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/opt.h"
23 #include "libavutil/parseutils.h"
24 #include "avfilter.h"
25 #include "filters.h"
26 #include "formats.h"
27 #include "audio.h"
28 #include "video.h"
29 #include "internal.h"
30 
31 enum DisplayScale { LINEAR, SQRT, CBRT, LOG, RLOG, NB_SCALES };
32 enum AmplitudeScale { ALINEAR, ALOG, NB_ASCALES };
33 enum SlideMode { REPLACE, SCROLL, NB_SLIDES };
34 enum DisplayMode { SINGLE, SEPARATE, NB_DMODES };
35 enum HistogramMode { ABS, SIGN, NB_HMODES };
36 
37 typedef struct AudioHistogramContext {
38  const AVClass *class;
39  AVFrame *out;
40  int w, h;
41  AVRational frame_rate;
42  uint64_t *achistogram;
43  uint64_t *shistogram;
44  int ascale;
45  int scale;
46  float phisto;
47  int histogram_h;
48  int apos;
49  int ypos;
50  int slide;
51  int dmode;
52  int hmode;
53  int dchannels;
54  int count;
55  int frame_count;
56  float *combine_buffer;
57  AVFrame *in[101];
58  int first;
59  int nb_samples;
60 
61  int (*get_bin)(float in, int w);
62 } AudioHistogramContext;
63 
64 #define OFFSET(x) offsetof(AudioHistogramContext, x)
65 #define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM
66 
67 static const AVOption ahistogram_options[] = {
68  { "dmode", "set method to display channels", OFFSET(dmode), AV_OPT_TYPE_INT, {.i64=SINGLE}, 0, NB_DMODES-1, FLAGS, "dmode" },
69  { "single", "all channels use single histogram", 0, AV_OPT_TYPE_CONST, {.i64=SINGLE}, 0, 0, FLAGS, "dmode" },
70  { "separate", "each channel have own histogram", 0, AV_OPT_TYPE_CONST, {.i64=SEPARATE}, 0, 0, FLAGS, "dmode" },
71  { "rate", "set video rate", OFFSET(frame_rate), AV_OPT_TYPE_VIDEO_RATE, {.str="25"}, 0, INT_MAX, FLAGS },
72  { "r", "set video rate", OFFSET(frame_rate), AV_OPT_TYPE_VIDEO_RATE, {.str="25"}, 0, INT_MAX, FLAGS },
73  { "size", "set video size", OFFSET(w), AV_OPT_TYPE_IMAGE_SIZE, {.str="hd720"}, 0, 0, FLAGS },
74  { "s", "set video size", OFFSET(w), AV_OPT_TYPE_IMAGE_SIZE, {.str="hd720"}, 0, 0, FLAGS },
75  { "scale", "set display scale", OFFSET(scale), AV_OPT_TYPE_INT, {.i64=LOG}, LINEAR, NB_SCALES-1, FLAGS, "scale" },
76  { "log", "logarithmic", 0, AV_OPT_TYPE_CONST, {.i64=LOG}, 0, 0, FLAGS, "scale" },
77  { "sqrt", "square root", 0, AV_OPT_TYPE_CONST, {.i64=SQRT}, 0, 0, FLAGS, "scale" },
78  { "cbrt", "cubic root", 0, AV_OPT_TYPE_CONST, {.i64=CBRT}, 0, 0, FLAGS, "scale" },
79  { "lin", "linear", 0, AV_OPT_TYPE_CONST, {.i64=LINEAR}, 0, 0, FLAGS, "scale" },
80  { "rlog", "reverse logarithmic", 0, AV_OPT_TYPE_CONST, {.i64=RLOG}, 0, 0, FLAGS, "scale" },
81  { "ascale", "set amplitude scale", OFFSET(ascale), AV_OPT_TYPE_INT, {.i64=ALOG}, LINEAR, NB_ASCALES-1, FLAGS, "ascale" },
82  { "log", "logarithmic", 0, AV_OPT_TYPE_CONST, {.i64=ALOG}, 0, 0, FLAGS, "ascale" },
83  { "lin", "linear", 0, AV_OPT_TYPE_CONST, {.i64=ALINEAR}, 0, 0, FLAGS, "ascale" },
84  { "acount", "how much frames to accumulate", OFFSET(count), AV_OPT_TYPE_INT, {.i64=1}, -1, 100, FLAGS },
85  { "rheight", "set histogram ratio of window height", OFFSET(phisto), AV_OPT_TYPE_FLOAT, {.dbl=0.10}, 0, 1, FLAGS },
86  { "slide", "set sonogram sliding", OFFSET(slide), AV_OPT_TYPE_INT, {.i64=REPLACE}, 0, NB_SLIDES-1, FLAGS, "slide" },
87  { "replace", "replace old rows with new", 0, AV_OPT_TYPE_CONST, {.i64=REPLACE}, 0, 0, FLAGS, "slide" },
88  { "scroll", "scroll from top to bottom", 0, AV_OPT_TYPE_CONST, {.i64=SCROLL}, 0, 0, FLAGS, "slide" },
89  { "hmode", "set histograms mode", OFFSET(hmode), AV_OPT_TYPE_INT, {.i64=ABS}, 0, NB_HMODES-1, FLAGS, "hmode" },
90  { "abs", "use absolute samples", 0, AV_OPT_TYPE_CONST, {.i64=ABS}, 0, 0, FLAGS, "hmode" },
91  { "sign", "use unchanged samples", 0, AV_OPT_TYPE_CONST, {.i64=SIGN},0, 0, FLAGS, "hmode" },
92  { NULL }
93 };
94 
95 AVFILTER_DEFINE_CLASS(ahistogram);
96 
97 static int query_formats(AVFilterContext *ctx)
98 {
99  AVFilterFormats *formats = NULL;
100  AVFilterChannelLayouts *layouts = NULL;
101  AVFilterLink *inlink = ctx->inputs[0];
102  AVFilterLink *outlink = ctx->outputs[0];
103  static const enum AVSampleFormat sample_fmts[] = { AV_SAMPLE_FMT_FLTP, AV_SAMPLE_FMT_NONE };
104  static const enum AVPixelFormat pix_fmts[] = { AV_PIX_FMT_YUVA444P, AV_PIX_FMT_NONE };
105  int ret = AVERROR(EINVAL);
106 
107  formats = ff_make_format_list(sample_fmts);
108  if ((ret = ff_formats_ref (formats, &inlink->outcfg.formats )) < 0 ||
109  (layouts = ff_all_channel_counts()) == NULL ||
110  (ret = ff_channel_layouts_ref (layouts, &inlink->outcfg.channel_layouts)) < 0)
111  return ret;
112 
113  formats = ff_all_samplerates();
114  if ((ret = ff_formats_ref(formats, &inlink->outcfg.samplerates)) < 0)
115  return ret;
116 
117  formats = ff_make_format_list(pix_fmts);
118  if ((ret = ff_formats_ref(formats, &outlink->incfg.formats)) < 0)
119  return ret;
120 
121  return 0;
122 }
123 
124 static int config_input(AVFilterLink *inlink)
125 {
126  AVFilterContext *ctx = inlink->dst;
127  AudioHistogramContext *s = ctx->priv;
128 
129  s->nb_samples = FFMAX(1, av_rescale(inlink->sample_rate, s->frame_rate.den, s->frame_rate.num));
130  s->dchannels = s->dmode == SINGLE ? 1 : inlink->ch_layout.nb_channels;
131  s->shistogram = av_calloc(s->w, s->dchannels * sizeof(*s->shistogram));
132  if (!s->shistogram)
133  return AVERROR(ENOMEM);
134 
135  s->achistogram = av_calloc(s->w, s->dchannels * sizeof(*s->achistogram));
136  if (!s->achistogram)
137  return AVERROR(ENOMEM);
138 
139  return 0;
140 }
141 
142 static int get_lin_bin_abs(float in, int w)
143 {
144  return lrintf(av_clipf(fabsf(in), 0.f, 1.f) * (w - 1));
145 }
146 
147 static int get_lin_bin_sign(float in, int w)
148 {
149  return lrintf((1.f + av_clipf(in, -1.f, 1.f)) * 0.5f * (w - 1));
150 }
151 
152 static int get_log_bin_abs(float in, int w)
153 {
154  return lrintf(av_clipf(1.f + log10f(fabsf(in)) / 6.f, 0.f, 1.f) * (w - 1));
155 }
156 
157 static int get_log_bin_sign(float in, int w)
158 {
159  return (w / 2) + FFSIGN(in) * lrintf(av_clipf(1.f + log10f(fabsf(in)) / 6.f, 0.f, 1.f) * (w / 2));
160 }
161 
162 static int config_output(AVFilterLink *outlink)
163 {
164  AudioHistogramContext *s = outlink->src->priv;
165 
166  outlink->w = s->w;
167  outlink->h = s->h;
168  outlink->sample_aspect_ratio = (AVRational){1,1};
169  outlink->frame_rate = s->frame_rate;
170  outlink->time_base = av_inv_q(outlink->frame_rate);
171 
172  s->histogram_h = s->h * s->phisto;
173  s->ypos = s->h * s->phisto;
174 
175  switch (s->ascale) {
176  case ALINEAR:
177  switch (s->hmode) {
178  case ABS: s->get_bin = get_lin_bin_abs; break;
179  case SIGN: s->get_bin = get_lin_bin_sign; break;
180  default:
181  return AVERROR_BUG;
182  }
183  break;
184  case ALOG:
185  switch (s->hmode) {
186  case ABS: s->get_bin = get_log_bin_abs; break;
187  case SIGN: s->get_bin = get_log_bin_sign; break;
188  default:
189  return AVERROR_BUG;
190  }
191  break;
192  default:
193  return AVERROR_BUG;
194  }
195 
196  if (s->dmode == SEPARATE) {
197  s->combine_buffer = av_malloc_array(outlink->w * 3, sizeof(*s->combine_buffer));
198  if (!s->combine_buffer)
199  return AVERROR(ENOMEM);
200  }
201 
202  return 0;
203 }
204 
205 static int filter_frame(AVFilterLink *inlink, AVFrame *in)
206 {
207  AVFilterContext *ctx = inlink->dst;
208  AVFilterLink *outlink = ctx->outputs[0];
209  AudioHistogramContext *s = ctx->priv;
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 < in->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 < in->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 < in->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 < in->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 
361  for (y = H - h; y < H; y++) {
362  s->out->data[0][y * s->out->linesize[0] + n] = 255;
363  s->out->data[3][y * s->out->linesize[0] + n] = 255;
364  }
365 
366  if (s->h - H > 0) {
367  h = aa * 255;
368 
369  s->out->data[0][s->ypos * s->out->linesize[0] + n] = av_clip_uint8(h);
370  s->out->data[1][s->ypos * s->out->linesize[1] + n] = 127;
371  s->out->data[2][s->ypos * s->out->linesize[2] + n] = 127;
372  s->out->data[3][s->ypos * s->out->linesize[3] + n] = 255;
373  }
374  } else if (s->dmode == SEPARATE) {
375  float *out = &s->combine_buffer[3 * n];
376  int old;
377 
378  old = s->out->data[0][(H - h) * s->out->linesize[0] + n];
379  for (y = H - h; y < H; y++) {
380  if (s->out->data[0][y * s->out->linesize[0] + n] != old)
381  break;
382  old = s->out->data[0][y * s->out->linesize[0] + n];
383  s->out->data[0][y * s->out->linesize[0] + n] = av_clip_uint8(yf);
384  s->out->data[1][y * s->out->linesize[1] + n] = av_clip_uint8(128.f+uf);
385  s->out->data[2][y * s->out->linesize[2] + n] = av_clip_uint8(128.f+vf);
386  s->out->data[3][y * s->out->linesize[3] + n] = 255;
387  }
388 
389  out[0] += aa * yf;
390  out[1] += aa * uf;
391  out[2] += aa * vf;
392  }
393  }
394  }
395 
396  if (s->h - H > 0) {
397  if (s->dmode == SEPARATE) {
398  for (n = 0; n < w; n++) {
399  float *cb = &s->combine_buffer[3 * n];
400 
401  s->out->data[0][s->ypos * s->out->linesize[0] + n] = cb[0];
402  s->out->data[1][s->ypos * s->out->linesize[1] + n] = cb[1];
403  s->out->data[2][s->ypos * s->out->linesize[2] + n] = cb[2];
404  s->out->data[3][s->ypos * s->out->linesize[3] + n] = 255;
405  }
406  }
407 
408  if (s->slide == SCROLL) {
409  for (p = 0; p < 4; p++) {
410  for (y = s->h - 1; y >= H + 1; y--) {
411  memmove(s->out->data[p] + (y ) * s->out->linesize[p],
412  s->out->data[p] + (y-1) * s->out->linesize[p], w);
413  }
414  }
415  }
416 
417  s->ypos++;
418  if (s->slide == SCROLL || s->ypos >= s->h)
419  s->ypos = H;
420  }
421 
422  clone = av_frame_clone(s->out);
423  if (!clone)
424  return AVERROR(ENOMEM);
425 
426  return ff_filter_frame(outlink, clone);
427 }
428 
429 static int activate(AVFilterContext *ctx)
430 {
431  AVFilterLink *inlink = ctx->inputs[0];
432  AVFilterLink *outlink = ctx->outputs[0];
433  AudioHistogramContext *s = ctx->priv;
434  AVFrame *in;
435  int ret;
436 
437  FF_FILTER_FORWARD_STATUS_BACK(outlink, inlink);
438 
439  ret = ff_inlink_consume_samples(inlink, s->nb_samples, s->nb_samples, &in);
440  if (ret < 0)
441  return ret;
442  if (ret > 0)
443  return filter_frame(inlink, in);
444 
445  if (ff_inlink_queued_samples(inlink) >= s->nb_samples) {
446  ff_filter_set_ready(ctx, 10);
447  return 0;
448  }
449 
450  FF_FILTER_FORWARD_STATUS(inlink, outlink);
451  FF_FILTER_FORWARD_WANTED(outlink, inlink);
452 
453  return FFERROR_NOT_READY;
454 }
455 
456 static av_cold void uninit(AVFilterContext *ctx)
457 {
458  AudioHistogramContext *s = ctx->priv;
459  int i;
460 
461  av_frame_free(&s->out);
462  av_freep(&s->shistogram);
463  av_freep(&s->achistogram);
464  av_freep(&s->combine_buffer);
465  for (i = 0; i < 101; i++)
466  av_frame_free(&s->in[i]);
467 }
468 
469 static const AVFilterPad ahistogram_inputs[] = {
470  {
471  .name = "default",
472  .type = AVMEDIA_TYPE_AUDIO,
473  .config_props = config_input,
474  },
475 };
476 
477 static const AVFilterPad ahistogram_outputs[] = {
478  {
479  .name = "default",
480  .type = AVMEDIA_TYPE_VIDEO,
481  .config_props = config_output,
482  },
483 };
484 
485 const AVFilter ff_avf_ahistogram = {
486  .name = "ahistogram",
487  .description = NULL_IF_CONFIG_SMALL("Convert input audio to histogram video output."),
488  .uninit = uninit,
489  .priv_size = sizeof(AudioHistogramContext),
490  .activate = activate,
491  FILTER_INPUTS(ahistogram_inputs),
492  FILTER_OUTPUTS(ahistogram_outputs),
493  FILTER_QUERY_FUNC(query_formats),
494  .priv_class = &ahistogram_class,
495 };
NB_SLIDES
@ NB_SLIDES
Definition: avf_ahistogram.c:33
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:101
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:47
AVPixelFormat
AVPixelFormat
Pixel format.
Definition: pixfmt.h:64
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:380
out
FILE * out
Definition: movenc.c:54
LOG
@ LOG
Definition: avf_ahistogram.c:31
cb
static double cb(void *priv, double x, double y)
Definition: vf_geq.c:239
ff_filter_frame
int ff_filter_frame(AVFilterLink *link, AVFrame *frame)
Send a frame of data to the next filter.
Definition: avfilter.c:969
sample_fmts
static enum AVSampleFormat sample_fmts[]
Definition: adpcmenc.c:947
ff_channel_layouts_ref
int ff_channel_layouts_ref(AVFilterChannelLayouts *f, AVFilterChannelLayouts **ref)
Add *ref as a new reference to f.
Definition: formats.c:591
layouts
enum MovChannelLayoutTag * layouts
Definition: mov_chan.c:326
FFERROR_NOT_READY
return FFERROR_NOT_READY
Definition: filter_design.txt:204
AudioHistogramContext::slide
int slide
Definition: avf_ahistogram.c:50
AV_OPT_TYPE_VIDEO_RATE
@ AV_OPT_TYPE_VIDEO_RATE
offset must point to AVRational
Definition: opt.h:238
NB_HMODES
@ NB_HMODES
Definition: avf_ahistogram.c:35
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:54
config_output
static int config_output(AVFilterLink *outlink)
Definition: avf_ahistogram.c:162
av_frame_free
void av_frame_free(AVFrame **frame)
Free the frame and any dynamically allocated objects in it, e.g.
Definition: frame.c:99
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:566
AVFrame
This structure describes decoded (raw) audio or video data.
Definition: frame.h:330
AVFrame::pts
int64_t pts
Presentation timestamp in time_base units (time when frame should be shown to user).
Definition: frame.h:437
w
uint8_t w
Definition: llviddspenc.c:38
AVOption
AVOption.
Definition: opt.h:251
AudioHistogramContext::ascale
int ascale
Definition: avf_ahistogram.c:44
FILTER_QUERY_FUNC
#define FILTER_QUERY_FUNC(func)
Definition: internal.h:171
REPLACE
@ REPLACE
Definition: avf_ahistogram.c:33
SCROLL
@ SCROLL
Definition: avf_ahistogram.c:33
AudioHistogramContext::first
int first
Definition: avf_ahistogram.c:58
FLAGS
#define FLAGS
Definition: avf_ahistogram.c:65
FFMAX
#define FFMAX(a, b)
Definition: macros.h:47
AVFilter::name
const char * name
Filter name.
Definition: avfilter.h:165
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:32
AudioHistogramContext::w
int w
Definition: avf_ahistogram.c:40
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:34
AudioHistogramContext::combine_buffer
float * combine_buffer
Definition: avf_ahistogram.c:56
AVFilterContext::priv
void * priv
private data for use by the filter
Definition: avfilter.h:407
log10f
#define log10f(x)
Definition: libm.h:414
FFSIGN
#define FFSIGN(a)
Definition: common.h:65
get_log_bin_abs
static int get_log_bin_abs(float in, int w)
Definition: avf_ahistogram.c:152
AudioHistogramContext::hmode
int hmode
Definition: avf_ahistogram.c:52
scale
static av_always_inline float scale(float x, float s)
Definition: vf_v360.c:1389
uninit
static av_cold void uninit(AVFilterContext *ctx)
Definition: avf_ahistogram.c:456
fabsf
static __device__ float fabsf(float a)
Definition: cuda_runtime.h:181
NB_SCALES
@ NB_SCALES
Definition: avf_ahistogram.c:31
ahistogram_outputs
static const AVFilterPad ahistogram_outputs[]
Definition: avf_ahistogram.c:477
AVFilterPad
A filter pad used for either input or output.
Definition: internal.h:49
cbrt
#define cbrt
Definition: tablegen.h:35
AudioHistogramContext::get_bin
int(* get_bin)(float in, int w)
Definition: avf_ahistogram.c:61
avassert.h
av_cold
#define av_cold
Definition: attributes.h:90
AmplitudeScale
AmplitudeScale
Definition: avf_ahistogram.c:32
s
#define s(width, name)
Definition: cbs_vp9.c:256
AudioHistogramContext::h
int h
Definition: avf_ahistogram.c:40
AudioHistogramContext::ypos
int ypos
Definition: avf_ahistogram.c:49
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:596
av_assert0
#define av_assert0(cond)
assert() equivalent, that is always enabled.
Definition: avassert.h:37
SQRT
@ SQRT
Definition: avf_ahistogram.c:31
filters.h
pix_fmts
static enum AVPixelFormat pix_fmts[]
Definition: libkvazaar.c:296
config_input
static int config_input(AVFilterLink *inlink)
Definition: avf_ahistogram.c:124
ctx
AVFormatContext * ctx
Definition: movenc.c:48
av_frame_clone
AVFrame * av_frame_clone(const AVFrame *src)
Create a new frame that references the same data as src.
Definition: frame.c:465
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:194
OFFSET
#define OFFSET(x)
Definition: avf_ahistogram.c:64
ff_inlink_make_frame_writable
int ff_inlink_make_frame_writable(AVFilterLink *link, AVFrame **rframe)
Make sure a frame is writable.
Definition: avfilter.c:1408
AudioHistogramContext::apos
int apos
Definition: avf_ahistogram.c:48
ALOG
@ ALOG
Definition: avf_ahistogram.c:32
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:1383
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:157
AVRational
Rational number (pair of numerator and denominator).
Definition: rational.h:58
AudioHistogramContext::dchannels
int dchannels
Definition: avf_ahistogram.c:53
AV_OPT_TYPE_IMAGE_SIZE
@ AV_OPT_TYPE_IMAGE_SIZE
offset must point to two consecutive integers
Definition: opt.h:235
parseutils.h
double
double
Definition: af_crystalizer.c:132
av_clipf
av_clipf
Definition: af_crystalizer.c:122
AudioHistogramContext::frame_rate
AVRational frame_rate
Definition: avf_ahistogram.c:41
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:57
AudioHistogramContext
Definition: avf_ahistogram.c:37
f
f
Definition: af_crystalizer.c:122
SIGN
@ SIGN
Definition: avf_ahistogram.c:35
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:115
for
for(k=2;k<=8;++k)
Definition: h264pred_template.c:425
SINGLE
@ SINGLE
Definition: avf_ahistogram.c:34
RLOG
@ RLOG
Definition: avf_ahistogram.c:31
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:142
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:167
H
#define H
Definition: pixlet.c:38
FF_FILTER_FORWARD_WANTED
FF_FILTER_FORWARD_WANTED(outlink, inlink)
filter_frame
static int filter_frame(AVFilterLink *inlink, AVFrame *in)
Definition: avf_ahistogram.c:205
get_lin_bin_sign
static int get_lin_bin_sign(float in, int w)
Definition: avf_ahistogram.c:147
AVFILTER_DEFINE_CLASS
AVFILTER_DEFINE_CLASS(ahistogram)
M_PI
#define M_PI
Definition: mathematics.h:52
CBRT
@ CBRT
Definition: avf_ahistogram.c:31
internal.h
AV_OPT_TYPE_FLOAT
@ AV_OPT_TYPE_FLOAT
Definition: opt.h:228
AudioHistogramContext::phisto
float phisto
Definition: avf_ahistogram.c:46
ABS
@ ABS
Definition: avf_ahistogram.c:35
AVFrame::nb_samples
int nb_samples
number of audio samples (per channel) described by this frame
Definition: frame.h:410
lrintf
#define lrintf(x)
Definition: libm_mips.h:72
i
#define i(width, name, range_min, range_max)
Definition: cbs_h2645.c:269
AudioHistogramContext::dmode
int dmode
Definition: avf_ahistogram.c:51
AVFrame::extended_data
uint8_t ** extended_data
pointers to the data planes/channels.
Definition: frame.h:391
LINEAR
@ LINEAR
Definition: avf_ahistogram.c:31
AudioHistogramContext::scale
int scale
Definition: avf_ahistogram.c:45
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:35
AVSampleFormat
AVSampleFormat
Audio sample formats.
Definition: samplefmt.h:55
ff_avf_ahistogram
const AVFilter ff_avf_ahistogram
Definition: avf_ahistogram.c:485
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:59
AVFilterPad::name
const char * name
Pad name.
Definition: internal.h:55
ff_inlink_queued_samples
int ff_inlink_queued_samples(AVFilterLink *link)
Definition: avfilter.c:1343
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:262
log2
#define log2(x)
Definition: libm.h:404
AVFilter
Filter definition.
Definition: avfilter.h:161
ret
ret
Definition: filter_design.txt:187
AudioHistogramContext::out
AVFrame * out
Definition: avf_ahistogram.c:39
NB_ASCALES
@ NB_ASCALES
Definition: avf_ahistogram.c:32
ahistogram_inputs
static const AVFilterPad ahistogram_inputs[]
Definition: avf_ahistogram.c:469
SEPARATE
@ SEPARATE
Definition: avf_ahistogram.c:34
ff_all_samplerates
AVFilterFormats * ff_all_samplerates(void)
Definition: formats.c:551
AV_PIX_FMT_NONE
@ AV_PIX_FMT_NONE
Definition: pixfmt.h:65
AV_OPT_TYPE_INT
@ AV_OPT_TYPE_INT
Definition: opt.h:225
avfilter.h
av_clip_uint8
#define av_clip_uint8
Definition: common.h:101
AVFilterContext
An instance of a filter.
Definition: avfilter.h:392
query_formats
static int query_formats(AVFilterContext *ctx)
Definition: avf_ahistogram.c:97
DisplayMode
DisplayMode
Definition: avf_ahistogram.c:34
AVMEDIA_TYPE_VIDEO
@ AVMEDIA_TYPE_VIDEO
Definition: avutil.h:201
AudioHistogramContext::shistogram
uint64_t * shistogram
Definition: avf_ahistogram.c:43
audio.h
AVFilterFormatsConfig::formats
AVFilterFormats * formats
List of supported formats (pixel or sample).
Definition: avfilter.h:496
DisplayScale
DisplayScale
Definition: avf_ahistogram.c:31
FF_FILTER_FORWARD_STATUS
FF_FILTER_FORWARD_STATUS(inlink, outlink)
FILTER_OUTPUTS
#define FILTER_OUTPUTS(array)
Definition: internal.h:195
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:55
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:67
h
h
Definition: vp9dsp_template.c:2038
activate
static int activate(AVFilterContext *ctx)
Definition: avf_ahistogram.c:429
int
int
Definition: ffmpeg_filter.c:156
AV_OPT_TYPE_CONST
@ AV_OPT_TYPE_CONST
Definition: opt.h:234
AudioHistogramContext::achistogram
uint64_t * achistogram
Definition: avf_ahistogram.c:42
SlideMode
SlideMode
Definition: avf_ahistogram.c:33
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:204
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