ref: c1765573149e2c0fe2acabc224c0f9085b9e7f2b
dir: /vpx_dsp/arm/vpx_convolve8_neon_asm.c/
/*
* Copyright (c) 2018 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 "./vpx_dsp_rtcd.h"
#include "vp9/common/vp9_filter.h"
#include "vpx_dsp/arm/vpx_convolve8_neon_asm.h"
/* Type1 and Type2 functions are called depending on the position of the
* negative and positive coefficients in the filter. In type1, the filter kernel
* used is sub_pel_filters_8lp, in which only the first two and the last two
* coefficients are negative. In type2, the negative coefficients are 0, 2, 5 &
* 7.
*/
#define DEFINE_FILTER(dir) \
void vpx_convolve8_##dir##_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) { \
if (filter == vp9_filter_kernels[1]) { \
vpx_convolve8_##dir##_filter_type1_neon( \
src, src_stride, dst, dst_stride, filter, x0_q4, x_step_q4, y0_q4, \
y_step_q4, w, h); \
} else { \
vpx_convolve8_##dir##_filter_type2_neon( \
src, src_stride, dst, dst_stride, filter, x0_q4, x_step_q4, y0_q4, \
y_step_q4, w, h); \
} \
}
DEFINE_FILTER(horiz);
DEFINE_FILTER(avg_horiz);
DEFINE_FILTER(vert);
DEFINE_FILTER(avg_vert);