FFmpeg
vf_midequalizer.c
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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 
60 static const enum AVPixelFormat pix_fmts[] = {
82 };
83 
85 {
86  AVFilterContext *ctx = fs->parent;
87  MidEqualizerContext *s = fs->opaque;
88  AVFilterLink *outlink = ctx->outputs[0];
89  AVFrame *out, *in0, *in1;
90  int ret;
91 
92  if ((ret = ff_framesync_get_frame(&s->fs, 0, &in0, 0)) < 0 ||
93  (ret = ff_framesync_get_frame(&s->fs, 1, &in1, 0)) < 0)
94  return ret;
95 
96  if (ctx->is_disabled) {
97  out = av_frame_clone(in0);
98  if (!out)
99  return AVERROR(ENOMEM);
100  } else {
101  int p;
102 
103  out = ff_get_video_buffer(outlink, outlink->w, outlink->h);
104  if (!out)
105  return AVERROR(ENOMEM);
106  av_frame_copy_props(out, in0);
107 
108  for (p = 0; p < s->nb_planes; p++) {
109  if (!((1 << p) & s->planes)) {
110  av_image_copy_plane(out->data[p], out->linesize[p], in0->data[p], in0->linesize[p],
111  s->width[0][p] * (1 + (s->histogram_size > 256)), s->height[0][p]);
112  continue;
113  }
114 
115  s->midequalizer(in0->data[p], in1->data[p],
116  out->data[p],
117  in0->linesize[p], in1->linesize[p],
118  out->linesize[p],
119  s->width[0][p], s->height[0][p],
120  s->width[1][p], s->height[1][p],
121  s->histogram[0], s->histogram[1],
122  s->cchange, s->histogram_size);
123  }
124  }
125  out->pts = av_rescale_q(s->fs.pts, s->fs.time_base, outlink->time_base);
126 
127  return ff_filter_frame(outlink, out);
128 }
129 
130 static void compute_histogram8(const uint8_t *src, ptrdiff_t linesize,
131  int w, int h, float *histogram, size_t hsize)
132 {
133  int y, x;
134 
135  memset(histogram, 0, hsize * sizeof(*histogram));
136 
137  for (y = 0; y < h; y++) {
138  for (x = 0; x < w; x++) {
139  histogram[src[x]] += 1;
140  }
141  src += linesize;
142  }
143 
144  for (x = 0; x < hsize - 1; x++) {
145  histogram[x + 1] += histogram[x];
146  histogram[x] /= hsize;
147  }
148  histogram[x] /= hsize;
149 }
150 
151 static void compute_histogram16(const uint16_t *src, ptrdiff_t linesize,
152  int w, int h, float *histogram, size_t hsize)
153 {
154  int y, x;
155 
156  memset(histogram, 0, hsize * sizeof(*histogram));
157 
158  for (y = 0; y < h; y++) {
159  for (x = 0; x < w; x++) {
160  histogram[src[x]] += 1;
161  }
162  src += linesize;
163  }
164 
165  for (x = 0; x < hsize - 1; x++) {
166  histogram[x + 1] += histogram[x];
167  histogram[x] /= hsize;
168  }
169  histogram[x] /= hsize;
170 }
171 
172 static void compute_contrast_change(float *histogram1, float *histogram2,
173  unsigned *cchange, size_t hsize)
174 {
175  int i;
176 
177  for (i = 0; i < hsize; i++) {
178  int j;
179 
180  for (j = 0; j < hsize && histogram2[j] < histogram1[i]; j++);
181 
182  cchange[i] = (i + j) / 2;
183  }
184 }
185 
186 static void midequalizer8(const uint8_t *in0, const uint8_t *in1,
187  uint8_t *dst,
188  ptrdiff_t linesize1, ptrdiff_t linesize2,
189  ptrdiff_t dlinesize,
190  int w0, int h0,
191  int w1, int h1,
192  float *histogram1, float *histogram2,
193  unsigned *cchange,
194  size_t hsize)
195 {
196  int x, y;
197 
198  compute_histogram8(in0, linesize1, w0, h0, histogram1, hsize);
199  compute_histogram8(in1, linesize2, w1, h1, histogram2, hsize);
200 
201  compute_contrast_change(histogram1, histogram2, cchange, hsize);
202 
203  for (y = 0; y < h0; y++) {
204  for (x = 0; x < w0; x++) {
205  dst[x] = av_clip_uint8(cchange[in0[x]]);
206  }
207  dst += dlinesize;
208  in0 += linesize1;
209  }
210 }
211 
212 static void midequalizer16(const uint8_t *in0, const uint8_t *in1,
213  uint8_t *dst,
214  ptrdiff_t linesize1, ptrdiff_t linesize2,
215  ptrdiff_t dlinesize,
216  int w0, int h0,
217  int w1, int h1,
218  float *histogram1, float *histogram2,
219  unsigned *cchange,
220  size_t hsize)
221 {
222  const uint16_t *i = (const uint16_t *)in0;
223  uint16_t *d = (uint16_t *)dst;
224  int x, y;
225 
226  compute_histogram16(i, linesize1 / 2, w0, h0, histogram1, hsize);
227  compute_histogram16((const uint16_t *)in1, linesize2 / 2, w1, h1, histogram2, hsize);
228 
229  compute_contrast_change(histogram1, histogram2, cchange, hsize);
230 
231  for (y = 0; y < h0; y++) {
232  for (x = 0; x < w0; x++) {
233  d[x] = cchange[i[x]];
234  }
235  d += dlinesize / 2;
236  i += linesize1 / 2;
237  }
238 }
239 
241 {
242  AVFilterContext *ctx = inlink->dst;
243  MidEqualizerContext *s = ctx->priv;
245  int vsub, hsub;
246 
247  s->nb_planes = av_pix_fmt_count_planes(inlink->format);
248 
249  hsub = desc->log2_chroma_w;
250  vsub = desc->log2_chroma_h;
251 
252  s->height[0][0] = s->height[0][3] = inlink->h;
253  s->width[0][0] = s->width[0][3] = inlink->w;
254  s->height[0][1] = s->height[0][2] = AV_CEIL_RSHIFT(inlink->h, vsub);
255  s->width[0][1] = s->width[0][2] = AV_CEIL_RSHIFT(inlink->w, hsub);
256 
257  s->histogram_size = 1 << desc->comp[0].depth;
258 
259  s->histogram[0] = av_calloc(s->histogram_size, sizeof(float));
260  s->histogram[1] = av_calloc(s->histogram_size, sizeof(float));
261  s->cchange = av_calloc(s->histogram_size, sizeof(unsigned));
262  if (!s->histogram[0] || !s->histogram[1] || !s->cchange)
263  return AVERROR(ENOMEM);
264 
265  if (s->histogram_size == 256) {
266  s->midequalizer = midequalizer8;
267  } else {
268  s->midequalizer = midequalizer16;
269  }
270 
271  return 0;
272 }
273 
275 {
276  AVFilterContext *ctx = inlink->dst;
277  MidEqualizerContext *s = ctx->priv;
279  int vsub, hsub;
280 
281  s->nb_planes = av_pix_fmt_count_planes(inlink->format);
282 
283  hsub = desc->log2_chroma_w;
284  vsub = desc->log2_chroma_h;
285 
286  s->height[1][0] = s->height[1][3] = inlink->h;
287  s->width[1][0] = s->width[1][3] = inlink->w;
288  s->height[1][1] = s->height[1][2] = AV_CEIL_RSHIFT(inlink->h, vsub);
289  s->width[1][1] = s->width[1][2] = AV_CEIL_RSHIFT(inlink->w, hsub);
290 
291  return 0;
292 }
293 
294 static int config_output(AVFilterLink *outlink)
295 {
296  AVFilterContext *ctx = outlink->src;
297  MidEqualizerContext *s = ctx->priv;
298  AVFilterLink *in0 = ctx->inputs[0];
299  AVFilterLink *in1 = ctx->inputs[1];
300  FFFrameSyncIn *in;
301  int ret;
302 
303  outlink->w = in0->w;
304  outlink->h = in0->h;
306  outlink->frame_rate = in0->frame_rate;
307 
308  if ((ret = ff_framesync_init(&s->fs, ctx, 2)) < 0)
309  return ret;
310 
311  in = s->fs.in;
312  in[0].time_base = in0->time_base;
313  in[1].time_base = in1->time_base;
314  in[0].sync = 1;
315  in[0].before = EXT_STOP;
316  in[0].after = EXT_INFINITY;
317  in[1].sync = 1;
318  in[1].before = EXT_STOP;
319  in[1].after = EXT_INFINITY;
320  s->fs.opaque = s;
321  s->fs.on_event = process_frame;
322 
323  ret = ff_framesync_configure(&s->fs);
324  outlink->time_base = s->fs.time_base;
325 
326  return ret;
327 }
328 
330 {
331  MidEqualizerContext *s = ctx->priv;
332  return ff_framesync_activate(&s->fs);
333 }
334 
336 {
337  MidEqualizerContext *s = ctx->priv;
338 
339  ff_framesync_uninit(&s->fs);
340  av_freep(&s->histogram[0]);
341  av_freep(&s->histogram[1]);
342  av_freep(&s->cchange);
343 }
344 
346  {
347  .name = "in0",
348  .type = AVMEDIA_TYPE_VIDEO,
349  .config_props = config_input0,
350  },
351  {
352  .name = "in1",
353  .type = AVMEDIA_TYPE_VIDEO,
354  .config_props = config_input1,
355  },
356 };
357 
359  {
360  .name = "default",
361  .type = AVMEDIA_TYPE_VIDEO,
362  .config_props = config_output,
363  },
364 };
365 
367  .name = "midequalizer",
368  .description = NULL_IF_CONFIG_SMALL("Apply Midway Equalization."),
369  .priv_size = sizeof(MidEqualizerContext),
370  .uninit = uninit,
371  .activate = activate,
375  .priv_class = &midequalizer_class,
377 };
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
h0
static const float h0[64]
Definition: speexdata.h:741
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:366
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
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
FILTER_PIXFMTS_ARRAY
#define FILTER_PIXFMTS_ARRAY(array)
Definition: internal.h:171
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:274
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:345
AV_PIX_FMT_YUV420P10
#define AV_PIX_FMT_YUV420P10
Definition: pixfmt.h:391
MidEqualizerContext::histogram
float * histogram[2]
Definition: vf_midequalizer.c:36
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:329
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
planes
static const struct @320 planes[]
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
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:186
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:294
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:212
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
AVFILTER_DEFINE_CLASS
AVFILTER_DEFINE_CLASS(midequalizer)
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:191
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:358
config_input0
static int config_input0(AVFilterLink *inlink)
Definition: vf_midequalizer.c:240
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:172
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:84
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
pix_fmts
static enum AVPixelFormat pix_fmts[]
Definition: vf_midequalizer.c:60
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:130
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:335
AVFilterContext
An instance of a filter.
Definition: avfilter.h:386
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:151
FILTER_OUTPUTS
#define FILTER_OUTPUTS(array)
Definition: internal.h:192
av_freep
#define av_freep(p)
Definition: tableprint_vlc.h:35
AV_PIX_FMT_YUV411P
@ AV_PIX_FMT_YUV411P
planar YUV 4:1:1, 12bpp, (1 Cr & Cb sample per 4x1 Y samples)
Definition: pixfmt.h:73
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