FFmpeg  4.4.5
vf_hue.c
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1 /*
2  * Copyright (c) 2003 Michael Niedermayer
3  * Copyright (c) 2012 Jeremy Tran
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  * Apply a hue/saturation filter to the input video
25  * Ported from MPlayer libmpcodecs/vf_hue.c.
26  */
27 
28 #include <float.h>
29 #include "libavutil/eval.h"
30 #include "libavutil/imgutils.h"
31 #include "libavutil/opt.h"
32 #include "libavutil/pixdesc.h"
33 
34 #include "avfilter.h"
35 #include "formats.h"
36 #include "internal.h"
37 #include "video.h"
38 
39 #define SAT_MIN_VAL -10
40 #define SAT_MAX_VAL 10
41 
42 static const char *const var_names[] = {
43  "n", // frame count
44  "pts", // presentation timestamp expressed in AV_TIME_BASE units
45  "r", // frame rate
46  "t", // timestamp expressed in seconds
47  "tb", // timebase
48  NULL
49 };
50 
51 enum var_name {
57  VAR_NB
58 };
59 
60 typedef struct HueContext {
61  const AVClass *class;
62  float hue_deg; /* hue expressed in degrees */
63  float hue; /* hue expressed in radians */
64  char *hue_deg_expr;
65  char *hue_expr;
68  float saturation;
71  float brightness;
74  int hsub;
75  int vsub;
76  int is_first;
79  double var_values[VAR_NB];
80  uint8_t lut_l[256];
81  uint8_t lut_u[256][256];
82  uint8_t lut_v[256][256];
83  uint16_t lut_l16[65536];
84  uint16_t lut_u10[1024][1024];
85  uint16_t lut_v10[1024][1024];
86 } HueContext;
87 
88 #define OFFSET(x) offsetof(HueContext, x)
89 #define FLAGS AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_RUNTIME_PARAM
90 static const AVOption hue_options[] = {
91  { "h", "set the hue angle degrees expression", OFFSET(hue_deg_expr), AV_OPT_TYPE_STRING,
92  { .str = NULL }, .flags = FLAGS },
93  { "s", "set the saturation expression", OFFSET(saturation_expr), AV_OPT_TYPE_STRING,
94  { .str = "1" }, .flags = FLAGS },
95  { "H", "set the hue angle radians expression", OFFSET(hue_expr), AV_OPT_TYPE_STRING,
96  { .str = NULL }, .flags = FLAGS },
97  { "b", "set the brightness expression", OFFSET(brightness_expr), AV_OPT_TYPE_STRING,
98  { .str = "0" }, .flags = FLAGS },
99  { NULL }
100 };
101 
103 
104 static inline void compute_sin_and_cos(HueContext *hue)
105 {
106  /*
107  * Scale the value to the norm of the resulting (U,V) vector, that is
108  * the saturation.
109  * This will be useful in the apply_lut function.
110  */
111  hue->hue_sin = lrint(sin(hue->hue) * (1 << 16) * hue->saturation);
112  hue->hue_cos = lrint(cos(hue->hue) * (1 << 16) * hue->saturation);
113 }
114 
115 static inline void create_luma_lut(HueContext *h)
116 {
117  const float b = h->brightness;
118  int i;
119 
120  for (i = 0; i < 256; i++) {
121  h->lut_l[i] = av_clip_uint8(i + b * 25.5);
122  }
123  for (i = 0; i < 65536; i++) {
124  h->lut_l16[i] = av_clip_uintp2(i + b * 102.4, 10);
125  }
126 }
127 
128 static inline void create_chrominance_lut(HueContext *h, const int32_t c,
129  const int32_t s)
130 {
131  int32_t i, j, u, v, new_u, new_v;
132 
133  /*
134  * If we consider U and V as the components of a 2D vector then its angle
135  * is the hue and the norm is the saturation
136  */
137  for (i = 0; i < 256; i++) {
138  for (j = 0; j < 256; j++) {
139  /* Normalize the components from range [16;240] to [-112;112] */
140  u = i - 128;
141  v = j - 128;
142  /*
143  * Apply the rotation of the vector : (c * u) - (s * v)
144  * (s * u) + (c * v)
145  * De-normalize the components (without forgetting to scale 128
146  * by << 16)
147  * Finally scale back the result by >> 16
148  */
149  new_u = ((c * u) - (s * v) + (1 << 15) + (128 << 16)) >> 16;
150  new_v = ((s * u) + (c * v) + (1 << 15) + (128 << 16)) >> 16;
151 
152  /* Prevent a potential overflow */
153  h->lut_u[i][j] = av_clip_uint8(new_u);
154  h->lut_v[i][j] = av_clip_uint8(new_v);
155  }
156  }
157  for (i = 0; i < 1024; i++) {
158  for (j = 0; j < 1024; j++) {
159  u = i - 512;
160  v = j - 512;
161  /*
162  * Apply the rotation of the vector : (c * u) - (s * v)
163  * (s * u) + (c * v)
164  * De-normalize the components (without forgetting to scale 512
165  * by << 16)
166  * Finally scale back the result by >> 16
167  */
168  new_u = ((c * u) - (s * v) + (1 << 15) + (512 << 16)) >> 16;
169  new_v = ((s * u) + (c * v) + (1 << 15) + (512 << 16)) >> 16;
170 
171  /* Prevent a potential overflow */
172  h->lut_u10[i][j] = av_clip_uintp2(new_u, 10);
173  h->lut_v10[i][j] = av_clip_uintp2(new_v, 10);
174  }
175  }
176 }
177 
178 static int set_expr(AVExpr **pexpr_ptr, char **expr_ptr,
179  const char *expr, const char *option, void *log_ctx)
180 {
181  int ret;
182  AVExpr *new_pexpr;
183  char *new_expr;
184 
185  new_expr = av_strdup(expr);
186  if (!new_expr)
187  return AVERROR(ENOMEM);
188  ret = av_expr_parse(&new_pexpr, expr, var_names,
189  NULL, NULL, NULL, NULL, 0, log_ctx);
190  if (ret < 0) {
191  av_log(log_ctx, AV_LOG_ERROR,
192  "Error when evaluating the expression '%s' for %s\n",
193  expr, option);
194  av_free(new_expr);
195  return ret;
196  }
197 
198  if (*pexpr_ptr)
199  av_expr_free(*pexpr_ptr);
200  *pexpr_ptr = new_pexpr;
201  av_freep(expr_ptr);
202  *expr_ptr = new_expr;
203 
204  return 0;
205 }
206 
208 {
209  HueContext *hue = ctx->priv;
210  int ret;
211 
212  if (hue->hue_expr && hue->hue_deg_expr) {
214  "H and h options are incompatible and cannot be specified "
215  "at the same time\n");
216  return AVERROR(EINVAL);
217  }
218 
219 #define SET_EXPR(expr, option) \
220  if (hue->expr##_expr) do { \
221  ret = set_expr(&hue->expr##_pexpr, &hue->expr##_expr, \
222  hue->expr##_expr, option, ctx); \
223  if (ret < 0) \
224  return ret; \
225  } while (0)
226  SET_EXPR(brightness, "b");
227  SET_EXPR(saturation, "s");
228  SET_EXPR(hue_deg, "h");
229  SET_EXPR(hue, "H");
230 #undef SET_EXPR
231 
233  "H_expr:%s h_deg_expr:%s s_expr:%s b_expr:%s\n",
234  hue->hue_expr, hue->hue_deg_expr, hue->saturation_expr, hue->brightness_expr);
235  compute_sin_and_cos(hue);
236  hue->is_first = 1;
237 
238  return 0;
239 }
240 
242 {
243  HueContext *hue = ctx->priv;
244 
247  av_expr_free(hue->hue_pexpr);
249 }
250 
252 {
253  static const enum AVPixelFormat pix_fmts[] = {
265  };
267  if (!fmts_list)
268  return AVERROR(ENOMEM);
269  return ff_set_common_formats(ctx, fmts_list);
270 }
271 
272 static int config_props(AVFilterLink *inlink)
273 {
274  HueContext *hue = inlink->dst->priv;
276 
277  hue->hsub = desc->log2_chroma_w;
278  hue->vsub = desc->log2_chroma_h;
279 
280  hue->var_values[VAR_N] = 0;
281  hue->var_values[VAR_TB] = av_q2d(inlink->time_base);
282  hue->var_values[VAR_R] = inlink->frame_rate.num == 0 || inlink->frame_rate.den == 0 ?
283  NAN : av_q2d(inlink->frame_rate);
284 
285  return 0;
286 }
287 
289  uint8_t *ldst, const int dst_linesize,
290  uint8_t *lsrc, const int src_linesize,
291  int w, int h)
292 {
293  int i;
294 
295  while (h--) {
296  for (i = 0; i < w; i++)
297  ldst[i] = s->lut_l[lsrc[i]];
298 
299  lsrc += src_linesize;
300  ldst += dst_linesize;
301  }
302 }
303 
305  uint16_t *ldst, const int dst_linesize,
306  uint16_t *lsrc, const int src_linesize,
307  int w, int h)
308 {
309  int i;
310 
311  while (h--) {
312  for (i = 0; i < w; i++)
313  ldst[i] = s->lut_l16[lsrc[i]];
314 
315  lsrc += src_linesize;
316  ldst += dst_linesize;
317  }
318 }
319 
320 static void apply_lut(HueContext *s,
321  uint8_t *udst, uint8_t *vdst, const int dst_linesize,
322  uint8_t *usrc, uint8_t *vsrc, const int src_linesize,
323  int w, int h)
324 {
325  int i;
326 
327  while (h--) {
328  for (i = 0; i < w; i++) {
329  const int u = usrc[i];
330  const int v = vsrc[i];
331 
332  udst[i] = s->lut_u[u][v];
333  vdst[i] = s->lut_v[u][v];
334  }
335 
336  usrc += src_linesize;
337  vsrc += src_linesize;
338  udst += dst_linesize;
339  vdst += dst_linesize;
340  }
341 }
342 
343 static void apply_lut10(HueContext *s,
344  uint16_t *udst, uint16_t *vdst, const int dst_linesize,
345  uint16_t *usrc, uint16_t *vsrc, const int src_linesize,
346  int w, int h)
347 {
348  int i;
349 
350  while (h--) {
351  for (i = 0; i < w; i++) {
352  const int u = av_clip_uintp2(usrc[i], 10);
353  const int v = av_clip_uintp2(vsrc[i], 10);
354 
355  udst[i] = s->lut_u10[u][v];
356  vdst[i] = s->lut_v10[u][v];
357  }
358 
359  usrc += src_linesize;
360  vsrc += src_linesize;
361  udst += dst_linesize;
362  vdst += dst_linesize;
363  }
364 }
365 
366 static int filter_frame(AVFilterLink *inlink, AVFrame *inpic)
367 {
368  HueContext *hue = inlink->dst->priv;
369  AVFilterLink *outlink = inlink->dst->outputs[0];
370  AVFrame *outpic;
371  const int32_t old_hue_sin = hue->hue_sin, old_hue_cos = hue->hue_cos;
372  const float old_brightness = hue->brightness;
373  int direct = 0;
375  const int bps = desc->comp[0].depth > 8 ? 2 : 1;
376 
378  direct = 1;
379  outpic = inpic;
380  } else {
381  outpic = ff_get_video_buffer(outlink, outlink->w, outlink->h);
382  if (!outpic) {
384  return AVERROR(ENOMEM);
385  }
386  av_frame_copy_props(outpic, inpic);
387  }
388 
389  hue->var_values[VAR_N] = inlink->frame_count_out;
390  hue->var_values[VAR_T] = TS2T(inpic->pts, inlink->time_base);
391  hue->var_values[VAR_PTS] = TS2D(inpic->pts);
392 
393  if (hue->saturation_expr) {
395 
396  if (hue->saturation < SAT_MIN_VAL || hue->saturation > SAT_MAX_VAL) {
398  av_log(inlink->dst, AV_LOG_WARNING,
399  "Saturation value not in range [%d,%d]: clipping value to %0.1f\n",
401  }
402  }
403 
404  if (hue->brightness_expr) {
406 
407  if (hue->brightness < -10 || hue->brightness > 10) {
408  hue->brightness = av_clipf(hue->brightness, -10, 10);
409  av_log(inlink->dst, AV_LOG_WARNING,
410  "Brightness value not in range [%d,%d]: clipping value to %0.1f\n",
411  -10, 10, hue->brightness);
412  }
413  }
414 
415  if (hue->hue_deg_expr) {
416  hue->hue_deg = av_expr_eval(hue->hue_deg_pexpr, hue->var_values, NULL);
417  hue->hue = hue->hue_deg * M_PI / 180;
418  } else if (hue->hue_expr) {
419  hue->hue = av_expr_eval(hue->hue_pexpr, hue->var_values, NULL);
420  hue->hue_deg = hue->hue * 180 / M_PI;
421  }
422 
423  av_log(inlink->dst, AV_LOG_DEBUG,
424  "H:%0.1f*PI h:%0.1f s:%0.1f b:%0.f t:%0.1f n:%d\n",
425  hue->hue/M_PI, hue->hue_deg, hue->saturation, hue->brightness,
426  hue->var_values[VAR_T], (int)hue->var_values[VAR_N]);
427 
428  compute_sin_and_cos(hue);
429  if (hue->is_first || (old_hue_sin != hue->hue_sin || old_hue_cos != hue->hue_cos))
430  create_chrominance_lut(hue, hue->hue_cos, hue->hue_sin);
431 
432  if (hue->is_first || (old_brightness != hue->brightness && hue->brightness))
433  create_luma_lut(hue);
434 
435  if (!direct) {
436  if (!hue->brightness)
437  av_image_copy_plane(outpic->data[0], outpic->linesize[0],
438  inpic->data[0], inpic->linesize[0],
439  inlink->w * bps, inlink->h);
440  if (inpic->data[3])
441  av_image_copy_plane(outpic->data[3], outpic->linesize[3],
442  inpic->data[3], inpic->linesize[3],
443  inlink->w * bps, inlink->h);
444  }
445 
446  if (bps > 1) {
447  apply_lut10(hue, (uint16_t*)outpic->data[1], (uint16_t*)outpic->data[2], outpic->linesize[1]/2,
448  (uint16_t*) inpic->data[1], (uint16_t*) inpic->data[2], inpic->linesize[1]/2,
449  AV_CEIL_RSHIFT(inlink->w, hue->hsub),
450  AV_CEIL_RSHIFT(inlink->h, hue->vsub));
451  if (hue->brightness)
452  apply_luma_lut10(hue, (uint16_t*)outpic->data[0], outpic->linesize[0]/2,
453  (uint16_t*) inpic->data[0], inpic->linesize[0]/2, inlink->w, inlink->h);
454  } else {
455  apply_lut(hue, outpic->data[1], outpic->data[2], outpic->linesize[1],
456  inpic->data[1], inpic->data[2], inpic->linesize[1],
457  AV_CEIL_RSHIFT(inlink->w, hue->hsub),
458  AV_CEIL_RSHIFT(inlink->h, hue->vsub));
459  if (hue->brightness)
460  apply_luma_lut(hue, outpic->data[0], outpic->linesize[0],
461  inpic->data[0], inpic->linesize[0], inlink->w, inlink->h);
462  }
463 
464  if (!direct)
466 
467  hue->is_first = 0;
468  return ff_filter_frame(outlink, outpic);
469 }
470 
471 static int process_command(AVFilterContext *ctx, const char *cmd, const char *args,
472  char *res, int res_len, int flags)
473 {
474  HueContext *hue = ctx->priv;
475  int ret;
476 
477 #define SET_EXPR(expr, option) \
478  do { \
479  ret = set_expr(&hue->expr##_pexpr, &hue->expr##_expr, \
480  args, option, ctx); \
481  if (ret < 0) \
482  return ret; \
483  } while (0)
484 
485  if (!strcmp(cmd, "h")) {
486  SET_EXPR(hue_deg, "h");
487  av_freep(&hue->hue_expr);
488  } else if (!strcmp(cmd, "H")) {
489  SET_EXPR(hue, "H");
490  av_freep(&hue->hue_deg_expr);
491  } else if (!strcmp(cmd, "s")) {
492  SET_EXPR(saturation, "s");
493  } else if (!strcmp(cmd, "b")) {
494  SET_EXPR(brightness, "b");
495  } else
496  return AVERROR(ENOSYS);
497 
498  return 0;
499 }
500 
501 static const AVFilterPad hue_inputs[] = {
502  {
503  .name = "default",
504  .type = AVMEDIA_TYPE_VIDEO,
505  .filter_frame = filter_frame,
506  .config_props = config_props,
507  },
508  { NULL }
509 };
510 
511 static const AVFilterPad hue_outputs[] = {
512  {
513  .name = "default",
514  .type = AVMEDIA_TYPE_VIDEO,
515  },
516  { NULL }
517 };
518 
520  .name = "hue",
521  .description = NULL_IF_CONFIG_SMALL("Adjust the hue and saturation of the input video."),
522  .priv_size = sizeof(HueContext),
523  .init = init,
524  .uninit = uninit,
527  .inputs = hue_inputs,
528  .outputs = hue_outputs,
529  .priv_class = &hue_class,
531 };
static const AVFilterPad inputs[]
Definition: af_acontrast.c:193
static const AVFilterPad outputs[]
Definition: af_acontrast.c:203
#define av_cold
Definition: attributes.h:88
uint8_t
int32_t
int ff_filter_frame(AVFilterLink *link, AVFrame *frame)
Send a frame of data to the next filter.
Definition: avfilter.c:1096
Main libavfilter public API header.
#define flags(name, subs,...)
Definition: cbs_av1.c:572
#define u(width, name, range_min, range_max)
Definition: cbs_h2645.c:264
#define s(width, name)
Definition: cbs_vp9.c:257
#define AV_CEIL_RSHIFT(a, b)
Definition: common.h:58
#define av_clip
Definition: common.h:122
#define av_clip_uint8
Definition: common.h:128
#define av_clip_uintp2
Definition: common.h:146
#define av_clipf
Definition: common.h:170
#define NULL
Definition: coverity.c:32
void av_expr_free(AVExpr *e)
Free a parsed expression previously created with av_expr_parse().
Definition: eval.c:336
double av_expr_eval(AVExpr *e, const double *const_values, void *opaque)
Evaluate a previously parsed expression.
Definition: eval.c:766
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
simple arithmetic expression evaluator
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:587
AVFilterFormats * ff_make_format_list(const int *fmts)
Create a list of supported formats.
Definition: formats.c:286
@ AV_OPT_TYPE_STRING
Definition: opt.h:229
#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
#define AVERROR(e)
Definition: error.h:43
int av_frame_is_writable(AVFrame *frame)
Check if the frame data is writable.
Definition: frame.c:594
void av_frame_free(AVFrame **frame)
Free the frame and any dynamically allocated objects in it, e.g.
Definition: frame.c:203
int av_frame_copy_props(AVFrame *dst, const AVFrame *src)
Copy only "metadata" fields from src to dst.
Definition: frame.c:658
#define AV_LOG_DEBUG
Stuff which is only useful for libav* developers.
Definition: log.h:215
#define AV_LOG_WARNING
Something somehow does not look correct.
Definition: log.h:200
#define AV_LOG_VERBOSE
Detailed information.
Definition: log.h:210
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:194
static double av_q2d(AVRational a)
Convert an AVRational to a double.
Definition: rational.h:104
char * av_strdup(const char *s)
Duplicate a string.
Definition: mem.c:253
@ AVMEDIA_TYPE_VIDEO
Definition: avutil.h:201
void av_image_copy_plane(uint8_t *dst, int dst_linesize, const uint8_t *src, int src_linesize, int bytewidth, int height)
Copy image plane from src to dst.
Definition: imgutils.c:373
misc image utilities
int i
Definition: input.c:407
static void direct(const float *in, const FFTComplex *ir, int len, float *out)
Definition: af_afir.c:60
#define TS2D(ts)
Definition: internal.h:208
#define TS2T(ts, tb)
Definition: internal.h:209
common internal API header
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification.
Definition: internal.h:117
option
Definition: libkvazaar.c:325
static enum AVPixelFormat pix_fmts[]
Definition: libkvazaar.c:309
const char * desc
Definition: libsvtav1.c:79
uint8_t w
Definition: llviddspenc.c:39
#define NAN
Definition: mathematics.h:64
#define M_PI
Definition: mathematics.h:52
unsigned bps
Definition: movenc.c:1612
AVOptions.
const AVPixFmtDescriptor * av_pix_fmt_desc_get(enum AVPixelFormat pix_fmt)
Definition: pixdesc.c:2573
#define AV_PIX_FMT_YUV420P10
Definition: pixfmt.h:399
#define AV_PIX_FMT_YUVA444P10
Definition: pixfmt.h:438
#define AV_PIX_FMT_YUVA420P10
Definition: pixfmt.h:436
#define AV_PIX_FMT_YUV422P10
Definition: pixfmt.h:400
#define AV_PIX_FMT_YUVA422P10
Definition: pixfmt.h:437
AVPixelFormat
Pixel format.
Definition: pixfmt.h:64
@ AV_PIX_FMT_NONE
Definition: pixfmt.h:65
@ AV_PIX_FMT_YUV420P
planar YUV 4:2:0, 12bpp, (1 Cr & Cb sample per 2x2 Y samples)
Definition: pixfmt.h:66
@ AV_PIX_FMT_YUV440P
planar YUV 4:4:0 (1 Cr & Cb sample per 1x2 Y samples)
Definition: pixfmt.h:99
@ AV_PIX_FMT_YUV422P
planar YUV 4:2:2, 16bpp, (1 Cr & Cb sample per 2x1 Y samples)
Definition: pixfmt.h:70
@ AV_PIX_FMT_YUVA420P
planar YUV 4:2:0, 20bpp, (1 Cr & Cb sample per 2x2 Y & A samples)
Definition: pixfmt.h:101
@ AV_PIX_FMT_YUV410P
planar YUV 4:1:0, 9bpp, (1 Cr & Cb sample per 4x4 Y samples)
Definition: pixfmt.h:72
@ AV_PIX_FMT_YUV411P
planar YUV 4:1:1, 12bpp, (1 Cr & Cb sample per 4x1 Y samples)
Definition: pixfmt.h:73
@ AV_PIX_FMT_YUV444P
planar YUV 4:4:4, 24bpp, (1 Cr & Cb sample per 1x1 Y samples)
Definition: pixfmt.h:71
@ AV_PIX_FMT_YUVA444P
planar YUV 4:4:4 32bpp, (1 Cr & Cb sample per 1x1 Y & A samples)
Definition: pixfmt.h:177
@ AV_PIX_FMT_YUVA422P
planar YUV 4:2:2 24bpp, (1 Cr & Cb sample per 2x1 Y & A samples)
Definition: pixfmt.h:176
#define AV_PIX_FMT_YUV440P10
Definition: pixfmt.h:401
#define AV_PIX_FMT_YUV444P10
Definition: pixfmt.h:402
var_name
Definition: setts_bsf.c:50
Describe the class of an AVClass context structure.
Definition: log.h:67
Definition: eval.c:157
An instance of a filter.
Definition: avfilter.h:341
void * priv
private data for use by the filter
Definition: avfilter.h:356
AVFilterLink ** outputs
array of pointers to output links
Definition: avfilter.h:353
A list of supported formats for one end of a filter link.
Definition: formats.h:65
A filter pad used for either input or output.
Definition: internal.h:54
const char * name
Pad name.
Definition: internal.h:60
Filter definition.
Definition: avfilter.h:145
const char * name
Filter name.
Definition: avfilter.h:149
This structure describes decoded (raw) audio or video data.
Definition: frame.h:318
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
Definition: frame.h:332
int linesize[AV_NUM_DATA_POINTERS]
For video, size in bytes of each picture line.
Definition: frame.h:349
AVOption.
Definition: opt.h:248
Descriptor that unambiguously describes how the bits of a pixel are stored in the up to 4 data planes...
Definition: pixdesc.h:81
int num
Numerator.
Definition: rational.h:59
int den
Denominator.
Definition: rational.h:60
int vsub
Definition: vf_hue.c:75
float hue
Definition: vf_hue.c:63
int hsub
Definition: vf_hue.c:74
uint16_t lut_v10[1024][1024]
Definition: vf_hue.c:85
int is_first
Definition: vf_hue.c:76
double var_values[VAR_NB]
Definition: vf_hue.c:79
AVExpr * brightness_pexpr
Definition: vf_hue.c:73
AVExpr * saturation_pexpr
Definition: vf_hue.c:70
char * brightness_expr
Definition: vf_hue.c:72
uint16_t lut_u10[1024][1024]
Definition: vf_hue.c:84
uint8_t lut_v[256][256]
Definition: vf_hue.c:82
char * hue_deg_expr
Definition: vf_hue.c:64
char * saturation_expr
Definition: vf_hue.c:69
char * hue_expr
Definition: vf_hue.c:65
float hue_deg
Definition: vf_hue.c:62
int32_t hue_sin
Definition: vf_hue.c:77
int32_t hue_cos
Definition: vf_hue.c:78
AVExpr * hue_deg_pexpr
Definition: vf_hue.c:66
float saturation
Definition: vf_hue.c:68
uint16_t lut_l16[65536]
Definition: vf_hue.c:83
AVExpr * hue_pexpr
Definition: vf_hue.c:67
uint8_t lut_l[256]
Definition: vf_hue.c:80
uint8_t lut_u[256][256]
Definition: vf_hue.c:81
float brightness
Definition: vf_hue.c:71
#define lrint
Definition: tablegen.h:53
#define av_free(p)
#define av_freep(p)
#define av_log(a,...)
AVFormatContext * ctx
Definition: movenc.c:48
const char * b
Definition: vf_curves.c:118
@ VAR_PTS
Definition: vf_hue.c:53
@ VAR_TB
Definition: vf_hue.c:56
@ VAR_N
Definition: vf_hue.c:52
@ VAR_NB
Definition: vf_hue.c:57
@ VAR_R
Definition: vf_hue.c:54
@ VAR_T
Definition: vf_hue.c:55
static void create_luma_lut(HueContext *h)
Definition: vf_hue.c:115
static const AVOption hue_options[]
Definition: vf_hue.c:90
static void apply_lut(HueContext *s, uint8_t *udst, uint8_t *vdst, const int dst_linesize, uint8_t *usrc, uint8_t *vsrc, const int src_linesize, int w, int h)
Definition: vf_hue.c:320
#define SAT_MAX_VAL
Definition: vf_hue.c:40
static const AVFilterPad hue_outputs[]
Definition: vf_hue.c:511
static void apply_lut10(HueContext *s, uint16_t *udst, uint16_t *vdst, const int dst_linesize, uint16_t *usrc, uint16_t *vsrc, const int src_linesize, int w, int h)
Definition: vf_hue.c:343
static int filter_frame(AVFilterLink *inlink, AVFrame *inpic)
Definition: vf_hue.c:366
#define SAT_MIN_VAL
Definition: vf_hue.c:39
static void compute_sin_and_cos(HueContext *hue)
Definition: vf_hue.c:104
static int query_formats(AVFilterContext *ctx)
Definition: vf_hue.c:251
AVFILTER_DEFINE_CLASS(hue)
#define FLAGS
Definition: vf_hue.c:89
static void apply_luma_lut10(HueContext *s, uint16_t *ldst, const int dst_linesize, uint16_t *lsrc, const int src_linesize, int w, int h)
Definition: vf_hue.c:304
static int set_expr(AVExpr **pexpr_ptr, char **expr_ptr, const char *expr, const char *option, void *log_ctx)
Definition: vf_hue.c:178
AVFilter ff_vf_hue
Definition: vf_hue.c:519
static const AVFilterPad hue_inputs[]
Definition: vf_hue.c:501
static int config_props(AVFilterLink *inlink)
Definition: vf_hue.c:272
static const char *const var_names[]
Definition: vf_hue.c:42
static int process_command(AVFilterContext *ctx, const char *cmd, const char *args, char *res, int res_len, int flags)
Definition: vf_hue.c:471
static av_cold int init(AVFilterContext *ctx)
Definition: vf_hue.c:207
static av_cold void uninit(AVFilterContext *ctx)
Definition: vf_hue.c:241
static void apply_luma_lut(HueContext *s, uint8_t *ldst, const int dst_linesize, uint8_t *lsrc, const int src_linesize, int w, int h)
Definition: vf_hue.c:288
#define OFFSET(x)
Definition: vf_hue.c:88
static void create_chrominance_lut(HueContext *h, const int32_t c, const int32_t s)
Definition: vf_hue.c:128
#define SET_EXPR(expr, option)
av_frame_free & inpic
Definition: vf_mcdeint.c:281
AVFrame * ff_get_video_buffer(AVFilterLink *link, int w, int h)
Request a picture buffer with a specific set of permissions.
Definition: video.c:104
static double c[64]