1 files changed, 25 insertions, 0 deletions
diff --git a/src/main/java/se/lublin/humla/audio/BasicClippingShortMixer.java b/src/main/java/se/lublin/humla/audio/BasicClippingShortMixer.java
new file mode 100644
index 0000000..8c17838
--- /dev/null
+++ b/src/main/java/se/lublin/humla/audio/BasicClippingShortMixer.java
@@ -0,0 +1,25 @@
+package se.lublin.humla.audio;
+
+import java.util.Collection;
+
+/**
+ * A simple mixer that downsamples source floating point PCM to shorts, clipping naively.
+ */
+public class BasicClippingShortMixer implements IAudioMixer<float[], short[]> {
+    @Override
+    public void mix(Collection<IAudioMixerSource<float[]>> sources, short[] buffer, int bufferOffset,
+                    int bufferLength) {
+        for (int i = 0; i < bufferLength; i++) {
+            float mix = 0;
+            for (IAudioMixerSource<float[]> source : sources) {
+                mix += source.getSamples()[i];
+            }
+            // Clip to [-1,1].
+            if (mix > 1)
+                mix = 1;
+            else if (mix < -1)
+                mix = -1;
+            buffer[i + bufferOffset] = (short) (mix * Short.MAX_VALUE);
+        }
+    }
+}