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gstreamer/tools/gst-inspect.c
Tim-Philipp Müller b923b7f901 tools: print "pad-added", "pad-removed" and "no-more-pads" signals for elements with sometimes pads 
It's often not obvious to people that elements like e.g. uridecodebin
(or demuxers) automatically support the standard signals of the
GstElement class, so let's print the useful pad-related ones for
elements with sometimes pads.
2011-02-28 14:59:33 +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-inspect.c: tool to inspect the GStreamer registry
*
* 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
#include <gst/controller/gstcontroller.h>
#include "tools.h"
#include <string.h>
#include <locale.h>
#include <glib/gprintf.h>
static char *_name = NULL;
static int print_element_info (GstElementFactory * factory,
gboolean print_names);
static void
n_print (const char *format, ...)
{
va_list args;
if (_name)
g_print ("%s", _name);
va_start (args, format);
g_vprintf (format, args);
va_end (args);
}
static gboolean
print_field (GQuark field, const GValue * value, gpointer pfx)
{
gchar *str = gst_value_serialize (value);
n_print ("%s %15s: %s\n", (gchar *) pfx, g_quark_to_string (field), str);
g_free (str);
return TRUE;
}
static void
print_caps (const GstCaps * caps, const gchar * pfx)
{
guint i;
g_return_if_fail (caps != NULL);
if (gst_caps_is_any (caps)) {
n_print ("%sANY\n", pfx);
return;
}
if (gst_caps_is_empty (caps)) {
n_print ("%sEMPTY\n", pfx);
return;
}
for (i = 0; i < gst_caps_get_size (caps); i++) {
GstStructure *structure = gst_caps_get_structure (caps, i);
n_print ("%s%s\n", pfx, gst_structure_get_name (structure));
gst_structure_foreach (structure, print_field, (gpointer) pfx);
}
}
#if 0
static void
print_formats (const GstFormat * formats)
{
while (formats && *formats) {
const GstFormatDefinition *definition;
definition = gst_format_get_details (*formats);
if (definition)
n_print ("\t\t(%d):\t%s (%s)\n", *formats,
definition->nick, definition->description);
else
n_print ("\t\t(%d):\tUnknown format\n", *formats);
formats++;
}
}
#endif
static void
print_query_types (const GstQueryType * types)
{
while (types && *types) {
const GstQueryTypeDefinition *definition;
definition = gst_query_type_get_details (*types);
if (definition)
n_print ("\t\t(%d):\t%s (%s)\n", *types,
definition->nick, definition->description);
else
n_print ("\t\t(%d):\tUnknown query format\n", *types);
types++;
}
}
#if 0
static void
print_event_masks (const GstEventMask * masks)
{
GType event_type;
GEnumClass *klass;
GType event_flags;
GFlagsClass *flags_class = NULL;
event_type = gst_event_type_get_type ();
klass = (GEnumClass *) g_type_class_ref (event_type);
while (masks && masks->type) {
GEnumValue *value;
gint flags = 0, index = 0;
switch (masks->type) {
case GST_EVENT_SEEK:
flags = masks->flags;
event_flags = gst_seek_type_get_type ();
flags_class = (GFlagsClass *) g_type_class_ref (event_flags);
break;
default:
break;
}
value = g_enum_get_value (klass, masks->type);
g_print ("\t\t%s ", value->value_nick);
while (flags) {
GFlagsValue *value;
if (flags & 1) {
value = g_flags_get_first_value (flags_class, 1 << index);
if (value)
g_print ("| %s ", value->value_nick);
else
g_print ("| ? ");
}
flags >>= 1;
index++;
}
g_print ("\n");
masks++;
}
}
#endif
static const char *
get_rank_name (char *s, gint rank)
{
static const int ranks[4] = {
GST_RANK_NONE, GST_RANK_MARGINAL, GST_RANK_SECONDARY, GST_RANK_PRIMARY
};
static const char *rank_names[4] = { "none", "marginal", "secondary",
"primary"
};
int i;
int best_i;
best_i = 0;
for (i = 0; i < 4; i++) {
if (rank == ranks[i])
return rank_names[i];
if (abs (rank - ranks[i]) < abs (rank - ranks[best_i])) {
best_i = i;
}
}
sprintf (s, "%s %c %d", rank_names[best_i],
(rank - ranks[best_i] > 0) ? '+' : '-', abs (ranks[best_i] - rank));
return s;
}
static gboolean
print_factory_details_meta_data (GQuark field_id, const GValue * value,
gpointer user_data)
{
gchar *val = g_strdup_value_contents (value);
gchar *key = g_strdup (g_quark_to_string (field_id));
key[0] = g_ascii_toupper (key[0]);
n_print (" %s:\t\t%s\n", key, val);
g_free (val);
g_free (key);
return TRUE;
}
static void
print_factory_details_info (GstElementFactory * factory)
{
char s[20];
n_print ("Factory Details:\n");
n_print (" Long name:\t%s\n", factory->details.longname);
n_print (" Class:\t%s\n", factory->details.klass);
n_print (" Description:\t%s\n", factory->details.description);
n_print (" Author(s):\t%s\n", factory->details.author);
n_print (" Rank:\t\t%s (%d)\n",
get_rank_name (s, GST_PLUGIN_FEATURE (factory)->rank),
GST_PLUGIN_FEATURE (factory)->rank);
if (factory->meta_data != NULL) {
gst_structure_foreach ((GstStructure *) factory->meta_data,
print_factory_details_meta_data, NULL);
}
n_print ("\n");
}
static void
print_hierarchy (GType type, gint level, gint * maxlevel)
{
GType parent;
gint i;
parent = g_type_parent (type);
*maxlevel = *maxlevel + 1;
level++;
if (parent)
print_hierarchy (parent, level, maxlevel);
if (_name)
g_print ("%s", _name);
for (i = 1; i < *maxlevel - level; i++)
g_print (" ");
if (*maxlevel - level)
g_print (" +----");
g_print ("%s\n", g_type_name (type));
if (level == 1)
n_print ("\n");
}
static void
print_interfaces (GType type)
{
guint n_ifaces;
GType *iface, *ifaces = g_type_interfaces (type, &n_ifaces);
if (ifaces) {
if (n_ifaces) {
if (_name)
g_print ("%s", _name);
g_print (_("Implemented Interfaces:\n"));
iface = ifaces;
while (*iface) {
if (_name)
g_print ("%s", _name);
g_print (" %s\n", g_type_name (*iface));
iface++;
}
if (_name)
g_print ("%s", _name);
g_print ("\n");
}
g_free (ifaces);
}
}
static gchar *
flags_to_string (GFlagsValue * vals, guint flags)
{
GString *s = NULL;
guint flags_left, i;
/* first look for an exact match and count the number of values */
for (i = 0; vals[i].value_name != NULL; ++i) {
if (vals[i].value == flags)
return g_strdup (vals[i].value_nick);
}
s = g_string_new (NULL);
/* we assume the values are sorted from lowest to highest value */
flags_left = flags;
while (i > 0) {
--i;
if (vals[i].value != 0 && (flags_left & vals[i].value) == vals[i].value) {
if (s->len > 0)
g_string_append (s, " | ");
g_string_append (s, vals[i].value_nick);
flags_left -= vals[i].value;
if (flags_left == 0)
break;
}
}
if (s->len == 0)
g_string_assign (s, "(none)");
return g_string_free (s, FALSE);
}
#define KNOWN_PARAM_FLAGS \
(G_PARAM_CONSTRUCT | G_PARAM_CONSTRUCT_ONLY | \
G_PARAM_LAX_VALIDATION | G_PARAM_STATIC_STRINGS | \
G_PARAM_READABLE | G_PARAM_WRITABLE | GST_PARAM_CONTROLLABLE | \
GST_PARAM_MUTABLE_PLAYING | GST_PARAM_MUTABLE_PAUSED | \
GST_PARAM_MUTABLE_READY)
static void
print_element_properties_info (GstElement * element)
{
GParamSpec **property_specs;
guint num_properties, i;
gboolean readable;
gboolean first_flag;
property_specs = g_object_class_list_properties
(G_OBJECT_GET_CLASS (element), &num_properties);
n_print ("\n");
n_print ("Element Properties:\n");
for (i = 0; i < num_properties; i++) {
GValue value = { 0, };
GParamSpec *param = property_specs[i];
readable = FALSE;
g_value_init (&value, param->value_type);
n_print (" %-20s: %s\n", g_param_spec_get_name (param),
g_param_spec_get_blurb (param));
first_flag = TRUE;
n_print ("%-23.23s flags: ", "");
if (param->flags & G_PARAM_READABLE) {
g_object_get_property (G_OBJECT (element), param->name, &value);
readable = TRUE;
g_print ("%s%s", (first_flag) ? "" : ", ", _("readable"));
first_flag = FALSE;
}
if (param->flags & G_PARAM_WRITABLE) {
g_print ("%s%s", (first_flag) ? "" : ", ", _("writable"));
first_flag = FALSE;
}
if (param->flags & GST_PARAM_CONTROLLABLE) {
g_print (", %s", _("controllable"));
first_flag = FALSE;
}
if (param->flags & GST_PARAM_MUTABLE_PLAYING) {
g_print (", %s", _("changeable in NULL, READY, PAUSED or PLAYING state"));
} else if (param->flags & GST_PARAM_MUTABLE_PAUSED) {
g_print (", %s", _("changeable only in NULL, READY or PAUSED state"));
} else if (param->flags & GST_PARAM_MUTABLE_READY) {
g_print (", %s", _("changeable only in NULL or READY state"));
}
if (param->flags & ~KNOWN_PARAM_FLAGS) {
g_print ("%s0x%0x", (first_flag) ? "" : ", ",
param->flags & ~KNOWN_PARAM_FLAGS);
}
n_print ("\n");
switch (G_VALUE_TYPE (&value)) {
case G_TYPE_STRING:
{
GParamSpecString *pstring = G_PARAM_SPEC_STRING (param);
n_print ("%-23.23s String. ", "");
if (pstring->default_value == NULL)
g_print ("Default: null ");
else
g_print ("Default: \"%s\" ", pstring->default_value);
if (readable) {
const char *string_val = g_value_get_string (&value);
if (string_val == NULL)
g_print ("Current: null");
else
g_print ("Current: \"%s\"", string_val);
}
break;
}
case G_TYPE_BOOLEAN:
{
GParamSpecBoolean *pboolean = G_PARAM_SPEC_BOOLEAN (param);
n_print ("%-23.23s Boolean. ", "");
g_print ("Default: %s ", (pboolean->default_value ? "true" : "false"));
if (readable)
g_print ("Current: %s",
(g_value_get_boolean (&value) ? "true" : "false"));
break;
}
case G_TYPE_ULONG:
{
GParamSpecULong *pulong = G_PARAM_SPEC_ULONG (param);
n_print ("%-23.23s Unsigned Long. ", "");
g_print ("Range: %lu - %lu Default: %lu ",
pulong->minimum, pulong->maximum, pulong->default_value);
if (readable)
g_print ("Current: %lu", g_value_get_ulong (&value));
break;
}
case G_TYPE_LONG:
{
GParamSpecLong *plong = G_PARAM_SPEC_LONG (param);
n_print ("%-23.23s Long. ", "");
g_print ("Range: %ld - %ld Default: %ld ",
plong->minimum, plong->maximum, plong->default_value);
if (readable)
g_print ("Current: %ld", g_value_get_long (&value));
break;
}
case G_TYPE_UINT:
{
GParamSpecUInt *puint = G_PARAM_SPEC_UINT (param);
n_print ("%-23.23s Unsigned Integer. ", "");
g_print ("Range: %u - %u Default: %u ",
puint->minimum, puint->maximum, puint->default_value);
if (readable)
g_print ("Current: %u", g_value_get_uint (&value));
break;
}
case G_TYPE_INT:
{
GParamSpecInt *pint = G_PARAM_SPEC_INT (param);
n_print ("%-23.23s Integer. ", "");
g_print ("Range: %d - %d Default: %d ",
pint->minimum, pint->maximum, pint->default_value);
if (readable)
g_print ("Current: %d", g_value_get_int (&value));
break;
}
case G_TYPE_UINT64:
{
GParamSpecUInt64 *puint64 = G_PARAM_SPEC_UINT64 (param);
n_print ("%-23.23s Unsigned Integer64. ", "");
g_print ("Range: %" G_GUINT64_FORMAT " - %" G_GUINT64_FORMAT
" Default: %" G_GUINT64_FORMAT " ",
puint64->minimum, puint64->maximum, puint64->default_value);
if (readable)
g_print ("Current: %" G_GUINT64_FORMAT, g_value_get_uint64 (&value));
break;
}
case G_TYPE_INT64:
{
GParamSpecInt64 *pint64 = G_PARAM_SPEC_INT64 (param);
n_print ("%-23.23s Integer64. ", "");
g_print ("Range: %" G_GINT64_FORMAT " - %" G_GINT64_FORMAT
" Default: %" G_GINT64_FORMAT " ",
pint64->minimum, pint64->maximum, pint64->default_value);
if (readable)
g_print ("Current: %" G_GINT64_FORMAT, g_value_get_int64 (&value));
break;
}
case G_TYPE_FLOAT:
{
GParamSpecFloat *pfloat = G_PARAM_SPEC_FLOAT (param);
n_print ("%-23.23s Float. ", "");
g_print ("Range: %15.7g - %15.7g Default: %15.7g ",
pfloat->minimum, pfloat->maximum, pfloat->default_value);
if (readable)
g_print ("Current: %15.7g", g_value_get_float (&value));
break;
}
case G_TYPE_DOUBLE:
{
GParamSpecDouble *pdouble = G_PARAM_SPEC_DOUBLE (param);
n_print ("%-23.23s Double. ", "");
g_print ("Range: %15.7g - %15.7g Default: %15.7g ",
pdouble->minimum, pdouble->maximum, pdouble->default_value);
if (readable)
g_print ("Current: %15.7g", g_value_get_double (&value));
break;
}
default:
if (param->value_type == GST_TYPE_CAPS) {
const GstCaps *caps = gst_value_get_caps (&value);
if (!caps)
n_print ("%-23.23s Caps (NULL)", "");
else {
print_caps (caps, " ");
}
} else if (G_IS_PARAM_SPEC_ENUM (param)) {
GParamSpecEnum *penum = G_PARAM_SPEC_ENUM (param);
GEnumValue *values;
guint j = 0;
gint enum_value;
const gchar *def_val_nick = "", *cur_val_nick = "";
values = G_ENUM_CLASS (g_type_class_ref (param->value_type))->values;
enum_value = g_value_get_enum (&value);
while (values[j].value_name) {
if (values[j].value == enum_value)
cur_val_nick = values[j].value_nick;
if (values[j].value == penum->default_value)
def_val_nick = values[j].value_nick;
j++;
}
n_print
("%-23.23s Enum \"%s\" Default: %d, \"%s\" Current: %d, \"%s\"",
"", g_type_name (G_VALUE_TYPE (&value)), penum->default_value,
def_val_nick, enum_value, cur_val_nick);
j = 0;
while (values[j].value_name) {
g_print ("\n");
if (_name)
g_print ("%s", _name);
g_print ("%-23.23s (%d): %-16s - %s", "",
values[j].value, values[j].value_nick, values[j].value_name);
j++;
}
/* g_type_class_unref (ec); */
} else if (G_IS_PARAM_SPEC_FLAGS (param)) {
GParamSpecFlags *pflags = G_PARAM_SPEC_FLAGS (param);
GFlagsValue *vals;
gchar *cur, *def;
vals = pflags->flags_class->values;
cur = flags_to_string (vals, g_value_get_flags (&value));
def = flags_to_string (vals, pflags->default_value);
n_print
("%-23.23s Flags \"%s\" Default: 0x%08x, \"%s\" Current: 0x%08x, \"%s\"",
"", g_type_name (G_VALUE_TYPE (&value)), pflags->default_value,
def, g_value_get_flags (&value), cur);
while (vals[0].value_name) {
g_print ("\n");
if (_name)
g_print ("%s", _name);
g_print ("%-23.23s (0x%08x): %-16s - %s", "",
vals[0].value, vals[0].value_nick, vals[0].value_name);
++vals;
}
g_free (cur);
g_free (def);
} else if (G_IS_PARAM_SPEC_OBJECT (param)) {
n_print ("%-23.23s Object of type \"%s\"", "",
g_type_name (param->value_type));
} else if (G_IS_PARAM_SPEC_BOXED (param)) {
n_print ("%-23.23s Boxed pointer of type \"%s\"", "",
g_type_name (param->value_type));
} else if (G_IS_PARAM_SPEC_POINTER (param)) {
if (param->value_type != G_TYPE_POINTER) {
n_print ("%-23.23s Pointer of type \"%s\".", "",
g_type_name (param->value_type));
} else {
n_print ("%-23.23s Pointer.", "");
}
} else if (param->value_type == G_TYPE_VALUE_ARRAY) {
GParamSpecValueArray *pvarray = G_PARAM_SPEC_VALUE_ARRAY (param);
if (pvarray->element_spec) {
n_print ("%-23.23s Array of GValues of type \"%s\"", "",
g_type_name (pvarray->element_spec->value_type));
} else {
n_print ("%-23.23s Array of GValues", "");
}
} else if (GST_IS_PARAM_SPEC_FRACTION (param)) {
GstParamSpecFraction *pfraction = GST_PARAM_SPEC_FRACTION (param);
n_print ("%-23.23s Fraction. ", "");
g_print ("Range: %d/%d - %d/%d Default: %d/%d ",
pfraction->min_num, pfraction->min_den,
pfraction->max_num, pfraction->max_den,
pfraction->def_num, pfraction->def_den);
if (readable)
g_print ("Current: %d/%d",
gst_value_get_fraction_numerator (&value),
gst_value_get_fraction_denominator (&value));
} else if (GST_IS_PARAM_SPEC_MINI_OBJECT (param)) {
n_print ("%-23.23s MiniObject of type \"%s\"", "",
g_type_name (param->value_type));
} else {
n_print ("%-23.23s Unknown type %ld \"%s\"", "", param->value_type,
g_type_name (param->value_type));
}
break;
}
if (!readable)
g_print (" Write only\n");
else
g_print ("\n");
g_value_reset (&value);
}
if (num_properties == 0)
n_print (" none\n");
g_free (property_specs);
}
static void
print_pad_templates_info (GstElement * element, GstElementFactory * factory)
{
GstElementClass *gstelement_class;
const GList *pads;
GstStaticPadTemplate *padtemplate;
n_print ("Pad Templates:\n");
if (!factory->numpadtemplates) {
n_print (" none\n");
return;
}
gstelement_class = GST_ELEMENT_CLASS (G_OBJECT_GET_CLASS (element));
pads = factory->staticpadtemplates;
while (pads) {
padtemplate = (GstStaticPadTemplate *) (pads->data);
pads = g_list_next (pads);
if (padtemplate->direction == GST_PAD_SRC)
n_print (" SRC template: '%s'\n", padtemplate->name_template);
else if (padtemplate->direction == GST_PAD_SINK)
n_print (" SINK template: '%s'\n", padtemplate->name_template);
else
n_print (" UNKNOWN!!! template: '%s'\n", padtemplate->name_template);
if (padtemplate->presence == GST_PAD_ALWAYS)
n_print (" Availability: Always\n");
else if (padtemplate->presence == GST_PAD_SOMETIMES)
n_print (" Availability: Sometimes\n");
else if (padtemplate->presence == GST_PAD_REQUEST) {
n_print (" Availability: On request\n");
n_print (" Has request_new_pad() function: %s\n",
GST_DEBUG_FUNCPTR_NAME (gstelement_class->request_new_pad));
} else
n_print (" Availability: UNKNOWN!!!\n");
if (padtemplate->static_caps.string) {
n_print (" Capabilities:\n");
print_caps (gst_static_caps_get (&padtemplate->static_caps), " ");
}
n_print ("\n");
}
}
static void
print_element_flag_info (GstElement * element)
{
gboolean have_flags = FALSE;
n_print ("\n");
n_print ("Element Flags:\n");
if (!have_flags)
n_print (" no flags set\n");
if (GST_IS_BIN (element)) {
n_print ("\n");
n_print ("Bin Flags:\n");
if (!have_flags)
n_print (" no flags set\n");
}
}
static void
print_implementation_info (GstElement * element)
{
GstObjectClass *gstobject_class;
GstElementClass *gstelement_class;
gstobject_class = GST_OBJECT_CLASS (G_OBJECT_GET_CLASS (element));
gstelement_class = GST_ELEMENT_CLASS (G_OBJECT_GET_CLASS (element));
n_print ("\n");
n_print ("Element Implementation:\n");
n_print (" Has change_state() function: %s\n",
GST_DEBUG_FUNCPTR_NAME (gstelement_class->change_state));
#ifndef GST_DISABLE_LOADSAVE
n_print (" Has custom save_thyself() function: %s\n",
GST_DEBUG_FUNCPTR_NAME (gstobject_class->save_thyself));
n_print (" Has custom restore_thyself() function: %s\n",
GST_DEBUG_FUNCPTR_NAME (gstobject_class->restore_thyself));
#endif
}
static void
print_clocking_info (GstElement * element)
{
if (!gst_element_requires_clock (element) &&
!(gst_element_provides_clock (element) &&
gst_element_get_clock (element))) {
n_print ("\n");
n_print ("Element has no clocking capabilities.");
return;
}
n_print ("\n");
n_print ("Clocking Interaction:\n");
if (gst_element_requires_clock (element)) {
n_print (" element requires a clock\n");
}
if (gst_element_provides_clock (element)) {
GstClock *clock;
clock = gst_element_get_clock (element);
if (clock)
n_print (" element provides a clock: %s\n", GST_OBJECT_NAME (clock));
else
n_print (" element is supposed to provide a clock but returned NULL\n");
}
}
static void
print_index_info (GstElement * element)
{
if (gst_element_is_indexable (element)) {
n_print ("\n");
n_print ("Indexing capabilities:\n");
n_print (" element can do indexing\n");
} else {
n_print ("\n");
n_print ("Element has no indexing capabilities.\n");
}
}
static void
print_uri_handler_info (GstElement * element)
{
if (GST_IS_URI_HANDLER (element)) {
const gchar *uri_type;
gchar **uri_protocols;
if (gst_uri_handler_get_uri_type (GST_URI_HANDLER (element)) == GST_URI_SRC)
uri_type = "source";
else if (gst_uri_handler_get_uri_type (GST_URI_HANDLER (element)) ==
GST_URI_SINK)
uri_type = "sink";
else
uri_type = "unknown";
uri_protocols = gst_uri_handler_get_protocols (GST_URI_HANDLER (element));
n_print ("\n");
n_print ("URI handling capabilities:\n");
n_print (" Element can act as %s.\n", uri_type);
if (uri_protocols && *uri_protocols) {
n_print (" Supported URI protocols:\n");
for (; *uri_protocols != NULL; uri_protocols++)
n_print (" %s\n", *uri_protocols);
} else {
n_print (" No supported URI protocols\n");
}
} else {
n_print ("Element has no URI handling capabilities.\n");
}
}
static void
print_pad_info (GstElement * element)
{
const GList *pads;
GstPad *pad;
n_print ("\n");
n_print ("Pads:\n");
if (!element->numpads) {
n_print (" none\n");
return;
}
pads = element->pads;
while (pads) {
gchar *name;
pad = GST_PAD (pads->data);
pads = g_list_next (pads);
n_print ("");
name = gst_pad_get_name (pad);
if (gst_pad_get_direction (pad) == GST_PAD_SRC)
g_print (" SRC: '%s'", name);
else if (gst_pad_get_direction (pad) == GST_PAD_SINK)
g_print (" SINK: '%s'", name);
else
g_print (" UNKNOWN!!!: '%s'", name);
g_free (name);
g_print ("\n");
n_print (" Implementation:\n");
if (pad->chainfunc)
n_print (" Has chainfunc(): %s\n",
GST_DEBUG_FUNCPTR_NAME (pad->chainfunc));
if (pad->getrangefunc)
n_print (" Has getrangefunc(): %s\n",
GST_DEBUG_FUNCPTR_NAME (pad->getrangefunc));
if (pad->eventfunc != gst_pad_event_default)
n_print (" Has custom eventfunc(): %s\n",
GST_DEBUG_FUNCPTR_NAME (pad->eventfunc));
if (pad->queryfunc != gst_pad_query_default)
n_print (" Has custom queryfunc(): %s\n",
GST_DEBUG_FUNCPTR_NAME (pad->queryfunc));
if (pad->querytypefunc != gst_pad_get_query_types_default) {
const GstQueryType *query_types = gst_pad_get_query_types (pad);
if (query_types) {
n_print (" Provides query types:\n");
print_query_types (query_types);
}
}
if (pad->iterintlinkfunc != gst_pad_iterate_internal_links_default)
n_print (" Has custom iterintlinkfunc(): %s\n",
GST_DEBUG_FUNCPTR_NAME (pad->iterintlinkfunc));
if (pad->bufferallocfunc)
n_print (" Has bufferallocfunc(): %s\n",
GST_DEBUG_FUNCPTR_NAME (pad->bufferallocfunc));
if (pad->getcapsfunc)
n_print (" Has getcapsfunc(): %s\n",
GST_DEBUG_FUNCPTR_NAME (pad->getcapsfunc));
if (pad->setcapsfunc)
n_print (" Has setcapsfunc(): %s\n",
GST_DEBUG_FUNCPTR_NAME (pad->setcapsfunc));
/* gst_pad_acceptcaps_default is static :/ */
if (pad->acceptcapsfunc)
n_print (" Has acceptcapsfunc(): %s\n",
GST_DEBUG_FUNCPTR_NAME (pad->acceptcapsfunc));
if (pad->fixatecapsfunc)
n_print (" Has fixatecapsfunc(): %s\n",
GST_DEBUG_FUNCPTR_NAME (pad->fixatecapsfunc));
if (pad->padtemplate)
n_print (" Pad Template: '%s'\n", pad->padtemplate->name_template);
if (pad->caps) {
n_print (" Capabilities:\n");
print_caps (pad->caps, " ");
}
}
}
static gboolean
has_sometimes_template (GstElement * element)
{
GstElementClass *klass = GST_ELEMENT_GET_CLASS (element);
GList *l;
for (l = klass->padtemplates; l != NULL; l = l->next) {
if (GST_PAD_TEMPLATE (l->data)->presence == GST_PAD_SOMETIMES)
return TRUE;
}
return FALSE;
}
static void
print_signal_info (GstElement * element)
{
/* Signals/Actions Block */
guint *signals;
guint nsignals;
gint i = 0, j, k;
GSignalQuery *query = NULL;
GType type;
GSList *found_signals, *l;
for (k = 0; k < 2; k++) {
found_signals = NULL;
/* For elements that have sometimes pads, also list a few useful GstElement
* signals. Put these first, so element-specific ones come later. */
if (k == 0 && has_sometimes_template (element)) {
query = g_new0 (GSignalQuery, 1);
g_signal_query (g_signal_lookup ("pad-added", GST_TYPE_ELEMENT), query);
found_signals = g_slist_append (found_signals, query);
query = g_new0 (GSignalQuery, 1);
g_signal_query (g_signal_lookup ("pad-removed", GST_TYPE_ELEMENT), query);
found_signals = g_slist_append (found_signals, query);
query = g_new0 (GSignalQuery, 1);
g_signal_query (g_signal_lookup ("no-more-pads", GST_TYPE_ELEMENT),
query);
found_signals = g_slist_append (found_signals, query);
}
for (type = G_OBJECT_TYPE (element); type; type = g_type_parent (type)) {
if (type == GST_TYPE_ELEMENT || type == GST_TYPE_OBJECT)
break;
if (type == GST_TYPE_BIN && G_OBJECT_TYPE (element) != GST_TYPE_BIN)
continue;
signals = g_signal_list_ids (type, &nsignals);
for (i = 0; i < nsignals; i++) {
query = g_new0 (GSignalQuery, 1);
g_signal_query (signals[i], query);
if ((k == 0 && !(query->signal_flags & G_SIGNAL_ACTION)) ||
(k == 1 && (query->signal_flags & G_SIGNAL_ACTION)))
found_signals = g_slist_append (found_signals, query);
else
g_free (query);
}
g_free (signals);
signals = NULL;
}
if (found_signals) {
n_print ("\n");
if (k == 0)
n_print ("Element Signals:\n");
else
n_print ("Element Actions:\n");
} else {
continue;
}
for (l = found_signals; l; l = l->next) {
gchar *indent;
int indent_len;
query = (GSignalQuery *) l->data;
indent_len = strlen (query->signal_name) +
strlen (g_type_name (query->return_type)) + 24;
indent = g_new0 (gchar, indent_len + 1);
memset (indent, ' ', indent_len);
n_print (" \"%s\" : %s user_function (%s* object",
query->signal_name,
g_type_name (query->return_type), g_type_name (type));
for (j = 0; j < query->n_params; j++) {
if (_name)
g_print ("%s", _name);
if (G_TYPE_IS_FUNDAMENTAL (query->param_types[j])) {
g_print (",\n%s%s arg%d", indent,
g_type_name (query->param_types[j]), j);
} else if (G_TYPE_IS_ENUM (query->param_types[j])) {
g_print (",\n%s%s arg%d", indent,
g_type_name (query->param_types[j]), j);
} else {
g_print (",\n%s%s* arg%d", indent,
g_type_name (query->param_types[j]), j);
}
}
if (k == 0) {
if (_name)
g_print ("%s", _name);
g_print (",\n%sgpointer user_data);\n", indent);
} else
g_print (");\n");
g_free (indent);
}
if (found_signals) {
g_slist_foreach (found_signals, (GFunc) g_free, NULL);
g_slist_free (found_signals);
}
}
}
static void
print_children_info (GstElement * element)
{
GList *children;
if (!GST_IS_BIN (element))
return;
children = (GList *) GST_BIN (element)->children;
if (children) {
n_print ("\n");
g_print ("Children:\n");
}
while (children) {
n_print (" %s\n", GST_ELEMENT_NAME (GST_ELEMENT (children->data)));
children = g_list_next (children);
}
}
static void
print_blacklist (void)
{
GList *plugins, *cur;
gint count = 0;
g_print ("%s\n", _("Blacklisted files:"));
plugins = gst_default_registry_get_plugin_list ();
for (cur = plugins; cur != NULL; cur = g_list_next (cur)) {
GstPlugin *plugin = (GstPlugin *) (cur->data);
if (plugin->flags & GST_PLUGIN_FLAG_BLACKLISTED) {
g_print (" %s\n", plugin->desc.name);
count++;
}
}
g_print ("\n");
g_print (_("Total count: "));
g_print (ngettext ("%d blacklisted file", "%d blacklisted files", count),
count);
g_print ("\n");
gst_plugin_list_free (plugins);
}
static void
print_element_list (gboolean print_all)
{
int plugincount = 0, featurecount = 0, blacklistcount = 0;
GList *plugins, *orig_plugins;
orig_plugins = plugins = gst_default_registry_get_plugin_list ();
while (plugins) {
GList *features, *orig_features;
GstPlugin *plugin;
plugin = (GstPlugin *) (plugins->data);
plugins = g_list_next (plugins);
plugincount++;
if (plugin->flags & GST_PLUGIN_FLAG_BLACKLISTED) {
blacklistcount++;
continue;
}
orig_features = features =
gst_registry_get_feature_list_by_plugin (gst_registry_get_default (),
plugin->desc.name);
while (features) {
GstPluginFeature *feature;
if (G_UNLIKELY (features->data == NULL))
goto next;
feature = GST_PLUGIN_FEATURE (features->data);
featurecount++;
if (GST_IS_ELEMENT_FACTORY (feature)) {
GstElementFactory *factory;
factory = GST_ELEMENT_FACTORY (feature);
if (print_all)
print_element_info (factory, TRUE);
else
g_print ("%s: %s: %s\n", plugin->desc.name,
GST_PLUGIN_FEATURE_NAME (factory),
gst_element_factory_get_longname (factory));
} else if (GST_IS_INDEX_FACTORY (feature)) {
GstIndexFactory *factory;
factory = GST_INDEX_FACTORY (feature);
if (!print_all)
g_print ("%s: %s: %s\n", plugin->desc.name,
GST_PLUGIN_FEATURE_NAME (factory), factory->longdesc);
} else if (GST_IS_TYPE_FIND_FACTORY (feature)) {
GstTypeFindFactory *factory;
factory = GST_TYPE_FIND_FACTORY (feature);
if (!print_all)
g_print ("%s: %s: ", plugin->desc.name,
gst_plugin_feature_get_name (feature));
if (factory->extensions) {
guint i = 0;
while (factory->extensions[i]) {
if (!print_all)
g_print ("%s%s", i > 0 ? ", " : "", factory->extensions[i]);
i++;
}
if (!print_all)
g_print ("\n");
} else {
if (!print_all)
g_print ("no extensions\n");
}
} else {
if (!print_all)
n_print ("%s: %s (%s)\n", plugin->desc.name,
GST_PLUGIN_FEATURE_NAME (feature),
g_type_name (G_OBJECT_TYPE (feature)));
}
next:
features = g_list_next (features);
}
gst_plugin_feature_list_free (orig_features);
}
gst_plugin_list_free (orig_plugins);
g_print ("\n");
g_print (_("Total count: "));
g_print (ngettext ("%d plugin", "%d plugins", plugincount), plugincount);
if (blacklistcount) {
g_print (" (");
g_print (ngettext ("%d blacklist entry", "%d blacklist entries",
blacklistcount), blacklistcount);
g_print (" not shown)");
}
g_print (", ");
g_print (ngettext ("%d feature", "%d features", featurecount), featurecount);
g_print ("\n");
}
static void
print_all_uri_handlers (void)
{
GList *plugins, *p, *features, *f;
plugins = gst_default_registry_get_plugin_list ();
for (p = plugins; p; p = p->next) {
GstPlugin *plugin = (GstPlugin *) (p->data);
features =
gst_registry_get_feature_list_by_plugin (gst_registry_get_default (),
plugin->desc.name);
for (f = features; f; f = f->next) {
GstPluginFeature *feature = GST_PLUGIN_FEATURE (f->data);
if (GST_IS_ELEMENT_FACTORY (feature)) {
GstElementFactory *factory;
GstElement *element;
factory = GST_ELEMENT_FACTORY (gst_plugin_feature_load (feature));
if (!factory) {
g_print ("element plugin %s couldn't be loaded\n", plugin->desc.name);
continue;
}
element = gst_element_factory_create (factory, NULL);
if (!element) {
g_print ("couldn't construct element for %s for some reason\n",
GST_OBJECT_NAME (factory));
gst_object_unref (factory);
continue;
}
if (GST_IS_URI_HANDLER (element)) {
const gchar *dir;
gchar **uri_protocols, *joined;
switch (gst_uri_handler_get_uri_type (GST_URI_HANDLER (element))) {
case GST_URI_SRC:
dir = "read";
break;
case GST_URI_SINK:
dir = "write";
break;
default:
dir = "unknown";
break;
}
uri_protocols =
gst_uri_handler_get_protocols (GST_URI_HANDLER (element));
joined = g_strjoinv (", ", uri_protocols);
g_print ("%s (%s, rank %u): %s\n",
gst_plugin_feature_get_name (GST_PLUGIN_FEATURE (factory)), dir,
gst_plugin_feature_get_rank (GST_PLUGIN_FEATURE (factory)),
joined);
g_free (joined);
}
gst_object_unref (element);
gst_object_unref (factory);
}
}
gst_plugin_feature_list_free (features);
}
gst_plugin_list_free (plugins);
}
static void
print_plugin_info (GstPlugin * plugin)
{
n_print ("Plugin Details:\n");
n_print (" Name:\t\t\t%s\n", plugin->desc.name);
n_print (" Description:\t\t%s\n", plugin->desc.description);
n_print (" Filename:\t\t%s\n",
plugin->filename ? plugin->filename : "(null)");
n_print (" Version:\t\t%s\n", plugin->desc.version);
n_print (" License:\t\t%s\n", plugin->desc.license);
n_print (" Source module:\t%s\n", plugin->desc.source);
if (plugin->desc.release_datetime != NULL) {
const gchar *tz = "(UTC)";
gchar *str, *sep;
/* may be: YYYY-MM-DD or YYYY-MM-DDTHH:MMZ */
/* YYYY-MM-DDTHH:MMZ => YYYY-MM-DD HH:MM (UTC) */
str = g_strdup (plugin->desc.release_datetime);
sep = strstr (str, "T");
if (sep != NULL) {
*sep = ' ';
sep = strstr (sep + 1, "Z");
if (sep != NULL)
*sep = ' ';
} else {
tz = "";
}
n_print (" Source release date:\t%s%s\n", str, tz);
g_free (str);
}
n_print (" Binary package:\t%s\n", plugin->desc.package);
n_print (" Origin URL:\t\t%s\n", plugin->desc.origin);
n_print ("\n");
}
static void
print_plugin_features (GstPlugin * plugin)
{
GList *features;
gint num_features = 0;
gint num_elements = 0;
gint num_typefinders = 0;
gint num_indexes = 0;
gint num_other = 0;
features =
gst_registry_get_feature_list_by_plugin (gst_registry_get_default (),
plugin->desc.name);
while (features) {
GstPluginFeature *feature;
feature = GST_PLUGIN_FEATURE (features->data);
if (GST_IS_ELEMENT_FACTORY (feature)) {
GstElementFactory *factory;
factory = GST_ELEMENT_FACTORY (feature);
n_print (" %s: %s\n", GST_PLUGIN_FEATURE_NAME (factory),
gst_element_factory_get_longname (factory));
num_elements++;
} else if (GST_IS_INDEX_FACTORY (feature)) {
GstIndexFactory *factory;
factory = GST_INDEX_FACTORY (feature);
n_print (" %s: %s\n", GST_OBJECT_NAME (factory), factory->longdesc);
num_indexes++;
} else if (GST_IS_TYPE_FIND_FACTORY (feature)) {
GstTypeFindFactory *factory;
factory = GST_TYPE_FIND_FACTORY (feature);
if (factory->extensions) {
guint i = 0;
g_print ("%s: %s: ", plugin->desc.name,
gst_plugin_feature_get_name (feature));
while (factory->extensions[i]) {
g_print ("%s%s", i > 0 ? ", " : "", factory->extensions[i]);
i++;
}
g_print ("\n");
} else
g_print ("%s: %s: no extensions\n", plugin->desc.name,
gst_plugin_feature_get_name (feature));
num_typefinders++;
} else if (feature) {
n_print (" %s (%s)\n", gst_object_get_name (GST_OBJECT (feature)),
g_type_name (G_OBJECT_TYPE (feature)));
num_other++;
}
num_features++;
features = g_list_next (features);
}
n_print ("\n");
n_print (" %d features:\n", num_features);
if (num_elements > 0)
n_print (" +-- %d elements\n", num_elements);
if (num_typefinders > 0)
n_print (" +-- %d typefinders\n", num_typefinders);
if (num_indexes > 0)
n_print (" +-- %d indexes\n", num_indexes);
if (num_other > 0)
n_print (" +-- %d other objects\n", num_other);
n_print ("\n");
}
static int
print_element_features (const gchar * element_name)
{
GstPluginFeature *feature;
/* FIXME implement other pretty print function for these */
feature = gst_default_registry_find_feature (element_name,
GST_TYPE_INDEX_FACTORY);
if (feature) {
n_print ("%s: an index\n", element_name);
return 0;
}
feature = gst_default_registry_find_feature (element_name,
GST_TYPE_TYPE_FIND_FACTORY);
if (feature) {
n_print ("%s: a typefind function\n", element_name);
return 0;
}
return -1;
}
static int
print_element_info (GstElementFactory * factory, gboolean print_names)
{
GstElement *element;
gint maxlevel = 0;
factory =
GST_ELEMENT_FACTORY (gst_plugin_feature_load (GST_PLUGIN_FEATURE
(factory)));
if (!factory) {
g_print ("element plugin couldn't be loaded\n");
return -1;
}
element = gst_element_factory_create (factory, NULL);
if (!element) {
g_print ("couldn't construct element for some reason\n");
return -1;
}
if (print_names)
_name = g_strdup_printf ("%s: ", GST_PLUGIN_FEATURE (factory)->name);
else
_name = NULL;
print_factory_details_info (factory);
if (GST_PLUGIN_FEATURE (factory)->plugin_name) {
GstPlugin *plugin;
plugin = gst_registry_find_plugin (gst_registry_get_default (),
GST_PLUGIN_FEATURE (factory)->plugin_name);
if (plugin) {
print_plugin_info (plugin);
}
}
print_hierarchy (G_OBJECT_TYPE (element), 0, &maxlevel);
print_interfaces (G_OBJECT_TYPE (element));
print_pad_templates_info (element, factory);
print_element_flag_info (element);
print_implementation_info (element);
print_clocking_info (element);
print_index_info (element);
print_uri_handler_info (element);
print_pad_info (element);
print_element_properties_info (element);
print_signal_info (element);
print_children_info (element);
gst_object_unref (element);
gst_object_unref (factory);
g_free (_name);
return 0;
}
static void
print_plugin_automatic_install_info_codecs (GstElementFactory * factory)
{
GstPadDirection direction;
const gchar *type_name;
const gchar *klass;
const GList *static_templates, *l;
GstCaps *caps = NULL;
guint i, num;
klass = gst_element_factory_get_klass (factory);
g_return_if_fail (klass != NULL);
if (strstr (klass, "Demuxer") ||
strstr (klass, "Decoder") ||
strstr (klass, "Depay") || strstr (klass, "Parser")) {
type_name = "decoder";
direction = GST_PAD_SINK;
} else if (strstr (klass, "Muxer") ||
strstr (klass, "Encoder") || strstr (klass, "Pay")) {
type_name = "encoder";
direction = GST_PAD_SRC;
} else {
return;
}
/* decoder/demuxer sink pads should always be static and there should only
* be one, the same applies to encoders/muxers and source pads */
static_templates = gst_element_factory_get_static_pad_templates (factory);
for (l = static_templates; l != NULL; l = l->next) {
GstStaticPadTemplate *tmpl = NULL;
tmpl = (GstStaticPadTemplate *) l->data;
if (tmpl->direction == direction) {
caps = gst_static_pad_template_get_caps (tmpl);
break;
}
}
if (caps == NULL) {
g_printerr ("Couldn't find static pad template for %s '%s'\n",
type_name, GST_PLUGIN_FEATURE_NAME (factory));
return;
}
caps = gst_caps_make_writable (caps);
num = gst_caps_get_size (caps);
for (i = 0; i < num; ++i) {
GstStructure *s;
gchar *s_str;
s = gst_caps_get_structure (caps, i);
/* remove fields that are almost always just MIN-MAX of some sort
* in order to make the caps look less messy */
gst_structure_remove_field (s, "pixel-aspect-ratio");
gst_structure_remove_field (s, "framerate");
gst_structure_remove_field (s, "channels");
gst_structure_remove_field (s, "width");
gst_structure_remove_field (s, "height");
gst_structure_remove_field (s, "rate");
gst_structure_remove_field (s, "depth");
gst_structure_remove_field (s, "clock-rate");
s_str = gst_structure_to_string (s);
g_print ("%s-%s\n", type_name, s_str);
g_free (s_str);
}
gst_caps_unref (caps);
}
static void
print_plugin_automatic_install_info_protocols (GstElementFactory * factory)
{
gchar **protocols, **p;
protocols = gst_element_factory_get_uri_protocols (factory);
if (protocols != NULL && *protocols != NULL) {
switch (gst_element_factory_get_uri_type (factory)) {
case GST_URI_SINK:
for (p = protocols; *p != NULL; ++p)
g_print ("urisink-%s\n", *p);
break;
case GST_URI_SRC:
for (p = protocols; *p != NULL; ++p)
g_print ("urisource-%s\n", *p);
break;
default:
break;
}
g_strfreev (protocols);
}
}
static void
print_plugin_automatic_install_info (GstPlugin * plugin)
{
const gchar *plugin_name;
GList *features, *l;
plugin_name = gst_plugin_get_name (plugin);
/* not interested in typefind factories, only element factories */
features = gst_registry_get_feature_list (gst_registry_get_default (),
GST_TYPE_ELEMENT_FACTORY);
for (l = features; l != NULL; l = l->next) {
GstPluginFeature *feature;
feature = GST_PLUGIN_FEATURE (l->data);
/* only interested in the ones that are in the plugin we just loaded */
if (g_str_equal (plugin_name, feature->plugin_name)) {
GstElementFactory *factory;
g_print ("element-%s\n", gst_plugin_feature_get_name (feature));
factory = GST_ELEMENT_FACTORY (feature);
print_plugin_automatic_install_info_protocols (factory);
print_plugin_automatic_install_info_codecs (factory);
}
}
g_list_foreach (features, (GFunc) gst_object_unref, NULL);
g_list_free (features);
}
static void
print_all_plugin_automatic_install_info (void)
{
GList *plugins, *orig_plugins;
orig_plugins = plugins = gst_default_registry_get_plugin_list ();
while (plugins) {
GstPlugin *plugin;
plugin = (GstPlugin *) (plugins->data);
plugins = g_list_next (plugins);
print_plugin_automatic_install_info (plugin);
}
gst_plugin_list_free (orig_plugins);
}
int
main (int argc, char *argv[])
{
gboolean print_all = FALSE;
gboolean do_print_blacklist = FALSE;
gboolean plugin_name = FALSE;
gboolean print_aii = FALSE;
gboolean uri_handlers = FALSE;
#ifndef GST_DISABLE_OPTION_PARSING
GOptionEntry options[] = {
{"print-all", 'a', 0, G_OPTION_ARG_NONE, &print_all,
N_("Print all elements"), NULL},
{"print-blacklist", 'b', 0, G_OPTION_ARG_NONE, &do_print_blacklist,
N_("Print list of blacklisted files"), NULL},
{"print-plugin-auto-install-info", '\0', 0, G_OPTION_ARG_NONE, &print_aii,
N_("Print a machine-parsable list of features the specified plugin "
"or all plugins provide.\n "
"Useful in connection with external automatic plugin "
"installation mechanisms"), NULL},
{"plugin", '\0', 0, G_OPTION_ARG_NONE, &plugin_name,
N_("List the plugin contents"), NULL},
{"uri-handlers", 'u', 0, G_OPTION_ARG_NONE, &uri_handlers,
N_
("Print supported URI schemes, with the elements that implement them"),
NULL},
GST_TOOLS_GOPTION_VERSION,
{NULL}
};
GOptionContext *ctx;
GError *err = NULL;
#endif
#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-inspect");
#ifndef GST_DISABLE_OPTION_PARSING
ctx = g_option_context_new ("[ELEMENT-NAME | PLUGIN-NAME]");
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)) {
g_print ("Error initializing: %s\n", err->message);
exit (1);
}
g_option_context_free (ctx);
#else
gst_init (&argc, &argv);
#endif
gst_tools_print_version ("gst-inspect");
if (print_all && argc > 1) {
g_print ("-a requires no extra arguments\n");
return 1;
}
if (uri_handlers && argc > 1) {
g_print ("-u requires no extra arguments\n");
exit (1);
}
/* if no arguments, print out list of elements */
if (uri_handlers) {
print_all_uri_handlers ();
} else if (argc == 1 || print_all) {
if (do_print_blacklist)
print_blacklist ();
else {
if (print_aii)
print_all_plugin_automatic_install_info ();
else
print_element_list (print_all);
}
} else {
/* else we try to get a factory */
GstElementFactory *factory;
GstPlugin *plugin;
const char *arg = argv[argc - 1];
int retval;
if (!plugin_name) {
factory = gst_element_factory_find (arg);
/* if there's a factory, print out the info */
if (factory) {
retval = print_element_info (factory, print_all);
gst_object_unref (factory);
} else {
retval = print_element_features (arg);
}
} else {
retval = -1;
}
/* otherwise check if it's a plugin */
if (retval) {
plugin = gst_default_registry_find_plugin (arg);
/* if there is such a plugin, print out info */
if (plugin) {
if (print_aii) {
print_plugin_automatic_install_info (plugin);
} else {
print_plugin_info (plugin);
print_plugin_features (plugin);
}
} else {
GError *error = NULL;
if (g_file_test (arg, G_FILE_TEST_EXISTS)) {
plugin = gst_plugin_load_file (arg, &error);
if (plugin) {
if (print_aii) {
print_plugin_automatic_install_info (plugin);
} else {
print_plugin_info (plugin);
print_plugin_features (plugin);
}
} else {
g_print (_("Could not load plugin file: %s\n"), error->message);
g_error_free (error);
return -1;
}
} else {
g_print (_("No such element or plugin '%s'\n"), arg);
return -1;
}
}
}
}
return 0;
}
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