1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
|
/*
* Copyright (c) 2002 Michael Niedermayer <michaelni@gmx.at>
* Copyright (c) 2013 Paul B Mahol
*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "libavutil/attributes.h"
#include "libavutil/x86/cpu.h"
#include "libavutil/x86/asm.h"
#include "libavfilter/vf_noise.h"
#if HAVE_INLINE_ASM
static void line_noise_mmx(uint8_t *dst, const uint8_t *src,
const int8_t *noise, int len, int shift)
{
x86_reg mmx_len= len & (~7);
noise += shift;
__asm__ volatile(
"mov %3, %%"FF_REG_a" \n\t"
"pcmpeqb %%mm7, %%mm7 \n\t"
"psllw $15, %%mm7 \n\t"
"packsswb %%mm7, %%mm7 \n\t"
".p2align 4 \n\t"
"1: \n\t"
"movq (%0, %%"FF_REG_a"), %%mm0 \n\t"
"movq (%1, %%"FF_REG_a"), %%mm1 \n\t"
"pxor %%mm7, %%mm0 \n\t"
"paddsb %%mm1, %%mm0 \n\t"
"pxor %%mm7, %%mm0 \n\t"
"movq %%mm0, (%2, %%"FF_REG_a") \n\t"
"add $8, %%"FF_REG_a" \n\t"
" js 1b \n\t"
:: "r" (src+mmx_len), "r" (noise+mmx_len), "r" (dst+mmx_len), "g" (-mmx_len)
: "%"FF_REG_a
);
if (mmx_len != len)
ff_line_noise_c(dst+mmx_len, src+mmx_len, noise+mmx_len, len-mmx_len, 0);
}
#if HAVE_6REGS
static void line_noise_avg_mmx(uint8_t *dst, const uint8_t *src,
int len, const int8_t * const *shift)
{
x86_reg mmx_len = len & (~7);
__asm__ volatile(
"mov %5, %%"FF_REG_a" \n\t"
".p2align 4 \n\t"
"1: \n\t"
"movq (%1, %%"FF_REG_a"), %%mm1 \n\t"
"movq (%0, %%"FF_REG_a"), %%mm0 \n\t"
"paddb (%2, %%"FF_REG_a"), %%mm1\n\t"
"paddb (%3, %%"FF_REG_a"), %%mm1\n\t"
"movq %%mm0, %%mm2 \n\t"
"movq %%mm1, %%mm3 \n\t"
"punpcklbw %%mm0, %%mm0 \n\t"
"punpckhbw %%mm2, %%mm2 \n\t"
"punpcklbw %%mm1, %%mm1 \n\t"
"punpckhbw %%mm3, %%mm3 \n\t"
"pmulhw %%mm0, %%mm1 \n\t"
"pmulhw %%mm2, %%mm3 \n\t"
"paddw %%mm1, %%mm1 \n\t"
"paddw %%mm3, %%mm3 \n\t"
"paddw %%mm0, %%mm1 \n\t"
"paddw %%mm2, %%mm3 \n\t"
"psrlw $8, %%mm1 \n\t"
"psrlw $8, %%mm3 \n\t"
"packuswb %%mm3, %%mm1 \n\t"
"movq %%mm1, (%4, %%"FF_REG_a") \n\t"
"add $8, %%"FF_REG_a" \n\t"
" js 1b \n\t"
:: "r" (src+mmx_len), "r" (shift[0]+mmx_len), "r" (shift[1]+mmx_len), "r" (shift[2]+mmx_len),
"r" (dst+mmx_len), "g" (-mmx_len)
: "%"FF_REG_a
);
if (mmx_len != len){
const int8_t *shift2[3] = { shift[0]+mmx_len, shift[1]+mmx_len, shift[2]+mmx_len };
ff_line_noise_avg_c(dst+mmx_len, src+mmx_len, len-mmx_len, shift2);
}
}
#endif /* HAVE_6REGS */
static void line_noise_mmxext(uint8_t *dst, const uint8_t *src,
const int8_t *noise, int len, int shift)
{
x86_reg mmx_len = len & (~7);
noise += shift;
__asm__ volatile(
"mov %3, %%"FF_REG_a" \n\t"
"pcmpeqb %%mm7, %%mm7 \n\t"
"psllw $15, %%mm7 \n\t"
"packsswb %%mm7, %%mm7 \n\t"
".p2align 4 \n\t"
"1: \n\t"
"movq (%0, %%"FF_REG_a"), %%mm0 \n\t"
"movq (%1, %%"FF_REG_a"), %%mm1 \n\t"
"pxor %%mm7, %%mm0 \n\t"
"paddsb %%mm1, %%mm0 \n\t"
"pxor %%mm7, %%mm0 \n\t"
"movntq %%mm0, (%2, %%"FF_REG_a") \n\t"
"add $8, %%"FF_REG_a" \n\t"
" js 1b \n\t"
:: "r" (src+mmx_len), "r" (noise+mmx_len), "r" (dst+mmx_len), "g" (-mmx_len)
: "%"FF_REG_a
);
if (mmx_len != len)
ff_line_noise_c(dst+mmx_len, src+mmx_len, noise+mmx_len, len-mmx_len, 0);
}
#endif /* HAVE_INLINE_ASM */
av_cold void ff_noise_init_x86(NoiseContext *n)
{
#if HAVE_INLINE_ASM
int cpu_flags = av_get_cpu_flags();
if (INLINE_MMX(cpu_flags)) {
n->line_noise = line_noise_mmx;
#if HAVE_6REGS
n->line_noise_avg = line_noise_avg_mmx;
#endif
}
if (INLINE_MMXEXT(cpu_flags)) {
n->line_noise = line_noise_mmxext;
}
#endif
}
|
