1 files changed, 73 insertions, 0 deletions
diff --git a/third_party/aom/aom_dsp/x86/fft_avx2.c b/third_party/aom/aom_dsp/x86/fft_avx2.c
new file mode 100644
index 000000000..54da02253
--- /dev/null
+++ b/third_party/aom/aom_dsp/x86/fft_avx2.c
@@ -0,0 +1,73 @@
+/*
+ * 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 "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(static INLINE void, avx2, float, __m256, _mm256_load_ps,
+          _mm256_store_ps, _mm256_set1_ps, _mm256_add_ps, _mm256_sub_ps,
+          _mm256_mul_ps);
+GEN_FFT_16(static INLINE void, avx2, float, __m256, _mm256_load_ps,
+           _mm256_store_ps, _mm256_set1_ps, _mm256_add_ps, _mm256_sub_ps,
+           _mm256_mul_ps);
+GEN_FFT_32(static INLINE void, avx2, float, __m256, _mm256_load_ps,
+           _mm256_store_ps, _mm256_set1_ps, _mm256_add_ps, _mm256_sub_ps,
+           _mm256_mul_ps);
+
+void aom_fft8x8_float_avx2(const float *input, float *temp, float *output) {
+  aom_fft_2d_gen(input, temp, output, 8, aom_fft1d_8_avx2,
+                 aom_transpose_float_sse2, aom_fft_unpack_2d_output_sse2, 8);
+}
+
+void aom_fft16x16_float_avx2(const float *input, float *temp, float *output) {
+  aom_fft_2d_gen(input, temp, output, 16, aom_fft1d_16_avx2,
+                 aom_transpose_float_sse2, aom_fft_unpack_2d_output_sse2, 8);
+}
+
+void aom_fft32x32_float_avx2(const float *input, float *temp, float *output) {
+  aom_fft_2d_gen(input, temp, output, 32, aom_fft1d_32_avx2,
+                 aom_transpose_float_sse2, aom_fft_unpack_2d_output_sse2, 8);
+}
+
+// Generate the 1d inverse transforms for float using _mm256
+GEN_IFFT_8(static INLINE void, avx2, float, __m256, _mm256_load_ps,
+           _mm256_store_ps, _mm256_set1_ps, _mm256_add_ps, _mm256_sub_ps,
+           _mm256_mul_ps);
+GEN_IFFT_16(static INLINE void, avx2, float, __m256, _mm256_load_ps,
+            _mm256_store_ps, _mm256_set1_ps, _mm256_add_ps, _mm256_sub_ps,
+            _mm256_mul_ps);
+GEN_IFFT_32(static INLINE void, avx2, float, __m256, _mm256_load_ps,
+            _mm256_store_ps, _mm256_set1_ps, _mm256_add_ps, _mm256_sub_ps,
+            _mm256_mul_ps);
+
+void aom_ifft8x8_float_avx2(const float *input, float *temp, float *output) {
+  aom_ifft_2d_gen(input, temp, output, 8, aom_fft1d_8_float, aom_fft1d_8_avx2,
+                  aom_ifft1d_8_avx2, aom_transpose_float_sse2, 8);
+}
+
+void aom_ifft16x16_float_avx2(const float *input, float *temp, float *output) {
+  aom_ifft_2d_gen(input, temp, output, 16, aom_fft1d_16_float,
+                  aom_fft1d_16_avx2, aom_ifft1d_16_avx2,
+                  aom_transpose_float_sse2, 8);
+}
+
+void aom_ifft32x32_float_avx2(const float *input, float *temp, float *output) {
+  aom_ifft_2d_gen(input, temp, output, 32, aom_fft1d_32_float,
+                  aom_fft1d_32_avx2, aom_ifft1d_32_avx2,
+                  aom_transpose_float_sse2, 8);
+}