FFmpeg: libavfilter/vf_psnr.c Source File

FFmpeg
vf_psnr.c
Go to the documentation of this file.
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 "filters.h"
36 #include "framesync.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 FRAMESYNC_DEFINE_CLASS(psnr, PSNRContext, fs);
74 
75  static inline unsigned pow_2(unsigned base)
76 {
77  return base*base;
78 }
79 
80  static inline double get_psnr(double mse, uint64_t nb_frames, int max)
81 {
82  return 10.0 * log10(pow_2(max) / (mse / nb_frames));
83 }
84 
85  static uint64_t sse_line_8bit(const uint8_t *main_line, const uint8_t *ref_line, int outw)
86 {
87  int j;
88  unsigned m2 = 0;
89 
90  for (j = 0; j < outw; j++)
91  m2 += pow_2(main_line[j] - ref_line[j]);
92 
93  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  int compute_images_mse(AVFilterContext *ctx, void *arg,
123  int jobnr, int nb_jobs)
124 {
125  ThreadData *td = arg;
126  uint64_t *score = td->score[jobnr];
127 
128  for (int c = 0; c < td->nb_components; c++) {
129  const int outw = td->planewidth[c];
130  const int outh = td->planeheight[c];
131  const int slice_start = (outh * jobnr) / nb_jobs;
132  const int slice_end = (outh * (jobnr+1)) / nb_jobs;
133  const int ref_linesize = td->ref_linesize[c];
134  const int main_linesize = td->main_linesize[c];
135  const uint8_t *main_line = td->main_data[c] + main_linesize * slice_start;
136  const uint8_t *ref_line = td->ref_data[c] + ref_linesize * slice_start;
137  uint64_t m = 0;
138  for (int i = slice_start; i < slice_end; i++) {
139  m += td->dsp->sse_line(main_line, ref_line, outw);
140  ref_line += ref_linesize;
141  main_line += main_linesize;
142  }
143  score[c] = m;
144  }
145 
146  return 0;
147 }
148 
149  static void set_meta(AVDictionary **metadata, const char *key, char comp, float d)
150 {
151  char value[128];
152  snprintf(value, sizeof(value), "%f", d);
153  if (comp) {
154  char key2[128];
155  snprintf(key2, sizeof(key2), "%s%c", key, comp);
156  av_dict_set(metadata, key2, value, 0);
157  } else {
158  av_dict_set(metadata, key, value, 0);
159  }
160 }
161 
162  static int do_psnr(FFFrameSync *fs)
163 {
164  AVFilterContext *ctx = fs->parent;
165  PSNRContext *s = ctx->priv;
166  AVFrame *master, *ref;
167  double comp_mse[4], mse = 0.;
168  uint64_t comp_sum[4] = { 0 };
169  AVDictionary **metadata;
170  ThreadData td;
171  int ret;
172 
173  ret = ff_framesync_dualinput_get(fs, &master, &ref);
174  if (ret < 0)
175  return ret;
176  if (ctx->is_disabled || !ref)
177  return ff_filter_frame(ctx->outputs[0], master);
178  metadata = &master->metadata;
179 
180  td.nb_components = s->nb_components;
181  td.dsp = &s->dsp;
182  td.score = s->score;
183  for (int c = 0; c < s->nb_components; c++) {
184  td.main_data[c] = master->data[c];
185  td.ref_data[c] = ref->data[c];
186  td.main_linesize[c] = master->linesize[c];
187  td.ref_linesize[c] = ref->linesize[c];
188  td.planewidth[c] = s->planewidth[c];
189  td.planeheight[c] = s->planeheight[c];
190  }
191 
192  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  ff_filter_execute(ctx, compute_images_mse, &td, NULL,
200  FFMIN(s->planeheight[1], s->nb_threads));
201 
202  for (int j = 0; j < s->nb_threads; j++) {
203  for (int c = 0; c < s->nb_components; c++)
204  comp_sum[c] += s->score[j][c];
205  }
206 
207  for (int c = 0; c < s->nb_components; c++)
208  comp_mse[c] = comp_sum[c] / ((double)s->planewidth[c] * s->planeheight[c]);
209 
210  for (int c = 0; c < s->nb_components; c++)
211  mse += comp_mse[c] * s->planeweight[c];
212 
213  s->min_mse = FFMIN(s->min_mse, mse);
214  s->max_mse = FFMAX(s->max_mse, mse);
215 
216  s->mse += mse;
217 
218  for (int j = 0; j < s->nb_components; j++)
219  s->mse_comp[j] += comp_mse[j];
220  s->nb_frames++;
221 
222  for (int j = 0; j < s->nb_components; j++) {
223  int c = s->is_rgb ? s->rgba_map[j] : j;
224  set_meta(metadata, "lavfi.psnr.mse.", s->comps[j], comp_mse[c]);
225  set_meta(metadata, "lavfi.psnr.psnr.", s->comps[j], get_psnr(comp_mse[c], 1, s->max[c]));
226  }
227  set_meta(metadata, "lavfi.psnr.mse_avg", 0, mse);
228  set_meta(metadata, "lavfi.psnr.psnr_avg", 0, get_psnr(mse, 1, s->average_max));
229 
230  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  return ff_filter_frame(ctx->outputs[0], master);
272 }
273 
274  static av_cold int init(AVFilterContext *ctx)
275 {
276  PSNRContext *s = ctx->priv;
277 
278  s->min_mse = +INFINITY;
279  s->max_mse = -INFINITY;
280 
281  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  av_log(ctx, AV_LOG_ERROR, "Could not open stats file %s: %s\n",
294  s->stats_file_str, av_err2str(err));
295  return err;
296  }
297  }
298  }
299 
300  s->fs.on_event = do_psnr;
301  return 0;
302 }
303 
304  static const enum AVPixelFormat pix_fmts[] = {
305  AV_PIX_FMT_GRAY8, AV_PIX_FMT_GRAY9, AV_PIX_FMT_GRAY10, AV_PIX_FMT_GRAY12, AV_PIX_FMT_GRAY14, AV_PIX_FMT_GRAY16,
306 #define PF_NOALPHA(suf) AV_PIX_FMT_YUV420##suf, AV_PIX_FMT_YUV422##suf, AV_PIX_FMT_YUV444##suf
307 #define PF_ALPHA(suf) AV_PIX_FMT_YUVA420##suf, AV_PIX_FMT_YUVA422##suf, AV_PIX_FMT_YUVA444##suf
308 #define PF(suf) PF_NOALPHA(suf), PF_ALPHA(suf)
309  PF(P), PF(P9), PF(P10), PF_NOALPHA(P12), PF_NOALPHA(P14), PF(P16),
310  AV_PIX_FMT_YUV440P, AV_PIX_FMT_YUV411P, AV_PIX_FMT_YUV410P,
311  AV_PIX_FMT_YUVJ411P, AV_PIX_FMT_YUVJ420P, AV_PIX_FMT_YUVJ422P,
312  AV_PIX_FMT_YUVJ440P, AV_PIX_FMT_YUVJ444P,
313  AV_PIX_FMT_GBRP, AV_PIX_FMT_GBRP9, AV_PIX_FMT_GBRP10,
314  AV_PIX_FMT_GBRP12, AV_PIX_FMT_GBRP14, AV_PIX_FMT_GBRP16,
315  AV_PIX_FMT_GBRAP, AV_PIX_FMT_GBRAP10, AV_PIX_FMT_GBRAP12, AV_PIX_FMT_GBRAP16,
316  AV_PIX_FMT_NONE
317 };
318 
319  static int config_input_ref(AVFilterLink *inlink)
320 {
321  const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format);
322  AVFilterContext *ctx = inlink->dst;
323  PSNRContext *s = ctx->priv;
324  double average_max;
325  unsigned sum;
326  int j;
327 
328  s->nb_threads = ff_filter_get_nb_threads(ctx);
329  s->nb_components = desc->nb_components;
330  if (ctx->inputs[0]->w != ctx->inputs[1]->w ||
331  ctx->inputs[0]->h != ctx->inputs[1]->h) {
332  av_log(ctx, AV_LOG_ERROR, "Width and height of input videos must be same.\n");
333  return AVERROR(EINVAL);
334  }
335 
336  s->max[0] = (1 << desc->comp[0].depth) - 1;
337  s->max[1] = (1 << desc->comp[1].depth) - 1;
338  s->max[2] = (1 << desc->comp[2].depth) - 1;
339  s->max[3] = (1 << desc->comp[3].depth) - 1;
340 
341  s->is_rgb = ff_fill_rgba_map(s->rgba_map, inlink->format) >= 0;
342  s->comps[0] = s->is_rgb ? 'r' : 'y' ;
343  s->comps[1] = s->is_rgb ? 'g' : 'u' ;
344  s->comps[2] = s->is_rgb ? 'b' : 'v' ;
345  s->comps[3] = 'a';
346 
347  s->planeheight[1] = s->planeheight[2] = AV_CEIL_RSHIFT(inlink->h, desc->log2_chroma_h);
348  s->planeheight[0] = s->planeheight[3] = inlink->h;
349  s->planewidth[1] = s->planewidth[2] = AV_CEIL_RSHIFT(inlink->w, desc->log2_chroma_w);
350  s->planewidth[0] = s->planewidth[3] = inlink->w;
351  sum = 0;
352  for (j = 0; j < s->nb_components; j++)
353  sum += s->planeheight[j] * s->planewidth[j];
354  average_max = 0;
355  for (j = 0; j < s->nb_components; j++) {
356  s->planeweight[j] = (double) s->planeheight[j] * s->planewidth[j] / sum;
357  average_max += s->max[j] * s->planeweight[j];
358  }
359  s->average_max = lrint(average_max);
360 
361  s->dsp.sse_line = desc->comp[0].depth > 8 ? sse_line_16bit : sse_line_8bit;
362 #if ARCH_X86
363  ff_psnr_init_x86(&s->dsp, desc->comp[0].depth);
364 #endif
365 
366  s->score = av_calloc(s->nb_threads, sizeof(*s->score));
367  if (!s->score)
368  return AVERROR(ENOMEM);
369 
370  for (int t = 0; t < s->nb_threads; t++) {
371  s->score[t] = av_calloc(s->nb_components, sizeof(*s->score[0]));
372  if (!s->score[t])
373  return AVERROR(ENOMEM);
374  }
375 
376  return 0;
377 }
378 
379  static int config_output(AVFilterLink *outlink)
380 {
381  AVFilterContext *ctx = outlink->src;
382  PSNRContext *s = ctx->priv;
383  AVFilterLink *mainlink = ctx->inputs[0];
384  FilterLink *il = ff_filter_link(mainlink);
385  FilterLink *ol = ff_filter_link(outlink);
386  int ret;
387 
388  ret = ff_framesync_init_dualinput(&s->fs, ctx);
389  if (ret < 0)
390  return ret;
391  outlink->w = mainlink->w;
392  outlink->h = mainlink->h;
393  outlink->time_base = mainlink->time_base;
394  outlink->sample_aspect_ratio = mainlink->sample_aspect_ratio;
395  ol->frame_rate = il->frame_rate;
396  if ((ret = ff_framesync_configure(&s->fs)) < 0)
397  return ret;
398 
399  outlink->time_base = s->fs.time_base;
400 
401  if (av_cmp_q(mainlink->time_base, outlink->time_base) ||
402  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  return 0;
408 }
409 
410  static int activate(AVFilterContext *ctx)
411 {
412  PSNRContext *s = ctx->priv;
413  return ff_framesync_activate(&s->fs);
414 }
415 
416  static av_cold void uninit(AVFilterContext *ctx)
417 {
418  PSNRContext *s = ctx->priv;
419 
420  if (s->nb_frames > 0) {
421  int j;
422  char buf[256];
423 
424  buf[0] = 0;
425  for (j = 0; j < s->nb_components; j++) {
426  int c = s->is_rgb ? s->rgba_map[j] : j;
427  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  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  ff_framesync_uninit(&s->fs);
438  for (int t = 0; t < s->nb_threads && s->score; t++)
439  av_freep(&s->score[t]);
440  av_freep(&s->score);
441 
442  if (s->stats_file && s->stats_file != stdout)
443  fclose(s->stats_file);
444 }
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 };
AV_PIX_FMT_GBRAP16
#define AV_PIX_FMT_GBRAP16
Definition: pixfmt.h:501
ff_framesync_configure
int ff_framesync_configure(FFFrameSync *fs)
Configure a frame sync structure.
Definition: framesync.c:137
AV_LOG_WARNING
#define AV_LOG_WARNING
Something somehow does not look correct.
Definition: log.h:186
PSNRContext::stats_version
int stats_version
Definition: vf_psnr.c:46
config_input_ref
static int config_input_ref(AVFilterLink *inlink)
Definition: vf_psnr.c:319
AVPixelFormat
AVPixelFormat
Pixel format.
Definition: pixfmt.h:71
PSNRContext::max_mse
double max_mse
Definition: vf_psnr.c:42
do_psnr
static int do_psnr(FFFrameSync *fs)
Definition: vf_psnr.c:162
INFINITY
#define INFINITY
Definition: mathematics.h:118
AVERROR
Filter the word "frame" indicates either a video frame or a group of audio as stored in an AVFrame structure Format for each input and each output the list of supported formats For video that means pixel format For audio that means channel sample they are references to shared objects When the negotiation mechanism computes the intersection of the formats supported at each end of a all references to both lists are replaced with a reference to the intersection And when a single format is eventually chosen for a link amongst the remaining all references to the list are updated That means that if a filter requires that its input and output have the same format amongst a supported all it has to do is use a reference to the same list of formats query_formats can leave some formats unset and return AVERROR(EAGAIN) to cause the negotiation mechanism toagain later. That can be used by filters with complex requirements to use the format negotiated on one link to set the formats supported on another. Frame references ownership and permissions
opt.h
set_meta
static void set_meta(AVDictionary **metadata, const char *key, char comp, float d)
Definition: vf_psnr.c:149
PSNRContext::max
int max[4]
Definition: vf_psnr.c:49
FILTER_PIXFMTS_ARRAY
#define FILTER_PIXFMTS_ARRAY(array)
Definition: filters.h:242
ff_framesync_uninit
void ff_framesync_uninit(FFFrameSync *fs)
Free all memory currently allocated.
Definition: framesync.c:301
PSNRContext
Definition: vf_psnr.c:39
PSNRContext::planewidth
int planewidth[4]
Definition: vf_psnr.c:55
comp
static void comp(unsigned char *dst, ptrdiff_t dst_stride, unsigned char *src, ptrdiff_t src_stride, int add)
Definition: eamad.c:81
ff_filter_frame
int ff_filter_frame(AVFilterLink *link, AVFrame *frame)
Send a frame of data to the next filter.
Definition: avfilter.c:1023
av_pix_fmt_desc_get
const AVPixFmtDescriptor * av_pix_fmt_desc_get(enum AVPixelFormat pix_fmt)
Definition: pixdesc.c:2965
inlink
The exact code depends on how similar the blocks are and how related they are to the and needs to apply these operations to the correct inlink or outlink if there are several Macros are available to factor that when no extra processing is inlink
Definition: filter_design.txt:212
PSNRContext::is_rgb
int is_rgb
Definition: vf_psnr.c:50
FILTER_INPUTS
#define FILTER_INPUTS(array)
Definition: filters.h:262
PSNRContext::stats_file_str
char * stats_file_str
Definition: vf_psnr.c:45
AVFrame
This structure describes decoded (raw) audio or video data.
Definition: frame.h:389
pixdesc.h
ThreadData::ref_linesize
int ref_linesize
Definition: vf_bm3d.c:57
AVOption
AVOption.
Definition: opt.h:429
base
uint8_t base
Definition: vp3data.h:128
AV_PIX_FMT_YUV440P
@ AV_PIX_FMT_YUV440P
planar YUV 4:4:0 (1 Cr & Cb sample per 1x2 Y samples)
Definition: pixfmt.h:106
max
#define max(a, b)
Definition: cuda_runtime.h:33
AVDictionary
Definition: dict.c:34
FFMAX
#define FFMAX(a, b)
Definition: macros.h:47
AVFilter::name
const char * name
Filter name.
Definition: avfilter.h:205
FFFrameSync
Frame sync structure.
Definition: framesync.h:168
init
static av_cold int init(AVFilterContext *ctx)
Definition: vf_psnr.c:274
psnr
static double psnr(double d)
Definition: ffmpeg_enc.c:528
av_strlcatf
size_t av_strlcatf(char *dst, size_t size, const char *fmt,...)
Definition: avstring.c:103
ff_psnr_init_x86
void ff_psnr_init_x86(PSNRDSPContext *dsp, int bpp)
Definition: vf_psnr_init.c:28
AV_PIX_FMT_GRAY9
#define AV_PIX_FMT_GRAY9
Definition: pixfmt.h:458
psnr_inputs
static const AVFilterPad psnr_inputs[]
Definition: vf_psnr.c:446
AV_PIX_FMT_GBRP14
#define AV_PIX_FMT_GBRP14
Definition: pixfmt.h:496
slice_end
static int slice_end(AVCodecContext *avctx, AVFrame *pict, int *got_output)
Handle slice ends.
Definition: mpeg12dec.c:1719
AV_PIX_FMT_GBRAP
@ AV_PIX_FMT_GBRAP
planar GBRA 4:4:4:4 32bpp
Definition: pixfmt.h:212
AV_PIX_FMT_GBRP10
#define AV_PIX_FMT_GBRP10
Definition: pixfmt.h:494
AV_PIX_FMT_GRAY16
#define AV_PIX_FMT_GRAY16
Definition: pixfmt.h:462
AVRational::num
int num
Numerator.
Definition: rational.h:59
AVFilterPad
A filter pad used for either input or output.
Definition: filters.h:38
AV_PIX_FMT_YUVJ411P
@ AV_PIX_FMT_YUVJ411P
planar YUV 4:1:1, 12bpp, (1 Cr & Cb sample per 4x1 Y samples) full scale (JPEG), deprecated in favor ...
Definition: pixfmt.h:283
lrint
#define lrint
Definition: tablegen.h:53
AV_LOG_ERROR
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:180
av_cold
#define av_cold
Definition: attributes.h:90
psnr.h
AV_PIX_FMT_YUVJ422P
@ AV_PIX_FMT_YUVJ422P
planar YUV 4:2:2, 16bpp, full scale (JPEG), deprecated in favor of AV_PIX_FMT_YUV422P and setting col...
Definition: pixfmt.h:86
AV_PIX_FMT_GBRAP10
#define AV_PIX_FMT_GBRAP10
Definition: pixfmt.h:498
s
#define s(width, name)
Definition: cbs_vp9.c:198
AV_PIX_FMT_GBRAP12
#define AV_PIX_FMT_GBRAP12
Definition: pixfmt.h:499
AV_CEIL_RSHIFT
#define AV_CEIL_RSHIFT(a, b)
Definition: common.h:60
FRAMESYNC_DEFINE_CLASS
FRAMESYNC_DEFINE_CLASS(psnr, PSNRContext, fs)
filters.h
PSNRContext::mse
double mse
Definition: vf_psnr.c:42
ctx
AVFormatContext * ctx
Definition: movenc.c:49
AV_PIX_FMT_GRAY14
#define AV_PIX_FMT_GRAY14
Definition: pixfmt.h:461
key
const char * key
Definition: hwcontext_opencl.c:189
FILTER_OUTPUTS
#define FILTER_OUTPUTS(array)
Definition: filters.h:263
file_open.h
AV_PIX_FMT_YUVJ444P
@ AV_PIX_FMT_YUVJ444P
planar YUV 4:4:4, 24bpp, full scale (JPEG), deprecated in favor of AV_PIX_FMT_YUV444P and setting col...
Definition: pixfmt.h:87
arg
const char * arg
Definition: jacosubdec.c:67
AV_PIX_FMT_GRAY10
#define AV_PIX_FMT_GRAY10
Definition: pixfmt.h:459
av_color_range_name
const char * av_color_range_name(enum AVColorRange range)
Definition: pixdesc.c:3281
AV_PIX_FMT_GBRP16
#define AV_PIX_FMT_GBRP16
Definition: pixfmt.h:497
AVClass
Describe the class of an AVClass context structure.
Definition: log.h:66
NULL
#define NULL
Definition: coverity.c:32
fs
#define fs(width, name, subs,...)
Definition: cbs_vp9.c:200
AV_PIX_FMT_YUVJ420P
@ AV_PIX_FMT_YUVJ420P
planar YUV 4:2:0, 12bpp, full scale (JPEG), deprecated in favor of AV_PIX_FMT_YUV420P and setting col...
Definition: pixfmt.h:85
PSNRContext::comps
char comps[4]
Definition: vf_psnr.c:52
double
double
Definition: af_crystalizer.c:132
ThreadData::planewidth
int planewidth[4]
Definition: vf_identity.c:89
psnr_options
static const AVOption psnr_options[]
Definition: vf_psnr.c:65
AV_PIX_FMT_GRAY8
@ AV_PIX_FMT_GRAY8
Y , 8bpp.
Definition: pixfmt.h:81
AV_PIX_FMT_GBRP9
#define AV_PIX_FMT_GBRP9
Definition: pixfmt.h:493
PSNRDSPContext
Definition: psnr.h:27
c
Undefined Behavior In the C some operations are like signed integer dereferencing freed accessing outside allocated Undefined Behavior must not occur in a C it is not safe even if the output of undefined operations is unused The unsafety may seem nit picking but Optimizing compilers have in fact optimized code on the assumption that no undefined Behavior occurs Optimizing code based on wrong assumptions can and has in some cases lead to effects beyond the output of computations The signed integer overflow problem in speed critical code Code which is highly optimized and works with signed integers sometimes has the problem that often the output of the computation does not c
Definition: undefined.txt:32
sse_line_8bit
static uint64_t sse_line_8bit(const uint8_t *main_line, const uint8_t *ref_line, int outw)
Definition: vf_psnr.c:85
ff_filter_link
static FilterLink * ff_filter_link(AVFilterLink *link)
Definition: filters.h:197
PSNRContext::stats_header_written
int stats_header_written
Definition: vf_psnr.c:47
ThreadData::dsp
PSNRDSPContext * dsp
Definition: vf_psnr.c:118
PSNRContext::rgba_map
uint8_t rgba_map[4]
Definition: vf_psnr.c:51
PF_NOALPHA
#define PF_NOALPHA(suf)
sse_line_16bit
static uint64_t sse_line_16bit(const uint8_t *_main_line, const uint8_t *_ref_line, int outw)
Definition: vf_psnr.c:96
psnr_outputs
static const AVFilterPad psnr_outputs[]
Definition: vf_psnr.c:457
NULL_IF_CONFIG_SMALL
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification.
Definition: internal.h:94
ff_framesync_init_dualinput
int ff_framesync_init_dualinput(FFFrameSync *fs, AVFilterContext *parent)
Initialize a frame sync structure for dualinput.
Definition: framesync.c:372
master
const char * master
Definition: vf_curves.c:130
P
#define P
PSNRContext::nb_components
int nb_components
Definition: vf_psnr.c:53
PSNRContext::fs
FFFrameSync fs
Definition: vf_psnr.c:41
pow_2
static unsigned pow_2(unsigned base)
Definition: vf_psnr.c:75
av_err2str
#define av_err2str(errnum)
Convenience macro, the return value should be used only directly in function arguments but never stan...
Definition: error.h:122
PSNRContext::planeheight
int planeheight[4]
Definition: vf_psnr.c:56
for
for(k=2;k<=8;++k)
Definition: h264pred_template.c:425
uninit
static av_cold void uninit(AVFilterContext *ctx)
Definition: vf_psnr.c:416
PSNRContext::min_mse
double min_mse
Definition: vf_psnr.c:42
pix_fmts
static enum AVPixelFormat pix_fmts[]
Definition: vf_psnr.c:304
PF
#define PF(suf)
AV_LOG_INFO
#define AV_LOG_INFO
Standard information.
Definition: log.h:191
ThreadData::score
uint64_t ** score
Definition: vf_identity.c:91
i
#define i(width, name, range_min, range_max)
Definition: cbs_h2645.c:256
AV_PIX_FMT_GBRP12
#define AV_PIX_FMT_GBRP12
Definition: pixfmt.h:495
ff_filter_get_nb_threads
int ff_filter_get_nb_threads(AVFilterContext *ctx)
Get number of threads for current filter instance.
Definition: avfilter.c:834
ThreadData
Used for passing data between threads.
Definition: dsddec.c:71
config_output
static int config_output(AVFilterLink *outlink)
Definition: vf_psnr.c:379
PSNRContext::mse_comp
double mse_comp[4]
Definition: vf_psnr.c:42
value
it s the only field you need to keep assuming you have a context There is some magic you don t need to care about around this just let it vf default value
Definition: writing_filters.txt:86
FFMIN
#define FFMIN(a, b)
Definition: macros.h:49
AV_PIX_FMT_YUVJ440P
@ AV_PIX_FMT_YUVJ440P
planar YUV 4:4:0 full scale (JPEG), deprecated in favor of AV_PIX_FMT_YUV440P and setting color_range
Definition: pixfmt.h:107
AVFilterPad::name
const char * name
Pad name.
Definition: filters.h:44
avpriv_fopen_utf8
FILE * avpriv_fopen_utf8(const char *path, const char *mode)
Open a file using a UTF-8 filename.
Definition: file_open.c:161
av_calloc
void * av_calloc(size_t nmemb, size_t size)
Definition: mem.c:264
PSNRContext::planeweight
double planeweight[4]
Definition: vf_psnr.c:57
PSNRContext::average_max
int average_max
Definition: vf_psnr.c:49
slice_start
static int slice_start(SliceContext *sc, VVCContext *s, VVCFrameContext *fc, const CodedBitstreamUnit *unit, const int is_first_slice)
Definition: dec.c:737
PSNRContext::dsp
PSNRDSPContext dsp
Definition: vf_psnr.c:59
PSNRContext::stats_add_max
int stats_add_max
Definition: vf_psnr.c:48
av_cmp_q
static int av_cmp_q(AVRational a, AVRational b)
Compare two rationals.
Definition: rational.h:89
AVFilter
Filter definition.
Definition: avfilter.h:201
ret
ret
Definition: filter_design.txt:187
PSNRContext::nb_threads
int nb_threads
Definition: vf_psnr.c:54
framesync.h
get_psnr
static double get_psnr(double mse, uint64_t nb_frames, int max)
Definition: vf_psnr.c:80
PSNRDSPContext::sse_line
uint64_t(* sse_line)(const uint8_t *buf, const uint8_t *ref, int w)
Definition: psnr.h:28
ff_filter_execute
int ff_filter_execute(AVFilterContext *ctx, avfilter_action_func *func, void *arg, int *ret, int nb_jobs)
Definition: avfilter.c:1651
AVRational::den
int den
Denominator.
Definition: rational.h:60
AV_PIX_FMT_NONE
@ AV_PIX_FMT_NONE
Definition: pixfmt.h:72
AV_OPT_TYPE_INT
@ AV_OPT_TYPE_INT
Underlying C type is int.
Definition: opt.h:259
avfilter.h
AVFILTER_FLAG_METADATA_ONLY
#define AVFILTER_FLAG_METADATA_ONLY
The filter is a "metadata" filter - it does not modify the frame data in any way.
Definition: avfilter.h:168
ref
static int ref[MAX_W *MAX_W]
Definition: jpeg2000dwt.c:112
ThreadData::main_linesize
int main_linesize[4]
Definition: vf_identity.c:87
activate
static int activate(AVFilterContext *ctx)
Definition: vf_psnr.c:410
AVFilterContext
An instance of a filter.
Definition: avfilter.h:457
AV_PIX_FMT_GBRP
@ AV_PIX_FMT_GBRP
planar GBR 4:4:4 24bpp
Definition: pixfmt.h:165
AVFILTER_FLAG_SLICE_THREADS
#define AVFILTER_FLAG_SLICE_THREADS
The filter supports multithreading by splitting frames into multiple parts and processing them concur...
Definition: avfilter.h:152
desc
const char * desc
Definition: libsvtav1.c:79
AVMEDIA_TYPE_VIDEO
@ AVMEDIA_TYPE_VIDEO
Definition: avutil.h:201
mem.h
AVPixFmtDescriptor
Descriptor that unambiguously describes how the bits of a pixel are stored in the up to 4 data planes...
Definition: pixdesc.h:69
ThreadData::nb_components
int nb_components
Definition: vf_identity.c:92
AV_OPT_TYPE_BOOL
@ AV_OPT_TYPE_BOOL
Underlying C type is int.
Definition: opt.h:327
av_freep
#define av_freep(p)
Definition: tableprint_vlc.h:34
av_dict_set
int av_dict_set(AVDictionary **pm, const char *key, const char *value, int flags)
Set the given entry in *pm, overwriting an existing entry.
Definition: dict.c:88
FLAGS
#define FLAGS
Definition: vf_psnr.c:63
compute_images_mse
static int compute_images_mse(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
Definition: vf_psnr.c:122
AV_PIX_FMT_YUV411P
@ AV_PIX_FMT_YUV411P
planar YUV 4:1:1, 12bpp, (1 Cr & Cb sample per 4x1 Y samples)
Definition: pixfmt.h:80
ff_fill_rgba_map
int ff_fill_rgba_map(uint8_t *rgba_map, enum AVPixelFormat pix_fmt)
Definition: drawutils.c:35
ThreadData::planeheight
int planeheight[4]
Definition: vf_identity.c:90
AVFILTER_FLAG_SUPPORT_TIMELINE_INTERNAL
#define AVFILTER_FLAG_SUPPORT_TIMELINE_INTERNAL
Same as AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC, except that the filter will have its filter_frame() c...
Definition: avfilter.h:190
AV_PIX_FMT_YUV410P
@ AV_PIX_FMT_YUV410P
planar YUV 4:1:0, 9bpp, (1 Cr & Cb sample per 4x4 Y samples)
Definition: pixfmt.h:79
av_log
#define av_log(a,...)
Definition: tableprint_vlc.h:27
PSNRContext::nb_frames
uint64_t nb_frames
Definition: vf_psnr.c:43
ff_framesync_activate
int ff_framesync_activate(FFFrameSync *fs)
Examine the frames in the filter's input and try to produce output.
Definition: framesync.c:352
avstring.h
ff_framesync_dualinput_get
int ff_framesync_dualinput_get(FFFrameSync *fs, AVFrame **f0, AVFrame **f1)
Definition: framesync.c:390
AV_OPT_TYPE_STRING
@ AV_OPT_TYPE_STRING
Underlying C type is a uint8_t* that is either NULL or points to a C string allocated with the av_mal...
Definition: opt.h:276
AV_PIX_FMT_GRAY12
#define AV_PIX_FMT_GRAY12
Definition: pixfmt.h:460
drawutils.h
PSNRContext::stats_file
FILE * stats_file
Definition: vf_psnr.c:44
ThreadData::ref_data
const uint8_t * ref_data[4]
Definition: vf_identity.c:86
snprintf
#define snprintf
Definition: snprintf.h:34
OFFSET
#define OFFSET(x)
Definition: vf_psnr.c:62
PSNRContext::score
uint64_t ** score
Definition: vf_psnr.c:58
ff_vf_psnr
const AVFilter ff_vf_psnr
Definition: vf_psnr.c:465
ThreadData::main_data
const uint8_t * main_data[4]
Definition: vf_identity.c:85
Generated on Fri Aug 22 2025 13:59:19 for FFmpeg by   doxygen 1.8.17

AltStyle によって変換されたページ (->オリジナル) /