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authortoma <toma@283d02a7-25f6-0310-bc7c-ecb5cbfe19da>2009-11-25 17:56:58 +0000
committertoma <toma@283d02a7-25f6-0310-bc7c-ecb5cbfe19da>2009-11-25 17:56:58 +0000
commite2de64d6f1beb9e492daf5b886e19933c1fa41dd (patch)
tree9047cf9e6b5c43878d5bf82660adae77ceee097a /arts/modules/synth/synth_sequence_impl.cc
downloadtdemultimedia-e2de64d6f1beb9e492daf5b886e19933c1fa41dd.tar.gz
tdemultimedia-e2de64d6f1beb9e492daf5b886e19933c1fa41dd.zip
Copy the KDE 3.5 branch to branches/trinity for new KDE 3.5 features.
BUG:215923 git-svn-id: svn://anonsvn.kde.org/home/kde/branches/trinity/kdemultimedia@1054174 283d02a7-25f6-0310-bc7c-ecb5cbfe19da
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+ /*
+
+ Copyright (C) 2000 Jeff Tranter
+ tranter@pobox.com
+
+ (C) 1999 Stefan Westerfeld
+ stefan@space.twc.de
+
+ (C) 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 as published by
+ the Free Software Foundation; either version 2 of the License, or
+ (at your option) any later version.
+
+ 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 <string.h>
+#include "artsmodulessynth.h"
+#include "stdsynthmodule.h"
+
+using namespace std;
+using namespace Arts;
+
+class Synth_SEQUENCE_impl : virtual public Synth_SEQUENCE_skel,
+ virtual public StdSynthModule
+{
+protected:
+ float _speed;
+ string _seq;
+ long posn, delay;
+ float *fsequence;
+ float *slen;
+
+public:
+ Synth_SEQUENCE_impl()
+ : _speed( 1 )
+ , fsequence( 0 )
+ , slen( 0 )
+ {
+ }
+
+ ~Synth_SEQUENCE_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; }
+
+ void streamInit()
+ {
+ char notea[][4]= {"C-", "C#", "D-", "D#", "E-", "F-", "F#", "G-", "G#", "A-", "A#-", "B-", "\0"};
+ char noteb[][3]= {"C-", "Db", "D-", "Eb", "E-", "F-", "Gb", "G-", "Ab", "A-", "Bb", "B-", "\0"};
+ float freq[] = {261.7,277.2,293.7,311.2,329.7,349.3,370.0,392.0,415.3,440.0, 466.2, 493.9, 0 };
+ float zhoch[] = {1,2,4,8,16,32,64,128,256};
+ int s = 0, i, oktave;
+ char *nptr;
+ float f;
+ char buffer[1024];
+
+ strncpy(buffer, _seq.c_str(), 1023);
+ buffer[ 1023 ] = '\0';
+ long bufferlen = strlen(buffer);
+ delete[] fsequence;
+ delete[] slen;
+ fsequence = new float[ bufferlen ];
+ slen = new float[ bufferlen ];
+ nptr = strtok(buffer, ",;");
+ while (nptr)
+ {
+ if (nptr[3] == ':')
+ slen[s] = atof(&nptr[4]);
+ else
+ slen[s] = 1;
+ fprintf(stderr," <%d> %s\n", s, nptr);
+ oktave = atol(&nptr[2]);
+ nptr[2] = 0;
+ f = 0;
+ for (i=0; notea[i][0]; i++)
+ if (strcmp(nptr,notea[i]) == 0)
+ f = freq[i];
+ for (i=0; noteb[i][0]; i++)
+ if (strcmp(nptr, noteb[i]) == 0)
+ f = freq[i];
+ f *= zhoch[oktave] / zhoch[4];
+ fsequence[s++] = f;
+ fprintf(stderr, ">%2.2f\n", f);
+ nptr = strtok(NULL,",;");
+ }
+ fsequence[s] = 0;
+ 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] == 0)
+ posn = 0;
+ delay = 0;
+ }
+ pos[i] = (int)delay / (_speed * samplingRate * slen[posn]);
+ frequency[i] = fsequence[posn];
+ }
+ }
+
+};
+
+REGISTER_IMPLEMENTATION(Synth_SEQUENCE_impl);
+// vim: sw=4 ts=4 noet