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vf_gradfun_init.c
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1 /*
2  * Copyright (C) 2009 Loren Merritt <lorenm@u.washington.edu>
3  *
4  * This file is part of FFmpeg.
5  *
6  * FFmpeg is free software; you can redistribute it and/or
7  * modify it under the terms of the GNU Lesser General Public
8  * License as published by the Free Software Foundation; either
9  * version 2.1 of the License, or (at your option) any later version.
10  *
11  * FFmpeg is distributed in the hope that it will be useful,
12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14  * Lesser General Public License for more details.
15  *
16  * You should have received a copy of the GNU Lesser General Public
17  * License along with FFmpeg; if not, write to the Free Software
18  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19  */
20 
21 #include "config.h"
22 #include "libavutil/attributes.h"
23 #include "libavutil/cpu.h"
24 #include "libavutil/mem.h"
25 #include "libavutil/x86/asm.h"
26 #include "libavutil/x86/cpu.h"
27 #include "libavfilter/gradfun.h"
28 
29 void ff_gradfun_filter_line_mmxext(intptr_t x, uint8_t *dst, const uint8_t *src,
30  const uint16_t *dc, int thresh,
31  const uint16_t *dithers);
32 void ff_gradfun_filter_line_ssse3(intptr_t x, uint8_t *dst, const uint8_t *src,
33  const uint16_t *dc, int thresh,
34  const uint16_t *dithers);
35 
36 void ff_gradfun_blur_line_movdqa_sse2(intptr_t x, uint16_t *buf,
37  const uint16_t *buf1, uint16_t *dc,
38  const uint8_t *src1, const uint8_t *src2);
39 void ff_gradfun_blur_line_movdqu_sse2(intptr_t x, uint16_t *buf,
40  const uint16_t *buf1, uint16_t *dc,
41  const uint8_t *src1, const uint8_t *src2);
42 
43 #if HAVE_YASM
44 static void gradfun_filter_line_mmxext(uint8_t *dst, const uint8_t *src,
45  const uint16_t *dc,
46  int width, int thresh,
47  const uint16_t *dithers)
48 {
49  intptr_t x;
50  if (width & 3) {
51  x = width & ~3;
52  ff_gradfun_filter_line_c(dst + x, src + x, dc + x / 2,
53  width - x, thresh, dithers);
54  width = x;
55  }
56  x = -width;
57  ff_gradfun_filter_line_mmxext(x, dst + width, src + width, dc + width / 2,
58  thresh, dithers);
59 }
60 
61 static void gradfun_filter_line_ssse3(uint8_t *dst, const uint8_t *src, const uint16_t *dc,
62  int width, int thresh,
63  const uint16_t *dithers)
64 {
65  intptr_t x;
66  if (width & 7) {
67  // could be 10% faster if I somehow eliminated this
68  x = width & ~7;
69  ff_gradfun_filter_line_c(dst + x, src + x, dc + x / 2,
70  width - x, thresh, dithers);
71  width = x;
72  }
73  x = -width;
74  ff_gradfun_filter_line_ssse3(x, dst + width, src + width, dc + width / 2,
75  thresh, dithers);
76 }
77 
78 static void gradfun_blur_line_sse2(uint16_t *dc, uint16_t *buf, const uint16_t *buf1,
79  const uint8_t *src, int src_linesize, int width)
80 {
81  intptr_t x = -2 * width;
82  if (((intptr_t) src | src_linesize) & 15)
83  ff_gradfun_blur_line_movdqu_sse2(x, buf + width, buf1 + width,
84  dc + width, src + width * 2,
85  src + width * 2 + src_linesize);
86  else
87  ff_gradfun_blur_line_movdqa_sse2(x, buf + width, buf1 + width,
88  dc + width, src + width * 2,
89  src + width * 2 + src_linesize);
90 }
91 #endif /* HAVE_YASM */
92 
94 {
95 #if HAVE_YASM
97 
98  if (EXTERNAL_MMXEXT(cpu_flags))
99  gf->filter_line = gradfun_filter_line_mmxext;
100  if (EXTERNAL_SSSE3(cpu_flags))
101  gf->filter_line = gradfun_filter_line_ssse3;
102 
103  if (EXTERNAL_SSE2(cpu_flags))
104  gf->blur_line = gradfun_blur_line_sse2;
105 #endif /* HAVE_YASM */
106 }