modules/asc/src/java/macromedia/asc/embedding/SwfMaker.java - flex-sdk - Git at Google

 /*
  *
  *  Licensed to the Apache Software Foundation (ASF) under one or more
  *  contributor license agreements.  See the NOTICE file distributed with
  *  this work for additional information regarding copyright ownership.
  *  The ASF licenses this file to You under the Apache License, Version 2.0
  *  (the "License"); you may not use this file except in compliance with
  *  the License.  You may obtain a copy of the License at
  *
  *      http://www.apache.org/licenses/LICENSE-2.0
  *
  *  Unless required by applicable law or agreed to in writing, software
  *  distributed under the License is distributed on an "AS IS" BASIS,
  *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  *  See the License for the specific language governing permissions and
  *  limitations under the License.
  *
  */

 package macromedia.asc.embedding;

 import macromedia.asc.util.ByteList;

 import java.util.StringTokenizer;

 public class SwfMaker
 {
 	public static final int stagShowFrame       = 1;
 	public static final int stagEnableDebugger2 = 64;   // this movie may be debugged
 	public static final int stagDebugID			= 63;   // unique ID to match up swf with swd
 	public static final int stagFileAttributes	= 69;
 	public static final int stagDoABC           = 72;
 	public static final int stagSymbolClass     = 76;
 	public static final int stagEnableTelemetry	= 93;


 	// Flags for stagFileAttributes
 	public static final int swfFlagsUseNetwork          = 0x00000001;  // when this SWF is local, give it network access instead of local access
 	public static final int swfFlagsSwfRelativeUrls     = 0x00000002;  // relative URL paths in this SWF are relative to SWF location rather than browser location
 	public static final int swfFlagsNoCrossdomainCache  = 0x00000004;  // do not add this SWF to the Asset Cache
 	public static final int swfFlagsAS3                 = 0x00000008;  // this SWF contains AVM+ bytecodes
 	public static final int swfFlagsHasMetadata         = 0x00000010;  // this SWF contains stagMetadata somewhere
     public static final int swfFlagsBrokerLocalConnection = 0x00004000;  // broker local connections
     public static final int swfFlagsBrokerProductManager = 0x00008000;  // broker product manager
 	// (this is not relevant to the player, but is relevant to search engines)
 	public static final int kDefaultSwfFlags            = 0x00000000;   // these flags are assumed when no stagFileAttributes is present

 	private int CoreAbs(int x) { return (x<0) ? (-x) : x; }

 	class SRECT
 	{
 		public int xmin;
 		public int xmax;
 		public int ymin;
 		public int ymax;
 	};

     int bitPos;
     int bitBuf;
     ByteList buffer = new ByteList();

 	int     pos;
 	int		tagCode;
 	int		tagPos;
 	int		tagLen;
 	boolean	tagIsBig;
     int     swf_version;

     SwfMaker()
     {
 		pos             = 0;
 	    tagCode			= 0;
 	    tagPos			= 0;
 	    tagLen			= 0;
 	    tagIsBig		= false;
         swf_version     = 9;
     }

 	void SetPos(int pos)
 	{
 		this.pos = pos;
 	}

 	void CheckSpace(int count)
 	{
 		buffer.resize(pos+count);
 	}

     void PutData(byte data[])
     {
 		CheckSpace(data.length);
 		for (int i=0; i<data.length; i++) {
 			buffer.set(pos++, data[i]);
 		}
     }

     void PutByte(byte b)
     {
 		CheckSpace(1);
 		buffer.set(pos++, b);
     }

 	void PutString(String str)
 	{
         PutData(str.getBytes());
 		PutByte((byte)0);
 	}

     void PutWord(int d)
     {
 		CheckSpace(2);
 		buffer.set(pos++, (byte)d);
         buffer.set(pos++, (byte)(d>>8));
     }

     void PutDWord(int d)
     {
 		CheckSpace(4);
         buffer.set(pos++, (byte)d);
         buffer.set(pos++, (byte)(d>>8));
         buffer.set(pos++, (byte)(d>>16));
         buffer.set(pos++, (byte)(d>>24));
     }

     void StartTag(int code, boolean isBig)
     {
 	    //assert(tagCode==0);

 	    tagCode = code;
 	    tagPos = pos;
 	    tagIsBig = isBig;

 	    PutWord(0);
 	    if ( isBig )
 		    PutDWord(0);
     }

     void FinishTag()
     {
 	    int savePos = pos;
 	    int tagLen = pos - tagPos - (tagIsBig ? 6 : 2);
 	    pos = tagPos;

 	    if (tagIsBig) {
 		    PutWord((short)((tagCode<<6) | 0x3f));
 		    PutDWord(tagLen);
 	    } else {
 		    //assert(tagLen < 0x3f);
 		    PutWord((short)((tagCode<<6) | tagLen));
 	    }
 	    pos = savePos;
 	    tagCode = 0;
     }

     int CountBits(int v)
     {
 	    int n = 0;
 	    while ( (v & ~0xF) != 0 ) {
 		    v >>= 4;
 	 	    n += 4;
 	    }
 	    while ( v != 0 ) {
 		    v >>= 1;
 		    n++;
 	    }
 	    return n;
     }

     int CheckMag(int v, int mag)
     {
 	    if ( v < 0 ) v = -v;
 	    return v > mag ? v : mag;
     }

     void InitBits()
     {
 	    bitPos = 8;
 	    bitBuf = 0;
     }

     void FlushBits()
     {
 	    if ( bitPos < 8 )
 		    PutByte((byte)bitBuf);
     }

     void PutBits(int v, int n)
     {
         if ( n <= 0 )
             return;
         for (;;) {
             v &= 0xFFFFFFFF >> (32-n);	// mask off any extra bits, note this does not work for n == 0, hence check for zero above
             int s = n - bitPos;	// The number of bits more than the buffer will hold
             if ( s <= 0 ) {
                 // This fits in the buffer, add it and finish
                 bitBuf |= v << -s;
                 bitPos -= n;	// we used x bits in the buffer
                 return;
             } else {
                 // This fills the buffer, fill the remaining space and try again
                 bitBuf |= v >> s;
                 n -= bitPos;	// we places x bits in the buffer
                 PutByte((byte)bitBuf);
                 bitBuf = 0;
                 bitPos = 8;
             }
         }
     }

     void PutRect(SRECT r)
     {
 	    InitBits();

 	    int mag = CheckMag(r.xmin, CheckMag(r.xmax, CheckMag(r.ymin, CoreAbs(r.ymax))));
 	    int nBits = CountBits(mag)+1;	// include a sign bit

         if (nBits<15) nBits = 15;

 	    PutBits(nBits, 5);
 	    PutBits(r.xmin, nBits);
 	    PutBits(r.xmax, nBits);
 	    PutBits(r.ymin, nBits);
 	    PutBits(r.ymax, nBits);

 	    FlushBits();
     }

 	public boolean EncodeABC(ByteList abcData,
 						     String options)
 	{
 		String className = null;
 		int width, height, fps = 12;
         int useNetwork=0;
         int brokerLocalConnection=0;
         int brokerProductManager=0;

         boolean debug = false;
 		int dAt = options.indexOf(",-g");
 		if (dAt > -1)
 		{
 			// strip it and enable debugger tag
 			debug = true;
 			options = options.substring(0, dAt) + options.substring(dAt+3);
 		}
         dAt = options.indexOf(",-usenetwork");
         if (dAt>-1) {
             useNetwork=swfFlagsUseNetwork;
             options = options.substring(0, dAt) + options.substring(dAt+12);
         }
         dAt = options.indexOf(",-brokerLocalConnection");
         if (dAt>-1) {
             brokerLocalConnection=swfFlagsBrokerLocalConnection;
             options = options.substring(0, dAt) + options.substring(dAt+23);
         }
         dAt = options.indexOf(",-brokerProductManager");
         if (dAt>-1) {
             brokerProductManager=swfFlagsBrokerProductManager;
             options = options.substring(0, dAt) + options.substring(dAt+22);
         }

         StringTokenizer tokenizer = new StringTokenizer(options, ",");
 		switch (tokenizer.countTokens())
 		{
 		case 2:
 			width = Integer.parseInt(tokenizer.nextToken());
 			height = Integer.parseInt(tokenizer.nextToken());
 			break;
 		case 3:
 			className = tokenizer.nextToken();
 			width = Integer.parseInt(tokenizer.nextToken());
 			height = Integer.parseInt(tokenizer.nextToken());
 			break;
 		case 4:
 			className = tokenizer.nextToken();
 			width = Integer.parseInt(tokenizer.nextToken());
 			height = Integer.parseInt(tokenizer.nextToken());
 			fps = Integer.parseInt(tokenizer.nextToken());
 			break;
 		default:
 			return false;
 		}

         PutByte((byte)'F');
         PutByte((byte)'W');
         PutByte((byte)'S');
         PutByte((byte)swf_version);
         PutDWord(0);

 		SRECT bounds = new SRECT();
 		bounds.xmin = 0;
 		bounds.ymin = 0;
 		bounds.xmax = width*20;
 		bounds.ymax = height*20;
 		PutRect(bounds);
 		PutWord(fps<<8);   // frame rate
 		PutWord(1);       // # of frames  SDD ### Change to sensicle number

 		StartTag(stagFileAttributes, false);
 		PutDWord(swfFlagsAS3|useNetwork|brokerLocalConnection|brokerProductManager);
 		FinishTag();

 		if (debug)
 		{
 			StartTag(stagEnableDebugger2, false);
 			PutWord(0x1975);
 			PutString("");
 			FinishTag();

 			StartTag(stagDebugID, false);
 			PutData( new byte[] { (byte)0xCA, (byte)0x49, (byte)0x96, (byte)0xC7,
 								  (byte)0x57, (byte)0x8E, (byte)0x20, (byte)0x02,
 								  (byte)0xDD, (byte)0x92, (byte)0xA6, (byte)0x3F,
 								  (byte)0x18, (byte)0x78, (byte)0xC5, (byte)0xBC } );
 			FinishTag();
 		}

 		StartTag(stagDoABC, true);
 		PutData(abcData.toByteArray());
 		FinishTag();

 		if (className != null)
 		{
 			StartTag(stagSymbolClass, false);
 			PutWord(1);
 			PutWord(0);
 			PutString(className);
 			FinishTag();
 		}

         // Show Frame
         StartTag(stagShowFrame, false);
         FinishTag();

 		// Set the length
 		int size = pos;
 		SetPos(4);
 		PutDWord(size);

 		return true;
 	}
 };
	/*
	*
	* Licensed to the Apache Software Foundation (ASF) under one or more
	* contributor license agreements. See the NOTICE file distributed with
	* this work for additional information regarding copyright ownership.
	* The ASF licenses this file to You under the Apache License, Version 2.0
	* (the "License"); you may not use this file except in compliance with
	* the License. You may obtain a copy of the License at
	*
	* http://www.apache.org/licenses/LICENSE-2.0
	*
	* Unless required by applicable law or agreed to in writing, software
	* distributed under the License is distributed on an "AS IS" BASIS,
	* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
	* See the License for the specific language governing permissions and
	* limitations under the License.
	*
	*/

	package macromedia.asc.embedding;

	import macromedia.asc.util.ByteList;

	import java.util.StringTokenizer;

	public class SwfMaker
	{
	public static final int stagShowFrame = 1;
	public static final int stagEnableDebugger2 = 64; // this movie may be debugged
	public static final int stagDebugID = 63; // unique ID to match up swf with swd
	public static final int stagFileAttributes = 69;
	public static final int stagDoABC = 72;
	public static final int stagSymbolClass = 76;
	public static final int stagEnableTelemetry = 93;


	// Flags for stagFileAttributes
	public static final int swfFlagsUseNetwork = 0x00000001; // when this SWF is local, give it network access instead of local access
	public static final int swfFlagsSwfRelativeUrls = 0x00000002; // relative URL paths in this SWF are relative to SWF location rather than browser location
	public static final int swfFlagsNoCrossdomainCache = 0x00000004; // do not add this SWF to the Asset Cache
	public static final int swfFlagsAS3 = 0x00000008; // this SWF contains AVM+ bytecodes
	public static final int swfFlagsHasMetadata = 0x00000010; // this SWF contains stagMetadata somewhere
	public static final int swfFlagsBrokerLocalConnection = 0x00004000; // broker local connections
	public static final int swfFlagsBrokerProductManager = 0x00008000; // broker product manager
	// (this is not relevant to the player, but is relevant to search engines)
	public static final int kDefaultSwfFlags = 0x00000000; // these flags are assumed when no stagFileAttributes is present

	private int CoreAbs(int x) { return (x<0) ? (-x) : x; }

	class SRECT
	{
	public int xmin;
	public int xmax;
	public int ymin;
	public int ymax;
	};

	int bitPos;
	int bitBuf;
	ByteList buffer = new ByteList();

	int pos;
	int tagCode;
	int tagPos;
	int tagLen;
	boolean tagIsBig;
	int swf_version;

	SwfMaker()
	{
	pos = 0;
	tagCode = 0;
	tagPos = 0;
	tagLen = 0;
	tagIsBig = false;
	swf_version = 9;
	}

	void SetPos(int pos)
	{
	this.pos = pos;
	}

	void CheckSpace(int count)
	{
	buffer.resize(pos+count);
	}

	void PutData(byte data[])
	{
	CheckSpace(data.length);
	for (int i=0; i<data.length; i++) {
	buffer.set(pos++, data[i]);
	}
	}

	void PutByte(byte b)
	{
	CheckSpace(1);
	buffer.set(pos++, b);
	}

	void PutString(String str)
	{
	PutData(str.getBytes());
	PutByte((byte)0);
	}

	void PutWord(int d)
	{
	CheckSpace(2);
	buffer.set(pos++, (byte)d);
	buffer.set(pos++, (byte)(d>>8));
	}

	void PutDWord(int d)
	{
	CheckSpace(4);
	buffer.set(pos++, (byte)d);
	buffer.set(pos++, (byte)(d>>8));
	buffer.set(pos++, (byte)(d>>16));
	buffer.set(pos++, (byte)(d>>24));
	}

	void StartTag(int code, boolean isBig)
	{
	//assert(tagCode==0);

	tagCode = code;
	tagPos = pos;
	tagIsBig = isBig;

	PutWord(0);
	if ( isBig )
	PutDWord(0);
	}

	void FinishTag()
	{
	int savePos = pos;
	int tagLen = pos - tagPos - (tagIsBig ? 6 : 2);
	pos = tagPos;

	if (tagIsBig) {
	PutWord((short)((tagCode<<6) \| 0x3f));
	PutDWord(tagLen);
	} else {
	//assert(tagLen < 0x3f);
	PutWord((short)((tagCode<<6) \| tagLen));
	}
	pos = savePos;
	tagCode = 0;
	}

	int CountBits(int v)
	{
	int n = 0;
	while ( (v & ~0xF) != 0 ) {
	v >>= 4;
	n += 4;
	}
	while ( v != 0 ) {
	v >>= 1;
	n++;
	}
	return n;
	}

	int CheckMag(int v, int mag)
	{
	if ( v < 0 ) v = -v;
	return v > mag ? v : mag;
	}

	void InitBits()
	{
	bitPos = 8;
	bitBuf = 0;
	}

	void FlushBits()
	{
	if ( bitPos < 8 )
	PutByte((byte)bitBuf);
	}

	void PutBits(int v, int n)
	{
	if ( n <= 0 )
	return;
	for (;;) {
	v &= 0xFFFFFFFF >> (32-n); // mask off any extra bits, note this does not work for n == 0, hence check for zero above
	int s = n - bitPos; // The number of bits more than the buffer will hold
	if ( s <= 0 ) {
	// This fits in the buffer, add it and finish
	bitBuf \|= v << -s;
	bitPos -= n; // we used x bits in the buffer
	return;
	} else {
	// This fills the buffer, fill the remaining space and try again
	bitBuf \|= v >> s;
	n -= bitPos; // we places x bits in the buffer
	PutByte((byte)bitBuf);
	bitBuf = 0;
	bitPos = 8;
	}
	}
	}

	void PutRect(SRECT r)
	{
	InitBits();

	int mag = CheckMag(r.xmin, CheckMag(r.xmax, CheckMag(r.ymin, CoreAbs(r.ymax))));
	int nBits = CountBits(mag)+1; // include a sign bit

	if (nBits<15) nBits = 15;

	PutBits(nBits, 5);
	PutBits(r.xmin, nBits);
	PutBits(r.xmax, nBits);
	PutBits(r.ymin, nBits);
	PutBits(r.ymax, nBits);

	FlushBits();
	}

	public boolean EncodeABC(ByteList abcData,
	String options)
	{
	String className = null;
	int width, height, fps = 12;
	int useNetwork=0;
	int brokerLocalConnection=0;
	int brokerProductManager=0;

	boolean debug = false;
	int dAt = options.indexOf(",-g");
	if (dAt > -1)
	{
	// strip it and enable debugger tag
	debug = true;
	options = options.substring(0, dAt) + options.substring(dAt+3);
	}
	dAt = options.indexOf(",-usenetwork");
	if (dAt>-1) {
	useNetwork=swfFlagsUseNetwork;
	options = options.substring(0, dAt) + options.substring(dAt+12);
	}
	dAt = options.indexOf(",-brokerLocalConnection");
	if (dAt>-1) {
	brokerLocalConnection=swfFlagsBrokerLocalConnection;
	options = options.substring(0, dAt) + options.substring(dAt+23);
	}
	dAt = options.indexOf(",-brokerProductManager");
	if (dAt>-1) {
	brokerProductManager=swfFlagsBrokerProductManager;
	options = options.substring(0, dAt) + options.substring(dAt+22);
	}

	StringTokenizer tokenizer = new StringTokenizer(options, ",");
	switch (tokenizer.countTokens())
	{
	case 2:
	width = Integer.parseInt(tokenizer.nextToken());
	height = Integer.parseInt(tokenizer.nextToken());
	break;
	case 3:
	className = tokenizer.nextToken();
	width = Integer.parseInt(tokenizer.nextToken());
	height = Integer.parseInt(tokenizer.nextToken());
	break;
	case 4:
	className = tokenizer.nextToken();
	width = Integer.parseInt(tokenizer.nextToken());
	height = Integer.parseInt(tokenizer.nextToken());
	fps = Integer.parseInt(tokenizer.nextToken());
	break;
	default:
	return false;
	}

	PutByte((byte)'F');
	PutByte((byte)'W');
	PutByte((byte)'S');
	PutByte((byte)swf_version);
	PutDWord(0);

	SRECT bounds = new SRECT();
	bounds.xmin = 0;
	bounds.ymin = 0;
	bounds.xmax = width*20;
	bounds.ymax = height*20;
	PutRect(bounds);
	PutWord(fps<<8); // frame rate
	PutWord(1); // # of frames SDD ### Change to sensicle number

	StartTag(stagFileAttributes, false);
	PutDWord(swfFlagsAS3\|useNetwork\|brokerLocalConnection\|brokerProductManager);
	FinishTag();

	if (debug)
	{
	StartTag(stagEnableDebugger2, false);
	PutWord(0x1975);
	PutString("");
	FinishTag();

	StartTag(stagDebugID, false);
	PutData( new byte[] { (byte)0xCA, (byte)0x49, (byte)0x96, (byte)0xC7,
	(byte)0x57, (byte)0x8E, (byte)0x20, (byte)0x02,
	(byte)0xDD, (byte)0x92, (byte)0xA6, (byte)0x3F,
	(byte)0x18, (byte)0x78, (byte)0xC5, (byte)0xBC } );
	FinishTag();
	}

	StartTag(stagDoABC, true);
	PutData(abcData.toByteArray());
	FinishTag();

	if (className != null)
	{
	StartTag(stagSymbolClass, false);
	PutWord(1);
	PutWord(0);
	PutString(className);
	FinishTag();
	}

	// Show Frame
	StartTag(stagShowFrame, false);
	FinishTag();

	// Set the length
	int size = pos;
	SetPos(4);
	PutDWord(size);

	return true;
	}
	};