425 lines
19 KiB
C#
425 lines
19 KiB
C#
using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Text;
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using System.Threading.Tasks;
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using Toolbox.Library.IO;
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namespace Toolbox.Library
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{
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public class CTR_3DS
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{
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//From https://github.com/gdkchan/SPICA/blob/42c4181e198b0fd34f0a567345ee7e75b54cb58b/SPICA/PICA/Converters/TextureConverter.cs
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public enum PICASurfaceFormat
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{
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RGBA8,
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RGB8,
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RGBA5551,
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RGB565,
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RGBA4,
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LA8,
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HiLo8,
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L8,
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A8,
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LA4,
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L4,
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A4,
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ETC1,
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ETC1A4
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}
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public static TEX_FORMAT ConvertPICAToGenericFormat(PICASurfaceFormat format)
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{
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switch (format)
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{
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case PICASurfaceFormat.RGB565: return TEX_FORMAT.B5G6R5_UNORM;
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case PICASurfaceFormat.RGB8: return TEX_FORMAT.R8G8_UNORM;
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case PICASurfaceFormat.RGBA8: return TEX_FORMAT.R8G8B8A8_UNORM;
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case PICASurfaceFormat.RGBA5551: return TEX_FORMAT.B5G5R5A1_UNORM;
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case PICASurfaceFormat.RGBA4: return TEX_FORMAT.B4G4R4A4_UNORM;
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case PICASurfaceFormat.LA8: return TEX_FORMAT.LA8;
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case PICASurfaceFormat.HiLo8: return TEX_FORMAT.HIL08;
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case PICASurfaceFormat.L8: return TEX_FORMAT.L8;
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case PICASurfaceFormat.A8: return TEX_FORMAT.A8_UNORM;
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case PICASurfaceFormat.LA4: return TEX_FORMAT.LA4;
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case PICASurfaceFormat.L4: return TEX_FORMAT.L4;
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case PICASurfaceFormat.A4: return TEX_FORMAT.A4;
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case PICASurfaceFormat.ETC1: return TEX_FORMAT.ETC1_UNORM;
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case PICASurfaceFormat.ETC1A4: return TEX_FORMAT.ETC1_A4;
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default:
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throw new NotImplementedException("Unsupported format! " + format);
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}
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}
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public static PICASurfaceFormat ConvertToPICAFormat(TEX_FORMAT GenericFormat)
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{
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switch (GenericFormat)
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{
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case TEX_FORMAT.B5G6R5_UNORM: return PICASurfaceFormat.RGB565;
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case TEX_FORMAT.R8G8_UNORM: return PICASurfaceFormat.RGB8;
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case TEX_FORMAT.R8G8B8A8_UNORM: return PICASurfaceFormat.RGBA8;
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case TEX_FORMAT.B5G5R5A1_UNORM: return PICASurfaceFormat.RGBA5551;
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case TEX_FORMAT.B4G4R4A4_UNORM: return PICASurfaceFormat.RGBA4;
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case TEX_FORMAT.LA8: return PICASurfaceFormat.LA8;
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case TEX_FORMAT.HIL08: return PICASurfaceFormat.HiLo8;
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case TEX_FORMAT.L8: return PICASurfaceFormat.L8;
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case TEX_FORMAT.A8_UNORM: return PICASurfaceFormat.A8;
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case TEX_FORMAT.LA4: return PICASurfaceFormat.LA4;
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case TEX_FORMAT.L4: return PICASurfaceFormat.L4;
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case TEX_FORMAT.A4: return PICASurfaceFormat.A4;
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case TEX_FORMAT.ETC1_UNORM: return PICASurfaceFormat.ETC1;
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case TEX_FORMAT.ETC1_A4: return PICASurfaceFormat.ETC1A4;
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default:
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throw new NotImplementedException("Unsupported format! " + GenericFormat);
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}
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}
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private static int[] FmtBPP = new int[] { 32, 24, 16, 16, 16, 16, 16, 8, 8, 8, 4, 4, 4, 8 };
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public static int[] SwizzleLUT =
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{
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0, 1, 8, 9, 2, 3, 10, 11,
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16, 17, 24, 25, 18, 19, 26, 27,
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4, 5, 12, 13, 6, 7, 14, 15,
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20, 21, 28, 29, 22, 23, 30, 31,
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32, 33, 40, 41, 34, 35, 42, 43,
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48, 49, 56, 57, 50, 51, 58, 59,
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36, 37, 44, 45, 38, 39, 46, 47,
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52, 53, 60, 61, 54, 55, 62, 63
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};
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public static System.Drawing.Bitmap DecodeBlockToBitmap(byte[] Input, int Width, int Height, PICASurfaceFormat picaFormat)
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{
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return BitmapExtension.GetBitmap(DecodeBlock(Input, Width, Height, picaFormat),
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Width, Height, System.Drawing.Imaging.PixelFormat.Format32bppArgb);
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}
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public static byte[] DecodeBlock(byte[] Input, int Width, int Height, TEX_FORMAT Format) {
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return DecodeBlock(Input, Width, Height, ConvertToPICAFormat(Format));
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}
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public static byte[] DecodeBlock(byte[] Input, int Width, int Height, PICASurfaceFormat picaFormat)
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{
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if (picaFormat == PICASurfaceFormat.ETC1 || picaFormat == PICASurfaceFormat.ETC1A4)
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return ETC1.ETC1Decompress(Input, Width, Height, picaFormat == PICASurfaceFormat.ETC1A4);
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byte[] Output = new byte[Width * Height * 4];
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int Increment = FmtBPP[(int)picaFormat] / 8;
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if (Increment == 0) Increment = 1;
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int IOffset = 0;
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for (int TY = 0; TY < Height; TY += 8)
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{
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for (int TX = 0; TX < Width; TX += 8)
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{
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for (int Px = 0; Px < 64; Px++)
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{
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int X = SwizzleLUT[Px] & 7;
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int Y = (SwizzleLUT[Px] - X) >> 3;
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int OOffet = (TX + X + ((Height - 1 - (TY + Y)) * Width)) * 4;
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switch (picaFormat)
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{
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case PICASurfaceFormat.RGBA8:
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Output[OOffet + 0] = Input[IOffset + 3];
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Output[OOffet + 1] = Input[IOffset + 2];
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Output[OOffet + 2] = Input[IOffset + 1];
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Output[OOffet + 3] = Input[IOffset + 0];
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break;
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case PICASurfaceFormat.RGB8:
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Output[OOffet + 0] = Input[IOffset + 2];
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Output[OOffet + 1] = Input[IOffset + 1];
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Output[OOffet + 2] = Input[IOffset + 0];
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Output[OOffet + 3] = 0xff;
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break;
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case PICASurfaceFormat.RGBA5551:
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DecodeRGBA5551(Output, OOffet, GetUShort(Input, IOffset));
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break;
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case PICASurfaceFormat.RGB565:
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DecodeRGB565(Output, OOffet, GetUShort(Input, IOffset));
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break;
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case PICASurfaceFormat.RGBA4:
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DecodeRGBA4(Output, OOffet, GetUShort(Input, IOffset));
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break;
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case PICASurfaceFormat.LA8:
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Output[OOffet + 0] = Input[IOffset + 1];
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Output[OOffet + 1] = Input[IOffset + 1];
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Output[OOffet + 2] = Input[IOffset + 1];
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Output[OOffet + 3] = Input[IOffset + 0];
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break;
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case PICASurfaceFormat.HiLo8:
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Output[OOffet + 0] = Input[IOffset + 1];
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Output[OOffet + 1] = Input[IOffset + 0];
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Output[OOffet + 2] = 0;
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Output[OOffet + 3] = 0xff;
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break;
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case PICASurfaceFormat.L8:
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Output[OOffet + 0] = Input[IOffset];
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Output[OOffet + 1] = Input[IOffset];
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Output[OOffet + 2] = Input[IOffset];
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Output[OOffet + 3] = 0xff;
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break;
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case PICASurfaceFormat.A8:
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Output[OOffet + 0] = 0xff;
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Output[OOffet + 1] = 0xff;
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Output[OOffet + 2] = 0xff;
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Output[OOffet + 3] = Input[IOffset];
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break;
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case PICASurfaceFormat.LA4:
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Output[OOffet + 0] = (byte)((Input[IOffset] >> 4) | (Input[IOffset] & 0xf0));
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Output[OOffet + 1] = (byte)((Input[IOffset] >> 4) | (Input[IOffset] & 0xf0));
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Output[OOffet + 2] = (byte)((Input[IOffset] >> 4) | (Input[IOffset] & 0xf0));
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Output[OOffet + 3] = (byte)((Input[IOffset] << 4) | (Input[IOffset] & 0x0f));
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break;
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case PICASurfaceFormat.L4:
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int L = (Input[IOffset >> 1] >> ((IOffset & 1) << 2)) & 0xf;
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Output[OOffet + 0] = (byte)((L << 4) | L);
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Output[OOffet + 1] = (byte)((L << 4) | L);
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Output[OOffet + 2] = (byte)((L << 4) | L);
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Output[OOffet + 3] = 0xff;
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break;
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case PICASurfaceFormat.A4:
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int A = (Input[IOffset >> 1] >> ((IOffset & 1) << 2)) & 0xf;
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Output[OOffet + 0] = 0xff;
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Output[OOffet + 1] = 0xff;
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Output[OOffet + 2] = 0xff;
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Output[OOffet + 3] = (byte)((A << 4) | A);
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break;
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}
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IOffset += Increment;
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}
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}
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}
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return Output;
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}
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public static byte[] EncodeBlock(byte[] Input, int Width, int Height, TEX_FORMAT Format) {
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return EncodeBlock(Input, Width, Height, ConvertToPICAFormat(Format));
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}
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//Much help from encoding thanks to this
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// https://github.com/Cruel/3dstex/blob/master/src/Encoder.cpp
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public static byte[] EncodeBlock(byte[] Input, int Width, int Height, PICASurfaceFormat PicaFormat)
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{
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int ImageSize = CalculateLength(Width, Height, PicaFormat);
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if (PicaFormat == PICASurfaceFormat.ETC1 ||
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PicaFormat == PICASurfaceFormat.ETC1A4)
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{
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return new byte[ImageSize];
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return ETC1.ETC1Encode(Input, Width, Height, PicaFormat == PICASurfaceFormat.ETC1A4);
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}
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var mem = new System.IO.MemoryStream();
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using (var writer = new FileWriter(mem))
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{
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for (int TY = 0; TY < Height; TY += 8)
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{
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for (int TX = 0; TX < Width; TX += 8)
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{
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for (int Px = 0; Px < 64; Px++)
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{
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int X = SwizzleLUT[Px] & 7;
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int Y = (SwizzleLUT[Px] - X) >> 3;
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int IOffs = (TX + X + ((TY + Y) * Width)) * 4;
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if (PicaFormat == PICASurfaceFormat.RGBA8)
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{
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writer.Write(Input[IOffs + 3]);
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writer.Write(Input[IOffs + 0]);
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writer.Write(Input[IOffs + 1]);
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writer.Write(Input[IOffs + 2]);
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}
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else if (PicaFormat == PICASurfaceFormat.RGB8)
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{
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writer.Write(Input[IOffs + 0]);
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writer.Write(Input[IOffs + 1]);
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writer.Write(Input[IOffs + 2]);
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}
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else if (PicaFormat == PICASurfaceFormat.A8)
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{
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writer.Write(Input[IOffs]);
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}
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else if (PicaFormat == PICASurfaceFormat.L8)
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{
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writer.Write(ConvertBRG8ToL(
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new byte[]
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{
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Input[IOffs + 0],
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Input[IOffs + 1],
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Input[IOffs + 2]
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}));
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}
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else if (PicaFormat == PICASurfaceFormat.LA8)
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{
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writer.Write(Input[IOffs + 3]);
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writer.Write(ConvertBRG8ToL(
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new byte[]
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{
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Input[IOffs + 0],
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Input[IOffs + 1],
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Input[IOffs + 2]
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}));
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}
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else if (PicaFormat == PICASurfaceFormat.RGB565)
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{
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ushort R = (ushort)(Convert8To5(Input[IOffs + 0]));
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ushort G = (ushort)(Convert8To6(Input[IOffs + 1]) << 5);
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ushort B = (ushort)(Convert8To5(Input[IOffs + 2]) << 11);
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writer.Write((ushort)(R | G | B));
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}
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else if (PicaFormat == PICASurfaceFormat.RGBA4)
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{
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ushort R = (ushort)(Convert8To4(Input[IOffs]) << 4);
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ushort G = (ushort)(Convert8To4(Input[IOffs + 1]) << 8);
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ushort B = (ushort)(Convert8To4(Input[IOffs + 2]) << 12);
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ushort A = (ushort)(Convert8To4(Input[IOffs + 3]));
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writer.Write((ushort)(R | G | B | A));
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}
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else if (PicaFormat == PICASurfaceFormat.RGBA5551)
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{
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ushort R = (ushort)(Convert8To5(Input[IOffs + 0]) << 1);
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ushort G = (ushort)(Convert8To5(Input[IOffs + 1]) << 6);
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ushort B = (ushort)(Convert8To5(Input[IOffs + 2]) << 11);
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ushort A = (ushort)(Convert8To1(Input[IOffs + 3]));
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writer.Write((ushort)(R | G | B | A));
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}
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else if (PicaFormat == PICASurfaceFormat.LA4)
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{
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byte A = Input[IOffs + 3];
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byte L = ConvertBRG8ToL(
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new byte[]
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{
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Input[IOffs + 0],
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Input[IOffs + 1],
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Input[IOffs + 2]
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});
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writer.Write((byte)((A >> 4) | (L & 0xF0)));
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}
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else if (PicaFormat == PICASurfaceFormat.L4)
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{
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//Todo this has issues
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byte L1 = ConvertBRG8ToL(
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new byte[]
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{
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Input[IOffs + 0],
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Input[IOffs + 1],
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Input[IOffs + 2]
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});
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writer.Write((byte)(L1 >> 4));
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}
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else if (PicaFormat == PICASurfaceFormat.A4)
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{
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//Todo this has issues
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byte A1 = (byte)(Input[IOffs] >> 4);
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byte A2 = (byte)(Input[IOffs + 3] & 0xF0);
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writer.Write((byte)(A1 | A2));
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}
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else if (PicaFormat == PICASurfaceFormat.HiLo8)
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{
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writer.Write(Input[IOffs]);
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writer.Write(Input[IOffs + 1]);
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}
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}
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}
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}
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}
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byte[] newOutput = mem.ToArray();
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if (newOutput.Length > 0)
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return newOutput;
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else
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return new byte[CalculateLength(Width, Height, PicaFormat)];
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}
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// Convert helpers from Citra Emulator (citra/src/common/color.h)
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private static byte Convert8To1(byte val) { return (byte)(val == 0 ? 0 : 1); }
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private static byte Convert8To4(byte val) { return (byte)(val >> 4); }
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private static byte Convert8To5(byte val) { return (byte)(val >> 3); }
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private static byte Convert8To6(byte val) { return (byte)(val >> 2); }
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private static byte ConvertBRG8ToL(byte[] bytes)
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{
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byte L = (byte)(bytes[0] * 0.0722f);
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L += (byte)(bytes[1] * 0.7152f);
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L += (byte)(bytes[2] * 0.2126f);
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return L;
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}
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private static void DecodeRGB565(byte[] Buffer, int Address, ushort Value)
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{
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int R = ((Value >> 0) & 0x1f) << 3;
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int G = ((Value >> 5) & 0x3f) << 2;
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int B = ((Value >> 11) & 0x1f) << 3;
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SetColor(Buffer, Address, 0xff,
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B | (B >> 5),
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G | (G >> 6),
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R | (R >> 5));
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}
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private static void DecodeRGBA4(byte[] Buffer, int Address, ushort Value)
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{
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int R = (Value >> 4) & 0xf;
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int G = (Value >> 8) & 0xf;
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int B = (Value >> 12) & 0xf;
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SetColor(Buffer, Address, (Value & 0xf) | (Value << 4),
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B | (B << 4),
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G | (G << 4),
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R | (R << 4));
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}
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private static void DecodeRGBA5551(byte[] Buffer, int Address, ushort Value)
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{
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int R = ((Value >> 1) & 0x1f) << 3;
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int G = ((Value >> 6) & 0x1f) << 3;
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int B = ((Value >> 11) & 0x1f) << 3;
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SetColor(Buffer, Address, (Value & 1) * 0xff,
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B | (B >> 5),
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G | (G >> 5),
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R | (R >> 5));
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}
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private static void SetColor(byte[] Buffer, int Address, int A, int B, int G, int R)
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{
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Buffer[Address + 0] = (byte)B;
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Buffer[Address + 1] = (byte)G;
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Buffer[Address + 2] = (byte)R;
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Buffer[Address + 3] = (byte)A;
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}
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private static ushort GetUShort(byte[] Buffer, int Address)
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{
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return (ushort)(
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Buffer[Address + 0] << 0 |
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Buffer[Address + 1] << 8);
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}
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public static int CalculateLength(int Width, int Height, PICASurfaceFormat Format)
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{
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int Length = (Width * Height * FmtBPP[(int)Format]) / 8;
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if ((Length & 0x7f) != 0) {
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Length = (Length & ~0x7f) + 0x80;
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}
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return Length;
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}
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}
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}
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