148 lines
4 KiB
C
148 lines
4 KiB
C
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/*
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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(
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const uint8_t *src, // r0
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ptrdiff_t src_stride, // r1
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uint8_t *dst, // r2
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ptrdiff_t dst_stride, // r3
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const int16_t *filter_x,
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int filter_x_stride,
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const int16_t *filter_y,
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int filter_y_stride,
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int w,
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int h) {
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uint8_t *d;
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uint8x8_t d0u8, d1u8, d2u8, d3u8;
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uint32x2_t d0u32, d2u32;
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uint8x16_t q0u8, q1u8, q2u8, q3u8, q8u8, q9u8, q10u8, q11u8;
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(void)filter_x; (void)filter_x_stride;
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(void)filter_y; (void)filter_y_stride;
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d = dst;
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if (w > 32) { // avg64
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for (; h > 0; h -= 1) {
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q0u8 = vld1q_u8(src);
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q1u8 = vld1q_u8(src + 16);
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q2u8 = vld1q_u8(src + 32);
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q3u8 = vld1q_u8(src + 48);
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src += src_stride;
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q8u8 = vld1q_u8(d);
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q9u8 = vld1q_u8(d + 16);
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q10u8 = vld1q_u8(d + 32);
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q11u8 = vld1q_u8(d + 48);
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d += dst_stride;
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q0u8 = vrhaddq_u8(q0u8, q8u8);
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q1u8 = vrhaddq_u8(q1u8, q9u8);
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q2u8 = vrhaddq_u8(q2u8, q10u8);
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q3u8 = vrhaddq_u8(q3u8, q11u8);
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vst1q_u8(dst, q0u8);
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vst1q_u8(dst + 16, q1u8);
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vst1q_u8(dst + 32, q2u8);
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vst1q_u8(dst + 48, q3u8);
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dst += dst_stride;
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}
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} else if (w == 32) { // avg32
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for (; h > 0; h -= 2) {
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q0u8 = vld1q_u8(src);
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q1u8 = vld1q_u8(src + 16);
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src += src_stride;
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q2u8 = vld1q_u8(src);
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q3u8 = vld1q_u8(src + 16);
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src += src_stride;
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q8u8 = vld1q_u8(d);
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q9u8 = vld1q_u8(d + 16);
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d += dst_stride;
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q10u8 = vld1q_u8(d);
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q11u8 = vld1q_u8(d + 16);
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d += dst_stride;
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q0u8 = vrhaddq_u8(q0u8, q8u8);
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q1u8 = vrhaddq_u8(q1u8, q9u8);
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q2u8 = vrhaddq_u8(q2u8, q10u8);
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q3u8 = vrhaddq_u8(q3u8, q11u8);
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vst1q_u8(dst, q0u8);
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vst1q_u8(dst + 16, q1u8);
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dst += dst_stride;
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vst1q_u8(dst, q2u8);
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vst1q_u8(dst + 16, q3u8);
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dst += dst_stride;
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}
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} else if (w > 8) { // avg16
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for (; h > 0; h -= 2) {
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q0u8 = vld1q_u8(src);
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src += src_stride;
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q1u8 = vld1q_u8(src);
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src += src_stride;
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q2u8 = vld1q_u8(d);
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d += dst_stride;
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q3u8 = vld1q_u8(d);
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d += dst_stride;
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q0u8 = vrhaddq_u8(q0u8, q2u8);
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q1u8 = vrhaddq_u8(q1u8, q3u8);
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vst1q_u8(dst, q0u8);
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dst += dst_stride;
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vst1q_u8(dst, q1u8);
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dst += dst_stride;
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}
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} else if (w == 8) { // avg8
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for (; h > 0; h -= 2) {
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d0u8 = vld1_u8(src);
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src += src_stride;
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d1u8 = vld1_u8(src);
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src += src_stride;
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d2u8 = vld1_u8(d);
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d += dst_stride;
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d3u8 = vld1_u8(d);
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d += dst_stride;
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q0u8 = vcombine_u8(d0u8, d1u8);
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q1u8 = vcombine_u8(d2u8, d3u8);
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q0u8 = vrhaddq_u8(q0u8, q1u8);
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vst1_u8(dst, vget_low_u8(q0u8));
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dst += dst_stride;
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vst1_u8(dst, vget_high_u8(q0u8));
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dst += dst_stride;
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}
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} else { // avg4
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for (; h > 0; h -= 2) {
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d0u32 = vld1_lane_u32((const uint32_t *)src, d0u32, 0);
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src += src_stride;
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d0u32 = vld1_lane_u32((const uint32_t *)src, d0u32, 1);
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src += src_stride;
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d2u32 = vld1_lane_u32((const uint32_t *)d, d2u32, 0);
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d += dst_stride;
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d2u32 = vld1_lane_u32((const uint32_t *)d, d2u32, 1);
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d += dst_stride;
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d0u8 = vrhadd_u8(vreinterpret_u8_u32(d0u32),
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vreinterpret_u8_u32(d2u32));
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d0u32 = vreinterpret_u32_u8(d0u8);
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vst1_lane_u32((uint32_t *)dst, d0u32, 0);
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dst += dst_stride;
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vst1_lane_u32((uint32_t *)dst, d0u32, 1);
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dst += dst_stride;
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}
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}
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return;
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}
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