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 "internal.h"
26 #include "video.h"
27 #include "framesync.h"
28 
29 typedef struct MidEqualizerContext {
30  const AVClass *class;
31  int width[2][4], height[2][4];
32  int nb_planes;
33  int planes;
35  float *histogram[2];
36  unsigned *cchange;
38 
39  void (*midequalizer)(const uint8_t *in0, const uint8_t *in1,
40  uint8_t *dst,
41  ptrdiff_t linesize1, ptrdiff_t linesize2,
42  ptrdiff_t dlinesize,
43  int w0, int h0,
44  int w1, int h1,
45  float *histogram1, float *histogram2,
46  unsigned *cchange, size_t hsize);
48 
49 #define OFFSET(x) offsetof(MidEqualizerContext, x)
50 #define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM
51 
52 static const AVOption midequalizer_options[] = {
53  { "planes", "set planes", OFFSET(planes), AV_OPT_TYPE_INT, {.i64=0xF}, 0, 0xF, FLAGS },
54  { NULL }
55 };
56 
57 AVFILTER_DEFINE_CLASS(midequalizer);
58 
59 static const enum AVPixelFormat pix_fmts[] = {
81 };
82 
84 {
85  AVFilterContext *ctx = fs->parent;
86  MidEqualizerContext *s = fs->opaque;
87  AVFilterLink *outlink = ctx->outputs[0];
88  AVFrame *out, *in0, *in1;
89  int ret;
90 
91  if ((ret = ff_framesync_get_frame(&s->fs, 0, &in0, 0)) < 0 ||
92  (ret = ff_framesync_get_frame(&s->fs, 1, &in1, 0)) < 0)
93  return ret;
94 
95  if (ctx->is_disabled) {
96  out = av_frame_clone(in0);
97  if (!out)
98  return AVERROR(ENOMEM);
99  } else {
100  int p;
101 
102  out = ff_get_video_buffer(outlink, outlink->w, outlink->h);
103  if (!out)
104  return AVERROR(ENOMEM);
105  av_frame_copy_props(out, in0);
106 
107  for (p = 0; p < s->nb_planes; p++) {
108  if (!((1 << p) & s->planes)) {
109  av_image_copy_plane(out->data[p], out->linesize[p], in0->data[p], in0->linesize[p],
110  s->width[0][p] * (1 + (s->histogram_size > 256)), s->height[0][p]);
111  continue;
112  }
113 
114  s->midequalizer(in0->data[p], in1->data[p],
115  out->data[p],
116  in0->linesize[p], in1->linesize[p],
117  out->linesize[p],
118  s->width[0][p], s->height[0][p],
119  s->width[1][p], s->height[1][p],
120  s->histogram[0], s->histogram[1],
121  s->cchange, s->histogram_size);
122  }
123  }
124  out->pts = av_rescale_q(s->fs.pts, s->fs.time_base, outlink->time_base);
125 
126  return ff_filter_frame(outlink, out);
127 }
128 
129 static void compute_histogram8(const uint8_t *src, ptrdiff_t linesize,
130  int w, int h, float *histogram, size_t hsize)
131 {
132  int y, x;
133 
134  memset(histogram, 0, hsize * sizeof(*histogram));
135 
136  for (y = 0; y < h; y++) {
137  for (x = 0; x < w; x++) {
138  histogram[src[x]] += 1;
139  }
140  src += linesize;
141  }
142 
143  for (x = 0; x < hsize - 1; x++) {
144  histogram[x + 1] += histogram[x];
145  histogram[x] /= hsize;
146  }
147  histogram[x] /= hsize;
148 }
149 
150 static void compute_histogram16(const uint16_t *src, ptrdiff_t linesize,
151  int w, int h, float *histogram, size_t hsize)
152 {
153  int y, x;
154 
155  memset(histogram, 0, hsize * sizeof(*histogram));
156 
157  for (y = 0; y < h; y++) {
158  for (x = 0; x < w; x++) {
159  histogram[src[x]] += 1;
160  }
161  src += linesize;
162  }
163 
164  for (x = 0; x < hsize - 1; x++) {
165  histogram[x + 1] += histogram[x];
166  histogram[x] /= hsize;
167  }
168  histogram[x] /= hsize;
169 }
170 
171 static void compute_contrast_change(float *histogram1, float *histogram2,
172  unsigned *cchange, size_t hsize)
173 {
174  int i;
175 
176  for (i = 0; i < hsize; i++) {
177  int j;
178 
179  for (j = 0; j < hsize && histogram2[j] < histogram1[i]; j++);
180 
181  cchange[i] = (i + j) / 2;
182  }
183 }
184 
185 static void midequalizer8(const uint8_t *in0, const uint8_t *in1,
186  uint8_t *dst,
187  ptrdiff_t linesize1, ptrdiff_t linesize2,
188  ptrdiff_t dlinesize,
189  int w0, int h0,
190  int w1, int h1,
191  float *histogram1, float *histogram2,
192  unsigned *cchange,
193  size_t hsize)
194 {
195  int x, y;
196 
197  compute_histogram8(in0, linesize1, w0, h0, histogram1, hsize);
198  compute_histogram8(in1, linesize2, w1, h1, histogram2, hsize);
199 
200  compute_contrast_change(histogram1, histogram2, cchange, hsize);
201 
202  for (y = 0; y < h0; y++) {
203  for (x = 0; x < w0; x++) {
204  dst[x] = av_clip_uint8(cchange[in0[x]]);
205  }
206  dst += dlinesize;
207  in0 += linesize1;
208  }
209 }
210 
211 static void midequalizer16(const uint8_t *in0, const uint8_t *in1,
212  uint8_t *dst,
213  ptrdiff_t linesize1, ptrdiff_t linesize2,
214  ptrdiff_t dlinesize,
215  int w0, int h0,
216  int w1, int h1,
217  float *histogram1, float *histogram2,
218  unsigned *cchange,
219  size_t hsize)
220 {
221  const uint16_t *i = (const uint16_t *)in0;
222  uint16_t *d = (uint16_t *)dst;
223  int x, y;
224 
225  compute_histogram16(i, linesize1 / 2, w0, h0, histogram1, hsize);
226  compute_histogram16((const uint16_t *)in1, linesize2 / 2, w1, h1, histogram2, hsize);
227 
228  compute_contrast_change(histogram1, histogram2, cchange, hsize);
229 
230  for (y = 0; y < h0; y++) {
231  for (x = 0; x < w0; x++) {
232  d[x] = cchange[i[x]];
233  }
234  d += dlinesize / 2;
235  i += linesize1 / 2;
236  }
237 }
238 
240 {
241  AVFilterContext *ctx = inlink->dst;
242  MidEqualizerContext *s = ctx->priv;
244  int vsub, hsub;
245 
246  s->nb_planes = av_pix_fmt_count_planes(inlink->format);
247 
248  hsub = desc->log2_chroma_w;
249  vsub = desc->log2_chroma_h;
250 
251  s->height[0][0] = s->height[0][3] = inlink->h;
252  s->width[0][0] = s->width[0][3] = inlink->w;
253  s->height[0][1] = s->height[0][2] = AV_CEIL_RSHIFT(inlink->h, vsub);
254  s->width[0][1] = s->width[0][2] = AV_CEIL_RSHIFT(inlink->w, hsub);
255 
256  s->histogram_size = 1 << desc->comp[0].depth;
257 
258  s->histogram[0] = av_calloc(s->histogram_size, sizeof(float));
259  s->histogram[1] = av_calloc(s->histogram_size, sizeof(float));
260  s->cchange = av_calloc(s->histogram_size, sizeof(unsigned));
261  if (!s->histogram[0] || !s->histogram[1] || !s->cchange)
262  return AVERROR(ENOMEM);
263 
264  if (s->histogram_size == 256) {
265  s->midequalizer = midequalizer8;
266  } else {
267  s->midequalizer = midequalizer16;
268  }
269 
270  return 0;
271 }
272 
274 {
275  AVFilterContext *ctx = inlink->dst;
276  MidEqualizerContext *s = ctx->priv;
278  int vsub, hsub;
279 
280  s->nb_planes = av_pix_fmt_count_planes(inlink->format);
281 
282  hsub = desc->log2_chroma_w;
283  vsub = desc->log2_chroma_h;
284 
285  s->height[1][0] = s->height[1][3] = inlink->h;
286  s->width[1][0] = s->width[1][3] = inlink->w;
287  s->height[1][1] = s->height[1][2] = AV_CEIL_RSHIFT(inlink->h, vsub);
288  s->width[1][1] = s->width[1][2] = AV_CEIL_RSHIFT(inlink->w, hsub);
289 
290  return 0;
291 }
292 
293 static int config_output(AVFilterLink *outlink)
294 {
295  AVFilterContext *ctx = outlink->src;
296  MidEqualizerContext *s = ctx->priv;
297  AVFilterLink *in0 = ctx->inputs[0];
298  AVFilterLink *in1 = ctx->inputs[1];
299  FFFrameSyncIn *in;
300  int ret;
301 
302  outlink->w = in0->w;
303  outlink->h = in0->h;
305  outlink->frame_rate = in0->frame_rate;
306 
307  if ((ret = ff_framesync_init(&s->fs, ctx, 2)) < 0)
308  return ret;
309 
310  in = s->fs.in;
311  in[0].time_base = in0->time_base;
312  in[1].time_base = in1->time_base;
313  in[0].sync = 1;
314  in[0].before = EXT_STOP;
315  in[0].after = EXT_INFINITY;
316  in[1].sync = 1;
317  in[1].before = EXT_STOP;
318  in[1].after = EXT_INFINITY;
319  s->fs.opaque = s;
320  s->fs.on_event = process_frame;
321 
322  ret = ff_framesync_configure(&s->fs);
323  outlink->time_base = s->fs.time_base;
324 
325  return ret;
326 }
327 
329 {
330  MidEqualizerContext *s = ctx->priv;
331  return ff_framesync_activate(&s->fs);
332 }
333 
335 {
336  MidEqualizerContext *s = ctx->priv;
337 
338  ff_framesync_uninit(&s->fs);
339  av_freep(&s->histogram[0]);
340  av_freep(&s->histogram[1]);
341  av_freep(&s->cchange);
342 }
343 
345  {
346  .name = "in0",
347  .type = AVMEDIA_TYPE_VIDEO,
348  .config_props = config_input0,
349  },
350  {
351  .name = "in1",
352  .type = AVMEDIA_TYPE_VIDEO,
353  .config_props = config_input1,
354  },
355 };
356 
358  {
359  .name = "default",
360  .type = AVMEDIA_TYPE_VIDEO,
361  .config_props = config_output,
362  },
363 };
364 
366  .name = "midequalizer",
367  .description = NULL_IF_CONFIG_SMALL("Apply Midway Equalization."),
368  .priv_size = sizeof(MidEqualizerContext),
369  .uninit = uninit,
370  .activate = activate,
374  .priv_class = &midequalizer_class,
376 };
MidEqualizerContext::planes
int planes
Definition: vf_midequalizer.c:33
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:112
AV_PIX_FMT_YUVA422P16
#define AV_PIX_FMT_YUVA422P16
Definition: pixfmt.h:526
AV_PIX_FMT_GBRAP16
#define AV_PIX_FMT_GBRAP16
Definition: pixfmt.h:505
FFFrameSyncIn::time_base
AVRational time_base
Time base for the incoming frames.
Definition: framesync.h:117
ff_framesync_configure
int ff_framesync_configure(FFFrameSync *fs)
Configure a frame sync structure.
Definition: framesync.c:134
h0
static const float h0[64]
Definition: speexdata.h:741
AVPixelFormat
AVPixelFormat
Pixel format.
Definition: pixfmt.h:71
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:304
out
FILE * out
Definition: movenc.c:54
ff_vf_midequalizer
const AVFilter ff_vf_midequalizer
Definition: vf_midequalizer.c:365
ff_filter_frame
int ff_filter_frame(AVFilterLink *link, AVFrame *frame)
Send a frame of data to the next filter.
Definition: avfilter.c:1007
av_pix_fmt_desc_get
const AVPixFmtDescriptor * av_pix_fmt_desc_get(enum AVPixelFormat pix_fmt)
Definition: pixdesc.c:2968
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:267
FILTER_PIXFMTS_ARRAY
#define FILTER_PIXFMTS_ARRAY(array)
Definition: internal.h:162
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:273
AV_PIX_FMT_YUVA422P9
#define AV_PIX_FMT_YUVA422P9
Definition: pixfmt.h:518
AVFrame
This structure describes decoded (raw) audio or video data.
Definition: frame.h:340
pixdesc.h
AV_PIX_FMT_YUVA420P16
#define AV_PIX_FMT_YUVA420P16
Definition: pixfmt.h:525
w
uint8_t w
Definition: llviddspenc.c:38
OFFSET
#define OFFSET(x)
Definition: vf_midequalizer.c:49
AV_PIX_FMT_YUVA420P10
#define AV_PIX_FMT_YUVA420P10
Definition: pixfmt.h:520
AVOption
AVOption.
Definition: opt.h:294
midequalizer_inputs
static const AVFilterPad midequalizer_inputs[]
Definition: vf_midequalizer.c:344
AV_PIX_FMT_YUV420P10
#define AV_PIX_FMT_YUV420P10
Definition: pixfmt.h:482
MidEqualizerContext::histogram
float * histogram[2]
Definition: vf_midequalizer.c:35
AV_PIX_FMT_YUV440P
@ AV_PIX_FMT_YUV440P
planar YUV 4:4:0 (1 Cr & Cb sample per 1x2 Y samples)
Definition: pixfmt.h:106
AVFilter::name
const char * name
Filter name.
Definition: avfilter.h:170
FFFrameSync
Frame sync structure.
Definition: framesync.h:168
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:521
activate
static int activate(AVFilterContext *ctx)
Definition: vf_midequalizer.c:328
MidEqualizerContext
Definition: vf_midequalizer.c:29
AV_PIX_FMT_GRAY9
#define AV_PIX_FMT_GRAY9
Definition: pixfmt.h:462
AVFrame::data
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
Definition: frame.h:361
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:73
av_pix_fmt_count_planes
int av_pix_fmt_count_planes(enum AVPixelFormat pix_fmt)
Definition: pixdesc.c:3008
AV_PIX_FMT_YUVA420P9
#define AV_PIX_FMT_YUVA420P9
Definition: pixfmt.h:517
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:500
AV_PIX_FMT_GBRAP
@ AV_PIX_FMT_GBRAP
planar GBRA 4:4:4:4 32bpp
Definition: pixfmt.h:212
AV_PIX_FMT_GBRP10
#define AV_PIX_FMT_GBRP10
Definition: pixfmt.h:498
AV_PIX_FMT_YUVA444P16
#define AV_PIX_FMT_YUVA444P16
Definition: pixfmt.h:527
FFFrameSyncIn
Input stream structure.
Definition: framesync.h:102
MidEqualizerContext::fs
FFFrameSync fs
Definition: vf_midequalizer.c:37
AV_PIX_FMT_YUV422P9
#define AV_PIX_FMT_YUV422P9
Definition: pixfmt.h:480
AV_PIX_FMT_GRAY16
#define AV_PIX_FMT_GRAY16
Definition: pixfmt.h:466
MidEqualizerContext::histogram_size
int histogram_size
Definition: vf_midequalizer.c:34
FFFrameSyncIn::sync
unsigned sync
Synchronization level: frames on input at the highest sync level will generate output frame events.
Definition: framesync.h:160
AVFilterPad
A filter pad used for either input or output.
Definition: internal.h:33
AV_PIX_FMT_YUV444P10
#define AV_PIX_FMT_YUV444P10
Definition: pixfmt.h:485
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:283
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:185
av_cold
#define av_cold
Definition: attributes.h:90
AV_PIX_FMT_YUV422P16
#define AV_PIX_FMT_YUV422P16
Definition: pixfmt.h:494
config_output
static int config_output(AVFilterLink *outlink)
Definition: vf_midequalizer.c:293
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:86
AV_PIX_FMT_GBRAP10
#define AV_PIX_FMT_GBRAP10
Definition: pixfmt.h:502
s
#define s(width, name)
Definition: cbs_vp9.c:198
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:211
AV_PIX_FMT_GBRAP12
#define AV_PIX_FMT_GBRAP12
Definition: pixfmt.h:503
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:108
AV_PIX_FMT_YUV444P16
#define AV_PIX_FMT_YUV444P16
Definition: pixfmt.h:495
AV_CEIL_RSHIFT
#define AV_CEIL_RSHIFT(a, b)
Definition: common.h:58
AVFILTER_DEFINE_CLASS
AVFILTER_DEFINE_CLASS(midequalizer)
AV_PIX_FMT_YUVA444P12
#define AV_PIX_FMT_YUVA444P12
Definition: pixfmt.h:524
AV_PIX_FMT_YUV420P9
#define AV_PIX_FMT_YUV420P9
Definition: pixfmt.h:479
AV_PIX_FMT_YUV420P16
#define AV_PIX_FMT_YUV420P16
Definition: pixfmt.h:493
ctx
AVFormatContext * ctx
Definition: movenc.c:48
FLAGS
#define FLAGS
Definition: vf_midequalizer.c:50
AV_PIX_FMT_GRAY14
#define AV_PIX_FMT_GRAY14
Definition: pixfmt.h:465
av_frame_clone
AVFrame * av_frame_clone(const AVFrame *src)
Create a new frame that references the same data as src.
Definition: frame.c:609
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:142
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:73
FILTER_INPUTS
#define FILTER_INPUTS(array)
Definition: internal.h:182
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:87
AV_PIX_FMT_GRAY10
#define AV_PIX_FMT_GRAY10
Definition: pixfmt.h:463
AV_PIX_FMT_GBRP16
#define AV_PIX_FMT_GBRP16
Definition: pixfmt.h:501
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:736
fs
#define fs(width, name, subs,...)
Definition: cbs_vp9.c:200
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:85
midequalizer_outputs
static const AVFilterPad midequalizer_outputs[]
Definition: vf_midequalizer.c:357
config_input0
static int config_input0(AVFilterLink *inlink)
Definition: vf_midequalizer.c:239
AV_PIX_FMT_YUV422P10
#define AV_PIX_FMT_YUV422P10
Definition: pixfmt.h:483
AV_PIX_FMT_GRAY8
@ AV_PIX_FMT_GRAY8
Y , 8bpp.
Definition: pixfmt.h:81
AV_PIX_FMT_GBRP9
#define AV_PIX_FMT_GBRP9
Definition: pixfmt.h:497
MidEqualizerContext::height
int height[2][4]
Definition: vf_midequalizer.c:31
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:39
planes
static const struct @378 planes[]
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:106
AV_PIX_FMT_YUV422P12
#define AV_PIX_FMT_YUV422P12
Definition: pixfmt.h:487
AV_PIX_FMT_YUV444P12
#define AV_PIX_FMT_YUV444P12
Definition: pixfmt.h:489
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:174
AV_PIX_FMT_YUVA444P10
#define AV_PIX_FMT_YUVA444P10
Definition: pixfmt.h:522
internal.h
compute_contrast_change
static void compute_contrast_change(float *histogram1, float *histogram2, unsigned *cchange, size_t hsize)
Definition: vf_midequalizer.c:171
i
#define i(width, name, range_min, range_max)
Definition: cbs_h2645.c:255
AV_PIX_FMT_GBRP12
#define AV_PIX_FMT_GBRP12
Definition: pixfmt.h:499
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:107
AVFilterPad::name
const char * name
Pad name.
Definition: internal.h:39
MidEqualizerContext::width
int width[2][4]
Definition: vf_midequalizer.c:31
av_calloc
void * av_calloc(size_t nmemb, size_t size)
Definition: mem.c:262
AV_PIX_FMT_YUV444P9
#define AV_PIX_FMT_YUV444P9
Definition: pixfmt.h:481
AVFilter
Filter definition.
Definition: avfilter.h:166
ret
ret
Definition: filter_design.txt:187
AV_PIX_FMT_YUVA444P9
#define AV_PIX_FMT_YUVA444P9
Definition: pixfmt.h:519
ff_framesync_init
int ff_framesync_init(FFFrameSync *fs, AVFilterContext *parent, unsigned nb_in)
Initialize a frame sync structure.
Definition: framesync.c:86
process_frame
static int process_frame(FFFrameSync *fs)
Definition: vf_midequalizer.c:83
AV_PIX_FMT_YUV420P12
#define AV_PIX_FMT_YUV420P12
Definition: pixfmt.h:486
AV_PIX_FMT_YUV422P14
#define AV_PIX_FMT_YUV422P14
Definition: pixfmt.h:491
pix_fmts
static enum AVPixelFormat pix_fmts[]
Definition: vf_midequalizer.c:59
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:129
FFFrameSyncIn::before
enum FFFrameSyncExtMode before
Extrapolation mode for timestamps before the first frame.
Definition: framesync.h:107
framesync.h
AV_PIX_FMT_NONE
@ AV_PIX_FMT_NONE
Definition: pixfmt.h:72
AV_PIX_FMT_YUVA422P12
#define AV_PIX_FMT_YUVA422P12
Definition: pixfmt.h:523
AV_OPT_TYPE_INT
@ AV_OPT_TYPE_INT
Definition: opt.h:225
avfilter.h
MidEqualizerContext::cchange
unsigned * cchange
Definition: vf_midequalizer.c:36
av_clip_uint8
#define av_clip_uint8
Definition: common.h:104
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:78
uninit
static av_cold void uninit(AVFilterContext *ctx)
Definition: vf_midequalizer.c:334
AVFilterContext
An instance of a filter.
Definition: avfilter.h:409
AV_PIX_FMT_GBRP
@ AV_PIX_FMT_GBRP
planar GBR 4:4:4 24bpp
Definition: pixfmt.h:165
desc
const char * desc
Definition: libsvtav1.c:83
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:77
midequalizer_options
static const AVOption midequalizer_options[]
Definition: vf_midequalizer.c:52
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:150
FILTER_OUTPUTS
#define FILTER_OUTPUTS(array)
Definition: internal.h:183
av_freep
#define av_freep(p)
Definition: tableprint_vlc.h:34
src
INIT_CLIP pixel * src
Definition: h264pred_template.c:418
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:80
d
d
Definition: ffmpeg_filter.c:424
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:155
imgutils.h
AVFrame::linesize
int linesize[AV_NUM_DATA_POINTERS]
For video, a positive or negative value, which is typically indicating the size in bytes of each pict...
Definition: frame.h:385
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:79
FFFrameSyncIn::after
enum FFFrameSyncExtMode after
Extrapolation mode for timestamps after the last frame.
Definition: framesync.h:112
h
h
Definition: vp9dsp_template.c:2038
AV_PIX_FMT_YUV444P14
#define AV_PIX_FMT_YUV444P14
Definition: pixfmt.h:492
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:355
AV_PIX_FMT_GRAY12
#define AV_PIX_FMT_GRAY12
Definition: pixfmt.h:464
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:173
AV_PIX_FMT_YUV420P14
#define AV_PIX_FMT_YUV420P14
Definition: pixfmt.h:490
MidEqualizerContext::nb_planes
int nb_planes
Definition: vf_midequalizer.c:32