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Support for LZMA compressed SWF files

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This commit is contained in:
Jindra Pet��k
2012-12-19 21:25:41 +01:00
parent 043fec588c
commit 33740d43f0
23 changed files with 4820 additions and 8 deletions
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trunk/src/com/jpexs/asdec/Main.java
-3
View File
@@ -26,7 +26,6 @@ import com.jpexs.asdec.gui.View;
import com.jpexs.asdec.gui.proxy.ProxyFrame;
import com.jpexs.asdec.tags.DoABCTag;
import com.jpexs.asdec.tags.Tag;
import com.jpexs.proxy.Replacement;
import javax.swing.*;
import javax.swing.filechooser.FileFilter;
@@ -38,8 +37,6 @@ import java.awt.event.MouseEvent;
import java.io.*;
import java.util.ArrayList;
import java.util.List;
import java.util.logging.Level;
import java.util.logging.Logger;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
trunk/src/com/jpexs/asdec/SWF.java
+69 -5
View File
@@ -17,9 +17,9 @@
package com.jpexs.asdec;
import SevenZip.Compression.LZMA.Encoder;
import com.jpexs.asdec.tags.Tag;
import com.jpexs.asdec.types.RECT;
import java.io.*;
import java.util.ArrayList;
import java.util.List;
@@ -62,6 +62,23 @@ public class SWF {
* Use compression
*/
public boolean compressed = false;
/**
* Use LZMA compression
*/
public boolean lzma = true;
/**
* Compressed size of the file (LZMA)
*/
public long compressedSize;
/**
* LZMA Properties
*/
public byte lzmaProperties[];
/**
* Gets all tags with specified id
@@ -97,7 +114,9 @@ public class SWF {
sos.writeTags(tags);
sos.writeUI16(0);
sos.close();
if (compressed) {
if (compressed && lzma) {
os.write('Z');
}else if(compressed){
os.write('C');
} else {
os.write('F');
@@ -110,7 +129,32 @@ public class SWF {
sos.writeUI32(data.length + 8);
if (compressed) {
os = new DeflaterOutputStream(os);
if(lzma){
Encoder enc=new Encoder();
int val = lzmaProperties[0] & 0xFF;
int lc = val % 9;
int remainder = val / 9;
int lp = remainder % 5;
int pb = remainder / 5;
int dictionarySize = 0;
for (int i = 0; i < 4; i++)
dictionarySize += ((int)(lzmaProperties[1 + i]) & 0xFF) << (i * 8);
enc.SetDictionarySize(dictionarySize);
enc.SetLcLpPb(lc, lp, pb);
baos = new ByteArrayOutputStream();
enc.SetEndMarkerMode(true);
enc.Code(new ByteArrayInputStream(data), baos, -1, -1, null);
data = baos.toByteArray();
byte udata[]=new byte[4];
udata[0]=(byte)(data.length&0xFF);
udata[1]=(byte)((data.length>>8) & 0xFF);
udata[2]=(byte)((data.length>>16) & 0xFF);
udata[3]=(byte)((data.length>>24) & 0xFF);
os.write(udata);
os.write(lzmaProperties);
}else{
os = new DeflaterOutputStream(os);
}
}
os.write(data);
}
@@ -131,7 +175,7 @@ public class SWF {
byte hdr[] = new byte[3];
is.read(hdr);
String shdr = new String(hdr);
if ((!shdr.equals("FWS")) && (!shdr.equals("CWS"))) {
if ((!shdr.equals("FWS")) && (!shdr.equals("CWS")) && (!shdr.equals("ZWS"))) {
throw new IOException("Invalid SWF file");
}
version = is.read();
@@ -142,6 +186,26 @@ public class SWF {
sis = new SWFInputStream(new InflaterInputStream(is), version, 8);
compressed = true;
}
if (hdr[0] == 'Z') {
ByteArrayOutputStream baos=new ByteArrayOutputStream();
long outSize = sis.readUI32();
int propertiesSize = 5;
lzmaProperties = new byte[propertiesSize];
if (sis.read(lzmaProperties, 0, propertiesSize) != propertiesSize)
throw new IOException("LZMA:input .lzma file is too short");
SevenZip.Compression.LZMA.Decoder decoder = new SevenZip.Compression.LZMA.Decoder();
if (!decoder.SetDecoderProperties(lzmaProperties))
throw new IOException("LZMA:Incorrect stream properties");
if (!decoder.Code(sis, baos, fileSize-8))
throw new IOException("LZMA:Error in data stream");
sis = new SWFInputStream(new ByteArrayInputStream(baos.toByteArray()), version, 8);
compressed = true;
lzma = true;
}
displayRect = sis.readRECT();
@@ -216,5 +280,5 @@ public class SWF {
return false;
}
return true;
}
}
}