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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 #if HAVE_YASM
30 void ff_gradfun_filter_line_mmxext(intptr_t x, uint8_t *dst, const uint8_t *src,
31  const uint16_t *dc, int thresh,
32  const uint16_t *dithers);
33 static void gradfun_filter_line_mmxext(uint8_t *dst, const uint8_t *src,
34  const uint16_t *dc,
35  int width, int thresh,
36  const uint16_t *dithers)
37 {
38  intptr_t x;
39  if (width & 3) {
40  x = width & ~3;
41  ff_gradfun_filter_line_c(dst + x, src + x, dc + x / 2, width - x, thresh, dithers);
42  width = x;
43  }
44  x = -width;
45  ff_gradfun_filter_line_mmxext(x, dst + width, src + width, dc + width/2,
46  thresh, dithers);
47 }
48 
49 void ff_gradfun_filter_line_ssse3(intptr_t x, uint8_t *dst, const uint8_t *src,
50  const uint16_t *dc, int thresh,
51  const uint16_t *dithers);
52 static void gradfun_filter_line_ssse3(uint8_t *dst, const uint8_t *src, const uint16_t *dc, int width, int thresh, const uint16_t *dithers)
53 {
54  intptr_t x;
55  if (width & 7) {
56  // could be 10% faster if I somehow eliminated this
57  x = width & ~7;
58  ff_gradfun_filter_line_c(dst + x, src + x, dc + x / 2, width - x, thresh, dithers);
59  width = x;
60  }
61  x = -width;
62  ff_gradfun_filter_line_ssse3(x, dst + width, src + width, dc + width/2,
63  thresh, dithers);
64 }
65 
66 void ff_gradfun_blur_line_movdqa_sse2(intptr_t x, uint16_t *buf, const uint16_t *buf1, uint16_t *dc, const uint8_t *src1, const uint8_t *src2);
67 void ff_gradfun_blur_line_movdqu_sse2(intptr_t x, uint16_t *buf, const uint16_t *buf1, uint16_t *dc, const uint8_t *src1, const uint8_t *src2);
68 static void gradfun_blur_line_sse2(uint16_t *dc, uint16_t *buf, const uint16_t *buf1, const uint8_t *src, int src_linesize, int width)
69 {
70  intptr_t x = -2*width;
71  if (((intptr_t) src | src_linesize) & 15) {
72  ff_gradfun_blur_line_movdqu_sse2(x, buf + width, buf1 + width,
73  dc + width, src + width * 2,
74  src + width * 2 + src_linesize);
75  } else {
76  ff_gradfun_blur_line_movdqa_sse2(x, buf + width, buf1 + width,
77  dc + width, src + width * 2,
78  src + width * 2 + src_linesize);
79  }
80 }
81 #endif /* HAVE_YASM */
82 
84 {
85 #if HAVE_YASM
87 
88  if (EXTERNAL_MMXEXT(cpu_flags))
89  gf->filter_line = gradfun_filter_line_mmxext;
90  if (EXTERNAL_SSSE3(cpu_flags))
91  gf->filter_line = gradfun_filter_line_ssse3;
92 
93  if (EXTERNAL_SSE2(cpu_flags))
94  gf->blur_line = gradfun_blur_line_sse2;
95 #endif /* HAVE_YASM */
96 }