1c39998e39
BUG=https://code.google.com/p/webm/issues/detail?id=1023 Change-Id: I212a1d67b23ce3b5ce08800de369b25b9e375e7d
117 lines
3.9 KiB
C
117 lines
3.9 KiB
C
/*
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* Copyright (c) 2015 The WebM project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#include <arm_neon.h>
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#include "./vp9_rtcd.h"
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#include "./vpx_config.h"
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#include "vpx/vpx_integer.h"
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static INLINE unsigned int horizontal_add_u16x8(const uint16x8_t v_16x8) {
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const uint32x4_t a = vpaddlq_u16(v_16x8);
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const uint64x2_t b = vpaddlq_u32(a);
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const uint32x2_t c = vadd_u32(vreinterpret_u32_u64(vget_low_u64(b)),
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vreinterpret_u32_u64(vget_high_u64(b)));
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return vget_lane_u32(c, 0);
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}
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unsigned int vp9_avg_8x8_neon(const uint8_t *s, int p) {
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uint8x8_t v_s0 = vld1_u8(s);
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const uint8x8_t v_s1 = vld1_u8(s + p);
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uint16x8_t v_sum = vaddl_u8(v_s0, v_s1);
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v_s0 = vld1_u8(s + 2 * p);
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v_sum = vaddw_u8(v_sum, v_s0);
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v_s0 = vld1_u8(s + 3 * p);
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v_sum = vaddw_u8(v_sum, v_s0);
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v_s0 = vld1_u8(s + 4 * p);
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v_sum = vaddw_u8(v_sum, v_s0);
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v_s0 = vld1_u8(s + 5 * p);
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v_sum = vaddw_u8(v_sum, v_s0);
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v_s0 = vld1_u8(s + 6 * p);
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v_sum = vaddw_u8(v_sum, v_s0);
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v_s0 = vld1_u8(s + 7 * p);
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v_sum = vaddw_u8(v_sum, v_s0);
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return (horizontal_add_u16x8(v_sum) + 32) >> 6;
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}
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void vp9_int_pro_row_neon(int16_t hbuf[16], uint8_t const *ref,
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const int ref_stride, const int height) {
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int i;
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uint16x8_t vec_sum_lo = vdupq_n_u16(0);
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uint16x8_t vec_sum_hi = vdupq_n_u16(0);
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const int shift_factor = ((height >> 5) + 3) * -1;
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const int16x8_t vec_shift = vdupq_n_s16(shift_factor);
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for (i = 0; i < height; i += 8) {
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const uint8x16_t vec_row1 = vld1q_u8(ref);
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const uint8x16_t vec_row2 = vld1q_u8(ref + ref_stride);
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const uint8x16_t vec_row3 = vld1q_u8(ref + ref_stride * 2);
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const uint8x16_t vec_row4 = vld1q_u8(ref + ref_stride * 3);
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const uint8x16_t vec_row5 = vld1q_u8(ref + ref_stride * 4);
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const uint8x16_t vec_row6 = vld1q_u8(ref + ref_stride * 5);
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const uint8x16_t vec_row7 = vld1q_u8(ref + ref_stride * 6);
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const uint8x16_t vec_row8 = vld1q_u8(ref + ref_stride * 7);
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vec_sum_lo = vaddw_u8(vec_sum_lo, vget_low_u8(vec_row1));
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vec_sum_hi = vaddw_u8(vec_sum_hi, vget_high_u8(vec_row1));
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vec_sum_lo = vaddw_u8(vec_sum_lo, vget_low_u8(vec_row2));
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vec_sum_hi = vaddw_u8(vec_sum_hi, vget_high_u8(vec_row2));
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vec_sum_lo = vaddw_u8(vec_sum_lo, vget_low_u8(vec_row3));
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vec_sum_hi = vaddw_u8(vec_sum_hi, vget_high_u8(vec_row3));
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vec_sum_lo = vaddw_u8(vec_sum_lo, vget_low_u8(vec_row4));
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vec_sum_hi = vaddw_u8(vec_sum_hi, vget_high_u8(vec_row4));
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vec_sum_lo = vaddw_u8(vec_sum_lo, vget_low_u8(vec_row5));
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vec_sum_hi = vaddw_u8(vec_sum_hi, vget_high_u8(vec_row5));
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vec_sum_lo = vaddw_u8(vec_sum_lo, vget_low_u8(vec_row6));
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vec_sum_hi = vaddw_u8(vec_sum_hi, vget_high_u8(vec_row6));
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vec_sum_lo = vaddw_u8(vec_sum_lo, vget_low_u8(vec_row7));
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vec_sum_hi = vaddw_u8(vec_sum_hi, vget_high_u8(vec_row7));
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vec_sum_lo = vaddw_u8(vec_sum_lo, vget_low_u8(vec_row8));
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vec_sum_hi = vaddw_u8(vec_sum_hi, vget_high_u8(vec_row8));
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ref += ref_stride * 8;
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}
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vec_sum_lo = vshlq_u16(vec_sum_lo, vec_shift);
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vec_sum_hi = vshlq_u16(vec_sum_hi, vec_shift);
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vst1q_s16(hbuf, vreinterpretq_s16_u16(vec_sum_lo));
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hbuf += 8;
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vst1q_s16(hbuf, vreinterpretq_s16_u16(vec_sum_hi));
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}
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int16_t vp9_int_pro_col_neon(uint8_t const *ref, const int width) {
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int i;
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uint16x8_t vec_sum = vdupq_n_u16(0);
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for (i = 0; i < width; i += 16) {
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const uint8x16_t vec_row = vld1q_u8(ref);
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vec_sum = vaddw_u8(vec_sum, vget_low_u8(vec_row));
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vec_sum = vaddw_u8(vec_sum, vget_high_u8(vec_row));
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ref += 16;
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}
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return horizontal_add_u16x8(vec_sum);
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}
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