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DEFINITIONS
This source file includes following definitions.
- create_node
- create_nodes
- event_loop
- main
/* 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., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
/* this benchmark recursively builds a pipeline and meassures the time to go
* from ready to paused.
* The graph size and type can be controlled with a few commandline args:
* -d depth: is the depth of the tree
* -c children: is the number of branches on each level
* -f <flavour>: can be a=udio/v=ideo and is conttrolling 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,
SINKPAD_MIX,
ELEM_PROC,
ELEM_CONV,
NUM_ELEM
};
static const gchar *factories[NUM_FLAVOURS][NUM_ELEM] = {
{"audiotestsrc", "adder", "sink%d", "volume", "audioconvert"},
{"videotestsrc", "videomixer", "sink_%d", "videoscale", "ffmpegcolorspace"}
};
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, factories[flavour][SINKPAD_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,
factories[flavour][SINKPAD_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_STATE_CHANGED, -1);
if (GST_MESSAGE_SRC (msg) == (GstObject *) bin) {
GstState old_state, new_state;
gst_message_parse_state_changed (msg, &old_state, &new_state, NULL);
if (old_state == GST_STATE_READY && new_state == GST_STATE_PAUSED) {
running = FALSE;
}
}
gst_message_unref (msg);
}
}
gint
main (gint argc, gchar * argv[])
{
GstBin *bin;
GstClockTime start, end;
GstElement *sink, *new_sink;
/* default parameters */
gint depth = 4;
gint children = 3;
gint flavour = FLAVOUR_AUDIO;
const gchar *flavour_str = "audio";
gst_init (&argc, &argv);
/* check command line options */
if (argc) {
gint arg;
for (arg = 0; arg < argc; arg++) {
if (!strcmp (argv[arg], "-d")) {
arg++;
if (arg < argc)
depth = atoi (argv[arg]);
} else if (!strcmp (argv[arg], "-c")) {
arg++;
if (arg < argc)
children = atoi (argv[arg]);
} else if (!strcmp (argv[arg], "-f")) {
arg++;
if (arg < argc) {
flavour_str = argv[arg];
switch (*flavour_str) {
case 'a':
flavour = FLAVOUR_AUDIO;
break;
case 'v':
flavour = FLAVOUR_VIDEO;
break;
default:
break;
}
}
}
}
}
/* build pipeline */
g_print ("building %s pipeline with depth = %d and children = %d\n",
flavour_str, depth, children);
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 ();
g_print ("%" GST_TIME_FORMAT " built pipeline with %d elements\n",
GST_TIME_ARGS (end - start), GST_BIN_NUMCHILDREN (bin));
/* meassure */
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 ();
gst_element_set_state (GST_ELEMENT (bin), GST_STATE_PAUSED);
event_loop (GST_ELEMENT (bin));
end = gst_util_get_timestamp ();
g_print ("%" GST_TIME_FORMAT " reached paused\n",
GST_TIME_ARGS (end - start));
/* clean up */
Error:
gst_element_set_state (GST_ELEMENT (bin), GST_STATE_NULL);
gst_object_unref (bin);
return 0;
}