FFmpeg
vf_extractplanes.c
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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 "config_components.h"
22 
23 #include "libavutil/avstring.h"
24 #include "libavutil/imgutils.h"
25 #include "libavutil/opt.h"
26 #include "libavutil/pixdesc.h"
27 
28 #include "avfilter.h"
29 #include "drawutils.h"
30 #include "filters.h"
31 #include "formats.h"
32 #include "internal.h"
33 #include "video.h"
34 
35 #define PLANE_R 0x01
36 #define PLANE_G 0x02
37 #define PLANE_B 0x04
38 #define PLANE_A 0x08
39 #define PLANE_Y 0x10
40 #define PLANE_U 0x20
41 #define PLANE_V 0x40
42 
43 typedef struct ExtractPlanesContext {
44  const AVClass *class;
45  int requested_planes;
46  int map[4];
47  int linesize[4];
48  int is_packed;
49  int depth;
50  int step;
51 } ExtractPlanesContext;
52 
53 #define OFFSET(x) offsetof(ExtractPlanesContext, x)
54 #define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM
55 static const AVOption extractplanes_options[] = {
56  { "planes", "set planes", OFFSET(requested_planes), AV_OPT_TYPE_FLAGS, {.i64=1}, 1, 0xff, FLAGS, "flags"},
57  { "y", "set luma plane", 0, AV_OPT_TYPE_CONST, {.i64=PLANE_Y}, 0, 0, FLAGS, "flags"},
58  { "u", "set u plane", 0, AV_OPT_TYPE_CONST, {.i64=PLANE_U}, 0, 0, FLAGS, "flags"},
59  { "v", "set v plane", 0, AV_OPT_TYPE_CONST, {.i64=PLANE_V}, 0, 0, FLAGS, "flags"},
60  { "r", "set red plane", 0, AV_OPT_TYPE_CONST, {.i64=PLANE_R}, 0, 0, FLAGS, "flags"},
61  { "g", "set green plane", 0, AV_OPT_TYPE_CONST, {.i64=PLANE_G}, 0, 0, FLAGS, "flags"},
62  { "b", "set blue plane", 0, AV_OPT_TYPE_CONST, {.i64=PLANE_B}, 0, 0, FLAGS, "flags"},
63  { "a", "set alpha plane", 0, AV_OPT_TYPE_CONST, {.i64=PLANE_A}, 0, 0, FLAGS, "flags"},
64  { NULL }
65 };
66 
67 AVFILTER_DEFINE_CLASS(extractplanes);
68 
69 #define EIGHTBIT_FORMATS \
70  AV_PIX_FMT_YUV410P, \
71  AV_PIX_FMT_YUV411P, \
72  AV_PIX_FMT_YUV440P, \
73  AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUVA420P, \
74  AV_PIX_FMT_YUV422P, AV_PIX_FMT_YUVA422P, \
75  AV_PIX_FMT_YUVJ420P, AV_PIX_FMT_YUVJ422P, \
76  AV_PIX_FMT_YUVJ440P, AV_PIX_FMT_YUVJ444P, \
77  AV_PIX_FMT_YUVJ411P, \
78  AV_PIX_FMT_YUV444P, AV_PIX_FMT_YUVA444P, \
79  AV_PIX_FMT_GRAY8, AV_PIX_FMT_GRAY8A, \
80  AV_PIX_FMT_RGB24, AV_PIX_FMT_BGR24, \
81  AV_PIX_FMT_RGBA, AV_PIX_FMT_BGRA, \
82  AV_PIX_FMT_ARGB, AV_PIX_FMT_ABGR, \
83  AV_PIX_FMT_RGB0, AV_PIX_FMT_BGR0, \
84  AV_PIX_FMT_0RGB, AV_PIX_FMT_0BGR, \
85  AV_PIX_FMT_GBRP, AV_PIX_FMT_GBRAP
86 
87 #define HIGHDEPTH_FORMATS(suf) \
88  AV_PIX_FMT_YA16##suf, \
89  AV_PIX_FMT_GRAY9##suf, \
90  AV_PIX_FMT_GRAY10##suf, \
91  AV_PIX_FMT_GRAY12##suf, \
92  AV_PIX_FMT_GRAY14##suf, \
93  AV_PIX_FMT_GRAY16##suf, \
94  AV_PIX_FMT_YUV420P16##suf, AV_PIX_FMT_YUVA420P16##suf, \
95  AV_PIX_FMT_YUV422P16##suf, AV_PIX_FMT_YUVA422P16##suf, \
96  AV_PIX_FMT_YUV444P16##suf, AV_PIX_FMT_YUVA444P16##suf, \
97  AV_PIX_FMT_RGB48##suf, AV_PIX_FMT_BGR48##suf, \
98  AV_PIX_FMT_RGBA64##suf, AV_PIX_FMT_BGRA64##suf, \
99  AV_PIX_FMT_GBRP16##suf, AV_PIX_FMT_GBRAP16##suf, \
100  AV_PIX_FMT_YUV420P10##suf, \
101  AV_PIX_FMT_YUV422P10##suf, \
102  AV_PIX_FMT_YUV444P10##suf, \
103  AV_PIX_FMT_YUV440P10##suf, \
104  AV_PIX_FMT_YUVA420P10##suf, \
105  AV_PIX_FMT_YUVA422P10##suf, \
106  AV_PIX_FMT_YUVA444P10##suf, \
107  AV_PIX_FMT_YUV420P12##suf, \
108  AV_PIX_FMT_YUV422P12##suf, \
109  AV_PIX_FMT_YUV444P12##suf, \
110  AV_PIX_FMT_YUV440P12##suf, \
111  AV_PIX_FMT_YUVA422P12##suf, \
112  AV_PIX_FMT_YUVA444P12##suf, \
113  AV_PIX_FMT_GBRP10##suf, AV_PIX_FMT_GBRAP10##suf, \
114  AV_PIX_FMT_GBRP12##suf, AV_PIX_FMT_GBRAP12##suf, \
115  AV_PIX_FMT_YUV420P9##suf, \
116  AV_PIX_FMT_YUV422P9##suf, \
117  AV_PIX_FMT_YUV444P9##suf, \
118  AV_PIX_FMT_YUVA420P9##suf, \
119  AV_PIX_FMT_YUVA422P9##suf, \
120  AV_PIX_FMT_YUVA444P9##suf, \
121  AV_PIX_FMT_GBRP9##suf, \
122  AV_PIX_FMT_GBRP14##suf, \
123  AV_PIX_FMT_YUV420P14##suf, \
124  AV_PIX_FMT_YUV422P14##suf, \
125  AV_PIX_FMT_YUV444P14##suf
126 
127 #define FLOAT_FORMATS(suf) \
128  AV_PIX_FMT_GRAYF32##suf, \
129  AV_PIX_FMT_RGBF32##suf, AV_PIX_FMT_RGBAF32##suf, \
130  AV_PIX_FMT_GBRPF32##suf, AV_PIX_FMT_GBRAPF32##suf \
131 
132 static int query_formats(AVFilterContext *ctx)
133 {
134  static const enum AVPixelFormat in_pixfmts_le[] = {
135  EIGHTBIT_FORMATS,
136  HIGHDEPTH_FORMATS(LE),
137  FLOAT_FORMATS(LE),
138  AV_PIX_FMT_NONE,
139  };
140  static const enum AVPixelFormat in_pixfmts_be[] = {
141  EIGHTBIT_FORMATS,
142  HIGHDEPTH_FORMATS(BE),
143  FLOAT_FORMATS(BE),
144  AV_PIX_FMT_NONE,
145  };
146  static const enum AVPixelFormat out8_pixfmts[] = { AV_PIX_FMT_GRAY8, AV_PIX_FMT_NONE };
147  static const enum AVPixelFormat out9le_pixfmts[] = { AV_PIX_FMT_GRAY9LE, AV_PIX_FMT_NONE };
148  static const enum AVPixelFormat out9be_pixfmts[] = { AV_PIX_FMT_GRAY9BE, AV_PIX_FMT_NONE };
149  static const enum AVPixelFormat out10le_pixfmts[] = { AV_PIX_FMT_GRAY10LE, AV_PIX_FMT_NONE };
150  static const enum AVPixelFormat out10be_pixfmts[] = { AV_PIX_FMT_GRAY10BE, AV_PIX_FMT_NONE };
151  static const enum AVPixelFormat out12le_pixfmts[] = { AV_PIX_FMT_GRAY12LE, AV_PIX_FMT_NONE };
152  static const enum AVPixelFormat out12be_pixfmts[] = { AV_PIX_FMT_GRAY12BE, AV_PIX_FMT_NONE };
153  static const enum AVPixelFormat out14le_pixfmts[] = { AV_PIX_FMT_GRAY14LE, AV_PIX_FMT_NONE };
154  static const enum AVPixelFormat out14be_pixfmts[] = { AV_PIX_FMT_GRAY14BE, AV_PIX_FMT_NONE };
155  static const enum AVPixelFormat out16le_pixfmts[] = { AV_PIX_FMT_GRAY16LE, AV_PIX_FMT_NONE };
156  static const enum AVPixelFormat out16be_pixfmts[] = { AV_PIX_FMT_GRAY16BE, AV_PIX_FMT_NONE };
157  static const enum AVPixelFormat out32le_pixfmts[] = { AV_PIX_FMT_GRAYF32LE, AV_PIX_FMT_NONE };
158  static const enum AVPixelFormat out32be_pixfmts[] = { AV_PIX_FMT_GRAYF32BE, AV_PIX_FMT_NONE };
159  const enum AVPixelFormat *out_pixfmts, *in_pixfmts;
160  const AVPixFmtDescriptor *desc;
161  AVFilterFormats *avff;
162  int i, ret, depth = 0, be = 0;
163 
164  if (!ctx->inputs[0]->incfg.formats ||
165  !ctx->inputs[0]->incfg.formats->nb_formats) {
166  return AVERROR(EAGAIN);
167  }
168 
169  avff = ctx->inputs[0]->incfg.formats;
170  desc = av_pix_fmt_desc_get(avff->formats[0]);
171  depth = desc->comp[0].depth;
172  be = desc->flags & AV_PIX_FMT_FLAG_BE;
173  if (be) {
174  in_pixfmts = in_pixfmts_be;
175  } else {
176  in_pixfmts = in_pixfmts_le;
177  }
178  if (!ctx->inputs[0]->outcfg.formats)
179  if ((ret = ff_formats_ref(ff_make_format_list(in_pixfmts), &ctx->inputs[0]->outcfg.formats)) < 0)
180  return ret;
181 
182  for (i = 1; i < avff->nb_formats; i++) {
183  desc = av_pix_fmt_desc_get(avff->formats[i]);
184  if (depth != desc->comp[0].depth ||
185  be != (desc->flags & AV_PIX_FMT_FLAG_BE)) {
186  return AVERROR(EAGAIN);
187  }
188  }
189 
190  if (depth == 8)
191  out_pixfmts = out8_pixfmts;
192  else if (!be && depth == 9)
193  out_pixfmts = out9le_pixfmts;
194  else if (be && depth == 9)
195  out_pixfmts = out9be_pixfmts;
196  else if (!be && depth == 10)
197  out_pixfmts = out10le_pixfmts;
198  else if (be && depth == 10)
199  out_pixfmts = out10be_pixfmts;
200  else if (!be && depth == 12)
201  out_pixfmts = out12le_pixfmts;
202  else if (be && depth == 12)
203  out_pixfmts = out12be_pixfmts;
204  else if (!be && depth == 14)
205  out_pixfmts = out14le_pixfmts;
206  else if (be && depth == 14)
207  out_pixfmts = out14be_pixfmts;
208  else if (be && depth == 16)
209  out_pixfmts = out16be_pixfmts;
210  else if (!be && depth == 16)
211  out_pixfmts = out16le_pixfmts;
212  else if (be && depth == 32)
213  out_pixfmts = out32be_pixfmts;
214  else
215  out_pixfmts = out32le_pixfmts;
216 
217  for (i = 0; i < ctx->nb_outputs; i++)
218  if ((ret = ff_formats_ref(ff_make_format_list(out_pixfmts), &ctx->outputs[i]->incfg.formats)) < 0)
219  return ret;
220  return 0;
221 }
222 
223 static int config_input(AVFilterLink *inlink)
224 {
225  AVFilterContext *ctx = inlink->dst;
226  ExtractPlanesContext *s = ctx->priv;
227  const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format);
228  int plane_avail, ret, i;
229  uint8_t rgba_map[4];
230 
231  plane_avail = ((desc->flags & AV_PIX_FMT_FLAG_RGB) ? PLANE_R|PLANE_G|PLANE_B :
232  PLANE_Y |
233  ((desc->nb_components > 2) ? PLANE_U|PLANE_V : 0)) |
234  ((desc->flags & AV_PIX_FMT_FLAG_ALPHA) ? PLANE_A : 0);
235  if (s->requested_planes & ~plane_avail) {
236  av_log(ctx, AV_LOG_ERROR, "Requested planes not available.\n");
237  return AVERROR(EINVAL);
238  }
239  if ((ret = av_image_fill_linesizes(s->linesize, inlink->format, inlink->w)) < 0)
240  return ret;
241 
242  s->depth = desc->comp[0].depth >> 3;
243  s->step = av_get_padded_bits_per_pixel(desc) >> 3;
244  s->is_packed = !(desc->flags & AV_PIX_FMT_FLAG_PLANAR) &&
245  (desc->nb_components > 1);
246  if (desc->flags & AV_PIX_FMT_FLAG_RGB) {
247  ff_fill_rgba_map(rgba_map, inlink->format);
248  for (i = 0; i < 4; i++)
249  s->map[i] = rgba_map[s->map[i]];
250  }
251 
252  return 0;
253 }
254 
255 static int config_output(AVFilterLink *outlink)
256 {
257  AVFilterContext *ctx = outlink->src;
258  AVFilterLink *inlink = ctx->inputs[0];
259  ExtractPlanesContext *s = ctx->priv;
260  const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format);
261  const int output = outlink->srcpad - ctx->output_pads;
262 
263  if (s->map[output] == 1 || s->map[output] == 2) {
264  outlink->h = AV_CEIL_RSHIFT(inlink->h, desc->log2_chroma_h);
265  outlink->w = AV_CEIL_RSHIFT(inlink->w, desc->log2_chroma_w);
266  }
267 
268  return 0;
269 }
270 
271 static void extract_from_packed(uint8_t *dst, int dst_linesize,
272  const uint8_t *src, int src_linesize,
273  int width, int height,
274  int depth, int step, int comp)
275 {
276  int x, y;
277 
278  for (y = 0; y < height; y++) {
279  switch (depth) {
280  case 1:
281  for (x = 0; x < width; x++)
282  dst[x] = src[x * step + comp];
283  break;
284  case 2:
285  for (x = 0; x < width; x++) {
286  dst[x * 2 ] = src[x * step + comp * 2 ];
287  dst[x * 2 + 1] = src[x * step + comp * 2 + 1];
288  }
289  break;
290  case 4:
291  for (x = 0; x < width; x++) {
292  dst[x * 4 ] = src[x * step + comp * 4 ];
293  dst[x * 4 + 1] = src[x * step + comp * 4 + 1];
294  dst[x * 4 + 2] = src[x * step + comp * 4 + 2];
295  dst[x * 4 + 3] = src[x * step + comp * 4 + 3];
296  }
297  break;
298  }
299  dst += dst_linesize;
300  src += src_linesize;
301  }
302 }
303 
304 static int extract_plane(AVFilterLink *outlink, AVFrame *frame)
305 {
306  AVFilterContext *ctx = outlink->src;
307  ExtractPlanesContext *s = ctx->priv;
308  const int idx = s->map[FF_OUTLINK_IDX(outlink)];
309  AVFrame *out;
310 
311  out = ff_get_video_buffer(outlink, outlink->w, outlink->h);
312  if (!out)
313  return AVERROR(ENOMEM);
314  av_frame_copy_props(out, frame);
315 
316  if (s->is_packed) {
317  extract_from_packed(out->data[0], out->linesize[0],
318  frame->data[0], frame->linesize[0],
319  outlink->w, outlink->h,
320  s->depth,
321  s->step, idx);
322  } else {
323  av_image_copy_plane(out->data[0], out->linesize[0],
324  frame->data[idx], frame->linesize[idx],
325  s->linesize[idx], outlink->h);
326  }
327 
328  return ff_filter_frame(outlink, out);
329 }
330 
331 static int activate(AVFilterContext *ctx)
332 {
333  AVFilterLink *inlink = ctx->inputs[0];
334  int status, ret;
335  AVFrame *in;
336  int64_t pts;
337 
338  for (int i = 0; i < ctx->nb_outputs; i++) {
339  FF_FILTER_FORWARD_STATUS_BACK_ALL(ctx->outputs[i], ctx);
340  }
341 
342  ret = ff_inlink_consume_frame(inlink, &in);
343  if (ret < 0)
344  return ret;
345  if (ret > 0) {
346  for (int i = 0; i < ctx->nb_outputs; i++) {
347  if (ff_outlink_get_status(ctx->outputs[i]))
348  continue;
349 
350  ret = extract_plane(ctx->outputs[i], in);
351  if (ret < 0)
352  break;
353  }
354 
355  av_frame_free(&in);
356  if (ret < 0)
357  return ret;
358  }
359 
360  if (ff_inlink_acknowledge_status(inlink, &status, &pts)) {
361  for (int i = 0; i < ctx->nb_outputs; i++) {
362  if (ff_outlink_get_status(ctx->outputs[i]))
363  continue;
364  ff_outlink_set_status(ctx->outputs[i], status, pts);
365  }
366  return 0;
367  }
368 
369  for (int i = 0; i < ctx->nb_outputs; i++) {
370  if (ff_outlink_get_status(ctx->outputs[i]))
371  continue;
372 
373  if (ff_outlink_frame_wanted(ctx->outputs[i])) {
374  ff_inlink_request_frame(inlink);
375  return 0;
376  }
377  }
378 
379  return FFERROR_NOT_READY;
380 }
381 
382 static av_cold int init(AVFilterContext *ctx)
383 {
384  ExtractPlanesContext *s = ctx->priv;
385  int planes = (s->requested_planes & 0xf) | (s->requested_planes >> 4);
386  int i, ret;
387 
388  for (i = 0; i < 4; i++) {
389  char *name;
390  AVFilterPad pad = { 0 };
391 
392  if (!(planes & (1 << i)))
393  continue;
394 
395  name = av_asprintf("out%d", ctx->nb_outputs);
396  if (!name)
397  return AVERROR(ENOMEM);
398  s->map[ctx->nb_outputs] = i;
399  pad.name = name;
400  pad.type = AVMEDIA_TYPE_VIDEO;
401  pad.config_props = config_output;
402 
403  if ((ret = ff_append_outpad_free_name(ctx, &pad)) < 0)
404  return ret;
405  }
406 
407  return 0;
408 }
409 
410 static const AVFilterPad extractplanes_inputs[] = {
411  {
412  .name = "default",
413  .type = AVMEDIA_TYPE_VIDEO,
414  .config_props = config_input,
415  },
416 };
417 
418 const AVFilter ff_vf_extractplanes = {
419  .name = "extractplanes",
420  .description = NULL_IF_CONFIG_SMALL("Extract planes as grayscale frames."),
421  .priv_size = sizeof(ExtractPlanesContext),
422  .priv_class = &extractplanes_class,
423  .init = init,
424  .activate = activate,
425  FILTER_INPUTS(extractplanes_inputs),
426  .outputs = NULL,
427  FILTER_QUERY_FUNC(query_formats),
428  .flags = AVFILTER_FLAG_DYNAMIC_OUTPUTS,
429 };
430 
431 #if CONFIG_ALPHAEXTRACT_FILTER
432 
433 static av_cold int init_alphaextract(AVFilterContext *ctx)
434 {
435  ExtractPlanesContext *s = ctx->priv;
436 
437  s->requested_planes = PLANE_A;
438  s->map[0] = 3;
439 
440  return 0;
441 }
442 
443 static const AVFilterPad alphaextract_outputs[] = {
444  {
445  .name = "default",
446  .type = AVMEDIA_TYPE_VIDEO,
447  .config_props = config_output,
448  },
449 };
450 
451 const AVFilter ff_vf_alphaextract = {
452  .name = "alphaextract",
453  .description = NULL_IF_CONFIG_SMALL("Extract an alpha channel as a "
454  "grayscale image component."),
455  .priv_size = sizeof(ExtractPlanesContext),
456  .init = init_alphaextract,
457  .activate = activate,
458  FILTER_INPUTS(extractplanes_inputs),
459  FILTER_OUTPUTS(alphaextract_outputs),
460  FILTER_QUERY_FUNC(query_formats),
461 };
462 #endif /* CONFIG_ALPHAEXTRACT_FILTER */
ff_vf_extractplanes
const AVFilter ff_vf_extractplanes
Definition: vf_extractplanes.c:418
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:108
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:317
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:55
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:401
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:80
ff_filter_frame
int ff_filter_frame(AVFilterLink *link, AVFrame *frame)
Send a frame of data to the next filter.
Definition: avfilter.c:978
av_pix_fmt_desc_get
const AVPixFmtDescriptor * av_pix_fmt_desc_get(enum AVPixelFormat pix_fmt)
Definition: pixdesc.c:2936
FFERROR_NOT_READY
return FFERROR_NOT_READY
Definition: filter_design.txt:204
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:115
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
AVFrame
This structure describes decoded (raw) audio or video data.
Definition: frame.h:340
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:45
ExtractPlanesContext::linesize
int linesize[4]
Definition: vf_extractplanes.c:47
FLAGS
#define FLAGS
Definition: vf_extractplanes.c:54
AVOption
AVOption.
Definition: opt.h:251
FILTER_QUERY_FUNC
#define FILTER_QUERY_FUNC(func)
Definition: internal.h:169
AVFilterFormats::formats
int * formats
list of media formats
Definition: formats.h:66
AVFilter::name
const char * name
Filter name.
Definition: avfilter.h:170
video.h
AV_PIX_FMT_GRAY10LE
@ AV_PIX_FMT_GRAY10LE
Y , 10bpp, little-endian.
Definition: pixfmt.h:318
AV_PIX_FMT_GRAYF32LE
@ AV_PIX_FMT_GRAYF32LE
IEEE-754 single precision Y, 32bpp, little-endian.
Definition: pixfmt.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
AVFilterFormats
A list of supported formats for one end of a filter link.
Definition: formats.h:64
formats.h
AV_PIX_FMT_GRAY16BE
@ AV_PIX_FMT_GRAY16BE
Y , 16bpp, big-endian.
Definition: pixfmt.h:97
ff_inlink_consume_frame
int ff_inlink_consume_frame(AVFilterLink *link, AVFrame **rframe)
Take a frame from the link's FIFO and update the link's stats.
Definition: avfilter.c:1383
FF_FILTER_FORWARD_STATUS_BACK_ALL
#define FF_FILTER_FORWARD_STATUS_BACK_ALL(outlink, filter)
Forward the status on an output link to all input links.
Definition: filters.h:212
PLANE_A
#define PLANE_A
Definition: vf_extractplanes.c:38
ExtractPlanesContext::map
int map[4]
Definition: vf_extractplanes.c:46
ff_vf_alphaextract
const AVFilter ff_vf_alphaextract
AV_PIX_FMT_GRAY9LE
@ AV_PIX_FMT_GRAY9LE
Y , 9bpp, little-endian.
Definition: pixfmt.h:336
PLANE_B
#define PLANE_B
Definition: vf_extractplanes.c:37
pts
static int64_t pts
Definition: transcode_aac.c:643
AVFilterPad
A filter pad used for either input or output.
Definition: internal.h:47
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:271
activate
static int activate(AVFilterContext *ctx)
Definition: vf_extractplanes.c:331
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
extract_plane
static int extract_plane(AVFilterLink *outlink, AVFrame *frame)
Definition: vf_extractplanes.c:304
PLANE_Y
#define PLANE_Y
Definition: vf_extractplanes.c:39
ff_outlink_set_status
static void ff_outlink_set_status(AVFilterLink *link, int status, int64_t pts)
Set the status field of a link from the source filter.
Definition: filters.h:189
ff_inlink_request_frame
void ff_inlink_request_frame(AVFilterLink *link)
Mark that a frame is wanted on the link.
Definition: avfilter.c:1506
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:198
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:617
FF_OUTLINK_IDX
#define FF_OUTLINK_IDX(link)
Definition: internal.h:328
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:43
init
static av_cold int init(AVFilterContext *ctx)
Definition: vf_extractplanes.c:382
FILTER_INPUTS
#define FILTER_INPUTS(array)
Definition: internal.h:192
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
AVFilterFormats::nb_formats
unsigned nb_formats
number of formats
Definition: formats.h:65
PLANE_G
#define PLANE_G
Definition: vf_extractplanes.c:36
AV_PIX_FMT_GRAY8
@ AV_PIX_FMT_GRAY8
Y , 8bpp.
Definition: pixfmt.h:74
ff_inlink_acknowledge_status
int ff_inlink_acknowledge_status(AVFilterLink *link, int *rstatus, int64_t *rpts)
Test and acknowledge the change of status on the link.
Definition: avfilter.c:1337
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:112
AVFilterPad::config_props
int(* config_props)(AVFilterLink *link)
Link configuration callback.
Definition: internal.h:127
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
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:2901
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:316
ExtractPlanesContext::is_packed
int is_packed
Definition: vf_extractplanes.c:48
planes
static const struct @362 planes[]
config_output
static int config_output(AVFilterLink *outlink)
Definition: vf_extractplanes.c:255
height
#define height
OFFSET
#define OFFSET(x)
Definition: vf_extractplanes.c:53
extractplanes_inputs
static const AVFilterPad extractplanes_inputs[]
Definition: vf_extractplanes.c:410
internal.h
i
#define i(width, name, range_min, range_max)
Definition: cbs_h2645.c:244
AV_PIX_FMT_GRAY9BE
@ AV_PIX_FMT_GRAY9BE
Y , 9bpp, big-endian.
Definition: pixfmt.h:335
FLOAT_FORMATS
#define FLOAT_FORMATS(suf)
Definition: vf_extractplanes.c:127
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:53
AVFilter
Filter definition.
Definition: avfilter.h:166
AV_PIX_FMT_GRAY12BE
@ AV_PIX_FMT_GRAY12BE
Y , 12bpp, big-endian.
Definition: pixfmt.h:315
ret
ret
Definition: filter_design.txt:187
AVFilterPad::type
enum AVMediaType type
AVFilterPad type.
Definition: internal.h:58
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:360
status
ov_status_e status
Definition: dnn_backend_openvino.c:119
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:1529
AVFilterContext
An instance of a filter.
Definition: avfilter.h:397
desc
const char * desc
Definition: libsvtav1.c:83
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
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:49
PLANE_U
#define PLANE_U
Definition: vf_extractplanes.c:40
AV_PIX_FMT_GRAY14LE
@ AV_PIX_FMT_GRAY14LE
Y , 14bpp, little-endian.
Definition: pixfmt.h:358
ExtractPlanesContext::step
int step
Definition: vf_extractplanes.c:50
FILTER_OUTPUTS
#define FILTER_OUTPUTS(array)
Definition: internal.h:193
ff_append_outpad_free_name
int ff_append_outpad_free_name(AVFilterContext *f, AVFilterPad *p)
Definition: avfilter.c:143
src
INIT_CLIP pixel * src
Definition: h264pred_template.c:418
AV_PIX_FMT_GRAY14BE
@ AV_PIX_FMT_GRAY14BE
Y , 14bpp, big-endian.
Definition: pixfmt.h:357
ff_fill_rgba_map
int ff_fill_rgba_map(uint8_t *rgba_map, enum AVPixelFormat pix_fmt)
Definition: drawutils.c:35
AV_OPT_TYPE_FLAGS
@ AV_OPT_TYPE_FLAGS
Definition: opt.h:224
imgutils.h
av_log
#define av_log(a,...)
Definition: tableprint_vlc.h:27
ff_outlink_frame_wanted
the definition of that something depends on the semantic of the filter The callback must examine the status of the filter s links and proceed accordingly The status of output links is stored in the status_in and status_out fields and tested by the ff_outlink_frame_wanted() function. If this function returns true
avstring.h
drawutils.h
HIGHDEPTH_FORMATS
#define HIGHDEPTH_FORMATS(suf)
Definition: vf_extractplanes.c:87
config_input
static int config_input(AVFilterLink *inlink)
Definition: vf_extractplanes.c:223
PLANE_V
#define PLANE_V
Definition: vf_extractplanes.c:41
PLANE_R
#define PLANE_R
Definition: vf_extractplanes.c:35
AVFILTER_DEFINE_CLASS
AVFILTER_DEFINE_CLASS(extractplanes)
EIGHTBIT_FORMATS
#define EIGHTBIT_FORMATS
Definition: vf_extractplanes.c:69
AV_OPT_TYPE_CONST
@ AV_OPT_TYPE_CONST
Definition: opt.h:234
query_formats
static int query_formats(AVFilterContext *ctx)
Definition: vf_extractplanes.c:132
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