gstreamer/tools/gst-launch.c

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#include <string.h>
#include <stdlib.h>
#include <signal.h>
#include <sys/wait.h>
#include <gst/gst.h>
static guint64 iterations = 0;
static guint64 sum = 0;
static guint64 min = G_MAXINT64;
static guint64 max = 0;
static GstClock *s_clock;
gboolean
idle_func (gpointer data)
{
gboolean busy;
GTimeVal tfthen, tfnow;
GstClockTimeDiff diff;
if (s_clock) {
//g_print ("%lld\n", gst_clock_get_time (s_clock));
}
g_get_current_time (&tfthen);
busy = gst_bin_iterate (GST_BIN (data));
iterations++;
g_get_current_time (&tfnow);
diff = GST_TIMEVAL_TO_TIME (tfnow) -
GST_TIMEVAL_TO_TIME (tfthen);
sum += diff;
min = MIN (min, diff);
max = MAX (max, diff);
if (!busy) {
gst_main_quit ();
g_print ("execution ended after %llu iterations (sum %llu ns, average %llu ns, min %llu ns, max %llu ns)\n",
iterations, sum, sum/iterations, min, max);
}
return busy;
}
static GstElement*
xmllaunch_parse_cmdline (const gchar **argv)
{
GstElement *pipeline = NULL, *e;
GstXML *xml;
gboolean err;
const gchar *arg;
gchar *element, *property, *value;
GList *l;
gint i = 0;
if (!(arg = argv[0])) {
g_print ("usage: gst-xmllaunch <file.xml> [ element.property=value ... ]\n");
exit (1);
}
xml = gst_xml_new ();
err = gst_xml_parse_file(xml, arg, NULL);
if (err != TRUE) {
fprintf (stderr, "ERROR: parse of xml file '%s' failed\n", arg);
exit (1);
}
l = gst_xml_get_topelements (xml);
if (!l) {
fprintf (stderr, "ERROR: no toplevel pipeline element in file '%s'\n", arg);
exit (1);
}
if (l->next)
g_warning ("only one toplevel element is supported at this time");
pipeline = GST_ELEMENT (l->data);
while ((arg = argv[++i])) {
element = g_strdup (arg);
property = strchr (element, '.');
value = strchr (element, '=');
if (!(element < property && property < value)) {
fprintf (stderr, "ERROR: could not parse command line argument %d: %s", i, element);
g_free (element);
exit (1);
}
*property++ = '\0';
*value++ = '\0';
e = gst_bin_get_by_name (GST_BIN (pipeline), element);
if (!e) {
g_warning ("element named '%s' not found", element);
} else {
gst_util_set_object_arg (G_OBJECT (e), property, value);
}
g_free (element);
}
if (!l)
return NULL;
else
return l->data;
}
extern volatile gboolean glib_on_error_halt;
static void fault_restore(void);
static void
fault_handler (int signum, siginfo_t *si, void *misc)
{
int spinning = TRUE;
fault_restore ();
if (si->si_signo == SIGSEGV) {
g_print ("Caught SIGSEGV accessing address %p\n", si->si_addr);
}
else if (si->si_signo == SIGQUIT){
g_print ("Caught SIGQUIT\n");
}
else {
g_print ("signo: %d\n", si->si_signo);
g_print ("errno: %d\n", si->si_errno);
g_print ("code: %d\n", si->si_code);
}
glib_on_error_halt = FALSE;
g_on_error_stack_trace ("gst-launch");
wait (NULL);
#if 1
/* FIXME how do we know if we were run by libtool? */
g_print ("Spinning. Please run 'gdb gst-launch %d' to continue debugging, "
"Ctrl-C to quit, or Ctrl-\\ to dump core.\n",
getpid ());
while (spinning) usleep (1000000);
#else
/* This spawns a gdb and attaches it to gst-launch. */
{
char str[40];
sprintf (str, "gdb -quiet gst-launch %d", getpid ());
system (str);
}
_exit(0);
#endif
}
static void
fault_restore (void)
{
struct sigaction action;
memset (&action, 0, sizeof (action));
action.sa_handler = SIG_DFL;
sigaction(SIGSEGV, &action, NULL);
sigaction(SIGQUIT, &action, NULL);
}
static void
fault_setup (void)
{
struct sigaction action;
memset (&action, 0, sizeof (action));
action.sa_sigaction = fault_handler;
action.sa_flags = SA_SIGINFO;
sigaction (SIGSEGV, &action, NULL);
sigaction (SIGQUIT, &action, NULL);
}
int
main(int argc, char *argv[])
{
/* options */
gboolean silent = FALSE;
gboolean no_fault = FALSE;
gchar *savefile = NULL;
gchar *exclude_args = NULL;
struct poptOption options[] = {
{"silent", 's', POPT_ARG_NONE|POPT_ARGFLAG_STRIP, &silent, 0,
"do not output status information", NULL},
{"exclude", 'X', POPT_ARG_STRING|POPT_ARGFLAG_STRIP, &exclude_args, 0,
"do not output status information of TYPE", "TYPE1,TYPE2,..."},
{"output", 'o', POPT_ARG_STRING|POPT_ARGFLAG_STRIP, &savefile, 0,
"save xml representation of pipeline to FILE and exit", "FILE"},
{"no_fault", 'f', POPT_ARG_NONE|POPT_ARGFLAG_STRIP, &no_fault, 0,
"Do not install a fault handler", NULL},
POPT_TABLEEND
};
GstElement *pipeline;
gchar **argvn;
GError *error = NULL;
gint res = 0;
free (malloc (8)); /* -lefence */
gst_init_with_popt_table (&argc, &argv, options);
if (!no_fault)
fault_setup();
/* make a null-terminated version of argv */
argvn = g_new0 (char*, argc);
memcpy (argvn, argv+1, sizeof (char*) * (argc-1));
if (strstr (argv[0], "gst-xmllaunch")) {
pipeline = xmllaunch_parse_cmdline ((const gchar**)argvn);
} else {
pipeline = (GstElement*) gst_parse_launchv ((const gchar**)argvn, &error);
}
g_free (argvn);
if (!pipeline) {
if (error)
fprintf(stderr, "ERROR: pipeline could not be constructed: %s\n", error->message);
else
fprintf(stderr, "ERROR: pipeline could not be constructed\n");
exit(1);
}
if (!silent)
{
gchar **exclude_list = exclude_args ? g_strsplit (exclude_args, ",", 0) : NULL;
g_signal_connect (pipeline, "deep_notify", G_CALLBACK (gst_element_default_deep_notify), exclude_list);
}
g_signal_connect (pipeline, "error", G_CALLBACK (gst_element_default_error), NULL);
#ifndef GST_DISABLE_LOADSAVE
if (savefile) {
gst_xml_write_file (GST_ELEMENT (pipeline), fopen (savefile, "w"));
}
#endif
if (!savefile) {
gst_buffer_print_stats();
gst_event_print_stats();
fprintf(stderr,"RUNNING pipeline\n");
if (gst_element_set_state (pipeline, GST_STATE_PLAYING) == GST_STATE_FAILURE) {
fprintf(stderr,"pipeline doesn't want to play\n");
res = -1;
goto end;
}
s_clock = gst_bin_get_clock (GST_BIN (pipeline));
if (!GST_FLAG_IS_SET (GST_OBJECT (pipeline), GST_BIN_SELF_SCHEDULABLE)) {
g_idle_add (idle_func, pipeline);
gst_main ();
} else {
g_print ("waiting for the state change...\n");
gst_element_wait_state_change (pipeline);
g_print ("got the state change...\n");
}
gst_element_set_state (pipeline, GST_STATE_NULL);
}
end:
gst_buffer_print_stats();
gst_event_print_stats();
gst_object_unref (GST_OBJECT (pipeline));
return res;
}