fb0f61c0b0
* refactor copying and freeing of node->storage by handlerizing them. - freestoragefunc - copystoragefunc - node_util.c/h have generic handlers for these.
218 lines
6.3 KiB
C
218 lines
6.3 KiB
C
/**
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* $Id$
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*
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* ***** BEGIN GPL LICENSE BLOCK *****
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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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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*
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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 Foundation,
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* Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*
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* The Original Code is Copyright (C) 2006 Blender Foundation.
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* All rights reserved.
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*
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* The Original Code is: all of this file.
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*
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* Contributor(s): none yet.
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*
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* ***** END GPL LICENSE BLOCK *****
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*/
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#include "../CMP_util.h"
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/* ******************* channel Difference Matte ********************************* */
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static bNodeSocketType cmp_node_diff_matte_in[]={
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{SOCK_RGBA,1,"Image", 0.8f, 0.8f, 0.8f, 1.0f, 0.0f, 1.0f},
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{SOCK_RGBA,1,"Key Color", 0.8f, 0.8f, 0.8f, 1.0f, 0.0f, 1.0f},
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{-1,0,""}
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};
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static bNodeSocketType cmp_node_diff_matte_out[]={
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{SOCK_RGBA,0,"Image", 0.8f, 0.8f, 0.8f, 1.0f, 0.0f, 1.0f},
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{SOCK_VALUE,0,"Matte",0.0f, 0.0f, 0.0f, 1.0f, 0.0f, 1.0f},
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{-1,0,""}
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};
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/* note, keyvals is passed on from caller as stack array */
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/* might have been nicer as temp struct though... */
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static void do_diff_matte(bNode *node, float *colorbuf, float *inbuf, float *keyvals)
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{
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NodeChroma *c= (NodeChroma *)node->storage;
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float *keymin= keyvals;
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float *keymax= keyvals+3;
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float *key= keyvals+6;
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float tolerance= keyvals[9];
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float distance, alpha;
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/*process the pixel if it is close to the key or already transparent*/
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if(((colorbuf[0]>keymin[0] && colorbuf[0]<keymax[0]) &&
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(colorbuf[1]>keymin[1] && colorbuf[1]<keymax[1]) &&
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(colorbuf[2]>keymin[2] && colorbuf[2]<keymax[2])) || inbuf[3]<1.0f) {
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/*true distance from key*/
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distance= sqrt((colorbuf[0]-key[0])*(colorbuf[0]-key[0])+
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(colorbuf[1]-key[1])*(colorbuf[1]-key[1])+
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(colorbuf[2]-key[2])*(colorbuf[2]-key[2]));
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/*is it less transparent than the prevous pixel*/
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alpha= distance/tolerance;
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if(alpha > inbuf[3]) alpha= inbuf[3];
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if(alpha > c->fstrength) alpha= 0.0f;
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/*clamp*/
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if (alpha>1.0f) alpha=1.0f;
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if (alpha<0.0f) alpha=0.0f;
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/*premultiplied picture*/
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colorbuf[3]= alpha;
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}
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else {
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/*foreground object*/
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colorbuf[3]= inbuf[3];
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}
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}
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static void node_composit_exec_diff_matte(void *data, bNode *node, bNodeStack **in, bNodeStack **out)
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{
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/*
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Losely based on the Sequencer chroma key plug-in, but enhanced to work in other color spaces and
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uses a differnt difference function (suggested in forums of vfxtalk.com).
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*/
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CompBuf *workbuf;
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CompBuf *inbuf;
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NodeChroma *c;
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float keyvals[10];
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float *keymin= keyvals;
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float *keymax= keyvals+3;
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float *key= keyvals+6;
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float *tolerance= keyvals+9;
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float t[3];
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/*is anything connected?*/
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if(out[0]->hasoutput==0 && out[1]->hasoutput==0) return;
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/*must have an image imput*/
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if(in[0]->data==NULL) return;
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inbuf=typecheck_compbuf(in[0]->data, CB_RGBA);
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c=node->storage;
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workbuf=dupalloc_compbuf(inbuf);
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/*use the input color*/
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key[0]= in[1]->vec[0];
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key[1]= in[1]->vec[1];
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key[2]= in[1]->vec[2];
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/*get the tolerances from the UI*/
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t[0]=c->t1;
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t[1]=c->t2;
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t[2]=c->t3;
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/*convert to colorspace*/
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switch(node->custom1) {
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case 1: /*RGB*/
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break;
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case 2: /*HSV*/
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/*convert the key (in place)*/
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rgb_to_hsv(key[0], key[1], key[2], &key[0], &key[1], &key[2]);
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composit1_pixel_processor(node, workbuf, inbuf, in[1]->vec, do_rgba_to_hsva, CB_RGBA);
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break;
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case 3: /*YUV*/
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rgb_to_yuv(key[0], key[1], key[2], &key[0], &key[1], &key[2]);
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composit1_pixel_processor(node, workbuf, inbuf, in[1]->vec, do_rgba_to_yuva, CB_RGBA);
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break;
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case 4: /*YCC*/
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rgb_to_ycc(key[0], key[1], key[2], &key[0], &key[1], &key[2]);
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composit1_pixel_processor(node, workbuf, inbuf, in[1]->vec, do_rgba_to_ycca, CB_RGBA);
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/*account for ycc is on a 0..255 scale*/
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t[0]= c->t1*255.0;
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t[1]= c->t2*255.0;
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t[2]= c->t3*255.0;
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break;
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default:
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break;
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}
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/*find min/max tolerances*/
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keymin[0]= key[0]-t[0];
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keymin[1]= key[1]-t[1];
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keymin[2]= key[2]-t[2];
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keymax[0]= key[0]+t[0];
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keymax[1]= key[1]+t[1];
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keymax[2]= key[2]+t[2];
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/*tolerance*/
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*tolerance= sqrt((t[0])*(t[0])+
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(t[1])*(t[1])+
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(t[2])*(t[2]));
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/* note, processor gets a keyvals array passed on as buffer constant */
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composit2_pixel_processor(node, workbuf, workbuf, in[0]->vec, NULL, keyvals, do_diff_matte, CB_RGBA, CB_VAL);
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/*convert back to RGB colorspace*/
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switch(node->custom1) {
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case 1: /*RGB*/
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composit1_pixel_processor(node, workbuf, workbuf, in[1]->vec, do_copy_rgba, CB_RGBA);
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break;
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case 2: /*HSV*/
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composit1_pixel_processor(node, workbuf, workbuf, in[1]->vec, do_hsva_to_rgba, CB_RGBA);
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break;
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case 3: /*YUV*/
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composit1_pixel_processor(node, workbuf, workbuf, in[1]->vec, do_yuva_to_rgba, CB_RGBA);
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break;
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case 4: /*YCC*/
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composit1_pixel_processor(node, workbuf, workbuf, in[1]->vec, do_ycca_to_rgba, CB_RGBA);
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break;
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default:
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break;
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}
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out[0]->data=workbuf;
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if(out[1]->hasoutput)
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out[1]->data=valbuf_from_rgbabuf(workbuf, CHAN_A);
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generate_preview(node, workbuf);
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if(inbuf!=in[0]->data)
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free_compbuf(inbuf);
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}
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static void node_composit_init_diff_matte(bNode *node)
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{
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NodeChroma *c= MEM_callocN(sizeof(NodeChroma), "node chroma");
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node->storage= c;
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c->t1= 0.01f;
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c->t2= 0.01f;
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c->t3= 0.01f;
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c->fsize= 0.0f;
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c->fstrength= 0.0f;
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node->custom1= 1; /* RGB */
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}
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bNodeType cmp_node_diff_matte={
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/* *next,*prev */ NULL, NULL,
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/* type code */ CMP_NODE_DIFF_MATTE,
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/* name */ "Difference Key",
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/* width+range */ 200, 80, 250,
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/* class+opts */ NODE_CLASS_MATTE, NODE_PREVIEW|NODE_OPTIONS,
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/* input sock */ cmp_node_diff_matte_in,
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/* output sock */ cmp_node_diff_matte_out,
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/* storage */ "NodeChroma",
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/* execfunc */ node_composit_exec_diff_matte,
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/* butfunc */ NULL,
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/* initfunc */ node_composit_init_diff_matte,
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/* freestoragefunc */ node_free_standard_storage,
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/* copystoragefunc */ node_copy_standard_storage,
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/* id */ NULL
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};
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