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* Pure Data Packet - Utility toolkit objects.
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* Copyright (c) by Tom Schouten <pdp@zzz.kotnet.org>
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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/* This file contains some small utility pd objects that make working with
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pdp objects a lot easier. Mainly as glue to be used in the abstractions
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/* this object does an add, scale, clip operation */
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t_class *pdp_ut_addscaleclip_class;
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typedef struct pdp_ut_addscaleclip_struct
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} t_pdp_ut_addscaleclip;
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static void pdp_ut_addscaleclip_float(t_pdp_ut_addscaleclip *x, t_floatarg f)
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f = (f < x->x_min) ? x->x_min : f;
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f = (f > x->x_max) ? x->x_max : f;
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outlet_float(x->x_outlet0, f);
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static void pdp_ut_addscaleclip_free(t_pdp_ut_addscaleclip *x){}
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void *pdp_ut_addscaleclip_new(t_floatarg offset, t_floatarg scale, t_floatarg min, t_floatarg max)
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t_pdp_ut_addscaleclip *x = (t_pdp_ut_addscaleclip *)pd_new(pdp_ut_addscaleclip_class);
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x->x_outlet0 = outlet_new(&x->x_obj, &s_float);
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void pdp_ut_addscaleclip_setup(void)
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pdp_ut_addscaleclip_class = class_new(gensym("pdp_ut_addscaleclip"), (t_newmethod)pdp_ut_addscaleclip_new,
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(t_method)pdp_ut_addscaleclip_free, sizeof(t_pdp_ut_addscaleclip), 0,
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A_FLOAT, A_FLOAT, A_FLOAT, A_FLOAT, A_NULL);
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class_addfloat(pdp_ut_addscaleclip_class, pdp_ut_addscaleclip_float);
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/* pdp_ut_logmap does a logarithmic parameter mapping [0->1] x -> min(max/min)^x max an add, scale, clip operation */
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/* pdp_ut_logmap_comp does x -> min(max/min)^(1-x) */
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/* pdp_ut_linmap dos x -> min + (max - min * x */
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t_class *pdp_ut_linmap_class;
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t_class *pdp_ut_logmap_class;
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t_class *pdp_ut_logmap_comp_class;
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typedef struct pdp_ut_map_struct
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static void pdp_ut_logmap_float(t_pdp_ut_map *x, t_floatarg f)
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f = (f < 0.0f) ? 0.0f : f;
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f = (f > 1.0f) ? 1.0f : f;
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f = x->x_min * pow((x->x_max / x->x_min), f);
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outlet_float(x->x_outlet0, f);
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static void pdp_ut_linmap_float(t_pdp_ut_map *x, t_floatarg f)
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f = (f < 0.0f) ? 0.0f : f;
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f = (f > 1.0f) ? 1.0f : f;
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f = x->x_min + ((x->x_max - x->x_min) * f);
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outlet_float(x->x_outlet0, f);
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static void pdp_ut_logmap_comp_float(t_pdp_ut_map *x, t_floatarg f)
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f = (f < 0.0f) ? 0.0f : f;
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f = (f > 1.0f) ? 1.0f : f;
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f = x->x_min * pow((x->x_max / x->x_min), (1.0f - f));
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outlet_float(x->x_outlet0, f);
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static void pdp_ut_map_free(t_pdp_ut_map *x){}
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void pdp_ut_map_init(t_pdp_ut_map *x, t_floatarg min, t_floatarg max)
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x->x_outlet0 = outlet_new(&x->x_obj, &s_float);
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void *pdp_ut_logmap_new(t_floatarg min, t_floatarg max)
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t_pdp_ut_map *x = (t_pdp_ut_map *)pd_new(pdp_ut_logmap_class);
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pdp_ut_map_init(x, min, max);
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void *pdp_ut_linmap_new(t_floatarg min, t_floatarg max)
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t_pdp_ut_map *x = (t_pdp_ut_map *)pd_new(pdp_ut_linmap_class);
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pdp_ut_map_init(x, min, max);
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void *pdp_ut_logmap_comp_new(t_floatarg min, t_floatarg max)
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t_pdp_ut_map *x = (t_pdp_ut_map *)pd_new(pdp_ut_logmap_comp_class);
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pdp_ut_map_init(x, min, max);
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void pdp_ut_logmap_setup(void)
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pdp_ut_logmap_class = class_new(gensym("pdp_ut_logmap"), (t_newmethod)pdp_ut_logmap_new,
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(t_method)pdp_ut_map_free, sizeof(t_pdp_ut_map), 0,
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A_FLOAT, A_FLOAT, A_NULL);
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class_addfloat(pdp_ut_logmap_class, pdp_ut_logmap_float);
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void pdp_ut_logmap_comp_setup(void)
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pdp_ut_logmap_comp_class = class_new(gensym("pdp_ut_logmap_comp"), (t_newmethod)pdp_ut_logmap_comp_new,
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(t_method)pdp_ut_map_free, sizeof(t_pdp_ut_map), 0,
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A_FLOAT, A_FLOAT, A_NULL);
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class_addfloat(pdp_ut_logmap_comp_class, pdp_ut_logmap_comp_float);
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void pdp_ut_linmap_setup(void)
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pdp_ut_linmap_class = class_new(gensym("pdp_ut_linmap"), (t_newmethod)pdp_ut_linmap_new,
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(t_method)pdp_ut_map_free, sizeof(t_pdp_ut_map), 0,
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A_FLOAT, A_FLOAT, A_NULL);
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class_addfloat(pdp_ut_linmap_class, pdp_ut_linmap_float);
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t_class *pdp_ut_rgb2ycrcb_class;
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typedef struct pdp_ut_rgb2ycrcb
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t_outlet *x_outlet_luma;
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t_outlet *x_outlet_chroma_red;
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t_outlet *x_outlet_chroma_blue;
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t_float x_red, x_green, x_blue;
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} t_pdp_ut_rgb2ycrcb;
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static void pdp_ut_rgb2ycrcb_bang (t_pdp_ut_rgb2ycrcb* x)
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float luma = 0.299f * x->x_red + 0.587f * x->x_green + 0.114f * x->x_blue;
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float chroma_red = (x->x_red - luma) * 0.713f;
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float chroma_blue = (x->x_blue - luma) * 0.565f;
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outlet_float(x->x_outlet_chroma_blue, chroma_blue);
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outlet_float(x->x_outlet_chroma_red, chroma_red);
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outlet_float(x->x_outlet_luma, luma);
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static void pdp_ut_rgb2ycrcb_red (t_pdp_ut_rgb2ycrcb* x, t_floatarg f) {x->x_red = f; pdp_ut_rgb2ycrcb_bang(x);}
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static void pdp_ut_rgb2ycrcb_green (t_pdp_ut_rgb2ycrcb* x, t_floatarg f) {x->x_green = f; pdp_ut_rgb2ycrcb_bang(x);}
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static void pdp_ut_rgb2ycrcb_blue (t_pdp_ut_rgb2ycrcb* x, t_floatarg f) {x->x_blue = f; pdp_ut_rgb2ycrcb_bang(x);}
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static void pdp_ut_rgb2ycrcb_free (t_pdp_ut_rgb2ycrcb* x) {}
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static void* pdp_ut_rgb2ycrcb_new(void)
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t_pdp_ut_rgb2ycrcb *x = (t_pdp_ut_rgb2ycrcb *)pd_new(pdp_ut_rgb2ycrcb_class);
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inlet_new(&x->x_obj, &x->x_obj.ob_pd, gensym("float"), gensym("green"));
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inlet_new(&x->x_obj, &x->x_obj.ob_pd, gensym("float"), gensym("blue"));
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x->x_outlet_luma = outlet_new(&x->x_obj, &s_float);
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x->x_outlet_chroma_red = outlet_new(&x->x_obj, &s_float);
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x->x_outlet_chroma_blue = outlet_new(&x->x_obj, &s_float);
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void pdp_ut_rgb2ycrcb_setup(void)
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pdp_ut_rgb2ycrcb_class = class_new(gensym("pdp_ut_rgb2ycrcb"), (t_newmethod)pdp_ut_rgb2ycrcb_new,
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(t_method)pdp_ut_rgb2ycrcb_free, sizeof(t_pdp_ut_rgb2ycrcb), 0, A_NULL);
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class_addfloat(pdp_ut_rgb2ycrcb_class, pdp_ut_rgb2ycrcb_red);
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class_addmethod(pdp_ut_rgb2ycrcb_class, (t_method)pdp_ut_rgb2ycrcb_green, gensym("green"), A_FLOAT, A_NULL);
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class_addmethod(pdp_ut_rgb2ycrcb_class, (t_method)pdp_ut_rgb2ycrcb_blue, gensym("blue"), A_FLOAT, A_NULL);
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void pdp_ut_setup(void)
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pdp_ut_addscaleclip_setup();
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pdp_ut_logmap_setup();
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pdp_ut_logmap_comp_setup();
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pdp_ut_linmap_setup();
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pdp_ut_rgb2ycrcb_setup();
added
removed
puredata/pdp_ut.c
