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vf_vfrdet.c
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1 /*
2  * Copyright (C) 2017 Paul B Mahol
3  *
4  * This file is part of FFmpeg.
5  *
6  * FFmpeg is free software; you can redistribute it and/or
7  * modify it under the terms of the GNU Lesser General Public
8  * License as published by the Free Software Foundation; either
9  * version 2.1 of the License, or (at your option) any later version.
10  *
11  * FFmpeg is distributed in the hope that it will be useful,
12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14  * Lesser General Public License for more details.
15  *
16  * You should have received a copy of the GNU Lesser General Public
17  * License along with FFmpeg; if not, write to the Free Software
18  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19  */
20 
21 #include "libavutil/common.h"
22 #include "libavutil/opt.h"
23 #include "internal.h"
24 
25 typedef struct VFRDETContext {
26  const AVClass *class;
27 
28  int64_t prev_pts;
29  int64_t delta;
30  int64_t min_delta;
31  int64_t max_delta;
32 
33  uint64_t vfr;
34  uint64_t cfr;
36 
37 static int filter_frame(AVFilterLink *inlink, AVFrame *in)
38 {
39  AVFilterContext *ctx = inlink->dst;
40  VFRDETContext *s = ctx->priv;
41 
42  if (s->prev_pts != AV_NOPTS_VALUE) {
43  int64_t delta = in->pts - s->prev_pts;
44 
45  if (s->delta == AV_NOPTS_VALUE) {
46  s->delta = delta;
47  }
48 
49  if (s->delta != delta) {
50  s->vfr++;
51  s->delta = delta;
52  s->min_delta = FFMIN(delta, s->min_delta);
53  s->max_delta = FFMAX(delta, s->max_delta);
54  } else {
55  s->cfr++;
56  }
57  }
58 
59  s->prev_pts = in->pts;
60 
61  return ff_filter_frame(ctx->outputs[0], in);
62 }
63 
65 {
66  VFRDETContext *s = ctx->priv;
67 
69  s->delta = AV_NOPTS_VALUE;
70  s->min_delta = INT64_MAX;
71  s->max_delta = INT64_MIN;
72 
73  return 0;
74 }
75 
77 {
78  VFRDETContext *s = ctx->priv;
79 
80  av_log(ctx, AV_LOG_INFO, "VFR:%f (%"PRIu64"/%"PRIu64")", s->vfr / (float)(s->vfr + s->cfr), s->vfr, s->cfr);
81  if (s->vfr)
82  av_log(ctx, AV_LOG_INFO, " min: %"PRId64" max: %"PRId64")", s->min_delta, s->max_delta);
83  av_log(ctx, AV_LOG_INFO, "\n");
84 }
85 
86 static const AVFilterPad vfrdet_inputs[] = {
87  {
88  .name = "default",
89  .type = AVMEDIA_TYPE_VIDEO,
90  .filter_frame = filter_frame,
91  },
92  { NULL }
93 };
94 
95 static const AVFilterPad vfrdet_outputs[] = {
96  {
97  .name = "default",
98  .type = AVMEDIA_TYPE_VIDEO,
99  },
100  { NULL }
101 };
102 
104  .name = "vfrdet",
105  .description = NULL_IF_CONFIG_SMALL("Variable frame rate detect filter."),
106  .priv_size = sizeof(VFRDETContext),
107  .init = init,
108  .uninit = uninit,
109  .inputs = vfrdet_inputs,
110  .outputs = vfrdet_outputs,
111 };
int64_t min_delta
Definition: vf_vfrdet.c:30
#define NULL
Definition: coverity.c:32
This structure describes decoded (raw) audio or video data.
Definition: frame.h:226
const char * name
Pad name.
Definition: internal.h:60
int ff_filter_frame(AVFilterLink *link, AVFrame *frame)
Send a frame of data to the next filter.
Definition: avfilter.c:1080
static const AVFilterPad vfrdet_outputs[]
Definition: vf_vfrdet.c:95
uint64_t vfr
Definition: vf_vfrdet.c:33
#define av_cold
Definition: attributes.h:82
static const AVFilterPad vfrdet_inputs[]
Definition: vf_vfrdet.c:86
float delta
AVOptions.
int64_t delta
Definition: vf_vfrdet.c:29
int64_t pts
Presentation timestamp in time_base units (time when frame should be shown to user).
Definition: frame.h:319
AVFilter ff_vf_vfrdet
Definition: vf_vfrdet.c:103
#define av_log(a,...)
int64_t max_delta
Definition: vf_vfrdet.c:31
A filter pad used for either input or output.
Definition: internal.h:54
static int filter_frame(AVFilterLink *inlink, AVFrame *in)
Definition: vf_vfrdet.c:37
#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 FFMAX(a, b)
Definition: common.h:94
static av_cold void uninit(AVFilterContext *ctx)
Definition: vf_vfrdet.c:76
#define FFMIN(a, b)
Definition: common.h:96
AVFormatContext * ctx
Definition: movenc.c:48
#define s(width, name)
Definition: cbs_vp9.c:257
int64_t prev_pts
Definition: vf_vfrdet.c:28
static const AVFilterPad inputs[]
Definition: af_acontrast.c:193
static const AVFilterPad outputs[]
Definition: af_acontrast.c:203
#define AV_LOG_INFO
Standard information.
Definition: log.h:187
static av_cold int init(AVFilterContext *ctx)
Definition: vf_vfrdet.c:64
uint8_t pi<< 24) CONV_FUNC_GROUP(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_U8, uint8_t,(*(constuint8_t *) pi-0x80)*(1.0f/(1<< 7))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_U8, uint8_t,(*(constuint8_t *) pi-0x80)*(1.0/(1<< 7))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_S16, int16_t,(*(constint16_t *) pi >>8)+0x80) CONV_FUNC_GROUP(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_S16, int16_t,*(constint16_t *) pi *(1.0f/(1<< 15))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_S16, int16_t,*(constint16_t *) pi *(1.0/(1<< 15))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_S32, int32_t,(*(constint32_t *) pi >>24)+0x80) CONV_FUNC_GROUP(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_S32, int32_t,*(constint32_t *) pi *(1.0f/(1U<< 31))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_S32, int32_t,*(constint32_t *) pi *(1.0/(1U<< 31))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_FLT, float, av_clip_uint8(lrintf(*(constfloat *) pi *(1<< 7))+0x80)) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S16, int16_t, AV_SAMPLE_FMT_FLT, float, av_clip_int16(lrintf(*(constfloat *) pi *(1<< 15)))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_FLT, float, av_clipl_int32(llrintf(*(constfloat *) pi *(1U<< 31)))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_DBL, double, av_clip_uint8(lrint(*(constdouble *) pi *(1<< 7))+0x80)) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S16, int16_t, AV_SAMPLE_FMT_DBL, double, av_clip_int16(lrint(*(constdouble *) pi *(1<< 15)))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_DBL, double, av_clipl_int32(llrint(*(constdouble *) pi *(1U<< 31))))#defineSET_CONV_FUNC_GROUP(ofmt, ifmt) staticvoidset_generic_function(AudioConvert *ac){}voidff_audio_convert_free(AudioConvert **ac){if(!*ac) return;ff_dither_free(&(*ac) ->dc);av_freep(ac);}AudioConvert *ff_audio_convert_alloc(AVAudioResampleContext *avr, enumAVSampleFormatout_fmt, enumAVSampleFormatin_fmt, intchannels, intsample_rate, intapply_map){AudioConvert *ac;intin_planar, out_planar;ac=av_mallocz(sizeof(*ac));if(!ac) returnNULL;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);returnNULL;}returnac;}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;}elseif(in_planar) ac->func_type=CONV_FUNC_TYPE_INTERLEAVE;elseac->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);returnac;}intff_audio_convert(AudioConvert *ac, AudioData *out, AudioData *in){intuse_generic=1;intlen=in->nb_samples;intp;if(ac->dc){av_log(ac->avr, AV_LOG_TRACE,"%dsamples-audio_convert:%sto%s(dithered)\n", len, av_get_sample_fmt_name(ac->in_fmt), av_get_sample_fmt_name(ac->out_fmt));returnff_convert_dither(ac-> in
uint64_t cfr
Definition: vf_vfrdet.c:34
Describe the class of an AVClass context structure.
Definition: log.h:67
Filter definition.
Definition: avfilter.h:144
const char * name
Filter name.
Definition: avfilter.h:148
AVFilterLink ** outputs
array of pointers to output links
Definition: avfilter.h:350
common internal and external API header
An instance of a filter.
Definition: avfilter.h:338
internal API functions
#define AV_NOPTS_VALUE
Undefined timestamp value.
Definition: avutil.h:248