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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 
92 AVFILTER_DEFINE_CLASS(deflicker);
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 
317 static int config_input(AVFilterLink *inlink)
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 
356 static int filter_frame(AVFilterLink *inlink, AVFrame *buf)
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
const char * s
Definition: avisynth_c.h:768
#define AV_PIX_FMT_YUV440P10
Definition: pixfmt.h:370
const AVPixFmtDescriptor * av_pix_fmt_desc_get(enum AVPixelFormat pix_fmt)
Definition: pixdesc.c:2363
This structure describes decoded (raw) audio or video data.
Definition: frame.h:218
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:378
planar YUV 4:4:4, 24bpp, (1 Cr & Cb sample per 1x1 Y samples)
Definition: pixfmt.h:67
misc image utilities
Main libavfilter public API header.
const char * desc
Definition: nvenc.c:65
static void get_am_factor(AVFilterContext *ctx, float *f)
Definition: vf_deflicker.c:208
const char * b
Definition: vf_curves.c:113
#define AV_PIX_FMT_GRAY9
Definition: pixfmt.h:349
#define AV_PIX_FMT_YUV420P12
Definition: pixfmt.h:372
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
float(* calc_avgy)(AVFilterContext *ctx, AVFrame *in)
Definition: vf_deflicker.c:68
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
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:350
const char * name
Pad name.
Definition: internal.h:60
#define AV_PIX_FMT_GRAY12
Definition: pixfmt.h:351
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.
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:96
planar YUV 4:2:2, 16bpp, full scale (JPEG), deprecated in favor of AV_PIX_FMT_YUV422P and setting col...
Definition: pixfmt.h:75
#define AVERROR_EOF
End of file.
Definition: error.h:55
AVDictionary * metadata
metadata.
Definition: frame.h:505
#define AV_PIX_FMT_YUV444P16
Definition: pixfmt.h:381
ptrdiff_t size
Definition: opengl_enc.c:101
#define AV_PIX_FMT_YUV422P12
Definition: pixfmt.h:373
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
#define AVERROR(e)
Definition: error.h:43
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:371
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:66
#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:366
uint8_t nb_components
The number of components each pixel has, (1-4)
Definition: pixdesc.h:83
#define AV_PIX_FMT_GRAY16
Definition: pixfmt.h:352
planar YUV 4:2:0, 12bpp, full scale (JPEG), deprecated in favor of AV_PIX_FMT_YUV420P and setting col...
Definition: pixfmt.h:74
uint8_t w
Definition: llviddspenc.c:38
typedef void(APIENTRY *FF_PFNGLACTIVETEXTUREPROC)(GLenum texture)
GLsizei GLboolean const GLfloat * value
Definition: opengl_enc.c:109
AVFormatContext * ctx
Definition: movenc.c:48
uint64_t * histogram
Definition: vf_deflicker.c:60
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:367
AVFrame * av_frame_clone(const AVFrame *src)
Create a new frame that references the same data as src.
Definition: frame.c:538
static int query_formats(AVFilterContext *ctx)
Definition: vf_deflicker.c:94
#define AV_PIX_FMT_YUV420P16
Definition: pixfmt.h:379
void(* get_factor)(AVFilterContext *ctx, float *f)
Definition: vf_deflicker.c:67
static void get_median_factor(AVFilterContext *ctx, float *f)
Definition: vf_deflicker.c:307
#define AV_PIX_FMT_YUV420P14
Definition: pixfmt.h:376
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:249
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
uint8_t pi<< 24) CONV_FUNC_GROUP(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_U8, uint8_t,(*(constuint8_t *) pi-0x80)*(1.0f/(1<< 7))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_U8, uint8_t,(*(constuint8_t *) pi-0x80)*(1.0/(1<< 7))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_S16, int16_t,(*(constint16_t *) pi >>8)+0x80) CONV_FUNC_GROUP(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_S16, int16_t,*(constint16_t *) pi *(1.0f/(1<< 15))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_S16, int16_t,*(constint16_t *) pi *(1.0/(1<< 15))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_S32, int32_t,(*(constint32_t *) pi >>24)+0x80) CONV_FUNC_GROUP(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_S32, int32_t,*(constint32_t *) pi *(1.0f/(1U<< 31))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_S32, int32_t,*(constint32_t *) pi *(1.0/(1U<< 31))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_FLT, float, av_clip_uint8(lrintf(*(constfloat *) pi *(1<< 7))+0x80)) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S16, int16_t, AV_SAMPLE_FMT_FLT, float, av_clip_int16(lrintf(*(constfloat *) pi *(1<< 15)))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_FLT, float, av_clipl_int32(llrintf(*(constfloat *) pi *(1U<< 31)))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_DBL, double, av_clip_uint8(lrint(*(constdouble *) pi *(1<< 7))+0x80)) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S16, int16_t, AV_SAMPLE_FMT_DBL, double, av_clip_int16(lrint(*(constdouble *) pi *(1<< 15)))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_DBL, double, av_clipl_int32(llrint(*(constdouble *) pi *(1U<< 31))))#defineSET_CONV_FUNC_GROUP(ofmt, ifmt) staticvoidset_generic_function(AudioConvert *ac){}voidff_audio_convert_free(AudioConvert **ac){if(!*ac) return;ff_dither_free(&(*ac) ->dc);av_freep(ac);}AudioConvert *ff_audio_convert_alloc(AVAudioResampleContext *avr, enumAVSampleFormatout_fmt, enumAVSampleFormatin_fmt, intchannels, intsample_rate, intapply_map){AudioConvert *ac;intin_planar, out_planar;ac=av_mallocz(sizeof(*ac));if(!ac) returnNULL;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);returnNULL;}returnac;}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;}elseif(in_planar) ac->func_type=CONV_FUNC_TYPE_INTERLEAVE;elseac->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);returnac;}intff_audio_convert(AudioConvert *ac, AudioData *out, AudioData *in){intuse_generic=1;intlen=in->nb_samples;intp;if(ac->dc){av_log(ac->avr, AV_LOG_TRACE,"%dsamples-audio_convert:%sto%s(dithered)\n", len, av_get_sample_fmt_name(ac->in_fmt), av_get_sample_fmt_name(ac->out_fmt));returnff_convert_dither(ac-> in
void * buf
Definition: avisynth_c.h:690
static av_always_inline float cbrtf(float x)
Definition: libm.h:61
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
#define AV_PIX_FMT_YUV420P10
Definition: pixfmt.h:368
planar YUV 4:1:0, 9bpp, (1 Cr & Cb sample per 4x4 Y samples)
Definition: pixfmt.h:68
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:374
#define AV_PIX_FMT_YUV420P9
Definition: pixfmt.h:365
#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:377
#define AV_PIX_FMT_YUV422P10
Definition: pixfmt.h:369
#define AV_PIX_FMT_YUV444P12
Definition: pixfmt.h:375
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
Definition: frame.h:232
smooth_mode
Definition: vf_deflicker.c:36
int
planar YUV 4:2:0, 12bpp, (1 Cr & Cb sample per 2x2 Y samples)
Definition: pixfmt.h:62
Y , 8bpp.
Definition: pixfmt.h:70
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:76
planar YUV 4:1:1, 12bpp, (1 Cr & Cb sample per 4x1 Y samples)
Definition: pixfmt.h:69
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:254
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:95
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
int depth
Number of bits in the component.
Definition: pixdesc.h:58
AVPixelFormat
Pixel format.
Definition: pixfmt.h:60
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'ed).
Definition: ebur128.h:83
#define AV_PIX_FMT_YUV422P16
Definition: pixfmt.h:380
#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:652
#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