Undo revision 23130 which was a merge with 2.5, a messy one because I did something...
[blender.git] / source / blender / nodes / intern / CMP_nodes / CMP_lummaMatte.c
1 /**
2  * $Id$
3  *
4  * ***** BEGIN GPL LICENSE BLOCK *****
5  *
6  * This program is free software; you can redistribute it and/or
7  * modify it under the terms of the GNU General Public License
8  * as published by the Free Software Foundation; either version 2
9  * of the License, or (at your option) any later version. 
10  *
11  * This program is distributed in the hope that it will be useful,
12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
14  * GNU General Public License for more details.
15  *
16  * You should have received a copy of the GNU General Public License
17  * along with this program; if not, write to the Free Software Foundation,
18  * Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
19  *
20  * The Original Code is Copyright (C) 2006 Blender Foundation.
21  * All rights reserved.
22  *
23  * The Original Code is: all of this file.
24  *
25  * Contributor(s): none yet.
26  *
27  * ***** END GPL LICENSE BLOCK *****
28  */
29
30 #include "../CMP_util.h"
31
32
33 /* ******************* Luma Matte Node ********************************* */
34 static bNodeSocketType cmp_node_luma_matte_in[]={
35         {SOCK_RGBA,1,"Image", 0.8f, 0.8f, 0.8f, 1.0f, 0.0f, 1.0f},
36         {-1,0,""}
37 };
38
39 static bNodeSocketType cmp_node_luma_matte_out[]={
40         {SOCK_RGBA,0,"Image", 0.8f, 0.8f, 0.8f, 1.0f, 0.0f, 1.0f},
41         {SOCK_VALUE,0,"Matte",0.0f, 0.0f, 0.0f, 1.0f, 0.0f, 1.0f},
42         {-1,0,""}
43 };
44
45 static void do_luma_matte(bNode *node, float *out, float *in)
46 {
47         NodeChroma *c=(NodeChroma *)node->storage;
48         float alpha;
49
50         alpha=0.0;
51
52         /* test range*/
53         if(in[0]>c->t1) {
54                 alpha=1.0;
55         }
56         else if(in[0]<c->t2){
57                 alpha=0.0;
58         }
59         else {/*blend */
60                 alpha=(in[0]-c->t2)/(c->t1-c->t2);
61         }
62         
63         /* don't make something that was more transparent less transparent */
64         if (alpha<in[3]) {
65                 out[3]=alpha;
66         }
67         else {
68                 out[3]=in[3];
69         }
70
71 }
72
73 static void node_composit_exec_luma_matte(void *data, bNode *node, bNodeStack **in, bNodeStack **out)
74 {
75         CompBuf *cbuf;
76         CompBuf *outbuf;
77         
78         if(in[0]->hasinput==0)  return;
79         if(in[0]->data==NULL) return;
80         if(out[0]->hasoutput==0 && out[1]->hasoutput==0) return;
81         
82         cbuf=typecheck_compbuf(in[0]->data, CB_RGBA);
83         
84         outbuf=dupalloc_compbuf(cbuf);
85
86         composit1_pixel_processor(node, outbuf, cbuf, in[1]->vec, do_rgba_to_yuva, CB_RGBA);
87         composit1_pixel_processor(node, outbuf, outbuf, in[1]->vec, do_luma_matte, CB_RGBA);
88         composit1_pixel_processor(node, outbuf, outbuf, in[1]->vec, do_yuva_to_rgba, CB_RGBA);
89         
90         generate_preview(node, outbuf);
91         out[0]->data=outbuf;
92         if (out[1]->hasoutput)
93                 out[1]->data=valbuf_from_rgbabuf(outbuf, CHAN_A);
94         if(cbuf!=in[0]->data)
95                 free_compbuf(cbuf);
96 }
97
98 static void node_composit_init_luma_matte(bNode *node)
99 {
100    NodeChroma *c= MEM_callocN(sizeof(NodeChroma), "node chroma");
101    node->storage=c;
102    c->t1= 1.0f;
103    c->t2= 0.0f;
104 };
105
106 bNodeType cmp_node_luma_matte={
107         /* *next,*prev */       NULL, NULL,
108         /* type code   */       CMP_NODE_LUMA_MATTE,
109         /* name        */       "Luminance Key",
110         /* width+range */       200, 80, 250,
111         /* class+opts  */       NODE_CLASS_MATTE, NODE_PREVIEW|NODE_OPTIONS,
112         /* input sock  */       cmp_node_luma_matte_in,
113         /* output sock */       cmp_node_luma_matte_out,
114         /* storage     */       "NodeChroma",
115         /* execfunc    */       node_composit_exec_luma_matte,
116         /* butfunc     */       NULL,
117         /* initfunc    */       node_composit_init_luma_matte,
118         /* freestoragefunc    */        node_free_standard_storage,
119         /* copystoragefunc    */        node_copy_standard_storage,
120         /* id          */       NULL
121 };
122