Add openmax dl routines for review. MUST NOT BE LANDED

third_party/openmax_dl/dl/sp/src/omxSP_FFTGetBufSize_R_F32.c

+/*
+ *  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.
+ *
+ */
+
+#include "dl/api/armOMX.h"
+#include "dl/api/omxtypes.h"
+#include "dl/sp/api/armSP.h"
+#include "dl/sp/api/omxSP.h"
+
+/**
+ * Function: omxSP_FFTGetBufSize_R_F32
+ *
+ * Description:
+ * Computes the size of the specification structure required for the length
+ * 2^order real FFT and IFFT functions.
+ *
+ * Remarks:
+ * This function is used in conjunction with the 32-bit functions
+ * <FFTFwd_RToCCS_F32_Sfs> and <FFTInv_CCSToR_F32_Sfs>.
+ *
+ * Parameters:
+ * [in]  order       base-2 logarithm of the length; valid in the range
+ *                    [1,12]. ([1,15] if BIG_FFT_TABLE is defined.)
+ * [out] pSize     pointer to the number of bytes required for the
+ *                         specification structure.
+ *
+ * Return Value:
+ * Standard omxError result. See enumeration for possible result codes.
+ *
+ */
+
+OMXResult omxSP_FFTGetBufSize_R_F32(OMX_INT order, OMX_INT *pSize) {
+  if (!pSize || (order < 1) || (order > TWIDDLE_TABLE_ORDER))
+    return OMX_Sts_BadArgErr;
+
+  /*
+   * The required size is the same as for R_S32, because the
+   * elements are the same size and because ARMsFFTSpec_R_SC32 is
+   * the same size as ARMsFFTSpec_R_FC32.
+   */
+  return omxSP_FFTGetBufSize_R_S32(order, pSize);
+}