aboutsummaryrefslogtreecommitdiffstats
path: root/libavcodec/x86/vc1dsp_loopfilter.asm
blob: 49f67255cdc45e657cb39d536f3cae085ed6f306 (plain) (blame)
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
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
;******************************************************************************
;* VC1 loopfilter optimizations
;* Copyright (c) 2009 David Conrad
;*
;* 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"

cextern pw_4
cextern pw_5

SECTION .text

; dst_low, dst_high (src), zero
; zero-extends one vector from 8 to 16 bits
%macro UNPACK_8TO16 4
    mova      m%2, m%3
    punpckh%1 m%3, m%4
    punpckl%1 m%2, m%4
%endmacro

%macro STORE_4_WORDS 6
%if cpuflag(sse4)
    pextrw %1, %5, %6+0
    pextrw %2, %5, %6+1
    pextrw %3, %5, %6+2
    pextrw %4, %5, %6+3
%else
    movd  %6d, %5
%if mmsize==16
    psrldq %5, 4
%else
    psrlq  %5, 32
%endif
    mov    %1, %6w
    shr    %6, 16
    mov    %2, %6w
    movd  %6d, %5
    mov    %3, %6w
    shr    %6, 16
    mov    %4, %6w
%endif
%endmacro

; in:  p1 p0 q0 q1, clobbers p0
; out: p1 = (2*(p1 - q1) - 5*(p0 - q0) + 4) >> 3
%macro VC1_LOOP_FILTER_A0 4
    psubw  %1, %4
    psubw  %2, %3
    paddw  %1, %1
    pmullw %2, [pw_5]
    psubw  %1, %2
    paddw  %1, [pw_4]
    psraw  %1, 3
%endmacro

; in: p0 q0 a0 a1 a2
;     m0 m1 m7 m6 m5
; %1: size
; out: m0=p0' m1=q0'
%macro VC1_FILTER 1
    PABSW   m4, m7
    PABSW   m3, m6
    PABSW   m2, m5
    mova    m6, m4
    pminsw  m3, m2
    pcmpgtw m6, m3  ; if (a2 < a0 || a1 < a0)
    psubw   m3, m4
    pmullw  m3, [pw_5]   ; 5*(a3 - a0)
    PABSW   m2, m3
    psraw   m2, 3   ; abs(d/8)
    pxor    m7, m3  ; d_sign ^= a0_sign

    pxor    m5, m5
    movd    m3, r2d
%if %1 > 4
    punpcklbw m3, m3
%endif
    punpcklbw m3, m5
    pcmpgtw m3, m4  ; if (a0 < pq)
    pand    m6, m3

    mova    m3, m0
    psubw   m3, m1
    PABSW   m4, m3
    psraw   m4, 1
    pxor    m3, m7  ; d_sign ^ clip_sign
    psraw   m3, 15
    pminsw  m2, m4  ; min(d, clip)
    pcmpgtw m4, m5
    pand    m6, m4  ; filt3 (C return value)

; each set of 4 pixels is not filtered if the 3rd is not
%if mmsize==16
    pshuflw m4, m6, 0xaa
%if %1 > 4
    pshufhw m4, m4, 0xaa
%endif
%else
    pshufw  m4, m6, 0xaa
%endif
    pandn   m3, m4
    pand    m2, m6
    pand    m3, m2  ; d final

    psraw   m7, 15
    pxor    m3, m7
    psubw   m3, m7
    psubw   m0, m3
    paddw   m1, m3
    packuswb m0, m0
    packuswb m1, m1
%endmacro

; 1st param: size of filter
; 2nd param: mov suffix equivalent to the filter size
%macro VC1_V_LOOP_FILTER 2
    pxor      m5, m5
    mov%2     m6, [r4]
    mov%2     m4, [r4+r1]
    mov%2     m7, [r4+2*r1]
    mov%2     m0, [r4+r3]
    punpcklbw m6, m5
    punpcklbw m4, m5
    punpcklbw m7, m5
    punpcklbw m0, m5

    VC1_LOOP_FILTER_A0 m6, m4, m7, m0
    mov%2     m1, [r0]
    mov%2     m2, [r0+r1]
    punpcklbw m1, m5
    punpcklbw m2, m5
    mova      m4, m0
    VC1_LOOP_FILTER_A0 m7, m4, m1, m2
    mov%2     m3, [r0+2*r1]
    mov%2     m4, [r0+r3]
    punpcklbw m3, m5
    punpcklbw m4, m5
    mova      m5, m1
    VC1_LOOP_FILTER_A0 m5, m2, m3, m4

    VC1_FILTER %1
    mov%2 [r4+r3], m0
    mov%2 [r0],    m1
%endmacro

; 1st param: size of filter
;     NOTE: UNPACK_8TO16 this number of 8 bit numbers are in half a register
; 2nd (optional) param: temp register to use for storing words
%macro VC1_H_LOOP_FILTER 1-2
%if %1 == 4
    movq      m0, [r0     -4]
    movq      m1, [r0+  r1-4]
    movq      m2, [r0+2*r1-4]
    movq      m3, [r0+  r3-4]
    TRANSPOSE4x4B 0, 1, 2, 3, 4
%else
    movq      m0, [r0     -4]
    movq      m4, [r0+  r1-4]
    movq      m1, [r0+2*r1-4]
    movq      m5, [r0+  r3-4]
    movq      m2, [r4     -4]
    movq      m6, [r4+  r1-4]
    movq      m3, [r4+2*r1-4]
    movq      m7, [r4+  r3-4]
    punpcklbw m0, m4
    punpcklbw m1, m5
    punpcklbw m2, m6
    punpcklbw m3, m7
    TRANSPOSE4x4W 0, 1, 2, 3, 4
%endif
    pxor      m5, m5

    UNPACK_8TO16 bw, 6, 0, 5
    UNPACK_8TO16 bw, 7, 1, 5
    VC1_LOOP_FILTER_A0 m6, m0, m7, m1
    UNPACK_8TO16 bw, 4, 2, 5
    mova    m0, m1                      ; m0 = p0
    VC1_LOOP_FILTER_A0 m7, m1, m4, m2
    UNPACK_8TO16 bw, 1, 3, 5
    mova    m5, m4
    VC1_LOOP_FILTER_A0 m5, m2, m1, m3
    SWAP 1, 4                           ; m1 = q0

    VC1_FILTER %1
    punpcklbw m0, m1
%if %0 > 1
    STORE_4_WORDS [r0-1], [r0+r1-1], [r0+2*r1-1], [r0+r3-1], m0, %2
%if %1 > 4
    psrldq m0, 4
    STORE_4_WORDS [r4-1], [r4+r1-1], [r4+2*r1-1], [r4+r3-1], m0, %2
%endif
%else
    STORE_4_WORDS [r0-1], [r0+r1-1], [r0+2*r1-1], [r0+r3-1], m0, 0
    STORE_4_WORDS [r4-1], [r4+r1-1], [r4+2*r1-1], [r4+r3-1], m0, 4
%endif
%endmacro


%macro START_V_FILTER 0
    mov  r4, r0
    lea  r3, [4*r1]
    sub  r4, r3
    lea  r3, [r1+2*r1]
    imul r2, 0x01010101
%endmacro

%macro START_H_FILTER 1
    lea  r3, [r1+2*r1]
%if %1 > 4
    lea  r4, [r0+4*r1]
%endif
    imul r2, 0x01010101
%endmacro

; void ff_vc1_v_loop_filter4_mmxext(uint8_t *src, ptrdiff_t stride, int pq)
INIT_MMX mmxext
cglobal vc1_v_loop_filter4, 3,5,0
    START_V_FILTER
    VC1_V_LOOP_FILTER 4, d
    RET

; void ff_vc1_h_loop_filter4_mmxext(uint8_t *src, ptrdiff_t stride, int pq)
INIT_MMX mmxext
cglobal vc1_h_loop_filter4, 3,5,0
    START_H_FILTER 4
    VC1_H_LOOP_FILTER 4, r4
    RET

INIT_XMM sse2
; void ff_vc1_v_loop_filter8_sse2(uint8_t *src, ptrdiff_t stride, int pq)
cglobal vc1_v_loop_filter8, 3,5,8
    START_V_FILTER
    VC1_V_LOOP_FILTER 8, q
    RET

; void ff_vc1_h_loop_filter8_sse2(uint8_t *src, ptrdiff_t stride, int pq)
cglobal vc1_h_loop_filter8, 3,6,8
    START_H_FILTER 8
    VC1_H_LOOP_FILTER 8, r5
    RET

INIT_MMX ssse3
; void ff_vc1_v_loop_filter4_ssse3(uint8_t *src, ptrdiff_t stride, int pq)
cglobal vc1_v_loop_filter4, 3,5,0
    START_V_FILTER
    VC1_V_LOOP_FILTER 4, d
    RET

; void ff_vc1_h_loop_filter4_ssse3(uint8_t *src, ptrdiff_t stride, int pq)
cglobal vc1_h_loop_filter4, 3,5,0
    START_H_FILTER 4
    VC1_H_LOOP_FILTER 4, r4
    RET

INIT_XMM ssse3
; void ff_vc1_v_loop_filter8_ssse3(uint8_t *src, ptrdiff_t stride, int pq)
cglobal vc1_v_loop_filter8, 3,5,8
    START_V_FILTER
    VC1_V_LOOP_FILTER 8, q
    RET

; void ff_vc1_h_loop_filter8_ssse3(uint8_t *src, ptrdiff_t stride, int pq)
cglobal vc1_h_loop_filter8, 3,6,8
    START_H_FILTER 8
    VC1_H_LOOP_FILTER 8, r5
    RET

INIT_XMM sse4
; void ff_vc1_h_loop_filter8_sse4(uint8_t *src, ptrdiff_t stride, int pq)
cglobal vc1_h_loop_filter8, 3,5,8
    START_H_FILTER 8
    VC1_H_LOOP_FILTER 8
    RET