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Diffstat (limited to 'release/plugins/sequence/blur.c')
| -rw-r--r-- | release/plugins/sequence/blur.c | 243 |
1 files changed, 243 insertions, 0 deletions
diff --git a/release/plugins/sequence/blur.c b/release/plugins/sequence/blur.c new file mode 100644 index 00000000000..975a0c8df93 --- /dev/null +++ b/release/plugins/sequence/blur.c @@ -0,0 +1,243 @@ +/** + * $Id$ + * + * ***** BEGIN GPL/BL DUAL LICENSE BLOCK ***** + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. The Blender + * Foundation also sells licenses for use in proprietary software under + * the Blender License. See http://www.blender.org/BL/ for information + * about this. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software Foundation, + * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. + * + * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV. + * All rights reserved. + * + * The Original Code is: all of this file. + * + * Contributor(s): none yet. + * + * ***** END GPL/BL DUAL LICENSE BLOCK ***** + */ + +#include "plugin.h" + +/* ******************** GLOBAL VARIABLES ***************** */ + + +char name[24]= "Blur"; + +/* structure for buttons, + * butcode name default min max 0 + */ + +VarStruct varstr[]= { + LABEL, "Input: 1 strip", 0.0, 0.0, 0.0, "", + NUMSLI|FLO, "Blur", 0.5, 0.0, 10.0, "Maximum filtersize", + NUMSLI|FLO, "Gamma", 1.0, 0.4, 2.0, "Gamma correction", + TOG|INT, "Animated", 0.0, 0.0, 1.0, "For (Ipo) animated blur", +}; + +/* The cast struct is for input in the main doit function + Varstr and Cast must have the same variables in the same order */ + +typedef struct Cast { + int dummy; /* because of the 'label' button */ + float blur; + float gamma; + float use_ipo; +} Cast; + + +/* cfra: the current frame */ + +float cfra; + +void plugin_seq_doit(Cast *, float, float, int, int, ImBuf *, ImBuf *, ImBuf *, ImBuf *); + +/* ******************** Fixed functions ***************** */ + +int plugin_seq_getversion(void) +{ + return B_PLUGIN_VERSION; +} + +void plugin_but_changed(int but) +{ +} + +void plugin_init() +{ +} + +void plugin_getinfo(PluginInfo *info) +{ + info->name= name; + info->nvars= sizeof(varstr)/sizeof(VarStruct); + info->cfra= &cfra; + + info->varstr= varstr; + + info->init= plugin_init; + info->seq_doit= (SeqDoit) plugin_seq_doit; + info->callback= plugin_but_changed; +} + + +void blurbuf(struct ImBuf *ibuf, int nr, Cast *cast) +{ + /* nr = number of blurs */ + /* the ibuf->rect is replaced */ + struct ImBuf *tbuf, *ttbuf; + int i, x4; + + tbuf= dupImBuf(ibuf); + x4= ibuf->x/4; + + if(cast->gamma != 1.0) gamwarp(tbuf, cast->gamma); + + /* reduce */ + for(i=0; i<nr; i++) { + ttbuf = onehalf(tbuf); + if (ttbuf) { + freeImBuf(tbuf); + tbuf = ttbuf; + } + if(tbuf->x<4 || tbuf->y<4) break; + } + + /* enlarge */ + for(i=0; i<nr; i++) { + ttbuf = double_x(tbuf); + if (ttbuf) { + freeImBuf(tbuf); + tbuf = ttbuf; + } + ttbuf = double_y(tbuf); + if (ttbuf) { + freeImBuf(tbuf); + tbuf = ttbuf; + } + + if(tbuf->x > x4) { + scaleImBuf(tbuf, ibuf->x, ibuf->y); + break; + } + } + + if(cast->gamma != 1.0) gamwarp(tbuf, 1.0 / cast->gamma); + + freeN(ibuf->rect); + ibuf->rect= tbuf->rect; + freeN(tbuf); + +} + +void doblur(struct ImBuf *mbuf, float fac, Cast *cast) +{ + /* make two filtered images, like a mipmap structure + * fac is filtersize in pixels + */ + struct ImBuf *ibuf, *pbuf; + float ifac, pfac; + int n, b1, b2; + char *irect, *prect, *mrect; + + /* wich buffers ? */ + + if(fac>7.0) fac= 7.0; + if(fac<=1.0) return; + + pfac= 2.0; + + pbuf= dupImBuf(mbuf); + n= 1; + while(pfac < fac) { + blurbuf(pbuf, n, cast); + blurbuf(pbuf, n, cast); + + n++; + pfac+= 1.0; + } + + ifac= pfac; + pfac-= 1.0; + + ibuf= dupImBuf(pbuf); + blurbuf(ibuf, n, cast); + blurbuf(ibuf, n, cast); + + fac= 255.0*(fac-pfac)/(ifac-pfac); + b1= fac; + if(b1>255) b1= 255; + b2= 255-b1; + + if(b1==255) { + memcpy(mbuf->rect, ibuf->rect, 4*ibuf->x*ibuf->y); + } + else if(b1==0) { + memcpy(mbuf->rect, pbuf->rect, 4*pbuf->x*pbuf->y); + } + else { /* interpolate */ + n= ibuf->x*ibuf->y; + irect= (char *)ibuf->rect; + prect= (char *)pbuf->rect; + mrect= (char *)mbuf->rect; + while(n--) { + mrect[0]= (irect[0]*b1+ prect[0]*b2)>>8; + mrect[1]= (irect[1]*b1+ prect[1]*b2)>>8; + mrect[2]= (irect[2]*b1+ prect[2]*b2)>>8; + mrect[3]= (irect[3]*b1+ prect[3]*b2)>>8; + mrect+= 4; + irect+= 4; + prect+= 4; + } + } + freeImBuf(ibuf); + freeImBuf(pbuf); +} + + +void plugin_seq_doit(Cast *cast, float facf0, float facf1, int x, int y, ImBuf *ibuf1, ImBuf *ibuf2, ImBuf *out, ImBuf *use) +{ + float bfacf0, bfacf1; + + if(cast->use_ipo==0) { + bfacf0= bfacf1= cast->blur+1.0; + } + else { + bfacf0 = (facf0 * 6.0) + 1.0; + bfacf1 = (facf1 * 6.0) + 1.0; + } + + memcpy(out->rect, ibuf1->rect, 4*out->x*out->y); + + /* it blurs interlaced, only tested with even fields */ + de_interlace(out); + + /* otherwise scaling goes wrong */ + out->flags &= ~IB_fields; + + doblur(out, bfacf0, cast); /*fieldA*/ + + out->rect += out->x * out->y; + + doblur(out, bfacf1, cast); /*fieldB*/ + + out->rect -= out->x * out->y; + out->flags |= IB_fields; + + interlace(out); + +} + |