FFmpeg
vf_rotate.c
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1 /*
2  * Copyright (c) 2013 Stefano Sabatini
3  * Copyright (c) 2008 Vitor Sessak
4  *
5  * This file is part of FFmpeg.
6  *
7  * FFmpeg is free software; you can redistribute it and/or
8  * modify it under the terms of the GNU Lesser General Public
9  * License as published by the Free Software Foundation; either
10  * version 2.1 of the License, or (at your option) any later version.
11  *
12  * FFmpeg is distributed in the hope that it will be useful,
13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15  * Lesser General Public License for more details.
16  *
17  * You should have received a copy of the GNU Lesser General Public
18  * License along with FFmpeg; if not, write to the Free Software
19  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20  */
21 
22 /**
23  * @file
24  * rotation filter, partially based on the tests/rotozoom.c program
25 */
26 
27 #include "libavutil/avstring.h"
28 #include "libavutil/eval.h"
29 #include "libavutil/opt.h"
30 #include "libavutil/intreadwrite.h"
31 #include "libavutil/parseutils.h"
32 #include "libavutil/pixdesc.h"
33 
34 #include "avfilter.h"
35 #include "drawutils.h"
36 #include "internal.h"
37 #include "video.h"
38 
39 #include <float.h>
40 
41 static const char * const var_names[] = {
42  "in_w" , "iw", ///< width of the input video
43  "in_h" , "ih", ///< height of the input video
44  "out_w", "ow", ///< width of the input video
45  "out_h", "oh", ///< height of the input video
46  "hsub", "vsub",
47  "n", ///< number of frame
48  "t", ///< timestamp expressed in seconds
49  NULL
50 };
51 
52 enum var_name {
61 };
62 
63 typedef struct RotContext {
64  const AVClass *class;
65  double angle;
66  char *angle_expr_str; ///< expression for the angle
67  AVExpr *angle_expr; ///< parsed expression for the angle
69  int outh, outw;
70  uint8_t fillcolor[4]; ///< color expressed either in YUVA or RGBA colorspace for the padding area
73  int hsub, vsub;
74  int nb_planes;
76  float sinx, cosx;
80  uint8_t *(*interpolate_bilinear)(uint8_t *dst_color,
81  const uint8_t *src, int src_linesize, int src_linestep,
82  int x, int y, int max_x, int max_y);
83 } RotContext;
84 
85 typedef struct ThreadData {
86  AVFrame *in, *out;
87  int inw, inh;
88  int outw, outh;
89  int plane;
90  int xi, yi;
91  int xprime, yprime;
92  int c, s;
93 } ThreadData;
94 
95 #define OFFSET(x) offsetof(RotContext, x)
96 #define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM
97 #define TFLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_RUNTIME_PARAM
98 
99 static const AVOption rotate_options[] = {
100  { "angle", "set angle (in radians)", OFFSET(angle_expr_str), AV_OPT_TYPE_STRING, {.str="0"}, 0, 0, .flags=TFLAGS },
101  { "a", "set angle (in radians)", OFFSET(angle_expr_str), AV_OPT_TYPE_STRING, {.str="0"}, 0, 0, .flags=TFLAGS },
102  { "out_w", "set output width expression", OFFSET(outw_expr_str), AV_OPT_TYPE_STRING, {.str="iw"}, 0, 0, .flags=FLAGS },
103  { "ow", "set output width expression", OFFSET(outw_expr_str), AV_OPT_TYPE_STRING, {.str="iw"}, 0, 0, .flags=FLAGS },
104  { "out_h", "set output height expression", OFFSET(outh_expr_str), AV_OPT_TYPE_STRING, {.str="ih"}, 0, 0, .flags=FLAGS },
105  { "oh", "set output height expression", OFFSET(outh_expr_str), AV_OPT_TYPE_STRING, {.str="ih"}, 0, 0, .flags=FLAGS },
106  { "fillcolor", "set background fill color", OFFSET(fillcolor_str), AV_OPT_TYPE_STRING, {.str="black"}, 0, 0, .flags=FLAGS },
107  { "c", "set background fill color", OFFSET(fillcolor_str), AV_OPT_TYPE_STRING, {.str="black"}, 0, 0, .flags=FLAGS },
108  { "bilinear", "use bilinear interpolation", OFFSET(use_bilinear), AV_OPT_TYPE_BOOL, {.i64=1}, 0, 1, .flags=FLAGS },
109  { NULL }
110 };
111 
113 
115 {
116  RotContext *rot = ctx->priv;
117 
118  if (!strcmp(rot->fillcolor_str, "none"))
119  rot->fillcolor_enable = 0;
120  else if (av_parse_color(rot->fillcolor, rot->fillcolor_str, -1, ctx) >= 0)
121  rot->fillcolor_enable = 1;
122  else
123  return AVERROR(EINVAL);
124  return 0;
125 }
126 
128 {
129  RotContext *rot = ctx->priv;
130 
131  av_expr_free(rot->angle_expr);
132  rot->angle_expr = NULL;
133 }
134 
136 {
137  static const enum AVPixelFormat pix_fmts[] = {
158  };
159 
161  if (!fmts_list)
162  return AVERROR(ENOMEM);
163  return ff_set_common_formats(ctx, fmts_list);
164 }
165 
166 static double get_rotated_w(void *opaque, double angle)
167 {
168  RotContext *rot = opaque;
169  double inw = rot->var_values[VAR_IN_W];
170  double inh = rot->var_values[VAR_IN_H];
171  float sinx = sin(angle);
172  float cosx = cos(angle);
173 
174  return FFMAX(0, inh * sinx) + FFMAX(0, -inw * cosx) +
175  FFMAX(0, inw * cosx) + FFMAX(0, -inh * sinx);
176 }
177 
178 static double get_rotated_h(void *opaque, double angle)
179 {
180  RotContext *rot = opaque;
181  double inw = rot->var_values[VAR_IN_W];
182  double inh = rot->var_values[VAR_IN_H];
183  float sinx = sin(angle);
184  float cosx = cos(angle);
185 
186  return FFMAX(0, -inh * cosx) + FFMAX(0, -inw * sinx) +
187  FFMAX(0, inh * cosx) + FFMAX(0, inw * sinx);
188 }
189 
190 static double (* const func1[])(void *, double) = {
193  NULL
194 };
195 
196 static const char * const func1_names[] = {
197  "rotw",
198  "roth",
199  NULL
200 };
201 
202 #define FIXP (1<<16)
203 #define FIXP2 (1<<20)
204 #define INT_PI 3294199 //(M_PI * FIXP2)
205 
206 /**
207  * Compute the sin of a using integer values.
208  * Input is scaled by FIXP2 and output values are scaled by FIXP.
209  */
210 static int64_t int_sin(int64_t a)
211 {
212  int64_t a2, res = 0;
213  int i;
214  if (a < 0) a = INT_PI-a; // 0..inf
215  a %= 2 * INT_PI; // 0..2PI
216 
217  if (a >= INT_PI*3/2) a -= 2*INT_PI; // -PI/2 .. 3PI/2
218  if (a >= INT_PI/2 ) a = INT_PI - a; // -PI/2 .. PI/2
219 
220  /* compute sin using Taylor series approximated to the fifth term */
221  a2 = (a*a)/(FIXP2);
222  for (i = 2; i < 11; i += 2) {
223  res += a;
224  a = -a*a2 / (FIXP2*i*(i+1));
225  }
226  return (res + 8)>>4;
227 }
228 
229 /**
230  * Interpolate the color in src at position x and y using bilinear
231  * interpolation.
232  */
233 static uint8_t *interpolate_bilinear8(uint8_t *dst_color,
234  const uint8_t *src, int src_linesize, int src_linestep,
235  int x, int y, int max_x, int max_y)
236 {
237  int int_x = av_clip(x>>16, 0, max_x);
238  int int_y = av_clip(y>>16, 0, max_y);
239  int frac_x = x&0xFFFF;
240  int frac_y = y&0xFFFF;
241  int i;
242  int int_x1 = FFMIN(int_x+1, max_x);
243  int int_y1 = FFMIN(int_y+1, max_y);
244 
245  for (i = 0; i < src_linestep; i++) {
246  int s00 = src[src_linestep * int_x + i + src_linesize * int_y ];
247  int s01 = src[src_linestep * int_x1 + i + src_linesize * int_y ];
248  int s10 = src[src_linestep * int_x + i + src_linesize * int_y1];
249  int s11 = src[src_linestep * int_x1 + i + src_linesize * int_y1];
250  int s0 = (((1<<16) - frac_x)*s00 + frac_x*s01);
251  int s1 = (((1<<16) - frac_x)*s10 + frac_x*s11);
252 
253  dst_color[i] = ((int64_t)((1<<16) - frac_y)*s0 + (int64_t)frac_y*s1) >> 32;
254  }
255 
256  return dst_color;
257 }
258 
259 /**
260  * Interpolate the color in src at position x and y using bilinear
261  * interpolation.
262  */
263 static uint8_t *interpolate_bilinear16(uint8_t *dst_color,
264  const uint8_t *src, int src_linesize, int src_linestep,
265  int x, int y, int max_x, int max_y)
266 {
267  int int_x = av_clip(x>>16, 0, max_x);
268  int int_y = av_clip(y>>16, 0, max_y);
269  int frac_x = x&0xFFFF;
270  int frac_y = y&0xFFFF;
271  int i;
272  int int_x1 = FFMIN(int_x+1, max_x);
273  int int_y1 = FFMIN(int_y+1, max_y);
274 
275  for (i = 0; i < src_linestep; i+=2) {
276  int s00 = AV_RL16(&src[src_linestep * int_x + i + src_linesize * int_y ]);
277  int s01 = AV_RL16(&src[src_linestep * int_x1 + i + src_linesize * int_y ]);
278  int s10 = AV_RL16(&src[src_linestep * int_x + i + src_linesize * int_y1]);
279  int s11 = AV_RL16(&src[src_linestep * int_x1 + i + src_linesize * int_y1]);
280  int s0 = (((1<<16) - frac_x)*s00 + frac_x*s01);
281  int s1 = (((1<<16) - frac_x)*s10 + frac_x*s11);
282 
283  AV_WL16(&dst_color[i], ((int64_t)((1<<16) - frac_y)*s0 + (int64_t)frac_y*s1) >> 32);
284  }
285 
286  return dst_color;
287 }
288 
289 static int config_props(AVFilterLink *outlink)
290 {
291  AVFilterContext *ctx = outlink->src;
292  RotContext *rot = ctx->priv;
293  AVFilterLink *inlink = ctx->inputs[0];
294  const AVPixFmtDescriptor *pixdesc = av_pix_fmt_desc_get(inlink->format);
295  int ret;
296  double res;
297  char *expr;
298 
299  ff_draw_init(&rot->draw, inlink->format, 0);
300  ff_draw_color(&rot->draw, &rot->color, rot->fillcolor);
301 
302  rot->hsub = pixdesc->log2_chroma_w;
303  rot->vsub = pixdesc->log2_chroma_h;
304 
305  if (pixdesc->comp[0].depth == 8)
307  else
309 
310  rot->var_values[VAR_IN_W] = rot->var_values[VAR_IW] = inlink->w;
311  rot->var_values[VAR_IN_H] = rot->var_values[VAR_IH] = inlink->h;
312  rot->var_values[VAR_HSUB] = 1<<rot->hsub;
313  rot->var_values[VAR_VSUB] = 1<<rot->vsub;
314  rot->var_values[VAR_N] = NAN;
315  rot->var_values[VAR_T] = NAN;
316  rot->var_values[VAR_OUT_W] = rot->var_values[VAR_OW] = NAN;
317  rot->var_values[VAR_OUT_H] = rot->var_values[VAR_OH] = NAN;
318 
319  av_expr_free(rot->angle_expr);
320  rot->angle_expr = NULL;
321  if ((ret = av_expr_parse(&rot->angle_expr, expr = rot->angle_expr_str, var_names,
322  func1_names, func1, NULL, NULL, 0, ctx)) < 0) {
324  "Error occurred parsing angle expression '%s'\n", rot->angle_expr_str);
325  return ret;
326  }
327 
328 #define SET_SIZE_EXPR(name, opt_name) do { \
329  ret = av_expr_parse_and_eval(&res, expr = rot->name##_expr_str, \
330  var_names, rot->var_values, \
331  func1_names, func1, NULL, NULL, rot, 0, ctx); \
332  if (ret < 0 || isnan(res) || isinf(res) || res <= 0) { \
333  av_log(ctx, AV_LOG_ERROR, \
334  "Error parsing or evaluating expression for option %s: " \
335  "invalid expression '%s' or non-positive or indefinite value %f\n", \
336  opt_name, expr, res); \
337  return ret; \
338  } \
339 } while (0)
340 
341  /* evaluate width and height */
342  av_expr_parse_and_eval(&res, expr = rot->outw_expr_str, var_names, rot->var_values,
343  func1_names, func1, NULL, NULL, rot, 0, ctx);
344  rot->var_values[VAR_OUT_W] = rot->var_values[VAR_OW] = res;
345  rot->outw = res + 0.5;
346  SET_SIZE_EXPR(outh, "out_h");
347  rot->var_values[VAR_OUT_H] = rot->var_values[VAR_OH] = res;
348  rot->outh = res + 0.5;
349 
350  /* evaluate the width again, as it may depend on the evaluated output height */
351  SET_SIZE_EXPR(outw, "out_w");
352  rot->var_values[VAR_OUT_W] = rot->var_values[VAR_OW] = res;
353  rot->outw = res + 0.5;
354 
355  /* compute number of planes */
356  rot->nb_planes = av_pix_fmt_count_planes(inlink->format);
357  outlink->w = rot->outw;
358  outlink->h = rot->outh;
359  return 0;
360 }
361 
362 static av_always_inline void copy_elem(uint8_t *pout, const uint8_t *pin, int elem_size)
363 {
364  int v;
365  switch (elem_size) {
366  case 1:
367  *pout = *pin;
368  break;
369  case 2:
370  *((uint16_t *)pout) = *((uint16_t *)pin);
371  break;
372  case 3:
373  v = AV_RB24(pin);
374  AV_WB24(pout, v);
375  break;
376  case 4:
377  *((uint32_t *)pout) = *((uint32_t *)pin);
378  break;
379  default:
380  memcpy(pout, pin, elem_size);
381  break;
382  }
383 }
384 
385 static av_always_inline void simple_rotate_internal(uint8_t *dst, const uint8_t *src, int src_linesize, int angle, int elem_size, int len)
386 {
387  int i;
388  switch(angle) {
389  case 0:
390  memcpy(dst, src, elem_size * len);
391  break;
392  case 1:
393  for (i = 0; i<len; i++)
394  copy_elem(dst + i*elem_size, src + (len-i-1)*src_linesize, elem_size);
395  break;
396  case 2:
397  for (i = 0; i<len; i++)
398  copy_elem(dst + i*elem_size, src + (len-i-1)*elem_size, elem_size);
399  break;
400  case 3:
401  for (i = 0; i<len; i++)
402  copy_elem(dst + i*elem_size, src + i*src_linesize, elem_size);
403  break;
404  }
405 }
406 
407 static av_always_inline void simple_rotate(uint8_t *dst, const uint8_t *src, int src_linesize, int angle, int elem_size, int len)
408 {
409  switch(elem_size) {
410  case 1 : simple_rotate_internal(dst, src, src_linesize, angle, 1, len); break;
411  case 2 : simple_rotate_internal(dst, src, src_linesize, angle, 2, len); break;
412  case 3 : simple_rotate_internal(dst, src, src_linesize, angle, 3, len); break;
413  case 4 : simple_rotate_internal(dst, src, src_linesize, angle, 4, len); break;
414  default: simple_rotate_internal(dst, src, src_linesize, angle, elem_size, len); break;
415  }
416 }
417 
418 static int filter_slice(AVFilterContext *ctx, void *arg, int job, int nb_jobs)
419 {
420  ThreadData *td = arg;
421  AVFrame *in = td->in;
422  AVFrame *out = td->out;
423  RotContext *rot = ctx->priv;
424  const int outw = td->outw, outh = td->outh;
425  const int inw = td->inw, inh = td->inh;
426  const int plane = td->plane;
427  const int xi = td->xi, yi = td->yi;
428  const int c = td->c, s = td->s;
429  const int start = (outh * job ) / nb_jobs;
430  const int end = (outh * (job+1)) / nb_jobs;
431  int xprime = td->xprime + start * s;
432  int yprime = td->yprime + start * c;
433  int i, j, x, y;
434 
435  for (j = start; j < end; j++) {
436  x = xprime + xi + FIXP*(inw-1)/2;
437  y = yprime + yi + FIXP*(inh-1)/2;
438 
439  if (fabs(rot->angle - 0) < FLT_EPSILON && outw == inw && outh == inh) {
440  simple_rotate(out->data[plane] + j * out->linesize[plane],
441  in->data[plane] + j * in->linesize[plane],
442  in->linesize[plane], 0, rot->draw.pixelstep[plane], outw);
443  } else if (fabs(rot->angle - M_PI/2) < FLT_EPSILON && outw == inh && outh == inw) {
444  simple_rotate(out->data[plane] + j * out->linesize[plane],
445  in->data[plane] + j * rot->draw.pixelstep[plane],
446  in->linesize[plane], 1, rot->draw.pixelstep[plane], outw);
447  } else if (fabs(rot->angle - M_PI) < FLT_EPSILON && outw == inw && outh == inh) {
448  simple_rotate(out->data[plane] + j * out->linesize[plane],
449  in->data[plane] + (outh-j-1) * in->linesize[plane],
450  in->linesize[plane], 2, rot->draw.pixelstep[plane], outw);
451  } else if (fabs(rot->angle - 3*M_PI/2) < FLT_EPSILON && outw == inh && outh == inw) {
452  simple_rotate(out->data[plane] + j * out->linesize[plane],
453  in->data[plane] + (outh-j-1) * rot->draw.pixelstep[plane],
454  in->linesize[plane], 3, rot->draw.pixelstep[plane], outw);
455  } else {
456 
457  for (i = 0; i < outw; i++) {
458  int32_t v;
459  int x1, y1;
460  uint8_t *pin, *pout;
461  x1 = x>>16;
462  y1 = y>>16;
463 
464  /* the out-of-range values avoid border artifacts */
465  if (x1 >= -1 && x1 <= inw && y1 >= -1 && y1 <= inh) {
466  uint8_t inp_inv[4]; /* interpolated input value */
467  pout = out->data[plane] + j * out->linesize[plane] + i * rot->draw.pixelstep[plane];
468  if (rot->use_bilinear) {
469  pin = rot->interpolate_bilinear(inp_inv,
470  in->data[plane], in->linesize[plane], rot->draw.pixelstep[plane],
471  x, y, inw-1, inh-1);
472  } else {
473  int x2 = av_clip(x1, 0, inw-1);
474  int y2 = av_clip(y1, 0, inh-1);
475  pin = in->data[plane] + y2 * in->linesize[plane] + x2 * rot->draw.pixelstep[plane];
476  }
477  switch (rot->draw.pixelstep[plane]) {
478  case 1:
479  *pout = *pin;
480  break;
481  case 2:
482  v = AV_RL16(pin);
483  AV_WL16(pout, v);
484  break;
485  case 3:
486  v = AV_RB24(pin);
487  AV_WB24(pout, v);
488  break;
489  case 4:
490  *((uint32_t *)pout) = *((uint32_t *)pin);
491  break;
492  default:
493  memcpy(pout, pin, rot->draw.pixelstep[plane]);
494  break;
495  }
496  }
497  x += c;
498  y -= s;
499  }
500  }
501  xprime += s;
502  yprime += c;
503  }
504 
505  return 0;
506 }
507 
509 {
510  AVFilterContext *ctx = inlink->dst;
511  AVFilterLink *outlink = ctx->outputs[0];
512  AVFrame *out;
513  RotContext *rot = ctx->priv;
514  int angle_int, s, c, plane;
515  double res;
516 
517  out = ff_get_video_buffer(outlink, outlink->w, outlink->h);
518  if (!out) {
519  av_frame_free(&in);
520  return AVERROR(ENOMEM);
521  }
523 
524  rot->var_values[VAR_N] = inlink->frame_count_out;
525  rot->var_values[VAR_T] = TS2T(in->pts, inlink->time_base);
526  rot->angle = res = av_expr_eval(rot->angle_expr, rot->var_values, rot);
527 
528  av_log(ctx, AV_LOG_DEBUG, "n:%f time:%f angle:%f/PI\n",
529  rot->var_values[VAR_N], rot->var_values[VAR_T], rot->angle/M_PI);
530 
531  angle_int = res * FIXP * 16;
532  s = int_sin(angle_int);
533  c = int_sin(angle_int + INT_PI/2);
534 
535  /* fill background */
536  if (rot->fillcolor_enable)
537  ff_fill_rectangle(&rot->draw, &rot->color, out->data, out->linesize,
538  0, 0, outlink->w, outlink->h);
539 
540  for (plane = 0; plane < rot->nb_planes; plane++) {
541  int hsub = plane == 1 || plane == 2 ? rot->hsub : 0;
542  int vsub = plane == 1 || plane == 2 ? rot->vsub : 0;
543  const int outw = AV_CEIL_RSHIFT(outlink->w, hsub);
544  const int outh = AV_CEIL_RSHIFT(outlink->h, vsub);
545  ThreadData td = { .in = in, .out = out,
546  .inw = AV_CEIL_RSHIFT(inlink->w, hsub),
547  .inh = AV_CEIL_RSHIFT(inlink->h, vsub),
548  .outh = outh, .outw = outw,
549  .xi = -(outw-1) * c / 2, .yi = (outw-1) * s / 2,
550  .xprime = -(outh-1) * s / 2,
551  .yprime = -(outh-1) * c / 2,
552  .plane = plane, .c = c, .s = s };
553 
554 
556  }
557 
558  av_frame_free(&in);
559  return ff_filter_frame(outlink, out);
560 }
561 
562 static int process_command(AVFilterContext *ctx, const char *cmd, const char *args,
563  char *res, int res_len, int flags)
564 {
565  RotContext *rot = ctx->priv;
566  int ret;
567 
568  if (!strcmp(cmd, "angle") || !strcmp(cmd, "a")) {
569  AVExpr *old = rot->angle_expr;
570  ret = av_expr_parse(&rot->angle_expr, args, var_names,
571  NULL, NULL, NULL, NULL, 0, ctx);
572  if (ret < 0) {
574  "Error when parsing the expression '%s' for angle command\n", args);
575  rot->angle_expr = old;
576  return ret;
577  }
578  av_expr_free(old);
579  } else
580  ret = AVERROR(ENOSYS);
581 
582  return ret;
583 }
584 
585 static const AVFilterPad rotate_inputs[] = {
586  {
587  .name = "default",
588  .type = AVMEDIA_TYPE_VIDEO,
589  .filter_frame = filter_frame,
590  },
591  { NULL }
592 };
593 
594 static const AVFilterPad rotate_outputs[] = {
595  {
596  .name = "default",
597  .type = AVMEDIA_TYPE_VIDEO,
598  .config_props = config_props,
599  },
600  { NULL }
601 };
602 
604  .name = "rotate",
605  .description = NULL_IF_CONFIG_SMALL("Rotate the input image."),
606  .priv_size = sizeof(RotContext),
607  .init = init,
608  .uninit = uninit,
613  .priv_class = &rotate_class,
615 };
RotContext::hsub
int hsub
Definition: vf_rotate.c:73
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:97
int_sin
static int64_t int_sin(int64_t a)
Compute the sin of a using integer values.
Definition: vf_rotate.c:210
AV_PIX_FMT_YUV420P9LE
@ AV_PIX_FMT_YUV420P9LE
planar YUV 4:2:0, 13.5bpp, (1 Cr & Cb sample per 2x2 Y samples), little-endian
Definition: pixfmt.h:147
td
#define td
Definition: regdef.h:70
FFDrawColor
Definition: drawutils.h:49
AVPixelFormat
AVPixelFormat
Pixel format.
Definition: pixfmt.h:64
av_clip
#define av_clip
Definition: common.h:96
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:286
out
FILE * out
Definition: movenc.c:54
VAR_N
@ VAR_N
Definition: vf_rotate.c:58
FIXP2
#define FIXP2
Definition: vf_rotate.c:203
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:2540
av_parse_color
int av_parse_color(uint8_t *rgba_color, const char *color_string, int slen, void *log_ctx)
Put the RGBA values that correspond to color_string in rgba_color.
Definition: parseutils.c:354
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_frame_free
void av_frame_free(AVFrame **frame)
Free the frame and any dynamically allocated objects in it, e.g.
Definition: frame.c:112
AVFrame
This structure describes decoded (raw) audio or video data.
Definition: frame.h:303
pixdesc.h
AVFrame::pts
int64_t pts
Presentation timestamp in time_base units (time when frame should be shown to user).
Definition: frame.h:396
AVComponentDescriptor::depth
int depth
Number of bits in the component.
Definition: pixdesc.h:57
AVOption
AVOption.
Definition: opt.h:247
VAR_T
@ VAR_T
Definition: vf_rotate.c:59
RotContext
Definition: vf_rotate.c:63
AV_PIX_FMT_YUV420P16LE
@ AV_PIX_FMT_YUV420P16LE
planar YUV 4:2:0, 24bpp, (1 Cr & Cb sample per 2x2 Y samples), little-endian
Definition: pixfmt.h:121
float.h
filter_slice
static int filter_slice(AVFilterContext *ctx, void *arg, int job, int nb_jobs)
Definition: vf_rotate.c:418
RotContext::fillcolor
uint8_t fillcolor[4]
color expressed either in YUVA or RGBA colorspace for the padding area
Definition: vf_rotate.c:70
AV_PIX_FMT_BGR24
@ AV_PIX_FMT_BGR24
packed RGB 8:8:8, 24bpp, BGRBGR...
Definition: pixfmt.h:69
AV_PIX_FMT_BGRA
@ AV_PIX_FMT_BGRA
packed BGRA 8:8:8:8, 32bpp, BGRABGRA...
Definition: pixfmt.h:95
FFMAX
#define FFMAX(a, b)
Definition: macros.h:47
VAR_IW
@ VAR_IW
Definition: vf_rotate.c:53
AVFilter::name
const char * name
Filter name.
Definition: avfilter.h:149
ThreadData::out
AVFrame * out
Definition: af_adeclick.c:502
RotContext::color
FFDrawColor color
Definition: vf_rotate.c:79
VAR_OW
@ VAR_OW
Definition: vf_rotate.c:55
FIXP
#define FIXP
Definition: vf_rotate.c:202
video.h
interpolate_bilinear16
static uint8_t * interpolate_bilinear16(uint8_t *dst_color, const uint8_t *src, int src_linesize, int src_linestep, int x, int y, int max_x, int max_y)
Interpolate the color in src at position x and y using bilinear interpolation.
Definition: vf_rotate.c:263
AVFormatContext::internal
AVFormatInternal * internal
An opaque field for libavformat internal usage.
Definition: avformat.h:1565
process_command
static int process_command(AVFilterContext *ctx, const char *cmd, const char *args, char *res, int res_len, int flags)
Definition: vf_rotate.c:562
AVFrame::data
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
Definition: frame.h:317
FFDrawContext::pixelstep
int pixelstep[MAX_PLANES]
Definition: drawutils.h:39
get_rotated_h
static double get_rotated_h(void *opaque, double angle)
Definition: vf_rotate.c:178
AV_PIX_FMT_YUV444P16LE
@ AV_PIX_FMT_YUV444P16LE
planar YUV 4:4:4, 48bpp, (1 Cr & Cb sample per 1x1 Y samples), little-endian
Definition: pixfmt.h:125
hsub
static void hsub(htype *dst, const htype *src, int bins)
Definition: vf_median.c:74
AVFilterFormats
A list of supported formats for one end of a filter link.
Definition: formats.h:64
av_expr_parse
int av_expr_parse(AVExpr **expr, const char *s, const char *const *const_names, const char *const *func1_names, double(*const *funcs1)(void *, double), const char *const *func2_names, double(*const *funcs2)(void *, double, double), int log_offset, void *log_ctx)
Parse an expression.
Definition: eval.c:685
ff_vf_rotate
const AVFilter ff_vf_rotate
Definition: vf_rotate.c:603
av_pix_fmt_count_planes
int av_pix_fmt_count_planes(enum AVPixelFormat pix_fmt)
Definition: pixdesc.c:2580
AVFILTER_DEFINE_CLASS
AVFILTER_DEFINE_CLASS(rotate)
simple_rotate_internal
static av_always_inline void simple_rotate_internal(uint8_t *dst, const uint8_t *src, int src_linesize, int angle, int elem_size, int len)
Definition: vf_rotate.c:385
RotContext::angle_expr
AVExpr * angle_expr
parsed expression for the angle
Definition: vf_rotate.c:67
AV_PIX_FMT_GBRAP
@ AV_PIX_FMT_GBRAP
planar GBRA 4:4:4:4 32bpp
Definition: pixfmt.h:205
AV_PIX_FMT_YUV420P12LE
@ AV_PIX_FMT_YUV420P12LE
planar YUV 4:2:0,18bpp, (1 Cr & Cb sample per 2x2 Y samples), little-endian
Definition: pixfmt.h:233
RotContext::nb_planes
int nb_planes
Definition: vf_rotate.c:74
RotContext::angle
double angle
Definition: vf_rotate.c:65
func1_names
static const char *const func1_names[]
Definition: vf_rotate.c:196
av_expr_free
void av_expr_free(AVExpr *e)
Free a parsed expression previously created with av_expr_parse().
Definition: eval.c:336
AVFilterPad
A filter pad used for either input or output.
Definition: internal.h:54
AV_PIX_FMT_YUV420P10LE
@ AV_PIX_FMT_YUV420P10LE
planar YUV 4:2:0, 15bpp, (1 Cr & Cb sample per 2x2 Y samples), little-endian
Definition: pixfmt.h:149
rotate
static void rotate(const float rot_quaternion[2][4], float *vec)
Rotate vector with given rotation quaternion.
Definition: vf_v360.c:4068
AV_PIX_FMT_YUV444P12LE
@ AV_PIX_FMT_YUV444P12LE
planar YUV 4:4:4,36bpp, (1 Cr & Cb sample per 1x1 Y samples), little-endian
Definition: pixfmt.h:241
ThreadData::xi
int xi
Definition: vf_rotate.c:90
TS2T
#define TS2T(ts, tb)
Definition: internal.h:209
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
inputs
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
Definition: filter_design.txt:243
ff_set_common_formats
int ff_set_common_formats(AVFilterContext *ctx, AVFilterFormats *formats)
A helper for query_formats() which sets all links to the same list of formats.
Definition: formats.c:580
ThreadData::plane
int plane
Definition: vf_blend.c:58
intreadwrite.h
s
#define s(width, name)
Definition: cbs_vp9.c:257
AV_PIX_FMT_YUVA420P
@ AV_PIX_FMT_YUVA420P
planar YUV 4:2:0, 20bpp, (1 Cr & Cb sample per 2x2 Y & A samples)
Definition: pixfmt.h:101
VAR_IN_H
@ VAR_IN_H
Definition: vf_rotate.c:54
AV_CEIL_RSHIFT
#define AV_CEIL_RSHIFT(a, b)
Definition: common.h:51
RotContext::interpolate_bilinear
uint8_t *(* interpolate_bilinear)(uint8_t *dst_color, const uint8_t *src, int src_linesize, int src_linestep, int x, int y, int max_x, int max_y)
Definition: vf_rotate.c:80
ThreadData::yi
int yi
Definition: vf_rotate.c:90
VAR_IN_W
@ VAR_IN_W
Definition: vf_rotate.c:53
s1
#define s1
Definition: regdef.h:38
outputs
static const AVFilterPad outputs[]
Definition: af_acontrast.c:203
pix_fmts
static enum AVPixelFormat pix_fmts[]
Definition: libkvazaar.c:290
var_name
var_name
Definition: noise_bsf.c:47
AV_LOG_DEBUG
#define AV_LOG_DEBUG
Stuff which is only useful for libav* developers.
Definition: log.h:201
ctx
AVFormatContext * ctx
Definition: movenc.c:48
AV_RL16
uint64_t_TMPL AV_WL64 unsigned int_TMPL AV_WL32 unsigned int_TMPL AV_WL24 unsigned int_TMPL AV_RL16
Definition: bytestream.h:94
xi
#define xi(width, name, var, range_min, range_max, subs,...)
Definition: cbs_h2645.c:404
av_expr_eval
double av_expr_eval(AVExpr *e, const double *const_values, void *opaque)
Evaluate a previously parsed expression.
Definition: eval.c:766
AVExpr
Definition: eval.c:157
RotContext::outw
int outw
Definition: vf_rotate.c:69
ff_draw_init
int ff_draw_init(FFDrawContext *draw, enum AVPixelFormat format, unsigned flags)
Init a draw context.
Definition: drawutils.c:82
AVPixFmtDescriptor::log2_chroma_w
uint8_t log2_chroma_w
Amount to shift the luma width right to find the chroma width.
Definition: pixdesc.h:80
AV_PIX_FMT_YUV420P
@ AV_PIX_FMT_YUV420P
planar YUV 4:2:0, 12bpp, (1 Cr & Cb sample per 2x2 Y samples)
Definition: pixfmt.h:66
NAN
#define NAN
Definition: mathematics.h:64
filter_frame
static int filter_frame(AVFilterLink *inlink, AVFrame *in)
Definition: vf_rotate.c:508
AV_PIX_FMT_YUVJ444P
@ AV_PIX_FMT_YUVJ444P
planar YUV 4:4:4, 24bpp, full scale (JPEG), deprecated in favor of AV_PIX_FMT_YUV444P and setting col...
Definition: pixfmt.h:80
AV_PIX_FMT_RGBA
@ AV_PIX_FMT_RGBA
packed RGBA 8:8:8:8, 32bpp, RGBARGBA...
Definition: pixfmt.h:93
AV_PIX_FMT_YUV444P10LE
@ AV_PIX_FMT_YUV444P10LE
planar YUV 4:4:4, 30bpp, (1 Cr & Cb sample per 1x1 Y samples), little-endian
Definition: pixfmt.h:155
arg
const char * arg
Definition: jacosubdec.c:67
RotContext::use_bilinear
int use_bilinear
Definition: vf_rotate.c:75
AVClass
Describe the class of an AVClass context structure.
Definition: log.h:66
fabs
static __device__ float fabs(float a)
Definition: cuda_runtime.h:182
NULL
#define NULL
Definition: coverity.c:32
av_frame_copy_props
int av_frame_copy_props(AVFrame *dst, const AVFrame *src)
Copy only "metadata" fields from src to dst.
Definition: frame.c:537
init
static av_cold int init(AVFilterContext *ctx)
Definition: vf_rotate.c:114
AV_PIX_FMT_YUVJ420P
@ AV_PIX_FMT_YUVJ420P
planar YUV 4:2:0, 12bpp, full scale (JPEG), deprecated in favor of AV_PIX_FMT_YUV420P and setting col...
Definition: pixfmt.h:78
src
#define src
Definition: vp8dsp.c:255
parseutils.h
AV_PIX_FMT_YUVA444P9LE
@ AV_PIX_FMT_YUVA444P9LE
planar YUV 4:4:4 36bpp, (1 Cr & Cb sample per 1x1 Y & A samples), little-endian
Definition: pixfmt.h:173
AV_PIX_FMT_YUVA420P16LE
@ AV_PIX_FMT_YUVA420P16LE
planar YUV 4:2:0 40bpp, (1 Cr & Cb sample per 2x2 Y & A samples, little-endian)
Definition: pixfmt.h:181
AV_PIX_FMT_BGR0
@ AV_PIX_FMT_BGR0
packed BGR 8:8:8, 32bpp, BGRXBGRX... X=unused/undefined
Definition: pixfmt.h:230
ThreadData::c
int c
Definition: vf_rotate.c:92
AV_PIX_FMT_GRAY8
@ AV_PIX_FMT_GRAY8
Y , 8bpp.
Definition: pixfmt.h:74
AV_PIX_FMT_YUVA420P9LE
@ AV_PIX_FMT_YUVA420P9LE
planar YUV 4:2:0 22.5bpp, (1 Cr & Cb sample per 2x2 Y & A samples), little-endian
Definition: pixfmt.h:169
AV_PIX_FMT_ABGR
@ AV_PIX_FMT_ABGR
packed ABGR 8:8:8:8, 32bpp, ABGRABGR...
Definition: pixfmt.h:94
RotContext::vsub
int vsub
Definition: vf_rotate.c:73
c
Undefined Behavior In the C some operations are like signed integer dereferencing freed accessing outside allocated Undefined Behavior must not occur in a C it is not safe even if the output of undefined operations is unused The unsafety may seem nit picking but Optimizing compilers have in fact optimized code on the assumption that no undefined Behavior occurs Optimizing code based on wrong assumptions can and has in some cases lead to effects beyond the output of computations The signed integer overflow problem in speed critical code Code which is highly optimized and works with signed integers sometimes has the problem that often the output of the computation does not c
Definition: undefined.txt:32
eval.h
AV_PIX_FMT_RGB24
@ AV_PIX_FMT_RGB24
packed RGB 8:8:8, 24bpp, RGBRGB...
Definition: pixfmt.h:68
simple_rotate
static av_always_inline void simple_rotate(uint8_t *dst, const uint8_t *src, int src_linesize, int angle, int elem_size, int len)
Definition: vf_rotate.c:407
OFFSET
#define OFFSET(x)
Definition: vf_rotate.c:95
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:116
av_expr_parse_and_eval
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
VAR_VARS_NB
@ VAR_VARS_NB
Definition: vf_rotate.c:60
VAR_IH
@ VAR_IH
Definition: vf_rotate.c:54
VAR_OUT_W
@ VAR_OUT_W
Definition: vf_rotate.c:55
VAR_OH
@ VAR_OH
Definition: vf_rotate.c:56
ff_fill_rectangle
void ff_fill_rectangle(FFDrawContext *draw, FFDrawColor *color, uint8_t *dst[], int dst_linesize[], int dst_x, int dst_y, int w, int h)
Fill a rectangle with an uniform color.
Definition: drawutils.c:222
AV_WB24
#define AV_WB24(p, d)
Definition: intreadwrite.h:450
AV_WL16
#define AV_WL16(p, v)
Definition: intreadwrite.h:412
ThreadData::yprime
int yprime
Definition: vf_rotate.c:91
a
The reader does not expect b to be semantically here and if the code is changed by maybe adding a a division or other the signedness will almost certainly be mistaken To avoid this confusion a new type was SUINT is the C unsigned type but it holds a signed int to use the same example SUINT a
Definition: undefined.txt:41
rotate_inputs
static const AVFilterPad rotate_inputs[]
Definition: vf_rotate.c:585
AV_PIX_FMT_YUVA444P
@ AV_PIX_FMT_YUVA444P
planar YUV 4:4:4 32bpp, (1 Cr & Cb sample per 1x1 Y & A samples)
Definition: pixfmt.h:167
AV_PIX_FMT_RGB0
@ AV_PIX_FMT_RGB0
packed RGB 8:8:8, 32bpp, RGBXRGBX... X=unused/undefined
Definition: pixfmt.h:228
AV_PIX_FMT_YUVA420P10LE
@ AV_PIX_FMT_YUVA420P10LE
planar YUV 4:2:0 25bpp, (1 Cr & Cb sample per 2x2 Y & A samples, little-endian)
Definition: pixfmt.h:175
rotate_outputs
static const AVFilterPad rotate_outputs[]
Definition: vf_rotate.c:594
M_PI
#define M_PI
Definition: mathematics.h:52
RotContext::outh_expr_str
char * outh_expr_str
Definition: vf_rotate.c:68
internal.h
AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC
#define AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC
Some filters support a generic "enable" expression option that can be used to enable or disable a fil...
Definition: avfilter.h:126
AV_PIX_FMT_ARGB
@ AV_PIX_FMT_ARGB
packed ARGB 8:8:8:8, 32bpp, ARGBARGB...
Definition: pixfmt.h:92
SET_SIZE_EXPR
#define SET_SIZE_EXPR(name, opt_name)
rotate_options
static const AVOption rotate_options[]
Definition: vf_rotate.c:99
ThreadData::s
int s
Definition: vf_rotate.c:92
i
int i
Definition: input.c:406
uninit
static av_cold void uninit(AVFilterContext *ctx)
Definition: vf_rotate.c:127
func1
static double(*const func1[])(void *, double)
Definition: vf_rotate.c:190
get_rotated_w
static double get_rotated_w(void *opaque, double angle)
Definition: vf_rotate.c:166
query_formats
static int query_formats(AVFilterContext *ctx)
Definition: vf_rotate.c:135
a2
#define a2
Definition: regdef.h:48
ff_filter_get_nb_threads
int ff_filter_get_nb_threads(AVFilterContext *ctx)
Get number of threads for current filter instance.
Definition: avfilter.c:762
ThreadData
Used for passing data between threads.
Definition: dsddec.c:67
av_always_inline
#define av_always_inline
Definition: attributes.h:49
FFMIN
#define FFMIN(a, b)
Definition: macros.h:49
FFDrawContext
Definition: drawutils.h:35
ThreadData::xprime
int xprime
Definition: vf_rotate.c:91
len
int len
Definition: vorbis_enc_data.h:426
AVFilterPad::name
const char * name
Pad name.
Definition: internal.h:60
ff_draw_color
void ff_draw_color(FFDrawContext *draw, FFDrawColor *color, const uint8_t rgba[4])
Prepare a color.
Definition: drawutils.c:135
AVFilter
Filter definition.
Definition: avfilter.h:145
ret
ret
Definition: filter_design.txt:187
RotContext::fillcolor_str
char * fillcolor_str
Definition: vf_rotate.c:71
INT_PI
#define INT_PI
Definition: vf_rotate.c:204
AV_PIX_FMT_0BGR
@ AV_PIX_FMT_0BGR
packed BGR 8:8:8, 32bpp, XBGRXBGR... X=unused/undefined
Definition: pixfmt.h:229
RotContext::cosx
float cosx
Definition: vf_rotate.c:76
RotContext::draw
FFDrawContext draw
Definition: vf_rotate.c:78
FLAGS
#define FLAGS
Definition: vf_rotate.c:96
ThreadData::outh
int outh
Definition: vf_rotate.c:88
config_props
static int config_props(AVFilterLink *outlink)
Definition: vf_rotate.c:289
ThreadData::outw
int outw
Definition: vf_rotate.c:88
RotContext::fillcolor_enable
int fillcolor_enable
Definition: vf_rotate.c:72
AV_PIX_FMT_NONE
@ AV_PIX_FMT_NONE
Definition: pixfmt.h:65
RotContext::var_values
double var_values[VAR_VARS_NB]
Definition: vf_rotate.c:77
avfilter.h
AV_PIX_FMT_YUV444P9LE
@ AV_PIX_FMT_YUV444P9LE
planar YUV 4:4:4, 27bpp, (1 Cr & Cb sample per 1x1 Y samples), little-endian
Definition: pixfmt.h:153
AVPixFmtDescriptor::comp
AVComponentDescriptor comp[4]
Parameters that describe how pixels are packed.
Definition: pixdesc.h:105
RotContext::angle_expr_str
char * angle_expr_str
expression for the angle
Definition: vf_rotate.c:66
VAR_VSUB
@ VAR_VSUB
Definition: vf_rotate.c:57
AV_PIX_FMT_YUV444P
@ AV_PIX_FMT_YUV444P
planar YUV 4:4:4, 24bpp, (1 Cr & Cb sample per 1x1 Y samples)
Definition: pixfmt.h:71
AVFilterContext
An instance of a filter.
Definition: avfilter.h:333
AV_PIX_FMT_GBRP
@ AV_PIX_FMT_GBRP
planar GBR 4:4:4 24bpp
Definition: pixfmt.h:158
AVFILTER_FLAG_SLICE_THREADS
#define AVFILTER_FLAG_SLICE_THREADS
The filter supports multithreading by splitting frames into multiple parts and processing them concur...
Definition: avfilter.h:117
AVMEDIA_TYPE_VIDEO
@ AVMEDIA_TYPE_VIDEO
Definition: avutil.h:201
RotContext::outh
int outh
Definition: vf_rotate.c:69
var_names
static const char *const var_names[]
Definition: vf_rotate.c:41
s0
#define s0
Definition: regdef.h:37
ThreadData::in
AVFrame * in
Definition: af_adenorm.c:223
AV_PIX_FMT_YUVA444P10LE
@ AV_PIX_FMT_YUVA444P10LE
planar YUV 4:4:4 40bpp, (1 Cr & Cb sample per 1x1 Y & A samples, little-endian)
Definition: pixfmt.h:179
AVPixFmtDescriptor
Descriptor that unambiguously describes how the bits of a pixel are stored in the up to 4 data planes...
Definition: pixdesc.h:69
TFLAGS
#define TFLAGS
Definition: vf_rotate.c:97
AV_OPT_TYPE_BOOL
@ AV_OPT_TYPE_BOOL
Definition: opt.h:241
ThreadData::inh
int inh
Definition: vf_rotate.c:87
RotContext::outw_expr_str
char * outw_expr_str
Definition: vf_rotate.c:68
int32_t
int32_t
Definition: audioconvert.c:56
flags
#define flags(name, subs,...)
Definition: cbs_av1.c:561
AVFrame::linesize
int linesize[AV_NUM_DATA_POINTERS]
For video, size in bytes of each picture line.
Definition: frame.h:334
AV_PIX_FMT_0RGB
@ AV_PIX_FMT_0RGB
packed RGB 8:8:8, 32bpp, XRGBXRGB... X=unused/undefined
Definition: pixfmt.h:227
AV_PIX_FMT_YUV410P
@ AV_PIX_FMT_YUV410P
planar YUV 4:1:0, 9bpp, (1 Cr & Cb sample per 4x4 Y samples)
Definition: pixfmt.h:72
av_log
#define av_log(a,...)
Definition: tableprint_vlc.h:28
VAR_OUT_H
@ VAR_OUT_H
Definition: vf_rotate.c:56
interpolate_bilinear8
static uint8_t * interpolate_bilinear8(uint8_t *dst_color, const uint8_t *src, int src_linesize, int src_linestep, int x, int y, int max_x, int max_y)
Interpolate the color in src at position x and y using bilinear interpolation.
Definition: vf_rotate.c:233
avstring.h
AV_PIX_FMT_YUVA444P16LE
@ AV_PIX_FMT_YUVA444P16LE
planar YUV 4:4:4 64bpp, (1 Cr & Cb sample per 1x1 Y & A samples, little-endian)
Definition: pixfmt.h:185
AV_OPT_TYPE_STRING
@ AV_OPT_TYPE_STRING
Definition: opt.h:228
drawutils.h
AV_RB24
uint64_t_TMPL AV_WL64 unsigned int_TMPL AV_WL32 unsigned int_TMPL AV_WL24 unsigned int_TMPL AV_WL16 uint64_t_TMPL AV_WB64 unsigned int_TMPL AV_WB32 unsigned int_TMPL AV_RB24
Definition: bytestream.h:97
RotContext::sinx
float sinx
Definition: vf_rotate.c:76
copy_elem
static av_always_inline void copy_elem(uint8_t *pout, const uint8_t *pin, int elem_size)
Definition: vf_rotate.c:362
AVPixFmtDescriptor::log2_chroma_h
uint8_t log2_chroma_h
Amount to shift the luma height right to find the chroma height.
Definition: pixdesc.h:89
VAR_HSUB
@ VAR_HSUB
Definition: vf_rotate.c:57
ThreadData::inw
int inw
Definition: vf_rotate.c:87