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Diffstat (limited to 'apps/plugins/lua/SOURCES')

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/* Copyright (c) 1997-2001 Miller Puckette and others. * For information on usage and redistribution, and for a DISCLAIMER OF ALL * WARRANTIES, see the file, "LICENSE.txt," in this distribution. */ /* mathematical functions and other transfer functions, including tilde versions of stuff from x_acoustics.c. */ #include "m_pd.h" #include <math.h> #define LOGTEN 2.302585092994 /* ------------------------- clip~ -------------------------- */ static t_class *clip_class; typedef struct _clip { t_object x_obj; float x_f; t_sample x_lo; t_sample x_hi; } t_clip; static void *clip_new(t_floatarg lo, t_floatarg hi) { t_clip *x = (t_clip *)pd_new(clip_class); x->x_lo = lo; x->x_hi = hi; outlet_new(&x->x_obj, gensym("signal")); floatinlet_new(&x->x_obj, &x->x_lo); floatinlet_new(&x->x_obj, &x->x_hi); x->x_f = 0; return (x); } static t_int *clip_perform(t_int *w) { t_clip *x = (t_clip *)(w[1]); t_float *in = (t_float *)(w[2]); t_float *out = (t_float *)(w[3]); int n = (int)(w[4]); while (n--) { float f = *in++; if (f < x->x_lo) f = x->x_lo; if (f > x->x_hi) f = x->x_hi; *out++ = f; } return (w+5); } static void clip_dsp(t_clip *x, t_signal **sp) { dsp_add(clip_perform, 4, x, sp[0]->s_vec, sp[1]->s_vec, sp[0]->s_n); } static void clip_setup(void) { clip_class = class_new(gensym("clip~"), (t_newmethod)clip_new, 0, sizeof(t_clip), 0, A_DEFFLOAT, A_DEFFLOAT, 0); CLASS_MAINSIGNALIN(clip_class, t_clip, x_f); class_addmethod(clip_class, (t_method)clip_dsp, gensym("dsp"), 0); } /* sigrsqrt - reciprocal square root good to 8 mantissa bits */ #define DUMTAB1SIZE 256 #define DUMTAB2SIZE 1024 static float rsqrt_exptab[DUMTAB1SIZE], rsqrt_mantissatab[DUMTAB2SIZE]; static void init_rsqrt(void) { int i; for (i = 0; i < DUMTAB1SIZE; i++) { float f; long l = (i ? (i == DUMTAB1SIZE-1 ? DUMTAB1SIZE-2 : i) : 1)<< 23; *(long *)(&f) = l; rsqrt_exptab[i] = 1./sqrt(f); } for (i = 0; i < DUMTAB2SIZE; i++) { float f = 1 + (1./DUMTAB2SIZE) * i; rsqrt_mantissatab[i] = 1./sqrt(f); } } /* these are used in externs like "bonk" */ float q8_rsqrt(float f) { long l = *(long *)(&f); if (f < 0) return (0); else return (rsqrt_exptab[(l >> 23) & 0xff] * rsqrt_mantissatab[(l >> 13) & 0x3ff]); } float q8_sqrt(float f) { long l = *(long *)(&f); if (f < 0) return (0); else return (f * rsqrt_exptab[(l >> 23) & 0xff] * rsqrt_mantissatab[(l >> 13) & 0x3ff]); } /* the old names are OK unless we're in IRIX N32 */ #ifndef N32 float qsqrt(float f) {return (q8_sqrt(f)); } float qrsqrt(float f) {return (q8_rsqrt(f)); } #endif typedef struct sigrsqrt { t_object x_obj; float x_f; } t_sigrsqrt; static t_class *sigrsqrt_class; static void *sigrsqrt_new(void) { t_sigrsqrt *x = (t_sigrsqrt *)pd_new(sigrsqrt_class); outlet_new(&x->x_obj, gensym("signal")); x->x_f = 0; return (x); } static t_int *sigrsqrt_perform(t_int *w) { float *in = *(t_float **)(w+1), *out = *(t_float **)(w+2); t_int n = *(t_int *)(w+3); while (n--) { float f = *in; long l = *(long *)(in++); if (f < 0) *out++ = 0; else { float g = rsqrt_exptab[(l >> 23) & 0xff] * rsqrt_mantissatab[(l >> 13) & 0x3ff]; *out++ = 1.5 * g - 0.5 * g * g * g * f; } } return (w + 4); } static void sigrsqrt_dsp(t_sigrsqrt *x, t_signal **sp) { dsp_add(sigrsqrt_perform, 3, sp[0]->s_vec, sp[1]->s_vec, sp[0]->s_n); } void sigrsqrt_setup(void) { init_rsqrt(); sigrsqrt_class = class_new(gensym("rsqrt~"), (t_newmethod)sigrsqrt_new, 0, sizeof(t_sigrsqrt), 0, 0); /* an old name for it: */ class_addcreator(sigrsqrt_new, gensym("q8_rsqrt~"), 0); CLASS_MAINSIGNALIN(sigrsqrt_class, t_sigrsqrt, x_f); class_addmethod(sigrsqrt_class, (t_method)sigrsqrt_dsp, gensym("dsp"), 0); } /* sigsqrt - square root good to 8 mantissa bits */ typedef struct sigsqrt { t_object x_obj; float x_f; } t_sigsqrt; static t_class *sigsqrt_class; static void *sigsqrt_new(void) { t_sigsqrt *x = (t_sigsqrt *)pd_new(sigsqrt_class); outlet_new(&x->x_obj, gensym("signal")); x->x_f = 0; return (x); } t_int *sigsqrt_perform(t_int *w) /* not static; also used in d_fft.c */ { float *in = *(t_float **)(w+1), *out = *(t_float **)(w+2); t_int n = *(t_int *)(w+3); while (n--) { float f = *in; long l = *(long *)(in++); if (f < 0) *out++ = 0; else { float g = rsqrt_exptab[(l >> 23) & 0xff] * rsqrt_mantissatab[(l >> 13) & 0x3ff]; *out++ = f * (1.5 * g - 0.5 * g * g * g * f); } } return (w + 4); } static void sigsqrt_dsp(t_sigsqrt *x, t_signal **sp) { dsp_add(sigsqrt_perform, 3, sp[0]->s_vec, sp[1]->s_vec, sp[0]->s_n); } void sigsqrt_setup(void) { sigsqrt_class = class_new(gensym("sqrt~"), (t_newmethod)sigsqrt_new, 0, sizeof(t_sigsqrt), 0, 0); class_addcreator(sigsqrt_new, gensym("q8_sqrt~"), 0); /* old name */ CLASS_MAINSIGNALIN(sigsqrt_class, t_sigsqrt, x_f); class_addmethod(sigsqrt_class, (t_method)sigsqrt_dsp, gensym("dsp"), 0); } /* ------------------------------ wrap~ -------------------------- */ typedef struct wrap { t_object x_obj; float x_f; } t_sigwrap; t_class *sigwrap_class; static void *sigwrap_new(void) { t_sigwrap *x = (t_sigwrap *)pd_new(sigwrap_class); outlet_new(&x->x_obj, gensym("signal")); x->x_f = 0; return (x); } static t_int *sigwrap_perform(t_int *w) { float *in = *(t_float **)(w+1), *out = *(t_float **)(w+2); t_int n = *(t_int *)(w+3); while (n--) { float f = *in++; int k = f; if (f > 0) *out++ = f-k; else *out++ = f - (k-1); } return (w + 4); } static void sigwrap_dsp(t_sigwrap *x, t_signal **sp) { dsp_add(sigwrap_perform, 3, sp[0]->s_vec, sp[1]->s_vec, sp[0]->s_n); } void sigwrap_setup(void) { sigwrap_class = class_new(gensym("wrap~"), (t_newmethod)sigwrap_new, 0, sizeof(t_sigwrap), 0, 0); CLASS_MAINSIGNALIN(sigwrap_class, t_sigwrap, x_f); class_addmethod(sigwrap_class, (t_method)sigwrap_dsp, gensym("dsp"), 0); } /* ------------------------------ mtof_tilde~ -------------------------- */ typedef struct mtof_tilde { t_object x_obj; float x_f; } t_mtof_tilde; t_class *mtof_tilde_class; static void *mtof_tilde_new(void) { t_mtof_tilde *x = (t_mtof_tilde *)pd_new(mtof_tilde_class); outlet_new(&x->x_obj, gensym("signal")); x->x_f = 0; return (x); } static t_int *mtof_tilde_perform(t_int *w) { float *in = *(t_float **)(w+1), *out = *(t_float **)(w+2); t_int n = *(t_int *)(w+3); for (; n--; in++, out++) { float f = *in; if (f <= -1500) *out = 0; else { if (f > 1499) f = 1499; *out = 8.17579891564 * exp(.0577622650 * f); } } return (w + 4); } static void mtof_tilde_dsp(t_mtof_tilde *x, t_signal **sp) { dsp_add(mtof_tilde_perform, 3, sp[0]->s_vec, sp[1]->s_vec, sp[0]->s_n); } void mtof_tilde_setup(void) { mtof_tilde_class = class_new(gensym("mtof~"), (t_newmethod)mtof_tilde_new, 0, sizeof(t_mtof_tilde), 0, 0); CLASS_MAINSIGNALIN(mtof_tilde_class, t_mtof_tilde, x_f); class_addmethod(mtof_tilde_class, (t_method)mtof_tilde_dsp, gensym("dsp"), 0); } /* ------------------------------ ftom_tilde~ -------------------------- */ typedef struct ftom_tilde { t_object x_obj; float x_f; } t_ftom_tilde; t_class *ftom_tilde_class; static void *ftom_tilde_new(void) { t_ftom_tilde *x = (t_ftom_tilde *)pd_new(ftom_tilde_class); outlet_new(&x->x_obj, gensym("signal")); x->x_f = 0; return (x); } static t_int *ftom_tilde_perform(t_int *w) { float *in = *(t_float **)(w+1), *out = *(t_float **)(w+2); t_int n = *(t_int *)(w+3); for (; n--; *in++, out++) { float f = *in; *out = (f > 0 ? 17.3123405046 * log(.12231220585 * f) : -1500); } return (w + 4); } static void ftom_tilde_dsp(t_ftom_tilde *x, t_signal **sp) { dsp_add(ftom_tilde_perform, 3, sp[0]->s_vec, sp[1]->s_vec, sp[0]->s_n); } void ftom_tilde_setup(void) { ftom_tilde_class = class_new(gensym("ftom~"), (t_newmethod)ftom_tilde_new, 0, sizeof(t_ftom_tilde), 0, 0); CLASS_MAINSIGNALIN(ftom_tilde_class, t_ftom_tilde, x_f); class_addmethod(ftom_tilde_class, (t_method)ftom_tilde_dsp, gensym("dsp"), 0); } /* ------------------------------ dbtorms~ -------------------------- */ typedef struct dbtorms_tilde { t_object x_obj; float x_f; } t_dbtorms_tilde; t_class *dbtorms_tilde_class; static void *dbtorms_tilde_new(void) { t_dbtorms_tilde *x = (t_dbtorms_tilde *)pd_new(dbtorms_tilde_class); outlet_new(&x->x_obj, gensym("signal")); x->x_f = 0; return (x); } static t_int *dbtorms_tilde_perform(t_int *w) { float *in = *(t_float **)(w+1), *out = *(t_float **)(w+2); t_int n = *(t_int *)(w+3); for (; n--; in++, out++) { float f = *in; if (f <= 0) *out = 0; else { if (f > 485) f = 485; *out = exp((LOGTEN * 0.05) * (f-100.)); } } return (w + 4); } static void dbtorms_tilde_dsp(t_dbtorms_tilde *x, t_signal **sp) { dsp_add(dbtorms_tilde_perform, 3, sp[0]->s_vec, sp[1]->s_vec, sp[0]->s_n); } void dbtorms_tilde_setup(void) { dbtorms_tilde_class = class_new(gensym("dbtorms~"), (t_newmethod)dbtorms_tilde_new, 0, sizeof(t_dbtorms_tilde), 0, 0); CLASS_MAINSIGNALIN(dbtorms_tilde_class, t_dbtorms_tilde, x_f); class_addmethod(dbtorms_tilde_class, (t_method)dbtorms_tilde_dsp, gensym("dsp"), 0); } /* ------------------------------ rmstodb~ -------------------------- */ typedef struct rmstodb_tilde { t_object x_obj; float x_f; } t_rmstodb_tilde; t_class *rmstodb_tilde_class; static void *rmstodb_tilde_new(void) { t_rmstodb_tilde *x = (t_rmstodb_tilde *)pd_new(rmstodb_tilde_class); outlet_new(&x->x_obj, gensym("signal")); x->x_f = 0; return (x); } static t_int *rmstodb_tilde_perform(t_int *w) { float *in = *(t_float **)(w+1), *out = *(t_float **)(w+2); t_int n = *(t_int *)(w+3); for (; n--; in++, out++) { float f = *in; if (f <= 0) *out = 0; else { float g = 100 + 20./LOGTEN * log(f); *out = (g < 0 ? 0 : g); } } return (w + 4); } static void rmstodb_tilde_dsp(t_rmstodb_tilde *x, t_signal **sp) { dsp_add(rmstodb_tilde_perform, 3, sp[0]->s_vec, sp[1]->s_vec, sp[0]->s_n); } void rmstodb_tilde_setup(void) { rmstodb_tilde_class = class_new(gensym("rmstodb~"), (t_newmethod)rmstodb_tilde_new, 0, sizeof(t_rmstodb_tilde), 0, 0); CLASS_MAINSIGNALIN(rmstodb_tilde_class, t_rmstodb_tilde, x_f); class_addmethod(rmstodb_tilde_class, (t_method)rmstodb_tilde_dsp, gensym("dsp"), 0); } /* ------------------------------ dbtopow~ -------------------------- */ typedef struct dbtopow_tilde { t_object x_obj; float x_f; } t_dbtopow_tilde; t_class *dbtopow_tilde_class; static void *dbtopow_tilde_new(void) { t_dbtopow_tilde *x = (t_dbtopow_tilde *)pd_new(dbtopow_tilde_class); outlet_new(&x->x_obj, gensym("signal")); x->x_f = 0; return (x); } static t_int *dbtopow_tilde_perform(t_int *w) { float *in = *(t_float **)(w+1), *out = *(t_float **)(w+2); t_int n = *(t_int *)(w+3); for (; n--; in++, out++) { float f = *in; if (f <= 0) *out = 0; else { if (f > 870) f = 870; *out = exp((LOGTEN * 0.1) * (f-100.)); } } return (w + 4); } static void dbtopow_tilde_dsp(t_dbtopow_tilde *x, t_signal **sp) { dsp_add(dbtopow_tilde_perform, 3, sp[0]->s_vec, sp[1]->s_vec, sp[0]->s_n); } void dbtopow_tilde_setup(void) { dbtopow_tilde_class = class_new(gensym("dbtopow~"), (t_newmethod)dbtopow_tilde_new, 0, sizeof(t_dbtopow_tilde), 0, 0); CLASS_MAINSIGNALIN(dbtopow_tilde_class, t_dbtopow_tilde, x_f); class_addmethod(dbtopow_tilde_class, (t_method)dbtopow_tilde_dsp, gensym("dsp"), 0); } /* ------------------------------ powtodb~ -------------------------- */ typedef struct powtodb_tilde { t_object x_obj; float x_f; } t_powtodb_tilde; t_class *powtodb_tilde_class; static void *powtodb_tilde_new(void) { t_powtodb_tilde *x = (t_powtodb_tilde *)pd_new(powtodb_tilde_class); outlet_new(&x->x_obj, gensym("signal")); x->x_f = 0; return (x); } static t_int *powtodb_tilde_perform(t_int *w) { float *in = *(t_float **)(w+1), *out = *(t_float **)(w+2); t_int n = *(t_int *)(w+3); for (; n--; in++, out++) { float f = *in; if (f <= 0) *out = 0; else { float g = 100 + 10./LOGTEN * log(f); *out = (g < 0 ? 0 : g); } } return (w + 4); } static void powtodb_tilde_dsp(t_powtodb_tilde *x, t_signal **sp) { dsp_add(powtodb_tilde_perform, 3, sp[0]->s_vec, sp[1]->s_vec, sp[0]->s_n); } void powtodb_tilde_setup(void) { powtodb_tilde_class = class_new(gensym("powtodb~"), (t_newmethod)powtodb_tilde_new, 0, sizeof(t_powtodb_tilde), 0, 0); CLASS_MAINSIGNALIN(powtodb_tilde_class, t_powtodb_tilde, x_f); class_addmethod(powtodb_tilde_class, (t_method)powtodb_tilde_dsp, gensym("dsp"), 0); } /* ------------------------ global setup routine ------------------------- */ void d_math_setup(void) { t_symbol *s = gensym("acoustics~.pd"); clip_setup(); sigrsqrt_setup(); sigsqrt_setup(); sigwrap_setup(); mtof_tilde_setup(); ftom_tilde_setup(); dbtorms_tilde_setup(); rmstodb_tilde_setup(); dbtopow_tilde_setup(); powtodb_tilde_setup(); class_sethelpsymbol(mtof_tilde_class, s); class_sethelpsymbol(ftom_tilde_class, s); class_sethelpsymbol(dbtorms_tilde_class, s); class_sethelpsymbol(rmstodb_tilde_class, s); class_sethelpsymbol(dbtopow_tilde_class, s); class_sethelpsymbol(powtodb_tilde_class, s); }


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