gst: capsfeatures: Use GstIdStr for caps features

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/7432>
This commit is contained in:
Sebastian Dröge 2024-08-30 18:49:44 +03:00
parent 6233eb0ff3
commit eed7c9c66a
2 changed files with 410 additions and 49 deletions

View file

@ -50,9 +50,13 @@
#include "config.h"
#endif
/* FIXME: For deprecated GstCapsFeatures API usage */
#define GLIB_DISABLE_DEPRECATION_WARNINGS
#include <string.h>
#include "gst_private.h"
#include "gstcapsfeatures.h"
#include "gstidstr-private.h"
#include <gst/gst.h>
GST_DEBUG_CATEGORY_STATIC (gst_caps_features_debug);
@ -70,7 +74,7 @@ GType _gst_caps_features_type = 0;
static gint static_caps_features_parent_refcount = G_MAXINT;
GstCapsFeatures *_gst_caps_features_any = NULL;
GstCapsFeatures *_gst_caps_features_memory_system_memory = NULL;
static GQuark _gst_caps_feature_memory_system_memory = 0;
static GstIdStr _gst_caps_feature_memory_system_memory = GST_ID_STR_INIT;
G_DEFINE_BOXED_TYPE (GstCapsFeatures, gst_caps_features,
gst_caps_features_copy, gst_caps_features_free);
@ -90,8 +94,6 @@ _priv_gst_caps_features_initialize (void)
"GstCapsFeatures debug");
_gst_caps_features_type = gst_caps_features_get_type ();
_gst_caps_feature_memory_system_memory =
g_quark_from_static_string (GST_CAPS_FEATURE_MEMORY_SYSTEM_MEMORY);
g_value_register_transform_func (_gst_caps_features_type, G_TYPE_STRING,
gst_caps_features_transform_to_string);
@ -99,8 +101,11 @@ _priv_gst_caps_features_initialize (void)
_gst_caps_features_any = gst_caps_features_new_any ();
gst_caps_features_set_parent_refcount (_gst_caps_features_any,
&static_caps_features_parent_refcount);
gst_id_str_set_static_str (&_gst_caps_feature_memory_system_memory,
GST_CAPS_FEATURE_MEMORY_SYSTEM_MEMORY);
_gst_caps_features_memory_system_memory =
gst_caps_features_new_id (_gst_caps_feature_memory_system_memory, 0);
gst_caps_features_new_id_str (&_gst_caps_feature_memory_system_memory,
NULL);
gst_caps_features_set_parent_refcount
(_gst_caps_features_memory_system_memory,
&static_caps_features_parent_refcount);
@ -116,6 +121,7 @@ _priv_gst_caps_features_cleanup (void)
(_gst_caps_features_memory_system_memory, NULL);
gst_caps_features_free (_gst_caps_features_memory_system_memory);
_gst_caps_features_memory_system_memory = NULL;
gst_id_str_clear (&_gst_caps_feature_memory_system_memory);
}
/**
@ -183,7 +189,8 @@ gst_caps_features_new_empty (void)
features = g_new (GstCapsFeatures, 1);
features->type = _gst_caps_features_type;
features->parent_refcount = NULL;
features->array = g_array_new (FALSE, FALSE, sizeof (GQuark));
features->array = g_array_new (FALSE, FALSE, sizeof (GstIdStr));
g_array_set_clear_func (features->array, (GDestroyNotify) gst_id_str_clear);
features->is_any = FALSE;
GST_TRACE ("created caps features %p", features);
@ -234,6 +241,30 @@ gst_caps_features_new_single (const gchar * feature)
return features;
}
/**
* gst_caps_features_new_single_static_str:
* @feature: The feature
*
* Creates a new #GstCapsFeatures with a single feature.
*
* @feature needs to be valid for the remaining lifetime of the process, e.g. has
* to be a static string.
*
* Returns: (transfer full): a new #GstCapsFeatures
*
* Since: 1.26
*/
GstCapsFeatures *
gst_caps_features_new_single_static_str (const gchar * feature)
{
GstCapsFeatures *features;
g_return_val_if_fail (feature != NULL, NULL);
features = gst_caps_features_new_empty ();
gst_caps_features_add_static_str (features, feature);
return features;
}
/**
* gst_caps_features_new:
* @feature1: name of first feature to set
@ -289,6 +320,68 @@ gst_caps_features_new_valist (const gchar * feature1, va_list varargs)
return features;
}
/**
* gst_caps_features_new_static_str:
* @feature1: name of first feature to set
* @...: additional features
*
* Creates a new #GstCapsFeatures with the given features.
* The last argument must be %NULL.
*
* @feature1 and all other features need to be valid for the remaining lifetime
* of the process, e.g. have to be a static string.
*
* Returns: (transfer full): a new, empty #GstCapsFeatures
*
* Since: 1.26
*/
GstCapsFeatures *
gst_caps_features_new_static_str (const gchar * feature1, ...)
{
GstCapsFeatures *features;
va_list varargs;
g_return_val_if_fail (feature1 != NULL, NULL);
va_start (varargs, feature1);
features = gst_caps_features_new_static_str_valist (feature1, varargs);
va_end (varargs);
return features;
}
/**
* gst_caps_features_new_static_str_valist:
* @feature1: name of first feature to set
* @varargs: variable argument list
*
* Creates a new #GstCapsFeatures with the given features.
*
* @feature1 and all other features need to be valid for the remaining lifetime
* of the process, e.g. have to be a static string.
*
* Returns: (transfer full): a new, empty #GstCapsFeatures
*
* Since: 1.26
*/
GstCapsFeatures *
gst_caps_features_new_static_str_valist (const gchar * feature1,
va_list varargs)
{
GstCapsFeatures *features;
g_return_val_if_fail (feature1 != NULL, NULL);
features = gst_caps_features_new_empty ();
while (feature1) {
gst_caps_features_add_static_str (features, feature1);
feature1 = va_arg (varargs, const gchar *);
}
return features;
}
/**
* gst_caps_features_new_id:
* @feature1: name of first feature to set
@ -300,6 +393,8 @@ gst_caps_features_new_valist (const gchar * feature1, va_list varargs)
* Returns: (transfer full): a new, empty #GstCapsFeatures
*
* Since: 1.2
*
* Deprecated: 1.26: Use gst_caps_features_new_id_str().
*/
GstCapsFeatures *
gst_caps_features_new_id (GQuark feature1, ...)
@ -310,7 +405,10 @@ gst_caps_features_new_id (GQuark feature1, ...)
g_return_val_if_fail (feature1 != 0, NULL);
va_start (varargs, feature1);
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wdeprecated-declarations"
features = gst_caps_features_new_id_valist (feature1, varargs);
#pragma GCC diagnostic pop
va_end (varargs);
return features;
@ -326,6 +424,8 @@ gst_caps_features_new_id (GQuark feature1, ...)
* Returns: (transfer full): a new, empty #GstCapsFeatures
*
* Since: 1.2
*
* Deprecated: 1.26: Use gst_caps_features_new_id_str_valist().
*/
GstCapsFeatures *
gst_caps_features_new_id_valist (GQuark feature1, va_list varargs)
@ -337,13 +437,71 @@ gst_caps_features_new_id_valist (GQuark feature1, va_list varargs)
features = gst_caps_features_new_empty ();
while (feature1) {
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wdeprecated-declarations"
gst_caps_features_add_id (features, feature1);
#pragma GCC diagnostic pop
feature1 = va_arg (varargs, GQuark);
}
return features;
}
/**
* gst_caps_features_new_id_str:
* @feature1: name of first feature to set
* @...: additional features
*
* Creates a new #GstCapsFeatures with the given features.
* The last argument must be 0.
*
* Returns: (transfer full): a new, empty #GstCapsFeatures
*
* Since: 1.26
*/
GstCapsFeatures *
gst_caps_features_new_id_str (const GstIdStr * feature1, ...)
{
GstCapsFeatures *features;
va_list varargs;
g_return_val_if_fail (feature1 != NULL, NULL);
va_start (varargs, feature1);
features = gst_caps_features_new_id_str_valist (feature1, varargs);
va_end (varargs);
return features;
}
/**
* gst_caps_features_new_id_str_valist:
* @feature1: name of first feature to set
* @varargs: variable argument list
*
* Creates a new #GstCapsFeatures with the given features.
*
* Returns: (transfer full): a new, empty #GstCapsFeatures
*
* Since: 1.26
*/
GstCapsFeatures *
gst_caps_features_new_id_str_valist (const GstIdStr * feature1, va_list varargs)
{
GstCapsFeatures *features;
g_return_val_if_fail (feature1 != NULL, NULL);
features = gst_caps_features_new_empty ();
while (feature1) {
gst_caps_features_add_id_str (features, feature1);
feature1 = va_arg (varargs, const GstIdStr *);
}
return features;
}
/**
* gst_caps_features_set_parent_refcount:
* @features: a #GstCapsFeatures
@ -404,7 +562,8 @@ gst_caps_features_copy (const GstCapsFeatures * features)
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));
gst_caps_features_add_id_str (copy,
gst_caps_features_get_nth_id_str (features, i));
copy->is_any = features->is_any;
return copy;
@ -481,9 +640,9 @@ priv_gst_caps_features_append_to_gstring (const GstCapsFeatures * features,
n = features->array->len;
for (i = 0; i < n; i++) {
GQuark *quark = &g_array_index (features->array, GQuark, i);
const GstIdStr *feature = &g_array_index (features->array, GstIdStr, i);
g_string_append (s, g_quark_to_string (*quark));
g_string_append (s, gst_id_str_as_str (feature));
if (i + 1 < n)
g_string_append (s, ", ");
}
@ -611,15 +770,15 @@ const gchar *
gst_caps_features_get_nth (const GstCapsFeatures * features, guint i)
{
const gchar *feature;
GQuark quark;
const GstIdStr *feature_str;
g_return_val_if_fail (features != NULL, NULL);
quark = gst_caps_features_get_nth_id (features, i);
if (!quark)
feature_str = gst_caps_features_get_nth_id_str (features, i);
if (!feature_str)
return NULL;
feature = g_quark_to_string (quark);
feature = gst_id_str_as_str (feature_str);
return feature;
}
@ -633,18 +792,46 @@ gst_caps_features_get_nth (const GstCapsFeatures * features, guint i)
* Returns: The @i-th feature of @features.
*
* Since: 1.2
*
* Deprecated: 1.26: Use gst_caps_features_get_nth_id_str().
*/
GQuark
gst_caps_features_get_nth_id (const GstCapsFeatures * features, guint i)
{
GQuark *quark;
GQuark quark;
const GstIdStr *feature_str;
g_return_val_if_fail (features != NULL, 0);
g_return_val_if_fail (i < features->array->len, 0);
quark = &g_array_index (features->array, GQuark, i);
feature_str = gst_caps_features_get_nth_id_str (features, i);
return *quark;
quark = g_quark_from_string (gst_id_str_as_str (feature_str));
return quark;
}
/**
* gst_caps_features_get_nth_id_str:
* @features: a #GstCapsFeatures.
* @i: index of the feature
*
* Returns the @i-th feature of @features.
*
* Returns: The @i-th feature of @features.
*
* Since: 1.26
*/
const GstIdStr *
gst_caps_features_get_nth_id_str (const GstCapsFeatures * features, guint i)
{
const GstIdStr *feature;
g_return_val_if_fail (features != NULL, 0);
g_return_val_if_fail (i < features->array->len, 0);
feature = &g_array_index (features->array, GstIdStr, i);
return feature;
}
/**
@ -662,11 +849,18 @@ gboolean
gst_caps_features_contains (const GstCapsFeatures * features,
const gchar * feature)
{
GstIdStr s = GST_ID_STR_INIT;
gboolean res;
g_return_val_if_fail (features != NULL, FALSE);
g_return_val_if_fail (feature != NULL, FALSE);
return gst_caps_features_contains_id (features,
g_quark_from_string (feature));
// Not technically correct but the string is never leaving this scope and is never copied
gst_id_str_set_static_str (&s, feature);
res = gst_caps_features_contains_id_str (features, &s);
gst_id_str_clear (&s);
return res;
}
/**
@ -679,24 +873,54 @@ gst_caps_features_contains (const GstCapsFeatures * features,
* Returns: %TRUE if @features contains @feature.
*
* Since: 1.2
*
* Deprecated: 1.26: Use gst_caps_features_contains_id_str().
*/
gboolean
gst_caps_features_contains_id (const GstCapsFeatures * features, GQuark feature)
{
guint i, n;
GstIdStr s = GST_ID_STR_INIT;
g_return_val_if_fail (features != NULL, FALSE);
g_return_val_if_fail (feature != 0, FALSE);
gst_id_str_set_static_str (&s, g_quark_to_string (feature));
return gst_caps_features_contains_id_str (features, &s);
}
/**
* gst_caps_features_contains_id_str:
* @features: a #GstCapsFeatures.
* @feature: a feature
*
* Checks if @features contains @feature.
*
* Returns: %TRUE if @features contains @feature.
*
* Since: 1.26
*/
gboolean
gst_caps_features_contains_id_str (const GstCapsFeatures * features,
const GstIdStr * feature)
{
guint i, n;
g_return_val_if_fail (features != NULL, FALSE);
g_return_val_if_fail (feature != NULL, FALSE);
if (features->is_any)
return TRUE;
n = features->array->len;
if (n == 0)
return feature == _gst_caps_feature_memory_system_memory;
if (n == 0) {
return gst_id_str_is_equal (feature,
&_gst_caps_feature_memory_system_memory);
}
for (i = 0; i < n; i++) {
if (gst_caps_features_get_nth_id (features, i) == feature)
if (gst_id_str_is_equal (gst_caps_features_get_nth_id_str (features, i),
feature))
return TRUE;
}
@ -730,12 +954,12 @@ gst_caps_features_is_equal (const GstCapsFeatures * features1,
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))
&& gst_caps_features_contains_id_str (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))
&& gst_caps_features_contains_id_str (features1,
&_gst_caps_feature_memory_system_memory))
return TRUE;
if (features1->array->len != features2->array->len)
@ -743,8 +967,8 @@ gst_caps_features_is_equal (const GstCapsFeatures * features1,
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)))
if (!gst_caps_features_contains_id_str (features2,
gst_caps_features_get_nth_id_str (features1, i)))
return FALSE;
return TRUE;
@ -768,6 +992,30 @@ gst_caps_features_is_any (const GstCapsFeatures * features)
return features->is_any;
}
// Takes ownership of feature
static void
gst_caps_features_add_id_str_internal (GstCapsFeatures * features,
GstIdStr * feature)
{
if (!gst_caps_feature_name_is_valid (gst_id_str_as_str (feature))) {
g_warning ("Invalid caps feature name: %s", gst_id_str_as_str (feature));
gst_id_str_clear (feature);
return;
}
/* If features is empty it will contain sysmem, however
* we want to add it explicitly if it is attempted to be
* added as first features
*/
if (features->array->len > 0
&& gst_caps_features_contains_id_str (features, feature)) {
gst_id_str_clear (feature);
return;
}
g_array_append_val (features->array, *feature);
}
/**
* gst_caps_features_add:
* @features: a #GstCapsFeatures.
@ -780,12 +1028,44 @@ gst_caps_features_is_any (const GstCapsFeatures * features)
void
gst_caps_features_add (GstCapsFeatures * features, const gchar * feature)
{
GstIdStr s = GST_ID_STR_INIT;
g_return_if_fail (features != NULL);
g_return_if_fail (IS_MUTABLE (features));
g_return_if_fail (feature != NULL);
g_return_if_fail (!features->is_any);
gst_caps_features_add_id (features, g_quark_from_string (feature));
gst_id_str_set (&s, feature);
gst_caps_features_add_id_str_internal (features, &s);
}
/**
* gst_caps_features_add_static_str:
* @features: a #GstCapsFeatures.
* @feature: a feature.
*
* Adds @feature to @features.
*
* @feature needs to be valid for the remaining lifetime of the process, e.g. has
* to be a static string.
*
* Since: 1.26
*/
void
gst_caps_features_add_static_str (GstCapsFeatures * features,
const gchar * feature)
{
GstIdStr s = GST_ID_STR_INIT;
g_return_if_fail (features != NULL);
g_return_if_fail (IS_MUTABLE (features));
g_return_if_fail (feature != NULL);
g_return_if_fail (!features->is_any);
gst_id_str_set_static_str (&s, feature);
gst_caps_features_add_id_str_internal (features, &s);
}
/**
@ -796,29 +1076,47 @@ gst_caps_features_add (GstCapsFeatures * features, const gchar * feature)
* Adds @feature to @features.
*
* Since: 1.2
*
* Deprecated: 1.26: Use gst_caps_features_add_id_str().
*/
void
gst_caps_features_add_id (GstCapsFeatures * features, GQuark feature)
{
GstIdStr s = GST_ID_STR_INIT;
g_return_if_fail (features != NULL);
g_return_if_fail (IS_MUTABLE (features));
g_return_if_fail (feature != 0);
g_return_if_fail (!features->is_any);
if (!gst_caps_feature_name_is_valid (g_quark_to_string (feature))) {
g_warning ("Invalid caps feature name: %s", g_quark_to_string (feature));
return;
}
gst_id_str_set_static_str (&s, g_quark_to_string (feature));
/* If features is empty it will contain sysmem, however
* we want to add it explicitly if it is attempted to be
* added as first features
*/
if (features->array->len > 0
&& gst_caps_features_contains_id (features, feature))
return;
gst_caps_features_add_id_str_internal (features, &s);
}
g_array_append_val (features->array, feature);
/**
* gst_caps_features_add_id_str:
* @features: a #GstCapsFeatures.
* @feature: a feature.
*
* Adds @feature to @features.
*
* Since: 1.26
*/
void
gst_caps_features_add_id_str (GstCapsFeatures * features,
const GstIdStr * feature)
{
GstIdStr s = GST_ID_STR_INIT;
g_return_if_fail (features != NULL);
g_return_if_fail (IS_MUTABLE (features));
g_return_if_fail (feature != NULL);
g_return_if_fail (!features->is_any);
gst_id_str_copy_into (&s, feature);
gst_caps_features_add_id_str_internal (features, &s);
}
/**
@ -833,11 +1131,16 @@ gst_caps_features_add_id (GstCapsFeatures * features, GQuark feature)
void
gst_caps_features_remove (GstCapsFeatures * features, const gchar * feature)
{
GstIdStr s = GST_ID_STR_INIT;
g_return_if_fail (features != NULL);
g_return_if_fail (IS_MUTABLE (features));
g_return_if_fail (feature != NULL);
gst_caps_features_remove_id (features, g_quark_from_string (feature));
// Not technically correct but the string is never leaving this scope and is never copied
gst_id_str_set_static_str (&s, feature);
gst_caps_features_remove_id_str (features, &s);
gst_id_str_clear (&s);
}
/**
@ -848,21 +1151,48 @@ gst_caps_features_remove (GstCapsFeatures * features, const gchar * feature)
* Removes @feature from @features.
*
* Since: 1.2
*
* Deprecated: 1.26: Use gst_caps_features_remove_id_str().
*/
void
gst_caps_features_remove_id (GstCapsFeatures * features, GQuark feature)
{
guint i, n;
GstIdStr s = GST_ID_STR_INIT;
g_return_if_fail (features != NULL);
g_return_if_fail (IS_MUTABLE (features));
g_return_if_fail (feature != 0);
gst_id_str_set_static_str (&s, g_quark_to_string (feature));
gst_caps_features_remove_id_str (features, &s);
}
/**
* gst_caps_features_remove_id_str:
* @features: a #GstCapsFeatures.
* @feature: a feature.
*
* Removes @feature from @features.
*
* Since: 1.26
*/
void
gst_caps_features_remove_id_str (GstCapsFeatures * features,
const GstIdStr * feature)
{
guint i, n;
g_return_if_fail (features != NULL);
g_return_if_fail (IS_MUTABLE (features));
g_return_if_fail (feature != NULL);
n = features->array->len;
for (i = 0; i < n; i++) {
GQuark quark = gst_caps_features_get_nth_id (features, i);
const GstIdStr *f = gst_caps_features_get_nth_id_str (features, i);
if (quark == feature) {
if (gst_id_str_is_equal (f, feature)) {
g_array_remove_index_fast (features->array, i);
return;
}

View file

@ -23,6 +23,7 @@
#include <gst/gstconfig.h>
#include <gst/glib-compat.h>
#include <gst/gstidstr.h>
#include <glib-object.h>
#include <glib.h>
@ -60,18 +61,33 @@ GstCapsFeatures * gst_caps_features_new_any (void);
GST_API
GstCapsFeatures * gst_caps_features_new_single (const gchar *feature) G_GNUC_MALLOC;
GST_API
GstCapsFeatures * gst_caps_features_new_single_static_str (const gchar *feature) G_GNUC_MALLOC;
GST_API
GstCapsFeatures * gst_caps_features_new (const gchar *feature1, ...) G_GNUC_NULL_TERMINATED;
GST_API
GstCapsFeatures * gst_caps_features_new_static_str (const gchar *feature1, ...) G_GNUC_NULL_TERMINATED;
GST_API
GstCapsFeatures * gst_caps_features_new_valist (const gchar *feature1, va_list varargs);
GST_API
GstCapsFeatures * gst_caps_features_new_static_str_valist (const gchar *feature1, va_list varargs);
GST_DEPRECATED_FOR(gst_caps_features_new_id_str)
GstCapsFeatures * gst_caps_features_new_id (GQuark feature1, ...);
GST_API
GST_DEPRECATED_FOR(gst_caps_features_new_id_str_valist)
GstCapsFeatures * gst_caps_features_new_id_valist (GQuark feature1, va_list varargs);
GST_API
GstCapsFeatures * gst_caps_features_new_id_str (const GstIdStr * feature1, ...);
GST_API
GstCapsFeatures * gst_caps_features_new_id_str_valist (const GstIdStr * feature1, va_list varargs);
GST_API
gboolean gst_caps_features_set_parent_refcount (GstCapsFeatures *features, gint * refcount);
@ -93,15 +109,21 @@ guint gst_caps_features_get_size (const GstCapsFeatures * features);
GST_API
const gchar * gst_caps_features_get_nth (const GstCapsFeatures * features, guint i);
GST_API
GST_DEPRECATED_FOR(gst_caps_features_get_nth_id_str)
GQuark gst_caps_features_get_nth_id (const GstCapsFeatures * features, guint i);
GST_API
const GstIdStr * gst_caps_features_get_nth_id_str (const GstCapsFeatures * features, guint i);
GST_API
gboolean gst_caps_features_contains (const GstCapsFeatures * features, const gchar * feature);
GST_API
GST_DEPRECATED_FOR(gst_caps_features_contains_id_str)
gboolean gst_caps_features_contains_id (const GstCapsFeatures * features, GQuark feature);
GST_API
gboolean gst_caps_features_contains_id_str (const GstCapsFeatures * features, const GstIdStr * feature);
GST_API
gboolean gst_caps_features_is_equal (const GstCapsFeatures * features1, const GstCapsFeatures * features2);
@ -112,14 +134,23 @@ GST_API
void gst_caps_features_add (GstCapsFeatures * features, const gchar * feature);
GST_API
void gst_caps_features_add_id ( GstCapsFeatures * features, GQuark feature);
void gst_caps_features_add_static_str (GstCapsFeatures * features, const gchar * feature);
GST_DEPRECATED_FOR(gst_caps_features_add_id_str)
void gst_caps_features_add_id (GstCapsFeatures * features, GQuark feature);
GST_API
void gst_caps_features_add_id_str (GstCapsFeatures * features, const GstIdStr * feature);
GST_API
void gst_caps_features_remove (GstCapsFeatures * features, const gchar * feature);
GST_API
GST_DEPRECATED_FOR(gst_caps_features_remove_id_str)
void gst_caps_features_remove_id (GstCapsFeatures * features, GQuark feature);
GST_API
void gst_caps_features_remove_id_str (GstCapsFeatures * features, const GstIdStr * feature);
G_DEFINE_AUTOPTR_CLEANUP_FUNC(GstCapsFeatures, gst_caps_features_free)
G_END_DECLS