/* * 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_FILTERDEFINE_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,    },    { NULL }}; static const AVFilterPad bench_outputs[] = {    {        .name = "default",        .type = AVMEDIA_TYPE_VIDEO,    },    { NULL }}; AVFilter ff_vf_bench = {    .name          = "bench",    .description   = NULL_IF_CONFIG_SMALL("Benchmark part of a filtergraph."),    .priv_size     = sizeof(BenchContext),    .init          = init,    .inputs        = bench_inputs,    .outputs       = bench_outputs,    .priv_class    = &bench_class,};#endif /* CONFIG_BENCH_FILTER */ #if CONFIG_ABENCH_FILTERDEFINE_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,    },    { NULL }}; static const AVFilterPad abench_outputs[] = {    {        .name = "default",        .type = AVMEDIA_TYPE_AUDIO,    },    { NULL }}; AVFilter ff_af_abench = {    .name          = "abench",    .description   = NULL_IF_CONFIG_SMALL("Benchmark part of a filtergraph."),    .priv_size     = sizeof(BenchContext),    .init          = init,    .inputs        = abench_inputs,    .outputs       = abench_outputs,    .priv_class    = &abench_class,};#endif /* CONFIG_ABENCH_FILTER */