FFmpeg
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 {
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 
251 static const enum AVPixelFormat pix_fmts[] = {
263 };
264 
266 {
267  HueContext *hue = inlink->dst->priv;
269 
270  hue->hsub = desc->log2_chroma_w;
271  hue->vsub = desc->log2_chroma_h;
272 
273  hue->var_values[VAR_N] = 0;
274  hue->var_values[VAR_TB] = av_q2d(inlink->time_base);
275  hue->var_values[VAR_R] = inlink->frame_rate.num == 0 || inlink->frame_rate.den == 0 ?
276  NAN : av_q2d(inlink->frame_rate);
277 
278  return 0;
279 }
280 
282  uint8_t *ldst, const int dst_linesize,
283  uint8_t *lsrc, const int src_linesize,
284  int w, int h)
285 {
286  int i;
287 
288  while (h--) {
289  for (i = 0; i < w; i++)
290  ldst[i] = s->lut_l[lsrc[i]];
291 
292  lsrc += src_linesize;
293  ldst += dst_linesize;
294  }
295 }
296 
298  uint16_t *ldst, const int dst_linesize,
299  uint16_t *lsrc, const int src_linesize,
300  int w, int h)
301 {
302  int i;
303 
304  while (h--) {
305  for (i = 0; i < w; i++)
306  ldst[i] = s->lut_l16[lsrc[i]];
307 
308  lsrc += src_linesize;
309  ldst += dst_linesize;
310  }
311 }
312 
313 static void apply_lut(HueContext *s,
314  uint8_t *udst, uint8_t *vdst, const int dst_linesize,
315  uint8_t *usrc, uint8_t *vsrc, const int src_linesize,
316  int w, int h)
317 {
318  int i;
319 
320  while (h--) {
321  for (i = 0; i < w; i++) {
322  const int u = usrc[i];
323  const int v = vsrc[i];
324 
325  udst[i] = s->lut_u[u][v];
326  vdst[i] = s->lut_v[u][v];
327  }
328 
329  usrc += src_linesize;
330  vsrc += src_linesize;
331  udst += dst_linesize;
332  vdst += dst_linesize;
333  }
334 }
335 
336 static void apply_lut10(HueContext *s,
337  uint16_t *udst, uint16_t *vdst, const int dst_linesize,
338  uint16_t *usrc, uint16_t *vsrc, const int src_linesize,
339  int w, int h)
340 {
341  int i;
342 
343  while (h--) {
344  for (i = 0; i < w; i++) {
345  const int u = av_clip_uintp2(usrc[i], 10);
346  const int v = av_clip_uintp2(vsrc[i], 10);
347 
348  udst[i] = s->lut_u10[u][v];
349  vdst[i] = s->lut_v10[u][v];
350  }
351 
352  usrc += src_linesize;
353  vsrc += src_linesize;
354  udst += dst_linesize;
355  vdst += dst_linesize;
356  }
357 }
358 
360 {
361  HueContext *hue = inlink->dst->priv;
362  AVFilterLink *outlink = inlink->dst->outputs[0];
363  AVFrame *outpic;
364  const int32_t old_hue_sin = hue->hue_sin, old_hue_cos = hue->hue_cos;
365  const float old_brightness = hue->brightness;
366  int direct = 0;
368  const int bps = desc->comp[0].depth > 8 ? 2 : 1;
369 
371  direct = 1;
372  outpic = inpic;
373  } else {
374  outpic = ff_get_video_buffer(outlink, outlink->w, outlink->h);
375  if (!outpic) {
377  return AVERROR(ENOMEM);
378  }
379  av_frame_copy_props(outpic, inpic);
380  }
381 
382  hue->var_values[VAR_N] = inlink->frame_count_out;
383  hue->var_values[VAR_T] = TS2T(inpic->pts, inlink->time_base);
384  hue->var_values[VAR_PTS] = TS2D(inpic->pts);
385 
386  if (hue->saturation_expr) {
388 
389  if (hue->saturation < SAT_MIN_VAL || hue->saturation > SAT_MAX_VAL) {
392  "Saturation value not in range [%d,%d]: clipping value to %0.1f\n",
394  }
395  }
396 
397  if (hue->brightness_expr) {
399 
400  if (hue->brightness < -10 || hue->brightness > 10) {
401  hue->brightness = av_clipf(hue->brightness, -10, 10);
403  "Brightness value not in range [%d,%d]: clipping value to %0.1f\n",
404  -10, 10, hue->brightness);
405  }
406  }
407 
408  if (hue->hue_deg_expr) {
409  hue->hue_deg = av_expr_eval(hue->hue_deg_pexpr, hue->var_values, NULL);
410  hue->hue = hue->hue_deg * M_PI / 180;
411  } else if (hue->hue_expr) {
412  hue->hue = av_expr_eval(hue->hue_pexpr, hue->var_values, NULL);
413  hue->hue_deg = hue->hue * 180 / M_PI;
414  }
415 
416  av_log(inlink->dst, AV_LOG_DEBUG,
417  "H:%0.1f*PI h:%0.1f s:%0.1f b:%0.f t:%0.1f n:%d\n",
418  hue->hue/M_PI, hue->hue_deg, hue->saturation, hue->brightness,
419  hue->var_values[VAR_T], (int)hue->var_values[VAR_N]);
420 
421  compute_sin_and_cos(hue);
422  if (hue->is_first || (old_hue_sin != hue->hue_sin || old_hue_cos != hue->hue_cos))
423  create_chrominance_lut(hue, hue->hue_cos, hue->hue_sin);
424 
425  if (hue->is_first || (old_brightness != hue->brightness && hue->brightness))
426  create_luma_lut(hue);
427 
428  if (!direct) {
429  if (!hue->brightness)
430  av_image_copy_plane(outpic->data[0], outpic->linesize[0],
431  inpic->data[0], inpic->linesize[0],
432  inlink->w * bps, inlink->h);
433  if (inpic->data[3])
434  av_image_copy_plane(outpic->data[3], outpic->linesize[3],
435  inpic->data[3], inpic->linesize[3],
436  inlink->w * bps, inlink->h);
437  }
438 
439  if (bps > 1) {
440  apply_lut10(hue, (uint16_t*)outpic->data[1], (uint16_t*)outpic->data[2], outpic->linesize[1]/2,
441  (uint16_t*) inpic->data[1], (uint16_t*) inpic->data[2], inpic->linesize[1]/2,
442  AV_CEIL_RSHIFT(inlink->w, hue->hsub),
443  AV_CEIL_RSHIFT(inlink->h, hue->vsub));
444  if (hue->brightness)
445  apply_luma_lut10(hue, (uint16_t*)outpic->data[0], outpic->linesize[0]/2,
446  (uint16_t*) inpic->data[0], inpic->linesize[0]/2, inlink->w, inlink->h);
447  } else {
448  apply_lut(hue, outpic->data[1], outpic->data[2], outpic->linesize[1],
449  inpic->data[1], inpic->data[2], inpic->linesize[1],
450  AV_CEIL_RSHIFT(inlink->w, hue->hsub),
451  AV_CEIL_RSHIFT(inlink->h, hue->vsub));
452  if (hue->brightness)
453  apply_luma_lut(hue, outpic->data[0], outpic->linesize[0],
454  inpic->data[0], inpic->linesize[0], inlink->w, inlink->h);
455  }
456 
457  if (!direct)
459 
460  hue->is_first = 0;
461  return ff_filter_frame(outlink, outpic);
462 }
463 
464 static int process_command(AVFilterContext *ctx, const char *cmd, const char *args,
465  char *res, int res_len, int flags)
466 {
467  HueContext *hue = ctx->priv;
468  int ret;
469 
470 #define SET_EXPR(expr, option) \
471  do { \
472  ret = set_expr(&hue->expr##_pexpr, &hue->expr##_expr, \
473  args, option, ctx); \
474  if (ret < 0) \
475  return ret; \
476  } while (0)
477 
478  if (!strcmp(cmd, "h")) {
479  SET_EXPR(hue_deg, "h");
480  av_freep(&hue->hue_expr);
481  } else if (!strcmp(cmd, "H")) {
482  SET_EXPR(hue, "H");
483  av_freep(&hue->hue_deg_expr);
484  } else if (!strcmp(cmd, "s")) {
485  SET_EXPR(saturation, "s");
486  } else if (!strcmp(cmd, "b")) {
487  SET_EXPR(brightness, "b");
488  } else
489  return AVERROR(ENOSYS);
490 
491  return 0;
492 }
493 
494 static const AVFilterPad hue_inputs[] = {
495  {
496  .name = "default",
497  .type = AVMEDIA_TYPE_VIDEO,
498  .filter_frame = filter_frame,
499  .config_props = config_props,
500  },
501 };
502 
503 static const AVFilterPad hue_outputs[] = {
504  {
505  .name = "default",
506  .type = AVMEDIA_TYPE_VIDEO,
507  },
508 };
509 
511  .name = "hue",
512  .description = NULL_IF_CONFIG_SMALL("Adjust the hue and saturation of the input video."),
513  .priv_size = sizeof(HueContext),
514  .init = init,
515  .uninit = uninit,
520  .priv_class = &hue_class,
522 };
HueContext::hue_expr
char * hue_expr
Definition: vf_hue.c:65
FLAGS
#define FLAGS
Definition: vf_hue.c:89
HueContext::saturation_expr
char * saturation_expr
Definition: vf_hue.c:69
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:98
AV_LOG_WARNING
#define AV_LOG_WARNING
Something somehow does not look correct.
Definition: log.h:186
HueContext::hue_cos
int32_t hue_cos
Definition: vf_hue.c:78
direct
static void direct(const float *in, const FFTComplex *ir, int len, float *out)
Definition: af_afir.c:61
AVPixelFormat
AVPixelFormat
Pixel format.
Definition: pixfmt.h:64
HueContext::hue_sin
int32_t hue_sin
Definition: vf_hue.c:77
HueContext::var_values
double var_values[VAR_NB]
Definition: vf_hue.c:79
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
u
#define u(width, name, range_min, range_max)
Definition: cbs_h2645.c:264
HueContext::vsub
int vsub
Definition: vf_hue.c:75
ff_filter_frame
int ff_filter_frame(AVFilterLink *link, AVFrame *frame)
Send a frame of data to the next filter.
Definition: avfilter.c:1018
av_pix_fmt_desc_get
const AVPixFmtDescriptor * av_pix_fmt_desc_get(enum AVPixelFormat pix_fmt)
Definition: pixdesc.c:2564
av_clip_uintp2
#define av_clip_uintp2
Definition: common.h:120
FILTER_PIXFMTS_ARRAY
#define FILTER_PIXFMTS_ARRAY(array)
Definition: internal.h:171
compute_sin_and_cos
static void compute_sin_and_cos(HueContext *hue)
Definition: vf_hue.c:104
HueContext::hue_deg_expr
char * hue_deg_expr
Definition: vf_hue.c:64
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
w
uint8_t w
Definition: llviddspenc.c:38
AV_PIX_FMT_YUVA420P10
#define AV_PIX_FMT_YUVA420P10
Definition: pixfmt.h:428
AVOption
AVOption.
Definition: opt.h:247
b
#define b
Definition: input.c:40
AV_PIX_FMT_YUV420P10
#define AV_PIX_FMT_YUV420P10
Definition: pixfmt.h:391
AV_LOG_VERBOSE
#define AV_LOG_VERBOSE
Detailed information.
Definition: log.h:196
float.h
AV_PIX_FMT_YUV440P
@ AV_PIX_FMT_YUV440P
planar YUV 4:4:0 (1 Cr & Cb sample per 1x2 Y samples)
Definition: pixfmt.h:99
AVFilter::name
const char * name
Filter name.
Definition: avfilter.h:153
apply_luma_lut10
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:297
video.h
AV_PIX_FMT_YUVA422P10
#define AV_PIX_FMT_YUVA422P10
Definition: pixfmt.h:429
hue_inputs
static const AVFilterPad hue_inputs[]
Definition: vf_hue.c:494
AVFrame::data
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
Definition: frame.h:317
av_image_copy_plane
void av_image_copy_plane(uint8_t *dst, int dst_linesize, const uint8_t *src, int src_linesize, int bytewidth, int height)
Copy image plane from src to dst.
Definition: imgutils.c:374
HueContext::saturation_pexpr
AVExpr * saturation_pexpr
Definition: vf_hue.c:70
process_command
static int process_command(AVFilterContext *ctx, const char *cmd, const char *args, char *res, int res_len, int flags)
Definition: vf_hue.c:464
formats.h
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
create_chrominance_lut
static void create_chrominance_lut(HueContext *h, const int32_t c, const int32_t s)
Definition: vf_hue.c:128
SET_EXPR
#define SET_EXPR(expr, option)
filter_frame
static int filter_frame(AVFilterLink *inlink, AVFrame *inpic)
Definition: vf_hue.c:359
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:50
HueContext::hue_deg_pexpr
AVExpr * hue_deg_pexpr
Definition: vf_hue.c:66
AV_PIX_FMT_YUV444P10
#define AV_PIX_FMT_YUV444P10
Definition: pixfmt.h:394
lrint
#define lrint
Definition: tablegen.h:53
TS2T
#define TS2T(ts, tb)
Definition: internal.h:264
AV_LOG_ERROR
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:180
ff_vf_hue
const AVFilter ff_vf_hue
Definition: vf_hue.c:510
av_cold
#define av_cold
Definition: attributes.h:90
SAT_MIN_VAL
#define SAT_MIN_VAL
Definition: vf_hue.c:39
init
static av_cold int init(AVFilterContext *ctx)
Definition: vf_hue.c:207
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_TB
@ VAR_TB
Definition: vf_hue.c:56
AV_CEIL_RSHIFT
#define AV_CEIL_RSHIFT(a, b)
Definition: common.h:51
HueContext
Definition: vf_hue.c:60
av_q2d
static double av_q2d(AVRational a)
Convert an AVRational to a double.
Definition: rational.h:104
HueContext::hue
float hue
Definition: vf_hue.c:63
create_luma_lut
static void create_luma_lut(HueContext *h)
Definition: vf_hue.c:115
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_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
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
HueContext::hsub
int hsub
Definition: vf_hue.c:74
NAN
#define NAN
Definition: mathematics.h:64
FILTER_INPUTS
#define FILTER_INPUTS(array)
Definition: internal.h:191
option
option
Definition: libkvazaar.c:306
AVClass
Describe the class of an AVClass context structure.
Definition: log.h:66
TS2D
#define TS2D(ts)
Definition: internal.h:263
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
inpic
av_frame_free & inpic
Definition: vf_mcdeint.c:270
apply_lut
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:313
av_clipf
#define av_clipf
Definition: common.h:144
pix_fmts
static enum AVPixelFormat pix_fmts[]
Definition: vf_hue.c:251
apply_lut10
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:336
HueContext::lut_v10
uint16_t lut_v10[1024][1024]
Definition: vf_hue.c:85
AV_PIX_FMT_YUV440P10
#define AV_PIX_FMT_YUV440P10
Definition: pixfmt.h:393
AV_PIX_FMT_YUV422P10
#define AV_PIX_FMT_YUV422P10
Definition: pixfmt.h:392
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
HueContext::hue_deg
float hue_deg
Definition: vf_hue.c:62
NULL_IF_CONFIG_SMALL
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification.
Definition: internal.h:117
bps
unsigned bps
Definition: movenc.c:1596
HueContext::hue_pexpr
AVExpr * hue_pexpr
Definition: vf_hue.c:67
av_frame_is_writable
int av_frame_is_writable(AVFrame *frame)
Check if the frame data is writable.
Definition: frame.c:473
uninit
static av_cold void uninit(AVFilterContext *ctx)
Definition: vf_hue.c:241
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_YUVA444P10
#define AV_PIX_FMT_YUVA444P10
Definition: pixfmt.h:430
M_PI
#define M_PI
Definition: mathematics.h:52
AVFILTER_DEFINE_CLASS
AVFILTER_DEFINE_CLASS(hue)
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:130
HueContext::lut_l
uint8_t lut_l[256]
Definition: vf_hue.c:80
HueContext::brightness
float brightness
Definition: vf_hue.c:71
i
#define i(width, name, range_min, range_max)
Definition: cbs_h2645.c:271
OFFSET
#define OFFSET(x)
Definition: vf_hue.c:88
VAR_PTS
@ VAR_PTS
Definition: vf_hue.c:53
HueContext::lut_u10
uint16_t lut_u10[1024][1024]
Definition: vf_hue.c:84
AVFilterPad::name
const char * name
Pad name.
Definition: internal.h:56
HueContext::lut_l16
uint16_t lut_l16[65536]
Definition: vf_hue.c:83
AVFilter
Filter definition.
Definition: avfilter.h:149
ret
ret
Definition: filter_design.txt:187
hue_options
static const AVOption hue_options[]
Definition: vf_hue.c:90
VAR_T
@ VAR_T
Definition: vf_hue.c:55
set_expr
static int set_expr(AVExpr **pexpr_ptr, char **expr_ptr, const char *expr, const char *option, void *log_ctx)
Definition: vf_hue.c:178
var_names
static const char *const var_names[]
Definition: vf_hue.c:42
AV_PIX_FMT_NONE
@ AV_PIX_FMT_NONE
Definition: pixfmt.h:65
avfilter.h
HueContext::saturation
float saturation
Definition: vf_hue.c:68
HueContext::brightness_pexpr
AVExpr * brightness_pexpr
Definition: vf_hue.c:73
av_clip_uint8
#define av_clip_uint8
Definition: common.h:102
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:386
HueContext::is_first
int is_first
Definition: vf_hue.c:76
VAR_N
@ VAR_N
Definition: vf_hue.c:52
av_strdup
char * av_strdup(const char *s)
Duplicate a string.
Definition: mem.c:279
desc
const char * desc
Definition: libsvtav1.c:79
AVMEDIA_TYPE_VIDEO
@ AVMEDIA_TYPE_VIDEO
Definition: avutil.h:201
AV_PIX_FMT_YUV422P
@ AV_PIX_FMT_YUV422P
planar YUV 4:2:2, 16bpp, (1 Cr & Cb sample per 2x1 Y samples)
Definition: pixfmt.h:70
AVPixFmtDescriptor
Descriptor that unambiguously describes how the bits of a pixel are stored in the up to 4 data planes...
Definition: pixdesc.h:69
HueContext::lut_u
uint8_t lut_u[256][256]
Definition: vf_hue.c:81
av_free
#define av_free(p)
Definition: tableprint_vlc.h:34
config_props
static int config_props(AVFilterLink *inlink)
Definition: vf_hue.c:265
FILTER_OUTPUTS
#define FILTER_OUTPUTS(array)
Definition: internal.h:192
av_freep
#define av_freep(p)
Definition: tableprint_vlc.h:35
AV_PIX_FMT_YUV411P
@ AV_PIX_FMT_YUV411P
planar YUV 4:1:1, 12bpp, (1 Cr & Cb sample per 4x1 Y samples)
Definition: pixfmt.h:73
hue_outputs
static const AVFilterPad hue_outputs[]
Definition: vf_hue.c:503
HueContext::brightness_expr
char * brightness_expr
Definition: vf_hue.c:72
int32_t
int32_t
Definition: audioconvert.c:56
VAR_NB
@ VAR_NB
Definition: vf_hue.c:57
imgutils.h
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_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
SAT_MAX_VAL
#define SAT_MAX_VAL
Definition: vf_hue.c:40
h
h
Definition: vp9dsp_template.c:2038
AV_OPT_TYPE_STRING
@ AV_OPT_TYPE_STRING
Definition: opt.h:228
VAR_R
@ VAR_R
Definition: vf_hue.c:54
apply_luma_lut
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:281
AV_PIX_FMT_YUVA422P
@ AV_PIX_FMT_YUVA422P
planar YUV 4:2:2 24bpp, (1 Cr & Cb sample per 2x1 Y & A samples)
Definition: pixfmt.h:166
HueContext::lut_v
uint8_t lut_v[256][256]
Definition: vf_hue.c:82