CMP_viewer.c

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/*
 * $Id: CMP_viewer.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"


/* **************** VIEWER ******************** */
static bNodeSocketType cmp_node_viewer_in[]= {
        {       SOCK_RGBA, 1, "Image",          0.0f, 0.0f, 0.0f, 1.0f, 0.0f, 1.0f},
        {       SOCK_VALUE, 1, "Alpha",         1.0f, 0.0f, 0.0f, 0.0f, 0.0f, 1.0f},
        {       SOCK_VALUE, 1, "Z",                     1.0f, 0.0f, 0.0f, 0.0f, 0.0f, 1.0f},
        {       -1, 0, ""       }
};


static void node_composit_exec_viewer(void *data, bNode *node, bNodeStack **in, bNodeStack **UNUSED(out))
{
        /* image assigned to output */
        /* stack order input sockets: col, alpha, z */
        
        if(node->id && (node->flag & NODE_DO_OUTPUT)) { /* only one works on out */
                RenderData *rd= data;
                Image *ima= (Image *)node->id;
                ImBuf *ibuf;
                CompBuf *cbuf, *tbuf;
                int rectx, recty;
                void *lock;
                
                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);
                
                /* get size */
                tbuf= in[0]->data?in[0]->data:(in[1]->data?in[1]->data:in[2]->data);
                if(tbuf==NULL) {
                        rectx= 320; recty= 256;
                }
                else {
                        rectx= tbuf->x;
                        recty= tbuf->y;
                }
                
                /* make ibuf, and connect to ima */
                ibuf->x= rectx;
                ibuf->y= recty;
                imb_addrectfloatImBuf(ibuf);
                
                ima->ok= IMA_OK_LOADED;

                /* now we combine the input with ibuf */
                cbuf= alloc_compbuf(rectx, recty, CB_RGBA, 0);  /* no alloc*/
                cbuf->rect= ibuf->rect_float;
                
                /* when no alpha, we can simply copy */
                if(in[1]->data==NULL) {
                        composit1_pixel_processor(node, cbuf, in[0]->data, in[0]->vec, do_copy_rgba, CB_RGBA);
                }
                else
                        composit2_pixel_processor(node, cbuf, in[0]->data, in[0]->vec, in[1]->data, in[1]->vec, do_copy_a_rgba, CB_RGBA, CB_VAL);
                
                /* zbuf option */
                if(in[2]->data) {
                        CompBuf *zbuf= alloc_compbuf(rectx, recty, CB_VAL, 1);
                        ibuf->zbuf_float= zbuf->rect;
                        ibuf->mall |= IB_zbuffloat;
                        
                        composit1_pixel_processor(node, zbuf, in[2]->data, in[2]->vec, do_copy_value, CB_VAL);
                        
                        /* free compbuf, but not the rect */
                        zbuf->malloc= 0;
                        free_compbuf(zbuf);
                }

                BKE_image_release_ibuf(ima, lock);

                generate_preview(data, node, cbuf);
                free_compbuf(cbuf);

        }
        else if(in[0]->data) {
                generate_preview(data, node, in[0]->data);
        }
}

static void node_composit_init_viewer(bNode* node)
{
        ImageUser *iuser= MEM_callocN(sizeof(ImageUser), "node image user");
        node->storage= iuser;
        iuser->sfra= 1;
        iuser->fie_ima= 2;
        iuser->ok= 1;
}

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

        node_type_base(&ntype, CMP_NODE_VIEWER, "Viewer", NODE_CLASS_OUTPUT, NODE_PREVIEW,
                cmp_node_viewer_in, NULL);
        node_type_size(&ntype, 80, 60, 200);
        node_type_init(&ntype, node_composit_init_viewer);
        node_type_storage(&ntype, "ImageUser", node_free_standard_storage, node_copy_standard_storage);
        node_type_exec(&ntype, node_composit_exec_viewer);

        nodeRegisterType(lb, &ntype);
}