node_composite_splitViewer.c

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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): none yet.
 *
 * ***** END GPL LICENSE BLOCK *****
 */

#include "node_composite_util.h"

/* **************** SPLIT VIEWER ******************** */
static bNodeSocketTemplate cmp_node_splitviewer_in[]= {
    {   SOCK_RGBA, 1, "Image",      0.0f, 0.0f, 0.0f, 1.0f},
    {   SOCK_RGBA, 1, "Image",      0.0f, 0.0f, 0.0f, 1.0f},
    {   -1, 0, ""   }
};

static void do_copy_split_rgba(bNode *UNUSED(node), float *out, float *in1, float *in2, float *fac)
{
    if(*fac==0.0f) {
        copy_v4_v4(out, in1);
    }
    else {
        copy_v4_v4(out, in2);
    }
}

static void node_composit_exec_splitviewer(void *data, bNode *node, bNodeStack **in, bNodeStack **UNUSED(out))
{
    /* image assigned to output */
    /* stack order input sockets: image image */
    
    if(in[0]->data==NULL || in[1]->data==NULL)
        return;
    
    if(node->id && (node->flag & NODE_DO_OUTPUT)) { /* only one works on out */
        Image *ima= (Image *)node->id;
        RenderData *rd= data;
        ImBuf *ibuf;
        CompBuf *cbuf, *buf1, *buf2, *mask;
        int x, y;
        float offset;
        void *lock;
        
        buf1= typecheck_compbuf(in[0]->data, CB_RGBA);
        buf2= typecheck_compbuf(in[1]->data, CB_RGBA);
        
        BKE_image_user_calc_frame(node->storage, rd->cfra, 0);
        
        /* always returns for viewer image, but we check nevertheless */
        ibuf= BKE_image_acquire_ibuf(ima, node->storage, &lock);
        if(ibuf==NULL) {
            printf("node_composit_exec_viewer error\n");
            BKE_image_release_ibuf(ima, lock);
            return;
        }
        
        /* free all in ibuf */
        imb_freerectImBuf(ibuf);
        imb_freerectfloatImBuf(ibuf);
        IMB_freezbuffloatImBuf(ibuf);
        
        /* make ibuf, and connect to ima */
        ibuf->x= buf1->x;
        ibuf->y= buf1->y;
        imb_addrectfloatImBuf(ibuf);
        
        ima->ok= IMA_OK_LOADED;

        /* output buf */
        cbuf= alloc_compbuf(buf1->x, buf1->y, CB_RGBA, 0);  /* no alloc*/
        cbuf->rect= ibuf->rect_float;
        
        /* mask buf */
        mask= alloc_compbuf(buf1->x, buf1->y, CB_VAL, 1);
        
        
        /* Check which offset mode is selected and limit offset if needed */
        if(node->custom2 == 0) {
            offset = buf1->x / 100.0f * node->custom1;
            CLAMP(offset, 0, buf1->x);
        }
        else {
            offset = buf1->y / 100.0f * node->custom1;
            CLAMP(offset, 0, buf1->y);
        }
        
        if(node->custom2 == 0) {
            for(y=0; y<buf1->y; y++) {
                float *fac= mask->rect + y*buf1->x;
                for(x=offset; x>0; x--, fac++)
                    *fac= 1.0f;
            }
        }
        else {
            for(y=0; y<offset; y++) {
                float *fac= mask->rect + y*buf1->x;
                for(x=buf1->x; x>0; x--, fac++)
                    *fac= 1.0f;
            }
        }
        
        composit3_pixel_processor(node, cbuf, buf1, in[0]->vec, buf2, in[1]->vec, mask, NULL, do_copy_split_rgba, CB_RGBA, CB_RGBA, CB_VAL);
        
        BKE_image_release_ibuf(ima, lock);
        
        generate_preview(data, node, cbuf);
        free_compbuf(cbuf);
        free_compbuf(mask);
        
        if(in[0]->data != buf1) 
            free_compbuf(buf1);
        if(in[1]->data != buf2) 
            free_compbuf(buf2);
    }
}

static void node_composit_init_splitviewer(bNodeTree *UNUSED(ntree), bNode* node, bNodeTemplate *UNUSED(ntemp))
{
    ImageUser *iuser= MEM_callocN(sizeof(ImageUser), "node image user");
    node->storage= iuser;
    iuser->sfra= 1;
    iuser->fie_ima= 2;
    iuser->ok= 1;
    node->custom1= 50;  /* default 50% split */
}

void register_node_type_cmp_splitviewer(bNodeTreeType *ttype)
{
    static bNodeType ntype;

    node_type_base(ttype, &ntype, CMP_NODE_SPLITVIEWER, "SplitViewer", NODE_CLASS_OUTPUT, NODE_PREVIEW|NODE_OPTIONS);
    node_type_socket_templates(&ntype, cmp_node_splitviewer_in, NULL);
    node_type_size(&ntype, 140, 100, 320);
    node_type_init(&ntype, node_composit_init_splitviewer);
    node_type_storage(&ntype, "ImageUser", node_free_standard_storage, node_copy_standard_storage);
    node_type_exec(&ntype, node_composit_exec_splitviewer);
    /* Do not allow muting this node. */
    node_type_mute(&ntype, NULL, NULL);

    nodeRegisterType(ttype, &ntype);
}