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 "internal.h"
31 #include "video.h"
32 
34 
35 typedef struct DeblockContext {
36  const AVClass *class;
38  int filter;
39  int block;
40  int planes;
41  float alpha;
42  float beta;
43  float gamma;
44  float delta;
45 
46  int ath;
47  int bth;
48  int gth;
49  int dth;
50  int max;
51  int depth;
52  int bpc;
53  int nb_planes;
54  int planewidth[4];
55  int planeheight[4];
56 
57  void (*deblockh)(uint8_t *dst, ptrdiff_t dst_linesize, int block,
58  int ath, int bth, int gth, int dth, int max);
59  void (*deblockv)(uint8_t *dst, ptrdiff_t dst_linesize, int block,
60  int ath, int bth, int gth, int dth, int max);
62 
63 static const enum AVPixelFormat pixel_fmts[] = {
83 };
84 
85 #define WEAK_HFILTER(name, type, ldiv) \
86 static void deblockh##name##_weak(uint8_t *dstp, ptrdiff_t dst_linesize, int block, \
87  int ath, int bth, int gth, int dth, int max) \
88 { \
89  type *dst; \
90  int x; \
91  \
92  dst = (type *)dstp; \
93  dst_linesize /= ldiv; \
94  \
95  for (x = 0; x < block; x++) { \
96  int delta = dst[x] - dst[x - dst_linesize]; \
97  int A, B, C, D, a, b, c, d; \
98  \
99  if (FFABS(delta) >= ath || \
100  FFABS(dst[x - 1 * dst_linesize] - dst[x - 2 * dst_linesize]) >= bth || \
101  FFABS(dst[x + 0 * dst_linesize] - dst[x + 1 * dst_linesize]) >= gth) \
102  continue; \
103  \
104  A = dst[x - 2 * dst_linesize]; \
105  B = dst[x - 1 * dst_linesize]; \
106  C = dst[x + 0 * dst_linesize]; \
107  D = dst[x + 1 * dst_linesize]; \
108  \
109  a = A + delta / 8; \
110  b = B + delta / 2; \
111  c = C - delta / 2; \
112  d = D - delta / 8; \
113  \
114  dst[x - 2 * dst_linesize] = av_clip(a, 0, max); \
115  dst[x - 1 * dst_linesize] = av_clip(b, 0, max); \
116  dst[x + 0 * dst_linesize] = av_clip(c, 0, max); \
117  dst[x + 1 * dst_linesize] = av_clip(d, 0, max); \
118  } \
119 }
120 
121 WEAK_HFILTER(8, uint8_t, 1)
122 WEAK_HFILTER(16, uint16_t, 2)
123 
124 #define WEAK_VFILTER(name, type, ldiv) \
125 static void deblockv##name##_weak(uint8_t *dstp, ptrdiff_t dst_linesize, int block, \
126  int ath, int bth, int gth, int dth, int max) \
127 { \
128  type *dst; \
129  int y; \
130  \
131  dst = (type *)dstp; \
132  dst_linesize /= ldiv; \
133  \
134  for (y = 0; y < block; y++) { \
135  int delta = dst[0] - dst[-1]; \
136  int A, B, C, D, a, b, c, d; \
137  \
138  if (FFABS(delta) >= ath || \
139  FFABS(dst[-1] - dst[-2]) >= bth || \
140  FFABS(dst[0] - dst[1]) >= gth) \
141  continue; \
142  \
143  A = dst[-2]; \
144  B = dst[-1]; \
145  C = dst[+0]; \
146  D = dst[+1]; \
147  \
148  a = A + delta / 8; \
149  b = B + delta / 2; \
150  c = C - delta / 2; \
151  d = D - delta / 8; \
152  \
153  dst[-2] = av_clip(a, 0, max); \
154  dst[-1] = av_clip(b, 0, max); \
155  dst[+0] = av_clip(c, 0, max); \
156  dst[+1] = av_clip(d, 0, max); \
157  \
158  dst += dst_linesize; \
159  } \
160 }
161 
162 WEAK_VFILTER(8, uint8_t, 1)
163 WEAK_VFILTER(16, uint16_t, 2)
164 
165 #define STRONG_HFILTER(name, type, ldiv) \
166 static void deblockh##name##_strong(uint8_t *dstp, ptrdiff_t dst_linesize, int block,\
167  int ath, int bth, int gth, int dth, int max) \
168 { \
169  type *dst; \
170  int x; \
171  \
172  dst = (type *)dstp; \
173  dst_linesize /= ldiv; \
174  \
175  for (x = 0; x < block; x++) { \
176  int A, B, C, D, E, F, a, b, c, d, e, f; \
177  int delta = dst[x] - dst[x - dst_linesize]; \
178  \
179  if (FFABS(delta) >= ath || \
180  FFABS(dst[x - 1 * dst_linesize] - dst[x - 2 * dst_linesize]) >= bth || \
181  FFABS(dst[x + 1 * dst_linesize] - dst[x + 2 * dst_linesize]) >= gth || \
182  FFABS(dst[x + 0 * dst_linesize] - dst[x + 1 * dst_linesize]) >= dth) \
183  continue; \
184  \
185  A = dst[x - 3 * dst_linesize]; \
186  B = dst[x - 2 * dst_linesize]; \
187  C = dst[x - 1 * dst_linesize]; \
188  D = dst[x + 0 * dst_linesize]; \
189  E = dst[x + 1 * dst_linesize]; \
190  F = dst[x + 2 * dst_linesize]; \
191  \
192  a = A + delta / 8; \
193  b = B + delta / 4; \
194  c = C + delta / 2; \
195  d = D - delta / 2; \
196  e = E - delta / 4; \
197  f = F - delta / 8; \
198  \
199  dst[x - 3 * dst_linesize] = av_clip(a, 0, max); \
200  dst[x - 2 * dst_linesize] = av_clip(b, 0, max); \
201  dst[x - 1 * dst_linesize] = av_clip(c, 0, max); \
202  dst[x + 0 * dst_linesize] = av_clip(d, 0, max); \
203  dst[x + 1 * dst_linesize] = av_clip(e, 0, max); \
204  dst[x + 2 * dst_linesize] = av_clip(f, 0, max); \
205  } \
206 }
207 
208 STRONG_HFILTER(8, uint8_t, 1)
209 STRONG_HFILTER(16, uint16_t, 2)
210 
211 #define STRONG_VFILTER(name, type, ldiv) \
212 static void deblockv##name##_strong(uint8_t *dstp, ptrdiff_t dst_linesize, int block,\
213  int ath, int bth, int gth, int dth, int max) \
214 { \
215  type *dst; \
216  int y; \
217  \
218  dst = (type *)dstp; \
219  dst_linesize /= ldiv; \
220  \
221  for (y = 0; y < block; y++) { \
222  int A, B, C, D, E, F, a, b, c, d, e, f; \
223  int delta = dst[0] - dst[-1]; \
224  \
225  if (FFABS(delta) >= ath || \
226  FFABS(dst[-1] - dst[-2]) >= bth || \
227  FFABS(dst[+1] - dst[+2]) >= gth || \
228  FFABS(dst[+0] - dst[+1]) >= dth) \
229  continue; \
230  \
231  A = dst[-3]; \
232  B = dst[-2]; \
233  C = dst[-1]; \
234  D = dst[+0]; \
235  E = dst[+1]; \
236  F = dst[+2]; \
237  \
238  a = A + delta / 8; \
239  b = B + delta / 4; \
240  c = C + delta / 2; \
241  d = D - delta / 2; \
242  e = E - delta / 4; \
243  f = F - delta / 8; \
244  \
245  dst[-3] = av_clip(a, 0, max); \
246  dst[-2] = av_clip(b, 0, max); \
247  dst[-1] = av_clip(c, 0, max); \
248  dst[+0] = av_clip(d, 0, max); \
249  dst[+1] = av_clip(e, 0, max); \
250  dst[+2] = av_clip(f, 0, max); \
251  \
252  dst += dst_linesize; \
253  } \
254 }
255 
256 STRONG_VFILTER(8, uint8_t, 1)
257 STRONG_VFILTER(16, uint16_t, 2)
258 
259 static int config_output(AVFilterLink *outlink)
260 {
261  AVFilterContext *ctx = outlink->src;
262  DeblockContext *s = ctx->priv;
263  AVFilterLink *inlink = ctx->inputs[0];
264 
265  s->desc = av_pix_fmt_desc_get(outlink->format);
266  if (!s->desc)
267  return AVERROR_BUG;
268  s->nb_planes = av_pix_fmt_count_planes(outlink->format);
269  s->depth = s->desc->comp[0].depth;
270  s->bpc = (s->depth + 7) / 8;
271  s->max = (1 << s->depth) - 1;
272  s->ath = s->alpha * s->max;
273  s->bth = s->beta * s->max;
274  s->gth = s->gamma * s->max;
275  s->dth = s->delta * s->max;
276 
277  if (s->depth <= 8 && s->filter == WEAK) {
278  s->deblockh = deblockh8_weak;
279  s->deblockv = deblockv8_weak;
280  } else if (s->depth > 8 && s->filter == WEAK) {
281  s->deblockh = deblockh16_weak;
282  s->deblockv = deblockv16_weak;
283  }
284  if (s->depth <= 8 && s->filter == STRONG) {
285  s->deblockh = deblockh8_strong;
286  s->deblockv = deblockv8_strong;
287  } else if (s->depth > 8 && s->filter == STRONG) {
288  s->deblockh = deblockh16_strong;
289  s->deblockv = deblockv16_strong;
290  }
291 
292  s->planewidth[1] = s->planewidth[2] = AV_CEIL_RSHIFT(inlink->w, s->desc->log2_chroma_w);
293  s->planewidth[0] = s->planewidth[3] = inlink->w;
294 
295  s->planeheight[1] = s->planeheight[2] = AV_CEIL_RSHIFT(inlink->h, s->desc->log2_chroma_h);
296  s->planeheight[0] = s->planeheight[3] = inlink->h;
297 
298  return 0;
299 }
300 
302 {
303  AVFilterContext *ctx = inlink->dst;
304  AVFilterLink *outlink = ctx->outputs[0];
305  DeblockContext *s = ctx->priv;
306  const int block = s->block;
307  AVFrame *out;
308  int plane, x, y;
309 
310  if (av_frame_is_writable(in)) {
311  out = in;
312  } else {
313  out = ff_get_video_buffer(outlink, outlink->w, outlink->h);
314  if (!out) {
315  av_frame_free(&in);
316  return AVERROR(ENOMEM);
317  }
319  }
320 
321  for (plane = 0; plane < s->nb_planes; plane++) {
322  const int width = s->planewidth[plane];
323  const int height = s->planeheight[plane];
324  const uint8_t *src = (const uint8_t *)in->data[plane];
325  uint8_t *dst = (uint8_t *)out->data[plane];
326 
327  if (in != out)
328  av_image_copy_plane(dst, out->linesize[plane],
329  src, in->linesize[plane],
330  width * s->bpc, height);
331 
332  if (!((1 << plane) & s->planes))
333  continue;
334 
335  for (x = block; x < width; x += block)
336  s->deblockv(dst + x * s->bpc, out->linesize[plane],
337  FFMIN(block, height), s->ath, s->bth, s->gth, s->dth, s->max);
338 
339  for (y = block; y < height - block; y += block) {
340  dst += out->linesize[plane] * block;
341 
342  s->deblockh(dst, out->linesize[plane],
343  FFMIN(block, width),
344  s->ath, s->bth, s->gth, s->dth, s->max);
345 
346  for (x = block; x < width; x += block) {
347  s->deblockh(dst + x * s->bpc, out->linesize[plane],
348  FFMIN(block, width - x),
349  s->ath, s->bth, s->gth, s->dth, s->max);
350  s->deblockv(dst + x * s->bpc, out->linesize[plane],
351  FFMIN(block, height - y),
352  s->ath, s->bth, s->gth, s->dth, s->max);
353  }
354  }
355 
356  dst += out->linesize[plane] * block;
357  for (x = block; x < width; x += block)
358  s->deblockv(dst + x * s->bpc, out->linesize[plane],
359  FFMIN(block, height - y), s->ath, s->bth, s->gth, s->dth, s->max);
360 
361  }
362 
363  if (in != out)
364  av_frame_free(&in);
365  return ff_filter_frame(outlink, out);
366 }
367 
368 static int process_command(AVFilterContext *ctx, const char *cmd, const char *args,
369  char *res, int res_len, int flags)
370 {
371  int ret;
372 
373  ret = ff_filter_process_command(ctx, cmd, args, res, res_len, flags);
374  if (ret < 0)
375  return ret;
376 
377  return config_output(ctx->outputs[0]);
378 }
379 
380 #define OFFSET(x) offsetof(DeblockContext, x)
381 #define FLAGS AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_RUNTIME_PARAM
382 
383 static const AVOption deblock_options[] = {
384  { "filter", "set type of filter", OFFSET(filter), AV_OPT_TYPE_INT, {.i64=STRONG},0, 1, FLAGS, .unit = "filter" },
385  { "weak", 0, 0, AV_OPT_TYPE_CONST, {.i64=WEAK}, 0, 0, FLAGS, .unit = "filter" },
386  { "strong", 0, 0, AV_OPT_TYPE_CONST, {.i64=STRONG},0, 0, FLAGS, .unit = "filter" },
387  { "block", "set size of block", OFFSET(block), AV_OPT_TYPE_INT, {.i64=8}, 4, 512, FLAGS },
388  { "alpha", "set 1st detection threshold", OFFSET(alpha), AV_OPT_TYPE_FLOAT, {.dbl=.098}, 0, 1, FLAGS },
389  { "beta", "set 2nd detection threshold", OFFSET(beta), AV_OPT_TYPE_FLOAT, {.dbl=.05}, 0, 1, FLAGS },
390  { "gamma", "set 3rd detection threshold", OFFSET(gamma), AV_OPT_TYPE_FLOAT, {.dbl=.05}, 0, 1, FLAGS },
391  { "delta", "set 4th detection threshold", OFFSET(delta), AV_OPT_TYPE_FLOAT, {.dbl=.05}, 0, 1, FLAGS },
392  { "planes", "set planes to filter", OFFSET(planes), AV_OPT_TYPE_INT, {.i64=15}, 0, 15, FLAGS },
393  { NULL },
394 };
395 
396 static const AVFilterPad inputs[] = {
397  {
398  .name = "default",
399  .type = AVMEDIA_TYPE_VIDEO,
400  .filter_frame = filter_frame,
401  },
402 };
403 
404 static const AVFilterPad outputs[] = {
405  {
406  .name = "default",
407  .type = AVMEDIA_TYPE_VIDEO,
408  .config_props = config_output,
409  },
410 };
411 
412 AVFILTER_DEFINE_CLASS(deblock);
413 
415  .name = "deblock",
416  .description = NULL_IF_CONFIG_SMALL("Deblock video."),
417  .priv_size = sizeof(DeblockContext),
418  .priv_class = &deblock_class,
423  .process_command = process_command,
424 };
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
AV_PIX_FMT_GBRAP16
#define AV_PIX_FMT_GBRAP16
Definition: pixfmt.h:505
AVPixelFormat
AVPixelFormat
Pixel format.
Definition: pixfmt.h:71
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:51
out
FILE * out
Definition: movenc.c:54
DeblockContext::max
int max
Definition: vf_deblock.c:50
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
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_frame_free
void av_frame_free(AVFrame **frame)
Free the frame and any dynamically allocated objects in it, e.g.
Definition: frame.c:100
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
outputs
static const AVFilterPad outputs[]
Definition: vf_deblock.c:404
AV_PIX_FMT_YUVA420P10
#define AV_PIX_FMT_YUVA420P10
Definition: pixfmt.h:520
AVOption
AVOption.
Definition: opt.h:251
DeblockContext::planes
int planes
Definition: vf_deblock.c:40
AV_PIX_FMT_YUV420P10
#define AV_PIX_FMT_YUV420P10
Definition: pixfmt.h:482
inputs
static const AVFilterPad inputs[]
Definition: vf_deblock.c:396
DeblockContext::block
int block
Definition: vf_deblock.c:39
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
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:170
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
DeblockContext::nb_planes
int nb_planes
Definition: vf_deblock.c:53
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
AV_PIX_FMT_GBRP14
#define AV_PIX_FMT_GBRP14
Definition: pixfmt.h:500
AV_PIX_FMT_GBRAP
@ AV_PIX_FMT_GBRAP
planar GBRA 4:4:4:4 32bpp
Definition: pixfmt.h:212
DeblockContext::bpc
int bpc
Definition: vf_deblock.c:52
DeblockContext::planewidth
int planewidth[4]
Definition: vf_deblock.c:54
deblock_options
static const AVOption deblock_options[]
Definition: vf_deblock.c:383
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
AV_PIX_FMT_YUV422P9
#define AV_PIX_FMT_YUV422P9
Definition: pixfmt.h:480
AV_PIX_FMT_GRAY16
#define AV_PIX_FMT_GRAY16
Definition: pixfmt.h:466
NB_FILTER
@ NB_FILTER
Definition: vf_deblock.c:33
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:368
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
FilterType
FilterType
Definition: af_adenorm.c:26
AV_PIX_FMT_YUV422P16
#define AV_PIX_FMT_YUV422P16
Definition: pixfmt.h:494
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
width
#define width
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:58
AV_PIX_FMT_YUVA444P12
#define AV_PIX_FMT_YUVA444P12
Definition: pixfmt.h:524
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
STRONG_VFILTER
#define STRONG_VFILTER(name, type, ldiv)
Definition: vf_deblock.c:211
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
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
STRONG_HFILTER
#define STRONG_HFILTER(name, type, ldiv)
Definition: vf_deblock.c:165
config_output
static int config_output(AVFilterLink *outlink)
Definition: vf_deblock.c:259
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
DeblockContext::filter
int filter
Definition: vf_deblock.c:38
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:57
pixel_fmts
static enum AVPixelFormat pixel_fmts[]
Definition: vf_deblock.c:63
AV_PIX_FMT_YUV422P10
#define AV_PIX_FMT_YUV422P10
Definition: pixfmt.h:483
WEAK
@ WEAK
Definition: vf_deblock.c:33
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
DeblockContext::beta
float beta
Definition: vf_deblock.c:42
DeblockContext
Definition: vf_deblock.c:35
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
DeblockContext::bth
int bth
Definition: vf_deblock.c:47
AVFILTER_DEFINE_CLASS
AVFILTER_DEFINE_CLASS(deblock)
AV_PIX_FMT_YUV422P12
#define AV_PIX_FMT_YUV422P12
Definition: pixfmt.h:487
WEAK_VFILTER
#define WEAK_VFILTER(name, type, ldiv)
Definition: vf_deblock.c:124
AV_PIX_FMT_YUV444P12
#define AV_PIX_FMT_YUV444P12
Definition: pixfmt.h:489
av_frame_is_writable
int av_frame_is_writable(AVFrame *frame)
Check if the frame data is writable.
Definition: frame.c:666
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:879
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:174
AV_PIX_FMT_YUVA444P10
#define AV_PIX_FMT_YUVA444P10
Definition: pixfmt.h:522
STRONG
@ STRONG
Definition: vf_deblock.c:33
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:147
AV_OPT_TYPE_FLOAT
@ AV_OPT_TYPE_FLOAT
Definition: opt.h:228
OFFSET
#define OFFSET(x)
Definition: vf_deblock.c:380
ff_vf_deblock
const AVFilter ff_vf_deblock
Definition: vf_deblock.c:414
DeblockContext::ath
int ath
Definition: vf_deblock.c:46
AV_PIX_FMT_GBRP12
#define AV_PIX_FMT_GBRP12
Definition: pixfmt.h:499
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:59
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:107
AVFilterPad::name
const char * name
Pad name.
Definition: internal.h:39
AV_PIX_FMT_YUV444P9
#define AV_PIX_FMT_YUV444P9
Definition: pixfmt.h:481
DeblockContext::dth
int dth
Definition: vf_deblock.c:49
AVFilter
Filter definition.
Definition: avfilter.h:166
ret
ret
Definition: filter_design.txt:187
DeblockContext::gth
int gth
Definition: vf_deblock.c:48
AV_PIX_FMT_YUVA444P9
#define AV_PIX_FMT_YUVA444P9
Definition: pixfmt.h:519
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
AV_PIX_FMT_NONE
@ AV_PIX_FMT_NONE
Definition: pixfmt.h:72
AV_PIX_FMT_YUVA422P12
#define AV_PIX_FMT_YUVA422P12
Definition: pixfmt.h:523
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:301
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
DeblockContext::planeheight
int planeheight[4]
Definition: vf_deblock.c:55
AV_PIX_FMT_GBRP
@ AV_PIX_FMT_GBRP
planar GBR 4:4:4 24bpp
Definition: pixfmt.h:165
AVMEDIA_TYPE_VIDEO
@ AVMEDIA_TYPE_VIDEO
Definition: avutil.h:201
DeblockContext::gamma
float gamma
Definition: vf_deblock.c:43
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
WEAK_HFILTER
#define WEAK_HFILTER(name, type, ldiv)
Definition: vf_deblock.c:85
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:183
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:80
planes
static const struct @377 planes[]
DeblockContext::delta
float delta
Definition: vf_deblock.c:44
FLAGS
#define FLAGS
Definition: vf_deblock.c:381
imgutils.h
flags
#define flags(name, subs,...)
Definition: cbs_av1.c:474
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: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
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:37
AV_PIX_FMT_YUV440P12
#define AV_PIX_FMT_YUV440P12
Definition: pixfmt.h:488
AV_PIX_FMT_YUV444P14
#define AV_PIX_FMT_YUV444P14
Definition: pixfmt.h:492
AV_PIX_FMT_GRAY12
#define AV_PIX_FMT_GRAY12
Definition: pixfmt.h:464
AV_OPT_TYPE_CONST
@ AV_OPT_TYPE_CONST
Definition: opt.h:234
DeblockContext::alpha
float alpha
Definition: vf_deblock.c:41
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