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gstreamer/tools/gst-launch.c
Mathieu Duponchelle 4f9cac06e4 gst-launch: handle ERROR messages in the sync handler 
Errors causing the pipeline to fail going from NULL to PAUSED
were not displayed, and the pipeline was not dumped either in
those cases.

In addition, dumping the pipeline from the sync handler means
the dump matches exactly the state of the pipeline at the
moment the error was posted.
2019-12-27 10:06:45 +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., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#include <glib.h>
#include <stdio.h>
#include <string.h>
#include <signal.h>
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
#ifdef G_OS_UNIX
#include <glib-unix.h>
#include <sys/wait.h>
#elif defined (G_OS_WIN32)
#define WIN32_LEAN_AND_MEAN
#include <windows.h>
#include <io.h>
#ifndef STDOUT_FILENO
#define STDOUT_FILENO 1
#endif
#define isatty _isatty
#endif
#include <locale.h> /* for LC_ALL */
#include "tools.h"
extern volatile gboolean glib_on_error_halt;
#ifdef G_OS_UNIX
static void fault_restore (void);
static void fault_spin (void);
#endif
/* exit codes */
typedef enum _LaunchExitCode
{
LEC_STATE_CHANGE_FAILURE = -1,
LEC_NO_ERROR = 0,
LEC_ERROR,
LEC_INTERRUPT
} LaunchExitCode;
static GMainLoop *loop = NULL;
static GstElement *pipeline = NULL;
/* options */
static gboolean quiet = FALSE;
static gboolean tags = FALSE;
static gboolean toc = FALSE;
static gboolean messages = FALSE;
static gboolean eos_on_shutdown = FALSE;
static gchar **exclude_args = NULL;
/* pipeline status */
static gboolean is_live = FALSE;
static gboolean buffering = FALSE;
static LaunchExitCode last_launch_code = LEC_NO_ERROR;
static GstState target_state = GST_STATE_PAUSED;
static gboolean prerolled = FALSE;
static gboolean in_progress = FALSE;
static GstClockTime tfthen = GST_CLOCK_TIME_NONE;
static gboolean interrupting = FALSE;
static gboolean waiting_eos = FALSE;
/* convenience macro so we don't have to litter the code with if(!quiet) */
#define PRINT if(!quiet)gst_print
#ifdef G_OS_UNIX
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:
fprintf (stderr, "Caught SIGSEGV\n");
break;
case SIGQUIT:
if (!quiet)
printf ("Caught SIGQUIT\n");
break;
default:
fprintf (stderr, "signo: %d\n", signum);
break;
}
fault_spin ();
}
static void
fault_spin (void)
{
int spinning = TRUE;
glib_on_error_halt = FALSE;
g_on_error_stack_trace ("gst-launch-" GST_API_VERSION);
wait (NULL);
/* FIXME how do we know if we were run by libtool? */
fprintf (stderr,
"Spinning. Please run 'gdb gst-launch-" GST_API_VERSION " %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));
action.sa_handler = fault_handler_sighandler;
sigaction (SIGSEGV, &action, NULL);
sigaction (SIGQUIT, &action, NULL);
}
#endif /* G_OS_UNIX */
#if 0
typedef struct _GstIndexStats
{
gint id;
gchar *desc;
guint num_frames;
guint num_keyframes;
guint num_dltframes;
GstClockTime last_keyframe;
GstClockTime last_dltframe;
GstClockTime min_keyframe_gap;
GstClockTime max_keyframe_gap;
GstClockTime avg_keyframe_gap;
} GstIndexStats;
static void
entry_added (GstIndex * index, GstIndexEntry * entry, gpointer user_data)
{
GPtrArray *index_stats = (GPtrArray *) user_data;
GstIndexStats *s;
switch (entry->type) {
case GST_INDEX_ENTRY_ID:
/* we have a new writer */
GST_DEBUG_OBJECT (index, "id %d: describes writer %s", entry->id,
GST_INDEX_ID_DESCRIPTION (entry));
if (entry->id >= index_stats->len) {
g_ptr_array_set_size (index_stats, entry->id + 1);
}
s = g_new (GstIndexStats, 1);
s->id = entry->id;
s->desc = g_strdup (GST_INDEX_ID_DESCRIPTION (entry));
s->num_frames = s->num_keyframes = s->num_dltframes = 0;
s->last_keyframe = s->last_dltframe = GST_CLOCK_TIME_NONE;
s->min_keyframe_gap = s->max_keyframe_gap = s->avg_keyframe_gap =
GST_CLOCK_TIME_NONE;
g_ptr_array_index (index_stats, entry->id) = s;
break;
case GST_INDEX_ENTRY_FORMAT:
/* have not found any code calling this */
GST_DEBUG_OBJECT (index, "id %d: registered format %d for %s\n",
entry->id, GST_INDEX_FORMAT_FORMAT (entry),
GST_INDEX_FORMAT_KEY (entry));
break;
case GST_INDEX_ENTRY_ASSOCIATION:
{
gint64 ts;
GstAssocFlags flags = GST_INDEX_ASSOC_FLAGS (entry);
s = g_ptr_array_index (index_stats, entry->id);
gst_index_entry_assoc_map (entry, GST_FORMAT_TIME, &ts);
if (flags & GST_ASSOCIATION_FLAG_KEY_UNIT) {
s->num_keyframes++;
if (GST_CLOCK_TIME_IS_VALID (ts)) {
if (GST_CLOCK_TIME_IS_VALID (s->last_keyframe)) {
GstClockTimeDiff d = GST_CLOCK_DIFF (s->last_keyframe, ts);
if (G_UNLIKELY (d < 0)) {
GST_WARNING ("received out-of-order keyframe at %"
GST_TIME_FORMAT, GST_TIME_ARGS (ts));
/* FIXME: does it still make sense to use that for the statistics */
d = GST_CLOCK_DIFF (ts, s->last_keyframe);
}
if (GST_CLOCK_TIME_IS_VALID (s->min_keyframe_gap)) {
if (d < s->min_keyframe_gap)
s->min_keyframe_gap = d;
} else {
s->min_keyframe_gap = d;
}
if (GST_CLOCK_TIME_IS_VALID (s->max_keyframe_gap)) {
if (d > s->max_keyframe_gap)
s->max_keyframe_gap = d;
} else {
s->max_keyframe_gap = d;
}
if (GST_CLOCK_TIME_IS_VALID (s->avg_keyframe_gap)) {
s->avg_keyframe_gap = (d + s->num_frames * s->avg_keyframe_gap) /
(s->num_frames + 1);
} else {
s->avg_keyframe_gap = d;
}
}
s->last_keyframe = ts;
}
}
if (flags & GST_ASSOCIATION_FLAG_DELTA_UNIT) {
s->num_dltframes++;
if (GST_CLOCK_TIME_IS_VALID (ts)) {
s->last_dltframe = ts;
}
}
s->num_frames++;
break;
}
default:
break;
}
}
/* print statistics from the entry_added callback, free the entries */
static void
print_index_stats (GPtrArray * index_stats)
{
gint i;
if (index_stats->len) {
g_print ("%s:\n", _("Index statistics"));
}
for (i = 0; i < index_stats->len; i++) {
GstIndexStats *s = g_ptr_array_index (index_stats, i);
if (s) {
g_print ("id %d, %s\n", s->id, s->desc);
if (s->num_frames) {
GstClockTime last_frame = s->last_keyframe;
if (GST_CLOCK_TIME_IS_VALID (s->last_dltframe)) {
if (!GST_CLOCK_TIME_IS_VALID (last_frame) ||
(s->last_dltframe > last_frame))
last_frame = s->last_dltframe;
}
if (GST_CLOCK_TIME_IS_VALID (last_frame)) {
g_print (" total time = %" GST_TIME_FORMAT "\n",
GST_TIME_ARGS (last_frame));
}
g_print (" frame/keyframe rate = %u / %u = ", s->num_frames,
s->num_keyframes);
if (s->num_keyframes)
g_print ("%lf\n", s->num_frames / (gdouble) s->num_keyframes);
else
g_print ("-\n");
if (s->num_keyframes) {
g_print (" min/avg/max keyframe gap = %" GST_TIME_FORMAT ", %"
GST_TIME_FORMAT ", %" GST_TIME_FORMAT "\n",
GST_TIME_ARGS (s->min_keyframe_gap),
GST_TIME_ARGS (s->avg_keyframe_gap),
GST_TIME_ARGS (s->max_keyframe_gap));
}
} else {
g_print (" no stats\n");
}
g_free (s->desc);
g_free (s);
}
}
}
#endif
/* Kids, use the functions from libgstpbutils in gst-plugins-base in your
* own code (we can't do that here because it would introduce a circular
* dependency) */
static gboolean
gst_is_missing_plugin_message (GstMessage * msg)
{
if (GST_MESSAGE_TYPE (msg) != GST_MESSAGE_ELEMENT
|| gst_message_get_structure (msg) == NULL)
return FALSE;
return gst_structure_has_name (gst_message_get_structure (msg),
"missing-plugin");
}
static const gchar *
gst_missing_plugin_message_get_description (GstMessage * msg)
{
return gst_structure_get_string (gst_message_get_structure (msg), "name");
}
static void
print_error_message (GstMessage * msg)
{
GError *err = NULL;
gchar *name, *debug = NULL;
name = gst_object_get_path_string (msg->src);
gst_message_parse_error (msg, &err, &debug);
gst_printerr (_("ERROR: from element %s: %s\n"), name, err->message);
if (debug != NULL)
gst_printerr (_("Additional debug info:\n%s\n"), debug);
g_clear_error (&err);
g_free (debug);
g_free (name);
}
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 = NULL;
if (gst_tag_get_type (tag) == G_TYPE_STRING) {
if (!gst_tag_list_get_string_index (list, tag, i, &str)) {
g_warning ("Couldn't fetch string for %s tag", tag);
g_assert_not_reached ();
}
} else if (gst_tag_get_type (tag) == GST_TYPE_SAMPLE) {
GstSample *sample = NULL;
if (gst_tag_list_get_sample_index (list, tag, i, &sample)) {
GstBuffer *img = gst_sample_get_buffer (sample);
GstCaps *caps = gst_sample_get_caps (sample);
if (img) {
if (caps) {
gchar *caps_str;
caps_str = gst_caps_to_string (caps);
str = g_strdup_printf ("buffer of %" G_GSIZE_FORMAT " bytes, "
"type: %s", gst_buffer_get_size (img), caps_str);
g_free (caps_str);
} else {
str = g_strdup_printf ("buffer of %" G_GSIZE_FORMAT " bytes",
gst_buffer_get_size (img));
}
} else {
str = g_strdup ("NULL buffer");
}
} else {
g_warning ("Couldn't fetch sample for %s tag", tag);
g_assert_not_reached ();
}
gst_sample_unref (sample);
} else if (gst_tag_get_type (tag) == GST_TYPE_DATE_TIME) {
GstDateTime *dt = NULL;
gst_tag_list_get_date_time_index (list, tag, i, &dt);
if (!gst_date_time_has_time (dt)) {
str = gst_date_time_to_iso8601_string (dt);
} else {
gdouble tz_offset = gst_date_time_get_time_zone_offset (dt);
gchar tz_str[32];
if (tz_offset != 0.0) {
g_snprintf (tz_str, sizeof (tz_str), "(UTC %s%gh)",
(tz_offset > 0.0) ? "+" : "", tz_offset);
} else {
g_snprintf (tz_str, sizeof (tz_str), "(UTC)");
}
str = g_strdup_printf ("%04u-%02u-%02u %02u:%02u:%02u %s",
gst_date_time_get_year (dt), gst_date_time_get_month (dt),
gst_date_time_get_day (dt), gst_date_time_get_hour (dt),
gst_date_time_get_minute (dt), gst_date_time_get_second (dt),
tz_str);
}
gst_date_time_unref (dt);
} else {
str =
g_strdup_value_contents (gst_tag_list_get_value_index (list, tag, i));
}
if (str) {
PRINT ("%16s: %s\n", i == 0 ? gst_tag_get_nick (tag) : "", str);
g_free (str);
}
}
}
static void
print_tag_foreach (const GstTagList * tags, const gchar * tag,
gpointer user_data)
{
GValue val = { 0, };
gchar *str;
gint depth = GPOINTER_TO_INT (user_data);
if (!gst_tag_list_copy_value (&val, tags, tag))
return;
if (G_VALUE_HOLDS_STRING (&val))
str = g_value_dup_string (&val);
else
str = gst_value_serialize (&val);
g_print ("%*s%s: %s\n", 2 * depth, " ", gst_tag_get_nick (tag), str);
g_free (str);
g_value_unset (&val);
}
#define MAX_INDENT 40
static void
print_toc_entry (gpointer data, gpointer user_data)
{
GstTocEntry *entry = (GstTocEntry *) data;
const gchar spc[MAX_INDENT + 1] = " ";
guint indent = MIN (GPOINTER_TO_UINT (user_data), MAX_INDENT);
const GstTagList *tags;
GList *subentries;
gint64 start, stop;
gst_toc_entry_get_start_stop_times (entry, &start, &stop);
PRINT ("%s%s:", &spc[MAX_INDENT - indent],
gst_toc_entry_type_get_nick (gst_toc_entry_get_entry_type (entry)));
if (GST_CLOCK_TIME_IS_VALID (start)) {
PRINT (" start: %" GST_TIME_FORMAT, GST_TIME_ARGS (start));
}
if (GST_CLOCK_TIME_IS_VALID (stop)) {
PRINT (" stop: %" GST_TIME_FORMAT, GST_TIME_ARGS (stop));
}
PRINT ("\n");
indent += 2;
/* print tags */
tags = gst_toc_entry_get_tags (entry);
if (tags)
gst_tag_list_foreach (tags, print_tag_foreach, GUINT_TO_POINTER (indent));
/* loop over sub-toc entries */
subentries = gst_toc_entry_get_sub_entries (entry);
g_list_foreach (subentries, print_toc_entry, GUINT_TO_POINTER (indent));
}
#ifdef G_OS_UNIX
static guint signal_watch_hup_id;
#endif
#if defined(G_OS_UNIX) || defined(G_OS_WIN32)
static guint signal_watch_intr_id;
#endif
#if defined(G_OS_UNIX) || defined(G_OS_WIN32)
/* As the interrupt handler is dispatched from GMainContext as a GSourceFunc
* handler, we can react to this by posting a message. */
static gboolean
intr_handler (gpointer user_data)
{
GstElement *pipeline = (GstElement *) user_data;
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 signal handler */
signal_watch_intr_id = 0;
return G_SOURCE_REMOVE;
}
#ifdef G_OS_UNIX
static gboolean
hup_handler (gpointer user_data)
{
GstElement *pipeline = (GstElement *) user_data;
if (g_getenv ("GST_DEBUG_DUMP_DOT_DIR") != NULL) {
PRINT ("SIGHUP: dumping dot file snapshot ...\n");
} else {
PRINT ("SIGHUP: not dumping dot file snapshot, GST_DEBUG_DUMP_DOT_DIR "
"environment variable not set.\n");
}
/* dump graph on hup */
GST_DEBUG_BIN_TO_DOT_FILE_WITH_TS (GST_BIN (pipeline),
GST_DEBUG_GRAPH_SHOW_ALL, "gst-launch.snapshot");
return G_SOURCE_CONTINUE;
}
#endif
#if defined(G_OS_WIN32) /* G_OS_UNIX */
static BOOL WINAPI
w32_intr_handler (DWORD dwCtrlType)
{
if (pipeline)
intr_handler ((gpointer) pipeline);
SetConsoleCtrlHandler (w32_intr_handler, FALSE);
return TRUE;
}
#endif /* G_OS_WIN32 */
#endif /* G_OS_UNIX */
static void
do_initial_play (GstElement * pipeline)
{
PRINT (_("Setting pipeline to PLAYING ...\n"));
tfthen = gst_util_get_timestamp ();
if (gst_element_set_state (pipeline,
GST_STATE_PLAYING) == GST_STATE_CHANGE_FAILURE) {
gst_printerr (_("ERROR: pipeline doesn't want to play.\n"));
last_launch_code = LEC_STATE_CHANGE_FAILURE;
/* error message will be posted later */
return;
}
target_state = GST_STATE_PLAYING;
}
static gboolean
bus_handler (GstBus * bus, GstMessage * message, gpointer data)
{
{
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)) {
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)) {
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)) {
PRINT (_("Got message #%u from object \"%s\" (%s): "),
(guint) seqnum, GST_OBJECT_NAME (src_obj),
GST_MESSAGE_TYPE_NAME (message));
} else {
PRINT (_("Got message #%u (%s): "), (guint) seqnum,
GST_MESSAGE_TYPE_NAME (message));
}
if (s) {
gchar *sstr;
sstr = gst_structure_to_string (s);
PRINT ("%s\n", sstr);
g_free (sstr);
} else {
PRINT ("no message details\n");
}
}
switch (GST_MESSAGE_TYPE (message)) {
case GST_MESSAGE_NEW_CLOCK:
{
GstClock *clock;
gst_message_parse_new_clock (message, &clock);
PRINT ("New clock: %s\n", (clock ? GST_OBJECT_NAME (clock) : "NULL"));
break;
}
case GST_MESSAGE_CLOCK_LOST:
PRINT ("Clock lost, selecting a new one\n");
gst_element_set_state (pipeline, GST_STATE_PAUSED);
gst_element_set_state (pipeline, GST_STATE_PLAYING);
break;
case GST_MESSAGE_EOS:{
PRINT (_("Got EOS from element \"%s\".\n"),
GST_MESSAGE_SRC_NAME (message));
if (eos_on_shutdown)
PRINT (_("EOS received - stopping pipeline...\n"));
g_main_loop_quit (loop);
break;
}
case GST_MESSAGE_TAG:
if (tags) {
GstTagList *tag_list;
if (GST_IS_ELEMENT (GST_MESSAGE_SRC (message))) {
PRINT (_("FOUND TAG : found by element \"%s\".\n"),
GST_MESSAGE_SRC_NAME (message));
} else if (GST_IS_PAD (GST_MESSAGE_SRC (message))) {
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))) {
PRINT (_("FOUND TAG : found by object \"%s\".\n"),
GST_MESSAGE_SRC_NAME (message));
} else {
PRINT (_("FOUND TAG\n"));
}
gst_message_parse_tag (message, &tag_list);
gst_tag_list_foreach (tag_list, print_tag, NULL);
gst_tag_list_unref (tag_list);
}
break;
case GST_MESSAGE_TOC:
if (toc) {
GstToc *toc;
GList *entries;
gboolean updated;
if (GST_IS_ELEMENT (GST_MESSAGE_SRC (message))) {
PRINT (_("FOUND TOC : found by element \"%s\".\n"),
GST_MESSAGE_SRC_NAME (message));
} else if (GST_IS_OBJECT (GST_MESSAGE_SRC (message))) {
PRINT (_("FOUND TOC : found by object \"%s\".\n"),
GST_MESSAGE_SRC_NAME (message));
} else {
PRINT (_("FOUND TOC\n"));
}
gst_message_parse_toc (message, &toc, &updated);
/* recursively loop over toc entries */
entries = gst_toc_get_entries (toc);
g_list_foreach (entries, print_toc_entry, GUINT_TO_POINTER (0));
gst_toc_unref (toc);
}
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) {
PRINT (_("INFO:\n%s\n"), debug);
}
g_clear_error (&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);
PRINT (_("WARNING: from element %s: %s\n"), name, gerror->message);
if (debug) {
PRINT (_("Additional debug info:\n%s\n"), debug);
}
g_clear_error (&gerror);
g_free (debug);
g_free (name);
break;
}
case GST_MESSAGE_STATE_CHANGED:{
GstState old, new, pending;
/* we only care about pipeline state change messages */
if (GST_MESSAGE_SRC (message) != GST_OBJECT_CAST (pipeline))
break;
gst_message_parse_state_changed (message, &old, &new, &pending);
if (target_state == GST_STATE_PAUSED && new == target_state) {
prerolled = TRUE;
PRINT (_("Pipeline is PREROLLED ...\n"));
/* 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 (in_progress) {
PRINT (_("Prerolled, waiting for progress to finish...\n"));
break;
}
do_initial_play (pipeline);
}
/* 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 (target_state == GST_STATE_PAUSED) {
do_initial_play (pipeline);
break;
}
/* 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 {
/* buffering busy */
if (!buffering && 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"));
interrupting = TRUE;
if (eos_on_shutdown) {
if (waiting_eos) {
PRINT (_
("Interrupt while waiting for EOS - stopping pipeline...\n"));
g_main_loop_quit (loop);
} else {
PRINT (_
("EOS on shutdown enabled -- Forcing EOS on the pipeline\n"));
gst_element_send_event (pipeline, gst_event_new_eos ());
PRINT (_("Waiting for EOS...\n"));
waiting_eos = TRUE;
}
} else {
g_main_loop_quit (loop);
}
}
break;
}
case GST_MESSAGE_PROGRESS:
{
GstProgressType type;
gchar *code, *text;
gst_message_parse_progress (message, &type, &code, &text);
switch (type) {
case GST_PROGRESS_TYPE_START:
case GST_PROGRESS_TYPE_CONTINUE:
in_progress = TRUE;
break;
case GST_PROGRESS_TYPE_COMPLETE:
case GST_PROGRESS_TYPE_CANCELED:
case GST_PROGRESS_TYPE_ERROR:
in_progress = FALSE;
break;
default:
break;
}
PRINT (_("Progress: (%s) %s\n"), code, text);
g_free (code);
g_free (text);
if (!in_progress && prerolled && target_state == GST_STATE_PAUSED) {
do_initial_play (pipeline);
}
break;
}
case GST_MESSAGE_ELEMENT:{
if (gst_is_missing_plugin_message (message)) {
const gchar *desc;
desc = gst_missing_plugin_message_get_description (message);
PRINT (_("Missing element: %s\n"), desc ? desc : "(no description)");
}
break;
}
case GST_MESSAGE_HAVE_CONTEXT:{
GstContext *context;
const gchar *context_type;
gchar *context_str;
gst_message_parse_have_context (message, &context);
context_type = gst_context_get_context_type (context);
context_str =
gst_structure_to_string (gst_context_get_structure (context));
PRINT (_("Got context from element '%s': %s=%s\n"),
GST_ELEMENT_NAME (GST_MESSAGE_SRC (message)), context_type,
context_str);
g_free (context_str);
gst_context_unref (context);
break;
}
case GST_MESSAGE_PROPERTY_NOTIFY:{
const GValue *val;
const gchar *name;
GstObject *obj;
gchar *val_str = NULL;
gchar **ex_prop, *obj_name;
if (quiet)
break;
gst_message_parse_property_notify (message, &obj, &name, &val);
/* Let's not print anything for excluded properties... */
ex_prop = exclude_args;
while (ex_prop != NULL && *ex_prop != NULL) {
if (strcmp (name, *ex_prop) == 0)
break;
ex_prop++;
}
if (ex_prop != NULL && *ex_prop != NULL)
break;
obj_name = gst_object_get_path_string (GST_OBJECT (obj));
if (val != NULL) {
if (G_VALUE_HOLDS_STRING (val))
val_str = g_value_dup_string (val);
else if (G_VALUE_TYPE (val) == GST_TYPE_CAPS)
val_str = gst_caps_to_string (g_value_get_boxed (val));
else if (G_VALUE_TYPE (val) == GST_TYPE_TAG_LIST)
val_str = gst_tag_list_to_string (g_value_get_boxed (val));
else if (G_VALUE_TYPE (val) == GST_TYPE_STRUCTURE)
val_str = gst_structure_to_string (g_value_get_boxed (val));
else
val_str = gst_value_serialize (val);
} else {
val_str = g_strdup ("(no value)");
}
g_print ("%s: %s = %s\n", obj_name, name, val_str);
g_free (obj_name);
g_free (val_str);
break;
}
default:
/* just be quiet by default */
break;
}
}
return TRUE;
}
static GstBusSyncReply
bus_sync_handler (GstBus * bus, GstMessage * message, gpointer data)
{
GstElement *pipeline = (GstElement *) data;
switch (GST_MESSAGE_TYPE (message)) {
case GST_MESSAGE_STATE_CHANGED:
/* we only care about pipeline state change messages */
if (GST_MESSAGE_SRC (message) == GST_OBJECT_CAST (pipeline)) {
GstState old, new, pending;
gchar *state_transition_name;
gst_message_parse_state_changed (message, &old, &new, &pending);
state_transition_name = g_strdup_printf ("%s_%s",
gst_element_state_get_name (old), gst_element_state_get_name (new));
/* dump graph for (some) pipeline state changes */
{
gchar *dump_name = g_strconcat ("gst-launch.", state_transition_name,
NULL);
GST_DEBUG_BIN_TO_DOT_FILE_WITH_TS (GST_BIN (pipeline),
GST_DEBUG_GRAPH_SHOW_ALL, dump_name);
g_free (dump_name);
}
/* place a marker into e.g. strace logs */
{
gchar *access_name = g_strconcat (g_get_tmp_dir (), G_DIR_SEPARATOR_S,
"gst-launch", G_DIR_SEPARATOR_S, state_transition_name, NULL);
g_file_test (access_name, G_FILE_TEST_EXISTS);
g_free (access_name);
}
g_free (state_transition_name);
}
break;
case GST_MESSAGE_ERROR:{
/* dump graph on error */
GST_DEBUG_BIN_TO_DOT_FILE_WITH_TS (GST_BIN (pipeline),
GST_DEBUG_GRAPH_SHOW_ALL, "gst-launch.error");
print_error_message (message);
if (target_state == GST_STATE_PAUSED) {
gst_printerr (_("ERROR: pipeline doesn't want to preroll.\n"));
} else if (interrupting) {
PRINT (_("An error happened while waiting for EOS\n"));
}
/* we have an error */
last_launch_code = LEC_ERROR;
g_main_loop_quit (loop);
break;
}
default:
break;
}
return GST_BUS_PASS;
}
static gboolean
query_pipeline_position (gpointer user_data)
{
gint64 pos = -1, dur = -1;
gboolean output_is_tty = GPOINTER_TO_INT (user_data);
if (buffering)
return G_SOURCE_CONTINUE;
gst_element_query_position (pipeline, GST_FORMAT_TIME, &pos);
gst_element_query_duration (pipeline, GST_FORMAT_TIME, &dur);
if (pos >= 0) {
gchar dstr[32], pstr[32];
/* FIXME: pretty print in nicer format */
g_snprintf (pstr, 32, "%" GST_TIME_FORMAT, GST_TIME_ARGS (pos));
pstr[9] = '\0';
g_snprintf (dstr, 32, "%" GST_TIME_FORMAT, GST_TIME_ARGS (dur));
dstr[9] = '\0';
if (dur > 0 && dur >= pos) {
gdouble percent;
percent = 100 * (gdouble) (pos) / dur;
gst_print ("%s / %s (%.1f %%)%c", pstr, dstr, percent,
output_is_tty ? '\r' : '\n');
} else
gst_print ("%s / %s%c", pstr, dstr, output_is_tty ? '\r' : '\n');
}
return G_SOURCE_CONTINUE;
}
int
main (int argc, char *argv[])
{
/* options */
gboolean verbose = FALSE;
gboolean no_fault = FALSE;
#if 0
gboolean check_index = FALSE;
#endif
gchar *savefile = NULL;
gboolean no_position = FALSE;
gboolean force_position = FALSE;
#ifndef GST_DISABLE_OPTION_PARSING
GOptionEntry options[] = {
{"tags", 't', 0, G_OPTION_ARG_NONE, &tags,
N_("Output tags (also known as metadata)"), NULL},
{"toc", 'c', 0, G_OPTION_ARG_NONE, &toc,
N_("Output TOC (chapters and editions)"), 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_STRING_ARRAY, &exclude_args,
N_("Do not output status information for the specified property "
"if verbose output is enabled (can be used multiple times)"),
N_("PROPERTY-NAME")},
{"no-fault", 'f', 0, G_OPTION_ARG_NONE, &no_fault,
N_("Do not install a fault handler"), NULL},
{"eos-on-shutdown", 'e', 0, G_OPTION_ARG_NONE, &eos_on_shutdown,
N_("Force EOS on sources before shutting the pipeline down"), NULL},
#if 0
{"index", 'i', 0, G_OPTION_ARG_NONE, &check_index,
N_("Gather and print index statistics"), NULL},
#endif
GST_TOOLS_GOPTION_VERSION,
{"no-position", '\0', 0, G_OPTION_ARG_NONE, &no_position,
N_("Do not print current position of pipeline. "
"If this option is unspecified, the position will be printed "
"when stdout is a TTY. "
"To enable printing position when stdout is not a TTY, "
"use \"force-position\" option"), NULL},
{"force-position", '\0', 0, G_OPTION_ARG_NONE, &force_position,
N_("Allow printing current position of pipeline even if "
"stdout is not a TTY. This option has no effect if "
"the \"no-position\" option is specified"),
NULL},
{NULL}
};
GOptionContext *ctx;
GError *err = NULL;
#endif
#if 0
GstIndex *index;
GPtrArray *index_stats = NULL;
#endif
gchar **argvn;
GError *error = NULL;
gulong deep_notify_id = 0;
guint bus_watch_id = 0;
GSource *position_source = NULL;
free (malloc (8)); /* -lefence */
setlocale (LC_ALL, "");
#ifdef ENABLE_NLS
bindtextdomain (GETTEXT_PACKAGE, LOCALEDIR);
bind_textdomain_codeset (GETTEXT_PACKAGE, "UTF-8");
textdomain (GETTEXT_PACKAGE);
#endif
g_set_prgname ("gst-launch-" GST_API_VERSION);
/* Ensure XInitThreads() is called if/when needed */
g_setenv ("GST_GL_XINITTHREADS", "1", TRUE);
#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)
gst_printerr ("Error initializing: %s\n", GST_STR_NULL (err->message));
else
gst_printerr ("Error initializing: Unknown error!\n");
g_clear_error (&err);
g_option_context_free (ctx);
exit (1);
}
g_option_context_free (ctx);
#else
gst_init (&argc, &argv);
#endif
gst_tools_print_version ();
#ifdef G_OS_UNIX
if (!no_fault)
fault_setup ();
#endif
/* make a null-terminated version of argv */
argvn = g_new0 (char *, argc);
memcpy (argvn, argv + 1, sizeof (char *) * (argc - 1));
{
pipeline =
(GstElement *) gst_parse_launchv ((const gchar **) argvn, &error);
}
g_free (argvn);
if (!pipeline) {
if (error) {
gst_printerr (_("ERROR: pipeline could not be constructed: %s.\n"),
GST_STR_NULL (error->message));
g_clear_error (&error);
} else {
gst_printerr (_("ERROR: pipeline could not be constructed.\n"));
}
return 1;
} else if (error) {
gst_printerr (_("WARNING: erroneous pipeline: %s\n"),
GST_STR_NULL (error->message));
g_clear_error (&error);
return 1;
}
loop = g_main_loop_new (NULL, FALSE);
if (!savefile) {
GstState state, pending;
GstStateChangeReturn ret;
GstBus *bus;
/* 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) {
gst_printerr (_("ERROR: the 'pipeline' element wasn't found.\n"));
return 1;
}
gst_bin_add (GST_BIN (real_pipeline), pipeline);
pipeline = real_pipeline;
}
if (verbose) {
deep_notify_id =
gst_element_add_property_deep_notify_watch (pipeline, NULL, TRUE);
}
#if 0
if (check_index) {
/* gst_index_new() creates a null-index, it does not store anything, but
* the entry-added signal works and this is what we use to build the
* statistics */
index = gst_index_new ();
if (index) {
index_stats = g_ptr_array_new ();
g_signal_connect (G_OBJECT (index), "entry-added",
G_CALLBACK (entry_added), index_stats);
g_object_set (G_OBJECT (index), "resolver", GST_INDEX_RESOLVER_GTYPE,
NULL);
gst_element_set_index (pipeline, index);
}
}
#endif
bus = gst_element_get_bus (pipeline);
gst_bus_set_sync_handler (bus, bus_sync_handler, (gpointer) pipeline, NULL);
bus_watch_id = gst_bus_add_watch (bus, bus_handler, NULL);
gst_object_unref (bus);
PRINT (_("Setting pipeline to PAUSED ...\n"));
ret = gst_element_set_state (pipeline, GST_STATE_PAUSED);
switch (ret) {
case GST_STATE_CHANGE_FAILURE:
gst_printerr (_("Failed to set pipeline to PAUSED.\n"));
last_launch_code = LEC_STATE_CHANGE_FAILURE;
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"));
break;
default:
break;
}
#ifdef G_OS_UNIX
signal_watch_intr_id =
g_unix_signal_add (SIGINT, (GSourceFunc) intr_handler, pipeline);
signal_watch_hup_id =
g_unix_signal_add (SIGHUP, (GSourceFunc) hup_handler, pipeline);
#elif defined(G_OS_WIN32)
SetConsoleCtrlHandler (w32_intr_handler, TRUE);
#endif
if (!no_position) {
gboolean output_is_tty = TRUE;
if (!isatty (STDOUT_FILENO))
output_is_tty = FALSE;
if (output_is_tty || (!output_is_tty && force_position)) {
position_source = g_timeout_source_new (100);
g_source_set_callback (position_source, query_pipeline_position,
GINT_TO_POINTER (output_is_tty), NULL);
g_source_attach (position_source, NULL);
}
}
/* playing state will be set on state-changed message handler */
g_main_loop_run (loop);
if (position_source) {
g_source_destroy (position_source);
g_source_unref (position_source);
}
{
GstClockTime tfnow;
GstClockTimeDiff diff;
if (GST_CLOCK_TIME_IS_VALID (tfthen)) {
tfnow = gst_util_get_timestamp ();
diff = GST_CLOCK_DIFF (tfthen, tfnow);
PRINT (_("Execution ended after %" GST_TIME_FORMAT "\n"),
GST_TIME_ARGS (diff));
}
}
PRINT (_("Setting pipeline to PAUSED ...\n"));
gst_element_set_state (pipeline, GST_STATE_PAUSED);
if (last_launch_code == LEC_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));
/* No need to see all those pad caps going to NULL etc., it's just noise */
if (deep_notify_id != 0)
g_signal_handler_disconnect (pipeline, deep_notify_id);
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);
#if 0
if (check_index) {
print_index_stats (index_stats);
g_ptr_array_free (index_stats, TRUE);
}
#endif
end:
PRINT (_("Setting pipeline to NULL ...\n"));
gst_element_set_state (pipeline, GST_STATE_NULL);
#ifdef G_OS_UNIX
if (signal_watch_intr_id > 0)
g_source_remove (signal_watch_intr_id);
if (signal_watch_hup_id > 0)
g_source_remove (signal_watch_hup_id);
#endif
g_source_remove (bus_watch_id);
g_main_loop_unref (loop);
}
PRINT (_("Freeing pipeline ...\n"));
gst_object_unref (pipeline);
gst_deinit ();
return last_launch_code;
}
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