public Cube()
{
ByteBuffer byteBuf = ByteBuffer.AllocateDirect(vertices.Length * 4);
byteBuf.Order(ByteOrder.NativeOrder());
mVertexBuffer = byteBuf.AsFloatBuffer();
mVertexBuffer.Put(vertices);
mVertexBuffer.Position(0);
byteBuf = ByteBuffer.AllocateDirect(colors.Length * 4);
byteBuf.Order(ByteOrder.NativeOrder());
mColorBuffer = byteBuf.AsFloatBuffer();
mColorBuffer.Put(colors);
mColorBuffer.Position(0);
mIndexBuffer = ByteBuffer.AllocateDirect(indices.Length);
mIndexBuffer.Put(indices);
mIndexBuffer.Position(0);
}
public void decode(ByteBuffer buffer, int stride, Format fmt)
{
int offset = buffer.Position();
int lineSize = ((width * bitdepth + 7) / 8) * bytesPerPixel;
byte[] curLine = new byte[lineSize + 1];
byte[] prevLine = new byte[lineSize + 1];
byte[] palLine = (bitdepth < 8) ? new byte[width + 1] : null;
Inflater inflater = new Inflater();
try
{
for (int y = 0; y < height; y++)
{
readChunkUnzip(inflater, curLine, 0, curLine.Length);
unfilter(curLine, prevLine);
buffer.Position(offset + y * stride);
switch (colorType)
{
case COLOR_TRUECOLOR:
switch (fmt)
{
case Format.ABGR:
copyRGBtoABGR(buffer, curLine);
break;
case Format.RGBA:
copyRGBtoRGBA(buffer, curLine);
break;
case Format.BGRA:
copyRGBtoBGRA(buffer, curLine);
break;
case Format.RGB:
copy(buffer, curLine);
break;
default:
throw new UnsupportedOperationException("Unsupported format for this image");
}
break;
case COLOR_TRUEALPHA:
switch (fmt)
{
case Format.ABGR:
copyRGBAtoABGR(buffer, curLine);
break;
case Format.RGBA:
copy(buffer, curLine);
break;
case Format.BGRA:
copyRGBAtoBGRA(buffer, curLine);
break;
case Format.RGB:
copyRGBAtoRGB(buffer, curLine);
break;
default:
throw new UnsupportedOperationException("Unsupported format for this image");
}
break;
case COLOR_GREYSCALE:
switch (fmt)
{
case Format.LUMINANCE:
case Format.ALPHA:
copy(buffer, curLine);
break;
default:
throw new UnsupportedOperationException("Unsupported format for this image");
}
break;
case COLOR_GREYALPHA:
switch (fmt)
{
case Format.LUMINANCE_ALPHA:
copy(buffer, curLine);
break;
default:
throw new UnsupportedOperationException("Unsupported format for this image");
}
break;
case COLOR_INDEXED:
switch (bitdepth)
{
case 8:
palLine = curLine;
break;
case 4:
expand4(curLine, palLine);
break;
case 2:
expand2(curLine, palLine);
break;
case 1:
expand1(curLine, palLine);
break;
default:
throw new UnsupportedOperationException("Unsupported bitdepth for this image");
}
switch (fmt)
{
case Format.ABGR:
copyPALtoABGR(buffer, palLine);
break;
case Format.RGBA:
copyPALtoRGBA(buffer, palLine);
break;
case Format.BGRA:
copyPALtoBGRA(buffer, palLine);
break;
default:
throw new UnsupportedOperationException("Unsupported format for this image");
}
break;
default:
throw new UnsupportedOperationException("Not yet implemented");
}
byte[] tmp = curLine;
curLine = prevLine;
prevLine = tmp;
}
}
finally
{
inflater.End();
}
}