/* GStreamer * Copyright (C) 1999,2000 Erik Walthinsen * 2000 Wim Taymans * 2004 Thomas Vander Stichele * * 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., 51 Franklin St, Fifth Floor, * Boston, MA 02110-1301, USA. */ #ifdef HAVE_CONFIG_H # include "config.h" #endif /* FIXME 2.0: suppress warnings for deprecated API such as GValueArray * with newer GLib versions (>= 2.31.0) */ #define GLIB_DISABLE_DEPRECATION_WARNINGS #include "tools.h" #include /* for internal Factories */ #include #include #include static char *_name = NULL; static int indent = 0; static int print_element_info (GstPluginFeature * feature, gboolean print_names); static int print_typefind_info (GstPluginFeature * feature, gboolean print_names); static int print_tracer_info (GstPluginFeature * feature, gboolean print_names); #define push_indent() push_indent_n(1) #define pop_indent() push_indent_n(-1) #define pop_indent_n(n) push_indent_n(-n) static void push_indent_n (int n) { g_assert (n > 0 || indent > 0); indent += n; } /* *INDENT-OFF* */ G_GNUC_PRINTF (1, 2) /* *INDENT-ON* */ static void n_print (const char *format, ...) { va_list args; int i; if (_name) g_print ("%s", _name); for (i = 0; i < indent; ++i) g_print (" "); 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); GstCapsFeatures *features = gst_caps_get_features (caps, i); if (features && (gst_caps_features_is_any (features) || !gst_caps_features_is_equal (features, GST_CAPS_FEATURES_MEMORY_SYSTEM_MEMORY))) { gchar *features_string = gst_caps_features_to_string (features); n_print ("%s%s(%s)\n", pfx, gst_structure_get_name (structure), features_string); g_free (features_string); } else { n_print ("%s%s\n", pfx, gst_structure_get_name (structure)); } gst_structure_foreach (structure, print_field, (gpointer) pfx); } } 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 void print_factory_details_info (GstElementFactory * factory) { gchar **keys, **k; GstRank rank; char s[20]; rank = gst_plugin_feature_get_rank (GST_PLUGIN_FEATURE (factory)); n_print ("Factory Details:\n"); push_indent (); n_print ("%-25s%s (%d)\n", "Rank", get_rank_name (s, rank), rank); keys = gst_element_factory_get_metadata_keys (factory); if (keys != NULL) { for (k = keys; *k != NULL; ++k) { const gchar *val; gchar *key = *k; val = gst_element_factory_get_metadata (factory, key); key[0] = g_ascii_toupper (key[0]); n_print ("%-25s%s\n", key, val); } g_strfreev (keys); } pop_indent (); 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) { n_print (_("Implemented Interfaces:\n")); push_indent (); iface = ifaces; while (*iface) { n_print ("%s\n", g_type_name (*iface)); iface++; } pop_indent (); n_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_c (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 | G_PARAM_DEPRECATED | \ GST_PARAM_CONTROLLABLE | GST_PARAM_MUTABLE_PLAYING | \ GST_PARAM_MUTABLE_PAUSED | GST_PARAM_MUTABLE_READY) /* obj will be NULL if we're printing properties of pad template pads */ static void print_object_properties_info (GObject * obj, GObjectClass * obj_class, const gchar * desc) { GParamSpec **property_specs; guint num_properties, i; gboolean readable; gboolean first_flag; property_specs = g_object_class_list_properties (obj_class, &num_properties); n_print ("%s:\n", desc); push_indent (); for (i = 0; i < num_properties; i++) { GValue value = { 0, }; GParamSpec *param = property_specs[i]; GType owner_type = param->owner_type; /* We're printing pad properties */ if (obj == NULL && (owner_type == G_TYPE_OBJECT || owner_type == GST_TYPE_OBJECT || owner_type == GST_TYPE_PAD)) continue; 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)); push_indent_n (11); first_flag = TRUE; n_print ("flags: "); readable = ! !(param->flags & G_PARAM_READABLE); if (readable && obj != NULL) { g_object_get_property (obj, param->name, &value); } else { /* if we can't read the property value, assume it's set to the default * (which might not be entirely true for sub-classes, but that's an * unlikely corner-case anyway) */ g_param_value_set_default (param, &value); } if (readable) { 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 & G_PARAM_DEPRECATED) { g_print ("%s%s", (first_flag) ? "" : ", ", _("deprecated")); 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); } g_print ("\n"); switch (G_VALUE_TYPE (&value)) { case G_TYPE_STRING: { const char *string_val = g_value_get_string (&value); n_print ("String. "); if (string_val == NULL) g_print ("Default: null"); else g_print ("Default: \"%s\"", string_val); break; } case G_TYPE_BOOLEAN: { gboolean bool_val = g_value_get_boolean (&value); n_print ("Boolean. Default: %s", bool_val ? "true" : "false"); break; } case G_TYPE_ULONG: { GParamSpecULong *pulong = G_PARAM_SPEC_ULONG (param); n_print ("Unsigned Long. Range: %lu - %lu Default: %lu ", pulong->minimum, pulong->maximum, g_value_get_ulong (&value)); GST_ERROR ("%s: property '%s' of type ulong: consider changing to " "uint/uint64", G_OBJECT_CLASS_NAME (obj_class), g_param_spec_get_name (param)); break; } case G_TYPE_LONG: { GParamSpecLong *plong = G_PARAM_SPEC_LONG (param); n_print ("Long. Range: %ld - %ld Default: %ld ", plong->minimum, plong->maximum, g_value_get_long (&value)); GST_ERROR ("%s: property '%s' of type long: consider changing to " "int/int64", G_OBJECT_CLASS_NAME (obj_class), g_param_spec_get_name (param)); break; } case G_TYPE_UINT: { GParamSpecUInt *puint = G_PARAM_SPEC_UINT (param); n_print ("Unsigned Integer. Range: %u - %u Default: %u ", puint->minimum, puint->maximum, g_value_get_uint (&value)); break; } case G_TYPE_INT: { GParamSpecInt *pint = G_PARAM_SPEC_INT (param); n_print ("Integer. Range: %d - %d Default: %d ", pint->minimum, pint->maximum, g_value_get_int (&value)); break; } case G_TYPE_UINT64: { GParamSpecUInt64 *puint64 = G_PARAM_SPEC_UINT64 (param); n_print ("Unsigned Integer64. Range: %" G_GUINT64_FORMAT " - " "%" G_GUINT64_FORMAT " Default: %" G_GUINT64_FORMAT " ", puint64->minimum, puint64->maximum, g_value_get_uint64 (&value)); break; } case G_TYPE_INT64: { GParamSpecInt64 *pint64 = G_PARAM_SPEC_INT64 (param); n_print ("Integer64. Range: %" G_GINT64_FORMAT " - %" G_GINT64_FORMAT " Default: %" G_GINT64_FORMAT " ", pint64->minimum, pint64->maximum, g_value_get_int64 (&value)); break; } case G_TYPE_FLOAT: { GParamSpecFloat *pfloat = G_PARAM_SPEC_FLOAT (param); n_print ("Float. Range: %15.7g - %15.7g Default: %15.7g ", pfloat->minimum, pfloat->maximum, g_value_get_float (&value)); break; } case G_TYPE_DOUBLE: { GParamSpecDouble *pdouble = G_PARAM_SPEC_DOUBLE (param); n_print ("Double. Range: %15.7g - %15.7g Default: %15.7g ", pdouble->minimum, pdouble->maximum, g_value_get_double (&value)); break; } case G_TYPE_CHAR: case G_TYPE_UCHAR: GST_ERROR ("%s: property '%s' of type char: consider changing to " "int/string", G_OBJECT_CLASS_NAME (obj_class), g_param_spec_get_name (param)); /* fall through */ default: if (param->value_type == GST_TYPE_CAPS) { const GstCaps *caps = gst_value_get_caps (&value); if (!caps) n_print ("Caps (NULL)"); else { print_caps (caps, " "); } } else if (G_IS_PARAM_SPEC_ENUM (param)) { GEnumValue *values; guint j = 0; gint enum_value; const gchar *value_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) value_nick = values[j].value_nick; j++; } n_print ("Enum \"%s\" Default: %d, \"%s\"", g_type_name (G_VALUE_TYPE (&value)), enum_value, value_nick); j = 0; while (values[j].value_name) { g_print ("\n"); n_print (" (%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; vals = pflags->flags_class->values; cur = flags_to_string (vals, g_value_get_flags (&value)); n_print ("Flags \"%s\" Default: 0x%08x, \"%s\"", g_type_name (G_VALUE_TYPE (&value)), g_value_get_flags (&value), cur); while (vals[0].value_name) { g_print ("\n"); n_print (" (0x%08x): %-16s - %s", vals[0].value, vals[0].value_nick, vals[0].value_name); ++vals; } g_free (cur); } else if (G_IS_PARAM_SPEC_OBJECT (param)) { n_print ("Object of type \"%s\"", g_type_name (param->value_type)); } else if (G_IS_PARAM_SPEC_BOXED (param)) { n_print ("Boxed pointer of type \"%s\"", g_type_name (param->value_type)); if (param->value_type == GST_TYPE_STRUCTURE) { const GstStructure *s = gst_value_get_structure (&value); if (s) gst_structure_foreach (s, print_field, (gpointer) " "); } } else if (G_IS_PARAM_SPEC_POINTER (param)) { if (param->value_type != G_TYPE_POINTER) { n_print ("Pointer of type \"%s\".", g_type_name (param->value_type)); } else { n_print ("Pointer."); } } else if (param->value_type == G_TYPE_VALUE_ARRAY) { GParamSpecValueArray *pvarray = G_PARAM_SPEC_VALUE_ARRAY (param); if (pvarray->element_spec) { n_print ("Array of GValues of type \"%s\"", g_type_name (pvarray->element_spec->value_type)); } else { n_print ("Array of GValues"); } } else if (GST_IS_PARAM_SPEC_FRACTION (param)) { GstParamSpecFraction *pfraction = GST_PARAM_SPEC_FRACTION (param); n_print ("Fraction. Range: %d/%d - %d/%d Default: %d/%d ", pfraction->min_num, pfraction->min_den, pfraction->max_num, pfraction->max_den, gst_value_get_fraction_numerator (&value), gst_value_get_fraction_denominator (&value)); } else if (param->value_type == GST_TYPE_ARRAY) { GstParamSpecArray *parray = GST_PARAM_SPEC_ARRAY_LIST (param); if (parray->element_spec) { n_print ("GstValueArray of GValues of type \"%s\"", g_type_name (parray->element_spec->value_type)); } else { n_print ("GstValueArray of GValues"); } } else { n_print ("Unknown type %ld \"%s\"", (glong) param->value_type, g_type_name (param->value_type)); } break; } if (!readable) g_print (" Write only\n"); else g_print ("\n"); pop_indent_n (11); g_value_reset (&value); } if (num_properties == 0) n_print ("none\n"); pop_indent (); g_free (property_specs); } static void print_element_properties_info (GstElement * element) { g_print ("\n"); print_object_properties_info (G_OBJECT (element), G_OBJECT_GET_CLASS (element), "Element Properties"); } static void print_pad_templates_info (GstElement * element, GstElementFactory * factory) { const GList *pads; GstStaticPadTemplate *padtemplate; GstPadTemplate *tmpl; n_print ("Pad Templates:\n"); push_indent (); if (gst_element_factory_get_num_pad_templates (factory) == 0) { n_print ("none\n"); goto done; } pads = gst_element_factory_get_static_pad_templates (factory); 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); push_indent (); 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"); } else n_print ("Availability: UNKNOWN\n"); if (padtemplate->static_caps.string) { GstCaps *caps = gst_static_caps_get (&padtemplate->static_caps); n_print ("Capabilities:\n"); push_indent (); print_caps (caps, ""); // FIXME pop_indent (); gst_caps_unref (caps); } tmpl = gst_element_class_get_pad_template (GST_ELEMENT_GET_CLASS (element), padtemplate->name_template); if (tmpl != NULL) { GType pad_type = GST_PAD_TEMPLATE_GTYPE (tmpl); if (pad_type != G_TYPE_NONE && pad_type != GST_TYPE_PAD) { gpointer pad_klass; pad_klass = g_type_class_ref (pad_type); n_print ("Type: %s\n", g_type_name (pad_type)); print_object_properties_info (NULL, pad_klass, "Pad Properties"); g_type_class_unref (pad_klass); } } pop_indent (); if (pads != NULL) n_print ("\n"); } done: pop_indent (); } static void print_clocking_info (GstElement * element) { gboolean requires_clock, provides_clock; requires_clock = GST_OBJECT_FLAG_IS_SET (element, GST_ELEMENT_FLAG_REQUIRE_CLOCK); provides_clock = GST_OBJECT_FLAG_IS_SET (element, GST_ELEMENT_FLAG_PROVIDE_CLOCK); if (!requires_clock && !provides_clock) { n_print ("\n"); n_print ("Element has no clocking capabilities.\n"); return; } n_print ("\n"); n_print ("Clocking Interaction:\n"); push_indent (); if (requires_clock) { n_print ("element requires a clock\n"); } if (provides_clock) { GstClock *clock; clock = gst_element_get_clock (element); if (clock) { n_print ("element provides a clock: %s\n", GST_OBJECT_NAME (clock)); gst_object_unref (clock); } else n_print ("element is supposed to provide a clock but returned NULL\n"); } pop_indent (); } static void print_uri_handler_info (GstElement * element) { if (GST_IS_URI_HANDLER (element)) { const gchar *const *uri_protocols; const gchar *uri_type; 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"); push_indent (); n_print ("Element can act as %s.\n", uri_type); if (uri_protocols && *uri_protocols) { n_print ("Supported URI protocols:\n"); push_indent (); for (; *uri_protocols != NULL; uri_protocols++) n_print ("%s\n", *uri_protocols); pop_indent (); } else { n_print ("No supported URI protocols\n"); } pop_indent (); } 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"); push_indent (); if (!element->numpads) { n_print ("none\n"); goto done; } pads = element->pads; while (pads) { gchar *name; GstCaps *caps; pad = GST_PAD (pads->data); pads = g_list_next (pads); name = gst_pad_get_name (pad); if (gst_pad_get_direction (pad) == GST_PAD_SRC) n_print ("SRC: '%s'\n", name); else if (gst_pad_get_direction (pad) == GST_PAD_SINK) n_print ("SINK: '%s'\n", name); else n_print ("UNKNOWN: '%s'\n", name); g_free (name); if (pad->padtemplate) { push_indent (); n_print ("Pad Template: '%s'\n", pad->padtemplate->name_template); pop_indent (); } caps = gst_pad_get_current_caps (pad); if (caps) { n_print ("Capabilities:\n"); push_indent (); print_caps (caps, ""); // FIXME pop_indent (); gst_caps_unref (caps); } } done: pop_indent (); } 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 gboolean gtype_needs_ptr_marker (GType type) { if (type == G_TYPE_POINTER) return FALSE; if (G_TYPE_FUNDAMENTAL (type) == G_TYPE_POINTER || G_TYPE_IS_BOXED (type) || G_TYPE_IS_OBJECT (type)) 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; const gchar *pmark; int indent_len; query = (GSignalQuery *) l->data; indent_len = strlen (query->signal_name) + strlen (g_type_name (query->return_type)) + 24; if (gtype_needs_ptr_marker (query->return_type)) { pmark = "* "; indent_len += 2; } else { pmark = ""; } indent = g_new0 (gchar, indent_len + 1); memset (indent, ' ', indent_len); n_print (" \"%s\" : %s %suser_function (%s* object", query->signal_name, g_type_name (query->return_type), pmark, g_type_name (type)); for (j = 0; j < query->n_params; j++) { const gchar *type_name, *asterisk; type_name = g_type_name (query->param_types[j]); asterisk = gtype_needs_ptr_marker (query->param_types[j]) ? "*" : ""; g_print (",\n"); n_print ("%s%s%s arg%d", indent, type_name, asterisk, j); } if (k == 0) { g_print (",\n"); n_print ("%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"); n_print ("Children:\n"); } while (children) { n_print (" %s\n", GST_ELEMENT_NAME (GST_ELEMENT (children->data))); children = g_list_next (children); } } static void print_preset_list (GstElement * element) { gchar **presets, **preset; if (!GST_IS_PRESET (element)) return; presets = gst_preset_get_preset_names (GST_PRESET (element)); if (presets && *presets) { n_print ("\n"); n_print ("Presets:\n"); for (preset = presets; *preset; preset++) { n_print (" \"%s\"\n", *preset); } g_strfreev (presets); } } static void print_blacklist (void) { GList *plugins, *cur; gint count = 0; g_print ("%s\n", _("Blacklisted files:")); plugins = gst_registry_get_plugin_list (gst_registry_get ()); for (cur = plugins; cur != NULL; cur = g_list_next (cur)) { GstPlugin *plugin = (GstPlugin *) (cur->data); if (GST_OBJECT_FLAG_IS_SET (plugin, GST_PLUGIN_FLAG_BLACKLISTED)) { g_print (" %s\n", gst_plugin_get_name (plugin)); 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_typefind_extensions (const gchar * const *extensions) { guint i = 0; while (extensions[i]) { g_print ("%s%s", i > 0 ? ", " : "", extensions[i]); i++; } } static void 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) { GList *features, *orig_features; GstPlugin *plugin; plugin = (GstPlugin *) (plugins->data); plugins = g_list_next (plugins); plugincount++; if (GST_OBJECT_FLAG_IS_SET (plugin, GST_PLUGIN_FLAG_BLACKLISTED)) { blacklistcount++; continue; } orig_features = features = gst_registry_get_feature_list_by_plugin (gst_registry_get (), gst_plugin_get_name (plugin)); 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)) { 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 (feature, TRUE); else g_print ("%s: %s: %s\n", gst_plugin_get_name (plugin), GST_OBJECT_NAME (factory), gst_element_factory_get_metadata (factory, GST_ELEMENT_METADATA_LONGNAME)); } else if (GST_IS_TYPE_FIND_FACTORY (feature)) { 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), gst_plugin_feature_get_name (feature)); extensions = gst_type_find_factory_get_extensions (factory); if (extensions != NULL) { if (!print_all) { print_typefind_extensions (extensions); g_print ("\n"); } } else { if (!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))); } next: features = g_list_next (features); } gst_plugin_feature_list_free (orig_features); } gst_plugin_list_free (orig_plugins); g_strfreev (types); 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_registry_get_plugin_list (gst_registry_get ()); for (p = plugins; p; p = p->next) { GstPlugin *plugin = (GstPlugin *) (p->data); features = gst_registry_get_feature_list_by_plugin (gst_registry_get (), gst_plugin_get_name (plugin)); 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", gst_plugin_get_name (plugin)); 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 *const *uri_protocols; const gchar *dir; gchar *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 (", ", (gchar **) 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) { const gchar *release_date = gst_plugin_get_release_date_string (plugin); const gchar *filename = gst_plugin_get_filename (plugin); n_print ("Plugin Details:\n"); push_indent (); n_print ("%-25s%s\n", "Name", gst_plugin_get_name (plugin)); n_print ("%-25s%s\n", "Description", gst_plugin_get_description (plugin)); n_print ("%-25s%s\n", "Filename", (filename != NULL) ? filename : "(null)"); n_print ("%-25s%s\n", "Version", gst_plugin_get_version (plugin)); n_print ("%-25s%s\n", "License", gst_plugin_get_license (plugin)); n_print ("%-25s%s\n", "Source module", gst_plugin_get_source (plugin)); if (release_date != 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 (release_date); sep = strstr (str, "T"); if (sep != NULL) { *sep = ' '; sep = strstr (sep + 1, "Z"); if (sep != NULL) *sep = ' '; } else { tz = ""; } n_print ("%-25s%s%s\n", "Source release date", str, tz); g_free (str); } n_print ("%-25s%s\n", "Binary package", gst_plugin_get_package (plugin)); n_print ("%-25s%s\n", "Origin URL", gst_plugin_get_origin (plugin)); pop_indent (); n_print ("\n"); } static void print_plugin_features (GstPlugin * plugin) { GList *features, *origlist; gint num_features = 0; gint num_elements = 0; gint num_tracers = 0; gint num_typefinders = 0; gint num_devproviders = 0; gint num_other = 0; origlist = features = gst_registry_get_feature_list_by_plugin (gst_registry_get (), gst_plugin_get_name (plugin)); 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_OBJECT_NAME (factory), gst_element_factory_get_metadata (factory, GST_ELEMENT_METADATA_LONGNAME)); num_elements++; } else if (GST_IS_TYPE_FIND_FACTORY (feature)) { GstTypeFindFactory *factory; const gchar *const *extensions; factory = GST_TYPE_FIND_FACTORY (feature); extensions = gst_type_find_factory_get_extensions (factory); if (extensions) { guint i = 0; g_print (" %s: %s: ", gst_plugin_get_name (plugin), gst_plugin_feature_get_name (feature)); while (extensions[i]) { g_print ("%s%s", i > 0 ? ", " : "", extensions[i]); i++; } g_print ("\n"); } else g_print (" %s: %s: no extensions\n", gst_plugin_get_name (plugin), gst_plugin_feature_get_name (feature)); num_typefinders++; } else if (GST_IS_DEVICE_PROVIDER_FACTORY (feature)) { GstDeviceProviderFactory *factory; factory = GST_DEVICE_PROVIDER_FACTORY (feature); n_print (" %s: %s\n", GST_OBJECT_NAME (factory), gst_device_provider_factory_get_metadata (factory, GST_ELEMENT_METADATA_LONGNAME)); num_devproviders++; } else if (GST_IS_TRACER_FACTORY (feature)) { n_print (" %s (%s)\n", gst_object_get_name (GST_OBJECT (feature)), g_type_name (G_OBJECT_TYPE (feature))); num_tracers++; } 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); } gst_plugin_feature_list_free (origlist); 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_devproviders > 0) n_print (" +-- %d device providers\n", num_devproviders); if (num_tracers > 0) n_print (" +-- %d tracers\n", num_tracers); if (num_other > 0) n_print (" +-- %d other objects\n", num_other); n_print ("\n"); } static int print_feature_info (const gchar * feature_name, gboolean print_all) { GstPluginFeature *feature; GstRegistry *registry = gst_registry_get (); int ret; if ((feature = gst_registry_find_feature (registry, feature_name, GST_TYPE_ELEMENT_FACTORY))) { ret = print_element_info (feature, print_all); goto handled; } if ((feature = gst_registry_find_feature (registry, feature_name, GST_TYPE_TYPE_FIND_FACTORY))) { ret = print_typefind_info (feature, print_all); goto handled; } if ((feature = gst_registry_find_feature (registry, feature_name, GST_TYPE_TRACER_FACTORY))) { ret = print_tracer_info (feature, print_all); goto handled; } /* TODO: handle DEVICE_PROVIDER_FACTORY */ return -1; handled: gst_object_unref (feature); return ret; } static int print_element_info (GstPluginFeature * feature, gboolean print_names) { GstElementFactory *factory; GstElement *element; GstPlugin *plugin; gint maxlevel = 0; factory = GST_ELEMENT_FACTORY (gst_plugin_feature_load (feature)); if (!factory) { g_print ("element plugin couldn't be loaded\n"); return -1; } element = gst_element_factory_create (factory, NULL); if (!element) { gst_object_unref (factory); g_print ("couldn't construct element for some reason\n"); return -1; } if (print_names) _name = g_strdup_printf ("%s: ", GST_OBJECT_NAME (factory)); else _name = NULL; print_factory_details_info (factory); plugin = gst_plugin_feature_get_plugin (GST_PLUGIN_FEATURE (factory)); if (plugin) { print_plugin_info (plugin); gst_object_unref (plugin); } print_hierarchy (G_OBJECT_TYPE (element), 0, &maxlevel); print_interfaces (G_OBJECT_TYPE (element)); print_pad_templates_info (element, factory); print_clocking_info (element); print_uri_handler_info (element); print_pad_info (element); print_element_properties_info (element); print_signal_info (element); print_children_info (element); print_preset_list (element); gst_object_unref (element); gst_object_unref (factory); g_free (_name); return 0; } static int print_typefind_info (GstPluginFeature * feature, gboolean print_names) { GstTypeFindFactory *factory; GstPlugin *plugin; GstCaps *caps; GstRank rank; char s[20]; const gchar *const *extensions; factory = GST_TYPE_FIND_FACTORY (gst_plugin_feature_load (feature)); if (!factory) { g_print ("typefind plugin couldn't be loaded\n"); return -1; } if (print_names) _name = g_strdup_printf ("%s: ", GST_OBJECT_NAME (factory)); else _name = NULL; n_print ("Factory Details:\n"); rank = gst_plugin_feature_get_rank (feature); n_print (" %-25s%s (%d)\n", "Rank", get_rank_name (s, rank), rank); n_print (" %-25s%s\n", "Name", GST_OBJECT_NAME (factory)); caps = gst_type_find_factory_get_caps (factory); if (caps) { gchar *caps_str = gst_caps_to_string (factory->caps); n_print (" %-25s%s\n", "Caps", caps_str); g_free (caps_str); } extensions = gst_type_find_factory_get_extensions (factory); if (extensions) { n_print (" %-25s", "Extensions"); print_typefind_extensions (extensions); n_print ("\n"); } n_print ("\n"); plugin = gst_plugin_feature_get_plugin (GST_PLUGIN_FEATURE (factory)); if (plugin) { print_plugin_info (plugin); gst_object_unref (plugin); } gst_object_unref (factory); g_free (_name); return 0; } static int print_tracer_info (GstPluginFeature * feature, gboolean print_names) { GstTracerFactory *factory; GstTracer *tracer; GstPlugin *plugin; gint maxlevel = 0; factory = GST_TRACER_FACTORY (gst_plugin_feature_load (feature)); if (!factory) { g_print ("tracer plugin couldn't be loaded\n"); return -1; } tracer = (GstTracer *) g_object_new (factory->type, NULL); if (!tracer) { gst_object_unref (factory); g_print ("couldn't construct tracer for some reason\n"); return -1; } if (print_names) _name = g_strdup_printf ("%s: ", GST_OBJECT_NAME (factory)); else _name = NULL; n_print ("Factory Details:\n"); n_print (" %-25s%s\n", "Name", GST_OBJECT_NAME (factory)); n_print ("\n"); plugin = gst_plugin_feature_get_plugin (GST_PLUGIN_FEATURE (factory)); if (plugin) { print_plugin_info (plugin); gst_object_unref (plugin); } print_hierarchy (G_OBJECT_TYPE (tracer), 0, &maxlevel); print_interfaces (G_OBJECT_TYPE (tracer)); /* TODO: list what hooks it registers * - the data is available in gsttracerutils, we need to iterate the * _priv_tracers hashtable for each probe and then check the list of hooks * for each probe whether hook->tracer == tracer :/ */ /* TODO: list what records it emits * - in class_init tracers can create GstTracerRecord instances * - those only get logged right now and there is no association with the * tracer that created them * - we'd need to add them to GstTracerFactory * gst_tracer_class_add_record (klass, record); * - needs work in gstregistrychunks to (de)serialize specs * - gst_tracer_register() would need to iterate the list of records and * copy the record->spec into the factory */ gst_object_unref (tracer); 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_metadata (factory, GST_ELEMENT_METADATA_KLASS); 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_OBJECT_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) { const gchar *const *protocols; 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: while (*protocols != NULL) { g_print ("urisink-%s\n", *protocols); ++protocols; } break; case GST_URI_SRC: while (*protocols != NULL) { g_print ("urisource-%s\n", *protocols); ++protocols; } break; default: break; } } } static void print_plugin_automatic_install_info (GstPlugin * plugin) { GList *features, *l; /* not interested in typefind factories, only element factories */ features = gst_registry_get_feature_list (gst_registry_get (), GST_TYPE_ELEMENT_FACTORY); for (l = features; l != NULL; l = l->next) { GstPluginFeature *feature; GstPlugin *feature_plugin; feature = GST_PLUGIN_FEATURE (l->data); /* only interested in the ones that are in the plugin we just loaded */ feature_plugin = gst_plugin_feature_get_plugin (feature); if (feature_plugin == plugin) { 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); } if (feature_plugin) gst_object_unref (feature_plugin); } 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_registry_get_plugin_list (gst_registry_get ()); 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; gboolean check_exists = FALSE; gchar *min_version = NULL; 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, 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}, {"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, N_ ("When checking if an element or plugin exists, also check that its " "version is at least the version specified"), 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 setlocale (LC_ALL, ""); #ifdef ENABLE_NLS bindtextdomain (GETTEXT_PACKAGE, LOCALEDIR); bind_textdomain_codeset (GETTEXT_PACKAGE, "UTF-8"); textdomain (GETTEXT_PACKAGE); #endif /* avoid glib warnings when inspecting deprecated properties */ g_setenv ("G_ENABLE_DIAGNOSTIC", "0", FALSE); g_set_prgname ("gst-inspect-" GST_API_VERSION); #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_printerr ("Error initializing: %s\n", err->message); g_clear_error (&err); g_option_context_free (ctx); return -1; } g_option_context_free (ctx); #else gst_init (&argc, &argv); #endif gst_tools_print_version (); if (print_all && argc > 1) { g_printerr ("-a requires no extra arguments\n"); return -1; } if (uri_handlers && argc > 1) { g_printerr ("-u requires no extra arguments\n"); return -1; } /* --atleast-version implies --exists */ if (min_version != NULL) { if (sscanf (min_version, "%u.%u.%u", &minver_maj, &minver_min, &minver_micro) < 2) { g_printerr ("Can't parse version '%s' passed to --atleast-version\n", min_version); return -1; } check_exists = TRUE; } if (check_exists) { int exit_code; if (argc == 1) { g_printerr ("--exists requires an extra command line argument\n"); exit_code = -1; } else { if (!plugin_name) { GstPluginFeature *feature; feature = gst_registry_lookup_feature (gst_registry_get (), argv[1]); if (feature != NULL && gst_plugin_feature_check_version (feature, minver_maj, minver_min, minver_micro)) { exit_code = 0; } else { exit_code = 1; } if (feature) gst_object_unref (feature); } else { /* FIXME: support checking for plugins too */ g_printerr ("Checking for plugins is not supported yet\n"); exit_code = -1; } } return exit_code; } /* 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, types); } } else { /* else we try to get a factory */ const char *arg = argv[argc - 1]; int retval = -1; if (!plugin_name) { retval = print_feature_info (arg, print_all); } /* otherwise check if it's a plugin */ if (retval) { GstPlugin *plugin = gst_registry_find_plugin (gst_registry_get (), 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_printerr (_("Could not load plugin file: %s\n"), error->message); g_clear_error (&error); return -1; } } else { g_printerr (_("No such element or plugin '%s'\n"), arg); return -1; } } } } return 0; }