FFmpeg
vf_colorlevels.c
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1 /*
2  * Copyright (c) 2013 Paul B Mahol
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 #include "libavutil/imgutils.h"
22 #include "libavutil/opt.h"
23 #include "libavutil/pixdesc.h"
24 #include "avfilter.h"
25 #include "drawutils.h"
26 #include "formats.h"
27 #include "internal.h"
28 #include "video.h"
29 #include "preserve_color.h"
30 
31 #define R 0
32 #define G 1
33 #define B 2
34 #define A 3
35 
36 typedef struct Range {
37  double in_min, in_max;
38  double out_min, out_max;
39 } Range;
40 
41 typedef struct ColorLevelsContext {
42  const AVClass *class;
45 
46  int nb_comp;
47  int bpp;
48  int step;
49  uint8_t rgba_map[4];
50  int linesize;
51 
52  int (*colorlevels_slice[2])(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs);
54 
55 #define OFFSET(x) offsetof(ColorLevelsContext, x)
56 #define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_RUNTIME_PARAM
57 static const AVOption colorlevels_options[] = {
58  { "rimin", "set input red black point", OFFSET(range[R].in_min), AV_OPT_TYPE_DOUBLE, {.dbl=0}, -1, 1, FLAGS },
59  { "gimin", "set input green black point", OFFSET(range[G].in_min), AV_OPT_TYPE_DOUBLE, {.dbl=0}, -1, 1, FLAGS },
60  { "bimin", "set input blue black point", OFFSET(range[B].in_min), AV_OPT_TYPE_DOUBLE, {.dbl=0}, -1, 1, FLAGS },
61  { "aimin", "set input alpha black point", OFFSET(range[A].in_min), AV_OPT_TYPE_DOUBLE, {.dbl=0}, -1, 1, FLAGS },
62  { "rimax", "set input red white point", OFFSET(range[R].in_max), AV_OPT_TYPE_DOUBLE, {.dbl=1}, -1, 1, FLAGS },
63  { "gimax", "set input green white point", OFFSET(range[G].in_max), AV_OPT_TYPE_DOUBLE, {.dbl=1}, -1, 1, FLAGS },
64  { "bimax", "set input blue white point", OFFSET(range[B].in_max), AV_OPT_TYPE_DOUBLE, {.dbl=1}, -1, 1, FLAGS },
65  { "aimax", "set input alpha white point", OFFSET(range[A].in_max), AV_OPT_TYPE_DOUBLE, {.dbl=1}, -1, 1, FLAGS },
66  { "romin", "set output red black point", OFFSET(range[R].out_min), AV_OPT_TYPE_DOUBLE, {.dbl=0}, 0, 1, FLAGS },
67  { "gomin", "set output green black point", OFFSET(range[G].out_min), AV_OPT_TYPE_DOUBLE, {.dbl=0}, 0, 1, FLAGS },
68  { "bomin", "set output blue black point", OFFSET(range[B].out_min), AV_OPT_TYPE_DOUBLE, {.dbl=0}, 0, 1, FLAGS },
69  { "aomin", "set output alpha black point", OFFSET(range[A].out_min), AV_OPT_TYPE_DOUBLE, {.dbl=0}, 0, 1, FLAGS },
70  { "romax", "set output red white point", OFFSET(range[R].out_max), AV_OPT_TYPE_DOUBLE, {.dbl=1}, 0, 1, FLAGS },
71  { "gomax", "set output green white point", OFFSET(range[G].out_max), AV_OPT_TYPE_DOUBLE, {.dbl=1}, 0, 1, FLAGS },
72  { "bomax", "set output blue white point", OFFSET(range[B].out_max), AV_OPT_TYPE_DOUBLE, {.dbl=1}, 0, 1, FLAGS },
73  { "aomax", "set output alpha white point", OFFSET(range[A].out_max), AV_OPT_TYPE_DOUBLE, {.dbl=1}, 0, 1, FLAGS },
74  { "preserve", "set preserve color mode", OFFSET(preserve_color), AV_OPT_TYPE_INT, {.i64=0}, 0, NB_PRESERVE-1, FLAGS, "preserve" },
75  { "none", "disabled", 0, AV_OPT_TYPE_CONST, {.i64=P_NONE}, 0, 0, FLAGS, "preserve" },
76  { "lum", "luminance", 0, AV_OPT_TYPE_CONST, {.i64=P_LUM}, 0, 0, FLAGS, "preserve" },
77  { "max", "max", 0, AV_OPT_TYPE_CONST, {.i64=P_MAX}, 0, 0, FLAGS, "preserve" },
78  { "avg", "average", 0, AV_OPT_TYPE_CONST, {.i64=P_AVG}, 0, 0, FLAGS, "preserve" },
79  { "sum", "sum", 0, AV_OPT_TYPE_CONST, {.i64=P_SUM}, 0, 0, FLAGS, "preserve" },
80  { "nrm", "norm", 0, AV_OPT_TYPE_CONST, {.i64=P_NRM}, 0, 0, FLAGS, "preserve" },
81  { "pwr", "power", 0, AV_OPT_TYPE_CONST, {.i64=P_PWR}, 0, 0, FLAGS, "preserve" },
82  { NULL }
83 };
84 
85 AVFILTER_DEFINE_CLASS(colorlevels);
86 
87 typedef struct ThreadData {
88  const uint8_t *srcrow;
89  uint8_t *dstrow;
91  int src_linesize;
92 
93  float coeff[4];
94 
95  int h;
96 
97  int imin[4];
98  int omin[4];
99 } ThreadData;
100 
101 #define DO_COMMON(type, clip, preserve) \
102  ColorLevelsContext *s = ctx->priv; \
103  const ThreadData *td = arg; \
104  const int linesize = s->linesize; \
105  const int step = s->step; \
106  const int process_h = td->h; \
107  const int slice_start = (process_h * jobnr ) / nb_jobs; \
108  const int slice_end = (process_h * (jobnr+1)) / nb_jobs; \
109  const int src_linesize = td->src_linesize / sizeof(type); \
110  const int dst_linesize = td->dst_linesize / sizeof(type); \
111  const type *srcrow = (const type *)td->srcrow + src_linesize * slice_start; \
112  type *dstrow = (type *)td->dstrow + dst_linesize * slice_start; \
113  const uint8_t offset_r = s->rgba_map[R]; \
114  const uint8_t offset_g = s->rgba_map[G]; \
115  const uint8_t offset_b = s->rgba_map[B]; \
116  const uint8_t offset_a = s->rgba_map[A]; \
117  const int imin_r = td->imin[R]; \
118  const int imin_g = td->imin[G]; \
119  const int imin_b = td->imin[B]; \
120  const int imin_a = td->imin[A]; \
121  const int omin_r = td->omin[R]; \
122  const int omin_g = td->omin[G]; \
123  const int omin_b = td->omin[B]; \
124  const int omin_a = td->omin[A]; \
125  const float coeff_r = td->coeff[R]; \
126  const float coeff_g = td->coeff[G]; \
127  const float coeff_b = td->coeff[B]; \
128  const float coeff_a = td->coeff[A]; \
129  const type *src_r = srcrow + offset_r; \
130  const type *src_g = srcrow + offset_g; \
131  const type *src_b = srcrow + offset_b; \
132  const type *src_a = srcrow + offset_a; \
133  type *dst_r = dstrow + offset_r; \
134  type *dst_g = dstrow + offset_g; \
135  type *dst_b = dstrow + offset_b; \
136  type *dst_a = dstrow + offset_a; \
137  \
138  for (int y = slice_start; y < slice_end; y++) { \
139  for (int x = 0; x < linesize; x += step) { \
140  int ir, ig, ib, or, og, ob; \
141  ir = src_r[x]; \
142  ig = src_g[x]; \
143  ib = src_b[x]; \
144  if (preserve) { \
145  float ratio, icolor, ocolor, max = (1<<(8*sizeof(type)))-1; \
146  \
147  or = (ir - imin_r) * coeff_r + omin_r; \
148  og = (ig - imin_g) * coeff_g + omin_g; \
149  ob = (ib - imin_b) * coeff_b + omin_b; \
150  \
151  preserve_color(s->preserve_color, ir, ig, ib, or, og, ob, max, \
152  &icolor, &ocolor); \
153  if (ocolor > 0.f) { \
154  ratio = icolor / ocolor; \
155  \
156  or *= ratio; \
157  og *= ratio; \
158  ob *= ratio; \
159  } \
160  \
161  dst_r[x] = clip(or); \
162  dst_g[x] = clip(og); \
163  dst_b[x] = clip(ob); \
164  } else { \
165  dst_r[x] = clip((ir - imin_r) * coeff_r + omin_r); \
166  dst_g[x] = clip((ig - imin_g) * coeff_g + omin_g); \
167  dst_b[x] = clip((ib - imin_b) * coeff_b + omin_b); \
168  } \
169  } \
170  \
171  for (int x = 0; x < linesize && s->nb_comp == 4; x += step) \
172  dst_a[x] = clip((src_a[x] - imin_a) * coeff_a + omin_a); \
173  \
174  src_r += src_linesize; \
175  src_g += src_linesize; \
176  src_b += src_linesize; \
177  src_a += src_linesize; \
178  \
179  dst_r += dst_linesize; \
180  dst_g += dst_linesize; \
181  dst_b += dst_linesize; \
182  dst_a += dst_linesize; \
183  }
184 
185 static int colorlevels_slice_8(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
186 {
187  DO_COMMON(uint8_t, av_clip_uint8, 0)
188 
189  return 0;
190 }
191 
192 static int colorlevels_slice_16(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
193 {
194  DO_COMMON(uint16_t, av_clip_uint16, 0)
195 
196  return 0;
197 }
198 
199 static int colorlevels_preserve_slice_8(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
200 {
201  DO_COMMON(uint8_t, av_clip_uint8, 1)
202 
203  return 0;
204 }
205 
206 static int colorlevels_preserve_slice_16(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
207 {
208  DO_COMMON(uint16_t, av_clip_uint16, 1)
209 
210  return 0;
211 }
212 
214 {
215  AVFilterContext *ctx = inlink->dst;
216  ColorLevelsContext *s = ctx->priv;
218 
219  s->nb_comp = desc->nb_components;
220  s->bpp = desc->comp[0].depth >> 3;
221  s->step = av_get_padded_bits_per_pixel(desc) >> (3 + (s->bpp == 2));
222  s->linesize = inlink->w * s->step;
223  ff_fill_rgba_map(s->rgba_map, inlink->format);
224 
225  s->colorlevels_slice[0] = colorlevels_slice_8;
226  s->colorlevels_slice[1] = colorlevels_preserve_slice_8;
227  if (s->bpp == 2) {
228  s->colorlevels_slice[0] = colorlevels_slice_16;
229  s->colorlevels_slice[1] = colorlevels_preserve_slice_16;
230  }
231 
232  return 0;
233 }
234 
236 {
237  AVFilterContext *ctx = inlink->dst;
238  ColorLevelsContext *s = ctx->priv;
239  AVFilterLink *outlink = ctx->outputs[0];
240  const int step = s->step;
241  ThreadData td;
242  AVFrame *out;
243 
244  if (av_frame_is_writable(in)) {
245  out = in;
246  } else {
247  out = ff_get_video_buffer(outlink, outlink->w, outlink->h);
248  if (!out) {
249  av_frame_free(&in);
250  return AVERROR(ENOMEM);
251  }
253  }
254 
255  td.h = inlink->h;
256  td.dst_linesize = out->linesize[0];
257  td.src_linesize = in->linesize[0];
258  td.srcrow = in->data[0];
259  td.dstrow = out->data[0];
260 
261  switch (s->bpp) {
262  case 1:
263  for (int i = 0; i < s->nb_comp; i++) {
264  Range *r = &s->range[i];
265  const uint8_t offset = s->rgba_map[i];
266  const uint8_t *srcrow = in->data[0];
267  int imin = lrint(r->in_min * UINT8_MAX);
268  int imax = lrint(r->in_max * UINT8_MAX);
269  int omin = lrint(r->out_min * UINT8_MAX);
270  int omax = lrint(r->out_max * UINT8_MAX);
271  float coeff;
272 
273  if (imin < 0) {
274  imin = UINT8_MAX;
275  for (int y = 0; y < inlink->h; y++) {
276  const uint8_t *src = srcrow;
277 
278  for (int x = 0; x < s->linesize; x += step)
279  imin = FFMIN(imin, src[x + offset]);
280  srcrow += in->linesize[0];
281  }
282  }
283  if (imax < 0) {
284  srcrow = in->data[0];
285  imax = 0;
286  for (int y = 0; y < inlink->h; y++) {
287  const uint8_t *src = srcrow;
288 
289  for (int x = 0; x < s->linesize; x += step)
290  imax = FFMAX(imax, src[x + offset]);
291  srcrow += in->linesize[0];
292  }
293  }
294 
295  coeff = (omax - omin) / (double)(imax - imin);
296 
297  td.coeff[i] = coeff;
298  td.imin[i] = imin;
299  td.omin[i] = omin;
300  }
301  break;
302  case 2:
303  for (int i = 0; i < s->nb_comp; i++) {
304  Range *r = &s->range[i];
305  const uint8_t offset = s->rgba_map[i];
306  const uint8_t *srcrow = in->data[0];
307  int imin = lrint(r->in_min * UINT16_MAX);
308  int imax = lrint(r->in_max * UINT16_MAX);
309  int omin = lrint(r->out_min * UINT16_MAX);
310  int omax = lrint(r->out_max * UINT16_MAX);
311  float coeff;
312 
313  if (imin < 0) {
314  imin = UINT16_MAX;
315  for (int y = 0; y < inlink->h; y++) {
316  const uint16_t *src = (const uint16_t *)srcrow;
317 
318  for (int x = 0; x < s->linesize; x += step)
319  imin = FFMIN(imin, src[x + offset]);
320  srcrow += in->linesize[0];
321  }
322  }
323  if (imax < 0) {
324  srcrow = in->data[0];
325  imax = 0;
326  for (int y = 0; y < inlink->h; y++) {
327  const uint16_t *src = (const uint16_t *)srcrow;
328 
329  for (int x = 0; x < s->linesize; x += step)
330  imax = FFMAX(imax, src[x + offset]);
331  srcrow += in->linesize[0];
332  }
333  }
334 
335  coeff = (omax - omin) / (double)(imax - imin);
336 
337  td.coeff[i] = coeff;
338  td.imin[i] = imin;
339  td.omin[i] = omin;
340  }
341  break;
342  }
343 
344  ff_filter_execute(ctx, s->colorlevels_slice[s->preserve_color > 0], &td, NULL,
346 
347  if (in != out)
348  av_frame_free(&in);
349  return ff_filter_frame(outlink, out);
350 }
351 
352 static const AVFilterPad colorlevels_inputs[] = {
353  {
354  .name = "default",
355  .type = AVMEDIA_TYPE_VIDEO,
356  .filter_frame = filter_frame,
357  .config_props = config_input,
358  },
359 };
360 
362  {
363  .name = "default",
364  .type = AVMEDIA_TYPE_VIDEO,
365  },
366 };
367 
369  .name = "colorlevels",
370  .description = NULL_IF_CONFIG_SMALL("Adjust the color levels."),
371  .priv_size = sizeof(ColorLevelsContext),
372  .priv_class = &colorlevels_class,
383  .process_command = ff_filter_process_command,
384 };
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
td
#define td
Definition: regdef.h:70
P_PWR
@ P_PWR
Definition: preserve_color.h:33
ThreadData::coeff
float coeff[4]
Definition: vf_colorlevels.c:93
P_MAX
@ P_MAX
Definition: preserve_color.h:29
ColorLevelsContext::linesize
int linesize
Definition: vf_colorlevels.c:50
r
const char * r
Definition: vf_curves.c:116
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
preserve_color.h
out
FILE * out
Definition: movenc.c:54
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
colorlevels_preserve_slice_16
static int colorlevels_preserve_slice_16(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
Definition: vf_colorlevels.c:206
filter_frame
static int filter_frame(AVFilterLink *inlink, AVFrame *in)
Definition: vf_colorlevels.c:235
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
ColorLevelsContext::preserve_color
int preserve_color
Definition: vf_colorlevels.c:44
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
colorlevels_inputs
static const AVFilterPad colorlevels_inputs[]
Definition: vf_colorlevels.c:352
step
trying all byte sequences megabyte in length and selecting the best looking sequence will yield cases to try But a word about which is also called distortion Distortion can be quantified by almost any quality measurement one chooses the sum of squared differences is used but more complex methods that consider psychovisual effects can be used as well It makes no difference in this discussion First step
Definition: rate_distortion.txt:58
preserve_color
static void preserve_color(int preserve_color, float ir, float ig, float ib, float r, float g, float b, float max, float *icolor, float *ocolor)
Definition: preserve_color.h:53
AVOption
AVOption.
Definition: opt.h:247
AV_PIX_FMT_BGR24
@ AV_PIX_FMT_BGR24
packed RGB 8:8:8, 24bpp, BGRBGR...
Definition: pixfmt.h:69
AV_PIX_FMT_BGRA
@ AV_PIX_FMT_BGRA
packed BGRA 8:8:8:8, 32bpp, BGRABGRA...
Definition: pixfmt.h:95
FFMAX
#define FFMAX(a, b)
Definition: macros.h:47
AVFilter::name
const char * name
Filter name.
Definition: avfilter.h:153
video.h
config_input
static int config_input(AVFilterLink *inlink)
Definition: vf_colorlevels.c:213
A
#define A
Definition: vf_colorlevels.c:34
AVFrame::data
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
Definition: frame.h:317
formats.h
ff_vf_colorlevels
const AVFilter ff_vf_colorlevels
Definition: vf_colorlevels.c:368
P_LUM
@ P_LUM
Definition: preserve_color.h:28
AVFilterPad
A filter pad used for either input or output.
Definition: internal.h:50
ColorLevelsContext
Definition: vf_colorlevels.c:41
ThreadData::imin
int imin[4]
Definition: vf_colorlevels.c:97
lrint
#define lrint
Definition: tablegen.h:53
ThreadData::srcrow
const uint8_t * srcrow
Definition: vf_colorlevels.c:88
s
#define s(width, name)
Definition: cbs_vp9.c:257
colorlevels_preserve_slice_8
static int colorlevels_preserve_slice_8(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
Definition: vf_colorlevels.c:199
colorlevels_slice_16
static int colorlevels_slice_16(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
Definition: vf_colorlevels.c:192
Range::in_min
double in_min
Definition: vf_colorlevels.c:37
AV_OPT_TYPE_DOUBLE
@ AV_OPT_TYPE_DOUBLE
Definition: opt.h:226
ctx
AVFormatContext * ctx
Definition: movenc.c:48
FILTER_INPUTS
#define FILTER_INPUTS(array)
Definition: internal.h:191
ThreadData::h
int h
Definition: vf_blend.c:86
AV_PIX_FMT_RGBA
@ AV_PIX_FMT_RGBA
packed RGBA 8:8:8:8, 32bpp, RGBARGBA...
Definition: pixfmt.h:93
arg
const char * arg
Definition: jacosubdec.c:67
ColorLevelsContext::range
Range range[4]
Definition: vf_colorlevels.c:43
AV_PIX_FMT_RGBA64
#define AV_PIX_FMT_RGBA64
Definition: pixfmt.h:381
AVClass
Describe the class of an AVClass context structure.
Definition: log.h:66
AV_PIX_FMT_BGR48
#define AV_PIX_FMT_BGR48
Definition: pixfmt.h:382
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
src
#define src
Definition: vp8dsp.c:255
AV_PIX_FMT_BGR0
@ AV_PIX_FMT_BGR0
packed BGR 8:8:8, 32bpp, BGRXBGRX... X=unused/undefined
Definition: pixfmt.h:230
P_AVG
@ P_AVG
Definition: preserve_color.h:30
AV_PIX_FMT_ABGR
@ AV_PIX_FMT_ABGR
packed ABGR 8:8:8:8, 32bpp, ABGRABGR...
Definition: pixfmt.h:94
NB_PRESERVE
@ NB_PRESERVE
Definition: preserve_color.h:34
Range
Definition: vf_colorbalance.c:38
G
#define G
Definition: vf_colorlevels.c:32
OFFSET
#define OFFSET(x)
Definition: vf_colorlevels.c:55
P_SUM
@ P_SUM
Definition: preserve_color.h:31
AV_PIX_FMT_RGB24
@ AV_PIX_FMT_RGB24
packed RGB 8:8:8, 24bpp, RGBRGB...
Definition: pixfmt.h:68
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
ColorLevelsContext::rgba_map
uint8_t rgba_map[4]
Definition: vf_colorlevels.c:49
P_NONE
@ P_NONE
Definition: preserve_color.h:27
av_get_padded_bits_per_pixel
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:2529
FILTER_PIXFMTS
#define FILTER_PIXFMTS(...)
Definition: internal.h:177
AV_PIX_FMT_RGB48
#define AV_PIX_FMT_RGB48
Definition: pixfmt.h:377
av_frame_is_writable
int av_frame_is_writable(AVFrame *frame)
Check if the frame data is writable.
Definition: frame.c:473
AVFILTER_DEFINE_CLASS
AVFILTER_DEFINE_CLASS(colorlevels)
ff_filter_process_command
int ff_filter_process_command(AVFilterContext *ctx, const char *cmd, const char *arg, char *res, int res_len, int flags)
Generic processing of user supplied commands that are set in the same way as the filter options.
Definition: avfilter.c:882
B
#define B
Definition: vf_colorlevels.c:33
offset
it s the only field you need to keep assuming you have a context There is some magic you don t need to care about around this just let it vf offset
Definition: writing_filters.txt:86
AV_PIX_FMT_RGB0
@ AV_PIX_FMT_RGB0
packed RGB 8:8:8, 32bpp, RGBXRGBX... X=unused/undefined
Definition: pixfmt.h:228
internal.h
P_NRM
@ P_NRM
Definition: preserve_color.h:32
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
AV_PIX_FMT_ARGB
@ AV_PIX_FMT_ARGB
packed ARGB 8:8:8:8, 32bpp, ARGBARGB...
Definition: pixfmt.h:92
colorlevels_slice_8
static int colorlevels_slice_8(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
Definition: vf_colorlevels.c:185
AV_PIX_FMT_BGRA64
#define AV_PIX_FMT_BGRA64
Definition: pixfmt.h:386
i
#define i(width, name, range_min, range_max)
Definition: cbs_h2645.c:271
ThreadData::dstrow
uint8_t * dstrow
Definition: vf_colorlevels.c:89
ColorLevelsContext::bpp
int bpp
Definition: vf_colorlevels.c:47
ff_filter_get_nb_threads
int ff_filter_get_nb_threads(AVFilterContext *ctx)
Get number of threads for current filter instance.
Definition: avfilter.c:803
ThreadData
Used for passing data between threads.
Definition: dsddec.c:67
FFMIN
#define FFMIN(a, b)
Definition: macros.h:49
AVFilterPad::name
const char * name
Pad name.
Definition: internal.h:56
ColorLevelsContext::nb_comp
int nb_comp
Definition: vf_colorlevels.c:46
Range::out_min
double out_min
Definition: vf_colorlevels.c:38
AVFilter
Filter definition.
Definition: avfilter.h:149
AV_PIX_FMT_0BGR
@ AV_PIX_FMT_0BGR
packed BGR 8:8:8, 32bpp, XBGRXBGR... X=unused/undefined
Definition: pixfmt.h:229
colorlevels_outputs
static const AVFilterPad colorlevels_outputs[]
Definition: vf_colorlevels.c:361
ColorLevelsContext::colorlevels_slice
int(* colorlevels_slice[2])(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
Definition: vf_colorlevels.c:52
ThreadData::src_linesize
int src_linesize
Definition: vf_bm3d.c:56
colorlevels_options
static const AVOption colorlevels_options[]
Definition: vf_colorlevels.c:57
AV_OPT_TYPE_INT
@ AV_OPT_TYPE_INT
Definition: opt.h:224
avfilter.h
ColorLevelsContext::step
int step
Definition: vf_colorlevels.c:48
av_clip_uint8
#define av_clip_uint8
Definition: common.h:102
AVFilterContext
An instance of a filter.
Definition: avfilter.h:386
av_clip_uint16
#define av_clip_uint16
Definition: common.h:108
FLAGS
#define FLAGS
Definition: vf_colorlevels.c:56
DO_COMMON
#define DO_COMMON(type, clip, preserve)
Definition: vf_colorlevels.c:101
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:121
desc
const char * desc
Definition: libsvtav1.c:79
AVMEDIA_TYPE_VIDEO
@ AVMEDIA_TYPE_VIDEO
Definition: avutil.h:201
ThreadData::dst_linesize
int dst_linesize
Definition: vf_colorlevels.c:90
AVPixFmtDescriptor
Descriptor that unambiguously describes how the bits of a pixel are stored in the up to 4 data planes...
Definition: pixdesc.h:69
ThreadData::omin
int omin[4]
Definition: vf_colorlevels.c:98
FILTER_OUTPUTS
#define FILTER_OUTPUTS(array)
Definition: internal.h:192
ff_fill_rgba_map
int ff_fill_rgba_map(uint8_t *rgba_map, enum AVPixelFormat pix_fmt)
Definition: drawutils.c:33
imgutils.h
AVFrame::linesize
int linesize[AV_NUM_DATA_POINTERS]
For video, size in bytes of each picture line.
Definition: frame.h:334
AV_PIX_FMT_0RGB
@ AV_PIX_FMT_0RGB
packed RGB 8:8:8, 32bpp, XRGBXRGB... X=unused/undefined
Definition: pixfmt.h:227
coeff
static const double coeff[2][5]
Definition: vf_owdenoise.c:78
drawutils.h
ff_filter_execute
static av_always_inline int ff_filter_execute(AVFilterContext *ctx, avfilter_action_func *func, void *arg, int *ret, int nb_jobs)
Definition: internal.h:143
int
int
Definition: ffmpeg_filter.c:156
Range::in_max
double in_max
Definition: vf_colorlevels.c:37
AV_OPT_TYPE_CONST
@ AV_OPT_TYPE_CONST
Definition: opt.h:233
Range::out_max
double out_max
Definition: vf_colorlevels.c:38
R
#define R
Definition: vf_colorlevels.c:31