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/cpu.h"
26 #include "libavfilter/gradfun.h"
28 void ff_gradfun_filter_line_mmxext(intptr_t x, uint8_t *dst, const uint8_t *src,
29 const uint16_t *dc, int thresh,
30 const uint16_t *dithers);
31 void ff_gradfun_filter_line_ssse3(intptr_t x, uint8_t *dst, const uint8_t *src,
32 const uint16_t *dc, int thresh,
33 const uint16_t *dithers);
35 void ff_gradfun_blur_line_movdqa_sse2(intptr_t x, uint16_t *buf,
36 const uint16_t *buf1, uint16_t *dc,
37 const uint8_t *src1, const uint8_t *src2);
38 void ff_gradfun_blur_line_movdqu_sse2(intptr_t x, uint16_t *buf,
39 const uint16_t *buf1, uint16_t *dc,
40 const uint8_t *src1, const uint8_t *src2);
43 static void gradfun_filter_line_mmxext(uint8_t *dst, const uint8_t *src,
45 int width, int thresh,
46 const uint16_t *dithers)
51 ff_gradfun_filter_line_c(dst + x, src + x, dc + x / 2,
52 width - x, thresh, dithers);
56 ff_gradfun_filter_line_mmxext(x, dst + width, src + width, dc + width / 2,
60 static void gradfun_filter_line_ssse3(uint8_t *dst, const uint8_t *src, const uint16_t *dc,
61 int width, int thresh,
62 const uint16_t *dithers)
66 // could be 10% faster if I somehow eliminated this
68 ff_gradfun_filter_line_c(dst + x, src + x, dc + x / 2,
69 width - x, thresh, dithers);
73 ff_gradfun_filter_line_ssse3(x, dst + width, src + width, dc + width / 2,
77 static void gradfun_blur_line_sse2(uint16_t *dc, uint16_t *buf, const uint16_t *buf1,
78 const uint8_t *src, int src_linesize, int width)
80 intptr_t x = -2 * width;
81 if (((intptr_t) src | src_linesize) & 15)
82 ff_gradfun_blur_line_movdqu_sse2(x, buf + width, buf1 + width,
83 dc + width, src + width * 2,
84 src + width * 2 + src_linesize);
86 ff_gradfun_blur_line_movdqa_sse2(x, buf + width, buf1 + width,
87 dc + width, src + width * 2,
88 src + width * 2 + src_linesize);
90 #endif /* HAVE_X86ASM */
92 av_cold void ff_gradfun_init_x86(GradFunContext *gf)
95 int cpu_flags = av_get_cpu_flags();
97 if (EXTERNAL_MMXEXT(cpu_flags))
98 gf->filter_line = gradfun_filter_line_mmxext;
99 if (EXTERNAL_SSSE3(cpu_flags))
100 gf->filter_line = gradfun_filter_line_ssse3;
102 if (EXTERNAL_SSE2(cpu_flags))
103 gf->blur_line = gradfun_blur_line_sse2;
104 #endif /* HAVE_X86ASM */