git.sesse.net Git - movit/blob - unsharp_mask_effect.cpp

   1 #include <math.h>
   2 #include <assert.h>
   3
   4 #include "unsharp_mask_effect.h"
   5 #include "blur_effect.h"
   6 #include "mix_effect.h"
   7 #include "effect_chain.h"
   8 #include "util.h"
   9
  10 UnsharpMaskEffect::UnsharpMaskEffect()
  11         : blur(new BlurEffect),
  12           mix(new MixEffect)
  13 {
  14         CHECK(mix->set_float("strength_first", 1.0f));
  15         CHECK(mix->set_float("strength_second", -0.3f));
  16 }
  17
  18 void UnsharpMaskEffect::rewrite_graph(EffectChain *graph, Node *self)
  19 {
  20         assert(self->incoming_links.size() == 1);
  21         Node *input = self->incoming_links[0];
  22
  23         Node *blur_node = graph->add_node(blur);
  24         Node *mix_node = graph->add_node(mix);
  25         graph->replace_receiver(self, mix_node);
  26         graph->connect_nodes(input, blur_node);
  27         graph->connect_nodes(blur_node, mix_node);
  28         graph->replace_sender(self, mix_node);
  29
  30         self->disabled = true;
  31 }
  32
  33 bool UnsharpMaskEffect::set_float(const std::string &key, float value) {
  34         if (key == "amount") {
  35                 bool ok = mix->set_float("strength_first", 1.0f + value);
  36                 return ok && mix->set_float("strength_second", -value);
  37         }
  38         return blur->set_float(key, value);
  39 }