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1 /*
2  * Copyright (c) 2020 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
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  */
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"
30 typedef struct MaskedThresholdContext {
31  const AVClass *class;
33  int threshold;
34  int planes;
36  int linesize[4];
37  int planewidth[4], planeheight[4];
38  int nb_planes;
39  int depth;
42  void (*maskedthreshold)(const uint8_t *src, const uint8_t *ref, uint8_t *dst, int threshold, int w);
45 #define OFFSET(x) offsetof(MaskedThresholdContext, x)
48 typedef struct ThreadData {
49  AVFrame *src, *ref, *dst;
50 } ThreadData;
53  { "threshold", "set threshold", OFFSET(threshold), AV_OPT_TYPE_INT, {.i64=1}, 0, UINT16_MAX, FLAGS },
54  { "planes", "set planes", OFFSET(planes), AV_OPT_TYPE_INT, {.i64=0xF}, 0, 0xF, FLAGS },
55  { NULL }
56 };
59 {
60  static const enum AVPixelFormat pix_fmts[] = {
80  };
82  return ff_set_common_formats(ctx, ff_make_format_list(pix_fmts));
83 }
85 static void threshold8(const uint8_t *src, const uint8_t *ref, uint8_t *dst, int threshold, int w)
86 {
87  for (int x = 0; x < w; x++)
88  dst[x] = FFABS(src[x] - ref[x]) <= threshold ? src[x] : ref[x];
89 }
91 static void threshold16(const uint8_t *ssrc, const uint8_t *rref, uint8_t *ddst, int threshold, int w)
92 {
93  const uint16_t *src = (const uint16_t *)ssrc;
94  const uint16_t *ref = (const uint16_t *)rref;
95  uint16_t *dst = (uint16_t *)ddst;
97  for (int x = 0; x < w; x++)
98  dst[x] = FFABS(src[x] - ref[x]) <= threshold ? src[x] : ref[x];
99 }
102 {
103  AVFilterContext *ctx = inlink->dst;
104  MaskedThresholdContext *s = ctx->priv;
106  int vsub, hsub, ret;
110  if ((ret = av_image_fill_linesizes(s->linesize, inlink->format, inlink->w)) < 0)
111  return ret;
113  hsub = desc->log2_chroma_w;
114  vsub = desc->log2_chroma_h;
115  s->planeheight[1] = s->planeheight[2] = AV_CEIL_RSHIFT(inlink->h, vsub);
116  s->planeheight[0] = s->planeheight[3] = inlink->h;
117  s->planewidth[1] = s->planewidth[2] = AV_CEIL_RSHIFT(inlink->w, hsub);
118  s->planewidth[0] = s->planewidth[3] = inlink->w;
120  s->depth = desc->comp[0].depth;
122  if (desc->comp[0].depth == 8)
124  else
127  return 0;
128 }
130 static int threshold_slice(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
131 {
132  MaskedThresholdContext *s = ctx->priv;
133  const int threshold = s->threshold;
134  ThreadData *td = arg;
136  for (int p = 0; p < s->nb_planes; p++) {
137  const ptrdiff_t src_linesize = td->src->linesize[p];
138  const ptrdiff_t ref_linesize = td->ref->linesize[p];
139  const ptrdiff_t dst_linesize = td->dst->linesize[p];
140  const int w = s->planewidth[p];
141  const int h = s->planeheight[p];
142  const int slice_start = (h * jobnr) / nb_jobs;
143  const int slice_end = (h * (jobnr+1)) / nb_jobs;
144  const uint8_t *src = td->src->data[p] + slice_start * src_linesize;
145  const uint8_t *ref = td->ref->data[p] + slice_start * ref_linesize;
146  uint8_t *dst = td->dst->data[p] + slice_start * dst_linesize;
148  if (!((1 << p) & s->planes)) {
149  av_image_copy_plane(dst, dst_linesize, ref, ref_linesize,
150  s->linesize[p], slice_end - slice_start);
151  continue;
152  }
154  for (int y = slice_start; y < slice_end; y++) {
155  s->maskedthreshold(src, ref, dst, threshold, w);
157  dst += dst_linesize;
158  src += src_linesize;
159  ref += ref_linesize;
160  }
161  }
163  return 0;
164 }
167 {
168  AVFilterContext *ctx = fs->parent;
170  AVFilterLink *outlink = ctx->outputs[0];
171  AVFrame *out, *src, *ref;
172  int ret;
174  if ((ret = ff_framesync_get_frame(&s->fs, 0, &src, 0)) < 0 ||
175  (ret = ff_framesync_get_frame(&s->fs, 1, &ref, 0)) < 0)
176  return ret;
178  if (ctx->is_disabled) {
179  out = av_frame_clone(src);
180  if (!out)
181  return AVERROR(ENOMEM);
182  } else {
183  ThreadData td;
185  out = ff_get_video_buffer(outlink, outlink->w, outlink->h);
186  if (!out)
187  return AVERROR(ENOMEM);
188  av_frame_copy_props(out, src);
190  td.src = src;
191  td.ref = ref;
192  td.dst = out;
194  ctx->internal->execute(ctx, threshold_slice, &td, NULL, FFMIN(s->planeheight[2],
196  }
197  out->pts = av_rescale_q(s->fs.pts, s->fs.time_base, outlink->time_base);
199  return ff_filter_frame(outlink, out);
200 }
202 static int config_output(AVFilterLink *outlink)
203 {
204  AVFilterContext *ctx = outlink->src;
205  MaskedThresholdContext *s = ctx->priv;
206  AVFilterLink *source = ctx->inputs[0];
207  AVFilterLink *ref = ctx->inputs[1];
208  FFFrameSyncIn *in;
209  int ret;
211  if (source->format != ref->format) {
212  av_log(ctx, AV_LOG_ERROR, "inputs must be of same pixel format\n");
213  return AVERROR(EINVAL);
214  }
215  if (source->w != ref->w || source->h != ref->h) {
216  av_log(ctx, AV_LOG_ERROR, "First input link %s parameters "
217  "(size %dx%d) do not match the corresponding "
218  "second input link %s parameters (%dx%d)\n",
219  ctx->input_pads[0].name, source->w, source->h,
220  ctx->input_pads[1].name, ref->w, ref->h);
221  return AVERROR(EINVAL);
222  }
224  outlink->w = source->w;
225  outlink->h = source->h;
226  outlink->sample_aspect_ratio = source->sample_aspect_ratio;
227  outlink->frame_rate = source->frame_rate;
229  if ((ret = ff_framesync_init(&s->fs, ctx, 2)) < 0)
230  return ret;
232  in = s->fs.in;
233  in[0].time_base = source->time_base;
234  in[1].time_base = ref->time_base;
235  in[0].sync = 1;
236  in[0].before = EXT_STOP;
237  in[0].after = EXT_INFINITY;
238  in[1].sync = 1;
239  in[1].before = EXT_STOP;
240  in[1].after = EXT_INFINITY;
241  s->fs.opaque = s;
244  ret = ff_framesync_configure(&s->fs);
245  outlink->time_base = s->fs.time_base;
247  return ret;
248 }
251 {
252  MaskedThresholdContext *s = ctx->priv;
253  return ff_framesync_activate(&s->fs);
254 }
257 {
258  MaskedThresholdContext *s = ctx->priv;
260  ff_framesync_uninit(&s->fs);
261 }
264  {
265  .name = "source",
266  .type = AVMEDIA_TYPE_VIDEO,
267  .config_props = config_input,
268  },
269  {
270  .name = "reference",
271  .type = AVMEDIA_TYPE_VIDEO,
272  },
273  { NULL }
274 };
277  {
278  .name = "default",
279  .type = AVMEDIA_TYPE_VIDEO,
280  .config_props = config_output,
281  },
282  { NULL }
283 };
288  .name = "maskedthreshold",
289  .description = NULL_IF_CONFIG_SMALL("Pick pixels comparing absolute difference of two streams with threshold."),
290  .priv_class = &maskedthreshold_class,
291  .priv_size = sizeof(MaskedThresholdContext),
292  .uninit = uninit,
293  .activate = activate,
295  .inputs = maskedthreshold_inputs,
296  .outputs = maskedthreshold_outputs,
298 };
#define NULL
Definition: coverity.c:32
#define AV_PIX_FMT_YUVA422P16
Definition: pixfmt.h:442
#define AV_PIX_FMT_YUVA422P9
Definition: pixfmt.h:434
const AVPixFmtDescriptor * av_pix_fmt_desc_get(enum AVPixelFormat pix_fmt)
Definition: pixdesc.c:2573
This structure describes decoded (raw) audio or video data.
Definition: frame.h:308
Definition: opt.h:248
#define AV_PIX_FMT_YUVA420P10
Definition: pixfmt.h:436
#define AV_PIX_FMT_YUV444P14
Definition: pixfmt.h:409
#define AV_PIX_FMT_GBRAP10
Definition: pixfmt.h:419
#define AV_PIX_FMT_YUVA422P10
Definition: pixfmt.h:437
const char * desc
Definition: libsvtav1.c:79
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:2613
Main libavfilter public API header.
static const AVOption maskedthreshold_options[]
planar GBR 4:4:4 24bpp
Definition: pixfmt.h:168
static int query_formats(AVFilterContext *ctx)
#define AV_PIX_FMT_GBRP10
Definition: pixfmt.h:415
#define AV_PIX_FMT_GRAY9
Definition: pixfmt.h:379
#define AV_PIX_FMT_YUV420P12
Definition: pixfmt.h:403
#define FLAGS
int ff_framesync_configure(FFFrameSync *fs)
Configure a frame sync structure.
Definition: framesync.c:124
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
static av_cold void uninit(AVFilterContext *ctx)
int is_disabled
the enabled state from the last expression evaluation
Definition: avfilter.h:386
int64_t pts
Timestamp of the current event.
Definition: framesync.h:167
uint8_t log2_chroma_w
Amount to shift the luma width right to find the chroma width.
Definition: pixdesc.h:92
enum FFFrameSyncExtMode before
Extrapolation mode for timestamps before the first frame.
Definition: framesync.h:86
AVFilterFormats * ff_make_format_list(const int *fmts)
Create a list of supported formats.
Definition: formats.c:287
#define AV_PIX_FMT_GRAY10
Definition: pixfmt.h:380
const char * name
Pad name.
Definition: internal.h:60
AVFilterContext * parent
Parent filter context.
Definition: framesync.h:152
#define AV_PIX_FMT_GRAY12
Definition: pixfmt.h:381
AVFilterLink ** inputs
array of pointers to input links
Definition: avfilter.h:347
static const AVFilterPad maskedthreshold_inputs[]
int ff_filter_frame(AVFilterLink *link, AVFrame *frame)
Send a frame of data to the next filter.
Definition: avfilter.c:1091
void(* maskedthreshold)(const uint8_t *src, const uint8_t *ref, uint8_t *dst, int threshold, int w)
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
static int process_frame(FFFrameSync *fs)
#define av_cold
Definition: attributes.h:88
int64_t pts
Presentation timestamp in time_base units (time when frame should be shown to user).
Definition: frame.h:401
static void threshold16(const uint8_t *ssrc, const uint8_t *rref, uint8_t *ddst, int threshold, int w)
FFFrameSyncIn * in
Pointer to array of inputs.
Definition: framesync.h:203
#define AV_PIX_FMT_YUVA420P9
Definition: pixfmt.h:433
#define AV_PIX_FMT_GBRP9
Definition: pixfmt.h:414
AVFrame * dst
Definition: vf_blend.c:56
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:412
enum FFFrameSyncExtMode after
Extrapolation mode for timestamps after the last frame.
Definition: framesync.h:91
these buffered frames must be flushed immediately if a new input produces new the filter must not call request_frame to get more It must just process the frame or queue it The task of requesting more frames is left to the filter s request_frame method or the application If a filter has several the filter must be ready for frames arriving randomly on any input any filter with several inputs will most likely require some kind of queuing mechanism It is perfectly acceptable to have a limited queue and to drop frames when the inputs are too unbalanced request_frame For filters that do not use the this method is called when a frame is wanted on an output For a source
Input stream structure.
Definition: framesync.h:81
#define AV_PIX_FMT_YUV422P12
Definition: pixfmt.h:404
#define AV_PIX_FMT_YUVA420P16
Definition: pixfmt.h:441
#define av_log(a,...)
A filter pad used for either input or output.
Definition: internal.h:54
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
#define src
Definition: vp8dsp.c:254
static int threshold_slice(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
AVFilterPad * input_pads
array of input pads
Definition: avfilter.h:346
planar YUV 4:2:2 24bpp, (1 Cr & Cb sample per 2x1 Y & A samples)
Definition: pixfmt.h:176
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:194
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:588
#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 ff_framesync_uninit(FFFrameSync *fs)
Free all memory currently allocated.
Definition: framesync.c:290
Frame sync structure.
Definition: framesync.h:146
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
Definition: internal.h:153
const uint8_t * src
Definition: vf_bm3d.c:56
void * priv
private data for use by the filter
Definition: avfilter.h:354
The filter supports multithreading by splitting frames into multiple parts and processing them concur...
Definition: avfilter.h:117
#define AV_PIX_FMT_YUVA444P16
Definition: pixfmt.h:443
const char * arg
Definition: jacosubdec.c:66
#define AV_PIX_FMT_GBRAP12
Definition: pixfmt.h:420
AVRational time_base
Time base for the incoming frames.
Definition: framesync.h:96
int ff_framesync_activate(FFFrameSync *fs)
Examine the frames in the filter&#39;s input and try to produce output.
Definition: framesync.c:341
#define AV_PIX_FMT_YUV444P10
Definition: pixfmt.h:402
int(* on_event)(struct FFFrameSync *fs)
Callback called when a frame event is ready.
Definition: framesync.h:172
#define AV_PIX_FMT_GBRAP16
Definition: pixfmt.h:421
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:397
#define AV_PIX_FMT_GBRP16
Definition: pixfmt.h:418
int ff_filter_get_nb_threads(AVFilterContext *ctx)
Get number of threads for current filter instance.
Definition: avfilter.c:800
#define AV_PIX_FMT_GRAY16
Definition: pixfmt.h:383
#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:440
uint8_t w
Definition: llviddspenc.c:38
AVFormatContext * ctx
Definition: movenc.c:48
AVRational time_base
Time base for the output events.
Definition: framesync.h:162
#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
AVFilter ff_vf_maskedthreshold
#define AV_PIX_FMT_YUVA444P10
Definition: pixfmt.h:438
void * opaque
Opaque pointer, not used by the API.
Definition: framesync.h:177
#define AV_PIX_FMT_YUV444P9
Definition: pixfmt.h:398
#define AV_PIX_FMT_GBRP14
Definition: pixfmt.h:417
AVFrame * av_frame_clone(const AVFrame *src)
Create a new frame that references the same data as src.
Definition: frame.c:553
static const AVFilterPad outputs[]
Definition: af_acontrast.c:203
static int config_output(AVFilterLink *outlink)
#define AV_PIX_FMT_YUV420P16
Definition: pixfmt.h:410
#define AV_PIX_FMT_YUV420P14
Definition: pixfmt.h:407
Extend the frame to infinity.
Definition: framesync.h:75
Used for passing data between threads.
Definition: dsddec.c:67
int linesize[AV_NUM_DATA_POINTERS]
For video, size in bytes of each picture line.
Definition: frame.h:339
int ff_framesync_init(FFFrameSync *fs, AVFilterContext *parent, unsigned nb_in)
Initialize a frame sync structure.
Definition: framesync.c:84
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_PIX_FMT_GRAY14
Definition: pixfmt.h:382
these buffered frames must be flushed immediately if a new input produces new the filter must not call request_frame to get more It must just process the frame or queue it The task of requesting more frames is left to the filter s request_frame method or the application If a filter has several inputs
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:399
planar YUV 4:1:0, 9bpp, (1 Cr & Cb sample per 4x4 Y samples)
Definition: pixfmt.h:72
unsigned sync
Synchronization level: frames on input at the highest sync level will generate output frame events...
Definition: framesync.h:139
Describe the class of an AVClass context structure.
Definition: log.h:67
Filter definition.
Definition: avfilter.h:145
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
static void threshold8(const uint8_t *src, const uint8_t *ref, uint8_t *dst, int threshold, int w)
const char * name
Filter name.
Definition: avfilter.h:149
#define AV_PIX_FMT_YUV440P12
Definition: pixfmt.h:405
#define AV_PIX_FMT_YUV420P9
Definition: pixfmt.h:396
Same as AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC, except that the filter will have its filter_frame() c...
Definition: avfilter.h:134
AVFilterLink ** outputs
array of pointers to output links
Definition: avfilter.h:351
static enum AVPixelFormat pix_fmts[]
Definition: libkvazaar.c:300
#define AV_PIX_FMT_YUV422P14
Definition: pixfmt.h:408
#define AV_PIX_FMT_GBRP12
Definition: pixfmt.h:416
#define flags(name, subs,...)
Definition: cbs_av1.c:560
AVFilterInternal * internal
An opaque struct for libavfilter internal use.
Definition: avfilter.h:379
#define AV_PIX_FMT_YUV422P10
Definition: pixfmt.h:400
#define AV_PIX_FMT_YUV444P12
Definition: pixfmt.h:406
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
Definition: frame.h:322
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 activate(AVFilterContext *ctx)
planar YUV 4:2:0, 12bpp, (1 Cr & Cb sample per 2x2 Y samples)
Definition: pixfmt.h:66
Y , 8bpp.
Definition: pixfmt.h:74
static int ref[MAX_W *MAX_W]
Definition: jpeg2000dwt.c:107
planar GBRA 4:4:4:4 32bpp
Definition: pixfmt.h:215
#define AV_PIX_FMT_YUVA444P9
Definition: pixfmt.h:435
planar YUV 4:4:4, 24bpp, full scale (JPEG), deprecated in favor of AV_PIX_FMT_YUV444P and setting col...
Definition: pixfmt.h:80
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:136
static int slice_end(AVCodecContext *avctx, AVFrame *pict)
Handle slice ends.
Definition: mpeg12dec.c:2039
Completely stop all streams with this one.
Definition: framesync.h:65
const uint8_t * ref
Definition: vf_bm3d.c:58
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:339
FILE * out
Definition: movenc.c:54
planar YUV 4:4:0 (1 Cr & Cb sample per 1x2 Y samples)
Definition: pixfmt.h:99
static const AVFilterPad maskedthreshold_outputs[]
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
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 ff_framesync_get_frame(FFFrameSync *fs, unsigned in, AVFrame **rframe, unsigned get)
Get the current frame in an input.
Definition: framesync.c:253
int depth
Number of bits in the component.
Definition: pixdesc.h:58
#define OFFSET(x)
Pixel format.
Definition: pixfmt.h:64
static void hsub(htype *dst, const htype *src, int bins)
Definition: vf_median.c:75
#define AV_PIX_FMT_YUV422P16
Definition: pixfmt.h:411
int av_frame_copy_props(AVFrame *dst, const AVFrame *src)
Copy only "metadata" fields from src to dst.
Definition: frame.c:671
static int config_input(AVFilterLink *inlink)
#define AV_PIX_FMT_YUVA422P12
Definition: pixfmt.h:439
#define AV_CEIL_RSHIFT(a, b)
Definition: common.h:58