gstreamer/tests/benchmarks/capsnego.c

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/* GStreamer
* Copyright (C) 2010 Stefan Kost <ensonic@users.sf.net>
*
* capsnego.c: benchmark for caps negotiation
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library 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
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
/* This benchmark recursively builds a pipeline and measures the time to go
* from READY to PAUSED state.
*
* The graph size and type can be controlled with a few command line options:
*
* -d depth: is the depth of the tree
* -c children: is the number of branches on each level
* -f <flavour>: can be "audio" or "video" and is controlling the kind of
* elements that are used.
*/
#include <gst/gst.h>
#include <stdlib.h>
#include <string.h>
enum
{
FLAVOUR_AUDIO = 0,
FLAVOUR_VIDEO,
NUM_FLAVOURS
};
enum
{
ELEM_SRC = 0,
ELEM_MIX,
ELEM_PROC,
ELEM_CONV,
NUM_ELEM
};
static const gchar *factories[NUM_FLAVOURS][NUM_ELEM] = {
{"audiotestsrc", "adder", "volume", "audioconvert"},
{"videotestsrc", "videomixer", "videoscale", "videoconvert"}
};
static const gchar *sink_pads[NUM_FLAVOURS][NUM_ELEM] = {
{NULL, "sink_%u", NULL, NULL},
{NULL, "sink_%u", NULL, NULL}
};
static gboolean
create_node (GstBin * bin, GstElement * sink, const gchar * sinkpadname,
GstElement ** new_sink, gint children, gint flavour)
{
GstElement *mix, *proc, *conv;
if (children >= 1) {
mix = gst_element_factory_make (factories[flavour][ELEM_MIX], NULL);
if (!mix) {
GST_WARNING ("need element '%s'", factories[flavour][ELEM_MIX]);
return FALSE;
}
} else {
mix = gst_element_factory_make ("identity", NULL);
}
proc = gst_element_factory_make (factories[flavour][ELEM_PROC], NULL);
if (!proc) {
GST_WARNING ("need element '%s'", factories[flavour][ELEM_PROC]);
return FALSE;
}
conv = gst_element_factory_make (factories[flavour][ELEM_CONV], NULL);
if (!conv) {
GST_WARNING ("need element '%s'", factories[flavour][ELEM_CONV]);
return FALSE;
}
gst_bin_add_many (bin, mix, proc, conv, NULL);
if (!gst_element_link_pads_full (mix, "src", proc, "sink",
GST_PAD_LINK_CHECK_NOTHING)
|| !gst_element_link_pads_full (proc, "src", conv, "sink",
GST_PAD_LINK_CHECK_NOTHING)
|| !gst_element_link_pads_full (conv, "src", sink, sinkpadname,
GST_PAD_LINK_CHECK_NOTHING)) {
GST_WARNING ("can't link elements");
return FALSE;
}
*new_sink = mix;
return TRUE;
}
static gboolean
create_nodes (GstBin * bin, GstElement * sink, gint depth, gint children,
gint flavour)
{
GstElement *new_sink, *src;
gint i;
for (i = 0; i < children; i++) {
if (depth > 0) {
if (!create_node (bin, sink, sink_pads[flavour][ELEM_MIX], &new_sink,
children, flavour)) {
return FALSE;
}
if (!create_nodes (bin, new_sink, depth - 1, children, flavour)) {
return FALSE;
}
} else {
src = gst_element_factory_make (factories[flavour][ELEM_SRC], NULL);
if (!src) {
GST_WARNING ("need element '%s'", factories[flavour][ELEM_SRC]);
return FALSE;
}
gst_bin_add (bin, src);
if (!gst_element_link_pads_full (src, "src", sink,
sink_pads[flavour][ELEM_MIX], GST_PAD_LINK_CHECK_NOTHING)) {
GST_WARNING ("can't link elements");
return FALSE;
}
}
}
return TRUE;
}
static void
event_loop (GstElement * bin)
{
GstBus *bus;
GstMessage *msg = NULL;
gboolean running = TRUE;
bus = gst_element_get_bus (bin);
while (running) {
msg = gst_bus_poll (bus,
GST_MESSAGE_ASYNC_DONE | GST_MESSAGE_ERROR | GST_MESSAGE_WARNING, -1);
switch (GST_MESSAGE_TYPE (msg)) {
case GST_MESSAGE_ASYNC_DONE:
running = FALSE;
break;
case GST_MESSAGE_WARNING:{
GError *err = NULL;
gchar *dbg = NULL;
gst_message_parse_warning (msg, &err, &dbg);
GST_WARNING_OBJECT (GST_MESSAGE_SRC (msg), "%s (%s)", err->message,
(dbg ? dbg : "no details"));
g_clear_error (&err);
g_free (dbg);
break;
}
case GST_MESSAGE_ERROR:{
GError *err = NULL;
gchar *dbg = NULL;
gst_message_parse_error (msg, &err, &dbg);
GST_ERROR_OBJECT (GST_MESSAGE_SRC (msg), "%s (%s)", err->message,
(dbg ? dbg : "no details"));
g_clear_error (&err);
g_free (dbg);
running = FALSE;
break;
}
default:
break;
}
gst_message_unref (msg);
}
gst_object_unref (bus);
}
gint
main (gint argc, gchar * argv[])
{
/* default parameters */
gchar *flavour_str = g_strdup ("audio");
gint flavour = FLAVOUR_AUDIO;
gint children = 3;
gint depth = 4;
gint loops = 50;
GOptionContext *ctx;
GOptionEntry options[] = {
{"children", 'c', 0, G_OPTION_ARG_INT, &children,
"Number of children (branches on each level) (default: 3)", NULL}
,
{"depth", 'd', 0, G_OPTION_ARG_INT, &depth,
"Depth of pipeline hierarchy tree (default: 4)", NULL}
,
{"flavour", 'f', 0, G_OPTION_ARG_STRING, &flavour_str,
"Flavour (video|audio) controlling the kind of elements used "
"(default: audio)", NULL}
,
{"loops", 'l', 0, G_OPTION_ARG_INT, &loops,
"How many loops to run (default: 50)", NULL}
,
{NULL}
};
GError *err = NULL;
GstBin *bin;
GstClockTime start, end;
GstElement *sink, *new_sink;
gint i;
g_set_prgname ("capsnego");
/* check command line options */
ctx = g_option_context_new ("");
g_option_context_add_main_entries (ctx, options, NULL);
g_option_context_add_group (ctx, gst_init_get_option_group ());
if (!g_option_context_parse (ctx, &argc, &argv, &err)) {
g_print ("Error initializing: %s\n", GST_STR_NULL (err->message));
g_clear_error (&err);
g_option_context_free (ctx);
return 1;
}
g_option_context_free (ctx);
if (strcmp (flavour_str, "video") == 0)
flavour = FLAVOUR_VIDEO;
/* build pipeline */
g_print ("building %s pipeline with depth = %d and children = %d\n",
flavour_str, depth, children);
g_free (flavour_str);
start = gst_util_get_timestamp ();
bin = GST_BIN (gst_pipeline_new ("pipeline"));
sink = gst_element_factory_make ("fakesink", NULL);
gst_bin_add (bin, sink);
if (!create_node (bin, sink, "sink", &new_sink, children, flavour)) {
goto Error;
}
if (!create_nodes (bin, new_sink, depth, children, flavour)) {
goto Error;
}
end = gst_util_get_timestamp ();
/* num-threads = num-sources = pow (children, depth) */
g_print ("%" GST_TIME_FORMAT " built pipeline with %d elements\n",
GST_TIME_ARGS (end - start), GST_BIN_NUMCHILDREN (bin));
/* measure */
g_print ("starting pipeline\n");
gst_element_set_state (GST_ELEMENT (bin), GST_STATE_READY);
GST_DEBUG_BIN_TO_DOT_FILE (bin, GST_DEBUG_GRAPH_SHOW_MEDIA_TYPE, "capsnego");
start = gst_util_get_timestamp ();
for (i = 0; i < loops; ++i) {
gst_element_set_state (GST_ELEMENT (bin), GST_STATE_PAUSED);
event_loop (GST_ELEMENT (bin));
gst_element_set_state (GST_ELEMENT (bin), GST_STATE_READY);
}
end = gst_util_get_timestamp ();
g_print ("%" GST_TIME_FORMAT " reached PAUSED state (%d loop iterations)\n",
GST_TIME_ARGS (end - start), loops);
/* clean up */
Error:
gst_element_set_state (GST_ELEMENT (bin), GST_STATE_NULL);
gst_object_unref (bin);
return 0;
}