gstreamer/tools/gst-launch.c

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#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#include <string.h>
#include <stdlib.h>
#include <signal.h>
#include <unistd.h>
#include <sys/wait.h>
#include <locale.h>
#include <gst/gst.h>
/* FIXME: This is just a temporary hack. We should have a better
* check for siginfo handling. */
#ifdef SA_SIGINFO
#define USE_SIGINFO
#endif
extern volatile gboolean glib_on_error_halt;
static void fault_restore (void);
static void fault_spin (void);
static void sigint_restore (void);
static gint max_iterations = 0;
static guint64 iterations = 0;
static guint64 sum = 0;
static guint64 min = G_MAXINT64;
static guint64 max = 0;
static GstClock *s_clock;
static GstElement *pipeline;
gboolean caught_intr = FALSE;
gboolean
idle_func (gpointer data)
{
gboolean busy;
GTimeVal tfthen, tfnow;
GstClockTimeDiff diff;
if (s_clock) {
//g_print ("%" G_GINT64_FORMAT "\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 || caught_intr || (max_iterations>0 && iterations>=max_iterations)) {
gst_main_quit ();
g_print ("execution ended after %" G_GUINT64_FORMAT " iterations (sum %" G_GUINT64_FORMAT " ns, average %" G_GUINT64_FORMAT " ns, min %" G_GUINT64_FORMAT " ns, max %" G_GUINT64_FORMAT " ns)\n",
iterations, sum, sum/iterations, min, max);
}
return busy;
}
#ifndef GST_DISABLE_LOADSAVE
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;
}
#endif
#ifndef USE_SIGINFO
static void
fault_handler_sighandler (int signum)
{
fault_restore ();
switch (signum) {
case SIGSEGV:
g_print ("Caught SIGSEGV\n");
break;
case SIGQUIT:
g_print ("Caught SIGQUIT\n");
break;
default:
g_print ("signo: %d\n", signum);
break;
}
fault_spin();
}
#else
static void
fault_handler_sigaction (int signum, siginfo_t *si, void *misc)
{
fault_restore ();
switch (si->si_signo) {
case SIGSEGV:
g_print ("Caught SIGSEGV accessing address %p\n", si->si_addr);
break;
case SIGQUIT:
g_print ("Caught SIGQUIT\n");
break;
default:
g_print ("signo: %d\n", si->si_signo);
g_print ("errno: %d\n", si->si_errno);
g_print ("code: %d\n", si->si_code);
break;
}
fault_spin();
}
#endif
static void
fault_spin (void)
{
int spinning = TRUE;
glib_on_error_halt = FALSE;
g_on_error_stack_trace ("gst-launch");
wait (NULL);
/* 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",
(gint) getpid ());
while (spinning) g_usleep (1000000);
}
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));
#ifdef USE_SIGINFO
action.sa_sigaction = fault_handler_sigaction;
action.sa_flags = SA_SIGINFO;
#else
action.sa_handler = fault_handler_sighandler;
#endif
sigaction (SIGSEGV, &action, NULL);
sigaction (SIGQUIT, &action, NULL);
}
/* we only use sighandler here because the registers are not important */
static void
sigint_handler_sighandler (int signum)
{
g_print ("Caught interrupt\n");
sigint_restore();
caught_intr = TRUE;
}
static void
sigint_setup (void)
{
struct sigaction action;
memset (&action, 0, sizeof (action));
action.sa_handler = sigint_handler_sighandler;
sigaction (SIGINT, &action, NULL);
}
static void
sigint_restore (void)
{
struct sigaction action;
memset (&action, 0, sizeof (action));
action.sa_handler = SIG_DFL;
sigaction (SIGINT, &action, NULL);
}
static void
play_handler (int signum)
{
switch (signum) {
case SIGUSR1:
g_print ("Caught SIGUSR1 - Play request\n");
gst_element_set_state (pipeline, GST_STATE_PLAYING);
break;
case SIGUSR2:
g_print ("Caught SIGUSR2 - Stop request\n");
gst_element_set_state (pipeline, GST_STATE_NULL);
break;
}
}
static void
play_signal_setup(void)
{
struct sigaction action;
memset (&action, 0, sizeof (action));
action.sa_handler = play_handler;
sigaction (SIGUSR1, &action, NULL);
sigaction (SIGUSR2, &action, NULL);
}
int
main(int argc, char *argv[])
{
gint i, j;
/* options */
gboolean verbose = FALSE;
gboolean no_fault = FALSE;
gboolean trace = FALSE;
gchar *savefile = NULL;
gchar *exclude_args = NULL;
struct poptOption options[] = {
{"verbose", 'v', POPT_ARG_NONE|POPT_ARGFLAG_STRIP, &verbose, 0,
"output status information and property notifications", NULL},
{"exclude", 'X', POPT_ARG_STRING|POPT_ARGFLAG_STRIP, &exclude_args, 0,
"do not output status information of TYPE", "TYPE1,TYPE2,..."},
#ifndef GST_DISABLE_LOADSAVE
{"output", 'o', POPT_ARG_STRING|POPT_ARGFLAG_STRIP, &savefile, 0,
"save xml representation of pipeline to FILE and exit", "FILE"},
#endif
{"no-fault", 'f', POPT_ARG_NONE|POPT_ARGFLAG_STRIP, &no_fault, 0,
"Do not install a fault handler", NULL},
{"trace", 't', POPT_ARG_NONE|POPT_ARGFLAG_STRIP, &trace, 0,
"print alloc trace if enabled at compile time", NULL},
{"iterations",'i',POPT_ARG_INT|POPT_ARGFLAG_STRIP, &max_iterations, 0,
"number of times to iterate pipeline", NULL},
POPT_TABLEEND
};
gchar **argvn;
GError *error = NULL;
gint res = 0;
free (malloc (8)); /* -lefence */
setlocale(LC_ALL, "");
gst_alloc_trace_set_flags_all (GST_ALLOC_TRACE_LIVE);
gst_init_with_popt_table (&argc, &argv, options);
/* FIXpopt: strip short args, too. We do it ourselves for now */
j = 1;
for (i = 1; i < argc; i++) {
if (*(argv[i]) == '-') {
if (strlen (argv[i]) == 2) {
gchar *c = argv[i];
c++;
if (*c == 'X' || *c == 'o') {
i++;
}
}
} else {
argv[j] = argv[i];
j++;
}
}
argc = j;
if (!no_fault)
fault_setup();
sigint_setup();
play_signal_setup();
if (trace) {
if (!gst_alloc_trace_available()) {
g_warning ("trace not available (recompile with trace enabled)");
}
gst_alloc_trace_print_all ();
}
/* make a null-terminated version of argv */
argvn = g_new0 (char*, argc);
memcpy (argvn, argv+1, sizeof (char*) * (argc-1));
#ifndef GST_DISABLE_LOADSAVE
if (strstr (argv[0], "gst-xmllaunch")) {
pipeline = xmllaunch_parse_cmdline ((const gchar**)argvn);
}
else
#endif
{
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);
g_error_free (error);
} else {
fprintf(stderr, "ERROR: pipeline could not be constructed\n");
}
exit(1);
} else if (error) {
fprintf(stderr, "WARNING: erroneous pipeline: %s\n Trying to run anyway\n", error->message);
g_error_free (error);
}
if (verbose) {
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) {
if (!GST_IS_BIN (pipeline)) {
GstElement *real_pipeline = gst_element_factory_make ("pipeline", NULL);
if (real_pipeline == NULL) {
fprintf(stderr, "ERROR: The pipeline element wasn't found.\n");
exit(1);
}
gst_bin_add (GST_BIN (real_pipeline), pipeline);
pipeline = real_pipeline;
}
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_object_unref (GST_OBJECT (pipeline));
if (trace)
gst_alloc_trace_print_all ();
return res;
}