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 "filters.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 {
53  VAR_IN_W , VAR_IW,
54  VAR_IN_H , VAR_IH,
55  VAR_OUT_W, VAR_OW,
56  VAR_OUT_H, VAR_OH,
57  VAR_HSUB, VAR_VSUB,
58  VAR_N,
59  VAR_T,
60  VAR_VARS_NB
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
68  char *outw_expr_str, *outh_expr_str;
69  int outh, outw;
70  uint8_t fillcolor[4]; ///< color expressed either in YUVA or RGBA colorspace for the padding area
71  char *fillcolor_str;
72  int fillcolor_enable;
73  int hsub, vsub;
74  int nb_planes;
75  int use_bilinear;
76  float sinx, cosx;
77  double var_values[VAR_VARS_NB];
78  FFDrawContext draw;
79  FFDrawColor color;
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 
112 AVFILTER_DEFINE_CLASS(rotate);
113 
114 static av_cold int init(AVFilterContext *ctx)
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 
127 static av_cold void uninit(AVFilterContext *ctx)
128 {
129  RotContext *rot = ctx->priv;
130 
131  av_expr_free(rot->angle_expr);
132  rot->angle_expr = NULL;
133 }
134 
135 static const enum AVPixelFormat pix_fmts[] = {
136  AV_PIX_FMT_GBRP, AV_PIX_FMT_GBRAP,
137  AV_PIX_FMT_ARGB, AV_PIX_FMT_RGBA,
138  AV_PIX_FMT_ABGR, AV_PIX_FMT_BGRA,
139  AV_PIX_FMT_0RGB, AV_PIX_FMT_RGB0,
140  AV_PIX_FMT_0BGR, AV_PIX_FMT_BGR0,
141  AV_PIX_FMT_RGB24, AV_PIX_FMT_BGR24,
142  AV_PIX_FMT_GRAY8,
143  AV_PIX_FMT_YUV410P,
144  AV_PIX_FMT_YUV444P, AV_PIX_FMT_YUVJ444P,
145  AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUVJ420P,
146  AV_PIX_FMT_YUVA444P, AV_PIX_FMT_YUVA420P,
147  AV_PIX_FMT_YUV420P10LE, AV_PIX_FMT_YUVA420P10LE,
148  AV_PIX_FMT_YUV444P10LE, AV_PIX_FMT_YUVA444P10LE,
149  AV_PIX_FMT_YUV420P12LE,
150  AV_PIX_FMT_YUV444P12LE,
151  AV_PIX_FMT_YUV444P16LE, AV_PIX_FMT_YUVA444P16LE,
152  AV_PIX_FMT_YUV420P16LE, AV_PIX_FMT_YUVA420P16LE,
153  AV_PIX_FMT_YUV444P9LE, AV_PIX_FMT_YUVA444P9LE,
154  AV_PIX_FMT_YUV420P9LE, AV_PIX_FMT_YUVA420P9LE,
155  AV_PIX_FMT_NONE
156 };
157 
158 static double get_rotated_w(void *opaque, double angle)
159 {
160  RotContext *rot = opaque;
161  double inw = rot->var_values[VAR_IN_W];
162  double inh = rot->var_values[VAR_IN_H];
163  float sinx = sin(angle);
164  float cosx = cos(angle);
165 
166  return FFMAX(0, inh * sinx) + FFMAX(0, -inw * cosx) +
167  FFMAX(0, inw * cosx) + FFMAX(0, -inh * sinx);
168 }
169 
170 static double get_rotated_h(void *opaque, double angle)
171 {
172  RotContext *rot = opaque;
173  double inw = rot->var_values[VAR_IN_W];
174  double inh = rot->var_values[VAR_IN_H];
175  float sinx = sin(angle);
176  float cosx = cos(angle);
177 
178  return FFMAX(0, -inh * cosx) + FFMAX(0, -inw * sinx) +
179  FFMAX(0, inh * cosx) + FFMAX(0, inw * sinx);
180 }
181 
182 static double (* const func1[])(void *, double) = {
183  get_rotated_w,
184  get_rotated_h,
185  NULL
186 };
187 
188 static const char * const func1_names[] = {
189  "rotw",
190  "roth",
191  NULL
192 };
193 
194 #define FIXP (1<<16)
195 #define FIXP2 (1<<20)
196 #define INT_PI 3294199 //(M_PI * FIXP2)
197 
198 /**
199  * Compute the sin of a using integer values.
200  * Input is scaled by FIXP2 and output values are scaled by FIXP.
201  */
202 static int64_t int_sin(int64_t a)
203 {
204  int64_t a2, res = 0;
205  int i;
206  if (a < 0) a = INT_PI-a; // 0..inf
207  a %= 2 * INT_PI; // 0..2PI
208 
209  if (a >= INT_PI*3/2) a -= 2*INT_PI; // -PI/2 .. 3PI/2
210  if (a >= INT_PI/2 ) a = INT_PI - a; // -PI/2 .. PI/2
211 
212  /* compute sin using Taylor series approximated to the fifth term */
213  a2 = (a*a)/(FIXP2);
214  for (i = 2; i < 11; i += 2) {
215  res += a;
216  a = -a*a2 / (FIXP2*i*(i+1));
217  }
218  return (res + 8)>>4;
219 }
220 
221 /**
222  * Interpolate the color in src at position x and y using bilinear
223  * interpolation.
224  */
225 static uint8_t *interpolate_bilinear8(uint8_t *dst_color,
226  const uint8_t *src, int src_linesize, int src_linestep,
227  int x, int y, int max_x, int max_y)
228 {
229  int int_x = av_clip(x>>16, 0, max_x);
230  int int_y = av_clip(y>>16, 0, max_y);
231  int frac_x = x&0xFFFF;
232  int frac_y = y&0xFFFF;
233  int i;
234  int int_x1 = FFMIN(int_x+1, max_x);
235  int int_y1 = FFMIN(int_y+1, max_y);
236 
237  for (i = 0; i < src_linestep; i++) {
238  int s00 = src[src_linestep * int_x + i + src_linesize * int_y ];
239  int s01 = src[src_linestep * int_x1 + i + src_linesize * int_y ];
240  int s10 = src[src_linestep * int_x + i + src_linesize * int_y1];
241  int s11 = src[src_linestep * int_x1 + i + src_linesize * int_y1];
242  int s0 = (((1<<16) - frac_x)*s00 + frac_x*s01);
243  int s1 = (((1<<16) - frac_x)*s10 + frac_x*s11);
244 
245  dst_color[i] = ((int64_t)((1<<16) - frac_y)*s0 + (int64_t)frac_y*s1) >> 32;
246  }
247 
248  return dst_color;
249 }
250 
251 /**
252  * Interpolate the color in src at position x and y using bilinear
253  * interpolation.
254  */
255 static uint8_t *interpolate_bilinear16(uint8_t *dst_color,
256  const uint8_t *src, int src_linesize, int src_linestep,
257  int x, int y, int max_x, int max_y)
258 {
259  int int_x = av_clip(x>>16, 0, max_x);
260  int int_y = av_clip(y>>16, 0, max_y);
261  int64_t frac_x = x&0xFFFF;
262  int64_t frac_y = y&0xFFFF;
263  int i;
264  int int_x1 = FFMIN(int_x+1, max_x);
265  int int_y1 = FFMIN(int_y+1, max_y);
266 
267  for (i = 0; i < src_linestep; i+=2) {
268  int s00 = AV_RL16(&src[src_linestep * int_x + i + src_linesize * int_y ]);
269  int s01 = AV_RL16(&src[src_linestep * int_x1 + i + src_linesize * int_y ]);
270  int s10 = AV_RL16(&src[src_linestep * int_x + i + src_linesize * int_y1]);
271  int s11 = AV_RL16(&src[src_linestep * int_x1 + i + src_linesize * int_y1]);
272  int64_t s0 = (((1<<16) - frac_x)*s00 + frac_x*s01);
273  int64_t s1 = (((1<<16) - frac_x)*s10 + frac_x*s11);
274 
275  AV_WL16(&dst_color[i], (((1<<16) - frac_y)*s0 + frac_y*s1) >> 32);
276  }
277 
278  return dst_color;
279 }
280 
281 static int config_props(AVFilterLink *outlink)
282 {
283  AVFilterContext *ctx = outlink->src;
284  RotContext *rot = ctx->priv;
285  AVFilterLink *inlink = ctx->inputs[0];
286  const AVPixFmtDescriptor *pixdesc = av_pix_fmt_desc_get(inlink->format);
287  int ret;
288  double res;
289  char *expr;
290 
291  ret = ff_draw_init2(&rot->draw, inlink->format, inlink->colorspace, inlink->color_range, 0);
292  if (ret < 0)
293  return ret;
294  ff_draw_color(&rot->draw, &rot->color, rot->fillcolor);
295 
296  rot->hsub = pixdesc->log2_chroma_w;
297  rot->vsub = pixdesc->log2_chroma_h;
298 
299  if (pixdesc->comp[0].depth == 8)
300  rot->interpolate_bilinear = interpolate_bilinear8;
301  else
302  rot->interpolate_bilinear = interpolate_bilinear16;
303 
304  rot->var_values[VAR_IN_W] = rot->var_values[VAR_IW] = inlink->w;
305  rot->var_values[VAR_IN_H] = rot->var_values[VAR_IH] = inlink->h;
306  rot->var_values[VAR_HSUB] = 1<<rot->hsub;
307  rot->var_values[VAR_VSUB] = 1<<rot->vsub;
308  rot->var_values[VAR_N] = NAN;
309  rot->var_values[VAR_T] = NAN;
310  rot->var_values[VAR_OUT_W] = rot->var_values[VAR_OW] = NAN;
311  rot->var_values[VAR_OUT_H] = rot->var_values[VAR_OH] = NAN;
312 
313  av_expr_free(rot->angle_expr);
314  rot->angle_expr = NULL;
315  if ((ret = av_expr_parse(&rot->angle_expr, expr = rot->angle_expr_str, var_names,
316  func1_names, func1, NULL, NULL, 0, ctx)) < 0) {
317  av_log(ctx, AV_LOG_ERROR,
318  "Error occurred parsing angle expression '%s'\n", rot->angle_expr_str);
319  return ret;
320  }
321 
322 #define SET_SIZE_EXPR(name, opt_name) do { \
323  ret = av_expr_parse_and_eval(&res, expr = rot->name##_expr_str, \
324  var_names, rot->var_values, \
325  func1_names, func1, NULL, NULL, rot, 0, ctx); \
326  if (ret < 0 || isnan(res) || isinf(res) || res <= 0) { \
327  av_log(ctx, AV_LOG_ERROR, \
328  "Error parsing or evaluating expression for option %s: " \
329  "invalid expression '%s' or non-positive or indefinite value %f\n", \
330  opt_name, expr, res); \
331  return ret; \
332  } \
333 } while (0)
334 
335  /* evaluate width and height */
336  av_expr_parse_and_eval(&res, expr = rot->outw_expr_str, var_names, rot->var_values,
337  func1_names, func1, NULL, NULL, rot, 0, ctx);
338  rot->var_values[VAR_OUT_W] = rot->var_values[VAR_OW] = res;
339  rot->outw = res + 0.5;
340  SET_SIZE_EXPR(outh, "out_h");
341  rot->var_values[VAR_OUT_H] = rot->var_values[VAR_OH] = res;
342  rot->outh = res + 0.5;
343 
344  /* evaluate the width again, as it may depend on the evaluated output height */
345  SET_SIZE_EXPR(outw, "out_w");
346  rot->var_values[VAR_OUT_W] = rot->var_values[VAR_OW] = res;
347  rot->outw = res + 0.5;
348 
349  /* compute number of planes */
350  rot->nb_planes = av_pix_fmt_count_planes(inlink->format);
351  outlink->w = rot->outw;
352  outlink->h = rot->outh;
353  return 0;
354 }
355 
356 static av_always_inline void copy_elem(uint8_t *pout, const uint8_t *pin, int elem_size)
357 {
358  int v;
359  switch (elem_size) {
360  case 1:
361  *pout = *pin;
362  break;
363  case 2:
364  *((uint16_t *)pout) = *((uint16_t *)pin);
365  break;
366  case 3:
367  v = AV_RB24(pin);
368  AV_WB24(pout, v);
369  break;
370  case 4:
371  *((uint32_t *)pout) = *((uint32_t *)pin);
372  break;
373  default:
374  memcpy(pout, pin, elem_size);
375  break;
376  }
377 }
378 
379 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)
380 {
381  int i;
382  switch(angle) {
383  case 0:
384  memcpy(dst, src, elem_size * len);
385  break;
386  case 1:
387  for (i = 0; i<len; i++)
388  copy_elem(dst + i*elem_size, src + (len-i-1)*src_linesize, elem_size);
389  break;
390  case 2:
391  for (i = 0; i<len; i++)
392  copy_elem(dst + i*elem_size, src + (len-i-1)*elem_size, elem_size);
393  break;
394  case 3:
395  for (i = 0; i<len; i++)
396  copy_elem(dst + i*elem_size, src + i*src_linesize, elem_size);
397  break;
398  }
399 }
400 
401 static av_always_inline void simple_rotate(uint8_t *dst, const uint8_t *src, int src_linesize, int angle, int elem_size, int len)
402 {
403  switch(elem_size) {
404  case 1 : simple_rotate_internal(dst, src, src_linesize, angle, 1, len); break;
405  case 2 : simple_rotate_internal(dst, src, src_linesize, angle, 2, len); break;
406  case 3 : simple_rotate_internal(dst, src, src_linesize, angle, 3, len); break;
407  case 4 : simple_rotate_internal(dst, src, src_linesize, angle, 4, len); break;
408  default: simple_rotate_internal(dst, src, src_linesize, angle, elem_size, len); break;
409  }
410 }
411 
412 static int filter_slice(AVFilterContext *ctx, void *arg, int job, int nb_jobs)
413 {
414  ThreadData *td = arg;
415  AVFrame *in = td->in;
416  AVFrame *out = td->out;
417  RotContext *rot = ctx->priv;
418  const int outw = td->outw, outh = td->outh;
419  const int inw = td->inw, inh = td->inh;
420  const int plane = td->plane;
421  const int xi = td->xi, yi = td->yi;
422  const int c = td->c, s = td->s;
423  const int start = (outh * job ) / nb_jobs;
424  const int end = (outh * (job+1)) / nb_jobs;
425  int xprime = td->xprime + start * s;
426  int yprime = td->yprime + start * c;
427  int i, j, x, y;
428 
429  for (j = start; j < end; j++) {
430  x = xprime + xi + FIXP*(inw-1)/2;
431  y = yprime + yi + FIXP*(inh-1)/2;
432 
433  if (fabs(rot->angle - 0) < FLT_EPSILON && outw == inw && outh == inh) {
434  simple_rotate(out->data[plane] + j * out->linesize[plane],
435  in->data[plane] + j * in->linesize[plane],
436  in->linesize[plane], 0, rot->draw.pixelstep[plane], outw);
437  } else if (fabs(rot->angle - M_PI/2) < FLT_EPSILON && outw == inh && outh == inw) {
438  simple_rotate(out->data[plane] + j * out->linesize[plane],
439  in->data[plane] + j * rot->draw.pixelstep[plane],
440  in->linesize[plane], 1, rot->draw.pixelstep[plane], outw);
441  } else if (fabs(rot->angle - M_PI) < FLT_EPSILON && outw == inw && outh == inh) {
442  simple_rotate(out->data[plane] + j * out->linesize[plane],
443  in->data[plane] + (outh-j-1) * in->linesize[plane],
444  in->linesize[plane], 2, rot->draw.pixelstep[plane], outw);
445  } else if (fabs(rot->angle - 3*M_PI/2) < FLT_EPSILON && outw == inh && outh == inw) {
446  simple_rotate(out->data[plane] + j * out->linesize[plane],
447  in->data[plane] + (outh-j-1) * rot->draw.pixelstep[plane],
448  in->linesize[plane], 3, rot->draw.pixelstep[plane], outw);
449  } else {
450 
451  for (i = 0; i < outw; i++) {
452  int32_t v;
453  int x1, y1;
454  uint8_t *pin, *pout;
455  x1 = x>>16;
456  y1 = y>>16;
457 
458  /* the out-of-range values avoid border artifacts */
459  if (x1 >= -1 && x1 <= inw && y1 >= -1 && y1 <= inh) {
460  uint8_t inp_inv[4]; /* interpolated input value */
461  pout = out->data[plane] + j * out->linesize[plane] + i * rot->draw.pixelstep[plane];
462  if (rot->use_bilinear) {
463  pin = rot->interpolate_bilinear(inp_inv,
464  in->data[plane], in->linesize[plane], rot->draw.pixelstep[plane],
465  x, y, inw-1, inh-1);
466  } else {
467  int x2 = av_clip(x1, 0, inw-1);
468  int y2 = av_clip(y1, 0, inh-1);
469  pin = in->data[plane] + y2 * in->linesize[plane] + x2 * rot->draw.pixelstep[plane];
470  }
471  switch (rot->draw.pixelstep[plane]) {
472  case 1:
473  *pout = *pin;
474  break;
475  case 2:
476  v = AV_RL16(pin);
477  AV_WL16(pout, v);
478  break;
479  case 3:
480  v = AV_RB24(pin);
481  AV_WB24(pout, v);
482  break;
483  case 4:
484  *((uint32_t *)pout) = *((uint32_t *)pin);
485  break;
486  default:
487  memcpy(pout, pin, rot->draw.pixelstep[plane]);
488  break;
489  }
490  }
491  x += c;
492  y -= s;
493  }
494  }
495  xprime += s;
496  yprime += c;
497  }
498 
499  return 0;
500 }
501 
502 static int filter_frame(AVFilterLink *inlink, AVFrame *in)
503 {
504  FilterLink *inl = ff_filter_link(inlink);
505  AVFilterContext *ctx = inlink->dst;
506  AVFilterLink *outlink = ctx->outputs[0];
507  AVFrame *out;
508  RotContext *rot = ctx->priv;
509  int angle_int, s, c, plane;
510  double res;
511 
512  out = ff_get_video_buffer(outlink, outlink->w, outlink->h);
513  if (!out) {
514  av_frame_free(&in);
515  return AVERROR(ENOMEM);
516  }
517  av_frame_copy_props(out, in);
518 
519  rot->var_values[VAR_N] = inl->frame_count_out;
520  rot->var_values[VAR_T] = TS2T(in->pts, inlink->time_base);
521  rot->angle = res = av_expr_eval(rot->angle_expr, rot->var_values, rot);
522 
523  av_log(ctx, AV_LOG_DEBUG, "n:%f time:%f angle:%f/PI\n",
524  rot->var_values[VAR_N], rot->var_values[VAR_T], rot->angle/M_PI);
525 
526  angle_int = res * FIXP * 16;
527  s = int_sin(angle_int);
528  c = int_sin(angle_int + INT_PI/2);
529 
530  /* fill background */
531  if (rot->fillcolor_enable)
532  ff_fill_rectangle(&rot->draw, &rot->color, out->data, out->linesize,
533  0, 0, outlink->w, outlink->h);
534 
535  for (plane = 0; plane < rot->nb_planes; plane++) {
536  int hsub = plane == 1 || plane == 2 ? rot->hsub : 0;
537  int vsub = plane == 1 || plane == 2 ? rot->vsub : 0;
538  const int outw = AV_CEIL_RSHIFT(outlink->w, hsub);
539  const int outh = AV_CEIL_RSHIFT(outlink->h, vsub);
540  ThreadData td = { .in = in, .out = out,
541  .inw = AV_CEIL_RSHIFT(inlink->w, hsub),
542  .inh = AV_CEIL_RSHIFT(inlink->h, vsub),
543  .outh = outh, .outw = outw,
544  .xi = -(outw-1) * c / 2, .yi = (outw-1) * s / 2,
545  .xprime = -(outh-1) * s / 2,
546  .yprime = -(outh-1) * c / 2,
547  .plane = plane, .c = c, .s = s };
548 
549  ff_filter_execute(ctx, filter_slice, &td, NULL,
550  FFMIN(outh, ff_filter_get_nb_threads(ctx)));
551  }
552 
553  av_frame_free(&in);
554  return ff_filter_frame(outlink, out);
555 }
556 
557 static int process_command(AVFilterContext *ctx, const char *cmd, const char *args,
558  char *res, int res_len, int flags)
559 {
560  RotContext *rot = ctx->priv;
561  int ret;
562 
563  if (!strcmp(cmd, "angle") || !strcmp(cmd, "a")) {
564  AVExpr *old = rot->angle_expr;
565  ret = av_expr_parse(&rot->angle_expr, args, var_names,
566  NULL, NULL, NULL, NULL, 0, ctx);
567  if (ret < 0) {
568  av_log(ctx, AV_LOG_ERROR,
569  "Error when parsing the expression '%s' for angle command\n", args);
570  rot->angle_expr = old;
571  return ret;
572  }
573  av_expr_free(old);
574  } else
575  ret = AVERROR(ENOSYS);
576 
577  return ret;
578 }
579 
580 static const AVFilterPad rotate_inputs[] = {
581  {
582  .name = "default",
583  .type = AVMEDIA_TYPE_VIDEO,
584  .filter_frame = filter_frame,
585  },
586 };
587 
588 static const AVFilterPad rotate_outputs[] = {
589  {
590  .name = "default",
591  .type = AVMEDIA_TYPE_VIDEO,
592  .config_props = config_props,
593  },
594 };
595 
596 const AVFilter ff_vf_rotate = {
597  .name = "rotate",
598  .description = NULL_IF_CONFIG_SMALL("Rotate the input image."),
599  .priv_size = sizeof(RotContext),
600  .init = init,
601  .uninit = uninit,
602  .process_command = process_command,
603  FILTER_INPUTS(rotate_inputs),
604  FILTER_OUTPUTS(rotate_outputs),
605  FILTER_PIXFMTS_ARRAY(pix_fmts),
606  .priv_class = &rotate_class,
607  .flags = AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC | AVFILTER_FLAG_SLICE_THREADS,
608 };
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:116
int_sin
static int64_t int_sin(int64_t a)
Compute the sin of a using integer values.
Definition: vf_rotate.c:202
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:154
FFDrawColor
Definition: drawutils.h:51
AVPixelFormat
AVPixelFormat
Pixel format.
Definition: pixfmt.h:71
av_clip
#define av_clip
Definition: common.h:100
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
var_name
var_name
Definition: noise.c:47
FILTER_PIXFMTS_ARRAY
#define FILTER_PIXFMTS_ARRAY(array)
Definition: filters.h:242
out
FILE * out
Definition: movenc.c:55
VAR_N
@ VAR_N
Definition: vf_rotate.c:58
FIXP2
#define FIXP2
Definition: vf_rotate.c:195
ff_filter_frame
int ff_filter_frame(AVFilterLink *link, AVFrame *frame)
Send a frame of data to the next filter.
Definition: avfilter.c:1062
av_pix_fmt_desc_get
const AVPixFmtDescriptor * av_pix_fmt_desc_get(enum AVPixelFormat pix_fmt)
Definition: pixdesc.c:3170
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:356
int64_t
long long int64_t
Definition: coverity.c:34
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:162
FILTER_INPUTS
#define FILTER_INPUTS(array)
Definition: filters.h:262
AVFrame
This structure describes decoded (raw) audio or video data.
Definition: frame.h:389
pixdesc.h
AVFrame::pts
int64_t pts
Presentation timestamp in time_base units (time when frame should be shown to user).
Definition: frame.h:501
AVComponentDescriptor::depth
int depth
Number of bits in the component.
Definition: pixdesc.h:57
AVOption
AVOption.
Definition: opt.h:429
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:128
float.h
filter_slice
static int filter_slice(AVFilterContext *ctx, void *arg, int job, int nb_jobs)
Definition: vf_rotate.c:412
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:76
AV_PIX_FMT_BGRA
@ AV_PIX_FMT_BGRA
packed BGRA 8:8:8:8, 32bpp, BGRABGRA...
Definition: pixfmt.h:102
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:205
ThreadData::out
AVFrame * out
Definition: af_adeclick.c:526
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:194
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:255
ThreadData::in
AVFrame * in
Definition: af_adecorrelate.c:155
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:557
AVFrame::data
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
Definition: frame.h:410
FFDrawContext::pixelstep
int pixelstep[MAX_PLANES]
Definition: drawutils.h:40
get_rotated_h
static double get_rotated_h(void *opaque, double angle)
Definition: vf_rotate.c:170
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:132
hsub
static void hsub(htype *dst, const htype *src, int bins)
Definition: vf_median.c:74
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:710
ff_vf_rotate
const AVFilter ff_vf_rotate
Definition: vf_rotate.c:596
av_pix_fmt_count_planes
int av_pix_fmt_count_planes(enum AVPixelFormat pix_fmt)
Definition: pixdesc.c:3210
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:379
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:212
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:268
RotContext::nb_planes
int nb_planes
Definition: vf_rotate.c:74
RotContext::angle
double angle
Definition: vf_rotate.c:65
a2
static double a2(void *priv, double x, double y)
Definition: vf_xfade.c:2030
func1_names
static const char *const func1_names[]
Definition: vf_rotate.c:188
av_expr_free
void av_expr_free(AVExpr *e)
Free a parsed expression previously created with av_expr_parse().
Definition: eval.c:358
AVFilterPad
A filter pad used for either input or output.
Definition: filters.h:38
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:156
rotate
static void rotate(const float rot_quaternion[2][4], float *vec)
Rotate vector with given rotation quaternion.
Definition: vf_v360.c:4071
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:276
ThreadData::xi
int xi
Definition: vf_rotate.c:90
AV_LOG_ERROR
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:209
av_cold
#define av_cold
Definition: attributes.h:90
ThreadData::plane
int plane
Definition: vf_blend.c:60
intreadwrite.h
s
#define s(width, name)
Definition: cbs_vp9.c:198
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:108
VAR_IN_H
@ VAR_IN_H
Definition: vf_rotate.c:54
AV_CEIL_RSHIFT
#define AV_CEIL_RSHIFT(a, b)
Definition: common.h:60
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
filters.h
AV_LOG_DEBUG
#define AV_LOG_DEBUG
Stuff which is only useful for libav* developers.
Definition: log.h:230
ctx
AVFormatContext * ctx
Definition: movenc.c:49
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:418
av_expr_eval
double av_expr_eval(AVExpr *e, const double *const_values, void *opaque)
Evaluate a previously parsed expression.
Definition: eval.c:792
AVExpr
Definition: eval.c:158
RotContext::outw
int outw
Definition: vf_rotate.c:69
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:73
FILTER_OUTPUTS
#define FILTER_OUTPUTS(array)
Definition: filters.h:263
NAN
#define NAN
Definition: mathematics.h:115
filter_frame
static int filter_frame(AVFilterLink *inlink, AVFrame *in)
Definition: vf_rotate.c:502
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:87
AV_PIX_FMT_RGBA
@ AV_PIX_FMT_RGBA
packed RGBA 8:8:8:8, 32bpp, RGBARGBA...
Definition: pixfmt.h:100
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:162
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:75
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:713
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:85
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:180
double
double
Definition: af_crystalizer.c:132
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:188
AV_PIX_FMT_BGR0
@ AV_PIX_FMT_BGR0
packed BGR 8:8:8, 32bpp, BGRXBGRX... X=unused/undefined
Definition: pixfmt.h:265
ThreadData::c
int c
Definition: vf_rotate.c:92
AV_PIX_FMT_GRAY8
@ AV_PIX_FMT_GRAY8
Y , 8bpp.
Definition: pixfmt.h:81
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:176
AV_PIX_FMT_ABGR
@ AV_PIX_FMT_ABGR
packed ABGR 8:8:8:8, 32bpp, ABGRABGR...
Definition: pixfmt.h:101
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
ff_filter_link
static FilterLink * ff_filter_link(AVFilterLink *link)
Definition: filters.h:197
eval.h
AV_PIX_FMT_RGB24
@ AV_PIX_FMT_RGB24
packed RGB 8:8:8, 24bpp, RGBRGB...
Definition: pixfmt.h:75
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:401
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:94
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:803
VAR_VARS_NB
@ VAR_VARS_NB
Definition: vf_rotate.c:60
VAR_IH
@ VAR_IH
Definition: vf_rotate.c:54
dst
uint8_t ptrdiff_t const uint8_t ptrdiff_t int intptr_t intptr_t int int16_t * dst
Definition: dsp.h:83
ff_draw_init2
int ff_draw_init2(FFDrawContext *draw, enum AVPixelFormat format, enum AVColorSpace csp, enum AVColorRange range, unsigned flags)
Init a draw context.
Definition: drawutils.c:95
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:246
TS2T
#define TS2T(ts, tb)
Definition: filters.h:278
AV_WB24
#define AV_WB24(p, d)
Definition: intreadwrite.h:446
AV_WL16
#define AV_WL16(p, v)
Definition: intreadwrite.h:408
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:580
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:174
AV_PIX_FMT_RGB0
@ AV_PIX_FMT_RGB0
packed RGB 8:8:8, 32bpp, RGBXRGBX... X=unused/undefined
Definition: pixfmt.h:263
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:182
rotate_outputs
static const AVFilterPad rotate_outputs[]
Definition: vf_rotate.c:588
M_PI
#define M_PI
Definition: mathematics.h:67
RotContext::outh_expr_str
char * outh_expr_str
Definition: vf_rotate.c:68
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:182
AV_PIX_FMT_ARGB
@ AV_PIX_FMT_ARGB
packed ARGB 8:8:8:8, 32bpp, ARGBARGB...
Definition: pixfmt.h:99
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
uninit
static av_cold void uninit(AVFilterContext *ctx)
Definition: vf_rotate.c:127
func1
static double(*const func1[])(void *, double)
Definition: vf_rotate.c:182
get_rotated_w
static double get_rotated_w(void *opaque, double angle)
Definition: vf_rotate.c:158
i
#define i(width, name, range_min, range_max)
Definition: cbs_h2645.c:256
ff_filter_get_nb_threads
int ff_filter_get_nb_threads(AVFilterContext *ctx)
Get number of threads for current filter instance.
Definition: avfilter.c:841
ThreadData
Used for passing data between threads.
Definition: dsddec.c:71
av_always_inline
#define av_always_inline
Definition: attributes.h:49
FFMIN
#define FFMIN(a, b)
Definition: macros.h:49
FFDrawContext
Definition: drawutils.h:36
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: filters.h:44
ff_draw_color
void ff_draw_color(FFDrawContext *draw, FFDrawColor *color, const uint8_t rgba[4])
Prepare a color.
Definition: drawutils.c:171
AVFilter
Filter definition.
Definition: avfilter.h:201
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:196
AV_PIX_FMT_0BGR
@ AV_PIX_FMT_0BGR
packed BGR 8:8:8, 32bpp, XBGRXBGR... X=unused/undefined
Definition: pixfmt.h:264
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:281
ThreadData::outw
int outw
Definition: vf_rotate.c:88
RotContext::fillcolor_enable
int fillcolor_enable
Definition: vf_rotate.c:72
ff_filter_execute
int ff_filter_execute(AVFilterContext *ctx, avfilter_action_func *func, void *arg, int *ret, int nb_jobs)
Definition: avfilter.c:1667
AV_PIX_FMT_NONE
@ AV_PIX_FMT_NONE
Definition: pixfmt.h:72
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:160
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:78
AVFilterContext
An instance of a filter.
Definition: avfilter.h:457
ThreadData::s
const void ** s
Definition: af_crystalizer.c:49
AV_PIX_FMT_GBRP
@ AV_PIX_FMT_GBRP
planar GBR 4:4:4 24bpp
Definition: pixfmt.h:165
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:152
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
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:186
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
Underlying C type is int.
Definition: opt.h:327
pix_fmts
static enum AVPixelFormat pix_fmts[]
Definition: vf_rotate.c:135
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:482
AVFrame::linesize
int linesize[AV_NUM_DATA_POINTERS]
For video, a positive or negative value, which is typically indicating the size in bytes of each pict...
Definition: frame.h:434
AV_PIX_FMT_0RGB
@ AV_PIX_FMT_0RGB
packed RGB 8:8:8, 32bpp, XRGBXRGB... X=unused/undefined
Definition: pixfmt.h:262
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:79
av_log
#define av_log(a,...)
Definition: tableprint_vlc.h:27
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:225
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:192
AV_OPT_TYPE_STRING
@ AV_OPT_TYPE_STRING
Underlying C type is a uint8_t* that is either NULL or points to a C string allocated with the av_mal...
Definition: opt.h:276
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:356
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
src
#define src
Definition: vp8dsp.c:248
VAR_HSUB
@ VAR_HSUB
Definition: vf_rotate.c:57
ThreadData::inw
int inw
Definition: vf_rotate.c:87
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