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| 1 /* |
| 2 * Copyright (c) 2014 The WebM project authors. All Rights Reserved. |
| 3 * |
| 4 * Use of this source code is governed by a BSD-style license |
| 5 * that can be found in the LICENSE file in the root of the source |
| 6 * tree. An additional intellectual property rights grant can be found |
| 7 * in the file PATENTS. All contributing project authors may |
| 8 * be found in the AUTHORS file in the root of the source tree. |
| 9 */ |
| 10 |
| 11 #include <arm_neon.h> |
| 12 #include "./vp9_rtcd.h" |
| 13 #include "./vpx_config.h" |
| 14 |
| 15 #include "vpx/vpx_integer.h" |
| 16 |
| 17 static INLINE unsigned int horizontal_long_add_16x8(const uint16x8_t vec_lo, |
| 18 const uint16x8_t vec_hi) { |
| 19 const uint32x4_t vec_l_lo = vaddl_u16(vget_low_u16(vec_lo), |
| 20 vget_high_u16(vec_lo)); |
| 21 const uint32x4_t vec_l_hi = vaddl_u16(vget_low_u16(vec_hi), |
| 22 vget_high_u16(vec_hi)); |
| 23 const uint32x4_t a = vaddq_u32(vec_l_lo, vec_l_hi); |
| 24 const uint64x2_t b = vpaddlq_u32(a); |
| 25 const uint32x2_t c = vadd_u32(vreinterpret_u32_u64(vget_low_u64(b)), |
| 26 vreinterpret_u32_u64(vget_high_u64(b))); |
| 27 return vget_lane_u32(c, 0); |
| 28 } |
| 29 static INLINE unsigned int horizontal_add_16x8(const uint16x8_t vec_lo, |
| 30 const uint16x8_t vec_hi) { |
| 31 const uint32x4_t a = vpaddlq_u16(vaddq_u16(vec_lo, vec_hi)); |
| 32 const uint64x2_t b = vpaddlq_u32(a); |
| 33 const uint32x2_t c = vadd_u32(vreinterpret_u32_u64(vget_low_u64(b)), |
| 34 vreinterpret_u32_u64(vget_high_u64(b))); |
| 35 return vget_lane_u32(c, 0); |
| 36 } |
| 37 |
| 38 unsigned int vp9_sad64x64_neon(const uint8_t *src, int src_stride, |
| 39 const uint8_t *ref, int ref_stride) { |
| 40 int i; |
| 41 uint16x8_t vec_accum_lo = vdupq_n_u16(0); |
| 42 uint16x8_t vec_accum_hi = vdupq_n_u16(0); |
| 43 for (i = 0; i < 64; ++i) { |
| 44 const uint8x16_t vec_src_00 = vld1q_u8(src); |
| 45 const uint8x16_t vec_src_16 = vld1q_u8(src + 16); |
| 46 const uint8x16_t vec_src_32 = vld1q_u8(src + 32); |
| 47 const uint8x16_t vec_src_48 = vld1q_u8(src + 48); |
| 48 const uint8x16_t vec_ref_00 = vld1q_u8(ref); |
| 49 const uint8x16_t vec_ref_16 = vld1q_u8(ref + 16); |
| 50 const uint8x16_t vec_ref_32 = vld1q_u8(ref + 32); |
| 51 const uint8x16_t vec_ref_48 = vld1q_u8(ref + 48); |
| 52 src += src_stride; |
| 53 ref += ref_stride; |
| 54 vec_accum_lo = vabal_u8(vec_accum_lo, vget_low_u8(vec_src_00), |
| 55 vget_low_u8(vec_ref_00)); |
| 56 vec_accum_hi = vabal_u8(vec_accum_hi, vget_high_u8(vec_src_00), |
| 57 vget_high_u8(vec_ref_00)); |
| 58 vec_accum_lo = vabal_u8(vec_accum_lo, vget_low_u8(vec_src_16), |
| 59 vget_low_u8(vec_ref_16)); |
| 60 vec_accum_hi = vabal_u8(vec_accum_hi, vget_high_u8(vec_src_16), |
| 61 vget_high_u8(vec_ref_16)); |
| 62 vec_accum_lo = vabal_u8(vec_accum_lo, vget_low_u8(vec_src_32), |
| 63 vget_low_u8(vec_ref_32)); |
| 64 vec_accum_hi = vabal_u8(vec_accum_hi, vget_high_u8(vec_src_32), |
| 65 vget_high_u8(vec_ref_32)); |
| 66 vec_accum_lo = vabal_u8(vec_accum_lo, vget_low_u8(vec_src_48), |
| 67 vget_low_u8(vec_ref_48)); |
| 68 vec_accum_hi = vabal_u8(vec_accum_hi, vget_high_u8(vec_src_48), |
| 69 vget_high_u8(vec_ref_48)); |
| 70 } |
| 71 return horizontal_long_add_16x8(vec_accum_lo, vec_accum_hi); |
| 72 } |
| 73 |
| 74 unsigned int vp9_sad32x32_neon(const uint8_t *src, int src_stride, |
| 75 const uint8_t *ref, int ref_stride) { |
| 76 int i; |
| 77 uint16x8_t vec_accum_lo = vdupq_n_u16(0); |
| 78 uint16x8_t vec_accum_hi = vdupq_n_u16(0); |
| 79 |
| 80 for (i = 0; i < 32; ++i) { |
| 81 const uint8x16_t vec_src_00 = vld1q_u8(src); |
| 82 const uint8x16_t vec_src_16 = vld1q_u8(src + 16); |
| 83 const uint8x16_t vec_ref_00 = vld1q_u8(ref); |
| 84 const uint8x16_t vec_ref_16 = vld1q_u8(ref + 16); |
| 85 src += src_stride; |
| 86 ref += ref_stride; |
| 87 vec_accum_lo = vabal_u8(vec_accum_lo, vget_low_u8(vec_src_00), |
| 88 vget_low_u8(vec_ref_00)); |
| 89 vec_accum_hi = vabal_u8(vec_accum_hi, vget_high_u8(vec_src_00), |
| 90 vget_high_u8(vec_ref_00)); |
| 91 vec_accum_lo = vabal_u8(vec_accum_lo, vget_low_u8(vec_src_16), |
| 92 vget_low_u8(vec_ref_16)); |
| 93 vec_accum_hi = vabal_u8(vec_accum_hi, vget_high_u8(vec_src_16), |
| 94 vget_high_u8(vec_ref_16)); |
| 95 } |
| 96 return horizontal_add_16x8(vec_accum_lo, vec_accum_hi); |
| 97 } |
| 98 |
| 99 unsigned int vp9_sad16x16_neon(const uint8_t *src, int src_stride, |
| 100 const uint8_t *ref, int ref_stride) { |
| 101 int i; |
| 102 uint16x8_t vec_accum_lo = vdupq_n_u16(0); |
| 103 uint16x8_t vec_accum_hi = vdupq_n_u16(0); |
| 104 |
| 105 for (i = 0; i < 16; ++i) { |
| 106 const uint8x16_t vec_src = vld1q_u8(src); |
| 107 const uint8x16_t vec_ref = vld1q_u8(ref); |
| 108 src += src_stride; |
| 109 ref += ref_stride; |
| 110 vec_accum_lo = vabal_u8(vec_accum_lo, vget_low_u8(vec_src), |
| 111 vget_low_u8(vec_ref)); |
| 112 vec_accum_hi = vabal_u8(vec_accum_hi, vget_high_u8(vec_src), |
| 113 vget_high_u8(vec_ref)); |
| 114 } |
| 115 return horizontal_add_16x8(vec_accum_lo, vec_accum_hi); |
| 116 } |
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