FFmpeg coverage


Directory: ../../../ffmpeg/
File: src/libavfilter/vf_vfrdet.c
Date: 2024-02-29 09:57:37
Exec Total Coverage
Lines: 0 32 0.0%
Functions: 0 3 0.0%
Branches: 0 8 0.0%

Line Branch Exec Source
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 #include "video.h"
25
26 typedef struct VFRDETContext {
27 const AVClass *class;
28
29 int64_t prev_pts;
30 int64_t delta;
31 int64_t min_delta;
32 int64_t max_delta;
33 int64_t avg_delta;
34
35 uint64_t vfr;
36 uint64_t cfr;
37 } VFRDETContext;
38
39 static int filter_frame(AVFilterLink *inlink, AVFrame *in)
40 {
41 AVFilterContext *ctx = inlink->dst;
42 VFRDETContext *s = ctx->priv;
43
44 if (s->prev_pts != AV_NOPTS_VALUE) {
45 int64_t delta = in->pts - s->prev_pts;
46
47 if (s->delta == AV_NOPTS_VALUE) {
48 s->delta = delta;
49 s->min_delta = delta;
50 s->max_delta = delta;
51 }
52
53 if (s->delta != delta) {
54 s->vfr++;
55 s->delta = delta;
56 s->min_delta = FFMIN(delta, s->min_delta);
57 s->max_delta = FFMAX(delta, s->max_delta);
58 s->avg_delta += delta;
59 } else {
60 s->cfr++;
61 }
62 }
63
64 s->prev_pts = in->pts;
65
66 return ff_filter_frame(ctx->outputs[0], in);
67 }
68
69 static av_cold int init(AVFilterContext *ctx)
70 {
71 VFRDETContext *s = ctx->priv;
72
73 s->prev_pts = AV_NOPTS_VALUE;
74 s->delta = AV_NOPTS_VALUE;
75 s->min_delta = INT64_MAX;
76 s->max_delta = INT64_MIN;
77
78 return 0;
79 }
80
81 static av_cold void uninit(AVFilterContext *ctx)
82 {
83 VFRDETContext *s = ctx->priv;
84
85 av_log(ctx, AV_LOG_INFO, "VFR:%f (%"PRIu64"/%"PRIu64")", s->vfr / (float)(s->vfr + s->cfr), s->vfr, s->cfr);
86 if (s->vfr)
87 av_log(ctx, AV_LOG_INFO, " min: %"PRId64" max: %"PRId64" avg: %"PRId64, s->min_delta, s->max_delta, s->avg_delta / s->vfr);
88 av_log(ctx, AV_LOG_INFO, "\n");
89 }
90
91 static const AVFilterPad vfrdet_inputs[] = {
92 {
93 .name = "default",
94 .type = AVMEDIA_TYPE_VIDEO,
95 .filter_frame = filter_frame,
96 },
97 };
98
99 const AVFilter ff_vf_vfrdet = {
100 .name = "vfrdet",
101 .description = NULL_IF_CONFIG_SMALL("Variable frame rate detect filter."),
102 .priv_size = sizeof(VFRDETContext),
103 .init = init,
104 .uninit = uninit,
105 .flags = AVFILTER_FLAG_METADATA_ONLY,
106 FILTER_INPUTS(vfrdet_inputs),
107 FILTER_OUTPUTS(ff_video_default_filterpad),
108 };
109