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[] = {
113  };
115  if (!formats)
116  return AVERROR(ENOMEM);
117  return ff_set_common_formats(ctx, formats);
118 }
119 
121  const uint8_t *src, ptrdiff_t src_linesize,
122  uint8_t *dst, ptrdiff_t dst_linesize,
123  int w, int h, float f)
124 {
125  int x, y;
126 
127  for (y = 0; y < h; y++) {
128  for (x = 0; x < w; x++) {
129  dst[x] = av_clip_uint8(src[x] * f);
130  }
131 
132  dst += dst_linesize;
133  src += src_linesize;
134  }
135 
136  return 0;
137 }
138 
140  const uint8_t *ssrc, ptrdiff_t src_linesize,
141  uint8_t *ddst, ptrdiff_t dst_linesize,
142  int w, int h, float f)
143 {
144  DeflickerContext *s = ctx->priv;
145  const uint16_t *src = (const uint16_t *)ssrc;
146  uint16_t *dst = (uint16_t *)ddst;
147  const int max = (1 << s->depth) - 1;
148  int x, y;
149 
150  for (y = 0; y < h; y++) {
151  for (x = 0; x < w; x++) {
152  dst[x] = av_clip(src[x] * f, 0, max);
153  }
154 
155  dst += dst_linesize / 2;
156  src += src_linesize / 2;
157  }
158 
159  return 0;
160 }
161 
163 {
164  DeflickerContext *s = ctx->priv;
165  const uint8_t *src = in->data[0];
166  int64_t sum = 0;
167  int y, x;
168 
169  memset(s->histogram, 0, (1 << s->depth) * sizeof(*s->histogram));
170 
171  for (y = 0; y < s->planeheight[0]; y++) {
172  for (x = 0; x < s->planewidth[0]; x++) {
173  s->histogram[src[x]]++;
174  }
175  src += in->linesize[0];
176  }
177 
178  for (y = 0; y < 1 << s->depth; y++) {
179  sum += s->histogram[y] * y;
180  }
181 
182  return 1.0f * sum / (s->planeheight[0] * s->planewidth[0]);
183 }
184 
186 {
187  DeflickerContext *s = ctx->priv;
188  const uint16_t *src = (const uint16_t *)in->data[0];
189  int64_t sum = 0;
190  int y, x;
191 
192  memset(s->histogram, 0, (1 << s->depth) * sizeof(*s->histogram));
193 
194  for (y = 0; y < s->planeheight[0]; y++) {
195  for (x = 0; x < s->planewidth[0]; x++) {
196  s->histogram[src[x]]++;
197  }
198  src += in->linesize[0] / 2;
199  }
200 
201  for (y = 0; y < 1 << s->depth; y++) {
202  sum += s->histogram[y] * y;
203  }
204 
205  return 1.0f * sum / (s->planeheight[0] * s->planewidth[0]);
206 }
207 
208 static void get_am_factor(AVFilterContext *ctx, float *f)
209 {
210  DeflickerContext *s = ctx->priv;
211  int y;
212 
213  *f = 0.0f;
214 
215  for (y = 0; y < s->size; y++) {
216  *f += s->luminance[y];
217  }
218 
219  *f /= s->size;
220  *f /= s->luminance[0];
221 }
222 
223 static void get_gm_factor(AVFilterContext *ctx, float *f)
224 {
225  DeflickerContext *s = ctx->priv;
226  int y;
227 
228  *f = 1;
229 
230  for (y = 0; y < s->size; y++) {
231  *f *= s->luminance[y];
232  }
233 
234  *f = pow(*f, 1.0f / s->size);
235  *f /= s->luminance[0];
236 }
237 
238 static void get_hm_factor(AVFilterContext *ctx, float *f)
239 {
240  DeflickerContext *s = ctx->priv;
241  int y;
242 
243  *f = 0.0f;
244 
245  for (y = 0; y < s->size; y++) {
246  *f += 1.0f / s->luminance[y];
247  }
248 
249  *f = s->size / *f;
250  *f /= s->luminance[0];
251 }
252 
253 static void get_qm_factor(AVFilterContext *ctx, float *f)
254 {
255  DeflickerContext *s = ctx->priv;
256  int y;
257 
258  *f = 0.0f;
259 
260  for (y = 0; y < s->size; y++) {
261  *f += s->luminance[y] * s->luminance[y];
262  }
263 
264  *f /= s->size;
265  *f = sqrtf(*f);
266  *f /= s->luminance[0];
267 }
268 
269 static void get_cm_factor(AVFilterContext *ctx, float *f)
270 {
271  DeflickerContext *s = ctx->priv;
272  int y;
273 
274  *f = 0.0f;
275 
276  for (y = 0; y < s->size; y++) {
277  *f += s->luminance[y] * s->luminance[y] * s->luminance[y];
278  }
279 
280  *f /= s->size;
281  *f = cbrtf(*f);
282  *f /= s->luminance[0];
283 }
284 
285 static void get_pm_factor(AVFilterContext *ctx, float *f)
286 {
287  DeflickerContext *s = ctx->priv;
288  int y;
289 
290  *f = 0.0f;
291 
292  for (y = 0; y < s->size; y++) {
293  *f += powf(s->luminance[y], s->size);
294  }
295 
296  *f /= s->size;
297  *f = powf(*f, 1.0f / s->size);
298  *f /= s->luminance[0];
299 }
300 
301 static int comparef(const void *a, const void *b)
302 {
303  const float *aa = a, *bb = b;
304  return round(aa - bb);
305 }
306 
307 static void get_median_factor(AVFilterContext *ctx, float *f)
308 {
309  DeflickerContext *s = ctx->priv;
310 
311  memcpy(s->sorted, s->luminance, sizeof(s->sorted));
312  AV_QSORT(s->sorted, s->size, float, comparef);
313 
314  *f = s->sorted[s->size >> 1] / s->luminance[0];
315 }
316 
318 {
320  AVFilterContext *ctx = inlink->dst;
321  DeflickerContext *s = ctx->priv;
322 
323  s->nb_planes = desc->nb_components;
324 
325  s->planeheight[1] = s->planeheight[2] = AV_CEIL_RSHIFT(inlink->h, desc->log2_chroma_h);
326  s->planeheight[0] = s->planeheight[3] = inlink->h;
327  s->planewidth[1] = s->planewidth[2] = AV_CEIL_RSHIFT(inlink->w, desc->log2_chroma_w);
328  s->planewidth[0] = s->planewidth[3] = inlink->w;
329 
330  s->depth = desc->comp[0].depth;
331  if (s->depth == 8) {
332  s->deflicker = deflicker8;
333  s->calc_avgy = calc_avgy8;
334  } else {
335  s->deflicker = deflicker16;
336  s->calc_avgy = calc_avgy16;
337  }
338 
339  s->histogram = av_calloc(1 << s->depth, sizeof(*s->histogram));
340  if (!s->histogram)
341  return AVERROR(ENOMEM);
342 
343  switch (s->mode) {
344  case MEDIAN: s->get_factor = get_median_factor; break;
345  case ARITHMETIC_MEAN: s->get_factor = get_am_factor; break;
346  case GEOMETRIC_MEAN: s->get_factor = get_gm_factor; break;
347  case HARMONIC_MEAN: s->get_factor = get_hm_factor; break;
348  case QUADRATIC_MEAN: s->get_factor = get_qm_factor; break;
349  case CUBIC_MEAN: s->get_factor = get_cm_factor; break;
350  case POWER_MEAN: s->get_factor = get_pm_factor; break;
351  }
352 
353  return 0;
354 }
355 
357 {
358  AVFilterContext *ctx = inlink->dst;
359  AVFilterLink *outlink = ctx->outputs[0];
360  DeflickerContext *s = ctx->priv;
361  AVDictionary **metadata;
362  AVFrame *out, *in;
363  float f;
364  int y;
365 
366  if (s->q.available < s->size && !s->eof) {
367  s->luminance[s->available] = s->calc_avgy(ctx, buf);
368  ff_bufqueue_add(ctx, &s->q, buf);
369  s->available++;
370  return 0;
371  }
372 
373  in = ff_bufqueue_peek(&s->q, 0);
374 
375  out = ff_get_video_buffer(outlink, outlink->w, outlink->h);
376  if (!out) {
377  av_frame_free(&buf);
378  return AVERROR(ENOMEM);
379  }
380 
381  s->get_factor(ctx, &f);
382  if (!s->bypass)
383  s->deflicker(ctx, in->data[0], in->linesize[0], out->data[0], out->linesize[0],
384  outlink->w, outlink->h, f);
385  for (y = 1 - s->bypass; y < s->nb_planes; y++) {
386  av_image_copy_plane(out->data[y], out->linesize[y],
387  in->data[y], in->linesize[y],
388  s->planewidth[y] * (1 + (s->depth > 8)), s->planeheight[y]);
389  }
390 
391  av_frame_copy_props(out, in);
392  metadata = &out->metadata;
393  if (metadata) {
394  uint8_t value[128];
395 
396  snprintf(value, sizeof(value), "%f", s->luminance[0]);
397  av_dict_set(metadata, "lavfi.deflicker.luminance", value, 0);
398 
399  snprintf(value, sizeof(value), "%f", s->luminance[0] * f);
400  av_dict_set(metadata, "lavfi.deflicker.new_luminance", value, 0);
401 
402  snprintf(value, sizeof(value), "%f", f - 1.0f);
403  av_dict_set(metadata, "lavfi.deflicker.relative_change", value, 0);
404  }
405 
406  in = ff_bufqueue_get(&s->q);
407  av_frame_free(&in);
408  memmove(&s->luminance[0], &s->luminance[1], sizeof(*s->luminance) * (s->size - 1));
409  s->luminance[s->available - 1] = s->calc_avgy(ctx, buf);
410  ff_bufqueue_add(ctx, &s->q, buf);
411 
412  return ff_filter_frame(outlink, out);
413 }
414 
415 static int request_frame(AVFilterLink *outlink)
416 {
417  AVFilterContext *ctx = outlink->src;
418  DeflickerContext *s = ctx->priv;
419  int ret;
420 
421  ret = ff_request_frame(ctx->inputs[0]);
422  if (ret == AVERROR_EOF && s->available > 0) {
423  AVFrame *buf = av_frame_clone(ff_bufqueue_peek(&s->q, s->size - 1));
424  if (!buf)
425  return AVERROR(ENOMEM);
426 
427  s->eof = 1;
428  ret = filter_frame(ctx->inputs[0], buf);
429  s->available--;
430  }
431 
432  return ret;
433 }
434 
436 {
437  DeflickerContext *s = ctx->priv;
438 
440  av_freep(&s->histogram);
441 }
442 
443 static const AVFilterPad inputs[] = {
444  {
445  .name = "default",
446  .type = AVMEDIA_TYPE_VIDEO,
447  .filter_frame = filter_frame,
448  .config_props = config_input,
449  },
450  { NULL }
451 };
452 
453 static const AVFilterPad outputs[] = {
454  {
455  .name = "default",
456  .type = AVMEDIA_TYPE_VIDEO,
457  .request_frame = request_frame,
458  },
459  { NULL }
460 };
461 
463  .name = "deflicker",
464  .description = NULL_IF_CONFIG_SMALL("Remove temporal frame luminance variations."),
465  .priv_size = sizeof(DeflickerContext),
466  .priv_class = &deflicker_class,
467  .uninit = uninit,
469  .inputs = inputs,
470  .outputs = outputs,
471 };
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:301
#define AV_PIX_FMT_YUV440P10
Definition: pixfmt.h:389
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:238
AVOption.
Definition: opt.h:246
#define AV_PIX_FMT_YUV444P14
Definition: pixfmt.h:397
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:208
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:1080
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:285
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
A filter pad used for either input or output.
Definition: internal.h:54
#define SIZE
Definition: vf_deflicker.c:34
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:139
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:568
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:415
void * priv
private data for use by the filter
Definition: avfilter.h:353
static float calc_avgy8(AVFilterContext *ctx, AVFrame *in)
Definition: vf_deflicker.c:162
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:435
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:453
#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
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
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:307
#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:443
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:356
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:317
#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:185
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:120
float sorted[SIZE]
Definition: vf_deflicker.c:62
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:253
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:462
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:269
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:223
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_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