FFmpeg
avf_ahistogram.c
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1 /*
2  * Copyright (c) 2015 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 #include "libavutil/avassert.h"
22 #include "libavutil/mem.h"
23 #include "libavutil/opt.h"
24 #include "avfilter.h"
25 #include "filters.h"
26 #include "formats.h"
27 #include "video.h"
28 #include "internal.h"
29 
30 enum DisplayScale { LINEAR, SQRT, CBRT, LOG, RLOG, NB_SCALES };
31 enum AmplitudeScale { ALINEAR, ALOG, NB_ASCALES };
32 enum SlideMode { REPLACE, SCROLL, NB_SLIDES };
33 enum DisplayMode { SINGLE, SEPARATE, NB_DMODES };
34 enum HistogramMode { ABS, SIGN, NB_HMODES };
35 
36 typedef struct AudioHistogramContext {
37  const AVClass *class;
38  AVFrame *out;
39  int w, h;
40  AVRational frame_rate;
41  uint64_t *achistogram;
42  uint64_t *shistogram;
43  int ascale;
44  int scale;
45  float phisto;
46  int histogram_h;
47  int apos;
48  int ypos;
49  int slide;
50  int dmode;
51  int hmode;
52  int dchannels;
53  int count;
54  int frame_count;
55  float *combine_buffer;
56  AVFrame *in[101];
57  int first;
58  int nb_samples;
59 
60  int (*get_bin)(float in, int w);
61 } AudioHistogramContext;
62 
63 #define OFFSET(x) offsetof(AudioHistogramContext, x)
64 #define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM
65 
66 static const AVOption ahistogram_options[] = {
67  { "dmode", "set method to display channels", OFFSET(dmode), AV_OPT_TYPE_INT, {.i64=SINGLE}, 0, NB_DMODES-1, FLAGS, .unit = "dmode" },
68  { "single", "all channels use single histogram", 0, AV_OPT_TYPE_CONST, {.i64=SINGLE}, 0, 0, FLAGS, .unit = "dmode" },
69  { "separate", "each channel have own histogram", 0, AV_OPT_TYPE_CONST, {.i64=SEPARATE}, 0, 0, FLAGS, .unit = "dmode" },
70  { "rate", "set video rate", OFFSET(frame_rate), AV_OPT_TYPE_VIDEO_RATE, {.str="25"}, 0, INT_MAX, FLAGS },
71  { "r", "set video rate", OFFSET(frame_rate), AV_OPT_TYPE_VIDEO_RATE, {.str="25"}, 0, INT_MAX, FLAGS },
72  { "size", "set video size", OFFSET(w), AV_OPT_TYPE_IMAGE_SIZE, {.str="hd720"}, 0, 0, FLAGS },
73  { "s", "set video size", OFFSET(w), AV_OPT_TYPE_IMAGE_SIZE, {.str="hd720"}, 0, 0, FLAGS },
74  { "scale", "set display scale", OFFSET(scale), AV_OPT_TYPE_INT, {.i64=LOG}, LINEAR, NB_SCALES-1, FLAGS, .unit = "scale" },
75  { "log", "logarithmic", 0, AV_OPT_TYPE_CONST, {.i64=LOG}, 0, 0, FLAGS, .unit = "scale" },
76  { "sqrt", "square root", 0, AV_OPT_TYPE_CONST, {.i64=SQRT}, 0, 0, FLAGS, .unit = "scale" },
77  { "cbrt", "cubic root", 0, AV_OPT_TYPE_CONST, {.i64=CBRT}, 0, 0, FLAGS, .unit = "scale" },
78  { "lin", "linear", 0, AV_OPT_TYPE_CONST, {.i64=LINEAR}, 0, 0, FLAGS, .unit = "scale" },
79  { "rlog", "reverse logarithmic", 0, AV_OPT_TYPE_CONST, {.i64=RLOG}, 0, 0, FLAGS, .unit = "scale" },
80  { "ascale", "set amplitude scale", OFFSET(ascale), AV_OPT_TYPE_INT, {.i64=ALOG}, LINEAR, NB_ASCALES-1, FLAGS, .unit = "ascale" },
81  { "log", "logarithmic", 0, AV_OPT_TYPE_CONST, {.i64=ALOG}, 0, 0, FLAGS, .unit = "ascale" },
82  { "lin", "linear", 0, AV_OPT_TYPE_CONST, {.i64=ALINEAR}, 0, 0, FLAGS, .unit = "ascale" },
83  { "acount", "how much frames to accumulate", OFFSET(count), AV_OPT_TYPE_INT, {.i64=1}, -1, 100, FLAGS },
84  { "rheight", "set histogram ratio of window height", OFFSET(phisto), AV_OPT_TYPE_FLOAT, {.dbl=0.10}, 0, 1, FLAGS },
85  { "slide", "set sonogram sliding", OFFSET(slide), AV_OPT_TYPE_INT, {.i64=REPLACE}, 0, NB_SLIDES-1, FLAGS, .unit = "slide" },
86  { "replace", "replace old rows with new", 0, AV_OPT_TYPE_CONST, {.i64=REPLACE}, 0, 0, FLAGS, .unit = "slide" },
87  { "scroll", "scroll from top to bottom", 0, AV_OPT_TYPE_CONST, {.i64=SCROLL}, 0, 0, FLAGS, .unit = "slide" },
88  { "hmode", "set histograms mode", OFFSET(hmode), AV_OPT_TYPE_INT, {.i64=ABS}, 0, NB_HMODES-1, FLAGS, .unit = "hmode" },
89  { "abs", "use absolute samples", 0, AV_OPT_TYPE_CONST, {.i64=ABS}, 0, 0, FLAGS, .unit = "hmode" },
90  { "sign", "use unchanged samples", 0, AV_OPT_TYPE_CONST, {.i64=SIGN},0, 0, FLAGS, .unit = "hmode" },
91  { NULL }
92 };
93 
94 AVFILTER_DEFINE_CLASS(ahistogram);
95 
96 static int query_formats(AVFilterContext *ctx)
97 {
98  AVFilterFormats *formats = NULL;
99  AVFilterChannelLayouts *layouts = NULL;
100  AVFilterLink *inlink = ctx->inputs[0];
101  AVFilterLink *outlink = ctx->outputs[0];
102  static const enum AVSampleFormat sample_fmts[] = { AV_SAMPLE_FMT_FLTP, AV_SAMPLE_FMT_NONE };
103  static const enum AVPixelFormat pix_fmts[] = { AV_PIX_FMT_YUVA444P, AV_PIX_FMT_NONE };
104  int ret = AVERROR(EINVAL);
105 
106  formats = ff_make_format_list(sample_fmts);
107  if ((ret = ff_formats_ref (formats, &inlink->outcfg.formats )) < 0 ||
108  (layouts = ff_all_channel_counts()) == NULL ||
109  (ret = ff_channel_layouts_ref (layouts, &inlink->outcfg.channel_layouts)) < 0)
110  return ret;
111 
112  formats = ff_all_samplerates();
113  if ((ret = ff_formats_ref(formats, &inlink->outcfg.samplerates)) < 0)
114  return ret;
115 
116  formats = ff_make_format_list(pix_fmts);
117  if ((ret = ff_formats_ref(formats, &outlink->incfg.formats)) < 0)
118  return ret;
119 
120  return 0;
121 }
122 
123 static int config_input(AVFilterLink *inlink)
124 {
125  AVFilterContext *ctx = inlink->dst;
126  AudioHistogramContext *s = ctx->priv;
127 
128  s->nb_samples = FFMAX(1, av_rescale(inlink->sample_rate, s->frame_rate.den, s->frame_rate.num));
129  s->dchannels = s->dmode == SINGLE ? 1 : inlink->ch_layout.nb_channels;
130  s->shistogram = av_calloc(s->w, s->dchannels * sizeof(*s->shistogram));
131  if (!s->shistogram)
132  return AVERROR(ENOMEM);
133 
134  s->achistogram = av_calloc(s->w, s->dchannels * sizeof(*s->achistogram));
135  if (!s->achistogram)
136  return AVERROR(ENOMEM);
137 
138  return 0;
139 }
140 
141 static int get_lin_bin_abs(float in, int w)
142 {
143  return lrintf(av_clipf(fabsf(in), 0.f, 1.f) * (w - 1));
144 }
145 
146 static int get_lin_bin_sign(float in, int w)
147 {
148  return lrintf((1.f + av_clipf(in, -1.f, 1.f)) * 0.5f * (w - 1));
149 }
150 
151 static int get_log_bin_abs(float in, int w)
152 {
153  return lrintf(av_clipf(1.f + log10f(fabsf(in)) / 6.f, 0.f, 1.f) * (w - 1));
154 }
155 
156 static int get_log_bin_sign(float in, int w)
157 {
158  return (w / 2) + FFSIGN(in) * lrintf(av_clipf(1.f + log10f(fabsf(in)) / 6.f, 0.f, 1.f) * (w / 2));
159 }
160 
161 static int config_output(AVFilterLink *outlink)
162 {
163  AudioHistogramContext *s = outlink->src->priv;
164 
165  outlink->w = s->w;
166  outlink->h = s->h;
167  outlink->sample_aspect_ratio = (AVRational){1,1};
168  outlink->frame_rate = s->frame_rate;
169  outlink->time_base = av_inv_q(outlink->frame_rate);
170 
171  s->histogram_h = s->h * s->phisto;
172  s->ypos = s->h * s->phisto;
173 
174  switch (s->ascale) {
175  case ALINEAR:
176  switch (s->hmode) {
177  case ABS: s->get_bin = get_lin_bin_abs; break;
178  case SIGN: s->get_bin = get_lin_bin_sign; break;
179  default:
180  return AVERROR_BUG;
181  }
182  break;
183  case ALOG:
184  switch (s->hmode) {
185  case ABS: s->get_bin = get_log_bin_abs; break;
186  case SIGN: s->get_bin = get_log_bin_sign; break;
187  default:
188  return AVERROR_BUG;
189  }
190  break;
191  default:
192  return AVERROR_BUG;
193  }
194 
195  if (s->dmode == SEPARATE) {
196  s->combine_buffer = av_malloc_array(outlink->w * 3, sizeof(*s->combine_buffer));
197  if (!s->combine_buffer)
198  return AVERROR(ENOMEM);
199  }
200 
201  return 0;
202 }
203 
204 static int filter_frame(AVFilterLink *inlink, AVFrame *in)
205 {
206  AVFilterContext *ctx = inlink->dst;
207  AVFilterLink *outlink = ctx->outputs[0];
208  AudioHistogramContext *s = ctx->priv;
209  const int nb_samples = in->nb_samples;
210  const int H = s->histogram_h;
211  const int w = s->w;
212  int c, y, n, p, bin, ret;
213  uint64_t acmax = 1;
214  AVFrame *clone;
215 
216  if (!s->out || s->out->width != outlink->w ||
217  s->out->height != outlink->h) {
218  av_frame_free(&s->out);
219  s->out = ff_get_video_buffer(outlink, outlink->w, outlink->h);
220  if (!s->out) {
221  av_frame_free(&in);
222  return AVERROR(ENOMEM);
223  }
224  for (n = H; n < s->h; n++) {
225  memset(s->out->data[0] + n * s->out->linesize[0], 0, w);
226  memset(s->out->data[1] + n * s->out->linesize[0], 127, w);
227  memset(s->out->data[2] + n * s->out->linesize[0], 127, w);
228  memset(s->out->data[3] + n * s->out->linesize[0], 0, w);
229  }
230  }
231 
232  ret = ff_inlink_make_frame_writable(outlink, &s->out);
233  if (ret < 0) {
234  av_frame_free(&in);
235  return ret;
236  }
237 
238  if (s->dmode == SEPARATE) {
239  for (y = 0; y < w; y++) {
240  s->combine_buffer[3 * y ] = 0;
241  s->combine_buffer[3 * y + 1] = 127.5;
242  s->combine_buffer[3 * y + 2] = 127.5;
243  }
244  }
245 
246  for (n = 0; n < H; n++) {
247  memset(s->out->data[0] + n * s->out->linesize[0], 0, w);
248  memset(s->out->data[1] + n * s->out->linesize[0], 127, w);
249  memset(s->out->data[2] + n * s->out->linesize[0], 127, w);
250  memset(s->out->data[3] + n * s->out->linesize[0], 0, w);
251  }
252  s->out->pts = av_rescale_q(in->pts, inlink->time_base, outlink->time_base);
253  s->out->duration = 1;
254 
255  s->first = s->frame_count;
256 
257  switch (s->ascale) {
258  case ALINEAR:
259  for (c = 0; c < inlink->ch_layout.nb_channels; c++) {
260  const float *src = (const float *)in->extended_data[c];
261  uint64_t *achistogram = &s->achistogram[(s->dmode == SINGLE ? 0: c) * w];
262 
263  for (n = 0; n < nb_samples; n++) {
264  bin = s->get_bin(src[n], w);
265 
266  achistogram[bin]++;
267  }
268 
269  if (s->in[s->first] && s->count >= 0) {
270  uint64_t *shistogram = &s->shistogram[(s->dmode == SINGLE ? 0: c) * w];
271  const float *src2 = (const float *)s->in[s->first]->extended_data[c];
272 
273  for (n = 0; n < nb_samples; n++) {
274  bin = s->get_bin(src2[n], w);
275 
276  shistogram[bin]++;
277  }
278  }
279  }
280  break;
281  case ALOG:
282  for (c = 0; c < inlink->ch_layout.nb_channels; c++) {
283  const float *src = (const float *)in->extended_data[c];
284  uint64_t *achistogram = &s->achistogram[(s->dmode == SINGLE ? 0: c) * w];
285 
286  for (n = 0; n < nb_samples; n++) {
287  bin = s->get_bin(src[n], w);
288 
289  achistogram[bin]++;
290  }
291 
292  if (s->in[s->first] && s->count >= 0) {
293  uint64_t *shistogram = &s->shistogram[(s->dmode == SINGLE ? 0: c) * w];
294  const float *src2 = (const float *)s->in[s->first]->extended_data[c];
295 
296  for (n = 0; n < nb_samples; n++) {
297  bin = s->get_bin(src2[n], w);
298 
299  shistogram[bin]++;
300  }
301  }
302  }
303  break;
304  }
305 
306  av_frame_free(&s->in[s->frame_count]);
307  s->in[s->frame_count] = in;
308  s->frame_count++;
309  if (s->frame_count > s->count)
310  s->frame_count = 0;
311 
312  for (n = 0; n < w * s->dchannels; n++) {
313  acmax = FFMAX(s->achistogram[n] - s->shistogram[n], acmax);
314  }
315 
316  for (c = 0; c < s->dchannels; c++) {
317  uint64_t *shistogram = &s->shistogram[c * w];
318  uint64_t *achistogram = &s->achistogram[c * w];
319  float yf, uf, vf;
320 
321  if (s->dmode == SEPARATE) {
322  yf = 255.0f / s->dchannels;
323  uf = yf * M_PI;
324  vf = yf * M_PI;
325  uf *= 0.5 * sin((2 * M_PI * c) / s->dchannels);
326  vf *= 0.5 * cos((2 * M_PI * c) / s->dchannels);
327  }
328 
329  for (n = 0; n < w; n++) {
330  double a, aa;
331  int h;
332 
333  a = achistogram[n] - shistogram[n];
334 
335  switch (s->scale) {
336  case LINEAR:
337  aa = a / (double)acmax;
338  break;
339  case SQRT:
340  aa = sqrt(a) / sqrt(acmax);
341  break;
342  case CBRT:
343  aa = cbrt(a) / cbrt(acmax);
344  break;
345  case LOG:
346  aa = log2(a + 1) / log2(acmax + 1);
347  break;
348  case RLOG:
349  aa = 1. - log2(a + 1) / log2(acmax + 1);
350  if (aa == 1.)
351  aa = 0;
352  break;
353  default:
354  av_assert0(0);
355  }
356 
357  h = aa * (H - 1);
358 
359  if (s->dmode == SINGLE) {
360  int start = H - h, end = H;
361  const int linesizey = s->out->linesize[0];
362  const int linesizea = s->out->linesize[3];
363  uint8_t *dsty = s->out->data[0] + start * linesizey;
364  uint8_t *dsta = s->out->data[3] + start * linesizea;
365 
366  for (y = start; y < end; y++, dsty += linesizey, dsta += linesizea) {
367  dsty[n] = 255;
368  dsta[n] = 255;
369  }
370 
371  if (s->h - H > 0) {
372  h = aa * 255;
373 
374  s->out->data[0][s->ypos * s->out->linesize[0] + n] = av_clip_uint8(h);
375  s->out->data[1][s->ypos * s->out->linesize[1] + n] = 127;
376  s->out->data[2][s->ypos * s->out->linesize[2] + n] = 127;
377  s->out->data[3][s->ypos * s->out->linesize[3] + n] = 255;
378  }
379  } else if (s->dmode == SEPARATE) {
380  int start = H - h, end = H;
381  float *out = &s->combine_buffer[3 * n];
382  const int linesizey = s->out->linesize[0];
383  const int linesizeu = s->out->linesize[1];
384  const int linesizev = s->out->linesize[2];
385  const int linesizea = s->out->linesize[3];
386  uint8_t *dsty = s->out->data[0] + start * linesizey;
387  uint8_t *dstu = s->out->data[1] + start * linesizeu;
388  uint8_t *dstv = s->out->data[2] + start * linesizev;
389  uint8_t *dsta = s->out->data[3] + start * linesizea;
390  int old;
391 
392  old = dsty[n];
393  for (y = start; y < end; y++) {
394  if (dsty[n] != old)
395  break;
396  old = dsty[n];
397  dsty[n] = av_clip_uint8(yf);
398  dstu[n] = av_clip_uint8(128.f+uf);
399  dstv[n] = av_clip_uint8(128.f+vf);
400  dsta[n] = 255;
401 
402  dsty += linesizey;
403  dstu += linesizeu;
404  dstv += linesizev;
405  dsta += linesizea;
406  }
407 
408  out[0] += aa * yf;
409  out[1] += aa * uf;
410  out[2] += aa * vf;
411  }
412  }
413  }
414 
415  if (s->h - H > 0) {
416  if (s->dmode == SEPARATE) {
417  for (n = 0; n < w; n++) {
418  float *cb = &s->combine_buffer[3 * n];
419 
420  s->out->data[0][s->ypos * s->out->linesize[0] + n] = cb[0];
421  s->out->data[1][s->ypos * s->out->linesize[1] + n] = cb[1];
422  s->out->data[2][s->ypos * s->out->linesize[2] + n] = cb[2];
423  s->out->data[3][s->ypos * s->out->linesize[3] + n] = 255;
424  }
425  }
426 
427  if (s->slide == SCROLL) {
428  for (p = 0; p < 4; p++) {
429  for (y = s->h - 1; y >= H + 1; y--) {
430  memmove(s->out->data[p] + (y ) * s->out->linesize[p],
431  s->out->data[p] + (y-1) * s->out->linesize[p], w);
432  }
433  }
434  }
435 
436  s->ypos++;
437  if (s->slide == SCROLL || s->ypos >= s->h)
438  s->ypos = H;
439  }
440 
441  clone = av_frame_clone(s->out);
442  if (!clone)
443  return AVERROR(ENOMEM);
444 
445  return ff_filter_frame(outlink, clone);
446 }
447 
448 static int activate(AVFilterContext *ctx)
449 {
450  AVFilterLink *inlink = ctx->inputs[0];
451  AVFilterLink *outlink = ctx->outputs[0];
452  AudioHistogramContext *s = ctx->priv;
453  AVFrame *in;
454  int ret;
455 
456  FF_FILTER_FORWARD_STATUS_BACK(outlink, inlink);
457 
458  ret = ff_inlink_consume_samples(inlink, s->nb_samples, s->nb_samples, &in);
459  if (ret < 0)
460  return ret;
461  if (ret > 0)
462  return filter_frame(inlink, in);
463 
464  if (ff_inlink_queued_samples(inlink) >= s->nb_samples) {
465  ff_filter_set_ready(ctx, 10);
466  return 0;
467  }
468 
469  FF_FILTER_FORWARD_STATUS(inlink, outlink);
470  FF_FILTER_FORWARD_WANTED(outlink, inlink);
471 
472  return FFERROR_NOT_READY;
473 }
474 
475 static av_cold void uninit(AVFilterContext *ctx)
476 {
477  AudioHistogramContext *s = ctx->priv;
478  int i;
479 
480  av_frame_free(&s->out);
481  av_freep(&s->shistogram);
482  av_freep(&s->achistogram);
483  av_freep(&s->combine_buffer);
484  for (i = 0; i < 101; i++)
485  av_frame_free(&s->in[i]);
486 }
487 
488 static const AVFilterPad ahistogram_inputs[] = {
489  {
490  .name = "default",
491  .type = AVMEDIA_TYPE_AUDIO,
492  .config_props = config_input,
493  },
494 };
495 
496 static const AVFilterPad ahistogram_outputs[] = {
497  {
498  .name = "default",
499  .type = AVMEDIA_TYPE_VIDEO,
500  .config_props = config_output,
501  },
502 };
503 
504 const AVFilter ff_avf_ahistogram = {
505  .name = "ahistogram",
506  .description = NULL_IF_CONFIG_SMALL("Convert input audio to histogram video output."),
507  .uninit = uninit,
508  .priv_size = sizeof(AudioHistogramContext),
509  .activate = activate,
510  FILTER_INPUTS(ahistogram_inputs),
511  FILTER_OUTPUTS(ahistogram_outputs),
512  FILTER_QUERY_FUNC(query_formats),
513  .priv_class = &ahistogram_class,
514 };
NB_SLIDES
@ NB_SLIDES
Definition: avf_ahistogram.c:32
formats
formats
Definition: signature.h:48
ff_get_video_buffer
AVFrame * ff_get_video_buffer(AVFilterLink *link, int w, int h)
Request a picture buffer with a specific set of permissions.
Definition: video.c:112
AV_SAMPLE_FMT_FLTP
@ AV_SAMPLE_FMT_FLTP
float, planar
Definition: samplefmt.h:66
AVFilterChannelLayouts
A list of supported channel layouts.
Definition: formats.h:85
AudioHistogramContext::histogram_h
int histogram_h
Definition: avf_ahistogram.c:46
AVPixelFormat
AVPixelFormat
Pixel format.
Definition: pixfmt.h:71
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
ff_make_format_list
AVFilterFormats * ff_make_format_list(const int *fmts)
Create a list of supported formats.
Definition: formats.c:436
out
FILE * out
Definition: movenc.c:55
LOG
@ LOG
Definition: avf_ahistogram.c:30
cb
static double cb(void *priv, double x, double y)
Definition: vf_geq.c:242
ff_filter_frame
int ff_filter_frame(AVFilterLink *link, AVFrame *frame)
Send a frame of data to the next filter.
Definition: avfilter.c:1015
sample_fmts
static enum AVSampleFormat sample_fmts[]
Definition: adpcmenc.c:948
ff_channel_layouts_ref
int ff_channel_layouts_ref(AVFilterChannelLayouts *f, AVFilterChannelLayouts **ref)
Add *ref as a new reference to f.
Definition: formats.c:674
layouts
enum MovChannelLayoutTag * layouts
Definition: mov_chan.c:337
FFERROR_NOT_READY
return FFERROR_NOT_READY
Definition: filter_design.txt:204
AudioHistogramContext::slide
int slide
Definition: avf_ahistogram.c:49
AV_OPT_TYPE_VIDEO_RATE
@ AV_OPT_TYPE_VIDEO_RATE
offset must point to AVRational
Definition: opt.h:248
NB_HMODES
@ NB_HMODES
Definition: avf_ahistogram.c:34
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
AudioHistogramContext::count
int count
Definition: avf_ahistogram.c:53
config_output
static int config_output(AVFilterLink *outlink)
Definition: avf_ahistogram.c:161
av_frame_free
void av_frame_free(AVFrame **frame)
Free the frame and any dynamically allocated objects in it, e.g.
Definition: frame.c:160
ff_all_channel_counts
AVFilterChannelLayouts * ff_all_channel_counts(void)
Construct an AVFilterChannelLayouts coding for any channel layout, with known or unknown disposition.
Definition: formats.c:622
AVFrame
This structure describes decoded (raw) audio or video data.
Definition: frame.h:374
AVFrame::pts
int64_t pts
Presentation timestamp in time_base units (time when frame should be shown to user).
Definition: frame.h:486
w
uint8_t w
Definition: llviddspenc.c:38
AVOption
AVOption.
Definition: opt.h:346
AudioHistogramContext::ascale
int ascale
Definition: avf_ahistogram.c:43
FILTER_QUERY_FUNC
#define FILTER_QUERY_FUNC(func)
Definition: internal.h:159
REPLACE
@ REPLACE
Definition: avf_ahistogram.c:32
SCROLL
@ SCROLL
Definition: avf_ahistogram.c:32
AudioHistogramContext::first
int first
Definition: avf_ahistogram.c:57
FLAGS
#define FLAGS
Definition: avf_ahistogram.c:64
FFMAX
#define FFMAX(a, b)
Definition: macros.h:47
AVFilter::name
const char * name
Filter name.
Definition: avfilter.h:170
video.h
FF_FILTER_FORWARD_STATUS_BACK
#define FF_FILTER_FORWARD_STATUS_BACK(outlink, inlink)
Forward the status on an output link to an input link.
Definition: filters.h:199
ALINEAR
@ ALINEAR
Definition: avf_ahistogram.c:31
AudioHistogramContext::w
int w
Definition: avf_ahistogram.c:39
AVFilterFormats
A list of supported formats for one end of a filter link.
Definition: formats.h:64
formats.h
NB_DMODES
@ NB_DMODES
Definition: avf_ahistogram.c:33
AudioHistogramContext::combine_buffer
float * combine_buffer
Definition: avf_ahistogram.c:55
AVFilterContext::priv
void * priv
private data for use by the filter
Definition: avfilter.h:422
log10f
#define log10f(x)
Definition: libm.h:414
FFSIGN
#define FFSIGN(a)
Definition: common.h:74
get_log_bin_abs
static int get_log_bin_abs(float in, int w)
Definition: avf_ahistogram.c:151
AudioHistogramContext::hmode
int hmode
Definition: avf_ahistogram.c:51
uninit
static av_cold void uninit(AVFilterContext *ctx)
Definition: avf_ahistogram.c:475
fabsf
static __device__ float fabsf(float a)
Definition: cuda_runtime.h:181
NB_SCALES
@ NB_SCALES
Definition: avf_ahistogram.c:30
ahistogram_outputs
static const AVFilterPad ahistogram_outputs[]
Definition: avf_ahistogram.c:496
AVFilterPad
A filter pad used for either input or output.
Definition: internal.h:33
cbrt
#define cbrt
Definition: tablegen.h:35
AudioHistogramContext::get_bin
int(* get_bin)(float in, int w)
Definition: avf_ahistogram.c:60
avassert.h
av_cold
#define av_cold
Definition: attributes.h:90
AmplitudeScale
AmplitudeScale
Definition: avf_ahistogram.c:31
s
#define s(width, name)
Definition: cbs_vp9.c:198
AudioHistogramContext::h
int h
Definition: avf_ahistogram.c:39
AudioHistogramContext::ypos
int ypos
Definition: avf_ahistogram.c:48
AVMEDIA_TYPE_AUDIO
@ AVMEDIA_TYPE_AUDIO
Definition: avutil.h:202
ff_formats_ref
int ff_formats_ref(AVFilterFormats *f, AVFilterFormats **ref)
Add *ref as a new reference to formats.
Definition: formats.c:679
av_assert0
#define av_assert0(cond)
assert() equivalent, that is always enabled.
Definition: avassert.h:40
SQRT
@ SQRT
Definition: avf_ahistogram.c:30
filters.h
pix_fmts
static enum AVPixelFormat pix_fmts[]
Definition: libkvazaar.c:304
config_input
static int config_input(AVFilterLink *inlink)
Definition: avf_ahistogram.c:123
ctx
AVFormatContext * ctx
Definition: movenc.c:49
av_frame_clone
AVFrame * av_frame_clone(const AVFrame *src)
Create a new frame that references the same data as src.
Definition: frame.c:593
av_rescale_q
int64_t av_rescale_q(int64_t a, AVRational bq, AVRational cq)
Rescale a 64-bit integer by 2 rational numbers.
Definition: mathematics.c:142
FILTER_INPUTS
#define FILTER_INPUTS(array)
Definition: internal.h:182
OFFSET
#define OFFSET(x)
Definition: avf_ahistogram.c:63
ff_inlink_make_frame_writable
int ff_inlink_make_frame_writable(AVFilterLink *link, AVFrame **rframe)
Make sure a frame is writable.
Definition: avfilter.c:1489
AudioHistogramContext::apos
int apos
Definition: avf_ahistogram.c:47
ALOG
@ ALOG
Definition: avf_ahistogram.c:31
AVClass
Describe the class of an AVClass context structure.
Definition: log.h:66
ff_inlink_consume_samples
int ff_inlink_consume_samples(AVFilterLink *link, unsigned min, unsigned max, AVFrame **rframe)
Take samples from the link's FIFO and update the link's stats.
Definition: avfilter.c:1462
NULL
#define NULL
Definition: coverity.c:32
get_log_bin_sign
static int get_log_bin_sign(float in, int w)
Definition: avf_ahistogram.c:156
AVRational
Rational number (pair of numerator and denominator).
Definition: rational.h:58
AudioHistogramContext::dchannels
int dchannels
Definition: avf_ahistogram.c:52
AV_OPT_TYPE_IMAGE_SIZE
@ AV_OPT_TYPE_IMAGE_SIZE
offset must point to two consecutive integers
Definition: opt.h:245
double
double
Definition: af_crystalizer.c:131
av_clipf
av_clipf
Definition: af_crystalizer.c:121
AudioHistogramContext::frame_rate
AVRational frame_rate
Definition: avf_ahistogram.c:40
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
AudioHistogramContext::in
AVFrame * in[101]
Definition: avf_ahistogram.c:56
AudioHistogramContext
Definition: avf_ahistogram.c:36
f
f
Definition: af_crystalizer.c:121
SIGN
@ SIGN
Definition: avf_ahistogram.c:34
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
for
for(k=2;k<=8;++k)
Definition: h264pred_template.c:425
SINGLE
@ SINGLE
Definition: avf_ahistogram.c:33
RLOG
@ RLOG
Definition: avf_ahistogram.c:30
AV_SAMPLE_FMT_NONE
@ AV_SAMPLE_FMT_NONE
Definition: samplefmt.h:56
get_lin_bin_abs
static int get_lin_bin_abs(float in, int w)
Definition: avf_ahistogram.c:141
a
The reader does not expect b to be semantically here and if the code is changed by maybe adding a a division or other the signedness will almost certainly be mistaken To avoid this confusion a new type was SUINT is the C unsigned type but it holds a signed int to use the same example SUINT a
Definition: undefined.txt:41
AV_PIX_FMT_YUVA444P
@ AV_PIX_FMT_YUVA444P
planar YUV 4:4:4 32bpp, (1 Cr & Cb sample per 1x1 Y & A samples)
Definition: pixfmt.h:174
H
#define H
Definition: pixlet.c:39
FF_FILTER_FORWARD_WANTED
FF_FILTER_FORWARD_WANTED(outlink, inlink)
filter_frame
static int filter_frame(AVFilterLink *inlink, AVFrame *in)
Definition: avf_ahistogram.c:204
get_lin_bin_sign
static int get_lin_bin_sign(float in, int w)
Definition: avf_ahistogram.c:146
AVFILTER_DEFINE_CLASS
AVFILTER_DEFINE_CLASS(ahistogram)
M_PI
#define M_PI
Definition: mathematics.h:67
CBRT
@ CBRT
Definition: avf_ahistogram.c:30
internal.h
AV_OPT_TYPE_FLOAT
@ AV_OPT_TYPE_FLOAT
Definition: opt.h:238
AudioHistogramContext::phisto
float phisto
Definition: avf_ahistogram.c:45
ABS
@ ABS
Definition: avf_ahistogram.c:34
AVFrame::nb_samples
int nb_samples
number of audio samples (per channel) described by this frame
Definition: frame.h:454
lrintf
#define lrintf(x)
Definition: libm_mips.h:72
i
#define i(width, name, range_min, range_max)
Definition: cbs_h2645.c:256
AudioHistogramContext::dmode
int dmode
Definition: avf_ahistogram.c:50
AVFrame::extended_data
uint8_t ** extended_data
pointers to the data planes/channels.
Definition: frame.h:435
LINEAR
@ LINEAR
Definition: avf_ahistogram.c:30
AudioHistogramContext::scale
int scale
Definition: avf_ahistogram.c:44
src2
const pixel * src2
Definition: h264pred_template.c:422
av_malloc_array
#define av_malloc_array(a, b)
Definition: tableprint_vlc.h:31
HistogramMode
HistogramMode
Definition: avf_ahistogram.c:34
AVSampleFormat
AVSampleFormat
Audio sample formats.
Definition: samplefmt.h:55
ff_avf_ahistogram
const AVFilter ff_avf_ahistogram
Definition: avf_ahistogram.c:504
av_inv_q
static av_always_inline AVRational av_inv_q(AVRational q)
Invert a rational.
Definition: rational.h:159
AudioHistogramContext::nb_samples
int nb_samples
Definition: avf_ahistogram.c:58
AVFilterPad::name
const char * name
Pad name.
Definition: internal.h:39
ff_inlink_queued_samples
int ff_inlink_queued_samples(AVFilterLink *link)
Definition: avfilter.c:1417
av_rescale
int64_t av_rescale(int64_t a, int64_t b, int64_t c)
Rescale a 64-bit integer with rounding to nearest.
Definition: mathematics.c:129
av_calloc
void * av_calloc(size_t nmemb, size_t size)
Definition: mem.c:264
log2
#define log2(x)
Definition: libm.h:404
AVFilter
Filter definition.
Definition: avfilter.h:166
ret
ret
Definition: filter_design.txt:187
AudioHistogramContext::out
AVFrame * out
Definition: avf_ahistogram.c:38
NB_ASCALES
@ NB_ASCALES
Definition: avf_ahistogram.c:31
ahistogram_inputs
static const AVFilterPad ahistogram_inputs[]
Definition: avf_ahistogram.c:488
SEPARATE
@ SEPARATE
Definition: avf_ahistogram.c:33
ff_all_samplerates
AVFilterFormats * ff_all_samplerates(void)
Definition: formats.c:607
AV_PIX_FMT_NONE
@ AV_PIX_FMT_NONE
Definition: pixfmt.h:72
AV_OPT_TYPE_INT
@ AV_OPT_TYPE_INT
Definition: opt.h:235
avfilter.h
av_clip_uint8
#define av_clip_uint8
Definition: common.h:105
AVFilterContext
An instance of a filter.
Definition: avfilter.h:407
query_formats
static int query_formats(AVFilterContext *ctx)
Definition: avf_ahistogram.c:96
DisplayMode
DisplayMode
Definition: avf_ahistogram.c:33
AVMEDIA_TYPE_VIDEO
@ AVMEDIA_TYPE_VIDEO
Definition: avutil.h:201
AudioHistogramContext::shistogram
uint64_t * shistogram
Definition: avf_ahistogram.c:42
mem.h
AVFilterFormatsConfig::formats
AVFilterFormats * formats
List of supported formats (pixel or sample).
Definition: avfilter.h:510
DisplayScale
DisplayScale
Definition: avf_ahistogram.c:30
scale
static void scale(int *out, const int *in, const int w, const int h, const int shift)
Definition: intra.c:291
FF_FILTER_FORWARD_STATUS
FF_FILTER_FORWARD_STATUS(inlink, outlink)
FILTER_OUTPUTS
#define FILTER_OUTPUTS(array)
Definition: internal.h:183
av_freep
#define av_freep(p)
Definition: tableprint_vlc.h:34
src
INIT_CLIP pixel * src
Definition: h264pred_template.c:418
AudioHistogramContext::frame_count
int frame_count
Definition: avf_ahistogram.c:54
AVERROR_BUG
#define AVERROR_BUG
Internal bug, also see AVERROR_BUG2.
Definition: error.h:52
ahistogram_options
static const AVOption ahistogram_options[]
Definition: avf_ahistogram.c:66
h
h
Definition: vp9dsp_template.c:2038
activate
static int activate(AVFilterContext *ctx)
Definition: avf_ahistogram.c:448
int
int
Definition: ffmpeg_filter.c:424
AV_OPT_TYPE_CONST
@ AV_OPT_TYPE_CONST
Definition: opt.h:244
AudioHistogramContext::achistogram
uint64_t * achistogram
Definition: avf_ahistogram.c:41
SlideMode
SlideMode
Definition: avf_ahistogram.c:32
ff_filter_set_ready
void ff_filter_set_ready(AVFilterContext *filter, unsigned priority)
Mark a filter ready and schedule it for activation.
Definition: avfilter.c:235
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