1 /*
2 * This file is part of FFmpeg.
3 *
4 * FFmpeg is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Lesser General Public
6 * License as published by the Free Software Foundation; either
7 * version 2.1 of the License, or (at your option) any later version.
8 *
9 * FFmpeg is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * Lesser General Public License for more details.
13 *
14 * You should have received a copy of the GNU Lesser General Public
15 * License along with FFmpeg; if not, write to the Free Software
16 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
17 */
18
19 #include "config.h"
20 #include "libswscale/swscale.h"
21 #include "libswscale/swscale_internal.h"
22 #include "libavutil/arm/cpu.h"
23
24 void ff_hscale_8_to_15_neon(SwsContext *c, int16_t *dst, int dstW,
25 const uint8_t *src, const int16_t *filter,
26 const int32_t *filterPos, int filterSize);
27
28 void ff_yuv2planeX_8_neon(const int16_t *filter, int filterSize,
29 const int16_t **src, uint8_t *dest, int dstW,
30 const uint8_t *dither, int offset);
31
ff_sws_init_swscale_arm(SwsContext * c)32 av_cold void ff_sws_init_swscale_arm(SwsContext *c)
33 {
34 int cpu_flags = av_get_cpu_flags();
35
36 if (have_neon(cpu_flags)) {
37 if (c->srcBpc == 8 && c->dstBpc <= 14 &&
38 (c->hLumFilterSize % 8) == 0 &&
39 (c->hChrFilterSize % 8) == 0)
40 {
41 c->hyScale = c->hcScale = ff_hscale_8_to_15_neon;
42 }
43 if (c->dstBpc == 8) {
44 c->yuv2planeX = ff_yuv2planeX_8_neon;
45 }
46 }
47 }
48