FFmpeg coverage


Directory: ../../../ffmpeg/
File: src/libavfilter/vf_framerate.c
Date: 2022-12-05 03:11:11
Exec Total Coverage
Lines: 166 187 88.8%
Functions: 12 12 100.0%
Branches: 81 108 75.0%

Line Branch Exec Source
1 /*
2 * Copyright (C) 2012 Mark Himsley
3 *
4 * get_scene_score() Copyright (c) 2011 Stefano Sabatini
5 * taken from libavfilter/vf_select.c
6 *
7 * This file is part of FFmpeg.
8 *
9 * FFmpeg is free software; you can redistribute it and/or
10 * modify it under the terms of the GNU Lesser General Public
11 * License as published by the Free Software Foundation; either
12 * version 2.1 of the License, or (at your option) any later version.
13 *
14 * FFmpeg is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17 * Lesser General Public License for more details.
18 *
19 * You should have received a copy of the GNU Lesser General Public
20 * License along with FFmpeg; if not, write to the Free Software
21 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
22 */
23
24 /**
25 * @file
26 * filter for upsampling or downsampling a progressive source
27 */
28
29 #define DEBUG
30
31 #include "libavutil/avassert.h"
32 #include "libavutil/imgutils.h"
33 #include "libavutil/internal.h"
34 #include "libavutil/opt.h"
35 #include "libavutil/pixdesc.h"
36
37 #include "avfilter.h"
38 #include "internal.h"
39 #include "video.h"
40 #include "filters.h"
41 #include "framerate.h"
42 #include "scene_sad.h"
43
44 #define OFFSET(x) offsetof(FrameRateContext, x)
45 #define V AV_OPT_FLAG_VIDEO_PARAM
46 #define F AV_OPT_FLAG_FILTERING_PARAM
47 #define FRAMERATE_FLAG_SCD 01
48
49 static const AVOption framerate_options[] = {
50 {"fps", "required output frames per second rate", OFFSET(dest_frame_rate), AV_OPT_TYPE_VIDEO_RATE, {.str="50"}, 0, INT_MAX, V|F },
51
52 {"interp_start", "point to start linear interpolation", OFFSET(interp_start), AV_OPT_TYPE_INT, {.i64=15}, 0, 255, V|F },
53 {"interp_end", "point to end linear interpolation", OFFSET(interp_end), AV_OPT_TYPE_INT, {.i64=240}, 0, 255, V|F },
54 {"scene", "scene change level", OFFSET(scene_score), AV_OPT_TYPE_DOUBLE, {.dbl=8.2}, 0, 100., V|F },
55
56 {"flags", "set flags", OFFSET(flags), AV_OPT_TYPE_FLAGS, {.i64=1}, 0, INT_MAX, V|F, "flags" },
57 {"scene_change_detect", "enable scene change detection", 0, AV_OPT_TYPE_CONST, {.i64=FRAMERATE_FLAG_SCD}, INT_MIN, INT_MAX, V|F, "flags" },
58 {"scd", "enable scene change detection", 0, AV_OPT_TYPE_CONST, {.i64=FRAMERATE_FLAG_SCD}, INT_MIN, INT_MAX, V|F, "flags" },
59
60 {NULL}
61 };
62
63 AVFILTER_DEFINE_CLASS(framerate);
64
65 91 static double get_scene_score(AVFilterContext *ctx, AVFrame *crnt, AVFrame *next)
66 {
67 91 FrameRateContext *s = ctx->priv;
68 91 double ret = 0;
69
70 91 ff_dlog(ctx, "get_scene_score()\n");
71
72
1/2
✓ Branch 0 taken 91 times.
✗ Branch 1 not taken.
91 if (crnt->height == next->height &&
73
1/2
✓ Branch 0 taken 91 times.
✗ Branch 1 not taken.
91 crnt->width == next->width) {
74 uint64_t sad;
75 double mafd, diff;
76
77 91 ff_dlog(ctx, "get_scene_score() process\n");
78 91 s->sad(crnt->data[0], crnt->linesize[0], next->data[0], next->linesize[0], crnt->width, crnt->height, &sad);
79 91 emms_c();
80 91 mafd = (double)sad * 100.0 / (crnt->width * crnt->height) / (1 << s->bitdepth);
81 91 diff = fabs(mafd - s->prev_mafd);
82
2/2
✓ Branch 0 taken 88 times.
✓ Branch 1 taken 3 times.
91 ret = av_clipf(FFMIN(mafd, diff), 0, 100.0);
83 91 s->prev_mafd = mafd;
84 }
85 91 ff_dlog(ctx, "get_scene_score() result is:%f\n", ret);
86 91 return ret;
87 }
88
89 typedef struct ThreadData {
90 AVFrame *copy_src1, *copy_src2;
91 uint16_t src1_factor, src2_factor;
92 } ThreadData;
93
94 873 static int filter_slice(AVFilterContext *ctx, void *arg, int job, int nb_jobs)
95 {
96 873 FrameRateContext *s = ctx->priv;
97 873 ThreadData *td = arg;
98 873 AVFrame *work = s->work;
99 873 AVFrame *src1 = td->copy_src1;
100 873 AVFrame *src2 = td->copy_src2;
101 873 uint16_t src1_factor = td->src1_factor;
102 873 uint16_t src2_factor = td->src2_factor;
103 int plane;
104
105
4/6
✓ Branch 0 taken 3492 times.
✗ Branch 1 not taken.
✓ Branch 2 taken 2619 times.
✓ Branch 3 taken 873 times.
✓ Branch 4 taken 2619 times.
✗ Branch 5 not taken.
3492 for (plane = 0; plane < 4 && src1->data[plane] && src2->data[plane]; plane++) {
106 2619 const int start = (s->height[plane] * job ) / nb_jobs;
107 2619 const int end = (s->height[plane] * (job+1)) / nb_jobs;
108 2619 uint8_t *src1_data = src1->data[plane] + start * src1->linesize[plane];
109 2619 uint8_t *src2_data = src2->data[plane] + start * src2->linesize[plane];
110 2619 uint8_t *dst_data = work->data[plane] + start * work->linesize[plane];
111
112 2619 s->blend(src1_data, src1->linesize[plane], src2_data, src2->linesize[plane],
113 2619 dst_data, work->linesize[plane], s->line_size[plane], end - start,
114 2619 src1_factor, src2_factor, s->blend_factor_max >> 1);
115 }
116
117 873 return 0;
118 }
119
120 97 static int blend_frames(AVFilterContext *ctx, int interpolate)
121 {
122 97 FrameRateContext *s = ctx->priv;
123 97 AVFilterLink *outlink = ctx->outputs[0];
124 97 double interpolate_scene_score = 0;
125
126
1/2
✓ Branch 0 taken 97 times.
✗ Branch 1 not taken.
97 if ((s->flags & FRAMERATE_FLAG_SCD)) {
127
2/2
✓ Branch 0 taken 6 times.
✓ Branch 1 taken 91 times.
97 if (s->score >= 0.0)
128 6 interpolate_scene_score = s->score;
129 else
130 91 interpolate_scene_score = s->score = get_scene_score(ctx, s->f0, s->f1);
131 97 ff_dlog(ctx, "blend_frames() interpolate scene score:%f\n", interpolate_scene_score);
132 }
133 // decide if the shot-change detection allows us to blend two frames
134
1/2
✓ Branch 0 taken 97 times.
✗ Branch 1 not taken.
97 if (interpolate_scene_score < s->scene_score) {
135 ThreadData td;
136 97 td.copy_src1 = s->f0;
137 97 td.copy_src2 = s->f1;
138 97 td.src2_factor = interpolate;
139 97 td.src1_factor = s->blend_factor_max - td.src2_factor;
140
141 // get work-space for output frame
142 97 s->work = ff_get_video_buffer(outlink, outlink->w, outlink->h);
143
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 97 times.
97 if (!s->work)
144 return AVERROR(ENOMEM);
145
146 97 av_frame_copy_props(s->work, s->f0);
147
148 97 ff_dlog(ctx, "blend_frames() INTERPOLATE to create work frame\n");
149 97 ff_filter_execute(ctx, filter_slice, &td, NULL,
150
1/2
✓ Branch 0 taken 97 times.
✗ Branch 1 not taken.
97 FFMIN(FFMAX(1, outlink->h >> 2), ff_filter_get_nb_threads(ctx)));
151 97 return 1;
152 }
153 return 0;
154 }
155
156 365 static int process_work_frame(AVFilterContext *ctx)
157 {
158 365 FrameRateContext *s = ctx->priv;
159 int64_t work_pts;
160 int64_t interpolate, interpolate8;
161 int ret;
162
163
2/2
✓ Branch 0 taken 8 times.
✓ Branch 1 taken 357 times.
365 if (!s->f1)
164 8 return 0;
165
3/4
✓ Branch 0 taken 8 times.
✓ Branch 1 taken 349 times.
✓ Branch 2 taken 8 times.
✗ Branch 3 not taken.
357 if (!s->f0 && !s->flush)
166 8 return 0;
167
168 349 work_pts = s->start_pts + av_rescale_q(s->n, av_inv_q(s->dest_frame_rate), s->dest_time_base);
169
170
4/4
✓ Branch 0 taken 227 times.
✓ Branch 1 taken 122 times.
✓ Branch 2 taken 224 times.
✓ Branch 3 taken 3 times.
349 if (work_pts >= s->pts1 && !s->flush)
171 224 return 0;
172
173
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 125 times.
125 if (!s->f0) {
174 av_assert1(s->flush);
175 s->work = s->f1;
176 s->f1 = NULL;
177 } else {
178
3/4
✓ Branch 0 taken 2 times.
✓ Branch 1 taken 123 times.
✓ Branch 2 taken 2 times.
✗ Branch 3 not taken.
125 if (work_pts >= s->pts1 + s->delta && s->flush)
179 2 return 0;
180
181 123 interpolate = av_rescale(work_pts - s->pts0, s->blend_factor_max, s->delta);
182 123 interpolate8 = av_rescale(work_pts - s->pts0, 256, s->delta);
183 123 ff_dlog(ctx, "process_work_frame() interpolate: %"PRId64"/256\n", interpolate8);
184
3/4
✓ Branch 0 taken 122 times.
✓ Branch 1 taken 1 times.
✗ Branch 2 not taken.
✓ Branch 3 taken 122 times.
123 if (interpolate >= s->blend_factor_max || interpolate8 > s->interp_end) {
185 1 s->work = av_frame_clone(s->f1);
186
3/4
✓ Branch 0 taken 97 times.
✓ Branch 1 taken 25 times.
✗ Branch 2 not taken.
✓ Branch 3 taken 97 times.
122 } else if (interpolate <= 0 || interpolate8 < s->interp_start) {
187 25 s->work = av_frame_clone(s->f0);
188 } else {
189 97 ret = blend_frames(ctx, interpolate);
190
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 97 times.
97 if (ret < 0)
191 return ret;
192
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 97 times.
97 if (ret == 0)
193 s->work = av_frame_clone(interpolate > (s->blend_factor_max >> 1) ? s->f1 : s->f0);
194 }
195 }
196
197
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 123 times.
123 if (!s->work)
198 return AVERROR(ENOMEM);
199
200 123 s->work->pts = work_pts;
201 123 s->n++;
202
203 123 return 1;
204 }
205
206 8 static av_cold int init(AVFilterContext *ctx)
207 {
208 8 FrameRateContext *s = ctx->priv;
209 8 s->start_pts = AV_NOPTS_VALUE;
210 8 return 0;
211 }
212
213 8 static av_cold void uninit(AVFilterContext *ctx)
214 {
215 8 FrameRateContext *s = ctx->priv;
216 8 av_frame_free(&s->f0);
217 8 av_frame_free(&s->f1);
218 8 }
219
220 static const enum AVPixelFormat pix_fmts[] = {
221 AV_PIX_FMT_YUV410P,
222 AV_PIX_FMT_YUV411P, AV_PIX_FMT_YUVJ411P,
223 AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUVJ420P,
224 AV_PIX_FMT_YUV422P, AV_PIX_FMT_YUVJ422P,
225 AV_PIX_FMT_YUV440P, AV_PIX_FMT_YUVJ440P,
226 AV_PIX_FMT_YUV444P, AV_PIX_FMT_YUVJ444P,
227 AV_PIX_FMT_YUV420P9, AV_PIX_FMT_YUV420P10, AV_PIX_FMT_YUV420P12,
228 AV_PIX_FMT_YUV422P9, AV_PIX_FMT_YUV422P10, AV_PIX_FMT_YUV422P12,
229 AV_PIX_FMT_YUV444P9, AV_PIX_FMT_YUV444P10, AV_PIX_FMT_YUV444P12,
230 AV_PIX_FMT_NONE
231 };
232
233 #define BLEND_FRAME_FUNC(nbits) \
234 static void blend_frames##nbits##_c(BLEND_FUNC_PARAMS) \
235 { \
236 int line, pixel; \
237 uint##nbits##_t *dstw = (uint##nbits##_t *)dst; \
238 uint##nbits##_t *src1w = (uint##nbits##_t *)src1; \
239 uint##nbits##_t *src2w = (uint##nbits##_t *)src2; \
240 int bytes = nbits / 8; \
241 width /= bytes; \
242 src1_linesize /= bytes; \
243 src2_linesize /= bytes; \
244 dst_linesize /= bytes; \
245 for (line = 0; line < height; line++) { \
246 for (pixel = 0; pixel < width; pixel++) \
247 dstw[pixel] = ((src1w[pixel] * factor1) + \
248 (src2w[pixel] * factor2) + half) \
249 >> BLEND_FACTOR_DEPTH(nbits); \
250 src1w += src1_linesize; \
251 src2w += src2_linesize; \
252 dstw += dst_linesize; \
253 } \
254 }
255
4/4
✓ Branch 0 taken 921600 times.
✓ Branch 1 taken 3840 times.
✓ Branch 2 taken 3840 times.
✓ Branch 3 taken 216 times.
925656 BLEND_FRAME_FUNC(8)
256
4/4
✓ Branch 0 taken 13670400 times.
✓ Branch 1 taken 64080 times.
✓ Branch 2 taken 64080 times.
✓ Branch 3 taken 2403 times.
13736883 BLEND_FRAME_FUNC(16)
257
258 4 void ff_framerate_init(FrameRateContext *s)
259 {
260
2/2
✓ Branch 0 taken 2 times.
✓ Branch 1 taken 2 times.
4 if (s->bitdepth == 8) {
261 2 s->blend_factor_max = 1 << BLEND_FACTOR_DEPTH(8);
262 2 s->blend = blend_frames8_c;
263 } else {
264 2 s->blend_factor_max = 1 << BLEND_FACTOR_DEPTH(16);
265 2 s->blend = blend_frames16_c;
266 }
267 #if ARCH_X86
268 4 ff_framerate_init_x86(s);
269 #endif
270 4 }
271
272 4 static int config_input(AVFilterLink *inlink)
273 {
274 4 AVFilterContext *ctx = inlink->dst;
275 4 FrameRateContext *s = ctx->priv;
276 4 const AVPixFmtDescriptor *pix_desc = av_pix_fmt_desc_get(inlink->format);
277 int plane;
278
279 4 s->vsub = pix_desc->log2_chroma_h;
280
2/2
✓ Branch 0 taken 16 times.
✓ Branch 1 taken 4 times.
20 for (plane = 0; plane < 4; plane++) {
281 16 s->line_size[plane] = av_image_get_linesize(inlink->format, inlink->w, plane);
282
4/4
✓ Branch 0 taken 12 times.
✓ Branch 1 taken 4 times.
✓ Branch 2 taken 4 times.
✓ Branch 3 taken 8 times.
16 s->height[plane] = inlink->h >> ((plane == 1 || plane == 2) ? s->vsub : 0);
283 }
284
285 4 s->bitdepth = pix_desc->comp[0].depth;
286
287
2/2
✓ Branch 0 taken 2 times.
✓ Branch 1 taken 2 times.
4 s->sad = ff_scene_sad_get_fn(s->bitdepth == 8 ? 8 : 16);
288
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 4 times.
4 if (!s->sad)
289 return AVERROR(EINVAL);
290
291 4 s->srce_time_base = inlink->time_base;
292
293 4 ff_framerate_init(s);
294
295 4 return 0;
296 }
297
298 247 static int activate(AVFilterContext *ctx)
299 {
300 int ret, status;
301 247 AVFilterLink *inlink = ctx->inputs[0];
302 247 AVFilterLink *outlink = ctx->outputs[0];
303 247 FrameRateContext *s = ctx->priv;
304 AVFrame *inpicref;
305 int64_t pts;
306
307
2/2
✓ Branch 1 taken 245 times.
✓ Branch 2 taken 2 times.
247 FF_FILTER_FORWARD_STATUS_BACK(outlink, inlink);
308
309 365 retry:
310 365 ret = process_work_frame(ctx);
311
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 365 times.
365 if (ret < 0)
312 return ret;
313
2/2
✓ Branch 0 taken 123 times.
✓ Branch 1 taken 242 times.
365 else if (ret == 1)
314 123 return ff_filter_frame(outlink, s->work);
315
316 242 ret = ff_inlink_consume_frame(inlink, &inpicref);
317
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 242 times.
242 if (ret < 0)
318 return ret;
319
320
2/2
✓ Branch 0 taken 118 times.
✓ Branch 1 taken 124 times.
242 if (inpicref) {
321
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 118 times.
118 if (inpicref->interlaced_frame)
322 av_log(ctx, AV_LOG_WARNING, "Interlaced frame found - the output will not be correct.\n");
323
324
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 118 times.
118 if (inpicref->pts == AV_NOPTS_VALUE) {
325 av_log(ctx, AV_LOG_WARNING, "Ignoring frame without PTS.\n");
326 av_frame_free(&inpicref);
327 }
328 }
329
330
2/2
✓ Branch 0 taken 118 times.
✓ Branch 1 taken 124 times.
242 if (inpicref) {
331 118 pts = av_rescale_q(inpicref->pts, s->srce_time_base, s->dest_time_base);
332
333
3/4
✓ Branch 0 taken 114 times.
✓ Branch 1 taken 4 times.
✗ Branch 2 not taken.
✓ Branch 3 taken 114 times.
118 if (s->f1 && pts == s->pts1) {
334 av_log(ctx, AV_LOG_WARNING, "Ignoring frame with same PTS.\n");
335 av_frame_free(&inpicref);
336 }
337 }
338
339
2/2
✓ Branch 0 taken 118 times.
✓ Branch 1 taken 124 times.
242 if (inpicref) {
340 118 av_frame_free(&s->f0);
341 118 s->f0 = s->f1;
342 118 s->pts0 = s->pts1;
343 118 s->f1 = inpicref;
344 118 s->pts1 = pts;
345 118 s->delta = s->pts1 - s->pts0;
346 118 s->score = -1.0;
347
348
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 118 times.
118 if (s->delta < 0) {
349 av_log(ctx, AV_LOG_WARNING, "PTS discontinuity.\n");
350 s->start_pts = s->pts1;
351 s->n = 0;
352 av_frame_free(&s->f0);
353 }
354
355
2/2
✓ Branch 0 taken 4 times.
✓ Branch 1 taken 114 times.
118 if (s->start_pts == AV_NOPTS_VALUE)
356 4 s->start_pts = s->pts1;
357
358 118 goto retry;
359 }
360
361
2/2
✓ Branch 1 taken 4 times.
✓ Branch 2 taken 120 times.
124 if (ff_inlink_acknowledge_status(inlink, &status, &pts)) {
362
2/2
✓ Branch 0 taken 2 times.
✓ Branch 1 taken 2 times.
4 if (!s->flush) {
363 2 s->flush = 1;
364 2 goto retry;
365 }
366 2 ff_outlink_set_status(outlink, status, pts);
367 2 return 0;
368 }
369
370
1/2
✓ Branch 1 taken 120 times.
✗ Branch 2 not taken.
120 FF_FILTER_FORWARD_WANTED(outlink, inlink);
371
372 return FFERROR_NOT_READY;
373 }
374
375 4 static int config_output(AVFilterLink *outlink)
376 {
377 4 AVFilterContext *ctx = outlink->src;
378 4 FrameRateContext *s = ctx->priv;
379 int exact;
380
381 4 ff_dlog(ctx, "config_output()\n");
382
383 4 ff_dlog(ctx,
384 "config_output() input time base:%u/%u (%f)\n",
385 ctx->inputs[0]->time_base.num,ctx->inputs[0]->time_base.den,
386 av_q2d(ctx->inputs[0]->time_base));
387
388 // make sure timebase is small enough to hold the framerate
389
390 4 exact = av_reduce(&s->dest_time_base.num, &s->dest_time_base.den,
391 4 av_gcd((int64_t)s->srce_time_base.num * s->dest_frame_rate.num,
392 4 (int64_t)s->srce_time_base.den * s->dest_frame_rate.den ),
393 4 (int64_t)s->srce_time_base.den * s->dest_frame_rate.num, INT_MAX);
394
395 4 av_log(ctx, AV_LOG_INFO,
396 "time base:%u/%u -> %u/%u exact:%d\n",
397 s->srce_time_base.num, s->srce_time_base.den,
398 s->dest_time_base.num, s->dest_time_base.den, exact);
399
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 4 times.
4 if (!exact) {
400 av_log(ctx, AV_LOG_WARNING, "Timebase conversion is not exact\n");
401 }
402
403 4 outlink->frame_rate = s->dest_frame_rate;
404 4 outlink->time_base = s->dest_time_base;
405
406 4 ff_dlog(ctx,
407 "config_output() output time base:%u/%u (%f) w:%d h:%d\n",
408 outlink->time_base.num, outlink->time_base.den,
409 av_q2d(outlink->time_base),
410 outlink->w, outlink->h);
411
412
413 4 av_log(ctx, AV_LOG_INFO, "fps -> fps:%u/%u scene score:%f interpolate start:%d end:%d\n",
414 s->dest_frame_rate.num, s->dest_frame_rate.den,
415 s->scene_score, s->interp_start, s->interp_end);
416
417 4 return 0;
418 }
419
420 static const AVFilterPad framerate_inputs[] = {
421 {
422 .name = "default",
423 .type = AVMEDIA_TYPE_VIDEO,
424 .config_props = config_input,
425 },
426 };
427
428 static const AVFilterPad framerate_outputs[] = {
429 {
430 .name = "default",
431 .type = AVMEDIA_TYPE_VIDEO,
432 .config_props = config_output,
433 },
434 };
435
436 const AVFilter ff_vf_framerate = {
437 .name = "framerate",
438 .description = NULL_IF_CONFIG_SMALL("Upsamples or downsamples progressive source between specified frame rates."),
439 .priv_size = sizeof(FrameRateContext),
440 .priv_class = &framerate_class,
441 .init = init,
442 .uninit = uninit,
443 FILTER_INPUTS(framerate_inputs),
444 FILTER_OUTPUTS(framerate_outputs),
445 FILTER_PIXFMTS_ARRAY(pix_fmts),
446 .flags = AVFILTER_FLAG_SLICE_THREADS,
447 .activate = activate,
448 };
449