| /* |
| * 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 <arm_neon.h> |
| |
| #include "./vpx_dsp_rtcd.h" |
| #include "vpx/vpx_integer.h" |
| |
| void vpx_convolve_copy_neon(const uint8_t *src, ptrdiff_t src_stride, |
| uint8_t *dst, ptrdiff_t dst_stride, |
| const InterpKernel *filter, int x0_q4, |
| int x_step_q4, int y0_q4, int y_step_q4, int w, |
| int h) { |
| (void)filter; |
| (void)x0_q4; |
| (void)x_step_q4; |
| (void)y0_q4; |
| (void)y_step_q4; |
| |
| if (w < 8) { // copy4 |
| do { |
| *(uint32_t *)dst = *(const uint32_t *)src; |
| src += src_stride; |
| dst += dst_stride; |
| *(uint32_t *)dst = *(const uint32_t *)src; |
| src += src_stride; |
| dst += dst_stride; |
| h -= 2; |
| } while (h > 0); |
| } else if (w == 8) { // copy8 |
| uint8x8_t s0, s1; |
| do { |
| s0 = vld1_u8(src); |
| src += src_stride; |
| s1 = vld1_u8(src); |
| src += src_stride; |
| |
| vst1_u8(dst, s0); |
| dst += dst_stride; |
| vst1_u8(dst, s1); |
| dst += dst_stride; |
| h -= 2; |
| } while (h > 0); |
| } else if (w < 32) { // copy16 |
| uint8x16_t s0, s1; |
| do { |
| s0 = vld1q_u8(src); |
| src += src_stride; |
| s1 = vld1q_u8(src); |
| src += src_stride; |
| |
| vst1q_u8(dst, s0); |
| dst += dst_stride; |
| vst1q_u8(dst, s1); |
| dst += dst_stride; |
| h -= 2; |
| } while (h > 0); |
| } else if (w == 32) { // copy32 |
| uint8x16_t s0, s1, s2, s3; |
| do { |
| s0 = vld1q_u8(src); |
| s1 = vld1q_u8(src + 16); |
| src += src_stride; |
| s2 = vld1q_u8(src); |
| s3 = vld1q_u8(src + 16); |
| src += src_stride; |
| |
| vst1q_u8(dst, s0); |
| vst1q_u8(dst + 16, s1); |
| dst += dst_stride; |
| vst1q_u8(dst, s2); |
| vst1q_u8(dst + 16, s3); |
| dst += dst_stride; |
| h -= 2; |
| } while (h > 0); |
| } else { // copy64 |
| uint8x16_t s0, s1, s2, s3; |
| do { |
| s0 = vld1q_u8(src); |
| s1 = vld1q_u8(src + 16); |
| s2 = vld1q_u8(src + 32); |
| s3 = vld1q_u8(src + 48); |
| src += src_stride; |
| |
| vst1q_u8(dst, s0); |
| vst1q_u8(dst + 16, s1); |
| vst1q_u8(dst + 32, s2); |
| vst1q_u8(dst + 48, s3); |
| dst += dst_stride; |
| } while (--h); |
| } |
| } |