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gstreamer/docs/gst-hotdoc-plugins-scanner.c
Mathieu Duponchelle 996743ed39 gst-hotdoc-plugins-scanner: serialize interfaces
2020-06-23 11:58:56 -04:00

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#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#include <stdlib.h>
#include <string.h>
#include <locale.h>
#include <glib/gprintf.h>
#include <gst/gst.h>
#include <gio/gio.h>
#include "gst/gst-i18n-app.h"
static GRegex *cleanup_caps_field = NULL;
static void _add_object_details (GString * json, GString * other_types,
GHashTable * seen_other_types, GObject * object, GType gtype,
GType inst_type);
static gchar *
json_strescape (const gchar * str)
{
const gchar *p;
const gchar *end;
GString *output;
gsize len;
if (!str)
return g_strdup ("NULL");
len = strlen (str);
end = str + len;
output = g_string_sized_new (len);
for (p = str; p < end; p++) {
if (*p == '\\' || *p == '"') {
g_string_append_c (output, '\\');
g_string_append_c (output, *p);
} else if (*p == '%') {
g_string_append_c (output, '%');
g_string_append_c (output, *p);
} else if ((*p > 0 && *p < 0x1f) || *p == 0x7f) {
switch (*p) {
case '\b':
g_string_append (output, "\\b");
break;
case '\f':
g_string_append (output, "\\f");
break;
case '\n':
g_string_append (output, "\\n");
break;
case '\r':
g_string_append (output, "\\r");
break;
case '\t':
g_string_append (output, "\\t");
break;
default:
g_string_append_printf (output, "\\u00%02x", (guint) * p);
break;
}
} else {
g_string_append_c (output, *p);
}
}
return g_string_free (output, FALSE);
}
static gchar *
flags_to_string (GFlagsValue * values, guint flags)
{
GString *s = NULL;
guint flags_left, i;
/* first look for an exact match and count the number of values */
for (i = 0; values[i].value_name != NULL; ++i) {
if (values[i].value == flags)
return g_strdup (values[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 (values[i].value != 0
&& (flags_left & values[i].value) == values[i].value) {
if (s->len > 0)
g_string_append_c (s, '+');
g_string_append (s, values[i].value_nick);
flags_left -= values[i].value;
if (flags_left == 0)
break;
}
}
if (s->len == 0)
g_string_assign (s, "(none)");
return g_string_free (s, FALSE);
}
static void
_serialize_flags_default (GString * json, GType gtype, GValue * value)
{
GFlagsValue *values = G_FLAGS_CLASS (g_type_class_ref (gtype))->values;
gchar *cur;
cur = flags_to_string (values, g_value_get_flags (value));
g_string_append_printf (json, ",\"default\": \"%s\"", cur);
g_free (cur);
}
static void
_serialize_flags (GString * json, GType gtype)
{
GFlagsValue *values = G_FLAGS_CLASS (g_type_class_ref (gtype))->values;
g_string_append_printf (json, "%s\"%s\": { "
"\"kind\": \"flags\"," "\"values\": [", json->len ? "," : "",
g_type_name (gtype));
while (values[0].value_name) {
gchar *value_name = json_strescape (values[0].value_name);
gchar *value_nick = json_strescape (values[0].value_nick);
g_string_append_printf (json, "{\"name\": \"%s\","
"\"value\": \"0x%08x\","
"\"desc\": \"%s\"}", value_nick, values[0].value, value_name);
++values;
if (values[0].value_name)
g_string_append_c (json, ',');
g_free (value_name);
g_free (value_nick);
}
g_string_append (json, "]}");
}
static void
_serialize_enum_default (GString * json, GType gtype, GValue * value)
{
GEnumValue *values;
guint j = 0;
gint enum_value;
gchar *value_nick = g_strdup ("");
values = G_ENUM_CLASS (g_type_class_ref (gtype))->values;
enum_value = g_value_get_enum (value);
while (values[j].value_name) {
if (values[j].value == enum_value) {
g_free (value_nick);
value_nick = json_strescape (values[j].value_nick);
break;
}
j++;
}
g_string_append_printf (json, ",\"default\": \"%s (%d)\"", value_nick,
enum_value);;
g_free (value_nick);
}
static void
_serialize_enum (GString * json, GType gtype, GstPluginAPIFlags api_flags)
{
GEnumValue *values;
guint j = 0;
values = G_ENUM_CLASS (g_type_class_ref (gtype))->values;
g_string_append_printf (json, "%s\"%s\": { "
"\"kind\": \"enum\"", json->len ? "," : "", g_type_name (gtype));
if (api_flags & GST_PLUGIN_API_FLAG_IGNORE_ENUM_MEMBERS) {
g_string_append (json, ",\"ignore-enum-members\": true}");
} else {
g_string_append (json, ",\"values\": [");
while (values[j].value_name) {
gchar *value_name = json_strescape (values[j].value_name);
gchar *value_nick = json_strescape (values[j].value_nick);
g_string_append_printf (json, "{\"name\": \"%s\","
"\"value\": \"%d\","
"\"desc\": \"%s\"}", value_nick, values[j].value, value_name);
j++;
if (values[j].value_name)
g_string_append_c (json, ',');
g_free (value_name);
g_free (value_nick);
}
g_string_append (json, "]}");
}
}
/* @inst_type is used when serializing base classes in the hierarchy:
* we don't instantiate the base class, which may very well be abstract,
* but instantiate the final type (@inst_type), and use @type to determine
* what properties / signals / etc.. we are actually interested in.
*/
static void
_serialize_object (GString * json, GHashTable * seen_other_types, GType gtype,
GType inst_type)
{
GObject *tmpobj;
GString *other_types = NULL;
g_string_append_printf (json, "%s\"%s\": { "
"\"kind\": \"%s\"", json->len ? "," : "", g_type_name (gtype),
G_TYPE_IS_INTERFACE (gtype) ? "interface" : "object");
other_types = g_string_new ("");
g_string_append_c (json, ',');
tmpobj = g_object_new (inst_type, NULL);
_add_object_details (json, other_types, seen_other_types, tmpobj, gtype,
inst_type);
gst_object_unref (tmpobj);
g_string_append_c (json, '}');
if (other_types && other_types->len) {
g_string_append_printf (json, ",%s", other_types->str);
}
g_string_free (other_types, TRUE);
}
static void
_add_signals (GString * json, GString * other_types,
GHashTable * seen_other_types, GObject * object, GType type)
{
gboolean opened = FALSE;
guint *signals = NULL;
guint nsignals;
gint i = 0, j;
GstPluginAPIFlags api_flags;
signals = g_signal_list_ids (type, &nsignals);
for (i = 0; i < nsignals; i++) {
GSignalQuery query = { 0, };
g_signal_query (signals[i], &query);
g_string_append_printf (json,
"%s\"%s\" : {", opened ? "," : ",\"signals\": {", query.signal_name);
opened = TRUE;
g_string_append (json, "\"args\": [");
for (j = 0; j < query.n_params; j++) {
gchar *arg_name = g_strdup_printf ("arg%u", j);
if (j) {
g_string_append_c (json, ',');
}
g_string_append_printf (json, "{ \"name\": \"%s\","
"\"type\": \"%s\" }", arg_name, g_type_name (query.param_types[j]));
if (!g_hash_table_contains (seen_other_types,
g_type_name (query.param_types[j])) &&
gst_type_is_plugin_api (query.param_types[j], &api_flags)) {
g_hash_table_insert (seen_other_types,
(gpointer) g_type_name (query.param_types[j]), NULL);
if (g_type_is_a (query.param_types[j], G_TYPE_ENUM)) {
_serialize_enum (other_types, query.param_types[j], api_flags);
} else if (g_type_is_a (query.param_types[j], G_TYPE_FLAGS)) {
_serialize_flags (other_types, query.param_types[j]);
} else if (g_type_is_a (query.param_types[j], G_TYPE_OBJECT)) {
_serialize_object (other_types, seen_other_types,
query.param_types[j], query.param_types[j]);
}
}
}
g_string_append_c (json, ']');
if (g_type_name (query.return_type) &&
!g_hash_table_contains (seen_other_types,
g_type_name (query.return_type)) &&
gst_type_is_plugin_api (query.return_type, &api_flags)) {
g_hash_table_insert (seen_other_types,
(gpointer) g_type_name (query.return_type), NULL);
if (g_type_is_a (query.return_type, G_TYPE_ENUM)) {
_serialize_enum (other_types, query.return_type, api_flags);
} else if (g_type_is_a (query.return_type, G_TYPE_FLAGS)) {
_serialize_flags (other_types, query.return_type);
} else if (g_type_is_a (query.return_type, G_TYPE_OBJECT)) {
_serialize_object (other_types, seen_other_types, query.return_type,
query.return_type);
}
}
g_string_append_printf (json,
",\"return-type\": \"%s\"", g_type_name (query.return_type));
if (query.signal_flags & G_SIGNAL_RUN_FIRST)
g_string_append (json, ",\"when\": \"first\"");
else if (query.signal_flags & G_SIGNAL_RUN_LAST)
g_string_append (json, ",\"when\": \"last\"");
else if (query.signal_flags & G_SIGNAL_RUN_CLEANUP)
g_string_append (json, ",\"when\": \"cleanup\"");
if (query.signal_flags & G_SIGNAL_NO_RECURSE)
g_string_append (json, ",\"no-recurse\": true");
if (query.signal_flags & G_SIGNAL_DETAILED)
g_string_append (json, ",\"detailed\": true");
if (query.signal_flags & G_SIGNAL_ACTION)
g_string_append (json, ",\"action\": true");
if (query.signal_flags & G_SIGNAL_NO_HOOKS)
g_string_append (json, ",\"no-hooks\": true");
g_string_append_c (json, '}');
opened = TRUE;
}
g_free (signals);
if (opened)
g_string_append (json, "}");
}
static void
_add_properties (GString * json, GString * other_types,
GHashTable * seen_other_types, GObject * object, GObjectClass * klass,
GType type)
{
gchar *tmpstr;
guint i, n_props;
gboolean opened = FALSE;
GParamSpec **specs, *spec;
GstPluginAPIFlags api_flags;
specs = g_object_class_list_properties (klass, &n_props);
for (i = 0; i < n_props; i++) {
GValue value = { 0, };
const gchar *mutable_str = NULL;
spec = specs[i];
if (spec->owner_type != type)
continue;
g_value_init (&value, spec->value_type);
if (object && ! !(spec->flags & G_PARAM_READABLE) &&
!(spec->flags & GST_PARAM_DOC_SHOW_DEFAULT)) {
g_object_get_property (G_OBJECT (object), spec->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 (spec, &value);
}
if (!opened)
g_string_append (json, ",\"properties\": {");
if ((spec->flags & GST_PARAM_MUTABLE_PLAYING)) {
mutable_str = "\"playing\"";
} else if ((spec->flags & GST_PARAM_MUTABLE_PAUSED)) {
mutable_str = "\"paused\"";
} else if ((spec->flags & GST_PARAM_MUTABLE_READY)) {
mutable_str = "\"ready\"";
} else {
mutable_str = "\"null\"";
}
tmpstr = json_strescape (g_param_spec_get_blurb (spec));
g_string_append_printf (json,
"%s"
"\"%s\": {"
"\"construct-only\": %s,"
"\"construct\": %s,"
"\"readable\": %s,"
"\"writable\": %s,"
"\"blurb\": \"%s\","
"\"controllable\": %s,"
"\"conditionally-available\": %s,"
"\"mutable\": %s,"
"\"type\": \"%s\"",
opened ? "," : "",
spec->name,
spec->flags & G_PARAM_CONSTRUCT_ONLY ? "true" : "false",
spec->flags & G_PARAM_CONSTRUCT ? "true" : "false",
spec->flags & G_PARAM_READABLE ? "true" : "false",
spec->flags & G_PARAM_WRITABLE ? "true" : "false", tmpstr,
spec->flags & GST_PARAM_CONTROLLABLE ? "true" : "false",
spec->flags & GST_PARAM_CONDITIONALLY_AVAILABLE ? "true" : "false",
mutable_str, g_type_name (G_PARAM_SPEC_VALUE_TYPE (spec)));
g_free (tmpstr);
if (!g_hash_table_contains (seen_other_types,
g_type_name (spec->value_type))
&& gst_type_is_plugin_api (spec->value_type, &api_flags)) {
g_hash_table_insert (seen_other_types,
(gpointer) g_type_name (spec->value_type), NULL);
if (G_IS_PARAM_SPEC_ENUM (spec)) {
_serialize_enum (other_types, spec->value_type, api_flags);
} else if (G_IS_PARAM_SPEC_FLAGS (spec)) {
_serialize_flags (other_types, spec->value_type);
} else if (G_IS_PARAM_SPEC_OBJECT (spec)) {
_serialize_object (other_types, seen_other_types, spec->value_type,
spec->value_type);
}
}
switch (G_VALUE_TYPE (&value)) {
case G_TYPE_STRING:
{
const char *string_val = g_value_get_string (&value);
gchar *tmpstr = json_strescape (string_val);
g_string_append_printf (json, ",\"default\": \"%s\"", tmpstr);;
g_free (tmpstr);
break;
}
case G_TYPE_BOOLEAN:
{
gboolean bool_val = g_value_get_boolean (&value);
g_string_append_printf (json, ",\"default\": \"%s\"",
bool_val ? "true" : "false");
break;
}
case G_TYPE_ULONG:
{
GParamSpecULong *pulong = G_PARAM_SPEC_ULONG (spec);
g_string_append_printf (json,
",\"default\": \"%lu\""
",\"min\": \"%lu\""
",\"max\": \"%lu\"",
g_value_get_ulong (&value), pulong->minimum, pulong->maximum);
GST_ERROR_OBJECT (object,
"property '%s' of type ulong: consider changing to " "uint/uint64",
g_param_spec_get_name (spec));
break;
}
case G_TYPE_LONG:
{
GParamSpecLong *plong = G_PARAM_SPEC_LONG (spec);
g_string_append_printf (json,
",\"default\": \"%ld\""
",\"min\": \"%ld\""
",\"max\": \"%ld\"",
g_value_get_long (&value), plong->minimum, plong->maximum);
GST_ERROR_OBJECT (object,
"property '%s' of type long: consider changing to " "int/int64",
g_param_spec_get_name (spec));
break;
}
case G_TYPE_UINT:
{
GParamSpecUInt *puint = G_PARAM_SPEC_UINT (spec);
g_string_append_printf (json,
",\"default\": \"%d\""
",\"min\": \"%d\""
",\"max\": \"%d\"",
g_value_get_uint (&value), puint->minimum, puint->maximum);
break;
}
case G_TYPE_INT:
{
GParamSpecInt *pint = G_PARAM_SPEC_INT (spec);
g_string_append_printf (json,
",\"default\": \"%d\""
",\"min\": \"%d\""
",\"max\": \"%d\"",
g_value_get_int (&value), pint->minimum, pint->maximum);
break;
}
case G_TYPE_UINT64:
{
GParamSpecUInt64 *puint64 = G_PARAM_SPEC_UINT64 (spec);
g_string_append_printf (json,
",\"default\": \"%" G_GUINT64_FORMAT
"\",\"min\": \"%" G_GUINT64_FORMAT
"\",\"max\": \"%" G_GUINT64_FORMAT "\"",
g_value_get_uint64 (&value), puint64->minimum, puint64->maximum);
break;
}
case G_TYPE_INT64:
{
GParamSpecInt64 *pint64 = G_PARAM_SPEC_INT64 (spec);
g_string_append_printf (json,
",\"default\": \"%" G_GUINT64_FORMAT
"\",\"min\": \"%" G_GINT64_FORMAT
"\",\"max\": \"%" G_GINT64_FORMAT "\"",
g_value_get_int64 (&value), pint64->minimum, pint64->maximum);
break;
}
case G_TYPE_FLOAT:
{
GParamSpecFloat *pfloat = G_PARAM_SPEC_FLOAT (spec);
g_string_append_printf (json,
",\"default\": \"%g\""
",\"min\": \"%g\""
",\"max\": \"%g\"",
g_value_get_float (&value), pfloat->minimum, pfloat->maximum);
break;
}
case G_TYPE_DOUBLE:
{
GParamSpecDouble *pdouble = G_PARAM_SPEC_DOUBLE (spec);
g_string_append_printf (json,
",\"default\": \"%g\""
",\"min\": \"%g\""
",\"max\": \"%g\"",
g_value_get_double (&value), pdouble->minimum, pdouble->maximum);
break;
}
case G_TYPE_CHAR:
case G_TYPE_UCHAR:
GST_ERROR_OBJECT (object,
"property '%s' of type char: consider changing to " "int/string",
g_param_spec_get_name (spec));
/* fall through */
default:
if (spec->value_type == GST_TYPE_CAPS) {
const GstCaps *caps = gst_value_get_caps (&value);
if (caps) {
gchar *capsstr = gst_caps_to_string (caps);
gchar *tmpcapsstr = json_strescape (capsstr);
g_string_append_printf (json, ",\"default\": \"%s\"", tmpcapsstr);
g_free (capsstr);
g_free (tmpcapsstr);
}
} else if (G_IS_PARAM_SPEC_BOXED (spec)) {
if (spec->value_type == GST_TYPE_STRUCTURE) {
const GstStructure *s = gst_value_get_structure (&value);
if (s) {
gchar *str = gst_structure_to_string (s);
gchar *tmpstr = json_strescape (str);
g_string_append_printf (json, ",\"default\": \"%s\"", tmpstr);
g_free (str);
g_free (tmpstr);
}
}
} else if (GST_IS_PARAM_SPEC_FRACTION (spec)) {
GstParamSpecFraction *pfraction = GST_PARAM_SPEC_FRACTION (spec);
g_string_append_printf (json,
",\"default\": \"%d/%d\""
",\"min\": \"%d/%d\""
",\"max\": \"%d/%d\"",
gst_value_get_fraction_numerator (&value),
gst_value_get_fraction_denominator (&value),
pfraction->min_num, pfraction->min_den,
pfraction->max_num, pfraction->max_den);
} else if (G_IS_PARAM_SPEC_ENUM (spec)) {
_serialize_enum_default (json, spec->value_type, &value);
} else if (G_IS_PARAM_SPEC_FLAGS (spec)) {
_serialize_flags_default (json, spec->value_type, &value);
}
break;
}
g_string_append_c (json, '}');
opened = TRUE;
}
if (opened)
g_string_append (json, "}");
}
static gboolean
print_field (GQuark field, const GValue * value, GString * jcaps)
{
gchar *tmp, *str = gst_value_serialize (value);
if (!g_strcmp0 (g_quark_to_string (field), "format") ||
!g_strcmp0 (g_quark_to_string (field), "rate")) {
if (!cleanup_caps_field)
cleanup_caps_field = g_regex_new ("\\(string\\)|\\(rate\\)", 0, 0, NULL);
tmp = str;
str = g_regex_replace (cleanup_caps_field, str, -1, 0, "", 0, NULL);;
g_free (tmp);
}
g_string_append_printf (jcaps, "%15s: %s\n", g_quark_to_string (field), str);
g_free (str);
return TRUE;
}
static gchar *
_build_caps (const GstCaps * caps)
{
guint i;
gchar *res;
GString *jcaps = g_string_new (NULL);
if (gst_caps_is_any (caps)) {
g_string_append (jcaps, "ANY");
return g_string_free (jcaps, FALSE);
}
if (gst_caps_is_empty (caps)) {
g_string_append (jcaps, "EMPTY");
return g_string_free (jcaps, FALSE);
}
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);
g_string_append_printf (jcaps, "%s%s(%s):\n",
i ? "\n" : "", gst_structure_get_name (structure), features_string);
g_free (features_string);
} else {
g_string_append_printf (jcaps, "%s:\n",
gst_structure_get_name (structure));
}
gst_structure_foreach (structure, (GstStructureForeachFunc) print_field,
jcaps);
}
res = json_strescape (jcaps->str);
g_string_free (jcaps, TRUE);
return res;
}
static void
_add_element_pad_templates (GString * json, GString * other_types,
GHashTable * seen_other_types, GstElement * element,
GstElementFactory * factory)
{
gboolean opened = FALSE;
const GList *pads;
GstStaticPadTemplate *padtemplate;
GRegex *re = g_regex_new ("%", 0, 0, NULL);
GstPluginAPIFlags api_flags;
pads = gst_element_factory_get_static_pad_templates (factory);
while (pads) {
GstCaps *documentation_caps;
gchar *name, *caps;
GType pad_type;
GstPadTemplate *tmpl;
padtemplate = (GstStaticPadTemplate *) (pads->data);
pads = g_list_next (pads);
tmpl = gst_element_class_get_pad_template (GST_ELEMENT_GET_CLASS (element),
padtemplate->name_template);
name = g_regex_replace (re, padtemplate->name_template,
-1, 0, "%%", 0, NULL);;
documentation_caps = gst_pad_template_get_documentation_caps (tmpl);
caps = _build_caps (documentation_caps);
gst_caps_replace (&documentation_caps, NULL);
g_string_append_printf (json, "%s"
"\"%s\": {"
"\"caps\": \"%s\","
"\"direction\": \"%s\","
"\"presence\": \"%s\"",
opened ? "," : ",\"pad-templates\": {",
name, caps,
padtemplate->direction ==
GST_PAD_SRC ? "src" : padtemplate->direction ==
GST_PAD_SINK ? "sink" : "unknown",
padtemplate->presence ==
GST_PAD_ALWAYS ? "always" : padtemplate->presence ==
GST_PAD_SOMETIMES ? "sometimes" : padtemplate->presence ==
GST_PAD_REQUEST ? "request" : "unknown");
opened = TRUE;
g_free (name);
pad_type = GST_PAD_TEMPLATE_GTYPE (tmpl);
if (pad_type != G_TYPE_NONE && pad_type != GST_TYPE_PAD) {
g_string_append_printf (json, ", \"type\": \"%s\"",
g_type_name (pad_type));
if (!g_hash_table_contains (seen_other_types, g_type_name (pad_type))
&& gst_type_is_plugin_api (pad_type, &api_flags)) {
g_hash_table_insert (seen_other_types,
(gpointer) g_type_name (pad_type), NULL);
_serialize_object (other_types, seen_other_types, pad_type, pad_type);
}
}
g_string_append_c (json, '}');
}
if (opened)
g_string_append_c (json, '}');
g_regex_unref (re);
}
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
_add_factory_details (GString * json, GstElementFactory * factory)
{
gchar **keys, **k;
gboolean f = TRUE;
keys = gst_element_factory_get_metadata_keys (factory);
if (keys != NULL) {
for (k = keys; *k != NULL; ++k) {
gchar *val;
gchar *key = *k;
val = json_strescape (gst_element_factory_get_metadata (factory, key));
g_string_append_printf (json, "%s\"%s\": \"%s\"", f ? "" : ",", key, val);
f = FALSE;
g_free (val);
}
g_strfreev (keys);
g_string_append (json, ",");
}
}
static void
_add_object_details (GString * json, GString * other_types,
GHashTable * seen_other_types, GObject * object, GType type,
GType inst_type)
{
GType *interfaces;
guint n_interfaces;
GType ptype = type;
g_string_append (json, "\"hierarchy\": [");
for (;; ptype = g_type_parent (ptype)) {
g_string_append_printf (json, "\"%s\"%c", g_type_name (ptype),
((ptype == G_TYPE_OBJECT || ptype == G_TYPE_INTERFACE) ? ' ' : ','));
if (!g_hash_table_contains (seen_other_types, g_type_name (ptype))
&& gst_type_is_plugin_api (ptype, NULL)) {
g_hash_table_insert (seen_other_types, (gpointer) g_type_name (ptype),
NULL);
_serialize_object (other_types, seen_other_types, ptype, inst_type);
}
if (ptype == G_TYPE_OBJECT || ptype == G_TYPE_INTERFACE)
break;
}
g_string_append (json, "]");
interfaces = g_type_interfaces (type, &n_interfaces);
if (n_interfaces) {
GType *iface;
g_string_append (json, ",\"interfaces\": [");
for (iface = interfaces; *iface; iface++, n_interfaces--) {
g_string_append_printf (json, "\"%s\"%c", g_type_name (*iface),
n_interfaces > 1 ? ',' : ' ');
if (!g_hash_table_contains (seen_other_types, g_type_name (*iface))
&& gst_type_is_plugin_api (*iface, NULL)) {
g_hash_table_insert (seen_other_types, (gpointer) g_type_name (*iface),
NULL);
_serialize_object (other_types, seen_other_types, *iface, inst_type);
}
}
g_string_append (json, "]");
g_free (interfaces);
}
_add_properties (json, other_types, seen_other_types, object,
G_OBJECT_GET_CLASS (object), type);
_add_signals (json, other_types, seen_other_types, object, type);
}
static void
_add_element_details (GString * json, GString * other_types,
GHashTable * seen_other_types, GstPluginFeature * feature)
{
GstElement *element =
gst_element_factory_create (GST_ELEMENT_FACTORY (feature), NULL);
char s[20];
g_assert (element);
g_string_append_printf (json,
"\"%s\": {"
"\"rank\":\"%s\",",
GST_OBJECT_NAME (feature),
get_rank_name (s, gst_plugin_feature_get_rank (feature)));
_add_factory_details (json, GST_ELEMENT_FACTORY (feature));
_add_object_details (json, other_types, seen_other_types, G_OBJECT (element),
G_OBJECT_TYPE (element), G_OBJECT_TYPE (element));
_add_element_pad_templates (json, other_types, seen_other_types, element,
GST_ELEMENT_FACTORY (feature));
g_string_append (json, "}");
}
int
main (int argc, char *argv[])
{
gchar *libfile;
GError *error = NULL;
GString *json;
GString *other_types;
GHashTable *seen_other_types;
GstPlugin *plugin;
gboolean f = TRUE;
GList *features, *tmp;
gint i;
gboolean first = TRUE;
GError *err = NULL;
g_assert (argc >= 3);
setlocale (LC_ALL, "");
setlocale (LC_NUMERIC, "C");
#ifdef ENABLE_NLS
bindtextdomain (GETTEXT_PACKAGE, LOCALEDIR);
bind_textdomain_codeset (GETTEXT_PACKAGE, "UTF-8");
textdomain (GETTEXT_PACKAGE);
#endif
gst_init (NULL, NULL);
json = g_string_new ("{");
for (i = 2; i < argc; i++) {
gchar *basename, **splitext, *filename;
libfile = argv[i];
plugin = gst_plugin_load_file (libfile, &error);
if (!plugin) {
g_printerr ("%s could not be loaded as a GstPlugin: %s", libfile,
error->message ? error->message : "no known reasons");
g_clear_error (&error);
continue;
}
other_types = g_string_new ("");
seen_other_types = g_hash_table_new (g_str_hash, g_str_equal);
basename = g_filename_display_basename (libfile);
splitext = g_strsplit (basename, ".", 2);
filename =
g_str_has_prefix (splitext[0], "lib") ? &splitext[0][3] : splitext[0];
g_string_append_printf (json,
"%s\"%s\": {"
"\"description\":\"%s\","
"\"filename\":\"%s\","
"\"source\":\"%s\","
"\"package\":\"%s\","
"\"license\":\"%s\","
"\"url\":\"%s\","
"\"elements\":{",
first ? "" : ",",
gst_plugin_get_name (plugin),
gst_plugin_get_description (plugin),
filename,
gst_plugin_get_source (plugin),
gst_plugin_get_package (plugin),
gst_plugin_get_license (plugin), gst_plugin_get_origin (plugin));
g_free (basename);
g_strfreev (splitext);
first = FALSE;
features =
gst_registry_get_feature_list_by_plugin (gst_registry_get (),
gst_plugin_get_name (plugin));
f = TRUE;
for (tmp = features; tmp; tmp = tmp->next) {
GstPluginFeature *feature = tmp->data;
if (GST_IS_ELEMENT_FACTORY (feature)) {
if (!f)
g_string_append_printf (json, ",");
_add_element_details (json, other_types, seen_other_types, feature);
f = FALSE;
}
}
g_string_append (json, "}, \"tracers\": {");
gst_plugin_feature_list_free (features);
f = TRUE;
features =
gst_registry_get_feature_list_by_plugin (gst_registry_get (),
gst_plugin_get_name (plugin));
for (tmp = features; tmp; tmp = tmp->next) {
GstPluginFeature *feature = tmp->data;
if (GST_IS_TRACER_FACTORY (feature)) {
if (!f)
g_string_append_printf (json, ",");
g_string_append_printf (json, "\"%s\": {}", GST_OBJECT_NAME (feature));
f = FALSE;
}
}
g_string_append_printf (json, "}, \"other-types\": {%s}}",
other_types->str);
gst_plugin_feature_list_free (features);
g_hash_table_unref (seen_other_types);
g_string_free (other_types, TRUE);
}
g_string_append_c (json, '}');
if (!g_file_set_contents (argv[1], json->str, -1, &err)) {
g_printerr ("Could not set json to %s: %s", argv[1], err->message);
g_clear_error (&err);
return -1;
}
g_string_free (json, TRUE);
return 0;
}
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