metaExt[i].Length + 4 : 0);
off += bmps[i].Width * bmps[i].Height * Support.Format[meta[i].format].BitDepth / 8;
}
//Update meta
for (int i = 0; i < header.texCount; i++)
{
meta[i].dimension = (byte)((int)(Math.Log(bmps[i].Width - 1, 2) + 1) | ((int)(Math.Log(bmps[i].Height - 1, 2) + 1) * 16));
}
//Write updated data
bw.BaseStream.Position = header.dataOffset;
foreach (var offInt in offsetList)
{
bw.Write(offInt);
}
//Write images
for (int i = 0; i < bmps.Count; i++)
{
bw.WriteStruct(meta[i]);
if (metaExt[i] != null)
{
bw.Write(metaExt[i].Length + 4);
bw.Write(metaExt[i]);
}
IImageSwizzle swizzle = null;
if (vita)
{
swizzle = new VitaSwizzle(2 << (int)Math.Log(bmps[i].Width - 1, 2), 2 << (int)Math.Log(bmps[i].Height - 1, 2), Support.Format[meta[i].format].FormatName.Contains("DXT"));
}
else if (Support.Format[meta[i].format].FormatName.Contains("DXT"))
{
swizzle = new BlockSwizzle(2 << (int)Math.Log(bmps[i].Width - 1, 2), 2 << (int)Math.Log(bmps[i].Height - 1, 2));
}
var setting = new ImageSettings
{
Width = 2 << (int)Math.Log(bmps[i].Width - 1, 2),
Height = 2 << (int)Math.Log(bmps[i].Height - 1, 2),
Swizzle = swizzle,
Format = Support.Format[meta[i].format]
};
bw.Write(Common.Save(bmps[i], setting));
}
header.fileSize = (int)bw.BaseStream.Length;
//Header
bw.BaseStream.Position = 0;
bw.WriteStruct(header);
}
}
public G1T(Stream input, Platform platform)
{
_platform = platform;
using (BinaryReaderX br = new BinaryReaderX(input))
{
//Deciding on Endianess
var magic1 = br.ReadString(4);
br.ByteOrder = ByteOrder = (magic1 == "GT1G") ? ByteOrder.LittleEndian : ByteOrder.BigEndian;
br.BaseStream.Position = 0;
//Header
header = br.ReadStruct <Header>();
//OffsetList
br.BaseStream.Position = header.dataOffset;
var offsetList = br.ReadMultiple <int>(header.texCount);
//Meta
meta = new List <Meta>();
for (int i = 0; i < header.texCount; i++)
{
br.BaseStream.Position = header.dataOffset + offsetList[i];
var metainfo = br.ReadStruct <Meta>();
meta.Add(metainfo);
byte[] ext = null;
if (metainfo.extHeader > 0)
{
var extSize = br.ReadInt32();
ext = br.ReadBytes(extSize - 4);
}
metaExt.Add(ext);
//Check if format exists
switch (_platform)
{
case Platform.N3DS:
if (!Support.N3DSFormat.ContainsKey(metainfo.format))
{
throw new Exception($"Unsupported image format 0x{metainfo.format:X2}.");
}
break;
case Platform.PS:
if (!Support.PSFormat.ContainsKey(metainfo.format))
{
throw new Exception($"Unsupported image format 0x{metainfo.format:X2}.");
}
break;
case Platform.Vita:
if (!Support.VitaFormat.ContainsKey(metainfo.format))
{
throw new Exception($"Unsupported image format 0x{metainfo.format:X2}.");
}
break;
}
var format = (_platform == Platform.Vita) ? Support.VitaFormat[meta[i].format] : (_platform == Platform.N3DS) ? Support.N3DSFormat[meta[i].format] : Support.PSFormat[meta[i].format];
IImageSwizzle swizzle = null;
if (_platform == Platform.Vita)
{
swizzle = new VitaSwizzle(metainfo.width, metainfo.height, format.FormatName.Contains("DXT"));
}
else if (_platform == Platform.N3DS)
{
swizzle = new CTRSwizzle(metainfo.width, metainfo.height, 2);
}
else if (format.FormatName.Contains("DXT"))
{
swizzle = new BlockSwizzle(metainfo.width, metainfo.height);
}
var setting = new ImageSettings
{
Width = metainfo.width,
Height = metainfo.height,
Swizzle = swizzle,
Format = format
};
settings.Add(setting);
var length = metainfo.width * metainfo.height * format.BitDepth / 8;
bmps.Add(Common.Load(br.ReadBytes(length), setting));
}
}
}
