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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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*
* The Original Code is Copyright (C) 2006 Blender Foundation.
* All rights reserved.
*
* The Original Code is: all of this file.
*
* Contributor(s): Matt Ebb.
*
* ***** END GPL LICENSE BLOCK *****
*/
#include "../CMP_util.h"
/* ******************* Color Balance ********************************* */
static bNodeSocketType cmp_node_colorbalance_in[]={
{SOCK_VALUE, 1, "Fac", 1.0f, 0.0f, 0.0f, 1.0f, 0.0f, 1.0f},
{SOCK_RGBA,1,"Image", 0.8f, 0.8f, 0.8f, 1.0f, 0.0f, 1.0f},
{-1,0,""}
};
static bNodeSocketType cmp_node_colorbalance_out[]={
{SOCK_RGBA,0,"Image", 0.0f, 0.0f, 1.0f, 1.0f, -1.0f, 1.0f},
{-1,0,""}
};
DO_INLINE float colorbalance(float in, float slope, float offset, float power)
{
float x = in * slope + offset;
/* prevent NaN */
if (x < 0.f) x = 0.f;
return powf(x, power);
}
static void do_colorbalance(bNode *node, float* out, float *in)
{
NodeColorBalance *n= (NodeColorBalance *)node->storage;
out[0] = colorbalance(in[0], n->slope[0], n->offset[0], n->power[0]);
out[1] = colorbalance(in[1], n->slope[1], n->offset[1], n->power[1]);
out[2] = colorbalance(in[2], n->slope[2], n->offset[2], n->power[2]);
out[3] = in[3];
}
static void do_colorbalance_fac(bNode *node, float* out, float *in, float *fac)
{
NodeColorBalance *n= (NodeColorBalance *)node->storage;
const float mfac= 1.0f - *fac;
out[0] = mfac*in[0] + *fac * colorbalance(in[0], n->slope[0], n->offset[0], n->power[0]);
out[1] = mfac*in[1] + *fac * colorbalance(in[1], n->slope[1], n->offset[1], n->power[1]);
out[2] = mfac*in[2] + *fac * colorbalance(in[2], n->slope[2], n->offset[2], n->power[2]);
out[3] = in[3];
}
static void node_composit_exec_colorbalance(void *data, bNode *node, bNodeStack **in, bNodeStack **out)
{
CompBuf *cbuf= in[1]->data;
CompBuf *stackbuf;
/* stack order input: fac, image */
/* stack order output: image */
if(out[0]->hasoutput==0) return;
if(in[0]->vec[0] == 0.f && in[0]->data == NULL) {
out[0]->data = pass_on_compbuf(cbuf);
return;
}
if (cbuf) {
stackbuf= alloc_compbuf(cbuf->x, cbuf->y, CB_RGBA, 1); /* create output based on image input */
if ((in[0]->data==NULL) && (in[0]->vec[0] == 1.f)) {
composit1_pixel_processor(node, stackbuf, in[1]->data, in[1]->vec, do_colorbalance, CB_RGBA);
}
else {
composit2_pixel_processor(node, stackbuf, in[1]->data, in[1]->vec, in[0]->data, in[0]->vec, do_colorbalance_fac, CB_RGBA, CB_VAL);
}
out[0]->data=stackbuf;
}
}
static void node_composit_init_colorbalance(bNode *node)
{
NodeColorBalance *n= node->storage= MEM_callocN(sizeof(NodeColorBalance), "node colorbalance");
n->slope[0] = n->slope[1] = n->slope[2] = 1.f;
n->offset[0] = n->offset[1] = n->offset[2] = 0.f;
n->power[0] = n->power[1] = n->power[2] = 1.f;
/* for ui, converted to slope/offset/power in RNA */
n->lift[0] = n->lift[1] = n->lift[2] = 0.5f;
n->gamma[0] = n->gamma[1] = n->gamma[2] = 0.5f;
n->gain[0] = n->gain[1] = n->gain[2] = 0.5f;
}
bNodeType cmp_node_colorbalance={
/* *next,*prev */ NULL, NULL,
/* type code */ CMP_NODE_COLORBALANCE,
/* name */ "Color Balance",
/* width+range */ 400, 200, 400,
/* class+opts */ NODE_CLASS_OP_COLOR, NODE_OPTIONS,
/* input sock */ cmp_node_colorbalance_in,
/* output sock */ cmp_node_colorbalance_out,
/* storage */ "NodeColorBalance",
/* execfunc */ node_composit_exec_colorbalance,
/* butfunc */ NULL,
/* initfunc */ node_composit_init_colorbalance,
/* freestoragefunc */ node_free_standard_storage,
/* copystoragefunc */ node_copy_standard_storage,
/* id */ NULL
};
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