/*
* $RCSfile: BMPCodec.java,v $
*
* Copyright (c) 2005 Sun Microsystems, Inc. All rights reserved.
*
* Use is subject to license terms.
*
* $Revision: 1.1 $
* $Date: 2005/02/11 04:55:35 $
* $State: Exp $
*/
package com.sun.media.jai.codecimpl;
import java.awt.image.DataBuffer;
import java.awt.image.PixelInterleavedSampleModel;
import java.awt.image.RenderedImage;
import java.awt.image.SampleModel;
import java.io.File;
import java.io.FileInputStream;
import java.io.InputStream;
import java.io.IOException;
import java.io.OutputStream;
import com.sun.media.jai.codec.ImageCodec;
import com.sun.media.jai.codec.ImageDecoder;
import com.sun.media.jai.codec.ImageDecodeParam;
import com.sun.media.jai.codec.ImageEncoder;
import com.sun.media.jai.codec.ImageEncodeParam;
import com.sun.media.jai.codec.BMPEncodeParam;
import com.sun.media.jai.codec.SeekableStream;
/**
* @since EA2
*/
public final class BMPCodec extends ImageCodec {
public BMPCodec() {}
public String getFormatName() {
return "bmp";
}
public Class getEncodeParamClass() {
return com.sun.media.jai.codec.BMPEncodeParam.class;
}
public Class getDecodeParamClass() {
return Object.class;
}
public boolean canEncodeImage(RenderedImage im,
ImageEncodeParam param) {
SampleModel sampleModel = im.getSampleModel();
int dataType = sampleModel.getTransferType();
if (dataType != DataBuffer.TYPE_BYTE &&
!CodecUtils.isPackedByteImage(im)) {
return false;
}
if (param != null) {
if (!(param instanceof BMPEncodeParam)) {
return false;
}
BMPEncodeParam BMPParam = (BMPEncodeParam)param;
int version = BMPParam.getVersion();
if ((version == BMPEncodeParam.VERSION_2) ||
(version == BMPEncodeParam.VERSION_4)) {
return false;
}
}
return true;
}
protected ImageEncoder createImageEncoder(OutputStream dst,
ImageEncodeParam param) {
BMPEncodeParam p = null;
if (param != null) {
p = (BMPEncodeParam)param;
}
return new BMPImageEncoder(dst, p);
}
protected ImageDecoder createImageDecoder(InputStream src,
ImageDecodeParam param) {
return new BMPImageDecoder(src, null);
}
protected ImageDecoder createImageDecoder(File src,
ImageDecodeParam param)
throws IOException {
return new BMPImageDecoder(new FileInputStream(src), null);
}
protected ImageDecoder createImageDecoder(SeekableStream src,
ImageDecodeParam param) {
return new BMPImageDecoder(src, null);
}
public int getNumHeaderBytes() {
return 2;
}
public boolean isFormatRecognized(byte[] header) {
return ((header[0] == 0x42) &&
(header[1] == 0x4d));
}
}