/*
* Copyright (c) 2005 Sun Microsystems, Inc. All Rights Reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* - Redistribution of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* - Redistribution in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* Neither the name of Sun Microsystems, Inc. or the names of
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* This software is provided "AS IS," without a warranty of any kind. ALL
* EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND WARRANTIES,
* INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A
* PARTICULAR PURPOSE OR NON-INFRINGEMENT, ARE HEREBY EXCLUDED. SUN
* MICROSYSTEMS, INC. ("SUN") AND ITS LICENSORS SHALL NOT BE LIABLE FOR
* ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING OR
* DISTRIBUTING THIS SOFTWARE OR ITS DERIVATIVES. IN NO EVENT WILL SUN OR
* ITS LICENSORS BE LIABLE FOR ANY LOST REVENUE, PROFIT OR DATA, OR FOR
* DIRECT, INDIRECT, SPECIAL, CONSEQUENTIAL, INCIDENTAL OR PUNITIVE
* DAMAGES, HOWEVER CAUSED AND REGARDLESS OF THE THEORY OF LIABILITY,
* ARISING OUT OF THE USE OF OR INABILITY TO USE THIS SOFTWARE, EVEN IF
* SUN HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
*
* You acknowledge that this software is not designed or intended for use
* in the design, construction, operation or maintenance of any nuclear
* facility.
*
* Sun gratefully acknowledges that this software was originally authored
* and developed by Kenneth Bradley Russell and Christopher John Kline.
*/
package com.jogamp.opengl.util.texture.spi;
import java.io.*;
import java.nio.*;
import java.nio.channels.FileChannel;
import com.jogamp.opengl.*;
import com.jogamp.common.util.IOUtil;
import com.jogamp.opengl.util.texture.*;
public class NetPbmTextureWriter implements TextureWriter {
int magic;
public NetPbmTextureWriter() {
this(0); // auto
}
/**
* supported magic values are:<br>
* <pre>
* magic 0 - detect by file suffix (TextureIO compliant)
* magic 6 - PPM binary RGB
* magic 7 - PAM binary RGB or RGBA
* </pre>
*/
public NetPbmTextureWriter(final int magic) {
switch(magic) {
case 0:
case 6:
case 7:
break;
default:
throw new GLException("Unsupported magic: "+magic+", should be 0 (auto), 6 (PPM) or 7 (PAM)");
}
this.magic = magic;
}
public int getMagic() { return magic; }
/** @see TextureIO#PPM */
public static final String PPM = TextureIO.PPM;
/** @see TextureIO#PAM */
public static final String PAM = TextureIO.PAM;
public String getSuffix() { return (magic==6)?PPM:PAM; }
@Override
public boolean write(final File file, final TextureData data) throws IOException {
boolean res;
final int magic_old = magic;
// file suffix selection
if (0==magic) {
if (PPM.equals(IOUtil.getFileSuffix(file))) {
magic = 6;
} else if (PAM.equals(IOUtil.getFileSuffix(file))) {
magic = 7;
} else {
return false;
}
}
try {
res = writeImpl(file, data);
} finally {
magic = magic_old;
}
return res;
}
private boolean writeImpl(final File file, final TextureData data) throws IOException {
int pixelFormat = data.getPixelFormat();
final int pixelType = data.getPixelType();
if ((pixelFormat == GL.GL_RGB ||
pixelFormat == GL.GL_RGBA ||
pixelFormat == GL.GL_BGR ||
pixelFormat == GL.GL_BGRA ) &&
(pixelType == GL.GL_BYTE ||
pixelType == GL.GL_UNSIGNED_BYTE)) {
ByteBuffer buf = (ByteBuffer) data.getBuffer();
if (null == buf ) {
buf = (ByteBuffer) data.getMipmapData()[0];
}
buf.rewind();
final int comps = ( pixelFormat == GL.GL_RGBA || pixelFormat == GL.GL_BGRA ) ? 4 : 3 ;
if( pixelFormat == GL.GL_BGR || pixelFormat == GL.GL_BGRA ) {
// Must reverse order of red and blue channels to get correct results
for (int i = 0; i < buf.remaining(); i += comps) {
final byte red = buf.get(i + 0);
final byte blue = buf.get(i + 2);
buf.put(i + 0, blue);
buf.put(i + 2, red);
}
pixelFormat = ( 4 == comps ) ? GL.GL_RGBA : GL.GL_RGB;
data.setPixelFormat(pixelFormat);
}
if(magic==6 && comps==4) {
throw new IOException("NetPbmTextureWriter magic 6 (PPM) doesn't RGBA pixel format, use magic 7 (PAM)");
}
final FileOutputStream fos = IOUtil.getFileOutputStream(file, true);
final StringBuilder header = new StringBuilder();
header.append("P");
header.append(magic);
header.append("\n");
if(7==magic) {
header.append("WIDTH ");
}
header.append(data.getWidth());
if(7==magic) {
header.append("\nHEIGHT ");
} else {
header.append(" ");
}
header.append(data.getHeight());
if(7==magic) {
header.append("\nDEPTH ");
header.append(comps);
header.append("\nMAXVAL 255\nTUPLTYPE ");
if(pixelFormat == GL.GL_RGBA) {
header.append("RGB_ALPHA");
} else {
header.append("RGB");
}
header.append("\nENDHDR\n");
} else {
header.append("\n255\n");
}
fos.write(header.toString().getBytes());
final FileChannel fosc = fos.getChannel();
fosc.write(buf);
fosc.force(true);
fosc.close();
fos.close();
buf.rewind();
return true;
}
throw new IOException("NetPbmTextureWriter writer doesn't support this pixel format / type (only GL_RGB/A + bytes)");
}
}