forked from FFmpeg/FFmpeg
-
Notifications
You must be signed in to change notification settings - Fork 0
/
Copy pathvf_guided.c
501 lines (443 loc) · 21.2 KB
/
vf_guided.c
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
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
/*
* Copyright (c) 2021 Xuewei Meng
*
* 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/imgutils.h"
#include "libavutil/opt.h"
#include "libavutil/pixdesc.h"
#include "avfilter.h"
#include "filters.h"
#include "framesync.h"
#include "internal.h"
#include "video.h"
enum FilterModes {
BASIC,
FAST,
NB_MODES,
};
enum GuidanceModes {
OFF,
ON,
NB_GUIDANCE_MODES,
};
typedef struct GuidedContext {
const AVClass *class;
FFFrameSync fs;
int radius;
float eps;
int mode;
int sub;
int guidance;
int planes;
int width;
int height;
int nb_planes;
int depth;
int planewidth[4];
int planeheight[4];
float *I;
float *II;
float *P;
float *IP;
float *meanI;
float *meanII;
float *meanP;
float *meanIP;
float *A;
float *B;
float *meanA;
float *meanB;
int (*box_slice)(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs);
} GuidedContext;
#define OFFSET(x) offsetof(GuidedContext, x)
#define TFLAGS AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_RUNTIME_PARAM
#define FLAGS AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_FILTERING_PARAM
static const AVOption guided_options[] = {
{ "radius", "set the box radius", OFFSET(radius), AV_OPT_TYPE_INT, {.i64 = 3 }, 1, 20, TFLAGS },
{ "eps", "set the regularization parameter (with square)", OFFSET(eps), AV_OPT_TYPE_FLOAT, {.dbl = 0.01 }, 0.0, 1, TFLAGS },
{ "mode", "set filtering mode (0: basic mode; 1: fast mode)", OFFSET(mode), AV_OPT_TYPE_INT, {.i64 = BASIC}, BASIC, NB_MODES - 1, TFLAGS, .unit = "mode" },
{ "basic", "basic guided filter", 0, AV_OPT_TYPE_CONST, {.i64 = BASIC}, 0, 0, TFLAGS, .unit = "mode" },
{ "fast", "fast guided filter", 0, AV_OPT_TYPE_CONST, {.i64 = FAST }, 0, 0, TFLAGS, .unit = "mode" },
{ "sub", "subsampling ratio for fast mode", OFFSET(sub), AV_OPT_TYPE_INT, {.i64 = 4 }, 2, 64, TFLAGS },
{ "guidance", "set guidance mode (0: off mode; 1: on mode)", OFFSET(guidance), AV_OPT_TYPE_INT, {.i64 = OFF }, OFF, NB_GUIDANCE_MODES - 1, FLAGS, .unit = "guidance" },
{ "off", "only one input is enabled", 0, AV_OPT_TYPE_CONST, {.i64 = OFF }, 0, 0, FLAGS, .unit = "guidance" },
{ "on", "two inputs are required", 0, AV_OPT_TYPE_CONST, {.i64 = ON }, 0, 0, FLAGS, .unit = "guidance" },
{ "planes", "set planes to filter", OFFSET(planes), AV_OPT_TYPE_INT, {.i64 = 1 }, 0, 0xF, TFLAGS },
{ NULL }
};
AVFILTER_DEFINE_CLASS(guided);
typedef struct ThreadData {
int width;
int height;
float *src;
float *dst;
int srcStride;
int dstStride;
} ThreadData;
static int box_slice(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
{
GuidedContext *s = ctx->priv;
ThreadData *t = arg;
const int width = t->width;
const int height = t->height;
const int src_stride = t->srcStride;
const int dst_stride = t->dstStride;
const int slice_start = (height * jobnr) / nb_jobs;
const int slice_end = (height * (jobnr + 1)) / nb_jobs;
const int radius = s->radius;
const float *src = t->src;
float *dst = t->dst;
int w;
int numPix;
w = (radius << 1) + 1;
numPix = w * w;
for (int i = slice_start;i < slice_end;i++) {
for (int j = 0;j < width;j++) {
float temp = 0.0;
for (int row = -radius;row <= radius;row++) {
for (int col = -radius;col <= radius;col++) {
int x = i + row;
int y = j + col;
x = (x < 0) ? 0 : (x >= height ? height - 1 : x);
y = (y < 0) ? 0 : (y >= width ? width - 1 : y);
temp += src[x * src_stride + y];
}
}
dst[i * dst_stride + j] = temp / numPix;
}
}
return 0;
}
static const enum AVPixelFormat pix_fmts[] = {
AV_PIX_FMT_YUVA444P, AV_PIX_FMT_YUV444P, AV_PIX_FMT_YUV440P,
AV_PIX_FMT_YUVJ444P, AV_PIX_FMT_YUVJ440P,
AV_PIX_FMT_YUVA422P, AV_PIX_FMT_YUV422P, AV_PIX_FMT_YUVA420P, AV_PIX_FMT_YUV420P,
AV_PIX_FMT_YUVJ422P, AV_PIX_FMT_YUVJ420P,
AV_PIX_FMT_YUVJ411P, AV_PIX_FMT_YUV411P, AV_PIX_FMT_YUV410P,
AV_PIX_FMT_YUV420P9, AV_PIX_FMT_YUV422P9, AV_PIX_FMT_YUV444P9,
AV_PIX_FMT_YUV420P10, AV_PIX_FMT_YUV422P10, AV_PIX_FMT_YUV444P10,
AV_PIX_FMT_YUV420P12, AV_PIX_FMT_YUV422P12, AV_PIX_FMT_YUV444P12, AV_PIX_FMT_YUV440P12,
AV_PIX_FMT_YUV420P14, AV_PIX_FMT_YUV422P14, AV_PIX_FMT_YUV444P14,
AV_PIX_FMT_YUV420P16, AV_PIX_FMT_YUV422P16, AV_PIX_FMT_YUV444P16,
AV_PIX_FMT_YUVA420P9, AV_PIX_FMT_YUVA422P9, AV_PIX_FMT_YUVA444P9,
AV_PIX_FMT_YUVA420P10, AV_PIX_FMT_YUVA422P10, AV_PIX_FMT_YUVA444P10,
AV_PIX_FMT_YUVA420P16, AV_PIX_FMT_YUVA422P16, AV_PIX_FMT_YUVA444P16,
AV_PIX_FMT_GBRP, AV_PIX_FMT_GBRP9, AV_PIX_FMT_GBRP10,
AV_PIX_FMT_GBRP12, AV_PIX_FMT_GBRP14, AV_PIX_FMT_GBRP16,
AV_PIX_FMT_GBRAP, AV_PIX_FMT_GBRAP10, AV_PIX_FMT_GBRAP12, AV_PIX_FMT_GBRAP16,
AV_PIX_FMT_GRAY8, AV_PIX_FMT_GRAY9, AV_PIX_FMT_GRAY10, AV_PIX_FMT_GRAY12, AV_PIX_FMT_GRAY14, AV_PIX_FMT_GRAY16,
AV_PIX_FMT_NONE
};
static int config_input(AVFilterLink *inlink)
{
AVFilterContext *ctx = inlink->dst;
GuidedContext *s = ctx->priv;
const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format);
if (s->mode == BASIC) {
s->sub = 1;
} else if (s->mode == FAST) {
if (s->radius >= s->sub)
s->radius = s->radius / s->sub;
else {
s->radius = 1;
}
}
s->depth = desc->comp[0].depth;
s->width = ctx->inputs[0]->w;
s->height = ctx->inputs[0]->h;
s->planewidth[1] = s->planewidth[2] = AV_CEIL_RSHIFT(inlink->w, desc->log2_chroma_w);
s->planewidth[0] = s->planewidth[3] = inlink->w;
s->planeheight[1] = s->planeheight[2] = AV_CEIL_RSHIFT(inlink->h, desc->log2_chroma_h);
s->planeheight[0] = s->planeheight[3] = inlink->h;
s->nb_planes = av_pix_fmt_count_planes(inlink->format);
s->box_slice = box_slice;
return 0;
}
#define GUIDED(type, name) \
static int guided_##name(AVFilterContext *ctx, GuidedContext *s, \
const uint8_t *ssrc, const uint8_t *ssrcRef, \
uint8_t *ddst, int radius, float eps, int width, int height, \
int src_stride, int src_ref_stride, int dst_stride, \
float maxval) \
{ \
int ret = 0; \
type *dst = (type *)ddst; \
const type *src = (const type *)ssrc; \
const type *srcRef = (const type *)ssrcRef; \
\
int sub = s->sub; \
int h = (height % sub) == 0 ? height / sub : height / sub + 1; \
int w = (width % sub) == 0 ? width / sub : width / sub + 1; \
\
ThreadData t; \
const int nb_threads = ff_filter_get_nb_threads(ctx); \
float *I = s->I; \
float *II = s->II; \
float *P = s->P; \
float *IP = s->IP; \
float *meanI = s->meanI; \
float *meanII = s->meanII; \
float *meanP = s->meanP; \
float *meanIP = s->meanIP; \
float *A = s->A; \
float *B = s->B; \
float *meanA = s->meanA; \
float *meanB = s->meanB; \
\
for (int i = 0;i < h;i++) { \
for (int j = 0;j < w;j++) { \
int x = i * w + j; \
I[x] = src[(i * src_stride + j) * sub] / maxval; \
II[x] = I[x] * I[x]; \
P[x] = srcRef[(i * src_ref_stride + j) * sub] / maxval; \
IP[x] = I[x] * P[x]; \
} \
} \
\
t.width = w; \
t.height = h; \
t.srcStride = w; \
t.dstStride = w; \
t.src = I; \
t.dst = meanI; \
ff_filter_execute(ctx, s->box_slice, &t, NULL, FFMIN(h, nb_threads)); \
t.src = II; \
t.dst = meanII; \
ff_filter_execute(ctx, s->box_slice, &t, NULL, FFMIN(h, nb_threads)); \
t.src = P; \
t.dst = meanP; \
ff_filter_execute(ctx, s->box_slice, &t, NULL, FFMIN(h, nb_threads)); \
t.src = IP; \
t.dst = meanIP; \
ff_filter_execute(ctx, s->box_slice, &t, NULL, FFMIN(h, nb_threads)); \
\
for (int i = 0;i < h;i++) { \
for (int j = 0;j < w;j++) { \
int x = i * w + j; \
float varI = meanII[x] - (meanI[x] * meanI[x]); \
float covIP = meanIP[x] - (meanI[x] * meanP[x]); \
A[x] = covIP / (varI + eps); \
B[x] = meanP[x] - A[x] * meanI[x]; \
} \
} \
\
t.src = A; \
t.dst = meanA; \
ff_filter_execute(ctx, s->box_slice, &t, NULL, FFMIN(h, nb_threads)); \
t.src = B; \
t.dst = meanB; \
ff_filter_execute(ctx, s->box_slice, &t, NULL, FFMIN(h, nb_threads)); \
\
for (int i = 0;i < height;i++) { \
for (int j = 0;j < width;j++) { \
int x = i / sub * w + j / sub; \
dst[i * dst_stride + j] = meanA[x] * src[i * src_stride + j] + \
meanB[x] * maxval; \
} \
} \
\
return ret; \
}
GUIDED(uint8_t, byte)
GUIDED(uint16_t, word)
static int filter_frame(AVFilterContext *ctx, AVFrame **out, AVFrame *in, AVFrame *ref)
{
GuidedContext *s = ctx->priv;
AVFilterLink *outlink = ctx->outputs[0];
*out = ff_get_video_buffer(outlink, outlink->w, outlink->h);
if (!*out)
return AVERROR(ENOMEM);
av_frame_copy_props(*out, in);
for (int plane = 0; plane < s->nb_planes; plane++) {
if (!(s->planes & (1 << plane))) {
av_image_copy_plane((*out)->data[plane], (*out)->linesize[plane],
in->data[plane], in->linesize[plane],
s->planewidth[plane] * ((s->depth + 7) / 8), s->planeheight[plane]);
continue;
}
if (s->depth <= 8)
guided_byte(ctx, s, in->data[plane], ref->data[plane], (*out)->data[plane], s->radius, s->eps,
s->planewidth[plane], s->planeheight[plane],
in->linesize[plane], ref->linesize[plane], (*out)->linesize[plane], (1 << s->depth) - 1.f);
else
guided_word(ctx, s, in->data[plane], ref->data[plane], (*out)->data[plane], s->radius, s->eps,
s->planewidth[plane], s->planeheight[plane],
in->linesize[plane] / 2, ref->linesize[plane] / 2, (*out)->linesize[plane] / 2, (1 << s->depth) - 1.f);
}
return 0;
}
static int process_frame(FFFrameSync *fs)
{
AVFilterContext *ctx = fs->parent;
AVFilterLink *outlink = ctx->outputs[0];
AVFrame *out_frame = NULL, *main_frame = NULL, *ref_frame = NULL;
int ret;
ret = ff_framesync_dualinput_get(fs, &main_frame, &ref_frame);
if (ret < 0)
return ret;
if (ctx->is_disabled)
return ff_filter_frame(outlink, main_frame);
ret = filter_frame(ctx, &out_frame, main_frame, ref_frame);
if (ret < 0)
return ret;
av_frame_free(&main_frame);
return ff_filter_frame(outlink, out_frame);
}
static int config_output(AVFilterLink *outlink)
{
AVFilterContext *ctx = outlink->src;
GuidedContext *s = ctx->priv;
AVFilterLink *mainlink = ctx->inputs[0];
FFFrameSyncIn *in;
int w, h, ret;
if (s->guidance == ON) {
if (ctx->inputs[0]->w != ctx->inputs[1]->w ||
ctx->inputs[0]->h != ctx->inputs[1]->h) {
av_log(ctx, AV_LOG_ERROR, "Width and height of input videos must be same.\n");
return AVERROR(EINVAL);
}
}
outlink->w = w = mainlink->w;
outlink->h = h = mainlink->h;
outlink->time_base = mainlink->time_base;
outlink->sample_aspect_ratio = mainlink->sample_aspect_ratio;
outlink->frame_rate = mainlink->frame_rate;
s->I = av_calloc(w * h, sizeof(*s->I));
s->II = av_calloc(w * h, sizeof(*s->II));
s->P = av_calloc(w * h, sizeof(*s->P));
s->IP = av_calloc(w * h, sizeof(*s->IP));
s->meanI = av_calloc(w * h, sizeof(*s->meanI));
s->meanII = av_calloc(w * h, sizeof(*s->meanII));
s->meanP = av_calloc(w * h, sizeof(*s->meanP));
s->meanIP = av_calloc(w * h, sizeof(*s->meanIP));
s->A = av_calloc(w * h, sizeof(*s->A));
s->B = av_calloc(w * h, sizeof(*s->B));
s->meanA = av_calloc(w * h, sizeof(*s->meanA));
s->meanB = av_calloc(w * h, sizeof(*s->meanA));
if (!s->I || !s->II || !s->P || !s->IP || !s->meanI || !s->meanII || !s->meanP ||
!s->meanIP || !s->A || !s->B || !s->meanA || !s->meanB)
return AVERROR(ENOMEM);
if (s->guidance == OFF)
return 0;
if ((ret = ff_framesync_init(&s->fs, ctx, 2)) < 0)
return ret;
outlink->time_base = s->fs.time_base;
in = s->fs.in;
in[0].time_base = mainlink->time_base;
in[1].time_base = ctx->inputs[1]->time_base;
in[0].sync = 2;
in[0].before = EXT_INFINITY;
in[0].after = EXT_INFINITY;
in[1].sync = 1;
in[1].before = EXT_INFINITY;
in[1].after = EXT_INFINITY;
s->fs.opaque = s;
s->fs.on_event = process_frame;
return ff_framesync_configure(&s->fs);
}
static int activate(AVFilterContext *ctx)
{
GuidedContext *s = ctx->priv;
AVFilterLink *outlink = ctx->outputs[0];
AVFilterLink *inlink = ctx->inputs[0];
AVFrame *frame = NULL;
AVFrame *out = NULL;
int ret, status;
int64_t pts;
if (s->guidance)
return ff_framesync_activate(&s->fs);
FF_FILTER_FORWARD_STATUS_BACK(outlink, inlink);
if ((ret = ff_inlink_consume_frame(inlink, &frame)) > 0) {
if (ctx->is_disabled)
return ff_filter_frame(outlink, frame);
ret = filter_frame(ctx, &out, frame, frame);
av_frame_free(&frame);
if (ret < 0)
return ret;
ret = ff_filter_frame(outlink, out);
}
if (ret < 0)
return ret;
if (ff_inlink_acknowledge_status(inlink, &status, &pts)) {
ff_outlink_set_status(outlink, status, pts);
return 0;
}
if (ff_outlink_frame_wanted(outlink))
ff_inlink_request_frame(inlink);
return 0;
}
static av_cold int init(AVFilterContext *ctx)
{
GuidedContext *s = ctx->priv;
AVFilterPad pad = { 0 };
int ret;
pad.type = AVMEDIA_TYPE_VIDEO;
pad.name = "source";
pad.config_props = config_input;
if ((ret = ff_append_inpad(ctx, &pad)) < 0)
return ret;
if (s->guidance == ON) {
pad.type = AVMEDIA_TYPE_VIDEO;
pad.name = "guidance";
pad.config_props = NULL;
if ((ret = ff_append_inpad(ctx, &pad)) < 0)
return ret;
}
return 0;
}
static av_cold void uninit(AVFilterContext *ctx)
{
GuidedContext *s = ctx->priv;
if (s->guidance == ON)
ff_framesync_uninit(&s->fs);
av_freep(&s->I);
av_freep(&s->II);
av_freep(&s->P);
av_freep(&s->IP);
av_freep(&s->meanI);
av_freep(&s->meanII);
av_freep(&s->meanP);
av_freep(&s->meanIP);
av_freep(&s->A);
av_freep(&s->B);
av_freep(&s->meanA);
av_freep(&s->meanB);
return;
}
static const AVFilterPad guided_outputs[] = {
{
.name = "default",
.type = AVMEDIA_TYPE_VIDEO,
.config_props = config_output,
},
};
const AVFilter ff_vf_guided = {
.name = "guided",
.description = NULL_IF_CONFIG_SMALL("Apply Guided filter."),
.init = init,
.uninit = uninit,
.priv_size = sizeof(GuidedContext),
.priv_class = &guided_class,
.activate = activate,
.inputs = NULL,
FILTER_OUTPUTS(guided_outputs),
FILTER_PIXFMTS_ARRAY(pix_fmts),
.flags = AVFILTER_FLAG_DYNAMIC_INPUTS | AVFILTER_FLAG_SLICE_THREADS |
AVFILTER_FLAG_SUPPORT_TIMELINE_INTERNAL,
.process_command = ff_filter_process_command,
};