aboutsummaryrefslogtreecommitdiffstats
path: root/libavcodec/riscv/h264dsp_rvv.S
blob: 0d641008cbc4ac562184d72eb8a5120f221015da (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
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
/*
 * SPDX-License-Identifier: BSD-2-Clause
 *
 * Copyright © 2024 Rémi Denis-Courmont.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 * 1. Redistributions of source code must retain the above copyright notice,
 *    this list of conditions and the following disclaimer.
 *
 * 2. Redistributions in binary form must reproduce the above copyright notice,
 *    this list of conditions and the following disclaimer in the documentation
 *    and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 */

#include "libavutil/riscv/asm.S"

func ff_h264_weight_pixels_simple_8_rvv, zve32x
        csrwi   vxrm, 0
        sll     a5, a5, a3
1:
        vsetvli     zero, a6, e16, m2, ta, ma
        vle8.v  v8, (a0)
        addi    a2, a2, -1
        vzext.vf2   v24, v8
        vmul.vx     v16, v24, a4
        vsadd.vx    v16, v16, a5
        vmax.vx v16, v16, zero
        vsetvli zero, zero, e8, m1, ta, ma
        vnclipu.wx  v8, v16, a3
        vse8.v  v8, (a0)
        add     a0, a0, a1
        bnez    a2, 1b

        ret
endfunc

        .variant_cc ff_h264_biweight_pixels_simple_8_rvv
func ff_h264_biweight_pixels_simple_8_rvv, zve32x
        csrwi   vxrm, 2
        addi    a7, a7, 1
        ori     a7, a7, 1
        sll     a7, a7, a4
        addi    a4, a4, 1
1:
        vsetvli zero, t6, e16, m2, ta, ma
        vle8.v  v8, (a0)
        addi    a3, a3, -1
        vle8.v  v12, (a1)
        add     a1, a1, a2
        vmv.v.x v16, a7
        vsetvli     zero, zero, e8, m1, ta, ma
        vwmaccsu.vx v16, a5, v8
        vwmaccsu.vx v16, a6, v12
        vsetvli     zero, zero, e16, m2, ta, ma
        vmax.vx v16, v16, zero
        vsetvli zero, zero, e8, m1, ta, ma
        vnclipu.wx  v8, v16, a4
        vse8.v  v8, (a0)
        add     a0, a0, a2
        bnez    a3, 1b

        ret
endfunc

func ff_h264_weight_pixels_8_rvv, zve32x
        csrwi   vxrm, 0
        sll     a5, a5, a3
1:
        mv      t0, a0
        mv      t6, a6
2:
        vsetvli     t2, a2, e16, m8, ta, ma
        vlsseg2e8.v v0, (t0), a1
        addi    t6, t6, -2
        vzext.vf2   v16, v0
        vzext.vf2   v24, v4
        vmul.vx     v16, v16, a4
        vmul.vx     v24, v24, a4
        vsadd.vx    v16, v16, a5
        vsadd.vx    v24, v24, a5
        vmax.vx     v16, v16, zero
        vmax.vx     v24, v24, zero
        vsetvli     zero, zero, e8, m4, ta, ma
        vnclipu.wx  v0, v16, a3
        vnclipu.wx  v4, v24, a3
        vssseg2e8.v v0, (t0), a1
        addi    t0, t0, 2
        bnez    t6, 2b

        mul     t3, a1, t2
        sub     a2, a2, t2
        add     a0, a0, t3
        bnez    a2, 1b

        ret
endfunc

        .variant_cc ff_h264_biweight_pixels_8_rvv
func ff_h264_biweight_pixels_8_rvv, zve32x
        csrwi   vxrm, 2
        addi    a7, a7, 1
        ori     a7, a7, 1
        sll     a7, a7, a4
        addi    a4, a4, 1
1:
        mv      t0, a0
        mv      t1, a1
        mv      t5, t6
2:
        vsetvli     t2, a3, e16, m8, ta, ma
        vlsseg2e8.v v0, (t0), a2
        vlsseg2e8.v v8, (t1), a2
        addi    t5, t5, -2
        vmv.v.x v16, a7
        vmv.v.x v24, a7
        vsetvli     zero, zero, e8, m4, ta, ma
        vwmaccsu.vx v16, a5, v0
        vwmaccsu.vx v24, a5, v4
        vwmaccsu.vx v16, a6, v8
        vwmaccsu.vx v24, a6, v12
        vsetvli     zero, zero, e16, m8, ta, ma
        vmax.vx     v16, v16, zero
        vmax.vx     v24, v24, zero
        vsetvli     zero, zero, e8, m4, ta, ma
        vnclipu.wx  v0, v16, a4
        vnclipu.wx  v4, v24, a4
        vssseg2e8.v v0, (t0), a2
        addi    t0, t0, 2
        addi    t1, t1, 2
        bnez    t5, 2b

        mul     t3, a2, t2
        sub     a3, a3, t2
        add     a0, a0, t3
        add     a1, a1, t3
        bnez    a3, 1b

        ret
endfunc

.irp    w, 16, 8, 4, 2
func ff_h264_weight_pixels\w\()_8_rvv, zve32x
        lpad    0
        li      a6, \w
        .if     \w == 16
        j       ff_h264_weight_pixels_simple_8_rvv
        .else
        j       ff_h264_weight_pixels_8_rvv
        .endif
endfunc

func ff_h264_biweight_pixels\w\()_8_rvv, zve32x
        lpad    0
        li      t6, \w
        .if     \w == 16
        j       ff_h264_biweight_pixels_simple_8_rvv
        .else
        j       ff_h264_biweight_pixels_8_rvv
        .endif
endfunc
.endr

        .global ff_h264_weight_funcs_8_rvv
        .hidden ff_h264_weight_funcs_8_rvv
const ff_h264_weight_funcs_8_rvv
        .irp    w, 16, 8, 4, 2
#if __riscv_xlen == 32
        .word   ff_h264_weight_pixels\w\()_8_rvv
        .word   ff_h264_biweight_pixels\w\()_8_rvv
#elif __riscv_xlen == 64
        .dword  ff_h264_weight_pixels\w\()_8_rvv
        .dword  ff_h264_biweight_pixels\w\()_8_rvv
#else
        .qword  ff_h264_weight_pixels\w\()_8_rvv
        .qword  ff_h264_biweight_pixels\w\()_8_rvv
#endif
        .endr
endconst

        .variant_cc ff_h264_loop_filter_luma_8_rvv
func ff_h264_loop_filter_luma_8_rvv, zve32x
        # p2: v8, p1: v9, p0: v10, q0: v11, q1: v12, q2: v13
        # alpha: a2, beta: a3, tc_orig: v6
        csrwi        vxrm, 0
        vaaddu.vv    v14, v10, v11 # (p0 + q0 + 1) / 2
        vwsubu.vv    v16, v9, v12
        vwaddu.vv    v18, v8, v14
        vwaddu.vv    v20, v13, v14
        vnsra.wi     v24, v16, 2   # (p1 - q1) / 4
        vnsrl.wi     v14, v18, 1
        vnsrl.wi     v15, v20, 1
        vneg.v       v5, v6        # -tc_orig
        vwsubu.vv    v22, v11, v10 # q0 - p0
        vwsubu.vv    v18, v14, v9
        vwsubu.vv    v20, v15, v12
        vwadd.wv     v16, v22, v24
        vmsge.vi     v7, v6, 0     # tc_orig >= 0
        vnclip.wi    v14, v18, 0
        vnclip.wi    v15, v20, 0
        vnclip.wi    v16, v16, 1   # clip8((q0 - p0 + (p1 - q1) / 4 + 1) >> 1)
        vmin.vv      v14, v14, v6
        vmin.vv      v15, v15, v6
        vmax.vv      v14, v14, v5  # clip(p2 + ... - p1, +/-tc_orig)
        vmax.vv      v15, v15, v5  # clip(q2 + ... - q1, +/-tc_orig)
        vwsubu.vv    v20, v10, v11
        vwsubu.vv    v24, v9, v10
        vwsubu.vv    v26, v10, v9
        vwsubu.vv    v28, v12, v11
        vwsubu.vv    v30, v11, v12
        vwsubu.vv    v0, v8, v10
        vwsubu.vv    v2, v10, v8
        vwsubu.vv    v4, v13, v11
        vwsubu.vv    v18, v11, v13
        vsetvli      zero, zero, e16, m2, ta, ma
        vmax.vv      v20, v20, v22 # abs(p0 - q0)
        vmax.vv      v24, v24, v26 # abs(p1 - p0)
        vmax.vv      v28, v28, v30 # abs(q1 - q0)
        vmax.vv      v22, v0, v2   # abs(p2 - p0)
        vmax.vv      v26, v4, v18  # abs(q2 - q0)
        vmslt.vx     v1, v20, a2
        vmslt.vx     v2, v24, a3
        vmand.mm     v7, v7, v1
        vmslt.vx     v3, v28, a3
        vmand.mm     v7, v7, v2
        vmslt.vx     v0, v22, a3
        vmand.mm     v7, v7, v3    # whether to update p0 and q0
        vmslt.vx     v1, v26, a3
        vmand.mm     v0, v0, v7
        vsetvli      zero, zero, e8, m1, ta, mu
        vadd.vi      v6, v6, 1, v0.t     # tc++
        vadd.vv      v9, v9, v14, v0.t   # p1'
        vmand.mm     v0, v1, v7
        vadd.vi      v6, v6, 1, v0.t     # tc++
        vadd.vv      v12, v12, v15, v0.t # q1'
        vneg.v       v5, v6              # -tc
        vmin.vv      v16, v16, v6
        vwcvtu.x.x.v v18, v10
        vmax.vv      v16, v16, v5
        vwcvtu.x.x.v v20, v11
        vwadd.wv     v18, v18, v16
        vwsub.wv     v20, v20, v16
        vmmv.m       v0, v7
        vsetvli      zero, zero, e16, m2, ta, ma
        vmax.vx      v18, v18, zero
        vmax.vx      v20, v20, zero
        vsetvli      zero, zero, e8, m1, ta, mu
        vnclipu.wi   v10, v18, 0, v0.t   # p0'
        vnclipu.wi   v11, v20, 0, v0.t   # q0'
        jr           t0
endfunc

func ff_h264_v_loop_filter_luma_8_rvv, zve32x
        lpad    0
        vsetivli  zero, 4, e32, m1, ta, ma
        vle8.v    v4, (a4)
        li        t0, 0x01010101
        vzext.vf4 v6, v4
        sub       t3, a0, a1
        vmul.vx   v6, v6, t0
        vsetivli  zero, 16, e8, m1, ta, ma
        vle8.v    v11, (a0)
        sub       t2, t3, a1
        vid.v     v0
        vle8.v    v10, (t3)
        sub       t1, t2, a1
        vle8.v    v9, (t2)
        add       t5, a0, a1
        vle8.v    v8, (t1)
        add       t6, t5, a1
        vle8.v    v12, (t5)
        vle8.v    v13, (t6)
        jal       t0, ff_h264_loop_filter_luma_8_rvv
        vse8.v    v9, (t2)
        vse8.v    v10, (t3)
        vse8.v    v11, (a0)
        vse8.v    v12, (t5)
        ret
endfunc

func ff_h264_h_loop_filter_luma_8_rvv, zve32x
        lpad    0
        vsetivli    zero, 4, e32, m1, ta, ma
        vle8.v      v4, (a4)
        li          t0, 0x01010101
        vzext.vf4   v6, v4
        addi        a0, a0, -3
        vmul.vx     v6, v6, t0
        vsetivli    zero, 16, e8, m1, ta, ma
        vlsseg6e8.v v8, (a0), a1
        jal         t0, ff_h264_loop_filter_luma_8_rvv
        vssseg6e8.v v8, (a0), a1
        ret
endfunc

func ff_h264_h_loop_filter_luma_mbaff_8_rvv, zve32x
        lpad    0
        vsetivli    zero, 4, e16, mf2, ta, ma
        vle8.v      v4, (a4)
        li          t0, 0x0101
        vzext.vf2   v6, v4
        addi        a0, a0, -3
        vmul.vx     v6, v6, t0    # tc_orig
        vsetivli    zero, 8, e8, m1, ta, ma
        vlsseg6e8.v v8, (a0), a1
        jal         t0, ff_h264_loop_filter_luma_8_rvv
        vssseg6e8.v v8, (a0), a1
        ret
endfunc