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/*
* ***** BEGIN GPL 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.
*
* 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
* The Original Code is Copyright (C) 2006 Blender Foundation.
* All rights reserved.
*
* The Original Code is: all of this file.
*
* Contributor(s): Bob Holcomb .
*
* ***** END GPL LICENSE BLOCK *****
*/
/** \file blender/nodes/composite/nodes/node_composite_lummaMatte.c
* \ingroup cmpnodes
*/
#include "node_composite_util.h"
/* ******************* Luma Matte Node ********************************* */
static bNodeSocketTemplate cmp_node_luma_matte_in[]={
{SOCK_RGBA, 1, N_("Image"), 1.0f, 1.0f, 1.0f, 1.0f},
{-1, 0, ""}
};
static bNodeSocketTemplate cmp_node_luma_matte_out[]={
{SOCK_RGBA, 0, N_("Image")},
{SOCK_FLOAT, 0, N_("Matte")},
{-1, 0, ""}
};
#ifdef WITH_COMPOSITOR_LEGACY
static void do_luma_matte(bNode *node, float *out, float *in)
{
NodeChroma *c=(NodeChroma *)node->storage;
float alpha;
/* test range*/
if (in[0]>c->t1) {
alpha=1.0;
}
else if (in[0]<c->t2) {
alpha=0.0;
}
else {/*blend */
alpha=(in[0]-c->t2)/(c->t1-c->t2);
}
/* don't make something that was more transparent less transparent */
if (alpha<in[3]) {
out[3]=alpha;
}
else {
out[3]=in[3];
}
}
static void node_composit_exec_luma_matte(void *data, bNode *node, bNodeStack **in, bNodeStack **out)
{
CompBuf *cbuf;
CompBuf *outbuf;
if (in[0]->hasinput==0) return;
if (in[0]->data==NULL) return;
if (out[0]->hasoutput==0 && out[1]->hasoutput==0) return;
cbuf=typecheck_compbuf(in[0]->data, CB_RGBA);
outbuf=dupalloc_compbuf(cbuf);
composit1_pixel_processor(node, outbuf, cbuf, in[1]->vec, do_rgba_to_yuva, CB_RGBA);
composit1_pixel_processor(node, outbuf, outbuf, in[1]->vec, do_luma_matte, CB_RGBA);
composit1_pixel_processor(node, outbuf, outbuf, in[1]->vec, do_yuva_to_rgba, CB_RGBA);
generate_preview(data, node, outbuf);
out[0]->data=outbuf;
if (out[1]->hasoutput)
out[1]->data=valbuf_from_rgbabuf(outbuf, CHAN_A);
if (cbuf!=in[0]->data)
free_compbuf(cbuf);
}
#endif /* WITH_COMPOSITOR_LEGACY */
static void node_composit_init_luma_matte(bNodeTree *UNUSED(ntree), bNode *node, bNodeTemplate *UNUSED(ntemp))
{
NodeChroma *c= MEM_callocN(sizeof(NodeChroma), "node chroma");
node->storage=c;
c->t1= 1.0f;
c->t2= 0.0f;
}
void register_node_type_cmp_luma_matte(bNodeTreeType *ttype)
{
static bNodeType ntype;
node_type_base(ttype, &ntype, CMP_NODE_LUMA_MATTE, "Luminance Key", NODE_CLASS_MATTE, NODE_PREVIEW|NODE_OPTIONS);
node_type_socket_templates(&ntype, cmp_node_luma_matte_in, cmp_node_luma_matte_out);
node_type_size(&ntype, 200, 80, 250);
node_type_init(&ntype, node_composit_init_luma_matte);
node_type_storage(&ntype, "NodeChroma", node_free_standard_storage, node_copy_standard_storage);
#ifdef WITH_COMPOSITOR_LEGACY
node_type_exec(&ntype, node_composit_exec_luma_matte);
#endif
nodeRegisterType(ttype, &ntype);
}
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