| /* |
| * Copyright (c) 2019, Alliance for Open Media. All Rights Reserved. |
| * |
| * Use of this source code is governed by a BSD-style license |
| * that can be found in the LICENSE file in the root of the source |
| * tree. An additional intellectual property rights grant can be found |
| * in the file PATENTS. All contributing project authors may |
| * be found in the AUTHORS file in the root of the source tree. |
| */ |
| |
| #include <arm_neon.h> |
| |
| #include "config/aom_dsp_rtcd.h" |
| #include "aom/aom_integer.h" |
| #include "av1/common/arm/mem_neon.h" |
| #include "av1/common/arm/transpose_neon.h" |
| |
| static void hadamard8x8_one_pass(int16x8_t *a0, int16x8_t *a1, int16x8_t *a2, |
| int16x8_t *a3, int16x8_t *a4, int16x8_t *a5, |
| int16x8_t *a6, int16x8_t *a7) { |
| const int16x8_t b0 = vaddq_s16(*a0, *a1); |
| const int16x8_t b1 = vsubq_s16(*a0, *a1); |
| const int16x8_t b2 = vaddq_s16(*a2, *a3); |
| const int16x8_t b3 = vsubq_s16(*a2, *a3); |
| const int16x8_t b4 = vaddq_s16(*a4, *a5); |
| const int16x8_t b5 = vsubq_s16(*a4, *a5); |
| const int16x8_t b6 = vaddq_s16(*a6, *a7); |
| const int16x8_t b7 = vsubq_s16(*a6, *a7); |
| |
| const int16x8_t c0 = vaddq_s16(b0, b2); |
| const int16x8_t c1 = vaddq_s16(b1, b3); |
| const int16x8_t c2 = vsubq_s16(b0, b2); |
| const int16x8_t c3 = vsubq_s16(b1, b3); |
| const int16x8_t c4 = vaddq_s16(b4, b6); |
| const int16x8_t c5 = vaddq_s16(b5, b7); |
| const int16x8_t c6 = vsubq_s16(b4, b6); |
| const int16x8_t c7 = vsubq_s16(b5, b7); |
| |
| *a0 = vaddq_s16(c0, c4); |
| *a1 = vsubq_s16(c2, c6); |
| *a2 = vsubq_s16(c0, c4); |
| *a3 = vaddq_s16(c2, c6); |
| *a4 = vaddq_s16(c3, c7); |
| *a5 = vsubq_s16(c3, c7); |
| *a6 = vsubq_s16(c1, c5); |
| *a7 = vaddq_s16(c1, c5); |
| } |
| |
| void aom_hadamard_8x8_neon(const int16_t *src_diff, ptrdiff_t src_stride, |
| tran_low_t *coeff) { |
| int16x8_t a0 = vld1q_s16(src_diff); |
| int16x8_t a1 = vld1q_s16(src_diff + src_stride); |
| int16x8_t a2 = vld1q_s16(src_diff + 2 * src_stride); |
| int16x8_t a3 = vld1q_s16(src_diff + 3 * src_stride); |
| int16x8_t a4 = vld1q_s16(src_diff + 4 * src_stride); |
| int16x8_t a5 = vld1q_s16(src_diff + 5 * src_stride); |
| int16x8_t a6 = vld1q_s16(src_diff + 6 * src_stride); |
| int16x8_t a7 = vld1q_s16(src_diff + 7 * src_stride); |
| |
| hadamard8x8_one_pass(&a0, &a1, &a2, &a3, &a4, &a5, &a6, &a7); |
| |
| transpose_s16_8x8(&a0, &a1, &a2, &a3, &a4, &a5, &a6, &a7); |
| |
| hadamard8x8_one_pass(&a0, &a1, &a2, &a3, &a4, &a5, &a6, &a7); |
| |
| // Skip the second transpose because it is not required. |
| |
| store_s16q_to_tran_low(coeff + 0, a0); |
| store_s16q_to_tran_low(coeff + 8, a1); |
| store_s16q_to_tran_low(coeff + 16, a2); |
| store_s16q_to_tran_low(coeff + 24, a3); |
| store_s16q_to_tran_low(coeff + 32, a4); |
| store_s16q_to_tran_low(coeff + 40, a5); |
| store_s16q_to_tran_low(coeff + 48, a6); |
| store_s16q_to_tran_low(coeff + 56, a7); |
| } |
| |
| void aom_hadamard_16x16_neon(const int16_t *src_diff, ptrdiff_t src_stride, |
| tran_low_t *coeff) { |
| /* Rearrange 16x16 to 8x32 and remove stride. |
| * Top left first. */ |
| aom_hadamard_8x8_neon(src_diff + 0 + 0 * src_stride, src_stride, coeff + 0); |
| /* Top right. */ |
| aom_hadamard_8x8_neon(src_diff + 8 + 0 * src_stride, src_stride, coeff + 64); |
| /* Bottom left. */ |
| aom_hadamard_8x8_neon(src_diff + 0 + 8 * src_stride, src_stride, coeff + 128); |
| /* Bottom right. */ |
| aom_hadamard_8x8_neon(src_diff + 8 + 8 * src_stride, src_stride, coeff + 192); |
| |
| for (int i = 0; i < 64; i += 8) { |
| const int16x8_t a0 = load_tran_low_to_s16q(coeff + 0); |
| const int16x8_t a1 = load_tran_low_to_s16q(coeff + 64); |
| const int16x8_t a2 = load_tran_low_to_s16q(coeff + 128); |
| const int16x8_t a3 = load_tran_low_to_s16q(coeff + 192); |
| |
| const int16x8_t b0 = vhaddq_s16(a0, a1); |
| const int16x8_t b1 = vhsubq_s16(a0, a1); |
| const int16x8_t b2 = vhaddq_s16(a2, a3); |
| const int16x8_t b3 = vhsubq_s16(a2, a3); |
| |
| const int16x8_t c0 = vaddq_s16(b0, b2); |
| const int16x8_t c1 = vaddq_s16(b1, b3); |
| const int16x8_t c2 = vsubq_s16(b0, b2); |
| const int16x8_t c3 = vsubq_s16(b1, b3); |
| |
| store_s16q_to_tran_low(coeff + 0, c0); |
| store_s16q_to_tran_low(coeff + 64, c1); |
| store_s16q_to_tran_low(coeff + 128, c2); |
| store_s16q_to_tran_low(coeff + 192, c3); |
| |
| coeff += 8; |
| } |
| } |