FFmpeg
vf_framerate.c
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1 /*
2  * Copyright (C) 2012 Mark Himsley
3  *
4  * get_scene_score() Copyright (c) 2011 Stefano Sabatini
5  * taken from libavfilter/vf_select.c
6  *
7  * This file is part of FFmpeg.
8  *
9  * FFmpeg is free software; you can redistribute it and/or
10  * modify it under the terms of the GNU Lesser General Public
11  * License as published by the Free Software Foundation; either
12  * version 2.1 of the License, or (at your option) any later version.
13  *
14  * FFmpeg is distributed in the hope that it will be useful,
15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17  * Lesser General Public License for more details.
18  *
19  * You should have received a copy of the GNU Lesser General Public
20  * License along with FFmpeg; if not, write to the Free Software
21  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
22  */
23 
24 /**
25  * @file
26  * filter for upsampling or downsampling a progressive source
27  */
28 
29 #define DEBUG
30 
31 #include "libavutil/avassert.h"
32 #include "libavutil/imgutils.h"
33 #include "libavutil/internal.h"
34 #include "libavutil/opt.h"
35 #include "libavutil/pixdesc.h"
36 
37 #include "avfilter.h"
38 #include "internal.h"
39 #include "video.h"
40 #include "filters.h"
41 #include "framerate.h"
42 #include "scene_sad.h"
43 
44 #define OFFSET(x) offsetof(FrameRateContext, x)
45 #define V AV_OPT_FLAG_VIDEO_PARAM
46 #define F AV_OPT_FLAG_FILTERING_PARAM
47 #define FRAMERATE_FLAG_SCD 01
48 
49 static const AVOption framerate_options[] = {
50  {"fps", "required output frames per second rate", OFFSET(dest_frame_rate), AV_OPT_TYPE_VIDEO_RATE, {.str="50"}, 0, INT_MAX, V|F },
51 
52  {"interp_start", "point to start linear interpolation", OFFSET(interp_start), AV_OPT_TYPE_INT, {.i64=15}, 0, 255, V|F },
53  {"interp_end", "point to end linear interpolation", OFFSET(interp_end), AV_OPT_TYPE_INT, {.i64=240}, 0, 255, V|F },
54  {"scene", "scene change level", OFFSET(scene_score), AV_OPT_TYPE_DOUBLE, {.dbl=8.2}, 0, 100., V|F },
55 
56  {"flags", "set flags", OFFSET(flags), AV_OPT_TYPE_FLAGS, {.i64=1}, 0, INT_MAX, V|F, "flags" },
57  {"scene_change_detect", "enable scene change detection", 0, AV_OPT_TYPE_CONST, {.i64=FRAMERATE_FLAG_SCD}, INT_MIN, INT_MAX, V|F, "flags" },
58  {"scd", "enable scene change detection", 0, AV_OPT_TYPE_CONST, {.i64=FRAMERATE_FLAG_SCD}, INT_MIN, INT_MAX, V|F, "flags" },
59 
60  {NULL}
61 };
62 
64 
65 static double get_scene_score(AVFilterContext *ctx, AVFrame *crnt, AVFrame *next)
66 {
67  FrameRateContext *s = ctx->priv;
68  double ret = 0;
69 
70  ff_dlog(ctx, "get_scene_score()\n");
71 
72  if (crnt->height == next->height &&
73  crnt->width == next->width) {
74  uint64_t sad;
75  double mafd, diff;
76 
77  ff_dlog(ctx, "get_scene_score() process\n");
78  s->sad(crnt->data[0], crnt->linesize[0], next->data[0], next->linesize[0], crnt->width, crnt->height, &sad);
79  emms_c();
80  mafd = (double)sad * 100.0 / (crnt->width * crnt->height) / (1 << s->bitdepth);
81  diff = fabs(mafd - s->prev_mafd);
82  ret = av_clipf(FFMIN(mafd, diff), 0, 100.0);
83  s->prev_mafd = mafd;
84  }
85  ff_dlog(ctx, "get_scene_score() result is:%f\n", ret);
86  return ret;
87 }
88 
89 typedef struct ThreadData {
92 } ThreadData;
93 
94 static int filter_slice(AVFilterContext *ctx, void *arg, int job, int nb_jobs)
95 {
96  FrameRateContext *s = ctx->priv;
97  ThreadData *td = arg;
98  AVFrame *work = s->work;
99  AVFrame *src1 = td->copy_src1;
100  AVFrame *src2 = td->copy_src2;
101  uint16_t src1_factor = td->src1_factor;
102  uint16_t src2_factor = td->src2_factor;
103  int plane;
104 
105  for (plane = 0; plane < 4 && src1->data[plane] && src2->data[plane]; plane++) {
106  const int start = (s->height[plane] * job ) / nb_jobs;
107  const int end = (s->height[plane] * (job+1)) / nb_jobs;
108  uint8_t *src1_data = src1->data[plane] + start * src1->linesize[plane];
109  uint8_t *src2_data = src2->data[plane] + start * src2->linesize[plane];
110  uint8_t *dst_data = work->data[plane] + start * work->linesize[plane];
111 
112  s->blend(src1_data, src1->linesize[plane], src2_data, src2->linesize[plane],
113  dst_data, work->linesize[plane], s->line_size[plane], end - start,
114  src1_factor, src2_factor, s->blend_factor_max >> 1);
115  }
116 
117  return 0;
118 }
119 
121 {
122  FrameRateContext *s = ctx->priv;
123  AVFilterLink *outlink = ctx->outputs[0];
124  double interpolate_scene_score = 0;
125 
126  if ((s->flags & FRAMERATE_FLAG_SCD)) {
127  if (s->score >= 0.0)
128  interpolate_scene_score = s->score;
129  else
130  interpolate_scene_score = s->score = get_scene_score(ctx, s->f0, s->f1);
131  ff_dlog(ctx, "blend_frames() interpolate scene score:%f\n", interpolate_scene_score);
132  }
133  // decide if the shot-change detection allows us to blend two frames
134  if (interpolate_scene_score < s->scene_score) {
135  ThreadData td;
136  td.copy_src1 = s->f0;
137  td.copy_src2 = s->f1;
140 
141  // get work-space for output frame
142  s->work = ff_get_video_buffer(outlink, outlink->w, outlink->h);
143  if (!s->work)
144  return AVERROR(ENOMEM);
145 
146  av_frame_copy_props(s->work, s->f0);
147 
148  ff_dlog(ctx, "blend_frames() INTERPOLATE to create work frame\n");
149  ctx->internal->execute(ctx, filter_slice, &td, NULL, FFMIN(FFMAX(1, outlink->h >> 2), ff_filter_get_nb_threads(ctx)));
150  return 1;
151  }
152  return 0;
153 }
154 
156 {
157  FrameRateContext *s = ctx->priv;
158  int64_t work_pts;
159  int64_t interpolate, interpolate8;
160  int ret;
161 
162  if (!s->f1)
163  return 0;
164  if (!s->f0 && !s->flush)
165  return 0;
166 
167  work_pts = s->start_pts + av_rescale_q(s->n, av_inv_q(s->dest_frame_rate), s->dest_time_base);
168 
169  if (work_pts >= s->pts1 && !s->flush)
170  return 0;
171 
172  if (!s->f0) {
173  s->work = av_frame_clone(s->f1);
174  } else {
175  if (work_pts >= s->pts1 + s->delta && s->flush)
176  return 0;
177 
178  interpolate = av_rescale(work_pts - s->pts0, s->blend_factor_max, s->delta);
179  interpolate8 = av_rescale(work_pts - s->pts0, 256, s->delta);
180  ff_dlog(ctx, "process_work_frame() interpolate: %"PRId64"/256\n", interpolate8);
181  if (interpolate >= s->blend_factor_max || interpolate8 > s->interp_end) {
182  s->work = av_frame_clone(s->f1);
183  } else if (interpolate <= 0 || interpolate8 < s->interp_start) {
184  s->work = av_frame_clone(s->f0);
185  } else {
186  ret = blend_frames(ctx, interpolate);
187  if (ret < 0)
188  return ret;
189  if (ret == 0)
190  s->work = av_frame_clone(interpolate > (s->blend_factor_max >> 1) ? s->f1 : s->f0);
191  }
192  }
193 
194  if (!s->work)
195  return AVERROR(ENOMEM);
196 
197  s->work->pts = work_pts;
198  s->n++;
199 
200  return 1;
201 }
202 
204 {
205  FrameRateContext *s = ctx->priv;
207  return 0;
208 }
209 
211 {
212  FrameRateContext *s = ctx->priv;
213  av_frame_free(&s->f0);
214  av_frame_free(&s->f1);
215 }
216 
218 {
219  static const enum AVPixelFormat pix_fmts[] = {
230  };
231 
232  AVFilterFormats *fmts_list = ff_make_format_list(pix_fmts);
233  if (!fmts_list)
234  return AVERROR(ENOMEM);
235  return ff_set_common_formats(ctx, fmts_list);
236 }
237 
238 #define BLEND_FRAME_FUNC(nbits) \
239 static void blend_frames##nbits##_c(BLEND_FUNC_PARAMS) \
240 { \
241  int line, pixel; \
242  uint##nbits##_t *dstw = (uint##nbits##_t *)dst; \
243  uint##nbits##_t *src1w = (uint##nbits##_t *)src1; \
244  uint##nbits##_t *src2w = (uint##nbits##_t *)src2; \
245  int bytes = nbits / 8; \
246  width /= bytes; \
247  src1_linesize /= bytes; \
248  src2_linesize /= bytes; \
249  dst_linesize /= bytes; \
250  for (line = 0; line < height; line++) { \
251  for (pixel = 0; pixel < width; pixel++) \
252  dstw[pixel] = ((src1w[pixel] * factor1) + \
253  (src2w[pixel] * factor2) + half) \
254  >> BLEND_FACTOR_DEPTH(nbits); \
255  src1w += src1_linesize; \
256  src2w += src2_linesize; \
257  dstw += dst_linesize; \
258  } \
259 }
262 
264 {
265  if (s->bitdepth == 8) {
266  s->blend_factor_max = 1 << BLEND_FACTOR_DEPTH(8);
267  s->blend = blend_frames8_c;
268  } else {
269  s->blend_factor_max = 1 << BLEND_FACTOR_DEPTH(16);
270  s->blend = blend_frames16_c;
271  }
272  if (ARCH_X86)
274 }
275 
277 {
278  AVFilterContext *ctx = inlink->dst;
279  FrameRateContext *s = ctx->priv;
280  const AVPixFmtDescriptor *pix_desc = av_pix_fmt_desc_get(inlink->format);
281  int plane;
282 
283  s->vsub = pix_desc->log2_chroma_h;
284  for (plane = 0; plane < 4; plane++) {
285  s->line_size[plane] = av_image_get_linesize(inlink->format, inlink->w, plane);
286  s->height[plane] = inlink->h >> ((plane == 1 || plane == 2) ? s->vsub : 0);
287  }
288 
289  s->bitdepth = pix_desc->comp[0].depth;
290 
291  s->sad = ff_scene_sad_get_fn(s->bitdepth == 8 ? 8 : 16);
292  if (!s->sad)
293  return AVERROR(EINVAL);
294 
295  s->srce_time_base = inlink->time_base;
296 
298 
299  return 0;
300 }
301 
303 {
304  int ret, status;
305  AVFilterLink *inlink = ctx->inputs[0];
306  AVFilterLink *outlink = ctx->outputs[0];
307  FrameRateContext *s = ctx->priv;
308  AVFrame *inpicref;
309  int64_t pts;
310 
311  FF_FILTER_FORWARD_STATUS_BACK(outlink, inlink);
312 
313 retry:
314  ret = process_work_frame(ctx);
315  if (ret < 0)
316  return ret;
317  else if (ret == 1)
318  return ff_filter_frame(outlink, s->work);
319 
320  ret = ff_inlink_consume_frame(inlink, &inpicref);
321  if (ret < 0)
322  return ret;
323 
324  if (inpicref) {
325  if (inpicref->interlaced_frame)
326  av_log(ctx, AV_LOG_WARNING, "Interlaced frame found - the output will not be correct.\n");
327 
328  if (inpicref->pts == AV_NOPTS_VALUE) {
329  av_log(ctx, AV_LOG_WARNING, "Ignoring frame without PTS.\n");
330  av_frame_free(&inpicref);
331  }
332  }
333 
334  if (inpicref) {
335  pts = av_rescale_q(inpicref->pts, s->srce_time_base, s->dest_time_base);
336 
337  if (s->f1 && pts == s->pts1) {
338  av_log(ctx, AV_LOG_WARNING, "Ignoring frame with same PTS.\n");
339  av_frame_free(&inpicref);
340  }
341  }
342 
343  if (inpicref) {
344  av_frame_free(&s->f0);
345  s->f0 = s->f1;
346  s->pts0 = s->pts1;
347  s->f1 = inpicref;
348  s->pts1 = pts;
349  s->delta = s->pts1 - s->pts0;
350  s->score = -1.0;
351 
352  if (s->delta < 0) {
353  av_log(ctx, AV_LOG_WARNING, "PTS discontinuity.\n");
354  s->start_pts = s->pts1;
355  s->n = 0;
356  av_frame_free(&s->f0);
357  }
358 
359  if (s->start_pts == AV_NOPTS_VALUE)
360  s->start_pts = s->pts1;
361 
362  goto retry;
363  }
364 
365  if (ff_inlink_acknowledge_status(inlink, &status, &pts)) {
366  if (!s->flush) {
367  s->flush = 1;
368  goto retry;
369  }
370  ff_outlink_set_status(outlink, status, pts);
371  return 0;
372  }
373 
374  FF_FILTER_FORWARD_WANTED(outlink, inlink);
375 
376  return FFERROR_NOT_READY;
377 }
378 
379 static int config_output(AVFilterLink *outlink)
380 {
381  AVFilterContext *ctx = outlink->src;
382  FrameRateContext *s = ctx->priv;
383  int exact;
384 
385  ff_dlog(ctx, "config_output()\n");
386 
387  ff_dlog(ctx,
388  "config_output() input time base:%u/%u (%f)\n",
389  ctx->inputs[0]->time_base.num,ctx->inputs[0]->time_base.den,
390  av_q2d(ctx->inputs[0]->time_base));
391 
392  // make sure timebase is small enough to hold the framerate
393 
394  exact = av_reduce(&s->dest_time_base.num, &s->dest_time_base.den,
395  av_gcd((int64_t)s->srce_time_base.num * s->dest_frame_rate.num,
396  (int64_t)s->srce_time_base.den * s->dest_frame_rate.den ),
397  (int64_t)s->srce_time_base.den * s->dest_frame_rate.num, INT_MAX);
398 
399  av_log(ctx, AV_LOG_INFO,
400  "time base:%u/%u -> %u/%u exact:%d\n",
402  s->dest_time_base.num, s->dest_time_base.den, exact);
403  if (!exact) {
404  av_log(ctx, AV_LOG_WARNING, "Timebase conversion is not exact\n");
405  }
406 
407  outlink->frame_rate = s->dest_frame_rate;
408  outlink->time_base = s->dest_time_base;
409 
410  ff_dlog(ctx,
411  "config_output() output time base:%u/%u (%f) w:%d h:%d\n",
412  outlink->time_base.num, outlink->time_base.den,
413  av_q2d(outlink->time_base),
414  outlink->w, outlink->h);
415 
416 
417  av_log(ctx, AV_LOG_INFO, "fps -> fps:%u/%u scene score:%f interpolate start:%d end:%d\n",
419  s->scene_score, s->interp_start, s->interp_end);
420 
421  return 0;
422 }
423 
424 static const AVFilterPad framerate_inputs[] = {
425  {
426  .name = "default",
427  .type = AVMEDIA_TYPE_VIDEO,
428  .config_props = config_input,
429  },
430  { NULL }
431 };
432 
433 static const AVFilterPad framerate_outputs[] = {
434  {
435  .name = "default",
436  .type = AVMEDIA_TYPE_VIDEO,
437  .config_props = config_output,
438  },
439  { NULL }
440 };
441 
443  .name = "framerate",
444  .description = NULL_IF_CONFIG_SMALL("Upsamples or downsamples progressive source between specified frame rates."),
445  .priv_size = sizeof(FrameRateContext),
446  .priv_class = &framerate_class,
447  .init = init,
448  .uninit = uninit,
450  .inputs = framerate_inputs,
451  .outputs = framerate_outputs,
453  .activate = activate,
454 };
int height[4]
height of each plane
Definition: framerate.h:45
int ff_inlink_consume_frame(AVFilterLink *link, AVFrame **rframe)
Take a frame from the link&#39;s FIFO and update the link&#39;s stats.
Definition: avfilter.c:1494
#define NULL
Definition: coverity.c:32
int av_image_get_linesize(enum AVPixelFormat pix_fmt, int width, int plane)
Compute the size of an image line with format pix_fmt and width width for the plane plane...
Definition: imgutils.c:76
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 int process_work_frame(AVFilterContext *ctx)
Definition: vf_framerate.c:155
static av_cold void uninit(AVFilterContext *ctx)
Definition: vf_framerate.c:210
AVOption.
Definition: opt.h:246
double scene_score
score that denotes a scene change has happened
Definition: framerate.h:40
double score
scene change score (f0 to f1)
Definition: framerate.h:63
must be printed separately If there s no standard function for printing the type you the WRITE_1D_FUNC_ARGV macro is a very quick way to create one See libavcodec dv_tablegen c for an example The h file This file should the initialization functions should not do and instead of the variable declarations the generated *_tables h file should be included Since that will be generated in the build the path must be i e not Makefile changes To make the automatic table creation work
Definition: tablegen.txt:45
planar YUV 4:4:4, 24bpp, (1 Cr & Cb sample per 1x1 Y samples)
Definition: pixfmt.h:71
misc image utilities
#define AV_LOG_WARNING
Something somehow does not look correct.
Definition: log.h:182
Main libavfilter public API header.
ff_scene_sad_fn ff_scene_sad_get_fn(int depth)
Definition: scene_sad.c:59
int64_t pts0
last frame pts in dest_time_base
Definition: framerate.h:60
static double get_scene_score(AVFilterContext *ctx, AVFrame *crnt, AVFrame *next)
Definition: vf_framerate.c:65
int num
Numerator.
Definition: rational.h:59
#define AV_PIX_FMT_YUV420P12
Definition: pixfmt.h:391
return FFERROR_NOT_READY
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
AVFILTER_DEFINE_CLASS(framerate)
int64_t pts1
current frame pts in dest_time_base
Definition: framerate.h:61
int framerate
Definition: h264_levels.c:65
static void ff_outlink_set_status(AVFilterLink *link, int status, int64_t pts)
Set the status field of a link from the source filter.
Definition: filters.h:189
int interp_end
end of range to apply linear interpolation
Definition: framerate.h:42
AVFilterFormats * ff_make_format_list(const int *fmts)
Create a list of supported formats.
Definition: formats.c:283
blend_func blend
Definition: framerate.h:68
const char * name
Pad name.
Definition: internal.h:60
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:1093
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 av_cold int end(AVCodecContext *avctx)
Definition: avrndec.c:90
AVRational dest_frame_rate
output frames per second
Definition: framerate.h:38
int64_t pts
Presentation timestamp in time_base units (time when frame should be shown to user).
Definition: frame.h:388
static void interpolate(float *out, float v1, float v2, int size)
Definition: twinvq.c:84
int plane
Definition: vf_blend.c:57
static double av_q2d(AVRational a)
Convert an AVRational to a double.
Definition: rational.h:104
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 ff_dlog(a,...)
int interlaced_frame
The content of the picture is interlaced.
Definition: frame.h:442
int flags
flags affecting frame rate conversion algorithm
Definition: framerate.h:39
#define BLEND_FACTOR_DEPTH(n)
Definition: framerate.h:31
int av_reduce(int *dst_num, int *dst_den, int64_t num, int64_t den, int64_t max)
Reduce a fraction.
Definition: rational.c:35
#define AV_PIX_FMT_YUV422P12
Definition: pixfmt.h:392
#define av_log(a,...)
#define FF_FILTER_FORWARD_STATUS_BACK(outlink, inlink)
Forward the status on an output link to an input link.
Definition: filters.h:199
int line_size[4]
bytes of pixel data per line for each plane
Definition: framerate.h:44
A filter pad used for either input or output.
Definition: internal.h:54
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
Scene SAD functions.
int ff_inlink_acknowledge_status(AVFilterLink *link, int *rstatus, int64_t *rpts)
Test and acknowledge the change of status on the link.
Definition: avfilter.c:1449
int width
Definition: frame.h:353
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
#define td
Definition: regdef.h:70
int64_t n
output frame counter
Definition: framerate.h:66
#define BLEND_FRAME_FUNC(nbits)
Definition: vf_framerate.c:238
uint8_t log2_chroma_h
Amount to shift the luma height right to find the chroma height.
Definition: pixdesc.h:101
uint16_t src1_factor
Definition: vf_framerate.c:91
int interp_start
start of range to apply linear interpolation
Definition: framerate.h:41
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
void * priv
private data for use by the filter
Definition: avfilter.h:353
#define AVFILTER_FLAG_SLICE_THREADS
The filter supports multithreading by splitting frames into multiple parts and processing them concur...
Definition: avfilter.h:116
const char * arg
Definition: jacosubdec.c:66
simple assert() macros that are a bit more flexible than ISO C assert().
#define FRAMERATE_FLAG_SCD
Definition: vf_framerate.c:47
int64_t av_gcd(int64_t a, int64_t b)
Compute the greatest common divisor of two integer operands.
Definition: mathematics.c:37
#define AV_PIX_FMT_YUV444P10
Definition: pixfmt.h:390
#define FFMAX(a, b)
Definition: common.h:94
planar YUV 4:2:2, 16bpp, (1 Cr & Cb sample per 2x1 Y samples)
Definition: pixfmt.h:70
common internal API header
static int blend_frames(AVFilterContext *ctx, int interpolate)
Definition: vf_framerate.c:120
#define AV_PIX_FMT_YUV422P9
Definition: pixfmt.h:385
int ff_filter_get_nb_threads(AVFilterContext *ctx)
Get number of threads for current filter instance.
Definition: avfilter.c:802
int64_t av_rescale(int64_t a, int64_t b, int64_t c)
Rescale a 64-bit integer with rounding to nearest.
Definition: mathematics.c:129
#define FFMIN(a, b)
Definition: common.h:96
planar YUV 4:2:0, 12bpp, full scale (JPEG), deprecated in favor of AV_PIX_FMT_YUV420P and setting col...
Definition: pixfmt.h:78
AVFormatContext * ctx
Definition: movenc.c:48
double prev_mafd
previous MAFD (scene detect only)
Definition: framerate.h:52
AVFrame * copy_src1
Definition: vf_framerate.c:90
#define s(width, name)
Definition: cbs_vp9.c:257
AVFilter ff_vf_framerate
Definition: vf_framerate.c:442
AVRational srce_time_base
timebase of source
Definition: framerate.h:48
#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 const AVFilterPad outputs[]
Definition: af_acontrast.c:203
void ff_framerate_init_x86(FrameRateContext *s)
#define src1
Definition: h264pred.c:139
#define AV_LOG_INFO
Standard information.
Definition: log.h:187
static const AVFilterPad framerate_outputs[]
Definition: vf_framerate.c:433
static int query_formats(AVFilterContext *ctx)
Definition: vf_framerate.c:217
static int filter_slice(AVFilterContext *ctx, void *arg, int job, int nb_jobs)
Definition: vf_framerate.c:94
Used for passing data between threads.
Definition: dsddec.c:64
int linesize[AV_NUM_DATA_POINTERS]
For video, size in bytes of each picture line.
Definition: frame.h:326
Descriptor that unambiguously describes how the bits of a pixel are stored in the up to 4 data planes...
Definition: pixdesc.h:81
int blend_factor_max
Definition: framerate.h:54
AVFrame * work
Definition: framerate.h:56
these buffered frames must be flushed immediately if a new input produces new the filter must not call request_frame to get more It must just process the frame or queue it The task of requesting more frames is left to the filter s request_frame method or the application If a filter has several inputs
#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
Filter definition.
Definition: avfilter.h:144
AVRational dest_time_base
timebase of destination
Definition: framerate.h:49
they must not be accessed directly The fifo field contains the frames that are queued in the input for processing by the filter The status_in and status_out fields contains the queued status(EOF or error) of the link
offset must point to AVRational
Definition: opt.h:236
const char * name
Filter name.
Definition: avfilter.h:148
#define AV_PIX_FMT_YUV420P9
Definition: pixfmt.h:384
static av_cold int init(AVFilterContext *ctx)
Definition: vf_framerate.c:203
AVFilterLink ** outputs
array of pointers to output links
Definition: avfilter.h:350
static enum AVPixelFormat pix_fmts[]
Definition: libkvazaar.c:275
void ff_framerate_init(FrameRateContext *s)
Definition: vf_framerate.c:263
static int64_t pts
#define flags(name, subs,...)
Definition: cbs_av1.c:561
AVFilterInternal * internal
An opaque struct for libavfilter internal use.
Definition: avfilter.h:378
#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
static av_always_inline AVRational av_inv_q(AVRational q)
Invert a rational.
Definition: rational.h:159
#define F
Definition: vf_framerate.c:46
uint16_t src2_factor
Definition: vf_framerate.c:91
planar YUV 4:2:0, 12bpp, (1 Cr & Cb sample per 2x2 Y samples)
Definition: pixfmt.h:66
AVFrame * f0
last frame
Definition: framerate.h:58
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
int den
Denominator.
Definition: rational.h:60
avfilter_execute_func * execute
Definition: internal.h:155
FF_FILTER_FORWARD_WANTED(outlink, inlink)
AVFrame * copy_src2
Definition: vf_framerate.c:90
#define V
Definition: vf_framerate.c:45
static av_always_inline int diff(const uint32_t a, const uint32_t b)
ff_scene_sad_fn sad
Sum of the absolute difference function (scene detect only)
Definition: framerate.h:51
static const AVOption framerate_options[]
Definition: vf_framerate.c:49
static int config_input(AVFilterLink *inlink)
Definition: vf_framerate.c:276
A list of supported formats for one end of a filter link.
Definition: formats.h:64
#define OFFSET(x)
Definition: vf_framerate.c:44
planar YUV 4:1:1, 12bpp, (1 Cr & Cb sample per 4x1 Y samples) full scale (JPEG), deprecated in favor ...
Definition: pixfmt.h:258
static const AVFilterPad framerate_inputs[]
Definition: vf_framerate.c:424
An instance of a filter.
Definition: avfilter.h:338
int height
Definition: frame.h:353
int64_t start_pts
pts of the first output frame
Definition: framerate.h:65
int flush
1 if the filter is being flushed
Definition: framerate.h:64
planar YUV 4:4:0 (1 Cr & Cb sample per 1x2 Y samples)
Definition: pixfmt.h:99
void INT64 start
Definition: avisynth_c.h:766
AVFrame * f1
current frame
Definition: framerate.h:59
static int config_output(AVFilterLink *outlink)
Definition: vf_framerate.c:379
AVFilterLink * inlink
Definition: vf_blend.c:56
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
int64_t delta
pts1 to pts0 delta
Definition: framerate.h:62
int av_frame_copy_props(AVFrame *dst, const AVFrame *src)
Copy only "metadata" fields from src to dst.
Definition: frame.c:654
#define AV_NOPTS_VALUE
Undefined timestamp value.
Definition: avutil.h:248
static int activate(AVFilterContext *ctx)
Definition: vf_framerate.c:302