Libav
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 Libav.
5  *
6  * Libav 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  * Libav 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 Libav; 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, uint8_t *src,
30  uint16_t *dc, int thresh,
31  const uint16_t *dithers);
32 
33 void ff_gradfun_filter_line_ssse3(intptr_t x, uint8_t *dst, uint8_t *src,
34  uint16_t *dc, int thresh,
35  const uint16_t *dithers);
36 
37 void ff_gradfun_blur_line_movdqa_sse2(intptr_t x, uint16_t *buf,
38  uint16_t *buf1, uint16_t *dc,
39  uint8_t *src1, uint8_t *src2);
40 void ff_gradfun_blur_line_movdqu_sse2(intptr_t x, uint16_t *buf,
41  uint16_t *buf1, uint16_t *dc,
42  uint8_t *src1, uint8_t *src2);
43 
44 #if HAVE_YASM
45 static void gradfun_filter_line(uint8_t *dst, uint8_t *src, uint16_t *dc,
46  int width, int thresh, const uint16_t *dithers,
47  int alignment)
48 {
49  intptr_t x;
50  if (width & alignment) {
51  x = width & ~alignment;
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_mmxext(uint8_t *dst, uint8_t *src, uint16_t *dc,
62  int width, int thresh,
63  const uint16_t *dithers)
64 {
65  gradfun_filter_line(dst, src, dc, width, thresh, dithers, 3);
66 }
67 
68 static void gradfun_filter_line_ssse3(uint8_t *dst, uint8_t *src, uint16_t *dc,
69  int width, int thresh,
70  const uint16_t *dithers)
71 {
72  gradfun_filter_line(dst, src, dc, width, thresh, dithers, 7);
73 }
74 
75 static void gradfun_blur_line_sse2(uint16_t *dc, uint16_t *buf, uint16_t *buf1,
76  uint8_t *src, int src_linesize, int width)
77 {
78  intptr_t x = -2 * width;
79  if (((intptr_t) src | src_linesize) & 15)
80  ff_gradfun_blur_line_movdqu_sse2(x, buf + width, buf1 + width,
81  dc + width, src + width * 2,
82  src + width * 2 + src_linesize);
83  else
84  ff_gradfun_blur_line_movdqa_sse2(x, buf + width, buf1 + width,
85  dc + width, src + width * 2,
86  src + width * 2 + src_linesize);
87 }
88 #endif /* HAVE_YASM */
89 
91 {
92 #if HAVE_YASM
94 
95  if (EXTERNAL_MMXEXT(cpu_flags))
96  gf->filter_line = gradfun_filter_line_mmxext;
97  if (EXTERNAL_SSSE3(cpu_flags))
98  gf->filter_line = gradfun_filter_line_ssse3;
99 
100  if (EXTERNAL_SSE2(cpu_flags))
101  gf->blur_line = gradfun_blur_line_sse2;
102 #endif /* HAVE_YASM */
103 }