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gstreamer/tools/gst-launch.c
Tim-Philipp Müller 939a7fee6c tools: gst-launch: fix up caps printing in verbose mode 
Add missing 'else' and print caps and taglists without the
annoying duplicate string escaping, making both nicer to read.

Fixes string leak and coverity CID 1358492.
2016-04-13 16:42:31 +01:00

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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>
#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
/* 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 toc = FALSE;
static gboolean messages = FALSE;
static gboolean is_live = FALSE;
static gboolean waiting_eos = FALSE;
static gchar **exclude_args = NULL;
/* convenience macro so we don't have to litter the code with if(!quiet) */
#define PRINT if(!quiet)g_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);
g_printerr (_("ERROR: from element %s: %s\n"), name, err->message);
if (debug != NULL)
g_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));
}
#if defined(G_OS_UNIX) || defined(G_OS_WIN32)
static guint signal_watch_id;
#if defined(G_OS_WIN32)
static GstElement *intr_pipeline;
#endif
#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_id = 0;
return FALSE;
}
#if defined(G_OS_WIN32) /* G_OS_UNIX */
static BOOL WINAPI
w32_intr_handler (DWORD dwCtrlType)
{
intr_handler ((gpointer) intr_pipeline);
intr_pipeline = NULL;
return TRUE;
}
#endif /* G_OS_WIN32 */
#endif /* G_OS_UNIX */
/* 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, gboolean do_progress,
GstState target_state)
{
GstBus *bus;
GstMessage *message = NULL;
EventLoopResult res = ELR_NO_ERROR;
gboolean buffering = FALSE, in_progress = FALSE;
gboolean prerolled = target_state != GST_STATE_PAUSED;
bus = gst_element_get_bus (GST_ELEMENT (pipeline));
#ifdef G_OS_UNIX
signal_watch_id =
g_unix_signal_add (SIGINT, (GSourceFunc) intr_handler, pipeline);
#elif defined(G_OS_WIN32)
intr_pipeline = NULL;
if (SetConsoleCtrlHandler (w32_intr_handler, TRUE))
intr_pipeline = 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)) {
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:{
waiting_eos = FALSE;
PRINT (_("Got EOS from element \"%s\".\n"),
GST_MESSAGE_SRC_NAME (message));
goto exit;
}
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_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);
/* we have an error */
res = ELR_ERROR;
goto exit;
}
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 we reached the final target state, exit */
if (target_state == GST_STATE_PAUSED && new == target_state) {
prerolled = TRUE;
/* 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;
}
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 if (prerolled && !in_progress)
goto exit;
} 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"));
res = ELR_INTERRUPT;
goto exit;
}
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:
if (do_progress) {
in_progress = TRUE;
blocking = 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 (do_progress && !in_progress && !buffering && prerolled)
goto exit;
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
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;
}
if (message)
gst_message_unref (message);
}
g_assert_not_reached ();
exit:
{
if (message)
gst_message_unref (message);
gst_object_unref (bus);
#ifdef G_OS_UNIX
if (signal_watch_id > 0)
g_source_remove (signal_watch_id);
#elif defined(G_OS_WIN32)
intr_pipeline = NULL;
SetConsoleCtrlHandler (w32_intr_handler, FALSE);
#endif
return res;
}
}
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;
default:
break;
}
return GST_BUS_PASS;
}
int
main (int argc, char *argv[])
{
/* options */
gboolean verbose = FALSE;
gboolean no_fault = FALSE;
gboolean eos_on_shutdown = FALSE;
#if 0
gboolean check_index = FALSE;
#endif
gchar *savefile = NULL;
#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,
{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;
gint res = 0;
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);
#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_printerr ("Error initializing: %s\n", GST_STR_NULL (err->message));
else
g_printerr ("Error initializing: Unknown error!\n");
g_clear_error (&error);
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) {
g_printerr (_("ERROR: pipeline could not be constructed: %s.\n"),
GST_STR_NULL (error->message));
g_clear_error (&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_clear_error (&error);
return 1;
}
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) {
g_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);
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:
g_printerr (_("ERROR: Pipeline doesn't want to pause.\n"));
res = -1;
event_loop (pipeline, FALSE, 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, TRUE, GST_STATE_PAUSED);
if (caught_error) {
g_printerr (_("ERROR: pipeline doesn't want to preroll.\n"));
res = caught_error;
goto end;
}
state = GST_STATE_PAUSED;
/* fallthrough */
case GST_STATE_CHANGE_SUCCESS:
PRINT (_("Pipeline is PREROLLED ...\n"));
break;
}
caught_error = event_loop (pipeline, FALSE, TRUE, GST_STATE_PLAYING);
if (caught_error) {
g_printerr (_("ERROR: pipeline doesn't want to preroll.\n"));
res = caught_error;
} 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))) {
print_error_message (err_msg);
gst_message_unref (err_msg);
}
gst_object_unref (bus);
res = -1;
goto end;
}
tfthen = gst_util_get_timestamp ();
caught_error = event_loop (pipeline, TRUE, FALSE, GST_STATE_PLAYING);
res = caught_error;
if (eos_on_shutdown && caught_error != ELR_NO_ERROR) {
gboolean ignore_errors;
waiting_eos = TRUE;
if (caught_error == ELR_INTERRUPT) {
PRINT (_("EOS on shutdown enabled -- Forcing EOS on the pipeline\n"));
gst_element_send_event (pipeline, gst_event_new_eos ());
ignore_errors = FALSE;
} else {
PRINT (_("EOS on shutdown enabled -- waiting for EOS after Error\n"));
ignore_errors = TRUE;
}
PRINT (_("Waiting for EOS...\n"));
while (TRUE) {
caught_error = event_loop (pipeline, TRUE, FALSE, GST_STATE_PLAYING);
if (caught_error == ELR_NO_ERROR) {
/* we got EOS */
PRINT (_("EOS received - stopping pipeline...\n"));
break;
} else if (caught_error == ELR_INTERRUPT) {
PRINT (_
("Interrupt while waiting for EOS - stopping pipeline...\n"));
res = caught_error;
break;
} else if (caught_error == ELR_ERROR) {
if (!ignore_errors) {
PRINT (_("An error happened while waiting for EOS\n"));
res = caught_error;
break;
}
}
}
}
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 (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));
/* 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);
}
PRINT (_("Freeing pipeline ...\n"));
gst_object_unref (pipeline);
gst_deinit ();
return res;
}
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