286 lines
6.3 KiB
C
286 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) 2001-2002 by NaN Holding BV.
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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 <stdio.h>
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#include "plugin.h"
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/* ******************** GLOBAL VARIABLES ***************** */
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char name[24]= "Blur";
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/* structure for buttons,
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* butcode name default min max 0
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*/
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VarStruct varstr[]= {
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LABEL, "Input: 1 strip", 0.0, 0.0, 0.0, "",
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NUMSLI|FLO, "Blur", 0.5, 0.0, 10.0, "Maximum filtersize",
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NUMSLI|FLO, "Gamma", 1.0, 0.4, 2.0, "Gamma correction",
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TOG|INT, "Animated", 0.0, 0.0, 1.0, "For (Ipo) animated blur",
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NUM|INT, "debug", 0.0, 0.0, 2.0,
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"0:off 1: show primary blur buffer 2: show 2nd blur buffer",
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};
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/* The cast struct is for input in the main doit function
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Varstr and Cast must have the same variables in the same order */
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typedef struct Cast {
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int dummy; /* because of the 'label' button */
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float blur;
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float gamma;
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float use_ipo;
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int show;
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} Cast;
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/* cfra: the current frame */
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float cfra;
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void plugin_seq_doit(Cast *, float, float, int, int, ImBuf *, ImBuf *, ImBuf *, ImBuf *);
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/* ******************** Fixed functions ***************** */
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int plugin_seq_getversion(void)
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{
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return B_PLUGIN_VERSION;
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}
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void plugin_but_changed(int but)
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{
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}
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void plugin_init(void)
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{
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}
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void plugin_getinfo(PluginInfo *info)
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{
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info->name= name;
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info->nvars= sizeof(varstr)/sizeof(VarStruct);
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info->cfra= &cfra;
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info->varstr= varstr;
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info->init= plugin_init;
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info->seq_doit= (SeqDoit) plugin_seq_doit;
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info->callback= plugin_but_changed;
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}
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void blurbuf(struct ImBuf *ibuf, int nr, Cast *cast)
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{
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/* nr = number of blurs */
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/* the ibuf->rect is replaced */
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struct ImBuf *tbuf, *ttbuf;
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int i, x4;
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tbuf= dupImBuf(ibuf);
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x4= ibuf->x/4;
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/* This doesn't seem to work... paprmh */
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if(cast->gamma != 1.0) gamwarp(tbuf, cast->gamma);
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/* reduce */
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for(i=0; i<nr; i++) {
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ttbuf = onehalf(tbuf);
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if (ttbuf) {
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freeImBuf(tbuf);
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tbuf = ttbuf;
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}
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if(tbuf->x<4 || tbuf->y<4) break;
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}
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/* enlarge */
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for(i=0; i<nr; i++) {
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ttbuf = double_x(tbuf);
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if (ttbuf) {
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freeImBuf(tbuf);
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tbuf = ttbuf;
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}
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ttbuf = double_y(tbuf);
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if (ttbuf) {
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freeImBuf(tbuf);
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tbuf = ttbuf;
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}
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if(tbuf->x > x4) {
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scaleImBuf(tbuf, ibuf->x, ibuf->y);
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break;
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}
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}
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/* this doesn't seem to work...paprmh*/
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if(cast->gamma != 1.0) gamwarp(tbuf, 1.0 / cast->gamma);
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if(ibuf->rect)memcpy(ibuf->rect, tbuf->rect, 4*ibuf->x*ibuf->y);
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if(ibuf->rect_float)
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memcpy(ibuf->rect_float, tbuf->rect_float, 4*ibuf->x*ibuf->y*sizeof(float));
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freeImBuf(tbuf);
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}
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void doblur(struct ImBuf *mbuf, float fac, Cast *cast)
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{
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/* make two filtered images, like a mipmap structure
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* fac is filtersize in pixels
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*/
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struct ImBuf *ibuf, *pbuf;
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float ifac, pfac, infac;
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int n, b1, b2;
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char *irect, *prect, *mrect;
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float *irectf, *prectf, *mrectf;
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/* wich buffers ? */
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if(fac>7.0) fac= 7.0;
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if(fac<=1.0) return;
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pfac= 2.0;
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pbuf= dupImBuf(mbuf);
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n= 1;
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while(pfac < fac) {
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blurbuf(pbuf, n, cast);
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blurbuf(pbuf, n, cast);
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n++;
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pfac+= 1.0;
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}
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ifac= pfac;
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pfac-= 1.0;
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ibuf= dupImBuf(pbuf);
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blurbuf(ibuf, n, cast);
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blurbuf(ibuf, n, cast);
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fac= (fac-pfac)/(ifac-pfac);
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n= mbuf->x*mbuf->y;
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if(cast->show) fac=cast->show-1;
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if(mbuf->rect_float){
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if(fac>=1) {
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memcpy(mbuf->rect_float, ibuf->rect_float, 4*n*sizeof(float));
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}
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else if(fac<=0) {
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memcpy(mbuf->rect_float, pbuf->rect_float, 4*n*sizeof(float));
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}
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else { /* interpolate */
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infac= 1-fac;
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irectf= (float *)ibuf->rect_float;
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prectf= (float *)pbuf->rect_float;
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mrectf= (float *)mbuf->rect_float;
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while(n--) {
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mrectf[0]= irectf[0]*fac+ prectf[0]*infac;
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mrectf[1]= irectf[1]*fac+ prectf[1]*infac;
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mrectf[2]= irectf[2]*fac+ prectf[2]*infac;
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mrectf[3]= irectf[3]*fac+ prectf[3]*infac;
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mrectf+= 4;
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irectf+= 4;
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prectf+= 4;
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}
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}
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}
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else if(mbuf->rect){
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b1= (int)fac*255.0;
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if(b1>255) b1= 255;
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b2= 255-b1;
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if(b1==255) {
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memcpy(mbuf->rect, ibuf->rect, 4*n);
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}
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else if(b1==0) {
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memcpy(mbuf->rect, pbuf->rect, 4*n);
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}
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else { /* interpolate */
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irect= (char *)ibuf->rect;
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prect= (char *)pbuf->rect;
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mrect= (char *)mbuf->rect;
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while(n--) {
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mrect[0]= (irect[0]*b1+ prect[0]*b2)>>8;
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mrect[1]= (irect[1]*b1+ prect[1]*b2)>>8;
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mrect[2]= (irect[2]*b1+ prect[2]*b2)>>8;
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mrect[3]= (irect[3]*b1+ prect[3]*b2)>>8;
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mrect+= 4;
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irect+= 4;
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prect+= 4;
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}
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}
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}
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freeImBuf(ibuf);
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freeImBuf(pbuf);
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}
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void plugin_seq_doit(Cast *cast, float facf0, float facf1, int x, int y, ImBuf *ibuf1, ImBuf *ibuf2, ImBuf *out, ImBuf *use)
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{
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float bfacf0, bfacf1;
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if(cast->use_ipo==0) {
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bfacf0= bfacf1= cast->blur+1.0;
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}
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else {
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bfacf0 = (facf0 * 6.0) + 1.0;
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bfacf1 = (facf1 * 6.0) + 1.0;
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}
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if(out->rect) memcpy(out->rect, ibuf1->rect, 4*out->x*out->y);
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if(out->rect_float) memcpy(out->rect_float, ibuf1->rect_float, 4*out->x*out->y*sizeof(float));
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/****************I can't get this field code to work... works ok without...paprmh****************/
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/* it blurs interlaced, only tested with even fields */
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/* de_interlace(out);*/
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/* otherwise scaling goes wrong */
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/* out->flags &= ~IB_fields;*/
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doblur(out, bfacf0, cast); /*fieldA*/
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/* if(out->rect)out->rect += out->x * out->y;
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if(out->rect_float)out->rect_float += out->x * out->y;
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doblur(out, bfacf1, cast);*/ /*fieldB*/
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/* if(out->rect)out->rect -= out->x * out->y;
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if(out->rect_float)out->rect_float -= out->x * out->y;
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out->flags |= IB_fields;
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interlace(out);*/
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}
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