FFmpeg
vf_sab.c
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1 /*
2  * Copyright (c) 2002 Michael Niedermayer <michaelni@gmx.at>
3  *
4  * This file is part of FFmpeg.
5  *
6  * FFmpeg is free software; you can redistribute it and/or modify
7  * it under the terms of the GNU General Public License as published by
8  * the Free Software Foundation; either version 2 of the License, or
9  * (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
14  * GNU General Public License for more details.
15  *
16  * You should have received a copy of the GNU General Public License along
17  * with FFmpeg; if not, write to the Free Software Foundation, Inc.,
18  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
19  */
20 
21 /**
22  * @file
23  * Shape Adaptive Blur filter, ported from MPlayer libmpcodecs/vf_sab.c
24  */
25 
26 #include "libavutil/mem.h"
27 #include "libavutil/opt.h"
28 #include "libavutil/pixdesc.h"
29 #include "libswscale/swscale.h"
30 
31 #include "avfilter.h"
32 #include "internal.h"
33 #include "video.h"
34 
35 typedef struct FilterParam {
36  float radius;
38  float strength;
39  float quality;
41  uint8_t *pre_filter_buf;
45  int *dist_coeff;
46 #define COLOR_DIFF_COEFF_SIZE 512
48 } FilterParam;
49 
50 typedef struct SabContext {
51  const AVClass *class;
54  int hsub;
55  int vsub;
56  unsigned int sws_flags;
57 } SabContext;
58 
59 static const enum AVPixelFormat pix_fmts[] = {
66 };
67 
68 #define RADIUS_MIN 0.1
69 #define RADIUS_MAX 4.0
70 
71 #define PRE_FILTER_RADIUS_MIN 0.1
72 #define PRE_FILTER_RADIUS_MAX 2.0
73 
74 #define STRENGTH_MIN 0.1
75 #define STRENGTH_MAX 100.0
76 
77 #define OFFSET(x) offsetof(SabContext, x)
78 #define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM
79 
80 static const AVOption sab_options[] = {
81  { "luma_radius", "set luma radius", OFFSET(luma.radius), AV_OPT_TYPE_FLOAT, {.dbl=1.0}, RADIUS_MIN, RADIUS_MAX, .flags=FLAGS },
82  { "lr" , "set luma radius", OFFSET(luma.radius), AV_OPT_TYPE_FLOAT, {.dbl=1.0}, RADIUS_MIN, RADIUS_MAX, .flags=FLAGS },
83  { "luma_pre_filter_radius", "set luma pre-filter radius", OFFSET(luma.pre_filter_radius), AV_OPT_TYPE_FLOAT, {.dbl=1.0}, PRE_FILTER_RADIUS_MIN, PRE_FILTER_RADIUS_MAX, .flags=FLAGS },
84  { "lpfr", "set luma pre-filter radius", OFFSET(luma.pre_filter_radius), AV_OPT_TYPE_FLOAT, {.dbl=1.0}, PRE_FILTER_RADIUS_MIN, PRE_FILTER_RADIUS_MAX, .flags=FLAGS },
85  { "luma_strength", "set luma strength", OFFSET(luma.strength), AV_OPT_TYPE_FLOAT, {.dbl=1.0}, STRENGTH_MIN, STRENGTH_MAX, .flags=FLAGS },
86  { "ls", "set luma strength", OFFSET(luma.strength), AV_OPT_TYPE_FLOAT, {.dbl=1.0}, STRENGTH_MIN, STRENGTH_MAX, .flags=FLAGS },
87 
88  { "chroma_radius", "set chroma radius", OFFSET(chroma.radius), AV_OPT_TYPE_FLOAT, {.dbl=RADIUS_MIN-1}, RADIUS_MIN-1, RADIUS_MAX, .flags=FLAGS },
89  { "cr", "set chroma radius", OFFSET(chroma.radius), AV_OPT_TYPE_FLOAT, {.dbl=RADIUS_MIN-1}, RADIUS_MIN-1, RADIUS_MAX, .flags=FLAGS },
90  { "chroma_pre_filter_radius", "set chroma pre-filter radius", OFFSET(chroma.pre_filter_radius), AV_OPT_TYPE_FLOAT, {.dbl=PRE_FILTER_RADIUS_MIN-1},
92  { "cpfr", "set chroma pre-filter radius", OFFSET(chroma.pre_filter_radius), AV_OPT_TYPE_FLOAT, {.dbl=PRE_FILTER_RADIUS_MIN-1},
94  { "chroma_strength", "set chroma strength", OFFSET(chroma.strength), AV_OPT_TYPE_FLOAT, {.dbl=STRENGTH_MIN-1}, STRENGTH_MIN-1, STRENGTH_MAX, .flags=FLAGS },
95  { "cs", "set chroma strength", OFFSET(chroma.strength), AV_OPT_TYPE_FLOAT, {.dbl=STRENGTH_MIN-1}, STRENGTH_MIN-1, STRENGTH_MAX, .flags=FLAGS },
96 
97  { NULL }
98 };
99 
101 
103 {
104  SabContext *s = ctx->priv;
105 
106  /* make chroma default to luma values, if not explicitly set */
107  if (s->chroma.radius < RADIUS_MIN)
108  s->chroma.radius = s->luma.radius;
109  if (s->chroma.pre_filter_radius < PRE_FILTER_RADIUS_MIN)
110  s->chroma.pre_filter_radius = s->luma.pre_filter_radius;
111  if (s->chroma.strength < STRENGTH_MIN)
112  s->chroma.strength = s->luma.strength;
113 
114  s->luma.quality = s->chroma.quality = 3.0;
115  s->sws_flags = SWS_POINT;
116 
118  "luma_radius:%f luma_pre_filter_radius::%f luma_strength:%f "
119  "chroma_radius:%f chroma_pre_filter_radius:%f chroma_strength:%f\n",
120  s->luma .radius, s->luma .pre_filter_radius, s->luma .strength,
121  s->chroma.radius, s->chroma.pre_filter_radius, s->chroma.strength);
122  return 0;
123 }
124 
126 {
127  if (f->pre_filter_context) {
128  sws_freeContext(f->pre_filter_context);
129  f->pre_filter_context = NULL;
130  }
131  av_freep(&f->pre_filter_buf);
132  av_freep(&f->dist_coeff);
133 }
134 
136 {
137  SabContext *s = ctx->priv;
138 
139  close_filter_param(&s->luma);
140  close_filter_param(&s->chroma);
141 }
142 
143 static int open_filter_param(FilterParam *f, int width, int height, unsigned int sws_flags)
144 {
145  SwsVector *vec;
146  SwsFilter sws_f;
147  int i, x, y;
148  int linesize = FFALIGN(width, 8);
149 
150  f->pre_filter_buf = av_malloc(linesize * height);
151  if (!f->pre_filter_buf)
152  return AVERROR(ENOMEM);
153 
154  f->pre_filter_linesize = linesize;
155  vec = sws_getGaussianVec(f->pre_filter_radius, f->quality);
156  sws_f.lumH = sws_f.lumV = vec;
157  sws_f.chrH = sws_f.chrV = NULL;
158  f->pre_filter_context = sws_getContext(width, height, AV_PIX_FMT_GRAY8,
160  sws_flags, &sws_f, NULL, NULL);
161  sws_freeVec(vec);
162 
163  vec = sws_getGaussianVec(f->strength, 5.0);
164  for (i = 0; i < COLOR_DIFF_COEFF_SIZE; i++) {
165  double d;
166  int index = i-COLOR_DIFF_COEFF_SIZE/2 + vec->length/2;
167 
168  if (index < 0 || index >= vec->length) d = 0.0;
169  else d = vec->coeff[index];
170 
171  f->color_diff_coeff[i] = (int)(d/vec->coeff[vec->length/2]*(1<<12) + 0.5);
172  }
173  sws_freeVec(vec);
174 
175  vec = sws_getGaussianVec(f->radius, f->quality);
176  f->dist_width = vec->length;
177  f->dist_linesize = FFALIGN(vec->length, 8);
178  f->dist_coeff = av_malloc_array(f->dist_width, f->dist_linesize * sizeof(*f->dist_coeff));
179  if (!f->dist_coeff) {
180  sws_freeVec(vec);
181  return AVERROR(ENOMEM);
182  }
183 
184  for (y = 0; y < vec->length; y++) {
185  for (x = 0; x < vec->length; x++) {
186  double d = vec->coeff[x] * vec->coeff[y];
187  f->dist_coeff[x + y*f->dist_linesize] = (int)(d*(1<<10) + 0.5);
188  }
189  }
190  sws_freeVec(vec);
191 
192  return 0;
193 }
194 
196 {
197  SabContext *s = inlink->dst->priv;
199  int ret;
200 
201  s->hsub = desc->log2_chroma_w;
202  s->vsub = desc->log2_chroma_h;
203 
204  close_filter_param(&s->luma);
205  ret = open_filter_param(&s->luma, inlink->w, inlink->h, s->sws_flags);
206  if (ret < 0)
207  return ret;
208 
209  close_filter_param(&s->chroma);
210  ret = open_filter_param(&s->chroma,
211  AV_CEIL_RSHIFT(inlink->w, s->hsub),
212  AV_CEIL_RSHIFT(inlink->h, s->vsub), s->sws_flags);
213  return ret;
214 }
215 
216 #define NB_PLANES 4
217 
218 static void blur(uint8_t *dst, const int dst_linesize,
219  const uint8_t *src, const int src_linesize,
220  const int w, const int h, FilterParam *fp)
221 {
222  int x, y;
223  FilterParam f = *fp;
224  const int radius = f.dist_width/2;
225 
226  const uint8_t * const src2[NB_PLANES] = { src };
227  int src2_linesize[NB_PLANES] = { src_linesize };
228  uint8_t *dst2[NB_PLANES] = { f.pre_filter_buf };
229  int dst2_linesize[NB_PLANES] = { f.pre_filter_linesize };
230 
231  sws_scale(f.pre_filter_context, src2, src2_linesize, 0, h, dst2, dst2_linesize);
232 
233 #define UPDATE_FACTOR do { \
234  int factor; \
235  factor = f.color_diff_coeff[COLOR_DIFF_COEFF_SIZE/2 + pre_val - \
236  f.pre_filter_buf[ix + iy*f.pre_filter_linesize]] * f.dist_coeff[dx + dy*f.dist_linesize]; \
237  sum += src[ix + iy*src_linesize] * factor; \
238  div += factor; \
239  } while (0)
240 
241  for (y = 0; y < h; y++) {
242  for (x = 0; x < w; x++) {
243  int sum = 0;
244  int div = 0;
245  int dy;
246  const int pre_val = f.pre_filter_buf[x + y*f.pre_filter_linesize];
247  if (x >= radius && x < w - radius) {
248  for (dy = 0; dy < radius*2 + 1; dy++) {
249  int dx;
250  int iy = y+dy - radius;
251  iy = avpriv_mirror(iy, h-1);
252 
253  for (dx = 0; dx < radius*2 + 1; dx++) {
254  const int ix = x+dx - radius;
256  }
257  }
258  } else {
259  for (dy = 0; dy < radius*2+1; dy++) {
260  int dx;
261  int iy = y+dy - radius;
262  iy = avpriv_mirror(iy, h-1);
263 
264  for (dx = 0; dx < radius*2 + 1; dx++) {
265  int ix = x+dx - radius;
266  ix = avpriv_mirror(ix, w-1);
268  }
269  }
270  }
271  dst[x + y*dst_linesize] = (sum + div/2) / div;
272  }
273  }
274 }
275 
277 {
278  SabContext *s = inlink->dst->priv;
279  AVFilterLink *outlink = inlink->dst->outputs[0];
280  AVFrame *outpic;
281 
282  outpic = ff_get_video_buffer(outlink, outlink->w, outlink->h);
283  if (!outpic) {
285  return AVERROR(ENOMEM);
286  }
287  av_frame_copy_props(outpic, inpic);
288 
289  blur(outpic->data[0], outpic->linesize[0], inpic->data[0], inpic->linesize[0],
290  inlink->w, inlink->h, &s->luma);
291  if (inpic->data[2]) {
292  int cw = AV_CEIL_RSHIFT(inlink->w, s->hsub);
293  int ch = AV_CEIL_RSHIFT(inlink->h, s->vsub);
294  blur(outpic->data[1], outpic->linesize[1], inpic->data[1], inpic->linesize[1], cw, ch, &s->chroma);
295  blur(outpic->data[2], outpic->linesize[2], inpic->data[2], inpic->linesize[2], cw, ch, &s->chroma);
296  }
297 
299  return ff_filter_frame(outlink, outpic);
300 }
301 
302 static const AVFilterPad sab_inputs[] = {
303  {
304  .name = "default",
305  .type = AVMEDIA_TYPE_VIDEO,
306  .filter_frame = filter_frame,
307  .config_props = config_props,
308  },
309 };
310 
312  .name = "sab",
313  .description = NULL_IF_CONFIG_SMALL("Apply shape adaptive blur."),
314  .priv_size = sizeof(SabContext),
315  .init = init,
316  .uninit = uninit,
320  .priv_class = &sab_class,
322 };
PRE_FILTER_RADIUS_MAX
#define PRE_FILTER_RADIUS_MAX
Definition: vf_sab.c:72
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
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
pix_fmts
static enum AVPixelFormat pix_fmts[]
Definition: vf_sab.c:59
ff_filter_frame
int ff_filter_frame(AVFilterLink *link, AVFrame *frame)
Send a frame of data to the next filter.
Definition: avfilter.c:1015
av_pix_fmt_desc_get
const AVPixFmtDescriptor * av_pix_fmt_desc_get(enum AVPixelFormat pix_fmt)
Definition: pixdesc.c:2965
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:160
AVFrame
This structure describes decoded (raw) audio or video data.
Definition: frame.h:374
OFFSET
#define OFFSET(x)
Definition: vf_sab.c:77
pixdesc.h
w
uint8_t w
Definition: llviddspenc.c:38
AVFILTER_DEFINE_CLASS
AVFILTER_DEFINE_CLASS(sab)
AVOption
AVOption.
Definition: opt.h:357
chroma
static av_always_inline void chroma(WaveformContext *s, AVFrame *in, AVFrame *out, int component, int intensity, int offset_y, int offset_x, int column, int mirror, int jobnr, int nb_jobs)
Definition: vf_waveform.c:1639
blur
static void blur(uint8_t *dst, const int dst_linesize, const uint8_t *src, const int src_linesize, const int w, const int h, FilterParam *fp)
Definition: vf_sab.c:218
AV_LOG_VERBOSE
#define AV_LOG_VERBOSE
Detailed information.
Definition: log.h:196
sab_options
static const AVOption sab_options[]
Definition: vf_sab.c:80
sws_scale
int attribute_align_arg sws_scale(struct SwsContext *c, const uint8_t *const srcSlice[], const int srcStride[], int srcSliceY, int srcSliceH, uint8_t *const dst[], const int dstStride[])
swscale wrapper, so we don't need to export the SwsContext.
Definition: swscale.c:1208
AVFilter::name
const char * name
Filter name.
Definition: avfilter.h:170
video.h
FilterParam::radius
float radius
Definition: vf_sab.c:36
PRE_FILTER_RADIUS_MIN
#define PRE_FILTER_RADIUS_MIN
Definition: vf_sab.c:71
sws_freeVec
void sws_freeVec(SwsVector *a)
Definition: utils.c:2328
AVFrame::data
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
Definition: frame.h:395
av_malloc
#define av_malloc(s)
Definition: tableprint_vlc.h:30
SWS_POINT
#define SWS_POINT
Definition: swscale.h:69
AVFilterPad
A filter pad used for either input or output.
Definition: internal.h:33
SabContext::hsub
int hsub
Definition: vf_sab.c:54
av_cold
#define av_cold
Definition: attributes.h:90
ff_video_default_filterpad
const AVFilterPad ff_video_default_filterpad[1]
An AVFilterPad array whose only entry has name "default" and is of type AVMEDIA_TYPE_VIDEO.
Definition: video.c:37
COLOR_DIFF_COEFF_SIZE
#define COLOR_DIFF_COEFF_SIZE
Definition: vf_sab.c:46
width
#define width
RADIUS_MIN
#define RADIUS_MIN
Definition: vf_sab.c:68
s
#define s(width, name)
Definition: cbs_vp9.c:198
AV_CEIL_RSHIFT
#define AV_CEIL_RSHIFT(a, b)
Definition: common.h:60
SwsVector::length
int length
number of coefficients in the vector
Definition: swscale.h:118
ctx
AVFormatContext * ctx
Definition: movenc.c:49
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
sws_getGaussianVec
SwsVector * sws_getGaussianVec(double variance, double quality)
Return a normalized Gaussian curve used to filter stuff quality = 3 is high quality,...
Definition: utils.c:2155
FILTER_INPUTS
#define FILTER_INPUTS(array)
Definition: internal.h:182
AVClass
Describe the class of an AVClass context structure.
Definition: log.h:66
UPDATE_FACTOR
#define UPDATE_FACTOR
NULL
#define NULL
Definition: coverity.c:32
sab_inputs
static const AVFilterPad sab_inputs[]
Definition: vf_sab.c:302
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:709
inpic
av_frame_free & inpic
Definition: vf_mcdeint.c:285
SabContext::vsub
int vsub
Definition: vf_sab.c:55
SabContext
Definition: vf_sab.c:50
FLAGS
#define FLAGS
Definition: vf_sab.c:78
close_filter_param
static void close_filter_param(FilterParam *f)
Definition: vf_sab.c:125
avpriv_mirror
static av_always_inline av_const int avpriv_mirror(int x, int w)
Definition: internal.h:154
SwsVector::coeff
double * coeff
pointer to the list of coefficients
Definition: swscale.h:117
AV_PIX_FMT_GRAY8
@ AV_PIX_FMT_GRAY8
Y , 8bpp.
Definition: pixfmt.h:81
index
int index
Definition: gxfenc.c:90
SwsFilter::chrV
SwsVector * chrV
Definition: swscale.h:126
f
f
Definition: af_crystalizer.c:121
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:94
SwsVector
Definition: swscale.h:116
sws_getContext
struct SwsContext * sws_getContext(int srcW, int srcH, enum AVPixelFormat srcFormat, int dstW, int dstH, enum AVPixelFormat dstFormat, int flags, SwsFilter *srcFilter, SwsFilter *dstFilter, const double *param)
Allocate and return an SwsContext.
Definition: utils.c:2101
FilterParam::color_diff_coeff
int color_diff_coeff[COLOR_DIFF_COEFF_SIZE]
Definition: vf_sab.c:47
config_props
static int config_props(AVFilterLink *inlink)
Definition: vf_sab.c:195
SwsFilter
Definition: swscale.h:122
height
#define height
SwsFilter::lumV
SwsVector * lumV
Definition: swscale.h:124
FilterParam
Definition: boxblur.h:31
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:248
RADIUS_MAX
#define RADIUS_MAX
Definition: vf_sab.c:69
i
#define i(width, name, range_min, range_max)
Definition: cbs_h2645.c:256
src2
const pixel * src2
Definition: h264pred_template.c:422
av_malloc_array
#define av_malloc_array(a, b)
Definition: tableprint_vlc.h:31
STRENGTH_MAX
#define STRENGTH_MAX
Definition: vf_sab.c:75
FilterParam::pre_filter_radius
float pre_filter_radius
Definition: vf_sab.c:37
AVFilterPad::name
const char * name
Pad name.
Definition: internal.h:39
ff_vf_sab
const AVFilter ff_vf_sab
Definition: vf_sab.c:311
SabContext::luma
FilterParam luma
Definition: vf_sab.c:52
AVFilter
Filter definition.
Definition: avfilter.h:166
ret
ret
Definition: filter_design.txt:187
FilterParam::pre_filter_context
struct SwsContext * pre_filter_context
Definition: vf_sab.c:40
open_filter_param
static int open_filter_param(FilterParam *f, int width, int height, unsigned int sws_flags)
Definition: vf_sab.c:143
FilterParam::quality
float quality
Definition: vf_sab.c:39
FilterParam::strength
float strength
Definition: vf_sab.c:38
sws_freeContext
void sws_freeContext(struct SwsContext *swsContext)
Free the swscaler context swsContext.
Definition: utils.c:2432
AV_PIX_FMT_NONE
@ AV_PIX_FMT_NONE
Definition: pixfmt.h:72
avfilter.h
SabContext::sws_flags
unsigned int sws_flags
Definition: vf_sab.c:56
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:407
desc
const char * desc
Definition: libsvtav1.c:79
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
mem.h
filter_frame
static int filter_frame(AVFilterLink *inlink, AVFrame *inpic)
Definition: vf_sab.c:276
AVPixFmtDescriptor
Descriptor that unambiguously describes how the bits of a pixel are stored in the up to 4 data planes...
Definition: pixdesc.h:69
STRENGTH_MIN
#define STRENGTH_MIN
Definition: vf_sab.c:74
FFALIGN
#define FFALIGN(x, a)
Definition: macros.h:78
FILTER_OUTPUTS
#define FILTER_OUTPUTS(array)
Definition: internal.h:183
SwsFilter::lumH
SwsVector * lumH
Definition: swscale.h:123
av_freep
#define av_freep(p)
Definition: tableprint_vlc.h:34
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
d
d
Definition: ffmpeg_filter.c:424
NB_PLANES
#define NB_PLANES
Definition: vf_sab.c:216
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:419
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
FilterParam::dist_coeff
int * dist_coeff
Definition: vf_sab.c:45
h
h
Definition: vp9dsp_template.c:2038
FilterParam::pre_filter_buf
uint8_t * pre_filter_buf
Definition: vf_sab.c:41
init
static av_cold int init(AVFilterContext *ctx)
Definition: vf_sab.c:102
int
int
Definition: ffmpeg_filter.c:424
SwsContext
Definition: swscale_internal.h:299
FilterParam::pre_filter_linesize
int pre_filter_linesize
Definition: vf_sab.c:42
FilterParam::dist_linesize
int dist_linesize
Definition: vf_sab.c:44
SwsFilter::chrH
SwsVector * chrH
Definition: swscale.h:125
SabContext::chroma
FilterParam chroma
Definition: vf_sab.c:53
swscale.h
uninit
static av_cold void uninit(AVFilterContext *ctx)
Definition: vf_sab.c:135
FilterParam::dist_width
int dist_width
Definition: vf_sab.c:43