FFmpeg coverage

Line	Branch	Exec	Source
1			/*
2			* Copyright (c) 2021 Paul B Mahol
3			*
4			* This file is part of FFmpeg.
5			*
6			* FFmpeg is free software; you can redistribute it and/or
7			* modify it under the terms of the GNU Lesser General Public
8			* License as published by the Free Software Foundation; either
9			* version 2.1 of the License, or (at your option) any later version.
10			*
11			* FFmpeg is distributed in the hope that it will be useful,
12			* but WITHOUT ANY WARRANTY; without even the implied warranty of
13			* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14			* Lesser General Public License for more details.
15			*
16			* You should have received a copy of the GNU Lesser General Public
17			* License along with FFmpeg; if not, write to the Free Software
18			* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19			*/
20
21			/**
22			* @file
23			* Calculate the Identity between two input videos.
24			*/
25
26			#include "config_components.h"
27
28			#include "libavutil/avstring.h"
29			#include "libavutil/mem.h"
30			#include "libavutil/opt.h"
31			#include "libavutil/pixdesc.h"
32			#include "avfilter.h"
33			#include "drawutils.h"
34			#include "framesync.h"
35			#include "internal.h"
36			#include "scene_sad.h"
37
38			typedef struct IdentityContext {
39			const AVClass *class;
40			FFFrameSync fs;
41			double score, min_score, max_score, score_comp[4];
42			uint64_t nb_frames;
43			int is_rgb;
44			int is_msad;
45			uint8_t rgba_map[4];
46			int max[4];
47			char comps[4];
48			int nb_components;
49			int nb_threads;
50			int planewidth[4];
51			int planeheight[4];
52			uint64_t **scores;
53			unsigned (*filter_line)(const uint8_t *buf, const uint8_t *ref, int w);
54			int (*filter_slice)(AVFilterContext *ctx, void *arg,
55			int jobnr, int nb_jobs);
56			ff_scene_sad_fn sad;
57			} IdentityContext;
58
59			#define OFFSET(x) offsetof(IdentityContext, x)
60			#define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM
61
62		✗	static unsigned identity_line_8bit(const uint8_t *main_line, const uint8_t *ref_line, int outw)
63			{
64		✗	unsigned score = 0;
65
66		✗	for (int j = 0; j < outw; j++)
67		✗	score += main_line[j] == ref_line[j];
68
69		✗	return score;
70			}
71
72		✗	static unsigned identity_line_16bit(const uint8_t *mmain_line, const uint8_t *rref_line, int outw)
73			{
74		✗	const uint16_t *main_line = (const uint16_t *)mmain_line;
75		✗	const uint16_t *ref_line = (const uint16_t *)rref_line;
76		✗	unsigned score = 0;
77
78		✗	for (int j = 0; j < outw; j++)
79		✗	score += main_line[j] == ref_line[j];
80
81		✗	return score;
82			}
83
84			typedef struct ThreadData {
85			const uint8_t *main_data[4];
86			const uint8_t *ref_data[4];
87			int main_linesize[4];
88			int ref_linesize[4];
89			int planewidth[4];
90			int planeheight[4];
91			uint64_t **score;
92			int nb_components;
93			} ThreadData;
94
95			static
96		✗	int compute_images_msad(AVFilterContext *ctx, void *arg,
97			int jobnr, int nb_jobs)
98			{
99		✗	IdentityContext *s = ctx->priv;
100		✗	ThreadData *td = arg;
101		✗	uint64_t *score = td->score[jobnr];
102
103		✗	for (int c = 0; c < td->nb_components; c++) {
104		✗	const int outw = td->planewidth[c];
105		✗	const int outh = td->planeheight[c];
106		✗	const int slice_start = (outh * jobnr) / nb_jobs;
107		✗	const int slice_end = (outh * (jobnr+1)) / nb_jobs;
108		✗	const int ref_linesize = td->ref_linesize[c];
109		✗	const int main_linesize = td->main_linesize[c];
110		✗	const uint8_t *main_line = td->main_data[c] + main_linesize * slice_start;
111		✗	const uint8_t *ref_line = td->ref_data[c] + ref_linesize * slice_start;
112		✗	uint64_t m = 0;
113
114		✗	s->sad(main_line, main_linesize, ref_line, ref_linesize,
115		✗	outw, slice_end - slice_start, &m);
116
117		✗	score[c] = m;
118			}
119
120		✗	return 0;
121			}
122
123			static
124		✗	int compute_images_identity(AVFilterContext *ctx, void *arg,
125			int jobnr, int nb_jobs)
126			{
127		✗	IdentityContext *s = ctx->priv;
128		✗	ThreadData *td = arg;
129		✗	uint64_t *score = td->score[jobnr];
130
131		✗	for (int c = 0; c < td->nb_components; c++) {
132		✗	const int outw = td->planewidth[c];
133		✗	const int outh = td->planeheight[c];
134		✗	const int slice_start = (outh * jobnr) / nb_jobs;
135		✗	const int slice_end = (outh * (jobnr+1)) / nb_jobs;
136		✗	const int ref_linesize = td->ref_linesize[c];
137		✗	const int main_linesize = td->main_linesize[c];
138		✗	const uint8_t *main_line = td->main_data[c] + main_linesize * slice_start;
139		✗	const uint8_t *ref_line = td->ref_data[c] + ref_linesize * slice_start;
140		✗	uint64_t m = 0;
141
142		✗	for (int i = slice_start; i < slice_end; i++) {
143		✗	m += s->filter_line(main_line, ref_line, outw);
144		✗	ref_line += ref_linesize;
145		✗	main_line += main_linesize;
146			}
147		✗	score[c] = m;
148			}
149
150		✗	return 0;
151			}
152
153		✗	static void set_meta(AVFilterContext *ctx,
154			AVDictionary **metadata, const char *key, char comp, float d)
155			{
156			char value[128];
157		✗	snprintf(value, sizeof(value), "%f", d);
158		✗	if (comp) {
159			char key2[128];
160		✗	snprintf(key2, sizeof(key2), "lavfi.%s.%s%s%c",
161		✗	ctx->filter->name, ctx->filter->name, key, comp);
162		✗	av_dict_set(metadata, key2, value, 0);
163			} else {
164			char key2[128];
165		✗	snprintf(key2, sizeof(key2), "lavfi.%s.%s%s",
166		✗	ctx->filter->name, ctx->filter->name, key);
167		✗	av_dict_set(metadata, key2, value, 0);
168			}
169		✗	}
170
171		✗	static int do_identity(FFFrameSync *fs)
172			{
173		✗	AVFilterContext *ctx = fs->parent;
174		✗	IdentityContext *s = ctx->priv;
175			AVFrame *master, *ref;
176		✗	double comp_score[4], score = 0.;
177		✗	uint64_t comp_sum[4] = { 0 };
178			AVDictionary **metadata;
179			ThreadData td;
180			int ret;
181
182		✗	ret = ff_framesync_dualinput_get(fs, &master, &ref);
183		✗	if (ret < 0)
184		✗	return ret;
185		✗	if (ctx->is_disabled || !ref)
186		✗	return ff_filter_frame(ctx->outputs[0], master);
187		✗	metadata = &master->metadata;
188
189		✗	td.nb_components = s->nb_components;
190		✗	td.score = s->scores;
191		✗	for (int c = 0; c < s->nb_components; c++) {
192		✗	td.main_data[c] = master->data[c];
193		✗	td.ref_data[c] = ref->data[c];
194		✗	td.main_linesize[c] = master->linesize[c];
195		✗	td.ref_linesize[c] = ref->linesize[c];
196		✗	td.planewidth[c] = s->planewidth[c];
197		✗	td.planeheight[c] = s->planeheight[c];
198			}
199
200		✗	ff_filter_execute(ctx, s->filter_slice, &td, NULL,
201		✗	FFMIN(s->planeheight[1], s->nb_threads));
202
203		✗	for (int j = 0; j < s->nb_threads; j++) {
204		✗	for (int c = 0; c < s->nb_components; c++)
205		✗	comp_sum[c] += s->scores[j][c];
206			}
207
208		✗	for (int c = 0; c < s->nb_components; c++)
209		✗	comp_score[c] = comp_sum[c] / ((double)s->planewidth[c] * s->planeheight[c]);
210
211		✗	for (int c = 0; c < s->nb_components && s->is_msad; c++)
212		✗	comp_score[c] /= (double)s->max[c];
213
214		✗	for (int c = 0; c < s->nb_components; c++)
215		✗	score += comp_score[c];
216		✗	score /= s->nb_components;
217
218		✗	s->min_score = FFMIN(s->min_score, score);
219		✗	s->max_score = FFMAX(s->max_score, score);
220
221		✗	s->score += score;
222
223		✗	for (int j = 0; j < s->nb_components; j++)
224		✗	s->score_comp[j] += comp_score[j];
225		✗	s->nb_frames++;
226
227		✗	for (int j = 0; j < s->nb_components; j++) {
228		✗	int c = s->is_rgb ? s->rgba_map[j] : j;
229		✗	set_meta(ctx, metadata, ".", s->comps[j], comp_score[c]);
230			}
231		✗	set_meta(ctx, metadata, "_avg", 0, score);
232
233		✗	return ff_filter_frame(ctx->outputs[0], master);
234			}
235
236		✗	static av_cold int init(AVFilterContext *ctx)
237			{
238		✗	IdentityContext *s = ctx->priv;
239
240		✗	s->fs.on_event = do_identity;
241
242		✗	return 0;
243			}
244
245			static const enum AVPixelFormat pix_fmts[] = {
246			AV_PIX_FMT_GRAY8, AV_PIX_FMT_GRAY9, AV_PIX_FMT_GRAY10, AV_PIX_FMT_GRAY12, AV_PIX_FMT_GRAY14, AV_PIX_FMT_GRAY16,
247			#define PF_NOALPHA(suf) AV_PIX_FMT_YUV420##suf, AV_PIX_FMT_YUV422##suf, AV_PIX_FMT_YUV444##suf
248			#define PF_ALPHA(suf) AV_PIX_FMT_YUVA420##suf, AV_PIX_FMT_YUVA422##suf, AV_PIX_FMT_YUVA444##suf
249			#define PF(suf) PF_NOALPHA(suf), PF_ALPHA(suf)
250			PF(P), PF(P9), PF(P10), PF_NOALPHA(P12), PF_NOALPHA(P14), PF(P16),
251			AV_PIX_FMT_YUV440P, AV_PIX_FMT_YUV411P, AV_PIX_FMT_YUV410P,
252			AV_PIX_FMT_YUVJ411P, AV_PIX_FMT_YUVJ420P, AV_PIX_FMT_YUVJ422P,
253			AV_PIX_FMT_YUVJ440P, AV_PIX_FMT_YUVJ444P,
254			AV_PIX_FMT_GBRP, AV_PIX_FMT_GBRP9, AV_PIX_FMT_GBRP10,
255			AV_PIX_FMT_GBRP12, AV_PIX_FMT_GBRP14, AV_PIX_FMT_GBRP16,
256			AV_PIX_FMT_GBRAP, AV_PIX_FMT_GBRAP10, AV_PIX_FMT_GBRAP12, AV_PIX_FMT_GBRAP16,
257			AV_PIX_FMT_NONE
258			};
259
260		✗	static int config_input_ref(AVFilterLink *inlink)
261			{
262		✗	const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format);
263		✗	AVFilterContext *ctx = inlink->dst;
264		✗	IdentityContext *s = ctx->priv;
265
266		✗	s->nb_threads = ff_filter_get_nb_threads(ctx);
267		✗	s->nb_components = desc->nb_components;
268		✗	if (ctx->inputs[0]->w != ctx->inputs[1]->w ||
269		✗	ctx->inputs[0]->h != ctx->inputs[1]->h) {
270		✗	av_log(ctx, AV_LOG_ERROR, "Width and height of input videos must be same.\n");
271		✗	return AVERROR(EINVAL);
272			}
273
274		✗	s->is_rgb = ff_fill_rgba_map(s->rgba_map, inlink->format) >= 0;
275		✗	s->comps[0] = s->is_rgb ? 'R' : 'Y' ;
276		✗	s->comps[1] = s->is_rgb ? 'G' : 'U' ;
277		✗	s->comps[2] = s->is_rgb ? 'B' : 'V' ;
278		✗	s->comps[3] = 'A';
279
280		✗	s->planeheight[1] = s->planeheight[2] = AV_CEIL_RSHIFT(inlink->h, desc->log2_chroma_h);
281		✗	s->planeheight[0] = s->planeheight[3] = inlink->h;
282		✗	s->planewidth[1] = s->planewidth[2] = AV_CEIL_RSHIFT(inlink->w, desc->log2_chroma_w);
283		✗	s->planewidth[0] = s->planewidth[3] = inlink->w;
284
285		✗	s->scores = av_calloc(s->nb_threads, sizeof(*s->scores));
286		✗	if (!s->scores)
287		✗	return AVERROR(ENOMEM);
288
289		✗	for (int t = 0; t < s->nb_threads; t++) {
290		✗	s->scores[t] = av_calloc(s->nb_components, sizeof(*s->scores[0]));
291		✗	if (!s->scores[t])
292		✗	return AVERROR(ENOMEM);
293			}
294
295		✗	s->min_score = +INFINITY;
296		✗	s->max_score = -INFINITY;
297
298		✗	s->max[0] = (1 << desc->comp[0].depth) - 1;
299		✗	s->max[1] = (1 << desc->comp[1].depth) - 1;
300		✗	s->max[2] = (1 << desc->comp[2].depth) - 1;
301		✗	s->max[3] = (1 << desc->comp[3].depth) - 1;
302
303		✗	s->is_msad = !strcmp(ctx->filter->name, "msad");
304		✗	s->filter_slice = !s->is_msad ? compute_images_identity : compute_images_msad;
305		✗	s->filter_line = desc->comp[0].depth > 8 ? identity_line_16bit : identity_line_8bit;
306
307		✗	s->sad = ff_scene_sad_get_fn(desc->comp[0].depth <= 8 ? 8 : 16);
308		✗	if (!s->sad)
309		✗	return AVERROR(EINVAL);
310
311		✗	return 0;
312			}
313
314		✗	static int config_output(AVFilterLink *outlink)
315			{
316		✗	AVFilterContext *ctx = outlink->src;
317		✗	IdentityContext *s = ctx->priv;
318		✗	AVFilterLink *mainlink = ctx->inputs[0];
319			int ret;
320
321		✗	ret = ff_framesync_init_dualinput(&s->fs, ctx);
322		✗	if (ret < 0)
323		✗	return ret;
324		✗	outlink->w = mainlink->w;
325		✗	outlink->h = mainlink->h;
326		✗	outlink->time_base = mainlink->time_base;
327		✗	outlink->sample_aspect_ratio = mainlink->sample_aspect_ratio;
328		✗	outlink->frame_rate = mainlink->frame_rate;
329		✗	if ((ret = ff_framesync_configure(&s->fs)) < 0)
330		✗	return ret;
331
332		✗	outlink->time_base = s->fs.time_base;
333
334		✗	if (av_cmp_q(mainlink->time_base, outlink->time_base) ||
335		✗	av_cmp_q(ctx->inputs[1]->time_base, outlink->time_base))
336		✗	av_log(ctx, AV_LOG_WARNING, "not matching timebases found between first input: %d/%d and second input %d/%d, results may be incorrect!\n",
337			mainlink->time_base.num, mainlink->time_base.den,
338		✗	ctx->inputs[1]->time_base.num, ctx->inputs[1]->time_base.den);
339
340		✗	return 0;
341			}
342
343		✗	static int activate(AVFilterContext *ctx)
344			{
345		✗	IdentityContext *s = ctx->priv;
346		✗	return ff_framesync_activate(&s->fs);
347			}
348
349		✗	static av_cold void uninit(AVFilterContext *ctx)
350			{
351		✗	IdentityContext *s = ctx->priv;
352
353		✗	if (s->nb_frames > 0) {
354			char buf[256];
355
356		✗	buf[0] = 0;
357		✗	for (int j = 0; j < s->nb_components; j++) {
358		✗	int c = s->is_rgb ? s->rgba_map[j] : j;
359		✗	av_strlcatf(buf, sizeof(buf), " %c:%f", s->comps[j], s->score_comp[c] / s->nb_frames);
360			}
361
362		✗	av_log(ctx, AV_LOG_INFO, "%s%s average:%f min:%f max:%f\n",
363		✗	ctx->filter->name,
364			buf,
365		✗	s->score / s->nb_frames,
366			s->min_score,
367			s->max_score);
368			}
369
370		✗	ff_framesync_uninit(&s->fs);
371		✗	for (int t = 0; t < s->nb_threads && s->scores; t++)
372		✗	av_freep(&s->scores[t]);
373		✗	av_freep(&s->scores);
374		✗	}
375
376			static const AVFilterPad identity_inputs[] = {
377			{
378			.name = "main",
379			.type = AVMEDIA_TYPE_VIDEO,
380			},{
381			.name = "reference",
382			.type = AVMEDIA_TYPE_VIDEO,
383			.config_props = config_input_ref,
384			},
385			};
386
387			static const AVFilterPad identity_outputs[] = {
388			{
389			.name = "default",
390			.type = AVMEDIA_TYPE_VIDEO,
391			.config_props = config_output,
392			},
393			};
394
395			static const AVOption options[] = {
396			{ NULL }
397			};
398
399			#if CONFIG_IDENTITY_FILTER
400
401			#define identity_options options
402		✗	FRAMESYNC_DEFINE_CLASS(identity, IdentityContext, fs);
403
404			const AVFilter ff_vf_identity = {
405			.name = "identity",
406			.description = NULL_IF_CONFIG_SMALL("Calculate the Identity between two video streams."),
407			.preinit = identity_framesync_preinit,
408			.init = init,
409			.uninit = uninit,
410			.activate = activate,
411			.priv_size = sizeof(IdentityContext),
412			.priv_class = &identity_class,
413			FILTER_INPUTS(identity_inputs),
414			FILTER_OUTPUTS(identity_outputs),
415			FILTER_PIXFMTS_ARRAY(pix_fmts),
416			.flags = AVFILTER_FLAG_SUPPORT_TIMELINE_INTERNAL |
417			AVFILTER_FLAG_SLICE_THREADS |
418			AVFILTER_FLAG_METADATA_ONLY,
419			};
420
421			#endif /* CONFIG_IDENTITY_FILTER */
422
423			#if CONFIG_MSAD_FILTER
424
425			#define msad_options options
426		✗	FRAMESYNC_DEFINE_CLASS(msad, IdentityContext, fs);
427
428			const AVFilter ff_vf_msad = {
429			.name = "msad",
430			.description = NULL_IF_CONFIG_SMALL("Calculate the MSAD between two video streams."),
431			.preinit = msad_framesync_preinit,
432			.init = init,
433			.uninit = uninit,
434			.activate = activate,
435			.priv_size = sizeof(IdentityContext),
436			.priv_class = &msad_class,
437			FILTER_INPUTS(identity_inputs),
438			FILTER_OUTPUTS(identity_outputs),
439			FILTER_PIXFMTS_ARRAY(pix_fmts),
440			.flags = AVFILTER_FLAG_SUPPORT_TIMELINE_INTERNAL |
441			AVFILTER_FLAG_SLICE_THREADS |
442			AVFILTER_FLAG_METADATA_ONLY,
443			};
444
445			#endif /* CONFIG_MSAD_FILTER */
446