FFmpeg
vf_extractplanes.c
Go to the documentation of this file.
1 /*
2  * Copyright (c) 2013 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 "libavutil/avstring.h"
22 #include "libavutil/imgutils.h"
23 #include "libavutil/opt.h"
24 #include "libavutil/pixdesc.h"
25 
26 #include "avfilter.h"
27 #include "drawutils.h"
28 #include "filters.h"
29 #include "internal.h"
30 
31 #define PLANE_R 0x01
32 #define PLANE_G 0x02
33 #define PLANE_B 0x04
34 #define PLANE_A 0x08
35 #define PLANE_Y 0x10
36 #define PLANE_U 0x20
37 #define PLANE_V 0x40
38 
39 typedef struct ExtractPlanesContext {
40  const AVClass *class;
41  int requested_planes;
42  int map[4];
43  int linesize[4];
44  int is_packed;
45  int depth;
46  int step;
47 } ExtractPlanesContext;
48 
49 #define OFFSET(x) offsetof(ExtractPlanesContext, x)
50 #define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM
51 static const AVOption extractplanes_options[] = {
52  { "planes", "set planes", OFFSET(requested_planes), AV_OPT_TYPE_FLAGS, {.i64=1}, 1, 0xff, FLAGS, "flags"},
53  { "y", "set luma plane", 0, AV_OPT_TYPE_CONST, {.i64=PLANE_Y}, 0, 0, FLAGS, "flags"},
54  { "u", "set u plane", 0, AV_OPT_TYPE_CONST, {.i64=PLANE_U}, 0, 0, FLAGS, "flags"},
55  { "v", "set v plane", 0, AV_OPT_TYPE_CONST, {.i64=PLANE_V}, 0, 0, FLAGS, "flags"},
56  { "r", "set red plane", 0, AV_OPT_TYPE_CONST, {.i64=PLANE_R}, 0, 0, FLAGS, "flags"},
57  { "g", "set green plane", 0, AV_OPT_TYPE_CONST, {.i64=PLANE_G}, 0, 0, FLAGS, "flags"},
58  { "b", "set blue plane", 0, AV_OPT_TYPE_CONST, {.i64=PLANE_B}, 0, 0, FLAGS, "flags"},
59  { "a", "set alpha plane", 0, AV_OPT_TYPE_CONST, {.i64=PLANE_A}, 0, 0, FLAGS, "flags"},
60  { NULL }
61 };
62 
63 AVFILTER_DEFINE_CLASS(extractplanes);
64 
65 #define EIGHTBIT_FORMATS \
66  AV_PIX_FMT_YUV410P, \
67  AV_PIX_FMT_YUV411P, \
68  AV_PIX_FMT_YUV440P, \
69  AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUVA420P, \
70  AV_PIX_FMT_YUV422P, AV_PIX_FMT_YUVA422P, \
71  AV_PIX_FMT_YUVJ420P, AV_PIX_FMT_YUVJ422P, \
72  AV_PIX_FMT_YUVJ440P, AV_PIX_FMT_YUVJ444P, \
73  AV_PIX_FMT_YUVJ411P, \
74  AV_PIX_FMT_YUV444P, AV_PIX_FMT_YUVA444P, \
75  AV_PIX_FMT_GRAY8, AV_PIX_FMT_GRAY8A, \
76  AV_PIX_FMT_RGB24, AV_PIX_FMT_BGR24, \
77  AV_PIX_FMT_RGBA, AV_PIX_FMT_BGRA, \
78  AV_PIX_FMT_ARGB, AV_PIX_FMT_ABGR, \
79  AV_PIX_FMT_RGB0, AV_PIX_FMT_BGR0, \
80  AV_PIX_FMT_0RGB, AV_PIX_FMT_0BGR, \
81  AV_PIX_FMT_GBRP, AV_PIX_FMT_GBRAP
82 
83 #define HIGHDEPTH_FORMATS(suf) \
84  AV_PIX_FMT_YA16##suf, AV_PIX_FMT_GRAY16##suf, \
85  AV_PIX_FMT_YUV420P16##suf, AV_PIX_FMT_YUVA420P16##suf, \
86  AV_PIX_FMT_YUV422P16##suf, AV_PIX_FMT_YUVA422P16##suf, \
87  AV_PIX_FMT_YUV444P16##suf, AV_PIX_FMT_YUVA444P16##suf, \
88  AV_PIX_FMT_RGB48##suf, AV_PIX_FMT_BGR48##suf, \
89  AV_PIX_FMT_RGBA64##suf, AV_PIX_FMT_BGRA64##suf, \
90  AV_PIX_FMT_GBRP16##suf, AV_PIX_FMT_GBRAP16##suf, \
91  AV_PIX_FMT_YUV420P10##suf, \
92  AV_PIX_FMT_YUV422P10##suf, \
93  AV_PIX_FMT_YUV444P10##suf, \
94  AV_PIX_FMT_YUV440P10##suf, \
95  AV_PIX_FMT_YUVA420P10##suf, \
96  AV_PIX_FMT_YUVA422P10##suf, \
97  AV_PIX_FMT_YUVA444P10##suf, \
98  AV_PIX_FMT_YUV420P12##suf, \
99  AV_PIX_FMT_YUV422P12##suf, \
100  AV_PIX_FMT_YUV444P12##suf, \
101  AV_PIX_FMT_YUV440P12##suf, \
102  AV_PIX_FMT_YUVA422P12##suf, \
103  AV_PIX_FMT_YUVA444P12##suf, \
104  AV_PIX_FMT_GBRP10##suf, AV_PIX_FMT_GBRAP10##suf, \
105  AV_PIX_FMT_GBRP12##suf, AV_PIX_FMT_GBRAP12##suf, \
106  AV_PIX_FMT_YUV420P9##suf, \
107  AV_PIX_FMT_YUV422P9##suf, \
108  AV_PIX_FMT_YUV444P9##suf, \
109  AV_PIX_FMT_YUVA420P9##suf, \
110  AV_PIX_FMT_YUVA422P9##suf, \
111  AV_PIX_FMT_YUVA444P9##suf, \
112  AV_PIX_FMT_GBRP9##suf, \
113  AV_PIX_FMT_GBRP14##suf, \
114  AV_PIX_FMT_YUV420P14##suf, \
115  AV_PIX_FMT_YUV422P14##suf, \
116  AV_PIX_FMT_YUV444P14##suf
117 
118 #define FLOAT_FORMATS(suf) \
119  AV_PIX_FMT_GRAYF32##suf, \
120  AV_PIX_FMT_GBRPF32##suf, AV_PIX_FMT_GBRAPF32##suf \
121 
122 static int query_formats(AVFilterContext *ctx)
123 {
124  static const enum AVPixelFormat in_pixfmts_le[] = {
125  EIGHTBIT_FORMATS,
126  HIGHDEPTH_FORMATS(LE),
127  FLOAT_FORMATS(LE),
128  AV_PIX_FMT_NONE,
129  };
130  static const enum AVPixelFormat in_pixfmts_be[] = {
131  EIGHTBIT_FORMATS,
132  HIGHDEPTH_FORMATS(BE),
133  FLOAT_FORMATS(BE),
134  AV_PIX_FMT_NONE,
135  };
136  static const enum AVPixelFormat out8_pixfmts[] = { AV_PIX_FMT_GRAY8, AV_PIX_FMT_NONE };
137  static const enum AVPixelFormat out9le_pixfmts[] = { AV_PIX_FMT_GRAY9LE, AV_PIX_FMT_NONE };
138  static const enum AVPixelFormat out9be_pixfmts[] = { AV_PIX_FMT_GRAY9BE, AV_PIX_FMT_NONE };
139  static const enum AVPixelFormat out10le_pixfmts[] = { AV_PIX_FMT_GRAY10LE, AV_PIX_FMT_NONE };
140  static const enum AVPixelFormat out10be_pixfmts[] = { AV_PIX_FMT_GRAY10BE, AV_PIX_FMT_NONE };
141  static const enum AVPixelFormat out12le_pixfmts[] = { AV_PIX_FMT_GRAY12LE, AV_PIX_FMT_NONE };
142  static const enum AVPixelFormat out12be_pixfmts[] = { AV_PIX_FMT_GRAY12BE, AV_PIX_FMT_NONE };
143  static const enum AVPixelFormat out14le_pixfmts[] = { AV_PIX_FMT_GRAY14LE, AV_PIX_FMT_NONE };
144  static const enum AVPixelFormat out14be_pixfmts[] = { AV_PIX_FMT_GRAY14BE, AV_PIX_FMT_NONE };
145  static const enum AVPixelFormat out16le_pixfmts[] = { AV_PIX_FMT_GRAY16LE, AV_PIX_FMT_NONE };
146  static const enum AVPixelFormat out16be_pixfmts[] = { AV_PIX_FMT_GRAY16BE, AV_PIX_FMT_NONE };
147  static const enum AVPixelFormat out32le_pixfmts[] = { AV_PIX_FMT_GRAYF32LE, AV_PIX_FMT_NONE };
148  static const enum AVPixelFormat out32be_pixfmts[] = { AV_PIX_FMT_GRAYF32BE, AV_PIX_FMT_NONE };
149  const enum AVPixelFormat *out_pixfmts, *in_pixfmts;
150  const AVPixFmtDescriptor *desc;
151  AVFilterFormats *avff;
152  int i, ret, depth = 0, be = 0;
153 
154  if (!ctx->inputs[0]->incfg.formats ||
155  !ctx->inputs[0]->incfg.formats->nb_formats) {
156  return AVERROR(EAGAIN);
157  }
158 
159  avff = ctx->inputs[0]->incfg.formats;
160  desc = av_pix_fmt_desc_get(avff->formats[0]);
161  depth = desc->comp[0].depth;
162  be = desc->flags & AV_PIX_FMT_FLAG_BE;
163  if (be) {
164  in_pixfmts = in_pixfmts_be;
165  } else {
166  in_pixfmts = in_pixfmts_le;
167  }
168  if (!ctx->inputs[0]->outcfg.formats)
169  if ((ret = ff_formats_ref(ff_make_format_list(in_pixfmts), &ctx->inputs[0]->outcfg.formats)) < 0)
170  return ret;
171 
172  for (i = 1; i < avff->nb_formats; i++) {
173  desc = av_pix_fmt_desc_get(avff->formats[i]);
174  if (depth != desc->comp[0].depth ||
175  be != (desc->flags & AV_PIX_FMT_FLAG_BE)) {
176  return AVERROR(EAGAIN);
177  }
178  }
179 
180  if (depth == 8)
181  out_pixfmts = out8_pixfmts;
182  else if (!be && depth == 9)
183  out_pixfmts = out9le_pixfmts;
184  else if (be && depth == 9)
185  out_pixfmts = out9be_pixfmts;
186  else if (!be && depth == 10)
187  out_pixfmts = out10le_pixfmts;
188  else if (be && depth == 10)
189  out_pixfmts = out10be_pixfmts;
190  else if (!be && depth == 12)
191  out_pixfmts = out12le_pixfmts;
192  else if (be && depth == 12)
193  out_pixfmts = out12be_pixfmts;
194  else if (!be && depth == 14)
195  out_pixfmts = out14le_pixfmts;
196  else if (be && depth == 14)
197  out_pixfmts = out14be_pixfmts;
198  else if (be && depth == 16)
199  out_pixfmts = out16be_pixfmts;
200  else if (!be && depth == 16)
201  out_pixfmts = out16le_pixfmts;
202  else if (be && depth == 32)
203  out_pixfmts = out32be_pixfmts;
204  else
205  out_pixfmts = out32le_pixfmts;
206 
207  for (i = 0; i < ctx->nb_outputs; i++)
208  if ((ret = ff_formats_ref(ff_make_format_list(out_pixfmts), &ctx->outputs[i]->incfg.formats)) < 0)
209  return ret;
210  return 0;
211 }
212 
213 static int config_input(AVFilterLink *inlink)
214 {
215  AVFilterContext *ctx = inlink->dst;
216  ExtractPlanesContext *s = ctx->priv;
217  const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format);
218  int plane_avail, ret, i;
219  uint8_t rgba_map[4];
220 
221  plane_avail = ((desc->flags & AV_PIX_FMT_FLAG_RGB) ? PLANE_R|PLANE_G|PLANE_B :
222  PLANE_Y |
223  ((desc->nb_components > 2) ? PLANE_U|PLANE_V : 0)) |
224  ((desc->flags & AV_PIX_FMT_FLAG_ALPHA) ? PLANE_A : 0);
225  if (s->requested_planes & ~plane_avail) {
226  av_log(ctx, AV_LOG_ERROR, "Requested planes not available.\n");
227  return AVERROR(EINVAL);
228  }
229  if ((ret = av_image_fill_linesizes(s->linesize, inlink->format, inlink->w)) < 0)
230  return ret;
231 
232  s->depth = desc->comp[0].depth >> 3;
233  s->step = av_get_padded_bits_per_pixel(desc) >> 3;
234  s->is_packed = !(desc->flags & AV_PIX_FMT_FLAG_PLANAR) &&
235  (desc->nb_components > 1);
236  if (desc->flags & AV_PIX_FMT_FLAG_RGB) {
237  ff_fill_rgba_map(rgba_map, inlink->format);
238  for (i = 0; i < 4; i++)
239  s->map[i] = rgba_map[s->map[i]];
240  }
241 
242  return 0;
243 }
244 
245 static int config_output(AVFilterLink *outlink)
246 {
247  AVFilterContext *ctx = outlink->src;
248  AVFilterLink *inlink = ctx->inputs[0];
249  ExtractPlanesContext *s = ctx->priv;
250  const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format);
251  const int output = outlink->srcpad - ctx->output_pads;
252 
253  if (s->map[output] == 1 || s->map[output] == 2) {
254  outlink->h = AV_CEIL_RSHIFT(inlink->h, desc->log2_chroma_h);
255  outlink->w = AV_CEIL_RSHIFT(inlink->w, desc->log2_chroma_w);
256  }
257 
258  return 0;
259 }
260 
261 static void extract_from_packed(uint8_t *dst, int dst_linesize,
262  const uint8_t *src, int src_linesize,
263  int width, int height,
264  int depth, int step, int comp)
265 {
266  int x, y;
267 
268  for (y = 0; y < height; y++) {
269  switch (depth) {
270  case 1:
271  for (x = 0; x < width; x++)
272  dst[x] = src[x * step + comp];
273  break;
274  case 2:
275  for (x = 0; x < width; x++) {
276  dst[x * 2 ] = src[x * step + comp * 2 ];
277  dst[x * 2 + 1] = src[x * step + comp * 2 + 1];
278  }
279  break;
280  }
281  dst += dst_linesize;
282  src += src_linesize;
283  }
284 }
285 
286 static int filter_frame(AVFilterLink *inlink, AVFrame *frame)
287 {
288  AVFilterContext *ctx = inlink->dst;
289  ExtractPlanesContext *s = ctx->priv;
290  int i, eof = 0, ret = 0;
291 
292  for (i = 0; i < ctx->nb_outputs; i++) {
293  AVFilterLink *outlink = ctx->outputs[i];
294  const int idx = s->map[i];
295  AVFrame *out;
296 
297  if (ff_outlink_get_status(outlink))
298  continue;
299 
300  out = ff_get_video_buffer(outlink, outlink->w, outlink->h);
301  if (!out) {
302  ret = AVERROR(ENOMEM);
303  break;
304  }
305  av_frame_copy_props(out, frame);
306 
307  if (s->is_packed) {
308  extract_from_packed(out->data[0], out->linesize[0],
309  frame->data[0], frame->linesize[0],
310  outlink->w, outlink->h,
311  s->depth,
312  s->step, idx);
313  } else {
314  av_image_copy_plane(out->data[0], out->linesize[0],
315  frame->data[idx], frame->linesize[idx],
316  s->linesize[idx], outlink->h);
317  }
318 
319  ret = ff_filter_frame(outlink, out);
320  if (ret == AVERROR_EOF)
321  eof++;
322  else if (ret < 0)
323  break;
324  }
325  av_frame_free(&frame);
326 
327  if (eof == ctx->nb_outputs)
328  ret = AVERROR_EOF;
329  else if (ret == AVERROR_EOF)
330  ret = 0;
331  return ret;
332 }
333 
334 static av_cold int init(AVFilterContext *ctx)
335 {
336  ExtractPlanesContext *s = ctx->priv;
337  int planes = (s->requested_planes & 0xf) | (s->requested_planes >> 4);
338  int i, ret;
339 
340  for (i = 0; i < 4; i++) {
341  char *name;
342  AVFilterPad pad = { 0 };
343 
344  if (!(planes & (1 << i)))
345  continue;
346 
347  name = av_asprintf("out%d", ctx->nb_outputs);
348  if (!name)
349  return AVERROR(ENOMEM);
350  s->map[ctx->nb_outputs] = i;
351  pad.name = name;
352  pad.type = AVMEDIA_TYPE_VIDEO;
353  pad.config_props = config_output;
354 
355  if ((ret = ff_append_outpad_free_name(ctx, &pad)) < 0)
356  return ret;
357  }
358 
359  return 0;
360 }
361 
362 static const AVFilterPad extractplanes_inputs[] = {
363  {
364  .name = "default",
365  .type = AVMEDIA_TYPE_VIDEO,
366  .filter_frame = filter_frame,
367  .config_props = config_input,
368  },
369 };
370 
371 const AVFilter ff_vf_extractplanes = {
372  .name = "extractplanes",
373  .description = NULL_IF_CONFIG_SMALL("Extract planes as grayscale frames."),
374  .priv_size = sizeof(ExtractPlanesContext),
375  .priv_class = &extractplanes_class,
376  .init = init,
377  FILTER_INPUTS(extractplanes_inputs),
378  .outputs = NULL,
379  FILTER_QUERY_FUNC(query_formats),
380  .flags = AVFILTER_FLAG_DYNAMIC_OUTPUTS,
381 };
382 
383 #if CONFIG_ALPHAEXTRACT_FILTER
384 
385 static av_cold int init_alphaextract(AVFilterContext *ctx)
386 {
387  ExtractPlanesContext *s = ctx->priv;
388 
389  s->requested_planes = PLANE_A;
390  s->map[0] = 3;
391 
392  return 0;
393 }
394 
395 static const AVFilterPad alphaextract_outputs[] = {
396  {
397  .name = "default",
398  .type = AVMEDIA_TYPE_VIDEO,
399  .config_props = config_output,
400  },
401 };
402 
403 const AVFilter ff_vf_alphaextract = {
404  .name = "alphaextract",
405  .description = NULL_IF_CONFIG_SMALL("Extract an alpha channel as a "
406  "grayscale image component."),
407  .priv_size = sizeof(ExtractPlanesContext),
408  .init = init_alphaextract,
409  FILTER_INPUTS(extractplanes_inputs),
410  FILTER_OUTPUTS(alphaextract_outputs),
411  FILTER_QUERY_FUNC(query_formats),
412 };
413 #endif /* CONFIG_ALPHAEXTRACT_FILTER */
ff_vf_extractplanes
const AVFilter ff_vf_extractplanes
Definition: vf_extractplanes.c:371
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:98
be
it s the only field you need to keep assuming you have a context There is some magic you don t need to care about around this just let it be(in the first position) for now. Options ------- Then comes the options array. This is what will define the user accessible options. For example
AV_PIX_FMT_GRAY10BE
@ AV_PIX_FMT_GRAY10BE
Y , 10bpp, big-endian.
Definition: pixfmt.h:287
AVPixelFormat
AVPixelFormat
Pixel format.
Definition: pixfmt.h:64
name
it s the only field you need to keep assuming you have a context There is some magic you don t need to care about around this just let it vf default minimum maximum flags name is the option name
Definition: writing_filters.txt:88
extractplanes_options
static const AVOption extractplanes_options[]
Definition: vf_extractplanes.c:51
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
ff_make_format_list
AVFilterFormats * ff_make_format_list(const int *fmts)
Create a list of supported formats.
Definition: formats.c:381
out
FILE * out
Definition: movenc.c:54
comp
static void comp(unsigned char *dst, ptrdiff_t dst_stride, unsigned char *src, ptrdiff_t src_stride, int add)
Definition: eamad.c:85
ff_filter_frame
int ff_filter_frame(AVFilterLink *link, AVFrame *frame)
Send a frame of data to the next filter.
Definition: avfilter.c:1018
av_pix_fmt_desc_get
const AVPixFmtDescriptor * av_pix_fmt_desc_get(enum AVPixelFormat pix_fmt)
Definition: pixdesc.c:2660
AVERROR_EOF
#define AVERROR_EOF
End of file.
Definition: error.h:57
output
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 output
Definition: filter_design.txt:225
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_asprintf
char * av_asprintf(const char *fmt,...)
Definition: avstring.c:113
av_frame_free
void av_frame_free(AVFrame **frame)
Free the frame and any dynamically allocated objects in it, e.g.
Definition: frame.c:109
AVFrame
This structure describes decoded (raw) audio or video data.
Definition: frame.h:317
pixdesc.h
step
trying all byte sequences megabyte in length and selecting the best looking sequence will yield cases to try But a word about which is also called distortion Distortion can be quantified by almost any quality measurement one chooses the sum of squared differences is used but more complex methods that consider psychovisual effects can be used as well It makes no difference in this discussion First step
Definition: rate_distortion.txt:58
ExtractPlanesContext::requested_planes
int requested_planes
Definition: vf_extractplanes.c:41
ExtractPlanesContext::linesize
int linesize[4]
Definition: vf_extractplanes.c:43
FLAGS
#define FLAGS
Definition: vf_extractplanes.c:50
AVOption
AVOption.
Definition: opt.h:247
FILTER_QUERY_FUNC
#define FILTER_QUERY_FUNC(func)
Definition: internal.h:168
AVFilterFormats::formats
int * formats
list of media formats
Definition: formats.h:66
AVFilter::name
const char * name
Filter name.
Definition: avfilter.h:169
AV_PIX_FMT_GRAY10LE
@ AV_PIX_FMT_GRAY10LE
Y , 10bpp, little-endian.
Definition: pixfmt.h:288
AV_PIX_FMT_GRAYF32LE
@ AV_PIX_FMT_GRAYF32LE
IEEE-754 single precision Y, 32bpp, little-endian.
Definition: pixfmt.h:331
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
AVFilterFormats
A list of supported formats for one end of a filter link.
Definition: formats.h:64
AV_PIX_FMT_GRAY16BE
@ AV_PIX_FMT_GRAY16BE
Y , 16bpp, big-endian.
Definition: pixfmt.h:97
PLANE_A
#define PLANE_A
Definition: vf_extractplanes.c:34
ExtractPlanesContext::map
int map[4]
Definition: vf_extractplanes.c:42
ff_vf_alphaextract
const AVFilter ff_vf_alphaextract
AV_PIX_FMT_GRAY9LE
@ AV_PIX_FMT_GRAY9LE
Y , 9bpp, little-endian.
Definition: pixfmt.h:306
PLANE_B
#define PLANE_B
Definition: vf_extractplanes.c:33
AVFilterPad
A filter pad used for either input or output.
Definition: internal.h:50
extract_from_packed
static void extract_from_packed(uint8_t *dst, int dst_linesize, const uint8_t *src, int src_linesize, int width, int height, int depth, int step, int comp)
Definition: vf_extractplanes.c:261
AV_LOG_ERROR
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:180
av_cold
#define av_cold
Definition: attributes.h:90
PLANE_Y
#define PLANE_Y
Definition: vf_extractplanes.c:35
width
#define width
av_image_fill_linesizes
int av_image_fill_linesizes(int linesizes[4], enum AVPixelFormat pix_fmt, int width)
Fill plane linesizes for an image with pixel format pix_fmt and width width.
Definition: imgutils.c:89
s
#define s(width, name)
Definition: cbs_vp9.c:257
AV_CEIL_RSHIFT
#define AV_CEIL_RSHIFT(a, b)
Definition: common.h:51
ff_formats_ref
int ff_formats_ref(AVFilterFormats *f, AVFilterFormats **ref)
Add *ref as a new reference to formats.
Definition: formats.c:555
filters.h
AV_PIX_FMT_FLAG_ALPHA
#define AV_PIX_FMT_FLAG_ALPHA
The pixel format has an alpha channel.
Definition: pixdesc.h:147
ctx
AVFormatContext * ctx
Definition: movenc.c:48
ExtractPlanesContext
Definition: vf_extractplanes.c:39
init
static av_cold int init(AVFilterContext *ctx)
Definition: vf_extractplanes.c:334
FILTER_INPUTS
#define FILTER_INPUTS(array)
Definition: internal.h:191
planes
static const struct @321 planes[]
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:537
src
#define src
Definition: vp8dsp.c:255
AVFilterFormats::nb_formats
unsigned nb_formats
number of formats
Definition: formats.h:65
PLANE_G
#define PLANE_G
Definition: vf_extractplanes.c:32
AV_PIX_FMT_GRAY8
@ AV_PIX_FMT_GRAY8
Y , 8bpp.
Definition: pixfmt.h:74
AVFILTER_FLAG_DYNAMIC_OUTPUTS
#define AVFILTER_FLAG_DYNAMIC_OUTPUTS
The number of the filter outputs is not determined just by AVFilter.outputs.
Definition: avfilter.h:116
AVFilterPad::config_props
int(* config_props)(AVFilterLink *link)
Link configuration callback.
Definition: internal.h:130
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:117
av_get_padded_bits_per_pixel
int av_get_padded_bits_per_pixel(const AVPixFmtDescriptor *pixdesc)
Return the number of bits per pixel for the pixel format described by pixdesc, including any padding ...
Definition: pixdesc.c:2625
AV_PIX_FMT_FLAG_RGB
#define AV_PIX_FMT_FLAG_RGB
The pixel format contains RGB-like data (as opposed to YUV/grayscale).
Definition: pixdesc.h:136
AV_PIX_FMT_GRAY12LE
@ AV_PIX_FMT_GRAY12LE
Y , 12bpp, little-endian.
Definition: pixfmt.h:286
ExtractPlanesContext::is_packed
int is_packed
Definition: vf_extractplanes.c:44
config_output
static int config_output(AVFilterLink *outlink)
Definition: vf_extractplanes.c:245
height
#define height
OFFSET
#define OFFSET(x)
Definition: vf_extractplanes.c:49
extractplanes_inputs
static const AVFilterPad extractplanes_inputs[]
Definition: vf_extractplanes.c:362
internal.h
i
#define i(width, name, range_min, range_max)
Definition: cbs_h2645.c:271
AV_PIX_FMT_GRAY9BE
@ AV_PIX_FMT_GRAY9BE
Y , 9bpp, big-endian.
Definition: pixfmt.h:305
FLOAT_FORMATS
#define FLOAT_FORMATS(suf)
Definition: vf_extractplanes.c:118
AV_PIX_FMT_FLAG_BE
#define AV_PIX_FMT_FLAG_BE
Pixel format is big-endian.
Definition: pixdesc.h:116
AVFilterPad::name
const char * name
Pad name.
Definition: internal.h:56
AVFilter
Filter definition.
Definition: avfilter.h:165
AV_PIX_FMT_GRAY12BE
@ AV_PIX_FMT_GRAY12BE
Y , 12bpp, big-endian.
Definition: pixfmt.h:285
ret
ret
Definition: filter_design.txt:187
AVFilterPad::type
enum AVMediaType type
AVFilterPad type.
Definition: internal.h:61
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_GRAYF32BE
@ AV_PIX_FMT_GRAYF32BE
IEEE-754 single precision Y, 32bpp, big-endian.
Definition: pixfmt.h:330
AV_PIX_FMT_NONE
@ AV_PIX_FMT_NONE
Definition: pixfmt.h:65
avfilter.h
AV_PIX_FMT_FLAG_PLANAR
#define AV_PIX_FMT_FLAG_PLANAR
At least one pixel component is not in the first data plane.
Definition: pixdesc.h:132
ff_outlink_get_status
int ff_outlink_get_status(AVFilterLink *link)
Get the status on an output link.
Definition: avfilter.c:1557
AVFilterContext
An instance of a filter.
Definition: avfilter.h:402
desc
const char * desc
Definition: libsvtav1.c:79
AVMEDIA_TYPE_VIDEO
@ AVMEDIA_TYPE_VIDEO
Definition: avutil.h:201
AV_PIX_FMT_GRAY16LE
@ AV_PIX_FMT_GRAY16LE
Y , 16bpp, little-endian.
Definition: pixfmt.h:98
filter_frame
static int filter_frame(AVFilterLink *inlink, AVFrame *frame)
Definition: vf_extractplanes.c:286
AVPixFmtDescriptor
Descriptor that unambiguously describes how the bits of a pixel are stored in the up to 4 data planes...
Definition: pixdesc.h:69
ExtractPlanesContext::depth
int depth
Definition: vf_extractplanes.c:45
PLANE_U
#define PLANE_U
Definition: vf_extractplanes.c:36
AV_PIX_FMT_GRAY14LE
@ AV_PIX_FMT_GRAY14LE
Y , 14bpp, little-endian.
Definition: pixfmt.h:328
ExtractPlanesContext::step
int step
Definition: vf_extractplanes.c:46
FILTER_OUTPUTS
#define FILTER_OUTPUTS(array)
Definition: internal.h:192
ff_append_outpad_free_name
int ff_append_outpad_free_name(AVFilterContext *f, AVFilterPad *p)
Definition: avfilter.c:155
AV_PIX_FMT_GRAY14BE
@ AV_PIX_FMT_GRAY14BE
Y , 14bpp, big-endian.
Definition: pixfmt.h:327
ff_fill_rgba_map
int ff_fill_rgba_map(uint8_t *rgba_map, enum AVPixelFormat pix_fmt)
Definition: drawutils.c:34
AV_OPT_TYPE_FLAGS
@ AV_OPT_TYPE_FLAGS
Definition: opt.h:223
imgutils.h
av_log
#define av_log(a,...)
Definition: tableprint_vlc.h:28
avstring.h
drawutils.h
HIGHDEPTH_FORMATS
#define HIGHDEPTH_FORMATS(suf)
Definition: vf_extractplanes.c:83
config_input
static int config_input(AVFilterLink *inlink)
Definition: vf_extractplanes.c:213
PLANE_V
#define PLANE_V
Definition: vf_extractplanes.c:37
PLANE_R
#define PLANE_R
Definition: vf_extractplanes.c:31
AVFILTER_DEFINE_CLASS
AVFILTER_DEFINE_CLASS(extractplanes)
EIGHTBIT_FORMATS
#define EIGHTBIT_FORMATS
Definition: vf_extractplanes.c:65
AV_OPT_TYPE_CONST
@ AV_OPT_TYPE_CONST
Definition: opt.h:233
query_formats
static int query_formats(AVFilterContext *ctx)
Definition: vf_extractplanes.c:122
Generated on Wed Aug 24 2022 21:38:13 for FFmpeg by   doxygen 1.8.17