FFmpeg coverage


Directory: ../../../ffmpeg/
File: src/libavfilter/vf_psnr.c
Date: 2024-07-17 14:05:47
Exec Total Coverage
Lines: 156 216 72.2%
Functions: 12 14 85.7%
Branches: 64 124 51.6%

Line Branch Exec Source
1 /*
2 * Copyright (c) 2011 Roger Pau Monné <roger.pau@entel.upc.edu>
3 * Copyright (c) 2011 Stefano Sabatini
4 * Copyright (c) 2013 Paul B Mahol
5 *
6 * This file is part of FFmpeg.
7 *
8 * FFmpeg is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU Lesser General Public
10 * License as published by the Free Software Foundation; either
11 * version 2.1 of the License, or (at your option) any later version.
12 *
13 * FFmpeg is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * Lesser General Public License for more details.
17 *
18 * You should have received a copy of the GNU Lesser General Public
19 * License along with FFmpeg; if not, write to the Free Software
20 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
21 */
22
23 /**
24 * @file
25 * Calculate the PSNR between two input videos.
26 */
27
28 #include "libavutil/avstring.h"
29 #include "libavutil/file_open.h"
30 #include "libavutil/mem.h"
31 #include "libavutil/opt.h"
32 #include "libavutil/pixdesc.h"
33 #include "avfilter.h"
34 #include "drawutils.h"
35 #include "framesync.h"
36 #include "internal.h"
37 #include "psnr.h"
38
39 typedef struct PSNRContext {
40 const AVClass *class;
41 FFFrameSync fs;
42 double mse, min_mse, max_mse, mse_comp[4];
43 uint64_t nb_frames;
44 FILE *stats_file;
45 char *stats_file_str;
46 int stats_version;
47 int stats_header_written;
48 int stats_add_max;
49 int max[4], average_max;
50 int is_rgb;
51 uint8_t rgba_map[4];
52 char comps[4];
53 int nb_components;
54 int nb_threads;
55 int planewidth[4];
56 int planeheight[4];
57 double planeweight[4];
58 uint64_t **score;
59 PSNRDSPContext dsp;
60 } PSNRContext;
61
62 #define OFFSET(x) offsetof(PSNRContext, x)
63 #define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM
64
65 static const AVOption psnr_options[] = {
66 {"stats_file", "Set file where to store per-frame difference information", OFFSET(stats_file_str), AV_OPT_TYPE_STRING, {.str=NULL}, 0, 0, FLAGS },
67 {"f", "Set file where to store per-frame difference information", OFFSET(stats_file_str), AV_OPT_TYPE_STRING, {.str=NULL}, 0, 0, FLAGS },
68 {"stats_version", "Set the format version for the stats file.", OFFSET(stats_version), AV_OPT_TYPE_INT, {.i64=1}, 1, 2, FLAGS },
69 {"output_max", "Add raw stats (max values) to the output log.", OFFSET(stats_add_max), AV_OPT_TYPE_BOOL, {.i64=0}, 0, 1, FLAGS},
70 { NULL }
71 };
72
73
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24 FRAMESYNC_DEFINE_CLASS(psnr, PSNRContext, fs);
74
75 1745858 static inline unsigned pow_2(unsigned base)
76 {
77 1745858 return base*base;
78 }
79
80 98 static inline double get_psnr(double mse, uint64_t nb_frames, int max)
81 {
82 98 return 10.0 * log10(pow_2(max) / (mse / nb_frames));
83 }
84
85 7920 static uint64_t sse_line_8bit(const uint8_t *main_line, const uint8_t *ref_line, int outw)
86 {
87 int j;
88 7920 unsigned m2 = 0;
89
90
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1753680 for (j = 0; j < outw; j++)
91 1745760 m2 += pow_2(main_line[j] - ref_line[j]);
92
93 7920 return m2;
94 }
95
96 static uint64_t sse_line_16bit(const uint8_t *_main_line, const uint8_t *_ref_line, int outw)
97 {
98 int j;
99 uint64_t m2 = 0;
100 const uint16_t *main_line = (const uint16_t *) _main_line;
101 const uint16_t *ref_line = (const uint16_t *) _ref_line;
102
103 for (j = 0; j < outw; j++)
104 m2 += pow_2(main_line[j] - ref_line[j]);
105
106 return m2;
107 }
108
109 typedef struct ThreadData {
110 const uint8_t *main_data[4];
111 const uint8_t *ref_data[4];
112 int main_linesize[4];
113 int ref_linesize[4];
114 int planewidth[4];
115 int planeheight[4];
116 uint64_t **score;
117 int nb_components;
118 PSNRDSPContext *dsp;
119 } ThreadData;
120
121 static
122 126 int compute_images_mse(AVFilterContext *ctx, void *arg,
123 int jobnr, int nb_jobs)
124 {
125 126 ThreadData *td = arg;
126 126 uint64_t *score = td->score[jobnr];
127
128
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531 for (int c = 0; c < td->nb_components; c++) {
129 405 const int outw = td->planewidth[c];
130 405 const int outh = td->planeheight[c];
131 405 const int slice_start = (outh * jobnr) / nb_jobs;
132 405 const int slice_end = (outh * (jobnr+1)) / nb_jobs;
133 405 const int ref_linesize = td->ref_linesize[c];
134 405 const int main_linesize = td->main_linesize[c];
135 405 const uint8_t *main_line = td->main_data[c] + main_linesize * slice_start;
136 405 const uint8_t *ref_line = td->ref_data[c] + ref_linesize * slice_start;
137 405 uint64_t m = 0;
138
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8325 for (int i = slice_start; i < slice_end; i++) {
139 7920 m += td->dsp->sse_line(main_line, ref_line, outw);
140 7920 ref_line += ref_linesize;
141 7920 main_line += main_linesize;
142 }
143 405 score[c] = m;
144 }
145
146 126 return 0;
147 }
148
149 118 static void set_meta(AVDictionary **metadata, const char *key, char comp, float d)
150 {
151 char value[128];
152 118 snprintf(value, sizeof(value), "%f", d);
153
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118 if (comp) {
154 char key2[128];
155 90 snprintf(key2, sizeof(key2), "%s%c", key, comp);
156 90 av_dict_set(metadata, key2, value, 0);
157 } else {
158 28 av_dict_set(metadata, key, value, 0);
159 }
160 118 }
161
162 14 static int do_psnr(FFFrameSync *fs)
163 {
164 14 AVFilterContext *ctx = fs->parent;
165 14 PSNRContext *s = ctx->priv;
166 AVFrame *master, *ref;
167 14 double comp_mse[4], mse = 0.;
168 14 uint64_t comp_sum[4] = { 0 };
169 AVDictionary **metadata;
170 ThreadData td;
171 int ret;
172
173 14 ret = ff_framesync_dualinput_get(fs, &master, &ref);
174
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14 if (ret < 0)
175 return ret;
176
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14 if (ctx->is_disabled || !ref)
177 return ff_filter_frame(ctx->outputs[0], master);
178 14 metadata = &master->metadata;
179
180 14 td.nb_components = s->nb_components;
181 14 td.dsp = &s->dsp;
182 14 td.score = s->score;
183
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59 for (int c = 0; c < s->nb_components; c++) {
184 45 td.main_data[c] = master->data[c];
185 45 td.ref_data[c] = ref->data[c];
186 45 td.main_linesize[c] = master->linesize[c];
187 45 td.ref_linesize[c] = ref->linesize[c];
188 45 td.planewidth[c] = s->planewidth[c];
189 45 td.planeheight[c] = s->planeheight[c];
190 }
191
192
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14 if (master->color_range != ref->color_range) {
193 av_log(ctx, AV_LOG_WARNING, "master and reference "
194 "frames use different color ranges (%s != %s)\n",
195 av_color_range_name(master->color_range),
196 av_color_range_name(ref->color_range));
197 }
198
199 14 ff_filter_execute(ctx, compute_images_mse, &td, NULL,
200 14 FFMIN(s->planeheight[1], s->nb_threads));
201
202
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140 for (int j = 0; j < s->nb_threads; j++) {
203
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531 for (int c = 0; c < s->nb_components; c++)
204 405 comp_sum[c] += s->score[j][c];
205 }
206
207
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59 for (int c = 0; c < s->nb_components; c++)
208 45 comp_mse[c] = comp_sum[c] / ((double)s->planewidth[c] * s->planeheight[c]);
209
210
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59 for (int c = 0; c < s->nb_components; c++)
211 45 mse += comp_mse[c] * s->planeweight[c];
212
213
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14 s->min_mse = FFMIN(s->min_mse, mse);
214
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14 s->max_mse = FFMAX(s->max_mse, mse);
215
216 14 s->mse += mse;
217
218
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59 for (int j = 0; j < s->nb_components; j++)
219 45 s->mse_comp[j] += comp_mse[j];
220 14 s->nb_frames++;
221
222
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59 for (int j = 0; j < s->nb_components; j++) {
223
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45 int c = s->is_rgb ? s->rgba_map[j] : j;
224 45 set_meta(metadata, "lavfi.psnr.mse.", s->comps[j], comp_mse[c]);
225 45 set_meta(metadata, "lavfi.psnr.psnr.", s->comps[j], get_psnr(comp_mse[c], 1, s->max[c]));
226 }
227 14 set_meta(metadata, "lavfi.psnr.mse_avg", 0, mse);
228 14 set_meta(metadata, "lavfi.psnr.psnr_avg", 0, get_psnr(mse, 1, s->average_max));
229
230
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14 if (s->stats_file) {
231 if (s->stats_version == 2 && !s->stats_header_written) {
232 fprintf(s->stats_file, "psnr_log_version:2 fields:n");
233 fprintf(s->stats_file, ",mse_avg");
234 for (int j = 0; j < s->nb_components; j++) {
235 fprintf(s->stats_file, ",mse_%c", s->comps[j]);
236 }
237 fprintf(s->stats_file, ",psnr_avg");
238 for (int j = 0; j < s->nb_components; j++) {
239 fprintf(s->stats_file, ",psnr_%c", s->comps[j]);
240 }
241 if (s->stats_add_max) {
242 fprintf(s->stats_file, ",max_avg");
243 for (int j = 0; j < s->nb_components; j++) {
244 fprintf(s->stats_file, ",max_%c", s->comps[j]);
245 }
246 }
247 fprintf(s->stats_file, "\n");
248 s->stats_header_written = 1;
249 }
250 fprintf(s->stats_file, "n:%"PRId64" mse_avg:%0.2f ", s->nb_frames, mse);
251 for (int j = 0; j < s->nb_components; j++) {
252 int c = s->is_rgb ? s->rgba_map[j] : j;
253 fprintf(s->stats_file, "mse_%c:%0.2f ", s->comps[j], comp_mse[c]);
254 }
255 fprintf(s->stats_file, "psnr_avg:%0.2f ", get_psnr(mse, 1, s->average_max));
256 for (int j = 0; j < s->nb_components; j++) {
257 int c = s->is_rgb ? s->rgba_map[j] : j;
258 fprintf(s->stats_file, "psnr_%c:%0.2f ", s->comps[j],
259 get_psnr(comp_mse[c], 1, s->max[c]));
260 }
261 if (s->stats_version == 2 && s->stats_add_max) {
262 fprintf(s->stats_file, "max_avg:%d ", s->average_max);
263 for (int j = 0; j < s->nb_components; j++) {
264 int c = s->is_rgb ? s->rgba_map[j] : j;
265 fprintf(s->stats_file, "max_%c:%d ", s->comps[j], s->max[c]);
266 }
267 }
268 fprintf(s->stats_file, "\n");
269 }
270
271 14 return ff_filter_frame(ctx->outputs[0], master);
272 }
273
274 12 static av_cold int init(AVFilterContext *ctx)
275 {
276 12 PSNRContext *s = ctx->priv;
277
278 12 s->min_mse = +INFINITY;
279 12 s->max_mse = -INFINITY;
280
281
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12 if (s->stats_file_str) {
282 if (s->stats_version < 2 && s->stats_add_max) {
283 av_log(ctx, AV_LOG_ERROR,
284 "stats_add_max was specified but stats_version < 2.\n" );
285 return AVERROR(EINVAL);
286 }
287 if (!strcmp(s->stats_file_str, "-")) {
288 s->stats_file = stdout;
289 } else {
290 s->stats_file = avpriv_fopen_utf8(s->stats_file_str, "w");
291 if (!s->stats_file) {
292 int err = AVERROR(errno);
293 char buf[128];
294 av_strerror(err, buf, sizeof(buf));
295 av_log(ctx, AV_LOG_ERROR, "Could not open stats file %s: %s\n",
296 s->stats_file_str, buf);
297 return err;
298 }
299 }
300 }
301
302 12 s->fs.on_event = do_psnr;
303 12 return 0;
304 }
305
306 static const enum AVPixelFormat pix_fmts[] = {
307 AV_PIX_FMT_GRAY8, AV_PIX_FMT_GRAY9, AV_PIX_FMT_GRAY10, AV_PIX_FMT_GRAY12, AV_PIX_FMT_GRAY14, AV_PIX_FMT_GRAY16,
308 #define PF_NOALPHA(suf) AV_PIX_FMT_YUV420##suf, AV_PIX_FMT_YUV422##suf, AV_PIX_FMT_YUV444##suf
309 #define PF_ALPHA(suf) AV_PIX_FMT_YUVA420##suf, AV_PIX_FMT_YUVA422##suf, AV_PIX_FMT_YUVA444##suf
310 #define PF(suf) PF_NOALPHA(suf), PF_ALPHA(suf)
311 PF(P), PF(P9), PF(P10), PF_NOALPHA(P12), PF_NOALPHA(P14), PF(P16),
312 AV_PIX_FMT_YUV440P, AV_PIX_FMT_YUV411P, AV_PIX_FMT_YUV410P,
313 AV_PIX_FMT_YUVJ411P, AV_PIX_FMT_YUVJ420P, AV_PIX_FMT_YUVJ422P,
314 AV_PIX_FMT_YUVJ440P, AV_PIX_FMT_YUVJ444P,
315 AV_PIX_FMT_GBRP, AV_PIX_FMT_GBRP9, AV_PIX_FMT_GBRP10,
316 AV_PIX_FMT_GBRP12, AV_PIX_FMT_GBRP14, AV_PIX_FMT_GBRP16,
317 AV_PIX_FMT_GBRAP, AV_PIX_FMT_GBRAP10, AV_PIX_FMT_GBRAP12, AV_PIX_FMT_GBRAP16,
318 AV_PIX_FMT_NONE
319 };
320
321 6 static int config_input_ref(AVFilterLink *inlink)
322 {
323 6 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format);
324 6 AVFilterContext *ctx = inlink->dst;
325 6 PSNRContext *s = ctx->priv;
326 double average_max;
327 unsigned sum;
328 int j;
329
330 6 s->nb_threads = ff_filter_get_nb_threads(ctx);
331 6 s->nb_components = desc->nb_components;
332
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6 if (ctx->inputs[0]->w != ctx->inputs[1]->w ||
333
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6 ctx->inputs[0]->h != ctx->inputs[1]->h) {
334 av_log(ctx, AV_LOG_ERROR, "Width and height of input videos must be same.\n");
335 return AVERROR(EINVAL);
336 }
337
338 6 s->max[0] = (1 << desc->comp[0].depth) - 1;
339 6 s->max[1] = (1 << desc->comp[1].depth) - 1;
340 6 s->max[2] = (1 << desc->comp[2].depth) - 1;
341 6 s->max[3] = (1 << desc->comp[3].depth) - 1;
342
343 6 s->is_rgb = ff_fill_rgba_map(s->rgba_map, inlink->format) >= 0;
344
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6 s->comps[0] = s->is_rgb ? 'r' : 'y' ;
345
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6 s->comps[1] = s->is_rgb ? 'g' : 'u' ;
346
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6 s->comps[2] = s->is_rgb ? 'b' : 'v' ;
347 6 s->comps[3] = 'a';
348
349 6 s->planeheight[1] = s->planeheight[2] = AV_CEIL_RSHIFT(inlink->h, desc->log2_chroma_h);
350 6 s->planeheight[0] = s->planeheight[3] = inlink->h;
351 6 s->planewidth[1] = s->planewidth[2] = AV_CEIL_RSHIFT(inlink->w, desc->log2_chroma_w);
352 6 s->planewidth[0] = s->planewidth[3] = inlink->w;
353 6 sum = 0;
354
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27 for (j = 0; j < s->nb_components; j++)
355 21 sum += s->planeheight[j] * s->planewidth[j];
356 6 average_max = 0;
357
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27 for (j = 0; j < s->nb_components; j++) {
358 21 s->planeweight[j] = (double) s->planeheight[j] * s->planewidth[j] / sum;
359 21 average_max += s->max[j] * s->planeweight[j];
360 }
361 6 s->average_max = lrint(average_max);
362
363
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6 s->dsp.sse_line = desc->comp[0].depth > 8 ? sse_line_16bit : sse_line_8bit;
364 #if ARCH_X86
365 6 ff_psnr_init_x86(&s->dsp, desc->comp[0].depth);
366 #endif
367
368 6 s->score = av_calloc(s->nb_threads, sizeof(*s->score));
369
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6 if (!s->score)
370 return AVERROR(ENOMEM);
371
372
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60 for (int t = 0; t < s->nb_threads; t++) {
373 54 s->score[t] = av_calloc(s->nb_components, sizeof(*s->score[0]));
374
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54 if (!s->score[t])
375 return AVERROR(ENOMEM);
376 }
377
378 6 return 0;
379 }
380
381 6 static int config_output(AVFilterLink *outlink)
382 {
383 6 AVFilterContext *ctx = outlink->src;
384 6 PSNRContext *s = ctx->priv;
385 6 AVFilterLink *mainlink = ctx->inputs[0];
386 int ret;
387
388 6 ret = ff_framesync_init_dualinput(&s->fs, ctx);
389
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6 if (ret < 0)
390 return ret;
391 6 outlink->w = mainlink->w;
392 6 outlink->h = mainlink->h;
393 6 outlink->time_base = mainlink->time_base;
394 6 outlink->sample_aspect_ratio = mainlink->sample_aspect_ratio;
395 6 outlink->frame_rate = mainlink->frame_rate;
396
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6 if ((ret = ff_framesync_configure(&s->fs)) < 0)
397 return ret;
398
399 6 outlink->time_base = s->fs.time_base;
400
401
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12 if (av_cmp_q(mainlink->time_base, outlink->time_base) ||
402 6 av_cmp_q(ctx->inputs[1]->time_base, outlink->time_base))
403 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",
404 mainlink->time_base.num, mainlink->time_base.den,
405 ctx->inputs[1]->time_base.num, ctx->inputs[1]->time_base.den);
406
407 6 return 0;
408 }
409
410 58 static int activate(AVFilterContext *ctx)
411 {
412 58 PSNRContext *s = ctx->priv;
413 58 return ff_framesync_activate(&s->fs);
414 }
415
416 12 static av_cold void uninit(AVFilterContext *ctx)
417 {
418 12 PSNRContext *s = ctx->priv;
419
420
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12 if (s->nb_frames > 0) {
421 int j;
422 char buf[256];
423
424 6 buf[0] = 0;
425
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27 for (j = 0; j < s->nb_components; j++) {
426
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21 int c = s->is_rgb ? s->rgba_map[j] : j;
427 21 av_strlcatf(buf, sizeof(buf), " %c:%f", s->comps[j],
428 get_psnr(s->mse_comp[c], s->nb_frames, s->max[c]));
429 }
430 6 av_log(ctx, AV_LOG_INFO, "PSNR%s average:%f min:%f max:%f\n",
431 buf,
432 get_psnr(s->mse, s->nb_frames, s->average_max),
433 get_psnr(s->max_mse, 1, s->average_max),
434 get_psnr(s->min_mse, 1, s->average_max));
435 }
436
437 12 ff_framesync_uninit(&s->fs);
438
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66 for (int t = 0; t < s->nb_threads && s->score; t++)
439 54 av_freep(&s->score[t]);
440 12 av_freep(&s->score);
441
442
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12 if (s->stats_file && s->stats_file != stdout)
443 fclose(s->stats_file);
444 12 }
445
446 static const AVFilterPad psnr_inputs[] = {
447 {
448 .name = "main",
449 .type = AVMEDIA_TYPE_VIDEO,
450 },{
451 .name = "reference",
452 .type = AVMEDIA_TYPE_VIDEO,
453 .config_props = config_input_ref,
454 },
455 };
456
457 static const AVFilterPad psnr_outputs[] = {
458 {
459 .name = "default",
460 .type = AVMEDIA_TYPE_VIDEO,
461 .config_props = config_output,
462 },
463 };
464
465 const AVFilter ff_vf_psnr = {
466 .name = "psnr",
467 .description = NULL_IF_CONFIG_SMALL("Calculate the PSNR between two video streams."),
468 .preinit = psnr_framesync_preinit,
469 .init = init,
470 .uninit = uninit,
471 .activate = activate,
472 .priv_size = sizeof(PSNRContext),
473 .priv_class = &psnr_class,
474 FILTER_INPUTS(psnr_inputs),
475 FILTER_OUTPUTS(psnr_outputs),
476 FILTER_PIXFMTS_ARRAY(pix_fmts),
477 .flags = AVFILTER_FLAG_SUPPORT_TIMELINE_INTERNAL |
478 AVFILTER_FLAG_SLICE_THREADS |
479 AVFILTER_FLAG_METADATA_ONLY,
480 };
481