199b31ea5d0f4629ceddf4852f96757c9c73654artoy@google.com/* 299b31ea5d0f4629ceddf4852f96757c9c73654artoy@google.com * Copyright (c) 2013 The WebRTC project authors. All Rights Reserved. 399b31ea5d0f4629ceddf4852f96757c9c73654artoy@google.com * 499b31ea5d0f4629ceddf4852f96757c9c73654artoy@google.com * Use of this source code is governed by a BSD-style license 599b31ea5d0f4629ceddf4852f96757c9c73654artoy@google.com * that can be found in the LICENSE file in the root of the source 699b31ea5d0f4629ceddf4852f96757c9c73654artoy@google.com * tree. An additional intellectual property rights grant can be found 799b31ea5d0f4629ceddf4852f96757c9c73654artoy@google.com * in the file PATENTS. All contributing project authors may 899b31ea5d0f4629ceddf4852f96757c9c73654artoy@google.com * be found in the AUTHORS file in the root of the source tree. 999b31ea5d0f4629ceddf4852f96757c9c73654artoy@google.com * 1099b31ea5d0f4629ceddf4852f96757c9c73654artoy@google.com * This file was originally licensed as follows. It has been 1199b31ea5d0f4629ceddf4852f96757c9c73654artoy@google.com * relicensed with permission from the copyright holders. 1299b31ea5d0f4629ceddf4852f96757c9c73654artoy@google.com */ 1399b31ea5d0f4629ceddf4852f96757c9c73654artoy@google.com 1499b31ea5d0f4629ceddf4852f96757c9c73654artoy@google.com/** 1599b31ea5d0f4629ceddf4852f96757c9c73654artoy@google.com * 1699b31ea5d0f4629ceddf4852f96757c9c73654artoy@google.com * File Name: omxSP_FFTGetBufSize_R_S32.c 1799b31ea5d0f4629ceddf4852f96757c9c73654artoy@google.com * OpenMAX DL: v1.0.2 1899b31ea5d0f4629ceddf4852f96757c9c73654artoy@google.com * Last Modified Revision: 7777 1999b31ea5d0f4629ceddf4852f96757c9c73654artoy@google.com * Last Modified Date: Thu, 27 Sep 2007 2099b31ea5d0f4629ceddf4852f96757c9c73654artoy@google.com * 2199b31ea5d0f4629ceddf4852f96757c9c73654artoy@google.com * (c) Copyright 2007-2008 ARM Limited. All Rights Reserved. 2299b31ea5d0f4629ceddf4852f96757c9c73654artoy@google.com * 2399b31ea5d0f4629ceddf4852f96757c9c73654artoy@google.com * 2499b31ea5d0f4629ceddf4852f96757c9c73654artoy@google.com * Description: 2599b31ea5d0f4629ceddf4852f96757c9c73654artoy@google.com * Computes the size of the specification structure required. 2699b31ea5d0f4629ceddf4852f96757c9c73654artoy@google.com */ 2799b31ea5d0f4629ceddf4852f96757c9c73654artoy@google.com 28bdf981cb383b7ec472ee86d2fedb53937285f894rtoy@google.com#include "dl/api/arm/armOMX.h" 29048e632be7693f6198bfdd54130a0220a2ccb5abrtoy@google.com#include "dl/api/omxtypes.h" 30048e632be7693f6198bfdd54130a0220a2ccb5abrtoy@google.com#include "dl/sp/api/armSP.h" 31048e632be7693f6198bfdd54130a0220a2ccb5abrtoy@google.com#include "dl/sp/api/omxSP.h" 3299b31ea5d0f4629ceddf4852f96757c9c73654artoy@google.com 3399b31ea5d0f4629ceddf4852f96757c9c73654artoy@google.com/** 3499b31ea5d0f4629ceddf4852f96757c9c73654artoy@google.com * Function: omxSP_FFTGetBufSize_R_S32 3599b31ea5d0f4629ceddf4852f96757c9c73654artoy@google.com * 3699b31ea5d0f4629ceddf4852f96757c9c73654artoy@google.com * Description: 3799b31ea5d0f4629ceddf4852f96757c9c73654artoy@google.com * Computes the size of the specification structure required for the length 3899b31ea5d0f4629ceddf4852f96757c9c73654artoy@google.com * 2^order real FFT and IFFT functions. 3999b31ea5d0f4629ceddf4852f96757c9c73654artoy@google.com * 4099b31ea5d0f4629ceddf4852f96757c9c73654artoy@google.com * Remarks: 4199b31ea5d0f4629ceddf4852f96757c9c73654artoy@google.com * This function is used in conjunction with the 32-bit functions 4299b31ea5d0f4629ceddf4852f96757c9c73654artoy@google.com * <FFTFwd_RToCCS_S32_Sfs> and <FFTInv_CCSToR_S32_Sfs>. 4399b31ea5d0f4629ceddf4852f96757c9c73654artoy@google.com * 4499b31ea5d0f4629ceddf4852f96757c9c73654artoy@google.com * Parameters: 4599b31ea5d0f4629ceddf4852f96757c9c73654artoy@google.com * [in] order base-2 logarithm of the length; valid in the range 4699b31ea5d0f4629ceddf4852f96757c9c73654artoy@google.com * [0,12]. 4799b31ea5d0f4629ceddf4852f96757c9c73654artoy@google.com * [out] pSize pointer to the number of bytes required for the 4899b31ea5d0f4629ceddf4852f96757c9c73654artoy@google.com * specification structure. 4999b31ea5d0f4629ceddf4852f96757c9c73654artoy@google.com * 5099b31ea5d0f4629ceddf4852f96757c9c73654artoy@google.com * Return Value: 5199b31ea5d0f4629ceddf4852f96757c9c73654artoy@google.com * Standard omxError result. See enumeration for possible result codes. 5299b31ea5d0f4629ceddf4852f96757c9c73654artoy@google.com * 5399b31ea5d0f4629ceddf4852f96757c9c73654artoy@google.com */ 5499b31ea5d0f4629ceddf4852f96757c9c73654artoy@google.com 5599b31ea5d0f4629ceddf4852f96757c9c73654artoy@google.comOMXResult omxSP_FFTGetBufSize_R_S32( 5699b31ea5d0f4629ceddf4852f96757c9c73654artoy@google.com OMX_INT order, 5799b31ea5d0f4629ceddf4852f96757c9c73654artoy@google.com OMX_INT *pSize 5899b31ea5d0f4629ceddf4852f96757c9c73654artoy@google.com ) 5999b31ea5d0f4629ceddf4852f96757c9c73654artoy@google.com{ 6099b31ea5d0f4629ceddf4852f96757c9c73654artoy@google.com OMX_INT NBy2,N,twiddleSize; 6199b31ea5d0f4629ceddf4852f96757c9c73654artoy@google.com 6299b31ea5d0f4629ceddf4852f96757c9c73654artoy@google.com 6399b31ea5d0f4629ceddf4852f96757c9c73654artoy@google.com /* Check for order zero */ 6499b31ea5d0f4629ceddf4852f96757c9c73654artoy@google.com if (order == 0) 6599b31ea5d0f4629ceddf4852f96757c9c73654artoy@google.com { 6699b31ea5d0f4629ceddf4852f96757c9c73654artoy@google.com *pSize = sizeof(ARMsFFTSpec_R_SC32) 6799b31ea5d0f4629ceddf4852f96757c9c73654artoy@google.com + sizeof(OMX_S32) * (2); /* Extra size 'N' is used in FFTInv_CCSToR_S32S16_Sfs as a temporary buf */ 6899b31ea5d0f4629ceddf4852f96757c9c73654artoy@google.com 6999b31ea5d0f4629ceddf4852f96757c9c73654artoy@google.com return OMX_Sts_NoErr; 7099b31ea5d0f4629ceddf4852f96757c9c73654artoy@google.com } 7199b31ea5d0f4629ceddf4852f96757c9c73654artoy@google.com 7299b31ea5d0f4629ceddf4852f96757c9c73654artoy@google.com NBy2 = 1 << (order - 1); 7399b31ea5d0f4629ceddf4852f96757c9c73654artoy@google.com N = NBy2<<1; 7499b31ea5d0f4629ceddf4852f96757c9c73654artoy@google.com twiddleSize = 5*N/8; /* 3/4(N/2) + N/4 */ 7599b31ea5d0f4629ceddf4852f96757c9c73654artoy@google.com 7699b31ea5d0f4629ceddf4852f96757c9c73654artoy@google.com /* 2 pointers to store bitreversed array and twiddle factor array */ 7799b31ea5d0f4629ceddf4852f96757c9c73654artoy@google.com *pSize = sizeof(ARMsFFTSpec_R_SC32) 7899b31ea5d0f4629ceddf4852f96757c9c73654artoy@google.com /* Twiddle factors */ 7999b31ea5d0f4629ceddf4852f96757c9c73654artoy@google.com + sizeof(OMX_SC32) * twiddleSize 8099b31ea5d0f4629ceddf4852f96757c9c73654artoy@google.com /* Ping Pong buffer for doing the N/2 point complex FFT */ 8199b31ea5d0f4629ceddf4852f96757c9c73654artoy@google.com + sizeof(OMX_S32) * (N<<1) /* Extra size 'N' is used in FFTInv_CCSToR_S32_Sfs as a temporary buf */ 8299b31ea5d0f4629ceddf4852f96757c9c73654artoy@google.com + 62 ; /* Extra bytes to get 32 byte alignment of ptwiddle and pBuf */ 8399b31ea5d0f4629ceddf4852f96757c9c73654artoy@google.com 8499b31ea5d0f4629ceddf4852f96757c9c73654artoy@google.com 8599b31ea5d0f4629ceddf4852f96757c9c73654artoy@google.com return OMX_Sts_NoErr; 8699b31ea5d0f4629ceddf4852f96757c9c73654artoy@google.com} 8799b31ea5d0f4629ceddf4852f96757c9c73654artoy@google.com 8899b31ea5d0f4629ceddf4852f96757c9c73654artoy@google.com/***************************************************************************** 8999b31ea5d0f4629ceddf4852f96757c9c73654artoy@google.com * END OF FILE 9099b31ea5d0f4629ceddf4852f96757c9c73654artoy@google.com *****************************************************************************/ 9199b31ea5d0f4629ceddf4852f96757c9c73654artoy@google.com 92