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gst-launch: Add a '--types' option to filter elements by types to print

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This way the user can easily figure out what are the available audio
encoder for example doing:

  gst-inspect-1.0 --types Encoder/Audio

https://bugzilla.gnome.org/show_bug.cgi?id=776392
This commit is contained in:
Thibault Saunier 2016-12-21 21:58:53 -03:00
parent 2d5dba8d05
commit 221d65a5e0
2 changed files with 48 additions and 2 deletions
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8
tools/gst-inspect-1.0.1
View file

@ -33,6 +33,14 @@ Print help synopsis and available FLAGS
.B \-a, \-\-print\-all
Print all plugins and elements
.TP 8
.B \-\-types=Element/Types
Allow inspecting only elements that match all the element types filtered
in this slash (\'/\') separated list of element types. Those types correspond to
what is also called \'klass\' which is a string describing the type of
element, like \'Decoder\', \'Audio\', \'Encoder\' etc... This options
implies that only elements will be printed (not typefind functions or
tracers).
.TP 8
.B \-\-print\-plugin\-auto\-install\-info
Print a machine-parsable list of features the specified plugin provides.
Useful in connection with external automatic plugin installation mechanisms.

42
tools/gst-inspect.c
View file

@ -926,10 +926,21 @@ print_blacklist (void)
}
static void
print_element_list (gboolean print_all)
print_element_list (gboolean print_all, gchar * ftypes)
{
int plugincount = 0, featurecount = 0, blacklistcount = 0;
GList *plugins, *orig_plugins;
gchar **types = NULL;
if (ftypes) {
gint i;
types = g_strsplit (ftypes, "/", -1);
for (i = 0; types[i]; i++)
*types[i] = g_ascii_toupper (*types[i]);
}
orig_plugins = plugins = gst_registry_get_plugin_list (gst_registry_get ());
while (plugins) {
@ -957,9 +968,27 @@ print_element_list (gboolean print_all)
featurecount++;
if (GST_IS_ELEMENT_FACTORY (feature)) {
const gchar *klass;
GstElementFactory *factory;
factory = GST_ELEMENT_FACTORY (feature);
if (types) {
gint i;
gboolean all_found = TRUE;
klass =
gst_element_factory_get_metadata (factory,
GST_ELEMENT_METADATA_KLASS);
for (i = 0; types[i]; i++) {
if (!strstr (klass, types[i])) {
all_found = FALSE;
break;
}
}
if (!all_found)
goto next;
}
if (print_all)
print_element_info (factory, TRUE);
else
@ -971,6 +1000,8 @@ print_element_list (gboolean print_all)
GstTypeFindFactory *factory;
const gchar *const *extensions;
if (types)
goto next;
factory = GST_TYPE_FIND_FACTORY (feature);
if (!print_all)
g_print ("%s: %s: ", gst_plugin_get_name (plugin),
@ -992,6 +1023,8 @@ print_element_list (gboolean print_all)
g_print ("no extensions\n");
}
} else {
if (types)
goto next;
if (!print_all)
n_print ("%s: %s (%s)\n", gst_plugin_get_name (plugin),
GST_OBJECT_NAME (feature), g_type_name (G_OBJECT_TYPE (feature)));
@ -1005,6 +1038,7 @@ print_element_list (gboolean print_all)
}
gst_plugin_list_free (orig_plugins);
g_strfreev (types);
g_print ("\n");
g_print (_("Total count: "));
@ -1462,6 +1496,7 @@ main (int argc, char *argv[])
guint minver_maj = GST_VERSION_MAJOR;
guint minver_min = GST_VERSION_MINOR;
guint minver_micro = 0;
gchar *types = NULL;
#ifndef GST_DISABLE_OPTION_PARSING
GOptionEntry options[] = {
{"print-all", 'a', 0, G_OPTION_ARG_NONE, &print_all,
@ -1475,6 +1510,9 @@ main (int argc, char *argv[])
"installation mechanisms"), NULL},
{"plugin", '\0', 0, G_OPTION_ARG_NONE, &plugin_name,
N_("List the plugin contents"), NULL},
{"types", 't', 0, G_OPTION_ARG_STRING, &types,
N_("A slashes ('/') separated list of types of elements (also known "
"as klass) to list. (unordered)"), NULL},
{"exists", '\0', 0, G_OPTION_ARG_NONE, &check_exists,
N_("Check if the specified element or plugin exists"), NULL},
{"atleast-version", '\0', 0, G_OPTION_ARG_STRING, &min_version,
@ -1582,7 +1620,7 @@ main (int argc, char *argv[])
if (print_aii)
print_all_plugin_automatic_install_info ();
else
print_element_list (print_all);
print_element_list (print_all, types);
}
} else {
/* else we try to get a factory */