huffcodetab.java

java处理声音文件

	{0,100},{4,1},{2,1},{0,114},{0,39},{4,1},{2,1},{0,70},{0,101},{0,115},
	{10,1},{6,1},{2,1},{0,55},{2,1},{0,86},{0,8},{2,1},{0,128},{0,129},
	{6,1},{2,1},{0,24},{2,1},{0,116},{0,71},{2,1},{0,130},{2,1},{0,40},
	{0,102},{24,1},{14,1},{8,1},{4,1},{2,1},{0,131},{0,56},{2,1},{0,117},
	{0,132},{4,1},{2,1},{0,72},{0,144},{0,145},{6,1},{2,1},{0,25},{2,1},
	{0,9},{0,118},{2,1},{0,146},{0,41},{14,1},{8,1},{4,1},{2,1},{0,133},
	{0,88},{2,1},{0,147},{0,57},{4,1},{2,1},{0,160},{0,10},{0,26},{8,1},
	{2,1},{0,162},{2,1},{0,103},{2,1},{0,87},{0,73},{6,1},{2,1},{0,148},
	{2,1},{0,119},{0,134},{2,1},{0,161},{2,1},{0,104},{0,149},{220,1},{126,1},
	{50,1},{26,1},{12,1},{6,1},{2,1},{0,42},{2,1},{0,89},{0,58},{2,1},
	{0,163},{2,1},{0,135},{0,120},{8,1},{4,1},{2,1},{0,164},{0,74},{2,1},
	{0,150},{0,105},{4,1},{2,1},{0,176},{0,11},{0,177},{10,1},{4,1},{2,1},
	{0,27},{0,178},{2,1},{0,43},{2,1},{0,165},{0,90},{6,1},{2,1},{0,179},
	{2,1},{0,166},{0,106},{4,1},{2,1},{0,180},{0,75},{2,1},{0,12},{0,193},
	{30,1},{14,1},{6,1},{4,1},{2,1},{0,181},{0,194},{0,44},{4,1},{2,1},
	{0,167},{0,195},{2,1},{0,107},{0,196},{8,1},{2,1},{0,29},{4,1},{2,1},
	{0,136},{0,151},{0,59},{4,1},{2,1},{0,209},{0,210},{2,1},{0,45},{0,211},
	{18,1},{6,1},{4,1},{2,1},{0,30},{0,46},{0,226},{6,1},{4,1},{2,1},
	{0,121},{0,152},{0,192},{2,1},{0,28},{2,1},{0,137},{0,91},{14,1},{6,1},
	{2,1},{0,60},{2,1},{0,122},{0,182},{4,1},{2,1},{0,76},{0,153},{2,1},
	{0,168},{0,138},{6,1},{2,1},{0,13},{2,1},{0,197},{0,92},{4,1},{2,1},
	{0,61},{0,198},{2,1},{0,108},{0,154},{88,1},{86,1},{36,1},{16,1},{8,1},
	{4,1},{2,1},{0,139},{0,77},{2,1},{0,199},{0,124},{4,1},{2,1},{0,213},
	{0,93},{2,1},{0,224},{0,14},{8,1},{2,1},{0,227},{4,1},{2,1},{0,208},
	{0,183},{0,123},{6,1},{4,1},{2,1},{0,169},{0,184},{0,212},{2,1},{0,225},
	{2,1},{0,170},{0,185},{24,1},{10,1},{6,1},{4,1},{2,1},{0,155},{0,214},
	{0,109},{2,1},{0,62},{0,200},{6,1},{4,1},{2,1},{0,140},{0,228},{0,78},
	{4,1},{2,1},{0,215},{0,229},{2,1},{0,186},{0,171},{12,1},{4,1},{2,1},
	{0,156},{0,230},{4,1},{2,1},{0,110},{0,216},{2,1},{0,141},{0,187},{8,1},
	{4,1},{2,1},{0,231},{0,157},{2,1},{0,232},{0,142},{4,1},{2,1},{0,203},
	{0,188},{0,158},{0,241},{2,1},{0,31},{2,1},{0,15},{0,47},{66,1},{56,1},
	{2,1},{0,242},{52,1},{50,1},{20,1},{8,1},{2,1},{0,189},{2,1},{0,94},
	{2,1},{0,125},{0,201},{6,1},{2,1},{0,202},{2,1},{0,172},{0,126},{4,1},
	{2,1},{0,218},{0,173},{0,204},{10,1},{6,1},{2,1},{0,174},{2,1},{0,219},
	{0,220},{2,1},{0,205},{0,190},{6,1},{4,1},{2,1},{0,235},{0,237},{0,238},
	{6,1},{4,1},{2,1},{0,217},{0,234},{0,233},{2,1},{0,222},{4,1},{2,1},
	{0,221},{0,236},{0,206},{0,63},{0,240},{4,1},{2,1},{0,243},{0,244},{2,1},
	{0,79},{2,1},{0,245},{0,95},{10,1},{2,1},{0,255},{4,1},{2,1},{0,246},
	{0,111},{2,1},{0,247},{0,127},{12,1},{6,1},{2,1},{0,143},{2,1},{0,248},
	{0,249},{4,1},{2,1},{0,159},{0,250},{0,175},{8,1},{4,1},{2,1},{0,251},
	{0,191},{2,1},{0,252},{0,207},{4,1},{2,1},{0,253},{0,223},{2,1},{0,254},
	{0,239},
	};
	
  private static int ValTab24[][] = {
	{60,1},{8,1},{4,1},{2,1},{0,0},{0,16},{2,1},{0,1},{0,17},{14,1},
	{6,1},{4,1},{2,1},{0,32},{0,2},{0,33},{2,1},{0,18},{2,1},{0,34},
	{2,1},{0,48},{0,3},{14,1},{4,1},{2,1},{0,49},{0,19},{4,1},{2,1},
	{0,50},{0,35},{4,1},{2,1},{0,64},{0,4},{0,65},{8,1},{4,1},{2,1},
	{0,20},{0,51},{2,1},{0,66},{0,36},{6,1},{4,1},{2,1},{0,67},{0,52},
	{0,81},{6,1},{4,1},{2,1},{0,80},{0,5},{0,21},{2,1},{0,82},{0,37},
	{250,1},{98,1},{34,1},{18,1},{10,1},{4,1},{2,1},{0,68},{0,83},{2,1},
	{0,53},{2,1},{0,96},{0,6},{4,1},{2,1},{0,97},{0,22},{2,1},{0,98},
	{0,38},{8,1},{4,1},{2,1},{0,84},{0,69},{2,1},{0,99},{0,54},{4,1},
	{2,1},{0,113},{0,85},{2,1},{0,100},{0,70},{32,1},{14,1},{6,1},{2,1},
	{0,114},{2,1},{0,39},{0,55},{2,1},{0,115},{4,1},{2,1},{0,112},{0,7},
	{0,23},{10,1},{4,1},{2,1},{0,101},{0,86},{4,1},{2,1},{0,128},{0,8},
	{0,129},{4,1},{2,1},{0,116},{0,71},{2,1},{0,24},{0,130},{16,1},{8,1},
	{4,1},{2,1},{0,40},{0,102},{2,1},{0,131},{0,56},{4,1},{2,1},{0,117},
	{0,87},{2,1},{0,132},{0,72},{8,1},{4,1},{2,1},{0,145},{0,25},{2,1},
	{0,146},{0,118},{4,1},{2,1},{0,103},{0,41},{2,1},{0,133},{0,88},{92,1},
	{34,1},{16,1},{8,1},{4,1},{2,1},{0,147},{0,57},{2,1},{0,148},{0,73},
	{4,1},{2,1},{0,119},{0,134},{2,1},{0,104},{0,161},{8,1},{4,1},{2,1},
	{0,162},{0,42},{2,1},{0,149},{0,89},{4,1},{2,1},{0,163},{0,58},{2,1},
	{0,135},{2,1},{0,120},{0,74},{22,1},{12,1},{4,1},{2,1},{0,164},{0,150},
	{4,1},{2,1},{0,105},{0,177},{2,1},{0,27},{0,165},{6,1},{2,1},{0,178},
	{2,1},{0,90},{0,43},{2,1},{0,136},{0,179},{16,1},{10,1},{6,1},{2,1},
	{0,144},{2,1},{0,9},{0,160},{2,1},{0,151},{0,121},{4,1},{2,1},{0,166},
	{0,106},{0,180},{12,1},{6,1},{2,1},{0,26},{2,1},{0,10},{0,176},{2,1},
	{0,59},{2,1},{0,11},{0,192},{4,1},{2,1},{0,75},{0,193},{2,1},{0,152},
	{0,137},{67,1},{34,1},{16,1},{8,1},{4,1},{2,1},{0,28},{0,181},{2,1},
	{0,91},{0,194},{4,1},{2,1},{0,44},{0,167},{2,1},{0,122},{0,195},{10,1},
	{6,1},{2,1},{0,60},{2,1},{0,12},{0,208},{2,1},{0,182},{0,107},{4,1},
	{2,1},{0,196},{0,76},{2,1},{0,153},{0,168},{16,1},{8,1},{4,1},{2,1},
	{0,138},{0,197},{2,1},{0,92},{0,209},{4,1},{2,1},{0,183},{0,123},{2,1},
	{0,29},{0,210},{9,1},{4,1},{2,1},{0,45},{0,211},{2,1},{0,61},{0,198},
	{85,250},{4,1},{2,1},{0,108},{0,169},{2,1},{0,154},{0,212},{32,1},{16,1},
	{8,1},{4,1},{2,1},{0,184},{0,139},{2,1},{0,77},{0,199},{4,1},{2,1},
	{0,124},{0,213},{2,1},{0,93},{0,225},{8,1},{4,1},{2,1},{0,30},{0,226},
	{2,1},{0,170},{0,185},{4,1},{2,1},{0,155},{0,227},{2,1},{0,214},{0,109},
	{20,1},{10,1},{6,1},{2,1},{0,62},{2,1},{0,46},{0,78},{2,1},{0,200},
	{0,140},{4,1},{2,1},{0,228},{0,215},{4,1},{2,1},{0,125},{0,171},{0,229},
	{10,1},{4,1},{2,1},{0,186},{0,94},{2,1},{0,201},{2,1},{0,156},{0,110},
	{8,1},{2,1},{0,230},{2,1},{0,13},{2,1},{0,224},{0,14},{4,1},{2,1},
	{0,216},{0,141},{2,1},{0,187},{0,202},{74,1},{2,1},{0,255},{64,1},{58,1},
	{32,1},{16,1},{8,1},{4,1},{2,1},{0,172},{0,231},{2,1},{0,126},{0,217},
	{4,1},{2,1},{0,157},{0,232},{2,1},{0,142},{0,203},{8,1},{4,1},{2,1},
	{0,188},{0,218},{2,1},{0,173},{0,233},{4,1},{2,1},{0,158},{0,204},{2,1},
	{0,219},{0,189},{16,1},{8,1},{4,1},{2,1},{0,234},{0,174},{2,1},{0,220},
	{0,205},{4,1},{2,1},{0,235},{0,190},{2,1},{0,221},{0,236},{8,1},{4,1},
	{2,1},{0,206},{0,237},{2,1},{0,222},{0,238},{0,15},{4,1},{2,1},{0,240},
	{0,31},{0,241},{4,1},{2,1},{0,242},{0,47},{2,1},{0,243},{0,63},{18,1},
	{8,1},{4,1},{2,1},{0,244},{0,79},{2,1},{0,245},{0,95},{4,1},{2,1},
	{0,246},{0,111},{2,1},{0,247},{2,1},{0,127},{0,143},{10,1},{4,1},{2,1},
	{0,248},{0,249},{4,1},{2,1},{0,159},{0,175},{0,250},{8,1},{4,1},{2,1},
	{0,251},{0,191},{2,1},{0,252},{0,207},{4,1},{2,1},{0,253},{0,223},{2,1},
	{0,254},{0,239},
	};
	
  private static int ValTab32[][] = {
	{2,1},{0,0},{8,1},{4,1},{2,1},{0,8},{0,4},{2,1},{0,1},{0,2},
	{8,1},{4,1},{2,1},{0,12},{0,10},{2,1},{0,3},{0,6},{6,1},{2,1},
	{0,9},{2,1},{0,5},{0,7},{4,1},{2,1},{0,14},{0,13},{2,1},{0,15},
	{0,11},
	};

  private static int ValTab33[][] = {
	{16,1},{8,1},{4,1},{2,1},{0,0},{0,1},{2,1},{0,2},{0,3},{4,1},
	{2,1},{0,4},{0,5},{2,1},{0,6},{0,7},{8,1},{4,1},{2,1},{0,8},
	{0,9},{2,1},{0,10},{0,11},{4,1},{2,1},{0,12},{0,13},{2,1},{0,14},
	{0,15},
	};


  public static huffcodetab[]  ht = null;     /* Simulate extern struct                 */

  private static int[] bitbuf = new int[32];
  
  /**
   * Big Constructor : Computes all Huffman Tables.
   */
  private huffcodetab(String S,int XLEN, int YLEN, int LINBITS, int LINMAX, int REF,
                     int[] TABLE, int[] HLEN, int[][] VAL, int TREELEN)                     
  {
    tablename0 = S.charAt(0);
	tablename1 = S.charAt(1);
	tablename2 = S.charAt(2);
    xlen = XLEN;
    ylen = YLEN;
    linbits = LINBITS;
    linmax = LINMAX;
    ref = REF;
    table = TABLE;
    hlen = HLEN;
    val = VAL;
    treelen = TREELEN;
  }

  
  
  /**
   * Do the huffman-decoding.
   * note! for counta,countb -the 4 bit value is returned in y,
   * discard x.
   */
  public static int huffman_decoder(huffcodetab h, int[] x, int[] y, int[] v, int[] w, BitReserve br)
  {
	// array of all huffcodtable headers
	// 0..31 Huffman code table 0..31
	// 32,33 count1-tables

	int dmask = 1 << ((4 * 8) - 1);
	int hs    = 4 * 8;
  	int level;
  	int point = 0;
  	int error = 1;
  	level = dmask;

  	if (h.val == null) return 2;

     /* table 0 needs no bits */
     if ( h.treelen == 0)
	 { 
	   x[0] = y[0] = 0;
	   return 0;
     }

     /* Lookup in Huffman table. */

	 /*int bitsAvailable = 0;	 
	 int bitIndex = 0;
	 
	 int bits[] = bitbuf;*/
   	 do 
	 {
	    if (h.val[point][0]==0)
		{   /*end of tree*/
		   x[0] = h.val[point][1] >>> 4;
		   y[0] = h.val[point][1] & 0xf;
		   error = 0;
		   break;
 	    }
	    
		// hget1bit() is called thousands of times, and so needs to be
		// ultra fast. 
		/*
		if (bitIndex==bitsAvailable)
		{
			bitsAvailable = br.readBits(bits, 32);			
			bitIndex = 0;
		}
		*/
		//if (bits[bitIndex++]!=0)
		if (br.hget1bit()!=0)
		{
		   while (h.val[point][1] >= MXOFF) point += h.val[point][1];
		   point += h.val[point][1];
	    }
	    else
		{
		   while (h.val[point][0] >= MXOFF) point += h.val[point][0];
		   point += h.val[point][0];
	    }
	    level >>>= 1;
		// MDM: ht[0] is always 0;
	 } while ((level !=0 )  || (point < 0 /*ht[0].treelen*/) );
		
		// put back any bits not consumed
	/*	
	 int unread = (bitsAvailable-bitIndex);
		if (unread>0)
			br.rewindNbits(unread);
	 */
  	  /* Process sign encodings for quadruples tables. */
      // System.out.println(h.tablename);
  	  if (h.tablename0 == '3' && (h.tablename1 == '2' || h.tablename1 == '3'))
	  {
	  	v[0] = (y[0]>>3) & 1;
	  	w[0] = (y[0]>>2) & 1;
	  	x[0] = (y[0]>>1) & 1;
	  	y[0] = y[0] & 1;

	    /* v, w, x and y are reversed in the bitstream.
		  switch them around to make test bistream work. */

	  	if (v[0]!=0)
  		  if (br.hget1bit() != 0) v[0] = -v[0];
	  	if (w[0]!=0)
		  if (br.hget1bit() != 0) w[0] = -w[0];
	  	if (x[0]!=0)
		  if (br.hget1bit() != 0) x[0] = -x[0];
	  	if (y[0]!=0)
		  if (br.hget1bit() != 0) y[0] = -y[0];
       }
	   else
	   {
		  // Process sign and escape encodings for dual tables.
		  // x and y are reversed in the test bitstream.
		  // Reverse x and y here to make test bitstream work.

	      if (h.linbits != 0)
		   if ((h.xlen-1) == x[0])
			x[0] += br.hgetbits(h.linbits);
	  	  if (x[0] != 0)
			  if (br.hget1bit() != 0) x[0] = -x[0];
	  	  if (h.linbits != 0)
			 if ((h.ylen-1) == y[0])
				y[0] += br.hgetbits(h.linbits);
	  	  if (y[0] != 0)
			  if (br.hget1bit() != 0) y[0] = -y[0];
	   }
  	   return error;
  }

  public static void inithuff()
  {
	
	if (ht!=null)
		return;
	
	ht = new huffcodetab[HTN];
    ht[0] = new huffcodetab("0  ",0,0,0,0,-1,null,null,ValTab0,0);
    ht[1] = new huffcodetab("1  ",2,2,0,0,-1,null,null,ValTab1,7);
    ht[2] = new huffcodetab("2  ",3,3,0,0,-1,null,null,ValTab2,17);
    ht[3] = new huffcodetab("3  ",3,3,0,0,-1,null,null,ValTab3,17);
    ht[4] = new huffcodetab("4  ",0,0,0,0,-1,null,null,ValTab4,0);    
    ht[5] = new huffcodetab("5  ",4,4,0,0,-1,null,null,ValTab5,31);
    ht[6] = new huffcodetab("6  ",4,4,0,0,-1,null,null,ValTab6,31);
    ht[7] = new huffcodetab("7  ",6,6,0,0,-1,null,null,ValTab7,71);
    ht[8] = new huffcodetab("8  ",6,6,0,0,-1,null,null,ValTab8,71);
    ht[9] = new huffcodetab("9  ",6,6,0,0,-1,null,null,ValTab9,71);
    ht[10] = new huffcodetab("10 ",8,8,0,0,-1,null,null,ValTab10,127);  
    ht[11] = new huffcodetab("11 ",8,8,0,0,-1,null,null,ValTab11,127);
    ht[12] = new huffcodetab("12 ",8,8,0,0,-1,null,null,ValTab12,127);
    ht[13] = new huffcodetab("13 ",16,16,0,0,-1,null,null,ValTab13,511);
    ht[14] = new huffcodetab("14 ",0,0,0,0,-1,null,null,ValTab14,0);
    ht[15] = new huffcodetab("15 ",16,16,0,0,-1,null,null,ValTab15,511);
    ht[16] = new huffcodetab("16 ",16,16,1,1,-1,null,null,ValTab16,511);
    ht[17] = new huffcodetab("17 ",16,16,2,3,16,null,null,ValTab16,511);
    ht[18] = new huffcodetab("18 ",16,16,3,7,16,null,null,ValTab16,511);
    ht[19] = new huffcodetab("19 ",16,16,4,15,16,null,null,ValTab16,511);
    ht[20] = new huffcodetab("20 ",16,16,6,63,16,null,null,ValTab16,511);
    ht[21] = new huffcodetab("21 ",16,16,8,255,16,null,null,ValTab16,511);
    ht[22] = new huffcodetab("22 ",16,16,10,1023,16,null,null,ValTab16,511);
    ht[23] = new huffcodetab("23 ",16,16,13,8191,16,null,null,ValTab16,511);
    ht[24] = new huffcodetab("24 ",16,16,4,15,-1,null,null,ValTab24,512);
    ht[25] = new huffcodetab("25 ",16,16,5,31,24,null,null,ValTab24,512);
    ht[26] = new huffcodetab("26 ",16,16,6,63,24,null,null,ValTab24,512);
    ht[27] = new huffcodetab("27 ",16,16,7,127,24,null,null,ValTab24,512);
	ht[28] = new huffcodetab("28 ",16,16,8,255,24,null,null,ValTab24,512);  
    ht[29] = new huffcodetab("29 ",16,16,9,511,24,null,null,ValTab24,512);
    ht[30] = new huffcodetab("30 ",16,16,11,2047,24,null,null,ValTab24,512);
    ht[31] = new huffcodetab("31 ",16,16,13,8191,24,null,null,ValTab24,512);
    ht[32] = new huffcodetab("32 ",1,16,0,0,-1,null,null,ValTab32,31);
    ht[33] = new huffcodetab("33 ",1,16,0,0,-1,null,null,ValTab33,31);
  }
}