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 "internal.h"
32 
33 #define PLANE_R 0x01
34 #define PLANE_G 0x02
35 #define PLANE_B 0x04
36 #define PLANE_A 0x08
37 #define PLANE_Y 0x10
38 #define PLANE_U 0x20
39 #define PLANE_V 0x40
40 
41 typedef struct ExtractPlanesContext {
42  const AVClass *class;
43  int requested_planes;
44  int map[4];
45  int linesize[4];
46  int is_packed;
47  int depth;
48  int step;
49 } ExtractPlanesContext;
50 
51 #define OFFSET(x) offsetof(ExtractPlanesContext, x)
52 #define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM
53 static const AVOption extractplanes_options[] = {
54  { "planes", "set planes", OFFSET(requested_planes), AV_OPT_TYPE_FLAGS, {.i64=1}, 1, 0xff, FLAGS, "flags"},
55  { "y", "set luma plane", 0, AV_OPT_TYPE_CONST, {.i64=PLANE_Y}, 0, 0, FLAGS, "flags"},
56  { "u", "set u plane", 0, AV_OPT_TYPE_CONST, {.i64=PLANE_U}, 0, 0, FLAGS, "flags"},
57  { "v", "set v plane", 0, AV_OPT_TYPE_CONST, {.i64=PLANE_V}, 0, 0, FLAGS, "flags"},
58  { "r", "set red plane", 0, AV_OPT_TYPE_CONST, {.i64=PLANE_R}, 0, 0, FLAGS, "flags"},
59  { "g", "set green plane", 0, AV_OPT_TYPE_CONST, {.i64=PLANE_G}, 0, 0, FLAGS, "flags"},
60  { "b", "set blue plane", 0, AV_OPT_TYPE_CONST, {.i64=PLANE_B}, 0, 0, FLAGS, "flags"},
61  { "a", "set alpha plane", 0, AV_OPT_TYPE_CONST, {.i64=PLANE_A}, 0, 0, FLAGS, "flags"},
62  { NULL }
63 };
64 
65 AVFILTER_DEFINE_CLASS(extractplanes);
66 
67 #define EIGHTBIT_FORMATS \
68  AV_PIX_FMT_YUV410P, \
69  AV_PIX_FMT_YUV411P, \
70  AV_PIX_FMT_YUV440P, \
71  AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUVA420P, \
72  AV_PIX_FMT_YUV422P, AV_PIX_FMT_YUVA422P, \
73  AV_PIX_FMT_YUVJ420P, AV_PIX_FMT_YUVJ422P, \
74  AV_PIX_FMT_YUVJ440P, AV_PIX_FMT_YUVJ444P, \
75  AV_PIX_FMT_YUVJ411P, \
76  AV_PIX_FMT_YUV444P, AV_PIX_FMT_YUVA444P, \
77  AV_PIX_FMT_GRAY8, AV_PIX_FMT_GRAY8A, \
78  AV_PIX_FMT_RGB24, AV_PIX_FMT_BGR24, \
79  AV_PIX_FMT_RGBA, AV_PIX_FMT_BGRA, \
80  AV_PIX_FMT_ARGB, AV_PIX_FMT_ABGR, \
81  AV_PIX_FMT_RGB0, AV_PIX_FMT_BGR0, \
82  AV_PIX_FMT_0RGB, AV_PIX_FMT_0BGR, \
83  AV_PIX_FMT_GBRP, AV_PIX_FMT_GBRAP
84 
85 #define HIGHDEPTH_FORMATS(suf) \
86  AV_PIX_FMT_YA16##suf, \
87  AV_PIX_FMT_GRAY9##suf, \
88  AV_PIX_FMT_GRAY10##suf, \
89  AV_PIX_FMT_GRAY12##suf, \
90  AV_PIX_FMT_GRAY14##suf, \
91  AV_PIX_FMT_GRAY16##suf, \
92  AV_PIX_FMT_YUV420P16##suf, AV_PIX_FMT_YUVA420P16##suf, \
93  AV_PIX_FMT_YUV422P16##suf, AV_PIX_FMT_YUVA422P16##suf, \
94  AV_PIX_FMT_YUV444P16##suf, AV_PIX_FMT_YUVA444P16##suf, \
95  AV_PIX_FMT_RGB48##suf, AV_PIX_FMT_BGR48##suf, \
96  AV_PIX_FMT_RGBA64##suf, AV_PIX_FMT_BGRA64##suf, \
97  AV_PIX_FMT_GBRP16##suf, AV_PIX_FMT_GBRAP16##suf, \
98  AV_PIX_FMT_YUV420P10##suf, \
99  AV_PIX_FMT_YUV422P10##suf, \
100  AV_PIX_FMT_YUV444P10##suf, \
101  AV_PIX_FMT_YUV440P10##suf, \
102  AV_PIX_FMT_YUVA420P10##suf, \
103  AV_PIX_FMT_YUVA422P10##suf, \
104  AV_PIX_FMT_YUVA444P10##suf, \
105  AV_PIX_FMT_YUV420P12##suf, \
106  AV_PIX_FMT_YUV422P12##suf, \
107  AV_PIX_FMT_YUV444P12##suf, \
108  AV_PIX_FMT_YUV440P12##suf, \
109  AV_PIX_FMT_YUVA422P12##suf, \
110  AV_PIX_FMT_YUVA444P12##suf, \
111  AV_PIX_FMT_GBRP10##suf, AV_PIX_FMT_GBRAP10##suf, \
112  AV_PIX_FMT_GBRP12##suf, AV_PIX_FMT_GBRAP12##suf, \
113  AV_PIX_FMT_YUV420P9##suf, \
114  AV_PIX_FMT_YUV422P9##suf, \
115  AV_PIX_FMT_YUV444P9##suf, \
116  AV_PIX_FMT_YUVA420P9##suf, \
117  AV_PIX_FMT_YUVA422P9##suf, \
118  AV_PIX_FMT_YUVA444P9##suf, \
119  AV_PIX_FMT_GBRP9##suf, \
120  AV_PIX_FMT_GBRP14##suf, \
121  AV_PIX_FMT_YUV420P14##suf, \
122  AV_PIX_FMT_YUV422P14##suf, \
123  AV_PIX_FMT_YUV444P14##suf
124 
125 #define FLOAT_FORMATS(suf) \
126  AV_PIX_FMT_GRAYF32##suf, \
127  AV_PIX_FMT_GBRPF32##suf, AV_PIX_FMT_GBRAPF32##suf \
128 
129 static int query_formats(AVFilterContext *ctx)
130 {
131  static const enum AVPixelFormat in_pixfmts_le[] = {
132  EIGHTBIT_FORMATS,
133  HIGHDEPTH_FORMATS(LE),
134  FLOAT_FORMATS(LE),
135  AV_PIX_FMT_NONE,
136  };
137  static const enum AVPixelFormat in_pixfmts_be[] = {
138  EIGHTBIT_FORMATS,
139  HIGHDEPTH_FORMATS(BE),
140  FLOAT_FORMATS(BE),
141  AV_PIX_FMT_NONE,
142  };
143  static const enum AVPixelFormat out8_pixfmts[] = { AV_PIX_FMT_GRAY8, AV_PIX_FMT_NONE };
144  static const enum AVPixelFormat out9le_pixfmts[] = { AV_PIX_FMT_GRAY9LE, AV_PIX_FMT_NONE };
145  static const enum AVPixelFormat out9be_pixfmts[] = { AV_PIX_FMT_GRAY9BE, AV_PIX_FMT_NONE };
146  static const enum AVPixelFormat out10le_pixfmts[] = { AV_PIX_FMT_GRAY10LE, AV_PIX_FMT_NONE };
147  static const enum AVPixelFormat out10be_pixfmts[] = { AV_PIX_FMT_GRAY10BE, AV_PIX_FMT_NONE };
148  static const enum AVPixelFormat out12le_pixfmts[] = { AV_PIX_FMT_GRAY12LE, AV_PIX_FMT_NONE };
149  static const enum AVPixelFormat out12be_pixfmts[] = { AV_PIX_FMT_GRAY12BE, AV_PIX_FMT_NONE };
150  static const enum AVPixelFormat out14le_pixfmts[] = { AV_PIX_FMT_GRAY14LE, AV_PIX_FMT_NONE };
151  static const enum AVPixelFormat out14be_pixfmts[] = { AV_PIX_FMT_GRAY14BE, AV_PIX_FMT_NONE };
152  static const enum AVPixelFormat out16le_pixfmts[] = { AV_PIX_FMT_GRAY16LE, AV_PIX_FMT_NONE };
153  static const enum AVPixelFormat out16be_pixfmts[] = { AV_PIX_FMT_GRAY16BE, AV_PIX_FMT_NONE };
154  static const enum AVPixelFormat out32le_pixfmts[] = { AV_PIX_FMT_GRAYF32LE, AV_PIX_FMT_NONE };
155  static const enum AVPixelFormat out32be_pixfmts[] = { AV_PIX_FMT_GRAYF32BE, AV_PIX_FMT_NONE };
156  const enum AVPixelFormat *out_pixfmts, *in_pixfmts;
157  const AVPixFmtDescriptor *desc;
158  AVFilterFormats *avff;
159  int i, ret, depth = 0, be = 0;
160 
161  if (!ctx->inputs[0]->incfg.formats ||
162  !ctx->inputs[0]->incfg.formats->nb_formats) {
163  return AVERROR(EAGAIN);
164  }
165 
166  avff = ctx->inputs[0]->incfg.formats;
167  desc = av_pix_fmt_desc_get(avff->formats[0]);
168  depth = desc->comp[0].depth;
169  be = desc->flags & AV_PIX_FMT_FLAG_BE;
170  if (be) {
171  in_pixfmts = in_pixfmts_be;
172  } else {
173  in_pixfmts = in_pixfmts_le;
174  }
175  if (!ctx->inputs[0]->outcfg.formats)
176  if ((ret = ff_formats_ref(ff_make_format_list(in_pixfmts), &ctx->inputs[0]->outcfg.formats)) < 0)
177  return ret;
178 
179  for (i = 1; i < avff->nb_formats; i++) {
180  desc = av_pix_fmt_desc_get(avff->formats[i]);
181  if (depth != desc->comp[0].depth ||
182  be != (desc->flags & AV_PIX_FMT_FLAG_BE)) {
183  return AVERROR(EAGAIN);
184  }
185  }
186 
187  if (depth == 8)
188  out_pixfmts = out8_pixfmts;
189  else if (!be && depth == 9)
190  out_pixfmts = out9le_pixfmts;
191  else if (be && depth == 9)
192  out_pixfmts = out9be_pixfmts;
193  else if (!be && depth == 10)
194  out_pixfmts = out10le_pixfmts;
195  else if (be && depth == 10)
196  out_pixfmts = out10be_pixfmts;
197  else if (!be && depth == 12)
198  out_pixfmts = out12le_pixfmts;
199  else if (be && depth == 12)
200  out_pixfmts = out12be_pixfmts;
201  else if (!be && depth == 14)
202  out_pixfmts = out14le_pixfmts;
203  else if (be && depth == 14)
204  out_pixfmts = out14be_pixfmts;
205  else if (be && depth == 16)
206  out_pixfmts = out16be_pixfmts;
207  else if (!be && depth == 16)
208  out_pixfmts = out16le_pixfmts;
209  else if (be && depth == 32)
210  out_pixfmts = out32be_pixfmts;
211  else
212  out_pixfmts = out32le_pixfmts;
213 
214  for (i = 0; i < ctx->nb_outputs; i++)
215  if ((ret = ff_formats_ref(ff_make_format_list(out_pixfmts), &ctx->outputs[i]->incfg.formats)) < 0)
216  return ret;
217  return 0;
218 }
219 
220 static int config_input(AVFilterLink *inlink)
221 {
222  AVFilterContext *ctx = inlink->dst;
223  ExtractPlanesContext *s = ctx->priv;
224  const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format);
225  int plane_avail, ret, i;
226  uint8_t rgba_map[4];
227 
228  plane_avail = ((desc->flags & AV_PIX_FMT_FLAG_RGB) ? PLANE_R|PLANE_G|PLANE_B :
229  PLANE_Y |
230  ((desc->nb_components > 2) ? PLANE_U|PLANE_V : 0)) |
231  ((desc->flags & AV_PIX_FMT_FLAG_ALPHA) ? PLANE_A : 0);
232  if (s->requested_planes & ~plane_avail) {
233  av_log(ctx, AV_LOG_ERROR, "Requested planes not available.\n");
234  return AVERROR(EINVAL);
235  }
236  if ((ret = av_image_fill_linesizes(s->linesize, inlink->format, inlink->w)) < 0)
237  return ret;
238 
239  s->depth = desc->comp[0].depth >> 3;
240  s->step = av_get_padded_bits_per_pixel(desc) >> 3;
241  s->is_packed = !(desc->flags & AV_PIX_FMT_FLAG_PLANAR) &&
242  (desc->nb_components > 1);
243  if (desc->flags & AV_PIX_FMT_FLAG_RGB) {
244  ff_fill_rgba_map(rgba_map, inlink->format);
245  for (i = 0; i < 4; i++)
246  s->map[i] = rgba_map[s->map[i]];
247  }
248 
249  return 0;
250 }
251 
252 static int config_output(AVFilterLink *outlink)
253 {
254  AVFilterContext *ctx = outlink->src;
255  AVFilterLink *inlink = ctx->inputs[0];
256  ExtractPlanesContext *s = ctx->priv;
257  const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format);
258  const int output = outlink->srcpad - ctx->output_pads;
259 
260  if (s->map[output] == 1 || s->map[output] == 2) {
261  outlink->h = AV_CEIL_RSHIFT(inlink->h, desc->log2_chroma_h);
262  outlink->w = AV_CEIL_RSHIFT(inlink->w, desc->log2_chroma_w);
263  }
264 
265  return 0;
266 }
267 
268 static void extract_from_packed(uint8_t *dst, int dst_linesize,
269  const uint8_t *src, int src_linesize,
270  int width, int height,
271  int depth, int step, int comp)
272 {
273  int x, y;
274 
275  for (y = 0; y < height; y++) {
276  switch (depth) {
277  case 1:
278  for (x = 0; x < width; x++)
279  dst[x] = src[x * step + comp];
280  break;
281  case 2:
282  for (x = 0; x < width; x++) {
283  dst[x * 2 ] = src[x * step + comp * 2 ];
284  dst[x * 2 + 1] = src[x * step + comp * 2 + 1];
285  }
286  break;
287  }
288  dst += dst_linesize;
289  src += src_linesize;
290  }
291 }
292 
293 static int extract_plane(AVFilterLink *outlink, AVFrame *frame)
294 {
295  AVFilterContext *ctx = outlink->src;
296  ExtractPlanesContext *s = ctx->priv;
297  const int idx = s->map[FF_OUTLINK_IDX(outlink)];
298  AVFrame *out;
299 
300  out = ff_get_video_buffer(outlink, outlink->w, outlink->h);
301  if (!out)
302  return AVERROR(ENOMEM);
303  av_frame_copy_props(out, frame);
304 
305  if (s->is_packed) {
306  extract_from_packed(out->data[0], out->linesize[0],
307  frame->data[0], frame->linesize[0],
308  outlink->w, outlink->h,
309  s->depth,
310  s->step, idx);
311  } else {
312  av_image_copy_plane(out->data[0], out->linesize[0],
313  frame->data[idx], frame->linesize[idx],
314  s->linesize[idx], outlink->h);
315  }
316 
317  return ff_filter_frame(outlink, out);
318 }
319 
320 static int activate(AVFilterContext *ctx)
321 {
322  AVFilterLink *inlink = ctx->inputs[0];
323  int status, ret;
324  AVFrame *in;
325  int64_t pts;
326 
327  for (int i = 0; i < ctx->nb_outputs; i++) {
328  FF_FILTER_FORWARD_STATUS_BACK_ALL(ctx->outputs[i], ctx);
329  }
330 
331  ret = ff_inlink_consume_frame(inlink, &in);
332  if (ret < 0)
333  return ret;
334  if (ret > 0) {
335  for (int i = 0; i < ctx->nb_outputs; i++) {
336  if (ff_outlink_get_status(ctx->outputs[i]))
337  continue;
338 
339  ret = extract_plane(ctx->outputs[i], in);
340  if (ret < 0)
341  break;
342  }
343 
344  av_frame_free(&in);
345  if (ret < 0)
346  return ret;
347  }
348 
349  if (ff_inlink_acknowledge_status(inlink, &status, &pts)) {
350  for (int i = 0; i < ctx->nb_outputs; i++) {
351  if (ff_outlink_get_status(ctx->outputs[i]))
352  continue;
353  ff_outlink_set_status(ctx->outputs[i], status, pts);
354  }
355  return 0;
356  }
357 
358  for (int i = 0; i < ctx->nb_outputs; i++) {
359  if (ff_outlink_get_status(ctx->outputs[i]))
360  continue;
361 
362  if (ff_outlink_frame_wanted(ctx->outputs[i])) {
363  ff_inlink_request_frame(inlink);
364  return 0;
365  }
366  }
367 
368  return FFERROR_NOT_READY;
369 }
370 
371 static av_cold int init(AVFilterContext *ctx)
372 {
373  ExtractPlanesContext *s = ctx->priv;
374  int planes = (s->requested_planes & 0xf) | (s->requested_planes >> 4);
375  int i, ret;
376 
377  for (i = 0; i < 4; i++) {
378  char *name;
379  AVFilterPad pad = { 0 };
380 
381  if (!(planes & (1 << i)))
382  continue;
383 
384  name = av_asprintf("out%d", ctx->nb_outputs);
385  if (!name)
386  return AVERROR(ENOMEM);
387  s->map[ctx->nb_outputs] = i;
388  pad.name = name;
389  pad.type = AVMEDIA_TYPE_VIDEO;
390  pad.config_props = config_output;
391 
392  if ((ret = ff_append_outpad_free_name(ctx, &pad)) < 0)
393  return ret;
394  }
395 
396  return 0;
397 }
398 
399 static const AVFilterPad extractplanes_inputs[] = {
400  {
401  .name = "default",
402  .type = AVMEDIA_TYPE_VIDEO,
403  .config_props = config_input,
404  },
405 };
406 
407 const AVFilter ff_vf_extractplanes = {
408  .name = "extractplanes",
409  .description = NULL_IF_CONFIG_SMALL("Extract planes as grayscale frames."),
410  .priv_size = sizeof(ExtractPlanesContext),
411  .priv_class = &extractplanes_class,
412  .init = init,
413  .activate = activate,
414  FILTER_INPUTS(extractplanes_inputs),
415  .outputs = NULL,
416  FILTER_QUERY_FUNC(query_formats),
417  .flags = AVFILTER_FLAG_DYNAMIC_OUTPUTS,
418 };
419 
420 #if CONFIG_ALPHAEXTRACT_FILTER
421 
422 static av_cold int init_alphaextract(AVFilterContext *ctx)
423 {
424  ExtractPlanesContext *s = ctx->priv;
425 
426  s->requested_planes = PLANE_A;
427  s->map[0] = 3;
428 
429  return 0;
430 }
431 
432 static const AVFilterPad alphaextract_outputs[] = {
433  {
434  .name = "default",
435  .type = AVMEDIA_TYPE_VIDEO,
436  .config_props = config_output,
437  },
438 };
439 
440 const AVFilter ff_vf_alphaextract = {
441  .name = "alphaextract",
442  .description = NULL_IF_CONFIG_SMALL("Extract an alpha channel as a "
443  "grayscale image component."),
444  .priv_size = sizeof(ExtractPlanesContext),
445  .init = init_alphaextract,
446  .activate = activate,
447  FILTER_INPUTS(extractplanes_inputs),
448  FILTER_OUTPUTS(alphaextract_outputs),
449  FILTER_QUERY_FUNC(query_formats),
450 };
451 #endif /* CONFIG_ALPHAEXTRACT_FILTER */
ff_vf_extractplanes
const AVFilter ff_vf_extractplanes
Definition: vf_extractplanes.c:407
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:101
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:289
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
status
they must not be accessed directly The fifo field contains the frames that are queued in the input for processing by the filter The status_in and status_out fields contains the queued status(EOF or error) of the link
extractplanes_options
static const AVOption extractplanes_options[]
Definition: vf_extractplanes.c:53
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:380
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:86
ff_filter_frame
int ff_filter_frame(AVFilterLink *link, AVFrame *frame)
Send a frame of data to the next filter.
Definition: avfilter.c:999
av_pix_fmt_desc_get
const AVPixFmtDescriptor * av_pix_fmt_desc_get(enum AVPixelFormat pix_fmt)
Definition: pixdesc.c:2662
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:116
av_frame_free
void av_frame_free(AVFrame **frame)
Free the frame and any dynamically allocated objects in it, e.g.
Definition: frame.c:111
AVFrame
This structure describes decoded (raw) audio or video data.
Definition: frame.h:325
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:43
ExtractPlanesContext::linesize
int linesize[4]
Definition: vf_extractplanes.c:45
FLAGS
#define FLAGS
Definition: vf_extractplanes.c:52
AVOption
AVOption.
Definition: opt.h:251
FILTER_QUERY_FUNC
#define FILTER_QUERY_FUNC(func)
Definition: internal.h:167
AVFilterFormats::formats
int * formats
list of media formats
Definition: formats.h:66
AVFilter::name
const char * name
Filter name.
Definition: avfilter.h:175
AV_PIX_FMT_GRAY10LE
@ AV_PIX_FMT_GRAY10LE
Y , 10bpp, little-endian.
Definition: pixfmt.h:290
AV_PIX_FMT_GRAYF32LE
@ AV_PIX_FMT_GRAYF32LE
IEEE-754 single precision Y, 32bpp, little-endian.
Definition: pixfmt.h:333
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
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:1394
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:36
ExtractPlanesContext::map
int map[4]
Definition: vf_extractplanes.c:44
ff_vf_alphaextract
const AVFilter ff_vf_alphaextract
AV_PIX_FMT_GRAY9LE
@ AV_PIX_FMT_GRAY9LE
Y , 9bpp, little-endian.
Definition: pixfmt.h:308
PLANE_B
#define PLANE_B
Definition: vf_extractplanes.c:35
pts
static int64_t pts
Definition: transcode_aac.c:654
AVFilterPad
A filter pad used for either input or output.
Definition: internal.h:49
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:268
activate
static int activate(AVFilterContext *ctx)
Definition: vf_extractplanes.c:320
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:293
PLANE_Y
#define PLANE_Y
Definition: vf_extractplanes.c:37
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:1511
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:256
AV_CEIL_RSHIFT
#define AV_CEIL_RSHIFT(a, b)
Definition: common.h:50
ff_formats_ref
int ff_formats_ref(AVFilterFormats *f, AVFilterFormats **ref)
Add *ref as a new reference to formats.
Definition: formats.c:596
FF_OUTLINK_IDX
#define FF_OUTLINK_IDX(link)
Definition: internal.h:334
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:41
init
static av_cold int init(AVFilterContext *ctx)
Definition: vf_extractplanes.c:371
FILTER_INPUTS
#define FILTER_INPUTS(array)
Definition: internal.h:190
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:596
AVFilterFormats::nb_formats
unsigned nb_formats
number of formats
Definition: formats.h:65
PLANE_G
#define PLANE_G
Definition: vf_extractplanes.c:34
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:1348
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:122
planes
static const struct @328 planes[]
AVFilterPad::config_props
int(* config_props)(AVFilterLink *link)
Link configuration callback.
Definition: internal.h:129
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:2627
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:288
ExtractPlanesContext::is_packed
int is_packed
Definition: vf_extractplanes.c:46
config_output
static int config_output(AVFilterLink *outlink)
Definition: vf_extractplanes.c:252
height
#define height
OFFSET
#define OFFSET(x)
Definition: vf_extractplanes.c:51
extractplanes_inputs
static const AVFilterPad extractplanes_inputs[]
Definition: vf_extractplanes.c:399
internal.h
i
#define i(width, name, range_min, range_max)
Definition: cbs_h2645.c:269
AV_PIX_FMT_GRAY9BE
@ AV_PIX_FMT_GRAY9BE
Y , 9bpp, big-endian.
Definition: pixfmt.h:307
FLOAT_FORMATS
#define FLOAT_FORMATS(suf)
Definition: vf_extractplanes.c:125
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:55
AVFilter
Filter definition.
Definition: avfilter.h:171
AV_PIX_FMT_GRAY12BE
@ AV_PIX_FMT_GRAY12BE
Y , 12bpp, big-endian.
Definition: pixfmt.h:287
ret
ret
Definition: filter_design.txt:187
AVFilterPad::type
enum AVMediaType type
AVFilterPad type.
Definition: internal.h:60
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:332
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:1534
AVFilterContext
An instance of a filter.
Definition: avfilter.h:408
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:47
PLANE_U
#define PLANE_U
Definition: vf_extractplanes.c:38
AV_PIX_FMT_GRAY14LE
@ AV_PIX_FMT_GRAY14LE
Y , 14bpp, little-endian.
Definition: pixfmt.h:330
ExtractPlanesContext::step
int step
Definition: vf_extractplanes.c:48
FILTER_OUTPUTS
#define FILTER_OUTPUTS(array)
Definition: internal.h:191
ff_append_outpad_free_name
int ff_append_outpad_free_name(AVFilterContext *f, AVFilterPad *p)
Definition: avfilter.c:134
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:329
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:85
config_input
static int config_input(AVFilterLink *inlink)
Definition: vf_extractplanes.c:220
PLANE_V
#define PLANE_V
Definition: vf_extractplanes.c:39
PLANE_R
#define PLANE_R
Definition: vf_extractplanes.c:33
AVFILTER_DEFINE_CLASS
AVFILTER_DEFINE_CLASS(extractplanes)
EIGHTBIT_FORMATS
#define EIGHTBIT_FORMATS
Definition: vf_extractplanes.c:67
AV_OPT_TYPE_CONST
@ AV_OPT_TYPE_CONST
Definition: opt.h:234
query_formats
static int query_formats(AVFilterContext *ctx)
Definition: vf_extractplanes.c:129
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