FFmpeg
vf_maskedclamp.c
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1 /*
2  * Copyright (c) 2016 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/pixdesc.h"
23 #include "libavutil/opt.h"
24 #include "avfilter.h"
25 #include "formats.h"
26 #include "internal.h"
27 #include "video.h"
28 #include "framesync.h"
29 
30 #define OFFSET(x) offsetof(MaskedClampContext, x)
31 #define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM
32 
33 typedef struct ThreadData {
34  AVFrame *b, *o, *m, *d;
35 } ThreadData;
36 
37 typedef struct MaskedClampContext {
38  const AVClass *class;
39 
40  int planes;
42  int overshoot;
43 
44  int linesize[4];
45  int width[4], height[4];
46  int nb_planes;
47  int depth;
49 
50  int (*maskedclamp)(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs);
52 
53 static const AVOption maskedclamp_options[] = {
54  { "undershoot", "set undershoot", OFFSET(undershoot), AV_OPT_TYPE_INT, {.i64=0}, 0, UINT16_MAX, FLAGS },
55  { "overshoot", "set overshoot", OFFSET(overshoot), AV_OPT_TYPE_INT, {.i64=0}, 0, UINT16_MAX, FLAGS },
56  { "planes", "set planes", OFFSET(planes), AV_OPT_TYPE_INT, {.i64=0xF}, 0, 0xF, FLAGS },
57  { NULL }
58 };
59 
60 AVFILTER_DEFINE_CLASS(maskedclamp);
61 
63 {
64  static const enum AVPixelFormat pix_fmts[] = {
83  };
84 
85  return ff_set_common_formats(ctx, ff_make_format_list(pix_fmts));
86 }
87 
89 {
90  AVFilterContext *ctx = fs->parent;
92  AVFilterLink *outlink = ctx->outputs[0];
93  AVFrame *out, *base, *dark, *bright;
94  int ret;
95 
96  if ((ret = ff_framesync_get_frame(&s->fs, 0, &base, 0)) < 0 ||
97  (ret = ff_framesync_get_frame(&s->fs, 1, &dark, 0)) < 0 ||
98  (ret = ff_framesync_get_frame(&s->fs, 2, &bright, 0)) < 0)
99  return ret;
100 
101  if (ctx->is_disabled) {
102  out = av_frame_clone(base);
103  if (!out)
104  return AVERROR(ENOMEM);
105  } else {
106  ThreadData td;
107 
108  out = ff_get_video_buffer(outlink, outlink->w, outlink->h);
109  if (!out)
110  return AVERROR(ENOMEM);
111  av_frame_copy_props(out, base);
112 
113  td.b = base;
114  td.o = dark;
115  td.m = bright;
116  td.d = out;
117 
118  ctx->internal->execute(ctx, s->maskedclamp, &td, NULL, FFMIN(s->height[0],
120  }
121  out->pts = av_rescale_q(s->fs.pts, s->fs.time_base, outlink->time_base);
122 
123  return ff_filter_frame(outlink, out);
124 }
125 
126 static int maskedclamp8(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
127 {
128  MaskedClampContext *s = ctx->priv;
129  ThreadData *td = arg;
130  int p;
131 
132  for (p = 0; p < s->nb_planes; p++) {
133  const ptrdiff_t blinesize = td->b->linesize[p];
134  const ptrdiff_t brightlinesize = td->m->linesize[p];
135  const ptrdiff_t darklinesize = td->o->linesize[p];
136  const ptrdiff_t dlinesize = td->d->linesize[p];
137  const int w = s->width[p];
138  const int h = s->height[p];
139  const int slice_start = (h * jobnr) / nb_jobs;
140  const int slice_end = (h * (jobnr+1)) / nb_jobs;
141  const uint8_t *bsrc = td->b->data[p] + slice_start * blinesize;
142  const uint8_t *darksrc = td->o->data[p] + slice_start * darklinesize;
143  const uint8_t *brightsrc = td->m->data[p] + slice_start * brightlinesize;
144  uint8_t *dst = td->d->data[p] + slice_start * dlinesize;
145  const int undershoot = s->undershoot;
146  const int overshoot = s->overshoot;
147  int x, y;
148 
149  if (!((1 << p) & s->planes)) {
150  av_image_copy_plane(dst, dlinesize, bsrc, blinesize,
151  s->linesize[p], slice_end - slice_start);
152  continue;
153  }
154 
155  for (y = slice_start; y < slice_end; y++) {
156  for (x = 0; x < w; x++) {
157  if (bsrc[x] < darksrc[x] - undershoot)
158  dst[x] = darksrc[x] - undershoot;
159  else if (bsrc[x] > brightsrc[x] + overshoot)
160  dst[x] = brightsrc[x] + overshoot;
161  else
162  dst[x] = bsrc[x];
163  }
164 
165  dst += dlinesize;
166  bsrc += blinesize;
167  darksrc += darklinesize;
168  brightsrc += brightlinesize;
169  }
170  }
171 
172  return 0;
173 }
174 
175 static int maskedclamp16(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
176 {
177  MaskedClampContext *s = ctx->priv;
178  ThreadData *td = arg;
179  int p;
180 
181  for (p = 0; p < s->nb_planes; p++) {
182  const ptrdiff_t blinesize = td->b->linesize[p] / 2;
183  const ptrdiff_t brightlinesize = td->m->linesize[p] / 2;
184  const ptrdiff_t darklinesize = td->o->linesize[p] / 2;
185  const ptrdiff_t dlinesize = td->d->linesize[p] / 2;
186  const int w = s->width[p];
187  const int h = s->height[p];
188  const int slice_start = (h * jobnr) / nb_jobs;
189  const int slice_end = (h * (jobnr+1)) / nb_jobs;
190  const uint16_t *bsrc = (const uint16_t *)td->b->data[p] + slice_start * blinesize;
191  const uint16_t *darksrc = (const uint16_t *)td->o->data[p] + slice_start * darklinesize;
192  const uint16_t *brightsrc = (const uint16_t *)td->m->data[p] + slice_start * brightlinesize;
193  uint16_t *dst = (uint16_t *)td->d->data[p] + slice_start * dlinesize;
194  const int undershoot = s->undershoot;
195  const int overshoot = s->overshoot;
196  int x, y;
197 
198  if (!((1 << p) & s->planes)) {
199  av_image_copy_plane((uint8_t *)dst, dlinesize, (const uint8_t *)bsrc, blinesize,
200  s->linesize[p], slice_end - slice_start);
201  continue;
202  }
203 
204  for (y = slice_start; y < slice_end; y++) {
205  for (x = 0; x < w; x++) {
206  if (bsrc[x] < darksrc[x] - undershoot)
207  dst[x] = darksrc[x] - undershoot;
208  else if (bsrc[x] > brightsrc[x] + overshoot)
209  dst[x] = brightsrc[x] + overshoot;
210  else
211  dst[x] = bsrc[x];
212  }
213 
214  dst += dlinesize;
215  bsrc += blinesize;
216  darksrc += darklinesize;
217  brightsrc += brightlinesize;
218  }
219  }
220 
221  return 0;
222 }
223 
225 {
226  AVFilterContext *ctx = inlink->dst;
227  MaskedClampContext *s = ctx->priv;
229  int vsub, hsub, ret;
230 
232 
233  if ((ret = av_image_fill_linesizes(s->linesize, inlink->format, inlink->w)) < 0)
234  return ret;
235 
236  hsub = desc->log2_chroma_w;
237  vsub = desc->log2_chroma_h;
238  s->height[1] = s->height[2] = AV_CEIL_RSHIFT(inlink->h, vsub);
239  s->height[0] = s->height[3] = inlink->h;
240  s->width[1] = s->width[2] = AV_CEIL_RSHIFT(inlink->w, hsub);
241  s->width[0] = s->width[3] = inlink->w;
242 
243  s->depth = desc->comp[0].depth;
244 
245  if (desc->comp[0].depth == 8)
247  else
249 
250  return 0;
251 }
252 
253 static int config_output(AVFilterLink *outlink)
254 {
255  AVFilterContext *ctx = outlink->src;
256  MaskedClampContext *s = ctx->priv;
257  AVFilterLink *base = ctx->inputs[0];
258  AVFilterLink *dark = ctx->inputs[1];
259  AVFilterLink *bright = ctx->inputs[2];
260  FFFrameSyncIn *in;
261  int ret;
262 
263  if (base->format != dark->format ||
264  base->format != bright->format) {
265  av_log(ctx, AV_LOG_ERROR, "inputs must be of same pixel format\n");
266  return AVERROR(EINVAL);
267  }
268  if (base->w != dark->w || base->h != dark->h ||
269  base->w != bright->w || base->h != bright->h) {
270  av_log(ctx, AV_LOG_ERROR, "First input link %s parameters "
271  "(size %dx%d) do not match the corresponding "
272  "second input link %s parameters (%dx%d) "
273  "and/or third input link %s parameters (size %dx%d)\n",
274  ctx->input_pads[0].name, base->w, base->h,
275  ctx->input_pads[1].name, dark->w, dark->h,
276  ctx->input_pads[2].name, bright->w, bright->h);
277  return AVERROR(EINVAL);
278  }
279 
280  outlink->w = base->w;
281  outlink->h = base->h;
282  outlink->sample_aspect_ratio = base->sample_aspect_ratio;
283  outlink->frame_rate = base->frame_rate;
284 
285  if ((ret = ff_framesync_init(&s->fs, ctx, 3)) < 0)
286  return ret;
287 
288  in = s->fs.in;
289  in[0].time_base = base->time_base;
290  in[1].time_base = dark->time_base;
291  in[2].time_base = bright->time_base;
292  in[0].sync = 1;
293  in[0].before = EXT_STOP;
294  in[0].after = EXT_INFINITY;
295  in[1].sync = 1;
296  in[1].before = EXT_STOP;
297  in[1].after = EXT_INFINITY;
298  in[2].sync = 1;
299  in[2].before = EXT_STOP;
300  in[2].after = EXT_INFINITY;
301  s->fs.opaque = s;
303 
304  ret = ff_framesync_configure(&s->fs);
305  outlink->time_base = s->fs.time_base;
306 
307  return ret;
308 }
309 
311 {
312  MaskedClampContext *s = ctx->priv;
313  return ff_framesync_activate(&s->fs);
314 }
315 
317 {
318  MaskedClampContext *s = ctx->priv;
319 
320  ff_framesync_uninit(&s->fs);
321 }
322 
323 static const AVFilterPad maskedclamp_inputs[] = {
324  {
325  .name = "base",
326  .type = AVMEDIA_TYPE_VIDEO,
327  .config_props = config_input,
328  },
329  {
330  .name = "dark",
331  .type = AVMEDIA_TYPE_VIDEO,
332  },
333  {
334  .name = "bright",
335  .type = AVMEDIA_TYPE_VIDEO,
336  },
337  { NULL }
338 };
339 
341  {
342  .name = "default",
343  .type = AVMEDIA_TYPE_VIDEO,
344  .config_props = config_output,
345  },
346  { NULL }
347 };
348 
350  .name = "maskedclamp",
351  .description = NULL_IF_CONFIG_SMALL("Clamp first stream with second stream and third stream."),
352  .priv_size = sizeof(MaskedClampContext),
353  .uninit = uninit,
354  .activate = activate,
356  .inputs = maskedclamp_inputs,
357  .outputs = maskedclamp_outputs,
358  .priv_class = &maskedclamp_class,
360 };
#define NULL
Definition: coverity.c:32
static const struct @314 planes[]
#define AV_PIX_FMT_YUVA422P16
Definition: pixfmt.h:430
AVFrame * out
Definition: af_adeclick.c:488
#define AV_PIX_FMT_YUVA422P9
Definition: pixfmt.h:422
const AVPixFmtDescriptor * av_pix_fmt_desc_get(enum AVPixelFormat pix_fmt)
Definition: pixdesc.c:2522
This structure describes decoded (raw) audio or video data.
Definition: frame.h:295
AVOption.
Definition: opt.h:246
#define AV_PIX_FMT_YUVA420P10
Definition: pixfmt.h:424
#define AV_PIX_FMT_YUV444P14
Definition: pixfmt.h:397
#define AV_PIX_FMT_GBRAP10
Definition: pixfmt.h:407
static const AVFilterPad maskedclamp_outputs[]
#define AV_PIX_FMT_YUVA422P10
Definition: pixfmt.h:425
planar YUV 4:4:4, 24bpp, (1 Cr & Cb sample per 1x1 Y samples)
Definition: pixfmt.h:71
misc image utilities
int av_pix_fmt_count_planes(enum AVPixelFormat pix_fmt)
Definition: pixdesc.c:2562
Main libavfilter public API header.
static int config_output(AVFilterLink *outlink)
planar GBR 4:4:4 24bpp
Definition: pixfmt.h:168
#define AV_PIX_FMT_GBRP10
Definition: pixfmt.h:403
#define AV_PIX_FMT_GRAY9
Definition: pixfmt.h:367
#define AV_PIX_FMT_YUV420P12
Definition: pixfmt.h:391
int ff_framesync_configure(FFFrameSync *fs)
Configure a frame sync structure.
Definition: framesync.c:117
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 FLAGS
int is_disabled
the enabled state from the last expression evaluation
Definition: avfilter.h:385
int64_t pts
Timestamp of the current event.
Definition: framesync.h:167
uint8_t log2_chroma_w
Amount to shift the luma width right to find the chroma width.
Definition: pixdesc.h:92
enum FFFrameSyncExtMode before
Extrapolation mode for timestamps before the first frame.
Definition: framesync.h:86
AVFilterFormats * ff_make_format_list(const int *fmts)
Create a list of supported formats.
Definition: formats.c:283
#define AV_PIX_FMT_GRAY10
Definition: pixfmt.h:368
const char * name
Pad name.
Definition: internal.h:60
AVFilterContext * parent
Parent filter context.
Definition: framesync.h:152
#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
planar YUV 4:2:0, 20bpp, (1 Cr & Cb sample per 2x2 Y & A samples)
Definition: pixfmt.h:101
AVComponentDescriptor comp[4]
Parameters that describe how pixels are packed.
Definition: pixdesc.h:117
uint8_t
#define av_cold
Definition: attributes.h:82
#define fs(width, name, subs,...)
Definition: cbs_vp9.c:259
AVOptions.
int64_t pts
Presentation timestamp in time_base units (time when frame should be shown to user).
Definition: frame.h:388
int(* maskedclamp)(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
FFFrameSyncIn * in
Pointer to array of inputs.
Definition: framesync.h:203
#define AV_PIX_FMT_YUVA420P9
Definition: pixfmt.h:421
#define AV_PIX_FMT_GBRP9
Definition: pixfmt.h:402
int height
Definition: vf_avgblur.c:61
AVFrame * dst
Definition: vf_blend.c:55
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
int linesize
Definition: vf_avgblur.c:64
#define AV_PIX_FMT_YUV444P16
Definition: pixfmt.h:400
static const AVFilterPad maskedclamp_inputs[]
enum FFFrameSyncExtMode after
Extrapolation mode for timestamps after the last frame.
Definition: framesync.h:91
Input stream structure.
Definition: framesync.h:81
#define AV_PIX_FMT_YUV422P12
Definition: pixfmt.h:392
#define AV_PIX_FMT_YUVA420P16
Definition: pixfmt.h:429
#define av_log(a,...)
#define OFFSET(x)
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
AVFilterPad * input_pads
array of input pads
Definition: avfilter.h:345
planar YUV 4:2:2 24bpp, (1 Cr & Cb sample per 2x1 Y & A samples)
Definition: pixfmt.h:176
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:176
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
#define td
Definition: regdef.h:70
uint8_t log2_chroma_h
Amount to shift the luma height right to find the chroma height.
Definition: pixdesc.h:101
void ff_framesync_uninit(FFFrameSync *fs)
Free all memory currently allocated.
Definition: framesync.c:293
Frame sync structure.
Definition: framesync.h:146
static const AVOption maskedclamp_options[]
#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
#define AV_PIX_FMT_YUVA444P16
Definition: pixfmt.h:431
const char * arg
Definition: jacosubdec.c:66
#define AV_PIX_FMT_GBRAP12
Definition: pixfmt.h:408
AVRational time_base
Time base for the incoming frames.
Definition: framesync.h:96
static int maskedclamp8(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
int ff_framesync_activate(FFFrameSync *fs)
Examine the frames in the filter&#39;s input and try to produce output.
Definition: framesync.c:344
#define AV_PIX_FMT_YUV444P10
Definition: pixfmt.h:390
int(* on_event)(struct FFFrameSync *fs)
Callback called when a frame event is ready.
Definition: framesync.h:172
#define AV_PIX_FMT_GBRAP16
Definition: pixfmt.h:409
planar YUV 4:2:2, 16bpp, (1 Cr & Cb sample per 2x1 Y samples)
Definition: pixfmt.h:70
static int config_input(AVFilterLink *inlink)
#define AV_PIX_FMT_YUV422P9
Definition: pixfmt.h:385
#define AV_PIX_FMT_GBRP16
Definition: pixfmt.h:406
int ff_filter_get_nb_threads(AVFilterContext *ctx)
Get number of threads for current filter instance.
Definition: avfilter.c:802
#define AV_PIX_FMT_GRAY16
Definition: pixfmt.h:371
#define FFMIN(a, b)
Definition: common.h:96
AVFrame * d
planar YUV 4:2:0, 12bpp, full scale (JPEG), deprecated in favor of AV_PIX_FMT_YUV420P and setting col...
Definition: pixfmt.h:78
AVFrame * m
static av_cold void uninit(AVFilterContext *ctx)
AVFormatContext * ctx
Definition: movenc.c:48
AVRational time_base
Time base for the output events.
Definition: framesync.h:162
#define AV_PIX_FMT_YUVA444P10
Definition: pixfmt.h:426
AVFilter ff_vf_maskedclamp
void * opaque
Opaque pointer, not used by the API.
Definition: framesync.h:177
#define AV_PIX_FMT_YUV444P9
Definition: pixfmt.h:386
#define AV_PIX_FMT_GBRP14
Definition: pixfmt.h:405
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
#define AV_PIX_FMT_YUV420P16
Definition: pixfmt.h:398
#define AV_PIX_FMT_YUV420P14
Definition: pixfmt.h:395
Extend the frame to infinity.
Definition: framesync.h:75
Used for passing data between threads.
Definition: af_adeclick.c:487
int linesize[AV_NUM_DATA_POINTERS]
For video, size in bytes of each picture line.
Definition: frame.h:326
int ff_framesync_init(FFFrameSync *fs, AVFilterContext *parent, unsigned nb_in)
Initialize a frame sync structure.
Definition: framesync.c:77
planar YUV 4:4:4 32bpp, (1 Cr & Cb sample per 1x1 Y & A samples)
Definition: pixfmt.h:177
Descriptor that unambiguously describes how the bits of a pixel are stored in the up to 4 data planes...
Definition: pixdesc.h:81
#define AV_PIX_FMT_GRAY14
Definition: pixfmt.h:370
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
static int query_formats(AVFilterContext *ctx)
#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
AVFILTER_DEFINE_CLASS(maskedclamp)
unsigned sync
Synchronization level: frames on input at the highest sync level will generate output frame events...
Definition: framesync.h:139
Describe the class of an AVClass context structure.
Definition: log.h:67
Filter definition.
Definition: avfilter.h:144
int av_image_fill_linesizes(int linesizes[4], enum AVPixelFormat pix_fmt, int width)
Fill plane linesizes for an image with pixel format pix_fmt and width width.
Definition: imgutils.c:89
AVFrame * b
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 AVFILTER_FLAG_SUPPORT_TIMELINE_INTERNAL
Same as AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC, except that the filter will have its filter_frame() c...
Definition: avfilter.h:133
AVFilterLink ** outputs
array of pointers to output links
Definition: avfilter.h:350
static enum AVPixelFormat pix_fmts[]
Definition: libkvazaar.c:275
#define AV_PIX_FMT_YUV422P14
Definition: pixfmt.h:396
#define AV_PIX_FMT_GBRP12
Definition: pixfmt.h:404
#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
AVFrame * base
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
planar GBRA 4:4:4:4 32bpp
Definition: pixfmt.h:215
#define AV_PIX_FMT_YUVA444P9
Definition: pixfmt.h:423
planar YUV 4:4:4, 24bpp, full scale (JPEG), deprecated in favor of AV_PIX_FMT_YUV444P and setting col...
Definition: pixfmt.h:80
planar YUV 4:1:1, 12bpp, (1 Cr & Cb sample per 4x1 Y samples)
Definition: pixfmt.h:73
avfilter_execute_func * execute
Definition: internal.h:155
static int slice_end(AVCodecContext *avctx, AVFrame *pict)
Handle slice ends.
Definition: mpeg12dec.c:2029
Completely stop all streams with this one.
Definition: framesync.h:65
static int process_frame(FFFrameSync *fs)
const AVPixFmtDescriptor * desc
Definition: vf_tonemap.c:196
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 int activate(AVFilterContext *ctx)
An instance of a filter.
Definition: avfilter.h:338
static int maskedclamp16(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
planar YUV 4:4:0 (1 Cr & Cb sample per 1x2 Y samples)
Definition: pixfmt.h:99
AVFrame * in
Definition: af_afftdn.c:1082
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
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 ff_framesync_get_frame(FFFrameSync *fs, unsigned in, AVFrame **rframe, unsigned get)
Get the current frame in an input.
Definition: framesync.c:256
int depth
Number of bits in the component.
Definition: pixdesc.h:58
AVPixelFormat
Pixel format.
Definition: pixfmt.h:64
#define AV_PIX_FMT_YUV422P16
Definition: pixfmt.h:399
int av_frame_copy_props(AVFrame *dst, const AVFrame *src)
Copy only "metadata" fields from src to dst.
Definition: frame.c:654
AVFrame * o
#define AV_CEIL_RSHIFT(a, b)
Definition: common.h:58