FFmpeg
vf_smartblur.c
Go to the documentation of this file.
1 /*
2  * Copyright (c) 2002 Michael Niedermayer <michaelni@gmx.at>
3  * Copyright (c) 2012 Jeremy Tran
4  *
5  * This file is part of FFmpeg.
6  *
7  * FFmpeg is free software; you can redistribute it and/or modify
8  * it under the terms of the GNU General Public License as published by
9  * the Free Software Foundation; either version 2 of the License, or
10  * (at your option) any later version.
11  *
12  * FFmpeg is distributed in the hope that it will be useful,
13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15  * GNU General Public License for more details.
16  *
17  * You should have received a copy of the GNU General Public License along
18  * with FFmpeg; if not, write to the Free Software Foundation, Inc.,
19  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
20  */
21 
22 /**
23  * @file
24  * Apply a smartblur filter to the input video
25  * Ported from MPlayer libmpcodecs/vf_smartblur.c by Michael Niedermayer.
26  */
27 
28 #include "libavutil/opt.h"
29 #include "libavutil/pixdesc.h"
30 #include "libswscale/swscale.h"
31 
32 #include "avfilter.h"
33 #include "filters.h"
34 #include "video.h"
35 
36 #define RADIUS_MIN 0.1
37 #define RADIUS_MAX 5.0
38 
39 #define STRENGTH_MIN -1.0
40 #define STRENGTH_MAX 1.0
41 
42 #define THRESHOLD_MIN -30
43 #define THRESHOLD_MAX 30
44 
45 typedef struct FilterParam {
46  float radius;
47  float strength;
48  int threshold;
49  float quality;
50  struct SwsContext *filter_context;
51 } FilterParam;
52 
53 typedef struct SmartblurContext {
54  const AVClass *class;
55  FilterParam luma;
56  FilterParam chroma;
57  FilterParam alpha;
58  int hsub;
59  int vsub;
60  unsigned int sws_flags;
61 } SmartblurContext;
62 
63 #define OFFSET(x) offsetof(SmartblurContext, x)
64 #define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM
65 
66 static const AVOption smartblur_options[] = {
67  { "luma_radius", "set luma radius", OFFSET(luma.radius), AV_OPT_TYPE_FLOAT, {.dbl=1.0}, RADIUS_MIN, RADIUS_MAX, .flags=FLAGS },
68  { "lr" , "set luma radius", OFFSET(luma.radius), AV_OPT_TYPE_FLOAT, {.dbl=1.0}, RADIUS_MIN, RADIUS_MAX, .flags=FLAGS },
69  { "luma_strength", "set luma strength", OFFSET(luma.strength), AV_OPT_TYPE_FLOAT, {.dbl=1.0}, STRENGTH_MIN, STRENGTH_MAX, .flags=FLAGS },
70  { "ls", "set luma strength", OFFSET(luma.strength), AV_OPT_TYPE_FLOAT, {.dbl=1.0}, STRENGTH_MIN, STRENGTH_MAX, .flags=FLAGS },
71  { "luma_threshold", "set luma threshold", OFFSET(luma.threshold), AV_OPT_TYPE_INT, {.i64=0}, THRESHOLD_MIN, THRESHOLD_MAX, .flags=FLAGS },
72  { "lt", "set luma threshold", OFFSET(luma.threshold), AV_OPT_TYPE_INT, {.i64=0}, THRESHOLD_MIN, THRESHOLD_MAX, .flags=FLAGS },
73 
74  { "chroma_radius", "set chroma radius", OFFSET(chroma.radius), AV_OPT_TYPE_FLOAT, {.dbl=RADIUS_MIN-1}, RADIUS_MIN-1, RADIUS_MAX, .flags=FLAGS },
75  { "cr", "set chroma radius", OFFSET(chroma.radius), AV_OPT_TYPE_FLOAT, {.dbl=RADIUS_MIN-1}, RADIUS_MIN-1, RADIUS_MAX, .flags=FLAGS },
76  { "chroma_strength", "set chroma strength", OFFSET(chroma.strength), AV_OPT_TYPE_FLOAT, {.dbl=STRENGTH_MIN-1}, STRENGTH_MIN-1, STRENGTH_MAX, .flags=FLAGS },
77  { "cs", "set chroma strength", OFFSET(chroma.strength), AV_OPT_TYPE_FLOAT, {.dbl=STRENGTH_MIN-1}, STRENGTH_MIN-1, STRENGTH_MAX, .flags=FLAGS },
78  { "chroma_threshold", "set chroma threshold", OFFSET(chroma.threshold), AV_OPT_TYPE_INT, {.i64=THRESHOLD_MIN-1}, THRESHOLD_MIN-1, THRESHOLD_MAX, .flags=FLAGS },
79  { "ct", "set chroma threshold", OFFSET(chroma.threshold), AV_OPT_TYPE_INT, {.i64=THRESHOLD_MIN-1}, THRESHOLD_MIN-1, THRESHOLD_MAX, .flags=FLAGS },
80 
81  { "alpha_radius", "set alpha radius", OFFSET(alpha.radius), AV_OPT_TYPE_FLOAT, {.dbl=RADIUS_MIN-1}, RADIUS_MIN-1, RADIUS_MAX, .flags=FLAGS },
82  { "ar" , "set alpha radius", OFFSET(alpha.radius), AV_OPT_TYPE_FLOAT, {.dbl=RADIUS_MIN-1}, RADIUS_MIN-1, RADIUS_MAX, .flags=FLAGS },
83  { "alpha_strength", "set alpha strength", OFFSET(alpha.strength), AV_OPT_TYPE_FLOAT, {.dbl=STRENGTH_MIN-1}, STRENGTH_MIN-1, STRENGTH_MAX, .flags=FLAGS },
84  { "as", "set alpha strength", OFFSET(alpha.strength), AV_OPT_TYPE_FLOAT, {.dbl=STRENGTH_MIN-1}, STRENGTH_MIN-1, STRENGTH_MAX, .flags=FLAGS },
85  { "alpha_threshold", "set alpha threshold", OFFSET(alpha.threshold), AV_OPT_TYPE_INT, {.i64=THRESHOLD_MIN-1}, THRESHOLD_MIN-1, THRESHOLD_MAX, .flags=FLAGS },
86  { "at", "set alpha threshold", OFFSET(alpha.threshold), AV_OPT_TYPE_INT, {.i64=THRESHOLD_MIN-1}, THRESHOLD_MIN-1, THRESHOLD_MAX, .flags=FLAGS },
87 
88  { NULL }
89 };
90 
91 AVFILTER_DEFINE_CLASS(smartblur);
92 
93 static av_cold int init(AVFilterContext *ctx)
94 {
95  SmartblurContext *s = ctx->priv;
96 
97  /* make chroma default to luma values, if not explicitly set */
98  if (s->chroma.radius < RADIUS_MIN)
99  s->chroma.radius = s->luma.radius;
100  if (s->chroma.strength < STRENGTH_MIN)
101  s->chroma.strength = s->luma.strength;
102  if (s->chroma.threshold < THRESHOLD_MIN)
103  s->chroma.threshold = s->luma.threshold;
104 
105  /* make alpha default to luma values, if not explicitly set */
106  if (s->alpha.radius < RADIUS_MIN)
107  s->alpha.radius = s->luma.radius;
108  if (s->alpha.strength < STRENGTH_MIN)
109  s->alpha.strength = s->luma.strength;
110  if (s->alpha.threshold < THRESHOLD_MIN)
111  s->alpha.threshold = s->luma.threshold;
112 
113  s->luma.quality = s->chroma.quality = s->alpha.quality = 3.0;
114  s->sws_flags = SWS_BICUBIC;
115 
116  av_log(ctx, AV_LOG_VERBOSE,
117  "luma_radius:%f luma_strength:%f luma_threshold:%d "
118  "chroma_radius:%f chroma_strength:%f chroma_threshold:%d "
119  "alpha_radius:%f alpha_strength:%f alpha_threshold:%d\n",
120  s->luma.radius, s->luma.strength, s->luma.threshold,
121  s->chroma.radius, s->chroma.strength, s->chroma.threshold,
122  s->alpha.radius, s->alpha.strength, s->alpha.threshold);
123  return 0;
124 }
125 
126 static av_cold void uninit(AVFilterContext *ctx)
127 {
128  SmartblurContext *s = ctx->priv;
129 
130  sws_freeContext(s->luma.filter_context);
131  sws_freeContext(s->chroma.filter_context);
132  sws_freeContext(s->alpha.filter_context);
133 }
134 
135 static const enum AVPixelFormat pix_fmts[] = {
136  AV_PIX_FMT_YUV444P, AV_PIX_FMT_YUVA444P,
137  AV_PIX_FMT_YUV422P, AV_PIX_FMT_YUVA422P,
138  AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUVA420P,
139  AV_PIX_FMT_YUV411P, AV_PIX_FMT_YUV410P,
140  AV_PIX_FMT_YUV440P, AV_PIX_FMT_GRAY8,
141  AV_PIX_FMT_NONE
142 };
143 
144 static int alloc_sws_context(FilterParam *f, int width, int height, unsigned int flags)
145 {
146  SwsVector *vec;
147  SwsFilter sws_filter;
148 
149  vec = sws_getGaussianVec(f->radius, f->quality);
150 
151  if (!vec)
152  return AVERROR(EINVAL);
153 
154  sws_scaleVec(vec, f->strength);
155  vec->coeff[vec->length / 2] += 1.0 - f->strength;
156  sws_filter.lumH = sws_filter.lumV = vec;
157  sws_filter.chrH = sws_filter.chrV = NULL;
158  f->filter_context = sws_getCachedContext(f->filter_context,
159  width, height, AV_PIX_FMT_GRAY8,
160  width, height, AV_PIX_FMT_GRAY8,
161  flags, &sws_filter, NULL, NULL);
162 
163  sws_freeVec(vec);
164 
165  if (!f->filter_context)
166  return AVERROR(EINVAL);
167 
168  return 0;
169 }
170 
171 static int config_props(AVFilterLink *inlink)
172 {
173  SmartblurContext *s = inlink->dst->priv;
174  const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format);
175 
176  s->hsub = desc->log2_chroma_w;
177  s->vsub = desc->log2_chroma_h;
178 
179  alloc_sws_context(&s->luma, inlink->w, inlink->h, s->sws_flags);
180  alloc_sws_context(&s->chroma,
181  AV_CEIL_RSHIFT(inlink->w, s->hsub),
182  AV_CEIL_RSHIFT(inlink->h, s->vsub),
183  s->sws_flags);
184  alloc_sws_context(&s->alpha, inlink->w, inlink->h, s->sws_flags);
185 
186  return 0;
187 }
188 
189 static void blur(uint8_t *dst, const int dst_linesize,
190  const uint8_t *src, const int src_linesize,
191  const int w, const int h, const int threshold,
192  struct SwsContext *filter_context)
193 {
194  int x, y;
195  int orig, filtered;
196  int diff;
197  /* Declare arrays of 4 to get aligned data */
198  const uint8_t* const src_array[4] = {src};
199  uint8_t *dst_array[4] = {dst};
200  int src_linesize_array[4] = {src_linesize};
201  int dst_linesize_array[4] = {dst_linesize};
202 
203  sws_scale(filter_context, src_array, src_linesize_array,
204  0, h, dst_array, dst_linesize_array);
205 
206  if (threshold > 0) {
207  for (y = 0; y < h; ++y) {
208  for (x = 0; x < w; ++x) {
209  orig = src[x + y * src_linesize];
210  filtered = dst[x + y * dst_linesize];
211  diff = orig - filtered;
212 
213  if (diff > 0) {
214  if (diff > 2 * threshold)
215  dst[x + y * dst_linesize] = orig;
216  else if (diff > threshold)
217  /* add 'diff' and subtract 'threshold' from 'filtered' */
218  dst[x + y * dst_linesize] = orig - threshold;
219  } else {
220  if (-diff > 2 * threshold)
221  dst[x + y * dst_linesize] = orig;
222  else if (-diff > threshold)
223  /* add 'diff' and 'threshold' to 'filtered' */
224  dst[x + y * dst_linesize] = orig + threshold;
225  }
226  }
227  }
228  } else if (threshold < 0) {
229  for (y = 0; y < h; ++y) {
230  for (x = 0; x < w; ++x) {
231  orig = src[x + y * src_linesize];
232  filtered = dst[x + y * dst_linesize];
233  diff = orig - filtered;
234 
235  if (diff > 0) {
236  if (diff <= -threshold)
237  dst[x + y * dst_linesize] = orig;
238  else if (diff <= -2 * threshold)
239  /* subtract 'diff' and 'threshold' from 'orig' */
240  dst[x + y * dst_linesize] = filtered - threshold;
241  } else {
242  if (diff >= threshold)
243  dst[x + y * dst_linesize] = orig;
244  else if (diff >= 2 * threshold)
245  /* add 'threshold' and subtract 'diff' from 'orig' */
246  dst[x + y * dst_linesize] = filtered + threshold;
247  }
248  }
249  }
250  }
251 }
252 
253 static int filter_frame(AVFilterLink *inlink, AVFrame *inpic)
254 {
255  SmartblurContext *s = inlink->dst->priv;
256  AVFilterLink *outlink = inlink->dst->outputs[0];
257  AVFrame *outpic;
258  int cw = AV_CEIL_RSHIFT(inlink->w, s->hsub);
259  int ch = AV_CEIL_RSHIFT(inlink->h, s->vsub);
260 
261  outpic = ff_get_video_buffer(outlink, outlink->w, outlink->h);
262  if (!outpic) {
263  av_frame_free(&inpic);
264  return AVERROR(ENOMEM);
265  }
266  av_frame_copy_props(outpic, inpic);
267 
268  blur(outpic->data[0], outpic->linesize[0],
269  inpic->data[0], inpic->linesize[0],
270  inlink->w, inlink->h, s->luma.threshold,
271  s->luma.filter_context);
272 
273  if (inpic->data[2]) {
274  blur(outpic->data[1], outpic->linesize[1],
275  inpic->data[1], inpic->linesize[1],
276  cw, ch, s->chroma.threshold,
277  s->chroma.filter_context);
278  blur(outpic->data[2], outpic->linesize[2],
279  inpic->data[2], inpic->linesize[2],
280  cw, ch, s->chroma.threshold,
281  s->chroma.filter_context);
282  }
283 
284  if (inpic->data[3]) {
285  blur(outpic->data[3], outpic->linesize[3],
286  inpic->data[3], inpic->linesize[3],
287  inlink->w, inlink->h, s->alpha.threshold,
288  s->alpha.filter_context);
289  }
290 
291  av_frame_free(&inpic);
292  return ff_filter_frame(outlink, outpic);
293 }
294 
295 static const AVFilterPad smartblur_inputs[] = {
296  {
297  .name = "default",
298  .type = AVMEDIA_TYPE_VIDEO,
299  .filter_frame = filter_frame,
300  .config_props = config_props,
301  },
302 };
303 
304 const AVFilter ff_vf_smartblur = {
305  .name = "smartblur",
306  .description = NULL_IF_CONFIG_SMALL("Blur the input video without impacting the outlines."),
307  .priv_size = sizeof(SmartblurContext),
308  .init = init,
309  .uninit = uninit,
310  FILTER_INPUTS(smartblur_inputs),
311  FILTER_OUTPUTS(ff_video_default_filterpad),
312  FILTER_PIXFMTS_ARRAY(pix_fmts),
313  .priv_class = &smartblur_class,
314  .flags = AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC,
315 };
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:116
ff_vf_smartblur
const AVFilter ff_vf_smartblur
Definition: vf_smartblur.c:304
AVPixelFormat
AVPixelFormat
Pixel format.
Definition: pixfmt.h:71
config_props
static int config_props(AVFilterLink *inlink)
Definition: vf_smartblur.c:171
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
FILTER_PIXFMTS_ARRAY
#define FILTER_PIXFMTS_ARRAY(array)
Definition: filters.h:242
AVFILTER_DEFINE_CLASS
AVFILTER_DEFINE_CLASS(smartblur)
ff_filter_frame
int ff_filter_frame(AVFilterLink *link, AVFrame *frame)
Send a frame of data to the next filter.
Definition: avfilter.c:1062
av_pix_fmt_desc_get
const AVPixFmtDescriptor * av_pix_fmt_desc_get(enum AVPixelFormat pix_fmt)
Definition: pixdesc.c:3170
RADIUS_MAX
#define RADIUS_MAX
Definition: vf_smartblur.c:37
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
sws_freeContext
void sws_freeContext(SwsContext *swsContext)
Free the swscaler context swsContext.
Definition: utils.c:2446
alloc_sws_context
static int alloc_sws_context(FilterParam *f, int width, int height, unsigned int flags)
Definition: vf_smartblur.c:144
smartblur_options
static const AVOption smartblur_options[]
Definition: vf_smartblur.c:66
av_frame_free
void av_frame_free(AVFrame **frame)
Free the frame and any dynamically allocated objects in it, e.g.
Definition: frame.c:162
OFFSET
#define OFFSET(x)
Definition: vf_smartblur.c:63
FILTER_INPUTS
#define FILTER_INPUTS(array)
Definition: filters.h:262
AVFrame
This structure describes decoded (raw) audio or video data.
Definition: frame.h:389
pixdesc.h
w
uint8_t w
Definition: llviddspenc.c:38
AVOption
AVOption.
Definition: opt.h:429
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
RADIUS_MIN
#define RADIUS_MIN
Definition: vf_smartblur.c:36
FilterParam::threshold
int threshold
Definition: vf_smartblur.c:48
pix_fmts
static enum AVPixelFormat pix_fmts[]
Definition: vf_smartblur.c:135
AV_LOG_VERBOSE
#define AV_LOG_VERBOSE
Detailed information.
Definition: log.h:225
SmartblurContext::chroma
FilterParam chroma
Definition: vf_smartblur.c:56
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
AVFilter::name
const char * name
Filter name.
Definition: avfilter.h:205
video.h
FilterParam::radius
int radius
Definition: boxblur.h:32
sws_freeVec
void sws_freeVec(SwsVector *a)
Definition: utils.c:2342
AVFrame::data
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
Definition: frame.h:410
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, const int threshold, struct SwsContext *filter_context)
Definition: vf_smartblur.c:189
SmartblurContext::hsub
int hsub
Definition: vf_smartblur.c:58
sws_getCachedContext
SwsContext * sws_getCachedContext(SwsContext *context, int srcW, int srcH, enum AVPixelFormat srcFormat, int dstW, int dstH, enum AVPixelFormat dstFormat, int flags, SwsFilter *srcFilter, SwsFilter *dstFilter, const double *param)
Check if context can be reused, otherwise reallocate a new one.
Definition: utils.c:2532
init
static av_cold int init(AVFilterContext *ctx)
Definition: vf_smartblur.c:93
SmartblurContext::alpha
FilterParam alpha
Definition: vf_smartblur.c:57
AVFilterPad
A filter pad used for either input or output.
Definition: filters.h:38
SwsContext
struct SwsContext SwsContext
Definition: swscale.h:45
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
s
#define s(width, name)
Definition: cbs_vp9.c:198
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_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:227
filters.h
ctx
AVFormatContext * ctx
Definition: movenc.c:49
SmartblurContext::sws_flags
unsigned int sws_flags
Definition: vf_smartblur.c:60
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:2169
FILTER_OUTPUTS
#define FILTER_OUTPUTS(array)
Definition: filters.h:263
AVClass
Describe the class of an AVClass context structure.
Definition: log.h:75
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:713
inpic
av_frame_free & inpic
Definition: vf_mcdeint.c:285
filter_frame
static int filter_frame(AVFilterLink *inlink, AVFrame *inpic)
Definition: vf_smartblur.c:253
THRESHOLD_MIN
#define THRESHOLD_MIN
Definition: vf_smartblur.c:42
SwsVector::coeff
double * coeff
pointer to the list of coefficients
Definition: swscale.h:226
AV_PIX_FMT_GRAY8
@ AV_PIX_FMT_GRAY8
Y , 8bpp.
Definition: pixfmt.h:81
sws_scaleVec
void sws_scaleVec(SwsVector *a, double scalar)
Scale all the coefficients of a by the scalar value.
Definition: utils.c:2235
STRENGTH_MIN
#define STRENGTH_MIN
Definition: vf_smartblur.c:39
SwsFilter::chrV
SwsVector * chrV
Definition: swscale.h:235
smartblur_inputs
static const AVFilterPad smartblur_inputs[]
Definition: vf_smartblur.c:295
f
f
Definition: af_crystalizer.c:122
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
height
#define height
Definition: dsp.h:85
uninit
static av_cold void uninit(AVFilterContext *ctx)
Definition: vf_smartblur.c:126
SwsVector
Definition: swscale.h:225
dst
uint8_t ptrdiff_t const uint8_t ptrdiff_t int intptr_t intptr_t int int16_t * dst
Definition: dsp.h:83
diff
static av_always_inline int diff(const struct color_info *a, const struct color_info *b, const int trans_thresh)
Definition: vf_paletteuse.c:166
SwsFilter
Definition: swscale.h:231
FLAGS
#define FLAGS
Definition: vf_smartblur.c:64
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
SwsFilter::lumV
SwsVector * lumV
Definition: swscale.h:233
FilterParam
Definition: boxblur.h:31
SmartblurContext::luma
FilterParam luma
Definition: vf_smartblur.c:55
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:182
AV_OPT_TYPE_FLOAT
@ AV_OPT_TYPE_FLOAT
Underlying C type is float.
Definition: opt.h:271
AVFilterPad::name
const char * name
Pad name.
Definition: filters.h:44
AVFilter
Filter definition.
Definition: avfilter.h:201
THRESHOLD_MAX
#define THRESHOLD_MAX
Definition: vf_smartblur.c:43
STRENGTH_MAX
#define STRENGTH_MAX
Definition: vf_smartblur.c:40
FilterParam::quality
float quality
Definition: vf_sab.c:39
FilterParam::strength
float strength
Definition: vf_sab.c:38
sws_scale
int attribute_align_arg sws_scale(SwsContext *sws, 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:1246
AV_PIX_FMT_NONE
@ AV_PIX_FMT_NONE
Definition: pixfmt.h:72
AV_OPT_TYPE_INT
@ AV_OPT_TYPE_INT
Underlying C type is int.
Definition: opt.h:259
avfilter.h
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:457
SmartblurContext
Definition: vf_smartblur.c:53
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
FilterParam::filter_context
struct SwsContext * filter_context
Definition: vf_smartblur.c:50
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
SwsFilter::lumH
SwsVector * lumH
Definition: swscale.h:232
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
SmartblurContext::vsub
int vsub
Definition: vf_smartblur.c:59
flags
#define flags(name, subs,...)
Definition: cbs_av1.c:482
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:434
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
h
h
Definition: vp9dsp_template.c:2070
width
#define width
Definition: dsp.h:85
SwsFilter::chrH
SwsVector * chrH
Definition: swscale.h:234
SWS_BICUBIC
#define SWS_BICUBIC
Definition: swscale.h:152
src
#define src
Definition: vp8dsp.c:248
swscale.h
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
Generated on Thu Nov 7 2024 19:22:30 for FFmpeg by   doxygen 1.8.17