package net.minecraft.client.renderer;
import cpw.mods.fml.relauncher.Side;
import cpw.mods.fml.relauncher.SideOnly;
import java.awt.Graphics;
import java.awt.image.BufferedImage;
import java.awt.image.DataBufferInt;
import java.awt.image.ImageObserver;
@SideOnly(Side.CLIENT)
public class ImageBufferDownload implements IImageBuffer
{
private int[] imageData;
private int imageWidth;
private int imageHeight;
public BufferedImage parseUserSkin(BufferedImage par1BufferedImage)
{
if (par1BufferedImage == null)
{
return null;
}
else
{
this.imageWidth = 64;
this.imageHeight = 32;
BufferedImage bufferedimage1 = new BufferedImage(this.imageWidth, this.imageHeight, 2);
Graphics graphics = bufferedimage1.getGraphics();
graphics.drawImage(par1BufferedImage, 0, 0, (ImageObserver)null);
graphics.dispose();
this.imageData = ((DataBufferInt)bufferedimage1.getRaster().getDataBuffer()).getData();
this.setAreaOpaque(0, 0, 32, 16);
this.setAreaTransparent(32, 0, 64, 32);
this.setAreaOpaque(0, 16, 64, 32);
boolean flag = false;
int i;
int j;
int k;
for (i = 32; i < 64; ++i)
{
for (j = 0; j < 16; ++j)
{
k = this.imageData[i + j * 64];
if ((k >> 24 & 255) < 128)
{
flag = true;
}
}
}
if (!flag)
{
for (i = 32; i < 64; ++i)
{
for (j = 0; j < 16; ++j)
{
k = this.imageData[i + j * 64];
if ((k >> 24 & 255) < 128)
{
flag = true;
}
}
}
}
return bufferedimage1;
}
}
/**
* Makes the given area of the image transparent if it was previously completely opaque (used to remove the outer
* layer of a skin around the head if it was saved all opaque; this would be redundant so it's assumed that the skin
* maker is just using an image editor without an alpha channel)
*/
private void setAreaTransparent(int par1, int par2, int par3, int par4)
{
if (!this.hasTransparency(par1, par2, par3, par4))
{
for (int i1 = par1; i1 < par3; ++i1)
{
for (int j1 = par2; j1 < par4; ++j1)
{
this.imageData[i1 + j1 * this.imageWidth] &= 16777215;
}
}
}
}
/**
* Makes the given area of the image opaque
*/
private void setAreaOpaque(int par1, int par2, int par3, int par4)
{
for (int i1 = par1; i1 < par3; ++i1)
{
for (int j1 = par2; j1 < par4; ++j1)
{
this.imageData[i1 + j1 * this.imageWidth] |= -16777216;
}
}
}
/**
* Returns true if the given area of the image contains transparent pixels
*/
private boolean hasTransparency(int par1, int par2, int par3, int par4)
{
for (int i1 = par1; i1 < par3; ++i1)
{
for (int j1 = par2; j1 < par4; ++j1)
{
int k1 = this.imageData[i1 + j1 * this.imageWidth];
if ((k1 >> 24 & 255) < 128)
{
return true;
}
}
}
return false;
}
}