public static void EncodePixel(this PsuTexturePixelFormat format, byte[] sourcePixels, int sourceAddress, byte[] destinationPixels, int destinationAddress)
{
switch (format)
{
//These are direct copies.
case PsuTexturePixelFormat.Palette8:
case PsuTexturePixelFormat.Argb1555:
case PsuTexturePixelFormat.Rgb555:
case PsuTexturePixelFormat.Rgb565:
case PsuTexturePixelFormat.Argb8888:
Array.Copy(sourcePixels, sourceAddress * format.GetSourceBytesPerPixel(), destinationPixels, destinationAddress * format.GetDestinationBytesPerPixel(), format.GetSourceBytesPerPixel());
break;
//Promote all 4 colors from 4 to 8 bits.
case PsuTexturePixelFormat.Argb4444:
byte a = sourcePixels[sourceAddress * 4 + 3];
byte r = sourcePixels[sourceAddress * 4 + 2];
byte g = sourcePixels[sourceAddress * 4 + 1];
byte b = sourcePixels[sourceAddress * 4];
byte ar = (byte)((a & 0xF0) | (r >> 4));
byte gb = (byte)((g & 0xF0) | (b >> 4));
destinationPixels[destinationAddress * 2] = gb;
destinationPixels[destinationAddress * 2 + 1] = ar;
break;
//Copy 3 bytes, discard the next, copy the result into 3.
case PsuTexturePixelFormat.Xrgb8888:
destinationPixels[destinationAddress * 4] = sourcePixels[sourceAddress * 3 + 0]; // B
destinationPixels[destinationAddress * 4 + 1] = sourcePixels[sourceAddress * 3 + 1]; // G
destinationPixels[destinationAddress * 4 + 2] = sourcePixels[sourceAddress * 3 + 2]; // R
break;
//Promote first byte to upper byte of destination
case PsuTexturePixelFormat.Ax88:
destinationPixels[destinationAddress * 2] = sourcePixels[sourceAddress * 2 + 1];
break;
//Promote all 3 colors to 8 bits
case PsuTexturePixelFormat.Rgb655:
b = sourcePixels[sourceAddress * 3];
g = sourcePixels[sourceAddress * 3 + 1];
r = sourcePixels[sourceAddress * 3 + 2];
byte lowerByte = (byte)((b >> 5) | ((g & 0x38) << 2));
byte upperByte = (byte)((r & 0xFC) | ((g & 0xC0) >> 6));
destinationPixels[destinationAddress * 2] = lowerByte;
destinationPixels[destinationAddress * 2 + 1] = upperByte;
break;
//Copy values, add dummy third value
case PsuTexturePixelFormat.Gb88:
g = sourcePixels[sourceAddress * 3 + 1];
b = sourcePixels[sourceAddress * 3 + 0];
destinationPixels[destinationAddress * 2] = b;
destinationPixels[destinationAddress * 2 + 1] = g;
break;
case PsuTexturePixelFormat.Rb88:
r = sourcePixels[sourceAddress * 3 + 1];
b = sourcePixels[sourceAddress * 3 + 0];
destinationPixels[destinationAddress * 2] = b;
destinationPixels[destinationAddress * 2 + 1] = r;
break;
//Reorder values
case PsuTexturePixelFormat.Rgba8888:
destinationPixels[destinationAddress * 4 + 1] = sourcePixels[sourceAddress * 4]; // B
destinationPixels[destinationAddress * 4 + 2] = sourcePixels[sourceAddress * 4 + 1]; // G
destinationPixels[destinationAddress * 4 + 3] = sourcePixels[sourceAddress * 4 + 2]; // R
destinationPixels[destinationAddress * 4] = sourcePixels[sourceAddress * 4 + 3]; // A
break;
case PsuTexturePixelFormat.Abgr8888:
destinationPixels[destinationAddress * 4 + 2] = sourcePixels[sourceAddress * 4]; // B
destinationPixels[destinationAddress * 4 + 1] = sourcePixels[sourceAddress * 4 + 1]; // G
destinationPixels[destinationAddress * 4 + 0] = sourcePixels[sourceAddress * 4 + 2]; // R
destinationPixels[destinationAddress * 4 + 3] = sourcePixels[sourceAddress * 4 + 3]; // A
break;
//These values have no bitmasks, so nothing gets copied.
case PsuTexturePixelFormat.Mystery16:
case PsuTexturePixelFormat.Mystery32:
default: break;
}
}
public static void DecodePixel(this PsuTexturePixelFormat format, byte[] sourcePixels, int sourceAddress, byte[] destinationPixels, int destinationAddress)
{
switch (format)
{
//These are direct copies.
case PsuTexturePixelFormat.Palette8:
case PsuTexturePixelFormat.Argb1555:
case PsuTexturePixelFormat.Rgb555:
case PsuTexturePixelFormat.Rgb565:
case PsuTexturePixelFormat.Argb8888:
Array.Copy(sourcePixels, sourceAddress * format.GetSourceBytesPerPixel(), destinationPixels, destinationAddress * format.GetDestinationBytesPerPixel(), format.GetSourceBytesPerPixel());
break;
//Promote all 4 colors from 4 to 8 bits.
case PsuTexturePixelFormat.Argb4444:
byte gb = sourcePixels[sourceAddress * 2];
byte ar = sourcePixels[sourceAddress * 2 + 1];
byte a = (byte)(ar & 0xF0);
byte r = (byte)((ar & 0xF) << 4);
byte g = (byte)(gb & 0xF0);
byte b = (byte)((gb & 0xF) << 4);
destinationPixels[destinationAddress * 4] = b;
destinationPixels[destinationAddress * 4 + 1] = g;
destinationPixels[destinationAddress * 4 + 2] = r;
destinationPixels[destinationAddress * 4 + 3] = a;
break;
//Copy 3 bytes, discard the next, copy the result into 3.
case PsuTexturePixelFormat.Xrgb8888:
destinationPixels[destinationAddress * 3] = sourcePixels[sourceAddress * 4 + 0]; // B
destinationPixels[destinationAddress * 3 + 1] = sourcePixels[sourceAddress * 4 + 1]; // G
destinationPixels[destinationAddress * 3 + 2] = sourcePixels[sourceAddress * 4 + 2]; // R
break;
//Promote first byte to upper byte of destination
case PsuTexturePixelFormat.Ax88:
destinationPixels[destinationAddress * 2 + 1] = sourcePixels[sourceAddress * 2];
break;
//Promote all 3 colors to 8 bits
case PsuTexturePixelFormat.Rgb655:
ushort combinedColor = (ushort)((sourcePixels[sourceAddress * 2 + 1] << 8) | sourcePixels[sourceAddress * 2]);
b = (byte)((combinedColor & 0x1F) << 3);
g = (byte)((combinedColor & 0x3E0) >> 2);
r = (byte)((combinedColor & 0xFC00) >> 8);
destinationPixels[destinationAddress * 3] = b; // B
destinationPixels[destinationAddress * 3 + 1] = g; // G
destinationPixels[destinationAddress * 3 + 2] = r; // R
break;
//Copy values, add dummy third value
case PsuTexturePixelFormat.Gb88:
g = sourcePixels[sourceAddress * 2 + 1];
b = sourcePixels[sourceAddress * 2 + 0];
destinationPixels[destinationAddress * 3] = b;
destinationPixels[destinationAddress * 3 + 1] = g;
break;
case PsuTexturePixelFormat.Rb88:
r = sourcePixels[sourceAddress * 2 + 1];
b = sourcePixels[sourceAddress * 2 + 0];
destinationPixels[destinationAddress * 3] = b;
destinationPixels[destinationAddress * 3 + 1] = r;
break;
//Reorder values
case PsuTexturePixelFormat.Rgba8888:
destinationPixels[destinationAddress * 4] = sourcePixels[sourceAddress * 4 + 1]; // B
destinationPixels[destinationAddress * 4 + 1] = sourcePixels[sourceAddress * 4 + 2]; // G
destinationPixels[destinationAddress * 4 + 2] = sourcePixels[sourceAddress * 4 + 3]; // R
destinationPixels[destinationAddress * 4 + 3] = sourcePixels[sourceAddress * 4]; // A
break;
case PsuTexturePixelFormat.Abgr8888:
destinationPixels[destinationAddress * 4] = sourcePixels[sourceAddress * 4 + 2]; // B
destinationPixels[destinationAddress * 4 + 1] = sourcePixels[sourceAddress * 4 + 1]; // G
destinationPixels[destinationAddress * 4 + 2] = sourcePixels[sourceAddress * 4 + 0]; // R
destinationPixels[destinationAddress * 4 + 3] = sourcePixels[sourceAddress * 4 + 3]; // A
break;
//These values have no bitmasks, so nothing gets copied.
case PsuTexturePixelFormat.Mystery16:
case PsuTexturePixelFormat.Mystery32:
default: break;
}
}