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
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
|
;******************************************************************************
;* x86 optimizations for PNG decoding
;*
;* Copyright (c) 2008 Loren Merritt <lorenm@u.washington.edu>
;* Copyright (c) 2012 Ronald S. Bultje <rsbultje@gmail.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
;* 51, Inc., Foundation Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
;******************************************************************************
%include "libavutil/x86/x86util.asm"
SECTION_RODATA
cextern pw_255
SECTION_TEXT
; %1 = nr. of xmm registers used
%macro ADD_BYTES_FN 1
cglobal add_bytes_l2, 4, 6, %1, dst, src1, src2, wa, w, i
%if ARCH_X86_64
movsxd waq, wad
%endif
xor iq, iq
; vector loop
mov wq, waq
and waq, ~(mmsize*2-1)
jmp .end_v
.loop_v:
mova m0, [src1q+iq]
mova m1, [src1q+iq+mmsize]
paddb m0, [src2q+iq]
paddb m1, [src2q+iq+mmsize]
mova [dstq+iq ], m0
mova [dstq+iq+mmsize], m1
add iq, mmsize*2
.end_v:
cmp iq, waq
jl .loop_v
%if mmsize == 16
; vector loop
mov waq, wq
and waq, ~7
jmp .end_l
.loop_l:
movq mm0, [src1q+iq]
paddb mm0, [src2q+iq]
movq [dstq+iq ], mm0
add iq, 8
.end_l:
cmp iq, waq
jl .loop_l
%endif
; scalar loop for leftover
jmp .end_s
.loop_s:
mov wab, [src1q+iq]
add wab, [src2q+iq]
mov [dstq+iq], wab
inc iq
.end_s:
cmp iq, wq
jl .loop_s
REP_RET
%endmacro
%if ARCH_X86_32
INIT_MMX mmx
ADD_BYTES_FN 0
%endif
INIT_XMM sse2
ADD_BYTES_FN 2
%macro ADD_PAETH_PRED_FN 1
cglobal add_png_paeth_prediction, 5, 7, %1, dst, src, top, w, bpp, end, cntr
%if ARCH_X86_64
movsxd bppq, bppd
movsxd wq, wd
%endif
lea endq, [dstq+wq-(mmsize/2-1)]
sub topq, dstq
sub srcq, dstq
sub dstq, bppq
pxor m7, m7
PUSH dstq
lea cntrq, [bppq-1]
shr cntrq, 2 + mmsize/16
.bpp_loop:
lea dstq, [dstq+cntrq*(mmsize/2)]
movh m0, [dstq]
movh m1, [topq+dstq]
punpcklbw m0, m7
punpcklbw m1, m7
add dstq, bppq
.loop:
mova m2, m1
movh m1, [topq+dstq]
mova m3, m2
punpcklbw m1, m7
mova m4, m2
psubw m3, m1
psubw m4, m0
mova m5, m3
paddw m5, m4
%if cpuflag(ssse3)
pabsw m3, m3
pabsw m4, m4
pabsw m5, m5
%else ; !cpuflag(ssse3)
psubw m7, m5
pmaxsw m5, m7
pxor m6, m6
pxor m7, m7
psubw m6, m3
psubw m7, m4
pmaxsw m3, m6
pmaxsw m4, m7
pxor m7, m7
%endif ; cpuflag(ssse3)
mova m6, m4
pminsw m6, m5
pcmpgtw m3, m6
pcmpgtw m4, m5
mova m6, m4
pand m4, m3
pandn m6, m3
pandn m3, m0
movh m0, [srcq+dstq]
pand m6, m1
pand m2, m4
punpcklbw m0, m7
paddw m0, m6
paddw m3, m2
paddw m0, m3
pand m0, [pw_255]
mova m3, m0
packuswb m3, m3
movh [dstq], m3
add dstq, bppq
cmp dstq, endq
jle .loop
mov dstq, [rsp]
dec cntrq
jge .bpp_loop
POP dstq
RET
%endmacro
INIT_MMX mmxext
ADD_PAETH_PRED_FN 0
INIT_MMX ssse3
ADD_PAETH_PRED_FN 0
|
