FFmpeg coverage


Directory: ../../../ffmpeg/
File: src/libavfilter/f_latency.c
Date: 2024-07-24 19:24:46
Exec Total Coverage
Lines: 0 41 0.0%
Functions: 0 3 0.0%
Branches: 0 27 0.0%

Line Branch Exec Source
1 /*
2 * Copyright (c) 2021 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 "config_components.h"
22
23 #include "audio.h"
24 #include "avfilter.h"
25 #include "filters.h"
26 #include "internal.h"
27 #include "video.h"
28
29 typedef struct LatencyContext {
30 int64_t min_latency;
31 int64_t max_latency;
32 int64_t sum;
33 } LatencyContext;
34
35 static av_cold int init(AVFilterContext *ctx)
36 {
37 LatencyContext *s = ctx->priv;
38
39 s->min_latency = INT64_MAX;
40 s->max_latency = INT64_MIN;
41
42 return 0;
43 }
44
45 static int activate(AVFilterContext *ctx)
46 {
47 LatencyContext *s = ctx->priv;
48 AVFilterLink *inlink = ctx->inputs[0];
49 AVFilterLink *outlink = ctx->outputs[0];
50
51 FF_FILTER_FORWARD_STATUS_BACK(outlink, inlink);
52
53 if (!ctx->is_disabled && ctx->inputs[0]->src &&
54 ctx->inputs[0]->src->nb_inputs > 0) {
55 AVFilterLink *prevlink = ctx->inputs[0]->src->inputs[0];
56 int64_t delta = 0;
57
58 switch (prevlink->type) {
59 case AVMEDIA_TYPE_AUDIO:
60 delta = prevlink->sample_count_in - inlink->sample_count_out;
61 break;
62 case AVMEDIA_TYPE_VIDEO:
63 delta = prevlink->frame_count_in - inlink->frame_count_out;
64 break;
65 }
66
67 if (delta > 0) {
68 s->min_latency = FFMIN(s->min_latency, delta);
69 s->max_latency = FFMAX(s->max_latency, delta);
70 }
71 }
72
73 if (ff_inlink_queued_frames(inlink)) {
74 AVFrame *frame = NULL;
75 int ret;
76
77 ret = ff_inlink_consume_frame(inlink, &frame);
78 if (ret < 0)
79 return ret;
80 if (ret > 0)
81 return ff_filter_frame(outlink, frame);
82 }
83
84 FF_FILTER_FORWARD_STATUS(inlink, outlink);
85 FF_FILTER_FORWARD_WANTED(outlink, inlink);
86
87 return FFERROR_NOT_READY;
88 }
89
90 static av_cold void uninit(AVFilterContext *ctx)
91 {
92 LatencyContext *s = ctx->priv;
93
94 if (s->min_latency != INT64_MAX)
95 av_log(ctx, AV_LOG_INFO, "Min latency: %"PRId64"\n", s->min_latency);
96 if (s->max_latency != INT64_MIN)
97 av_log(ctx, AV_LOG_INFO, "Max latency: %"PRId64"\n", s->max_latency);
98 }
99
100 #if CONFIG_LATENCY_FILTER
101
102 const AVFilter ff_vf_latency = {
103 .name = "latency",
104 .description = NULL_IF_CONFIG_SMALL("Report video filtering latency."),
105 .priv_size = sizeof(LatencyContext),
106 .init = init,
107 .uninit = uninit,
108 .activate = activate,
109 .flags = AVFILTER_FLAG_SUPPORT_TIMELINE_INTERNAL |
110 AVFILTER_FLAG_METADATA_ONLY,
111 FILTER_INPUTS(ff_video_default_filterpad),
112 FILTER_OUTPUTS(ff_video_default_filterpad),
113 };
114
115 #endif // CONFIG_LATENCY_FILTER
116
117 #if CONFIG_ALATENCY_FILTER
118
119 const AVFilter ff_af_alatency = {
120 .name = "alatency",
121 .description = NULL_IF_CONFIG_SMALL("Report audio filtering latency."),
122 .priv_size = sizeof(LatencyContext),
123 .init = init,
124 .uninit = uninit,
125 .activate = activate,
126 .flags = AVFILTER_FLAG_SUPPORT_TIMELINE_INTERNAL,
127 FILTER_INPUTS(ff_audio_default_filterpad),
128 FILTER_OUTPUTS(ff_audio_default_filterpad),
129 };
130 #endif // CONFIG_ALATENCY_FILTER
131