FFmpeg  4.4
vf_fade.c
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1 /*
2  * Copyright (c) 2010 Brandon Mintern
3  * Copyright (c) 2007 Bobby Bingham
4  *
5  * This file is part of FFmpeg.
6  *
7  * FFmpeg is free software; you can redistribute it and/or
8  * modify it under the terms of the GNU Lesser General Public
9  * License as published by the Free Software Foundation; either
10  * version 2.1 of the License, or (at your option) any later version.
11  *
12  * FFmpeg is distributed in the hope that it will be useful,
13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15  * Lesser General Public License for more details.
16  *
17  * You should have received a copy of the GNU Lesser General Public
18  * License along with FFmpeg; if not, write to the Free Software
19  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20  */
21 
22 /**
23  * @file
24  * video fade filter
25  * based heavily on vf_negate.c by Bobby Bingham
26  */
27 
28 #include "libavutil/avassert.h"
29 #include "libavutil/avstring.h"
30 #include "libavutil/common.h"
31 #include "libavutil/eval.h"
32 #include "libavutil/opt.h"
33 #include "libavutil/pixdesc.h"
34 #include "avfilter.h"
35 #include "drawutils.h"
36 #include "formats.h"
37 #include "internal.h"
38 #include "video.h"
39 
40 #define R 0
41 #define G 1
42 #define B 2
43 #define A 3
44 
45 #define Y 0
46 #define U 1
47 #define V 2
48 
49 #define FADE_IN 0
50 #define FADE_OUT 1
51 
52 typedef struct FadeContext {
53  const AVClass *class;
54  int type;
57  int hsub, vsub, bpp, depth;
62  int alpha;
63  int is_planar;
64  uint64_t start_time, duration;
67  uint8_t color_rgba[4]; ///< fade color
68  int black_fade; ///< if color_rgba is black
69  int (*filter_slice_luma)(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs);
70  int (*filter_slice_chroma)(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs);
71  int (*filter_slice_alpha)(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs);
72 } FadeContext;
73 
75 {
76  FadeContext *s = ctx->priv;
77 
78  s->fade_per_frame = (1 << 16) / s->nb_frames;
79  s->fade_state = VF_FADE_WAITING;
80 
81  if (s->duration != 0) {
82  // If duration (seconds) is non-zero, assume that we are not fading based on frames
83  s->nb_frames = 0; // Mostly to clean up logging
84  }
85 
86  // Choose what to log. If both time-based and frame-based options, both lines will be in the log
87  if (s->start_frame || s->nb_frames) {
89  "type:%s start_frame:%d nb_frames:%d alpha:%d\n",
90  s->type == FADE_IN ? "in" : "out", s->start_frame,
91  s->nb_frames,s->alpha);
92  }
93  if (s->start_time || s->duration) {
95  "type:%s start_time:%f duration:%f alpha:%d\n",
96  s->type == FADE_IN ? "in" : "out", (s->start_time / (double)AV_TIME_BASE),
97  (s->duration / (double)AV_TIME_BASE),s->alpha);
98  }
99 
100  s->black_fade = !memcmp(s->color_rgba, "\x00\x00\x00\xff", 4);
101  return 0;
102 }
103 
105 {
106  const FadeContext *s = ctx->priv;
107  static const enum AVPixelFormat pix_fmts[] = {
127  };
128  static const enum AVPixelFormat pix_fmts_rgb[] = {
134  };
135  static const enum AVPixelFormat pix_fmts_alpha[] = {
145  };
146  static const enum AVPixelFormat pix_fmts_rgba[] = {
151  };
152  AVFilterFormats *fmts_list;
153 
154  if (s->alpha) {
155  if (s->black_fade)
156  fmts_list = ff_make_format_list(pix_fmts_alpha);
157  else
158  fmts_list = ff_make_format_list(pix_fmts_rgba);
159  } else {
160  if (s->black_fade)
161  fmts_list = ff_make_format_list(pix_fmts);
162  else
163  fmts_list = ff_make_format_list(pix_fmts_rgb);
164  }
165  if (!fmts_list)
166  return AVERROR(ENOMEM);
167  return ff_set_common_formats(ctx, fmts_list);
168 }
169 
170 const static enum AVPixelFormat studio_level_pix_fmts[] = {
184 };
185 
187  int slice_start, int slice_end,
188  int do_alpha, int step)
189 {
190  int i, j;
191  const uint8_t r_idx = s->rgba_map[R];
192  const uint8_t g_idx = s->rgba_map[G];
193  const uint8_t b_idx = s->rgba_map[B];
194  const uint8_t a_idx = s->rgba_map[A];
195  const uint8_t *c = s->color_rgba;
196 
197  for (i = slice_start; i < slice_end; i++) {
198  uint8_t *p = frame->data[0] + i * frame->linesize[0];
199  for (j = 0; j < frame->width; j++) {
200 #define INTERP(c_name, c_idx) av_clip_uint8(((c[c_idx]<<16) + ((int)p[c_name] - (int)c[c_idx]) * s->factor + (1<<15)) >> 16)
201  p[r_idx] = INTERP(r_idx, 0);
202  p[g_idx] = INTERP(g_idx, 1);
203  p[b_idx] = INTERP(b_idx, 2);
204  if (do_alpha)
205  p[a_idx] = INTERP(a_idx, 3);
206  p += step;
207  }
208  }
209 }
210 
212  int slice_start, int slice_end,
213  int do_alpha)
214 {
215  int i, j;
216  const uint8_t *c = s->color_rgba;
217 
218  for (i = slice_start; i < slice_end; i++) {
219  uint8_t *pg = frame->data[0] + i * frame->linesize[0];
220  uint8_t *pb = frame->data[1] + i * frame->linesize[1];
221  uint8_t *pr = frame->data[2] + i * frame->linesize[2];
222  uint8_t *pa = frame->data[3] + i * frame->linesize[3];
223  for (j = 0; j < frame->width; j++) {
224 #define INTERPP(c_name, c_idx) av_clip_uint8(((c[c_idx]<<16) + ((int)c_name - (int)c[c_idx]) * s->factor + (1<<15)) >> 16)
225  pr[j] = INTERPP(pr[j], 0);
226  pg[j] = INTERPP(pg[j], 1);
227  pb[j] = INTERPP(pb[j], 2);
228  if (do_alpha)
229  pa[j] = INTERPP(pa[j], 3);
230  }
231  }
232 }
233 
234 static int filter_slice_rgb(AVFilterContext *ctx, void *arg, int jobnr,
235  int nb_jobs)
236 {
237  FadeContext *s = ctx->priv;
238  AVFrame *frame = arg;
239  int slice_start = (frame->height * jobnr ) / nb_jobs;
240  int slice_end = (frame->height * (jobnr+1)) / nb_jobs;
241 
242  if (s->is_planar && s->alpha)
243  filter_rgb_planar(s, frame, slice_start, slice_end, 1);
244  else if (s->is_planar)
245  filter_rgb_planar(s, frame, slice_start, slice_end, 0);
246  else if (s->alpha) filter_rgb(s, frame, slice_start, slice_end, 1, 4);
247  else if (s->bpp == 3) filter_rgb(s, frame, slice_start, slice_end, 0, 3);
248  else if (s->bpp == 4) filter_rgb(s, frame, slice_start, slice_end, 0, 4);
249  else av_assert0(0);
250 
251  return 0;
252 }
253 
254 static int filter_slice_luma(AVFilterContext *ctx, void *arg, int jobnr,
255  int nb_jobs)
256 {
257  FadeContext *s = ctx->priv;
258  AVFrame *frame = arg;
259  int slice_start = (frame->height * jobnr ) / nb_jobs;
260  int slice_end = (frame->height * (jobnr+1)) / nb_jobs;
261  int i, j;
262 
263  for (int k = 0; k < 1 + 2 * (s->is_planar && s->is_rgb); k++) {
264  for (i = slice_start; i < slice_end; i++) {
265  uint8_t *p = frame->data[k] + i * frame->linesize[k];
266  for (j = 0; j < frame->width * s->bpp; j++) {
267  /* s->factor is using 16 lower-order bits for decimal
268  * places. 32768 = 1 << 15, it is an integer representation
269  * of 0.5 and is for rounding. */
270  *p = ((*p - s->black_level) * s->factor + s->black_level_scaled) >> 16;
271  p++;
272  }
273  }
274  }
275 
276  return 0;
277 }
278 
279 static int filter_slice_luma16(AVFilterContext *ctx, void *arg, int jobnr,
280  int nb_jobs)
281 {
282  FadeContext *s = ctx->priv;
283  AVFrame *frame = arg;
284  int slice_start = (frame->height * jobnr ) / nb_jobs;
285  int slice_end = (frame->height * (jobnr+1)) / nb_jobs;
286  int i, j;
287 
288  for (int k = 0; k < 1 + 2 * (s->is_planar && s->is_rgb); k++) {
289  for (i = slice_start; i < slice_end; i++) {
290  uint16_t *p = (uint16_t *)(frame->data[k] + i * frame->linesize[k]);
291  for (j = 0; j < frame->width * s->bpp; j++) {
292  /* s->factor is using 16 lower-order bits for decimal
293  * places. 32768 = 1 << 15, it is an integer representation
294  * of 0.5 and is for rounding. */
295  *p = ((*p - s->black_level) * s->factor + s->black_level_scaled) >> 16;
296  p++;
297  }
298  }
299  }
300 
301  return 0;
302 }
303 
304 static int filter_slice_chroma(AVFilterContext *ctx, void *arg, int jobnr,
305  int nb_jobs)
306 {
307  FadeContext *s = ctx->priv;
308  AVFrame *frame = arg;
309  int i, j, plane;
310  const int width = AV_CEIL_RSHIFT(frame->width, s->hsub);
311  const int height= AV_CEIL_RSHIFT(frame->height, s->vsub);
312  int slice_start = (height * jobnr ) / nb_jobs;
313  int slice_end = FFMIN(((height * (jobnr+1)) / nb_jobs), frame->height);
314 
315  for (plane = 1; plane < 3; plane++) {
316  for (i = slice_start; i < slice_end; i++) {
317  uint8_t *p = frame->data[plane] + i * frame->linesize[plane];
318  for (j = 0; j < width; j++) {
319  /* 8421367 = ((128 << 1) + 1) << 15. It is an integer
320  * representation of 128.5. The .5 is for rounding
321  * purposes. */
322  *p = ((*p - 128) * s->factor + 8421367) >> 16;
323  p++;
324  }
325  }
326  }
327 
328  return 0;
329 }
330 
331 static int filter_slice_chroma16(AVFilterContext *ctx, void *arg, int jobnr,
332  int nb_jobs)
333 {
334  FadeContext *s = ctx->priv;
335  AVFrame *frame = arg;
336  int i, j, plane;
337  const int width = AV_CEIL_RSHIFT(frame->width, s->hsub);
338  const int height= AV_CEIL_RSHIFT(frame->height, s->vsub);
339  const int mid = 1 << (s->depth - 1);
340  const int add = ((mid << 1) + 1) << 15;
341  int slice_start = (height * jobnr ) / nb_jobs;
342  int slice_end = FFMIN(((height * (jobnr+1)) / nb_jobs), frame->height);
343 
344  for (plane = 1; plane < 3; plane++) {
345  for (i = slice_start; i < slice_end; i++) {
346  uint16_t *p = (uint16_t *)(frame->data[plane] + i * frame->linesize[plane]);
347  for (j = 0; j < width; j++) {
348  *p = ((*p - mid) * s->factor + add) >> 16;
349  p++;
350  }
351  }
352  }
353 
354  return 0;
355 }
356 
357 static int filter_slice_alpha(AVFilterContext *ctx, void *arg, int jobnr,
358  int nb_jobs)
359 {
360  FadeContext *s = ctx->priv;
361  AVFrame *frame = arg;
362  int plane = s->is_packed_rgb ? 0 : A;
363  int slice_start = (frame->height * jobnr ) / nb_jobs;
364  int slice_end = (frame->height * (jobnr+1)) / nb_jobs;
365  int i, j;
366 
367  for (i = slice_start; i < slice_end; i++) {
368  uint8_t *p = frame->data[plane] + i * frame->linesize[plane] + s->is_packed_rgb*s->rgba_map[A];
369  int step = s->is_packed_rgb ? 4 : 1;
370  for (j = 0; j < frame->width; j++) {
371  /* s->factor is using 16 lower-order bits for decimal
372  * places. 32768 = 1 << 15, it is an integer representation
373  * of 0.5 and is for rounding. */
374  *p = ((*p - s->black_level) * s->factor + s->black_level_scaled) >> 16;
375  p += step;
376  }
377  }
378 
379  return 0;
380 }
381 
382 static int filter_slice_alpha16(AVFilterContext *ctx, void *arg, int jobnr,
383  int nb_jobs)
384 {
385  FadeContext *s = ctx->priv;
386  AVFrame *frame = arg;
387  int plane = s->is_packed_rgb ? 0 : A;
388  int slice_start = (frame->height * jobnr ) / nb_jobs;
389  int slice_end = (frame->height * (jobnr+1)) / nb_jobs;
390  int i, j;
391 
392  for (i = slice_start; i < slice_end; i++) {
393  uint16_t *p = (uint16_t *)(frame->data[plane] + i * frame->linesize[plane]) + s->is_packed_rgb*s->rgba_map[A];
394  int step = s->is_packed_rgb ? 4 : 1;
395  for (j = 0; j < frame->width; j++) {
396  /* s->factor is using 16 lower-order bits for decimal
397  * places. 32768 = 1 << 15, it is an integer representation
398  * of 0.5 and is for rounding. */
399  *p = ((*p - s->black_level) * s->factor + s->black_level_scaled) >> 16;
400  p += step;
401  }
402  }
403 
404  return 0;
405 }
406 
407 static int config_input(AVFilterLink *inlink)
408 {
409  FadeContext *s = inlink->dst->priv;
410  const AVPixFmtDescriptor *pixdesc = av_pix_fmt_desc_get(inlink->format);
411 
412  s->hsub = pixdesc->log2_chroma_w;
413  s->vsub = pixdesc->log2_chroma_h;
414 
415  ff_fill_rgba_map(s->rgba_map, inlink->format);
416 
417  s->depth = pixdesc->comp[0].depth;
418  s->bpp = pixdesc->flags & AV_PIX_FMT_FLAG_PLANAR ?
419  1 :
420  av_get_bits_per_pixel(pixdesc) >> 3;
421  s->alpha &= !!(pixdesc->flags & AV_PIX_FMT_FLAG_ALPHA);
422  s->is_planar = pixdesc->flags & AV_PIX_FMT_FLAG_PLANAR;
423  s->is_rgb = pixdesc->flags & AV_PIX_FMT_FLAG_RGB;
424  s->is_packed_rgb = !s->is_planar && s->is_rgb;
425 
426  if (s->duration)
427  s->duration_pts = av_rescale_q(s->duration, AV_TIME_BASE_Q, inlink->time_base);
428  if (s->start_time)
429  s->start_time_pts = av_rescale_q(s->start_time, AV_TIME_BASE_Q, inlink->time_base);
430 
431  /* use CCIR601/709 black level for studio-level pixel non-alpha components */
432  s->black_level =
433  ff_fmt_is_in(inlink->format, studio_level_pix_fmts) && !s->alpha ? 16 * (1 << (s->depth - 8)): 0;
434  /* 32768 = 1 << 15, it is an integer representation
435  * of 0.5 and is for rounding. */
436  s->black_level_scaled = (s->black_level << 16) + 32768;
437 
438  s->filter_slice_luma = s->depth <= 8 ? filter_slice_luma : filter_slice_luma16;
439  s->filter_slice_chroma = s->depth <= 8 ? filter_slice_chroma : filter_slice_chroma16;
440  s->filter_slice_alpha = s->depth <= 8 ? filter_slice_alpha : filter_slice_alpha16;
441 
442  return 0;
443 }
444 
445 static int filter_frame(AVFilterLink *inlink, AVFrame *frame)
446 {
447  AVFilterContext *ctx = inlink->dst;
448  FadeContext *s = ctx->priv;
449 
450  // Calculate Fade assuming this is a Fade In
451  if (s->fade_state == VF_FADE_WAITING) {
452  s->factor=0;
453  if (frame->pts >= s->start_time_pts
454  && inlink->frame_count_out >= s->start_frame) {
455  // Time to start fading
456  s->fade_state = VF_FADE_FADING;
457 
458  // Save start time in case we are starting based on frames and fading based on time
459  if (s->start_time_pts == 0 && s->start_frame != 0) {
460  s->start_time_pts = frame->pts;
461  }
462 
463  // Save start frame in case we are starting based on time and fading based on frames
464  if (s->start_time_pts != 0 && s->start_frame == 0) {
465  s->start_frame = inlink->frame_count_out;
466  }
467  }
468  }
469  if (s->fade_state == VF_FADE_FADING) {
470  if (s->duration_pts == 0) {
471  // Fading based on frame count
472  s->factor = (inlink->frame_count_out - s->start_frame) * s->fade_per_frame;
473  if (inlink->frame_count_out > s->start_frame + s->nb_frames) {
474  s->fade_state = VF_FADE_DONE;
475  }
476 
477  } else {
478  // Fading based on duration
479  s->factor = (frame->pts - s->start_time_pts) * UINT16_MAX / s->duration_pts;
480  if (frame->pts > s->start_time_pts + s->duration_pts) {
481  s->fade_state = VF_FADE_DONE;
482  }
483  }
484  }
485  if (s->fade_state == VF_FADE_DONE) {
486  s->factor=UINT16_MAX;
487  }
488 
489  s->factor = av_clip_uint16(s->factor);
490 
491  // Invert fade_factor if Fading Out
492  if (s->type == FADE_OUT) {
493  s->factor=UINT16_MAX-s->factor;
494  }
495 
496  if (s->factor < UINT16_MAX) {
497  if (s->alpha) {
498  ctx->internal->execute(ctx, s->filter_slice_alpha, frame, NULL,
500  } else if (s->is_rgb && !s->black_fade) {
501  ctx->internal->execute(ctx, filter_slice_rgb, frame, NULL,
503  } else {
504  /* luma, or rgb plane in case of black */
505  ctx->internal->execute(ctx, s->filter_slice_luma, frame, NULL,
507 
508  if (frame->data[1] && frame->data[2] && !s->is_rgb) {
509  /* chroma planes */
510  ctx->internal->execute(ctx, s->filter_slice_chroma, frame, NULL,
512  }
513  }
514  }
515 
516  return ff_filter_frame(inlink->dst->outputs[0], frame);
517 }
518 
519 
520 #define OFFSET(x) offsetof(FadeContext, x)
521 #define FLAGS AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_FILTERING_PARAM
522 
523 static const AVOption fade_options[] = {
524  { "type", "set the fade direction", OFFSET(type), AV_OPT_TYPE_INT, { .i64 = FADE_IN }, FADE_IN, FADE_OUT, FLAGS, "type" },
525  { "t", "set the fade direction", OFFSET(type), AV_OPT_TYPE_INT, { .i64 = FADE_IN }, FADE_IN, FADE_OUT, FLAGS, "type" },
526  { "in", "fade-in", 0, AV_OPT_TYPE_CONST, { .i64 = FADE_IN }, .flags = FLAGS, .unit = "type" },
527  { "out", "fade-out", 0, AV_OPT_TYPE_CONST, { .i64 = FADE_OUT }, .flags = FLAGS, .unit = "type" },
528  { "start_frame", "Number of the first frame to which to apply the effect.",
529  OFFSET(start_frame), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, INT_MAX, FLAGS },
530  { "s", "Number of the first frame to which to apply the effect.",
531  OFFSET(start_frame), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, INT_MAX, FLAGS },
532  { "nb_frames", "Number of frames to which the effect should be applied.",
533  OFFSET(nb_frames), AV_OPT_TYPE_INT, { .i64 = 25 }, 1, INT_MAX, FLAGS },
534  { "n", "Number of frames to which the effect should be applied.",
535  OFFSET(nb_frames), AV_OPT_TYPE_INT, { .i64 = 25 }, 1, INT_MAX, FLAGS },
536  { "alpha", "fade alpha if it is available on the input", OFFSET(alpha), AV_OPT_TYPE_BOOL, {.i64 = 0 }, 0, 1, FLAGS },
537  { "start_time", "Number of seconds of the beginning of the effect.",
538  OFFSET(start_time), AV_OPT_TYPE_DURATION, {.i64 = 0. }, 0, INT64_MAX, FLAGS },
539  { "st", "Number of seconds of the beginning of the effect.",
540  OFFSET(start_time), AV_OPT_TYPE_DURATION, {.i64 = 0. }, 0, INT64_MAX, FLAGS },
541  { "duration", "Duration of the effect in seconds.",
542  OFFSET(duration), AV_OPT_TYPE_DURATION, {.i64 = 0. }, 0, INT64_MAX, FLAGS },
543  { "d", "Duration of the effect in seconds.",
544  OFFSET(duration), AV_OPT_TYPE_DURATION, {.i64 = 0. }, 0, INT64_MAX, FLAGS },
545  { "color", "set color", OFFSET(color_rgba), AV_OPT_TYPE_COLOR, {.str = "black"}, 0, 0, FLAGS },
546  { "c", "set color", OFFSET(color_rgba), AV_OPT_TYPE_COLOR, {.str = "black"}, 0, 0, FLAGS },
547  { NULL }
548 };
549 
551 
553  {
554  .name = "default",
555  .type = AVMEDIA_TYPE_VIDEO,
556  .config_props = config_input,
557  .filter_frame = filter_frame,
558  .needs_writable = 1,
559  },
560  { NULL }
561 };
562 
564  {
565  .name = "default",
566  .type = AVMEDIA_TYPE_VIDEO,
567  },
568  { NULL }
569 };
570 
572  .name = "fade",
573  .description = NULL_IF_CONFIG_SMALL("Fade in/out input video."),
574  .init = init,
575  .priv_size = sizeof(FadeContext),
576  .priv_class = &fade_class,
582 };
static const AVFilterPad inputs[]
Definition: af_acontrast.c:193
static const AVFilterPad outputs[]
Definition: af_acontrast.c:203
#define av_always_inline
Definition: attributes.h:45
#define av_cold
Definition: attributes.h:88
uint8_t
static enum AVPixelFormat pix_fmts_rgb[3]
Definition: av1_parser.c:48
simple assert() macros that are a bit more flexible than ISO C assert().
#define av_assert0(cond)
assert() equivalent, that is always enabled.
Definition: avassert.h:37
int ff_filter_frame(AVFilterLink *link, AVFrame *frame)
Send a frame of data to the next filter.
Definition: avfilter.c:1094
int ff_filter_get_nb_threads(AVFilterContext *ctx)
Get number of threads for current filter instance.
Definition: avfilter.c:802
Main libavfilter public API header.
#define flags(name, subs,...)
Definition: cbs_av1.c:561
#define s(width, name)
Definition: cbs_vp9.c:257
common internal and external API header
#define FFMIN(a, b)
Definition: common.h:105
#define AV_CEIL_RSHIFT(a, b)
Definition: common.h:58
#define av_clip_uint16
Definition: common.h:134
#define NULL
Definition: coverity.c:32
static AVFrame * frame
static float add(float src0, float src1)
int ff_fill_rgba_map(uint8_t *rgba_map, enum AVPixelFormat pix_fmt)
Definition: drawutils.c:35
misc drawing utilities
simple arithmetic expression evaluator
int
static int64_t start_time
Definition: ffplay.c:332
int ff_fmt_is_in(int fmt, const int *fmts)
Tell if an integer is contained in the provided -1-terminated list of integers.
Definition: formats.c:257
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:587
AVFilterFormats * ff_make_format_list(const int *fmts)
Create a list of supported formats.
Definition: formats.c:286
@ AV_OPT_TYPE_CONST
Definition: opt.h:234
@ AV_OPT_TYPE_DURATION
Definition: opt.h:239
@ AV_OPT_TYPE_INT
Definition: opt.h:225
@ AV_OPT_TYPE_BOOL
Definition: opt.h:242
@ AV_OPT_TYPE_COLOR
Definition: opt.h:240
#define AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC
Some filters support a generic "enable" expression option that can be used to enable or disable a fil...
Definition: avfilter.h:126
#define AVFILTER_FLAG_SLICE_THREADS
The filter supports multithreading by splitting frames into multiple parts and processing them concur...
Definition: avfilter.h:117
#define AVERROR(e)
Definition: error.h:43
#define AV_LOG_VERBOSE
Detailed information.
Definition: log.h:210
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
@ AVMEDIA_TYPE_VIDEO
Definition: avutil.h:201
#define AV_TIME_BASE
Internal time base represented as integer.
Definition: avutil.h:254
#define AV_TIME_BASE_Q
Internal time base represented as fractional value.
Definition: avutil.h:260
cl_device_type type
static const int16_t alpha[]
Definition: ilbcdata.h:55
int i
Definition: input.c:407
const char * arg
Definition: jacosubdec.c:66
common internal API header
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification.
Definition: internal.h:117
static enum AVPixelFormat pix_fmts[]
Definition: libkvazaar.c:303
static int slice_end(AVCodecContext *avctx, AVFrame *pict)
Handle slice ends.
Definition: mpeg12dec.c:2033
AVOptions.
int av_get_bits_per_pixel(const AVPixFmtDescriptor *pixdesc)
Return the number of bits per pixel used by the pixel format described by pixdesc.
Definition: pixdesc.c:2525
const AVPixFmtDescriptor * av_pix_fmt_desc_get(enum AVPixelFormat pix_fmt)
Definition: pixdesc.c:2573
#define AV_PIX_FMT_FLAG_ALPHA
The pixel format has an alpha channel.
Definition: pixdesc.h:179
#define AV_PIX_FMT_FLAG_RGB
The pixel format contains RGB-like data (as opposed to YUV/grayscale).
Definition: pixdesc.h:148
#define AV_PIX_FMT_FLAG_PLANAR
At least one pixel component is not in the first data plane.
Definition: pixdesc.h:144
#define AV_PIX_FMT_YUV420P16
Definition: pixfmt.h:410
#define AV_PIX_FMT_YUV444P12
Definition: pixfmt.h:406
#define AV_PIX_FMT_YUV444P9
Definition: pixfmt.h:398
#define AV_PIX_FMT_YUV420P10
Definition: pixfmt.h:399
#define AV_PIX_FMT_YUV440P12
Definition: pixfmt.h:405
#define AV_PIX_FMT_YUV422P9
Definition: pixfmt.h:397
#define AV_PIX_FMT_YUVA444P10
Definition: pixfmt.h:438
#define AV_PIX_FMT_YUVA420P16
Definition: pixfmt.h:441
#define AV_PIX_FMT_YUV420P12
Definition: pixfmt.h:403
#define AV_PIX_FMT_YUVA420P10
Definition: pixfmt.h:436
#define AV_PIX_FMT_YUVA422P9
Definition: pixfmt.h:434
#define AV_PIX_FMT_YUV422P12
Definition: pixfmt.h:404
#define AV_PIX_FMT_YUV422P10
Definition: pixfmt.h:400
#define AV_PIX_FMT_YUV420P9
Definition: pixfmt.h:396
#define AV_PIX_FMT_YUVA420P9
Definition: pixfmt.h:433
#define AV_PIX_FMT_YUVA422P10
Definition: pixfmt.h:437
#define AV_PIX_FMT_YUV420P14
Definition: pixfmt.h:407
AVPixelFormat
Pixel format.
Definition: pixfmt.h:64
@ AV_PIX_FMT_NONE
Definition: pixfmt.h:65
@ AV_PIX_FMT_RGB24
packed RGB 8:8:8, 24bpp, RGBRGB...
Definition: pixfmt.h:68
@ AV_PIX_FMT_YUV420P
planar YUV 4:2:0, 12bpp, (1 Cr & Cb sample per 2x2 Y samples)
Definition: pixfmt.h:66
@ AV_PIX_FMT_YUV440P
planar YUV 4:4:0 (1 Cr & Cb sample per 1x2 Y samples)
Definition: pixfmt.h:99
@ AV_PIX_FMT_YUV422P
planar YUV 4:2:2, 16bpp, (1 Cr & Cb sample per 2x1 Y samples)
Definition: pixfmt.h:70
@ AV_PIX_FMT_ARGB
packed ARGB 8:8:8:8, 32bpp, ARGBARGB...
Definition: pixfmt.h:92
@ AV_PIX_FMT_BGRA
packed BGRA 8:8:8:8, 32bpp, BGRABGRA...
Definition: pixfmt.h:95
@ AV_PIX_FMT_ABGR
packed ABGR 8:8:8:8, 32bpp, ABGRABGR...
Definition: pixfmt.h:94
@ AV_PIX_FMT_YUVA420P
planar YUV 4:2:0, 20bpp, (1 Cr & Cb sample per 2x2 Y & A samples)
Definition: pixfmt.h:101
@ AV_PIX_FMT_YUVJ440P
planar YUV 4:4:0 full scale (JPEG), deprecated in favor of AV_PIX_FMT_YUV440P and setting color_range
Definition: pixfmt.h:100
@ AV_PIX_FMT_YUV410P
planar YUV 4:1:0, 9bpp, (1 Cr & Cb sample per 4x4 Y samples)
Definition: pixfmt.h:72
@ AV_PIX_FMT_YUV411P
planar YUV 4:1:1, 12bpp, (1 Cr & Cb sample per 4x1 Y samples)
Definition: pixfmt.h:73
@ AV_PIX_FMT_RGBA
packed RGBA 8:8:8:8, 32bpp, RGBARGBA...
Definition: pixfmt.h:93
@ AV_PIX_FMT_YUV444P
planar YUV 4:4:4, 24bpp, (1 Cr & Cb sample per 1x1 Y samples)
Definition: pixfmt.h:71
@ AV_PIX_FMT_YUVA444P
planar YUV 4:4:4 32bpp, (1 Cr & Cb sample per 1x1 Y & A samples)
Definition: pixfmt.h:177
@ AV_PIX_FMT_GBRAP
planar GBRA 4:4:4:4 32bpp
Definition: pixfmt.h:215
@ AV_PIX_FMT_YUVJ422P
planar YUV 4:2:2, 16bpp, full scale (JPEG), deprecated in favor of AV_PIX_FMT_YUV422P and setting col...
Definition: pixfmt.h:79
@ AV_PIX_FMT_YUVA422P
planar YUV 4:2:2 24bpp, (1 Cr & Cb sample per 2x1 Y & A samples)
Definition: pixfmt.h:176
@ AV_PIX_FMT_BGR24
packed RGB 8:8:8, 24bpp, BGRBGR...
Definition: pixfmt.h:69
@ AV_PIX_FMT_GBRP
planar GBR 4:4:4 24bpp
Definition: pixfmt.h:168
@ AV_PIX_FMT_YUVJ444P
planar YUV 4:4:4, 24bpp, full scale (JPEG), deprecated in favor of AV_PIX_FMT_YUV444P and setting col...
Definition: pixfmt.h:80
@ AV_PIX_FMT_YUVJ420P
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_YUVA422P12
Definition: pixfmt.h:439
#define AV_PIX_FMT_YUV422P14
Definition: pixfmt.h:408
#define AV_PIX_FMT_YUV422P16
Definition: pixfmt.h:411
#define AV_PIX_FMT_YUVA444P16
Definition: pixfmt.h:443
#define AV_PIX_FMT_YUVA422P16
Definition: pixfmt.h:442
#define AV_PIX_FMT_YUV444P14
Definition: pixfmt.h:409
#define AV_PIX_FMT_YUVA444P9
Definition: pixfmt.h:435
#define AV_PIX_FMT_YUVA444P12
Definition: pixfmt.h:440
#define AV_PIX_FMT_YUV444P16
Definition: pixfmt.h:412
#define AV_PIX_FMT_YUV444P10
Definition: pixfmt.h:402
Describe the class of an AVClass context structure.
Definition: log.h:67
int depth
Number of bits in the component.
Definition: pixdesc.h:58
An instance of a filter.
Definition: avfilter.h:341
void * priv
private data for use by the filter
Definition: avfilter.h:356
AVFilterLink ** outputs
array of pointers to output links
Definition: avfilter.h:353
A list of supported formats for one end of a filter link.
Definition: formats.h:65
A filter pad used for either input or output.
Definition: internal.h:54
const char * name
Pad name.
Definition: internal.h:60
Filter definition.
Definition: avfilter.h:145
const char * name
Filter name.
Definition: avfilter.h:149
AVFormatInternal * internal
An opaque field for libavformat internal usage.
Definition: avformat.h:1699
This structure describes decoded (raw) audio or video data.
Definition: frame.h:318
int64_t pts
Presentation timestamp in time_base units (time when frame should be shown to user).
Definition: frame.h:411
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
Definition: frame.h:332
int width
Definition: frame.h:376
int height
Definition: frame.h:376
int linesize[AV_NUM_DATA_POINTERS]
For video, size in bytes of each picture line.
Definition: frame.h:349
AVOption.
Definition: opt.h:248
Descriptor that unambiguously describes how the bits of a pixel are stored in the up to 4 data planes...
Definition: pixdesc.h:81
AVComponentDescriptor comp[4]
Parameters that describe how pixels are packed.
Definition: pixdesc.h:117
uint8_t log2_chroma_w
Amount to shift the luma width right to find the chroma width.
Definition: pixdesc.h:92
uint64_t flags
Combination of AV_PIX_FMT_FLAG_...
Definition: pixdesc.h:106
uint8_t log2_chroma_h
Amount to shift the luma height right to find the chroma height.
Definition: pixdesc.h:101
uint64_t duration
Definition: vf_fade.c:64
int hsub
Definition: vf_fade.c:57
int start_frame
Definition: vf_fade.c:56
uint8_t rgba_map[4]
Definition: vf_fade.c:61
uint8_t is_rgb
Definition: vf_fade.c:59
unsigned int black_level_scaled
Definition: vf_fade.c:58
uint64_t duration_pts
Definition: vf_fade.c:65
int black_fade
if color_rgba is black
Definition: vf_fade.c:68
uint8_t is_packed_rgb
Definition: vf_fade.c:60
int type
Definition: vf_fade.c:54
uint64_t start_time_pts
Definition: vf_fade.c:65
int(* filter_slice_alpha)(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
Definition: vf_fade.c:71
int(* filter_slice_chroma)(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
Definition: vf_fade.c:70
uint64_t start_time
Definition: vf_fade.c:64
int vsub
Definition: vf_fade.c:57
int(* filter_slice_luma)(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
Definition: vf_fade.c:69
uint8_t color_rgba[4]
fade color
Definition: vf_fade.c:67
int bpp
Definition: vf_fade.c:57
enum FadeContext::@223 fade_state
int is_planar
Definition: vf_fade.c:63
unsigned int black_level
Definition: vf_fade.c:58
int depth
Definition: vf_fade.c:57
int nb_frames
Definition: vf_fade.c:56
int alpha
Definition: vf_fade.c:62
int factor
Definition: vf_fade.c:55
@ VF_FADE_FADING
Definition: vf_fade.c:66
@ VF_FADE_WAITING
Definition: vf_fade.c:66
@ VF_FADE_DONE
Definition: vf_fade.c:66
int fade_per_frame
Definition: vf_fade.c:55
#define av_log(a,...)
int64_t duration
Definition: movenc.c:64
AVFormatContext * ctx
Definition: movenc.c:48
#define height
#define width
#define B
Definition: vf_fade.c:42
#define FADE_IN
Definition: vf_fade.c:49
static const AVFilterPad avfilter_vf_fade_inputs[]
Definition: vf_fade.c:552
static int filter_slice_chroma(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
Definition: vf_fade.c:304
static int filter_slice_chroma16(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
Definition: vf_fade.c:331
static int filter_slice_rgb(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
Definition: vf_fade.c:234
static av_always_inline void filter_rgb_planar(FadeContext *s, const AVFrame *frame, int slice_start, int slice_end, int do_alpha)
Definition: vf_fade.c:211
static int query_formats(AVFilterContext *ctx)
Definition: vf_fade.c:104
#define R
Definition: vf_fade.c:40
static int config_input(AVFilterLink *inlink)
Definition: vf_fade.c:407
static int filter_frame(AVFilterLink *inlink, AVFrame *frame)
Definition: vf_fade.c:445
static const AVOption fade_options[]
Definition: vf_fade.c:523
#define FLAGS
Definition: vf_fade.c:521
AVFilter ff_vf_fade
Definition: vf_fade.c:571
#define A
Definition: vf_fade.c:43
static av_always_inline void filter_rgb(FadeContext *s, const AVFrame *frame, int slice_start, int slice_end, int do_alpha, int step)
Definition: vf_fade.c:186
#define INTERP(c_name, c_idx)
static av_cold int init(AVFilterContext *ctx)
Definition: vf_fade.c:74
static const enum AVPixelFormat studio_level_pix_fmts[]
Definition: vf_fade.c:170
static int filter_slice_alpha(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
Definition: vf_fade.c:357
static const AVFilterPad avfilter_vf_fade_outputs[]
Definition: vf_fade.c:563
static int filter_slice_alpha16(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
Definition: vf_fade.c:382
#define OFFSET(x)
Definition: vf_fade.c:520
static int filter_slice_luma(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
Definition: vf_fade.c:254
#define INTERPP(c_name, c_idx)
AVFILTER_DEFINE_CLASS(fade)
#define FADE_OUT
Definition: vf_fade.c:50
#define G
Definition: vf_fade.c:41
static int filter_slice_luma16(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
Definition: vf_fade.c:279
if(ret< 0)
Definition: vf_mcdeint.c:282
static void fade(uint8_t *dst, ptrdiff_t dst_linesize, const uint8_t *src, ptrdiff_t src_linesize, int width, int height, int alpha, int beta)
Definition: vp8.c:492
static double c[64]