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gstreamer/tools/gst-inspect.c
Stefan Sauer a4e561c7f8 gst-inspect: only print presets line if num-presets > 0 
Also check for an empty strv.
2015-01-04 23:26:19 +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-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 <string.h>
#include <locale.h>
#include <glib/gprintf.h>
static char *_name = NULL;
static int print_element_info (GstElementFactory * factory,
gboolean print_names);
/* *INDENT-OFF* */
G_GNUC_PRINTF (1, 2)
/* *INDENT-ON* */
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);
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");
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);
}
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_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)
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;
} 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 (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);
}
n_print ("\n");
switch (G_VALUE_TYPE (&value)) {
case G_TYPE_STRING:
{
const char *string_val = g_value_get_string (&value);
n_print ("%-23.23s 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 ("%-23.23s Boolean. ", "");
g_print ("Default: %s", bool_val ? "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, g_value_get_ulong (&value));
GST_ERROR ("%s: property '%s' of type ulong: consider changing to "
"uint/uint64", GST_OBJECT_NAME (element),
g_param_spec_get_name (param));
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, g_value_get_long (&value));
GST_ERROR ("%s: property '%s' of type long: consider changing to "
"int/int64", GST_OBJECT_NAME (element),
g_param_spec_get_name (param));
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, 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, 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, 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, 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, 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, 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", GST_OBJECT_NAME (element),
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 ("%-23.23s 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 ("%-23.23s 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");
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;
vals = pflags->flags_class->values;
cur = flags_to_string (vals, g_value_get_flags (&value));
n_print ("%-23.23s 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");
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);
} 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));
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 ("%-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,
gst_value_get_fraction_numerator (&value),
gst_value_get_fraction_denominator (&value));
} else {
n_print ("%-23.23s 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");
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 (gst_element_factory_get_num_pad_templates (factory) == 0) {
n_print (" none\n");
return;
}
gstelement_class = GST_ELEMENT_CLASS (G_OBJECT_GET_CLASS (element));
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);
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)
{
GstElementClass *gstelement_class;
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));
}
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");
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");
}
}
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");
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;
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)
n_print (" Pad Template: '%s'\n", pad->padtemplate->name_template);
caps = gst_pad_get_current_caps (pad);
if (caps) {
n_print (" Capabilities:\n");
print_caps (caps, " ");
gst_caps_unref (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;
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 (query->return_type == G_TYPE_POINTER) {
pmark = "";
} else if (G_TYPE_FUNDAMENTAL (query->return_type) == G_TYPE_POINTER
|| G_TYPE_IS_BOXED (query->return_type)
|| G_TYPE_IS_OBJECT (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++) {
g_print (",\n");
if (G_TYPE_IS_FUNDAMENTAL (query->param_types[j])) {
n_print ("%s%s arg%d", indent,
g_type_name (query->param_types[j]), j);
} else if (G_TYPE_IS_ENUM (query->param_types[j])) {
n_print ("%s%s arg%d", indent,
g_type_name (query->param_types[j]), j);
} else {
n_print ("%s%s* arg%d", indent,
g_type_name (query->param_types[j]), 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_element_list (gboolean print_all)
{
int plugincount = 0, featurecount = 0, blacklistcount = 0;
GList *plugins, *orig_plugins;
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)) {
GstElementFactory *factory;
factory = GST_ELEMENT_FACTORY (feature);
if (print_all)
print_element_info (factory, 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;
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) {
guint i = 0;
while (extensions[i]) {
if (!print_all)
g_print ("%s%s", i > 0 ? ", " : "", 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", 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_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");
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));
n_print ("\n");
}
static void
print_plugin_features (GstPlugin * plugin)
{
GList *features, *origlist;
gint num_features = 0;
gint num_elements = 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 (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_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_registry_find_feature (gst_registry_get (), 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;
GstPlugin *plugin;
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) {
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_element_flag_info (element);
print_implementation_info (element);
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 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;
#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},
{"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);
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;
}
} 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);
}
} 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_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_error_free (error);
return -1;
}
} else {
g_printerr (_("No such element or plugin '%s'\n"), arg);
return -1;
}
}
}
}
return 0;
}
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