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-rw-r--r--arts/modules/synth/synth_sequence_freq_impl.cc131
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diff --git a/arts/modules/synth/synth_sequence_freq_impl.cc b/arts/modules/synth/synth_sequence_freq_impl.cc
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+/* This file is part of the KDE project
+ Copyright (C) 2000 Jeff Tranter <tranter@pobox.com>
+ 2003 Matthias Kretz <kretz@kde.org>
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License version 2
+ as published by the Free Software Foundation.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, write to the Free Software
+ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+
+*/
+
+#include <stdio.h>
+#include <stdlib.h>
+#include "artsmodulessynth.h"
+#include "stdsynthmodule.h"
+#include <debug.h>
+
+using namespace std;
+using namespace Arts;
+
+class Synth_SEQUENCE_FREQ_impl : virtual public Synth_SEQUENCE_FREQ_skel,
+ virtual public StdSynthModule
+{
+protected:
+ float _speed;
+ string _seq;
+ long posn, delay;
+ float *fsequence;
+ float *slen;
+
+public:
+ Synth_SEQUENCE_FREQ_impl()
+ : _speed( 1 )
+ , fsequence( 0 )
+ , slen( 0 )
+ {
+ }
+
+ ~Synth_SEQUENCE_FREQ_impl()
+ {
+ delete[] fsequence;
+ delete[] slen;
+ }
+
+ float speed() { return _speed; }
+ void speed(float newSpeed) { _speed = newSpeed; }
+
+ string seq() { return _seq; }
+ void seq(const string &newSeq)
+ {
+ _seq = newSeq;
+ parseSeqString();
+ }
+
+ void parseSeqString()
+ {
+ delete[] fsequence;
+ delete[] slen;
+
+ long bufferlen = _seq.length();
+ fsequence = new float[ bufferlen ];
+ slen = new float[ bufferlen ];
+
+ int i = 0;
+ int oldpos = 0;
+ int pos = _seq.find_first_of( ",;", 0 );
+ arts_debug( "tokenizer: parse %s", _seq.c_str() );
+ while( pos > 0 )
+ {
+ string token = _seq.substr( oldpos, pos - oldpos );
+ arts_debug( "tokenizer: pos = %d, oldpos = %d, token = %s", pos, oldpos, token.c_str() );
+ handleToken( token, i++ );
+ oldpos = pos + 1;
+ pos = _seq.find_first_of( ",;", oldpos );
+ }
+ string token = _seq.substr( oldpos, _seq.length() - oldpos );
+ arts_debug( "tokenizer: pos = %d, oldpos = %d, token = %s", pos, oldpos, token.c_str() );
+ handleToken( token, i++ );
+ fsequence[ i ] = -1.0;
+ }
+
+ void handleToken( const string & token, int i )
+ {
+ int colon = token.find( ':' );
+ if( colon > -1 )
+ {
+ slen[ i ] = atof( &token.c_str()[ colon + 1 ] );
+ fsequence[ i ] = atof( token.substr( 0, colon ).c_str() );
+ }
+ else
+ {
+ slen[ i ] = 1;
+ fsequence[ i ] = atof( token.c_str() );
+ }
+ }
+
+ void streamInit()
+ {
+ delay = 0;
+ posn = 0;
+ }
+
+ void calculateBlock(unsigned long samples)
+ {
+ for (unsigned int i=0; i < samples; i++)
+ {
+ delay++;
+ if (delay > _speed * samplingRate * slen[posn])
+ {
+ posn++;
+ if (fsequence[posn] == -1.0)
+ posn = 0;
+ delay = 0;
+ }
+ pos[i] = (int)delay / (_speed * samplingRate * slen[posn]);
+ frequency[i] = fsequence[posn];
+ }
+ }
+
+};
+
+REGISTER_IMPLEMENTATION(Synth_SEQUENCE_FREQ_impl);
+// vim: sw=4 ts=4 noet