FFmpeg  4.4.6
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 
33 
34  uint64_t vfr;
35  uint64_t cfr;
37 
38 static int filter_frame(AVFilterLink *inlink, AVFrame *in)
39 {
40  AVFilterContext *ctx = inlink->dst;
41  VFRDETContext *s = ctx->priv;
42 
43  if (s->prev_pts != AV_NOPTS_VALUE) {
44  int64_t delta = in->pts - s->prev_pts;
45 
46  if (s->delta == AV_NOPTS_VALUE) {
47  s->delta = delta;
48  s->min_delta = delta;
49  s->max_delta = delta;
50  }
51 
52  if (s->delta != delta) {
53  s->vfr++;
54  s->delta = delta;
55  s->min_delta = FFMIN(delta, s->min_delta);
56  s->max_delta = FFMAX(delta, s->max_delta);
57  s->avg_delta += delta;
58  } else {
59  s->cfr++;
60  }
61  }
62 
63  s->prev_pts = in->pts;
64 
65  return ff_filter_frame(ctx->outputs[0], in);
66 }
67 
69 {
70  VFRDETContext *s = ctx->priv;
71 
72  s->prev_pts = AV_NOPTS_VALUE;
73  s->delta = AV_NOPTS_VALUE;
74  s->min_delta = INT64_MAX;
75  s->max_delta = INT64_MIN;
76 
77  return 0;
78 }
79 
81 {
82  VFRDETContext *s = ctx->priv;
83 
84  av_log(ctx, AV_LOG_INFO, "VFR:%f (%"PRIu64"/%"PRIu64")", s->vfr / (float)(s->vfr + s->cfr), s->vfr, s->cfr);
85  if (s->vfr)
86  av_log(ctx, AV_LOG_INFO, " min: %"PRId64" max: %"PRId64" avg: %"PRId64, s->min_delta, s->max_delta, s->avg_delta / s->vfr);
87  av_log(ctx, AV_LOG_INFO, "\n");
88 }
89 
90 static const AVFilterPad vfrdet_inputs[] = {
91  {
92  .name = "default",
93  .type = AVMEDIA_TYPE_VIDEO,
94  .filter_frame = filter_frame,
95  },
96  { NULL }
97 };
98 
99 static const AVFilterPad vfrdet_outputs[] = {
100  {
101  .name = "default",
102  .type = AVMEDIA_TYPE_VIDEO,
103  },
104  { NULL }
105 };
106 
108  .name = "vfrdet",
109  .description = NULL_IF_CONFIG_SMALL("Variable frame rate detect filter."),
110  .priv_size = sizeof(VFRDETContext),
111  .init = init,
112  .uninit = uninit,
115 };
static const AVFilterPad inputs[]
Definition: af_acontrast.c:193
static const AVFilterPad outputs[]
Definition: af_acontrast.c:203
#define av_cold
Definition: attributes.h:88
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
int ff_filter_frame(AVFilterLink *link, AVFrame *frame)
Send a frame of data to the next filter.
Definition: avfilter.c:1096
#define s(width, name)
Definition: cbs_vp9.c:257
common internal and external API header
#define FFMIN(a, b)
Definition: common.h:105
#define FFMAX(a, b)
Definition: common.h:103
#define NULL
Definition: coverity.c:32
long long int64_t
Definition: coverity.c:34
#define AV_LOG_INFO
Standard information.
Definition: log.h:205
@ AVMEDIA_TYPE_VIDEO
Definition: avutil.h:201
#define AV_NOPTS_VALUE
Undefined timestamp value.
Definition: avutil.h:248
common internal API header
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification.
Definition: internal.h:117
AVOptions.
Describe the class of an AVClass context structure.
Definition: log.h:67
An instance of a filter.
Definition: avfilter.h:341
A filter pad used for either input or output.
Definition: internal.h:54
const char * name
Pad name.
Definition: internal.h:60
Filter definition.
Definition: avfilter.h:145
const char * name
Filter name.
Definition: avfilter.h:149
This structure describes decoded (raw) audio or video data.
Definition: frame.h:318
int64_t min_delta
Definition: vf_vfrdet.c:30
int64_t max_delta
Definition: vf_vfrdet.c:31
int64_t prev_pts
Definition: vf_vfrdet.c:28
int64_t delta
Definition: vf_vfrdet.c:29
uint64_t vfr
Definition: vf_vfrdet.c:34
int64_t avg_delta
Definition: vf_vfrdet.c:32
uint64_t cfr
Definition: vf_vfrdet.c:35
#define av_log(a,...)
AVFormatContext * ctx
Definition: movenc.c:48
static const AVFilterPad vfrdet_outputs[]
Definition: vf_vfrdet.c:99
AVFilter ff_vf_vfrdet
Definition: vf_vfrdet.c:107
static int filter_frame(AVFilterLink *inlink, AVFrame *in)
Definition: vf_vfrdet.c:38
static av_cold int init(AVFilterContext *ctx)
Definition: vf_vfrdet.c:68
static av_cold void uninit(AVFilterContext *ctx)
Definition: vf_vfrdet.c:80
static const AVFilterPad vfrdet_inputs[]
Definition: vf_vfrdet.c:90
float delta