FFmpeg
vf_freezedetect.c
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1 /*
2  * This file is part of FFmpeg.
3  *
4  * FFmpeg is free software; you can redistribute it and/or
5  * modify it under the terms of the GNU Lesser General Public
6  * License as published by the Free Software Foundation; either
7  * version 2.1 of the License, or (at your option) any later version.
8  *
9  * FFmpeg is distributed in the hope that it will be useful,
10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12  * Lesser General Public License for more details.
13  *
14  * You should have received a copy of the GNU Lesser General Public
15  * License along with FFmpeg; if not, write to the Free Software
16  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
17  */
18 
19 /**
20  * @file
21  * video freeze detection filter
22  */
23 
24 #include "libavutil/avassert.h"
25 #include "libavutil/imgutils.h"
26 #include "libavutil/opt.h"
27 #include "libavutil/pixdesc.h"
28 #include "libavutil/timestamp.h"
29 
30 #include "avfilter.h"
31 #include "filters.h"
32 #include "scene_sad.h"
33 
34 typedef struct FreezeDetectContext {
35  const AVClass *class;
36 
37  ptrdiff_t width[4];
38  ptrdiff_t height[4];
40  int bitdepth;
42  int64_t n;
43  int64_t reference_n;
44  int frozen;
45 
46  double noise;
47  int64_t duration; ///< minimum duration of frozen frame until notification
49 
50 #define OFFSET(x) offsetof(FreezeDetectContext, x)
51 #define V AV_OPT_FLAG_VIDEO_PARAM
52 #define F AV_OPT_FLAG_FILTERING_PARAM
53 
54 static const AVOption freezedetect_options[] = {
55  { "n", "set noise tolerance", OFFSET(noise), AV_OPT_TYPE_DOUBLE, {.dbl=0.001}, 0, 1.0, V|F },
56  { "noise", "set noise tolerance", OFFSET(noise), AV_OPT_TYPE_DOUBLE, {.dbl=0.001}, 0, 1.0, V|F },
57  { "d", "set minimum duration in seconds", OFFSET(duration), AV_OPT_TYPE_DURATION, {.i64=2000000}, 0, INT64_MAX, V|F },
58  { "duration", "set minimum duration in seconds", OFFSET(duration), AV_OPT_TYPE_DURATION, {.i64=2000000}, 0, INT64_MAX, V|F },
59 
60  {NULL}
61 };
62 
63 AVFILTER_DEFINE_CLASS(freezedetect);
64 
66 {
67  static const enum AVPixelFormat pix_fmts[] = {
92  };
93 
95  if (!fmts_list)
96  return AVERROR(ENOMEM);
97  return ff_set_common_formats(ctx, fmts_list);
98 }
99 
101 {
102  AVFilterContext *ctx = inlink->dst;
103  FreezeDetectContext *s = ctx->priv;
104  const AVPixFmtDescriptor *pix_desc = av_pix_fmt_desc_get(inlink->format);
105 
106  s->bitdepth = pix_desc->comp[0].depth;
107 
108  for (int plane = 0; plane < 4; plane++) {
109  ptrdiff_t line_size = av_image_get_linesize(inlink->format, inlink->w, plane);
110  s->width[plane] = line_size >> (s->bitdepth > 8);
111  s->height[plane] = inlink->h >> ((plane == 1 || plane == 2) ? pix_desc->log2_chroma_h : 0);
112  }
113 
114  s->sad = ff_scene_sad_get_fn(s->bitdepth == 8 ? 8 : 16);
115  if (!s->sad)
116  return AVERROR(EINVAL);
117 
118  return 0;
119 }
120 
122 {
123  FreezeDetectContext *s = ctx->priv;
124  av_frame_free(&s->reference_frame);
125 }
126 
128 {
129  uint64_t sad = 0;
130  uint64_t count = 0;
131  double mafd;
132  for (int plane = 0; plane < 4; plane++) {
133  if (s->width[plane]) {
134  uint64_t plane_sad;
135  s->sad(frame->data[plane], frame->linesize[plane],
136  reference->data[plane], reference->linesize[plane],
137  s->width[plane], s->height[plane], &plane_sad);
138  sad += plane_sad;
139  count += s->width[plane] * s->height[plane];
140  }
141  }
142  emms_c();
143  mafd = (double)sad / count / (1ULL << s->bitdepth);
144  return (mafd <= s->noise);
145 }
146 
147 static int set_meta(FreezeDetectContext *s, AVFrame *frame, const char *key, const char *value)
148 {
149  av_log(s, AV_LOG_INFO, "%s: %s\n", key, value);
150  return av_dict_set(&frame->metadata, key, value, 0);
151 }
152 
154 {
155  int ret;
156  AVFilterLink *inlink = ctx->inputs[0];
157  AVFilterLink *outlink = ctx->outputs[0];
158  FreezeDetectContext *s = ctx->priv;
159  AVFrame *frame;
160 
162 
164  if (ret < 0)
165  return ret;
166 
167  if (frame) {
168  int frozen = 0;
169  s->n++;
170 
171  if (s->reference_frame) {
172  int64_t duration;
173  if (s->reference_frame->pts == AV_NOPTS_VALUE || frame->pts == AV_NOPTS_VALUE || frame->pts < s->reference_frame->pts) // Discontinuity?
174  duration = inlink->frame_rate.num > 0 ? av_rescale_q(s->n - s->reference_n, av_inv_q(inlink->frame_rate), AV_TIME_BASE_Q) : 0;
175  else
176  duration = av_rescale_q(frame->pts - s->reference_frame->pts, inlink->time_base, AV_TIME_BASE_Q);
177 
178  frozen = is_frozen(s, s->reference_frame, frame);
179  if (duration >= s->duration) {
180  if (!s->frozen)
181  set_meta(s, frame, "lavfi.freezedetect.freeze_start", av_ts2timestr(s->reference_frame->pts, &inlink->time_base));
182  if (!frozen) {
183  set_meta(s, frame, "lavfi.freezedetect.freeze_duration", av_ts2timestr(duration, &AV_TIME_BASE_Q));
184  set_meta(s, frame, "lavfi.freezedetect.freeze_end", av_ts2timestr(frame->pts, &inlink->time_base));
185  }
186  s->frozen = frozen;
187  }
188  }
189 
190  if (!frozen) {
191  av_frame_free(&s->reference_frame);
192  s->reference_frame = av_frame_clone(frame);
193  s->reference_n = s->n;
194  if (!s->reference_frame) {
196  return AVERROR(ENOMEM);
197  }
198  }
199  return ff_filter_frame(outlink, frame);
200  }
201 
204 
205  return FFERROR_NOT_READY;
206 }
207 
209  {
210  .name = "default",
211  .type = AVMEDIA_TYPE_VIDEO,
212  .config_props = config_input,
213  },
214  { NULL }
215 };
216 
218  {
219  .name = "default",
220  .type = AVMEDIA_TYPE_VIDEO,
221  },
222  { NULL }
223 };
224 
226  .name = "freezedetect",
227  .description = NULL_IF_CONFIG_SMALL("Detects frozen video input."),
228  .priv_size = sizeof(FreezeDetectContext),
229  .priv_class = &freezedetect_class,
230  .uninit = uninit,
234  .activate = activate,
235 };
AV_PIX_FMT_YUVA422P16
#define AV_PIX_FMT_YUVA422P16
Definition: pixfmt.h:442
AV_PIX_FMT_GBRAP16
#define AV_PIX_FMT_GBRAP16
Definition: pixfmt.h:421
AVPixelFormat
AVPixelFormat
Pixel format.
Definition: pixfmt.h:64
AVERROR
Filter the word “frame” indicates either a video frame or a group of audio as stored in an AVFrame structure Format for each input and each output the list of supported formats For video that means pixel format For audio that means channel sample they are references to shared objects When the negotiation mechanism computes the intersection of the formats supported at each end of a all references to both lists are replaced with a reference to the intersection And when a single format is eventually chosen for a link amongst the remaining all references to the list are updated That means that if a filter requires that its input and output have the same format amongst a supported all it has to do is use a reference to the same list of formats query_formats can leave some formats unset and return AVERROR(EAGAIN) to cause the negotiation mechanism toagain later. That can be used by filters with complex requirements to use the format negotiated on one link to set the formats supported on another. Frame references ownership and permissions
opt.h
AV_PIX_FMT_YA8
@ AV_PIX_FMT_YA8
8 bits gray, 8 bits alpha
Definition: pixfmt.h:143
activate
static int activate(AVFilterContext *ctx)
Definition: vf_freezedetect.c:153
ff_make_format_list
AVFilterFormats * ff_make_format_list(const int *fmts)
Create a list of supported formats.
Definition: formats.c:286
FreezeDetectContext::noise
double noise
Definition: vf_freezedetect.c:46
ff_filter_frame
int ff_filter_frame(AVFilterLink *link, AVFrame *frame)
Send a frame of data to the next filter.
Definition: avfilter.c:1094
av_pix_fmt_desc_get
const AVPixFmtDescriptor * av_pix_fmt_desc_get(enum AVPixelFormat pix_fmt)
Definition: pixdesc.c:2573
FFERROR_NOT_READY
return FFERROR_NOT_READY
Definition: filter_design.txt:204
AV_TIME_BASE_Q
#define AV_TIME_BASE_Q
Internal time base represented as fractional value.
Definition: avutil.h:260
inlink
The exact code depends on how similar the blocks are and how related they are to the and needs to apply these operations to the correct inlink or outlink if there are several Macros are available to factor that when no extra processing is inlink
Definition: filter_design.txt:212
av_frame_free
void av_frame_free(AVFrame **frame)
Free the frame and any dynamically allocated objects in it, e.g.
Definition: frame.c:204
AV_PIX_FMT_YUVA422P9
#define AV_PIX_FMT_YUVA422P9
Definition: pixfmt.h:434
AVFrame
This structure describes decoded (raw) audio or video data.
Definition: frame.h:324
pixdesc.h
AV_PIX_FMT_YUVA420P16
#define AV_PIX_FMT_YUVA420P16
Definition: pixfmt.h:441
AVComponentDescriptor::depth
int depth
Number of bits in the component.
Definition: pixdesc.h:58
AV_PIX_FMT_YUVA420P10
#define AV_PIX_FMT_YUVA420P10
Definition: pixfmt.h:436
FreezeDetectContext::n
int64_t n
Definition: vf_freezedetect.c:42
AVOption
AVOption.
Definition: opt.h:248
AV_OPT_TYPE_DURATION
@ AV_OPT_TYPE_DURATION
Definition: opt.h:239
AV_PIX_FMT_YUV420P10
#define AV_PIX_FMT_YUV420P10
Definition: pixfmt.h:399
AV_PIX_FMT_BGR24
@ AV_PIX_FMT_BGR24
packed RGB 8:8:8, 24bpp, BGRBGR...
Definition: pixfmt.h:69
AV_PIX_FMT_BGRA
@ AV_PIX_FMT_BGRA
packed BGRA 8:8:8:8, 32bpp, BGRABGRA...
Definition: pixfmt.h:95
AV_PIX_FMT_YUV440P
@ AV_PIX_FMT_YUV440P
planar YUV 4:4:0 (1 Cr & Cb sample per 1x2 Y samples)
Definition: pixfmt.h:99
uninit
static av_cold void uninit(AVFilterContext *ctx)
Definition: vf_freezedetect.c:121
AVFilter::name
const char * name
Filter name.
Definition: avfilter.h:149
AV_PIX_FMT_YUVA422P10
#define AV_PIX_FMT_YUVA422P10
Definition: pixfmt.h:437
FF_FILTER_FORWARD_STATUS_BACK
#define FF_FILTER_FORWARD_STATUS_BACK(outlink, inlink)
Forward the status on an output link to an input link.
Definition: filters.h:199
AV_PIX_FMT_GRAY9
#define AV_PIX_FMT_GRAY9
Definition: pixfmt.h:379
AVFrame::data
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
Definition: frame.h:338
AVFilterFormats
A list of supported formats for one end of a filter link.
Definition: formats.h:65
ff_inlink_consume_frame
int ff_inlink_consume_frame(AVFilterLink *link, AVFrame **rframe)
Take a frame from the link's FIFO and update the link's stats.
Definition: avfilter.c:1492
AV_PIX_FMT_YUVA420P9
#define AV_PIX_FMT_YUVA420P9
Definition: pixfmt.h:433
AV_PIX_FMT_GBRP14
#define AV_PIX_FMT_GBRP14
Definition: pixfmt.h:417
AV_PIX_FMT_GBRAP
@ AV_PIX_FMT_GBRAP
planar GBRA 4:4:4:4 32bpp
Definition: pixfmt.h:215
AV_PIX_FMT_GBRP10
#define AV_PIX_FMT_GBRP10
Definition: pixfmt.h:415
AV_PIX_FMT_YUVA444P16
#define AV_PIX_FMT_YUVA444P16
Definition: pixfmt.h:443
is_frozen
static int is_frozen(FreezeDetectContext *s, AVFrame *reference, AVFrame *frame)
Definition: vf_freezedetect.c:127
AV_PIX_FMT_YUV422P9
#define AV_PIX_FMT_YUV422P9
Definition: pixfmt.h:397
config_input
static int config_input(AVFilterLink *inlink)
Definition: vf_freezedetect.c:100
AV_PIX_FMT_GRAY16
#define AV_PIX_FMT_GRAY16
Definition: pixfmt.h:383
AVFilterPad
A filter pad used for either input or output.
Definition: internal.h:54
freezedetect_inputs
static const AVFilterPad freezedetect_inputs[]
Definition: vf_freezedetect.c:208
AV_PIX_FMT_YUV444P10
#define AV_PIX_FMT_YUV444P10
Definition: pixfmt.h:402
AV_PIX_FMT_YUVJ411P
@ AV_PIX_FMT_YUVJ411P
planar YUV 4:1:1, 12bpp, (1 Cr & Cb sample per 4x1 Y samples) full scale (JPEG), deprecated in favor ...
Definition: pixfmt.h:258
avassert.h
av_cold
#define av_cold
Definition: attributes.h:90
inputs
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
Definition: filter_design.txt:243
AV_PIX_FMT_YUV422P16
#define AV_PIX_FMT_YUV422P16
Definition: pixfmt.h:411
ff_set_common_formats
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
duration
int64_t duration
Definition: movenc.c:64
AV_PIX_FMT_YUVJ422P
@ AV_PIX_FMT_YUVJ422P
planar YUV 4:2:2, 16bpp, full scale (JPEG), deprecated in favor of AV_PIX_FMT_YUV422P and setting col...
Definition: pixfmt.h:79
AV_PIX_FMT_GBRAP10
#define AV_PIX_FMT_GBRAP10
Definition: pixfmt.h:419
s
#define s(width, name)
Definition: cbs_vp9.c:257
AV_PIX_FMT_GBRAP12
#define AV_PIX_FMT_GBRAP12
Definition: pixfmt.h:420
AV_PIX_FMT_YUVA420P
@ AV_PIX_FMT_YUVA420P
planar YUV 4:2:0, 20bpp, (1 Cr & Cb sample per 2x2 Y & A samples)
Definition: pixfmt.h:101
AV_PIX_FMT_YUV444P16
#define AV_PIX_FMT_YUV444P16
Definition: pixfmt.h:412
FreezeDetectContext::duration
int64_t duration
minimum duration of frozen frame until notification
Definition: vf_freezedetect.c:47
AV_OPT_TYPE_DOUBLE
@ AV_OPT_TYPE_DOUBLE
Definition: opt.h:227
outputs
static const AVFilterPad outputs[]
Definition: af_acontrast.c:203
filters.h
pix_fmts
static enum AVPixelFormat pix_fmts[]
Definition: libkvazaar.c:303
AV_PIX_FMT_YUV420P9
#define AV_PIX_FMT_YUV420P9
Definition: pixfmt.h:396
AV_PIX_FMT_YUV420P16
#define AV_PIX_FMT_YUV420P16
Definition: pixfmt.h:410
ctx
AVFormatContext * ctx
Definition: movenc.c:48
AV_PIX_FMT_GRAY14
#define AV_PIX_FMT_GRAY14
Definition: pixfmt.h:382
av_frame_clone
AVFrame * av_frame_clone(const AVFrame *src)
Create a new frame that references the same data as src.
Definition: frame.c:541
av_rescale_q
int64_t av_rescale_q(int64_t a, AVRational bq, AVRational cq)
Rescale a 64-bit integer by 2 rational numbers.
Definition: mathematics.c:142
AV_PIX_FMT_YUV420P
@ AV_PIX_FMT_YUV420P
planar YUV 4:2:0, 12bpp, (1 Cr & Cb sample per 2x2 Y samples)
Definition: pixfmt.h:66
key
const char * key
Definition: hwcontext_opencl.c:168
AV_PIX_FMT_RGBA
@ AV_PIX_FMT_RGBA
packed RGBA 8:8:8:8, 32bpp, RGBARGBA...
Definition: pixfmt.h:93
AV_PIX_FMT_YUVJ444P
@ AV_PIX_FMT_YUVJ444P
planar YUV 4:4:4, 24bpp, full scale (JPEG), deprecated in favor of AV_PIX_FMT_YUV444P and setting col...
Definition: pixfmt.h:80
AV_PIX_FMT_GRAY10
#define AV_PIX_FMT_GRAY10
Definition: pixfmt.h:380
ff_scene_sad_get_fn
ff_scene_sad_fn ff_scene_sad_get_fn(int depth)
Definition: scene_sad.c:59
AV_PIX_FMT_GBRP16
#define AV_PIX_FMT_GBRP16
Definition: pixfmt.h:418
AVClass
Describe the class of an AVClass context structure.
Definition: log.h:67
FreezeDetectContext::reference_frame
AVFrame * reference_frame
Definition: vf_freezedetect.c:41
AVFILTER_DEFINE_CLASS
AVFILTER_DEFINE_CLASS(freezedetect)
NULL
#define NULL
Definition: coverity.c:32
AV_PIX_FMT_YUYV422
@ AV_PIX_FMT_YUYV422
packed YUV 4:2:2, 16bpp, Y0 Cb Y1 Cr
Definition: pixfmt.h:67
AV_PIX_FMT_YUVJ420P
@ AV_PIX_FMT_YUVJ420P
planar YUV 4:2:0, 12bpp, full scale (JPEG), deprecated in favor of AV_PIX_FMT_YUV420P and setting col...
Definition: pixfmt.h:78
AV_PIX_FMT_YUV440P10
#define AV_PIX_FMT_YUV440P10
Definition: pixfmt.h:401
FreezeDetectContext
Definition: vf_freezedetect.c:34
AV_PIX_FMT_YUV422P10
#define AV_PIX_FMT_YUV422P10
Definition: pixfmt.h:400
AV_PIX_FMT_GRAY8
@ AV_PIX_FMT_GRAY8
Y , 8bpp.
Definition: pixfmt.h:74
AV_PIX_FMT_GBRP9
#define AV_PIX_FMT_GBRP9
Definition: pixfmt.h:414
AV_PIX_FMT_ABGR
@ AV_PIX_FMT_ABGR
packed ABGR 8:8:8:8, 32bpp, ABGRABGR...
Definition: pixfmt.h:94
FreezeDetectContext::bitdepth
int bitdepth
Definition: vf_freezedetect.c:40
scene_sad.h
FreezeDetectContext::reference_n
int64_t reference_n
Definition: vf_freezedetect.c:43
AV_PIX_FMT_RGB24
@ AV_PIX_FMT_RGB24
packed RGB 8:8:8, 24bpp, RGBRGB...
Definition: pixfmt.h:68
av_ts2timestr
#define av_ts2timestr(ts, tb)
Convenience macro, the return value should be used only directly in function arguments but never stan...
Definition: timestamp.h:76
NULL_IF_CONFIG_SMALL
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification.
Definition: internal.h:117
AV_PIX_FMT_YUV422P12
#define AV_PIX_FMT_YUV422P12
Definition: pixfmt.h:404
AV_NOPTS_VALUE
#define AV_NOPTS_VALUE
Undefined timestamp value.
Definition: avutil.h:248
AV_PIX_FMT_YUV444P12
#define AV_PIX_FMT_YUV444P12
Definition: pixfmt.h:406
ff_vf_freezedetect
AVFilter ff_vf_freezedetect
Definition: vf_freezedetect.c:225
ff_scene_sad_fn
void(* ff_scene_sad_fn)(SCENE_SAD_PARAMS)
Definition: scene_sad.h:34
AV_PIX_FMT_NV16
@ AV_PIX_FMT_NV16
interleaved chroma YUV 4:2:2, 16bpp, (1 Cr & Cb sample per 2x1 Y samples)
Definition: pixfmt.h:201
AV_PIX_FMT_YUVA444P
@ AV_PIX_FMT_YUVA444P
planar YUV 4:4:4 32bpp, (1 Cr & Cb sample per 1x1 Y & A samples)
Definition: pixfmt.h:177
AV_PIX_FMT_YUVA444P10
#define AV_PIX_FMT_YUVA444P10
Definition: pixfmt.h:438
FF_FILTER_FORWARD_WANTED
FF_FILTER_FORWARD_WANTED(outlink, inlink)
freezedetect_options
static const AVOption freezedetect_options[]
Definition: vf_freezedetect.c:54
query_formats
static int query_formats(AVFilterContext *ctx)
Definition: vf_freezedetect.c:65
AV_LOG_INFO
#define AV_LOG_INFO
Standard information.
Definition: log.h:205
AV_PIX_FMT_ARGB
@ AV_PIX_FMT_ARGB
packed ARGB 8:8:8:8, 32bpp, ARGBARGB...
Definition: pixfmt.h:92
av_image_get_linesize
int av_image_get_linesize(enum AVPixelFormat pix_fmt, int width, int plane)
Compute the size of an image line with format pix_fmt and width width for the plane plane.
Definition: imgutils.c:76
freezedetect_outputs
static const AVFilterPad freezedetect_outputs[]
Definition: vf_freezedetect.c:217
FreezeDetectContext::height
ptrdiff_t height[4]
Definition: vf_freezedetect.c:38
AV_PIX_FMT_GBRP12
#define AV_PIX_FMT_GBRP12
Definition: pixfmt.h:416
value
it s the only field you need to keep assuming you have a context There is some magic you don t need to care about around this just let it vf default value
Definition: writing_filters.txt:86
AV_PIX_FMT_YUVJ440P
@ AV_PIX_FMT_YUVJ440P
planar YUV 4:4:0 full scale (JPEG), deprecated in favor of AV_PIX_FMT_YUV440P and setting color_range
Definition: pixfmt.h:100
av_inv_q
static av_always_inline AVRational av_inv_q(AVRational q)
Invert a rational.
Definition: rational.h:159
FreezeDetectContext::frozen
int frozen
Definition: vf_freezedetect.c:44
AV_PIX_FMT_NV21
@ AV_PIX_FMT_NV21
as above, but U and V bytes are swapped
Definition: pixfmt.h:90
AVFilterPad::name
const char * name
Pad name.
Definition: internal.h:60
FreezeDetectContext::width
ptrdiff_t width[4]
Definition: vf_freezedetect.c:37
AV_PIX_FMT_YUV444P9
#define AV_PIX_FMT_YUV444P9
Definition: pixfmt.h:398
AVFilter
Filter definition.
Definition: avfilter.h:145
AV_PIX_FMT_YVYU422
@ AV_PIX_FMT_YVYU422
packed YUV 4:2:2, 16bpp, Y0 Cr Y1 Cb
Definition: pixfmt.h:210
ret
ret
Definition: filter_design.txt:187
AV_PIX_FMT_NV12
@ AV_PIX_FMT_NV12
planar YUV 4:2:0, 12bpp, 1 plane for Y and 1 plane for the UV components, which are interleaved (firs...
Definition: pixfmt.h:89
frame
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 it should directly call filter_frame on the corresponding output For a if there are queued frames already one of these frames should be pushed If the filter should request a frame on one of its repeatedly until at least one frame has been pushed Return or at least make progress towards producing a frame
Definition: filter_design.txt:264
AV_PIX_FMT_YUVA444P9
#define AV_PIX_FMT_YUVA444P9
Definition: pixfmt.h:435
AV_PIX_FMT_YUV420P12
#define AV_PIX_FMT_YUV420P12
Definition: pixfmt.h:403
AV_PIX_FMT_UYVY422
@ AV_PIX_FMT_UYVY422
packed YUV 4:2:2, 16bpp, Cb Y0 Cr Y1
Definition: pixfmt.h:81
AV_PIX_FMT_YUV422P14
#define AV_PIX_FMT_YUV422P14
Definition: pixfmt.h:408
V
#define V
Definition: vf_freezedetect.c:51
noise
static int noise(AVBSFContext *ctx, AVPacket *pkt)
Definition: noise_bsf.c:36
AV_PIX_FMT_NONE
@ AV_PIX_FMT_NONE
Definition: pixfmt.h:65
avfilter.h
set_meta
static int set_meta(FreezeDetectContext *s, AVFrame *frame, const char *key, const char *value)
Definition: vf_freezedetect.c:147
AVPixFmtDescriptor::comp
AVComponentDescriptor comp[4]
Parameters that describe how pixels are packed.
Definition: pixdesc.h:117
OFFSET
#define OFFSET(x)
Definition: vf_freezedetect.c:50
AV_PIX_FMT_YUV444P
@ AV_PIX_FMT_YUV444P
planar YUV 4:4:4, 24bpp, (1 Cr & Cb sample per 1x1 Y samples)
Definition: pixfmt.h:71
AVFilterContext
An instance of a filter.
Definition: avfilter.h:341
AV_PIX_FMT_GBRP
@ AV_PIX_FMT_GBRP
planar GBR 4:4:4 24bpp
Definition: pixfmt.h:168
AVMEDIA_TYPE_VIDEO
@ AVMEDIA_TYPE_VIDEO
Definition: avutil.h:201
AV_PIX_FMT_YUV422P
@ AV_PIX_FMT_YUV422P
planar YUV 4:2:2, 16bpp, (1 Cr & Cb sample per 2x1 Y samples)
Definition: pixfmt.h:70
AVPixFmtDescriptor
Descriptor that unambiguously describes how the bits of a pixel are stored in the up to 4 data planes...
Definition: pixdesc.h:81
FF_FILTER_FORWARD_STATUS
FF_FILTER_FORWARD_STATUS(inlink, outlink)
av_dict_set
int av_dict_set(AVDictionary **pm, const char *key, const char *value, int flags)
Set the given entry in *pm, overwriting an existing entry.
Definition: dict.c:70
AV_PIX_FMT_YUV411P
@ AV_PIX_FMT_YUV411P
planar YUV 4:1:1, 12bpp, (1 Cr & Cb sample per 4x1 Y samples)
Definition: pixfmt.h:73
imgutils.h
timestamp.h
AVFrame::linesize
int linesize[AV_NUM_DATA_POINTERS]
For video, size in bytes of each picture line.
Definition: frame.h:355
AV_PIX_FMT_YUV410P
@ AV_PIX_FMT_YUV410P
planar YUV 4:1:0, 9bpp, (1 Cr & Cb sample per 4x4 Y samples)
Definition: pixfmt.h:72
av_log
#define av_log(a,...)
Definition: tableprint_vlc.h:28
FreezeDetectContext::sad
ff_scene_sad_fn sad
Definition: vf_freezedetect.c:39
AV_PIX_FMT_YUV440P12
#define AV_PIX_FMT_YUV440P12
Definition: pixfmt.h:405
AV_PIX_FMT_YUV444P14
#define AV_PIX_FMT_YUV444P14
Definition: pixfmt.h:409
AV_PIX_FMT_GRAY12
#define AV_PIX_FMT_GRAY12
Definition: pixfmt.h:381
F
#define F
Definition: vf_freezedetect.c:52
AVPixFmtDescriptor::log2_chroma_h
uint8_t log2_chroma_h
Amount to shift the luma height right to find the chroma height.
Definition: pixdesc.h:101
AV_PIX_FMT_YUVA422P
@ AV_PIX_FMT_YUVA422P
planar YUV 4:2:2 24bpp, (1 Cr & Cb sample per 2x1 Y & A samples)
Definition: pixfmt.h:176
AV_PIX_FMT_YUV420P14
#define AV_PIX_FMT_YUV420P14
Definition: pixfmt.h:407