FFmpeg coverage

Directory: ../../../ffmpeg/
File: src/libavfilter/vf_cropdetect.c
Date: 2026-10-16 04:22:46
Exec Total Coverage
Lines: 170 215 79.1%
Functions: 7 8 87.5%
Branches: 268 320 83.8%
Line Branch Exec Source
1 /*
2 * Copyright (c) 2002 A'rpi
3 * This file is part of FFmpeg.
4 *
5 * FFmpeg is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 2 of the License, or
8 * (at your option) any later version.
9 *
10 * FFmpeg is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
14 *
15 * You should have received a copy of the GNU General Public License along
16 * with FFmpeg; if not, write to the Free Software Foundation, Inc.,
17 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
18 */
19
20 /**
21 * @file
22 * border detection filter
23 * Ported from MPlayer libmpcodecs/vf_cropdetect.c.
24 */
25
26 #include "libavutil/imgutils.h"
27 #include "libavutil/internal.h"
28 #include "libavutil/mem.h"
29 #include "libavutil/opt.h"
30 #include "libavutil/motion_vector.h"
31 #include "libavutil/qsort.h"
32
33 #include "avfilter.h"
34 #include "filters.h"
35 #include "video.h"
36 #include "edge_common.h"
37
38 typedef struct CropDetectContext {
39 const AVClass *class;
40 int x1, y1, x2, y2;
41 float limit;
42 float limit_upscaled;
43 int round;
44 int skip;
45 int reset_count;
46 int frame_nb;
47 int max_pixsteps[4];
48 int max_outliers;
49 int mode;
50 int window_size;
51 int mv_threshold;
52 int bitdepth;
53 float low, high;
54 uint8_t low_u8, high_u8;
55 uint8_t *filterbuf;
56 uint8_t *tmpbuf;
57 uint16_t *gradients;
58 char *directions;
59 int *bboxes[4];
60 } CropDetectContext;
61
62 static const enum AVPixelFormat pix_fmts[] = {
63 AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUVJ420P,
64 AV_PIX_FMT_YUV422P, AV_PIX_FMT_YUVJ422P,
65 AV_PIX_FMT_YUV444P, AV_PIX_FMT_YUVJ444P,
66 AV_PIX_FMT_YUV411P, AV_PIX_FMT_GRAY8,
67 AV_PIX_FMT_YUV440P, AV_PIX_FMT_YUV410P,
68 AV_PIX_FMT_YUV420P9 , AV_PIX_FMT_YUV422P9 , AV_PIX_FMT_YUV444P9,
69 AV_PIX_FMT_YUV420P10, AV_PIX_FMT_YUV422P10, AV_PIX_FMT_YUV444P10,
70 AV_PIX_FMT_YUV420P12, AV_PIX_FMT_YUV422P12, AV_PIX_FMT_YUV444P12,
71 AV_PIX_FMT_YUV420P14, AV_PIX_FMT_YUV422P14, AV_PIX_FMT_YUV444P14,
72 AV_PIX_FMT_YUV420P16, AV_PIX_FMT_YUV422P16, AV_PIX_FMT_YUV444P16,
73 AV_PIX_FMT_NV12, AV_PIX_FMT_NV21,
74 AV_PIX_FMT_RGB24, AV_PIX_FMT_BGR24,
75 AV_PIX_FMT_RGBA, AV_PIX_FMT_BGRA,
76 AV_PIX_FMT_NONE
77 };
78
79 enum CropMode {
80 MODE_BLACK,
81 MODE_MV_EDGES,
82 MODE_NB
83 };
84
85 504 static int comp(const int *a,const int *b)
86 {
87 504 return FFDIFFSIGN(*a, *b);
88 }
89
90 3676 static int checkline(void *ctx, const unsigned char *src, int stride, int len, int bpp)
91 {
92 3676 int total = 0;
93 3676 int div = len;
94 3676 const uint16_t *src16 = (const uint16_t *)src;
95
96
1/4
✓ Branch 0 taken 3676 times.
✗ Branch 1 not taken.
✗ Branch 2 not taken.
✗ Branch 3 not taken.
 3676 switch (bpp) {
97 3676 case 1:
98
2/2
✓ Branch 0 taken 330600 times.
✓ Branch 1 taken 3676 times.
 334276 while (len >= 8) {
99 330600 total += src[ 0] + src[ stride] + src[2*stride] + src[3*stride]
100 330600 + src[4*stride] + src[5*stride] + src[6*stride] + src[7*stride];
101 330600 src += 8*stride;
102 330600 len -= 8;
103 }
104
2/2
✓ Branch 0 taken 48 times.
✓ Branch 1 taken 3676 times.
 3724 while (--len >= 0) {
105 48 total += src[0];
106 48 src += stride;
107 }
108 3676 break;
109 ✗ case 2:
110 ✗ stride >>= 1;
111 ✗ while (len >= 8) {
112 ✗ total += src16[ 0] + src16[ stride] + src16[2*stride] + src16[3*stride]
113 ✗ + src16[4*stride] + src16[5*stride] + src16[6*stride] + src16[7*stride];
114 ✗ src16 += 8*stride;
115 ✗ len -= 8;
116 }
117 ✗ while (--len >= 0) {
118 ✗ total += src16[0];
119 ✗ src16 += stride;
120 }
121 ✗ break;
122 ✗ case 3:
123 case 4:
124 ✗ while (len >= 4) {
125 ✗ total += src[0] + src[1 ] + src[2 ]
126 ✗ + src[ stride] + src[1+ stride] + src[2+ stride]
127 ✗ + src[2*stride] + src[1+2*stride] + src[2+2*stride]
128 ✗ + src[3*stride] + src[1+3*stride] + src[2+3*stride];
129 ✗ src += 4*stride;
130 ✗ len -= 4;
131 }
132 ✗ while (--len >= 0) {
133 ✗ total += src[0] + src[1] + src[2];
134 ✗ src += stride;
135 }
136 ✗ div *= 3;
137 ✗ break;
138 }
139 3676 total /= div;
140
141 3676 av_log(ctx, AV_LOG_DEBUG, "total:%d\n", total);
142 3676 return total;
143 }
144
145 2991 static int checkline_edge(void *ctx, const unsigned char *src, int stride, int len)
146 {
147
2/2
✓ Branch 0 taken 452808 times.
✓ Branch 1 taken 115 times.
 452923 while (--len >= 0) {
148
2/2
✓ Branch 0 taken 2876 times.
✓ Branch 1 taken 449932 times.
 452808 if (src[0]) return 0;
149 449932 src += stride;
150 }
151
152 115 return 1;
153 }
154
155 3 static av_cold int init(AVFilterContext *ctx)
156 {
157 3 CropDetectContext *s = ctx->priv;
158
159 3 s->frame_nb = -1 * s->skip;
160 3 s->low_u8 = s->low * 255. + .5;
161 3 s->high_u8 = s->high * 255. + .5;
162
163 3 av_log(ctx, AV_LOG_VERBOSE, "limit:%f round:%d skip:%d reset_count:%d\n",
164 3 s->limit, s->round, s->skip, s->reset_count);
165
166 3 return 0;
167 }
168
169 3 static av_cold void uninit(AVFilterContext *ctx)
170 {
171 3 CropDetectContext *s = ctx->priv;
172
173 3 av_freep(&s->tmpbuf);
174 3 av_freep(&s->filterbuf);
175 3 av_freep(&s->gradients);
176 3 av_freep(&s->directions);
177 3 av_freep(&s->bboxes[0]);
178 3 av_freep(&s->bboxes[1]);
179 3 av_freep(&s->bboxes[2]);
180 3 av_freep(&s->bboxes[3]);
181 3 }
182
183 3 static int config_input(AVFilterLink *inlink)
184 {
185 3 AVFilterContext *ctx = inlink->dst;
186 3 CropDetectContext *s = ctx->priv;
187 3 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format);
188 3 const int bufsize = inlink->w * inlink->h;
189
190 3 av_image_fill_max_pixsteps(s->max_pixsteps, NULL, desc);
191
192 3 s->bitdepth = desc->comp[0].depth;
193
194
1/2
✓ Branch 0 taken 3 times.
✗ Branch 1 not taken.
 3 if (s->limit < 1.0)
195 3 s->limit_upscaled = s->limit * ((1 << s->bitdepth) - 1);
196 else
197 ✗ s->limit_upscaled = s->limit;
198
199 3 s->x1 = inlink->w - 1;
200 3 s->y1 = inlink->h - 1;
201 3 s->x2 = 0;
202 3 s->y2 = 0;
203
204 3 s->window_size = FFMAX(s->reset_count, 15);
205 3 s->tmpbuf = av_malloc(bufsize);
206 3 s->filterbuf = av_malloc(bufsize * s->max_pixsteps[0]);
207 3 s->gradients = av_calloc(bufsize, sizeof(*s->gradients));
208 3 s->directions = av_malloc(bufsize);
209 3 s->bboxes[0] = av_malloc(s->window_size * sizeof(*s->bboxes[0]));
210 3 s->bboxes[1] = av_malloc(s->window_size * sizeof(*s->bboxes[1]));
211 3 s->bboxes[2] = av_malloc(s->window_size * sizeof(*s->bboxes[2]));
212 3 s->bboxes[3] = av_malloc(s->window_size * sizeof(*s->bboxes[3]));
213
214
4/8
✓ Branch 0 taken 3 times.
✗ Branch 1 not taken.
✓ Branch 2 taken 3 times.
✗ Branch 3 not taken.
✓ Branch 4 taken 3 times.
✗ Branch 5 not taken.
✓ Branch 6 taken 3 times.
✗ Branch 7 not taken.
 3 if (!s->tmpbuf || !s->filterbuf || !s->gradients || !s->directions ||
215
4/8
✓ Branch 0 taken 3 times.
✗ Branch 1 not taken.
✓ Branch 2 taken 3 times.
✗ Branch 3 not taken.
✓ Branch 4 taken 3 times.
✗ Branch 5 not taken.
✗ Branch 6 not taken.
✓ Branch 7 taken 3 times.
 3 !s->bboxes[0] || !s->bboxes[1] || !s->bboxes[2] || !s->bboxes[3])
216 ✗ return AVERROR(ENOMEM);
217
218 3 return 0;
219 }
220
221 #define SET_META(key, value) \
222 av_dict_set_int(metadata, key, value, 0)
223
224 52 static int filter_frame(AVFilterLink *inlink, AVFrame *frame)
225 {
226 52 AVFilterContext *ctx = inlink->dst;
227 52 CropDetectContext *s = ctx->priv;
228 52 int bpp = s->max_pixsteps[0];
229 int w, h, x, y, shrink_by, i;
230 AVDictionary **metadata;
231 int outliers, last_y;
232 52 int limit_upscaled = lrint(s->limit_upscaled);
233 char limit_str[22];
234
235 52 const int inw = inlink->w;
236 52 const int inh = inlink->h;
237 52 uint8_t *tmpbuf = s->tmpbuf;
238 52 uint8_t *filterbuf = s->filterbuf;
239 52 uint16_t *gradients = s->gradients;
240 52 int8_t *directions = s->directions;
241 52 const AVFrameSideData *sd = NULL;
242 int scan_w, scan_h, bboff;
243
244 52 void (*sobel)(int w, int h, uint16_t *dst, int dst_linesize,
245 int8_t *dir, int dir_linesize,
246
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 52 times.
 52 const uint8_t *src, int src_linesize, int src_stride) = (bpp == 2) ? &ff_sobel_16 : &ff_sobel_8;
247 52 void (*gaussian_blur)(int w, int h,
248 uint8_t *dst, int dst_linesize,
249
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 52 times.
 52 const uint8_t *src, int src_linesize, int src_stride) = (bpp == 2) ? &ff_gaussian_blur_16 : &ff_gaussian_blur_8;
250
251
252 // ignore first s->skip frames
253
2/2
✓ Branch 0 taken 46 times.
✓ Branch 1 taken 6 times.
 52 if (++s->frame_nb > 0) {
254 46 metadata = &frame->metadata;
255
256 // Reset the crop area every reset_count frames, if reset_count is > 0
257
1/4
✗ Branch 0 not taken.
✓ Branch 1 taken 46 times.
✗ Branch 2 not taken.
✗ Branch 3 not taken.
 46 if (s->reset_count > 0 && s->frame_nb > s->reset_count) {
258 ✗ s->x1 = frame->width - 1;
259 ✗ s->y1 = frame->height - 1;
260 ✗ s->x2 = 0;
261 ✗ s->y2 = 0;
262 ✗ s->frame_nb = 1;
263 }
264
265 #define FIND(DST, FROM, NOEND, INC, STEP0, STEP1, LEN) \
266 outliers = 0;\
267 for (last_y = y = FROM; NOEND; y = y INC) {\
268 if (checkline(ctx, frame->data[0] + STEP0 * y, STEP1, LEN, bpp) > limit_upscaled) {\
269 if (++outliers > s->max_outliers) { \
270 DST = last_y;\
271 break;\
272 }\
273 } else\
274 last_y = y INC;\
275 }
276
277
2/2
✓ Branch 0 taken 30 times.
✓ Branch 1 taken 16 times.
 46 if (s->mode == MODE_BLACK) {
278
6/6
✓ Branch 1 taken 62 times.
✓ Branch 2 taken 1772 times.
✓ Branch 3 taken 1 times.
✓ Branch 4 taken 61 times.
✓ Branch 5 taken 1834 times.
✓ Branch 6 taken 29 times.
 1863 FIND(s->y1, 0, y < s->y1, +1, frame->linesize[0], bpp, frame->width);
279
6/6
✓ Branch 1 taken 4 times.
✓ Branch 2 taken 1830 times.
✓ Branch 3 taken 1 times.
✓ Branch 4 taken 3 times.
✓ Branch 5 taken 1834 times.
✓ Branch 6 taken 29 times.
 1863 FIND(s->y2, frame->height - 1, y > FFMAX(s->y2, s->y1), -1, frame->linesize[0], bpp, frame->width);
280
5/6
✓ Branch 1 taken 4 times.
✗ Branch 2 not taken.
✓ Branch 3 taken 1 times.
✓ Branch 4 taken 3 times.
✓ Branch 5 taken 4 times.
✓ Branch 6 taken 29 times.
 33 FIND(s->x1, 0, y < s->x1, +1, bpp, frame->linesize[0], frame->height);
281
5/6
✓ Branch 1 taken 4 times.
✗ Branch 2 not taken.
✓ Branch 3 taken 1 times.
✓ Branch 4 taken 3 times.
✓ Branch 5 taken 4 times.
✓ Branch 6 taken 29 times.
 33 FIND(s->x2, frame->width - 1, y > FFMAX(s->x2, s->x1), -1, bpp, frame->linesize[0], frame->height);
282 } else { // MODE_MV_EDGES
283 16 sd = av_frame_get_side_data(frame, AV_FRAME_DATA_MOTION_VECTORS);
284 16 s->x1 = 0;
285 16 s->y1 = 0;
286 16 s->x2 = inw - 1;
287 16 s->y2 = inh - 1;
288
289
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 16 times.
 16 if (!sd) {
290 ✗ av_log(ctx, AV_LOG_WARNING, "Cannot detect: no motion vectors available");
291 } else {
292 // gaussian filter to reduce noise
293 16 gaussian_blur(inw, inh,
294 filterbuf, inw*bpp,
295 16 frame->data[0], frame->linesize[0], bpp);
296
297 // compute the 16-bits gradients and directions for the next step
298 16 sobel(inw, inh, gradients, inw, directions, inw, filterbuf, inw*bpp, bpp);
299
300 // non_maximum_suppression() will actually keep & clip what's necessary and
301 // ignore the rest, so we need a clean output buffer
302 16 memset(tmpbuf, 0, inw * inh);
303 16 ff_non_maximum_suppression(inw, inh, tmpbuf, inw, directions, inw, gradients, inw);
304
305
306 // keep high values, or low values surrounded by high values
307 16 ff_double_threshold(s->low_u8, s->high_u8, inw, inh,
308 tmpbuf, inw, tmpbuf, inw);
309
310 // scan all MVs and store bounding box
311 16 s->x1 = inw - 1;
312 16 s->y1 = inh - 1;
313 16 s->x2 = 0;
314 16 s->y2 = 0;
315
2/2
✓ Branch 0 taken 191400 times.
✓ Branch 1 taken 16 times.
 191416 for (i = 0; i < sd->size / sizeof(AVMotionVector); i++) {
316 191400 const AVMotionVector *mv = (const AVMotionVector*)sd->data + i;
317 191400 const int mx = mv->dst_x - mv->src_x;
318 191400 const int my = mv->dst_y - mv->src_y;
319
320
2/4
✓ Branch 0 taken 191400 times.
✗ Branch 1 not taken.
✓ Branch 2 taken 191400 times.
✗ Branch 3 not taken.
 191400 if (mv->dst_x >= 0 && mv->dst_x < inw &&
321
2/4
✓ Branch 0 taken 191400 times.
✗ Branch 1 not taken.
✓ Branch 2 taken 191400 times.
✗ Branch 3 not taken.
 191400 mv->dst_y >= 0 && mv->dst_y < inh &&
322
2/4
✓ Branch 0 taken 191400 times.
✗ Branch 1 not taken.
✓ Branch 2 taken 191400 times.
✗ Branch 3 not taken.
 191400 mv->src_x >= 0 && mv->src_x < inw &&
323
2/4
✓ Branch 0 taken 191400 times.
✗ Branch 1 not taken.
✓ Branch 2 taken 191400 times.
✗ Branch 3 not taken.
 191400 mv->src_y >= 0 && mv->src_y < inh &&
324
2/2
✓ Branch 0 taken 263 times.
✓ Branch 1 taken 191137 times.
 191400 mx * mx + my * my >= s->mv_threshold * s->mv_threshold) {
325 263 s->x1 = mv->dst_x < s->x1 ? mv->dst_x : s->x1;
326 263 s->y1 = mv->dst_y < s->y1 ? mv->dst_y : s->y1;
327 263 s->x2 = mv->dst_x > s->x2 ? mv->dst_x : s->x2;
328 263 s->y2 = mv->dst_y > s->y2 ? mv->dst_y : s->y2;
329 }
330 }
331
332 // assert x1<x2, y1<y2
333
2/2
✓ Branch 0 taken 2 times.
✓ Branch 1 taken 14 times.
 16 if (s->x1 > s->x2) FFSWAP(int, s->x1, s->x2);
334
2/2
✓ Branch 0 taken 2 times.
✓ Branch 1 taken 14 times.
 16 if (s->y1 > s->y2) FFSWAP(int, s->y1, s->y2);
335
336 // scan outward looking for 0-edge-lines in edge image
337 16 scan_w = s->x2 - s->x1;
338 16 scan_h = s->y2 - s->y1;
339
340 #define FIND_EDGE(DST, FROM, NOEND, INC, STEP0, STEP1, LEN) \
341 for (last_y = y = FROM; NOEND; y = y INC) { \
342 if (checkline_edge(ctx, tmpbuf + STEP0 * y, STEP1, LEN)) { \
343 if (last_y INC == y) { \
344 DST = y; \
345 break; \
346 } else \
347 last_y = y; \
348 } \
349 } \
350 if (!(NOEND)) { \
351 DST = y -(INC); \
352 }
353
354
8/8
✓ Branch 1 taken 33 times.
✓ Branch 2 taken 464 times.
✓ Branch 3 taken 14 times.
✓ Branch 4 taken 19 times.
✓ Branch 5 taken 497 times.
✓ Branch 6 taken 2 times.
✓ Branch 7 taken 2 times.
✓ Branch 8 taken 14 times.
 499 FIND_EDGE(s->y1, s->y1, y >= 0, -1, inw, 1, scan_w);
355
8/8
✓ Branch 1 taken 30 times.
✓ Branch 2 taken 433 times.
✓ Branch 3 taken 14 times.
✓ Branch 4 taken 16 times.
✓ Branch 5 taken 463 times.
✓ Branch 6 taken 2 times.
✓ Branch 7 taken 2 times.
✓ Branch 8 taken 14 times.
 465 FIND_EDGE(s->y2, s->y2, y < inh, +1, inw, 1, scan_w);
356
8/8
✓ Branch 1 taken 26 times.
✓ Branch 2 taken 1009 times.
✓ Branch 3 taken 10 times.
✓ Branch 4 taken 16 times.
✓ Branch 5 taken 1035 times.
✓ Branch 6 taken 6 times.
✓ Branch 7 taken 6 times.
✓ Branch 8 taken 10 times.
 1041 FIND_EDGE(s->x1, s->x1, y >= 0, -1, 1, inw, scan_h);
357
8/8
✓ Branch 1 taken 26 times.
✓ Branch 2 taken 970 times.
✓ Branch 3 taken 10 times.
✓ Branch 4 taken 16 times.
✓ Branch 5 taken 996 times.
✓ Branch 6 taken 6 times.
✓ Branch 7 taken 6 times.
✓ Branch 8 taken 10 times.
 1002 FIND_EDGE(s->x2, s->x2, y < inw, +1, 1, inw, scan_h);
358
359 // queue bboxes
360 16 bboff = (s->frame_nb - 1) % s->window_size;
361 16 s->bboxes[0][bboff] = s->x1;
362 16 s->bboxes[1][bboff] = s->x2;
363 16 s->bboxes[2][bboff] = s->y1;
364 16 s->bboxes[3][bboff] = s->y2;
365
366 // sort queue
367 16 bboff = FFMIN(s->frame_nb, s->window_size);
368
43/44
✓ Branch 0 taken 18 times.
✓ Branch 1 taken 6 times.
✓ Branch 3 taken 3 times.
✓ Branch 4 taken 15 times.
✗ Branch 6 not taken.
✓ Branch 7 taken 3 times.
✓ Branch 9 taken 1 times.
✓ Branch 10 taken 14 times.
✓ Branch 12 taken 4 times.
✓ Branch 13 taken 14 times.
✓ Branch 14 taken 6 times.
✓ Branch 15 taken 12 times.
✓ Branch 16 taken 17 times.
✓ Branch 17 taken 2 times.
✓ Branch 19 taken 3 times.
✓ Branch 20 taken 14 times.
✓ Branch 21 taken 22 times.
✓ Branch 22 taken 3 times.
✓ Branch 24 taken 9 times.
✓ Branch 25 taken 13 times.
✓ Branch 26 taken 13 times.
✓ Branch 27 taken 3 times.
✓ Branch 28 taken 16 times.
✓ Branch 29 taken 12 times.
✓ Branch 30 taken 8 times.
✓ Branch 31 taken 4 times.
✓ Branch 32 taken 6 times.
✓ Branch 33 taken 2 times.
✓ Branch 34 taken 4 times.
✓ Branch 35 taken 2 times.
✓ Branch 36 taken 26 times.
✓ Branch 37 taken 5 times.
✓ Branch 39 taken 25 times.
✓ Branch 40 taken 1 times.
✓ Branch 41 taken 5 times.
✓ Branch 42 taken 1 times.
✓ Branch 43 taken 3 times.
✓ Branch 44 taken 4 times.
✓ Branch 46 taken 3 times.
✓ Branch 47 taken 3 times.
✓ Branch 48 taken 24 times.
✓ Branch 49 taken 6 times.
✓ Branch 50 taken 23 times.
✓ Branch 51 taken 16 times.
 111 AV_QSORT(s->bboxes[0], bboff, int, comp);
369
44/44
✓ Branch 0 taken 18 times.
✓ Branch 1 taken 11 times.
✓ Branch 3 taken 5 times.
✓ Branch 4 taken 13 times.
✓ Branch 6 taken 1 times.
✓ Branch 7 taken 4 times.
✓ Branch 9 taken 1 times.
✓ Branch 10 taken 12 times.
✓ Branch 12 taken 7 times.
✓ Branch 13 taken 11 times.
✓ Branch 14 taken 4 times.
✓ Branch 15 taken 14 times.
✓ Branch 16 taken 20 times.
✓ Branch 17 taken 2 times.
✓ Branch 19 taken 7 times.
✓ Branch 20 taken 13 times.
✓ Branch 21 taken 24 times.
✓ Branch 22 taken 6 times.
✓ Branch 24 taken 15 times.
✓ Branch 25 taken 9 times.
✓ Branch 26 taken 9 times.
✓ Branch 27 taken 6 times.
✓ Branch 28 taken 15 times.
✓ Branch 29 taken 14 times.
✓ Branch 30 taken 8 times.
✓ Branch 31 taken 6 times.
✓ Branch 32 taken 6 times.
✓ Branch 33 taken 2 times.
✓ Branch 34 taken 3 times.
✓ Branch 35 taken 3 times.
✓ Branch 36 taken 18 times.
✓ Branch 37 taken 3 times.
✓ Branch 39 taken 16 times.
✓ Branch 40 taken 2 times.
✓ Branch 41 taken 3 times.
✓ Branch 42 taken 2 times.
✓ Branch 43 taken 3 times.
✓ Branch 44 taken 8 times.
✓ Branch 46 taken 4 times.
✓ Branch 47 taken 7 times.
✓ Branch 48 taken 29 times.
✓ Branch 49 taken 9 times.
✓ Branch 50 taken 27 times.
✓ Branch 51 taken 16 times.
 121 AV_QSORT(s->bboxes[1], bboff, int, comp);
370
43/44
✓ Branch 0 taken 18 times.
✓ Branch 1 taken 11 times.
✓ Branch 3 taken 5 times.
✓ Branch 4 taken 13 times.
✗ Branch 6 not taken.
✓ Branch 7 taken 5 times.
✓ Branch 9 taken 1 times.
✓ Branch 10 taken 12 times.
✓ Branch 12 taken 5 times.
✓ Branch 13 taken 13 times.
✓ Branch 14 taken 4 times.
✓ Branch 15 taken 14 times.
✓ Branch 16 taken 15 times.
✓ Branch 17 taken 3 times.
✓ Branch 19 taken 4 times.
✓ Branch 20 taken 11 times.
✓ Branch 21 taken 27 times.
✓ Branch 22 taken 4 times.
✓ Branch 24 taken 17 times.
✓ Branch 25 taken 10 times.
✓ Branch 26 taken 10 times.
✓ Branch 27 taken 4 times.
✓ Branch 28 taken 14 times.
✓ Branch 29 taken 14 times.
✓ Branch 30 taken 7 times.
✓ Branch 31 taken 7 times.
✓ Branch 32 taken 5 times.
✓ Branch 33 taken 2 times.
✓ Branch 34 taken 4 times.
✓ Branch 35 taken 1 times.
✓ Branch 36 taken 21 times.
✓ Branch 37 taken 4 times.
✓ Branch 39 taken 19 times.
✓ Branch 40 taken 2 times.
✓ Branch 41 taken 4 times.
✓ Branch 42 taken 2 times.
✓ Branch 43 taken 3 times.
✓ Branch 44 taken 7 times.
✓ Branch 46 taken 4 times.
✓ Branch 47 taken 7 times.
✓ Branch 48 taken 29 times.
✓ Branch 49 taken 7 times.
✓ Branch 50 taken 26 times.
✓ Branch 51 taken 16 times.
 120 AV_QSORT(s->bboxes[2], bboff, int, comp);
371
39/44
✓ Branch 0 taken 16 times.
✓ Branch 1 taken 5 times.
✓ Branch 3 taken 3 times.
✓ Branch 4 taken 13 times.
✗ Branch 6 not taken.
✓ Branch 7 taken 3 times.
✓ Branch 9 taken 1 times.
✓ Branch 10 taken 12 times.
✓ Branch 12 taken 5 times.
✓ Branch 13 taken 11 times.
✓ Branch 14 taken 4 times.
✓ Branch 15 taken 12 times.
✓ Branch 16 taken 21 times.
✗ Branch 17 not taken.
✓ Branch 19 taken 8 times.
✓ Branch 20 taken 13 times.
✓ Branch 21 taken 22 times.
✓ Branch 22 taken 5 times.
✓ Branch 24 taken 14 times.
✓ Branch 25 taken 8 times.
✓ Branch 26 taken 8 times.
✓ Branch 27 taken 5 times.
✓ Branch 28 taken 13 times.
✓ Branch 29 taken 12 times.
✓ Branch 30 taken 7 times.
✓ Branch 31 taken 5 times.
✓ Branch 32 taken 3 times.
✓ Branch 33 taken 4 times.
✓ Branch 34 taken 2 times.
✓ Branch 35 taken 1 times.
✓ Branch 36 taken 28 times.
✓ Branch 37 taken 6 times.
✓ Branch 39 taken 28 times.
✗ Branch 40 not taken.
✓ Branch 41 taken 6 times.
✗ Branch 42 not taken.
✓ Branch 43 taken 1 times.
✓ Branch 44 taken 5 times.
✗ Branch 46 not taken.
✓ Branch 47 taken 5 times.
✓ Branch 48 taken 21 times.
✓ Branch 49 taken 7 times.
✓ Branch 50 taken 22 times.
✓ Branch 51 taken 16 times.
 119 AV_QSORT(s->bboxes[3], bboff, int, comp);
372
373 // return median of window_size elems
374 16 s->x1 = s->bboxes[0][bboff/2];
375 16 s->x2 = s->bboxes[1][bboff/2];
376 16 s->y1 = s->bboxes[2][bboff/2];
377 16 s->y2 = s->bboxes[3][bboff/2];
378 }
379 }
380
381 // round x and y (up), important for yuv colorspaces
382 // make sure they stay rounded!
383 46 x = (s->x1+1) & ~1;
384 46 y = (s->y1+1) & ~1;
385
386 46 w = s->x2 - x + 1;
387 46 h = s->y2 - y + 1;
388
389 // w and h must be divisible by 2 as well because of yuv
390 // colorspace problems.
391
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 46 times.
 46 if (s->round <= 1)
392 ✗ s->round = 16;
393
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 46 times.
 46 if (s->round % 2)
394 ✗ s->round *= 2;
395
396 46 shrink_by = w % s->round;
397 46 w -= shrink_by;
398 46 x += (shrink_by/2 + 1) & ~1;
399
400 46 shrink_by = h % s->round;
401 46 h -= shrink_by;
402 46 y += (shrink_by/2 + 1) & ~1;
403
404 46 SET_META("lavfi.cropdetect.x1", s->x1);
405 46 SET_META("lavfi.cropdetect.x2", s->x2);
406 46 SET_META("lavfi.cropdetect.y1", s->y1);
407 46 SET_META("lavfi.cropdetect.y2", s->y2);
408 46 SET_META("lavfi.cropdetect.w", w);
409 46 SET_META("lavfi.cropdetect.h", h);
410 46 SET_META("lavfi.cropdetect.x", x);
411 46 SET_META("lavfi.cropdetect.y", y);
412
413 46 snprintf(limit_str, sizeof(limit_str), "%f", s->limit);
414 46 av_dict_set(metadata, "lavfi.cropdetect.limit", limit_str, 0);
415
416 46 av_log(ctx, AV_LOG_INFO,
417 "x1:%d x2:%d y1:%d y2:%d w:%d h:%d x:%d y:%d pts:%"PRId64" t:%f limit:%f crop=%d:%d:%d:%d\n",
418 s->x1, s->x2, s->y1, s->y2, w, h, x, y, frame->pts,
419 46 frame->pts == AV_NOPTS_VALUE ? -1 : frame->pts * av_q2d(inlink->time_base),
420
1/2
✓ Branch 0 taken 46 times.
✗ Branch 1 not taken.
 46 s->limit, w, h, x, y);
421 }
422
423 52 return ff_filter_frame(inlink->dst->outputs[0], frame);
424 }
425
426 ✗ static int process_command(AVFilterContext *ctx, const char *cmd, const char *args,
427 char *res, int res_len, int flags)
428 {
429 ✗ CropDetectContext *s = ctx->priv;
430 ✗ float old_limit = s->limit;
431 int ret;
432
433 ✗ if ((ret = ff_filter_process_command(ctx, cmd, args, res, res_len, flags)) < 0)
434 ✗ return ret;
435
436 ✗ if (old_limit != s->limit) {
437 ✗ if (s->limit < 1.0)
438 ✗ s->limit_upscaled = s->limit * ((1 << s->bitdepth) - 1);
439 else
440 ✗ s->limit_upscaled = s->limit;
441 ✗ s->frame_nb = s->reset_count;
442 }
443
444 ✗ return 0;
445 }
446
447 #define OFFSET(x) offsetof(CropDetectContext, x)
448 #define FLAGS AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_FILTERING_PARAM
449 #define TFLAGS AV_OPT_FLAG_FILTERING_PARAM | AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_RUNTIME_PARAM
450
451 static const AVOption cropdetect_options[] = {
452 { "limit", "Threshold below which the pixel is considered black", OFFSET(limit), AV_OPT_TYPE_FLOAT, { .dbl = 24.0/255 }, 0, 65535, TFLAGS },
453 { "round", "Value by which the width/height should be divisible", OFFSET(round), AV_OPT_TYPE_INT, { .i64 = 16 }, 0, INT_MAX, FLAGS },
454 { "reset", "Recalculate the crop area after this many frames", OFFSET(reset_count), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, INT_MAX, FLAGS },
455 { "skip", "Number of initial frames to skip", OFFSET(skip), AV_OPT_TYPE_INT, { .i64 = 2 }, 0, INT_MAX, FLAGS },
456 { "reset_count", "Recalculate the crop area after this many frames",OFFSET(reset_count),AV_OPT_TYPE_INT,{ .i64 = 0 }, 0, INT_MAX, FLAGS },
457 { "max_outliers", "Threshold count of outliers", OFFSET(max_outliers),AV_OPT_TYPE_INT, { .i64 = 0 }, 0, INT_MAX, FLAGS },
458 { "mode", "set mode", OFFSET(mode), AV_OPT_TYPE_INT, {.i64=MODE_BLACK}, 0, MODE_NB-1, FLAGS, .unit = "mode" },
459 { "black", "detect black pixels surrounding the video", 0, AV_OPT_TYPE_CONST, {.i64=MODE_BLACK}, INT_MIN, INT_MAX, FLAGS, .unit = "mode" },
460 { "mvedges", "detect motion and edged surrounding the video", 0, AV_OPT_TYPE_CONST, {.i64=MODE_MV_EDGES}, INT_MIN, INT_MAX, FLAGS, .unit = "mode" },
461 { "high", "Set high threshold for edge detection", OFFSET(high), AV_OPT_TYPE_FLOAT, {.dbl=25/255.}, 0, 1, FLAGS },
462 { "low", "Set low threshold for edge detection", OFFSET(low), AV_OPT_TYPE_FLOAT, {.dbl=15/255.}, 0, 1, FLAGS },
463 { "mv_threshold", "motion vector threshold when estimating video window size", OFFSET(mv_threshold), AV_OPT_TYPE_INT, {.i64=8}, 0, 100, FLAGS},
464 { NULL }
465 };
466
467 AVFILTER_DEFINE_CLASS(cropdetect);
468
469 static const AVFilterPad avfilter_vf_cropdetect_inputs[] = {
470 {
471 .name = "default",
472 .type = AVMEDIA_TYPE_VIDEO,
473 .config_props = config_input,
474 .filter_frame = filter_frame,
475 },
476 };
477
478 const FFFilter ff_vf_cropdetect = {
479 .p.name = "cropdetect",
480 .p.description = NULL_IF_CONFIG_SMALL("Auto-detect crop size."),
481 .p.priv_class = &cropdetect_class,
482 .p.flags = AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC | AVFILTER_FLAG_METADATA_ONLY,
483 .priv_size = sizeof(CropDetectContext),
484 .init = init,
485 .uninit = uninit,
486 FILTER_INPUTS(avfilter_vf_cropdetect_inputs),
487 FILTER_OUTPUTS(ff_video_default_filterpad),
488 FILTER_PIXFMTS_ARRAY(pix_fmts),
489 .process_command = process_command,
490 };
491