1 /****************************************************************************** 2 * * 3 * Copyright (C) 2018 The Android Open Source Project 4 * 5 * Licensed under the Apache License, Version 2.0 (the "License"); 6 * you may not use this file except in compliance with the License. 7 * You may obtain a copy of the License at: 8 * 9 * http://www.apache.org/licenses/LICENSE-2.0 10 * 11 * Unless required by applicable law or agreed to in writing, software 12 * distributed under the License is distributed on an "AS IS" BASIS, 13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 14 * See the License for the specific language governing permissions and 15 * limitations under the License. 16 * 17 ***************************************************************************** 18 * Originally developed and contributed by Ittiam Systems Pvt. Ltd, Bangalore 19 */ 20 #ifndef IXHEAACD_DSP_FFT32X32S_H 21 #define IXHEAACD_DSP_FFT32X32S_H 22 23 VOID ixheaacd_inv_dit_fft_8pt_dec(WORD32 *x, WORD32 *real, WORD32 *imag); 24 25 VOID ixheaacd_inv_dit_fft_8pt_armv7(WORD32 *x, WORD32 *real, WORD32 *imag); 26 27 VOID ixheaacd_inv_dit_fft_8pt_armv8(WORD32 *x, WORD32 *real, WORD32 *imag); 28 29 #define CPLX_MPY_FFT(re, im, a, b, c, d) \ 30 do { \ 31 re = ((a * c) - (b * d)); \ 32 im = ((a * d) + (b * c)); \ 33 } while (0) 34 35 #define CPLX_MPY_IFFT(re, im, a, b, c, d) \ 36 do { \ 37 re = ((a * c) + (b * d)); \ 38 im = (-(a * d) + (b * c)); \ 39 } while (0) 40 41 #endif /* IXHEAACD_DSP_FFT32X32S_H */ 42