TIFF 檔基本上可以分為 單檔單頁 , 或是 單檔多頁
因為廠商寫出來的切檔程式速度很慢 , 因此本於能夠盡快導入系統的責任感 , 進行了協助測試
TIFFSeparater Ver 3.0
這個也有變快 , 沒有使用到 NIO , FileChannel ; 取消 FineInputStream ;
因為再次測試的結果 , 發現跟 NIO 也沒有太大的影響 , 所以應該是 Stream 的問題
//ImageDecoder decoder = ImageCodec.createImageDecoder("tiff", fis, null); //java.io.FileInputStream 這個版本很慢
ImageDecoder decoder = ImageCodec.createImageDecoder("tiff" , stream , null);//com.sun.media.jai.codec.SeekableStream
//com.sun.media.jai.codec.FileSeekableStream (A)都在可以接受的速度
//com.sun.media.jai.codec.ByteArraySeekableStream (B) 都在可以接受的速度
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TIFFSeparater.java
import java.awt.image.RenderedImage;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.nio.channels.FileChannel;
import java.util.ArrayList;
import java.util.Collection;
import java.util.UUID;
import org.apache.commons.io.FileUtils;
import org.apache.commons.io.IOUtils;
import org.apache.commons.lang3.time.StopWatch;
import com.sun.media.jai.codec.FileSeekableStream;
import com.sun.media.jai.codec.ImageCodec;
import com.sun.media.jai.codec.ImageDecoder;
import com.sun.media.jai.codec.ImageEncoder;
import com.sun.media.jai.codec.SeekableStream;
import com.sun.media.jai.codec.TIFFDirectory;
import com.sun.media.jai.codec.TIFFEncodeParam;
public class TIFFSeparater {
public static void splitImage(Collection
System.out.println("Enter split methd ");
StopWatch stopWatch = new StopWatch();
stopWatch.start();
FileUtils.cleanDirectory(destPath);
stopWatch.stop();
System.out.println("FileUtils.cleanDirectory Spend time: " + stopWatch.getTime()/1000f);
stopWatch.reset();
String[] form_id = forms.split(";");
ArrayList
for (File imgFile : imgFiles) { //for1
stopWatch.start();
//FileInputStream fis = new FileInputStream(imgFile);
//FileChannel fisChannel = fis.getChannel();
//ByteBuffer buffer = ByteBuffer.allocate((int)fisChannel.size());
//fisChannel.read(buffer);
//fisChannel.close();
//SeekableStream stream = new ByteArraySeekableStream(buffer.array());
SeekableStream stream = new FileSeekableStream(imgFile);
//ImageDecoder decoder = ImageCodec.createImageDecoder("tiff", fis, null);
ImageDecoder decoder = ImageCodec.createImageDecoder("tiff" , stream , null);
stopWatch.stop();
System.out.println("ImageCodec.createImageDecoder(" + imgFile + ") Spend time: " + stopWatch.getTime()/1000f);
stopWatch.reset();
int page_count = decoder.getNumPages();
for(int i = 0; i < page_count; i++) { //for2
File dest = new File(destPath, UUID.randomUUID().toString() + ".tif");
stopWatch.start();
RenderedImage ri = decoder.decodeAsRenderedImage(i);
stopWatch.stop();
System.out.println("decoder.decodeAsRenderedImage( " + i + " ) Spend time: " + stopWatch.getTime()/1000f);
stopWatch.reset();
stopWatch.start();
TIFFDirectory td = (TIFFDirectory)ri.getProperty("tiff_directory");
stopWatch.stop();
System.out.println("ri.getProperty(tiff_directory) Spend time: " + stopWatch.getTime()/1000f);
stopWatch.reset();
stopWatch.start();
TIFFEncodeParam tep = new TIFFEncodeParam();
stopWatch.stop();
System.out.println("new TIFFEncodeParam() Spend time: " + stopWatch.getTime()/1000f);
stopWatch.reset();
stopWatch.start();
tep.setExtraFields(td.getFields());
stopWatch.stop();
System.out.println("td.getFields() Spend time: " + stopWatch.getTime()/1000f);
stopWatch.reset();
stopWatch.start();
tep.setCompression(TIFFEncodeParam.COMPRESSION_GROUP4);
stopWatch.stop();
System.out.println("ep.setCompression Spend time: " + stopWatch.getTime()/1000f);
stopWatch.reset();
stopWatch.start();
FileOutputStream fos = new FileOutputStream(dest);
FileChannel fosChannel = fos.getChannel();
stopWatch.stop();
System.out.println("new FileOutputStream(" + dest +") Spend time: " + stopWatch.getTime()/1000f);
stopWatch.reset();
stopWatch.start();
ImageEncoder encoder = ImageCodec.createImageEncoder("tiff", fos, tep);
encoder.encode(ri);
fos.flush();
fos.close();
IOUtils.closeQuietly(fos);
stopWatch.stop();
System.out.println("new FileOutputStream(" + dest +") Spend time: " + stopWatch.getTime()/1000f);
stopWatch.reset();
file_list.add(dest.getName());
} //for2
//IOUtils.closeQuietly(fis);
} //for1
FileUtils.writeLines(new File(destPath, "Context.dat"), file_list, "\r\n");
System.out.println("Exit split method");
}
public final static void main(String args[]) throws Exception {
if (args == null || args.length < 2)
{
System.err.println("Check your agrument is correct!!");
System.exit(-1);
}
Collection
StringBuilder formsBuilder = new StringBuilder();
String filesString [] = args [0].split(";");
for (String string : filesString) {
tifs.add(new File(string));
formsBuilder.append( string + ";");
}
// tifs.add(new File("D:/111252f58002242b.tif"));
// tifs.add(new File("D:/111252f58002242d.tif"));
// tifs.add(new File("D:/111252f58002242c.tif"));
System.out.println(formsBuilder.toString());
System.out.println(args[1]);
splitImage(tifs,formsBuilder.toString(),new File(args[1]));
}
}
