FFmpeg
vf_deflicker.c
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1 /*
2  * Copyright (c) 2017 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/imgutils.h"
22 #include "libavutil/opt.h"
23 #include "libavutil/pixdesc.h"
24 #include "libavutil/qsort.h"
25 #include "avfilter.h"
26 
27 #define FF_BUFQUEUE_SIZE 129
28 #include "bufferqueue.h"
29 
30 #include "formats.h"
31 #include "internal.h"
32 #include "video.h"
33 
34 #define SIZE FF_BUFQUEUE_SIZE
35 
45 };
46 
47 typedef struct DeflickerContext {
48  const AVClass *class;
49 
50  int size;
51  int mode;
52  int bypass;
53 
54  int eof;
55  int depth;
56  int nb_planes;
57  int planewidth[4];
58  int planeheight[4];
59 
60  uint64_t *histogram;
61  float luminance[SIZE];
62  float sorted[SIZE];
63 
64  struct FFBufQueue q;
65  int available;
66 
69  int (*deflicker)(AVFilterContext *ctx, const uint8_t *src, ptrdiff_t src_linesize,
70  uint8_t *dst, ptrdiff_t dst_linesize, int w, int h, float f);
72 
73 #define OFFSET(x) offsetof(DeflickerContext, x)
74 #define FLAGS AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_FILTERING_PARAM
75 
76 static const AVOption deflicker_options[] = {
77  { "size", "set how many frames to use", OFFSET(size), AV_OPT_TYPE_INT, {.i64=5}, 2, SIZE, FLAGS },
78  { "s", "set how many frames to use", OFFSET(size), AV_OPT_TYPE_INT, {.i64=5}, 2, SIZE, FLAGS },
79  { "mode", "set how to smooth luminance", OFFSET(mode), AV_OPT_TYPE_INT, {.i64=0}, 0, NB_SMOOTH_MODE-1, FLAGS, "mode" },
80  { "m", "set how to smooth luminance", OFFSET(mode), AV_OPT_TYPE_INT, {.i64=0}, 0, NB_SMOOTH_MODE-1, FLAGS, "mode" },
81  { "am", "arithmetic mean", 0, AV_OPT_TYPE_CONST, {.i64=ARITHMETIC_MEAN}, 0, 0, FLAGS, "mode" },
82  { "gm", "geometric mean", 0, AV_OPT_TYPE_CONST, {.i64=GEOMETRIC_MEAN}, 0, 0, FLAGS, "mode" },
83  { "hm", "harmonic mean", 0, AV_OPT_TYPE_CONST, {.i64=HARMONIC_MEAN}, 0, 0, FLAGS, "mode" },
84  { "qm", "quadratic mean", 0, AV_OPT_TYPE_CONST, {.i64=QUADRATIC_MEAN}, 0, 0, FLAGS, "mode" },
85  { "cm", "cubic mean", 0, AV_OPT_TYPE_CONST, {.i64=CUBIC_MEAN}, 0, 0, FLAGS, "mode" },
86  { "pm", "power mean", 0, AV_OPT_TYPE_CONST, {.i64=POWER_MEAN}, 0, 0, FLAGS, "mode" },
87  { "median", "median", 0, AV_OPT_TYPE_CONST, {.i64=MEDIAN}, 0, 0, FLAGS, "mode" },
88  { "bypass", "leave frames unchanged", OFFSET(bypass), AV_OPT_TYPE_BOOL, {.i64=0}, 0, 1, FLAGS },
89  { NULL }
90 };
91 
93 
95 {
96  static const enum AVPixelFormat pixel_fmts[] = {
117  };
119  if (!formats)
120  return AVERROR(ENOMEM);
121  return ff_set_common_formats(ctx, formats);
122 }
123 
125  const uint8_t *src, ptrdiff_t src_linesize,
126  uint8_t *dst, ptrdiff_t dst_linesize,
127  int w, int h, float f)
128 {
129  int x, y;
130 
131  for (y = 0; y < h; y++) {
132  for (x = 0; x < w; x++) {
133  dst[x] = av_clip_uint8(src[x] * f);
134  }
135 
136  dst += dst_linesize;
137  src += src_linesize;
138  }
139 
140  return 0;
141 }
142 
144  const uint8_t *ssrc, ptrdiff_t src_linesize,
145  uint8_t *ddst, ptrdiff_t dst_linesize,
146  int w, int h, float f)
147 {
148  DeflickerContext *s = ctx->priv;
149  const uint16_t *src = (const uint16_t *)ssrc;
150  uint16_t *dst = (uint16_t *)ddst;
151  const int max = (1 << s->depth) - 1;
152  int x, y;
153 
154  for (y = 0; y < h; y++) {
155  for (x = 0; x < w; x++) {
156  dst[x] = av_clip(src[x] * f, 0, max);
157  }
158 
159  dst += dst_linesize / 2;
160  src += src_linesize / 2;
161  }
162 
163  return 0;
164 }
165 
167 {
168  DeflickerContext *s = ctx->priv;
169  const uint8_t *src = in->data[0];
170  int64_t sum = 0;
171  int y, x;
172 
173  memset(s->histogram, 0, (1 << s->depth) * sizeof(*s->histogram));
174 
175  for (y = 0; y < s->planeheight[0]; y++) {
176  for (x = 0; x < s->planewidth[0]; x++) {
177  s->histogram[src[x]]++;
178  }
179  src += in->linesize[0];
180  }
181 
182  for (y = 0; y < 1 << s->depth; y++) {
183  sum += s->histogram[y] * y;
184  }
185 
186  return 1.0f * sum / (s->planeheight[0] * s->planewidth[0]);
187 }
188 
190 {
191  DeflickerContext *s = ctx->priv;
192  const uint16_t *src = (const uint16_t *)in->data[0];
193  int64_t sum = 0;
194  int y, x;
195 
196  memset(s->histogram, 0, (1 << s->depth) * sizeof(*s->histogram));
197 
198  for (y = 0; y < s->planeheight[0]; y++) {
199  for (x = 0; x < s->planewidth[0]; x++) {
200  s->histogram[src[x]]++;
201  }
202  src += in->linesize[0] / 2;
203  }
204 
205  for (y = 0; y < 1 << s->depth; y++) {
206  sum += s->histogram[y] * y;
207  }
208 
209  return 1.0f * sum / (s->planeheight[0] * s->planewidth[0]);
210 }
211 
212 static void get_am_factor(AVFilterContext *ctx, float *f)
213 {
214  DeflickerContext *s = ctx->priv;
215  int y;
216 
217  *f = 0.0f;
218 
219  for (y = 0; y < s->size; y++) {
220  *f += s->luminance[y];
221  }
222 
223  *f /= s->size;
224  *f /= s->luminance[0];
225 }
226 
227 static void get_gm_factor(AVFilterContext *ctx, float *f)
228 {
229  DeflickerContext *s = ctx->priv;
230  int y;
231 
232  *f = 1;
233 
234  for (y = 0; y < s->size; y++) {
235  *f *= s->luminance[y];
236  }
237 
238  *f = pow(*f, 1.0f / s->size);
239  *f /= s->luminance[0];
240 }
241 
242 static void get_hm_factor(AVFilterContext *ctx, float *f)
243 {
244  DeflickerContext *s = ctx->priv;
245  int y;
246 
247  *f = 0.0f;
248 
249  for (y = 0; y < s->size; y++) {
250  *f += 1.0f / s->luminance[y];
251  }
252 
253  *f = s->size / *f;
254  *f /= s->luminance[0];
255 }
256 
257 static void get_qm_factor(AVFilterContext *ctx, float *f)
258 {
259  DeflickerContext *s = ctx->priv;
260  int y;
261 
262  *f = 0.0f;
263 
264  for (y = 0; y < s->size; y++) {
265  *f += s->luminance[y] * s->luminance[y];
266  }
267 
268  *f /= s->size;
269  *f = sqrtf(*f);
270  *f /= s->luminance[0];
271 }
272 
273 static void get_cm_factor(AVFilterContext *ctx, float *f)
274 {
275  DeflickerContext *s = ctx->priv;
276  int y;
277 
278  *f = 0.0f;
279 
280  for (y = 0; y < s->size; y++) {
281  *f += s->luminance[y] * s->luminance[y] * s->luminance[y];
282  }
283 
284  *f /= s->size;
285  *f = cbrtf(*f);
286  *f /= s->luminance[0];
287 }
288 
289 static void get_pm_factor(AVFilterContext *ctx, float *f)
290 {
291  DeflickerContext *s = ctx->priv;
292  int y;
293 
294  *f = 0.0f;
295 
296  for (y = 0; y < s->size; y++) {
297  *f += powf(s->luminance[y], s->size);
298  }
299 
300  *f /= s->size;
301  *f = powf(*f, 1.0f / s->size);
302  *f /= s->luminance[0];
303 }
304 
305 static int comparef(const void *a, const void *b)
306 {
307  const float *aa = a, *bb = b;
308  return round(aa - bb);
309 }
310 
311 static void get_median_factor(AVFilterContext *ctx, float *f)
312 {
313  DeflickerContext *s = ctx->priv;
314 
315  memcpy(s->sorted, s->luminance, sizeof(s->sorted));
316  AV_QSORT(s->sorted, s->size, float, comparef);
317 
318  *f = s->sorted[s->size >> 1] / s->luminance[0];
319 }
320 
322 {
324  AVFilterContext *ctx = inlink->dst;
325  DeflickerContext *s = ctx->priv;
326 
327  s->nb_planes = desc->nb_components;
328 
329  s->planeheight[1] = s->planeheight[2] = AV_CEIL_RSHIFT(inlink->h, desc->log2_chroma_h);
330  s->planeheight[0] = s->planeheight[3] = inlink->h;
331  s->planewidth[1] = s->planewidth[2] = AV_CEIL_RSHIFT(inlink->w, desc->log2_chroma_w);
332  s->planewidth[0] = s->planewidth[3] = inlink->w;
333 
334  s->depth = desc->comp[0].depth;
335  if (s->depth == 8) {
336  s->deflicker = deflicker8;
337  s->calc_avgy = calc_avgy8;
338  } else {
339  s->deflicker = deflicker16;
340  s->calc_avgy = calc_avgy16;
341  }
342 
343  s->histogram = av_calloc(1 << s->depth, sizeof(*s->histogram));
344  if (!s->histogram)
345  return AVERROR(ENOMEM);
346 
347  switch (s->mode) {
348  case MEDIAN: s->get_factor = get_median_factor; break;
349  case ARITHMETIC_MEAN: s->get_factor = get_am_factor; break;
350  case GEOMETRIC_MEAN: s->get_factor = get_gm_factor; break;
351  case HARMONIC_MEAN: s->get_factor = get_hm_factor; break;
352  case QUADRATIC_MEAN: s->get_factor = get_qm_factor; break;
353  case CUBIC_MEAN: s->get_factor = get_cm_factor; break;
354  case POWER_MEAN: s->get_factor = get_pm_factor; break;
355  }
356 
357  return 0;
358 }
359 
361 {
362  AVFilterContext *ctx = inlink->dst;
363  AVFilterLink *outlink = ctx->outputs[0];
364  DeflickerContext *s = ctx->priv;
365  AVDictionary **metadata;
366  AVFrame *out, *in;
367  float f;
368  int y;
369 
370  if (s->q.available < s->size && !s->eof) {
371  s->luminance[s->available] = s->calc_avgy(ctx, buf);
372  ff_bufqueue_add(ctx, &s->q, buf);
373  s->available++;
374  return 0;
375  }
376 
377  in = ff_bufqueue_peek(&s->q, 0);
378 
379  out = ff_get_video_buffer(outlink, outlink->w, outlink->h);
380  if (!out) {
381  av_frame_free(&buf);
382  return AVERROR(ENOMEM);
383  }
384 
385  s->get_factor(ctx, &f);
386  if (!s->bypass)
387  s->deflicker(ctx, in->data[0], in->linesize[0], out->data[0], out->linesize[0],
388  outlink->w, outlink->h, f);
389  for (y = 1 - s->bypass; y < s->nb_planes; y++) {
390  av_image_copy_plane(out->data[y], out->linesize[y],
391  in->data[y], in->linesize[y],
392  s->planewidth[y] * (1 + (s->depth > 8)), s->planeheight[y]);
393  }
394 
395  av_frame_copy_props(out, in);
396  metadata = &out->metadata;
397  if (metadata) {
398  uint8_t value[128];
399 
400  snprintf(value, sizeof(value), "%f", s->luminance[0]);
401  av_dict_set(metadata, "lavfi.deflicker.luminance", value, 0);
402 
403  snprintf(value, sizeof(value), "%f", s->luminance[0] * f);
404  av_dict_set(metadata, "lavfi.deflicker.new_luminance", value, 0);
405 
406  snprintf(value, sizeof(value), "%f", f - 1.0f);
407  av_dict_set(metadata, "lavfi.deflicker.relative_change", value, 0);
408  }
409 
410  in = ff_bufqueue_get(&s->q);
411  av_frame_free(&in);
412  memmove(&s->luminance[0], &s->luminance[1], sizeof(*s->luminance) * (s->size - 1));
413  s->luminance[s->available - 1] = s->calc_avgy(ctx, buf);
414  ff_bufqueue_add(ctx, &s->q, buf);
415 
416  return ff_filter_frame(outlink, out);
417 }
418 
419 static int request_frame(AVFilterLink *outlink)
420 {
421  AVFilterContext *ctx = outlink->src;
422  DeflickerContext *s = ctx->priv;
423  int ret;
424 
425  ret = ff_request_frame(ctx->inputs[0]);
426  if (ret == AVERROR_EOF && s->available > 0) {
427  AVFrame *buf = ff_bufqueue_peek(&s->q, s->available - 1);
428  if (!buf)
429  return AVERROR(ENOMEM);
430  buf = av_frame_clone(buf);
431  if (!buf)
432  return AVERROR(ENOMEM);
433 
434  s->eof = 1;
435  ret = filter_frame(ctx->inputs[0], buf);
436  s->available--;
437  }
438 
439  return ret;
440 }
441 
443 {
444  DeflickerContext *s = ctx->priv;
445 
447  av_freep(&s->histogram);
448 }
449 
450 static const AVFilterPad inputs[] = {
451  {
452  .name = "default",
453  .type = AVMEDIA_TYPE_VIDEO,
454  .filter_frame = filter_frame,
455  .config_props = config_input,
456  },
457  { NULL }
458 };
459 
460 static const AVFilterPad outputs[] = {
461  {
462  .name = "default",
463  .type = AVMEDIA_TYPE_VIDEO,
464  .request_frame = request_frame,
465  },
466  { NULL }
467 };
468 
470  .name = "deflicker",
471  .description = NULL_IF_CONFIG_SMALL("Remove temporal frame luminance variations."),
472  .priv_size = sizeof(DeflickerContext),
473  .priv_class = &deflicker_class,
474  .uninit = uninit,
476  .inputs = inputs,
477  .outputs = outputs,
478 };
static AVFrame * ff_bufqueue_get(struct FFBufQueue *queue)
Get the first buffer from the queue and remove it.
Definition: bufferqueue.h:98
#define NULL
Definition: coverity.c:32
static int comparef(const void *a, const void *b)
Definition: vf_deflicker.c:305
#define AV_PIX_FMT_YUVA422P16
Definition: pixfmt.h:430
#define AV_PIX_FMT_YUV440P10
Definition: pixfmt.h:389
#define AV_PIX_FMT_YUVA422P9
Definition: pixfmt.h:422
const AVPixFmtDescriptor * av_pix_fmt_desc_get(enum AVPixelFormat pix_fmt)
Definition: pixdesc.c:2522
This structure describes decoded (raw) audio or video data.
Definition: frame.h:295
static void get_hm_factor(AVFilterContext *ctx, float *f)
Definition: vf_deflicker.c:242
AVOption.
Definition: opt.h:246
#define AV_PIX_FMT_YUVA420P10
Definition: pixfmt.h:424
#define AV_PIX_FMT_YUV444P14
Definition: pixfmt.h:397
#define AV_PIX_FMT_YUVA422P10
Definition: pixfmt.h:425
planar YUV 4:4:4, 24bpp, (1 Cr & Cb sample per 1x1 Y samples)
Definition: pixfmt.h:71
misc image utilities
Main libavfilter public API header.
const char * desc
Definition: nvenc.c:68
static void get_am_factor(AVFilterContext *ctx, float *f)
Definition: vf_deflicker.c:212
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:36
#define AV_PIX_FMT_GRAY9
Definition: pixfmt.h:367
#define AV_PIX_FMT_YUV420P12
Definition: pixfmt.h:391
AVFrame * ff_get_video_buffer(AVFilterLink *link, int w, int h)
Request a picture buffer with a specific set of permissions.
Definition: video.c:99
#define OFFSET(x)
Definition: vf_deflicker.c:73
#define src
Definition: vp8dsp.c:254
uint8_t log2_chroma_w
Amount to shift the luma width right to find the chroma width.
Definition: pixdesc.h:92
#define FLAGS
Definition: vf_deflicker.c:74
static const AVOption deflicker_options[]
Definition: vf_deflicker.c:76
void * av_calloc(size_t nmemb, size_t size)
Non-inlined equivalent of av_mallocz_array().
Definition: mem.c:244
AVFilterFormats * ff_make_format_list(const int *fmts)
Create a list of supported formats.
Definition: formats.c:283
Structure holding the queue.
Definition: bufferqueue.h:49
#define AV_PIX_FMT_GRAY10
Definition: pixfmt.h:368
const char * name
Pad name.
Definition: internal.h:60
#define AV_PIX_FMT_GRAY12
Definition: pixfmt.h:369
AVFilterLink ** inputs
array of pointers to input links
Definition: avfilter.h:346
int ff_filter_frame(AVFilterLink *link, AVFrame *frame)
Send a frame of data to the next filter.
Definition: avfilter.c:1075
planar YUV 4:2:0, 20bpp, (1 Cr & Cb sample per 2x2 Y & A samples)
Definition: pixfmt.h:101
AVComponentDescriptor comp[4]
Parameters that describe how pixels are packed.
Definition: pixdesc.h:117
uint8_t
#define av_cold
Definition: attributes.h:82
AVOptions.
#define f(width, name)
Definition: cbs_vp9.c:255
GLsizei GLboolean const GLfloat * value
Definition: opengl_enc.c:108
float(* calc_avgy)(AVFilterContext *ctx, AVFrame *in)
Definition: vf_deflicker.c:68
static void get_pm_factor(AVFilterContext *ctx, float *f)
Definition: vf_deflicker.c:289
#define AV_PIX_FMT_YUVA420P9
Definition: pixfmt.h:421
planar YUV 4:4:0 full scale (JPEG), deprecated in favor of AV_PIX_FMT_YUV440P and setting color_range...
Definition: pixfmt.h:100
planar YUV 4:2:2, 16bpp, full scale (JPEG), deprecated in favor of AV_PIX_FMT_YUV422P and setting col...
Definition: pixfmt.h:79
#define AVERROR_EOF
End of file.
Definition: error.h:55
AVDictionary * metadata
metadata.
Definition: frame.h:581
#define AV_PIX_FMT_YUV444P16
Definition: pixfmt.h:400
#define max(a, b)
Definition: cuda_runtime.h:33
ptrdiff_t size
Definition: opengl_enc.c:100
#define AV_PIX_FMT_YUV422P12
Definition: pixfmt.h:392
#define AV_PIX_FMT_YUVA420P16
Definition: pixfmt.h:429
A filter pad used for either input or output.
Definition: internal.h:54
#define SIZE
Definition: vf_deflicker.c:34
planar YUV 4:2:2 24bpp, (1 Cr & Cb sample per 2x1 Y & A samples)
Definition: pixfmt.h:176
static int deflicker16(AVFilterContext *ctx, const uint8_t *ssrc, ptrdiff_t src_linesize, uint8_t *ddst, ptrdiff_t dst_linesize, int w, int h, float f)
Definition: vf_deflicker.c:143
int ff_set_common_formats(AVFilterContext *ctx, AVFilterFormats *formats)
A helper for query_formats() which sets all links to the same list of formats.
Definition: formats.c:569
uint8_t log2_chroma_h
Amount to shift the luma height right to find the chroma height.
Definition: pixdesc.h:101
void av_frame_free(AVFrame **frame)
Free the frame and any dynamically allocated objects in it, e.g.
Definition: frame.c:202
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
Definition: internal.h:186
static int request_frame(AVFilterLink *outlink)
Definition: vf_deflicker.c:419
void * priv
private data for use by the filter
Definition: avfilter.h:353
#define AV_PIX_FMT_YUVA444P16
Definition: pixfmt.h:431
static float calc_avgy8(AVFilterContext *ctx, AVFrame *in)
Definition: vf_deflicker.c:166
static av_always_inline av_const double round(double x)
Definition: libm.h:444
#define AV_PIX_FMT_YUV444P10
Definition: pixfmt.h:390
void(* get_factor)(AVFilterContext *ctx, float *f)
Definition: vf_deflicker.c:67
static av_cold void uninit(AVFilterContext *ctx)
Definition: vf_deflicker.c:442
planar YUV 4:2:2, 16bpp, (1 Cr & Cb sample per 2x1 Y samples)
Definition: pixfmt.h:70
#define powf(x, y)
Definition: libm.h:50
static const AVFilterPad outputs[]
Definition: vf_deflicker.c:460
#define AV_PIX_FMT_YUV422P9
Definition: pixfmt.h:385
uint8_t nb_components
The number of components each pixel has, (1-4)
Definition: pixdesc.h:83
#define b
Definition: input.c:41
#define AV_PIX_FMT_GRAY16
Definition: pixfmt.h:371
planar YUV 4:2:0, 12bpp, full scale (JPEG), deprecated in favor of AV_PIX_FMT_YUV420P and setting col...
Definition: pixfmt.h:78
#define AV_PIX_FMT_YUVA444P12
Definition: pixfmt.h:428
uint8_t w
Definition: llviddspenc.c:38
typedef void(APIENTRY *FF_PFNGLACTIVETEXTUREPROC)(GLenum texture)
AVFormatContext * ctx
Definition: movenc.c:48
uint64_t * histogram
Definition: vf_deflicker.c:60
#define s(width, name)
Definition: cbs_vp9.c:257
#define AV_PIX_FMT_YUVA444P10
Definition: pixfmt.h:426
static void ff_bufqueue_discard_all(struct FFBufQueue *queue)
Unref and remove all buffers from the queue.
Definition: bufferqueue.h:111
#define AV_PIX_FMT_YUV444P9
Definition: pixfmt.h:386
AVFrame * av_frame_clone(const AVFrame *src)
Create a new frame that references the same data as src.
Definition: frame.c:540
static int query_formats(AVFilterContext *ctx)
Definition: vf_deflicker.c:94
#define AV_PIX_FMT_YUV420P16
Definition: pixfmt.h:398
static void get_median_factor(AVFilterContext *ctx, float *f)
Definition: vf_deflicker.c:311
#define AV_PIX_FMT_YUV420P14
Definition: pixfmt.h:395
unsigned short available
number of available buffers
Definition: bufferqueue.h:52
int linesize[AV_NUM_DATA_POINTERS]
For video, size in bytes of each picture line.
Definition: frame.h:326
static const AVFilterPad inputs[]
Definition: vf_deflicker.c:450
planar YUV 4:4:4 32bpp, (1 Cr & Cb sample per 1x1 Y & A samples)
Definition: pixfmt.h:177
Descriptor that unambiguously describes how the bits of a pixel are stored in the up to 4 data planes...
Definition: pixdesc.h:81
#define AV_PIX_FMT_GRAY14
Definition: pixfmt.h:370
void * buf
Definition: avisynth_c.h:766
static av_always_inline float cbrtf(float x)
Definition: libm.h:61
int(* deflicker)(AVFilterContext *ctx, const uint8_t *src, ptrdiff_t src_linesize, uint8_t *dst, ptrdiff_t dst_linesize, int w, int h, float f)
Definition: vf_deflicker.c:69
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:70
uint8_t pi<< 24) CONV_FUNC_GROUP(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_U8, uint8_t,(*(const uint8_t *) pi-0x80)*(1.0f/(1<< 7))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_U8, uint8_t,(*(const uint8_t *) pi-0x80)*(1.0/(1<< 7))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_S16, int16_t,(*(const int16_t *) pi >> 8)+0x80) CONV_FUNC_GROUP(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_S16, int16_t,*(const int16_t *) pi *(1.0f/(1<< 15))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_S16, int16_t,*(const int16_t *) pi *(1.0/(1<< 15))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_S32, int32_t,(*(const int32_t *) pi >> 24)+0x80) CONV_FUNC_GROUP(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_S32, int32_t,*(const int32_t *) pi *(1.0f/(1U<< 31))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_S32, int32_t,*(const int32_t *) pi *(1.0/(1U<< 31))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_FLT, float, av_clip_uint8(lrintf(*(const float *) pi *(1<< 7))+0x80)) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S16, int16_t, AV_SAMPLE_FMT_FLT, float, av_clip_int16(lrintf(*(const float *) pi *(1<< 15)))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_FLT, float, av_clipl_int32(llrintf(*(const float *) pi *(1U<< 31)))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_DBL, double, av_clip_uint8(lrint(*(const double *) pi *(1<< 7))+0x80)) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S16, int16_t, AV_SAMPLE_FMT_DBL, double, av_clip_int16(lrint(*(const double *) pi *(1<< 15)))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_DBL, double, av_clipl_int32(llrint(*(const double *) pi *(1U<< 31))))#define SET_CONV_FUNC_GROUP(ofmt, ifmt) static void set_generic_function(AudioConvert *ac){}void ff_audio_convert_free(AudioConvert **ac){if(!*ac) return;ff_dither_free(&(*ac) ->dc);av_freep(ac);}AudioConvert *ff_audio_convert_alloc(AVAudioResampleContext *avr, enum AVSampleFormat out_fmt, enum AVSampleFormat in_fmt, int channels, int sample_rate, int apply_map){AudioConvert *ac;int in_planar, out_planar;ac=av_mallocz(sizeof(*ac));if(!ac) return NULL;ac->avr=avr;ac->out_fmt=out_fmt;ac->in_fmt=in_fmt;ac->channels=channels;ac->apply_map=apply_map;if(avr->dither_method!=AV_RESAMPLE_DITHER_NONE &&av_get_packed_sample_fmt(out_fmt)==AV_SAMPLE_FMT_S16 &&av_get_bytes_per_sample(in_fmt) > 2){ac->dc=ff_dither_alloc(avr, out_fmt, in_fmt, channels, sample_rate, apply_map);if(!ac->dc){av_free(ac);return NULL;}return ac;}in_planar=ff_sample_fmt_is_planar(in_fmt, channels);out_planar=ff_sample_fmt_is_planar(out_fmt, channels);if(in_planar==out_planar){ac->func_type=CONV_FUNC_TYPE_FLAT;ac->planes=in_planar?ac->channels:1;}else if(in_planar) ac->func_type=CONV_FUNC_TYPE_INTERLEAVE;else ac->func_type=CONV_FUNC_TYPE_DEINTERLEAVE;set_generic_function(ac);if(ARCH_AARCH64) ff_audio_convert_init_aarch64(ac);if(ARCH_ARM) ff_audio_convert_init_arm(ac);if(ARCH_X86) ff_audio_convert_init_x86(ac);return ac;}int ff_audio_convert(AudioConvert *ac, AudioData *out, AudioData *in){int use_generic=1;int len=in->nb_samples;int p;if(ac->dc){av_log(ac->avr, AV_LOG_TRACE,"%d samples - audio_convert: %s to %s (dithered)\n", len, av_get_sample_fmt_name(ac->in_fmt), av_get_sample_fmt_name(ac->out_fmt));return ff_convert_dither(ac-> in
#define AV_PIX_FMT_YUV420P10
Definition: pixfmt.h:387
planar YUV 4:1:0, 9bpp, (1 Cr & Cb sample per 4x4 Y samples)
Definition: pixfmt.h:72
Describe the class of an AVClass context structure.
Definition: log.h:67
static int filter_frame(AVFilterLink *inlink, AVFrame *buf)
Definition: vf_deflicker.c:360
Filter definition.
Definition: avfilter.h:144
AVFILTER_DEFINE_CLASS(deflicker)
const char * name
Filter name.
Definition: avfilter.h:148
#define AV_PIX_FMT_YUV440P12
Definition: pixfmt.h:393
#define AV_PIX_FMT_YUV420P9
Definition: pixfmt.h:384
#define snprintf
Definition: snprintf.h:34
AVFilterLink ** outputs
array of pointers to output links
Definition: avfilter.h:350
static int config_input(AVFilterLink *inlink)
Definition: vf_deflicker.c:321
#define AV_PIX_FMT_YUV422P14
Definition: pixfmt.h:396
#define AV_PIX_FMT_YUV422P10
Definition: pixfmt.h:388
#define AV_PIX_FMT_YUV444P12
Definition: pixfmt.h:394
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
Definition: frame.h:309
smooth_mode
Definition: vf_deflicker.c:36
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
int
planar YUV 4:2:0, 12bpp, (1 Cr & Cb sample per 2x2 Y samples)
Definition: pixfmt.h:66
Y , 8bpp.
Definition: pixfmt.h:74
static float calc_avgy16(AVFilterContext *ctx, AVFrame *in)
Definition: vf_deflicker.c:189
static int deflicker8(AVFilterContext *ctx, const uint8_t *src, ptrdiff_t src_linesize, uint8_t *dst, ptrdiff_t dst_linesize, int w, int h, float f)
Definition: vf_deflicker.c:124
float sorted[SIZE]
Definition: vf_deflicker.c:62
#define AV_PIX_FMT_YUVA444P9
Definition: pixfmt.h:423
planar YUV 4:4:4, 24bpp, full scale (JPEG), deprecated in favor of AV_PIX_FMT_YUV444P and setting col...
Definition: pixfmt.h:80
planar YUV 4:1:1, 12bpp, (1 Cr & Cb sample per 4x1 Y samples)
Definition: pixfmt.h:73
A list of supported formats for one end of a filter link.
Definition: formats.h:64
planar YUV 4:1:1, 12bpp, (1 Cr & Cb sample per 4x1 Y samples) full scale (JPEG), deprecated in favor ...
Definition: pixfmt.h:258
struct FFBufQueue q
Definition: vf_deflicker.c:64
An instance of a filter.
Definition: avfilter.h:338
static void get_qm_factor(AVFilterContext *ctx, float *f)
Definition: vf_deflicker.c:257
FILE * out
Definition: movenc.c:54
#define av_freep(p)
planar YUV 4:4:0 (1 Cr & Cb sample per 1x2 Y samples)
Definition: pixfmt.h:99
static void ff_bufqueue_add(void *log, struct FFBufQueue *queue, AVFrame *buf)
Add a buffer to the queue.
Definition: bufferqueue.h:71
AVFilter ff_vf_deflicker
Definition: vf_deflicker.c:469
int ff_request_frame(AVFilterLink *link)
Request an input frame from the filter at the other end of the link.
Definition: avfilter.c:407
formats
Definition: signature.h:48
static void get_cm_factor(AVFilterContext *ctx, float *f)
Definition: vf_deflicker.c:273
void av_image_copy_plane(uint8_t *dst, int dst_linesize, const uint8_t *src, int src_linesize, int bytewidth, int height)
Copy image plane from src to dst.
Definition: imgutils.c:338
internal API functions
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
int depth
Number of bits in the component.
Definition: pixdesc.h:58
AVPixelFormat
Pixel format.
Definition: pixfmt.h:64
float luminance[SIZE]
Definition: vf_deflicker.c:61
static void get_gm_factor(AVFilterContext *ctx, float *f)
Definition: vf_deflicker.c:227
mode
Use these values in ebur128_init (or&#39;ed).
Definition: ebur128.h:83
#define AV_PIX_FMT_YUV422P16
Definition: pixfmt.h:399
#define AV_QSORT(p, num, type, cmp)
Quicksort This sort is fast, and fully inplace but not stable and it is possible to construct input t...
Definition: qsort.h:33
int av_frame_copy_props(AVFrame *dst, const AVFrame *src)
Copy only "metadata" fields from src to dst.
Definition: frame.c:654
#define AV_PIX_FMT_YUVA422P12
Definition: pixfmt.h:427
#define AV_CEIL_RSHIFT(a, b)
Definition: common.h:58
static AVFrame * ff_bufqueue_peek(struct FFBufQueue *queue, unsigned index)
Get a buffer from the queue without altering it.
Definition: bufferqueue.h:87