FFmpeg  4.2.2
vf_amplify.c
Go to the documentation of this file.
1 /*
2  * Copyright (c) 2018 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/intreadwrite.h"
23 #include "libavutil/opt.h"
24 #include "libavutil/pixdesc.h"
25 
26 #include "avfilter.h"
27 #include "formats.h"
28 #include "internal.h"
29 #include "video.h"
30 
31 typedef struct AmplifyContext {
32  const AVClass *class;
34  int radius;
35  float factor;
36  float threshold;
37  float tolerance;
38  int planes;
39 
40  int llimit;
41  int hlimit;
42  int nb_inputs;
43  int nb_frames;
44 
45  int depth;
46  int nb_planes;
47  int linesize[4];
48  int height[4];
49 
52 
54 {
55  static const enum AVPixelFormat pixel_fmts[] = {
75  };
77  if (!formats)
78  return AVERROR(ENOMEM);
79  return ff_set_common_formats(ctx, formats);
80 }
81 
83 {
84  AmplifyContext *s = ctx->priv;
85 
86  s->nb_inputs = s->radius * 2 + 1;
87 
88  s->frames = av_calloc(s->nb_inputs, sizeof(*s->frames));
89  if (!s->frames)
90  return AVERROR(ENOMEM);
91 
92  return 0;
93 }
94 
95 typedef struct ThreadData {
96  AVFrame **in, *out;
97 } ThreadData;
98 
99 static int amplify_frame(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
100 {
101  AmplifyContext *s = ctx->priv;
102  ThreadData *td = arg;
103  AVFrame **in = td->in;
104  AVFrame *out = td->out;
105  const int radius = s->radius;
106  const int nb_inputs = s->nb_inputs;
107  const float threshold = s->threshold;
108  const float tolerance = s->tolerance;
109  const float factor = s->factor;
110  const int llimit = s->llimit;
111  const int hlimit = s->hlimit;
112  const int depth = s->depth;
113  int i, p, x, y;
114 
115  if (s->depth <= 8) {
116  for (p = 0; p < s->nb_planes; p++) {
117  const int slice_start = (s->height[p] * jobnr) / nb_jobs;
118  const int slice_end = (s->height[p] * (jobnr+1)) / nb_jobs;
119  uint8_t *dst = out->data[p] + slice_start * out->linesize[p];
120 
121  if (!((1 << p) & s->planes)) {
122  av_image_copy_plane(dst, out->linesize[p],
123  in[radius]->data[p] + slice_start * in[radius]->linesize[p],
124  in[radius]->linesize[p],
125  s->linesize[p], slice_end - slice_start);
126  continue;
127  }
128 
129  for (y = slice_start; y < slice_end; y++) {
130  for (x = 0; x < s->linesize[p]; x++) {
131  int src = in[radius]->data[p][y * in[radius]->linesize[p] + x];
132  float diff, avg;
133  int sum = 0;
134 
135  for (i = 0; i < nb_inputs; i++) {
136  sum += in[i]->data[p][y * in[i]->linesize[p] + x];
137  }
138 
139  avg = sum / (float)nb_inputs;
140  diff = src - avg;
141  if (fabsf(diff) < threshold && fabsf(diff) > tolerance) {
142  int amp;
143  if (diff < 0) {
144  amp = -FFMIN(FFABS(diff * factor), llimit);
145  } else {
146  amp = FFMIN(FFABS(diff * factor), hlimit);
147  }
148  dst[x] = av_clip_uint8(src + amp);
149  } else {
150  dst[x] = src;
151  }
152  }
153 
154  dst += out->linesize[p];
155  }
156  }
157  } else {
158  for (p = 0; p < s->nb_planes; p++) {
159  const int slice_start = (s->height[p] * jobnr) / nb_jobs;
160  const int slice_end = (s->height[p] * (jobnr+1)) / nb_jobs;
161  uint16_t *dst = (uint16_t *)(out->data[p] + slice_start * out->linesize[p]);
162 
163  if (!((1 << p) & s->planes)) {
164  av_image_copy_plane((uint8_t *)dst, out->linesize[p],
165  in[radius]->data[p] + slice_start * in[radius]->linesize[p],
166  in[radius]->linesize[p],
167  s->linesize[p], slice_end - slice_start);
168  continue;
169  }
170 
171  for (y = slice_start; y < slice_end; y++) {
172  for (x = 0; x < s->linesize[p] / 2; x++) {
173  int src = AV_RN16(in[radius]->data[p] + y * in[radius]->linesize[p] + x * 2);
174  float diff, avg;
175  int sum = 0;
176 
177  for (i = 0; i < nb_inputs; i++) {
178  sum += AV_RN16(in[i]->data[p] + y * in[i]->linesize[p] + x * 2);
179  }
180 
181  avg = sum / (float)nb_inputs;
182  diff = src - avg;
183 
184  if (fabsf(diff) < threshold && fabsf(diff) > tolerance) {
185  int amp;
186  if (diff < 0) {
187  amp = -FFMIN(FFABS(diff * factor), llimit);
188  } else {
189  amp = FFMIN(FFABS(diff * factor), hlimit);
190  }
191  dst[x] = av_clip_uintp2_c(src + amp, depth);
192  } else {
193  dst[x] = src;
194  }
195  }
196 
197  dst += out->linesize[p] / 2;
198  }
199  }
200  }
201 
202  return 0;
203 }
204 
205 static int config_output(AVFilterLink *outlink)
206 {
207  AVFilterContext *ctx = outlink->src;
208  AmplifyContext *s = ctx->priv;
209  AVFilterLink *inlink = ctx->inputs[0];
210  int ret;
211 
212  s->desc = av_pix_fmt_desc_get(outlink->format);
213  if (!s->desc)
214  return AVERROR_BUG;
216  s->depth = s->desc->comp[0].depth;
217 
218  if ((ret = av_image_fill_linesizes(s->linesize, inlink->format, inlink->w)) < 0)
219  return ret;
220 
221  s->height[1] = s->height[2] = AV_CEIL_RSHIFT(inlink->h, s->desc->log2_chroma_h);
222  s->height[0] = s->height[3] = inlink->h;
223 
224  return 0;
225 }
226 
228 {
229  AmplifyContext *s = ctx->priv;
230  int i;
231 
232  if (s->frames) {
233  for (i = 0; i < s->nb_frames; i++)
234  av_frame_free(&s->frames[i]);
235  }
236  av_freep(&s->frames);
237 }
238 
239 static int filter_frame(AVFilterLink *inlink, AVFrame *in)
240 {
241  AVFilterContext *ctx = inlink->dst;
242  AVFilterLink *outlink = ctx->outputs[0];
243  AmplifyContext *s = ctx->priv;
244  ThreadData td;
245  AVFrame *out;
246 
247  if (s->nb_frames < s->nb_inputs) {
248  s->frames[s->nb_frames] = in;
249  s->nb_frames++;
250  return 0;
251  } else {
252  av_frame_free(&s->frames[0]);
253  memmove(&s->frames[0], &s->frames[1], sizeof(*s->frames) * (s->nb_inputs - 1));
254  s->frames[s->nb_inputs - 1] = in;
255  }
256 
257  out = ff_get_video_buffer(outlink, outlink->w, outlink->h);
258  if (!out)
259  return AVERROR(ENOMEM);
260  out->pts = s->frames[0]->pts;
261 
262  td.out = out;
263  td.in = s->frames;
264  ctx->internal->execute(ctx, amplify_frame, &td, NULL, FFMIN(s->height[1], ff_filter_get_nb_threads(ctx)));
265 
266  return ff_filter_frame(outlink, out);
267 }
268 
269 #define OFFSET(x) offsetof(AmplifyContext, x)
270 #define FLAGS AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_FILTERING_PARAM
271 
272 static const AVOption amplify_options[] = {
273  { "radius", "set radius", OFFSET(radius), AV_OPT_TYPE_INT, {.i64=2}, 1, 63, .flags = FLAGS },
274  { "factor", "set factor", OFFSET(factor), AV_OPT_TYPE_FLOAT, {.dbl=2}, 0, UINT16_MAX, .flags = FLAGS },
275  { "threshold", "set threshold", OFFSET(threshold), AV_OPT_TYPE_FLOAT, {.dbl=10}, 0, UINT16_MAX, .flags = FLAGS },
276  { "tolerance", "set tolerance", OFFSET(tolerance), AV_OPT_TYPE_FLOAT, {.dbl=0}, 0, UINT16_MAX, .flags = FLAGS },
277  { "low", "set low limit for amplification", OFFSET(llimit), AV_OPT_TYPE_INT, {.i64=UINT16_MAX}, 0, UINT16_MAX, .flags = FLAGS },
278  { "high", "set high limit for amplification", OFFSET(hlimit), AV_OPT_TYPE_INT, {.i64=UINT16_MAX}, 0, UINT16_MAX, .flags = FLAGS },
279  { "planes", "set what planes to filter", OFFSET(planes), AV_OPT_TYPE_FLAGS, {.i64=7}, 0, 15, FLAGS },
280  { NULL },
281 };
282 
283 static const AVFilterPad inputs[] = {
284  {
285  .name = "default",
286  .type = AVMEDIA_TYPE_VIDEO,
287  .filter_frame = filter_frame,
288  },
289  { NULL }
290 };
291 
292 static const AVFilterPad outputs[] = {
293  {
294  .name = "default",
295  .type = AVMEDIA_TYPE_VIDEO,
296  .config_props = config_output,
297  },
298  { NULL }
299 };
300 
301 AVFILTER_DEFINE_CLASS(amplify);
302 
304  .name = "amplify",
305  .description = NULL_IF_CONFIG_SMALL("Amplify changes between successive video frames."),
306  .priv_size = sizeof(AmplifyContext),
307  .priv_class = &amplify_class,
309  .outputs = outputs,
310  .inputs = inputs,
311  .init = init,
312  .uninit = uninit,
314 };
#define NULL
Definition: coverity.c:32
AVFrame * out
Definition: af_adeclick.c:488
#define AV_PIX_FMT_YUV440P10
Definition: pixfmt.h:389
const AVPixFmtDescriptor * av_pix_fmt_desc_get(enum AVPixelFormat pix_fmt)
Definition: pixdesc.c:2522
This structure describes decoded (raw) audio or video data.
Definition: frame.h:295
AVOption.
Definition: opt.h:246
#define AV_PIX_FMT_YUV444P14
Definition: pixfmt.h:397
planar YUV 4:4:4, 24bpp, (1 Cr & Cb sample per 1x1 Y samples)
Definition: pixfmt.h:71
misc image utilities
int av_pix_fmt_count_planes(enum AVPixelFormat pix_fmt)
Definition: pixdesc.c:2562
Main libavfilter public API header.
planar GBR 4:4:4 24bpp
Definition: pixfmt.h:168
#define AV_PIX_FMT_GBRP10
Definition: pixfmt.h:403
#define AV_PIX_FMT_GRAY9
Definition: pixfmt.h:367
static const AVFilterPad inputs[]
Definition: vf_amplify.c:283
#define AV_PIX_FMT_YUV420P12
Definition: pixfmt.h:391
AVFrame * ff_get_video_buffer(AVFilterLink *link, int w, int h)
Request a picture buffer with a specific set of permissions.
Definition: video.c:99
#define src
Definition: vp8dsp.c:254
void * av_calloc(size_t nmemb, size_t size)
Non-inlined equivalent of av_mallocz_array().
Definition: mem.c:244
AVFilterFormats * ff_make_format_list(const int *fmts)
Create a list of supported formats.
Definition: formats.c:283
#define AV_PIX_FMT_GRAY10
Definition: pixfmt.h:368
#define OFFSET(x)
Definition: vf_amplify.c:269
#define FLAGS
Definition: vf_amplify.c:270
const char * name
Pad name.
Definition: internal.h:60
#define AV_PIX_FMT_GRAY12
Definition: pixfmt.h:369
AVFilterLink ** inputs
array of pointers to input links
Definition: avfilter.h:346
int ff_filter_frame(AVFilterLink *link, AVFrame *frame)
Send a frame of data to the next filter.
Definition: avfilter.c:1080
static av_cold int init(AVFilterContext *ctx)
Definition: vf_amplify.c:82
AVComponentDescriptor comp[4]
Parameters that describe how pixels are packed.
Definition: pixdesc.h:117
uint8_t
#define av_cold
Definition: attributes.h:82
AVOptions.
int64_t pts
Presentation timestamp in time_base units (time when frame should be shown to user).
Definition: frame.h:388
float threshold
Definition: vf_amplify.c:36
#define AV_PIX_FMT_GBRP9
Definition: pixfmt.h:402
static int query_formats(AVFilterContext *ctx)
Definition: vf_amplify.c:53
const char data[16]
Definition: mxf.c:91
planar YUV 4:4:0 full scale (JPEG), deprecated in favor of AV_PIX_FMT_YUV440P and setting color_range...
Definition: pixfmt.h:100
planar YUV 4:2:2, 16bpp, full scale (JPEG), deprecated in favor of AV_PIX_FMT_YUV422P and setting col...
Definition: pixfmt.h:79
#define AV_PIX_FMT_YUV444P16
Definition: pixfmt.h:400
#define AV_PIX_FMT_YUV422P12
Definition: pixfmt.h:392
AVFrame ** in
Definition: vf_amplify.c:96
A filter pad used for either input or output.
Definition: internal.h:54
#define i(width, name, range_min, range_max)
Definition: cbs_h2645.c:259
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:568
#define td
Definition: regdef.h:70
uint8_t log2_chroma_h
Amount to shift the luma height right to find the chroma height.
Definition: pixdesc.h:101
#define AVERROR(e)
Definition: error.h:43
void av_frame_free(AVFrame **frame)
Free the frame and any dynamically allocated objects in it, e.g.
Definition: frame.c:202
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
Definition: internal.h:186
void * priv
private data for use by the filter
Definition: avfilter.h:353
#define AVFILTER_FLAG_SLICE_THREADS
The filter supports multithreading by splitting frames into multiple parts and processing them concur...
Definition: avfilter.h:116
const char * arg
Definition: jacosubdec.c:66
static av_cold void uninit(AVFilterContext *ctx)
Definition: vf_amplify.c:227
#define AV_PIX_FMT_YUV444P10
Definition: pixfmt.h:390
planar YUV 4:2:2, 16bpp, (1 Cr & Cb sample per 2x1 Y samples)
Definition: pixfmt.h:70
#define AV_PIX_FMT_YUV422P9
Definition: pixfmt.h:385
AVFrame ** frames
Definition: vf_amplify.c:50
static const AVFilterPad outputs[]
Definition: vf_amplify.c:292
int linesize[4]
Definition: vf_amplify.c:47
#define AV_PIX_FMT_GBRP16
Definition: pixfmt.h:406
int ff_filter_get_nb_threads(AVFilterContext *ctx)
Get number of threads for current filter instance.
Definition: avfilter.c:802
#define AV_PIX_FMT_GRAY16
Definition: pixfmt.h:371
#define FFMIN(a, b)
Definition: common.h:96
planar YUV 4:2:0, 12bpp, full scale (JPEG), deprecated in favor of AV_PIX_FMT_YUV420P and setting col...
Definition: pixfmt.h:78
AVFormatContext * ctx
Definition: movenc.c:48
#define FFABS(a)
Absolute value, Note, INT_MIN / INT64_MIN result in undefined behavior as they are not representable ...
Definition: common.h:72
#define s(width, name)
Definition: cbs_vp9.c:257
#define AV_PIX_FMT_YUV444P9
Definition: pixfmt.h:386
static const AVOption amplify_options[]
Definition: vf_amplify.c:272
#define AV_PIX_FMT_GBRP14
Definition: pixfmt.h:405
#define AV_PIX_FMT_YUV420P16
Definition: pixfmt.h:398
#define AV_PIX_FMT_YUV420P14
Definition: pixfmt.h:395
Used for passing data between threads.
Definition: af_adeclick.c:487
int linesize[AV_NUM_DATA_POINTERS]
For video, size in bytes of each picture line.
Definition: frame.h:326
Descriptor that unambiguously describes how the bits of a pixel are stored in the up to 4 data planes...
Definition: pixdesc.h:81
#define AV_RN16(p)
Definition: intreadwrite.h:360
#define AV_PIX_FMT_GRAY14
Definition: pixfmt.h:370
#define AVERROR_BUG
Internal bug, also see AVERROR_BUG2.
Definition: error.h:50
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)\", len, av_get_sample_fmt_name(ac->in_fmt), av_get_sample_fmt_name(ac->out_fmt));return ff_convert_dither(ac-> in
#define AV_PIX_FMT_YUV420P10
Definition: pixfmt.h:387
planar YUV 4:1:0, 9bpp, (1 Cr & Cb sample per 4x4 Y samples)
Definition: pixfmt.h:72
AVFilter ff_vf_amplify
Definition: vf_amplify.c:303
Describe the class of an AVClass context structure.
Definition: log.h:67
Filter definition.
Definition: avfilter.h:144
int av_image_fill_linesizes(int linesizes[4], enum AVPixelFormat pix_fmt, int width)
Fill plane linesizes for an image with pixel format pix_fmt and width width.
Definition: imgutils.c:89
const char * name
Filter name.
Definition: avfilter.h:148
#define AV_PIX_FMT_YUV440P12
Definition: pixfmt.h:393
#define AV_PIX_FMT_YUV420P9
Definition: pixfmt.h:384
AVFilterLink ** outputs
array of pointers to output links
Definition: avfilter.h:350
#define AV_PIX_FMT_YUV422P14
Definition: pixfmt.h:396
#define AV_PIX_FMT_GBRP12
Definition: pixfmt.h:404
#define flags(name, subs,...)
Definition: cbs_av1.c:561
AVFilterInternal * internal
An opaque struct for libavfilter internal use.
Definition: avfilter.h:378
#define AV_PIX_FMT_YUV422P10
Definition: pixfmt.h:388
#define AV_PIX_FMT_YUV444P12
Definition: pixfmt.h:394
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
Definition: frame.h:309
static int filter_frame(AVFilterLink *inlink, AVFrame *in)
Definition: vf_amplify.c:239
#define avg(a, b, c, d)
planar YUV 4:2:0, 12bpp, (1 Cr & Cb sample per 2x2 Y samples)
Definition: pixfmt.h:66
Y , 8bpp.
Definition: pixfmt.h:74
planar YUV 4:4:4, 24bpp, full scale (JPEG), deprecated in favor of AV_PIX_FMT_YUV444P and setting col...
Definition: pixfmt.h:80
static int config_output(AVFilterLink *outlink)
Definition: vf_amplify.c:205
planar YUV 4:1:1, 12bpp, (1 Cr & Cb sample per 4x1 Y samples)
Definition: pixfmt.h:73
avfilter_execute_func * execute
Definition: internal.h:155
static int slice_end(AVCodecContext *avctx, AVFrame *pict)
Handle slice ends.
Definition: mpeg12dec.c:2029
static av_always_inline int diff(const uint32_t a, const uint32_t b)
A list of supported formats for one end of a filter link.
Definition: formats.h:64
planar YUV 4:1:1, 12bpp, (1 Cr & Cb sample per 4x1 Y samples) full scale (JPEG), deprecated in favor ...
Definition: pixfmt.h:258
An instance of a filter.
Definition: avfilter.h:338
int height[4]
Definition: vf_amplify.c:48
FILE * out
Definition: movenc.c:54
#define av_freep(p)
planar YUV 4:4:0 (1 Cr & Cb sample per 1x2 Y samples)
Definition: pixfmt.h:99
float tolerance
Definition: vf_amplify.c:37
AVFrame * in
Definition: af_afftdn.c:1082
formats
Definition: signature.h:48
AVFILTER_DEFINE_CLASS(amplify)
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:338
internal API functions
int depth
Number of bits in the component.
Definition: pixdesc.h:58
static int amplify_frame(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
Definition: vf_amplify.c:99
AVPixelFormat
Pixel format.
Definition: pixfmt.h:64
#define AV_PIX_FMT_YUV422P16
Definition: pixfmt.h:399
const AVPixFmtDescriptor * desc
Definition: vf_amplify.c:33
#define AV_CEIL_RSHIFT(a, b)
Definition: common.h:58
static av_always_inline av_const unsigned av_clip_uintp2_c(int a, int p)
Clip a signed integer to an unsigned power of two range.
Definition: common.h:229