Move dead submodules in-tree

Signed-off-by: swurl <swurl@swurl.xyz>

externals/oboe/src/flowgraph/MonoToMultiConverter.h

@@ -0,0 +1,49 @@
+/*
+ * Copyright 2015 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FLOWGRAPH_MONO_TO_MULTI_CONVERTER_H
+#define FLOWGRAPH_MONO_TO_MULTI_CONVERTER_H
+
+#include <unistd.h>
+#include <sys/types.h>
+
+#include "FlowGraphNode.h"
+
+namespace FLOWGRAPH_OUTER_NAMESPACE::flowgraph {
+
+/**
+ * Convert a monophonic stream to a multi-channel interleaved stream
+ * with the same signal on each channel.
+ */
+class MonoToMultiConverter : public FlowGraphNode {
+public:
+    explicit MonoToMultiConverter(int32_t outputChannelCount);
+
+    virtual ~MonoToMultiConverter() = default;
+
+    int32_t onProcess(int32_t numFrames) override;
+
+    const char *getName() override {
+        return "MonoToMultiConverter";
+    }
+
+    FlowGraphPortFloatInput input;
+    FlowGraphPortFloatOutput output;
+};
+
+} /* namespace FLOWGRAPH_OUTER_NAMESPACE::flowgraph */
+
+#endif //FLOWGRAPH_MONO_TO_MULTI_CONVERTER_H