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