CMP_sepcombHSVA.c

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/*
 * $Id: CMP_sepcombHSVA.c 36276 2011-04-21 15:53:30Z campbellbarton $
 *
 * ***** 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"


/* **************** SEPARATE HSVA ******************** */
static bNodeSocketType cmp_node_sephsva_in[]= {
        {       SOCK_RGBA, 1, "Image",                  0.8f, 0.8f, 0.8f, 1.0f, 0.0f, 1.0f},
        {       -1, 0, ""       }
};
static bNodeSocketType cmp_node_sephsva_out[]= {
        {       SOCK_VALUE, 0, "H",                     0.0f, 0.0f, 0.0f, 1.0f, 0.0f, 1.0f},
        {       SOCK_VALUE, 0, "S",                     0.0f, 0.0f, 0.0f, 1.0f, 0.0f, 1.0f},
        {       SOCK_VALUE, 0, "V",                     0.0f, 0.0f, 0.0f, 1.0f, 0.0f, 1.0f},
        {       SOCK_VALUE, 0, "A",                     0.0f, 0.0f, 0.0f, 1.0f, 0.0f, 1.0f},
        {       -1, 0, ""       }
};

static void do_sephsva(bNode *UNUSED(node), float *out, float *in)
{
        float h, s, v;
        
        rgb_to_hsv(in[0], in[1], in[2], &h, &s, &v);
        
        out[0]= h;
        out[1]= s;
        out[2]= v;
        out[3]= in[3];
}

static void node_composit_exec_sephsva(void *UNUSED(data), bNode *node, bNodeStack **in, bNodeStack **out)
{
        /* stack order out: bw channels */
        /* stack order in: col */

        /* input no image? then only color operation */
        if(in[0]->data==NULL) {
                float h, s, v;
        
        rgb_to_hsv(in[0]->vec[0], in[0]->vec[1], in[0]->vec[2], &h, &s, &v);
                
                out[0]->vec[0] = h;
                out[1]->vec[0] = s;
                out[2]->vec[0] = v;
                out[3]->vec[0] = in[0]->vec[3];
        }
        else if ((out[0]->hasoutput) || (out[1]->hasoutput) || (out[2]->hasoutput) || (out[3]->hasoutput)) {
                /* create new buffer so input buffer doesn't get corrupted */
                CompBuf *cbuf= dupalloc_compbuf(in[0]->data);
                CompBuf *cbuf2= typecheck_compbuf(cbuf, CB_RGBA);

                /* convert the RGB stackbuf to an HSV representation */
                composit1_pixel_processor(node, cbuf2, cbuf2, in[0]->vec, do_sephsva, CB_RGBA);

                /* separate each of those channels */
                if(out[0]->hasoutput)
                        out[0]->data= valbuf_from_rgbabuf(cbuf2, CHAN_R);
                if(out[1]->hasoutput)
                        out[1]->data= valbuf_from_rgbabuf(cbuf2, CHAN_G);
                if(out[2]->hasoutput)
                        out[2]->data= valbuf_from_rgbabuf(cbuf2, CHAN_B);
                if(out[3]->hasoutput)
                        out[3]->data= valbuf_from_rgbabuf(cbuf2, CHAN_A);

                /*not used anymore */
                if(cbuf2!=cbuf)
                        free_compbuf(cbuf2);
                free_compbuf(cbuf);     
        }
}

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

        node_type_base(&ntype, CMP_NODE_SEPHSVA, "Separate HSVA", NODE_CLASS_CONVERTOR, 0,
                cmp_node_sephsva_in, cmp_node_sephsva_out);
        node_type_size(&ntype, 80, 40, 140);
        node_type_exec(&ntype, node_composit_exec_sephsva);

        nodeRegisterType(lb, &ntype);
}


/* **************** COMBINE HSVA ******************** */
static bNodeSocketType cmp_node_combhsva_in[]= {
   {    SOCK_VALUE, 1, "H",                     0.0f, 0.0f, 0.0f, 1.0f, 0.0f, 1.0f},
   {    SOCK_VALUE, 1, "S",                     0.0f, 0.0f, 0.0f, 1.0f, 0.0f, 1.0f},
   {    SOCK_VALUE, 1, "V",                     0.0f, 0.0f, 0.0f, 1.0f, 0.0f, 1.0f},
   {    SOCK_VALUE, 1, "A",                     1.0f, 0.0f, 0.0f, 1.0f, 0.0f, 1.0f},
   {    -1, 0, ""       }
};
static bNodeSocketType cmp_node_combhsva_out[]= {
   {    SOCK_RGBA, 0, "Image",                  0.8f, 0.8f, 0.8f, 1.0f, 0.0f, 1.0f},
   {    -1, 0, ""       }
};

static void do_comb_hsva(bNode *UNUSED(node), float *out, float *in1, float *in2, float *in3, float *in4)
{
        float r,g,b;
        hsv_to_rgb(in1[0], in2[0], in3[0], &r, &g, &b);

        out[0] = r;
        out[1] = g;
        out[2] = b;
        out[3] = in4[0];
}

static void node_composit_exec_combhsva(void *UNUSED(data), bNode *node, bNodeStack **in, bNodeStack **out)
{
        /* stack order out: 1 rgba channels */
        /* stack order in: 4 value channels */

        /* input no image? then only color operation */
        if((in[0]->data==NULL) && (in[1]->data==NULL) && (in[2]->data==NULL) && (in[3]->data==NULL)) {
                out[0]->vec[0] = in[0]->vec[0];
                out[0]->vec[1] = in[1]->vec[0];
                out[0]->vec[2] = in[2]->vec[0];
                out[0]->vec[3] = in[3]->vec[0];
        }
        else {
                /* make output size of first available input image */
                CompBuf *cbuf;
                CompBuf *stackbuf;

                /* allocate a CompBuf the size of the first available input */
                if (in[0]->data) cbuf = in[0]->data;
                else if (in[1]->data) cbuf = in[1]->data;
                else if (in[2]->data) cbuf = in[2]->data;
                else cbuf = in[3]->data;

                stackbuf = alloc_compbuf(cbuf->x, cbuf->y, CB_RGBA, 1); /* allocs */

                composit4_pixel_processor(node, stackbuf, in[0]->data, in[0]->vec, in[1]->data, in[1]->vec,
                in[2]->data, in[2]->vec, in[3]->data, in[3]->vec,
                do_comb_hsva, CB_VAL, CB_VAL, CB_VAL, CB_VAL);

                out[0]->data= stackbuf;
        }
}

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

        node_type_base(&ntype, CMP_NODE_COMBHSVA, "Combine HSVA", NODE_CLASS_CONVERTOR, NODE_OPTIONS,
                cmp_node_combhsva_in, cmp_node_combhsva_out);
        node_type_size(&ntype, 80, 40, 140);
        node_type_exec(&ntype, node_composit_exec_combhsva);

        nodeRegisterType(lb, &ntype);
}