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/*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "libavutil/opt.h"
#include "libavutil/time.h"
#include "avfilter.h"
#include "formats.h"
#include "internal.h"
enum BenchAction {
ACTION_START,
ACTION_STOP,
NB_ACTION
};
typedef struct BenchContext {
const AVClass *class;
int action;
int64_t max, min;
int64_t sum;
int n;
} BenchContext;
#define OFFSET(x) offsetof(BenchContext, x)
#define DEFINE_OPTIONS(filt_name, FLAGS) \
static const AVOption filt_name##_options[] = { \
{ "action", "set action", OFFSET(action), AV_OPT_TYPE_INT, {.i64=ACTION_START}, 0, NB_ACTION-1, FLAGS, "action" }, \
{ "start", "start timer", 0, AV_OPT_TYPE_CONST, {.i64=ACTION_START}, INT_MIN, INT_MAX, FLAGS, "action" }, \
{ "stop", "stop timer", 0, AV_OPT_TYPE_CONST, {.i64=ACTION_STOP}, INT_MIN, INT_MAX, FLAGS, "action" }, \
{ NULL } \
}
#define START_TIME_KEY "lavfi.bench.start_time"
#define T2F(v) ((v) / 1000000.)
static av_cold int init(AVFilterContext *ctx)
{
BenchContext *s = ctx->priv;
s->min = INT64_MAX;
s->max = INT64_MIN;
return 0;
}
static int filter_frame(AVFilterLink *inlink, AVFrame *in)
{
AVFilterContext *ctx = inlink->dst;
BenchContext *s = ctx->priv;
AVFilterLink *outlink = ctx->outputs[0];
const int64_t t = av_gettime();
if (t < 0)
return ff_filter_frame(outlink, in);
if (s->action == ACTION_START) {
av_dict_set_int(&in->metadata, START_TIME_KEY, t, 0);
} else if (s->action == ACTION_STOP) {
AVDictionaryEntry *e = av_dict_get(in->metadata, START_TIME_KEY, NULL, 0);
if (e) {
const int64_t start = strtoll(e->value, NULL, 0);
const int64_t diff = t - start;
s->sum += diff;
s->n++;
s->min = FFMIN(s->min, diff);
s->max = FFMAX(s->max, diff);
av_log(s, AV_LOG_INFO, "t:%f avg:%f max:%f min:%f\n",
T2F(diff), T2F(s->sum / s->n), T2F(s->max), T2F(s->min));
}
av_dict_set(&in->metadata, START_TIME_KEY, NULL, 0);
}
return ff_filter_frame(outlink, in);
}
#if CONFIG_BENCH_FILTER
DEFINE_OPTIONS(bench, AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM);
AVFILTER_DEFINE_CLASS(bench);
static const AVFilterPad bench_inputs[] = {
{
.name = "default",
.type = AVMEDIA_TYPE_VIDEO,
.filter_frame = filter_frame,
},
};
static const AVFilterPad bench_outputs[] = {
{
.name = "default",
.type = AVMEDIA_TYPE_VIDEO,
},
};
const AVFilter ff_vf_bench = {
.name = "bench",
.description = NULL_IF_CONFIG_SMALL("Benchmark part of a filtergraph."),
.priv_size = sizeof(BenchContext),
.init = init,
FILTER_INPUTS(bench_inputs),
FILTER_OUTPUTS(bench_outputs),
.priv_class = &bench_class,
.flags = AVFILTER_FLAG_METADATA_ONLY,
};
#endif /* CONFIG_BENCH_FILTER */
#if CONFIG_ABENCH_FILTER
DEFINE_OPTIONS(abench, AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_AUDIO_PARAM);
AVFILTER_DEFINE_CLASS(abench);
static const AVFilterPad abench_inputs[] = {
{
.name = "default",
.type = AVMEDIA_TYPE_AUDIO,
.filter_frame = filter_frame,
},
};
static const AVFilterPad abench_outputs[] = {
{
.name = "default",
.type = AVMEDIA_TYPE_AUDIO,
},
};
const AVFilter ff_af_abench = {
.name = "abench",
.description = NULL_IF_CONFIG_SMALL("Benchmark part of a filtergraph."),
.priv_size = sizeof(BenchContext),
.init = init,
FILTER_INPUTS(abench_inputs),
FILTER_OUTPUTS(abench_outputs),
.priv_class = &abench_class,
.flags = AVFILTER_FLAG_METADATA_ONLY,
};
#endif /* CONFIG_ABENCH_FILTER */
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