| /* |
| * 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 "aom_dsp/arm/mem_neon.h" |
| #include "aom_dsp/arm/sum_neon.h" |
| #include "aom_dsp/arm/transpose_neon.h" |
| #include "aom_ports/mem.h" |
| |
| #if !defined(__aarch64__) |
| static INLINE uint32x2_t horizontal_add_u16x8_v(const uint16x8_t a) { |
| const uint32x4_t b = vpaddlq_u16(a); |
| const uint64x2_t c = vpaddlq_u32(b); |
| return vadd_u32(vreinterpret_u32_u64(vget_low_u64(c)), |
| vreinterpret_u32_u64(vget_high_u64(c))); |
| } |
| #endif |
| |
| unsigned int aom_avg_4x4_neon(const uint8_t *a, int a_stride) { |
| const uint8x16_t b = load_unaligned_u8q(a, a_stride); |
| const uint16x8_t c = vaddl_u8(vget_low_u8(b), vget_high_u8(b)); |
| #if defined(__aarch64__) |
| const uint32_t d = vaddlvq_u16(c); |
| return (d + 8) >> 4; |
| #else |
| const uint32x2_t d = horizontal_add_u16x8_v(c); |
| return vget_lane_u32(vrshr_n_u32(d, 4), 0); |
| #endif |
| } |
| |
| unsigned int aom_avg_8x8_neon(const uint8_t *a, int a_stride) { |
| uint16x8_t sum; |
| uint8x8_t b = vld1_u8(a); |
| a += a_stride; |
| uint8x8_t c = vld1_u8(a); |
| a += a_stride; |
| sum = vaddl_u8(b, c); |
| |
| for (int i = 0; i < 6; ++i) { |
| const uint8x8_t e = vld1_u8(a); |
| a += a_stride; |
| sum = vaddw_u8(sum, e); |
| } |
| |
| #if defined(__aarch64__) |
| const uint32_t d = vaddlvq_u16(sum); |
| return (d + 32) >> 6; |
| #else |
| const uint32x2_t d = horizontal_add_u16x8_v(sum); |
| return vget_lane_u32(vrshr_n_u32(d, 6), 0); |
| #endif |
| } |
| |
| void aom_avg_8x8_quad_neon(const uint8_t *s, int p, int x16_idx, int y16_idx, |
| int *avg) { |
| for (int k = 0; k < 4; k++) { |
| const int x8_idx = x16_idx + ((k & 1) << 3); |
| const int y8_idx = y16_idx + ((k >> 1) << 3); |
| const uint8_t *s_tmp = s + y8_idx * p + x8_idx; |
| avg[k] = aom_avg_8x8_neon(s_tmp, p); |
| } |
| } |
| |
| int aom_satd_lp_neon(const int16_t *coeff, int length) { |
| const int16x4_t zero = vdup_n_s16(0); |
| int32x4_t accum = vdupq_n_s32(0); |
| |
| do { |
| const int16x8_t src0 = vld1q_s16(coeff); |
| const int16x8_t src8 = vld1q_s16(coeff + 8); |
| accum = vabal_s16(accum, vget_low_s16(src0), zero); |
| accum = vabal_s16(accum, vget_high_s16(src0), zero); |
| accum = vabal_s16(accum, vget_low_s16(src8), zero); |
| accum = vabal_s16(accum, vget_high_s16(src8), zero); |
| length -= 16; |
| coeff += 16; |
| } while (length != 0); |
| |
| return horizontal_add_s32x4(accum); |
| } |
| |
| void aom_int_pro_row_neon(int16_t *hbuf, const uint8_t *ref, |
| const int ref_stride, const int width, |
| const int height, int norm_factor) { |
| const uint8_t *idx = ref; |
| const uint16x8_t zero = vdupq_n_u16(0); |
| const int16x8_t neg_norm_factor = vdupq_n_s16(-norm_factor); |
| |
| for (int wd = 0; wd < width; wd += 16) { |
| uint16x8_t vec0 = zero; |
| uint16x8_t vec1 = zero; |
| idx = ref + wd; |
| for (int ht = 0; ht < height; ++ht) { |
| const uint8x16_t tmp = vld1q_u8(idx); |
| idx += ref_stride; |
| vec0 = vaddw_u8(vec0, vget_low_u8(tmp)); |
| vec1 = vaddw_u8(vec1, vget_high_u8(tmp)); |
| } |
| |
| const int16x8_t result0 = |
| vshlq_s16(vreinterpretq_s16_u16(vec0), neg_norm_factor); |
| const int16x8_t result1 = |
| vshlq_s16(vreinterpretq_s16_u16(vec1), neg_norm_factor); |
| |
| vst1q_s16(hbuf + wd, result0); |
| vst1q_s16(hbuf + wd + 8, result1); |
| } |
| } |
| |
| void aom_int_pro_col_neon(int16_t *vbuf, const uint8_t *ref, |
| const int ref_stride, const int width, |
| const int height, int norm_factor) { |
| for (int ht = 0; ht < height; ++ht) { |
| uint16x8_t sum = vdupq_n_u16(0); |
| for (int wd = 0; wd < width; wd += 16) { |
| const uint8x16_t vec = vld1q_u8(ref + wd); |
| sum = vaddq_u16(sum, vpaddlq_u8(vec)); |
| } |
| |
| #if defined(__aarch64__) |
| vbuf[ht] = ((int16_t)vaddvq_u16(sum)) >> norm_factor; |
| #else |
| const uint32x4_t a = vpaddlq_u16(sum); |
| const uint64x2_t b = vpaddlq_u32(a); |
| const uint32x2_t c = vadd_u32(vreinterpret_u32_u64(vget_low_u64(b)), |
| vreinterpret_u32_u64(vget_high_u64(b))); |
| vbuf[ht] = ((int16_t)vget_lane_u32(c, 0)) >> norm_factor; |
| #endif |
| ref += ref_stride; |
| } |
| } |
| |
| // coeff: 16 bits, dynamic range [-32640, 32640]. |
| // length: value range {16, 64, 256, 1024}. |
| int aom_satd_neon(const tran_low_t *coeff, int length) { |
| const int32x4_t zero = vdupq_n_s32(0); |
| int32x4_t accum = zero; |
| do { |
| const int32x4_t src0 = vld1q_s32(&coeff[0]); |
| const int32x4_t src8 = vld1q_s32(&coeff[4]); |
| const int32x4_t src16 = vld1q_s32(&coeff[8]); |
| const int32x4_t src24 = vld1q_s32(&coeff[12]); |
| accum = vabaq_s32(accum, src0, zero); |
| accum = vabaq_s32(accum, src8, zero); |
| accum = vabaq_s32(accum, src16, zero); |
| accum = vabaq_s32(accum, src24, zero); |
| length -= 16; |
| coeff += 16; |
| } while (length != 0); |
| |
| // satd: 26 bits, dynamic range [-32640 * 1024, 32640 * 1024] |
| return horizontal_add_s32x4(accum); |
| } |
| |
| int aom_vector_var_neon(const int16_t *ref, const int16_t *src, int bwl) { |
| int32x4_t v_mean = vdupq_n_s32(0); |
| int32x4_t v_sse = v_mean; |
| int16x8_t v_ref, v_src; |
| int16x4_t v_low; |
| |
| int i, width = 4 << bwl; |
| for (i = 0; i < width; i += 8) { |
| v_ref = vld1q_s16(&ref[i]); |
| v_src = vld1q_s16(&src[i]); |
| const int16x8_t diff = vsubq_s16(v_ref, v_src); |
| // diff: dynamic range [-510, 510], 10 bits. |
| v_mean = vpadalq_s16(v_mean, diff); |
| v_low = vget_low_s16(diff); |
| v_sse = vmlal_s16(v_sse, v_low, v_low); |
| #if defined(__aarch64__) |
| v_sse = vmlal_high_s16(v_sse, diff, diff); |
| #else |
| const int16x4_t v_high = vget_high_s16(diff); |
| v_sse = vmlal_s16(v_sse, v_high, v_high); |
| #endif |
| } |
| const int mean = horizontal_add_s32x4(v_mean); |
| const int sse = horizontal_add_s32x4(v_sse); |
| const unsigned int mean_abs = mean >= 0 ? mean : -mean; |
| // (mean * mean): dynamic range 31 bits. |
| const int var = sse - ((mean_abs * mean_abs) >> (bwl + 2)); |
| return var; |
| } |
| |
| #if CONFIG_AV1_HIGHBITDEPTH |
| unsigned int aom_highbd_avg_4x4_neon(const uint8_t *s, int p) { |
| const uint16_t *src = CONVERT_TO_SHORTPTR(s); |
| const uint16x4_t r0 = vld1_u16(src); |
| src += p; |
| uint16x4_t r1, r2, r3; |
| r1 = vld1_u16(src); |
| src += p; |
| r2 = vld1_u16(src); |
| src += p; |
| r3 = vld1_u16(src); |
| const uint16x4_t s1 = vadd_u16(r0, r1); |
| const uint16x4_t s2 = vadd_u16(r2, r3); |
| const uint16x4_t s3 = vadd_u16(s1, s2); |
| #if defined(__aarch64__) |
| return (vaddv_u16(s3) + 8) >> 4; |
| #else |
| const uint16x4_t h1 = vpadd_u16(s3, s3); |
| const uint16x4_t h2 = vpadd_u16(h1, h1); |
| const uint16x4_t res = vrshr_n_u16(h2, 4); |
| return vget_lane_u16(res, 0); |
| #endif |
| } |
| #endif // CONFIG_AV1_HIGHBITDEPTH |