| /* |
| * Copyright (c) 2023, 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. |
| */ |
| |
| #ifndef AOM_AOM_DSP_ARM_BLEND_NEON_H_ |
| #define AOM_AOM_DSP_ARM_BLEND_NEON_H_ |
| |
| #include <arm_neon.h> |
| |
| #include "aom_dsp/blend.h" |
| |
| static inline uint8x16_t alpha_blend_a64_u8x16(uint8x16_t m, uint8x16_t a, |
| uint8x16_t b) { |
| const uint8x16_t m_inv = vsubq_u8(vdupq_n_u8(AOM_BLEND_A64_MAX_ALPHA), m); |
| |
| uint16x8_t blend_u16_lo = vmull_u8(vget_low_u8(m), vget_low_u8(a)); |
| uint16x8_t blend_u16_hi = vmull_u8(vget_high_u8(m), vget_high_u8(a)); |
| |
| blend_u16_lo = vmlal_u8(blend_u16_lo, vget_low_u8(m_inv), vget_low_u8(b)); |
| blend_u16_hi = vmlal_u8(blend_u16_hi, vget_high_u8(m_inv), vget_high_u8(b)); |
| |
| uint8x8_t blend_u8_lo = vrshrn_n_u16(blend_u16_lo, AOM_BLEND_A64_ROUND_BITS); |
| uint8x8_t blend_u8_hi = vrshrn_n_u16(blend_u16_hi, AOM_BLEND_A64_ROUND_BITS); |
| |
| return vcombine_u8(blend_u8_lo, blend_u8_hi); |
| } |
| |
| static inline uint8x8_t alpha_blend_a64_u8x8(uint8x8_t m, uint8x8_t a, |
| uint8x8_t b) { |
| const uint8x8_t m_inv = vsub_u8(vdup_n_u8(AOM_BLEND_A64_MAX_ALPHA), m); |
| |
| uint16x8_t blend_u16 = vmull_u8(m, a); |
| |
| blend_u16 = vmlal_u8(blend_u16, m_inv, b); |
| |
| return vrshrn_n_u16(blend_u16, AOM_BLEND_A64_ROUND_BITS); |
| } |
| |
| #if CONFIG_AV1_HIGHBITDEPTH |
| static inline uint16x8_t alpha_blend_a64_u16x8(uint16x8_t m, uint16x8_t a, |
| uint16x8_t b) { |
| uint16x8_t m_inv = vsubq_u16(vdupq_n_u16(AOM_BLEND_A64_MAX_ALPHA), m); |
| |
| uint32x4_t blend_u32_lo = vmull_u16(vget_low_u16(a), vget_low_u16(m)); |
| uint32x4_t blend_u32_hi = vmull_u16(vget_high_u16(a), vget_high_u16(m)); |
| |
| blend_u32_lo = vmlal_u16(blend_u32_lo, vget_low_u16(b), vget_low_u16(m_inv)); |
| blend_u32_hi = |
| vmlal_u16(blend_u32_hi, vget_high_u16(b), vget_high_u16(m_inv)); |
| |
| uint16x4_t blend_u16_lo = |
| vrshrn_n_u32(blend_u32_lo, AOM_BLEND_A64_ROUND_BITS); |
| uint16x4_t blend_u16_hi = |
| vrshrn_n_u32(blend_u32_hi, AOM_BLEND_A64_ROUND_BITS); |
| |
| return vcombine_u16(blend_u16_lo, blend_u16_hi); |
| } |
| |
| static inline uint16x4_t alpha_blend_a64_u16x4(uint16x4_t m, uint16x4_t a, |
| uint16x4_t b) { |
| const uint16x4_t m_inv = vsub_u16(vdup_n_u16(AOM_BLEND_A64_MAX_ALPHA), m); |
| |
| uint32x4_t blend_u16 = vmull_u16(m, a); |
| |
| blend_u16 = vmlal_u16(blend_u16, m_inv, b); |
| |
| return vrshrn_n_u32(blend_u16, AOM_BLEND_A64_ROUND_BITS); |
| } |
| #endif // CONFIG_AV1_HIGHBITDEPTH |
| |
| static inline uint8x8_t avg_blend_u8x8(uint8x8_t a, uint8x8_t b) { |
| return vrhadd_u8(a, b); |
| } |
| |
| static inline uint8x16_t avg_blend_u8x16(uint8x16_t a, uint8x16_t b) { |
| return vrhaddq_u8(a, b); |
| } |
| |
| static inline uint8x8_t avg_blend_pairwise_u8x8(uint8x8_t a, uint8x8_t b) { |
| return vrshr_n_u8(vpadd_u8(a, b), 1); |
| } |
| |
| static inline uint8x16_t avg_blend_pairwise_u8x16(uint8x16_t a, uint8x16_t b) { |
| #if AOM_ARCH_AARCH64 |
| return vrshrq_n_u8(vpaddq_u8(a, b), 1); |
| #else |
| uint8x8_t sum_pairwise_a = vpadd_u8(vget_low_u8(a), vget_high_u8(a)); |
| uint8x8_t sum_pairwise_b = vpadd_u8(vget_low_u8(b), vget_high_u8(b)); |
| return vrshrq_n_u8(vcombine_u8(sum_pairwise_a, sum_pairwise_b), 1); |
| #endif // AOM_ARCH_AARCH64 |
| } |
| |
| static inline uint8x8_t avg_blend_pairwise_u8x8_4(uint8x8_t a, uint8x8_t b, |
| uint8x8_t c, uint8x8_t d) { |
| uint8x8_t a_c = vpadd_u8(a, c); |
| uint8x8_t b_d = vpadd_u8(b, d); |
| return vrshr_n_u8(vqadd_u8(a_c, b_d), 2); |
| } |
| |
| static inline uint8x16_t avg_blend_pairwise_u8x16_4(uint8x16_t a, uint8x16_t b, |
| uint8x16_t c, |
| uint8x16_t d) { |
| #if AOM_ARCH_AARCH64 |
| uint8x16_t a_c = vpaddq_u8(a, c); |
| uint8x16_t b_d = vpaddq_u8(b, d); |
| return vrshrq_n_u8(vqaddq_u8(a_c, b_d), 2); |
| #else |
| uint8x8_t sum_pairwise_a = vpadd_u8(vget_low_u8(a), vget_high_u8(a)); |
| uint8x8_t sum_pairwise_b = vpadd_u8(vget_low_u8(b), vget_high_u8(b)); |
| uint8x8_t sum_pairwise_c = vpadd_u8(vget_low_u8(c), vget_high_u8(c)); |
| uint8x8_t sum_pairwise_d = vpadd_u8(vget_low_u8(d), vget_high_u8(d)); |
| uint8x16_t a_c = vcombine_u8(sum_pairwise_a, sum_pairwise_c); |
| uint8x16_t b_d = vcombine_u8(sum_pairwise_b, sum_pairwise_d); |
| return vrshrq_n_u8(vqaddq_u8(a_c, b_d), 2); |
| #endif // AOM_ARCH_AARCH64 |
| } |
| |
| #endif // AOM_AOM_DSP_ARM_BLEND_NEON_H_ |