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#include <assert.h>
#include <vector>
#include "blur_effect.h"
#include "effect_chain.h"
#include "mix_effect.h"
#include "unsharp_mask_effect.h"
#include "util.h"
using namespace std;
namespace movit {
UnsharpMaskEffect::UnsharpMaskEffect()
: blur(new BlurEffect),
mix(new MixEffect)
{
CHECK(mix->set_float("strength_first", 1.0f));
CHECK(mix->set_float("strength_second", -0.3f));
}
void UnsharpMaskEffect::rewrite_graph(EffectChain *graph, Node *self)
{
assert(self->incoming_links.size() == 1);
Node *input = self->incoming_links[0];
Node *blur_node = graph->add_node(blur);
Node *mix_node = graph->add_node(mix);
graph->replace_receiver(self, mix_node);
graph->connect_nodes(input, blur_node);
graph->connect_nodes(blur_node, mix_node);
graph->replace_sender(self, mix_node);
self->disabled = true;
}
bool UnsharpMaskEffect::set_float(const string &key, float value) {
if (key == "amount") {
bool ok = mix->set_float("strength_first", 1.0f + value);
return ok && mix->set_float("strength_second", -value);
}
return blur->set_float(key, value);
}
} // namespace movit
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