FFmpeg
vf_midequalizer.c
Go to the documentation of this file.
1 /*
2  * Copyright (c) 2017 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/pixdesc.h"
23 #include "libavutil/opt.h"
24 #include "avfilter.h"
25 #include "formats.h"
26 #include "internal.h"
27 #include "video.h"
28 #include "framesync.h"
29 
30 typedef struct MidEqualizerContext {
31  const AVClass *class;
32  int width[2][4], height[2][4];
33  int nb_planes;
34  int planes;
36  float *histogram[2];
37  unsigned *cchange;
39 
40  void (*midequalizer)(const uint8_t *in0, const uint8_t *in1,
41  uint8_t *dst,
42  ptrdiff_t linesize1, ptrdiff_t linesize2,
43  ptrdiff_t dlinesize,
44  int w0, int h0,
45  int w1, int h1,
46  float *histogram1, float *histogram2,
47  unsigned *cchange, size_t hsize);
49 
50 #define OFFSET(x) offsetof(MidEqualizerContext, x)
51 #define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM
52 
53 static const AVOption midequalizer_options[] = {
54  { "planes", "set planes", OFFSET(planes), AV_OPT_TYPE_INT, {.i64=0xF}, 0, 0xF, FLAGS },
55  { NULL }
56 };
57 
58 AVFILTER_DEFINE_CLASS(midequalizer);
59 
61 {
62  static const enum AVPixelFormat pix_fmts[] = {
84  };
85 
87 }
88 
90 {
91  AVFilterContext *ctx = fs->parent;
92  MidEqualizerContext *s = fs->opaque;
93  AVFilterLink *outlink = ctx->outputs[0];
94  AVFrame *out, *in0, *in1;
95  int ret;
96 
97  if ((ret = ff_framesync_get_frame(&s->fs, 0, &in0, 0)) < 0 ||
98  (ret = ff_framesync_get_frame(&s->fs, 1, &in1, 0)) < 0)
99  return ret;
100 
101  if (ctx->is_disabled) {
102  out = av_frame_clone(in0);
103  if (!out)
104  return AVERROR(ENOMEM);
105  } else {
106  int p;
107 
108  out = ff_get_video_buffer(outlink, outlink->w, outlink->h);
109  if (!out)
110  return AVERROR(ENOMEM);
111  av_frame_copy_props(out, in0);
112 
113  for (p = 0; p < s->nb_planes; p++) {
114  if (!((1 << p) & s->planes)) {
115  av_image_copy_plane(out->data[p], out->linesize[p], in0->data[p], in0->linesize[p],
116  s->width[0][p] * (1 + (s->histogram_size > 256)), s->height[0][p]);
117  continue;
118  }
119 
120  s->midequalizer(in0->data[p], in1->data[p],
121  out->data[p],
122  in0->linesize[p], in1->linesize[p],
123  out->linesize[p],
124  s->width[0][p], s->height[0][p],
125  s->width[1][p], s->height[1][p],
126  s->histogram[0], s->histogram[1],
127  s->cchange, s->histogram_size);
128  }
129  }
130  out->pts = av_rescale_q(s->fs.pts, s->fs.time_base, outlink->time_base);
131 
132  return ff_filter_frame(outlink, out);
133 }
134 
135 static void compute_histogram8(const uint8_t *src, ptrdiff_t linesize,
136  int w, int h, float *histogram, size_t hsize)
137 {
138  int y, x;
139 
140  memset(histogram, 0, hsize * sizeof(*histogram));
141 
142  for (y = 0; y < h; y++) {
143  for (x = 0; x < w; x++) {
144  histogram[src[x]] += 1;
145  }
146  src += linesize;
147  }
148 
149  for (x = 0; x < hsize - 1; x++) {
150  histogram[x + 1] += histogram[x];
151  histogram[x] /= hsize;
152  }
153  histogram[x] /= hsize;
154 }
155 
156 static void compute_histogram16(const uint16_t *src, ptrdiff_t linesize,
157  int w, int h, float *histogram, size_t hsize)
158 {
159  int y, x;
160 
161  memset(histogram, 0, hsize * sizeof(*histogram));
162 
163  for (y = 0; y < h; y++) {
164  for (x = 0; x < w; x++) {
165  histogram[src[x]] += 1;
166  }
167  src += linesize;
168  }
169 
170  for (x = 0; x < hsize - 1; x++) {
171  histogram[x + 1] += histogram[x];
172  histogram[x] /= hsize;
173  }
174  histogram[x] /= hsize;
175 }
176 
177 static void compute_contrast_change(float *histogram1, float *histogram2,
178  unsigned *cchange, size_t hsize)
179 {
180  int i;
181 
182  for (i = 0; i < hsize; i++) {
183  int j;
184 
185  for (j = 0; j < hsize && histogram2[j] < histogram1[i]; j++);
186 
187  cchange[i] = (i + j) / 2;
188  }
189 }
190 
191 static void midequalizer8(const uint8_t *in0, const uint8_t *in1,
192  uint8_t *dst,
193  ptrdiff_t linesize1, ptrdiff_t linesize2,
194  ptrdiff_t dlinesize,
195  int w0, int h0,
196  int w1, int h1,
197  float *histogram1, float *histogram2,
198  unsigned *cchange,
199  size_t hsize)
200 {
201  int x, y;
202 
203  compute_histogram8(in0, linesize1, w0, h0, histogram1, hsize);
204  compute_histogram8(in1, linesize2, w1, h1, histogram2, hsize);
205 
206  compute_contrast_change(histogram1, histogram2, cchange, hsize);
207 
208  for (y = 0; y < h0; y++) {
209  for (x = 0; x < w0; x++) {
210  dst[x] = av_clip_uint8(cchange[in0[x]]);
211  }
212  dst += dlinesize;
213  in0 += linesize1;
214  }
215 }
216 
217 static void midequalizer16(const uint8_t *in0, const uint8_t *in1,
218  uint8_t *dst,
219  ptrdiff_t linesize1, ptrdiff_t linesize2,
220  ptrdiff_t dlinesize,
221  int w0, int h0,
222  int w1, int h1,
223  float *histogram1, float *histogram2,
224  unsigned *cchange,
225  size_t hsize)
226 {
227  const uint16_t *i = (const uint16_t *)in0;
228  uint16_t *d = (uint16_t *)dst;
229  int x, y;
230 
231  compute_histogram16(i, linesize1 / 2, w0, h0, histogram1, hsize);
232  compute_histogram16((const uint16_t *)in1, linesize2 / 2, w1, h1, histogram2, hsize);
233 
234  compute_contrast_change(histogram1, histogram2, cchange, hsize);
235 
236  for (y = 0; y < h0; y++) {
237  for (x = 0; x < w0; x++) {
238  d[x] = cchange[i[x]];
239  }
240  d += dlinesize / 2;
241  i += linesize1 / 2;
242  }
243 }
244 
246 {
247  AVFilterContext *ctx = inlink->dst;
248  MidEqualizerContext *s = ctx->priv;
250  int vsub, hsub;
251 
252  s->nb_planes = av_pix_fmt_count_planes(inlink->format);
253 
254  hsub = desc->log2_chroma_w;
255  vsub = desc->log2_chroma_h;
256 
257  s->height[0][0] = s->height[0][3] = inlink->h;
258  s->width[0][0] = s->width[0][3] = inlink->w;
259  s->height[0][1] = s->height[0][2] = AV_CEIL_RSHIFT(inlink->h, vsub);
260  s->width[0][1] = s->width[0][2] = AV_CEIL_RSHIFT(inlink->w, hsub);
261 
262  s->histogram_size = 1 << desc->comp[0].depth;
263 
264  s->histogram[0] = av_calloc(s->histogram_size, sizeof(float));
265  s->histogram[1] = av_calloc(s->histogram_size, sizeof(float));
266  s->cchange = av_calloc(s->histogram_size, sizeof(unsigned));
267  if (!s->histogram[0] || !s->histogram[1] || !s->cchange)
268  return AVERROR(ENOMEM);
269 
270  if (s->histogram_size == 256) {
271  s->midequalizer = midequalizer8;
272  } else {
273  s->midequalizer = midequalizer16;
274  }
275 
276  return 0;
277 }
278 
280 {
281  AVFilterContext *ctx = inlink->dst;
282  MidEqualizerContext *s = ctx->priv;
284  int vsub, hsub;
285 
286  s->nb_planes = av_pix_fmt_count_planes(inlink->format);
287 
288  hsub = desc->log2_chroma_w;
289  vsub = desc->log2_chroma_h;
290 
291  s->height[1][0] = s->height[1][3] = inlink->h;
292  s->width[1][0] = s->width[1][3] = inlink->w;
293  s->height[1][1] = s->height[1][2] = AV_CEIL_RSHIFT(inlink->h, vsub);
294  s->width[1][1] = s->width[1][2] = AV_CEIL_RSHIFT(inlink->w, hsub);
295 
296  return 0;
297 }
298 
299 static int config_output(AVFilterLink *outlink)
300 {
301  AVFilterContext *ctx = outlink->src;
302  MidEqualizerContext *s = ctx->priv;
303  AVFilterLink *in0 = ctx->inputs[0];
304  AVFilterLink *in1 = ctx->inputs[1];
305  FFFrameSyncIn *in;
306  int ret;
307 
308  outlink->w = in0->w;
309  outlink->h = in0->h;
311  outlink->frame_rate = in0->frame_rate;
312 
313  if ((ret = ff_framesync_init(&s->fs, ctx, 2)) < 0)
314  return ret;
315 
316  in = s->fs.in;
317  in[0].time_base = in0->time_base;
318  in[1].time_base = in1->time_base;
319  in[0].sync = 1;
320  in[0].before = EXT_STOP;
321  in[0].after = EXT_INFINITY;
322  in[1].sync = 1;
323  in[1].before = EXT_STOP;
324  in[1].after = EXT_INFINITY;
325  s->fs.opaque = s;
326  s->fs.on_event = process_frame;
327 
328  ret = ff_framesync_configure(&s->fs);
329  outlink->time_base = s->fs.time_base;
330 
331  return ret;
332 }
333 
335 {
336  MidEqualizerContext *s = ctx->priv;
337  return ff_framesync_activate(&s->fs);
338 }
339 
341 {
342  MidEqualizerContext *s = ctx->priv;
343 
344  ff_framesync_uninit(&s->fs);
345  av_freep(&s->histogram[0]);
346  av_freep(&s->histogram[1]);
347  av_freep(&s->cchange);
348 }
349 
351  {
352  .name = "in0",
353  .type = AVMEDIA_TYPE_VIDEO,
354  .config_props = config_input0,
355  },
356  {
357  .name = "in1",
358  .type = AVMEDIA_TYPE_VIDEO,
359  .config_props = config_input1,
360  },
361 };
362 
364  {
365  .name = "default",
366  .type = AVMEDIA_TYPE_VIDEO,
367  .config_props = config_output,
368  },
369 };
370 
372  .name = "midequalizer",
373  .description = NULL_IF_CONFIG_SMALL("Apply Midway Equalization."),
374  .priv_size = sizeof(MidEqualizerContext),
375  .uninit = uninit,
377  .activate = activate,
380  .priv_class = &midequalizer_class,
382 };
MidEqualizerContext::planes
int planes
Definition: vf_midequalizer.c:34
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_PIX_FMT_YUVA422P16
#define AV_PIX_FMT_YUVA422P16
Definition: pixfmt.h:434
AV_PIX_FMT_GBRAP16
#define AV_PIX_FMT_GBRAP16
Definition: pixfmt.h:413
FFFrameSyncIn::time_base
AVRational time_base
Time base for the incoming frames.
Definition: framesync.h:96
ff_framesync_configure
int ff_framesync_configure(FFFrameSync *fs)
Configure a frame sync structure.
Definition: framesync.c:119
AVPixelFormat
AVPixelFormat
Pixel format.
Definition: pixfmt.h:64
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
ff_framesync_uninit
void ff_framesync_uninit(FFFrameSync *fs)
Free all memory currently allocated.
Definition: framesync.c:285
out
FILE * out
Definition: movenc.c:54
ff_vf_midequalizer
const AVFilter ff_vf_midequalizer
Definition: vf_midequalizer.c:371
ff_filter_frame
int ff_filter_frame(AVFilterLink *link, AVFrame *frame)
Send a frame of data to the next filter.
Definition: avfilter.c:1019
av_pix_fmt_desc_get
const AVPixFmtDescriptor * av_pix_fmt_desc_get(enum AVPixelFormat pix_fmt)
Definition: pixdesc.c:2564
ff_framesync_get_frame
int ff_framesync_get_frame(FFFrameSync *fs, unsigned in, AVFrame **rframe, unsigned get)
Get the current frame in an input.
Definition: framesync.c:248
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
config_input1
static int config_input1(AVFilterLink *inlink)
Definition: vf_midequalizer.c:279
AV_PIX_FMT_YUVA422P9
#define AV_PIX_FMT_YUVA422P9
Definition: pixfmt.h:426
AVFrame
This structure describes decoded (raw) audio or video data.
Definition: frame.h:303
pixdesc.h
AV_PIX_FMT_YUVA420P16
#define AV_PIX_FMT_YUVA420P16
Definition: pixfmt.h:433
w
uint8_t w
Definition: llviddspenc.c:38
OFFSET
#define OFFSET(x)
Definition: vf_midequalizer.c:50
AV_PIX_FMT_YUVA420P10
#define AV_PIX_FMT_YUVA420P10
Definition: pixfmt.h:428
AVOption
AVOption.
Definition: opt.h:247
midequalizer_inputs
static const AVFilterPad midequalizer_inputs[]
Definition: vf_midequalizer.c:350
AV_PIX_FMT_YUV420P10
#define AV_PIX_FMT_YUV420P10
Definition: pixfmt.h:391
MidEqualizerContext::histogram
float * histogram[2]
Definition: vf_midequalizer.c:36
query_formats
static int query_formats(AVFilterContext *ctx)
Definition: vf_midequalizer.c:60
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
FFFrameSync
Frame sync structure.
Definition: framesync.h:146
EXT_INFINITY
@ EXT_INFINITY
Extend the frame to infinity.
Definition: framesync.h:75
video.h
AV_PIX_FMT_YUVA422P10
#define AV_PIX_FMT_YUVA422P10
Definition: pixfmt.h:429
activate
static int activate(AVFilterContext *ctx)
Definition: vf_midequalizer.c:334
MidEqualizerContext
Definition: vf_midequalizer.c:30
AV_PIX_FMT_GRAY9
#define AV_PIX_FMT_GRAY9
Definition: pixfmt.h:371
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
hsub
static void hsub(htype *dst, const htype *src, int bins)
Definition: vf_median.c:74
formats.h
av_pix_fmt_count_planes
int av_pix_fmt_count_planes(enum AVPixelFormat pix_fmt)
Definition: pixdesc.c:2604
AV_PIX_FMT_YUVA420P9
#define AV_PIX_FMT_YUVA420P9
Definition: pixfmt.h:425
EXT_STOP
@ EXT_STOP
Completely stop all streams with this one.
Definition: framesync.h:65
AV_PIX_FMT_GBRP14
#define AV_PIX_FMT_GBRP14
Definition: pixfmt.h:409
AV_PIX_FMT_GBRAP
@ AV_PIX_FMT_GBRAP
planar GBRA 4:4:4:4 32bpp
Definition: pixfmt.h:205
AV_PIX_FMT_GBRP10
#define AV_PIX_FMT_GBRP10
Definition: pixfmt.h:407
AV_PIX_FMT_YUVA444P16
#define AV_PIX_FMT_YUVA444P16
Definition: pixfmt.h:435
FFFrameSyncIn
Input stream structure.
Definition: framesync.h:81
MidEqualizerContext::fs
FFFrameSync fs
Definition: vf_midequalizer.c:38
AV_PIX_FMT_YUV422P9
#define AV_PIX_FMT_YUV422P9
Definition: pixfmt.h:389
AV_PIX_FMT_GRAY16
#define AV_PIX_FMT_GRAY16
Definition: pixfmt.h:375
MidEqualizerContext::histogram_size
int histogram_size
Definition: vf_midequalizer.c:35
FFFrameSyncIn::sync
unsigned sync
Synchronization level: frames on input at the highest sync level will generate output frame events.
Definition: framesync.h:139
AVFilterPad
A filter pad used for either input or output.
Definition: internal.h:50
AV_PIX_FMT_YUV444P10
#define AV_PIX_FMT_YUV444P10
Definition: pixfmt.h:394
AV_PIX_FMT_YUVJ411P
@ AV_PIX_FMT_YUVJ411P
planar YUV 4:1:1, 12bpp, (1 Cr & Cb sample per 4x1 Y samples) full scale (JPEG), deprecated in favor ...
Definition: pixfmt.h:248
planes
static const struct @318 planes[]
midequalizer8
static void midequalizer8(const uint8_t *in0, const uint8_t *in1, uint8_t *dst, ptrdiff_t linesize1, ptrdiff_t linesize2, ptrdiff_t dlinesize, int w0, int h0, int w1, int h1, float *histogram1, float *histogram2, unsigned *cchange, size_t hsize)
Definition: vf_midequalizer.c:191
av_cold
#define av_cold
Definition: attributes.h:90
AV_PIX_FMT_YUV422P16
#define AV_PIX_FMT_YUV422P16
Definition: pixfmt.h:403
config_output
static int config_output(AVFilterLink *outlink)
Definition: vf_midequalizer.c:299
AV_PIX_FMT_YUVJ422P
@ AV_PIX_FMT_YUVJ422P
planar YUV 4:2:2, 16bpp, full scale (JPEG), deprecated in favor of AV_PIX_FMT_YUV422P and setting col...
Definition: pixfmt.h:79
AV_PIX_FMT_GBRAP10
#define AV_PIX_FMT_GBRAP10
Definition: pixfmt.h:411
s
#define s(width, name)
Definition: cbs_vp9.c:257
midequalizer16
static void midequalizer16(const uint8_t *in0, const uint8_t *in1, uint8_t *dst, ptrdiff_t linesize1, ptrdiff_t linesize2, ptrdiff_t dlinesize, int w0, int h0, int w1, int h1, float *histogram1, float *histogram2, unsigned *cchange, size_t hsize)
Definition: vf_midequalizer.c:217
AV_PIX_FMT_GBRAP12
#define AV_PIX_FMT_GBRAP12
Definition: pixfmt.h:412
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
AV_PIX_FMT_YUV444P16
#define AV_PIX_FMT_YUV444P16
Definition: pixfmt.h:404
AV_CEIL_RSHIFT
#define AV_CEIL_RSHIFT(a, b)
Definition: common.h:51
ff_set_common_formats_from_list
int ff_set_common_formats_from_list(AVFilterContext *ctx, const int *fmts)
Equivalent to ff_set_common_formats(ctx, ff_make_format_list(fmts))
Definition: formats.c:698
AVFILTER_DEFINE_CLASS
AVFILTER_DEFINE_CLASS(midequalizer)
pix_fmts
static enum AVPixelFormat pix_fmts[]
Definition: libkvazaar.c:290
AV_PIX_FMT_YUVA444P12
#define AV_PIX_FMT_YUVA444P12
Definition: pixfmt.h:432
AV_PIX_FMT_YUV420P9
#define AV_PIX_FMT_YUV420P9
Definition: pixfmt.h:388
AV_PIX_FMT_YUV420P16
#define AV_PIX_FMT_YUV420P16
Definition: pixfmt.h:402
ctx
AVFormatContext * ctx
Definition: movenc.c:48
FLAGS
#define FLAGS
Definition: vf_midequalizer.c:51
AV_PIX_FMT_GRAY14
#define AV_PIX_FMT_GRAY14
Definition: pixfmt.h:374
av_frame_clone
AVFrame * av_frame_clone(const AVFrame *src)
Create a new frame that references the same data as src.
Definition: frame.c:424
av_rescale_q
int64_t av_rescale_q(int64_t a, AVRational bq, AVRational cq)
Rescale a 64-bit integer by 2 rational numbers.
Definition: mathematics.c:141
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
FILTER_INPUTS
#define FILTER_INPUTS(array)
Definition: internal.h:152
AV_PIX_FMT_YUVJ444P
@ AV_PIX_FMT_YUVJ444P
planar YUV 4:4:4, 24bpp, full scale (JPEG), deprecated in favor of AV_PIX_FMT_YUV444P and setting col...
Definition: pixfmt.h:80
AV_PIX_FMT_GRAY10
#define AV_PIX_FMT_GRAY10
Definition: pixfmt.h:372
AV_PIX_FMT_GBRP16
#define AV_PIX_FMT_GBRP16
Definition: pixfmt.h:410
AVClass
Describe the class of an AVClass context structure.
Definition: log.h:66
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
fs
#define fs(width, name, subs,...)
Definition: cbs_vp9.c:259
AV_PIX_FMT_YUVJ420P
@ AV_PIX_FMT_YUVJ420P
planar YUV 4:2:0, 12bpp, full scale (JPEG), deprecated in favor of AV_PIX_FMT_YUV420P and setting col...
Definition: pixfmt.h:78
src
#define src
Definition: vp8dsp.c:255
midequalizer_outputs
static const AVFilterPad midequalizer_outputs[]
Definition: vf_midequalizer.c:363
config_input0
static int config_input0(AVFilterLink *inlink)
Definition: vf_midequalizer.c:245
AV_PIX_FMT_YUV422P10
#define AV_PIX_FMT_YUV422P10
Definition: pixfmt.h:392
AV_PIX_FMT_GRAY8
@ AV_PIX_FMT_GRAY8
Y , 8bpp.
Definition: pixfmt.h:74
AV_PIX_FMT_GBRP9
#define AV_PIX_FMT_GBRP9
Definition: pixfmt.h:406
MidEqualizerContext::height
int height[2][4]
Definition: vf_midequalizer.c:32
MidEqualizerContext::midequalizer
void(* midequalizer)(const uint8_t *in0, const uint8_t *in1, uint8_t *dst, ptrdiff_t linesize1, ptrdiff_t linesize2, ptrdiff_t dlinesize, int w0, int h0, int w1, int h1, float *histogram1, float *histogram2, unsigned *cchange, size_t hsize)
Definition: vf_midequalizer.c:40
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
AV_PIX_FMT_YUV422P12
#define AV_PIX_FMT_YUV422P12
Definition: pixfmt.h:396
AV_PIX_FMT_YUV444P12
#define AV_PIX_FMT_YUV444P12
Definition: pixfmt.h:398
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
internal.h
compute_contrast_change
static void compute_contrast_change(float *histogram1, float *histogram2, unsigned *cchange, size_t hsize)
Definition: vf_midequalizer.c:177
i
#define i(width, name, range_min, range_max)
Definition: cbs_h2645.c:271
AV_PIX_FMT_GBRP12
#define AV_PIX_FMT_GBRP12
Definition: pixfmt.h:408
AV_PIX_FMT_YUVJ440P
@ AV_PIX_FMT_YUVJ440P
planar YUV 4:4:0 full scale (JPEG), deprecated in favor of AV_PIX_FMT_YUV440P and setting color_range
Definition: pixfmt.h:100
AVFilterPad::name
const char * name
Pad name.
Definition: internal.h:56
MidEqualizerContext::width
int width[2][4]
Definition: vf_midequalizer.c:32
av_calloc
void * av_calloc(size_t nmemb, size_t size)
Definition: mem.c:271
AV_PIX_FMT_YUV444P9
#define AV_PIX_FMT_YUV444P9
Definition: pixfmt.h:390
AVFilter
Filter definition.
Definition: avfilter.h:149
ret
ret
Definition: filter_design.txt:187
AV_PIX_FMT_YUVA444P9
#define AV_PIX_FMT_YUVA444P9
Definition: pixfmt.h:427
ff_framesync_init
int ff_framesync_init(FFFrameSync *fs, AVFilterContext *parent, unsigned nb_in)
Initialize a frame sync structure.
Definition: framesync.c:79
process_frame
static int process_frame(FFFrameSync *fs)
Definition: vf_midequalizer.c:89
AV_PIX_FMT_YUV420P12
#define AV_PIX_FMT_YUV420P12
Definition: pixfmt.h:395
AV_PIX_FMT_YUV422P14
#define AV_PIX_FMT_YUV422P14
Definition: pixfmt.h:400
compute_histogram8
static void compute_histogram8(const uint8_t *src, ptrdiff_t linesize, int w, int h, float *histogram, size_t hsize)
Definition: vf_midequalizer.c:135
FFFrameSyncIn::before
enum FFFrameSyncExtMode before
Extrapolation mode for timestamps before the first frame.
Definition: framesync.h:86
framesync.h
AV_PIX_FMT_NONE
@ AV_PIX_FMT_NONE
Definition: pixfmt.h:65
AV_PIX_FMT_YUVA422P12
#define AV_PIX_FMT_YUVA422P12
Definition: pixfmt.h:431
AV_OPT_TYPE_INT
@ AV_OPT_TYPE_INT
Definition: opt.h:224
avfilter.h
MidEqualizerContext::cchange
unsigned * cchange
Definition: vf_midequalizer.c:37
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
uninit
static av_cold void uninit(AVFilterContext *ctx)
Definition: vf_midequalizer.c:340
AVFilterContext
An instance of a filter.
Definition: avfilter.h:346
AV_PIX_FMT_GBRP
@ AV_PIX_FMT_GBRP
planar GBR 4:4:4 24bpp
Definition: pixfmt.h:158
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
midequalizer_options
static const AVOption midequalizer_options[]
Definition: vf_midequalizer.c:53
AVPixFmtDescriptor
Descriptor that unambiguously describes how the bits of a pixel are stored in the up to 4 data planes...
Definition: pixdesc.h:69
compute_histogram16
static void compute_histogram16(const uint16_t *src, ptrdiff_t linesize, int w, int h, float *histogram, size_t hsize)
Definition: vf_midequalizer.c:156
FILTER_OUTPUTS
#define FILTER_OUTPUTS(array)
Definition: internal.h:153
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
d
d
Definition: ffmpeg_filter.c:156
AVFILTER_FLAG_SUPPORT_TIMELINE_INTERNAL
#define AVFILTER_FLAG_SUPPORT_TIMELINE_INTERNAL
Same as AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC, except that the filter will have its filter_frame() c...
Definition: avfilter.h:138
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_YUV410P
@ AV_PIX_FMT_YUV410P
planar YUV 4:1:0, 9bpp, (1 Cr & Cb sample per 4x4 Y samples)
Definition: pixfmt.h:72
FFFrameSyncIn::after
enum FFFrameSyncExtMode after
Extrapolation mode for timestamps after the last frame.
Definition: framesync.h:91
h
h
Definition: vp9dsp_template.c:2038
AV_PIX_FMT_YUV444P14
#define AV_PIX_FMT_YUV444P14
Definition: pixfmt.h:401
ff_framesync_activate
int ff_framesync_activate(FFFrameSync *fs)
Examine the frames in the filter's input and try to produce output.
Definition: framesync.c:336
AV_PIX_FMT_GRAY12
#define AV_PIX_FMT_GRAY12
Definition: pixfmt.h:373
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
AV_PIX_FMT_YUV420P14
#define AV_PIX_FMT_YUV420P14
Definition: pixfmt.h:399
MidEqualizerContext::nb_planes
int nb_planes
Definition: vf_midequalizer.c:33