X-Git-Url: https://git.pterodactylus.net/?a=blobdiff_plain;f=src%2Fmain%2Fjava%2Fnet%2Fpterodactylus%2Fsonitus%2Fdata%2Ffilter%2FStereoSeparationFilter.java;fp=src%2Fmain%2Fjava%2Fnet%2Fpterodactylus%2Fsonitus%2Fdata%2Ffilter%2FStereoSeparationFilter.java;h=d3ec65275ee729675e8fc422e9ec103d8d65d6e7;hb=b00efe47280214fdcf0860bd87adc96278cc0918;hp=0000000000000000000000000000000000000000;hpb=bd7f4af5135a4b67164e12d31bd0904c673ab2cc;p=sonitus.git
diff --git a/src/main/java/net/pterodactylus/sonitus/data/filter/StereoSeparationFilter.java b/src/main/java/net/pterodactylus/sonitus/data/filter/StereoSeparationFilter.java
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+/*
+ * Sonitus - StereoSeparationFilter.java - Copyright © 2013 David Roden
+ *
+ * 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 3 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, see .
+ */
+
+package net.pterodactylus.sonitus.data.filter;
+
+import java.util.Arrays;
+import java.util.List;
+
+import net.pterodactylus.sonitus.data.Controller;
+import net.pterodactylus.sonitus.data.Filter;
+import net.pterodactylus.sonitus.data.controller.Knob;
+
+/**
+ * {@link Filter} implementation that can reduce the stereo width of a signal,
+ * or even reverse the channels.
+ *
+ * @author David âBombeâ Roden
+ */
+public class StereoSeparationFilter extends AudioProcessingFilter {
+
+ /** The separation knob. */
+ private final Knob separationKnob;
+
+ /** Creates a new stereo separation filter. */
+ public StereoSeparationFilter() {
+ separationKnob = new Knob("Separation", 1.0);
+ }
+
+ //
+ // CONTROLLED METHODS
+ //
+
+ @Override
+ public List> controllers() {
+ return Arrays.>asList(separationKnob);
+ }
+
+ //
+ // AUDIOPROCESSINGFILTER METHODS
+ //
+
+ @Override
+ protected int[] processSamples(int[] samples) {
+ if (samples.length == 1) {
+ return samples;
+ }
+ int[] processedSamples = new int[samples.length];
+ double a = (separationKnob.value() + 1) / 2.0;
+ processedSamples[0] = (int) (samples[0] * a + samples[1] * (1 - a));
+ processedSamples[1] = (int) (samples[1] * a + samples[0] * (1 - a));
+ return processedSamples;
+ }
+
+}