526b5580da
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@21070 a1c6a512-1295-4272-9138-f99709370657
53 lines
1.2 KiB
C
53 lines
1.2 KiB
C
#include <m_pd.h>
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#include <m_fixed.h>
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#define LOGTEN 2.302585092994
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typedef struct rmstodb_tilde
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{
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t_object x_obj;
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float x_f;
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} t_rmstodb_tilde;
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t_class *rmstodb_tilde_class;
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static void *rmstodb_tilde_new(void)
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{
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t_rmstodb_tilde *x = (t_rmstodb_tilde *)pd_new(rmstodb_tilde_class);
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outlet_new(&x->x_obj, gensym("signal"));
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x->x_f = 0;
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return (x);
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}
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static t_int *rmstodb_tilde_perform(t_int *w)
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{
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float *in = *(t_float **)(w+1), *out = *(t_float **)(w+2);
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t_int n = *(t_int *)(w+3);
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for (; n--; in++, out++)
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{
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float f = *in;
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if (f <= 0) *out = 0;
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else
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{
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float g = 100 + 20./LOGTEN * log(f);
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*out = (g < 0 ? 0 : g);
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}
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}
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return (w + 4);
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}
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static void rmstodb_tilde_dsp(t_rmstodb_tilde *x, t_signal **sp)
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{
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post("warning: %s not usable yet",__FUNCTION__);
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dsp_add(rmstodb_tilde_perform, 3, sp[0]->s_vec, sp[1]->s_vec, sp[0]->s_n);
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}
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void rmstodb_tilde_setup(void)
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{
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rmstodb_tilde_class = class_new(gensym("rmstodb~"), (t_newmethod)rmstodb_tilde_new, 0,
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sizeof(t_rmstodb_tilde), 0, 0);
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CLASS_MAINSIGNALIN(rmstodb_tilde_class, t_rmstodb_tilde, x_f);
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class_addmethod(rmstodb_tilde_class, (t_method)rmstodb_tilde_dsp, gensym("dsp"), 0);
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}
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