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 12 #include "dl/api/arm/armOMX.h" 13 #include "dl/api/omxtypes.h" 14 #include "dl/sp/api/armSP.h" 15 #include "dl/sp/api/omxSP.h" 16 17 /** 18 * Function: omxSP_FFTGetBufSize_R_F32 19 * 20 * Description: 21 * Computes the size of the specification structure required for the length 22 * 2^order real FFT and IFFT functions. 23 * 24 * Remarks: 25 * This function is used in conjunction with the 32-bit functions 26 * <FFTFwd_RToCCS_F32_Sfs> and <FFTInv_CCSToR_F32_Sfs>. 27 * 28 * Parameters: 29 * [in] order base-2 logarithm of the length; valid in the range 30 * [1,12]. ([1,15] if BIG_FFT_TABLE is defined.) 31 * [out] pSize pointer to the number of bytes required for the 32 * specification structure. 33 * 34 * Return Value: 35 * Standard omxError result. See enumeration for possible result codes. 36 * 37 */ 38 39 OMXResult omxSP_FFTGetBufSize_R_F32(OMX_INT order, OMX_INT *pSize) { 40 if (!pSize || (order < 1) || (order > TWIDDLE_TABLE_ORDER)) 41 return OMX_Sts_BadArgErr; 42 43 /* 44 * The required size is the same as for R_S32, because the 45 * elements are the same size and because ARMsFFTSpec_R_SC32 is 46 * the same size as ARMsFFTSpec_R_FC32. 47 */ 48 return omxSP_FFTGetBufSize_R_S32(order, pSize); 49 } 50
