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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_channelMatte.c
* \ingroup cmpnodes
*/
#include "node_composite_util.h"
/* ******************* Channel Matte Node ********************************* */
static bNodeSocketTemplate cmp_node_channel_matte_in[]={
{SOCK_RGBA,1,"Image", 1.0f, 1.0f, 1.0f, 1.0f},
{-1,0,""}
};
static bNodeSocketTemplate cmp_node_channel_matte_out[]={
{SOCK_RGBA,0,"Image"},
{SOCK_FLOAT,0,"Matte"},
{-1,0,""}
};
static void do_normalized_rgba_to_ycca2(bNode *UNUSED(node), float *out, float *in)
{
/*normalize to the range 0.0 to 1.0) */
rgb_to_ycc(in[0],in[1],in[2], &out[0], &out[1], &out[2], BLI_YCC_ITU_BT601);
out[0]=(out[0])/255.0f;
out[1]=(out[1])/255.0f;
out[2]=(out[2])/255.0f;
out[3]=in[3];
}
static void do_normalized_ycca_to_rgba2(bNode *UNUSED(node), float *out, float *in)
{
/*un-normalize the normalize from above */
in[0]=in[0]*255.0f;
in[1]=in[1]*255.0f;
in[2]=in[2]*255.0f;
ycc_to_rgb(in[0],in[1],in[2], &out[0], &out[1], &out[2], BLI_YCC_ITU_BT601);
out[3]=in[3];
}
static void do_channel_matte(bNode *node, float *out, float *in)
{
NodeChroma *c=(NodeChroma *)node->storage;
float alpha=0.0;
switch (c->algorithm) {
case 0: { /* Alpha=key_channel-limit channel */
int key_channel=node->custom2-1;
int limit_channel=c->channel-1;
alpha=in[key_channel]-in[limit_channel];
break;
}
case 1: { /* Alpha=G-MAX(R, B) */
switch (node->custom2) {
case 1: {
alpha=in[0]-MAX2(in[1],in[2]);
break;
}
case 2: {
alpha=in[1]-MAX2(in[0],in[2]);
break;
}
case 3: {
alpha=in[2]-MAX2(in[0],in[1]);
break;
}
default:
break;
}
break;
}
default:
break;
}
/*flip because 0.0 is transparent, not 1.0*/
alpha=1-alpha;
/* test range*/
if (alpha>c->t1) {
alpha=in[3]; /*whatever it was prior */
}
else if (alpha<c->t2) {
alpha=0.0;
}
else {/*blend */
alpha=(alpha-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_channel_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);
/*convert to colorspace*/
switch (node->custom1) {
case CMP_NODE_CHANNEL_MATTE_CS_RGB:
break;
case CMP_NODE_CHANNEL_MATTE_CS_HSV: /*HSV*/
composit1_pixel_processor(node, outbuf, cbuf, in[1]->vec, do_rgba_to_hsva, CB_RGBA);
break;
case CMP_NODE_CHANNEL_MATTE_CS_YUV: /*YUV*/
composit1_pixel_processor(node, outbuf, cbuf, in[1]->vec, do_rgba_to_yuva, CB_RGBA);
break;
case CMP_NODE_CHANNEL_MATTE_CS_YCC: /*YCC*/
composit1_pixel_processor(node, outbuf, cbuf, in[1]->vec, do_normalized_rgba_to_ycca2, CB_RGBA);
break;
default:
break;
}
/*use the selected channel information to do the key */
composit1_pixel_processor(node, outbuf, outbuf, in[1]->vec, do_channel_matte, CB_RGBA);
/*convert back to RGB colorspace in place*/
switch (node->custom1) {
case CMP_NODE_CHANNEL_MATTE_CS_RGB: /*RGB*/
break;
case CMP_NODE_CHANNEL_MATTE_CS_HSV: /*HSV*/
composit1_pixel_processor(node, outbuf, outbuf, in[1]->vec, do_hsva_to_rgba, CB_RGBA);
break;
case CMP_NODE_CHANNEL_MATTE_CS_YUV: /*YUV*/
composit1_pixel_processor(node, outbuf, outbuf, in[1]->vec, do_yuva_to_rgba, CB_RGBA);
break;
case CMP_NODE_CHANNEL_MATTE_CS_YCC: /*YCC*/
composit1_pixel_processor(node, outbuf, outbuf, in[1]->vec, do_normalized_ycca_to_rgba2, CB_RGBA);
break;
default:
break;
}
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);
}
static void node_composit_init_channel_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;
c->t3= 0.0f;
c->fsize= 0.0f;
c->fstrength= 0.0f;
c->algorithm=1; /*max channel limiting */
c->channel=1; /* limit by red */
node->custom1= 1; /* RGB channel */
node->custom2= 2; /* Green Channel */
}
void register_node_type_cmp_channel_matte(bNodeTreeType *ttype)
{
static bNodeType ntype;
node_type_base(ttype, &ntype, CMP_NODE_CHANNEL_MATTE, "Channel Key", NODE_CLASS_MATTE, NODE_PREVIEW|NODE_OPTIONS);
node_type_socket_templates(&ntype, cmp_node_channel_matte_in, cmp_node_channel_matte_out);
node_type_size(&ntype, 200, 80, 250);
node_type_init(&ntype, node_composit_init_channel_matte);
node_type_storage(&ntype, "NodeChroma", node_free_standard_storage, node_copy_standard_storage);
node_type_exec(&ntype, node_composit_exec_channel_matte);
nodeRegisterType(ttype, &ntype);
}
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