package com.zesped.util;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.OutputStream;
import com.knowgate.dfs.StreamPipe;
import com.zesped.DAO;
import com.zesped.Log;
import es.ipsa.atril.doc.user.AttributeMultiValue;
import es.ipsa.atril.doc.user.Dms;
import es.ipsa.atril.doc.user.Document;
import es.ipsa.atril.doc.user.Item;
import es.ipsa.atril.eventLogger.AtrilEvent;
import es.ipsa.atril.sec.authentication.AtrilSession;
public class ThumbnailCreator extends Thread {
private String sParent, sItem;
protected ThumbnailCreator(String sParentId, String sItemId) {
sParent = sParentId;
sItem = sItemId;
}
public void run() {
final float MaxWidth = 512f;
final float MaxHeight = 640f;
AtrilSession oSes = null;
StreamPipe oPipe;
try {
oSes = DAO.getAdminSession("ThumbnailCreator");
oSes.autoCommit(true);
Dms oDms = oSes.getDms();
Document oDoc = oDms.getDocument(sParent);
Item oItm = oDms.getDocument(sItem).item();
String sFileName = oItm.name().toLowerCase();
oPipe = new StreamPipe();
ByteArrayOutputStream oByOut = new ByteArrayOutputStream();
if (sFileName.endsWith(".pdf")) {
Log.out.debug("Item.getInputStreamTranscodedToMime(image/jpeg)");
oPipe.between(oItm.getInputStreamTranscodedToMime("image/jpeg"), oByOut);
} else {
Log.out.debug("Item.getInputStream()");
oPipe.between(oItm.getInputStream(), oByOut);
}
byte[] aBytes = oByOut.toByteArray();
oByOut.close();
oByOut = null;
Log.out.debug("new Picture()");
Picture oPic = new Picture();
Log.out.debug("Before Picture.dimensions()");
int[] aWidthHeight = oPic.dimensions(aBytes, "jpeg");
Log.out.debug("After Picture.dimensions()");
if (null==aWidthHeight)
throw new NullPointerException("Unable to get dimensions for image "+oItm.name());
Log.out.debug("Image width="+String.valueOf(aWidthHeight[0])+" height="+String.valueOf(aWidthHeight[1]));
int iWidth, iHeight;
if (aWidthHeight[0]<=MaxWidth && aWidthHeight[0]<=MaxHeight) {
iWidth = aWidthHeight[0];
iHeight = aWidthHeight[1];
} else {
float fWidthRatio = ((float) aWidthHeight[0]) / MaxWidth;
float fHeightRatio = ((float) aWidthHeight[1]) / MaxHeight;
if (fWidthRatio>fHeightRatio) {
iWidth = (int) MaxWidth;
iHeight = (int) (MaxWidth*aWidthHeight[1])/aWidthHeight[0];
} else {
iWidth = (int) (aWidthHeight[0]*MaxHeight)/aWidthHeight[1];
iHeight = (int) MaxHeight;
}
}
Log.out.debug("Resampled width="+String.valueOf(iWidth)+" height="+String.valueOf(iHeight));
String sCodec = null;
if (sFileName.endsWith(".jpg") || sFileName.endsWith(".jpeg") || sFileName.endsWith(".pdf"))
sCodec = "jpeg";
else if (sFileName.endsWith(".gif"))
sCodec = "gif";
else if (sFileName.endsWith(".tif") || sFileName.endsWith(".tiff"))
sCodec = "tiff";
else {
Log.out.error("ThumbnailCreator.run() Could not find suitable codec for file "+oItm.name());
throw new InstantiationException("Could not find suitable codec for file "+oItm.name());
}
Log.out.debug("Picture.createThumbBitmap("+sCodec+","+String.valueOf(iWidth)+","+String.valueOf(iHeight)+",80)");
byte[] byThumb = oPic.createThumbBitmap(aBytes, sCodec, iWidth, iHeight, 80);
Document oThl = oDms.newDocument(oDms.getDocumentType(oDoc.type().name()+"Thumbnail"), oDoc);
AttributeMultiValue oAtr = oThl.attribute("width");
oAtr.set((long) iWidth);
oAtr = oThl.attribute("height");
oAtr.set((long) iHeight);
oThl.save("");
Item oThi = oThl.item();
String sItemName = "th"+oDoc.id()+".jpg";
oThi.setName(sItemName);
oThi.mimeType("image/jpeg");
OutputStream oOutStrm = oThi.getOutputStream();
oPipe = new StreamPipe();
oPipe.between(new ByteArrayInputStream(byThumb), oOutStrm);
oThl.save("");
oOutStrm.close();
Log.out.debug("Thumbnail creation done");
DAO.log(oSes, oThl, Class.forName("com.zesped.model."+oDoc.type().name()+"Thumbnail"), "INSERT THUMBNAIL", AtrilEvent.Level.INFO, sItemName);
oSes.disconnect();
oSes.close();
oSes=null;
} catch (Exception e) {
Log.out.error("ThumbnailCreator.run() "+e.getClass().getName()+" "+e.getMessage(), e);
} finally {
if (oSes!=null) {
if (oSes.isConnected()) oSes.disconnect();
if (oSes.isOpen()) oSes.close();
}
}
Log.out.debug("End ThumbnailCreator.run()");
}
public static void createThumbnailFor(String sParentId, String sItemId) {
ThumbnailCreator oThc = new ThumbnailCreator(sParentId, sItemId);
oThc.run();
}
}