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Viewing changes to source/blender/nodes/composite/nodes/node_composite_brightness.c

  • Committer: Package Import Robot
  • Author(s): Jeremy Bicha
  • Date: 2013-03-06 12:08:47 UTC
  • mfrom: (1.5.1) (14.1.8 experimental)
  • Revision ID: package-import@ubuntu.com-20130306120847-frjfaryb2zrotwcg
Tags: 2.66a-1ubuntu1
https://launchpad.net/bugs/1076930
https://launchpad.net/bugs/1089256
https://launchpad.net/bugs/1052743
https://launchpad.net/bugs/999024
* Resynchronize with Debian (LP: #1076930, #1089256, #1052743, #999024,
  #1122888, #1147084)
* debian/control:
  - Lower build-depends on libavcodec-dev since we're not
    doing the libav9 transition in Ubuntu yet

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Lines of Context:
source/blender/nodes/composite/nodes/node_composite_brightness.c
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/* **************** Brigh and contrsast  ******************** */
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static bNodeSocketTemplate cmp_node_brightcontrast_in[]= {
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        {       SOCK_RGBA, 1, "Image",                  1.0f, 1.0f, 1.0f, 1.0f},
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        {       SOCK_FLOAT, 1, "Bright",                0.0f, 0.0f, 0.0f, 0.0f, -100.0f, 100.0f, PROP_NONE},
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        {       SOCK_FLOAT, 1, "Contrast",              0.0f, 0.0f, 0.0f, 0.0f, -100.0f, 100.0f, PROP_NONE},
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        {       -1, 0, ""       }
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};
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static bNodeSocketTemplate cmp_node_brightcontrast_out[]= {
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        {       SOCK_RGBA, 0, "Image"},
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        {       -1, 0, ""       }
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};
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static void do_brightnesscontrast(bNode *UNUSED(node), float *out, float *in, float *in_brightness, float *in_contrast)
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{
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        float i;
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        int c;
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        float a, b, v;
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        float brightness = (*in_brightness) / 100.0f;
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        float contrast = *in_contrast;
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        float delta = contrast / 200.0f;
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        a = 1.0f - delta * 2.0f;
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        /*
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        * The algorithm is by Werner D. Streidt
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        * (http://visca.com/ffactory/archives/5-99/msg00021.html)
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        * Extracted of OpenCV demhist.c
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        */
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        if (contrast > 0) {
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                a = 1.0f / a;
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                b = a * (brightness - delta);
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        }
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        else {
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                delta *= -1;
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                b = a * (brightness + delta);
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        }
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        for (c=0; c<3; c++) {        
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                i = in[c];
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                v = a*i + b;
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                out[c] = v;
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        }
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}
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static void node_composit_exec_brightcontrast(void *UNUSED(data), bNode *node, bNodeStack **in, bNodeStack **out)
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{
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        if (out[0]->hasoutput==0)
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                return;
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        if (in[0]->data) {
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                CompBuf *stackbuf, *cbuf= typecheck_compbuf(in[0]->data, CB_RGBA);
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                stackbuf= dupalloc_compbuf(cbuf);
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                composit3_pixel_processor(node, stackbuf, in[0]->data, in[0]->vec, in[1]->data, in[1]->vec, in[2]->data, in[2]->vec, do_brightnesscontrast, CB_RGBA, CB_VAL, CB_VAL);
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                out[0]->data = stackbuf;
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                if (cbuf != in[0]->data)
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                        free_compbuf(cbuf);
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        }
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}
 
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static bNodeSocketTemplate cmp_node_brightcontrast_in[] = {
 
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        {       SOCK_RGBA, 1, N_("Image"),                      1.0f, 1.0f, 1.0f, 1.0f},
 
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        {       SOCK_FLOAT, 1, N_("Bright"),            0.0f, 0.0f, 0.0f, 0.0f, -100.0f, 100.0f, PROP_NONE},
 
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        {       SOCK_FLOAT, 1, N_("Contrast"),          0.0f, 0.0f, 0.0f, 0.0f, -100.0f, 100.0f, PROP_NONE},
 
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        {       -1, 0, ""       }
 
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};
 
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static bNodeSocketTemplate cmp_node_brightcontrast_out[] = {
 
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        {       SOCK_RGBA, 0, N_("Image")},
 
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        {       -1, 0, ""       }
 
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};
 
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void register_node_type_cmp_brightcontrast(bNodeTreeType *ttype)
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{
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        node_type_base(ttype, &ntype, CMP_NODE_BRIGHTCONTRAST, "Bright/Contrast", NODE_CLASS_OP_COLOR, NODE_OPTIONS);
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        node_type_socket_templates(&ntype, cmp_node_brightcontrast_in, cmp_node_brightcontrast_out);
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        node_type_size(&ntype, 140, 100, 320);
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        node_type_exec(&ntype, node_composit_exec_brightcontrast);
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        nodeRegisterType(ttype, &ntype);
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}