first commit

source/decompiled/de/maxhenkel/voicechat/concentus/OpusMultistream.java

@@ -0,0 +1,60 @@
+/*
+ * Decompiled with CFR 0.152.
+ */
+package de.maxhenkel.voicechat.concentus;
+
+import de.maxhenkel.voicechat.concentus.ChannelLayout;
+
+class OpusMultistream {
+    OpusMultistream() {
+    }
+
+    static int validate_layout(ChannelLayout layout) {
+        int max_channel = layout.nb_streams + layout.nb_coupled_streams;
+        if (max_channel > 255) {
+            return 0;
+        }
+        for (int i = 0; i < layout.nb_channels; ++i) {
+            if (layout.mapping[i] < max_channel || layout.mapping[i] == 255) continue;
+            return 0;
+        }
+        return 1;
+    }
+
+    static int get_left_channel(ChannelLayout layout, int stream_id, int prev) {
+        int i;
+        int n = i = prev < 0 ? 0 : prev + 1;
+        while (i < layout.nb_channels) {
+            if (layout.mapping[i] == stream_id * 2) {
+                return i;
+            }
+            ++i;
+        }
+        return -1;
+    }
+
+    static int get_right_channel(ChannelLayout layout, int stream_id, int prev) {
+        int i;
+        int n = i = prev < 0 ? 0 : prev + 1;
+        while (i < layout.nb_channels) {
+            if (layout.mapping[i] == stream_id * 2 + 1) {
+                return i;
+            }
+            ++i;
+        }
+        return -1;
+    }
+
+    static int get_mono_channel(ChannelLayout layout, int stream_id, int prev) {
+        int i;
+        int n = i = prev < 0 ? 0 : prev + 1;
+        while (i < layout.nb_channels) {
+            if (layout.mapping[i] == stream_id + layout.nb_coupled_streams) {
+                return i;
+            }
+            ++i;
+        }
+        return -1;
+    }
+}
+