FFmpeg  4.4
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 
30 #define R 0
31 #define G 1
32 #define B 2
33 #define A 3
34 
35 typedef struct Range {
36  double in_min, in_max;
37  double out_min, out_max;
38 } Range;
39 
40 typedef struct ColorLevelsContext {
41  const AVClass *class;
43 
44  int nb_comp;
45  int bpp;
46  int step;
48  int linesize;
49 
50  int (*colorlevels_slice)(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs);
52 
53 #define OFFSET(x) offsetof(ColorLevelsContext, x)
54 #define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_RUNTIME_PARAM
55 static const AVOption colorlevels_options[] = {
56  { "rimin", "set input red black point", OFFSET(range[R].in_min), AV_OPT_TYPE_DOUBLE, {.dbl=0}, -1, 1, FLAGS },
57  { "gimin", "set input green black point", OFFSET(range[G].in_min), AV_OPT_TYPE_DOUBLE, {.dbl=0}, -1, 1, FLAGS },
58  { "bimin", "set input blue black point", OFFSET(range[B].in_min), AV_OPT_TYPE_DOUBLE, {.dbl=0}, -1, 1, FLAGS },
59  { "aimin", "set input alpha black point", OFFSET(range[A].in_min), AV_OPT_TYPE_DOUBLE, {.dbl=0}, -1, 1, FLAGS },
60  { "rimax", "set input red white point", OFFSET(range[R].in_max), AV_OPT_TYPE_DOUBLE, {.dbl=1}, -1, 1, FLAGS },
61  { "gimax", "set input green white point", OFFSET(range[G].in_max), AV_OPT_TYPE_DOUBLE, {.dbl=1}, -1, 1, FLAGS },
62  { "bimax", "set input blue white point", OFFSET(range[B].in_max), AV_OPT_TYPE_DOUBLE, {.dbl=1}, -1, 1, FLAGS },
63  { "aimax", "set input alpha white point", OFFSET(range[A].in_max), AV_OPT_TYPE_DOUBLE, {.dbl=1}, -1, 1, FLAGS },
64  { "romin", "set output red black point", OFFSET(range[R].out_min), AV_OPT_TYPE_DOUBLE, {.dbl=0}, 0, 1, FLAGS },
65  { "gomin", "set output green black point", OFFSET(range[G].out_min), AV_OPT_TYPE_DOUBLE, {.dbl=0}, 0, 1, FLAGS },
66  { "bomin", "set output blue black point", OFFSET(range[B].out_min), AV_OPT_TYPE_DOUBLE, {.dbl=0}, 0, 1, FLAGS },
67  { "aomin", "set output alpha black point", OFFSET(range[A].out_min), AV_OPT_TYPE_DOUBLE, {.dbl=0}, 0, 1, FLAGS },
68  { "romax", "set output red white point", OFFSET(range[R].out_max), AV_OPT_TYPE_DOUBLE, {.dbl=1}, 0, 1, FLAGS },
69  { "gomax", "set output green white point", OFFSET(range[G].out_max), AV_OPT_TYPE_DOUBLE, {.dbl=1}, 0, 1, FLAGS },
70  { "bomax", "set output blue white point", OFFSET(range[B].out_max), AV_OPT_TYPE_DOUBLE, {.dbl=1}, 0, 1, FLAGS },
71  { "aomax", "set output alpha white point", OFFSET(range[A].out_max), AV_OPT_TYPE_DOUBLE, {.dbl=1}, 0, 1, FLAGS },
72  { NULL }
73 };
74 
75 AVFILTER_DEFINE_CLASS(colorlevels);
76 
78 {
79  static const enum AVPixelFormat pix_fmts[] = {
88  };
89 
91  if (!fmts_list)
92  return AVERROR(ENOMEM);
93  return ff_set_common_formats(ctx, fmts_list);
94 }
95 
96 typedef struct ThreadData {
97  const uint8_t *srcrow;
100  int src_linesize;
101 
102  float coeff[4];
103 
104  int h;
105 
106  int imin[4];
107  int omin[4];
108 } ThreadData;
109 
110 #define LOAD_COMMON \
111  ColorLevelsContext *s = ctx->priv; \
112  const ThreadData *td = arg; \
113  const int process_h = td->h; \
114  const int slice_start = (process_h * jobnr ) / nb_jobs; \
115  const int slice_end = (process_h * (jobnr+1)) / nb_jobs; \
116  const uint8_t *srcrow = td->srcrow; \
117  uint8_t *dstrow = td->dstrow; \
118  const int step = s->step;
119 
120 static int colorlevels_slice_8(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
121 {
123 
124  for (int comp = 0; comp < s->nb_comp; comp++) {
125  const uint8_t offset = s->rgba_map[comp];
126  const int imin = td->imin[comp];
127  const int omin = td->omin[comp];
128  const float coeff = td->coeff[comp];
129 
130  for (int y = slice_start; y < slice_end; y++) {
131  const uint8_t *src = srcrow + y * td->src_linesize;
132  uint8_t *dst = dstrow + y * td->dst_linesize;
133 
134  for (int x = 0; x < s->linesize; x += step)
135  dst[x + offset] = av_clip_uint8((src[x + offset] - imin) * coeff + omin);
136  }
137  }
138 
139  return 0;
140 }
141 
142 static int colorlevels_slice_16(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
143 {
145 
146  for (int comp = 0; comp < s->nb_comp; comp++) {
147  const uint8_t offset = s->rgba_map[comp];
148  const int imin = td->imin[comp];
149  const int omin = td->omin[comp];
150  const float coeff = td->coeff[comp];
151 
152  for (int y = slice_start; y < slice_end; y++) {
153  const uint16_t *src = (const uint16_t *)(srcrow + y * td->src_linesize);
154  uint16_t *dst = (uint16_t *)(dstrow + y * td->dst_linesize);
155 
156  for (int x = 0; x < s->linesize; x += step)
157  dst[x + offset] = av_clip_uint16((src[x + offset] - imin) * coeff + omin);
158  }
159  }
160 
161  return 0;
162 }
163 
164 static int config_input(AVFilterLink *inlink)
165 {
166  AVFilterContext *ctx = inlink->dst;
167  ColorLevelsContext *s = ctx->priv;
169 
170  s->nb_comp = desc->nb_components;
171  s->bpp = desc->comp[0].depth >> 3;
172  s->step = av_get_padded_bits_per_pixel(desc) >> (3 + (s->bpp == 2));
173  s->linesize = inlink->w * s->step;
174  ff_fill_rgba_map(s->rgba_map, inlink->format);
175 
176  s->colorlevels_slice = colorlevels_slice_8;
177  if (s->bpp == 2)
178  s->colorlevels_slice = colorlevels_slice_16;
179 
180  return 0;
181 }
182 
183 static int filter_frame(AVFilterLink *inlink, AVFrame *in)
184 {
185  AVFilterContext *ctx = inlink->dst;
186  ColorLevelsContext *s = ctx->priv;
187  AVFilterLink *outlink = ctx->outputs[0];
188  const int step = s->step;
189  ThreadData td;
190  AVFrame *out;
191 
192  if (av_frame_is_writable(in)) {
193  out = in;
194  } else {
195  out = ff_get_video_buffer(outlink, outlink->w, outlink->h);
196  if (!out) {
197  av_frame_free(&in);
198  return AVERROR(ENOMEM);
199  }
201  }
202 
203  td.h = inlink->h;
204  td.dst_linesize = out->linesize[0];
205  td.src_linesize = in->linesize[0];
206  td.srcrow = in->data[0];
207  td.dstrow = out->data[0];
208 
209  switch (s->bpp) {
210  case 1:
211  for (int i = 0; i < s->nb_comp; i++) {
212  Range *r = &s->range[i];
213  const uint8_t offset = s->rgba_map[i];
214  const uint8_t *srcrow = in->data[0];
215  int imin = lrint(r->in_min * UINT8_MAX);
216  int imax = lrint(r->in_max * UINT8_MAX);
217  int omin = lrint(r->out_min * UINT8_MAX);
218  int omax = lrint(r->out_max * UINT8_MAX);
219  float coeff;
220 
221  if (imin < 0) {
222  imin = UINT8_MAX;
223  for (int y = 0; y < inlink->h; y++) {
224  const uint8_t *src = srcrow;
225 
226  for (int x = 0; x < s->linesize; x += step)
227  imin = FFMIN(imin, src[x + offset]);
228  srcrow += in->linesize[0];
229  }
230  }
231  if (imax < 0) {
232  srcrow = in->data[0];
233  imax = 0;
234  for (int y = 0; y < inlink->h; y++) {
235  const uint8_t *src = srcrow;
236 
237  for (int x = 0; x < s->linesize; x += step)
238  imax = FFMAX(imax, src[x + offset]);
239  srcrow += in->linesize[0];
240  }
241  }
242 
243  coeff = (omax - omin) / (double)(imax - imin);
244 
245  td.coeff[i] = coeff;
246  td.imin[i] = imin;
247  td.omin[i] = omin;
248  }
249  break;
250  case 2:
251  for (int i = 0; i < s->nb_comp; i++) {
252  Range *r = &s->range[i];
253  const uint8_t offset = s->rgba_map[i];
254  const uint8_t *srcrow = in->data[0];
255  int imin = lrint(r->in_min * UINT16_MAX);
256  int imax = lrint(r->in_max * UINT16_MAX);
257  int omin = lrint(r->out_min * UINT16_MAX);
258  int omax = lrint(r->out_max * UINT16_MAX);
259  float coeff;
260 
261  if (imin < 0) {
262  imin = UINT16_MAX;
263  for (int y = 0; y < inlink->h; y++) {
264  const uint16_t *src = (const uint16_t *)srcrow;
265 
266  for (int x = 0; x < s->linesize; x += step)
267  imin = FFMIN(imin, src[x + offset]);
268  srcrow += in->linesize[0];
269  }
270  }
271  if (imax < 0) {
272  srcrow = in->data[0];
273  imax = 0;
274  for (int y = 0; y < inlink->h; y++) {
275  const uint16_t *src = (const uint16_t *)srcrow;
276 
277  for (int x = 0; x < s->linesize; x += step)
278  imax = FFMAX(imax, src[x + offset]);
279  srcrow += in->linesize[0];
280  }
281  }
282 
283  coeff = (omax - omin) / (double)(imax - imin);
284 
285  td.coeff[i] = coeff;
286  td.imin[i] = imin;
287  td.omin[i] = omin;
288  }
289  break;
290  }
291 
292  ctx->internal->execute(ctx, s->colorlevels_slice, &td, NULL,
293  FFMIN(inlink->h, ff_filter_get_nb_threads(ctx)));
294 
295  if (in != out)
296  av_frame_free(&in);
297  return ff_filter_frame(outlink, out);
298 }
299 
300 static const AVFilterPad colorlevels_inputs[] = {
301  {
302  .name = "default",
303  .type = AVMEDIA_TYPE_VIDEO,
304  .filter_frame = filter_frame,
305  .config_props = config_input,
306  },
307  { NULL }
308 };
309 
311  {
312  .name = "default",
313  .type = AVMEDIA_TYPE_VIDEO,
314  },
315  { NULL }
316 };
317 
319  .name = "colorlevels",
320  .description = NULL_IF_CONFIG_SMALL("Adjust the color levels."),
321  .priv_size = sizeof(ColorLevelsContext),
322  .priv_class = &colorlevels_class,
328 };
static const AVFilterPad inputs[]
Definition: af_acontrast.c:193
static const AVFilterPad outputs[]
Definition: af_acontrast.c:203
static int process_command(AVFilterContext *ctx, const char *cmd, const char *args, char *res, int res_len, int flags)
Definition: af_acrusher.c:336
uint8_t pi<< 24) CONV_FUNC_GROUP(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_U8, uint8_t,(*(const uint8_t *) pi - 0x80) *(1.0f/(1<< 7))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_U8, uint8_t,(*(const uint8_t *) pi - 0x80) *(1.0/(1<< 7))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_S16, int16_t,(*(const int16_t *) pi >> 8)+0x80) CONV_FUNC_GROUP(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_S16, int16_t, *(const int16_t *) pi *(1.0f/(1<< 15))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_S16, int16_t, *(const int16_t *) pi *(1.0/(1<< 15))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_S32, int32_t,(*(const int32_t *) pi >> 24)+0x80) CONV_FUNC_GROUP(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_S32, int32_t, *(const int32_t *) pi *(1.0f/(1U<< 31))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_S32, int32_t, *(const int32_t *) pi *(1.0/(1U<< 31))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_FLT, float, av_clip_uint8(lrintf(*(const float *) pi *(1<< 7))+0x80)) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S16, int16_t, AV_SAMPLE_FMT_FLT, float, av_clip_int16(lrintf(*(const float *) pi *(1<< 15)))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_FLT, float, av_clipl_int32(llrintf(*(const float *) pi *(1U<< 31)))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_DBL, double, av_clip_uint8(lrint(*(const double *) pi *(1<< 7))+0x80)) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S16, int16_t, AV_SAMPLE_FMT_DBL, double, av_clip_int16(lrint(*(const double *) pi *(1<< 15)))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_DBL, double, av_clipl_int32(llrint(*(const double *) pi *(1U<< 31)))) #define SET_CONV_FUNC_GROUP(ofmt, ifmt) static void set_generic_function(AudioConvert *ac) { } void ff_audio_convert_free(AudioConvert **ac) { if(! *ac) return;ff_dither_free(&(*ac) ->dc);av_freep(ac);} AudioConvert *ff_audio_convert_alloc(AVAudioResampleContext *avr, enum AVSampleFormat out_fmt, enum AVSampleFormat in_fmt, int channels, int sample_rate, int apply_map) { AudioConvert *ac;int in_planar, out_planar;ac=av_mallocz(sizeof(*ac));if(!ac) return NULL;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);return NULL;} return ac;} 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;} else if(in_planar) ac->func_type=CONV_FUNC_TYPE_INTERLEAVE;else ac->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);return ac;} int ff_audio_convert(AudioConvert *ac, AudioData *out, AudioData *in) { int use_generic=1;int len=in->nb_samples;int p;if(ac->dc) { av_log(ac->avr, AV_LOG_TRACE, "%d samples - audio_convert: %s to %s (dithered)\n", len, av_get_sample_fmt_name(ac->in_fmt), av_get_sample_fmt_name(ac->out_fmt));return ff_convert_dither(ac-> in
uint8_t
int ff_filter_frame(AVFilterLink *link, AVFrame *frame)
Send a frame of data to the next filter.
Definition: avfilter.c:1094
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
int ff_filter_get_nb_threads(AVFilterContext *ctx)
Get number of threads for current filter instance.
Definition: avfilter.c:802
Main libavfilter public API header.
#define flags(name, subs,...)
Definition: cbs_av1.c:561
#define s(width, name)
Definition: cbs_vp9.c:257
#define FFMIN(a, b)
Definition: common.h:105
#define FFMAX(a, b)
Definition: common.h:103
#define av_clip_uint8
Definition: common.h:128
#define av_clip_uint16
Definition: common.h:134
#define NULL
Definition: coverity.c:32
int ff_fill_rgba_map(uint8_t *rgba_map, enum AVPixelFormat pix_fmt)
Definition: drawutils.c:35
misc drawing utilities
static void comp(unsigned char *dst, ptrdiff_t dst_stride, unsigned char *src, ptrdiff_t src_stride, int add)
Definition: eamad.c:85
int
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_DOUBLE
Definition: opt.h:227
#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 AVFILTER_FLAG_SLICE_THREADS
The filter supports multithreading by splitting frames into multiple parts and processing them concur...
Definition: avfilter.h:117
#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
@ AVMEDIA_TYPE_VIDEO
Definition: avutil.h:201
misc image utilities
int i
Definition: input.c:407
const char * arg
Definition: jacosubdec.c:66
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
static enum AVPixelFormat pix_fmts[]
Definition: libkvazaar.c:303
const char * desc
Definition: libsvtav1.c:79
static int slice_end(AVCodecContext *avctx, AVFrame *pict)
Handle slice ends.
Definition: mpeg12dec.c:2033
AVOptions.
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:2538
const AVPixFmtDescriptor * av_pix_fmt_desc_get(enum AVPixelFormat pix_fmt)
Definition: pixdesc.c:2573
#define AV_PIX_FMT_BGR48
Definition: pixfmt.h:390
#define AV_PIX_FMT_RGBA64
Definition: pixfmt.h:389
#define AV_PIX_FMT_RGB48
Definition: pixfmt.h:385
AVPixelFormat
Pixel format.
Definition: pixfmt.h:64
@ AV_PIX_FMT_NONE
Definition: pixfmt.h:65
@ AV_PIX_FMT_RGB24
packed RGB 8:8:8, 24bpp, RGBRGB...
Definition: pixfmt.h:68
@ AV_PIX_FMT_BGR0
packed BGR 8:8:8, 32bpp, BGRXBGRX... X=unused/undefined
Definition: pixfmt.h:240
@ AV_PIX_FMT_ARGB
packed ARGB 8:8:8:8, 32bpp, ARGBARGB...
Definition: pixfmt.h:92
@ AV_PIX_FMT_BGRA
packed BGRA 8:8:8:8, 32bpp, BGRABGRA...
Definition: pixfmt.h:95
@ AV_PIX_FMT_ABGR
packed ABGR 8:8:8:8, 32bpp, ABGRABGR...
Definition: pixfmt.h:94
@ AV_PIX_FMT_0BGR
packed BGR 8:8:8, 32bpp, XBGRXBGR... X=unused/undefined
Definition: pixfmt.h:239
@ AV_PIX_FMT_RGBA
packed RGBA 8:8:8:8, 32bpp, RGBARGBA...
Definition: pixfmt.h:93
@ AV_PIX_FMT_RGB0
packed RGB 8:8:8, 32bpp, RGBXRGBX... X=unused/undefined
Definition: pixfmt.h:238
@ AV_PIX_FMT_BGR24
packed RGB 8:8:8, 24bpp, BGRBGR...
Definition: pixfmt.h:69
@ AV_PIX_FMT_0RGB
packed RGB 8:8:8, 32bpp, XRGBXRGB... X=unused/undefined
Definition: pixfmt.h:237
#define AV_PIX_FMT_BGRA64
Definition: pixfmt.h:394
#define td
Definition: regdef.h:70
Describe the class of an AVClass context structure.
Definition: log.h:67
An instance of a filter.
Definition: avfilter.h:341
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
AVFormatInternal * internal
An opaque field for libavformat internal usage.
Definition: avformat.h:1699
This structure describes decoded (raw) audio or video data.
Definition: frame.h:318
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(* colorlevels_slice)(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
double out_min
double in_min
double out_max
double in_max
Used for passing data between threads.
Definition: dsddec.c:67
int src_linesize
Definition: vf_bm3d.c:57
float coeff[4]
uint8_t * dstrow
const uint8_t * srcrow
#define lrint
Definition: tablegen.h:53
#define src
Definition: vp8dsp.c:255
FILE * out
Definition: movenc.c:54
AVFormatContext * ctx
Definition: movenc.c:48
#define LOAD_COMMON
static const AVOption colorlevels_options[]
#define B
static int colorlevels_slice_8(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
static int query_formats(AVFilterContext *ctx)
#define R
static int config_input(AVFilterLink *inlink)
#define FLAGS
AVFilter ff_vf_colorlevels
static const AVFilterPad colorlevels_outputs[]
static int filter_frame(AVFilterLink *inlink, AVFrame *in)
static int colorlevels_slice_16(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
#define A
AVFILTER_DEFINE_CLASS(colorlevels)
#define OFFSET(x)
#define G
static const AVFilterPad colorlevels_inputs[]
const char * r
Definition: vf_curves.c:116
static const double coeff[2][5]
Definition: vf_owdenoise.c:73
static const uint8_t offset[127][2]
Definition: vf_spp.c:107
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