FFmpeg
vf_deblock.c
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1 /*
2  * Copyright (c) 2018 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 /*
22  * Based on paper: A Simple and Efficient Deblocking Algorithm for Low Bit-Rate Video Coding.
23  */
24 
25 #include "libavutil/imgutils.h"
26 #include "libavutil/opt.h"
27 #include "libavutil/pixdesc.h"
28 
29 #include "avfilter.h"
30 #include "formats.h"
31 #include "internal.h"
32 #include "video.h"
33 
35 
36 typedef struct DeblockContext {
37  const AVClass *class;
39  int filter;
40  int block;
41  int planes;
42  float alpha;
43  float beta;
44  float gamma;
45  float delta;
46 
47  int ath;
48  int bth;
49  int gth;
50  int dth;
51  int max;
52  int depth;
53  int bpc;
54  int nb_planes;
55  int planewidth[4];
56  int planeheight[4];
57 
58  void (*deblockh)(uint8_t *dst, ptrdiff_t dst_linesize, int block,
59  int ath, int bth, int gth, int dth, int max);
60  void (*deblockv)(uint8_t *dst, ptrdiff_t dst_linesize, int block,
61  int ath, int bth, int gth, int dth, int max);
63 
65 {
66  static const enum AVPixelFormat pixel_fmts[] = {
86  };
88  if (!formats)
89  return AVERROR(ENOMEM);
91 }
92 
93 #define WEAK_HFILTER(name, type, ldiv) \
94 static void deblockh##name##_weak(uint8_t *dstp, ptrdiff_t dst_linesize, int block, \
95  int ath, int bth, int gth, int dth, int max) \
96 { \
97  type *dst; \
98  int x; \
99  \
100  dst = (type *)dstp; \
101  dst_linesize /= ldiv; \
102  \
103  for (x = 0; x < block; x++) { \
104  int delta = dst[x] - dst[x - dst_linesize]; \
105  int A, B, C, D, a, b, c, d; \
106  \
107  if (FFABS(delta) >= ath || \
108  FFABS(dst[x - 1 * dst_linesize] - dst[x - 2 * dst_linesize]) >= bth || \
109  FFABS(dst[x + 0 * dst_linesize] - dst[x + 1 * dst_linesize]) >= gth) \
110  continue; \
111  \
112  A = dst[x - 2 * dst_linesize]; \
113  B = dst[x - 1 * dst_linesize]; \
114  C = dst[x + 0 * dst_linesize]; \
115  D = dst[x + 1 * dst_linesize]; \
116  \
117  a = A + delta / 8; \
118  b = B + delta / 2; \
119  c = C - delta / 2; \
120  d = D - delta / 8; \
121  \
122  dst[x - 2 * dst_linesize] = av_clip(a, 0, max); \
123  dst[x - 1 * dst_linesize] = av_clip(b, 0, max); \
124  dst[x + 0 * dst_linesize] = av_clip(c, 0, max); \
125  dst[x + 1 * dst_linesize] = av_clip(d, 0, max); \
126  } \
127 }
128 
129 WEAK_HFILTER(8, uint8_t, 1)
130 WEAK_HFILTER(16, uint16_t, 2)
131 
132 #define WEAK_VFILTER(name, type, ldiv) \
133 static void deblockv##name##_weak(uint8_t *dstp, ptrdiff_t dst_linesize, int block, \
134  int ath, int bth, int gth, int dth, int max) \
135 { \
136  type *dst; \
137  int y; \
138  \
139  dst = (type *)dstp; \
140  dst_linesize /= ldiv; \
141  \
142  for (y = 0; y < block; y++) { \
143  int delta = dst[0] - dst[-1]; \
144  int A, B, C, D, a, b, c, d; \
145  \
146  if (FFABS(delta) >= ath || \
147  FFABS(dst[-1] - dst[-2]) >= bth || \
148  FFABS(dst[0] - dst[1]) >= gth) \
149  continue; \
150  \
151  A = dst[-2]; \
152  B = dst[-1]; \
153  C = dst[+0]; \
154  D = dst[+1]; \
155  \
156  a = A + delta / 8; \
157  b = B + delta / 2; \
158  c = C - delta / 2; \
159  d = D - delta / 8; \
160  \
161  dst[-2] = av_clip(a, 0, max); \
162  dst[-1] = av_clip(b, 0, max); \
163  dst[+0] = av_clip(c, 0, max); \
164  dst[+1] = av_clip(d, 0, max); \
165  \
166  dst += dst_linesize; \
167  } \
168 }
169 
170 WEAK_VFILTER(8, uint8_t, 1)
171 WEAK_VFILTER(16, uint16_t, 2)
172 
173 #define STRONG_HFILTER(name, type, ldiv) \
174 static void deblockh##name##_strong(uint8_t *dstp, ptrdiff_t dst_linesize, int block,\
175  int ath, int bth, int gth, int dth, int max) \
176 { \
177  type *dst; \
178  int x; \
179  \
180  dst = (type *)dstp; \
181  dst_linesize /= ldiv; \
182  \
183  for (x = 0; x < block; x++) { \
184  int A, B, C, D, E, F, a, b, c, d, e, f; \
185  int delta = dst[x] - dst[x - dst_linesize]; \
186  \
187  if (FFABS(delta) >= ath || \
188  FFABS(dst[x - 1 * dst_linesize] - dst[x - 2 * dst_linesize]) >= bth || \
189  FFABS(dst[x + 1 * dst_linesize] - dst[x + 2 * dst_linesize]) >= gth || \
190  FFABS(dst[x + 0 * dst_linesize] - dst[x + 1 * dst_linesize]) >= dth) \
191  continue; \
192  \
193  A = dst[x - 3 * dst_linesize]; \
194  B = dst[x - 2 * dst_linesize]; \
195  C = dst[x - 1 * dst_linesize]; \
196  D = dst[x + 0 * dst_linesize]; \
197  E = dst[x + 1 * dst_linesize]; \
198  F = dst[x + 2 * dst_linesize]; \
199  \
200  a = A + delta / 8; \
201  b = B + delta / 4; \
202  c = C + delta / 2; \
203  d = D - delta / 2; \
204  e = E - delta / 4; \
205  f = F - delta / 8; \
206  \
207  dst[x - 3 * dst_linesize] = av_clip(a, 0, max); \
208  dst[x - 2 * dst_linesize] = av_clip(b, 0, max); \
209  dst[x - 1 * dst_linesize] = av_clip(c, 0, max); \
210  dst[x + 0 * dst_linesize] = av_clip(d, 0, max); \
211  dst[x + 1 * dst_linesize] = av_clip(e, 0, max); \
212  dst[x + 2 * dst_linesize] = av_clip(f, 0, max); \
213  } \
214 }
215 
216 STRONG_HFILTER(8, uint8_t, 1)
217 STRONG_HFILTER(16, uint16_t, 2)
218 
219 #define STRONG_VFILTER(name, type, ldiv) \
220 static void deblockv##name##_strong(uint8_t *dstp, ptrdiff_t dst_linesize, int block,\
221  int ath, int bth, int gth, int dth, int max) \
222 { \
223  type *dst; \
224  int y; \
225  \
226  dst = (type *)dstp; \
227  dst_linesize /= ldiv; \
228  \
229  for (y = 0; y < block; y++) { \
230  int A, B, C, D, E, F, a, b, c, d, e, f; \
231  int delta = dst[0] - dst[-1]; \
232  \
233  if (FFABS(delta) >= ath || \
234  FFABS(dst[-1] - dst[-2]) >= bth || \
235  FFABS(dst[+1] - dst[+2]) >= gth || \
236  FFABS(dst[+0] - dst[+1]) >= dth) \
237  continue; \
238  \
239  A = dst[-3]; \
240  B = dst[-2]; \
241  C = dst[-1]; \
242  D = dst[+0]; \
243  E = dst[+1]; \
244  F = dst[+2]; \
245  \
246  a = A + delta / 8; \
247  b = B + delta / 4; \
248  c = C + delta / 2; \
249  d = D - delta / 2; \
250  e = E - delta / 4; \
251  f = F - delta / 8; \
252  \
253  dst[-3] = av_clip(a, 0, max); \
254  dst[-2] = av_clip(b, 0, max); \
255  dst[-1] = av_clip(c, 0, max); \
256  dst[+0] = av_clip(d, 0, max); \
257  dst[+1] = av_clip(e, 0, max); \
258  dst[+2] = av_clip(f, 0, max); \
259  \
260  dst += dst_linesize; \
261  } \
262 }
263 
264 STRONG_VFILTER(8, uint8_t, 1)
265 STRONG_VFILTER(16, uint16_t, 2)
266 
267 static int config_output(AVFilterLink *outlink)
268 {
269  AVFilterContext *ctx = outlink->src;
270  DeblockContext *s = ctx->priv;
271  AVFilterLink *inlink = ctx->inputs[0];
272 
273  s->desc = av_pix_fmt_desc_get(outlink->format);
274  if (!s->desc)
275  return AVERROR_BUG;
276  s->nb_planes = av_pix_fmt_count_planes(outlink->format);
277  s->depth = s->desc->comp[0].depth;
278  s->bpc = (s->depth + 7) / 8;
279  s->max = (1 << s->depth) - 1;
280  s->ath = s->alpha * s->max;
281  s->bth = s->beta * s->max;
282  s->gth = s->gamma * s->max;
283  s->dth = s->delta * s->max;
284 
285  if (s->depth <= 8 && s->filter == WEAK) {
286  s->deblockh = deblockh8_weak;
287  s->deblockv = deblockv8_weak;
288  } else if (s->depth > 8 && s->filter == WEAK) {
289  s->deblockh = deblockh16_weak;
290  s->deblockv = deblockv16_weak;
291  }
292  if (s->depth <= 8 && s->filter == STRONG) {
293  s->deblockh = deblockh8_strong;
294  s->deblockv = deblockv8_strong;
295  } else if (s->depth > 8 && s->filter == STRONG) {
296  s->deblockh = deblockh16_strong;
297  s->deblockv = deblockv16_strong;
298  }
299 
300  s->planewidth[1] = s->planewidth[2] = AV_CEIL_RSHIFT(inlink->w, s->desc->log2_chroma_w);
301  s->planewidth[0] = s->planewidth[3] = inlink->w;
302 
303  s->planeheight[1] = s->planeheight[2] = AV_CEIL_RSHIFT(inlink->h, s->desc->log2_chroma_h);
304  s->planeheight[0] = s->planeheight[3] = inlink->h;
305 
306  return 0;
307 }
308 
310 {
311  AVFilterContext *ctx = inlink->dst;
312  AVFilterLink *outlink = ctx->outputs[0];
313  DeblockContext *s = ctx->priv;
314  const int block = s->block;
315  AVFrame *out;
316  int plane, x, y;
317 
318  if (av_frame_is_writable(in)) {
319  out = in;
320  } else {
321  out = ff_get_video_buffer(outlink, outlink->w, outlink->h);
322  if (!out) {
323  av_frame_free(&in);
324  return AVERROR(ENOMEM);
325  }
327  }
328 
329  for (plane = 0; plane < s->nb_planes; plane++) {
330  const int width = s->planewidth[plane];
331  const int height = s->planeheight[plane];
332  const uint8_t *src = (const uint8_t *)in->data[plane];
333  uint8_t *dst = (uint8_t *)out->data[plane];
334 
335  if (in != out)
336  av_image_copy_plane(dst, out->linesize[plane],
337  src, in->linesize[plane],
338  width * s->bpc, height);
339 
340  if (!((1 << plane) & s->planes))
341  continue;
342 
343  for (x = block; x < width; x += block)
344  s->deblockv(dst + x * s->bpc, out->linesize[plane],
345  FFMIN(block, height), s->ath, s->bth, s->gth, s->dth, s->max);
346 
347  for (y = block; y < height; y += block) {
348  dst += out->linesize[plane] * block;
349 
350  s->deblockh(dst, out->linesize[plane],
351  FFMIN(block, width),
352  s->ath, s->bth, s->gth, s->dth, s->max);
353 
354  for (x = block; x < width; x += block) {
355  s->deblockh(dst + x * s->bpc, out->linesize[plane],
356  FFMIN(block, width - x),
357  s->ath, s->bth, s->gth, s->dth, s->max);
358  s->deblockv(dst + x * s->bpc, out->linesize[plane],
359  FFMIN(block, height - y),
360  s->ath, s->bth, s->gth, s->dth, s->max);
361  }
362  }
363  }
364 
365  if (in != out)
366  av_frame_free(&in);
367  return ff_filter_frame(outlink, out);
368 }
369 
370 static int process_command(AVFilterContext *ctx, const char *cmd, const char *args,
371  char *res, int res_len, int flags)
372 {
373  int ret;
374 
375  ret = ff_filter_process_command(ctx, cmd, args, res, res_len, flags);
376  if (ret < 0)
377  return ret;
378 
379  return config_output(ctx->outputs[0]);
380 }
381 
382 #define OFFSET(x) offsetof(DeblockContext, x)
383 #define FLAGS AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_RUNTIME_PARAM
384 
385 static const AVOption deblock_options[] = {
386  { "filter", "set type of filter", OFFSET(filter), AV_OPT_TYPE_INT, {.i64=STRONG},0, 1, FLAGS, "filter" },
387  { "weak", 0, 0, AV_OPT_TYPE_CONST, {.i64=WEAK}, 0, 0, FLAGS, "filter" },
388  { "strong", 0, 0, AV_OPT_TYPE_CONST, {.i64=STRONG},0, 0, FLAGS, "filter" },
389  { "block", "set size of block", OFFSET(block), AV_OPT_TYPE_INT, {.i64=8}, 4, 512, FLAGS },
390  { "alpha", "set 1st detection threshold", OFFSET(alpha), AV_OPT_TYPE_FLOAT, {.dbl=.098}, 0, 1, FLAGS },
391  { "beta", "set 2nd detection threshold", OFFSET(beta), AV_OPT_TYPE_FLOAT, {.dbl=.05}, 0, 1, FLAGS },
392  { "gamma", "set 3rd detection threshold", OFFSET(gamma), AV_OPT_TYPE_FLOAT, {.dbl=.05}, 0, 1, FLAGS },
393  { "delta", "set 4th detection threshold", OFFSET(delta), AV_OPT_TYPE_FLOAT, {.dbl=.05}, 0, 1, FLAGS },
394  { "planes", "set planes to filter", OFFSET(planes), AV_OPT_TYPE_INT, {.i64=15}, 0, 15, FLAGS },
395  { NULL },
396 };
397 
398 static const AVFilterPad inputs[] = {
399  {
400  .name = "default",
401  .type = AVMEDIA_TYPE_VIDEO,
402  .filter_frame = filter_frame,
403  },
404  { NULL }
405 };
406 
407 static const AVFilterPad outputs[] = {
408  {
409  .name = "default",
410  .type = AVMEDIA_TYPE_VIDEO,
411  .config_props = config_output,
412  },
413  { NULL }
414 };
415 
416 AVFILTER_DEFINE_CLASS(deblock);
417 
419  .name = "deblock",
420  .description = NULL_IF_CONFIG_SMALL("Deblock video."),
421  .priv_size = sizeof(DeblockContext),
422  .priv_class = &deblock_class,
424  .inputs = inputs,
425  .outputs = outputs,
428 };
formats
formats
Definition: signature.h:48
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:97
AV_PIX_FMT_YUVA422P16
#define AV_PIX_FMT_YUVA422P16
Definition: pixfmt.h:432
AV_PIX_FMT_GBRAP16
#define AV_PIX_FMT_GBRAP16
Definition: pixfmt.h:411
AVPixelFormat
AVPixelFormat
Pixel format.
Definition: pixfmt.h:64
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_make_format_list
AVFilterFormats * ff_make_format_list(const int *fmts)
Create a list of supported formats.
Definition: formats.c:286
DeblockContext::depth
int depth
Definition: vf_deblock.c:52
out
FILE * out
Definition: movenc.c:54
DeblockContext::max
int max
Definition: vf_deblock.c:51
ff_filter_frame
int ff_filter_frame(AVFilterLink *link, AVFrame *frame)
Send a frame of data to the next filter.
Definition: avfilter.c:978
av_pix_fmt_desc_get
const AVPixFmtDescriptor * av_pix_fmt_desc_get(enum AVPixelFormat pix_fmt)
Definition: pixdesc.c:2540
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_frame_free
void av_frame_free(AVFrame **frame)
Free the frame and any dynamically allocated objects in it, e.g.
Definition: frame.c:112
AV_PIX_FMT_YUVA422P9
#define AV_PIX_FMT_YUVA422P9
Definition: pixfmt.h:424
AVFrame
This structure describes decoded (raw) audio or video data.
Definition: frame.h:303
pixdesc.h
AV_PIX_FMT_YUVA420P16
#define AV_PIX_FMT_YUVA420P16
Definition: pixfmt.h:431
outputs
static const AVFilterPad outputs[]
Definition: vf_deblock.c:407
AV_PIX_FMT_YUVA420P10
#define AV_PIX_FMT_YUVA420P10
Definition: pixfmt.h:426
AVOption
AVOption.
Definition: opt.h:247
DeblockContext::planes
int planes
Definition: vf_deblock.c:41
AV_PIX_FMT_YUV420P10
#define AV_PIX_FMT_YUV420P10
Definition: pixfmt.h:389
inputs
static const AVFilterPad inputs[]
Definition: vf_deblock.c:398
DeblockContext::block
int block
Definition: vf_deblock.c:40
AV_PIX_FMT_YUV440P
@ AV_PIX_FMT_YUV440P
planar YUV 4:4:0 (1 Cr & Cb sample per 1x2 Y samples)
Definition: pixfmt.h:99
filter
filter_frame For filters that do not use the this method is called when a frame is pushed to the filter s input It can be called at any time except in a reentrant way If the input frame is enough to produce then the filter should push the output frames on the output link immediately As an exception to the previous rule if the input frame is enough to produce several output frames then the filter needs output only at least one per link The additional frames can be left buffered in the filter
Definition: filter_design.txt:228
AVFilter::name
const char * name
Filter name.
Definition: avfilter.h:149
video.h
AV_PIX_FMT_YUVA422P10
#define AV_PIX_FMT_YUVA422P10
Definition: pixfmt.h:427
AV_PIX_FMT_GRAY9
#define AV_PIX_FMT_GRAY9
Definition: pixfmt.h:369
AVFrame::data
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
Definition: frame.h:317
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
DeblockContext::nb_planes
int nb_planes
Definition: vf_deblock.c:54
AVFilterFormats
A list of supported formats for one end of a filter link.
Definition: formats.h:64
formats.h
av_pix_fmt_count_planes
int av_pix_fmt_count_planes(enum AVPixelFormat pix_fmt)
Definition: pixdesc.c:2580
AV_PIX_FMT_YUVA420P9
#define AV_PIX_FMT_YUVA420P9
Definition: pixfmt.h:423
AV_PIX_FMT_GBRP14
#define AV_PIX_FMT_GBRP14
Definition: pixfmt.h:407
AV_PIX_FMT_GBRAP
@ AV_PIX_FMT_GBRAP
planar GBRA 4:4:4:4 32bpp
Definition: pixfmt.h:205
DeblockContext::bpc
int bpc
Definition: vf_deblock.c:53
DeblockContext::planewidth
int planewidth[4]
Definition: vf_deblock.c:55
deblock_options
static const AVOption deblock_options[]
Definition: vf_deblock.c:385
AV_PIX_FMT_GBRP10
#define AV_PIX_FMT_GBRP10
Definition: pixfmt.h:405
AV_PIX_FMT_YUVA444P16
#define AV_PIX_FMT_YUVA444P16
Definition: pixfmt.h:433
AV_PIX_FMT_YUV422P9
#define AV_PIX_FMT_YUV422P9
Definition: pixfmt.h:387
AV_PIX_FMT_GRAY16
#define AV_PIX_FMT_GRAY16
Definition: pixfmt.h:373
NB_FILTER
@ NB_FILTER
Definition: vf_deblock.c:34
process_command
static int process_command(AVFilterContext *ctx, const char *cmd, const char *args, char *res, int res_len, int flags)
Definition: vf_deblock.c:370
AVFilterPad
A filter pad used for either input or output.
Definition: internal.h:54
AV_PIX_FMT_YUV444P10
#define AV_PIX_FMT_YUV444P10
Definition: pixfmt.h:392
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:248
query_formats
static int query_formats(AVFilterContext *ctx)
Definition: vf_deblock.c:64
FilterType
FilterType
Definition: af_adenorm.c:26
planes
static const struct @318 planes[]
AV_PIX_FMT_YUV422P16
#define AV_PIX_FMT_YUV422P16
Definition: pixfmt.h:401
ff_set_common_formats
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:580
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:79
AV_PIX_FMT_GBRAP10
#define AV_PIX_FMT_GBRAP10
Definition: pixfmt.h:409
width
#define width
s
#define s(width, name)
Definition: cbs_vp9.c:257
AV_PIX_FMT_GBRAP12
#define AV_PIX_FMT_GBRAP12
Definition: pixfmt.h:410
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:101
AV_PIX_FMT_YUV444P16
#define AV_PIX_FMT_YUV444P16
Definition: pixfmt.h:402
AV_CEIL_RSHIFT
#define AV_CEIL_RSHIFT(a, b)
Definition: common.h:58
AV_PIX_FMT_YUVA444P12
#define AV_PIX_FMT_YUVA444P12
Definition: pixfmt.h:430
AV_PIX_FMT_YUV420P9
#define AV_PIX_FMT_YUV420P9
Definition: pixfmt.h:386
AV_PIX_FMT_YUV420P16
#define AV_PIX_FMT_YUV420P16
Definition: pixfmt.h:400
ctx
AVFormatContext * ctx
Definition: movenc.c:48
AV_PIX_FMT_GRAY14
#define AV_PIX_FMT_GRAY14
Definition: pixfmt.h:372
STRONG_VFILTER
#define STRONG_VFILTER(name, type, ldiv)
Definition: vf_deblock.c:219
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:66
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:80
AV_PIX_FMT_GRAY10
#define AV_PIX_FMT_GRAY10
Definition: pixfmt.h:370
AV_PIX_FMT_GBRP16
#define AV_PIX_FMT_GBRP16
Definition: pixfmt.h:408
AVClass
Describe the class of an AVClass context structure.
Definition: log.h:66
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:537
STRONG_HFILTER
#define STRONG_HFILTER(name, type, ldiv)
Definition: vf_deblock.c:173
config_output
static int config_output(AVFilterLink *outlink)
Definition: vf_deblock.c:267
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:78
src
#define src
Definition: vp8dsp.c:255
DeblockContext::filter
int filter
Definition: vf_deblock.c:39
DeblockContext::deblockh
void(* deblockh)(uint8_t *dst, ptrdiff_t dst_linesize, int block, int ath, int bth, int gth, int dth, int max)
Definition: vf_deblock.c:58
AV_PIX_FMT_YUV422P10
#define AV_PIX_FMT_YUV422P10
Definition: pixfmt.h:390
WEAK
@ WEAK
Definition: vf_deblock.c:34
AV_PIX_FMT_GRAY8
@ AV_PIX_FMT_GRAY8
Y , 8bpp.
Definition: pixfmt.h:74
AV_PIX_FMT_GBRP9
#define AV_PIX_FMT_GBRP9
Definition: pixfmt.h:404
DeblockContext::beta
float beta
Definition: vf_deblock.c:43
DeblockContext
Definition: vf_deblock.c:36
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:116
DeblockContext::bth
int bth
Definition: vf_deblock.c:48
AVFILTER_DEFINE_CLASS
AVFILTER_DEFINE_CLASS(deblock)
AV_PIX_FMT_YUV422P12
#define AV_PIX_FMT_YUV422P12
Definition: pixfmt.h:394
WEAK_VFILTER
#define WEAK_VFILTER(name, type, ldiv)
Definition: vf_deblock.c:132
AV_PIX_FMT_YUV444P12
#define AV_PIX_FMT_YUV444P12
Definition: pixfmt.h:396
av_frame_is_writable
int av_frame_is_writable(AVFrame *frame)
Check if the frame data is writable.
Definition: frame.c:473
ff_filter_process_command
int ff_filter_process_command(AVFilterContext *ctx, const char *cmd, const char *arg, char *res, int res_len, int flags)
Generic processing of user supplied commands that are set in the same way as the filter options.
Definition: avfilter.c:842
height
#define height
FFMIN
#define FFMIN(a, b)
Definition: common.h:105
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:167
AV_PIX_FMT_YUVA444P10
#define AV_PIX_FMT_YUVA444P10
Definition: pixfmt.h:428
STRONG
@ STRONG
Definition: vf_deblock.c:34
internal.h
AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC
#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
AV_OPT_TYPE_FLOAT
@ AV_OPT_TYPE_FLOAT
Definition: opt.h:227
OFFSET
#define OFFSET(x)
Definition: vf_deblock.c:382
ff_vf_deblock
const AVFilter ff_vf_deblock
Definition: vf_deblock.c:418
DeblockContext::ath
int ath
Definition: vf_deblock.c:47
AV_PIX_FMT_GBRP12
#define AV_PIX_FMT_GBRP12
Definition: pixfmt.h:406
DeblockContext::deblockv
void(* deblockv)(uint8_t *dst, ptrdiff_t dst_linesize, int block, int ath, int bth, int gth, int dth, int max)
Definition: vf_deblock.c:60
delta
float delta
Definition: vorbis_enc_data.h:430
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:100
AVFilterPad::name
const char * name
Pad name.
Definition: internal.h:60
AV_PIX_FMT_YUV444P9
#define AV_PIX_FMT_YUV444P9
Definition: pixfmt.h:388
DeblockContext::dth
int dth
Definition: vf_deblock.c:50
AVFilter
Filter definition.
Definition: avfilter.h:145
ret
ret
Definition: filter_design.txt:187
DeblockContext::gth
int gth
Definition: vf_deblock.c:49
AV_PIX_FMT_YUVA444P9
#define AV_PIX_FMT_YUVA444P9
Definition: pixfmt.h:425
AV_PIX_FMT_YUV420P12
#define AV_PIX_FMT_YUV420P12
Definition: pixfmt.h:393
AV_PIX_FMT_YUV422P14
#define AV_PIX_FMT_YUV422P14
Definition: pixfmt.h:398
AV_PIX_FMT_NONE
@ AV_PIX_FMT_NONE
Definition: pixfmt.h:65
AV_PIX_FMT_YUVA422P12
#define AV_PIX_FMT_YUVA422P12
Definition: pixfmt.h:429
AV_OPT_TYPE_INT
@ AV_OPT_TYPE_INT
Definition: opt.h:224
avfilter.h
filter_frame
static int filter_frame(AVFilterLink *inlink, AVFrame *in)
Definition: vf_deblock.c:309
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:71
AVFilterContext
An instance of a filter.
Definition: avfilter.h:333
DeblockContext::planeheight
int planeheight[4]
Definition: vf_deblock.c:56
AV_PIX_FMT_GBRP
@ AV_PIX_FMT_GBRP
planar GBR 4:4:4 24bpp
Definition: pixfmt.h:158
AVMEDIA_TYPE_VIDEO
@ AVMEDIA_TYPE_VIDEO
Definition: avutil.h:201
DeblockContext::gamma
float gamma
Definition: vf_deblock.c:44
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:70
WEAK_HFILTER
#define WEAK_HFILTER(name, type, ldiv)
Definition: vf_deblock.c:93
AVPixFmtDescriptor
Descriptor that unambiguously describes how the bits of a pixel are stored in the up to 4 data planes...
Definition: pixdesc.h:69
alpha
static const int16_t alpha[]
Definition: ilbcdata.h:55
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:73
DeblockContext::delta
float delta
Definition: vf_deblock.c:45
FLAGS
#define FLAGS
Definition: vf_deblock.c:383
imgutils.h
flags
#define flags(name, subs,...)
Definition: cbs_av1.c:561
AVERROR_BUG
#define AVERROR_BUG
Internal bug, also see AVERROR_BUG2.
Definition: error.h:50
AVFrame::linesize
int linesize[AV_NUM_DATA_POINTERS]
For video, size in bytes of each picture line.
Definition: frame.h:334
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:72
block
The exact code depends on how similar the blocks are and how related they are to the block
Definition: filter_design.txt:207
DeblockContext::desc
const AVPixFmtDescriptor * desc
Definition: vf_deblock.c:38
AV_PIX_FMT_YUV440P12
#define AV_PIX_FMT_YUV440P12
Definition: pixfmt.h:395
AV_PIX_FMT_YUV444P14
#define AV_PIX_FMT_YUV444P14
Definition: pixfmt.h:399
AV_PIX_FMT_GRAY12
#define AV_PIX_FMT_GRAY12
Definition: pixfmt.h:371
AV_OPT_TYPE_CONST
@ AV_OPT_TYPE_CONST
Definition: opt.h:233
DeblockContext::alpha
float alpha
Definition: vf_deblock.c:42
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:166
AV_PIX_FMT_YUV420P14
#define AV_PIX_FMT_YUV420P14
Definition: pixfmt.h:397