80f8ca5f38f46f418b6fd8dd1bdbbdf58eb8ae3f
[libav.git] / libavcodec / x86 / vp6dsp.asm
1 ;******************************************************************************
2 ;* MMX/SSE2-optimized functions for the VP6 decoder
3 ;* Copyright (C) 2009 Sebastien Lucas <sebastien.lucas@gmail.com>
4 ;* Copyright (C) 2009 Zuxy Meng <zuxy.meng@gmail.com>
5 ;*
6 ;* This file is part of Libav.
7 ;*
8 ;* Libav is free software; you can redistribute it and/or
9 ;* modify it under the terms of the GNU Lesser General Public
10 ;* License as published by the Free Software Foundation; either
11 ;* version 2.1 of the License, or (at your option) any later version.
12 ;*
13 ;* Libav is distributed in the hope that it will be useful,
14 ;* but WITHOUT ANY WARRANTY; without even the implied warranty of
15 ;* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 ;* Lesser General Public License for more details.
17 ;*
18 ;* You should have received a copy of the GNU Lesser General Public
19 ;* License along with Libav; if not, write to the Free Software
20 ;* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
21 ;******************************************************************************
22
23 %include "libavutil/x86/x86util.asm"
24
25 cextern pw_64
26
27 SECTION .text
28
29 %macro DIAG4 6
30 %if mmsize == 8
31 movq m0, [%1+%2]
32 movq m1, [%1+%3]
33 movq m3, m0
34 movq m4, m1
35 punpcklbw m0, m7
36 punpcklbw m1, m7
37 punpckhbw m3, m7
38 punpckhbw m4, m7
39 pmullw m0, [rsp+8*11] ; src[x-8 ] * biweight [0]
40 pmullw m1, [rsp+8*12] ; src[x ] * biweight [1]
41 pmullw m3, [rsp+8*11] ; src[x-8 ] * biweight [0]
42 pmullw m4, [rsp+8*12] ; src[x ] * biweight [1]
43 paddw m0, m1
44 paddw m3, m4
45 movq m1, [%1+%4]
46 movq m2, [%1+%5]
47 movq m4, m1
48 movq m5, m2
49 punpcklbw m1, m7
50 punpcklbw m2, m7
51 punpckhbw m4, m7
52 punpckhbw m5, m7
53 pmullw m1, [rsp+8*13] ; src[x+8 ] * biweight [2]
54 pmullw m2, [rsp+8*14] ; src[x+16] * biweight [3]
55 pmullw m4, [rsp+8*13] ; src[x+8 ] * biweight [2]
56 pmullw m5, [rsp+8*14] ; src[x+16] * biweight [3]
57 paddw m1, m2
58 paddw m4, m5
59 paddsw m0, m1
60 paddsw m3, m4
61 paddsw m0, m6 ; Add 64
62 paddsw m3, m6 ; Add 64
63 psraw m0, 7
64 psraw m3, 7
65 packuswb m0, m3
66 movq [%6], m0
67 %else ; mmsize == 16
68 movq m0, [%1+%2]
69 movq m1, [%1+%3]
70 punpcklbw m0, m7
71 punpcklbw m1, m7
72 pmullw m0, m4 ; src[x-8 ] * biweight [0]
73 pmullw m1, m5 ; src[x ] * biweight [1]
74 paddw m0, m1
75 movq m1, [%1+%4]
76 movq m2, [%1+%5]
77 punpcklbw m1, m7
78 punpcklbw m2, m7
79 pmullw m1, m6 ; src[x+8 ] * biweight [2]
80 pmullw m2, m3 ; src[x+16] * biweight [3]
81 paddw m1, m2
82 paddsw m0, m1
83 paddsw m0, [pw_64] ; Add 64
84 psraw m0, 7
85 packuswb m0, m0
86 movq [%6], m0
87 %endif ; mmsize == 8/16
88 %endmacro
89
90 %macro SPLAT4REGS 0
91 %if mmsize == 8
92 movq m5, m3
93 punpcklwd m3, m3
94 movq m4, m3
95 punpckldq m3, m3
96 punpckhdq m4, m4
97 punpckhwd m5, m5
98 movq m2, m5
99 punpckhdq m2, m2
100 punpckldq m5, m5
101 movq [rsp+8*11], m3
102 movq [rsp+8*12], m4
103 movq [rsp+8*13], m5
104 movq [rsp+8*14], m2
105 %else ; mmsize == 16
106 pshuflw m4, m3, 0x0
107 pshuflw m5, m3, 0x55
108 pshuflw m6, m3, 0xAA
109 pshuflw m3, m3, 0xFF
110 punpcklqdq m4, m4
111 punpcklqdq m5, m5
112 punpcklqdq m6, m6
113 punpcklqdq m3, m3
114 %endif ; mmsize == 8/16
115 %endmacro
116
117 %macro vp6_filter_diag4 0
118 ; void ff_vp6_filter_diag4_<opt>(uint8_t *dst, uint8_t *src, int stride,
119 ; const int16_t h_weight[4], const int16_t v_weights[4])
120 cglobal vp6_filter_diag4, 5, 7, 8
121 mov r5, rsp ; backup stack pointer
122 and rsp, ~(mmsize-1) ; align stack
123 %if mmsize == 16
124 sub rsp, 8*11
125 %else
126 sub rsp, 8*15
127 movq m6, [pw_64]
128 %endif
129 %if ARCH_X86_64
130 movsxd r2, r2d
131 %endif
132
133 sub r1, r2
134
135 pxor m7, m7
136 movq m3, [r3]
137 SPLAT4REGS
138
139 mov r3, rsp
140 mov r6, 11
141 .nextrow:
142 DIAG4 r1, -1, 0, 1, 2, r3
143 add r3, 8
144 add r1, r2
145 dec r6
146 jnz .nextrow
147
148 movq m3, [r4]
149 SPLAT4REGS
150
151 lea r3, [rsp+8]
152 mov r6, 8
153 .nextcol:
154 DIAG4 r3, -8, 0, 8, 16, r0
155 add r3, 8
156 add r0, r2
157 dec r6
158 jnz .nextcol
159
160 mov rsp, r5 ; restore stack pointer
161 RET
162 %endmacro
163
164 %if ARCH_X86_32
165 INIT_MMX mmx
166 vp6_filter_diag4
167 %endif
168
169 INIT_XMM sse2
170 vp6_filter_diag4