From da1f0065d07250b86b9a761b012987e4825f491f Mon Sep 17 00:00:00 2001 From: Hans-Christoph Steiner Date: Mon, 28 Nov 2005 16:53:25 +0000 Subject: This commit was generated by cvs2svn to compensate for changes in r4068, which included commits to RCS files with non-trunk default branches. svn path=/trunk/externals/smlib/; revision=4069 --- source/vdelta.c | 75 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 75 insertions(+) create mode 100644 source/vdelta.c (limited to 'source/vdelta.c') diff --git a/source/vdelta.c b/source/vdelta.c new file mode 100644 index 0000000..cc809db --- /dev/null +++ b/source/vdelta.c @@ -0,0 +1,75 @@ +#include "defines.h" + +/*--------------- vdelta ----------------------------*/ +/* differences between element in succesive vectors */ + +static t_class *vdelta_class; + +typedef struct _vdelta +{ + t_object x_obj; + float m_c_leak; + float m_leak; + float *m_prev; + int m_n; +} t_vdelta; + + +static void vdelta_perform(t_vdelta *x, t_symbol *s, int argc, t_atom *argv) +{ + int i; + t_atom *ap,*app; + float *fp; + float m_leak; + float m_c_leak; + m_leak=x->m_leak; + m_c_leak=x->m_c_leak; + + if (argc!=x->m_n) + { + int i; + if (x->m_prev) + freebytes(x->m_prev,x->m_n); + x->m_prev=(float*)getbytes(argc*sizeof(float)); + for(i=0;im_prev[i]=0.0f; + x->m_n=argc; + } + + fp=x->m_prev; + ap = (t_atom *)getbytes(sizeof(t_atom)*argc); + app=ap; + for (i = 0; i < argc; i++) + { + float f=atom_getfloat(argv++); + SETFLOAT(app, f-*fp); + app++; + *fp++=f; + } + outlet_list(x->x_obj.ob_outlet,gensym("list"),argc,ap); + freebytes(ap,argc); +} + +static void *vdelta_new() +{ + t_vdelta *x=(t_vdelta *)pd_new(vdelta_class); + outlet_new(&x->x_obj, gensym("list")); + x->m_n=0; + x->m_prev=0; + return (void *)x; +} + +static void vdelta_free(t_vdelta *x) +{ + freebytes(x->m_prev,x->m_n); +} + +void vdelta_setup(void) +{ + vdelta_class = class_new(gensym("vdelta"), + (t_newmethod)vdelta_new, (t_method)vdelta_free, + sizeof(t_vdelta), + CLASS_DEFAULT, + 0); + class_addlist(vdelta_class, (t_method)vdelta_perform); +} -- cgit v1.2.1