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 */