140 lines
3.9 KiB
C
140 lines
3.9 KiB
C
/*
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* Copyright (c) 2014 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 "./vpx_dsp_rtcd.h"
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#include "vpx/vpx_integer.h"
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void vpx_convolve_avg_neon(const uint8_t *src, ptrdiff_t src_stride,
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uint8_t *dst, ptrdiff_t dst_stride,
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const int16_t *filter_x, int filter_x_stride,
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const int16_t *filter_y, int filter_y_stride, int w,
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int h) {
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(void)filter_x;
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(void)filter_x_stride;
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(void)filter_y;
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(void)filter_y_stride;
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if (w < 8) { // avg4
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uint8x8_t s0, s1;
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uint8x8_t dd0 = vdup_n_u8(0);
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uint32x2x2_t s01;
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do {
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s0 = vld1_u8(src);
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src += src_stride;
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s1 = vld1_u8(src);
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src += src_stride;
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s01 = vzip_u32(vreinterpret_u32_u8(s0), vreinterpret_u32_u8(s1));
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dd0 = vreinterpret_u8_u32(
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vld1_lane_u32((const uint32_t *)dst, vreinterpret_u32_u8(dd0), 0));
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dd0 = vreinterpret_u8_u32(vld1_lane_u32(
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(const uint32_t *)(dst + dst_stride), vreinterpret_u32_u8(dd0), 1));
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dd0 = vrhadd_u8(vreinterpret_u8_u32(s01.val[0]), dd0);
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vst1_lane_u32((uint32_t *)dst, vreinterpret_u32_u8(dd0), 0);
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dst += dst_stride;
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vst1_lane_u32((uint32_t *)dst, vreinterpret_u32_u8(dd0), 1);
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dst += dst_stride;
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h -= 2;
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} while (h > 0);
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} else if (w == 8) { // avg8
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uint8x8_t s0, s1, d0, d1;
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uint8x16_t s01, d01;
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do {
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s0 = vld1_u8(src);
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src += src_stride;
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s1 = vld1_u8(src);
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src += src_stride;
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d0 = vld1_u8(dst);
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d1 = vld1_u8(dst + dst_stride);
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s01 = vcombine_u8(s0, s1);
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d01 = vcombine_u8(d0, d1);
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d01 = vrhaddq_u8(s01, d01);
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vst1_u8(dst, vget_low_u8(d01));
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dst += dst_stride;
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vst1_u8(dst, vget_high_u8(d01));
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dst += dst_stride;
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h -= 2;
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} while (h > 0);
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} else if (w < 32) { // avg16
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uint8x16_t s0, s1, d0, d1;
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do {
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s0 = vld1q_u8(src);
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src += src_stride;
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s1 = vld1q_u8(src);
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src += src_stride;
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d0 = vld1q_u8(dst);
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d1 = vld1q_u8(dst + dst_stride);
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d0 = vrhaddq_u8(s0, d0);
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d1 = vrhaddq_u8(s1, d1);
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vst1q_u8(dst, d0);
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dst += dst_stride;
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vst1q_u8(dst, d1);
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dst += dst_stride;
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h -= 2;
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} while (h > 0);
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} else if (w == 32) { // avg32
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uint8x16_t s0, s1, s2, s3, d0, d1, d2, d3;
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do {
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s0 = vld1q_u8(src);
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s1 = vld1q_u8(src + 16);
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src += src_stride;
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s2 = vld1q_u8(src);
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s3 = vld1q_u8(src + 16);
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src += src_stride;
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d0 = vld1q_u8(dst);
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d1 = vld1q_u8(dst + 16);
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d2 = vld1q_u8(dst + dst_stride);
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d3 = vld1q_u8(dst + dst_stride + 16);
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d0 = vrhaddq_u8(s0, d0);
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d1 = vrhaddq_u8(s1, d1);
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d2 = vrhaddq_u8(s2, d2);
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d3 = vrhaddq_u8(s3, d3);
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vst1q_u8(dst, d0);
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vst1q_u8(dst + 16, d1);
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dst += dst_stride;
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vst1q_u8(dst, d2);
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vst1q_u8(dst + 16, d3);
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dst += dst_stride;
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h -= 2;
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} while (h > 0);
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} else { // avg64
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uint8x16_t s0, s1, s2, s3, d0, d1, d2, d3;
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do {
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s0 = vld1q_u8(src);
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s1 = vld1q_u8(src + 16);
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s2 = vld1q_u8(src + 32);
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s3 = vld1q_u8(src + 48);
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src += src_stride;
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d0 = vld1q_u8(dst);
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d1 = vld1q_u8(dst + 16);
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d2 = vld1q_u8(dst + 32);
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d3 = vld1q_u8(dst + 48);
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d0 = vrhaddq_u8(s0, d0);
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d1 = vrhaddq_u8(s1, d1);
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d2 = vrhaddq_u8(s2, d2);
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d3 = vrhaddq_u8(s3, d3);
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vst1q_u8(dst, d0);
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vst1q_u8(dst + 16, d1);
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vst1q_u8(dst + 32, d2);
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vst1q_u8(dst + 48, d3);
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dst += dst_stride;
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} while (--h);
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}
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}
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