FFmpeg
vf_monochrome.c
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1 /*
2  * Copyright (c) 2021 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 #include <float.h>
22 
23 #include "libavutil/opt.h"
24 #include "libavutil/pixdesc.h"
25 #include "avfilter.h"
26 #include "internal.h"
27 #include "video.h"
28 
29 typedef struct MonochromeContext {
30  const AVClass *class;
31 
32  float b, r;
33  float size;
34  float high;
35 
36  int depth;
37  int subw, subh;
38 
40  int jobnr, int nb_jobs);
42  int jobnr, int nb_jobs);
44 
45 static float envelope(const float x)
46 {
47  const float beta = 0.6f;
48 
49  if (x < beta) {
50  const float tmp = fabsf(x / beta - 1.f);
51 
52  return 1.f - tmp * tmp;
53  } else {
54  const float tmp = (1.f - x) / (1.f - beta);
55 
56  return tmp * tmp * (3.f - 2.f * tmp);
57  }
58 }
59 
60 static float filter(float b, float r, float u, float v, float size)
61 {
62  return expf(-av_clipf(((b - u) * (b - u) +
63  (r - v) * (r - v)) *
64  size, 0.f, 1.f));
65 }
66 
67 #define PROCESS() \
68  const int cx = x >> subw; \
69  float y = yptr[x] * imax; \
70  float u = uptr[cx] * imax - .5f; \
71  float v = vptr[cx] * imax - .5f; \
72  float tt, t, ny; \
73  \
74  ny = filter(b, r, u, v, size); \
75  tt = envelope(y); \
76  t = tt + (1.f - tt) * ihigh; \
77  ny = (1.f - t) * y + t * ny * y;
78 
79 static int monochrome_slice8(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
80 {
81  MonochromeContext *s = ctx->priv;
82  AVFrame *frame = arg;
83  const int depth = s->depth;
84  const int subw = s->subw;
85  const int subh = s->subh;
86  const float max = (1 << depth) - 1;
87  const float imax = 1.f / max;
88  const int width = frame->width;
89  const int height = frame->height;
90  const int slice_start = (height * jobnr) / nb_jobs;
91  const int slice_end = (height * (jobnr + 1)) / nb_jobs;
92  const ptrdiff_t ylinesize = frame->linesize[0];
93  const ptrdiff_t ulinesize = frame->linesize[1];
94  const ptrdiff_t vlinesize = frame->linesize[2];
95  uint8_t *yptr = frame->data[0] + slice_start * ylinesize;
96  const float ihigh = 1.f - s->high;
97  const float size = 1.f / s->size;
98  const float b = s->b * .5f;
99  const float r = s->r * .5f;
100 
101  for (int y = slice_start; y < slice_end; y++) {
102  const int cy = y >> subh;
103  uint8_t *uptr = frame->data[1] + cy * ulinesize;
104  uint8_t *vptr = frame->data[2] + cy * vlinesize;
105 
106  for (int x = 0; x < width; x++) {
107  PROCESS()
108 
109  yptr[x] = av_clip_uint8(lrintf(ny * max));
110  }
111 
112  yptr += ylinesize;
113  }
114 
115  return 0;
116 }
117 
118 static int monochrome_slice16(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
119 {
120  MonochromeContext *s = ctx->priv;
121  AVFrame *frame = arg;
122  const int depth = s->depth;
123  const int subw = s->subw;
124  const int subh = s->subh;
125  const float max = (1 << depth) - 1;
126  const float imax = 1.f / max;
127  const int width = frame->width;
128  const int height = frame->height;
129  const int slice_start = (height * jobnr) / nb_jobs;
130  const int slice_end = (height * (jobnr + 1)) / nb_jobs;
131  const ptrdiff_t ylinesize = frame->linesize[0] / 2;
132  const ptrdiff_t ulinesize = frame->linesize[1] / 2;
133  const ptrdiff_t vlinesize = frame->linesize[2] / 2;
134  uint16_t *yptr = (uint16_t *)frame->data[0] + slice_start * ylinesize;
135  const float ihigh = 1.f - s->high;
136  const float size = 1.f / s->size;
137  const float b = s->b * .5f;
138  const float r = s->r * .5f;
139 
140  for (int y = slice_start; y < slice_end; y++) {
141  const int cy = y >> subh;
142  uint16_t *uptr = (uint16_t *)frame->data[1] + cy * ulinesize;
143  uint16_t *vptr = (uint16_t *)frame->data[2] + cy * vlinesize;
144 
145  for (int x = 0; x < width; x++) {
146  PROCESS()
147 
148  yptr[x] = av_clip_uintp2_c(lrintf(ny * max), depth);
149  }
150 
151  yptr += ylinesize;
152  }
153 
154  return 0;
155 }
156 
157 static int clear_slice8(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
158 {
159  MonochromeContext *s = ctx->priv;
160  AVFrame *frame = arg;
161  const int depth = s->depth;
162  const int half = 1 << (depth - 1);
163  const int subw = s->subw;
164  const int subh = s->subh;
165  const int width = AV_CEIL_RSHIFT(frame->width, subw);
166  const int height = AV_CEIL_RSHIFT(frame->height, subh);
167  const int slice_start = (height * jobnr) / nb_jobs;
168  const int slice_end = (height * (jobnr + 1)) / nb_jobs;
169  const ptrdiff_t ulinesize = frame->linesize[1];
170  const ptrdiff_t vlinesize = frame->linesize[2];
171 
172  for (int y = slice_start; y < slice_end; y++) {
173  uint8_t *uptr = frame->data[1] + y * ulinesize;
174  uint8_t *vptr = frame->data[2] + y * vlinesize;
175 
176  memset(uptr, half, width);
177  memset(vptr, half, width);
178  }
179 
180  return 0;
181 }
182 
183 static int clear_slice16(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
184 {
185  MonochromeContext *s = ctx->priv;
186  AVFrame *frame = arg;
187  const int depth = s->depth;
188  const int half = 1 << (depth - 1);
189  const int subw = s->subw;
190  const int subh = s->subh;
191  const int width = AV_CEIL_RSHIFT(frame->width, subw);
192  const int height = AV_CEIL_RSHIFT(frame->height, subh);
193  const int slice_start = (height * jobnr) / nb_jobs;
194  const int slice_end = (height * (jobnr + 1)) / nb_jobs;
195  const ptrdiff_t ulinesize = frame->linesize[1] / 2;
196  const ptrdiff_t vlinesize = frame->linesize[2] / 2;
197 
198  for (int y = slice_start; y < slice_end; y++) {
199  uint16_t *uptr = (uint16_t *)frame->data[1] + y * ulinesize;
200  uint16_t *vptr = (uint16_t *)frame->data[2] + y * vlinesize;
201 
202  for (int x = 0; x < width; x++) {
203  uptr[x] = half;
204  vptr[x] = half;
205  }
206  }
207 
208  return 0;
209 }
210 
212 {
213  AVFilterContext *ctx = inlink->dst;
214  MonochromeContext *s = ctx->priv;
215 
216  ff_filter_execute(ctx, s->do_slice, frame, NULL,
218  ff_filter_execute(ctx, s->clear_uv, frame, NULL,
219  FFMIN(frame->height >> s->subh, ff_filter_get_nb_threads(ctx)));
220 
221  return ff_filter_frame(ctx->outputs[0], frame);
222 }
223 
224 static const enum AVPixelFormat pixel_fmts[] = {
243 };
244 
246 {
247  AVFilterContext *ctx = inlink->dst;
248  MonochromeContext *s = ctx->priv;
250 
251  s->depth = desc->comp[0].depth;
252  s->do_slice = s->depth <= 8 ? monochrome_slice8 : monochrome_slice16;
253  s->clear_uv = s->depth <= 8 ? clear_slice8 : clear_slice16;
254  s->subw = desc->log2_chroma_w;
255  s->subh = desc->log2_chroma_h;
256 
257  return 0;
258 }
259 
260 static const AVFilterPad monochrome_inputs[] = {
261  {
262  .name = "default",
263  .type = AVMEDIA_TYPE_VIDEO,
265  .filter_frame = filter_frame,
266  .config_props = config_input,
267  },
268 };
269 
270 #define OFFSET(x) offsetof(MonochromeContext, x)
271 #define VF AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_RUNTIME_PARAM
272 
273 static const AVOption monochrome_options[] = {
274  { "cb", "set the chroma blue spot", OFFSET(b), AV_OPT_TYPE_FLOAT, {.dbl=0},-1, 1, VF },
275  { "cr", "set the chroma red spot", OFFSET(r), AV_OPT_TYPE_FLOAT, {.dbl=0},-1, 1, VF },
276  { "size", "set the color filter size", OFFSET(size), AV_OPT_TYPE_FLOAT, {.dbl=1},.1,10, VF },
277  { "high", "set the highlights strength", OFFSET(high), AV_OPT_TYPE_FLOAT, {.dbl=0}, 0, 1, VF },
278  { NULL }
279 };
280 
281 AVFILTER_DEFINE_CLASS(monochrome);
282 
284  .name = "monochrome",
285  .description = NULL_IF_CONFIG_SMALL("Convert video to gray using custom color filter."),
286  .priv_size = sizeof(MonochromeContext),
287  .priv_class = &monochrome_class,
292  .process_command = ff_filter_process_command,
293 };
AV_PIX_FMT_YUVA422P16
#define AV_PIX_FMT_YUVA422P16
Definition: pixfmt.h:522
MonochromeContext::clear_uv
int(* clear_uv)(AVFilterContext *s, void *arg, int jobnr, int nb_jobs)
Definition: vf_monochrome.c:41
AVPixelFormat
AVPixelFormat
Pixel format.
Definition: pixfmt.h:71
r
const char * r
Definition: vf_curves.c:127
opt.h
u
#define u(width, name, range_min, range_max)
Definition: cbs_h2645.c:251
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
MonochromeContext::high
float high
Definition: vf_monochrome.c:34
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_PIX_FMT_YUVA422P9
#define AV_PIX_FMT_YUVA422P9
Definition: pixfmt.h:514
AVFrame
This structure describes decoded (raw) audio or video data.
Definition: frame.h:375
tmp
static uint8_t tmp[11]
Definition: aes_ctr.c:28
pixdesc.h
av_clip_uintp2_c
static av_always_inline av_const unsigned av_clip_uintp2_c(int a, int p)
Clip a signed integer to an unsigned power of two range.
Definition: common.h:279
AV_PIX_FMT_YUVA420P16
#define AV_PIX_FMT_YUVA420P16
Definition: pixfmt.h:521
AV_PIX_FMT_YUVA420P10
#define AV_PIX_FMT_YUVA420P10
Definition: pixfmt.h:516
AVOption
AVOption.
Definition: opt.h:346
b
#define b
Definition: input.c:41
monochrome_slice8
static int monochrome_slice8(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
Definition: vf_monochrome.c:79
expf
#define expf(x)
Definition: libm.h:283
AV_PIX_FMT_YUV420P10
#define AV_PIX_FMT_YUV420P10
Definition: pixfmt.h:478
half
static uint8_t half(int a, int b)
Definition: mobiclip.c:539
float.h
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
max
#define max(a, b)
Definition: cuda_runtime.h:33
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:517
AV_PIX_FMT_YUVA420P9
#define AV_PIX_FMT_YUVA420P9
Definition: pixfmt.h:513
MonochromeContext::b
float b
Definition: vf_monochrome.c:32
VF
#define VF
Definition: vf_monochrome.c:271
MonochromeContext
Definition: vf_monochrome.c:29
AV_PIX_FMT_YUVA444P16
#define AV_PIX_FMT_YUVA444P16
Definition: pixfmt.h:523
pixel_fmts
static enum AVPixelFormat pixel_fmts[]
Definition: vf_monochrome.c:224
AV_PIX_FMT_YUV422P9
#define AV_PIX_FMT_YUV422P9
Definition: pixfmt.h:476
fabsf
static __device__ float fabsf(float a)
Definition: cuda_runtime.h:181
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:481
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
MonochromeContext::subw
int subw
Definition: vf_monochrome.c:37
MonochromeContext::subh
int subh
Definition: vf_monochrome.c:37
av_cold
#define av_cold
Definition: attributes.h:90
AV_PIX_FMT_YUV422P16
#define AV_PIX_FMT_YUV422P16
Definition: pixfmt.h:490
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
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
width
#define width
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_PIX_FMT_YUV444P16
#define AV_PIX_FMT_YUV444P16
Definition: pixfmt.h:491
AV_CEIL_RSHIFT
#define AV_CEIL_RSHIFT(a, b)
Definition: common.h:59
ff_vf_monochrome
const AVFilter ff_vf_monochrome
Definition: vf_monochrome.c:283
slice_end
static int slice_end(AVCodecContext *avctx, AVFrame *pict)
Handle slice ends.
Definition: mpeg12dec.c:1730
AV_PIX_FMT_YUVA444P12
#define AV_PIX_FMT_YUVA444P12
Definition: pixfmt.h:520
AV_PIX_FMT_YUV420P9
#define AV_PIX_FMT_YUV420P9
Definition: pixfmt.h:475
AV_PIX_FMT_YUV420P16
#define AV_PIX_FMT_YUV420P16
Definition: pixfmt.h:489
ctx
AVFormatContext * ctx
Definition: movenc.c:49
MonochromeContext::size
float size
Definition: vf_monochrome.c:33
filter_frame
static int filter_frame(AVFilterLink *inlink, AVFrame *frame)
Definition: vf_monochrome.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
arg
const char * arg
Definition: jacosubdec.c:67
AVClass
Describe the class of an AVClass context structure.
Definition: log.h:66
NULL
#define NULL
Definition: coverity.c:32
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
AV_PIX_FMT_YUV440P10
#define AV_PIX_FMT_YUV440P10
Definition: pixfmt.h:480
AV_PIX_FMT_YUV422P10
#define AV_PIX_FMT_YUV422P10
Definition: pixfmt.h:479
av_clipf
av_clipf
Definition: af_crystalizer.c:121
MonochromeContext::depth
int depth
Definition: vf_monochrome.c:36
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
for
for(k=2;k<=8;++k)
Definition: h264pred_template.c:425
AV_PIX_FMT_YUV422P12
#define AV_PIX_FMT_YUV422P12
Definition: pixfmt.h:483
size
int size
Definition: twinvq_data.h:10344
AV_PIX_FMT_YUV444P12
#define AV_PIX_FMT_YUV444P12
Definition: pixfmt.h:485
MonochromeContext::do_slice
int(* do_slice)(AVFilterContext *s, void *arg, int jobnr, int nb_jobs)
Definition: vf_monochrome.c:39
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:887
height
#define height
PROCESS
#define PROCESS()
Definition: vf_monochrome.c:67
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:518
monochrome_inputs
static const AVFilterPad monochrome_inputs[]
Definition: vf_monochrome.c:260
config_input
static av_cold int config_input(AVFilterLink *inlink)
Definition: vf_monochrome.c:245
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:238
lrintf
#define lrintf(x)
Definition: libm_mips.h:72
envelope
static float envelope(const float x)
Definition: vf_monochrome.c:45
ff_filter_get_nb_threads
int ff_filter_get_nb_threads(AVFilterContext *ctx)
Get number of threads for current filter instance.
Definition: avfilter.c:827
monochrome_options
static const AVOption monochrome_options[]
Definition: vf_monochrome.c:273
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:477
MonochromeContext::r
float r
Definition: vf_monochrome.c:32
AVFilter
Filter definition.
Definition: avfilter.h:166
filter
static float filter(float b, float r, float u, float v, float size)
Definition: vf_monochrome.c:60
clear_slice8
static int clear_slice8(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
Definition: vf_monochrome.c:157
frame
these buffered frames must be flushed immediately if a new input produces new the filter must not call request_frame to get more It must just process the frame or queue it The task of requesting more frames is left to the filter s request_frame method or the application If a filter has several the filter must be ready for frames arriving randomly on any input any filter with several inputs will most likely require some kind of queuing mechanism It is perfectly acceptable to have a limited queue and to drop frames when the inputs are too unbalanced request_frame For filters that do not use the this method is called when a frame is wanted on an output For a it should directly call filter_frame on the corresponding output For a if there are queued frames already one of these frames should be pushed If the filter should request a frame on one of its repeatedly until at least one frame has been pushed Return or at least make progress towards producing a frame
Definition: filter_design.txt:264
AV_PIX_FMT_YUVA444P9
#define AV_PIX_FMT_YUVA444P9
Definition: pixfmt.h:515
AV_PIX_FMT_YUV420P12
#define AV_PIX_FMT_YUV420P12
Definition: pixfmt.h:482
AV_PIX_FMT_YUV422P14
#define AV_PIX_FMT_YUV422P14
Definition: pixfmt.h:487
AV_PIX_FMT_NONE
@ AV_PIX_FMT_NONE
Definition: pixfmt.h:72
AV_PIX_FMT_YUVA422P12
#define AV_PIX_FMT_YUVA422P12
Definition: pixfmt.h:519
avfilter.h
slice_start
static int slice_start(SliceContext *sc, VVCContext *s, VVCFrameContext *fc, const CodedBitstreamUnit *unit, const int is_first_slice)
Definition: dec.c:688
av_clip_uint8
#define av_clip_uint8
Definition: common.h:105
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
OFFSET
#define OFFSET(x)
Definition: vf_monochrome.c:270
AVFILTER_FLAG_SLICE_THREADS
#define AVFILTER_FLAG_SLICE_THREADS
The filter supports multithreading by splitting frames into multiple parts and processing them concur...
Definition: avfilter.h:117
desc
const char * desc
Definition: libsvtav1.c:75
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
AVPixFmtDescriptor
Descriptor that unambiguously describes how the bits of a pixel are stored in the up to 4 data planes...
Definition: pixdesc.h:69
FILTER_OUTPUTS
#define FILTER_OUTPUTS(array)
Definition: internal.h:183
monochrome_slice16
static int monochrome_slice16(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
Definition: vf_monochrome.c:118
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
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_PIX_FMT_YUV440P12
#define AV_PIX_FMT_YUV440P12
Definition: pixfmt.h:484
clear_slice16
static int clear_slice16(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
Definition: vf_monochrome.c:183
AV_PIX_FMT_YUV444P14
#define AV_PIX_FMT_YUV444P14
Definition: pixfmt.h:488
ff_filter_execute
static av_always_inline int ff_filter_execute(AVFilterContext *ctx, avfilter_action_func *func, void *arg, int *ret, int nb_jobs)
Definition: internal.h:134
int
int
Definition: ffmpeg_filter.c:424
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:486
AVFILTER_DEFINE_CLASS
AVFILTER_DEFINE_CLASS(monochrome)
AVFILTERPAD_FLAG_NEEDS_WRITABLE
#define AVFILTERPAD_FLAG_NEEDS_WRITABLE
The filter expects writable frames from its input link, duplicating data buffers if needed.
Definition: internal.h:52