FFmpeg
vf_hysteresis.c
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1 /*
2  * Copyright (c) 2013 Oka Motofumi (chikuzen.mo at gmail dot com)
3  * Copyright (c) 2016 Paul B Mahol
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 #include "libavutil/imgutils.h"
23 #include "libavutil/pixdesc.h"
24 #include "libavutil/opt.h"
25 #include "avfilter.h"
26 #include "internal.h"
27 #include "video.h"
28 #include "framesync.h"
29 
30 #define OFFSET(x) offsetof(HysteresisContext, x)
31 #define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM
32 
33 typedef struct HysteresisContext {
34  const AVClass *class;
36 
37  int planes;
38  int threshold;
39 
40  int width[4], height[4];
41  int nb_planes;
42  int depth;
43 
44  uint8_t *map;
45  uint32_t *xy;
46  int index;
47 
48  void (*hysteresis)(struct HysteresisContext *s, const uint8_t *bsrc, const uint8_t *osrc, uint8_t *dst,
49  ptrdiff_t blinesize, ptrdiff_t olinesize,
50  ptrdiff_t destlinesize,
51  int w, int h);
53 
54 static const AVOption hysteresis_options[] = {
55  { "planes", "set planes", OFFSET(planes), AV_OPT_TYPE_INT, {.i64=0xF}, 0, 0xF, FLAGS },
56  { "threshold", "set threshold", OFFSET(threshold), AV_OPT_TYPE_INT, {.i64=0}, 0, UINT16_MAX, FLAGS },
57  { NULL }
58 };
59 
60 static const enum AVPixelFormat pix_fmts[] = {
79 };
80 
82 {
83  AVFilterContext *ctx = fs->parent;
84  HysteresisContext *s = fs->opaque;
85  AVFilterLink *outlink = ctx->outputs[0];
86  AVFrame *out, *base, *alt;
87  int ret;
88 
89  if ((ret = ff_framesync_get_frame(&s->fs, 0, &base, 0)) < 0 ||
90  (ret = ff_framesync_get_frame(&s->fs, 1, &alt, 0)) < 0)
91  return ret;
92 
93  if (ctx->is_disabled) {
95  if (!out)
96  return AVERROR(ENOMEM);
97  } else {
98  int p;
99 
100  out = ff_get_video_buffer(outlink, outlink->w, outlink->h);
101  if (!out)
102  return AVERROR(ENOMEM);
104 
105  for (p = 0; p < s->nb_planes; p++) {
106  if (!((1 << p) & s->planes)) {
107  av_image_copy_plane(out->data[p], out->linesize[p], base->data[p], base->linesize[p],
108  s->width[p], s->height[p]);
109  continue;
110  } else {
111  int y;
112 
113  for (y = 0; y < s->height[p]; y++) {
114  memset(out->data[p] + y * out->linesize[p], 0, s->width[p]);
115  }
116  }
117 
118  s->index = -1;
119  memset(s->map, 0, s->width[0] * s->height[0]);
120  memset(s->xy, 0, s->width[0] * s->height[0] * 4);
121 
122  s->hysteresis(s, base->data[p], alt->data[p],
123  out->data[p],
124  base->linesize[p], alt->linesize[p],
125  out->linesize[p],
126  s->width[p], s->height[p]);
127  }
128  }
129  out->pts = av_rescale_q(s->fs.pts, s->fs.time_base, outlink->time_base);
130 
131  return ff_filter_frame(outlink, out);
132 }
133 
134 static int passed(HysteresisContext *s, int x, int y, int w)
135 {
136  return s->map[x + y * w];
137 }
138 
139 static void push(HysteresisContext *s, int x, int y, int w)
140 {
141  s->map[x + y * w] = 0xff;
142  s->xy[++s->index] = (uint16_t)(x) << 16 | (uint16_t)y;
143 }
144 
145 static void pop(HysteresisContext *s, int *x, int *y)
146 {
147  uint32_t val = s->xy[s->index--];
148 
149  *x = val >> 16;
150  *y = val & 0x0000FFFF;
151 }
152 
154 {
155  return s->index < 0;
156 }
157 
158 static void hysteresis8(HysteresisContext *s, const uint8_t *bsrc, const uint8_t *asrc,
159  uint8_t *dst,
160  ptrdiff_t blinesize, ptrdiff_t alinesize,
161  ptrdiff_t dlinesize,
162  int w, int h)
163 {
164  const int t = s->threshold;
165  int x, y;
166 
167  for (y = 0; y < h; y++) {
168  for (x = 0; x < w; x++) {
169  if ((bsrc[x + y * blinesize] > t) && (asrc[x + y * alinesize] > t) && !passed(s, x, y, w)) {
170  int posx, posy;
171 
172  dst[x + y * dlinesize] = asrc[x + y * alinesize];
173 
174  push(s, x, y, w);
175 
176  while (!is_empty(s)) {
177  int x_min, x_max, y_min, y_max, yy, xx;
178 
179  pop(s, &posx, &posy);
180 
181  x_min = posx > 0 ? posx - 1 : 0;
182  x_max = posx < w - 1 ? posx + 1 : posx;
183  y_min = posy > 0 ? posy - 1 : 0;
184  y_max = posy < h - 1 ? posy + 1 : posy;
185 
186  for (yy = y_min; yy <= y_max; yy++) {
187  for (xx = x_min; xx <= x_max; xx++) {
188  if ((asrc[xx + yy * alinesize] > t) && !passed(s, xx, yy, w)) {
189  dst[xx + yy * dlinesize] = asrc[xx + yy * alinesize];
190  push(s, xx, yy, w);
191  }
192  }
193  }
194  }
195  }
196  }
197  }
198 }
199 
200 static void hysteresis16(HysteresisContext *s, const uint8_t *bbsrc, const uint8_t *aasrc,
201  uint8_t *ddst,
202  ptrdiff_t blinesize, ptrdiff_t alinesize,
203  ptrdiff_t dlinesize,
204  int w, int h)
205 {
206  const uint16_t *bsrc = (const uint16_t *)bbsrc;
207  const uint16_t *asrc = (const uint16_t *)aasrc;
208  uint16_t *dst = (uint16_t *)ddst;
209  const int t = s->threshold;
210  int x, y;
211 
212  blinesize /= 2;
213  alinesize /= 2;
214  dlinesize /= 2;
215 
216  for (y = 0; y < h; y++) {
217  for (x = 0; x < w; x++) {
218  if ((bsrc[x + y * blinesize] > t) && (asrc[x + y * alinesize] > t) && !passed(s, x, y, w)) {
219  int posx, posy;
220 
221  dst[x + y * dlinesize] = asrc[x + y * alinesize];
222 
223  push(s, x, y, w);
224 
225  while (!is_empty(s)) {
226  int x_min, x_max, y_min, y_max, yy, xx;
227 
228  pop(s, &posx, &posy);
229 
230  x_min = posx > 0 ? posx - 1 : 0;
231  x_max = posx < w - 1 ? posx + 1 : posx;
232  y_min = posy > 0 ? posy - 1 : 0;
233  y_max = posy < h - 1 ? posy + 1 : posy;
234 
235  for (yy = y_min; yy <= y_max; yy++) {
236  for (xx = x_min; xx <= x_max; xx++) {
237  if ((asrc[xx + yy * alinesize] > t) && !passed(s, xx, yy, w)) {
238  dst[xx + yy * dlinesize] = asrc[xx + yy * alinesize];
239  push(s, xx, yy, w);
240  }
241  }
242  }
243  }
244  }
245  }
246  }
247 }
248 
250 {
251  AVFilterContext *ctx = inlink->dst;
252  HysteresisContext *s = ctx->priv;
254  int vsub, hsub;
255 
256  s->nb_planes = av_pix_fmt_count_planes(inlink->format);
257 
258  hsub = desc->log2_chroma_w;
259  vsub = desc->log2_chroma_h;
260  s->height[1] = s->height[2] = AV_CEIL_RSHIFT(inlink->h, vsub);
261  s->height[0] = s->height[3] = inlink->h;
262  s->width[1] = s->width[2] = AV_CEIL_RSHIFT(inlink->w, hsub);
263  s->width[0] = s->width[3] = inlink->w;
264 
265  s->depth = desc->comp[0].depth;
266 
267  if (desc->comp[0].depth == 8)
268  s->hysteresis = hysteresis8;
269  else
270  s->hysteresis = hysteresis16;
271 
272  s->map = av_calloc(inlink->w, inlink->h * sizeof (*s->map));
273  if (!s->map)
274  return AVERROR(ENOMEM);
275 
276  s->xy = av_calloc(inlink->w, inlink->h * sizeof(*s->xy));
277  if (!s->xy)
278  return AVERROR(ENOMEM);
279 
280  return 0;
281 }
282 
283 static int config_output(AVFilterLink *outlink)
284 {
285  AVFilterContext *ctx = outlink->src;
286  HysteresisContext *s = ctx->priv;
287  AVFilterLink *base = ctx->inputs[0];
288  AVFilterLink *alt = ctx->inputs[1];
289  FFFrameSyncIn *in;
290  int ret;
291 
292  if (base->w != alt->w || base->h != alt->h) {
293  av_log(ctx, AV_LOG_ERROR, "First input link %s parameters "
294  "(size %dx%d) do not match the corresponding "
295  "second input link %s parameters (size %dx%d)\n",
296  ctx->input_pads[0].name, base->w, base->h,
297  ctx->input_pads[1].name,
298  alt->w, alt->h);
299  return AVERROR(EINVAL);
300  }
301 
302  outlink->w = base->w;
303  outlink->h = base->h;
304  outlink->sample_aspect_ratio = base->sample_aspect_ratio;
305  outlink->frame_rate = base->frame_rate;
306 
307  if ((ret = ff_framesync_init(&s->fs, ctx, 2)) < 0)
308  return ret;
309 
310  in = s->fs.in;
311  in[0].time_base = base->time_base;
312  in[1].time_base = alt->time_base;
313  in[0].sync = 1;
314  in[0].before = EXT_STOP;
315  in[0].after = EXT_INFINITY;
316  in[1].sync = 1;
317  in[1].before = EXT_STOP;
318  in[1].after = EXT_INFINITY;
319  s->fs.opaque = s;
320  s->fs.on_event = process_frame;
321 
322  ret = ff_framesync_configure(&s->fs);
323  outlink->time_base = s->fs.time_base;
324 
325  return ret;
326 }
327 
329 {
330  HysteresisContext *s = ctx->priv;
331  return ff_framesync_activate(&s->fs);
332 }
333 
335 {
336  HysteresisContext *s = ctx->priv;
337 
338  ff_framesync_uninit(&s->fs);
339  av_freep(&s->map);
340  av_freep(&s->xy);
341 }
342 
344 
345 static const AVFilterPad hysteresis_inputs[] = {
346  {
347  .name = "base",
348  .type = AVMEDIA_TYPE_VIDEO,
349  .config_props = config_input,
350  },
351  {
352  .name = "alt",
353  .type = AVMEDIA_TYPE_VIDEO,
354  },
355 };
356 
357 static const AVFilterPad hysteresis_outputs[] = {
358  {
359  .name = "default",
360  .type = AVMEDIA_TYPE_VIDEO,
361  .config_props = config_output,
362  },
363 };
364 
366  .name = "hysteresis",
367  .description = NULL_IF_CONFIG_SMALL("Grow first stream into second stream by connecting components."),
368  .preinit = hysteresis_framesync_preinit,
369  .priv_size = sizeof(HysteresisContext),
370  .uninit = uninit,
371  .activate = activate,
375  .priv_class = &hysteresis_class,
377 };
ff_get_video_buffer
AVFrame * ff_get_video_buffer(AVFilterLink *link, int w, int h)
Request a picture buffer with a specific set of permissions.
Definition: video.c:112
AV_PIX_FMT_YUVA422P16
#define AV_PIX_FMT_YUVA422P16
Definition: pixfmt.h:526
HysteresisContext::map
uint8_t * map
Definition: vf_hysteresis.c:44
AV_PIX_FMT_GBRAP16
#define AV_PIX_FMT_GBRAP16
Definition: pixfmt.h:505
FFFrameSyncIn::time_base
AVRational time_base
Time base for the incoming frames.
Definition: framesync.h:117
ff_framesync_configure
int ff_framesync_configure(FFFrameSync *fs)
Configure a frame sync structure.
Definition: framesync.c:134
AVPixelFormat
AVPixelFormat
Pixel format.
Definition: pixfmt.h:71
config_output
static int config_output(AVFilterLink *outlink)
Definition: vf_hysteresis.c:283
AVERROR
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
opt.h
ff_framesync_uninit
void ff_framesync_uninit(FFFrameSync *fs)
Free all memory currently allocated.
Definition: framesync.c:304
out
FILE * out
Definition: movenc.c:54
ff_filter_frame
int ff_filter_frame(AVFilterLink *link, AVFrame *frame)
Send a frame of data to the next filter.
Definition: avfilter.c:1007
av_pix_fmt_desc_get
const AVPixFmtDescriptor * av_pix_fmt_desc_get(enum AVPixelFormat pix_fmt)
Definition: pixdesc.c:2968
ff_framesync_get_frame
int ff_framesync_get_frame(FFFrameSync *fs, unsigned in, AVFrame **rframe, unsigned get)
Get the current frame in an input.
Definition: framesync.c:267
FILTER_PIXFMTS_ARRAY
#define FILTER_PIXFMTS_ARRAY(array)
Definition: internal.h:162
inlink
The exact code depends on how similar the blocks are and how related they are to the and needs to apply these operations to the correct inlink or outlink if there are several Macros are available to factor that when no extra processing is inlink
Definition: filter_design.txt:212
AV_PIX_FMT_YUVA422P9
#define AV_PIX_FMT_YUVA422P9
Definition: pixfmt.h:518
AVFrame
This structure describes decoded (raw) audio or video data.
Definition: frame.h:340
pixdesc.h
AV_PIX_FMT_YUVA420P16
#define AV_PIX_FMT_YUVA420P16
Definition: pixfmt.h:525
w
uint8_t w
Definition: llviddspenc.c:38
AV_PIX_FMT_YUVA420P10
#define AV_PIX_FMT_YUVA420P10
Definition: pixfmt.h:520
AVOption
AVOption.
Definition: opt.h:251
AV_PIX_FMT_YUV420P10
#define AV_PIX_FMT_YUV420P10
Definition: pixfmt.h:482
base
uint8_t base
Definition: vp3data.h:128
is_empty
static int is_empty(HysteresisContext *s)
Definition: vf_hysteresis.c:153
AV_PIX_FMT_YUV440P
@ AV_PIX_FMT_YUV440P
planar YUV 4:4:0 (1 Cr & Cb sample per 1x2 Y samples)
Definition: pixfmt.h:106
HysteresisContext::height
int height[4]
Definition: vf_hysteresis.c:40
AVFilter::name
const char * name
Filter name.
Definition: avfilter.h:170
FFFrameSync
Frame sync structure.
Definition: framesync.h:168
EXT_INFINITY
@ EXT_INFINITY
Extend the frame to infinity.
Definition: framesync.h:75
video.h
AV_PIX_FMT_YUVA422P10
#define AV_PIX_FMT_YUVA422P10
Definition: pixfmt.h:521
AV_PIX_FMT_GRAY9
#define AV_PIX_FMT_GRAY9
Definition: pixfmt.h:462
AVFrame::data
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
Definition: frame.h:361
av_image_copy_plane
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:374
hsub
static void hsub(htype *dst, const htype *src, int bins)
Definition: vf_median.c:73
pix_fmts
static enum AVPixelFormat pix_fmts[]
Definition: vf_hysteresis.c:60
av_pix_fmt_count_planes
int av_pix_fmt_count_planes(enum AVPixelFormat pix_fmt)
Definition: pixdesc.c:3008
AV_PIX_FMT_YUVA420P9
#define AV_PIX_FMT_YUVA420P9
Definition: pixfmt.h:517
EXT_STOP
@ EXT_STOP
Completely stop all streams with this one.
Definition: framesync.h:65
HysteresisContext
Definition: vf_hysteresis.c:33
AV_PIX_FMT_GBRP14
#define AV_PIX_FMT_GBRP14
Definition: pixfmt.h:500
HysteresisContext::width
int width[4]
Definition: vf_hysteresis.c:40
AV_PIX_FMT_GBRAP
@ AV_PIX_FMT_GBRAP
planar GBRA 4:4:4:4 32bpp
Definition: pixfmt.h:212
AV_PIX_FMT_GBRP10
#define AV_PIX_FMT_GBRP10
Definition: pixfmt.h:498
AV_PIX_FMT_YUVA444P16
#define AV_PIX_FMT_YUVA444P16
Definition: pixfmt.h:527
FFFrameSyncIn
Input stream structure.
Definition: framesync.h:102
AV_PIX_FMT_YUV422P9
#define AV_PIX_FMT_YUV422P9
Definition: pixfmt.h:480
HysteresisContext::planes
int planes
Definition: vf_hysteresis.c:37
hysteresis_inputs
static const AVFilterPad hysteresis_inputs[]
Definition: vf_hysteresis.c:345
val
static double val(void *priv, double ch)
Definition: aeval.c:78
AV_PIX_FMT_GRAY16
#define AV_PIX_FMT_GRAY16
Definition: pixfmt.h:466
FFFrameSyncIn::sync
unsigned sync
Synchronization level: frames on input at the highest sync level will generate output frame events.
Definition: framesync.h:160
AVFilterPad
A filter pad used for either input or output.
Definition: internal.h:33
AV_PIX_FMT_YUV444P10
#define AV_PIX_FMT_YUV444P10
Definition: pixfmt.h:485
AV_PIX_FMT_YUVJ411P
@ AV_PIX_FMT_YUVJ411P
planar YUV 4:1:1, 12bpp, (1 Cr & Cb sample per 4x1 Y samples) full scale (JPEG), deprecated in favor ...
Definition: pixfmt.h:283
AV_LOG_ERROR
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:180
av_cold
#define av_cold
Definition: attributes.h:90
AV_PIX_FMT_YUV422P16
#define AV_PIX_FMT_YUV422P16
Definition: pixfmt.h:494
activate
static int activate(AVFilterContext *ctx)
Definition: vf_hysteresis.c:328
HysteresisContext::nb_planes
int nb_planes
Definition: vf_hysteresis.c:41
AV_PIX_FMT_YUVJ422P
@ 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:86
AV_PIX_FMT_GBRAP10
#define AV_PIX_FMT_GBRAP10
Definition: pixfmt.h:502
s
#define s(width, name)
Definition: cbs_vp9.c:198
AV_PIX_FMT_GBRAP12
#define AV_PIX_FMT_GBRAP12
Definition: pixfmt.h:503
AV_PIX_FMT_YUVA420P
@ AV_PIX_FMT_YUVA420P
planar YUV 4:2:0, 20bpp, (1 Cr & Cb sample per 2x2 Y & A samples)
Definition: pixfmt.h:108
AV_PIX_FMT_YUV444P16
#define AV_PIX_FMT_YUV444P16
Definition: pixfmt.h:495
AV_CEIL_RSHIFT
#define AV_CEIL_RSHIFT(a, b)
Definition: common.h:51
HysteresisContext::fs
FFFrameSync fs
Definition: vf_hysteresis.c:35
planes
static const struct @376 planes[]
AV_PIX_FMT_YUV420P9
#define AV_PIX_FMT_YUV420P9
Definition: pixfmt.h:479
AV_PIX_FMT_YUV420P16
#define AV_PIX_FMT_YUV420P16
Definition: pixfmt.h:493
ctx
AVFormatContext * ctx
Definition: movenc.c:48
AV_PIX_FMT_GRAY14
#define AV_PIX_FMT_GRAY14
Definition: pixfmt.h:465
av_frame_clone
AVFrame * av_frame_clone(const AVFrame *src)
Create a new frame that references the same data as src.
Definition: frame.c:609
av_rescale_q
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
AV_PIX_FMT_YUV420P
@ AV_PIX_FMT_YUV420P
planar YUV 4:2:0, 12bpp, (1 Cr & Cb sample per 2x2 Y samples)
Definition: pixfmt.h:73
FILTER_INPUTS
#define FILTER_INPUTS(array)
Definition: internal.h:182
AV_PIX_FMT_YUVJ444P
@ 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:87
AV_PIX_FMT_GRAY10
#define AV_PIX_FMT_GRAY10
Definition: pixfmt.h:463
AV_PIX_FMT_GBRP16
#define AV_PIX_FMT_GBRP16
Definition: pixfmt.h:501
AVClass
Describe the class of an AVClass context structure.
Definition: log.h:66
HysteresisContext::index
int index
Definition: vf_hysteresis.c:46
NULL
#define NULL
Definition: coverity.c:32
av_frame_copy_props
int av_frame_copy_props(AVFrame *dst, const AVFrame *src)
Copy only "metadata" fields from src to dst.
Definition: frame.c:736
fs
#define fs(width, name, subs,...)
Definition: cbs_vp9.c:200
push
static void push(HysteresisContext *s, int x, int y, int w)
Definition: vf_hysteresis.c:139
AV_PIX_FMT_YUVJ420P
@ 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:85
process_frame
static int process_frame(FFFrameSync *fs)
Definition: vf_hysteresis.c:81
HysteresisContext::hysteresis
void(* hysteresis)(struct HysteresisContext *s, const uint8_t *bsrc, const uint8_t *osrc, uint8_t *dst, ptrdiff_t blinesize, ptrdiff_t olinesize, ptrdiff_t destlinesize, int w, int h)
Definition: vf_hysteresis.c:48
AV_PIX_FMT_YUV422P10
#define AV_PIX_FMT_YUV422P10
Definition: pixfmt.h:483
AV_PIX_FMT_GRAY8
@ AV_PIX_FMT_GRAY8
Y , 8bpp.
Definition: pixfmt.h:81
AV_PIX_FMT_GBRP9
#define AV_PIX_FMT_GBRP9
Definition: pixfmt.h:497
hysteresis_options
static const AVOption hysteresis_options[]
Definition: vf_hysteresis.c:54
HysteresisContext::threshold
int threshold
Definition: vf_hysteresis.c:38
NULL_IF_CONFIG_SMALL
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification.
Definition: internal.h:106
FLAGS
#define FLAGS
Definition: vf_hysteresis.c:31
AV_PIX_FMT_YUV422P12
#define AV_PIX_FMT_YUV422P12
Definition: pixfmt.h:487
AV_PIX_FMT_YUV444P12
#define AV_PIX_FMT_YUV444P12
Definition: pixfmt.h:489
HysteresisContext::depth
int depth
Definition: vf_hysteresis.c:42
AV_PIX_FMT_YUVA444P
@ AV_PIX_FMT_YUVA444P
planar YUV 4:4:4 32bpp, (1 Cr & Cb sample per 1x1 Y & A samples)
Definition: pixfmt.h:174
AV_PIX_FMT_YUVA444P10
#define AV_PIX_FMT_YUVA444P10
Definition: pixfmt.h:522
FRAMESYNC_DEFINE_CLASS
FRAMESYNC_DEFINE_CLASS(hysteresis, HysteresisContext, fs)
internal.h
AV_PIX_FMT_GBRP12
#define AV_PIX_FMT_GBRP12
Definition: pixfmt.h:499
AV_PIX_FMT_YUVJ440P
@ 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:107
HysteresisContext::xy
uint32_t * xy
Definition: vf_hysteresis.c:45
AVFilterPad::name
const char * name
Pad name.
Definition: internal.h:39
av_calloc
void * av_calloc(size_t nmemb, size_t size)
Definition: mem.c:262
AV_PIX_FMT_YUV444P9
#define AV_PIX_FMT_YUV444P9
Definition: pixfmt.h:481
AVFilter
Filter definition.
Definition: avfilter.h:166
ret
ret
Definition: filter_design.txt:187
AV_PIX_FMT_YUVA444P9
#define AV_PIX_FMT_YUVA444P9
Definition: pixfmt.h:519
ff_framesync_init
int ff_framesync_init(FFFrameSync *fs, AVFilterContext *parent, unsigned nb_in)
Initialize a frame sync structure.
Definition: framesync.c:86
AV_PIX_FMT_YUV420P12
#define AV_PIX_FMT_YUV420P12
Definition: pixfmt.h:486
AV_PIX_FMT_YUV422P14
#define AV_PIX_FMT_YUV422P14
Definition: pixfmt.h:491
FFFrameSyncIn::before
enum FFFrameSyncExtMode before
Extrapolation mode for timestamps before the first frame.
Definition: framesync.h:107
framesync.h
AV_PIX_FMT_NONE
@ AV_PIX_FMT_NONE
Definition: pixfmt.h:72
AV_OPT_TYPE_INT
@ AV_OPT_TYPE_INT
Definition: opt.h:225
avfilter.h
hysteresis16
static void hysteresis16(HysteresisContext *s, const uint8_t *bbsrc, const uint8_t *aasrc, uint8_t *ddst, ptrdiff_t blinesize, ptrdiff_t alinesize, ptrdiff_t dlinesize, int w, int h)
Definition: vf_hysteresis.c:200
OFFSET
#define OFFSET(x)
Definition: vf_hysteresis.c:30
AV_PIX_FMT_YUV444P
@ AV_PIX_FMT_YUV444P
planar YUV 4:4:4, 24bpp, (1 Cr & Cb sample per 1x1 Y samples)
Definition: pixfmt.h:78
AVFilterContext
An instance of a filter.
Definition: avfilter.h:409
hysteresis_outputs
static const AVFilterPad hysteresis_outputs[]
Definition: vf_hysteresis.c:357
AV_PIX_FMT_GBRP
@ AV_PIX_FMT_GBRP
planar GBR 4:4:4 24bpp
Definition: pixfmt.h:165
desc
const char * desc
Definition: libsvtav1.c:83
AVMEDIA_TYPE_VIDEO
@ AVMEDIA_TYPE_VIDEO
Definition: avutil.h:201
AV_PIX_FMT_YUV422P
@ AV_PIX_FMT_YUV422P
planar YUV 4:2:2, 16bpp, (1 Cr & Cb sample per 2x1 Y samples)
Definition: pixfmt.h:77
AVPixFmtDescriptor
Descriptor that unambiguously describes how the bits of a pixel are stored in the up to 4 data planes...
Definition: pixdesc.h:69
uninit
static av_cold void uninit(AVFilterContext *ctx)
Definition: vf_hysteresis.c:334
FILTER_OUTPUTS
#define FILTER_OUTPUTS(array)
Definition: internal.h:183
config_input
static int config_input(AVFilterLink *inlink)
Definition: vf_hysteresis.c:249
av_freep
#define av_freep(p)
Definition: tableprint_vlc.h:34
AV_PIX_FMT_YUV411P
@ AV_PIX_FMT_YUV411P
planar YUV 4:1:1, 12bpp, (1 Cr & Cb sample per 4x1 Y samples)
Definition: pixfmt.h:80
AVFILTER_FLAG_SUPPORT_TIMELINE_INTERNAL
#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:155
imgutils.h
AVFrame::linesize
int linesize[AV_NUM_DATA_POINTERS]
For video, a positive or negative value, which is typically indicating the size in bytes of each pict...
Definition: frame.h:385
AV_PIX_FMT_YUV410P
@ AV_PIX_FMT_YUV410P
planar YUV 4:1:0, 9bpp, (1 Cr & Cb sample per 4x4 Y samples)
Definition: pixfmt.h:79
av_log
#define av_log(a,...)
Definition: tableprint_vlc.h:27
FFFrameSyncIn::after
enum FFFrameSyncExtMode after
Extrapolation mode for timestamps after the last frame.
Definition: framesync.h:112
ff_vf_hysteresis
const AVFilter ff_vf_hysteresis
Definition: vf_hysteresis.c:365
AV_PIX_FMT_YUV440P12
#define AV_PIX_FMT_YUV440P12
Definition: pixfmt.h:488
h
h
Definition: vp9dsp_template.c:2038
AV_PIX_FMT_YUV444P14
#define AV_PIX_FMT_YUV444P14
Definition: pixfmt.h:492
ff_framesync_activate
int ff_framesync_activate(FFFrameSync *fs)
Examine the frames in the filter's input and try to produce output.
Definition: framesync.c:355
AV_PIX_FMT_GRAY12
#define AV_PIX_FMT_GRAY12
Definition: pixfmt.h:464
passed
static int passed(HysteresisContext *s, int x, int y, int w)
Definition: vf_hysteresis.c:134
hysteresis8
static void hysteresis8(HysteresisContext *s, const uint8_t *bsrc, const uint8_t *asrc, uint8_t *dst, ptrdiff_t blinesize, ptrdiff_t alinesize, ptrdiff_t dlinesize, int w, int h)
Definition: vf_hysteresis.c:158
AV_PIX_FMT_YUVA422P
@ AV_PIX_FMT_YUVA422P
planar YUV 4:2:2 24bpp, (1 Cr & Cb sample per 2x1 Y & A samples)
Definition: pixfmt.h:173
AV_PIX_FMT_YUV420P14
#define AV_PIX_FMT_YUV420P14
Definition: pixfmt.h:490
pop
static void pop(HysteresisContext *s, int *x, int *y)
Definition: vf_hysteresis.c:145