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gstreamer/tools/gst-launch.c
Tim-Philipp Müller ca320242f3 tools: call g_set_prgname() before doing the option parsing 
g_setprgname is implicitly called by g_option_context_new() with a check
to see if it's been set already, so set it before g_option_context_new()

Move version printing back until after the options have been parsed,
otherwise it won't work, since it evaluates a flag set by the
option parser.
2010-02-16 11:33:19 +00:00

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/* GStreamer
* Copyright (C) 1999,2000 Erik Walthinsen <omega@cse.ogi.edu>
* 2000 Wim Taymans <wtay@chello.be>
* 2004 Thomas Vander Stichele <thomas@apestaart.org>
*
* gst-launch.c: tool to launch GStreamer pipelines from the command line
*
* 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.
*/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
/* FIXME: hack alert */
#ifdef HAVE_WIN32
#define DISABLE_FAULT_HANDLER
#endif
#include <stdio.h>
#include <string.h>
#include <signal.h>
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
#ifndef DISABLE_FAULT_HANDLER
#include <sys/wait.h>
#endif
#include <locale.h> /* for LC_ALL */
#include "tools.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;
#ifndef DISABLE_FAULT_HANDLER
static void fault_restore (void);
static void fault_spin (void);
static void sigint_restore (void);
static gboolean caught_intr = FALSE;
#endif
/* event_loop return codes */
typedef enum _EventLoopResult
{
ELR_NO_ERROR = 0,
ELR_ERROR,
ELR_INTERRUPT
} EventLoopResult;
static GstElement *pipeline;
static EventLoopResult caught_error = ELR_NO_ERROR;
static gboolean quiet = FALSE;
static gboolean tags = FALSE;
static gboolean messages = FALSE;
static gboolean is_live = FALSE;
static gboolean waiting_eos = FALSE;
/* convenience macro so we don't have to litter the code with if(!quiet) */
#define PRINT if(!quiet)g_print
#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 ();
/* FIXME guchar from gstxml.c */
err = gst_xml_parse_file (xml, (guchar *) arg, NULL);
if (err != TRUE) {
g_printerr (_("ERROR: parse of xml file '%s' failed.\n"), arg);
exit (1);
}
l = gst_xml_get_topelements (xml);
if (!l) {
g_printerr (_("ERROR: no toplevel pipeline element in file '%s'.\n"), arg);
exit (1);
}
if (l->next) {
g_printerr ("%s",
_("WARNING: only one toplevel element is supported at this time.\n"));
}
pipeline = GST_ELEMENT (l->data);
while ((arg = argv[++i])) {
element = g_strdup (arg);
property = strchr (element, '.');
value = strchr (element, '=');
if (!(element < property && property < value)) {
g_printerr (_("ERROR: could not parse command line argument %d: %s.\n"),
i, element);
g_free (element);
exit (1);
}
*property++ = '\0';
*value++ = '\0';
e = gst_bin_get_by_name (GST_BIN (pipeline), element);
if (!e) {
g_printerr (_("WARNING: element named '%s' not found.\n"), element);
} else {
gst_util_set_object_arg (G_OBJECT (e), property, value);
}
g_free (element);
}
if (!l)
return NULL;
gst_object_ref (pipeline);
gst_object_unref (xml);
return pipeline;
}
#endif
#ifndef DISABLE_FAULT_HANDLER
#ifndef USE_SIGINFO
static void
fault_handler_sighandler (int signum)
{
fault_restore ();
/* printf is used instead of g_print(), since it's less likely to
* deadlock */
switch (signum) {
case SIGSEGV:
printf ("Caught SIGSEGV\n");
break;
case SIGQUIT:
printf ("Caught SIGQUIT\n");
break;
default:
printf ("signo: %d\n", signum);
break;
}
fault_spin ();
}
#else /* USE_SIGINFO */
static void
fault_handler_sigaction (int signum, siginfo_t * si, void *misc)
{
fault_restore ();
/* printf is used instead of g_print(), since it's less likely to
* deadlock */
switch (si->si_signo) {
case SIGSEGV:
printf ("Caught SIGSEGV accessing address %p\n", si->si_addr);
break;
case SIGQUIT:
printf ("Caught SIGQUIT\n");
break;
default:
printf ("signo: %d\n", si->si_signo);
printf ("errno: %d\n", si->si_errno);
printf ("code: %d\n", si->si_code);
break;
}
fault_spin ();
}
#endif /* USE_SIGINFO */
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? */
printf ("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);
}
#endif /* DISABLE_FAULT_HANDLER */
static void
print_tag (const GstTagList * list, const gchar * tag, gpointer unused)
{
gint i, count;
count = gst_tag_list_get_tag_size (list, tag);
for (i = 0; i < count; i++) {
gchar *str;
if (gst_tag_get_type (tag) == G_TYPE_STRING) {
if (!gst_tag_list_get_string_index (list, tag, i, &str))
g_assert_not_reached ();
} else if (gst_tag_get_type (tag) == GST_TYPE_BUFFER) {
GstBuffer *img;
img = gst_value_get_buffer (gst_tag_list_get_value_index (list, tag, i));
if (img) {
gchar *caps_str;
caps_str = GST_BUFFER_CAPS (img) ?
gst_caps_to_string (GST_BUFFER_CAPS (img)) : g_strdup ("unknown");
str = g_strdup_printf ("buffer of %u bytes, type: %s",
GST_BUFFER_SIZE (img), caps_str);
g_free (caps_str);
} else {
str = g_strdup ("NULL buffer");
}
} else {
str =
g_strdup_value_contents (gst_tag_list_get_value_index (list, tag, i));
}
if (i == 0) {
g_print ("%16s: %s\n", gst_tag_get_nick (tag), str);
} else {
g_print ("%16s: %s\n", "", str);
}
g_free (str);
}
}
#ifndef DISABLE_FAULT_HANDLER
/* we only use sighandler here because the registers are not important */
static void
sigint_handler_sighandler (int signum)
{
g_print ("Caught interrupt -- ");
/* If we were waiting for an EOS, we still want to catch
* the next signal to shutdown properly (and the following one
* will quit the program). */
if (waiting_eos) {
waiting_eos = FALSE;
} else {
sigint_restore ();
}
/* we set a flag that is checked by the mainloop, we cannot do much in the
* interrupt handler (no mutex or other blocking stuff) */
caught_intr = TRUE;
}
/* is called every 250 milliseconds (4 times a second), the interrupt handler
* will set a flag for us. We react to this by posting a message. */
static gboolean
check_intr (GstElement * pipeline)
{
if (!caught_intr) {
return TRUE;
} else {
caught_intr = FALSE;
g_print ("handling interrupt.\n");
/* post an application specific message */
gst_element_post_message (GST_ELEMENT (pipeline),
gst_message_new_application (GST_OBJECT (pipeline),
gst_structure_new ("GstLaunchInterrupt",
"message", G_TYPE_STRING, "Pipeline interrupted", NULL)));
/* remove timeout handler */
return FALSE;
}
}
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);
}
#endif /* DISABLE_FAULT_HANDLER */
/* returns ELR_ERROR if there was an error
* or ELR_INTERRUPT if we caught a keyboard interrupt
* or ELR_NO_ERROR otherwise. */
static EventLoopResult
event_loop (GstElement * pipeline, gboolean blocking, GstState target_state)
{
#ifndef DISABLE_FAULT_HANDLER
gulong timeout_id;
#endif
GstBus *bus;
GstMessage *message = NULL;
EventLoopResult res = ELR_NO_ERROR;
gboolean buffering = FALSE;
bus = gst_element_get_bus (GST_ELEMENT (pipeline));
#ifndef DISABLE_FAULT_HANDLER
timeout_id = g_timeout_add (250, (GSourceFunc) check_intr, pipeline);
#endif
while (TRUE) {
message = gst_bus_poll (bus, GST_MESSAGE_ANY, blocking ? -1 : 0);
/* if the poll timed out, only when !blocking */
if (message == NULL)
goto exit;
/* check if we need to dump messages to the console */
if (messages) {
GstObject *src_obj;
const GstStructure *s;
guint32 seqnum;
seqnum = gst_message_get_seqnum (message);
s = gst_message_get_structure (message);
src_obj = GST_MESSAGE_SRC (message);
if (GST_IS_ELEMENT (src_obj)) {
g_print (_("Got message #%u from element \"%s\" (%s): "),
(guint) seqnum, GST_ELEMENT_NAME (src_obj),
GST_MESSAGE_TYPE_NAME (message));
} else if (GST_IS_PAD (src_obj)) {
g_print (_("Got message #%u from pad \"%s:%s\" (%s): "),
(guint) seqnum, GST_DEBUG_PAD_NAME (src_obj),
GST_MESSAGE_TYPE_NAME (message));
} else if (GST_IS_OBJECT (src_obj)) {
g_print (_("Got message #%u from object \"%s\" (%s): "),
(guint) seqnum, GST_OBJECT_NAME (src_obj),
GST_MESSAGE_TYPE_NAME (message));
} else {
g_print (_("Got message #%u (%s): "), (guint) seqnum,
GST_MESSAGE_TYPE_NAME (message));
}
if (s) {
gchar *sstr;
sstr = gst_structure_to_string (s);
g_print ("%s\n", sstr);
g_free (sstr);
} else {
g_print ("no message details\n");
}
}
switch (GST_MESSAGE_TYPE (message)) {
case GST_MESSAGE_NEW_CLOCK:
{
GstClock *clock;
gst_message_parse_new_clock (message, &clock);
g_print ("New clock: %s\n", (clock ? GST_OBJECT_NAME (clock) : "NULL"));
break;
}
case GST_MESSAGE_CLOCK_LOST:
#if 0
/* disabled for now as it caused problems with rtspsrc. We need to fix
* rtspsrc first, then release -good before we can reenable this again
*/
g_print ("Clock lost, selecting a new one\n");
gst_element_set_state (pipeline, GST_STATE_PAUSED);
gst_element_set_state (pipeline, GST_STATE_PLAYING);
#endif
break;
case GST_MESSAGE_EOS:{
waiting_eos = FALSE;
g_print (_("Got EOS from element \"%s\".\n"),
GST_MESSAGE_SRC_NAME (message));
goto exit;
}
case GST_MESSAGE_TAG:
if (tags) {
GstTagList *tags;
if (GST_IS_ELEMENT (GST_MESSAGE_SRC (message))) {
g_print (_("FOUND TAG : found by element \"%s\".\n"),
GST_MESSAGE_SRC_NAME (message));
} else if (GST_IS_PAD (GST_MESSAGE_SRC (message))) {
g_print (_("FOUND TAG : found by pad \"%s:%s\".\n"),
GST_DEBUG_PAD_NAME (GST_MESSAGE_SRC (message)));
} else if (GST_IS_OBJECT (GST_MESSAGE_SRC (message))) {
g_print (_("FOUND TAG : found by object \"%s\".\n"),
GST_MESSAGE_SRC_NAME (message));
} else {
g_print (_("FOUND TAG\n"));
}
gst_message_parse_tag (message, &tags);
gst_tag_list_foreach (tags, print_tag, NULL);
gst_tag_list_free (tags);
}
break;
case GST_MESSAGE_INFO:{
GError *gerror;
gchar *debug;
gchar *name = gst_object_get_path_string (GST_MESSAGE_SRC (message));
gst_message_parse_info (message, &gerror, &debug);
if (debug) {
g_print (_("INFO:\n%s\n"), debug);
}
g_error_free (gerror);
g_free (debug);
g_free (name);
break;
}
case GST_MESSAGE_WARNING:{
GError *gerror;
gchar *debug;
gchar *name = gst_object_get_path_string (GST_MESSAGE_SRC (message));
/* dump graph on warning */
GST_DEBUG_BIN_TO_DOT_FILE_WITH_TS (GST_BIN (pipeline),
GST_DEBUG_GRAPH_SHOW_ALL, "gst-launch.warning");
gst_message_parse_warning (message, &gerror, &debug);
g_print (_("WARNING: from element %s: %s\n"), name, gerror->message);
if (debug) {
g_print (_("Additional debug info:\n%s\n"), debug);
}
g_error_free (gerror);
g_free (debug);
g_free (name);
break;
}
case GST_MESSAGE_ERROR:{
GError *gerror;
gchar *debug;
/* dump graph on error */
GST_DEBUG_BIN_TO_DOT_FILE_WITH_TS (GST_BIN (pipeline),
GST_DEBUG_GRAPH_SHOW_ALL, "gst-launch.error");
gst_message_parse_error (message, &gerror, &debug);
gst_object_default_error (GST_MESSAGE_SRC (message), gerror, debug);
g_error_free (gerror);
g_free (debug);
/* we have an error */
res = ELR_ERROR;
goto exit;
}
case GST_MESSAGE_STATE_CHANGED:{
GstState old, new, pending;
gst_message_parse_state_changed (message, &old, &new, &pending);
/* we only care about pipeline state change messages */
if (GST_MESSAGE_SRC (message) != GST_OBJECT_CAST (pipeline))
break;
/* dump graph for pipeline state changes */
{
gchar *dump_name = g_strdup_printf ("gst-launch.%s_%s",
gst_element_state_get_name (old),
gst_element_state_get_name (new));
GST_DEBUG_BIN_TO_DOT_FILE_WITH_TS (GST_BIN (pipeline),
GST_DEBUG_GRAPH_SHOW_ALL, dump_name);
g_free (dump_name);
}
/* ignore when we are buffering since then we mess with the states
* ourselves. */
if (buffering) {
PRINT (_("Prerolled, waiting for buffering to finish...\n"));
break;
}
/* if we reached the final target state, exit */
if (target_state == GST_STATE_PAUSED && new == target_state)
goto exit;
/* else not an interesting message */
break;
}
case GST_MESSAGE_BUFFERING:{
gint percent;
gst_message_parse_buffering (message, &percent);
PRINT ("%s %d%% \r", _("buffering..."), percent);
/* no state management needed for live pipelines */
if (is_live)
break;
if (percent == 100) {
/* a 100% message means buffering is done */
buffering = FALSE;
/* if the desired state is playing, go back */
if (target_state == GST_STATE_PLAYING) {
PRINT (_("Done buffering, setting pipeline to PLAYING ...\n"));
gst_element_set_state (pipeline, GST_STATE_PLAYING);
} else
goto exit;
} else {
/* buffering busy */
if (buffering == FALSE && target_state == GST_STATE_PLAYING) {
/* we were not buffering but PLAYING, PAUSE the pipeline. */
PRINT (_("Buffering, setting pipeline to PAUSED ...\n"));
gst_element_set_state (pipeline, GST_STATE_PAUSED);
}
buffering = TRUE;
}
break;
}
case GST_MESSAGE_LATENCY:
{
PRINT (_("Redistribute latency...\n"));
gst_bin_recalculate_latency (GST_BIN (pipeline));
break;
}
case GST_MESSAGE_REQUEST_STATE:
{
GstState state;
gchar *name = gst_object_get_path_string (GST_MESSAGE_SRC (message));
gst_message_parse_request_state (message, &state);
PRINT (_("Setting state to %s as requested by %s...\n"),
gst_element_state_get_name (state), name);
gst_element_set_state (pipeline, state);
g_free (name);
break;
}
case GST_MESSAGE_APPLICATION:{
const GstStructure *s;
s = gst_message_get_structure (message);
if (gst_structure_has_name (s, "GstLaunchInterrupt")) {
/* this application message is posted when we caught an interrupt and
* we need to stop the pipeline. */
PRINT (_("Interrupt: Stopping pipeline ...\n"));
res = ELR_INTERRUPT;
goto exit;
}
}
default:
/* just be quiet by default */
break;
}
if (message)
gst_message_unref (message);
}
g_assert_not_reached ();
exit:
{
if (message)
gst_message_unref (message);
gst_object_unref (bus);
#ifndef DISABLE_FAULT_HANDLER
g_source_remove (timeout_id);
#endif
return res;
}
}
int
main (int argc, char *argv[])
{
/* options */
gboolean verbose = FALSE;
gboolean no_fault = FALSE;
gboolean trace = FALSE;
gboolean eos_on_shutdown = FALSE;
gchar *savefile = NULL;
gchar *exclude_args = NULL;
#ifndef GST_DISABLE_OPTION_PARSING
GOptionEntry options[] = {
{"tags", 't', 0, G_OPTION_ARG_NONE, &tags,
N_("Output tags (also known as metadata)"), NULL},
{"verbose", 'v', 0, G_OPTION_ARG_NONE, &verbose,
N_("Output status information and property notifications"), NULL},
{"quiet", 'q', 0, G_OPTION_ARG_NONE, &quiet,
N_("Do not print any progress information"), NULL},
{"messages", 'm', 0, G_OPTION_ARG_NONE, &messages,
N_("Output messages"), NULL},
{"exclude", 'X', 0, G_OPTION_ARG_NONE, &exclude_args,
N_("Do not output status information of TYPE"), N_("TYPE1,TYPE2,...")},
#ifndef GST_DISABLE_LOADSAVE
{"output", 'o', 0, G_OPTION_ARG_STRING, &savefile,
N_("Save xml representation of pipeline to FILE and exit"), N_("FILE")},
#endif
{"no-fault", 'f', 0, G_OPTION_ARG_NONE, &no_fault,
N_("Do not install a fault handler"), NULL},
{"trace", 'T', 0, G_OPTION_ARG_NONE, &trace,
N_("Print alloc trace (if enabled at compile time)"), NULL},
{"eos-on-shutdown", 'e', 0, G_OPTION_ARG_NONE, &eos_on_shutdown,
N_("Force EOS on sources before shutting the pipeline down"), NULL},
GST_TOOLS_GOPTION_VERSION,
{NULL}
};
GOptionContext *ctx;
GError *err = NULL;
#endif
gchar **argvn;
GError *error = NULL;
gint res = 0;
free (malloc (8)); /* -lefence */
#ifdef ENABLE_NLS
bindtextdomain (GETTEXT_PACKAGE, LOCALEDIR);
bind_textdomain_codeset (GETTEXT_PACKAGE, "UTF-8");
textdomain (GETTEXT_PACKAGE);
#endif
g_thread_init (NULL);
gst_tools_set_prgname ("gst-launch");
#ifndef GST_DISABLE_OPTION_PARSING
ctx = g_option_context_new ("PIPELINE-DESCRIPTION");
g_option_context_add_main_entries (ctx, options, GETTEXT_PACKAGE);
g_option_context_add_group (ctx, gst_init_get_option_group ());
if (!g_option_context_parse (ctx, &argc, &argv, &err)) {
if (err)
g_print ("Error initializing: %s\n", GST_STR_NULL (err->message));
else
g_print ("Error initializing: Unknown error!\n");
exit (1);
}
g_option_context_free (ctx);
#else
gst_init (&argc, &argv);
#endif
gst_tools_print_version ("gst-launch");
#ifndef DISABLE_FAULT_HANDLER
if (!no_fault)
fault_setup ();
sigint_setup ();
play_signal_setup ();
#endif
if (trace) {
if (!gst_alloc_trace_available ()) {
g_warning ("Trace not available (recompile with trace enabled).");
}
gst_alloc_trace_set_flags_all (GST_ALLOC_TRACE_LIVE |
GST_ALLOC_TRACE_MEM_LIVE);
gst_alloc_trace_print_live ();
}
/* 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) {
g_printerr (_("ERROR: pipeline could not be constructed: %s.\n"),
GST_STR_NULL (error->message));
g_error_free (error);
} else {
g_printerr (_("ERROR: pipeline could not be constructed.\n"));
}
return 1;
} else if (error) {
g_printerr (_("WARNING: erroneous pipeline: %s\n"),
GST_STR_NULL (error->message));
g_error_free (error);
return 1;
}
if (verbose) {
gchar **exclude_list =
exclude_args ? g_strsplit (exclude_args, ",", 0) : NULL;
g_signal_connect (pipeline, "deep-notify",
G_CALLBACK (gst_object_default_deep_notify), exclude_list);
}
#ifndef GST_DISABLE_LOADSAVE
if (savefile) {
gst_xml_write_file (GST_ELEMENT (pipeline), fopen (savefile, "w"));
}
#endif
if (!savefile) {
GstState state, pending;
GstStateChangeReturn ret;
/* If the top-level object is not a pipeline, place it in a pipeline. */
if (!GST_IS_PIPELINE (pipeline)) {
GstElement *real_pipeline = gst_element_factory_make ("pipeline", NULL);
if (real_pipeline == NULL) {
g_printerr (_("ERROR: the 'pipeline' element wasn't found.\n"));
return 1;
}
gst_bin_add (GST_BIN (real_pipeline), pipeline);
pipeline = real_pipeline;
}
PRINT (_("Setting pipeline to PAUSED ...\n"));
ret = gst_element_set_state (pipeline, GST_STATE_PAUSED);
switch (ret) {
case GST_STATE_CHANGE_FAILURE:
g_printerr (_("ERROR: Pipeline doesn't want to pause.\n"));
res = -1;
event_loop (pipeline, FALSE, GST_STATE_VOID_PENDING);
goto end;
case GST_STATE_CHANGE_NO_PREROLL:
PRINT (_("Pipeline is live and does not need PREROLL ...\n"));
is_live = TRUE;
break;
case GST_STATE_CHANGE_ASYNC:
PRINT (_("Pipeline is PREROLLING ...\n"));
caught_error = event_loop (pipeline, TRUE, GST_STATE_PAUSED);
if (caught_error) {
g_printerr (_("ERROR: pipeline doesn't want to preroll.\n"));
goto end;
}
state = GST_STATE_PAUSED;
/* fallthrough */
case GST_STATE_CHANGE_SUCCESS:
PRINT (_("Pipeline is PREROLLED ...\n"));
break;
}
caught_error = event_loop (pipeline, FALSE, GST_STATE_PLAYING);
if (caught_error) {
g_printerr (_("ERROR: pipeline doesn't want to preroll.\n"));
} else {
GstClockTime tfthen, tfnow;
GstClockTimeDiff diff;
PRINT (_("Setting pipeline to PLAYING ...\n"));
if (gst_element_set_state (pipeline,
GST_STATE_PLAYING) == GST_STATE_CHANGE_FAILURE) {
GstMessage *err_msg;
GstBus *bus;
g_printerr (_("ERROR: pipeline doesn't want to play.\n"));
bus = gst_element_get_bus (pipeline);
if ((err_msg = gst_bus_poll (bus, GST_MESSAGE_ERROR, 0))) {
GError *gerror;
gchar *debug;
gst_message_parse_error (err_msg, &gerror, &debug);
gst_object_default_error (GST_MESSAGE_SRC (err_msg), gerror, debug);
gst_message_unref (err_msg);
g_error_free (gerror);
g_free (debug);
}
gst_object_unref (bus);
res = -1;
goto end;
}
tfthen = gst_util_get_timestamp ();
caught_error = event_loop (pipeline, TRUE, GST_STATE_PLAYING);
if (eos_on_shutdown && caught_error == ELR_INTERRUPT) {
PRINT (_("EOS on shutdown enabled -- Forcing EOS on the pipeline\n"));
waiting_eos = TRUE;
gst_element_send_event (pipeline, gst_event_new_eos ());
PRINT (_("Waiting for EOS...\n"));
caught_error = event_loop (pipeline, TRUE, GST_STATE_PLAYING);
if (caught_error == ELR_NO_ERROR) {
/* we got EOS */
PRINT (_("EOS received - stopping pipeline...\n"));
} else if (caught_error == ELR_ERROR) {
PRINT (_("An error happened while waiting for EOS\n"));
}
}
tfnow = gst_util_get_timestamp ();
diff = GST_CLOCK_DIFF (tfthen, tfnow);
g_print (_("Execution ended after %" G_GUINT64_FORMAT " ns.\n"), diff);
}
PRINT (_("Setting pipeline to PAUSED ...\n"));
gst_element_set_state (pipeline, GST_STATE_PAUSED);
if (caught_error == ELR_NO_ERROR)
gst_element_get_state (pipeline, &state, &pending, GST_CLOCK_TIME_NONE);
/* iterate mainloop to process pending stuff */
while (g_main_context_iteration (NULL, FALSE));
PRINT (_("Setting pipeline to READY ...\n"));
gst_element_set_state (pipeline, GST_STATE_READY);
gst_element_get_state (pipeline, &state, &pending, GST_CLOCK_TIME_NONE);
end:
PRINT (_("Setting pipeline to NULL ...\n"));
gst_element_set_state (pipeline, GST_STATE_NULL);
gst_element_get_state (pipeline, &state, &pending, GST_CLOCK_TIME_NONE);
}
PRINT (_("Freeing pipeline ...\n"));
gst_object_unref (pipeline);
gst_deinit ();
if (trace)
gst_alloc_trace_print_live ();
return res;
}
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