1 /*
2  *  Copyright (c) 2018 The WebM project authors. All Rights Reserved.
3  *
4  *  Use of this source code is governed by a BSD-style license
5  *  that can be found in the LICENSE file in the root of the source
6  *  tree. An additional intellectual property rights grant can be found
7  *  in the file PATENTS.  All contributing project authors may
8  *  be found in the AUTHORS file in the root of the source tree.
9  */
10 
11 #include "./vpx_dsp_rtcd.h"
12 #include "vp9/common/vp9_filter.h"
13 #include "vpx_dsp/arm/vpx_convolve8_neon_asm.h"
14 
15 /* Type1 and Type2 functions are called depending on the position of the
16  * negative and positive coefficients in the filter. In type1, the filter kernel
17  * used is sub_pel_filters_8lp, in which only the first two and the last two
18  * coefficients are negative. In type2, the negative coefficients are 0, 2, 5 &
19  * 7.
20  */
21 
22 #define DEFINE_FILTER(dir)                                                   \
23   void vpx_convolve8_##dir##_neon(                                           \
24       const uint8_t *src, ptrdiff_t src_stride, uint8_t *dst,                \
25       ptrdiff_t dst_stride, const InterpKernel *filter, int x0_q4,           \
26       int x_step_q4, int y0_q4, int y_step_q4, int w, int h) {               \
27     if (filter == vp9_filter_kernels[1]) {                                   \
28       vpx_convolve8_##dir##_filter_type1_neon(                               \
29           src, src_stride, dst, dst_stride, filter, x0_q4, x_step_q4, y0_q4, \
30           y_step_q4, w, h);                                                  \
31     } else {                                                                 \
32       vpx_convolve8_##dir##_filter_type2_neon(                               \
33           src, src_stride, dst, dst_stride, filter, x0_q4, x_step_q4, y0_q4, \
34           y_step_q4, w, h);                                                  \
35     }                                                                        \
36   }
37 
38 DEFINE_FILTER(horiz);
39 DEFINE_FILTER(avg_horiz);
40 DEFINE_FILTER(vert);
41 DEFINE_FILTER(avg_vert);
42