shithub: libvpx

ref: e436930c39acaf71fed5ca830dcac6878de95b9d
dir: /vp8/common/arm/neon/copymem_neon.c/

/*
 *  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 "./vp8_rtcd.h"

void vp8_copy_mem8x4_neon(unsigned char *src, int src_stride,
                          unsigned char *dst, int dst_stride) {
  uint8x8_t vtmp;
  int r;

  for (r = 0; r < 4; ++r) {
    vtmp = vld1_u8(src);
    vst1_u8(dst, vtmp);
    src += src_stride;
    dst += dst_stride;
  }
}

void vp8_copy_mem8x8_neon(unsigned char *src, int src_stride,
                          unsigned char *dst, int dst_stride) {
  uint8x8_t vtmp;
  int r;

  for (r = 0; r < 8; ++r) {
    vtmp = vld1_u8(src);
    vst1_u8(dst, vtmp);
    src += src_stride;
    dst += dst_stride;
  }
}

void vp8_copy_mem16x16_neon(unsigned char *src, int src_stride,
                            unsigned char *dst, int dst_stride) {
  int r;
  uint8x16_t qtmp;

  for (r = 0; r < 16; ++r) {
    qtmp = vld1q_u8(src);
    vst1q_u8(dst, qtmp);
    src += src_stride;
    dst += dst_stride;
  }
}