diff options
author | Thomas Grill <xovo@users.sourceforge.net> | 2002-12-05 11:12:17 +0000 |
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committer | Thomas Grill <xovo@users.sourceforge.net> | 2002-12-05 11:12:17 +0000 |
commit | 420a758195fea188311fdcd24bff4be2c2afebfb (patch) | |
tree | 8d3ef9302ee44ee9563c2997a5625d6ad9bf352e /externals/grill/idelay/delay.cpp | |
parent | 60ee6bb60b11bbfbccf56f335c9c6213e6daa79d (diff) |
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svn path=/trunk/; revision=279
Diffstat (limited to 'externals/grill/idelay/delay.cpp')
-rw-r--r-- | externals/grill/idelay/delay.cpp | 75 |
1 files changed, 75 insertions, 0 deletions
diff --git a/externals/grill/idelay/delay.cpp b/externals/grill/idelay/delay.cpp new file mode 100644 index 00000000..b126ebce --- /dev/null +++ b/externals/grill/idelay/delay.cpp @@ -0,0 +1,75 @@ +/* + +idelay~ - interpolating delay using flext layer + +Copyright (c) 2002 Thomas Grill (xovo@gmx.net) +For information on usage and redistribution, and for a DISCLAIMER OF ALL +WARRANTIES, see the file, "license.txt," in this distribution. + +------------------------------------------------------------------------- + +This is an example for usage of flext +It's a simple interpolating delay with signal input with allows for glitchless change of delay times +Watch out for Doppler effects! + +*/ + +#include <flext.h> + +#if !defined(FLEXT_VERSION) || (FLEXT_VERSION < 400) +#error You need at least flext version 0.4.0 +#endif + +// template class for delay line +#include "delay.h" + + +class idelay: + public flext_dsp +{ + FLEXT_HEADER(idelay,flext_dsp) + +public: + idelay(F msec); + ~idelay(); + + DelayLine<S> *dline; + +protected: + virtual V m_signal(I n,S *const *in,S *const *out); +}; + +// make implementation of a tilde object with one float arg +FLEXT_NEW_DSP_1("idelay~",idelay,F) + + +idelay::idelay(F maxmsec) +{ + I nsamps = (I)ceil(maxmsec*Samplerate()*0.001f); + if (nsamps < 1) nsamps = 1; + dline = new DelayLine<F>(nsamps); + + AddInSignal(2); // audio in & delay signals + AddOutSignal(); // audio out + SetupInOut(); // set up inlets and outlets +} + +idelay::~idelay() +{ + if(dline) delete dline; +} + + +V idelay::m_signal(I n,S *const *in,S *const *out) +{ + const S *ins = in[0],*del = in[1]; + S *outs = out[0]; + F msr = Samplerate()*0.001f; + + while (n--) + { + dline->Put(*ins++); + *outs++ = dline->Get((*del++)*msr); + } +} + |