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/*
* Copyright (c) 2014 The WebM project authors. All Rights Reserved.
*
* Use of this source code is governed by a BSD-style license
* that can be found in the LICENSE file in the root of the source
* tree. An additional intellectual property rights grant can be found
* in the file PATENTS. All contributing project authors may
* be found in the AUTHORS file in the root of the source tree.
*/
#include <stddef.h>
#include <arm_neon.h>
void vp9_convolve_copy_neon(
const uint8_t *src, // r0
ptrdiff_t src_stride, // r1
uint8_t *dst, // r2
ptrdiff_t dst_stride, // r3
const int16_t *filter_x,
int filter_x_stride,
const int16_t *filter_y,
int filter_y_stride,
int w,
int h) {
uint8x8_t d0u8, d2u8;
uint8x16_t q0u8, q1u8, q2u8, q3u8;
(void)filter_x; (void)filter_x_stride;
(void)filter_y; (void)filter_y_stride;
if (w > 32) { // copy64
for (; h > 0; h--) {
q0u8 = vld1q_u8(src);
q1u8 = vld1q_u8(src + 16);
q2u8 = vld1q_u8(src + 32);
q3u8 = vld1q_u8(src + 48);
src += src_stride;
vst1q_u8(dst, q0u8);
vst1q_u8(dst + 16, q1u8);
vst1q_u8(dst + 32, q2u8);
vst1q_u8(dst + 48, q3u8);
dst += dst_stride;
}
} else if (w == 32) { // copy32
for (; h > 0; h -= 2) {
q0u8 = vld1q_u8(src);
q1u8 = vld1q_u8(src + 16);
src += src_stride;
q2u8 = vld1q_u8(src);
q3u8 = vld1q_u8(src + 16);
src += src_stride;
vst1q_u8(dst, q0u8);
vst1q_u8(dst + 16, q1u8);
dst += dst_stride;
vst1q_u8(dst, q2u8);
vst1q_u8(dst + 16, q3u8);
dst += dst_stride;
}
} else if (w > 8) { // copy16
for (; h > 0; h -= 2) {
q0u8 = vld1q_u8(src);
src += src_stride;
q1u8 = vld1q_u8(src);
src += src_stride;
vst1q_u8(dst, q0u8);
dst += dst_stride;
vst1q_u8(dst, q1u8);
dst += dst_stride;
}
} else if (w == 8) { // copy8
for (; h > 0; h -= 2) {
d0u8 = vld1_u8(src);
src += src_stride;
d2u8 = vld1_u8(src);
src += src_stride;
vst1_u8(dst, d0u8);
dst += dst_stride;
vst1_u8(dst, d2u8);
dst += dst_stride;
}
} else { // copy4
for (; h > 0; h--) {
*(uint32_t *)dst = *(const uint32_t *)src;
src += src_stride;
dst += dst_stride;
}
}
return;
}
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