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 
34 enum FilterType { WEAK, STRONG, NB_FILTER };
35 
36 typedef struct DeblockContext {
37  const AVClass *class;
38  const AVPixFmtDescriptor *desc;
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);
62 } DeblockContext;
63 
64 static const enum AVPixelFormat pixel_fmts[] = {
65  AV_PIX_FMT_YUVA444P, AV_PIX_FMT_YUV444P, AV_PIX_FMT_YUV440P,
66  AV_PIX_FMT_YUVJ444P, AV_PIX_FMT_YUVJ440P,
67  AV_PIX_FMT_YUVA422P, AV_PIX_FMT_YUV422P, AV_PIX_FMT_YUVA420P, AV_PIX_FMT_YUV420P,
68  AV_PIX_FMT_YUVJ422P, AV_PIX_FMT_YUVJ420P,
69  AV_PIX_FMT_YUVJ411P, AV_PIX_FMT_YUV411P, AV_PIX_FMT_YUV410P,
70  AV_PIX_FMT_YUV420P9, AV_PIX_FMT_YUV422P9, AV_PIX_FMT_YUV444P9,
71  AV_PIX_FMT_YUV420P10, AV_PIX_FMT_YUV422P10, AV_PIX_FMT_YUV444P10,
72  AV_PIX_FMT_YUV420P12, AV_PIX_FMT_YUV422P12, AV_PIX_FMT_YUV444P12, AV_PIX_FMT_YUV440P12,
73  AV_PIX_FMT_YUV420P14, AV_PIX_FMT_YUV422P14, AV_PIX_FMT_YUV444P14,
74  AV_PIX_FMT_YUV420P16, AV_PIX_FMT_YUV422P16, AV_PIX_FMT_YUV444P16,
75  AV_PIX_FMT_YUVA420P9, AV_PIX_FMT_YUVA422P9, AV_PIX_FMT_YUVA444P9,
76  AV_PIX_FMT_YUVA420P10, AV_PIX_FMT_YUVA422P10, AV_PIX_FMT_YUVA444P10,
77  AV_PIX_FMT_YUVA422P12, AV_PIX_FMT_YUVA444P12,
78  AV_PIX_FMT_YUVA420P16, AV_PIX_FMT_YUVA422P16, AV_PIX_FMT_YUVA444P16,
79  AV_PIX_FMT_GBRP, AV_PIX_FMT_GBRP9, AV_PIX_FMT_GBRP10,
80  AV_PIX_FMT_GBRP12, AV_PIX_FMT_GBRP14, AV_PIX_FMT_GBRP16,
81  AV_PIX_FMT_GBRAP, AV_PIX_FMT_GBRAP10, AV_PIX_FMT_GBRAP12, AV_PIX_FMT_GBRAP16,
82  AV_PIX_FMT_GRAY8, AV_PIX_FMT_GRAY9, AV_PIX_FMT_GRAY10, AV_PIX_FMT_GRAY12, AV_PIX_FMT_GRAY14, AV_PIX_FMT_GRAY16,
83  AV_PIX_FMT_NONE
84 };
85 
86 #define WEAK_HFILTER(name, type, ldiv) \
87 static void deblockh##name##_weak(uint8_t *dstp, ptrdiff_t dst_linesize, int block, \
88  int ath, int bth, int gth, int dth, int max) \
89 { \
90  type *dst; \
91  int x; \
92  \
93  dst = (type *)dstp; \
94  dst_linesize /= ldiv; \
95  \
96  for (x = 0; x < block; x++) { \
97  int delta = dst[x] - dst[x - dst_linesize]; \
98  int A, B, C, D, a, b, c, d; \
99  \
100  if (FFABS(delta) >= ath || \
101  FFABS(dst[x - 1 * dst_linesize] - dst[x - 2 * dst_linesize]) >= bth || \
102  FFABS(dst[x + 0 * dst_linesize] - dst[x + 1 * dst_linesize]) >= gth) \
103  continue; \
104  \
105  A = dst[x - 2 * dst_linesize]; \
106  B = dst[x - 1 * dst_linesize]; \
107  C = dst[x + 0 * dst_linesize]; \
108  D = dst[x + 1 * dst_linesize]; \
109  \
110  a = A + delta / 8; \
111  b = B + delta / 2; \
112  c = C - delta / 2; \
113  d = D - delta / 8; \
114  \
115  dst[x - 2 * dst_linesize] = av_clip(a, 0, max); \
116  dst[x - 1 * dst_linesize] = av_clip(b, 0, max); \
117  dst[x + 0 * dst_linesize] = av_clip(c, 0, max); \
118  dst[x + 1 * dst_linesize] = av_clip(d, 0, max); \
119  } \
120 }
121 
122 WEAK_HFILTER(8, uint8_t, 1)
123 WEAK_HFILTER(16, uint16_t, 2)
124 
125 #define WEAK_VFILTER(name, type, ldiv) \
126 static void deblockv##name##_weak(uint8_t *dstp, ptrdiff_t dst_linesize, int block, \
127  int ath, int bth, int gth, int dth, int max) \
128 { \
129  type *dst; \
130  int y; \
131  \
132  dst = (type *)dstp; \
133  dst_linesize /= ldiv; \
134  \
135  for (y = 0; y < block; y++) { \
136  int delta = dst[0] - dst[-1]; \
137  int A, B, C, D, a, b, c, d; \
138  \
139  if (FFABS(delta) >= ath || \
140  FFABS(dst[-1] - dst[-2]) >= bth || \
141  FFABS(dst[0] - dst[1]) >= gth) \
142  continue; \
143  \
144  A = dst[-2]; \
145  B = dst[-1]; \
146  C = dst[+0]; \
147  D = dst[+1]; \
148  \
149  a = A + delta / 8; \
150  b = B + delta / 2; \
151  c = C - delta / 2; \
152  d = D - delta / 8; \
153  \
154  dst[-2] = av_clip(a, 0, max); \
155  dst[-1] = av_clip(b, 0, max); \
156  dst[+0] = av_clip(c, 0, max); \
157  dst[+1] = av_clip(d, 0, max); \
158  \
159  dst += dst_linesize; \
160  } \
161 }
162 
163 WEAK_VFILTER(8, uint8_t, 1)
164 WEAK_VFILTER(16, uint16_t, 2)
165 
166 #define STRONG_HFILTER(name, type, ldiv) \
167 static void deblockh##name##_strong(uint8_t *dstp, ptrdiff_t dst_linesize, int block,\
168  int ath, int bth, int gth, int dth, int max) \
169 { \
170  type *dst; \
171  int x; \
172  \
173  dst = (type *)dstp; \
174  dst_linesize /= ldiv; \
175  \
176  for (x = 0; x < block; x++) { \
177  int A, B, C, D, E, F, a, b, c, d, e, f; \
178  int delta = dst[x] - dst[x - dst_linesize]; \
179  \
180  if (FFABS(delta) >= ath || \
181  FFABS(dst[x - 1 * dst_linesize] - dst[x - 2 * dst_linesize]) >= bth || \
182  FFABS(dst[x + 1 * dst_linesize] - dst[x + 2 * dst_linesize]) >= gth || \
183  FFABS(dst[x + 0 * dst_linesize] - dst[x + 1 * dst_linesize]) >= dth) \
184  continue; \
185  \
186  A = dst[x - 3 * dst_linesize]; \
187  B = dst[x - 2 * dst_linesize]; \
188  C = dst[x - 1 * dst_linesize]; \
189  D = dst[x + 0 * dst_linesize]; \
190  E = dst[x + 1 * dst_linesize]; \
191  F = dst[x + 2 * dst_linesize]; \
192  \
193  a = A + delta / 8; \
194  b = B + delta / 4; \
195  c = C + delta / 2; \
196  d = D - delta / 2; \
197  e = E - delta / 4; \
198  f = F - delta / 8; \
199  \
200  dst[x - 3 * dst_linesize] = av_clip(a, 0, max); \
201  dst[x - 2 * dst_linesize] = av_clip(b, 0, max); \
202  dst[x - 1 * dst_linesize] = av_clip(c, 0, max); \
203  dst[x + 0 * dst_linesize] = av_clip(d, 0, max); \
204  dst[x + 1 * dst_linesize] = av_clip(e, 0, max); \
205  dst[x + 2 * dst_linesize] = av_clip(f, 0, max); \
206  } \
207 }
208 
209 STRONG_HFILTER(8, uint8_t, 1)
210 STRONG_HFILTER(16, uint16_t, 2)
211 
212 #define STRONG_VFILTER(name, type, ldiv) \
213 static void deblockv##name##_strong(uint8_t *dstp, ptrdiff_t dst_linesize, int block,\
214  int ath, int bth, int gth, int dth, int max) \
215 { \
216  type *dst; \
217  int y; \
218  \
219  dst = (type *)dstp; \
220  dst_linesize /= ldiv; \
221  \
222  for (y = 0; y < block; y++) { \
223  int A, B, C, D, E, F, a, b, c, d, e, f; \
224  int delta = dst[0] - dst[-1]; \
225  \
226  if (FFABS(delta) >= ath || \
227  FFABS(dst[-1] - dst[-2]) >= bth || \
228  FFABS(dst[+1] - dst[+2]) >= gth || \
229  FFABS(dst[+0] - dst[+1]) >= dth) \
230  continue; \
231  \
232  A = dst[-3]; \
233  B = dst[-2]; \
234  C = dst[-1]; \
235  D = dst[+0]; \
236  E = dst[+1]; \
237  F = dst[+2]; \
238  \
239  a = A + delta / 8; \
240  b = B + delta / 4; \
241  c = C + delta / 2; \
242  d = D - delta / 2; \
243  e = E - delta / 4; \
244  f = F - delta / 8; \
245  \
246  dst[-3] = av_clip(a, 0, max); \
247  dst[-2] = av_clip(b, 0, max); \
248  dst[-1] = av_clip(c, 0, max); \
249  dst[+0] = av_clip(d, 0, max); \
250  dst[+1] = av_clip(e, 0, max); \
251  dst[+2] = av_clip(f, 0, max); \
252  \
253  dst += dst_linesize; \
254  } \
255 }
256 
257 STRONG_VFILTER(8, uint8_t, 1)
258 STRONG_VFILTER(16, uint16_t, 2)
259 
260 static int config_output(AVFilterLink *outlink)
261 {
262  AVFilterContext *ctx = outlink->src;
263  DeblockContext *s = ctx->priv;
264  AVFilterLink *inlink = ctx->inputs[0];
265 
266  s->desc = av_pix_fmt_desc_get(outlink->format);
267  if (!s->desc)
268  return AVERROR_BUG;
269  s->nb_planes = av_pix_fmt_count_planes(outlink->format);
270  s->depth = s->desc->comp[0].depth;
271  s->bpc = (s->depth + 7) / 8;
272  s->max = (1 << s->depth) - 1;
273  s->ath = s->alpha * s->max;
274  s->bth = s->beta * s->max;
275  s->gth = s->gamma * s->max;
276  s->dth = s->delta * s->max;
277 
278  if (s->depth <= 8 && s->filter == WEAK) {
279  s->deblockh = deblockh8_weak;
280  s->deblockv = deblockv8_weak;
281  } else if (s->depth > 8 && s->filter == WEAK) {
282  s->deblockh = deblockh16_weak;
283  s->deblockv = deblockv16_weak;
284  }
285  if (s->depth <= 8 && s->filter == STRONG) {
286  s->deblockh = deblockh8_strong;
287  s->deblockv = deblockv8_strong;
288  } else if (s->depth > 8 && s->filter == STRONG) {
289  s->deblockh = deblockh16_strong;
290  s->deblockv = deblockv16_strong;
291  }
292 
293  s->planewidth[1] = s->planewidth[2] = AV_CEIL_RSHIFT(inlink->w, s->desc->log2_chroma_w);
294  s->planewidth[0] = s->planewidth[3] = inlink->w;
295 
296  s->planeheight[1] = s->planeheight[2] = AV_CEIL_RSHIFT(inlink->h, s->desc->log2_chroma_h);
297  s->planeheight[0] = s->planeheight[3] = inlink->h;
298 
299  return 0;
300 }
301 
302 static int filter_frame(AVFilterLink *inlink, AVFrame *in)
303 {
304  AVFilterContext *ctx = inlink->dst;
305  AVFilterLink *outlink = ctx->outputs[0];
306  DeblockContext *s = ctx->priv;
307  const int block = s->block;
308  AVFrame *out;
309  int plane, x, y;
310 
311  if (av_frame_is_writable(in)) {
312  out = in;
313  } else {
314  out = ff_get_video_buffer(outlink, outlink->w, outlink->h);
315  if (!out) {
316  av_frame_free(&in);
317  return AVERROR(ENOMEM);
318  }
319  av_frame_copy_props(out, in);
320  }
321 
322  for (plane = 0; plane < s->nb_planes; plane++) {
323  const int width = s->planewidth[plane];
324  const int height = s->planeheight[plane];
325  const uint8_t *src = (const uint8_t *)in->data[plane];
326  uint8_t *dst = (uint8_t *)out->data[plane];
327 
328  if (in != out)
329  av_image_copy_plane(dst, out->linesize[plane],
330  src, in->linesize[plane],
331  width * s->bpc, height);
332 
333  if (!((1 << plane) & s->planes))
334  continue;
335 
336  for (x = block; x < width; x += block)
337  s->deblockv(dst + x * s->bpc, out->linesize[plane],
338  FFMIN(block, height), s->ath, s->bth, s->gth, s->dth, s->max);
339 
340  for (y = block; y < height - block; y += block) {
341  dst += out->linesize[plane] * block;
342 
343  s->deblockh(dst, out->linesize[plane],
344  FFMIN(block, width),
345  s->ath, s->bth, s->gth, s->dth, s->max);
346 
347  for (x = block; x < width; x += block) {
348  s->deblockh(dst + x * s->bpc, out->linesize[plane],
349  FFMIN(block, width - x),
350  s->ath, s->bth, s->gth, s->dth, s->max);
351  s->deblockv(dst + x * s->bpc, out->linesize[plane],
352  FFMIN(block, height - y),
353  s->ath, s->bth, s->gth, s->dth, s->max);
354  }
355  }
356 
357  dst += out->linesize[plane] * block;
358  for (x = block; x < width; x += block)
359  s->deblockv(dst + x * s->bpc, out->linesize[plane],
360  FFMIN(block, height - y), s->ath, s->bth, s->gth, s->dth, s->max);
361 
362  }
363 
364  if (in != out)
365  av_frame_free(&in);
366  return ff_filter_frame(outlink, out);
367 }
368 
369 static int process_command(AVFilterContext *ctx, const char *cmd, const char *args,
370  char *res, int res_len, int flags)
371 {
372  int ret;
373 
374  ret = ff_filter_process_command(ctx, cmd, args, res, res_len, flags);
375  if (ret < 0)
376  return ret;
377 
378  return config_output(ctx->outputs[0]);
379 }
380 
381 #define OFFSET(x) offsetof(DeblockContext, x)
382 #define FLAGS AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_RUNTIME_PARAM
383 
384 static const AVOption deblock_options[] = {
385  { "filter", "set type of filter", OFFSET(filter), AV_OPT_TYPE_INT, {.i64=STRONG},0, 1, FLAGS, "filter" },
386  { "weak", 0, 0, AV_OPT_TYPE_CONST, {.i64=WEAK}, 0, 0, FLAGS, "filter" },
387  { "strong", 0, 0, AV_OPT_TYPE_CONST, {.i64=STRONG},0, 0, FLAGS, "filter" },
388  { "block", "set size of block", OFFSET(block), AV_OPT_TYPE_INT, {.i64=8}, 4, 512, FLAGS },
389  { "alpha", "set 1st detection threshold", OFFSET(alpha), AV_OPT_TYPE_FLOAT, {.dbl=.098}, 0, 1, FLAGS },
390  { "beta", "set 2nd detection threshold", OFFSET(beta), AV_OPT_TYPE_FLOAT, {.dbl=.05}, 0, 1, FLAGS },
391  { "gamma", "set 3rd detection threshold", OFFSET(gamma), AV_OPT_TYPE_FLOAT, {.dbl=.05}, 0, 1, FLAGS },
392  { "delta", "set 4th detection threshold", OFFSET(delta), AV_OPT_TYPE_FLOAT, {.dbl=.05}, 0, 1, FLAGS },
393  { "planes", "set planes to filter", OFFSET(planes), AV_OPT_TYPE_INT, {.i64=15}, 0, 15, FLAGS },
394  { NULL },
395 };
396 
397 static const AVFilterPad inputs[] = {
398  {
399  .name = "default",
400  .type = AVMEDIA_TYPE_VIDEO,
401  .filter_frame = filter_frame,
402  },
403 };
404 
405 static const AVFilterPad outputs[] = {
406  {
407  .name = "default",
408  .type = AVMEDIA_TYPE_VIDEO,
409  .config_props = config_output,
410  },
411 };
412 
413 AVFILTER_DEFINE_CLASS(deblock);
414 
415 const AVFilter ff_vf_deblock = {
416  .name = "deblock",
417  .description = NULL_IF_CONFIG_SMALL("Deblock video."),
418  .priv_size = sizeof(DeblockContext),
419  .priv_class = &deblock_class,
420  FILTER_INPUTS(inputs),
421  FILTER_OUTPUTS(outputs),
422  FILTER_PIXFMTS_ARRAY(pixel_fmts),
423  .flags = AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC,
424  .process_command = process_command,
425 };
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:101
AV_PIX_FMT_YUVA422P16
#define AV_PIX_FMT_YUVA422P16
Definition: pixfmt.h:502
AV_PIX_FMT_GBRAP16
#define AV_PIX_FMT_GBRAP16
Definition: pixfmt.h:481
AVPixelFormat
AVPixelFormat
Pixel format.
Definition: pixfmt.h:64
planes
static const struct @346 planes[]
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
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:969
av_pix_fmt_desc_get
const AVPixFmtDescriptor * av_pix_fmt_desc_get(enum AVPixelFormat pix_fmt)
Definition: pixdesc.c:2888
FILTER_PIXFMTS_ARRAY
#define FILTER_PIXFMTS_ARRAY(array)
Definition: internal.h:174
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:99
AV_PIX_FMT_YUVA422P9
#define AV_PIX_FMT_YUVA422P9
Definition: pixfmt.h:494
AVFrame
This structure describes decoded (raw) audio or video data.
Definition: frame.h:330
pixdesc.h
AV_PIX_FMT_YUVA420P16
#define AV_PIX_FMT_YUVA420P16
Definition: pixfmt.h:501
outputs
static const AVFilterPad outputs[]
Definition: vf_deblock.c:405
AV_PIX_FMT_YUVA420P10
#define AV_PIX_FMT_YUVA420P10
Definition: pixfmt.h:496
AVOption
AVOption.
Definition: opt.h:251
DeblockContext::planes
int planes
Definition: vf_deblock.c:41
AV_PIX_FMT_YUV420P10
#define AV_PIX_FMT_YUV420P10
Definition: pixfmt.h:459
inputs
static const AVFilterPad inputs[]
Definition: vf_deblock.c:397
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:165
video.h
AV_PIX_FMT_YUVA422P10
#define AV_PIX_FMT_YUVA422P10
Definition: pixfmt.h:497
AV_PIX_FMT_GRAY9
#define AV_PIX_FMT_GRAY9
Definition: pixfmt.h:439
AVFrame::data
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
Definition: frame.h:351
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
formats.h
av_pix_fmt_count_planes
int av_pix_fmt_count_planes(enum AVPixelFormat pix_fmt)
Definition: pixdesc.c:2928
AV_PIX_FMT_YUVA420P9
#define AV_PIX_FMT_YUVA420P9
Definition: pixfmt.h:493
AV_PIX_FMT_GBRP14
#define AV_PIX_FMT_GBRP14
Definition: pixfmt.h:477
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:384
AV_PIX_FMT_GBRP10
#define AV_PIX_FMT_GBRP10
Definition: pixfmt.h:475
AV_PIX_FMT_YUVA444P16
#define AV_PIX_FMT_YUVA444P16
Definition: pixfmt.h:503
AV_PIX_FMT_YUV422P9
#define AV_PIX_FMT_YUV422P9
Definition: pixfmt.h:457
AV_PIX_FMT_GRAY16
#define AV_PIX_FMT_GRAY16
Definition: pixfmt.h:443
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:369
AVFilterPad
A filter pad used for either input or output.
Definition: internal.h:49
AV_PIX_FMT_YUV444P10
#define AV_PIX_FMT_YUV444P10
Definition: pixfmt.h:462
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:276
FilterType
FilterType
Definition: af_adenorm.c:26
AV_PIX_FMT_YUV422P16
#define AV_PIX_FMT_YUV422P16
Definition: pixfmt.h:471
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:479
width
#define width
s
#define s(width, name)
Definition: cbs_vp9.c:256
AV_PIX_FMT_GBRAP12
#define AV_PIX_FMT_GBRAP12
Definition: pixfmt.h:480
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:472
AV_CEIL_RSHIFT
#define AV_CEIL_RSHIFT(a, b)
Definition: common.h:50
AV_PIX_FMT_YUVA444P12
#define AV_PIX_FMT_YUVA444P12
Definition: pixfmt.h:500
AV_PIX_FMT_YUV420P9
#define AV_PIX_FMT_YUV420P9
Definition: pixfmt.h:456
AV_PIX_FMT_YUV420P16
#define AV_PIX_FMT_YUV420P16
Definition: pixfmt.h:470
ctx
AVFormatContext * ctx
Definition: movenc.c:48
AV_PIX_FMT_GRAY14
#define AV_PIX_FMT_GRAY14
Definition: pixfmt.h:442
STRONG_VFILTER
#define STRONG_VFILTER(name, type, ldiv)
Definition: vf_deblock.c:212
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
FILTER_INPUTS
#define FILTER_INPUTS(array)
Definition: internal.h:194
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:440
AV_PIX_FMT_GBRP16
#define AV_PIX_FMT_GBRP16
Definition: pixfmt.h:478
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:594
STRONG_HFILTER
#define STRONG_HFILTER(name, type, ldiv)
Definition: vf_deblock.c:166
config_output
static int config_output(AVFilterLink *outlink)
Definition: vf_deblock.c:260
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
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
pixel_fmts
static enum AVPixelFormat pixel_fmts[]
Definition: vf_deblock.c:64
AV_PIX_FMT_YUV422P10
#define AV_PIX_FMT_YUV422P10
Definition: pixfmt.h:460
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:474
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:115
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:464
WEAK_VFILTER
#define WEAK_VFILTER(name, type, ldiv)
Definition: vf_deblock.c:125
AV_PIX_FMT_YUV444P12
#define AV_PIX_FMT_YUV444P12
Definition: pixfmt.h:466
av_frame_is_writable
int av_frame_is_writable(AVFrame *frame)
Check if the frame data is writable.
Definition: frame.c:524
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
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:498
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:142
AV_OPT_TYPE_FLOAT
@ AV_OPT_TYPE_FLOAT
Definition: opt.h:228
OFFSET
#define OFFSET(x)
Definition: vf_deblock.c:381
ff_vf_deblock
const AVFilter ff_vf_deblock
Definition: vf_deblock.c:415
DeblockContext::ath
int ath
Definition: vf_deblock.c:47
AV_PIX_FMT_GBRP12
#define AV_PIX_FMT_GBRP12
Definition: pixfmt.h:476
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
FFMIN
#define FFMIN(a, b)
Definition: macros.h:49
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:55
AV_PIX_FMT_YUV444P9
#define AV_PIX_FMT_YUV444P9
Definition: pixfmt.h:458
DeblockContext::dth
int dth
Definition: vf_deblock.c:50
AVFilter
Filter definition.
Definition: avfilter.h:161
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:495
AV_PIX_FMT_YUV420P12
#define AV_PIX_FMT_YUV420P12
Definition: pixfmt.h:463
AV_PIX_FMT_YUV422P14
#define AV_PIX_FMT_YUV422P14
Definition: pixfmt.h:468
AV_PIX_FMT_NONE
@ AV_PIX_FMT_NONE
Definition: pixfmt.h:65
AV_PIX_FMT_YUVA422P12
#define AV_PIX_FMT_YUVA422P12
Definition: pixfmt.h:499
AV_OPT_TYPE_INT
@ AV_OPT_TYPE_INT
Definition: opt.h:225
avfilter.h
filter_frame
static int filter_frame(AVFilterLink *inlink, AVFrame *in)
Definition: vf_deblock.c:302
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:392
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:86
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
FILTER_OUTPUTS
#define FILTER_OUTPUTS(array)
Definition: internal.h:195
src
INIT_CLIP pixel * src
Definition: h264pred_template.c:418
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:382
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:52
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:375
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:465
AV_PIX_FMT_YUV444P14
#define AV_PIX_FMT_YUV444P14
Definition: pixfmt.h:469
AV_PIX_FMT_GRAY12
#define AV_PIX_FMT_GRAY12
Definition: pixfmt.h:441
AV_OPT_TYPE_CONST
@ AV_OPT_TYPE_CONST
Definition: opt.h:234
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:467
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