FFmpeg
f_bench.c
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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 
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 
52 {
53  BenchContext *s = ctx->priv;
54  s->min = INT64_MAX;
55  s->max = INT64_MIN;
56  return 0;
57 }
58 
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) {
71  } else if (s->action == ACTION_STOP) {
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  }
84  }
85 
86  return ff_filter_frame(outlink, in);
87 }
88 
89 #if CONFIG_BENCH_FILTER
92 
93 static const AVFilterPad bench_inputs[] = {
94  {
95  .name = "default",
96  .type = AVMEDIA_TYPE_VIDEO,
97  .filter_frame = filter_frame,
98  },
99 };
100 
101 static const AVFilterPad bench_outputs[] = {
102  {
103  .name = "default",
104  .type = AVMEDIA_TYPE_VIDEO,
105  },
106 };
107 
108 const AVFilter ff_vf_bench = {
109  .name = "bench",
110  .description = NULL_IF_CONFIG_SMALL("Benchmark part of a filtergraph."),
111  .priv_size = sizeof(BenchContext),
112  .init = init,
113  FILTER_INPUTS(bench_inputs),
114  FILTER_OUTPUTS(bench_outputs),
115  .priv_class = &bench_class,
117 };
118 #endif /* CONFIG_BENCH_FILTER */
119 
120 #if CONFIG_ABENCH_FILTER
122 AVFILTER_DEFINE_CLASS(abench);
123 
124 static const AVFilterPad abench_inputs[] = {
125  {
126  .name = "default",
127  .type = AVMEDIA_TYPE_AUDIO,
128  .filter_frame = filter_frame,
129  },
130 };
131 
132 static const AVFilterPad abench_outputs[] = {
133  {
134  .name = "default",
135  .type = AVMEDIA_TYPE_AUDIO,
136  },
137 };
138 
139 const AVFilter ff_af_abench = {
140  .name = "abench",
141  .description = NULL_IF_CONFIG_SMALL("Benchmark part of a filtergraph."),
142  .priv_size = sizeof(BenchContext),
143  .init = init,
144  FILTER_INPUTS(abench_inputs),
145  FILTER_OUTPUTS(abench_outputs),
146  .priv_class = &abench_class,
148 };
149 #endif /* CONFIG_ABENCH_FILTER */
BenchContext::action
int action
Definition: f_bench.c:33
opt.h
AV_OPT_FLAG_VIDEO_PARAM
#define AV_OPT_FLAG_VIDEO_PARAM
Definition: opt.h:280
ff_filter_frame
int ff_filter_frame(AVFilterLink *link, AVFrame *frame)
Send a frame of data to the next filter.
Definition: avfilter.c:1018
inlink
The exact code depends on how similar the blocks are and how related they are to the and needs to apply these operations to the correct inlink or outlink if there are several Macros are available to factor that when no extra processing is inlink
Definition: filter_design.txt:212
AVFrame
This structure describes decoded (raw) audio or video data.
Definition: frame.h:310
BenchContext::min
int64_t min
Definition: f_bench.c:34
NB_ACTION
@ NB_ACTION
Definition: f_bench.c:28
FFMAX
#define FFMAX(a, b)
Definition: macros.h:47
AVFilter::name
const char * name
Filter name.
Definition: avfilter.h:169
AV_OPT_FLAG_FILTERING_PARAM
#define AV_OPT_FLAG_FILTERING_PARAM
a generic parameter which can be set by the user for filtering
Definition: opt.h:293
formats.h
BenchContext::max
int64_t max
Definition: f_bench.c:34
BenchContext::sum
int64_t sum
Definition: f_bench.c:35
START_TIME_KEY
#define START_TIME_KEY
Definition: f_bench.c:48
AVFilterPad
A filter pad used for either input or output.
Definition: internal.h:50
av_cold
#define av_cold
Definition: attributes.h:90
av_dict_get
AVDictionaryEntry * av_dict_get(const AVDictionary *m, const char *key, const AVDictionaryEntry *prev, int flags)
Get a dictionary entry with matching key.
Definition: dict.c:40
T2F
#define T2F(v)
Definition: f_bench.c:49
s
#define s(width, name)
Definition: cbs_vp9.c:257
AVMEDIA_TYPE_AUDIO
@ AVMEDIA_TYPE_AUDIO
Definition: avutil.h:202
DEFINE_OPTIONS
#define DEFINE_OPTIONS(filt_name, FLAGS)
Definition: f_bench.c:40
BenchContext
Definition: f_bench.c:31
ctx
AVFormatContext * ctx
Definition: movenc.c:48
FILTER_INPUTS
#define FILTER_INPUTS(array)
Definition: internal.h:191
AV_OPT_FLAG_AUDIO_PARAM
#define AV_OPT_FLAG_AUDIO_PARAM
Definition: opt.h:279
AVClass
Describe the class of an AVClass context structure.
Definition: log.h:66
NULL
#define NULL
Definition: coverity.c:32
ACTION_START
@ ACTION_START
Definition: f_bench.c:26
ff_vf_bench
const AVFilter ff_vf_bench
BenchAction
BenchAction
Definition: f_bench.c:25
time.h
ff_af_abench
const AVFilter ff_af_abench
NULL_IF_CONFIG_SMALL
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification.
Definition: internal.h:117
AV_LOG_INFO
#define AV_LOG_INFO
Standard information.
Definition: log.h:191
internal.h
AVFILTER_DEFINE_CLASS
#define AVFILTER_DEFINE_CLASS(fname)
Definition: internal.h:326
BenchContext::n
int n
Definition: f_bench.c:36
FFMIN
#define FFMIN(a, b)
Definition: macros.h:49
init
static av_cold int init(AVFilterContext *ctx)
Definition: f_bench.c:51
AVFilterPad::name
const char * name
Pad name.
Definition: internal.h:56
AVFilter
Filter definition.
Definition: avfilter.h:165
avfilter.h
AVFrame::metadata
AVDictionary * metadata
metadata.
Definition: frame.h:601
AVFILTER_FLAG_METADATA_ONLY
#define AVFILTER_FLAG_METADATA_ONLY
The filter is a "metadata" filter - it does not modify the frame data in any way.
Definition: avfilter.h:137
filter_frame
static int filter_frame(AVFilterLink *inlink, AVFrame *in)
Definition: f_bench.c:59
AVFilterContext
An instance of a filter.
Definition: avfilter.h:402
av_gettime
int64_t av_gettime(void)
Get the current time in microseconds.
Definition: time.c:39
av_dict_set_int
int av_dict_set_int(AVDictionary **pm, const char *key, int64_t value, int flags)
Convenience wrapper for av_dict_set that converts the value to a string and stores it.
Definition: dict.c:147
AVMEDIA_TYPE_VIDEO
@ AVMEDIA_TYPE_VIDEO
Definition: avutil.h:201
diff
static av_always_inline int diff(const uint32_t a, const uint32_t b)
Definition: vf_palettegen.c:139
AVDictionaryEntry
Definition: dict.h:79
FILTER_OUTPUTS
#define FILTER_OUTPUTS(array)
Definition: internal.h:192
av_dict_set
int av_dict_set(AVDictionary **pm, const char *key, const char *value, int flags)
Set the given entry in *pm, overwriting an existing entry.
Definition: dict.c:70
av_log
#define av_log(a,...)
Definition: tableprint_vlc.h:28
ACTION_STOP
@ ACTION_STOP
Definition: f_bench.c:27
AVDictionaryEntry::value
char * value
Definition: dict.h:81