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mirror of synced 2024-12-12 15:51:16 +01:00
Switch-Toolbox/Switch_Toolbox_Library/FileFormats/DDSCompressor.cs

739 lines
27 KiB
C#

using System;
using System.Diagnostics;
using System.Drawing;
using Switch_Toolbox.Library;
using System.Runtime.InteropServices;
using DirectXTexNet;
namespace Switch_Toolbox.Library
{
public class DDSCompressor
{
//Huge thanks to gdkchan and AbooodXD for the method of decomp BC5/BC4.
//Todo. Add these to DDS code and add in methods to compress and decode more formats
//BC7 also needs to be decompressed properly since OpenTK can't decompress those
//BC4 actually breaks a bit with artifacts so i'll need to go back and fix
private static byte[] BCnDecodeTile(byte[] Input, int Offset, bool IsBC1)
{
Color[] CLUT = new Color[4];
int c0 = Get16(Input, Offset + 0);
int c1 = Get16(Input, Offset + 2);
CLUT[0] = DecodeRGB565(c0);
CLUT[1] = DecodeRGB565(c1);
CLUT[2] = CalculateCLUT2(CLUT[0], CLUT[1], c0, c1, IsBC1);
CLUT[3] = CalculateCLUT3(CLUT[0], CLUT[1], c0, c1, IsBC1);
int Indices = Get32(Input, Offset + 4);
int IdxShift = 0;
byte[] Output = new byte[4 * 4 * 4];
int OOffset = 0;
for (int TY = 0; TY < 4; TY++)
{
for (int TX = 0; TX < 4; TX++)
{
int Idx = (Indices >> IdxShift) & 3;
IdxShift += 2;
Color Pixel = CLUT[Idx];
Output[OOffset + 0] = Pixel.B;
Output[OOffset + 1] = Pixel.G;
Output[OOffset + 2] = Pixel.R;
Output[OOffset + 3] = Pixel.A;
OOffset += 4;
}
}
return Output;
}
private static Color DecodeRGB565(int Value)
{
int B = ((Value >> 0) & 0x1f) << 3;
int G = ((Value >> 5) & 0x3f) << 2;
int R = ((Value >> 11) & 0x1f) << 3;
return Color.FromArgb(
R | (R >> 5),
G | (G >> 6),
B | (B >> 5));
}
private static Color CalculateCLUT2(Color C0, Color C1, int c0, int c1, bool IsBC1)
{
if (c0 > c1 || !IsBC1)
{
return Color.FromArgb(
(2 * C0.R + C1.R) / 3,
(2 * C0.G + C1.G) / 3,
(2 * C0.B + C1.B) / 3);
}
else
{
return Color.FromArgb(
(C0.R + C1.R) / 2,
(C0.G + C1.G) / 2,
(C0.B + C1.B) / 2);
}
}
private static Color CalculateCLUT3(Color C0, Color C1, int c0, int c1, bool IsBC1)
{
if (c0 > c1 || !IsBC1)
{
return
Color.FromArgb(
(2 * C1.R + C0.R) / 3,
(2 * C1.G + C0.G) / 3,
(2 * C1.B + C0.B) / 3);
}
return Color.Transparent;
}
public static Bitmap DecompressBC1(Byte[] data, int width, int height, bool IsSRGB)
{
int W = (width + 3) / 4;
int H = (height + 3) / 4;
byte[] Output = new byte[W * H * 64];
for (int Y = 0; Y < H; Y++)
{
for (int X = 0; X < W; X++)
{
int IOffs = (Y * W + X) * 8;
byte[] Tile = BCnDecodeTile(data, IOffs, true);
int TOffset = 0;
for (int TY = 0; TY < 4; TY++)
{
for (int TX = 0; TX < 4; TX++)
{
int OOffset = (X * 4 + TX + (Y * 4 + TY) * W * 4) * 4;
Output[OOffset + 0] = Tile[TOffset + 0];
Output[OOffset + 1] = Tile[TOffset + 1];
Output[OOffset + 2] = Tile[TOffset + 2];
Output[OOffset + 3] = Tile[TOffset + 3];
TOffset += 4;
}
}
}
}
return BitmapExtension.GetBitmap(Output, W * 4, H * 4);
}
public static Bitmap DecompressBC3(Byte[] data, int width, int height, bool IsSRGB)
{
int W = (width + 3) / 4;
int H = (height + 3) / 4;
byte[] Output = new byte[W * H * 64];
for (int Y = 0; Y < H; Y++)
{
for (int X = 0; X < W; X++)
{
int IOffs = (Y * W + X) * 16;
byte[] Tile = BCnDecodeTile(data, IOffs + 8, false);
byte[] Alpha = new byte[8];
Alpha[0] = data[IOffs + 0];
Alpha[1] = data[IOffs + 1];
CalculateBC3Alpha(Alpha);
int AlphaLow = Get32(data, IOffs + 2);
int AlphaHigh = Get16(data, IOffs + 6);
ulong AlphaCh = (uint)AlphaLow | (ulong)AlphaHigh << 32;
int TOffset = 0;
for (int TY = 0; TY < 4; TY++)
{
for (int TX = 0; TX < 4; TX++)
{
int OOffset = (X * 4 + TX + (Y * 4 + TY) * W * 4) * 4;
byte AlphaPx = Alpha[(AlphaCh >> (TY * 12 + TX * 3)) & 7];
Output[OOffset + 0] = Tile[TOffset + 0];
Output[OOffset + 1] = Tile[TOffset + 1];
Output[OOffset + 2] = Tile[TOffset + 2];
Output[OOffset + 3] = AlphaPx;
TOffset += 4;
}
}
}
}
return BitmapExtension.GetBitmap(Output, W * 4, H * 4);
}
public static Bitmap DecompressBC4(Byte[] data, int width, int height, bool IsSNORM)
{
int W = (width + 3) / 4;
int H = (height + 3) / 4;
byte[] Output = new byte[W * H * 64];
for (int Y = 0; Y < H; Y++)
{
for (int X = 0; X < W; X++)
{
int IOffs = (Y * W + X) * 8;
byte[] Red = new byte[8];
Red[0] = data[IOffs + 0];
Red[1] = data[IOffs + 1];
CalculateBC3Alpha(Red);
int RedLow = Get32(data, IOffs + 2);
int RedHigh = Get16(data, IOffs + 6);
ulong RedCh = (uint)RedLow | (ulong)RedHigh << 32;
int TOffset = 0;
int TW = Math.Min(width - X * 4, 4);
int TH = Math.Min(height - Y * 4, 4);
for (int TY = 0; TY < 4; TY++)
{
for (int TX = 0; TX < 4; TX++)
{
int OOffset = (X * 4 + TX + (Y * 4 + TY) * W * 4) * 4;
byte RedPx = Red[(RedCh >> (TY * 12 + TX * 3)) & 7];
Output[OOffset + 0] = RedPx;
Output[OOffset + 1] = RedPx;
Output[OOffset + 2] = RedPx;
Output[OOffset + 3] = 255;
TOffset += 4;
}
}
}
}
return BitmapExtension.GetBitmap(Output, W * 4, H * 4);
}
public static byte[] DecompressBC5(Byte[] data, int width, int height, bool IsSNORM, bool IsByteArray)
{
int W = (width + 3) / 4;
int H = (height + 3) / 4;
byte[] Output = new byte[W * H * 64];
for (int Y = 0; Y < H; Y++)
{
for (int X = 0; X < W; X++)
{
int IOffs = (Y * W + X) * 16;
byte[] Red = new byte[8];
byte[] Green = new byte[8];
Red[0] = data[IOffs + 0];
Red[1] = data[IOffs + 1];
Green[0] = data[IOffs + 8];
Green[1] = data[IOffs + 9];
if (IsSNORM == true)
{
CalculateBC3AlphaS(Red);
CalculateBC3AlphaS(Green);
}
else
{
CalculateBC3Alpha(Red);
CalculateBC3Alpha(Green);
}
int RedLow = Get32(data, IOffs + 2);
int RedHigh = Get16(data, IOffs + 6);
int GreenLow = Get32(data, IOffs + 10);
int GreenHigh = Get16(data, IOffs + 14);
ulong RedCh = (uint)RedLow | (ulong)RedHigh << 32;
ulong GreenCh = (uint)GreenLow | (ulong)GreenHigh << 32;
int TW = Math.Min(width - X * 4, 4);
int TH = Math.Min(height - Y * 4, 4);
if (IsSNORM == true)
{
for (int TY = 0; TY < TH; TY++)
{
for (int TX = 0; TX < TW; TX++)
{
int Shift = TY * 12 + TX * 3;
int OOffset = ((Y * 4 + TY) * width + (X * 4 + TX)) * 4;
byte RedPx = Red[(RedCh >> Shift) & 7];
byte GreenPx = Green[(GreenCh >> Shift) & 7];
if (IsSNORM == true)
{
RedPx += 0x80;
GreenPx += 0x80;
}
float NX = (RedPx / 255f) * 2 - 1;
float NY = (GreenPx / 255f) * 2 - 1;
float NZ = (float)Math.Sqrt(1 - (NX * NX + NY * NY));
Output[OOffset + 0] = Clamp((NX + 1) * 0.5f);
Output[OOffset + 1] = Clamp((NY + 1) * 0.5f);
Output[OOffset + 2] = Clamp((NZ + 1) * 0.5f);
Output[OOffset + 3] = 0xff;
}
}
}
else
{
for (int TY = 0; TY < TH; TY++)
{
for (int TX = 0; TX < TW; TX++)
{
int Shift = TY * 12 + TX * 3;
int OOffset = ((Y * 4 + TY) * width + (X * 4 + TX)) * 4;
byte RedPx = Red[(RedCh >> Shift) & 7];
byte GreenPx = Green[(GreenCh >> Shift) & 7];
Output[OOffset + 0] = RedPx;
Output[OOffset + 1] = GreenPx;
Output[OOffset + 2] = 255;
Output[OOffset + 3] = 255;
}
}
}
}
}
return Output;
}
public static Bitmap DecompressBC5(Byte[] data, int width, int height, bool IsSNORM)
{
int W = (width + 3) / 4;
int H = (height + 3) / 4;
byte[] Output = new byte[W * H * 64];
for (int Y = 0; Y < H; Y++)
{
for (int X = 0; X < W; X++)
{
int IOffs = (Y * W + X) * 16;
byte[] Red = new byte[8];
byte[] Green = new byte[8];
Red[0] = data[IOffs + 0];
Red[1] = data[IOffs + 1];
Green[0] = data[IOffs + 8];
Green[1] = data[IOffs + 9];
if (IsSNORM == true)
{
CalculateBC3AlphaS(Red);
CalculateBC3AlphaS(Green);
}
else
{
CalculateBC3Alpha(Red);
CalculateBC3Alpha(Green);
}
int RedLow = Get32(data, IOffs + 2);
int RedHigh = Get16(data, IOffs + 6);
int GreenLow = Get32(data, IOffs + 10);
int GreenHigh = Get16(data, IOffs + 14);
ulong RedCh = (uint)RedLow | (ulong)RedHigh << 32;
ulong GreenCh = (uint)GreenLow | (ulong)GreenHigh << 32;
int TW = Math.Min(width - X * 4, 4);
int TH = Math.Min(height - Y * 4, 4);
if (IsSNORM == true)
{
for (int TY = 0; TY < TH; TY++)
{
for (int TX = 0; TX < TW; TX++)
{
int Shift = TY * 12 + TX * 3;
int OOffset = ((Y * 4 + TY) * width + (X * 4 + TX)) * 4;
byte RedPx = Red[(RedCh >> Shift) & 7];
byte GreenPx = Green[(GreenCh >> Shift) & 7];
if (IsSNORM == true)
{
RedPx += 0x80;
GreenPx += 0x80;
}
float NX = (RedPx / 255f) * 2 - 1;
float NY = (GreenPx / 255f) * 2 - 1;
float NZ = (float)Math.Sqrt(1 - (NX * NX + NY * NY));
Output[OOffset + 0] = Clamp((NZ + 1) * 0.5f);
Output[OOffset + 1] = Clamp((NY + 1) * 0.5f);
Output[OOffset + 2] = Clamp((NX + 1) * 0.5f);
Output[OOffset + 3] = 0xff;
}
}
}
else
{
for (int TY = 0; TY < TH; TY++)
{
for (int TX = 0; TX < TW; TX++)
{
int Shift = TY * 12 + TX * 3;
int OOffset = ((Y * 4 + TY) * width + (X * 4 + TX)) * 4;
byte RedPx = Red[(RedCh >> Shift) & 7];
byte GreenPx = Green[(GreenCh >> Shift) & 7];
Output[OOffset + 0] = 255;
Output[OOffset + 1] = GreenPx;
Output[OOffset + 2] = RedPx;
Output[OOffset + 3] = 255;
}
}
}
}
}
return BitmapExtension.GetBitmap(Output, W * 4, H * 4);
}
public static unsafe byte[] CompressBlock(Byte[] data, int width, int height, DDS.DXGI_FORMAT format, float AlphaRef = 0.5f, STCompressionMode CompressionMode = STCompressionMode.Normal)
{
long inputRowPitch = width * 4;
long inputSlicePitch = width * height * 4;
if (data.Length == inputSlicePitch)
{
byte* buf;
buf = (byte*)Marshal.AllocHGlobal((int)inputSlicePitch);
Marshal.Copy(data, 0, (IntPtr)buf, (int)inputSlicePitch);
DirectXTexNet.Image inputImage = new DirectXTexNet.Image(
width, height, DXGI_FORMAT.R8G8B8A8_UNORM, inputRowPitch,
inputSlicePitch, (IntPtr)buf, null);
TexMetadata texMetadata = new TexMetadata(width, height, 1, 1, 1, 0, 0,
DXGI_FORMAT.R8G8B8A8_UNORM, TEX_DIMENSION.TEXTURE2D);
ScratchImage scratchImage = TexHelper.Instance.InitializeTemporary(
new DirectXTexNet.Image[] { inputImage }, texMetadata, null);
var compFlags = TEX_COMPRESS_FLAGS.DEFAULT;
// compFlags |= TEX_COMPRESS_FLAGS.PARALLEL;
if (format == DDS.DXGI_FORMAT.DXGI_FORMAT_BC7_UNORM ||
format == DDS.DXGI_FORMAT.DXGI_FORMAT_BC7_UNORM_SRGB ||
format == DDS.DXGI_FORMAT.DXGI_FORMAT_BC7_TYPELESS)
{
if (CompressionMode == STCompressionMode.Fast)
compFlags |= TEX_COMPRESS_FLAGS.BC7_QUICK;
}
if (format == DDS.DXGI_FORMAT.DXGI_FORMAT_BC1_UNORM_SRGB ||
format == DDS.DXGI_FORMAT.DXGI_FORMAT_BC1_UNORM_SRGB ||
format == DDS.DXGI_FORMAT.DXGI_FORMAT_BC2_UNORM_SRGB ||
format == DDS.DXGI_FORMAT.DXGI_FORMAT_BC3_UNORM_SRGB ||
format == DDS.DXGI_FORMAT.DXGI_FORMAT_BC7_UNORM_SRGB)
{
compFlags |= TEX_COMPRESS_FLAGS.SRGB;
}
using (var comp = scratchImage.Compress((DXGI_FORMAT)format, compFlags, 0.5f))
{
long outRowPitch;
long outSlicePitch;
TexHelper.Instance.ComputePitch((DXGI_FORMAT)format, width, height, out outRowPitch, out outSlicePitch, CP_FLAGS.NONE);
byte[] result = new byte[outSlicePitch];
Marshal.Copy(comp.GetImage(0).Pixels, result, 0, result.Length);
inputImage = null;
scratchImage.Dispose();
return result;
}
}
return null;
}
public static unsafe byte[] DecompressBlock(Byte[] data, int width, int height, DDS.DXGI_FORMAT format)
{
Console.WriteLine(format);
Console.WriteLine(data.Length);
Console.WriteLine(width);
Console.WriteLine(height);
long inputRowPitch;
long inputSlicePitch;
TexHelper.Instance.ComputePitch((DXGI_FORMAT)format, width, height, out inputRowPitch, out inputSlicePitch, CP_FLAGS.NONE);
DXGI_FORMAT FormatDecompressed;
if (format.ToString().Contains("SRGB"))
FormatDecompressed = DXGI_FORMAT.R8G8B8A8_UNORM_SRGB;
else
FormatDecompressed = DXGI_FORMAT.R8G8B8A8_UNORM;
if (data.Length == inputSlicePitch)
{
byte* buf;
buf = (byte*)Marshal.AllocHGlobal((int)inputSlicePitch);
Marshal.Copy(data, 0, (IntPtr)buf, (int)inputSlicePitch);
DirectXTexNet.Image inputImage = new DirectXTexNet.Image(
width, height, (DXGI_FORMAT)format, inputRowPitch,
inputSlicePitch, (IntPtr)buf, null);
TexMetadata texMetadata = new TexMetadata(width, height, 1, 1, 1, 0, 0,
(DXGI_FORMAT)format, TEX_DIMENSION.TEXTURE2D);
ScratchImage scratchImage = TexHelper.Instance.InitializeTemporary(
new DirectXTexNet.Image[] { inputImage }, texMetadata, null);
using (var decomp = scratchImage.Decompress(0, FormatDecompressed))
{
byte[] result = new byte[4 * width * height];
Marshal.Copy(decomp.GetImage(0).Pixels, result, 0, result.Length);
inputImage = null;
scratchImage.Dispose();
return result;
}
}
return null;
}
public static unsafe byte[] DecodePixelBlock(Byte[] data, int width, int height, DDS.DXGI_FORMAT format, float AlphaRef = 0.5f)
{
if (format == DDS.DXGI_FORMAT.DXGI_FORMAT_R8G8B8A8_UNORM)
{
byte[] result = new byte[data.Length];
Array.Copy(data, result, data.Length);
return result;
}
return Convert(data, width, height, (DXGI_FORMAT)format, DXGI_FORMAT.R8G8B8A8_UNORM);
}
public static unsafe byte[] EncodePixelBlock(Byte[] data, int width, int height, DDS.DXGI_FORMAT format, float AlphaRef = 0.5f)
{
if (format == DDS.DXGI_FORMAT.DXGI_FORMAT_R8G8B8A8_UNORM)
return data;
return Convert(data, width, height, DXGI_FORMAT.R8G8B8A8_UNORM, (DXGI_FORMAT)format);
}
public static unsafe byte[] Convert(Byte[] data, int width, int height, DXGI_FORMAT inputFormat, DXGI_FORMAT outputFormat)
{
long inputRowPitch;
long inputSlicePitch;
TexHelper.Instance.ComputePitch(inputFormat, width, height, out inputRowPitch, out inputSlicePitch, CP_FLAGS.NONE);
if (data.Length == inputSlicePitch)
{
byte* buf;
buf = (byte*)Marshal.AllocHGlobal((int)inputSlicePitch);
Marshal.Copy(data, 0, (IntPtr)buf, (int)inputSlicePitch);
DirectXTexNet.Image inputImage = new DirectXTexNet.Image(
width, height, inputFormat, inputRowPitch,
inputSlicePitch, (IntPtr)buf, null);
TexMetadata texMetadata = new TexMetadata(width, height, 1, 1, 1, 0, 0,
inputFormat, TEX_DIMENSION.TEXTURE2D);
ScratchImage scratchImage = TexHelper.Instance.InitializeTemporary(
new DirectXTexNet.Image[] { inputImage }, texMetadata, null);
var convFlags = TEX_FILTER_FLAGS.DEFAULT;
if (inputFormat == DXGI_FORMAT.B8G8R8A8_UNORM_SRGB ||
inputFormat == DXGI_FORMAT.B8G8R8X8_UNORM_SRGB ||
inputFormat == DXGI_FORMAT.R8G8B8A8_UNORM_SRGB)
{
convFlags |= TEX_FILTER_FLAGS.SRGB;
}
using (var decomp = scratchImage.Convert(0, outputFormat, convFlags, 0.5f))
{
long outRowPitch;
long outSlicePitch;
TexHelper.Instance.ComputePitch(outputFormat, width, height, out outRowPitch, out outSlicePitch, CP_FLAGS.NONE);
byte[] result = new byte[outSlicePitch];
Marshal.Copy(decomp.GetImage(0).Pixels, result, 0, result.Length);
inputImage = null;
scratchImage.Dispose();
return result;
}
}
return null;
}
/* public static byte[] CompressBlock(Byte[] data, int width, int height, DDS.DXGI_FORMAT format, float AlphaRef)
{
return DirectXTex.ImageCompressor.Compress(data, width, height, (int)format, AlphaRef);
}*/
public static Bitmap DecompressBlock(Byte[] data, int width, int height, DDS.DXGI_FORMAT format, bool GetBitmap)
{
byte[] output = null;
switch (format)
{
case DDS.DXGI_FORMAT.DXGI_FORMAT_BC1_UNORM:
case DDS.DXGI_FORMAT.DXGI_FORMAT_BC1_UNORM_SRGB:
output = CSharpImageLibrary.DDS.Dxt.DecompressDxt1(data, (int)width, (int)height);
break;
case DDS.DXGI_FORMAT.DXGI_FORMAT_BC3_UNORM:
case DDS.DXGI_FORMAT.DXGI_FORMAT_BC3_UNORM_SRGB:
output = CSharpImageLibrary.DDS.Dxt.DecompressDxt5(data, (int)width, (int)height);
break;
case DDS.DXGI_FORMAT.DXGI_FORMAT_BC4_UNORM:
case DDS.DXGI_FORMAT.DXGI_FORMAT_BC4_SNORM:
output = CSharpImageLibrary.DDS.Dxt.DecompressDxt4(data, (int)width, (int)height);
break;
case DDS.DXGI_FORMAT.DXGI_FORMAT_BC5_UNORM:
case DDS.DXGI_FORMAT.DXGI_FORMAT_BC5_SNORM:
output = CSharpImageLibrary.DDS.Dxt.DecompressDxt4(data, (int)width, (int)height);
break;
case DDS.DXGI_FORMAT.DXGI_FORMAT_BC7_UNORM:
case DDS.DXGI_FORMAT.DXGI_FORMAT_BC7_UNORM_SRGB:
output = CSharpImageLibrary.DDS.Dxt.DecompressBc7(data, (int)width, (int)height);
break;
default:
output = DecompressBlock(data, width, height, format);
break;
}
return BitmapExtension.GetBitmap(output, (int)width, (int)height);
}
public static int Get16(byte[] Data, int Address)
{
return
Data[Address + 0] << 0 |
Data[Address + 1] << 8;
}
public static int Get32(byte[] Data, int Address)
{
return
Data[Address + 0] << 0 |
Data[Address + 1] << 8 |
Data[Address + 2] << 16 |
Data[Address + 3] << 24;
}
private static byte Clamp(float Value)
{
if (Value > 1)
{
return 0xff;
}
else if (Value < 0)
{
return 0;
}
else
{
return (byte)(Value * 0xff);
}
}
private static void CalculateBC3Alpha(byte[] Alpha)
{
for (int i = 2; i < 8; i++)
{
if (Alpha[0] > Alpha[1])
{
Alpha[i] = (byte)(((8 - i) * Alpha[0] + (i - 1) * Alpha[1]) / 7);
}
else if (i < 6)
{
Alpha[i] = (byte)(((6 - i) * Alpha[0] + (i - 1) * Alpha[1]) / 7);
}
else if (i == 6)
{
Alpha[i] = 0;
}
else /* i == 7 */
{
Alpha[i] = 0xff;
}
}
}
private static void CalculateBC3AlphaS(byte[] Alpha)
{
for (int i = 2; i < 8; i++)
{
if ((sbyte)Alpha[0] > (sbyte)Alpha[1])
{
Alpha[i] = (byte)(((8 - i) * (sbyte)Alpha[0] + (i - 1) * (sbyte)Alpha[1]) / 7);
}
else if (i < 6)
{
Alpha[i] = (byte)(((6 - i) * (sbyte)Alpha[0] + (i - 1) * (sbyte)Alpha[1]) / 7);
}
else if (i == 6)
{
Alpha[i] = 0x80;
}
else /* i == 7 */
{
Alpha[i] = 0x7f;
}
}
}
public static byte[] DecodeBC7(int X, int Y, int block)
{
byte[] result = null;
//Alright so BC7 decompression as multple modes
return result;
}
}
}