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debugutils: fix enum/flag properties printing for elements

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We want to use the flag/enum nicks here, not only because they
are shorter but also because in case of element-specific enums
and flags we abuse the enum/flag name field for the description,
and we don't want that printed in the dot file.

https://bugzilla.gnome.org/show_bug.cgi?id=763814
This commit is contained in:
Tim-Philipp Müller 2016-03-26 17:21:51 +00:00
parent a35dfb1b16
commit 9e83680563
1 changed files with 51 additions and 1 deletions
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52
gst/gstdebugutils.c
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@ -132,7 +132,57 @@ debug_dump_get_object_params (GObject * object,
g_value_init (&value, property->value_type);
g_object_get_property (G_OBJECT (object), property->name, &value);
if (!(g_param_value_defaults (property, &value))) {
tmp = g_strdup_value_contents (&value);
/* we need to serialise enums and flags ourselves to make sure the
* enum/flag nick is used and not the enum/flag name, which would be the
* C header enum/flag for public enums/flags, but for element-specific
* enums/flags we abuse the name field for the property description,
* and we don't want to print that in the dot file. The nick will
* always work, and it's also shorter. */
if (G_VALUE_HOLDS_ENUM (&value)) {
GEnumClass *e_class = g_type_class_ref (G_VALUE_TYPE (&value));
gint idx, e_val;
tmp = NULL;
e_val = g_value_get_enum (&value);
for (idx = 0; idx < e_class->n_values; ++idx) {
if (e_class->values[idx].value == e_val) {
tmp = g_strdup (e_class->values[idx].value_nick);
break;
}
}
if (tmp == NULL)
continue;
} else if (G_VALUE_HOLDS_FLAGS (&value)) {
GFlagsClass *f_class = g_type_class_ref (G_VALUE_TYPE (&value));
GFlagsValue *vals = f_class->values;
GString *s = NULL;
guint idx, flags_left;
s = g_string_new (NULL);
/* we assume the values are sorted from lowest to highest value */
flags_left = g_value_get_flags (&value);
idx = f_class->n_values;
while (idx > 0) {
--idx;
if (vals[idx].value != 0
&& (flags_left & vals[idx].value) == vals[idx].value) {
if (s->len > 0)
g_string_prepend_c (s, '+');
g_string_prepend (s, vals[idx].value_nick);
flags_left -= vals[idx].value;
if (flags_left == 0)
break;
}
}
if (s->len == 0)
g_string_assign (s, "(none)");
tmp = g_string_free (s, FALSE);
} else {
tmp = g_strdup_value_contents (&value);
}
value_str = g_strescape (tmp, NULL);
g_free (tmp);