1da04d4f8ef493ab7bf1fbdaffe206899f03681c2rtoy@google.com/* 2da04d4f8ef493ab7bf1fbdaffe206899f03681c2rtoy@google.com * Copyright (c) 2013 The WebRTC project authors. All Rights Reserved. 3da04d4f8ef493ab7bf1fbdaffe206899f03681c2rtoy@google.com * 4da04d4f8ef493ab7bf1fbdaffe206899f03681c2rtoy@google.com * Use of this source code is governed by a BSD-style license 5da04d4f8ef493ab7bf1fbdaffe206899f03681c2rtoy@google.com * that can be found in the LICENSE file in the root of the source 6da04d4f8ef493ab7bf1fbdaffe206899f03681c2rtoy@google.com * tree. An additional intellectual property rights grant can be found 7da04d4f8ef493ab7bf1fbdaffe206899f03681c2rtoy@google.com * in the file PATENTS. All contributing project authors may 8da04d4f8ef493ab7bf1fbdaffe206899f03681c2rtoy@google.com * be found in the AUTHORS file in the root of the source tree. 9da04d4f8ef493ab7bf1fbdaffe206899f03681c2rtoy@google.com * 10da04d4f8ef493ab7bf1fbdaffe206899f03681c2rtoy@google.com */ 11da04d4f8ef493ab7bf1fbdaffe206899f03681c2rtoy@google.com 12da04d4f8ef493ab7bf1fbdaffe206899f03681c2rtoy@google.com#include "dl/api/omxtypes.h" 13da04d4f8ef493ab7bf1fbdaffe206899f03681c2rtoy@google.com 14da04d4f8ef493ab7bf1fbdaffe206899f03681c2rtoy@google.comvoid x86SP_FFT_CToC_FC32_Inv_Radix2_ms( 15da04d4f8ef493ab7bf1fbdaffe206899f03681c2rtoy@google.com const OMX_F32 *in, 16da04d4f8ef493ab7bf1fbdaffe206899f03681c2rtoy@google.com OMX_F32 *out, 17da04d4f8ef493ab7bf1fbdaffe206899f03681c2rtoy@google.com const OMX_F32 *twiddle, 18da04d4f8ef493ab7bf1fbdaffe206899f03681c2rtoy@google.com OMX_INT n, 19da04d4f8ef493ab7bf1fbdaffe206899f03681c2rtoy@google.com OMX_INT sub_size, 20da04d4f8ef493ab7bf1fbdaffe206899f03681c2rtoy@google.com OMX_INT sub_num) { 21da04d4f8ef493ab7bf1fbdaffe206899f03681c2rtoy@google.com OMX_INT grp; 22da04d4f8ef493ab7bf1fbdaffe206899f03681c2rtoy@google.com OMX_F32 *out0 = out; 23da04d4f8ef493ab7bf1fbdaffe206899f03681c2rtoy@google.com OMX_INT set_count = sub_num >> 1; 24da04d4f8ef493ab7bf1fbdaffe206899f03681c2rtoy@google.com 25da04d4f8ef493ab7bf1fbdaffe206899f03681c2rtoy@google.com for (grp = 0; grp < sub_size; ++grp) { 26da04d4f8ef493ab7bf1fbdaffe206899f03681c2rtoy@google.com OMX_INT set; 27da04d4f8ef493ab7bf1fbdaffe206899f03681c2rtoy@google.com const OMX_F32 *tw = twiddle + grp * sub_num; 28da04d4f8ef493ab7bf1fbdaffe206899f03681c2rtoy@google.com 29da04d4f8ef493ab7bf1fbdaffe206899f03681c2rtoy@google.com for (set = 0; set < set_count; ++set) { 30da04d4f8ef493ab7bf1fbdaffe206899f03681c2rtoy@google.com OMX_FC32 t; 31da04d4f8ef493ab7bf1fbdaffe206899f03681c2rtoy@google.com const OMX_F32 *in0 = in + set + grp * sub_num; 32da04d4f8ef493ab7bf1fbdaffe206899f03681c2rtoy@google.com const OMX_F32 *in1 = in0 + set_count; 33da04d4f8ef493ab7bf1fbdaffe206899f03681c2rtoy@google.com OMX_F32 *out1 = out0 + (n >> 1); 34da04d4f8ef493ab7bf1fbdaffe206899f03681c2rtoy@google.com 35da04d4f8ef493ab7bf1fbdaffe206899f03681c2rtoy@google.com // CMUL t, tw, in1 36da04d4f8ef493ab7bf1fbdaffe206899f03681c2rtoy@google.com t.Re = tw[0] * in1[0] + tw[n << 1] * in1[n]; 37da04d4f8ef493ab7bf1fbdaffe206899f03681c2rtoy@google.com t.Im = tw[0] * in1[n] - tw[n << 1] * in1[0]; 38da04d4f8ef493ab7bf1fbdaffe206899f03681c2rtoy@google.com 39da04d4f8ef493ab7bf1fbdaffe206899f03681c2rtoy@google.com // CADD out0, in0, t 40da04d4f8ef493ab7bf1fbdaffe206899f03681c2rtoy@google.com out0[0] = in0[0] + t.Re; 41da04d4f8ef493ab7bf1fbdaffe206899f03681c2rtoy@google.com out0[n] = in0[n] + t.Im; 42da04d4f8ef493ab7bf1fbdaffe206899f03681c2rtoy@google.com 43da04d4f8ef493ab7bf1fbdaffe206899f03681c2rtoy@google.com // CSUB out1, in0, t 44da04d4f8ef493ab7bf1fbdaffe206899f03681c2rtoy@google.com out1[0] = in0[0] - t.Re; 45da04d4f8ef493ab7bf1fbdaffe206899f03681c2rtoy@google.com out1[n] = in0[n] - t.Im; 46da04d4f8ef493ab7bf1fbdaffe206899f03681c2rtoy@google.com 47da04d4f8ef493ab7bf1fbdaffe206899f03681c2rtoy@google.com out0 += 1; 48da04d4f8ef493ab7bf1fbdaffe206899f03681c2rtoy@google.com } 49da04d4f8ef493ab7bf1fbdaffe206899f03681c2rtoy@google.com } 50da04d4f8ef493ab7bf1fbdaffe206899f03681c2rtoy@google.com} 51