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path: root/libavfilter/vf_psnr.c (plain)
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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 * Caculate the PSNR between two input videos.
26 */
27
28#include "libavutil/avstring.h"
29#include "libavutil/opt.h"
30#include "libavutil/pixdesc.h"
31#include "avfilter.h"
32#include "dualinput.h"
33#include "drawutils.h"
34#include "formats.h"
35#include "internal.h"
36#include "psnr.h"
37#include "video.h"
38
39typedef struct PSNRContext {
40 const AVClass *class;
41 FFDualInputContext dinput;
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 planewidth[4];
55 int planeheight[4];
56 double planeweight[4];
57 PSNRDSPContext dsp;
58} PSNRContext;
59
60#define OFFSET(x) offsetof(PSNRContext, x)
61#define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM
62
63static const AVOption psnr_options[] = {
64 {"stats_file", "Set file where to store per-frame difference information", OFFSET(stats_file_str), AV_OPT_TYPE_STRING, {.str=NULL}, 0, 0, FLAGS },
65 {"f", "Set file where to store per-frame difference information", OFFSET(stats_file_str), AV_OPT_TYPE_STRING, {.str=NULL}, 0, 0, FLAGS },
66 {"stats_version", "Set the format version for the stats file.", OFFSET(stats_version), AV_OPT_TYPE_INT, {.i64=1}, 1, 2, FLAGS },
67 {"output_max", "Add raw stats (max values) to the output log.", OFFSET(stats_add_max), AV_OPT_TYPE_BOOL, {.i64=0}, 0, 1, FLAGS},
68 { NULL }
69};
70
71AVFILTER_DEFINE_CLASS(psnr);
72
73static inline unsigned pow_2(unsigned base)
74{
75 return base*base;
76}
77
78static inline double get_psnr(double mse, uint64_t nb_frames, int max)
79{
80 return 10.0 * log10(pow_2(max) / (mse / nb_frames));
81}
82
83static uint64_t sse_line_8bit(const uint8_t *main_line, const uint8_t *ref_line, int outw)
84{
85 int j;
86 unsigned m2 = 0;
87
88 for (j = 0; j < outw; j++)
89 m2 += pow_2(main_line[j] - ref_line[j]);
90
91 return m2;
92}
93
94static uint64_t sse_line_16bit(const uint8_t *_main_line, const uint8_t *_ref_line, int outw)
95{
96 int j;
97 uint64_t m2 = 0;
98 const uint16_t *main_line = (const uint16_t *) _main_line;
99 const uint16_t *ref_line = (const uint16_t *) _ref_line;
100
101 for (j = 0; j < outw; j++)
102 m2 += pow_2(main_line[j] - ref_line[j]);
103
104 return m2;
105}
106
107static inline
108void compute_images_mse(PSNRContext *s,
109 const uint8_t *main_data[4], const int main_linesizes[4],
110 const uint8_t *ref_data[4], const int ref_linesizes[4],
111 int w, int h, double mse[4])
112{
113 int i, c;
114
115 for (c = 0; c < s->nb_components; c++) {
116 const int outw = s->planewidth[c];
117 const int outh = s->planeheight[c];
118 const uint8_t *main_line = main_data[c];
119 const uint8_t *ref_line = ref_data[c];
120 const int ref_linesize = ref_linesizes[c];
121 const int main_linesize = main_linesizes[c];
122 uint64_t m = 0;
123 for (i = 0; i < outh; i++) {
124 m += s->dsp.sse_line(main_line, ref_line, outw);
125 ref_line += ref_linesize;
126 main_line += main_linesize;
127 }
128 mse[c] = m / (double)(outw * outh);
129 }
130}
131
132static void set_meta(AVDictionary **metadata, const char *key, char comp, float d)
133{
134 char value[128];
135 snprintf(value, sizeof(value), "%0.2f", d);
136 if (comp) {
137 char key2[128];
138 snprintf(key2, sizeof(key2), "%s%c", key, comp);
139 av_dict_set(metadata, key2, value, 0);
140 } else {
141 av_dict_set(metadata, key, value, 0);
142 }
143}
144
145static AVFrame *do_psnr(AVFilterContext *ctx, AVFrame *main,
146 const AVFrame *ref)
147{
148 PSNRContext *s = ctx->priv;
149 double comp_mse[4], mse = 0;
150 int j, c;
151 AVDictionary **metadata = avpriv_frame_get_metadatap(main);
152
153 compute_images_mse(s, (const uint8_t **)main->data, main->linesize,
154 (const uint8_t **)ref->data, ref->linesize,
155 main->width, main->height, comp_mse);
156
157 for (j = 0; j < s->nb_components; j++)
158 mse += comp_mse[j] * s->planeweight[j];
159
160 s->min_mse = FFMIN(s->min_mse, mse);
161 s->max_mse = FFMAX(s->max_mse, mse);
162
163 s->mse += mse;
164 for (j = 0; j < s->nb_components; j++)
165 s->mse_comp[j] += comp_mse[j];
166 s->nb_frames++;
167
168 for (j = 0; j < s->nb_components; j++) {
169 c = s->is_rgb ? s->rgba_map[j] : j;
170 set_meta(metadata, "lavfi.psnr.mse.", s->comps[j], comp_mse[c]);
171 set_meta(metadata, "lavfi.psnr.psnr.", s->comps[j], get_psnr(comp_mse[c], 1, s->max[c]));
172 }
173 set_meta(metadata, "lavfi.psnr.mse_avg", 0, mse);
174 set_meta(metadata, "lavfi.psnr.psnr_avg", 0, get_psnr(mse, 1, s->average_max));
175
176 if (s->stats_file) {
177 if (s->stats_version == 2 && !s->stats_header_written) {
178 fprintf(s->stats_file, "psnr_log_version:2 fields:n");
179 fprintf(s->stats_file, ",mse_avg");
180 for (j = 0; j < s->nb_components; j++) {
181 fprintf(s->stats_file, ",mse_%c", s->comps[j]);
182 }
183 fprintf(s->stats_file, ",psnr_avg");
184 for (j = 0; j < s->nb_components; j++) {
185 fprintf(s->stats_file, ",psnr_%c", s->comps[j]);
186 }
187 if (s->stats_add_max) {
188 fprintf(s->stats_file, ",max_avg");
189 for (j = 0; j < s->nb_components; j++) {
190 fprintf(s->stats_file, ",max_%c", s->comps[j]);
191 }
192 }
193 fprintf(s->stats_file, "\n");
194 s->stats_header_written = 1;
195 }
196 fprintf(s->stats_file, "n:%"PRId64" mse_avg:%0.2f ", s->nb_frames, mse);
197 for (j = 0; j < s->nb_components; j++) {
198 c = s->is_rgb ? s->rgba_map[j] : j;
199 fprintf(s->stats_file, "mse_%c:%0.2f ", s->comps[j], comp_mse[c]);
200 }
201 fprintf(s->stats_file, "psnr_avg:%0.2f ", get_psnr(mse, 1, s->average_max));
202 for (j = 0; j < s->nb_components; j++) {
203 c = s->is_rgb ? s->rgba_map[j] : j;
204 fprintf(s->stats_file, "psnr_%c:%0.2f ", s->comps[j],
205 get_psnr(comp_mse[c], 1, s->max[c]));
206 }
207 if (s->stats_version == 2 && s->stats_add_max) {
208 fprintf(s->stats_file, "max_avg:%d ", s->average_max);
209 for (j = 0; j < s->nb_components; j++) {
210 c = s->is_rgb ? s->rgba_map[j] : j;
211 fprintf(s->stats_file, "max_%c:%d ", s->comps[j], s->max[c]);
212 }
213 }
214 fprintf(s->stats_file, "\n");
215 }
216
217 return main;
218}
219
220static av_cold int init(AVFilterContext *ctx)
221{
222 PSNRContext *s = ctx->priv;
223
224 s->min_mse = +INFINITY;
225 s->max_mse = -INFINITY;
226
227 if (s->stats_file_str) {
228 if (s->stats_version < 2 && s->stats_add_max) {
229 av_log(ctx, AV_LOG_ERROR,
230 "stats_add_max was specified but stats_version < 2.\n" );
231 return AVERROR(EINVAL);
232 }
233 if (!strcmp(s->stats_file_str, "-")) {
234 s->stats_file = stdout;
235 } else {
236 s->stats_file = fopen(s->stats_file_str, "w");
237 if (!s->stats_file) {
238 int err = AVERROR(errno);
239 char buf[128];
240 av_strerror(err, buf, sizeof(buf));
241 av_log(ctx, AV_LOG_ERROR, "Could not open stats file %s: %s\n",
242 s->stats_file_str, buf);
243 return err;
244 }
245 }
246 }
247
248 s->dinput.process = do_psnr;
249 return 0;
250}
251
252static int query_formats(AVFilterContext *ctx)
253{
254 static const enum AVPixelFormat pix_fmts[] = {
255 AV_PIX_FMT_GRAY8, AV_PIX_FMT_GRAY10, AV_PIX_FMT_GRAY12, AV_PIX_FMT_GRAY16,
256#define PF_NOALPHA(suf) AV_PIX_FMT_YUV420##suf, AV_PIX_FMT_YUV422##suf, AV_PIX_FMT_YUV444##suf
257#define PF_ALPHA(suf) AV_PIX_FMT_YUVA420##suf, AV_PIX_FMT_YUVA422##suf, AV_PIX_FMT_YUVA444##suf
258#define PF(suf) PF_NOALPHA(suf), PF_ALPHA(suf)
259 PF(P), PF(P9), PF(P10), PF_NOALPHA(P12), PF_NOALPHA(P14), PF(P16),
260 AV_PIX_FMT_YUV440P, AV_PIX_FMT_YUV411P, AV_PIX_FMT_YUV410P,
261 AV_PIX_FMT_YUVJ411P, AV_PIX_FMT_YUVJ420P, AV_PIX_FMT_YUVJ422P,
262 AV_PIX_FMT_YUVJ440P, AV_PIX_FMT_YUVJ444P,
263 AV_PIX_FMT_GBRP, AV_PIX_FMT_GBRP9, AV_PIX_FMT_GBRP10,
264 AV_PIX_FMT_GBRP12, AV_PIX_FMT_GBRP14, AV_PIX_FMT_GBRP16,
265 AV_PIX_FMT_GBRAP, AV_PIX_FMT_GBRAP16,
266 AV_PIX_FMT_NONE
267 };
268
269 AVFilterFormats *fmts_list = ff_make_format_list(pix_fmts);
270 if (!fmts_list)
271 return AVERROR(ENOMEM);
272 return ff_set_common_formats(ctx, fmts_list);
273}
274
275static int config_input_ref(AVFilterLink *inlink)
276{
277 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format);
278 AVFilterContext *ctx = inlink->dst;
279 PSNRContext *s = ctx->priv;
280 double average_max;
281 unsigned sum;
282 int j;
283
284 s->nb_components = desc->nb_components;
285 if (ctx->inputs[0]->w != ctx->inputs[1]->w ||
286 ctx->inputs[0]->h != ctx->inputs[1]->h) {
287 av_log(ctx, AV_LOG_ERROR, "Width and height of input videos must be same.\n");
288 return AVERROR(EINVAL);
289 }
290 if (ctx->inputs[0]->format != ctx->inputs[1]->format) {
291 av_log(ctx, AV_LOG_ERROR, "Inputs must be of same pixel format.\n");
292 return AVERROR(EINVAL);
293 }
294
295 s->max[0] = (1 << desc->comp[0].depth) - 1;
296 s->max[1] = (1 << desc->comp[1].depth) - 1;
297 s->max[2] = (1 << desc->comp[2].depth) - 1;
298 s->max[3] = (1 << desc->comp[3].depth) - 1;
299
300 s->is_rgb = ff_fill_rgba_map(s->rgba_map, inlink->format) >= 0;
301 s->comps[0] = s->is_rgb ? 'r' : 'y' ;
302 s->comps[1] = s->is_rgb ? 'g' : 'u' ;
303 s->comps[2] = s->is_rgb ? 'b' : 'v' ;
304 s->comps[3] = 'a';
305
306 s->planeheight[1] = s->planeheight[2] = AV_CEIL_RSHIFT(inlink->h, desc->log2_chroma_h);
307 s->planeheight[0] = s->planeheight[3] = inlink->h;
308 s->planewidth[1] = s->planewidth[2] = AV_CEIL_RSHIFT(inlink->w, desc->log2_chroma_w);
309 s->planewidth[0] = s->planewidth[3] = inlink->w;
310 sum = 0;
311 for (j = 0; j < s->nb_components; j++)
312 sum += s->planeheight[j] * s->planewidth[j];
313 average_max = 0;
314 for (j = 0; j < s->nb_components; j++) {
315 s->planeweight[j] = (double) s->planeheight[j] * s->planewidth[j] / sum;
316 average_max += s->max[j] * s->planeweight[j];
317 }
318 s->average_max = lrint(average_max);
319
320 s->dsp.sse_line = desc->comp[0].depth > 8 ? sse_line_16bit : sse_line_8bit;
321 if (ARCH_X86)
322 ff_psnr_init_x86(&s->dsp, desc->comp[0].depth);
323
324 return 0;
325}
326
327static int config_output(AVFilterLink *outlink)
328{
329 AVFilterContext *ctx = outlink->src;
330 PSNRContext *s = ctx->priv;
331 AVFilterLink *mainlink = ctx->inputs[0];
332 int ret;
333
334 outlink->w = mainlink->w;
335 outlink->h = mainlink->h;
336 outlink->time_base = mainlink->time_base;
337 outlink->sample_aspect_ratio = mainlink->sample_aspect_ratio;
338 outlink->frame_rate = mainlink->frame_rate;
339 if ((ret = ff_dualinput_init(ctx, &s->dinput)) < 0)
340 return ret;
341
342 return 0;
343}
344
345static int filter_frame(AVFilterLink *inlink, AVFrame *inpicref)
346{
347 PSNRContext *s = inlink->dst->priv;
348 return ff_dualinput_filter_frame(&s->dinput, inlink, inpicref);
349}
350
351static int request_frame(AVFilterLink *outlink)
352{
353 PSNRContext *s = outlink->src->priv;
354 return ff_dualinput_request_frame(&s->dinput, outlink);
355}
356
357static av_cold void uninit(AVFilterContext *ctx)
358{
359 PSNRContext *s = ctx->priv;
360
361 if (s->nb_frames > 0) {
362 int j;
363 char buf[256];
364
365 buf[0] = 0;
366 for (j = 0; j < s->nb_components; j++) {
367 int c = s->is_rgb ? s->rgba_map[j] : j;
368 av_strlcatf(buf, sizeof(buf), " %c:%f", s->comps[j],
369 get_psnr(s->mse_comp[c], s->nb_frames, s->max[c]));
370 }
371 av_log(ctx, AV_LOG_INFO, "PSNR%s average:%f min:%f max:%f\n",
372 buf,
373 get_psnr(s->mse, s->nb_frames, s->average_max),
374 get_psnr(s->max_mse, 1, s->average_max),
375 get_psnr(s->min_mse, 1, s->average_max));
376 }
377
378 ff_dualinput_uninit(&s->dinput);
379
380 if (s->stats_file && s->stats_file != stdout)
381 fclose(s->stats_file);
382}
383
384static const AVFilterPad psnr_inputs[] = {
385 {
386 .name = "main",
387 .type = AVMEDIA_TYPE_VIDEO,
388 .filter_frame = filter_frame,
389 },{
390 .name = "reference",
391 .type = AVMEDIA_TYPE_VIDEO,
392 .filter_frame = filter_frame,
393 .config_props = config_input_ref,
394 },
395 { NULL }
396};
397
398static const AVFilterPad psnr_outputs[] = {
399 {
400 .name = "default",
401 .type = AVMEDIA_TYPE_VIDEO,
402 .config_props = config_output,
403 .request_frame = request_frame,
404 },
405 { NULL }
406};
407
408AVFilter ff_vf_psnr = {
409 .name = "psnr",
410 .description = NULL_IF_CONFIG_SMALL("Calculate the PSNR between two video streams."),
411 .init = init,
412 .uninit = uninit,
413 .query_formats = query_formats,
414 .priv_size = sizeof(PSNRContext),
415 .priv_class = &psnr_class,
416 .inputs = psnr_inputs,
417 .outputs = psnr_outputs,
418};
419
generated by cgit at 2024-05-17 03:42:03 (GMT)