chromium/third_party/libaom/source/libaom/aom_dsp/x86/fft_avx2.c

/*
 * Copyright (c) 2018, Alliance for Open Media. All rights reserved.
 *
 * This source code is subject to the terms of the BSD 2 Clause License and
 * the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License
 * was not distributed with this source code in the LICENSE file, you can
 * obtain it at www.aomedia.org/license/software. If the Alliance for Open
 * Media Patent License 1.0 was not distributed with this source code in the
 * PATENTS file, you can obtain it at www.aomedia.org/license/patent.
 */

#include <immintrin.h>

#include "config/aom_dsp_rtcd.h"
#include "aom_dsp/aom_dsp_common.h"
#include "aom_dsp/fft_common.h"

extern void aom_transpose_float_sse2(const float *A, float *B, int n);
extern void aom_fft_unpack_2d_output_sse2(const float *col_fft, float *output,
                                          int n);

// Generate the 1d forward transforms for float using _mm256
GEN_FFT_8(…)
GEN_FFT_16(…)
GEN_FFT_32(…)

void aom_fft8x8_float_avx2(const float *input, float *temp, float *output) { … }

void aom_fft16x16_float_avx2(const float *input, float *temp, float *output) { … }

void aom_fft32x32_float_avx2(const float *input, float *temp, float *output) { … }

// Generate the 1d inverse transforms for float using _mm256
GEN_IFFT_8(…)
GEN_IFFT_16(…)
GEN_IFFT_32(…)

void aom_ifft8x8_float_avx2(const float *input, float *temp, float *output) { … }

void aom_ifft16x16_float_avx2(const float *input, float *temp, float *output) { … }

void aom_ifft32x32_float_avx2(const float *input, float *temp, float *output) { … }