FFmpeg
 All Data Structures Namespaces Files Functions Variables Typedefs Enumerations Enumerator Macros Groups Pages
vf_selectivecolor.c
Go to the documentation of this file.
1 /*
2  * Copyright (c) 2015-2016 Clément Bœsch <u pkh me>
3  *
4  * This file is part of FFmpeg.
5  *
6  * FFmpeg is free software; you can redistribute it and/or
7  * modify it under the terms of the GNU Lesser General Public
8  * License as published by the Free Software Foundation; either
9  * version 2.1 of the License, or (at your option) any later version.
10  *
11  * FFmpeg is distributed in the hope that it will be useful,
12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14  * Lesser General Public License for more details.
15  *
16  * You should have received a copy of the GNU Lesser General Public
17  * License along with FFmpeg; if not, write to the Free Software
18  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19  */
20 
21 /**
22  * @see http://blog.pkh.me/p/22-understanding-selective-coloring-in-adobe-photoshop.html
23  * @todo
24  * - use integers so it can be made bitexact and a FATE test can be added
25  */
26 
27 #include "libavutil/avassert.h"
28 #include "libavutil/file.h"
29 #include "libavutil/intreadwrite.h"
30 #include "libavutil/opt.h"
31 #include "libavutil/pixdesc.h"
32 #include "libavcodec/mathops.h" // for mid_pred(), which is a macro so no link dependency
33 #include "avfilter.h"
34 #include "drawutils.h"
35 #include "formats.h"
36 #include "internal.h"
37 #include "video.h"
38 
39 #define R 0
40 #define G 1
41 #define B 2
42 #define A 3
43 
45  // WARNING: do NOT reorder (see parse_psfile())
56 };
57 
62 };
63 
64 static const char *color_names[NB_RANGES] = {
65  "red", "yellow", "green", "cyan", "blue", "magenta", "white", "neutral", "black"
66 };
67 
68 typedef int (*get_range_scale_func)(int r, int g, int b, int min_val, int max_val);
69 
70 struct process_range {
71  int range_id;
72  uint32_t mask;
74 };
75 
76 typedef struct ThreadData {
77  AVFrame *in, *out;
78 } ThreadData;
79 
80 typedef struct SelectiveColorContext {
81  const AVClass *class;
85  struct process_range process_ranges[NB_RANGES]; // color ranges to process
87  char *psfile;
89  int is_16bit;
90  int step;
92 
93 #define OFFSET(x) offsetof(SelectiveColorContext, x)
94 #define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM
95 #define RANGE_OPTION(color_name, range) \
96  { color_name"s", "adjust "color_name" regions", OFFSET(opt_cmyk_adjust[range]), AV_OPT_TYPE_STRING, {.str=NULL}, CHAR_MIN, CHAR_MAX, FLAGS }
97 
98 static const AVOption selectivecolor_options[] = {
99  { "correction_method", "select correction method", OFFSET(correction_method), AV_OPT_TYPE_INT, {.i64 = CORRECTION_METHOD_ABSOLUTE}, 0, NB_CORRECTION_METHODS-1, FLAGS, "correction_method" },
100  { "absolute", NULL, 0, AV_OPT_TYPE_CONST, {.i64=CORRECTION_METHOD_ABSOLUTE}, INT_MIN, INT_MAX, FLAGS, "correction_method" },
101  { "relative", NULL, 0, AV_OPT_TYPE_CONST, {.i64=CORRECTION_METHOD_RELATIVE}, INT_MIN, INT_MAX, FLAGS, "correction_method" },
102  RANGE_OPTION("red", RANGE_REDS),
103  RANGE_OPTION("yellow", RANGE_YELLOWS),
104  RANGE_OPTION("green", RANGE_GREENS),
105  RANGE_OPTION("cyan", RANGE_CYANS),
106  RANGE_OPTION("blue", RANGE_BLUES),
107  RANGE_OPTION("magenta", RANGE_MAGENTAS),
108  RANGE_OPTION("white", RANGE_WHITES),
109  RANGE_OPTION("neutral", RANGE_NEUTRALS),
110  RANGE_OPTION("black", RANGE_BLACKS),
111  { "psfile", "set Photoshop selectivecolor file name", OFFSET(psfile), AV_OPT_TYPE_STRING, {.str=NULL}, .flags = FLAGS },
112  { NULL }
113 };
114 
115 AVFILTER_DEFINE_CLASS(selectivecolor);
116 
117 static int get_rgb_scale(int r, int g, int b, int min_val, int max_val)
118 {
119  return max_val - mid_pred(r, g, b);
120 }
121 
122 static int get_cmy_scale(int r, int g, int b, int min_val, int max_val)
123 {
124  return mid_pred(r, g, b) - min_val;
125 }
126 
127 #define DECLARE_RANGE_SCALE_FUNCS(nbits) \
128 static int get_neutrals_scale##nbits(int r, int g, int b, int min_val, int max_val) \
129 { \
130  /* 1 - (|max-0.5| + |min-0.5|) */ \
131  return (((1<<nbits)-1)*2 - ( abs((max_val<<1) - ((1<<nbits)-1)) \
132  + abs((min_val<<1) - ((1<<nbits)-1))) + 1) >> 1; \
133 } \
134  \
135 static int get_whites_scale##nbits(int r, int g, int b, int min_val, int max_val) \
136 { \
137  /* (min - 0.5) * 2 */ \
138  return (min_val<<1) - ((1<<nbits)-1); \
139 } \
140  \
141 static int get_blacks_scale##nbits(int r, int g, int b, int min_val, int max_val) \
142 { \
143  /* (0.5 - max) * 2 */ \
144  return ((1<<nbits)-1) - (max_val<<1); \
145 } \
146 
149 
151 {
152  const float *cmyk = s->cmyk_adjust[range_id];
153 
154  /* If the color range has user settings, register the color range
155  * as "to be processed" */
156  if (cmyk[0] || cmyk[1] || cmyk[2] || cmyk[3]) {
157  struct process_range *pr = &s->process_ranges[s->nb_process_ranges++];
158 
159  if (cmyk[0] < -1.0 || cmyk[0] > 1.0 ||
160  cmyk[1] < -1.0 || cmyk[1] > 1.0 ||
161  cmyk[2] < -1.0 || cmyk[2] > 1.0 ||
162  cmyk[3] < -1.0 || cmyk[3] > 1.0) {
163  av_log(s, AV_LOG_ERROR, "Invalid %s adjustments (%g %g %g %g). "
164  "Settings must be set in [-1;1] range\n",
165  color_names[range_id], cmyk[0], cmyk[1], cmyk[2], cmyk[3]);
166  return AVERROR(EINVAL);
167  }
168 
169  pr->range_id = range_id;
170  pr->mask = 1 << range_id;
171  if (pr->mask & (1<<RANGE_REDS | 1<<RANGE_GREENS | 1<<RANGE_BLUES)) pr->get_scale = get_rgb_scale;
172  else if (pr->mask & (1<<RANGE_CYANS | 1<<RANGE_MAGENTAS | 1<<RANGE_YELLOWS)) pr->get_scale = get_cmy_scale;
173  else if (!s->is_16bit && (pr->mask & 1<<RANGE_WHITES)) pr->get_scale = get_whites_scale8;
174  else if (!s->is_16bit && (pr->mask & 1<<RANGE_NEUTRALS)) pr->get_scale = get_neutrals_scale8;
175  else if (!s->is_16bit && (pr->mask & 1<<RANGE_BLACKS)) pr->get_scale = get_blacks_scale8;
176  else if ( s->is_16bit && (pr->mask & 1<<RANGE_WHITES)) pr->get_scale = get_whites_scale16;
177  else if ( s->is_16bit && (pr->mask & 1<<RANGE_NEUTRALS)) pr->get_scale = get_neutrals_scale16;
178  else if ( s->is_16bit && (pr->mask & 1<<RANGE_BLACKS)) pr->get_scale = get_blacks_scale16;
179  else
180  av_assert0(0);
181  }
182  return 0;
183 }
184 
185 static int parse_psfile(AVFilterContext *ctx, const char *fname)
186 {
187  int16_t val;
188  int ret, i, version;
189  uint8_t *buf;
190  size_t size;
191  SelectiveColorContext *s = ctx->priv;
192 
193  ret = av_file_map(fname, &buf, &size, 0, NULL);
194  if (ret < 0)
195  return ret;
196 
197 #define READ16(dst) do { \
198  if (size < 2) { \
199  ret = AVERROR_INVALIDDATA; \
200  goto end; \
201  } \
202  dst = AV_RB16(buf); \
203  buf += 2; \
204  size -= 2; \
205 } while (0)
206 
207  READ16(version);
208  if (version != 1)
209  av_log(s, AV_LOG_WARNING, "Unsupported selective color file version %d, "
210  "the settings might not be loaded properly\n", version);
211 
213 
214  // 1st CMYK entry is reserved/unused
215  for (i = 0; i < FF_ARRAY_ELEMS(s->cmyk_adjust[0]); i++) {
216  READ16(val);
217  if (val)
218  av_log(s, AV_LOG_WARNING, "%c value of first CMYK entry is not 0 "
219  "but %d\n", "CMYK"[i], val);
220  }
221 
222  for (i = 0; i < FF_ARRAY_ELEMS(s->cmyk_adjust); i++) {
223  int k;
224  for (k = 0; k < FF_ARRAY_ELEMS(s->cmyk_adjust[0]); k++) {
225  READ16(val);
226  s->cmyk_adjust[i][k] = val / 100.;
227  }
228  ret = register_range(s, i);
229  if (ret < 0)
230  goto end;
231  }
232 
233 end:
234  av_file_unmap(buf, size);
235  return ret;
236 }
237 
238 static int config_input(AVFilterLink *inlink)
239 {
240  int i, ret;
241  AVFilterContext *ctx = inlink->dst;
242  SelectiveColorContext *s = ctx->priv;
244 
245  s->is_16bit = desc->comp[0].depth > 8;
246  s->step = av_get_padded_bits_per_pixel(desc) >> (3 + s->is_16bit);
247 
248  ret = ff_fill_rgba_map(s->rgba_map, inlink->format);
249  if (ret < 0)
250  return ret;
251 
252  /* If the following conditions are not met, it will cause trouble while
253  * parsing the PS file */
254  av_assert0(FF_ARRAY_ELEMS(s->cmyk_adjust) == 10 - 1);
256 
257  if (s->psfile) {
258  ret = parse_psfile(ctx, s->psfile);
259  if (ret < 0)
260  return ret;
261  } else {
262  for (i = 0; i < FF_ARRAY_ELEMS(s->opt_cmyk_adjust); i++) {
263  const char *opt_cmyk_adjust = s->opt_cmyk_adjust[i];
264 
265  if (opt_cmyk_adjust) {
266  float *cmyk = s->cmyk_adjust[i];
267 
268  sscanf(s->opt_cmyk_adjust[i], "%f %f %f %f", cmyk, cmyk+1, cmyk+2, cmyk+3);
269  ret = register_range(s, i);
270  if (ret < 0)
271  return ret;
272  }
273  }
274  }
275 
276  av_log(s, AV_LOG_VERBOSE, "Adjustments:%s\n", s->nb_process_ranges ? "" : " none");
277  for (i = 0; i < s->nb_process_ranges; i++) {
278  const struct process_range *pr = &s->process_ranges[i];
279  const float *cmyk = s->cmyk_adjust[pr->range_id];
280 
281  av_log(s, AV_LOG_VERBOSE, "%8ss: C=%6g M=%6g Y=%6g K=%6g\n",
282  color_names[pr->range_id], cmyk[0], cmyk[1], cmyk[2], cmyk[3]);
283  }
284 
285  return 0;
286 }
287 
289 {
290  static const enum AVPixelFormat pix_fmts[] = {
299  };
300  AVFilterFormats *fmts_list = ff_make_format_list(pix_fmts);
301  if (!fmts_list)
302  return AVERROR(ENOMEM);
303  return ff_set_common_formats(ctx, fmts_list);
304 }
305 
306 static inline int comp_adjust(int scale, float value, float adjust, float k, int correction_method)
307 {
308  const float min = -value;
309  const float max = 1. - value;
310  float res = (-1. - adjust) * k - adjust;
311  if (correction_method == CORRECTION_METHOD_RELATIVE)
312  res *= max;
313  return lrint(av_clipf(res, min, max) * scale);
314 }
315 
316 #define DECLARE_SELECTIVE_COLOR_FUNC(nbits) \
317 static inline int selective_color_##nbits(AVFilterContext *ctx, ThreadData *td, \
318  int jobnr, int nb_jobs, int direct, int correction_method) \
319 { \
320  int i, x, y; \
321  const AVFrame *in = td->in; \
322  AVFrame *out = td->out; \
323  const SelectiveColorContext *s = ctx->priv; \
324  const int height = in->height; \
325  const int width = in->width; \
326  const int slice_start = (height * jobnr ) / nb_jobs; \
327  const int slice_end = (height * (jobnr+1)) / nb_jobs; \
328  const int dst_linesize = out->linesize[0]; \
329  const int src_linesize = in->linesize[0]; \
330  const uint8_t roffset = s->rgba_map[R]; \
331  const uint8_t goffset = s->rgba_map[G]; \
332  const uint8_t boffset = s->rgba_map[B]; \
333  const uint8_t aoffset = s->rgba_map[A]; \
334  \
335  for (y = slice_start; y < slice_end; y++) { \
336  uint##nbits##_t *dst = ( uint##nbits##_t *)(out->data[0] + y * dst_linesize); \
337  const uint##nbits##_t *src = (const uint##nbits##_t *)( in->data[0] + y * src_linesize); \
338  \
339  for (x = 0; x < width * s->step; x += s->step) { \
340  const int r = src[x + roffset]; \
341  const int g = src[x + goffset]; \
342  const int b = src[x + boffset]; \
343  const int min_color = FFMIN3(r, g, b); \
344  const int max_color = FFMAX3(r, g, b); \
345  const int is_white = (r > 1<<(nbits-1) && g > 1<<(nbits-1) && b > 1<<(nbits-1)); \
346  const int is_neutral = (r || g || b) && \
347  r != (1<<nbits)-1 && g != (1<<nbits)-1 && b != (1<<nbits)-1; \
348  const int is_black = (r < 1<<(nbits-1) && g < 1<<(nbits-1) && b < 1<<(nbits-1)); \
349  const uint32_t range_flag = (r == max_color) << RANGE_REDS \
350  | (r == min_color) << RANGE_CYANS \
351  | (g == max_color) << RANGE_GREENS \
352  | (g == min_color) << RANGE_MAGENTAS \
353  | (b == max_color) << RANGE_BLUES \
354  | (b == min_color) << RANGE_YELLOWS \
355  | is_white << RANGE_WHITES \
356  | is_neutral << RANGE_NEUTRALS \
357  | is_black << RANGE_BLACKS; \
358  \
359  const float rnorm = r * (1.f / ((1<<nbits)-1)); \
360  const float gnorm = g * (1.f / ((1<<nbits)-1)); \
361  const float bnorm = b * (1.f / ((1<<nbits)-1)); \
362  int adjust_r = 0, adjust_g = 0, adjust_b = 0; \
363  \
364  for (i = 0; i < s->nb_process_ranges; i++) { \
365  const struct process_range *pr = &s->process_ranges[i]; \
366  \
367  if (range_flag & pr->mask) { \
368  const int scale = pr->get_scale(r, g, b, min_color, max_color); \
369  \
370  if (scale > 0) { \
371  const float *cmyk_adjust = s->cmyk_adjust[pr->range_id]; \
372  const float adj_c = cmyk_adjust[0]; \
373  const float adj_m = cmyk_adjust[1]; \
374  const float adj_y = cmyk_adjust[2]; \
375  const float k = cmyk_adjust[3]; \
376  \
377  adjust_r += comp_adjust(scale, rnorm, adj_c, k, correction_method); \
378  adjust_g += comp_adjust(scale, gnorm, adj_m, k, correction_method); \
379  adjust_b += comp_adjust(scale, bnorm, adj_y, k, correction_method); \
380  } \
381  } \
382  } \
383  \
384  if (!direct || adjust_r || adjust_g || adjust_b) { \
385  dst[x + roffset] = av_clip_uint##nbits(r + adjust_r); \
386  dst[x + goffset] = av_clip_uint##nbits(g + adjust_g); \
387  dst[x + boffset] = av_clip_uint##nbits(b + adjust_b); \
388  if (!direct && s->step == 4) \
389  dst[x + aoffset] = src[x + aoffset]; \
390  } \
391  } \
392  } \
393  return 0; \
394 }
395 
396 #define DEF_SELECTIVE_COLOR_FUNC(name, direct, correction_method, nbits) \
397 static int selective_color_##name##_##nbits(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs) \
398 { \
399  return selective_color_##nbits(ctx, arg, jobnr, nb_jobs, direct, correction_method); \
400 }
401 
402 #define DEF_SELECTIVE_COLOR_FUNCS(nbits) \
403 DECLARE_SELECTIVE_COLOR_FUNC(nbits) \
404 DEF_SELECTIVE_COLOR_FUNC(indirect_absolute, 0, CORRECTION_METHOD_ABSOLUTE, nbits) \
405 DEF_SELECTIVE_COLOR_FUNC(indirect_relative, 0, CORRECTION_METHOD_RELATIVE, nbits) \
406 DEF_SELECTIVE_COLOR_FUNC( direct_absolute, 1, CORRECTION_METHOD_ABSOLUTE, nbits) \
407 DEF_SELECTIVE_COLOR_FUNC( direct_relative, 1, CORRECTION_METHOD_RELATIVE, nbits)
408 
411 
412 typedef int (*selective_color_func_type)(AVFilterContext *ctx, void *td, int jobnr, int nb_jobs);
413 
414 static int filter_frame(AVFilterLink *inlink, AVFrame *in)
415 {
416  AVFilterContext *ctx = inlink->dst;
417  AVFilterLink *outlink = ctx->outputs[0];
418  int direct;
419  AVFrame *out;
420  ThreadData td;
421  const SelectiveColorContext *s = ctx->priv;
422  static const selective_color_func_type funcs[2][2][2] = {
423  {
424  {selective_color_indirect_absolute_8, selective_color_indirect_relative_8},
425  {selective_color_direct_absolute_8, selective_color_direct_relative_8},
426  },{
427  {selective_color_indirect_absolute_16, selective_color_indirect_relative_16},
428  {selective_color_direct_absolute_16, selective_color_direct_relative_16},
429  }
430  };
431 
432  if (av_frame_is_writable(in)) {
433  direct = 1;
434  out = in;
435  } else {
436  direct = 0;
437  out = ff_get_video_buffer(outlink, outlink->w, outlink->h);
438  if (!out) {
439  av_frame_free(&in);
440  return AVERROR(ENOMEM);
441  }
442  av_frame_copy_props(out, in);
443  }
444 
445  td.in = in;
446  td.out = out;
447  ctx->internal->execute(ctx, funcs[s->is_16bit][direct][s->correction_method],
448  &td, NULL, FFMIN(inlink->h, ff_filter_get_nb_threads(ctx)));
449 
450  if (!direct)
451  av_frame_free(&in);
452  return ff_filter_frame(outlink, out);
453 }
454 
456  {
457  .name = "default",
458  .type = AVMEDIA_TYPE_VIDEO,
459  .filter_frame = filter_frame,
460  .config_props = config_input,
461  },
462  { NULL }
463 };
464 
466  {
467  .name = "default",
468  .type = AVMEDIA_TYPE_VIDEO,
469  },
470  { NULL }
471 };
472 
474  .name = "selectivecolor",
475  .description = NULL_IF_CONFIG_SMALL("Apply CMYK adjustments to specific color ranges."),
476  .priv_size = sizeof(SelectiveColorContext),
478  .inputs = selectivecolor_inputs,
479  .outputs = selectivecolor_outputs,
480  .priv_class = &selectivecolor_class,
482 };
#define NULL
Definition: coverity.c:32
const char const char void * val
Definition: avisynth_c.h:771
const char * s
Definition: avisynth_c.h:768
AVFrame * out
Definition: af_aiir.c:31
const AVPixFmtDescriptor * av_pix_fmt_desc_get(enum AVPixelFormat pix_fmt)
Definition: pixdesc.c:2363
This structure describes decoded (raw) audio or video data.
Definition: frame.h:218
AVOption.
Definition: opt.h:246
correction_method
#define AV_LOG_WARNING
Something somehow does not look correct.
Definition: log.h:182
Main libavfilter public API header.
packed RGB 8:8:8, 24bpp, RGBRGB...
Definition: pixfmt.h:64
const char * g
Definition: vf_curves.c:112
const char * desc
Definition: nvenc.c:65
#define AV_PIX_FMT_RGBA64
Definition: pixfmt.h:358
AVFilter ff_vf_selectivecolor
const char * b
Definition: vf_curves.c:113
int(* selective_color_func_type)(AVFilterContext *ctx, void *td, int jobnr, int nb_jobs)
#define AV_PIX_FMT_BGRA64
Definition: pixfmt.h:363
color_range
static int get_rgb_scale(int r, int g, int b, int min_val, int max_val)
int version
Definition: avisynth_c.h:766
packed BGR 8:8:8, 32bpp, XBGRXBGR... X=unused/undefined
Definition: pixfmt.h:235
AVFrame * ff_get_video_buffer(AVFilterLink *link, int w, int h)
Request a picture buffer with a specific set of permissions.
Definition: video.c:99
static int filter_frame(AVFilterLink *inlink, AVFrame *in)
AVFilterFormats * ff_make_format_list(const int *fmts)
Create a list of supported formats.
Definition: formats.c:283
#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:125
static const AVFilterPad selectivecolor_inputs[]
const char * name
Pad name.
Definition: internal.h:60
#define av_assert0(cond)
assert() equivalent, that is always enabled.
Definition: avassert.h:37
struct process_range process_ranges[NB_RANGES]
int ff_filter_frame(AVFilterLink *link, AVFrame *frame)
Send a frame of data to the next filter.
Definition: avfilter.c:1080
AVFrame * in
Definition: af_aiir.c:31
AVComponentDescriptor comp[4]
Parameters that describe how pixels are packed.
Definition: pixdesc.h:117
uint8_t
packed RGB 8:8:8, 32bpp, RGBXRGBX... X=unused/undefined
Definition: pixfmt.h:234
AVOptions.
static av_cold int end(AVCodecContext *avctx)
Definition: avrndec.c:90
static int register_range(SelectiveColorContext *s, int range_id)
packed ABGR 8:8:8:8, 32bpp, ABGRABGR...
Definition: pixfmt.h:90
Misc file utilities.
char * opt_cmyk_adjust[NB_RANGES]
static int flags
Definition: log.c:55
#define AV_PIX_FMT_BGR48
Definition: pixfmt.h:359
#define AV_LOG_VERBOSE
Detailed information.
Definition: log.h:192
ptrdiff_t size
Definition: opengl_enc.c:101
CheckasmFunc * funcs
Definition: checkasm.c:237
#define av_log(a,...)
A filter pad used for either input or output.
Definition: internal.h:54
#define OFFSET(x)
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:176
void av_file_unmap(uint8_t *bufptr, size_t size)
Unmap or free the buffer bufptr created by av_file_map().
Definition: file.c:133
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:568
#define td
Definition: regdef.h:70
int av_file_map(const char *filename, uint8_t **bufptr, size_t *size, int log_offset, void *log_ctx)
Read the file with name filename, and put its content in a newly allocated buffer or map it with mmap...
Definition: file.c:53
AVFILTER_DEFINE_CLASS(selectivecolor)
static int config_input(AVFilterLink *inlink)
#define AVERROR(e)
Definition: error.h:43
void av_frame_free(AVFrame **frame)
Free the frame and any dynamically allocated objects in it, e.g.
Definition: frame.c:202
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
Definition: internal.h:186
packed BGRA 8:8:8:8, 32bpp, BGRABGRA...
Definition: pixfmt.h:91
const char * r
Definition: vf_curves.c:111
void * priv
private data for use by the filter
Definition: avfilter.h:353
int av_get_padded_bits_per_pixel(const AVPixFmtDescriptor *pixdesc)
Return the number of bits per pixel for the pixel format described by pixdesc, including any padding ...
Definition: pixdesc.c:2328
#define AVFILTER_FLAG_SLICE_THREADS
The filter supports multithreading by splitting frames into multiple parts and processing them concur...
Definition: avfilter.h:116
#define AV_PIX_FMT_RGB48
Definition: pixfmt.h:354
simple assert() macros that are a bit more flexible than ISO C assert().
tuple adjust
Definition: normalize.py:25
packed ARGB 8:8:8:8, 32bpp, ARGBARGB...
Definition: pixfmt.h:88
#define RANGE_OPTION(color_name, range)
packed RGBA 8:8:8:8, 32bpp, RGBARGBA...
Definition: pixfmt.h:89
static const AVFilterPad selectivecolor_outputs[]
#define DEF_SELECTIVE_COLOR_FUNCS(nbits)
int ff_filter_get_nb_threads(AVFilterContext *ctx)
Get number of threads for current filter instance.
Definition: avfilter.c:802
#define FFMIN(a, b)
Definition: common.h:96
GLsizei GLboolean const GLfloat * value
Definition: opengl_enc.c:109
#define FLAGS
AVFormatContext * ctx
Definition: movenc.c:48
#define DECLARE_RANGE_SCALE_FUNCS(nbits)
packed RGB 8:8:8, 24bpp, BGRBGR...
Definition: pixfmt.h:65
static const AVFilterPad inputs[]
Definition: af_acontrast.c:193
static const AVFilterPad outputs[]
Definition: af_acontrast.c:203
#define FF_ARRAY_ELEMS(a)
int ff_fill_rgba_map(uint8_t *rgba_map, enum AVPixelFormat pix_fmt)
Definition: drawutils.c:35
misc drawing utilities
int av_frame_is_writable(AVFrame *frame)
Check if the frame data is writable.
Definition: frame.c:592
float cmyk_adjust[NB_RANGES][4]
Descriptor that unambiguously describes how the bits of a pixel are stored in the up to 4 data planes...
Definition: pixdesc.h:81
#define READ16(dst)
static const char * color_names[NB_RANGES]
uint8_t pi<< 24) CONV_FUNC_GROUP(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_U8, uint8_t,(*(constuint8_t *) pi-0x80)*(1.0f/(1<< 7))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_U8, uint8_t,(*(constuint8_t *) pi-0x80)*(1.0/(1<< 7))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_S16, int16_t,(*(constint16_t *) pi >>8)+0x80) CONV_FUNC_GROUP(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_S16, int16_t,*(constint16_t *) pi *(1.0f/(1<< 15))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_S16, int16_t,*(constint16_t *) pi *(1.0/(1<< 15))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_S32, int32_t,(*(constint32_t *) pi >>24)+0x80) CONV_FUNC_GROUP(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_S32, int32_t,*(constint32_t *) pi *(1.0f/(1U<< 31))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_S32, int32_t,*(constint32_t *) pi *(1.0/(1U<< 31))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_FLT, float, av_clip_uint8(lrintf(*(constfloat *) pi *(1<< 7))+0x80)) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S16, int16_t, AV_SAMPLE_FMT_FLT, float, av_clip_int16(lrintf(*(constfloat *) pi *(1<< 15)))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_FLT, float, av_clipl_int32(llrintf(*(constfloat *) pi *(1U<< 31)))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_DBL, double, av_clip_uint8(lrint(*(constdouble *) pi *(1<< 7))+0x80)) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S16, int16_t, AV_SAMPLE_FMT_DBL, double, av_clip_int16(lrint(*(constdouble *) pi *(1<< 15)))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_DBL, double, av_clipl_int32(llrint(*(constdouble *) pi *(1U<< 31))))#defineSET_CONV_FUNC_GROUP(ofmt, ifmt) staticvoidset_generic_function(AudioConvert *ac){}voidff_audio_convert_free(AudioConvert **ac){if(!*ac) return;ff_dither_free(&(*ac) ->dc);av_freep(ac);}AudioConvert *ff_audio_convert_alloc(AVAudioResampleContext *avr, enumAVSampleFormatout_fmt, enumAVSampleFormatin_fmt, intchannels, intsample_rate, intapply_map){AudioConvert *ac;intin_planar, out_planar;ac=av_mallocz(sizeof(*ac));if(!ac) returnNULL;ac->avr=avr;ac->out_fmt=out_fmt;ac->in_fmt=in_fmt;ac->channels=channels;ac->apply_map=apply_map;if(avr->dither_method!=AV_RESAMPLE_DITHER_NONE &&av_get_packed_sample_fmt(out_fmt)==AV_SAMPLE_FMT_S16 &&av_get_bytes_per_sample(in_fmt)>2){ac->dc=ff_dither_alloc(avr, out_fmt, in_fmt, channels, sample_rate, apply_map);if(!ac->dc){av_free(ac);returnNULL;}returnac;}in_planar=ff_sample_fmt_is_planar(in_fmt, channels);out_planar=ff_sample_fmt_is_planar(out_fmt, channels);if(in_planar==out_planar){ac->func_type=CONV_FUNC_TYPE_FLAT;ac->planes=in_planar?ac->channels:1;}elseif(in_planar) ac->func_type=CONV_FUNC_TYPE_INTERLEAVE;elseac->func_type=CONV_FUNC_TYPE_DEINTERLEAVE;set_generic_function(ac);if(ARCH_AARCH64) ff_audio_convert_init_aarch64(ac);if(ARCH_ARM) ff_audio_convert_init_arm(ac);if(ARCH_X86) ff_audio_convert_init_x86(ac);returnac;}intff_audio_convert(AudioConvert *ac, AudioData *out, AudioData *in){intuse_generic=1;intlen=in->nb_samples;intp;if(ac->dc){av_log(ac->avr, AV_LOG_TRACE,"%dsamples-audio_convert:%sto%s(dithered)\n", len, av_get_sample_fmt_name(ac->in_fmt), av_get_sample_fmt_name(ac->out_fmt));returnff_convert_dither(ac-> in
void * buf
Definition: avisynth_c.h:690
Describe the class of an AVClass context structure.
Definition: log.h:67
Filter definition.
Definition: avfilter.h:144
static const AVOption selectivecolor_options[]
#define mid_pred
Definition: mathops.h:97
packed BGR 8:8:8, 32bpp, BGRXBGRX... X=unused/undefined
Definition: pixfmt.h:236
const char * name
Filter name.
Definition: avfilter.h:148
AVFilterLink ** outputs
array of pointers to output links
Definition: avfilter.h:350
static enum AVPixelFormat pix_fmts[]
Definition: libkvazaar.c:266
AVFilterInternal * internal
An opaque struct for libavfilter internal use.
Definition: avfilter.h:378
int(* get_range_scale_func)(int r, int g, int b, int min_val, int max_val)
int
static int parse_psfile(AVFilterContext *ctx, const char *fname)
static int query_formats(AVFilterContext *ctx)
avfilter_execute_func * execute
Definition: internal.h:155
A list of supported formats for one end of a filter link.
Definition: formats.h:64
#define lrint
Definition: tablegen.h:53
An instance of a filter.
Definition: avfilter.h:338
FILE * out
Definition: movenc.c:54
get_range_scale_func get_scale
static int comp_adjust(int scale, float value, float adjust, float k, int correction_method)
internal API functions
int depth
Number of bits in the component.
Definition: pixdesc.h:58
packed RGB 8:8:8, 32bpp, XRGBXRGB... X=unused/undefined
Definition: pixfmt.h:233
float min
AVPixelFormat
Pixel format.
Definition: pixfmt.h:60
static int get_cmy_scale(int r, int g, int b, int min_val, int max_val)
int av_frame_copy_props(AVFrame *dst, const AVFrame *src)
Copy only "metadata" fields from src to dst.
Definition: frame.c:652