Chris@1: #!/usr/bin/perl
Chris@1: print <<'EOD';
Chris@1: /********************************************************************
Chris@1:  *                                                                  *
Chris@1:  * THIS FILE IS PART OF THE OggVorbis SOFTWARE CODEC SOURCE CODE.   *
Chris@1:  * USE, DISTRIBUTION AND REPRODUCTION OF THIS LIBRARY SOURCE IS     *
Chris@1:  * GOVERNED BY A BSD-STYLE SOURCE LICENSE INCLUDED WITH THIS SOURCE *
Chris@1:  * IN 'COPYING'. PLEASE READ THESE TERMS BEFORE DISTRIBUTING.       *
Chris@1:  *                                                                  *
Chris@1:  * THE OggVorbis SOURCE CODE IS (C) COPYRIGHT 1994-2007             *
Chris@1:  * by the Xiph.Org Foundation http://www.xiph.org/                  *
Chris@1:  *                                                                  *
Chris@1:  ********************************************************************
Chris@1: 
Chris@1:   function: lookup data; generated by lookups.pl; edit there
Chris@1:   last mod: $Id: lookups.pl 13293 2007-07-24 00:09:47Z xiphmont $
Chris@1: 
Chris@1:  ********************************************************************/
Chris@1: 
Chris@1: #ifndef _V_LOOKUP_DATA_H_
Chris@1: 
Chris@1: #ifdef FLOAT_LOOKUP
Chris@1: EOD
Chris@1: 
Chris@1: $cos_sz=128;
Chris@1: $invsq_sz=32;
Chris@1: $invsq2exp_min=-32;
Chris@1: $invsq2exp_max=32;
Chris@1: 
Chris@1: $fromdB_sz=35;
Chris@1: $fromdB_shift=5;
Chris@1: $fromdB2_shift=3;
Chris@1: 
Chris@1: $invsq_i_shift=10;
Chris@1: $cos_i_shift=9;
Chris@1: $delta_shift=6;
Chris@1: 
Chris@1: print "#define COS_LOOKUP_SZ $cos_sz\n";
Chris@1: print "static float COS_LOOKUP[COS_LOOKUP_SZ+1]={\n";
Chris@1: 
Chris@1: for($i=0;$i<=$cos_sz;){
Chris@1:     print "\t";
Chris@1:     for($j=0;$j<4 && $i<=$cos_sz;$j++){
Chris@1: 	printf "%+.13f,", cos(3.14159265358979323846*($i++)/$cos_sz) ;
Chris@1:     }
Chris@1:     print "\n";
Chris@1: }
Chris@1: print "};\n\n";
Chris@1: 
Chris@1: print "#define INVSQ_LOOKUP_SZ $invsq_sz\n";
Chris@1: print "static float INVSQ_LOOKUP[INVSQ_LOOKUP_SZ+1]={\n";
Chris@1: 
Chris@1: for($i=0;$i<=$invsq_sz;){
Chris@1:     print "\t";
Chris@1:     for($j=0;$j<4 && $i<=$invsq_sz;$j++){
Chris@1: 	my$indexmap=$i++/$invsq_sz*.5+.5;
Chris@1: 	printf "%.12f,", 1./sqrt($indexmap);
Chris@1:     }
Chris@1:     print "\n";
Chris@1: }
Chris@1: print "};\n\n";
Chris@1: 
Chris@1: print "#define INVSQ2EXP_LOOKUP_MIN $invsq2exp_min\n";
Chris@1: print "#define INVSQ2EXP_LOOKUP_MAX $invsq2exp_max\n";
Chris@1: print "static float INVSQ2EXP_LOOKUP[INVSQ2EXP_LOOKUP_MAX-\\\n".
Chris@1:       "                              INVSQ2EXP_LOOKUP_MIN+1]={\n";
Chris@1: 
Chris@1: for($i=$invsq2exp_min;$i<=$invsq2exp_max;){
Chris@1:     print "\t";
Chris@1:     for($j=0;$j<4 && $i<=$invsq2exp_max;$j++){
Chris@1: 	printf "%15.10g,", 2**($i++*-.5);
Chris@1:     }
Chris@1:     print "\n";
Chris@1: }
Chris@1: print "};\n\n#endif\n\n";
Chris@1: 
Chris@1: 
Chris@1: # 0 to -140 dB
Chris@1: $fromdB2_sz=1<<$fromdB_shift;
Chris@1: $fromdB_gran=1<<($fromdB_shift-$fromdB2_shift);
Chris@1: print "#define FROMdB_LOOKUP_SZ $fromdB_sz\n";
Chris@1: print "#define FROMdB2_LOOKUP_SZ $fromdB2_sz\n";
Chris@1: print "#define FROMdB_SHIFT $fromdB_shift\n";
Chris@1: print "#define FROMdB2_SHIFT $fromdB2_shift\n";
Chris@1: print "#define FROMdB2_MASK ".((1<<$fromdB_shift)-1)."\n";
Chris@1: 
Chris@1: print "static float FROMdB_LOOKUP[FROMdB_LOOKUP_SZ]={\n";
Chris@1: 
Chris@1: for($i=0;$i<$fromdB_sz;){
Chris@1:     print "\t";
Chris@1:     for($j=0;$j<4 && $i<$fromdB_sz;$j++){
Chris@1: 	printf "%15.10g,", 10**(.05*(-$fromdB_gran*$i++));
Chris@1:     }
Chris@1:     print "\n";
Chris@1: }
Chris@1: print "};\n\n";
Chris@1: 
Chris@1: print "static float FROMdB2_LOOKUP[FROMdB2_LOOKUP_SZ]={\n";
Chris@1: 
Chris@1: for($i=0;$i<$fromdB2_sz;){
Chris@1:     print "\t";
Chris@1:     for($j=0;$j<4 && $i<$fromdB_sz;$j++){
Chris@1: 	printf "%15.10g,", 10**(.05*(-$fromdB_gran/$fromdB2_sz*(.5+$i++)));
Chris@1:     }
Chris@1:     print "\n";
Chris@1: }
Chris@1: print "};\n\n#ifdef INT_LOOKUP\n\n";
Chris@1: 
Chris@1: 
Chris@1: $iisz=0x10000>>$invsq_i_shift;
Chris@1: print "#define INVSQ_LOOKUP_I_SHIFT $invsq_i_shift\n";
Chris@1: print "#define INVSQ_LOOKUP_I_MASK ".(0x0ffff>>(16-$invsq_i_shift))."\n";
Chris@1: print "static long INVSQ_LOOKUP_I[$iisz+1]={\n";
Chris@1: for($i=0;$i<=$iisz;){
Chris@1:     print "\t";
Chris@1:     for($j=0;$j<4 && $i<=$iisz;$j++){
Chris@1: 	my$indexmap=$i++/$iisz*.5+.5;
Chris@1: 	printf "%8d,", int(1./sqrt($indexmap)*65536.+.5);
Chris@1:     }
Chris@1:     print "\n";
Chris@1: }
Chris@1: print "};\n\n";
Chris@1: 
Chris@1: $cisz=0x10000>>$cos_i_shift;
Chris@1: print "#define COS_LOOKUP_I_SHIFT $cos_i_shift\n";
Chris@1: print "#define COS_LOOKUP_I_MASK ".(0x0ffff>>(16-$cos_i_shift))."\n";
Chris@1: print "#define COS_LOOKUP_I_SZ $cisz\n";
Chris@1: print "static long COS_LOOKUP_I[COS_LOOKUP_I_SZ+1]={\n";
Chris@1: 
Chris@1: for($i=0;$i<=$cisz;){
Chris@1:     print "\t";
Chris@1:     for($j=0;$j<4 && $i<=$cisz;$j++){
Chris@1: 	printf "%8d,", int(cos(3.14159265358979323846*($i++)/$cos_sz)*16384.+.5) ;
Chris@1:     }
Chris@1:     print "\n";
Chris@1: }
Chris@1: print "};\n\n";
Chris@1: 
Chris@1: 
Chris@1: print "#endif\n\n#endif\n";
Chris@1: 
Chris@1: