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 #include "libavutil/opt.h"
20 #include "libavutil/time.h"
21 #include "avfilter.h"
22 #include "formats.h"
23 #include "internal.h"
24
25 enum BenchAction {
26 ACTION_START,
27 ACTION_STOP,
28 NB_ACTION
29 };
30
31 typedef struct BenchContext {
32 const AVClass *class;
33 int action;
34 int64_t max, min;
35 int64_t sum;
36 int n;
37 } BenchContext;
38
39 #define OFFSET(x) offsetof(BenchContext, x)
40 #define DEFINE_OPTIONS(filt_name, FLAGS) \
41 static const AVOption filt_name##_options[] = { \
42 { "action", "set action", OFFSET(action), AV_OPT_TYPE_INT, {.i64=ACTION_START}, 0, NB_ACTION-1, FLAGS, "action" }, \
43 { "start", "start timer", 0, AV_OPT_TYPE_CONST, {.i64=ACTION_START}, INT_MIN, INT_MAX, FLAGS, "action" }, \
44 { "stop", "stop timer", 0, AV_OPT_TYPE_CONST, {.i64=ACTION_STOP}, INT_MIN, INT_MAX, FLAGS, "action" }, \
45 { NULL } \
46 }
47
48 #define START_TIME_KEY "lavfi.bench.start_time"
49 #define T2F(v) ((v) / 1000000.)
50
init(AVFilterContext * ctx)51 static av_cold int init(AVFilterContext *ctx)
52 {
53 BenchContext *s = ctx->priv;
54 s->min = INT64_MAX;
55 s->max = INT64_MIN;
56 return 0;
57 }
58
filter_frame(AVFilterLink * inlink,AVFrame * in)59 static int filter_frame(AVFilterLink *inlink, AVFrame *in)
60 {
61 AVFilterContext *ctx = inlink->dst;
62 BenchContext *s = ctx->priv;
63 AVFilterLink *outlink = ctx->outputs[0];
64 const int64_t t = av_gettime();
65
66 if (t < 0)
67 return ff_filter_frame(outlink, in);
68
69 if (s->action == ACTION_START) {
70 av_dict_set_int(&in->metadata, START_TIME_KEY, t, 0);
71 } else if (s->action == ACTION_STOP) {
72 AVDictionaryEntry *e = av_dict_get(in->metadata, START_TIME_KEY, NULL, 0);
73 if (e) {
74 const int64_t start = strtoll(e->value, NULL, 0);
75 const int64_t diff = t - start;
76 s->sum += diff;
77 s->n++;
78 s->min = FFMIN(s->min, diff);
79 s->max = FFMAX(s->max, diff);
80 av_log(s, AV_LOG_INFO, "t:%f avg:%f max:%f min:%f\n",
81 T2F(diff), T2F(s->sum / s->n), T2F(s->max), T2F(s->min));
82 }
83 av_dict_set(&in->metadata, START_TIME_KEY, NULL, 0);
84 }
85
86 return ff_filter_frame(outlink, in);
87 }
88
89 #if CONFIG_BENCH_FILTER
90 DEFINE_OPTIONS(bench, AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM);
91 AVFILTER_DEFINE_CLASS(bench);
92
93 static const AVFilterPad bench_inputs[] = {
94 {
95 .name = "default",
96 .type = AVMEDIA_TYPE_VIDEO,
97 .filter_frame = filter_frame,
98 },
99 { NULL }
100 };
101
102 static const AVFilterPad bench_outputs[] = {
103 {
104 .name = "default",
105 .type = AVMEDIA_TYPE_VIDEO,
106 },
107 { NULL }
108 };
109
110 AVFilter ff_vf_bench = {
111 .name = "bench",
112 .description = NULL_IF_CONFIG_SMALL("Benchmark part of a filtergraph."),
113 .priv_size = sizeof(BenchContext),
114 .init = init,
115 .inputs = bench_inputs,
116 .outputs = bench_outputs,
117 .priv_class = &bench_class,
118 };
119 #endif /* CONFIG_BENCH_FILTER */
120
121 #if CONFIG_ABENCH_FILTER
122 DEFINE_OPTIONS(abench, AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_AUDIO_PARAM);
123 AVFILTER_DEFINE_CLASS(abench);
124
125 static const AVFilterPad abench_inputs[] = {
126 {
127 .name = "default",
128 .type = AVMEDIA_TYPE_AUDIO,
129 .filter_frame = filter_frame,
130 },
131 { NULL }
132 };
133
134 static const AVFilterPad abench_outputs[] = {
135 {
136 .name = "default",
137 .type = AVMEDIA_TYPE_AUDIO,
138 },
139 { NULL }
140 };
141
142 AVFilter ff_af_abench = {
143 .name = "abench",
144 .description = NULL_IF_CONFIG_SMALL("Benchmark part of a filtergraph."),
145 .priv_size = sizeof(BenchContext),
146 .init = init,
147 .inputs = abench_inputs,
148 .outputs = abench_outputs,
149 .priv_class = &abench_class,
150 };
151 #endif /* CONFIG_ABENCH_FILTER */
152