/**
* gst_caps_features_is_equal:
* @features1: a #GstCapsFeatures.
* @features2: a #GstCapsFeatures.
*
* Check if @features1 and @features2 are equal.
*
* Returns: %TRUE if @features1 and @features2 are equal.
*
* Since: 1.2
*/
gboolean
gst_caps_features_is_equal (const GstCapsFeatures * features1,
const GstCapsFeatures * features2)
{
guint i, n;
g_return_val_if_fail (features1 != NULL, FALSE);
g_return_val_if_fail (features2 != NULL, FALSE);
if (features1->is_any || features2->is_any)
return TRUE;
/* Check for the sysmem==empty case */
if (features1->array->len == 0 && features2->array->len == 0)
return TRUE;
if (features1->array->len == 0 && features2->array->len == 1
&& gst_caps_features_contains_id (features2,
_gst_caps_feature_memory_system_memory))
return TRUE;
if (features2->array->len == 0 && features1->array->len == 1
&& gst_caps_features_contains_id (features1,
_gst_caps_feature_memory_system_memory))
return TRUE;
if (features1->array->len != features2->array->len)
return FALSE;
n = features1->array->len;
for (i = 0; i < n; i++)
if (!gst_caps_features_contains_id (features2,
gst_caps_features_get_nth_id (features1, i)))
return FALSE;
return TRUE;
}
static GstCaps *
gst_gl_mixer_set_caps_features (const GstCaps * caps,
const gchar * feature_name)
{
GstCaps *tmp = gst_caps_copy (caps);
guint n = gst_caps_get_size (tmp);
guint i = 0;
for (i = 0; i < n; i++) {
GstCapsFeatures *features = gst_caps_get_features (tmp, i);
if (features) {
guint n_f = gst_caps_features_get_size (features);
guint j = 0;
for (j = 0; j < n_f; j++) {
gst_caps_features_remove_id (features,
gst_caps_features_get_nth_id (features, j));
}
}
gst_caps_features_add (features, feature_name);
gst_caps_set_simple (tmp, "format", G_TYPE_STRING, "RGBA", NULL);
}
return tmp;
}
/**
* gst_caps_features_get_nth:
* @features: a #GstCapsFeatures.
* @i: index of the feature
*
* Returns the @i-th feature of @features.
*
* Returns: The @i-th feature of @features.
*
* Since: 1.2
*/
const gchar *
gst_caps_features_get_nth (const GstCapsFeatures * features, guint i)
{
const gchar *feature;
GQuark quark;
g_return_val_if_fail (features != NULL, NULL);
quark = gst_caps_features_get_nth_id (features, i);
if (!quark)
return NULL;
feature = g_quark_to_string (quark);
return feature;
}
/**
* gst_caps_features_copy:
* @features: a #GstCapsFeatures to duplicate
*
* Duplicates a #GstCapsFeatures and all its values.
*
* Free-function: gst_caps_features_free
*
* Returns: (transfer full): a new #GstCapsFeatures.
*
* Since: 1.2
*/
GstCapsFeatures *
gst_caps_features_copy (const GstCapsFeatures * features)
{
GstCapsFeatures *copy;
guint i, n;
g_return_val_if_fail (features != NULL, NULL);
copy = gst_caps_features_new_empty ();
n = gst_caps_features_get_size (features);
for (i = 0; i < n; i++)
gst_caps_features_add_id (copy, gst_caps_features_get_nth_id (features, i));
copy->is_any = features->is_any;
return copy;
}
/**
* gst_caps_features_remove_id:
* @features: a #GstCapsFeatures.
* @feature: a feature.
*
* Removes @feature from @features.
*
* Since: 1.2
*/
void
gst_caps_features_remove_id (GstCapsFeatures * features, GQuark feature)
{
guint i, n;
g_return_if_fail (features != NULL);
g_return_if_fail (IS_MUTABLE (features));
g_return_if_fail (feature != 0);
n = features->array->len;
for (i = 0; i < n; i++) {
GQuark quark = gst_caps_features_get_nth_id (features, i);
if (quark == feature) {
g_array_remove_index_fast (features->array, i);
return;
}
}
}
/**
* gst_caps_features_contains_id:
* @features: a #GstCapsFeatures.
* @feature: a feature
*
* Check if @features contains @feature.
*
* Returns: %TRUE if @features contains @feature.
*
* Since: 1.2
*/
gboolean
gst_caps_features_contains_id (const GstCapsFeatures * features, GQuark feature)
{
guint i, n;
g_return_val_if_fail (features != NULL, FALSE);
g_return_val_if_fail (feature != 0, FALSE);
if (features->is_any)
return TRUE;
n = features->array->len;
if (n == 0)
return feature == _gst_caps_feature_memory_system_memory;
for (i = 0; i < n; i++) {
if (gst_caps_features_get_nth_id (features, i) == feature)
return TRUE;
}
return FALSE;
}
GstCaps *
gst_gl_caps_replace_all_caps_features (const GstCaps * caps,
const gchar * feature_name)
{
GstCaps *tmp = gst_caps_copy (caps);
guint n = gst_caps_get_size (tmp);
guint i = 0;
for (i = 0; i < n; i++) {
GstCapsFeatures *features = gst_caps_get_features (tmp, i);
if (features) {
guint n_f = gst_caps_features_get_size (features);
guint j = 0;
for (j = 0; j < n_f; j++) {
gst_caps_features_remove_id (features,
gst_caps_features_get_nth_id (features, j));
}
}
gst_caps_features_add (features, feature_name);
}
return tmp;
}
