From 42995d7bf396933ee60c5f89c354ea89cf13df0d Mon Sep 17 00:00:00 2001 From: tpearson Date: Tue, 5 Jan 2010 00:01:18 +0000 Subject: Copy of aRts for Trinity modifications git-svn-id: svn://anonsvn.kde.org/home/kde/branches/trinity/dependencies/arts@1070145 283d02a7-25f6-0310-bc7c-ecb5cbfe19da --- flow/synth_frequency_impl.cc | 70 ++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 70 insertions(+) create mode 100644 flow/synth_frequency_impl.cc (limited to 'flow/synth_frequency_impl.cc') diff --git a/flow/synth_frequency_impl.cc b/flow/synth_frequency_impl.cc new file mode 100644 index 0000000..1c0bbbe --- /dev/null +++ b/flow/synth_frequency_impl.cc @@ -0,0 +1,70 @@ + /* + + Copyright (C) 2000 Stefan Westerfeld + stefan@space.twc.de + + This library is free software; you can redistribute it and/or + modify it under the terms of the GNU Library General Public + License as published by the Free Software Foundation; either + version 2 of the License, or (at your option) any later version. + + This library 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 + Library General Public License for more details. + + You should have received a copy of the GNU Library General Public License + along with this library; see the file COPYING.LIB. If not, write to + the Free Software Foundation, Inc., 59 Temple Place - Suite 330, + Boston, MA 02111-1307, USA. + + */ + +#include "artsflow.h" +#include "stdsynthmodule.h" +#include +#include + +using namespace Arts; + +namespace Arts { + +class Synth_FREQUENCY_impl :public Synth_FREQUENCY_skel, public StdSynthModule +{ + float fpos; +public: + void streamInit() { + fpos = 0; + } + void calculateBlock(unsigned long cycles) { + float fsample = samplingRateFloat; + float finc = *frequency/fsample; + + while(cycles) + { + if(cycles >= 8 && ((finc*8+fpos) < 0.9)) + { + fpos += finc; *pos++ = fpos; + fpos += finc; *pos++ = fpos; + fpos += finc; *pos++ = fpos; + fpos += finc; *pos++ = fpos; + fpos += finc; *pos++ = fpos; + fpos += finc; *pos++ = fpos; + fpos += finc; *pos++ = fpos; + fpos += finc; *pos++ = fpos; + cycles -= 8; + } + else + { + fpos += finc; + fpos -= floor(fpos); + *pos++ = fpos; + cycles--; + } + } + } +}; + +REGISTER_IMPLEMENTATION(Synth_FREQUENCY_impl); + +} -- cgit v1.2.1