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-rw-r--r--media/libaom/src/aom_dsp/x86/fft_sse2.c166
1 files changed, 166 insertions, 0 deletions
diff --git a/media/libaom/src/aom_dsp/x86/fft_sse2.c b/media/libaom/src/aom_dsp/x86/fft_sse2.c
new file mode 100644
index 000000000..12bdc3e18
--- /dev/null
+++ b/media/libaom/src/aom_dsp/x86/fft_sse2.c
@@ -0,0 +1,166 @@
+/*
+ * 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
+s * PATENTS file, you can obtain it at www.aomedia.org/license/patent.
+ */
+
+#include <xmmintrin.h>
+
+#include "aom_dsp/aom_dsp_common.h"
+#include "aom_dsp/fft_common.h"
+
+static INLINE void transpose4x4(const float *A, float *B, const int lda,
+ const int ldb) {
+ __m128 row1 = _mm_load_ps(&A[0 * lda]);
+ __m128 row2 = _mm_load_ps(&A[1 * lda]);
+ __m128 row3 = _mm_load_ps(&A[2 * lda]);
+ __m128 row4 = _mm_load_ps(&A[3 * lda]);
+ _MM_TRANSPOSE4_PS(row1, row2, row3, row4);
+ _mm_store_ps(&B[0 * ldb], row1);
+ _mm_store_ps(&B[1 * ldb], row2);
+ _mm_store_ps(&B[2 * ldb], row3);
+ _mm_store_ps(&B[3 * ldb], row4);
+}
+
+void aom_transpose_float_sse2(const float *A, float *B, int n) {
+ for (int y = 0; y < n; y += 4) {
+ for (int x = 0; x < n; x += 4) {
+ transpose4x4(A + y * n + x, B + x * n + y, n, n);
+ }
+ }
+}
+
+void aom_fft_unpack_2d_output_sse2(const float *packed, float *output, int n) {
+ const int n2 = n / 2;
+ output[0] = packed[0];
+ output[1] = 0;
+ output[2 * (n2 * n)] = packed[n2 * n];
+ output[2 * (n2 * n) + 1] = 0;
+
+ output[2 * n2] = packed[n2];
+ output[2 * n2 + 1] = 0;
+ output[2 * (n2 * n + n2)] = packed[n2 * n + n2];
+ output[2 * (n2 * n + n2) + 1] = 0;
+
+ for (int c = 1; c < n2; ++c) {
+ output[2 * (0 * n + c)] = packed[c];
+ output[2 * (0 * n + c) + 1] = packed[c + n2];
+ output[2 * (n2 * n + c) + 0] = packed[n2 * n + c];
+ output[2 * (n2 * n + c) + 1] = packed[n2 * n + c + n2];
+ }
+ for (int r = 1; r < n2; ++r) {
+ output[2 * (r * n + 0)] = packed[r * n];
+ output[2 * (r * n + 0) + 1] = packed[(r + n2) * n];
+ output[2 * (r * n + n2) + 0] = packed[r * n + n2];
+ output[2 * (r * n + n2) + 1] = packed[(r + n2) * n + n2];
+
+ for (int c = 1; c < AOMMIN(n2, 4); ++c) {
+ output[2 * (r * n + c)] =
+ packed[r * n + c] - packed[(r + n2) * n + c + n2];
+ output[2 * (r * n + c) + 1] =
+ packed[(r + n2) * n + c] + packed[r * n + c + n2];
+ }
+
+ for (int c = 4; c < n2; c += 4) {
+ __m128 real1 = _mm_load_ps(packed + r * n + c);
+ __m128 real2 = _mm_load_ps(packed + (r + n2) * n + c + n2);
+ __m128 imag1 = _mm_load_ps(packed + (r + n2) * n + c);
+ __m128 imag2 = _mm_load_ps(packed + r * n + c + n2);
+ real1 = _mm_sub_ps(real1, real2);
+ imag1 = _mm_add_ps(imag1, imag2);
+ _mm_store_ps(output + 2 * (r * n + c), _mm_unpacklo_ps(real1, imag1));
+ _mm_store_ps(output + 2 * (r * n + c + 2), _mm_unpackhi_ps(real1, imag1));
+ }
+
+ int r2 = r + n2;
+ int r3 = n - r2;
+ output[2 * (r2 * n + 0)] = packed[r3 * n];
+ output[2 * (r2 * n + 0) + 1] = -packed[(r3 + n2) * n];
+ output[2 * (r2 * n + n2)] = packed[r3 * n + n2];
+ output[2 * (r2 * n + n2) + 1] = -packed[(r3 + n2) * n + n2];
+ for (int c = 1; c < AOMMIN(4, n2); ++c) {
+ output[2 * (r2 * n + c)] =
+ packed[r3 * n + c] + packed[(r3 + n2) * n + c + n2];
+ output[2 * (r2 * n + c) + 1] =
+ -packed[(r3 + n2) * n + c] + packed[r3 * n + c + n2];
+ }
+ for (int c = 4; c < n2; c += 4) {
+ __m128 real1 = _mm_load_ps(packed + r3 * n + c);
+ __m128 real2 = _mm_load_ps(packed + (r3 + n2) * n + c + n2);
+ __m128 imag1 = _mm_load_ps(packed + (r3 + n2) * n + c);
+ __m128 imag2 = _mm_load_ps(packed + r3 * n + c + n2);
+ real1 = _mm_add_ps(real1, real2);
+ imag1 = _mm_sub_ps(imag2, imag1);
+ _mm_store_ps(output + 2 * (r2 * n + c), _mm_unpacklo_ps(real1, imag1));
+ _mm_store_ps(output + 2 * (r2 * n + c + 2),
+ _mm_unpackhi_ps(real1, imag1));
+ }
+ }
+}
+
+// Generate definitions for 1d transforms using float and __mm128
+GEN_FFT_4(static INLINE void, sse2, float, __m128, _mm_load_ps, _mm_store_ps,
+ _mm_set1_ps, _mm_add_ps, _mm_sub_ps);
+GEN_FFT_8(static INLINE void, sse2, float, __m128, _mm_load_ps, _mm_store_ps,
+ _mm_set1_ps, _mm_add_ps, _mm_sub_ps, _mm_mul_ps);
+GEN_FFT_16(static INLINE void, sse2, float, __m128, _mm_load_ps, _mm_store_ps,
+ _mm_set1_ps, _mm_add_ps, _mm_sub_ps, _mm_mul_ps);
+GEN_FFT_32(static INLINE void, sse2, float, __m128, _mm_load_ps, _mm_store_ps,
+ _mm_set1_ps, _mm_add_ps, _mm_sub_ps, _mm_mul_ps);
+
+void aom_fft4x4_float_sse2(const float *input, float *temp, float *output) {
+ aom_fft_2d_gen(input, temp, output, 4, aom_fft1d_4_sse2,
+ aom_transpose_float_sse2, aom_fft_unpack_2d_output_sse2, 4);
+}
+
+void aom_fft8x8_float_sse2(const float *input, float *temp, float *output) {
+ aom_fft_2d_gen(input, temp, output, 8, aom_fft1d_8_sse2,
+ aom_transpose_float_sse2, aom_fft_unpack_2d_output_sse2, 4);
+}
+
+void aom_fft16x16_float_sse2(const float *input, float *temp, float *output) {
+ aom_fft_2d_gen(input, temp, output, 16, aom_fft1d_16_sse2,
+ aom_transpose_float_sse2, aom_fft_unpack_2d_output_sse2, 4);
+}
+
+void aom_fft32x32_float_sse2(const float *input, float *temp, float *output) {
+ aom_fft_2d_gen(input, temp, output, 32, aom_fft1d_32_sse2,
+ aom_transpose_float_sse2, aom_fft_unpack_2d_output_sse2, 4);
+}
+
+// Generate definitions for 1d inverse transforms using float and mm128
+GEN_IFFT_4(static INLINE void, sse2, float, __m128, _mm_load_ps, _mm_store_ps,
+ _mm_set1_ps, _mm_add_ps, _mm_sub_ps);
+GEN_IFFT_8(static INLINE void, sse2, float, __m128, _mm_load_ps, _mm_store_ps,
+ _mm_set1_ps, _mm_add_ps, _mm_sub_ps, _mm_mul_ps);
+GEN_IFFT_16(static INLINE void, sse2, float, __m128, _mm_load_ps, _mm_store_ps,
+ _mm_set1_ps, _mm_add_ps, _mm_sub_ps, _mm_mul_ps);
+GEN_IFFT_32(static INLINE void, sse2, float, __m128, _mm_load_ps, _mm_store_ps,
+ _mm_set1_ps, _mm_add_ps, _mm_sub_ps, _mm_mul_ps);
+
+void aom_ifft4x4_float_sse2(const float *input, float *temp, float *output) {
+ aom_ifft_2d_gen(input, temp, output, 4, aom_fft1d_4_float, aom_fft1d_4_sse2,
+ aom_ifft1d_4_sse2, aom_transpose_float_sse2, 4);
+}
+
+void aom_ifft8x8_float_sse2(const float *input, float *temp, float *output) {
+ aom_ifft_2d_gen(input, temp, output, 8, aom_fft1d_8_float, aom_fft1d_8_sse2,
+ aom_ifft1d_8_sse2, aom_transpose_float_sse2, 4);
+}
+
+void aom_ifft16x16_float_sse2(const float *input, float *temp, float *output) {
+ aom_ifft_2d_gen(input, temp, output, 16, aom_fft1d_16_float,
+ aom_fft1d_16_sse2, aom_ifft1d_16_sse2,
+ aom_transpose_float_sse2, 4);
+}
+
+void aom_ifft32x32_float_sse2(const float *input, float *temp, float *output) {
+ aom_ifft_2d_gen(input, temp, output, 32, aom_fft1d_32_float,
+ aom_fft1d_32_sse2, aom_ifft1d_32_sse2,
+ aom_transpose_float_sse2, 4);
+}