247 lines
10 KiB
C#
247 lines
10 KiB
C#
using System;
|
|
using System.Collections.Generic;
|
|
using System.Linq;
|
|
using System.Text;
|
|
using System.Threading.Tasks;
|
|
|
|
namespace Switch_Toolbox.Library
|
|
{
|
|
public class CTR_3DS
|
|
{
|
|
//From https://github.com/gdkchan/SPICA/blob/42c4181e198b0fd34f0a567345ee7e75b54cb58b/SPICA/PICA/Converters/TextureConverter.cs
|
|
|
|
public enum PICASurfaceFormat
|
|
{
|
|
RGBA8,
|
|
RGB8,
|
|
RGBA5551,
|
|
RGB565,
|
|
RGBA4,
|
|
LA8,
|
|
HiLo8,
|
|
L8,
|
|
A8,
|
|
LA4,
|
|
L4,
|
|
A4,
|
|
ETC1,
|
|
ETC1A4
|
|
}
|
|
|
|
public static TEX_FORMAT ConvertPICAToGenericFormat(PICASurfaceFormat format)
|
|
{
|
|
switch (format)
|
|
{
|
|
case PICASurfaceFormat.RGB565: return TEX_FORMAT.B5G6R5_UNORM;
|
|
case PICASurfaceFormat.RGB8: return TEX_FORMAT.R8G8_UNORM;
|
|
case PICASurfaceFormat.RGBA5551: return TEX_FORMAT.B5G5R5A1_UNORM;
|
|
case PICASurfaceFormat.RGBA4: return TEX_FORMAT.B4G4R4A4_UNORM;
|
|
case PICASurfaceFormat.LA8: return TEX_FORMAT.LA8;
|
|
case PICASurfaceFormat.HiLo8: return TEX_FORMAT.HIL08;
|
|
case PICASurfaceFormat.L8: return TEX_FORMAT.L8;
|
|
case PICASurfaceFormat.A8: return TEX_FORMAT.A8_UNORM;
|
|
case PICASurfaceFormat.LA4: return TEX_FORMAT.LA4;
|
|
case PICASurfaceFormat.A4: return TEX_FORMAT.A4;
|
|
case PICASurfaceFormat.ETC1: return TEX_FORMAT.ETC1;
|
|
case PICASurfaceFormat.ETC1A4: return TEX_FORMAT.ETC1_A4;
|
|
default:
|
|
throw new NotImplementedException("Unsupported format! " + format);
|
|
}
|
|
}
|
|
|
|
public static PICASurfaceFormat ConvertToPICAFormat(TEX_FORMAT GenericFormat)
|
|
{
|
|
switch (GenericFormat)
|
|
{
|
|
case TEX_FORMAT.B5G6R5_UNORM: return PICASurfaceFormat.RGB565;
|
|
case TEX_FORMAT.R8G8_UNORM: return PICASurfaceFormat.RGB8;
|
|
case TEX_FORMAT.B5G5R5A1_UNORM: return PICASurfaceFormat.RGBA5551;
|
|
case TEX_FORMAT.B4G4R4A4_UNORM: return PICASurfaceFormat.RGBA4;
|
|
case TEX_FORMAT.LA8: return PICASurfaceFormat.LA8;
|
|
case TEX_FORMAT.HIL08: return PICASurfaceFormat.HiLo8;
|
|
case TEX_FORMAT.L8: return PICASurfaceFormat.L8;
|
|
case TEX_FORMAT.A8_UNORM: return PICASurfaceFormat.A8;
|
|
case TEX_FORMAT.LA4: return PICASurfaceFormat.LA4;
|
|
case TEX_FORMAT.A4: return PICASurfaceFormat.A4;
|
|
case TEX_FORMAT.ETC1: return PICASurfaceFormat.ETC1;
|
|
case TEX_FORMAT.ETC1_A4: return PICASurfaceFormat.ETC1A4;
|
|
default:
|
|
throw new NotImplementedException("Unsupported format! " + GenericFormat);
|
|
}
|
|
}
|
|
|
|
private static int[] FmtBPP = new int[] { 32, 24, 16, 16, 16, 16, 16, 8, 8, 8, 4, 4, 4, 8 };
|
|
|
|
public static int[] SwizzleLUT =
|
|
{
|
|
0, 1, 8, 9, 2, 3, 10, 11,
|
|
16, 17, 24, 25, 18, 19, 26, 27,
|
|
4, 5, 12, 13, 6, 7, 14, 15,
|
|
20, 21, 28, 29, 22, 23, 30, 31,
|
|
32, 33, 40, 41, 34, 35, 42, 43,
|
|
48, 49, 56, 57, 50, 51, 58, 59,
|
|
36, 37, 44, 45, 38, 39, 46, 47,
|
|
52, 53, 60, 61, 54, 55, 62, 63
|
|
};
|
|
|
|
public static byte[] DecodeBlock(byte[] Input, int Width, int Height, TEX_FORMAT Format)
|
|
{
|
|
if (Format == TEX_FORMAT.ETC1 || Format == TEX_FORMAT.ETC1_A4)
|
|
return ETC1.ETC1Decompress(Input, Width, Height, Format == TEX_FORMAT.ETC1_A4);
|
|
|
|
byte[] Output = new byte[Width * Height * 4];
|
|
|
|
int Increment = FmtBPP[(int)ConvertToPICAFormat(Format)] / 8;
|
|
if (Increment == 0) Increment = 1;
|
|
|
|
int IOffset = 0;
|
|
|
|
for (int TY = 0; TY < Height; TY += 8)
|
|
{
|
|
for (int TX = 0; TX < Width; TX += 8)
|
|
{
|
|
for (int Px = 0; Px < 64; Px++)
|
|
{
|
|
int X = SwizzleLUT[Px] & 7;
|
|
int Y = (SwizzleLUT[Px] - X) >> 3;
|
|
|
|
int OOffet = (TX + X + ((Height - 1 - (TY + Y)) * Width)) * 4;
|
|
|
|
switch (Format)
|
|
{
|
|
case TEX_FORMAT.R8G8_UNORM:
|
|
Output[OOffet + 0] = Input[IOffset + 3];
|
|
Output[OOffet + 1] = Input[IOffset + 2];
|
|
Output[OOffet + 2] = Input[IOffset + 1];
|
|
Output[OOffet + 3] = Input[IOffset + 0];
|
|
break;
|
|
case TEX_FORMAT.R8G8B8A8_UNORM:
|
|
Output[OOffet + 0] = Input[IOffset + 2];
|
|
Output[OOffet + 1] = Input[IOffset + 1];
|
|
Output[OOffet + 2] = Input[IOffset + 0];
|
|
Output[OOffet + 3] = 0xff;
|
|
break;
|
|
case TEX_FORMAT.B5G5R5A1_UNORM:
|
|
DecodeRGBA5551(Output, OOffet, GetUShort(Input, IOffset));
|
|
break;
|
|
case TEX_FORMAT.B5G6R5_UNORM:
|
|
DecodeRGB565(Output, OOffet, GetUShort(Input, IOffset));
|
|
break;
|
|
case TEX_FORMAT.B4G4R4A4_UNORM:
|
|
DecodeRGBA4(Output, OOffet, GetUShort(Input, IOffset));
|
|
break;
|
|
case TEX_FORMAT.LA8:
|
|
Output[OOffet + 0] = Input[IOffset + 1];
|
|
Output[OOffet + 1] = Input[IOffset + 1];
|
|
Output[OOffet + 2] = Input[IOffset + 1];
|
|
Output[OOffet + 3] = Input[IOffset + 0];
|
|
break;
|
|
case TEX_FORMAT.HIL08:
|
|
Output[OOffet + 0] = Input[IOffset + 1];
|
|
Output[OOffet + 1] = Input[IOffset + 0];
|
|
Output[OOffet + 2] = 0;
|
|
Output[OOffet + 3] = 0xff;
|
|
break;
|
|
case TEX_FORMAT.L8:
|
|
Output[OOffet + 0] = Input[IOffset];
|
|
Output[OOffet + 1] = Input[IOffset];
|
|
Output[OOffet + 2] = Input[IOffset];
|
|
Output[OOffet + 3] = 0xff;
|
|
break;
|
|
|
|
case TEX_FORMAT.A8_UNORM:
|
|
Output[OOffet + 0] = 0xff;
|
|
Output[OOffet + 1] = 0xff;
|
|
Output[OOffet + 2] = 0xff;
|
|
Output[OOffet + 3] = Input[IOffset];
|
|
break;
|
|
case TEX_FORMAT.LA4:
|
|
Output[OOffet + 0] = (byte)((Input[IOffset] >> 4) | (Input[IOffset] & 0xf0));
|
|
Output[OOffet + 1] = (byte)((Input[IOffset] >> 4) | (Input[IOffset] & 0xf0));
|
|
Output[OOffet + 2] = (byte)((Input[IOffset] >> 4) | (Input[IOffset] & 0xf0));
|
|
Output[OOffet + 3] = (byte)((Input[IOffset] << 4) | (Input[IOffset] & 0x0f));
|
|
break;
|
|
case TEX_FORMAT.L4:
|
|
int L = (Input[IOffset >> 1] >> ((IOffset & 1) << 2)) & 0xf;
|
|
Output[OOffet + 0] = (byte)((L << 4) | L);
|
|
Output[OOffet + 1] = (byte)((L << 4) | L);
|
|
Output[OOffet + 2] = (byte)((L << 4) | L);
|
|
Output[OOffet + 3] = 0xff;
|
|
break;
|
|
case TEX_FORMAT.A4:
|
|
int A = (Input[IOffset >> 1] >> ((IOffset & 1) << 2)) & 0xf;
|
|
|
|
Output[OOffet + 0] = 0xff;
|
|
Output[OOffet + 1] = 0xff;
|
|
Output[OOffet + 2] = 0xff;
|
|
Output[OOffet + 3] = (byte)((A << 4) | A);
|
|
|
|
break;
|
|
}
|
|
|
|
Output[OOffet + 0] = 0xff;
|
|
Output[OOffet + 1] = 0xff;
|
|
Output[OOffet + 2] = 0xff;
|
|
Output[OOffet + 3] = Input[IOffset];
|
|
|
|
IOffset += Increment;
|
|
}
|
|
}
|
|
}
|
|
|
|
return Output;
|
|
}
|
|
|
|
private static void DecodeRGB565(byte[] Buffer, int Address, ushort Value)
|
|
{
|
|
int R = ((Value >> 0) & 0x1f) << 3;
|
|
int G = ((Value >> 5) & 0x3f) << 2;
|
|
int B = ((Value >> 11) & 0x1f) << 3;
|
|
|
|
SetColor(Buffer, Address, 0xff,
|
|
B | (B >> 5),
|
|
G | (G >> 6),
|
|
R | (R >> 5));
|
|
}
|
|
|
|
private static void DecodeRGBA4(byte[] Buffer, int Address, ushort Value)
|
|
{
|
|
int R = (Value >> 4) & 0xf;
|
|
int G = (Value >> 8) & 0xf;
|
|
int B = (Value >> 12) & 0xf;
|
|
|
|
SetColor(Buffer, Address, (Value & 0xf) | (Value << 4),
|
|
B | (B << 4),
|
|
G | (G << 4),
|
|
R | (R << 4));
|
|
}
|
|
|
|
private static void DecodeRGBA5551(byte[] Buffer, int Address, ushort Value)
|
|
{
|
|
int R = ((Value >> 1) & 0x1f) << 3;
|
|
int G = ((Value >> 6) & 0x1f) << 3;
|
|
int B = ((Value >> 11) & 0x1f) << 3;
|
|
|
|
SetColor(Buffer, Address, (Value & 1) * 0xff,
|
|
B | (B >> 5),
|
|
G | (G >> 5),
|
|
R | (R >> 5));
|
|
}
|
|
|
|
private static void SetColor(byte[] Buffer, int Address, int A, int B, int G, int R)
|
|
{
|
|
Buffer[Address + 0] = (byte)B;
|
|
Buffer[Address + 1] = (byte)G;
|
|
Buffer[Address + 2] = (byte)R;
|
|
Buffer[Address + 3] = (byte)A;
|
|
}
|
|
|
|
private static ushort GetUShort(byte[] Buffer, int Address)
|
|
{
|
|
return (ushort)(
|
|
Buffer[Address + 0] << 0 |
|
|
Buffer[Address + 1] << 8);
|
|
}
|
|
}
|
|
}
|