FFmpeg
vf_zscale.c
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1 /*
2  * Copyright (c) 2015 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 /**
22  * @file
23  * zscale video filter using z.lib library
24  */
25 
26 #include <float.h>
27 #include <stdio.h>
28 #include <string.h>
29 
30 #include <zimg.h>
31 
32 #include "avfilter.h"
33 #include "formats.h"
34 #include "internal.h"
35 #include "video.h"
36 #include "libavutil/avstring.h"
37 #include "libavutil/eval.h"
38 #include "libavutil/internal.h"
39 #include "libavutil/intreadwrite.h"
40 #include "libavutil/mathematics.h"
41 #include "libavutil/opt.h"
42 #include "libavutil/parseutils.h"
43 #include "libavutil/pixdesc.h"
44 #include "libavutil/imgutils.h"
45 #include "libavutil/avassert.h"
46 
47 #define ZIMG_ALIGNMENT 32
48 
49 static const char *const var_names[] = {
50  "in_w", "iw",
51  "in_h", "ih",
52  "out_w", "ow",
53  "out_h", "oh",
54  "a",
55  "sar",
56  "dar",
57  "hsub",
58  "vsub",
59  "ohsub",
60  "ovsub",
61  NULL
62 };
63 
64 enum var_name {
77 };
78 
79 typedef struct ZScaleContext {
80  const AVClass *class;
81 
82  /**
83  * New dimensions. Special values are:
84  * 0 = original width/height
85  * -1 = keep original aspect
86  * -N = try to keep aspect but make sure it is divisible by N
87  */
88  int w, h;
89  int dither;
90  int filter;
92  int trc;
93  int primaries;
94  int range;
95  int chromal;
97  int trc_in;
99  int range_in;
101  char *size_str;
104 
105  char *w_expr; ///< width expression string
106  char *h_expr; ///< height expression string
107 
112 
114 
115  void *tmp;
116  size_t tmp_size;
117 
118  zimg_image_format src_format, dst_format;
119  zimg_image_format alpha_src_format, alpha_dst_format;
120  zimg_graph_builder_params alpha_params, params;
121  zimg_filter_graph *alpha_graph, *graph;
122 
123  enum AVColorSpace in_colorspace, out_colorspace;
125  enum AVColorPrimaries in_primaries, out_primaries;
126  enum AVColorRange in_range, out_range;
127  enum AVChromaLocation in_chromal, out_chromal;
128 } ZScaleContext;
129 
131 {
132  ZScaleContext *s = ctx->priv;
133  int ret;
134 
135  if (s->size_str && (s->w_expr || s->h_expr)) {
136  av_log(ctx, AV_LOG_ERROR,
137  "Size and width/height expressions cannot be set at the same time.\n");
138  return AVERROR(EINVAL);
139  }
140 
141  if (s->w_expr && !s->h_expr)
142  FFSWAP(char *, s->w_expr, s->size_str);
143 
144  if (s->size_str) {
145  char buf[32];
146  if ((ret = av_parse_video_size(&s->w, &s->h, s->size_str)) < 0) {
147  av_log(ctx, AV_LOG_ERROR,
148  "Invalid size '%s'\n", s->size_str);
149  return ret;
150  }
151  snprintf(buf, sizeof(buf)-1, "%d", s->w);
152  av_opt_set(s, "w", buf, 0);
153  snprintf(buf, sizeof(buf)-1, "%d", s->h);
154  av_opt_set(s, "h", buf, 0);
155  }
156  if (!s->w_expr)
157  av_opt_set(s, "w", "iw", 0);
158  if (!s->h_expr)
159  av_opt_set(s, "h", "ih", 0);
160 
161  return 0;
162 }
163 
165 {
166  static const enum AVPixelFormat pixel_fmts[] = {
187  };
188  int ret;
189 
190  ret = ff_formats_ref(ff_make_format_list(pixel_fmts), &ctx->inputs[0]->outcfg.formats);
191  if (ret < 0)
192  return ret;
193  return ff_formats_ref(ff_make_format_list(pixel_fmts), &ctx->outputs[0]->incfg.formats);
194 }
195 
196 static int config_props(AVFilterLink *outlink)
197 {
198  AVFilterContext *ctx = outlink->src;
199  AVFilterLink *inlink = outlink->src->inputs[0];
200  ZScaleContext *s = ctx->priv;
202  const AVPixFmtDescriptor *out_desc = av_pix_fmt_desc_get(outlink->format);
203  int64_t w, h;
204  double var_values[VARS_NB], res;
205  char *expr;
206  int ret;
207  int factor_w, factor_h;
208 
209  var_values[VAR_IN_W] = var_values[VAR_IW] = inlink->w;
210  var_values[VAR_IN_H] = var_values[VAR_IH] = inlink->h;
211  var_values[VAR_OUT_W] = var_values[VAR_OW] = NAN;
212  var_values[VAR_OUT_H] = var_values[VAR_OH] = NAN;
213  var_values[VAR_A] = (double) inlink->w / inlink->h;
214  var_values[VAR_SAR] = inlink->sample_aspect_ratio.num ?
215  (double) inlink->sample_aspect_ratio.num / inlink->sample_aspect_ratio.den : 1;
216  var_values[VAR_DAR] = var_values[VAR_A] * var_values[VAR_SAR];
217  var_values[VAR_HSUB] = 1 << desc->log2_chroma_w;
218  var_values[VAR_VSUB] = 1 << desc->log2_chroma_h;
219  var_values[VAR_OHSUB] = 1 << out_desc->log2_chroma_w;
220  var_values[VAR_OVSUB] = 1 << out_desc->log2_chroma_h;
221 
222  /* evaluate width and height */
223  av_expr_parse_and_eval(&res, (expr = s->w_expr),
224  var_names, var_values,
225  NULL, NULL, NULL, NULL, NULL, 0, ctx);
226  s->w = var_values[VAR_OUT_W] = var_values[VAR_OW] = res;
227  if ((ret = av_expr_parse_and_eval(&res, (expr = s->h_expr),
228  var_names, var_values,
229  NULL, NULL, NULL, NULL, NULL, 0, ctx)) < 0)
230  goto fail;
231  s->h = var_values[VAR_OUT_H] = var_values[VAR_OH] = res;
232  /* evaluate again the width, as it may depend on the output height */
233  if ((ret = av_expr_parse_and_eval(&res, (expr = s->w_expr),
234  var_names, var_values,
235  NULL, NULL, NULL, NULL, NULL, 0, ctx)) < 0)
236  goto fail;
237  s->w = res;
238 
239  w = s->w;
240  h = s->h;
241 
242  /* Check if it is requested that the result has to be divisible by a some
243  * factor (w or h = -n with n being the factor). */
244  factor_w = 1;
245  factor_h = 1;
246  if (w < -1) {
247  factor_w = -w;
248  }
249  if (h < -1) {
250  factor_h = -h;
251  }
252 
253  if (w < 0 && h < 0)
254  s->w = s->h = 0;
255 
256  if (!(w = s->w))
257  w = inlink->w;
258  if (!(h = s->h))
259  h = inlink->h;
260 
261  /* Make sure that the result is divisible by the factor we determined
262  * earlier. If no factor was set, it is nothing will happen as the default
263  * factor is 1 */
264  if (w < 0)
265  w = av_rescale(h, inlink->w, inlink->h * factor_w) * factor_w;
266  if (h < 0)
267  h = av_rescale(w, inlink->h, inlink->w * factor_h) * factor_h;
268 
269  /* Note that force_original_aspect_ratio may overwrite the previous set
270  * dimensions so that it is not divisible by the set factors anymore. */
272  int tmp_w = av_rescale(h, inlink->w, inlink->h);
273  int tmp_h = av_rescale(w, inlink->h, inlink->w);
274 
275  if (s->force_original_aspect_ratio == 1) {
276  w = FFMIN(tmp_w, w);
277  h = FFMIN(tmp_h, h);
278  } else {
279  w = FFMAX(tmp_w, w);
280  h = FFMAX(tmp_h, h);
281  }
282  }
283 
284  if (w > INT_MAX || h > INT_MAX ||
285  (h * inlink->w) > INT_MAX ||
286  (w * inlink->h) > INT_MAX)
287  av_log(ctx, AV_LOG_ERROR, "Rescaled value for width or height is too big.\n");
288 
289  outlink->w = w;
290  outlink->h = h;
291 
292  if (inlink->w == outlink->w &&
293  inlink->h == outlink->h &&
294  inlink->format == outlink->format)
295  ;
296  else {
297  }
298 
299  if (inlink->sample_aspect_ratio.num){
300  outlink->sample_aspect_ratio = av_mul_q((AVRational){outlink->h * inlink->w, outlink->w * inlink->h}, inlink->sample_aspect_ratio);
301  } else
302  outlink->sample_aspect_ratio = inlink->sample_aspect_ratio;
303 
304  av_log(ctx, AV_LOG_VERBOSE, "w:%d h:%d fmt:%s sar:%d/%d -> w:%d h:%d fmt:%s sar:%d/%d\n",
305  inlink ->w, inlink ->h, av_get_pix_fmt_name( inlink->format),
307  outlink->w, outlink->h, av_get_pix_fmt_name(outlink->format),
308  outlink->sample_aspect_ratio.num, outlink->sample_aspect_ratio.den);
309  return 0;
310 
311 fail:
312  av_log(ctx, AV_LOG_ERROR,
313  "Error when evaluating the expression '%s'.\n"
314  "Maybe the expression for out_w:'%s' or for out_h:'%s' is self-referencing.\n",
315  expr, s->w_expr, s->h_expr);
316  return ret;
317 }
318 
320 {
321  char err_msg[1024];
322  int err_code = zimg_get_last_error(err_msg, sizeof(err_msg));
323 
324  av_log(ctx, AV_LOG_ERROR, "code %d: %s\n", err_code, err_msg);
325 
326  return AVERROR_EXTERNAL;
327 }
328 
329 static int convert_chroma_location(enum AVChromaLocation chroma_location)
330 {
331  switch (chroma_location) {
333  case AVCHROMA_LOC_LEFT:
334  return ZIMG_CHROMA_LEFT;
335  case AVCHROMA_LOC_CENTER:
336  return ZIMG_CHROMA_CENTER;
338  return ZIMG_CHROMA_TOP_LEFT;
339  case AVCHROMA_LOC_TOP:
340  return ZIMG_CHROMA_TOP;
342  return ZIMG_CHROMA_BOTTOM_LEFT;
343  case AVCHROMA_LOC_BOTTOM:
344  return ZIMG_CHROMA_BOTTOM;
345  }
346  return ZIMG_CHROMA_LEFT;
347 }
348 
350 {
351  switch (colorspace) {
352  case AVCOL_SPC_RGB:
353  return ZIMG_MATRIX_RGB;
354  case AVCOL_SPC_BT709:
355  return ZIMG_MATRIX_709;
357  return ZIMG_MATRIX_UNSPECIFIED;
358  case AVCOL_SPC_FCC:
359  return ZIMG_MATRIX_FCC;
360  case AVCOL_SPC_BT470BG:
361  return ZIMG_MATRIX_470BG;
362  case AVCOL_SPC_SMPTE170M:
363  return ZIMG_MATRIX_170M;
364  case AVCOL_SPC_SMPTE240M:
365  return ZIMG_MATRIX_240M;
366  case AVCOL_SPC_YCGCO:
367  return ZIMG_MATRIX_YCGCO;
369  return ZIMG_MATRIX_2020_NCL;
370  case AVCOL_SPC_BT2020_CL:
371  return ZIMG_MATRIX_2020_CL;
373  return ZIMG_MATRIX_CHROMATICITY_DERIVED_NCL;
375  return ZIMG_MATRIX_CHROMATICITY_DERIVED_CL;
376  case AVCOL_SPC_ICTCP:
377  return ZIMG_MATRIX_ICTCP;
378  }
379  return ZIMG_MATRIX_UNSPECIFIED;
380 }
381 
382 static int convert_trc(enum AVColorTransferCharacteristic color_trc)
383 {
384  switch (color_trc) {
386  return ZIMG_TRANSFER_UNSPECIFIED;
387  case AVCOL_TRC_BT709:
388  return ZIMG_TRANSFER_709;
389  case AVCOL_TRC_GAMMA22:
390  return ZIMG_TRANSFER_470_M;
391  case AVCOL_TRC_GAMMA28:
392  return ZIMG_TRANSFER_470_BG;
393  case AVCOL_TRC_SMPTE170M:
394  return ZIMG_TRANSFER_601;
395  case AVCOL_TRC_SMPTE240M:
396  return ZIMG_TRANSFER_240M;
397  case AVCOL_TRC_LINEAR:
398  return ZIMG_TRANSFER_LINEAR;
399  case AVCOL_TRC_LOG:
400  return ZIMG_TRANSFER_LOG_100;
401  case AVCOL_TRC_LOG_SQRT:
402  return ZIMG_TRANSFER_LOG_316;
404  return ZIMG_TRANSFER_IEC_61966_2_4;
405  case AVCOL_TRC_BT2020_10:
406  return ZIMG_TRANSFER_2020_10;
407  case AVCOL_TRC_BT2020_12:
408  return ZIMG_TRANSFER_2020_12;
409  case AVCOL_TRC_SMPTE2084:
410  return ZIMG_TRANSFER_ST2084;
412  return ZIMG_TRANSFER_ARIB_B67;
414  return ZIMG_TRANSFER_IEC_61966_2_1;
415  }
416  return ZIMG_TRANSFER_UNSPECIFIED;
417 }
418 
420 {
421  switch (color_primaries) {
423  return ZIMG_PRIMARIES_UNSPECIFIED;
424  case AVCOL_PRI_BT709:
425  return ZIMG_PRIMARIES_709;
426  case AVCOL_PRI_BT470M:
427  return ZIMG_PRIMARIES_470_M;
428  case AVCOL_PRI_BT470BG:
429  return ZIMG_PRIMARIES_470_BG;
430  case AVCOL_PRI_SMPTE170M:
431  return ZIMG_PRIMARIES_170M;
432  case AVCOL_PRI_SMPTE240M:
433  return ZIMG_PRIMARIES_240M;
434  case AVCOL_PRI_FILM:
435  return ZIMG_PRIMARIES_FILM;
436  case AVCOL_PRI_BT2020:
437  return ZIMG_PRIMARIES_2020;
438  case AVCOL_PRI_SMPTE428:
439  return ZIMG_PRIMARIES_ST428;
440  case AVCOL_PRI_SMPTE431:
441  return ZIMG_PRIMARIES_ST431_2;
442  case AVCOL_PRI_SMPTE432:
443  return ZIMG_PRIMARIES_ST432_1;
444  case AVCOL_PRI_JEDEC_P22:
445  return ZIMG_PRIMARIES_EBU3213_E;
446  }
447  return ZIMG_PRIMARIES_UNSPECIFIED;
448 }
449 
451 {
452  switch (color_range) {
454  case AVCOL_RANGE_MPEG:
455  return ZIMG_RANGE_LIMITED;
456  case AVCOL_RANGE_JPEG:
457  return ZIMG_RANGE_FULL;
458  }
459  return ZIMG_RANGE_LIMITED;
460 }
461 
462 static void format_init(zimg_image_format *format, AVFrame *frame, const AVPixFmtDescriptor *desc,
463  int colorspace, int primaries, int transfer, int range, int location)
464 {
465  format->width = frame->width;
466  format->height = frame->height;
467  format->subsample_w = desc->log2_chroma_w;
468  format->subsample_h = desc->log2_chroma_h;
469  format->depth = desc->comp[0].depth;
470  format->pixel_type = (desc->flags & AV_PIX_FMT_FLAG_FLOAT) ? ZIMG_PIXEL_FLOAT : desc->comp[0].depth > 8 ? ZIMG_PIXEL_WORD : ZIMG_PIXEL_BYTE;
471  format->color_family = (desc->flags & AV_PIX_FMT_FLAG_RGB) ? ZIMG_COLOR_RGB : ZIMG_COLOR_YUV;
472  format->matrix_coefficients = (desc->flags & AV_PIX_FMT_FLAG_RGB) ? ZIMG_MATRIX_RGB : colorspace == -1 ? convert_matrix(frame->colorspace) : colorspace;
473  format->color_primaries = primaries == -1 ? convert_primaries(frame->color_primaries) : primaries;
474  format->transfer_characteristics = transfer == - 1 ? convert_trc(frame->color_trc) : transfer;
475  format->pixel_range = (desc->flags & AV_PIX_FMT_FLAG_RGB) ? ZIMG_RANGE_FULL : range == -1 ? convert_range(frame->color_range) : range;
476  format->chroma_location = location == -1 ? convert_chroma_location(frame->chroma_location) : location;
477 }
478 
479 static int graph_build(zimg_filter_graph **graph, zimg_graph_builder_params *params,
480  zimg_image_format *src_format, zimg_image_format *dst_format,
481  void **tmp, size_t *tmp_size)
482 {
483  int ret;
484  size_t size;
485 
486  zimg_filter_graph_free(*graph);
487  *graph = zimg_filter_graph_build(src_format, dst_format, params);
488  if (!*graph)
489  return print_zimg_error(NULL);
490 
491  ret = zimg_filter_graph_get_tmp_size(*graph, &size);
492  if (ret)
493  return print_zimg_error(NULL);
494 
495  if (size > *tmp_size) {
496  av_freep(tmp);
497  *tmp = av_malloc(size);
498  if (!*tmp)
499  return AVERROR(ENOMEM);
500 
501  *tmp_size = size;
502  }
503 
504  return 0;
505 }
506 
508 {
509  AVFrame *aligned = NULL;
510  int ret = 0, plane;
511 
512  /* Realign any unaligned input frame. */
513  for (plane = 0; plane < 3; plane++) {
514  int p = desc->comp[plane].plane;
515  if ((uintptr_t)(*frame)->data[p] % ZIMG_ALIGNMENT || (*frame)->linesize[p] % ZIMG_ALIGNMENT) {
516  if (!(aligned = av_frame_alloc())) {
517  ret = AVERROR(ENOMEM);
518  goto fail;
519  }
520 
521  aligned->format = (*frame)->format;
522  aligned->width = (*frame)->width;
523  aligned->height = (*frame)->height;
524 
525  if ((ret = av_frame_get_buffer(aligned, ZIMG_ALIGNMENT)) < 0)
526  goto fail;
527 
528  if ((ret = av_frame_copy(aligned, *frame)) < 0)
529  goto fail;
530 
531  if ((ret = av_frame_copy_props(aligned, *frame)) < 0)
532  goto fail;
533 
534  av_frame_free(frame);
535  *frame = aligned;
536  return 0;
537  }
538  }
539 
540 fail:
541  av_frame_free(&aligned);
542  return ret;
543 }
544 
546 {
547  ZScaleContext *s = link->dst->priv;
548  AVFilterLink *outlink = link->dst->outputs[0];
550  const AVPixFmtDescriptor *odesc = av_pix_fmt_desc_get(outlink->format);
551  zimg_image_buffer_const src_buf = { ZIMG_API_VERSION };
552  zimg_image_buffer dst_buf = { ZIMG_API_VERSION };
553  char buf[32];
554  int ret = 0, plane;
555  AVFrame *out = NULL;
556 
557  if ((ret = realign_frame(desc, &in)) < 0)
558  goto fail;
559 
560  if (!(out = ff_get_video_buffer(outlink, outlink->w, outlink->h))) {
561  ret = AVERROR(ENOMEM);
562  goto fail;
563  }
564 
565  av_frame_copy_props(out, in);
566  out->width = outlink->w;
567  out->height = outlink->h;
568 
569  if( in->width != link->w
570  || in->height != link->h
571  || in->format != link->format
572  || s->in_colorspace != in->colorspace
573  || s->in_trc != in->color_trc
574  || s->in_primaries != in->color_primaries
575  || s->in_range != in->color_range
576  || s->out_colorspace != out->colorspace
577  || s->out_trc != out->color_trc
578  || s->out_primaries != out->color_primaries
579  || s->out_range != out->color_range
580  || s->in_chromal != in->chroma_location
581  || s->out_chromal != out->chroma_location) {
582  snprintf(buf, sizeof(buf)-1, "%d", outlink->w);
583  av_opt_set(s, "w", buf, 0);
584  snprintf(buf, sizeof(buf)-1, "%d", outlink->h);
585  av_opt_set(s, "h", buf, 0);
586 
587  link->dst->inputs[0]->format = in->format;
588  link->dst->inputs[0]->w = in->width;
589  link->dst->inputs[0]->h = in->height;
590 
591  if ((ret = config_props(outlink)) < 0)
592  goto fail;
593 
594  zimg_image_format_default(&s->src_format, ZIMG_API_VERSION);
595  zimg_image_format_default(&s->dst_format, ZIMG_API_VERSION);
596  zimg_graph_builder_params_default(&s->params, ZIMG_API_VERSION);
597 
598  s->params.dither_type = s->dither;
599  s->params.cpu_type = ZIMG_CPU_AUTO;
600  s->params.resample_filter = s->filter;
601  s->params.resample_filter_uv = s->filter;
602  s->params.nominal_peak_luminance = s->nominal_peak_luminance;
603  s->params.allow_approximate_gamma = s->approximate_gamma;
604 
605  format_init(&s->src_format, in, desc, s->colorspace_in,
606  s->primaries_in, s->trc_in, s->range_in, s->chromal_in);
607  format_init(&s->dst_format, out, odesc, s->colorspace,
608  s->primaries, s->trc, s->range, s->chromal);
609 
610  if (s->colorspace != -1)
611  out->colorspace = (int)s->dst_format.matrix_coefficients;
612 
613  if (s->primaries != -1)
614  out->color_primaries = (int)s->dst_format.color_primaries;
615 
616  if (s->range != -1)
617  out->color_range = (int)s->dst_format.pixel_range + 1;
618 
619  if (s->trc != -1)
620  out->color_trc = (int)s->dst_format.transfer_characteristics;
621 
622  if (s->chromal != -1)
623  out->chroma_location = (int)s->dst_format.chroma_location - 1;
624 
625  ret = graph_build(&s->graph, &s->params, &s->src_format, &s->dst_format,
626  &s->tmp, &s->tmp_size);
627  if (ret < 0)
628  goto fail;
629 
630  s->in_colorspace = in->colorspace;
631  s->in_trc = in->color_trc;
632  s->in_primaries = in->color_primaries;
633  s->in_range = in->color_range;
634  s->out_colorspace = out->colorspace;
635  s->out_trc = out->color_trc;
636  s->out_primaries = out->color_primaries;
637  s->out_range = out->color_range;
638 
639  if (desc->flags & AV_PIX_FMT_FLAG_ALPHA && odesc->flags & AV_PIX_FMT_FLAG_ALPHA) {
640  zimg_image_format_default(&s->alpha_src_format, ZIMG_API_VERSION);
641  zimg_image_format_default(&s->alpha_dst_format, ZIMG_API_VERSION);
642  zimg_graph_builder_params_default(&s->alpha_params, ZIMG_API_VERSION);
643 
644  s->alpha_params.dither_type = s->dither;
645  s->alpha_params.cpu_type = ZIMG_CPU_AUTO;
646  s->alpha_params.resample_filter = s->filter;
647 
648  s->alpha_src_format.width = in->width;
649  s->alpha_src_format.height = in->height;
650  s->alpha_src_format.depth = desc->comp[0].depth;
651  s->alpha_src_format.pixel_type = (desc->flags & AV_PIX_FMT_FLAG_FLOAT) ? ZIMG_PIXEL_FLOAT : desc->comp[0].depth > 8 ? ZIMG_PIXEL_WORD : ZIMG_PIXEL_BYTE;
652  s->alpha_src_format.color_family = ZIMG_COLOR_GREY;
653 
654  s->alpha_dst_format.width = out->width;
655  s->alpha_dst_format.height = out->height;
656  s->alpha_dst_format.depth = odesc->comp[0].depth;
657  s->alpha_dst_format.pixel_type = (odesc->flags & AV_PIX_FMT_FLAG_FLOAT) ? ZIMG_PIXEL_FLOAT : odesc->comp[0].depth > 8 ? ZIMG_PIXEL_WORD : ZIMG_PIXEL_BYTE;
658  s->alpha_dst_format.color_family = ZIMG_COLOR_GREY;
659 
660  zimg_filter_graph_free(s->alpha_graph);
661  s->alpha_graph = zimg_filter_graph_build(&s->alpha_src_format, &s->alpha_dst_format, &s->alpha_params);
662  if (!s->alpha_graph) {
663  ret = print_zimg_error(link->dst);
664  goto fail;
665  }
666  }
667  }
668 
669  if (s->colorspace != -1)
670  out->colorspace = (int)s->dst_format.matrix_coefficients;
671 
672  if (s->primaries != -1)
673  out->color_primaries = (int)s->dst_format.color_primaries;
674 
675  if (s->range != -1)
676  out->color_range = (int)s->dst_format.pixel_range;
677 
678  if (s->trc != -1)
679  out->color_trc = (int)s->dst_format.transfer_characteristics;
680 
682  (int64_t)in->sample_aspect_ratio.num * outlink->h * link->w,
683  (int64_t)in->sample_aspect_ratio.den * outlink->w * link->h,
684  INT_MAX);
685 
686  for (plane = 0; plane < 3; plane++) {
687  int p = desc->comp[plane].plane;
688  src_buf.plane[plane].data = in->data[p];
689  src_buf.plane[plane].stride = in->linesize[p];
690  src_buf.plane[plane].mask = -1;
691 
692  p = odesc->comp[plane].plane;
693  dst_buf.plane[plane].data = out->data[p];
694  dst_buf.plane[plane].stride = out->linesize[p];
695  dst_buf.plane[plane].mask = -1;
696  }
697 
698  ret = zimg_filter_graph_process(s->graph, &src_buf, &dst_buf, s->tmp, 0, 0, 0, 0);
699  if (ret) {
700  ret = print_zimg_error(link->dst);
701  goto fail;
702  }
703 
704  if (desc->flags & AV_PIX_FMT_FLAG_ALPHA && odesc->flags & AV_PIX_FMT_FLAG_ALPHA) {
705  src_buf.plane[0].data = in->data[3];
706  src_buf.plane[0].stride = in->linesize[3];
707  src_buf.plane[0].mask = -1;
708 
709  dst_buf.plane[0].data = out->data[3];
710  dst_buf.plane[0].stride = out->linesize[3];
711  dst_buf.plane[0].mask = -1;
712 
713  ret = zimg_filter_graph_process(s->alpha_graph, &src_buf, &dst_buf, s->tmp, 0, 0, 0, 0);
714  if (ret) {
715  ret = print_zimg_error(link->dst);
716  goto fail;
717  }
718  } else if (odesc->flags & AV_PIX_FMT_FLAG_ALPHA) {
719  int x, y;
720 
721  if (odesc->flags & AV_PIX_FMT_FLAG_FLOAT) {
722  for (y = 0; y < out->height; y++) {
723  for (x = 0; x < out->width; x++) {
724  AV_WN32(out->data[3] + x * odesc->comp[3].step + y * out->linesize[3],
725  av_float2int(1.0f));
726  }
727  }
728  } else {
729  for (y = 0; y < outlink->h; y++)
730  memset(out->data[3] + y * out->linesize[3], 0xff, outlink->w);
731  }
732  }
733 
734 fail:
735  av_frame_free(&in);
736  if (ret) {
737  av_frame_free(&out);
738  return ret;
739  }
740 
741  return ff_filter_frame(outlink, out);
742 }
743 
745 {
746  ZScaleContext *s = ctx->priv;
747 
748  zimg_filter_graph_free(s->graph);
749  zimg_filter_graph_free(s->alpha_graph);
750  av_freep(&s->tmp);
751  s->tmp_size = 0;
752 }
753 
754 static int process_command(AVFilterContext *ctx, const char *cmd, const char *args,
755  char *res, int res_len, int flags)
756 {
757  ZScaleContext *s = ctx->priv;
758  int ret;
759 
760  if ( !strcmp(cmd, "width") || !strcmp(cmd, "w")
761  || !strcmp(cmd, "height") || !strcmp(cmd, "h")) {
762 
763  int old_w = s->w;
764  int old_h = s->h;
765  AVFilterLink *outlink = ctx->outputs[0];
766 
767  av_opt_set(s, cmd, args, 0);
768  if ((ret = config_props(outlink)) < 0) {
769  s->w = old_w;
770  s->h = old_h;
771  }
772  } else
773  ret = AVERROR(ENOSYS);
774 
775  return ret;
776 }
777 
778 #define OFFSET(x) offsetof(ZScaleContext, x)
779 #define FLAGS AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_FILTERING_PARAM
780 #define TFLAGS AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_RUNTIME_PARAM
781 
782 static const AVOption zscale_options[] = {
783  { "w", "Output video width", OFFSET(w_expr), AV_OPT_TYPE_STRING, .flags = TFLAGS },
784  { "width", "Output video width", OFFSET(w_expr), AV_OPT_TYPE_STRING, .flags = TFLAGS },
785  { "h", "Output video height", OFFSET(h_expr), AV_OPT_TYPE_STRING, .flags = TFLAGS },
786  { "height", "Output video height", OFFSET(h_expr), AV_OPT_TYPE_STRING, .flags = TFLAGS },
787  { "size", "set video size", OFFSET(size_str), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, FLAGS },
788  { "s", "set video size", OFFSET(size_str), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, FLAGS },
789  { "dither", "set dither type", OFFSET(dither), AV_OPT_TYPE_INT, {.i64 = 0}, 0, ZIMG_DITHER_ERROR_DIFFUSION, FLAGS, "dither" },
790  { "d", "set dither type", OFFSET(dither), AV_OPT_TYPE_INT, {.i64 = 0}, 0, ZIMG_DITHER_ERROR_DIFFUSION, FLAGS, "dither" },
791  { "none", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_DITHER_NONE}, 0, 0, FLAGS, "dither" },
792  { "ordered", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_DITHER_ORDERED}, 0, 0, FLAGS, "dither" },
793  { "random", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_DITHER_RANDOM}, 0, 0, FLAGS, "dither" },
794  { "error_diffusion", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_DITHER_ERROR_DIFFUSION}, 0, 0, FLAGS, "dither" },
795  { "filter", "set filter type", OFFSET(filter), AV_OPT_TYPE_INT, {.i64 = ZIMG_RESIZE_BILINEAR}, 0, ZIMG_RESIZE_LANCZOS, FLAGS, "filter" },
796  { "f", "set filter type", OFFSET(filter), AV_OPT_TYPE_INT, {.i64 = ZIMG_RESIZE_BILINEAR}, 0, ZIMG_RESIZE_LANCZOS, FLAGS, "filter" },
797  { "point", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_RESIZE_POINT}, 0, 0, FLAGS, "filter" },
798  { "bilinear", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_RESIZE_BILINEAR}, 0, 0, FLAGS, "filter" },
799  { "bicubic", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_RESIZE_BICUBIC}, 0, 0, FLAGS, "filter" },
800  { "spline16", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_RESIZE_SPLINE16}, 0, 0, FLAGS, "filter" },
801  { "spline36", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_RESIZE_SPLINE36}, 0, 0, FLAGS, "filter" },
802  { "lanczos", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_RESIZE_LANCZOS}, 0, 0, FLAGS, "filter" },
803  { "out_range", "set color range", OFFSET(range), AV_OPT_TYPE_INT, {.i64 = -1}, -1, ZIMG_RANGE_FULL, FLAGS, "range" },
804  { "range", "set color range", OFFSET(range), AV_OPT_TYPE_INT, {.i64 = -1}, -1, ZIMG_RANGE_FULL, FLAGS, "range" },
805  { "r", "set color range", OFFSET(range), AV_OPT_TYPE_INT, {.i64 = -1}, -1, ZIMG_RANGE_FULL, FLAGS, "range" },
806  { "input", 0, 0, AV_OPT_TYPE_CONST, {.i64 = -1}, 0, 0, FLAGS, "range" },
807  { "limited", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_RANGE_LIMITED}, 0, 0, FLAGS, "range" },
808  { "full", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_RANGE_FULL}, 0, 0, FLAGS, "range" },
809  { "unknown", 0, 0, AV_OPT_TYPE_CONST, {.i64 = -1}, 0, 0, FLAGS, "range" },
810  { "tv", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_RANGE_LIMITED}, 0, 0, FLAGS, "range" },
811  { "pc", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_RANGE_FULL}, 0, 0, FLAGS, "range" },
812  { "primaries", "set color primaries", OFFSET(primaries), AV_OPT_TYPE_INT, {.i64 = -1}, -1, INT_MAX, FLAGS, "primaries" },
813  { "p", "set color primaries", OFFSET(primaries), AV_OPT_TYPE_INT, {.i64 = -1}, -1, INT_MAX, FLAGS, "primaries" },
814  { "input", 0, 0, AV_OPT_TYPE_CONST, {.i64 = -1}, 0, 0, FLAGS, "primaries" },
815  { "709", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_PRIMARIES_709}, 0, 0, FLAGS, "primaries" },
816  { "unspecified", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_PRIMARIES_UNSPECIFIED}, 0, 0, FLAGS, "primaries" },
817  { "170m", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_PRIMARIES_170M}, 0, 0, FLAGS, "primaries" },
818  { "240m", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_PRIMARIES_240M}, 0, 0, FLAGS, "primaries" },
819  { "2020", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_PRIMARIES_2020}, 0, 0, FLAGS, "primaries" },
820  { "unknown", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_PRIMARIES_UNSPECIFIED}, 0, 0, FLAGS, "primaries" },
821  { "bt709", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_PRIMARIES_709}, 0, 0, FLAGS, "primaries" },
822  { "bt470m", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_PRIMARIES_470_M}, 0, 0, FLAGS, "primaries" },
823  { "bt470bg", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_PRIMARIES_470_BG}, 0, 0, FLAGS, "primaries" },
824  { "smpte170m", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_PRIMARIES_170M}, 0, 0, FLAGS, "primaries" },
825  { "smpte240m", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_PRIMARIES_240M}, 0, 0, FLAGS, "primaries" },
826  { "film", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_PRIMARIES_FILM}, 0, 0, FLAGS, "primaries" },
827  { "bt2020", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_PRIMARIES_2020}, 0, 0, FLAGS, "primaries" },
828  { "smpte428", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_PRIMARIES_ST428}, 0, 0, FLAGS, "primaries" },
829  { "smpte431", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_PRIMARIES_ST431_2}, 0, 0, FLAGS, "primaries" },
830  { "smpte432", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_PRIMARIES_ST432_1}, 0, 0, FLAGS, "primaries" },
831  { "jedec-p22", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_PRIMARIES_EBU3213_E}, 0, 0, FLAGS, "primaries" },
832  { "ebu3213", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_PRIMARIES_EBU3213_E}, 0, 0, FLAGS, "primaries" },
833  { "transfer", "set transfer characteristic", OFFSET(trc), AV_OPT_TYPE_INT, {.i64 = -1}, -1, INT_MAX, FLAGS, "transfer" },
834  { "t", "set transfer characteristic", OFFSET(trc), AV_OPT_TYPE_INT, {.i64 = -1}, -1, INT_MAX, FLAGS, "transfer" },
835  { "input", 0, 0, AV_OPT_TYPE_CONST, {.i64 = -1}, 0, 0, FLAGS, "transfer" },
836  { "709", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_TRANSFER_709}, 0, 0, FLAGS, "transfer" },
837  { "unspecified", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_TRANSFER_UNSPECIFIED}, 0, 0, FLAGS, "transfer" },
838  { "601", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_TRANSFER_601}, 0, 0, FLAGS, "transfer" },
839  { "linear", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_TRANSFER_LINEAR}, 0, 0, FLAGS, "transfer" },
840  { "2020_10", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_TRANSFER_2020_10}, 0, 0, FLAGS, "transfer" },
841  { "2020_12", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_TRANSFER_2020_12}, 0, 0, FLAGS, "transfer" },
842  { "unknown", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_TRANSFER_UNSPECIFIED}, 0, 0, FLAGS, "transfer" },
843  { "bt470m", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_TRANSFER_470_M}, 0, 0, FLAGS, "transfer" },
844  { "bt470bg", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_TRANSFER_470_BG}, 0, 0, FLAGS, "transfer" },
845  { "smpte170m", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_TRANSFER_601}, 0, 0, FLAGS, "transfer" },
846  { "bt709", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_TRANSFER_709}, 0, 0, FLAGS, "transfer" },
847  { "linear", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_TRANSFER_LINEAR}, 0, 0, FLAGS, "transfer" },
848  { "log100", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_TRANSFER_LOG_100}, 0, 0, FLAGS, "transfer" },
849  { "log316", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_TRANSFER_LOG_316}, 0, 0, FLAGS, "transfer" },
850  { "bt2020-10", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_TRANSFER_2020_10}, 0, 0, FLAGS, "transfer" },
851  { "bt2020-12", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_TRANSFER_2020_12}, 0, 0, FLAGS, "transfer" },
852  { "smpte2084", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_TRANSFER_ST2084}, 0, 0, FLAGS, "transfer" },
853  { "iec61966-2-4", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_TRANSFER_IEC_61966_2_4},0, 0, FLAGS, "transfer" },
854  { "iec61966-2-1", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_TRANSFER_IEC_61966_2_1},0, 0, FLAGS, "transfer" },
855  { "arib-std-b67", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_TRANSFER_ARIB_B67}, 0, 0, FLAGS, "transfer" },
856  { "matrix", "set colorspace matrix", OFFSET(colorspace), AV_OPT_TYPE_INT, {.i64 = -1}, -1, INT_MAX, FLAGS, "matrix" },
857  { "m", "set colorspace matrix", OFFSET(colorspace), AV_OPT_TYPE_INT, {.i64 = -1}, -1, INT_MAX, FLAGS, "matrix" },
858  { "input", 0, 0, AV_OPT_TYPE_CONST, {.i64 = -1}, 0, 0, FLAGS, "matrix" },
859  { "709", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_MATRIX_709}, 0, 0, FLAGS, "matrix" },
860  { "unspecified", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_MATRIX_UNSPECIFIED}, 0, 0, FLAGS, "matrix" },
861  { "470bg", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_MATRIX_470BG}, 0, 0, FLAGS, "matrix" },
862  { "170m", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_MATRIX_170M}, 0, 0, FLAGS, "matrix" },
863  { "2020_ncl", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_MATRIX_2020_NCL}, 0, 0, FLAGS, "matrix" },
864  { "2020_cl", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_MATRIX_2020_CL}, 0, 0, FLAGS, "matrix" },
865  { "unknown", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_MATRIX_UNSPECIFIED}, 0, 0, FLAGS, "matrix" },
866  { "gbr", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_MATRIX_RGB}, 0, 0, FLAGS, "matrix" },
867  { "bt709", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_MATRIX_709}, 0, 0, FLAGS, "matrix" },
868  { "fcc", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_MATRIX_FCC}, 0, 0, FLAGS, "matrix" },
869  { "bt470bg", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_MATRIX_470BG}, 0, 0, FLAGS, "matrix" },
870  { "smpte170m", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_MATRIX_170M}, 0, 0, FLAGS, "matrix" },
871  { "smpte2400m", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_MATRIX_240M}, 0, 0, FLAGS, "matrix" },
872  { "ycgco", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_MATRIX_YCGCO}, 0, 0, FLAGS, "matrix" },
873  { "bt2020nc", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_MATRIX_2020_NCL}, 0, 0, FLAGS, "matrix" },
874  { "bt2020c", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_MATRIX_2020_CL}, 0, 0, FLAGS, "matrix" },
875  { "chroma-derived-nc",0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_MATRIX_CHROMATICITY_DERIVED_NCL}, 0, 0, FLAGS, "matrix" },
876  { "chroma-derived-c", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_MATRIX_CHROMATICITY_DERIVED_CL}, 0, 0, FLAGS, "matrix" },
877  { "ictcp", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_MATRIX_ICTCP}, 0, 0, FLAGS, "matrix" },
878  { "in_range", "set input color range", OFFSET(range_in), AV_OPT_TYPE_INT, {.i64 = -1}, -1, ZIMG_RANGE_FULL, FLAGS, "range" },
879  { "rangein", "set input color range", OFFSET(range_in), AV_OPT_TYPE_INT, {.i64 = -1}, -1, ZIMG_RANGE_FULL, FLAGS, "range" },
880  { "rin", "set input color range", OFFSET(range_in), AV_OPT_TYPE_INT, {.i64 = -1}, -1, ZIMG_RANGE_FULL, FLAGS, "range" },
881  { "primariesin", "set input color primaries", OFFSET(primaries_in), AV_OPT_TYPE_INT, {.i64 = -1}, -1, INT_MAX, FLAGS, "primaries" },
882  { "pin", "set input color primaries", OFFSET(primaries_in), AV_OPT_TYPE_INT, {.i64 = -1}, -1, INT_MAX, FLAGS, "primaries" },
883  { "transferin", "set input transfer characteristic", OFFSET(trc_in), AV_OPT_TYPE_INT, {.i64 = -1}, -1, INT_MAX, FLAGS, "transfer" },
884  { "tin", "set input transfer characteristic", OFFSET(trc_in), AV_OPT_TYPE_INT, {.i64 = -1}, -1, INT_MAX, FLAGS, "transfer" },
885  { "matrixin", "set input colorspace matrix", OFFSET(colorspace_in), AV_OPT_TYPE_INT, {.i64 = -1}, -1, INT_MAX, FLAGS, "matrix" },
886  { "min", "set input colorspace matrix", OFFSET(colorspace_in), AV_OPT_TYPE_INT, {.i64 = -1}, -1, INT_MAX, FLAGS, "matrix" },
887  { "chromal", "set output chroma location", OFFSET(chromal), AV_OPT_TYPE_INT, {.i64 = -1}, -1, ZIMG_CHROMA_BOTTOM, FLAGS, "chroma" },
888  { "c", "set output chroma location", OFFSET(chromal), AV_OPT_TYPE_INT, {.i64 = -1}, -1, ZIMG_CHROMA_BOTTOM, FLAGS, "chroma" },
889  { "input", 0, 0, AV_OPT_TYPE_CONST, {.i64 = -1}, 0, 0, FLAGS, "chroma" },
890  { "left", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_CHROMA_LEFT}, 0, 0, FLAGS, "chroma" },
891  { "center", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_CHROMA_CENTER}, 0, 0, FLAGS, "chroma" },
892  { "topleft", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_CHROMA_TOP_LEFT}, 0, 0, FLAGS, "chroma" },
893  { "top", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_CHROMA_TOP}, 0, 0, FLAGS, "chroma" },
894  { "bottomleft",0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_CHROMA_BOTTOM_LEFT}, 0, 0, FLAGS, "chroma" },
895  { "bottom", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_CHROMA_BOTTOM}, 0, 0, FLAGS, "chroma" },
896  { "chromalin", "set input chroma location", OFFSET(chromal_in), AV_OPT_TYPE_INT, {.i64 = -1}, -1, ZIMG_CHROMA_BOTTOM, FLAGS, "chroma" },
897  { "cin", "set input chroma location", OFFSET(chromal_in), AV_OPT_TYPE_INT, {.i64 = -1}, -1, ZIMG_CHROMA_BOTTOM, FLAGS, "chroma" },
898  { "npl", "set nominal peak luminance", OFFSET(nominal_peak_luminance), AV_OPT_TYPE_DOUBLE, {.dbl = NAN}, 0, DBL_MAX, FLAGS },
899  { "agamma", "allow approximate gamma", OFFSET(approximate_gamma), AV_OPT_TYPE_BOOL, {.i64 = 1}, 0, 1, FLAGS },
900  { NULL }
901 };
902 
903 AVFILTER_DEFINE_CLASS(zscale);
904 
906  {
907  .name = "default",
908  .type = AVMEDIA_TYPE_VIDEO,
909  .filter_frame = filter_frame,
910  },
911  { NULL }
912 };
913 
915  {
916  .name = "default",
917  .type = AVMEDIA_TYPE_VIDEO,
918  .config_props = config_props,
919  },
920  { NULL }
921 };
922 
924  .name = "zscale",
925  .description = NULL_IF_CONFIG_SMALL("Apply resizing, colorspace and bit depth conversion."),
926  .init_dict = init_dict,
927  .query_formats = query_formats,
928  .priv_size = sizeof(ZScaleContext),
929  .priv_class = &zscale_class,
930  .uninit = uninit,
931  .inputs = avfilter_vf_zscale_inputs,
932  .outputs = avfilter_vf_zscale_outputs,
934 };
ITU-R BT2020 for 12-bit system.
Definition: pixfmt.h:499
also ITU-R BT1361 / IEC 61966-2-4 xvYCC709 / SMPTE RP177 Annex B
Definition: pixfmt.h:514
static const AVFilterPad avfilter_vf_zscale_outputs[]
Definition: vf_zscale.c:914
int plane
Which of the 4 planes contains the component.
Definition: pixdesc.h:35
#define NULL
Definition: coverity.c:32
#define AV_PIX_FMT_YUVA422P16
Definition: pixfmt.h:442
IEC 61966-2-4.
Definition: pixfmt.h:495
#define AV_PIX_FMT_YUVA422P9
Definition: pixfmt.h:434
const AVPixFmtDescriptor * av_pix_fmt_desc_get(enum AVPixelFormat pix_fmt)
Definition: pixdesc.c:2573
MPEG-2/4 4:2:0, H.264 default for 4:2:0.
Definition: pixfmt.h:607
This structure describes decoded (raw) audio or video data.
Definition: frame.h:308
int out_v_chr_pos
Definition: vf_zscale.c:109
AVOption.
Definition: opt.h:248
"Linear transfer characteristics"
Definition: pixfmt.h:492
#define AV_PIX_FMT_YUVA420P10
Definition: pixfmt.h:436
int av_parse_video_size(int *width_ptr, int *height_ptr, const char *str)
Parse str and put in width_ptr and height_ptr the detected values.
Definition: parseutils.c:148
#define AV_PIX_FMT_YUV444P14
Definition: pixfmt.h:409
#define AV_PIX_FMT_YUVA422P10
Definition: pixfmt.h:437
const char * desc
Definition: libsvtav1.c:79
planar YUV 4:4:4, 24bpp, (1 Cr & Cb sample per 1x1 Y samples)
Definition: pixfmt.h:71
misc image utilities
Main libavfilter public API header.
also ITU-R BT601-6 625 / ITU-R BT1358 625 / ITU-R BT1700 625 PAL & SECAM / IEC 61966-2-4 xvYCC601 ...
Definition: pixfmt.h:518
SMPTE ST 432-1 (2010) / P3 D65 / Display P3.
Definition: pixfmt.h:473
planar GBR 4:4:4 24bpp
Definition: pixfmt.h:168
int num
Numerator.
Definition: rational.h:59
#define AV_PIX_FMT_GBRP10
Definition: pixfmt.h:415
also ITU-R BT601-6 525 / ITU-R BT1358 525 / ITU-R BT1700 NTSC
Definition: pixfmt.h:519
zimg_image_format dst_format
Definition: vf_zscale.c:118
SMPTE ST 431-2 (2011) / DCI P3.
Definition: pixfmt.h:472
color_range
#define AV_PIX_FMT_YUV420P12
Definition: pixfmt.h:403
AVFrame * ff_get_video_buffer(AVFilterLink *link, int w, int h)
Request a picture buffer with a specific set of permissions.
Definition: video.c:99
int approximate_gamma
Definition: vf_zscale.c:103
zimg_graph_builder_params alpha_params
Definition: vf_zscale.c:120
enum AVColorSpace in_colorspace out_colorspace
Definition: vf_zscale.c:123
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 format(the sample packing is implied by the sample format) and sample rate.The lists are not just lists
order of coefficients is actually GBR, also IEC 61966-2-1 (sRGB)
Definition: pixfmt.h:513
uint8_t log2_chroma_w
Amount to shift the luma width right to find the chroma width.
Definition: pixdesc.h:92
AVColorTransferCharacteristic
Color Transfer Characteristic.
Definition: pixfmt.h:483
char * w_expr
width expression string
Definition: vf_zscale.c:105
functionally identical to above
Definition: pixfmt.h:520
AVFilterFormats * ff_make_format_list(const int *fmts)
Create a list of supported formats.
Definition: formats.c:287
const char * name
Pad name.
Definition: internal.h:60
zimg_filter_graph * alpha_graph
Definition: vf_zscale.c:121
AVFilterLink ** inputs
array of pointers to input links
Definition: avfilter.h:349
int ff_filter_frame(AVFilterLink *link, AVFrame *frame)
Send a frame of data to the next filter.
Definition: avfilter.c:1091
static int print_zimg_error(AVFilterContext *ctx)
Definition: vf_zscale.c:319
enum AVColorPrimaries in_primaries out_primaries
Definition: vf_zscale.c:125
planar YUV 4:2:0, 20bpp, (1 Cr & Cb sample per 2x2 Y & A samples)
Definition: pixfmt.h:101
AVComponentDescriptor comp[4]
Parameters that describe how pixels are packed.
Definition: pixdesc.h:117
zimg_image_format alpha_dst_format
Definition: vf_zscale.c:119
#define av_cold
Definition: attributes.h:88
#define AV_PIX_FMT_FLAG_ALPHA
The pixel format has an alpha channel.
Definition: pixdesc.h:179
#define av_malloc(s)
AVFrame * av_frame_alloc(void)
Allocate an AVFrame and set its fields to default values.
Definition: frame.c:190
AVOptions.
AVColorSpace
YUV colorspace type.
Definition: pixfmt.h:512
#define f(width, name)
Definition: cbs_vp9.c:255
#define AV_PIX_FMT_FLAG_FLOAT
The pixel format contains IEEE-754 floating point values.
Definition: pixdesc.h:190
Used by Dirac / VC-2 and H.264 FRext, see ITU-T SG16.
Definition: pixfmt.h:521
also ITU-R BT470M / ITU-R BT1700 625 PAL & SECAM
Definition: pixfmt.h:488
AVFILTER_DEFINE_CLASS(zscale)
#define AV_PIX_FMT_YUVA420P9
Definition: pixfmt.h:433
#define AV_PIX_FMT_GBRP9
Definition: pixfmt.h:414
planar YUV 4:4:0 full scale (JPEG), deprecated in favor of AV_PIX_FMT_YUV440P and setting color_range...
Definition: pixfmt.h:100
static int realign_frame(const AVPixFmtDescriptor *desc, AVFrame **frame)
Definition: vf_zscale.c:507
int in_h_chr_pos
Definition: vf_zscale.c:110
planar YUV 4:2:2, 16bpp, full scale (JPEG), deprecated in favor of AV_PIX_FMT_YUV422P and setting col...
Definition: pixfmt.h:79
#define AV_LOG_VERBOSE
Detailed information.
Definition: log.h:210
static const AVFilterPad avfilter_vf_zscale_inputs[]
Definition: vf_zscale.c:905
static int convert_range(enum AVColorRange color_range)
Definition: vf_zscale.c:450
#define AV_PIX_FMT_YUV444P16
Definition: pixfmt.h:412
AVColorRange
Visual content value range.
Definition: pixfmt.h:551
ptrdiff_t size
Definition: opengl_enc.c:100
int av_reduce(int *dst_num, int *dst_den, int64_t num, int64_t den, int64_t max)
Reduce a fraction.
Definition: rational.c:35
#define AV_PIX_FMT_YUV422P12
Definition: pixfmt.h:404
#define AV_PIX_FMT_YUVA420P16
Definition: pixfmt.h:441
AVColorPrimaries
Chromaticity coordinates of the source primaries.
Definition: pixfmt.h:458
#define av_log(a,...)
static int convert_matrix(enum AVColorSpace colorspace)
Definition: vf_zscale.c:349
static int query_formats(AVFilterContext *ctx)
Definition: vf_zscale.c:164
A filter pad used for either input or output.
Definition: internal.h:54
static int aligned(int val)
Definition: dashdec.c:167
enum AVColorRange in_range out_range
Definition: vf_zscale.c:126
static void format_init(zimg_image_format *format, AVFrame *frame, const AVPixFmtDescriptor *desc, int colorspace, int primaries, int transfer, int range, int location)
Definition: vf_zscale.c:462
also FCC Title 47 Code of Federal Regulations 73.682 (a)(20)
Definition: pixfmt.h:463
int av_expr_parse_and_eval(double *d, const char *s, const char *const *const_names, const double *const_values, const char *const *func1_names, double(*const *funcs1)(void *, double), const char *const *func2_names, double(*const *funcs2)(void *, double, double), void *opaque, int log_offset, void *log_ctx)
Parse and evaluate an expression.
Definition: eval.c:776
planar YUV 4:2:2 24bpp, (1 Cr & Cb sample per 2x1 Y & A samples)
Definition: pixfmt.h:176
int width
Definition: frame.h:366
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:194
uint8_t log2_chroma_h
Amount to shift the luma height right to find the chroma height.
Definition: pixdesc.h:101
static av_cold int init_dict(AVFilterContext *ctx, AVDictionary **opts)
Definition: vf_zscale.c:130
#define AV_PIX_FMT_FLAG_RGB
The pixel format contains RGB-like data (as opposed to YUV/grayscale).
Definition: pixdesc.h:148
static int filter_frame(AVFilterLink *link, AVFrame *in)
Definition: vf_zscale.c:545
void av_frame_free(AVFrame **frame)
Free the frame and any dynamically allocated objects in it, e.g.
Definition: frame.c:203
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
Definition: internal.h:153
void * tmp
Definition: vf_zscale.c:115
void * priv
private data for use by the filter
Definition: avfilter.h:356
enum AVColorRange color_range
MPEG vs JPEG YUV range.
Definition: frame.h:552
AVFilterFormats * formats
List of supported formats (pixel or sample).
Definition: avfilter.h:445
#define OFFSET(x)
Definition: vf_zscale.c:778
#define AV_PIX_FMT_YUVA444P16
Definition: pixfmt.h:443
GLenum GLint * params
Definition: opengl_enc.c:113
enum AVColorSpace colorspace
YUV colorspace type.
Definition: frame.h:563
zimg_image_format alpha_src_format
Definition: vf_zscale.c:119
also ITU-R BT1361 / IEC 61966-2-4 / SMPTE RP177 Annex B
Definition: pixfmt.h:460
simple assert() macros that are a bit more flexible than ISO C assert().
SMPTE ST 428-1 (CIE 1931 XYZ)
Definition: pixfmt.h:470
#define AV_PIX_FMT_YUV444P10
Definition: pixfmt.h:402
#define ZIMG_ALIGNMENT
Definition: vf_zscale.c:47
#define FFMAX(a, b)
Definition: common.h:94
#define fail()
Definition: checkasm.h:123
#define AV_PIX_FMT_GBRAP16
Definition: pixfmt.h:421
int av_frame_copy(AVFrame *dst, const AVFrame *src)
Copy the frame data from src to dst.
Definition: frame.c:812
int w
New dimensions.
Definition: vf_zscale.c:88
planar YUV 4:2:2, 16bpp, (1 Cr & Cb sample per 2x1 Y samples)
Definition: pixfmt.h:70
var_name
Definition: aeval.c:46
common internal API header
uint64_t flags
Combination of AV_PIX_FMT_FLAG_...
Definition: pixdesc.h:106
#define AV_PIX_FMT_YUV422P9
Definition: pixfmt.h:397
AVDictionary * opts
Definition: movenc.c:50
SMPTE ST 2084 for 10-, 12-, 14- and 16-bit systems.
Definition: pixfmt.h:500
#define AV_PIX_FMT_GBRP16
Definition: pixfmt.h:418
int64_t av_rescale(int64_t a, int64_t b, int64_t c)
Rescale a 64-bit integer with rounding to nearest.
Definition: mathematics.c:129
#define NAN
Definition: mathematics.h:64
#define FFMIN(a, b)
Definition: common.h:96
char * size_str
Definition: vf_zscale.c:101
zimg_filter_graph * graph
Definition: vf_zscale.c:121
planar YUV 4:2:0, 12bpp, full scale (JPEG), deprecated in favor of AV_PIX_FMT_YUV420P and setting col...
Definition: pixfmt.h:78
static int graph_build(zimg_filter_graph **graph, zimg_graph_builder_params *params, zimg_image_format *src_format, zimg_image_format *dst_format, void **tmp, size_t *tmp_size)
Definition: vf_zscale.c:479
colour filters using Illuminant C
Definition: pixfmt.h:468
int ff_formats_ref(AVFilterFormats *f, AVFilterFormats **ref)
Add *ref as a new reference to formats.
Definition: formats.c:467
ITU-R BT2020 non-constant luminance system.
Definition: pixfmt.h:523
ITU-R 601, SMPTE 274M 296M S314M(DV 4:1:1), mpeg2 4:2:2.
Definition: pixfmt.h:609
also ITU-R BT601-6 625 / ITU-R BT1358 625 / ITU-R BT1700 625 PAL & SECAM
Definition: pixfmt.h:465
static const struct ColorPrimaries color_primaries[AVCOL_PRI_NB]
AVFormatContext * ctx
Definition: movenc.c:48
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
#define s(width, name)
Definition: cbs_vp9.c:257
#define TFLAGS
Definition: vf_zscale.c:780
#define AV_PIX_FMT_YUVA444P10
Definition: pixfmt.h:438
#define AV_PIX_FMT_YUV444P9
Definition: pixfmt.h:398
#define AV_PIX_FMT_GBRP14
Definition: pixfmt.h:417
FCC Title 47 Code of Federal Regulations 73.682 (a)(20)
Definition: pixfmt.h:517
static const AVFilterPad outputs[]
Definition: af_acontrast.c:203
Full range content.
Definition: pixfmt.h:586
int colorspace_in
Definition: vf_zscale.c:96
if(ret)
#define AV_PIX_FMT_YUV420P16
Definition: pixfmt.h:410
int format
format of the frame, -1 if unknown or unset Values correspond to enum AVPixelFormat for video frames...
Definition: frame.h:381
also ITU-R BT1361
Definition: pixfmt.h:485
ITU-R BT.2100-0, ICtCp.
Definition: pixfmt.h:528
also ITU-R BT601-6 525 or 625 / ITU-R BT1358 525 or 625 / ITU-R BT1700 NTSC
Definition: pixfmt.h:490
#define AV_PIX_FMT_YUV420P14
Definition: pixfmt.h:407
zimg_graph_builder_params params
Definition: vf_zscale.c:120
double nominal_peak_luminance
Definition: vf_zscale.c:102
functionally identical to above
Definition: pixfmt.h:467
enum AVChromaLocation in_chromal out_chromal
Definition: vf_zscale.c:127
int linesize[AV_NUM_DATA_POINTERS]
For video, size in bytes of each picture line.
Definition: frame.h:339
planar YUV 4:4:4 32bpp, (1 Cr & Cb sample per 1x1 Y & A samples)
Definition: pixfmt.h:177
Descriptor that unambiguously describes how the bits of a pixel are stored in the up to 4 data planes...
Definition: pixdesc.h:81
Chromaticity-derived constant luminance system.
Definition: pixfmt.h:527
static int convert_trc(enum AVColorTransferCharacteristic color_trc)
Definition: vf_zscale.c:382
static const char *const var_names[]
Definition: vf_zscale.c:49
char * h_expr
height expression string
Definition: vf_zscale.c:106
AVRational sample_aspect_ratio
Sample aspect ratio for the video frame, 0/1 if unknown/unspecified.
Definition: frame.h:396
zimg_image_format src_format
Definition: vf_zscale.c:118
int out_h_chr_pos
Definition: vf_zscale.c:108
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 inputs
int primaries_in
Definition: vf_zscale.c:98
uint8_t pi<< 24) CONV_FUNC_GROUP(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_U8, uint8_t,(*(const uint8_t *) pi-0x80)*(1.0f/(1<< 7))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_U8, uint8_t,(*(const uint8_t *) pi-0x80)*(1.0/(1<< 7))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_S16, int16_t,(*(const int16_t *) pi >> 8)+0x80) CONV_FUNC_GROUP(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_S16, int16_t,*(const int16_t *) pi *(1.0f/(1<< 15))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_S16, int16_t,*(const int16_t *) pi *(1.0/(1<< 15))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_S32, int32_t,(*(const int32_t *) pi >> 24)+0x80) CONV_FUNC_GROUP(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_S32, int32_t,*(const int32_t *) pi *(1.0f/(1U<< 31))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_S32, int32_t,*(const int32_t *) pi *(1.0/(1U<< 31))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_FLT, float, av_clip_uint8(lrintf(*(const float *) pi *(1<< 7))+0x80)) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S16, int16_t, AV_SAMPLE_FMT_FLT, float, av_clip_int16(lrintf(*(const float *) pi *(1<< 15)))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_FLT, float, av_clipl_int32(llrintf(*(const float *) pi *(1U<< 31)))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_DBL, double, av_clip_uint8(lrint(*(const double *) pi *(1<< 7))+0x80)) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S16, int16_t, AV_SAMPLE_FMT_DBL, double, av_clip_int16(lrint(*(const double *) pi *(1<< 15)))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_DBL, double, av_clipl_int32(llrint(*(const double *) pi *(1U<< 31))))#define SET_CONV_FUNC_GROUP(ofmt, ifmt) static void set_generic_function(AudioConvert *ac){}void ff_audio_convert_free(AudioConvert **ac){if(!*ac) return;ff_dither_free(&(*ac) ->dc);av_freep(ac);}AudioConvert *ff_audio_convert_alloc(AVAudioResampleContext *avr, enum AVSampleFormat out_fmt, enum AVSampleFormat in_fmt, int channels, int sample_rate, int apply_map){AudioConvert *ac;int in_planar, out_planar;ac=av_mallocz(sizeof(*ac));if(!ac) return NULL;ac->avr=avr;ac->out_fmt=out_fmt;ac->in_fmt=in_fmt;ac->channels=channels;ac->apply_map=apply_map;if(avr->dither_method!=AV_RESAMPLE_DITHER_NONE &&av_get_packed_sample_fmt(out_fmt)==AV_SAMPLE_FMT_S16 &&av_get_bytes_per_sample(in_fmt) > 2){ac->dc=ff_dither_alloc(avr, out_fmt, in_fmt, channels, sample_rate, apply_map);if(!ac->dc){av_free(ac);return NULL;}return ac;}in_planar=ff_sample_fmt_is_planar(in_fmt, channels);out_planar=ff_sample_fmt_is_planar(out_fmt, channels);if(in_planar==out_planar){ac->func_type=CONV_FUNC_TYPE_FLAT;ac->planes=in_planar?ac->channels:1;}else if(in_planar) ac->func_type=CONV_FUNC_TYPE_INTERLEAVE;else ac->func_type=CONV_FUNC_TYPE_DEINTERLEAVE;set_generic_function(ac);if(ARCH_AARCH64) ff_audio_convert_init_aarch64(ac);if(ARCH_ARM) ff_audio_convert_init_arm(ac);if(ARCH_X86) ff_audio_convert_init_x86(ac);return ac;}int ff_audio_convert(AudioConvert *ac, AudioData *out, AudioData *in){int use_generic=1;int len=in->nb_samples;int p;if(ac->dc){av_log(ac->avr, AV_LOG_TRACE,"%d samples - audio_convert: %s to %s (dithered)\n", len, av_get_sample_fmt_name(ac->in_fmt), av_get_sample_fmt_name(ac->out_fmt));return ff_convert_dither(ac-> in
Chromaticity-derived non-constant luminance system.
Definition: pixfmt.h:526
#define AV_PIX_FMT_YUV420P10
Definition: pixfmt.h:399
static int process_command(AVFilterContext *ctx, const char *cmd, const char *args, char *res, int res_len, int flags)
Definition: vf_zscale.c:754
planar YUV 4:1:0, 9bpp, (1 Cr & Cb sample per 4x4 Y samples)
Definition: pixfmt.h:72
int colorspace
Definition: vf_zscale.c:91
Describe the class of an AVClass context structure.
Definition: log.h:67
Filter definition.
Definition: avfilter.h:145
static int convert_primaries(enum AVColorPrimaries color_primaries)
Definition: vf_zscale.c:419
Rational number (pair of numerator and denominator).
Definition: rational.h:58
"Logarithmic transfer characteristic (100 * Sqrt(10) : 1 range)"
Definition: pixfmt.h:494
const char * name
Filter name.
Definition: avfilter.h:149
static int convert_chroma_location(enum AVChromaLocation chroma_location)
Definition: vf_zscale.c:329
#define AV_PIX_FMT_YUV420P9
Definition: pixfmt.h:396
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 link
enum AVChromaLocation chroma_location
Definition: frame.h:565
#define snprintf
Definition: snprintf.h:34
static av_always_inline uint32_t av_float2int(float f)
Reinterpret a float as a 32-bit integer.
Definition: intfloat.h:50
misc parsing utilities
AVFilterLink ** outputs
array of pointers to output links
Definition: avfilter.h:353
int av_frame_get_buffer(AVFrame *frame, int align)
Allocate new buffer(s) for audio or video data.
Definition: frame.c:337
#define AV_PIX_FMT_YUV422P14
Definition: pixfmt.h:408
#define AV_PIX_FMT_GBRP12
Definition: pixfmt.h:416
size_t tmp_size
Definition: vf_zscale.c:116
#define flags(name, subs,...)
Definition: cbs_av1.c:560
#define AV_PIX_FMT_YUV422P10
Definition: pixfmt.h:400
#define AV_PIX_FMT_YUV444P12
Definition: pixfmt.h:406
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
Definition: frame.h:322
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
Narrow or limited range content.
Definition: pixfmt.h:569
static int config_props(AVFilterLink *outlink)
Definition: vf_zscale.c:196
ITU-R BT2020 constant luminance system.
Definition: pixfmt.h:524
#define AV_PIX_FMT_GBRPF32
Definition: pixfmt.h:428
int
static av_cold void uninit(AVFilterContext *ctx)
Definition: vf_zscale.c:744
planar YUV 4:2:0, 12bpp, (1 Cr & Cb sample per 2x2 Y samples)
Definition: pixfmt.h:66
#define AV_PIX_FMT_GBRAPF32
Definition: pixfmt.h:429
IEC 61966-2-1 (sRGB or sYCC)
Definition: pixfmt.h:497
planar GBRA 4:4:4:4 32bpp
Definition: pixfmt.h:215
#define AV_WN32(p, v)
Definition: intreadwrite.h:376
AVFilter ff_vf_zscale
Definition: vf_zscale.c:923
also ITU-R BT470BG
Definition: pixfmt.h:489
#define AV_PIX_FMT_YUVA444P9
Definition: pixfmt.h:435
planar YUV 4:4:4, 24bpp, full scale (JPEG), deprecated in favor of AV_PIX_FMT_YUV444P and setting col...
Definition: pixfmt.h:80
static const AVOption zscale_options[]
Definition: vf_zscale.c:782
planar YUV 4:1:1, 12bpp, (1 Cr & Cb sample per 4x1 Y samples)
Definition: pixfmt.h:73
int den
Denominator.
Definition: rational.h:60
int force_original_aspect_ratio
Definition: vf_zscale.c:113
ARIB STD-B67, known as "Hybrid log-gamma".
Definition: pixfmt.h:504
#define FLAGS
Definition: vf_zscale.c:779
planar YUV 4:1:1, 12bpp, (1 Cr & Cb sample per 4x1 Y samples) full scale (JPEG), deprecated in favor ...
Definition: pixfmt.h:258
int in_v_chr_pos
Definition: vf_zscale.c:111
enum AVColorPrimaries color_primaries
Definition: frame.h:554
An instance of a filter.
Definition: avfilter.h:341
ITU-R BT2020 for 10-bit system.
Definition: pixfmt.h:498
AVRational av_mul_q(AVRational b, AVRational c)
Multiply two rationals.
Definition: rational.c:80
also ITU-R BT601-6 525 / ITU-R BT1358 525 / ITU-R BT1700 NTSC
Definition: pixfmt.h:466
ITU-R BT2020.
Definition: pixfmt.h:469
int height
Definition: frame.h:366
FILE * out
Definition: movenc.c:54
#define av_freep(p)
planar YUV 4:4:0 (1 Cr & Cb sample per 1x2 Y samples)
Definition: pixfmt.h:99
AVChromaLocation
Location of chroma samples.
Definition: pixfmt.h:605
enum AVColorTransferCharacteristic color_trc
Definition: frame.h:556
MPEG-1 4:2:0, JPEG 4:2:0, H.263 4:2:0.
Definition: pixfmt.h:608
#define FFSWAP(type, a, b)
Definition: common.h:99
const char * av_get_pix_fmt_name(enum AVPixelFormat pix_fmt)
Return the short name for a pixel format, NULL in case pix_fmt is unknown.
Definition: pixdesc.c:2489
internal API functions
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
int depth
Number of bits in the component.
Definition: pixdesc.h:58
#define AVERROR_EXTERNAL
Generic error in an external library.
Definition: error.h:57
AVPixelFormat
Pixel format.
Definition: pixfmt.h:64
int av_opt_set(void *obj, const char *name, const char *val, int search_flags)
Definition: opt.c:465
enum AVColorTransferCharacteristic in_trc out_trc
Definition: vf_zscale.c:124
#define AV_PIX_FMT_YUV422P16
Definition: pixfmt.h:411
int av_frame_copy_props(AVFrame *dst, const AVFrame *src)
Copy only "metadata" fields from src to dst.
Definition: frame.c:671
int step
Number of elements between 2 horizontally consecutive pixels.
Definition: pixdesc.h:41
simple arithmetic expression evaluator
"Logarithmic transfer characteristic (100:1 range)"
Definition: pixfmt.h:493