1/*
2 *  Copyright (c) 2013 The WebRTC project authors. All Rights Reserved.
3 *
4 *  Use of this source code is governed by a BSD-style license
5 *  that can be found in the LICENSE file in the root of the source
6 *  tree. An additional intellectual property rights grant can be found
7 *  in the file PATENTS.  All contributing project authors may
8 *  be found in the AUTHORS file in the root of the source tree.
9 */
10
11#include "dl/api/arm/armOMX.h"
12#include "dl/api/omxtypes.h"
13#include "dl/sp/api/armSP.h"
14#include "dl/sp/api/omxSP.h"
15
16
17/**
18 * Function:  omxSP_FFTGetBufSize_C_FC32
19 *
20 * Description:
21 * These functions compute the size of the specification structure
22 * required for the length 2^order complex FFT and IFFT functions. The function
23 * <FFTGetBufSize_C_FC32> is used in conjunction with the 32-bit functions
24 * <FFTFwd_CToC_FC32_Sfs> and <FFTInv_CToC_FC32_Sfs>.
25 *
26 * Input Arguments:
27 *
28 *   order - base-2 logarithm of the desired block length; valid in the range
29 *            [1,12] ([1,15] if BIG_FFT_TABLE is defined.)
30 *
31 * Output Arguments:
32 *
33 *   pSize - pointer to the number of bytes required for the specification
34 *            structure
35 *
36 * Return Value:
37 *
38 *    OMX_Sts_NoErr - no error
39 *
40 *
41 */
42
43OMXResult omxSP_FFTGetBufSize_C_FC32(OMX_INT order, OMX_INT *pSize) {
44  if (!pSize || (order < 1) || (order > TWIDDLE_TABLE_ORDER))
45    return OMX_Sts_BadArgErr;
46  /*
47   * The required size is the same as for C_SC32, because the
48   * elements are the same size and because ARMsFFTSpec_SC32 is
49   * the same size as ARMsFFTSpec_FC32.
50   */
51  return omxSP_FFTGetBufSize_C_SC32(order, pSize);
52}
53