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
|
;*****************************************************************************
;* x86-optimized functions for idet filter
;*
;* Copyright (C) 2014 Pascal Massimino (pascal.massimino@gmail.com)
;* Copyright (c) 2014 Neil Birkbeck (birkbeck@google.com)
;*
;* 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/x86/x86util.asm"
SECTION_TEXT
%if ARCH_X86_32
; Implementation that does 8-bytes at a time using single-word operations.
%macro IDET_FILTER_LINE 1
INIT_MMX %1
cglobal idet_filter_line, 4, 5, 0, a, b, c, width, index
xor indexq, indexq
%define m_zero m2
%define m_sum m5
pxor m_sum, m_sum
pxor m_zero, m_zero
.loop:
movu m0, [aq + indexq*1]
punpckhbw m1, m0, m_zero
punpcklbw m0, m_zero
movu m3, [cq + indexq*1]
punpckhbw m4, m3, m_zero
punpcklbw m3, m_zero
paddsw m1, m4
paddsw m0, m3
movu m3, [bq + indexq*1]
punpckhbw m4, m3, m_zero
punpcklbw m3, m_zero
paddw m4, m4
paddw m3, m3
psubsw m1, m4
psubsw m0, m3
ABS2 m1, m0, m4, m3
paddw m0, m1
punpckhwd m1, m0, m_zero
punpcklwd m0, m_zero
paddd m0, m1
paddd m_sum, m0
add indexq, 0x8
CMP widthd, indexd
jg .loop
mova m0, m_sum
psrlq m_sum, 0x20
paddd m0, m_sum
movd eax, m0
RET
%endmacro
IDET_FILTER_LINE mmxext
IDET_FILTER_LINE mmx
%endif
; SSE2 8-bit implementation that does 16-bytes at a time:
INIT_XMM sse2
cglobal idet_filter_line, 4, 6, 7, a, b, c, width, index, total
xor indexq, indexq
pxor m0, m0
pxor m1, m1
.sse2_loop:
movu m2, [bq + indexq*1] ; B
movu m3, [aq + indexq*1] ; A
mova m6, m2
mova m4, m3
psubusb m5, m2, m3 ; ba
movu m3, [cq + indexq*1] ; C
add indexq, 0x10
psubusb m4, m2 ; ab
CMP indexd, widthd
psubusb m6, m3 ; bc
psubusb m3, m2 ; cb
psadbw m4, m6 ; |ab - bc|
paddq m0, m4
psadbw m5, m3 ; |ba - cb|
paddq m1, m5
jl .sse2_loop
paddq m0, m1
movhlps m1, m0
paddq m0, m1
movd eax, m0
RET
|
