FFmpeg  4.4.6
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 
245 static int config_input0(AVFilterLink *inlink)
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 
279 static int config_input1(AVFilterLink *inlink)
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  if (in0->format != in1->format) {
309  av_log(ctx, AV_LOG_ERROR, "inputs must be of same pixel format\n");
310  return AVERROR(EINVAL);
311  }
312 
313  outlink->w = in0->w;
314  outlink->h = in0->h;
316  outlink->frame_rate = in0->frame_rate;
317 
318  if ((ret = ff_framesync_init(&s->fs, ctx, 2)) < 0)
319  return ret;
320 
321  in = s->fs.in;
322  in[0].time_base = in0->time_base;
323  in[1].time_base = in1->time_base;
324  in[0].sync = 1;
325  in[0].before = EXT_STOP;
326  in[0].after = EXT_INFINITY;
327  in[1].sync = 1;
328  in[1].before = EXT_STOP;
329  in[1].after = EXT_INFINITY;
330  s->fs.opaque = s;
331  s->fs.on_event = process_frame;
332 
333  ret = ff_framesync_configure(&s->fs);
334  outlink->time_base = s->fs.time_base;
335 
336  return ret;
337 }
338 
340 {
341  MidEqualizerContext *s = ctx->priv;
342  return ff_framesync_activate(&s->fs);
343 }
344 
346 {
347  MidEqualizerContext *s = ctx->priv;
348 
349  ff_framesync_uninit(&s->fs);
350  av_freep(&s->histogram[0]);
351  av_freep(&s->histogram[1]);
352  av_freep(&s->cchange);
353 }
354 
356  {
357  .name = "in0",
358  .type = AVMEDIA_TYPE_VIDEO,
359  .config_props = config_input0,
360  },
361  {
362  .name = "in1",
363  .type = AVMEDIA_TYPE_VIDEO,
364  .config_props = config_input1,
365  },
366  { NULL }
367 };
368 
370  {
371  .name = "default",
372  .type = AVMEDIA_TYPE_VIDEO,
373  .config_props = config_output,
374  },
375  { NULL }
376 };
377 
379  .name = "midequalizer",
380  .description = NULL_IF_CONFIG_SMALL("Apply Midway Equalization."),
381  .priv_size = sizeof(MidEqualizerContext),
382  .uninit = uninit,
384  .activate = activate,
387  .priv_class = &midequalizer_class,
389 };
static const AVFilterPad inputs[]
Definition: af_acontrast.c:193
static const AVFilterPad outputs[]
Definition: af_acontrast.c:203
#define av_cold
Definition: attributes.h:88
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:1096
Main libavfilter public API header.
#define flags(name, subs,...)
Definition: cbs_av1.c:572
#define s(width, name)
Definition: cbs_vp9.c:257
#define fs(width, name, subs,...)
Definition: cbs_vp9.c:259
#define AV_CEIL_RSHIFT(a, b)
Definition: common.h:58
#define av_clip_uint8
Definition: common.h:128
#define NULL
Definition: coverity.c:32
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
int ff_framesync_configure(FFFrameSync *fs)
Configure a frame sync structure.
Definition: framesync.c:124
int ff_framesync_activate(FFFrameSync *fs)
Examine the frames in the filter's input and try to produce output.
Definition: framesync.c:341
int ff_framesync_get_frame(FFFrameSync *fs, unsigned in, AVFrame **rframe, unsigned get)
Get the current frame in an input.
Definition: framesync.c:253
void ff_framesync_uninit(FFFrameSync *fs)
Free all memory currently allocated.
Definition: framesync.c:290
int ff_framesync_init(FFFrameSync *fs, AVFilterContext *parent, unsigned nb_in)
Initialize a frame sync structure.
Definition: framesync.c:84
@ EXT_STOP
Completely stop all streams with this one.
Definition: framesync.h:65
@ EXT_INFINITY
Extend the frame to infinity.
Definition: framesync.h:75
@ AV_OPT_TYPE_INT
Definition: opt.h:225
#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:134
#define AVERROR(e)
Definition: error.h:43
AVFrame * av_frame_clone(const AVFrame *src)
Create a new frame that references the same data as src.
Definition: frame.c:540
int av_frame_copy_props(AVFrame *dst, const AVFrame *src)
Copy only "metadata" fields from src to dst.
Definition: frame.c:658
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:194
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
void * av_calloc(size_t nmemb, size_t size)
Non-inlined equivalent of av_mallocz_array().
Definition: mem.c:245
@ AVMEDIA_TYPE_VIDEO
Definition: avutil.h:201
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:373
misc image utilities
int i
Definition: input.c:407
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:309
const char * desc
Definition: libsvtav1.c:79
uint8_t w
Definition: llviddspenc.c:39
static const struct @322 planes[]
AVOptions.
int av_pix_fmt_count_planes(enum AVPixelFormat pix_fmt)
Definition: pixdesc.c:2613
const AVPixFmtDescriptor * av_pix_fmt_desc_get(enum AVPixelFormat pix_fmt)
Definition: pixdesc.c:2573
#define AV_PIX_FMT_GBRAP12
Definition: pixfmt.h:420
#define AV_PIX_FMT_YUV420P16
Definition: pixfmt.h:410
#define AV_PIX_FMT_YUV444P12
Definition: pixfmt.h:406
#define AV_PIX_FMT_YUV444P9
Definition: pixfmt.h:398
#define AV_PIX_FMT_YUV420P10
Definition: pixfmt.h:399
#define AV_PIX_FMT_GRAY9
Definition: pixfmt.h:379
#define AV_PIX_FMT_GBRAP16
Definition: pixfmt.h:421
#define AV_PIX_FMT_GBRP9
Definition: pixfmt.h:414
#define AV_PIX_FMT_YUV422P9
Definition: pixfmt.h:397
#define AV_PIX_FMT_YUVA444P10
Definition: pixfmt.h:438
#define AV_PIX_FMT_YUVA420P16
Definition: pixfmt.h:441
#define AV_PIX_FMT_YUV420P12
Definition: pixfmt.h:403
#define AV_PIX_FMT_YUVA420P10
Definition: pixfmt.h:436
#define AV_PIX_FMT_YUVA422P9
Definition: pixfmt.h:434
#define AV_PIX_FMT_YUV422P12
Definition: pixfmt.h:404
#define AV_PIX_FMT_GBRP10
Definition: pixfmt.h:415
#define AV_PIX_FMT_YUV422P10
Definition: pixfmt.h:400
#define AV_PIX_FMT_GRAY12
Definition: pixfmt.h:381
#define AV_PIX_FMT_GBRP12
Definition: pixfmt.h:416
#define AV_PIX_FMT_YUV420P9
Definition: pixfmt.h:396
#define AV_PIX_FMT_YUVA420P9
Definition: pixfmt.h:433
#define AV_PIX_FMT_YUVA422P10
Definition: pixfmt.h:437
#define AV_PIX_FMT_YUV420P14
Definition: pixfmt.h:407
AVPixelFormat
Pixel format.
Definition: pixfmt.h:64
@ AV_PIX_FMT_NONE
Definition: pixfmt.h:65
@ AV_PIX_FMT_YUV420P
planar YUV 4:2:0, 12bpp, (1 Cr & Cb sample per 2x2 Y samples)
Definition: pixfmt.h:66
@ AV_PIX_FMT_YUV440P
planar YUV 4:4:0 (1 Cr & Cb sample per 1x2 Y samples)
Definition: pixfmt.h:99
@ AV_PIX_FMT_YUV422P
planar YUV 4:2:2, 16bpp, (1 Cr & Cb sample per 2x1 Y samples)
Definition: pixfmt.h:70
@ AV_PIX_FMT_GRAY8
Y , 8bpp.
Definition: pixfmt.h:74
@ 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_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
@ AV_PIX_FMT_YUV410P
planar YUV 4:1:0, 9bpp, (1 Cr & Cb sample per 4x4 Y samples)
Definition: pixfmt.h:72
@ AV_PIX_FMT_YUV411P
planar YUV 4:1:1, 12bpp, (1 Cr & Cb sample per 4x1 Y samples)
Definition: pixfmt.h:73
@ AV_PIX_FMT_YUV444P
planar YUV 4:4:4, 24bpp, (1 Cr & Cb sample per 1x1 Y samples)
Definition: pixfmt.h:71
@ AV_PIX_FMT_YUVA444P
planar YUV 4:4:4 32bpp, (1 Cr & Cb sample per 1x1 Y & A samples)
Definition: pixfmt.h:177
@ 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:258
@ AV_PIX_FMT_GBRAP
planar GBRA 4:4:4:4 32bpp
Definition: pixfmt.h:215
@ 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_YUVA422P
planar YUV 4:2:2 24bpp, (1 Cr & Cb sample per 2x1 Y & A samples)
Definition: pixfmt.h:176
@ AV_PIX_FMT_GBRP
planar GBR 4:4:4 24bpp
Definition: pixfmt.h:168
@ 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_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
#define AV_PIX_FMT_YUVA422P12
Definition: pixfmt.h:439
#define AV_PIX_FMT_YUV422P14
Definition: pixfmt.h:408
#define AV_PIX_FMT_GRAY10
Definition: pixfmt.h:380
#define AV_PIX_FMT_GRAY14
Definition: pixfmt.h:382
#define AV_PIX_FMT_YUV422P16
Definition: pixfmt.h:411
#define AV_PIX_FMT_GRAY16
Definition: pixfmt.h:383
#define AV_PIX_FMT_GBRAP10
Definition: pixfmt.h:419
#define AV_PIX_FMT_YUVA444P16
Definition: pixfmt.h:443
#define AV_PIX_FMT_YUVA422P16
Definition: pixfmt.h:442
#define AV_PIX_FMT_GBRP16
Definition: pixfmt.h:418
#define AV_PIX_FMT_YUV444P14
Definition: pixfmt.h:409
#define AV_PIX_FMT_YUVA444P9
Definition: pixfmt.h:435
#define AV_PIX_FMT_GBRP14
Definition: pixfmt.h:417
#define AV_PIX_FMT_YUVA444P12
Definition: pixfmt.h:440
#define AV_PIX_FMT_YUV444P16
Definition: pixfmt.h:412
#define AV_PIX_FMT_YUV444P10
Definition: pixfmt.h:402
typedef void(RENAME(mix_any_func_type))
Describe the class of an AVClass context structure.
Definition: log.h:67
An instance of a filter.
Definition: avfilter.h:341
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
This structure describes decoded (raw) audio or video data.
Definition: frame.h:318
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
Definition: frame.h:332
int linesize[AV_NUM_DATA_POINTERS]
For video, size in bytes of each picture line.
Definition: frame.h:349
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
Input stream structure.
Definition: framesync.h:81
Frame sync structure.
Definition: framesync.h:146
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)
#define av_freep(p)
#define av_log(a,...)
#define src
Definition: vp8dsp.c:255
FILE * out
Definition: movenc.c:54
AVFormatContext * ctx
Definition: movenc.c:48
static void hsub(htype *dst, const htype *src, int bins)
Definition: vf_median.c:75
static void compute_histogram16(const uint16_t *src, ptrdiff_t linesize, int w, int h, float *histogram, size_t hsize)
AVFILTER_DEFINE_CLASS(midequalizer)
static const AVFilterPad midequalizer_inputs[]
static int config_input1(AVFilterLink *inlink)
static int config_input0(AVFilterLink *inlink)
static int query_formats(AVFilterContext *ctx)
static void compute_contrast_change(float *histogram1, float *histogram2, unsigned *cchange, size_t hsize)
#define FLAGS
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)
static void compute_histogram8(const uint8_t *src, ptrdiff_t linesize, int w, int h, float *histogram, size_t hsize)
static const AVOption midequalizer_options[]
static const AVFilterPad midequalizer_outputs[]
static int activate(AVFilterContext *ctx)
static av_cold void uninit(AVFilterContext *ctx)
AVFilter ff_vf_midequalizer
#define OFFSET(x)
static int config_output(AVFilterLink *outlink)
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)
static int process_frame(FFFrameSync *fs)
AVFrame * ff_get_video_buffer(AVFilterLink *link, int w, int h)
Request a picture buffer with a specific set of permissions.
Definition: video.c:104