2 * Copyright (C) 2009 Loren Merritt <lorenm@u.washington.edu>
4 * This file is part of FFmpeg.
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.
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.
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
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"
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
);
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
);
44 static void gradfun_filter_line_mmxext(uint8_t *dst
, const uint8_t *src
,
46 int width
, int thresh
,
47 const uint16_t *dithers
)
52 ff_gradfun_filter_line_c(dst
+ x
, src
+ x
, dc
+ x
/ 2,
53 width
- x
, thresh
, dithers
);
57 ff_gradfun_filter_line_mmxext(x
, dst
+ width
, src
+ width
, dc
+ width
/ 2,
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
)
67 // could be 10% faster if I somehow eliminated this
69 ff_gradfun_filter_line_c(dst
+ x
, src
+ x
, dc
+ x
/ 2,
70 width
- x
, thresh
, dithers
);
74 ff_gradfun_filter_line_ssse3(x
, dst
+ width
, src
+ width
, dc
+ width
/ 2,
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
)
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
);
87 ff_gradfun_blur_line_movdqa_sse2(x
, buf
+ width
, buf1
+ width
,
88 dc
+ width
, src
+ width
* 2,
89 src
+ width
* 2 + src_linesize
);
91 #endif /* HAVE_YASM */
93 av_cold
void ff_gradfun_init_x86(GradFunContext
*gf
)
96 int cpu_flags
= av_get_cpu_flags();
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
;
103 if (EXTERNAL_SSE2(cpu_flags
))
104 gf
->blur_line
= gradfun_blur_line_sse2
;
105 #endif /* HAVE_YASM */