Add openmax dl routines for review. MUST NOT BE LANDED

third_party/openmax_dl/dl/sp/src/test/gensig.h

+/*
+ *  Copyright (c) 2013 The WebRTC project authors. All Rights Reserved.
+ *
+ *  Use of this source code is governed by a BSD-style license
+ *  that can be found in the LICENSE file in the root of the source
+ *  tree. An additional intellectual property rights grant can be found
+ *  in the file PATENTS.  All contributing project authors may
+ *  be found in the AUTHORS file in the root of the source tree.
+ */
+
+#ifndef WEBRTC_ARM_FFT_TEST_GENSIG_H_
+#define WEBRTC_ARM_FFT_TEST_GENSIG_H_
+
+struct ComplexFloat {
+    float Re;
+    float Im;
+};
+
+/*
+ * Returns the max allowed signal type, depending on whether the test
+ * signal is real or not
+ */
+int MaxSignalType(int real_only);
+
+/*
+ * Generate a test signal and corresponding FFT.
+ */
+void GenerateTestSignalAndFFT(struct ComplexFloat* x,
+                              struct ComplexFloat* fft,
+                              int size,
+                              int signal_type,
+                              float signal_value,
+                              int real_only);
+
+#endif