CMP_premulkey.c

Go to the documentation of this file.

/*
* $Id: CMP_premulkey.c 35237 2011-02-27 20:13:22Z jesterking $
*
* ***** 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): none yet.
* 
* ***** END GPL LICENSE BLOCK *****

*/

#include "../CMP_util.h"

/* **************** Premul and Key Alpha Convert ******************** */

static bNodeSocketType cmp_node_premulkey_in[]= {
        {       SOCK_RGBA, 1, "Image",                  0.8f, 0.8f, 0.8f, 1.0f, 0.0f, 1.0f},
        {       -1, 0, ""       }
};
static bNodeSocketType cmp_node_premulkey_out[]= {
        {       SOCK_RGBA, 0, "Image",                  0.0f, 0.0f, 0.0f, 1.0f, 0.0f, 1.0f},
        {       -1, 0, ""       }
};

static void node_composit_exec_premulkey(void *UNUSED(data), bNode *node, bNodeStack **in, bNodeStack **out)
{
        if(out[0]->hasoutput==0)
                return;
        
        if(in[0]->data) {
                CompBuf *stackbuf, *cbuf= typecheck_compbuf(in[0]->data, CB_RGBA);

                stackbuf= dupalloc_compbuf(cbuf);
                premul_compbuf(stackbuf, node->custom1 == 1);

                out[0]->data = stackbuf;
                if(cbuf != in[0]->data)
                        free_compbuf(cbuf);
        }
}

void register_node_type_cmp_premulkey(ListBase *lb)
{
        static bNodeType ntype;

        node_type_base(&ntype, CMP_NODE_PREMULKEY, "Alpha Convert", NODE_CLASS_CONVERTOR, NODE_OPTIONS,
                cmp_node_premulkey_in, cmp_node_premulkey_out);
        node_type_size(&ntype, 140, 100, 320);
        node_type_exec(&ntype, node_composit_exec_premulkey);

        nodeRegisterType(lb, &ntype);
}