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1 /*
2  * This file is part of FFmpeg.
3  *
4  * Copyright (c) 2011, 2012 Hyllian/Jararaca <sergiogdb@gmail.com>
5  * Copyright (c) 2014 Arwa Arif <arwaarif1994@gmail.com>
6  *
7  * FFmpeg is free software; you can redistribute it and/or
8  * modify it under the terms of the GNU Lesser General Public
9  * License as published by the Free Software Foundation; either
10  * version 2.1 of the License, or (at your option) any later version.
11  *
12  * FFmpeg is distributed in the hope that it will be useful,
13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
15  * Lesser General Public License for more details.
16  *
17  * You should have received a copy of the GNU Lesser General Public
18  * License along with FFmpeg; if not, write to the Free Software
19  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20  */
21 
22 /**
23  * @file
24  * XBR Filter is used for depixelization of image.
25  * This is based on Hyllian's xBR shader.
26  *
27  * @see https://forums.libretro.com/t/xbr-algorithm-tutorial/123
28  * @see https://github.com/yoyofr/iFBA/blob/master/fba_src/src/intf/video/scalers/xbr.cpp
29  */
30 
31 #include "libavutil/opt.h"
32 #include "libavutil/pixdesc.h"
33 #include "internal.h"
34 
35 #define LB_MASK       0x00FEFEFE
36 #define RED_BLUE_MASK 0x00FF00FF
37 #define GREEN_MASK    0x0000FF00
38 
39 #ifdef PI
40 #undef PI
41 #endif
42 
43 typedef int (*xbrfunc_t)(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs);
44 
45 typedef struct XBRContext {
46     const AVClass *class;
47     int n;
48     xbrfunc_t func;
49     uint32_t rgbtoyuv[1<<24];
50 } XBRContext;
51 
52 typedef struct ThreadData {
53     AVFrame *in, *out;
54     const uint32_t *rgbtoyuv;
55 } ThreadData;
56 
57 #define OFFSET(x) offsetof(XBRContext, x)
58 #define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM
59 static const AVOption xbr_options[] = {
60     { "n", "set scale factor", OFFSET(n), AV_OPT_TYPE_INT, {.i64 = 3}, 2, 4, .flags = FLAGS },
61     { NULL }
62 };
63 
64 AVFILTER_DEFINE_CLASS(xbr);
65 
pixel_diff(uint32_t x,uint32_t y,const uint32_t * r2y)66 static uint32_t pixel_diff(uint32_t x, uint32_t y, const uint32_t *r2y)
67 {
68 #define YMASK 0xff0000
69 #define UMASK 0x00ff00
70 #define VMASK 0x0000ff
71 #define ABSDIFF(a,b) (abs((int)(a)-(int)(b)))
72 
73     uint32_t yuv1 = r2y[x & 0xffffff];
74     uint32_t yuv2 = r2y[y & 0xffffff];
75 
76     return (ABSDIFF(yuv1 & YMASK, yuv2 & YMASK) >> 16) +
77            (ABSDIFF(yuv1 & UMASK, yuv2 & UMASK) >>  8) +
78             ABSDIFF(yuv1 & VMASK, yuv2 & VMASK);
79 }
80 
81 #define ALPHA_BLEND_128_W(a, b) ((((a) & LB_MASK) >> 1) + (((b) & LB_MASK) >> 1))
82 #define ALPHA_BLEND_BASE(a, b, m, s) (  (RED_BLUE_MASK & (((a) & RED_BLUE_MASK) + (((((b) & RED_BLUE_MASK) - ((a) & RED_BLUE_MASK)) * (m)) >> (s)))) \
83                                       | (GREEN_MASK    & (((a) & GREEN_MASK)    + (((((b) & GREEN_MASK)    - ((a) & GREEN_MASK))    * (m)) >> (s)))))
84 #define ALPHA_BLEND_32_W(a, b)  ALPHA_BLEND_BASE(a, b, 1, 3)
85 #define ALPHA_BLEND_64_W(a, b)  ALPHA_BLEND_BASE(a, b, 1, 2)
86 #define ALPHA_BLEND_192_W(a, b) ALPHA_BLEND_BASE(a, b, 3, 2)
87 #define ALPHA_BLEND_224_W(a, b) ALPHA_BLEND_BASE(a, b, 7, 3)
88 
89 #define df(A, B) pixel_diff(A, B, r2y)
90 #define eq(A, B) (df(A, B) < 155)
91 
92 #define FILT2(PE, PI, PH, PF, PG, PC, PD, PB, PA, G5, C4, G0, D0, C1, B1, F4, I4, H5, I5, A0, A1,   \
93               N0, N1, N2, N3) do {                                                                  \
94     if (PE != PH && PE != PF) {                                                                     \
95         const unsigned e = df(PE,PC) + df(PE,PG) + df(PI,H5) + df(PI,F4) + (df(PH,PF)<<2);          \
96         const unsigned i = df(PH,PD) + df(PH,I5) + df(PF,I4) + df(PF,PB) + (df(PE,PI)<<2);          \
97         if (e <= i) {                                                                               \
98             const unsigned px = df(PE,PF) <= df(PE,PH) ? PF : PH;                                   \
99             if (e < i && (!eq(PF,PB) && !eq(PH,PD) || eq(PE,PI)                                     \
100                           && (!eq(PF,I4) && !eq(PH,I5))                                             \
101                           || eq(PE,PG) || eq(PE,PC))) {                                             \
102                 const unsigned ke = df(PF,PG);                                                      \
103                 const unsigned ki = df(PH,PC);                                                      \
104                 const int left    = ke<<1 <= ki && PE != PG && PD != PG;                            \
105                 const int up      = ke >= ki<<1 && PE != PC && PB != PC;                            \
106                 if (left && up) {                                                                   \
107                     E[N3] = ALPHA_BLEND_224_W(E[N3], px);                                           \
108                     E[N2] = ALPHA_BLEND_64_W( E[N2], px);                                           \
109                     E[N1] = E[N2];                                                                  \
110                 } else if (left) {                                                                  \
111                     E[N3] = ALPHA_BLEND_192_W(E[N3], px);                                           \
112                     E[N2] = ALPHA_BLEND_64_W( E[N2], px);                                           \
113                 } else if (up) {                                                                    \
114                     E[N3] = ALPHA_BLEND_192_W(E[N3], px);                                           \
115                     E[N1] = ALPHA_BLEND_64_W( E[N1], px);                                           \
116                 } else { /* diagonal */                                                             \
117                     E[N3] = ALPHA_BLEND_128_W(E[N3], px);                                           \
118                 }                                                                                   \
119             } else {                                                                                \
120                 E[N3] = ALPHA_BLEND_128_W(E[N3], px);                                               \
121             }                                                                                       \
122         }                                                                                           \
123     }                                                                                               \
124 } while (0)
125 
126 #define FILT3(PE, PI, PH, PF, PG, PC, PD, PB, PA, G5, C4, G0, D0, C1, B1, F4, I4, H5, I5, A0, A1,   \
127               N0, N1, N2, N3, N4, N5, N6, N7, N8) do {                                              \
128     if (PE != PH && PE != PF) {                                                                     \
129         const unsigned e = df(PE,PC) + df(PE,PG) + df(PI,H5) + df(PI,F4) + (df(PH,PF)<<2);          \
130         const unsigned i = df(PH,PD) + df(PH,I5) + df(PF,I4) + df(PF,PB) + (df(PE,PI)<<2);          \
131         if (e <= i) {                                                                               \
132             const unsigned px = df(PE,PF) <= df(PE,PH) ? PF : PH;                                   \
133             if (e < i && (!eq(PF,PB) && !eq(PF,PC) || !eq(PH,PD) && !eq(PH,PG) || eq(PE,PI)         \
134                           && (!eq(PF,F4) && !eq(PF,I4) || !eq(PH,H5) && !eq(PH,I5))                 \
135                           || eq(PE,PG) || eq(PE,PC))) {                                             \
136                 const unsigned ke = df(PF,PG);                                                      \
137                 const unsigned ki = df(PH,PC);                                                      \
138                 const int left    = ke<<1 <= ki && PE != PG && PD != PG;                            \
139                 const int up      = ke >= ki<<1 && PE != PC && PB != PC;                            \
140                 if (left && up) {                                                                   \
141                     E[N7] = ALPHA_BLEND_192_W(E[N7], px);                                           \
142                     E[N6] = ALPHA_BLEND_64_W( E[N6], px);                                           \
143                     E[N5] = E[N7];                                                                  \
144                     E[N2] = E[N6];                                                                  \
145                     E[N8] = px;                                                                     \
146                 } else if (left) {                                                                  \
147                     E[N7] = ALPHA_BLEND_192_W(E[N7], px);                                           \
148                     E[N5] = ALPHA_BLEND_64_W( E[N5], px);                                           \
149                     E[N6] = ALPHA_BLEND_64_W( E[N6], px);                                           \
150                     E[N8] = px;                                                                     \
151                 } else if (up) {                                                                    \
152                     E[N5] = ALPHA_BLEND_192_W(E[N5], px);                                           \
153                     E[N7] = ALPHA_BLEND_64_W( E[N7], px);                                           \
154                     E[N2] = ALPHA_BLEND_64_W( E[N2], px);                                           \
155                     E[N8] = px;                                                                     \
156                 } else { /* diagonal */                                                             \
157                     E[N8] = ALPHA_BLEND_224_W(E[N8], px);                                           \
158                     E[N5] = ALPHA_BLEND_32_W( E[N5], px);                                           \
159                     E[N7] = ALPHA_BLEND_32_W( E[N7], px);                                           \
160                 }                                                                                   \
161             } else {                                                                                \
162                 E[N8] = ALPHA_BLEND_128_W(E[N8], px);                                               \
163             }                                                                                       \
164         }                                                                                           \
165     }                                                                                               \
166 } while (0)
167 
168 #define FILT4(PE, PI, PH, PF, PG, PC, PD, PB, PA, G5, C4, G0, D0, C1, B1, F4, I4, H5, I5, A0, A1,   \
169               N15, N14, N11, N3, N7, N10, N13, N12, N9, N6, N2, N1, N5, N8, N4, N0) do {            \
170     if (PE != PH && PE != PF) {                                                                     \
171         const unsigned e = df(PE,PC) + df(PE,PG) + df(PI,H5) + df(PI,F4) + (df(PH,PF)<<2);          \
172         const unsigned i = df(PH,PD) + df(PH,I5) + df(PF,I4) + df(PF,PB) + (df(PE,PI)<<2);          \
173         if (e <= i) {                                                                               \
174             const unsigned px = df(PE,PF) <= df(PE,PH) ? PF : PH;                                   \
175             if (e < i && (!eq(PF,PB) && !eq(PH,PD) || eq(PE,PI)                                     \
176                           && (!eq(PF,I4) && !eq(PH,I5))                                             \
177                           || eq(PE,PG) || eq(PE,PC))) {                                             \
178                 const unsigned ke = df(PF,PG);                                                      \
179                 const unsigned ki = df(PH,PC);                                                      \
180                 const int left    = ke<<1 <= ki && PE != PG && PD != PG;                            \
181                 const int up      = ke >= ki<<1 && PE != PC && PB != PC;                            \
182                 if (left && up) {                                                                   \
183                     E[N13] = ALPHA_BLEND_192_W(E[N13], px);                                         \
184                     E[N12] = ALPHA_BLEND_64_W( E[N12], px);                                         \
185                     E[N15] = E[N14] = E[N11] = px;                                                  \
186                     E[N10] = E[N3]  = E[N12];                                                       \
187                     E[N7]  = E[N13];                                                                \
188                 } else if (left) {                                                                  \
189                     E[N11] = ALPHA_BLEND_192_W(E[N11], px);                                         \
190                     E[N13] = ALPHA_BLEND_192_W(E[N13], px);                                         \
191                     E[N10] = ALPHA_BLEND_64_W( E[N10], px);                                         \
192                     E[N12] = ALPHA_BLEND_64_W( E[N12], px);                                         \
193                     E[N14] = px;                                                                    \
194                     E[N15] = px;                                                                    \
195                 } else if (up) {                                                                    \
196                     E[N14] = ALPHA_BLEND_192_W(E[N14], px);                                         \
197                     E[N7 ] = ALPHA_BLEND_192_W(E[N7 ], px);                                         \
198                     E[N10] = ALPHA_BLEND_64_W( E[N10], px);                                         \
199                     E[N3 ] = ALPHA_BLEND_64_W( E[N3 ], px);                                         \
200                     E[N11] = px;                                                                    \
201                     E[N15] = px;                                                                    \
202                 } else { /* diagonal */                                                             \
203                     E[N11] = ALPHA_BLEND_128_W(E[N11], px);                                         \
204                     E[N14] = ALPHA_BLEND_128_W(E[N14], px);                                         \
205                     E[N15] = px;                                                                    \
206                 }                                                                                   \
207             } else {                                                                                \
208                 E[N15] = ALPHA_BLEND_128_W(E[N15], px);                                             \
209             }                                                                                       \
210         }                                                                                           \
211     }                                                                                               \
212 } while (0)
213 
xbr_filter(const ThreadData * td,int jobnr,int nb_jobs,int n)214 static av_always_inline void xbr_filter(const ThreadData *td, int jobnr, int nb_jobs, int n)
215 {
216     int x, y;
217     const AVFrame *input = td->in;
218     AVFrame *output = td->out;
219     const uint32_t *r2y = td->rgbtoyuv;
220     const int slice_start = (input->height *  jobnr   ) / nb_jobs;
221     const int slice_end   = (input->height * (jobnr+1)) / nb_jobs;
222     const int nl = output->linesize[0] >> 2;
223     const int nl1 = nl + nl;
224     const int nl2 = nl1 + nl;
225 
226     for (y = slice_start; y < slice_end; y++) {
227 
228         uint32_t *E = (uint32_t *)(output->data[0] + y * output->linesize[0] * n);
229         const uint32_t *sa2 = (uint32_t *)(input->data[0] + y * input->linesize[0] - 8); /* center */
230         const uint32_t *sa1 = sa2 - (input->linesize[0]>>2); /* up x1 */
231         const uint32_t *sa0 = sa1 - (input->linesize[0]>>2); /* up x2 */
232         const uint32_t *sa3 = sa2 + (input->linesize[0]>>2); /* down x1 */
233         const uint32_t *sa4 = sa3 + (input->linesize[0]>>2); /* down x2 */
234 
235         if (y <= 1) {
236             sa0 = sa1;
237             if (y == 0) {
238                 sa0 = sa1 = sa2;
239             }
240         }
241 
242         if (y >= input->height - 2) {
243             sa4 = sa3;
244             if (y == input->height - 1) {
245                 sa4 = sa3 = sa2;
246             }
247         }
248 
249         for (x = 0; x < input->width; x++) {
250             const uint32_t B1 = sa0[2];
251             const uint32_t PB = sa1[2];
252             const uint32_t PE = sa2[2];
253             const uint32_t PH = sa3[2];
254             const uint32_t H5 = sa4[2];
255 
256             const int pprev = 2 - (x > 0);
257             const uint32_t A1 = sa0[pprev];
258             const uint32_t PA = sa1[pprev];
259             const uint32_t PD = sa2[pprev];
260             const uint32_t PG = sa3[pprev];
261             const uint32_t G5 = sa4[pprev];
262 
263             const int pprev2 = pprev - (x > 1);
264             const uint32_t A0 = sa1[pprev2];
265             const uint32_t D0 = sa2[pprev2];
266             const uint32_t G0 = sa3[pprev2];
267 
268             const int pnext = 3 - (x == input->width - 1);
269             const uint32_t C1 = sa0[pnext];
270             const uint32_t PC = sa1[pnext];
271             const uint32_t PF = sa2[pnext];
272             const uint32_t PI = sa3[pnext];
273             const uint32_t I5 = sa4[pnext];
274 
275             const int pnext2 = pnext + 1 - (x >= input->width - 2);
276             const uint32_t C4 = sa1[pnext2];
277             const uint32_t F4 = sa2[pnext2];
278             const uint32_t I4 = sa3[pnext2];
279 
280             if (n == 2) {
281                 E[0]  = E[1]      =     // 0, 1
282                 E[nl] = E[nl + 1] = PE; // 2, 3
283 
284                 FILT2(PE, PI, PH, PF, PG, PC, PD, PB, PA, G5, C4, G0, D0, C1, B1, F4, I4, H5, I5, A0, A1, 0, 1, nl, nl+1);
285                 FILT2(PE, PC, PF, PB, PI, PA, PH, PD, PG, I4, A1, I5, H5, A0, D0, B1, C1, F4, C4, G5, G0, nl, 0, nl+1, 1);
286                 FILT2(PE, PA, PB, PD, PC, PG, PF, PH, PI, C1, G0, C4, F4, G5, H5, D0, A0, B1, A1, I4, I5, nl+1, nl, 1, 0);
287                 FILT2(PE, PG, PD, PH, PA, PI, PB, PF, PC, A0, I5, A1, B1, I4, F4, H5, G5, D0, G0, C1, C4, 1, nl+1, 0, nl);
288             } else if (n == 3) {
289                 E[0]   = E[1]     = E[2]     =     // 0, 1, 2
290                 E[nl]  = E[nl+1]  = E[nl+2]  =     // 3, 4, 5
291                 E[nl1] = E[nl1+1] = E[nl1+2] = PE; // 6, 7, 8
292 
293                 FILT3(PE, PI, PH, PF, PG, PC, PD, PB, PA, G5, C4, G0, D0, C1, B1, F4, I4, H5, I5, A0, A1, 0, 1, 2, nl, nl+1, nl+2, nl1, nl1+1, nl1+2);
294                 FILT3(PE, PC, PF, PB, PI, PA, PH, PD, PG, I4, A1, I5, H5, A0, D0, B1, C1, F4, C4, G5, G0, nl1, nl, 0, nl1+1, nl+1, 1, nl1+2, nl+2, 2);
295                 FILT3(PE, PA, PB, PD, PC, PG, PF, PH, PI, C1, G0, C4, F4, G5, H5, D0, A0, B1, A1, I4, I5, nl1+2, nl1+1, nl1, nl+2, nl+1, nl, 2, 1, 0);
296                 FILT3(PE, PG, PD, PH, PA, PI, PB, PF, PC, A0, I5, A1, B1, I4, F4, H5, G5, D0, G0, C1, C4, 2, nl+2, nl1+2, 1, nl+1, nl1+1, 0, nl, nl1);
297             } else if (n == 4) {
298                 E[0]   = E[1]     = E[2]     = E[3]     =     //  0,  1,  2,  3
299                 E[nl]  = E[nl+1]  = E[nl+2]  = E[nl+3]  =     //  4,  5,  6,  7
300                 E[nl1] = E[nl1+1] = E[nl1+2] = E[nl1+3] =     //  8,  9, 10, 11
301                 E[nl2] = E[nl2+1] = E[nl2+2] = E[nl2+3] = PE; // 12, 13, 14, 15
302 
303                 FILT4(PE, PI, PH, PF, PG, PC, PD, PB, PA, G5, C4, G0, D0, C1, B1, F4, I4, H5, I5, A0, A1, nl2+3, nl2+2, nl1+3, 3, nl+3, nl1+2, nl2+1, nl2, nl1+1, nl+2, 2, 1, nl+1, nl1, nl, 0);
304                 FILT4(PE, PC, PF, PB, PI, PA, PH, PD, PG, I4, A1, I5, H5, A0, D0, B1, C1, F4, C4, G5, G0, 3, nl+3, 2, 0, 1, nl+2, nl1+3, nl2+3, nl1+2, nl+1, nl, nl1, nl1+1, nl2+2, nl2+1, nl2);
305                 FILT4(PE, PA, PB, PD, PC, PG, PF, PH, PI, C1, G0, C4, F4, G5, H5, D0, A0, B1, A1, I4, I5, 0, 1, nl, nl2, nl1, nl+1, 2, 3, nl+2, nl1+1, nl2+1, nl2+2, nl1+2, nl+3, nl1+3, nl2+3);
306                 FILT4(PE, PG, PD, PH, PA, PI, PB, PF, PC, A0, I5, A1, B1, I4, F4, H5, G5, D0, G0, C1, C4, nl2, nl1, nl2+1, nl2+3, nl2+2, nl1+1, nl, 0, nl+1, nl1+2, nl1+3, nl+3, nl+2, 1, 2, 3);
307             }
308 
309             sa0 += 1;
310             sa1 += 1;
311             sa2 += 1;
312             sa3 += 1;
313             sa4 += 1;
314 
315             E += n;
316         }
317     }
318 }
319 
320 #define XBR_FUNC(size) \
321 static int xbr##size##x(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs) \
322 { \
323     xbr_filter(arg, jobnr, nb_jobs, size); \
324     return 0; \
325 }
326 
327 XBR_FUNC(2)
328 XBR_FUNC(3)
329 XBR_FUNC(4)
330 
331 
config_output(AVFilterLink * outlink)332 static int config_output(AVFilterLink *outlink)
333 {
334     AVFilterContext *ctx = outlink->src;
335     XBRContext *s = ctx->priv;
336     AVFilterLink *inlink = ctx->inputs[0];
337 
338     outlink->w = inlink->w * s->n;
339     outlink->h = inlink->h * s->n;
340     return 0;
341 }
342 
filter_frame(AVFilterLink * inlink,AVFrame * in)343 static int filter_frame(AVFilterLink *inlink, AVFrame *in)
344 {
345     AVFilterContext *ctx = inlink->dst;
346     AVFilterLink *outlink = ctx->outputs[0];
347     XBRContext *s = ctx->priv;
348     ThreadData td;
349 
350     AVFrame *out = ff_get_video_buffer(outlink, outlink->w, outlink->h);
351     if (!out) {
352         av_frame_free(&in);
353         return AVERROR(ENOMEM);
354     }
355 
356     av_frame_copy_props(out, in);
357 
358     td.in = in;
359     td.out = out;
360     td.rgbtoyuv = s->rgbtoyuv;
361     ff_filter_execute(ctx, s->func, &td, NULL,
362                       FFMIN(inlink->h, ff_filter_get_nb_threads(ctx)));
363 
364     out->width  = outlink->w;
365     out->height = outlink->h;
366 
367     av_frame_free(&in);
368     return ff_filter_frame(outlink, out);
369 }
370 
init(AVFilterContext * ctx)371 static av_cold int init(AVFilterContext *ctx)
372 {
373     XBRContext *s = ctx->priv;
374     static const xbrfunc_t xbrfuncs[] = {xbr2x, xbr3x, xbr4x};
375 
376     uint32_t c;
377     int bg, rg, g;
378 
379     for (bg = -255; bg < 256; bg++) {
380         for (rg = -255; rg < 256; rg++) {
381             const uint32_t u = (uint32_t)((-169*rg + 500*bg)/1000) + 128;
382             const uint32_t v = (uint32_t)(( 500*rg -  81*bg)/1000) + 128;
383             int startg = FFMAX3(-bg, -rg, 0);
384             int endg = FFMIN3(255-bg, 255-rg, 255);
385             uint32_t y = (uint32_t)(( 299*rg + 1000*startg + 114*bg)/1000);
386             c = bg + rg * (1 << 16) + 0x010101 * startg;
387             for (g = startg; g <= endg; g++) {
388                 s->rgbtoyuv[c] = ((y++) << 16) + (u << 8) + v;
389                 c+= 0x010101;
390             }
391         }
392     }
393 
394     s->func = xbrfuncs[s->n - 2];
395     return 0;
396 }
397 
398 static const AVFilterPad xbr_inputs[] = {
399     {
400         .name         = "default",
401         .type         = AVMEDIA_TYPE_VIDEO,
402         .filter_frame = filter_frame,
403     },
404 };
405 
406 static const AVFilterPad xbr_outputs[] = {
407     {
408         .name         = "default",
409         .type         = AVMEDIA_TYPE_VIDEO,
410         .config_props = config_output,
411     },
412 };
413 
414 const AVFilter ff_vf_xbr = {
415     .name          = "xbr",
416     .description   = NULL_IF_CONFIG_SMALL("Scale the input using xBR algorithm."),
417     FILTER_INPUTS(xbr_inputs),
418     FILTER_OUTPUTS(xbr_outputs),
419     FILTER_SINGLE_PIXFMT(AV_PIX_FMT_0RGB32),
420     .priv_size     = sizeof(XBRContext),
421     .priv_class    = &xbr_class,
422     .init          = init,
423     .flags         = AVFILTER_FLAG_SLICE_THREADS,
424 };
425