UnknownRectDecoder.java

/*******************************************************************************
 * Copyright (c) 2016 comtel inc.
 *
 * Licensed under the Apache License, version 2.0 (the "License"); you may not use this file except
 * in compliance with the License. You may obtain a copy of the License at:
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software distributed under the License
 * is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
 * or implied. See the License for the specific language governing permissions and limitations under
 * the License.
 *******************************************************************************/
package org.jfxvnc.net.rfb.codec.decoder.rect;

import java.util.List;
import org.jfxvnc.net.rfb.codec.PixelFormat;

import io.netty.buffer.ByteBuf;
import io.netty.channel.ChannelHandlerContext;

public class UnknownRectDecoder implements FrameRectDecoder {

  protected final int bpp;
  protected int capacity;

  public UnknownRectDecoder(PixelFormat pixelFormat) {
    this.bpp = pixelFormat.getBytePerPixel();
  }

  @Override
  public boolean decode(ChannelHandlerContext ctx, ByteBuf in, List<Object> out) throws Exception {
    if (!in.isReadable(capacity)) {
      return false;
    }
    in.skipBytes(capacity);
    return true;
  }

  @Override
  public void setRect(FrameRect rect) {
    this.capacity = rect.getWidth() * rect.getHeight() * bpp;
  }
}