FFmpeg
vf_amplify.c
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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[] = {
80  };
82  if (!formats)
83  return AVERROR(ENOMEM);
84  return ff_set_common_formats(ctx, formats);
85 }
86 
88 {
89  AmplifyContext *s = ctx->priv;
90 
91  s->nb_inputs = s->radius * 2 + 1;
92 
93  s->frames = av_calloc(s->nb_inputs, sizeof(*s->frames));
94  if (!s->frames)
95  return AVERROR(ENOMEM);
96 
97  return 0;
98 }
99 
100 typedef struct ThreadData {
102 } ThreadData;
103 
104 static int amplify_frame(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
105 {
106  AmplifyContext *s = ctx->priv;
107  ThreadData *td = arg;
108  AVFrame **in = td->in;
109  AVFrame *out = td->out;
110  const int radius = s->radius;
111  const int nb_inputs = s->nb_inputs;
112  const float threshold = s->threshold;
113  const float tolerance = s->tolerance;
114  const float factor = s->factor;
115  const int llimit = s->llimit;
116  const int hlimit = s->hlimit;
117  const int depth = s->depth;
118  int i, p, x, y;
119 
120  if (s->depth <= 8) {
121  for (p = 0; p < s->nb_planes; p++) {
122  const int slice_start = (s->height[p] * jobnr) / nb_jobs;
123  const int slice_end = (s->height[p] * (jobnr+1)) / nb_jobs;
124  uint8_t *dst = out->data[p] + slice_start * out->linesize[p];
125 
126  if (!((1 << p) & s->planes)) {
127  av_image_copy_plane(dst, out->linesize[p],
128  in[radius]->data[p] + slice_start * in[radius]->linesize[p],
129  in[radius]->linesize[p],
130  s->linesize[p], slice_end - slice_start);
131  continue;
132  }
133 
134  for (y = slice_start; y < slice_end; y++) {
135  for (x = 0; x < s->linesize[p]; x++) {
136  int src = in[radius]->data[p][y * in[radius]->linesize[p] + x];
137  float diff, avg;
138  int sum = 0;
139 
140  for (i = 0; i < nb_inputs; i++) {
141  sum += in[i]->data[p][y * in[i]->linesize[p] + x];
142  }
143 
144  avg = sum / (float)nb_inputs;
145  diff = src - avg;
146  if (fabsf(diff) < threshold && fabsf(diff) > tolerance) {
147  int amp;
148  if (diff < 0) {
149  amp = -FFMIN(FFABS(diff * factor), llimit);
150  } else {
151  amp = FFMIN(FFABS(diff * factor), hlimit);
152  }
153  dst[x] = av_clip_uint8(src + amp);
154  } else {
155  dst[x] = src;
156  }
157  }
158 
159  dst += out->linesize[p];
160  }
161  }
162  } else {
163  for (p = 0; p < s->nb_planes; p++) {
164  const int slice_start = (s->height[p] * jobnr) / nb_jobs;
165  const int slice_end = (s->height[p] * (jobnr+1)) / nb_jobs;
166  uint16_t *dst = (uint16_t *)(out->data[p] + slice_start * out->linesize[p]);
167 
168  if (!((1 << p) & s->planes)) {
169  av_image_copy_plane((uint8_t *)dst, out->linesize[p],
170  in[radius]->data[p] + slice_start * in[radius]->linesize[p],
171  in[radius]->linesize[p],
172  s->linesize[p], slice_end - slice_start);
173  continue;
174  }
175 
176  for (y = slice_start; y < slice_end; y++) {
177  for (x = 0; x < s->linesize[p] / 2; x++) {
178  int src = AV_RN16(in[radius]->data[p] + y * in[radius]->linesize[p] + x * 2);
179  float diff, avg;
180  int sum = 0;
181 
182  for (i = 0; i < nb_inputs; i++) {
183  sum += AV_RN16(in[i]->data[p] + y * in[i]->linesize[p] + x * 2);
184  }
185 
186  avg = sum / (float)nb_inputs;
187  diff = src - avg;
188 
189  if (fabsf(diff) < threshold && fabsf(diff) > tolerance) {
190  int amp;
191  if (diff < 0) {
192  amp = -FFMIN(FFABS(diff * factor), llimit);
193  } else {
194  amp = FFMIN(FFABS(diff * factor), hlimit);
195  }
196  dst[x] = av_clip_uintp2_c(src + amp, depth);
197  } else {
198  dst[x] = src;
199  }
200  }
201 
202  dst += out->linesize[p] / 2;
203  }
204  }
205  }
206 
207  return 0;
208 }
209 
210 static int config_output(AVFilterLink *outlink)
211 {
212  AVFilterContext *ctx = outlink->src;
213  AmplifyContext *s = ctx->priv;
214  AVFilterLink *inlink = ctx->inputs[0];
215  int ret;
216 
217  s->desc = av_pix_fmt_desc_get(outlink->format);
218  if (!s->desc)
219  return AVERROR_BUG;
221  s->depth = s->desc->comp[0].depth;
222 
223  if ((ret = av_image_fill_linesizes(s->linesize, inlink->format, inlink->w)) < 0)
224  return ret;
225 
226  s->height[1] = s->height[2] = AV_CEIL_RSHIFT(inlink->h, s->desc->log2_chroma_h);
227  s->height[0] = s->height[3] = inlink->h;
228 
229  return 0;
230 }
231 
233 {
234  AmplifyContext *s = ctx->priv;
235  int i;
236 
237  if (s->frames) {
238  for (i = 0; i < s->nb_frames; i++)
239  av_frame_free(&s->frames[i]);
240  }
241  av_freep(&s->frames);
242 }
243 
245 {
246  AVFilterContext *ctx = inlink->dst;
247  AVFilterLink *outlink = ctx->outputs[0];
248  AmplifyContext *s = ctx->priv;
249  ThreadData td;
250  AVFrame *out;
251 
252  if (s->nb_frames < s->nb_inputs) {
253  s->frames[s->nb_frames] = in;
254  s->nb_frames++;
255  return 0;
256  } else {
257  av_frame_free(&s->frames[0]);
258  memmove(&s->frames[0], &s->frames[1], sizeof(*s->frames) * (s->nb_inputs - 1));
259  s->frames[s->nb_inputs - 1] = in;
260  }
261 
262  if (!ctx->is_disabled) {
263  out = ff_get_video_buffer(outlink, outlink->w, outlink->h);
264  if (!out)
265  return AVERROR(ENOMEM);
266  av_frame_copy_props(out, s->frames[0]);
267 
268  td.out = out;
269  td.in = s->frames;
270  ctx->internal->execute(ctx, amplify_frame, &td, NULL, FFMIN(s->height[1], ff_filter_get_nb_threads(ctx)));
271  } else {
272  out = av_frame_clone(s->frames[s->radius]);
273  if (!out)
274  return AVERROR(ENOMEM);
275  out->pts = s->frames[0]->pts;
276  }
277 
278  return ff_filter_frame(outlink, out);
279 }
280 
281 #define OFFSET(x) offsetof(AmplifyContext, x)
282 #define FLAGS AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_FILTERING_PARAM
283 #define VFT AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_FILTERING_PARAM | AV_OPT_FLAG_RUNTIME_PARAM
284 
285 static const AVOption amplify_options[] = {
286  { "radius", "set radius", OFFSET(radius), AV_OPT_TYPE_INT, {.i64=2}, 1, 63, .flags = FLAGS },
287  { "factor", "set factor", OFFSET(factor), AV_OPT_TYPE_FLOAT, {.dbl=2}, 0, UINT16_MAX, .flags = VFT },
288  { "threshold", "set threshold", OFFSET(threshold), AV_OPT_TYPE_FLOAT, {.dbl=10}, 0, UINT16_MAX, .flags = VFT },
289  { "tolerance", "set tolerance", OFFSET(tolerance), AV_OPT_TYPE_FLOAT, {.dbl=0}, 0, UINT16_MAX, .flags = VFT },
290  { "low", "set low limit for amplification", OFFSET(llimit), AV_OPT_TYPE_INT, {.i64=UINT16_MAX}, 0, UINT16_MAX, .flags = VFT },
291  { "high", "set high limit for amplification", OFFSET(hlimit), AV_OPT_TYPE_INT, {.i64=UINT16_MAX}, 0, UINT16_MAX, .flags = VFT },
292  { "planes", "set what planes to filter", OFFSET(planes), AV_OPT_TYPE_FLAGS, {.i64=7}, 0, 15, VFT },
293  { NULL },
294 };
295 
296 static const AVFilterPad inputs[] = {
297  {
298  .name = "default",
299  .type = AVMEDIA_TYPE_VIDEO,
300  .filter_frame = filter_frame,
301  },
302  { NULL }
303 };
304 
305 static const AVFilterPad outputs[] = {
306  {
307  .name = "default",
308  .type = AVMEDIA_TYPE_VIDEO,
309  .config_props = config_output,
310  },
311  { NULL }
312 };
313 
314 AVFILTER_DEFINE_CLASS(amplify);
315 
317  .name = "amplify",
318  .description = NULL_IF_CONFIG_SMALL("Amplify changes between successive video frames."),
319  .priv_size = sizeof(AmplifyContext),
320  .priv_class = &amplify_class,
322  .outputs = outputs,
323  .inputs = inputs,
324  .init = init,
325  .uninit = uninit,
328 };
#define NULL
Definition: coverity.c:32
#define AV_PIX_FMT_YUVA422P16
Definition: pixfmt.h:430
AVFrame * out
Definition: af_adeclick.c:494
#define AV_PIX_FMT_YUV440P10
Definition: pixfmt.h:389
#define AV_PIX_FMT_YUVA422P9
Definition: pixfmt.h:422
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
ptrdiff_t const GLvoid * data
Definition: opengl_enc.c:100
#define AV_PIX_FMT_YUVA420P10
Definition: pixfmt.h:424
#define AV_PIX_FMT_YUV444P14
Definition: pixfmt.h:397
#define AV_PIX_FMT_GBRAP10
Definition: pixfmt.h:407
#define AV_PIX_FMT_YUVA422P10
Definition: pixfmt.h:425
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:296
#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
int is_disabled
the enabled state from the last expression evaluation
Definition: avfilter.h:385
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:281
#define FLAGS
Definition: vf_amplify.c:282
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:1075
static av_cold int init(AVFilterContext *ctx)
Definition: vf_amplify.c:87
planar YUV 4:2:0, 20bpp, (1 Cr & Cb sample per 2x2 Y & A samples)
Definition: pixfmt.h:101
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_YUVA420P9
Definition: pixfmt.h:421
#define AV_PIX_FMT_GBRP9
Definition: pixfmt.h:402
static int query_formats(AVFilterContext *ctx)
Definition: vf_amplify.c:53
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
#define AV_PIX_FMT_YUVA420P16
Definition: pixfmt.h:429
AVFrame ** in
Definition: vf_amplify.c:101
A filter pad used for either input or output.
Definition: internal.h:54
planar YUV 4:2:2 24bpp, (1 Cr & Cb sample per 2x1 Y & A samples)
Definition: pixfmt.h:176
#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:569
#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
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
int ff_filter_process_command(AVFilterContext *ctx, const char *cmd, const char *arg, char *res, int res_len, int flags)
Generic processing of user supplied commands that are set in the same way as the filter options...
Definition: avfilter.c:869
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
#define AV_PIX_FMT_YUVA444P16
Definition: pixfmt.h:431
const char * arg
Definition: jacosubdec.c:66
#define AV_PIX_FMT_GBRAP12
Definition: pixfmt.h:408
static av_cold void uninit(AVFilterContext *ctx)
Definition: vf_amplify.c:232
#define AV_PIX_FMT_YUV444P10
Definition: pixfmt.h:390
#define AV_PIX_FMT_GBRAP16
Definition: pixfmt.h:409
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:305
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:784
#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
#define AV_PIX_FMT_YUVA444P12
Definition: pixfmt.h:428
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_YUVA444P10
Definition: pixfmt.h:426
#define AV_PIX_FMT_YUV444P9
Definition: pixfmt.h:386
static const AVOption amplify_options[]
Definition: vf_amplify.c:285
#define AV_PIX_FMT_GBRP14
Definition: pixfmt.h:405
AVFrame * av_frame_clone(const AVFrame *src)
Create a new frame that references the same data as src.
Definition: frame.c:540
#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: dsddec.c:64
int linesize[AV_NUM_DATA_POINTERS]
For video, size in bytes of each picture line.
Definition: frame.h:326
planar YUV 4:4:4 32bpp, (1 Cr & Cb sample per 1x1 Y & A samples)
Definition: pixfmt.h:177
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)\n", 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:316
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
#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:133
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:564
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
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
static int filter_frame(AVFilterLink *inlink, AVFrame *in)
Definition: vf_amplify.c:244
#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 GBRA 4:4:4:4 32bpp
Definition: pixfmt.h:215
#define AV_PIX_FMT_YUVA444P9
Definition: pixfmt.h:423
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:210
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:144
static int slice_end(AVCodecContext *avctx, AVFrame *pict)
Handle slice ends.
Definition: mpeg12dec.c:2035
#define VFT
Definition: vf_amplify.c:283
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
static int process_command(AVFilterContext *ctx, const char *cmd, const char *args, char *res, int res_len, int flags)
Definition: af_afftdn.c:1374
#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:1083
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
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
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:104
AVPixelFormat
Pixel format.
Definition: pixfmt.h:64
#define AV_PIX_FMT_YUV422P16
Definition: pixfmt.h:399
int av_frame_copy_props(AVFrame *dst, const AVFrame *src)
Copy only "metadata" fields from src to dst.
Definition: frame.c:654
#define AV_PIX_FMT_YUVA422P12
Definition: pixfmt.h:427
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