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Diffstat (limited to 'tab/tabread6c~.c')
| -rw-r--r-- | tab/tabread6c~.c | 192 |
1 files changed, 0 insertions, 192 deletions
diff --git a/tab/tabread6c~.c b/tab/tabread6c~.c deleted file mode 100644 index 45026cb..0000000 --- a/tab/tabread6c~.c +++ /dev/null @@ -1,192 +0,0 @@ -// tabread6c~ -// most of this code comes from pd. just the interpolation shematic is diferent. - - -/* -This software is copyrighted by Miller Puckette and others. The following -terms (the "Standard Improved BSD License") apply to all files associated with -the software unless explicitly disclaimed in individual files: - -Redistribution and use in source and binary forms, with or without -modification, are permitted provided that the following conditions are -met: - -1. Redistributions of source code must retain the above copyright - notice, this list of conditions and the following disclaimer. -2. Redistributions in binary form must reproduce the above - copyright notice, this list of conditions and the following - disclaimer in the documentation and/or other materials provided - with the distribution. -3. The name of the author may not be used to endorse or promote - products derived from this software without specific prior - written permission. - -THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY -EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, -THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A -PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR -BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, -EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED -TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, -DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND -ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT -LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING -IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF -THE POSSIBILITY OF SUCH DAMAGE. -*/ - -// Cyrille Henry 06 2008 - -#include "m_pd.h" - -/******************** tabread6c~ ***********************/ - -static t_class *tabread6c_tilde_class; - -typedef struct _tabread6c_tilde -{ - t_object x_obj; - int x_npoints; - t_word *x_vec; - t_symbol *x_arrayname; - t_float x_f; -} t_tabread6c_tilde; - -static void *tabread6c_tilde_new(t_symbol *s) -{ - t_tabread6c_tilde *x = (t_tabread6c_tilde *)pd_new(tabread6c_tilde_class); - x->x_arrayname = s; - x->x_vec = 0; - outlet_new(&x->x_obj, gensym("signal")); - x->x_f = 0; - return (x); -} - -static t_int *tabread6c_tilde_perform(t_int *w) -{ - t_tabread6c_tilde *x = (t_tabread6c_tilde *)(w[1]); - t_sample *in = (t_sample *)(w[2]); - t_sample *out = (t_sample *)(w[3]); - int n = (int)(w[4]); - int maxindex; - t_word *buf = x->x_vec, *wp; - int i; - double a0,a1,a2,a3,a4,a5; // CH - - maxindex = x->x_npoints - 3; - - if (!buf) goto zero; - -#if 0 /* test for spam -- I'm not ready to deal with this */ - for (i = 0, xmax = 0, xmin = maxindex, fp = in1; i < n; i++, fp++) - { - t_sample f = *in1; - if (f < xmin) xmin = f; - else if (f > xmax) xmax = f; - } - if (xmax < xmin + x->c_maxextent) xmax = xmin + x->c_maxextent; - for (i = 0, splitlo = xmin+ x->c_maxextent, splithi = xmax - x->c_maxextent, - fp = in1; i < n; i++, fp++) - { - t_sample f = *in1; - if (f > splitlo && f < splithi) goto zero; - } -#endif - - for (i = 0; i < n; i++) - { - t_sample findex = *in++; - int index = findex; - t_sample frac, a, b, c, d, e, f, cminusb; - static int count; - if (index < 1) - index = 1, frac = 0; - else if (index > maxindex) - index = maxindex, frac = 1; - else frac = findex - index; - wp = buf + index; - a = wp[-2].w_float; - b = wp[-1].w_float; - c = wp[0].w_float; - d = wp[1].w_float; - e = wp[2].w_float; - f = wp[3].w_float; -// CH - -/* a0 = c; - a1 = ( 1./12.)*a - ( 2./3. )*b + ( 2./3. )*d - ( 1./12.)*e; - a2 = (-1./24.)*a + ( 2./3. )*b - ( 5./4. )*c + ( 2./3. )*d - ( 1./24.)*e; - a3 = (-3./8. )*a + (13./8. )*b - (35./12.)*c + (11./4. )*d - (11./8. )*e + ( 7./24.)*f; - a4 = (13./24.)*a - ( 8./3. )*b + (21./4. )*c - (31./6. )*d + (61./24.)*e - ( 1./2. )*f; - a5 = (-5./24.)*a + (25./24.)*b - (25./12.)*c + (25./12.)*d - (25./24.)*e + ( 5./24.)*f; - - *out++ = ((((a5 * frac + a4 ) * frac + a3) * frac + a2) * frac + a1) * frac + a0; -*/ -// same but optimized : - - t_sample a3plusa4plusa5 = 0.25f*c+0.125f*e-(1./3.)*d-(1./24.)*a; - t_sample fminusa = f-a; - t_sample eminusb = e-b; - t_sample dminusc = d-c; - - a5 = (5./24.)*((fminusa-5.f*eminusb+10.f*dminusc)); - a4 = (8./3.)*eminusb-0.5f*fminusa-5.5f*dminusc-a3plusa4plusa5; - a3 = a3plusa4plusa5-a4-a5; - a2 = (2./3.)*(d+b)-(1./24.)*(a+e)-1.25f*c; - a1 = (2./3.)*(d-b)+(1./12.)*(a-e); - a0 = c; - - *out++ = ((((a5 * frac + a4 ) * frac + a3) * frac + a2) * frac + a1) -* frac + a0; - - } - return (w+5); - zero: - while (n--) *out++ = 0; - - return (w+5); -} - -void tabread6c_tilde_set(t_tabread6c_tilde *x, t_symbol *s) -{ - t_garray *a; - - x->x_arrayname = s; - if (!(a = (t_garray *)pd_findbyclass(x->x_arrayname, garray_class))) - { - if (*s->s_name) - pd_error(x, "tabread6c~: %s: no such array", x->x_arrayname->s_name); - x->x_vec = 0; - } - else if (!garray_getfloatwords(a, &x->x_npoints, &x->x_vec)) - { - pd_error(x, "%s: bad template for tabread6c~", x->x_arrayname->s_name); - x->x_vec = 0; - } - else garray_usedindsp(a); -} - -static void tabread6c_tilde_dsp(t_tabread6c_tilde *x, t_signal **sp) -{ - tabread6c_tilde_set(x, x->x_arrayname); - - dsp_add(tabread6c_tilde_perform, 4, x, - sp[0]->s_vec, sp[1]->s_vec, sp[0]->s_n); - -} - -static void tabread6c_tilde_free(t_tabread6c_tilde *x) -{ -} - -void tabread6c_tilde_setup(void) -{ - tabread6c_tilde_class = class_new(gensym("tabread6c~"), - (t_newmethod)tabread6c_tilde_new, (t_method)tabread6c_tilde_free, - sizeof(t_tabread6c_tilde), 0, A_DEFSYM, 0); - CLASS_MAINSIGNALIN(tabread6c_tilde_class, t_tabread6c_tilde, x_f); - class_addmethod(tabread6c_tilde_class, (t_method)tabread6c_tilde_dsp, - gensym("dsp"), 0); - class_addmethod(tabread6c_tilde_class, (t_method)tabread6c_tilde_set, - gensym("set"), A_SYMBOL, 0); -} |