*
* 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., 59 Temple Place - Suite 330,
- * Boston, MA 02111-1307, USA.
+ * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
+ * Boston, MA 02110-1301, USA.
*/
/**
* SECTION:gstcaps
+ * @title: GstCaps
* @short_description: Structure describing sets of media formats
* @see_also: #GstStructure, #GstMiniObject
*
* given pad can handle. They are also stored in the #GstRegistry along with
* a description of the #GstElement.
*
- * Caps are exposed on the element pads using the gst_pad_get_caps() pad
+ * Caps are exposed on the element pads using the gst_pad_query_caps() pad
* function. This function describes the possible types that the pad can
* handle or produce at runtime.
*
* A #GstCaps can be constructed with the following code fragment:
- *
- * <example>
- * <title>Creating caps</title>
- * <programlisting>
- * GstCaps *caps;
- * caps = gst_caps_new_simple ("video/x-raw",
- * "format", G_TYPE_STRING, "I420",
- * "framerate", GST_TYPE_FRACTION, 25, 1,
- * "pixel-aspect-ratio", GST_TYPE_FRACTION, 1, 1,
- * "width", G_TYPE_INT, 320,
- * "height", G_TYPE_INT, 240,
- * NULL);
- * </programlisting>
- * </example>
+ * |[<!-- language="C" -->
+ * GstCaps *caps = gst_caps_new_simple ("video/x-raw",
+ * "format", G_TYPE_STRING, "I420",
+ * "framerate", GST_TYPE_FRACTION, 25, 1,
+ * "pixel-aspect-ratio", GST_TYPE_FRACTION, 1, 1,
+ * "width", G_TYPE_INT, 320,
+ * "height", G_TYPE_INT, 240,
+ * NULL);
+ * ]|
*
* A #GstCaps is fixed when it has no properties with ranges or lists. Use
* gst_caps_is_fixed() to test for fixed caps. Fixed caps can be used in a
* Various methods exist to work with the media types such as subtracting
* or intersecting.
*
- * Last reviewed on 2011-03-28 (0.11.3)
+ * Be aware that the current #GstCaps / #GstStructure serialization into string
+ * has limited support for nested #GstCaps / #GstStructure fields. It can only
+ * support one level of nesting. Using more levels will lead to unexpected
+ * behavior when using serialization features, such as gst_caps_to_string() or
+ * gst_value_serialize() and their counterparts.
*/
#ifdef HAVE_CONFIG_H
#define DEBUG_REFCOUNT
+typedef struct _GstCapsArrayElement
+{
+ GstStructure *structure;
+ GstCapsFeatures *features;
+} GstCapsArrayElement;
+
typedef struct _GstCapsImpl
{
GstCaps caps;
- GPtrArray *array;
+ GArray *array;
} GstCapsImpl;
#define GST_CAPS_ARRAY(c) (((GstCapsImpl *)(c))->array)
/* same as gst_caps_is_any () */
#define CAPS_IS_ANY(caps) \
- (GST_CAPS_FLAGS(caps) & GST_CAPS_FLAG_ANY)
+ (!!(GST_CAPS_FLAGS(caps) & GST_CAPS_FLAG_ANY))
/* same as gst_caps_is_empty () */
#define CAPS_IS_EMPTY(caps) \
#define CAPS_IS_EMPTY_SIMPLE(caps) \
((GST_CAPS_ARRAY (caps) == NULL) || (GST_CAPS_LEN (caps) == 0))
+#define gst_caps_features_copy_conditional(f) ((f && (gst_caps_features_is_any (f) || !gst_caps_features_is_equal (f, GST_CAPS_FEATURES_MEMORY_SYSTEM_MEMORY))) ? gst_caps_features_copy (f) : NULL)
+
/* quick way to get a caps structure at an index without doing a type or array
* length check */
#define gst_caps_get_structure_unchecked(caps, index) \
- ((GstStructure *)g_ptr_array_index (GST_CAPS_ARRAY (caps), (index)))
+ (g_array_index (GST_CAPS_ARRAY (caps), GstCapsArrayElement, (index)).structure)
+#define gst_caps_get_features_storage_unchecked(caps, index) \
+ (&g_array_index (GST_CAPS_ARRAY (caps), GstCapsArrayElement, (index)).features)
+#define gst_caps_get_features_unchecked(caps, index) \
+ (g_atomic_pointer_get (gst_caps_get_features_storage_unchecked (caps, index)))
/* quick way to append a structure without checking the args */
-#define gst_caps_append_structure_unchecked(caps, structure) G_STMT_START{\
- GstStructure *__s=structure; \
- if (gst_structure_set_parent_refcount (__s, &GST_MINI_OBJECT_REFCOUNT(caps))) \
- g_ptr_array_add (GST_CAPS_ARRAY (caps), __s); \
+#define gst_caps_append_structure_unchecked(caps, s, f) G_STMT_START{\
+ GstCapsArrayElement __e={s, f}; \
+ if (gst_structure_set_parent_refcount (__e.structure, &GST_MINI_OBJECT_REFCOUNT(caps)) && \
+ (!__e.features || gst_caps_features_set_parent_refcount (__e.features, &GST_MINI_OBJECT_REFCOUNT(caps)))) \
+ g_array_append_val (GST_CAPS_ARRAY (caps), __e); \
}G_STMT_END
/* lock to protect multiple invocations of static caps to caps conversion */
G_TYPE_STRING, gst_caps_transform_to_string);
}
+void
+_priv_gst_caps_cleanup (void)
+{
+ gst_caps_unref (_gst_caps_any);
+ _gst_caps_any = NULL;
+ gst_caps_unref (_gst_caps_none);
+ _gst_caps_none = NULL;
+}
+
+GstCapsFeatures *
+__gst_caps_get_features_unchecked (const GstCaps * caps, guint idx)
+{
+ return gst_caps_get_features_unchecked (caps, idx);
+}
+
static GstCaps *
_gst_caps_copy (const GstCaps * caps)
{
GstCaps *newcaps;
GstStructure *structure;
+ GstCapsFeatures *features;
guint i, n;
g_return_val_if_fail (GST_IS_CAPS (caps), NULL);
GST_CAPS_FLAGS (newcaps) = GST_CAPS_FLAGS (caps);
n = GST_CAPS_LEN (caps);
- GST_CAT_DEBUG_OBJECT (GST_CAT_PERFORMANCE, caps, "doing copy %p -> %p",
- caps, newcaps);
+ GST_CAT_DEBUG (GST_CAT_PERFORMANCE, "doing copy %p -> %p", caps, newcaps);
for (i = 0; i < n; i++) {
structure = gst_caps_get_structure_unchecked (caps, i);
- gst_caps_append_structure (newcaps, gst_structure_copy (structure));
+ features = gst_caps_get_features_unchecked (caps, i);
+ gst_caps_append_structure_full (newcaps, gst_structure_copy (structure),
+ gst_caps_features_copy_conditional (features));
}
return newcaps;
_gst_caps_free (GstCaps * caps)
{
GstStructure *structure;
+ GstCapsFeatures *features;
guint i, len;
/* The refcount must be 0, but since we're only called by gst_caps_unref,
/* This can be used to get statistics about caps sizes */
/*GST_CAT_INFO (GST_CAT_CAPS, "caps size: %d", len); */
for (i = 0; i < len; i++) {
- structure = (GstStructure *) gst_caps_get_structure_unchecked (caps, i);
+ structure = gst_caps_get_structure_unchecked (caps, i);
gst_structure_set_parent_refcount (structure, NULL);
gst_structure_free (structure);
+ features = gst_caps_get_features_unchecked (caps, i);
+ if (features) {
+ gst_caps_features_set_parent_refcount (features, NULL);
+ gst_caps_features_free (features);
+ }
}
- g_ptr_array_free (GST_CAPS_ARRAY (caps), TRUE);
+ g_array_free (GST_CAPS_ARRAY (caps), TRUE);
#ifdef DEBUG_REFCOUNT
- GST_CAT_LOG (GST_CAT_CAPS, "freeing caps %p", caps);
+ GST_CAT_TRACE (GST_CAT_CAPS, "freeing caps %p", caps);
#endif
- g_slice_free1 (GST_MINI_OBJECT_SIZE (caps), caps);
+
+#ifdef USE_POISONING
+ memset (caps, 0xff, sizeof (GstCapsImpl));
+#endif
+
+ g_slice_free1 (sizeof (GstCapsImpl), caps);
}
static void
-gst_caps_init (GstCaps * caps, gsize size)
+gst_caps_init (GstCaps * caps)
{
- gst_mini_object_init (GST_MINI_OBJECT_CAST (caps), _gst_caps_type, size);
-
- caps->mini_object.copy = (GstMiniObjectCopyFunction) _gst_caps_copy;
- caps->mini_object.dispose = NULL;
- caps->mini_object.free = (GstMiniObjectFreeFunction) _gst_caps_free;
+ gst_mini_object_init (GST_MINI_OBJECT_CAST (caps), 0, _gst_caps_type,
+ (GstMiniObjectCopyFunction) _gst_caps_copy, NULL,
+ (GstMiniObjectFreeFunction) _gst_caps_free);
/* the 32 has been determined by logging caps sizes in _gst_caps_free
* but g_ptr_array uses 16 anyway if it expands once, so this does not help
* in practice
* GST_CAPS_ARRAY (caps) = g_ptr_array_sized_new (32);
*/
- GST_CAPS_ARRAY (caps) = g_ptr_array_new ();
+ GST_CAPS_ARRAY (caps) =
+ g_array_new (FALSE, TRUE, sizeof (GstCapsArrayElement));
}
/**
caps = (GstCaps *) g_slice_new (GstCapsImpl);
- gst_caps_init (caps, sizeof (GstCapsImpl));
+ gst_caps_init (caps);
#ifdef DEBUG_REFCOUNT
GST_CAT_TRACE (GST_CAT_CAPS, "created caps %p", caps);
caps = gst_caps_new_empty ();
structure = gst_structure_new_empty (media_type);
if (structure)
- gst_caps_append_structure_unchecked (caps, structure);
+ gst_caps_append_structure_unchecked (caps, structure, NULL);
return caps;
}
va_end (var_args);
if (structure)
- gst_caps_append_structure_unchecked (caps, structure);
+ gst_caps_append_structure_unchecked (caps, structure, NULL);
else
gst_caps_replace (&caps, NULL);
* @...: additional structures to add
*
* Creates a new #GstCaps and adds all the structures listed as
- * arguments. The list must be NULL-terminated. The structures
+ * arguments. The list must be %NULL-terminated. The structures
* are not copied; the returned #GstCaps owns the structures.
*
* Returns: (transfer full): the new #GstCaps
* @var_args: additional structures to add
*
* Creates a new #GstCaps and adds all the structures listed as
- * arguments. The list must be NULL-terminated. The structures
+ * arguments. The list must be %NULL-terminated. The structures
* are not copied; the returned #GstCaps owns the structures.
*
* Returns: (transfer full): the new #GstCaps
caps = gst_caps_new_empty ();
while (structure) {
- gst_caps_append_structure_unchecked (caps, structure);
+ gst_caps_append_structure_unchecked (caps, structure, NULL);
structure = va_arg (var_args, GstStructure *);
}
*
* Converts a #GstStaticCaps to a #GstCaps.
*
- * Returns: (transfer full): a pointer to the #GstCaps. Unref after usage.
- * Since the core holds an additional ref to the returned caps,
- * use gst_caps_make_writable() on the returned caps to modify it.
+ * Returns: (transfer full) (nullable): a pointer to the #GstCaps. Unref
+ * after usage. Since the core holds an additional ref to the
+ * returned caps, use gst_caps_make_writable() on the returned caps
+ * to modify it.
*/
GstCaps *
gst_static_caps_get (GstStaticCaps * static_caps)
*caps = gst_caps_from_string (string);
/* convert to string */
- if (G_UNLIKELY (*caps == NULL))
+ if (G_UNLIKELY (*caps == NULL)) {
g_critical ("Could not convert static caps \"%s\"", string);
+ goto done;
+ }
+
+ /* Caps generated from static caps are usually leaked */
+ GST_MINI_OBJECT_FLAG_SET (*caps, GST_MINI_OBJECT_FLAG_MAY_BE_LEAKED);
GST_CAT_TRACE (GST_CAT_CAPS, "created %p from string %s", static_caps,
string);
/* manipulation */
+static void
+gst_caps_remove_and_get_structure_and_features (GstCaps * caps, guint idx,
+ GstStructure ** s, GstCapsFeatures ** f)
+{
+ GstStructure *s_;
+ GstCapsFeatures *f_;
+
+ s_ = gst_caps_get_structure_unchecked (caps, idx);
+ f_ = gst_caps_get_features_unchecked (caps, idx);
+
+ /* don't use index_fast, gst_caps_simplify relies on the order */
+ g_array_remove_index (GST_CAPS_ARRAY (caps), idx);
+
+ gst_structure_set_parent_refcount (s_, NULL);
+ if (f_) {
+ gst_caps_features_set_parent_refcount (f_, NULL);
+ }
+
+ *s = s_;
+ *f = f_;
+}
+
static GstStructure *
gst_caps_remove_and_get_structure (GstCaps * caps, guint idx)
{
- /* don't use index_fast, gst_caps_simplify relies on the order */
- GstStructure *s = g_ptr_array_remove_index (GST_CAPS_ARRAY (caps), idx);
+ GstStructure *s;
+ GstCapsFeatures *f;
+
+ gst_caps_remove_and_get_structure_and_features (caps, idx, &s, &f);
+
+ if (f)
+ gst_caps_features_free (f);
- gst_structure_set_parent_refcount (s, NULL);
return s;
}
* Retrieves the structure with the given index from the list of structures
* contained in @caps. The caller becomes the owner of the returned structure.
*
- * Returns: (transfer full): a pointer to the #GstStructure corresponding
- * to @index.
- *
- * Since: 0.10.30
+ * Returns: (transfer full) (nullable): a pointer to the #GstStructure
+ * corresponding to @index.
*/
GstStructure *
gst_caps_steal_structure (GstCaps * caps, guint index)
gst_caps_append (GstCaps * caps1, GstCaps * caps2)
{
GstStructure *structure;
+ GstCapsFeatures *features;
int i;
g_return_if_fail (GST_IS_CAPS (caps1));
caps2 = gst_caps_make_writable (caps2);
for (i = GST_CAPS_LEN (caps2); i; i--) {
- structure = gst_caps_remove_and_get_structure (caps2, 0);
- gst_caps_append_structure_unchecked (caps1, structure);
+ gst_caps_remove_and_get_structure_and_features (caps2, 0, &structure,
+ &features);
+ gst_caps_append_structure_unchecked (caps1, structure, features);
}
gst_caps_unref (caps2); /* guaranteed to free it */
}
* If either caps is ANY, the resulting caps will be ANY.
*
* Returns: (transfer full): the merged caps.
- *
- * Since: 0.10.10
*/
GstCaps *
gst_caps_merge (GstCaps * caps1, GstCaps * caps2)
{
GstStructure *structure;
+ GstCapsFeatures *features;
int i;
GstCaps *result;
caps2 = gst_caps_make_writable (caps2);
for (i = GST_CAPS_LEN (caps2); i; i--) {
- structure = gst_caps_remove_and_get_structure (caps2, 0);
- caps1 = gst_caps_merge_structure (caps1, structure);
+ gst_caps_remove_and_get_structure_and_features (caps2, 0, &structure,
+ &features);
+ caps1 = gst_caps_merge_structure_full (caps1, structure, features);
}
gst_caps_unref (caps2);
result = caps1;
g_return_if_fail (IS_WRITABLE (caps));
if (G_LIKELY (structure)) {
- gst_caps_append_structure_unchecked (caps, structure);
+ gst_caps_append_structure_unchecked (caps, structure, NULL);
+ }
+}
+
+/**
+ * gst_caps_append_structure_full:
+ * @caps: the #GstCaps that will be appended to
+ * @structure: (transfer full): the #GstStructure to append
+ * @features: (transfer full) (allow-none): the #GstCapsFeatures to append
+ *
+ * Appends @structure with @features to @caps. The structure is not copied; @caps
+ * becomes the owner of @structure.
+ *
+ * Since: 1.2
+ */
+void
+gst_caps_append_structure_full (GstCaps * caps, GstStructure * structure,
+ GstCapsFeatures * features)
+{
+ g_return_if_fail (GST_IS_CAPS (caps));
+ g_return_if_fail (IS_WRITABLE (caps));
+
+ if (G_LIKELY (structure)) {
+ gst_caps_append_structure_unchecked (caps, structure, features);
}
}
* @caps: the #GstCaps to remove from
* @idx: Index of the structure to remove
*
- * removes the stucture with the given index from the list of structures
+ * removes the structure with the given index from the list of structures
* contained in @caps.
*/
void
gst_caps_merge_structure (GstCaps * caps, GstStructure * structure)
{
GstStructure *structure1;
+ GstCapsFeatures *features1;
+ int i;
+ gboolean unique = TRUE;
+
+ g_return_val_if_fail (GST_IS_CAPS (caps), NULL);
+
+ if (G_UNLIKELY (structure == NULL))
+ return caps;
+
+ /* check each structure */
+ for (i = GST_CAPS_LEN (caps) - 1; i >= 0; i--) {
+ structure1 = gst_caps_get_structure_unchecked (caps, i);
+ features1 = gst_caps_get_features_unchecked (caps, i);
+ if (!features1)
+ features1 = GST_CAPS_FEATURES_MEMORY_SYSTEM_MEMORY;
+
+ /* if structure is a subset of structure1 and the
+ * there are no existing features, then skip it */
+ if (gst_caps_features_is_equal (features1,
+ GST_CAPS_FEATURES_MEMORY_SYSTEM_MEMORY)
+ && gst_structure_is_subset (structure, structure1)) {
+ unique = FALSE;
+ break;
+ }
+ }
+ if (unique) {
+ caps = gst_caps_make_writable (caps);
+ gst_caps_append_structure_unchecked (caps, structure, NULL);
+ } else {
+ gst_structure_free (structure);
+ }
+ return caps;
+}
+
+/**
+ * gst_caps_merge_structure_full:
+ * @caps: (transfer full): the #GstCaps to merge into
+ * @structure: (transfer full): the #GstStructure to merge
+ * @features: (transfer full) (allow-none): the #GstCapsFeatures to merge
+ *
+ * Appends @structure with @features to @caps if its not already expressed by @caps.
+ *
+ * Returns: (transfer full): the merged caps.
+ *
+ * Since: 1.2
+ */
+GstCaps *
+gst_caps_merge_structure_full (GstCaps * caps, GstStructure * structure,
+ GstCapsFeatures * features)
+{
+ GstStructure *structure1;
+ GstCapsFeatures *features1, *features_tmp;
int i;
gboolean unique = TRUE;
if (G_UNLIKELY (structure == NULL))
return caps;
+ /* To make comparisons easier below */
+ features_tmp = features ? features : GST_CAPS_FEATURES_MEMORY_SYSTEM_MEMORY;
+
/* check each structure */
for (i = GST_CAPS_LEN (caps) - 1; i >= 0; i--) {
structure1 = gst_caps_get_structure_unchecked (caps, i);
- /* if structure is a subset of structure1, then skip it */
- if (gst_structure_is_subset (structure, structure1)) {
+ features1 = gst_caps_get_features_unchecked (caps, i);
+ if (!features1)
+ features1 = GST_CAPS_FEATURES_MEMORY_SYSTEM_MEMORY;
+ /* if structure is a subset of structure1 and the
+ * the features are a subset, then skip it */
+ /* FIXME: We only skip if none of the features are
+ * ANY and are still equal. That way all ANY structures
+ * show up in the caps and no non-ANY structures are
+ * swallowed by ANY structures
+ */
+ if (((!gst_caps_features_is_any (features_tmp)
+ || gst_caps_features_is_any (features1))
+ && gst_caps_features_is_equal (features_tmp, features1))
+ && gst_structure_is_subset (structure, structure1)) {
unique = FALSE;
break;
}
}
if (unique) {
caps = gst_caps_make_writable (caps);
- gst_caps_append_structure_unchecked (caps, structure);
+ gst_caps_append_structure_unchecked (caps, structure, features);
} else {
gst_structure_free (structure);
+ if (features)
+ gst_caps_features_free (features);
}
return caps;
}
}
/**
+ * gst_caps_get_features:
+ * @caps: a #GstCaps
+ * @index: the index of the structure
+ *
+ * Finds the features in @caps that has the index @index, and
+ * returns it.
+ *
+ * WARNING: This function takes a const GstCaps *, but returns a
+ * non-const GstCapsFeatures *. This is for programming convenience --
+ * the caller should be aware that structures inside a constant
+ * #GstCaps should not be modified. However, if you know the caps
+ * are writable, either because you have just copied them or made
+ * them writable with gst_caps_make_writable(), you may modify the
+ * features returned in the usual way, e.g. with functions like
+ * gst_caps_features_add().
+ *
+ * You do not need to free or unref the structure returned, it
+ * belongs to the #GstCaps.
+ *
+ * Returns: (transfer none) (nullable): a pointer to the #GstCapsFeatures
+ * corresponding to @index
+ *
+ * Since: 1.2
+ */
+GstCapsFeatures *
+gst_caps_get_features (const GstCaps * caps, guint index)
+{
+ GstCapsFeatures *features;
+
+ g_return_val_if_fail (GST_IS_CAPS (caps), NULL);
+ g_return_val_if_fail (index < GST_CAPS_LEN (caps), NULL);
+
+ features = gst_caps_get_features_unchecked (caps, index);
+ if (!features) {
+ GstCapsFeatures **storage;
+
+ /* We have to do some atomic pointer magic here as the caps
+ * might not be writable and someone else calls this function
+ * at the very same time */
+ features = gst_caps_features_copy (GST_CAPS_FEATURES_MEMORY_SYSTEM_MEMORY);
+ gst_caps_features_set_parent_refcount (features, &GST_CAPS_REFCOUNT (caps));
+
+ storage = gst_caps_get_features_storage_unchecked (caps, index);
+ if (!g_atomic_pointer_compare_and_exchange (storage, NULL, features)) {
+ /* Someone did the same we just tried in the meantime */
+ gst_caps_features_set_parent_refcount (features, NULL);
+ gst_caps_features_free (features);
+
+ features = gst_caps_get_features_unchecked (caps, index);
+ g_assert (features != NULL);
+ }
+ }
+
+ return features;
+}
+
+/**
+ * gst_caps_set_features:
+ * @caps: a #GstCaps
+ * @index: the index of the structure
+ * @features: (allow-none) (transfer full): the #GstCapsFeatures to set
+ *
+ * Sets the #GstCapsFeatures @features for the structure at @index.
+ *
+ * Since: 1.2
+ */
+void
+gst_caps_set_features (GstCaps * caps, guint index, GstCapsFeatures * features)
+{
+ GstCapsFeatures **storage, *old;
+
+ g_return_if_fail (caps != NULL);
+ g_return_if_fail (index <= gst_caps_get_size (caps));
+ g_return_if_fail (IS_WRITABLE (caps));
+
+ storage = gst_caps_get_features_storage_unchecked (caps, index);
+ /* Not much problem here as caps are writable */
+ old = g_atomic_pointer_get (storage);
+ g_atomic_pointer_set (storage, features);
+
+ if (features)
+ gst_caps_features_set_parent_refcount (features, &GST_CAPS_REFCOUNT (caps));
+
+ if (old) {
+ gst_caps_features_set_parent_refcount (old, NULL);
+ gst_caps_features_free (old);
+ }
+}
+
+/**
+ * gst_caps_set_features_simple:
+ * @caps: a #GstCaps
+ * @features: (allow-none) (transfer full): the #GstCapsFeatures to set
+ *
+ * Sets the #GstCapsFeatures @features for all the structures of @caps.
+ *
+ * Since: 1.16
+ */
+void
+gst_caps_set_features_simple (GstCaps * caps, GstCapsFeatures * features)
+{
+ guint i;
+ guint n;
+
+ g_return_if_fail (caps != NULL);
+ g_return_if_fail (IS_WRITABLE (caps));
+
+ n = gst_caps_get_size (caps);
+
+ for (i = 0; i < n; i++) {
+ GstCapsFeatures *f;
+
+ /* Transfer ownership of @features to the last structure */
+ if (features && i < n - 1)
+ f = gst_caps_features_copy (features);
+ else
+ f = features;
+
+ gst_caps_set_features (caps, i, f);
+ }
+}
+
+/**
* gst_caps_copy_nth:
* @caps: the #GstCaps to copy
* @nth: the nth structure to copy
* contained in @caps.
*
* Returns: (transfer full): the new #GstCaps
+ *
+ * Since: 1.16
*/
GstCaps *
gst_caps_copy_nth (const GstCaps * caps, guint nth)
{
GstCaps *newcaps;
GstStructure *structure;
+ GstCapsFeatures *features;
g_return_val_if_fail (GST_IS_CAPS (caps), NULL);
if (G_LIKELY (GST_CAPS_LEN (caps) > nth)) {
structure = gst_caps_get_structure_unchecked (caps, nth);
+ features = gst_caps_get_features_unchecked (caps, nth);
gst_caps_append_structure_unchecked (newcaps,
- gst_structure_copy (structure));
+ gst_structure_copy (structure),
+ gst_caps_features_copy_conditional (features));
}
return newcaps;
* Discard all but the first structure from @caps. Useful when
* fixating.
*
+ * This function takes ownership of @caps and will call gst_caps_make_writable()
+ * on it if necessary, so you must not use @caps afterwards unless you keep an
+ * additional reference to it with gst_caps_ref().
+ *
* Returns: (transfer full): truncated caps
*/
GstCaps *
* Sets the given @field on all structures of @caps to the given @value.
* This is a convenience function for calling gst_structure_set_value() on
* all structures of @caps.
- *
- * Since: 0.10.26
**/
void
gst_caps_set_value (GstCaps * caps, const char *field, const GValue * value)
* @varargs: additional parameters
*
* Sets fields in a #GstCaps. The arguments must be passed in the same
- * manner as gst_structure_set(), and be NULL-terminated.
- * <note>Prior to GStreamer version 0.10.26, this function failed when
- * @caps was not simple. If your code needs to work with those versions
- * of GStreamer, you may only call this function when GST_CAPS_IS_SIMPLE()
- * is %TRUE for @caps.</note>
+ * manner as gst_structure_set(), and be %NULL-terminated.
*/
void
gst_caps_set_simple_valist (GstCaps * caps, const char *field, va_list varargs)
G_VALUE_COLLECT_INIT (&value, type, varargs, 0, &err);
if (G_UNLIKELY (err)) {
g_critical ("%s", err);
+ g_free (err);
return;
}
* @...: additional parameters
*
* Sets fields in a #GstCaps. The arguments must be passed in the same
- * manner as gst_structure_set(), and be NULL-terminated.
- * <note>Prior to GStreamer version 0.10.26, this function failed when
- * @caps was not simple. If your code needs to work with those versions
- * of GStreamer, you may only call this function when GST_CAPS_IS_SIMPLE()
- * is %TRUE for @caps.</note>
+ * manner as gst_structure_set(), and be %NULL-terminated.
*/
void
gst_caps_set_simple (GstCaps * caps, const char *field, ...)
*
* Determines if @caps represents any media format.
*
- * Returns: TRUE if @caps represents any format.
+ * Returns: %TRUE if @caps represents any format.
*/
gboolean
gst_caps_is_any (const GstCaps * caps)
*
* Determines if @caps represents no media formats.
*
- * Returns: TRUE if @caps represents no formats.
+ * Returns: %TRUE if @caps represents no formats.
*/
gboolean
gst_caps_is_empty (const GstCaps * caps)
* one structure, and each field in the structure describes a fixed type.
* Examples of non-fixed types are GST_TYPE_INT_RANGE and GST_TYPE_LIST.
*
- * Returns: TRUE if @caps is fixed
+ * Returns: %TRUE if @caps is fixed
*/
gboolean
gst_caps_is_fixed (const GstCaps * caps)
{
GstStructure *structure;
+ GstCapsFeatures *features;
g_return_val_if_fail (GST_IS_CAPS (caps), FALSE);
if (GST_CAPS_LEN (caps) != 1)
return FALSE;
+ features = gst_caps_get_features_unchecked (caps, 0);
+ if (features && gst_caps_features_is_any (features))
+ return FALSE;
+
structure = gst_caps_get_structure_unchecked (caps, 0);
return gst_structure_foreach (structure, gst_caps_is_fixed_foreach, NULL);
* Tests if two #GstCaps are equal. This function only works on fixed
* #GstCaps.
*
- * Returns: TRUE if the arguments represent the same format
+ * Returns: %TRUE if the arguments represent the same format
*/
gboolean
gst_caps_is_equal_fixed (const GstCaps * caps1, const GstCaps * caps2)
{
GstStructure *struct1, *struct2;
+ GstCapsFeatures *features1, *features2;
g_return_val_if_fail (gst_caps_is_fixed (caps1), FALSE);
g_return_val_if_fail (gst_caps_is_fixed (caps2), FALSE);
struct1 = gst_caps_get_structure_unchecked (caps1, 0);
+ features1 = gst_caps_get_features_unchecked (caps1, 0);
+ if (!features1)
+ features1 = GST_CAPS_FEATURES_MEMORY_SYSTEM_MEMORY;
struct2 = gst_caps_get_structure_unchecked (caps2, 0);
+ features2 = gst_caps_get_features_unchecked (caps2, 0);
+ if (!features2)
+ features2 = GST_CAPS_FEATURES_MEMORY_SYSTEM_MEMORY;
- return gst_structure_is_equal (struct1, struct2);
+ return gst_structure_is_equal (struct1, struct2) &&
+ gst_caps_features_is_equal (features1, features2);
}
/**
* every media format that is in the first is also contained in the
* second. That is, @caps1 is a subset of @caps2.
*
- * Returns: TRUE if @caps1 is a subset of @caps2.
+ * Returns: %TRUE if @caps1 is a subset of @caps2.
*/
gboolean
gst_caps_is_always_compatible (const GstCaps * caps1, const GstCaps * caps2)
* @superset: a potentially greater #GstCaps
*
* Checks if all caps represented by @subset are also represented by @superset.
- * <note>This function does not work reliably if optional properties for caps
- * are included on one caps and omitted on the other.</note>
*
* Returns: %TRUE if @subset is a subset of @superset
*/
gst_caps_is_subset (const GstCaps * subset, const GstCaps * superset)
{
GstStructure *s1, *s2;
+ GstCapsFeatures *f1, *f2;
gboolean ret = TRUE;
gint i, j;
for (i = GST_CAPS_LEN (subset) - 1; i >= 0; i--) {
for (j = GST_CAPS_LEN (superset) - 1; j >= 0; j--) {
s1 = gst_caps_get_structure_unchecked (subset, i);
+ f1 = gst_caps_get_features_unchecked (subset, i);
+ if (!f1)
+ f1 = GST_CAPS_FEATURES_MEMORY_SYSTEM_MEMORY;
s2 = gst_caps_get_structure_unchecked (superset, j);
- if (gst_structure_is_subset (s1, s2)) {
+ f2 = gst_caps_get_features_unchecked (superset, j);
+ if (!f2)
+ f2 = GST_CAPS_FEATURES_MEMORY_SYSTEM_MEMORY;
+ if ((!gst_caps_features_is_any (f1) || gst_caps_features_is_any (f2)) &&
+ gst_caps_features_is_equal (f1, f2)
+ && gst_structure_is_subset (s1, s2)) {
/* If we found a superset, continue with the next
* subset structure */
break;
* for more information.
*
* Returns: %TRUE if @structure is a subset of @caps
- *
- * Since: 0.10.36
*/
gboolean
gst_caps_is_subset_structure (const GstCaps * caps,
}
/**
+ * gst_caps_is_subset_structure_full:
+ * @caps: a #GstCaps
+ * @structure: a potential #GstStructure subset of @caps
+ * @features: (allow-none): a #GstCapsFeatures for @structure
+ *
+ * Checks if @structure is a subset of @caps. See gst_caps_is_subset()
+ * for more information.
+ *
+ * Returns: %TRUE if @structure is a subset of @caps
+ *
+ * Since: 1.2
+ */
+gboolean
+gst_caps_is_subset_structure_full (const GstCaps * caps,
+ const GstStructure * structure, const GstCapsFeatures * features)
+{
+ GstStructure *s;
+ GstCapsFeatures *f;
+ gint i;
+
+ g_return_val_if_fail (caps != NULL, FALSE);
+ g_return_val_if_fail (structure != NULL, FALSE);
+
+ if (CAPS_IS_ANY (caps))
+ return TRUE;
+ if (CAPS_IS_EMPTY (caps))
+ return FALSE;
+
+ if (!features)
+ features = GST_CAPS_FEATURES_MEMORY_SYSTEM_MEMORY;
+
+ for (i = GST_CAPS_LEN (caps) - 1; i >= 0; i--) {
+ s = gst_caps_get_structure_unchecked (caps, i);
+ f = gst_caps_get_features_unchecked (caps, i);
+ if (!f)
+ f = GST_CAPS_FEATURES_MEMORY_SYSTEM_MEMORY;
+ if ((!gst_caps_features_is_any (features) || gst_caps_features_is_any (f))
+ && gst_caps_features_is_equal (features, f)
+ && gst_structure_is_subset (structure, s)) {
+ /* If we found a superset return TRUE */
+ return TRUE;
+ }
+ }
+
+ return FALSE;
+}
+
+/**
* gst_caps_is_equal:
* @caps1: a #GstCaps
* @caps2: another #GstCaps
*
* Checks if the given caps represent the same set of caps.
- * <note>This function does not work reliably if optional properties for caps
- * are included on one caps and omitted on the other.</note>
- *
- * This function deals correctly with passing NULL for any of the caps.
*
- * Returns: TRUE if both caps are equal.
+ * Returns: %TRUE if both caps are equal.
*/
gboolean
gst_caps_is_equal (const GstCaps * caps1, const GstCaps * caps2)
*
* Checks if the given caps are exactly the same set of caps.
*
- * This function deals correctly with passing NULL for any of the caps.
- *
- * Returns: TRUE if both caps are strictly equal.
- *
- * Since: 0.10.36
+ * Returns: %TRUE if both caps are strictly equal.
*/
gboolean
gst_caps_is_strictly_equal (const GstCaps * caps1, const GstCaps * caps2)
{
int i;
+ GstStructure *s1, *s2;
+ GstCapsFeatures *f1, *f2;
g_return_val_if_fail (GST_IS_CAPS (caps1), FALSE);
g_return_val_if_fail (GST_IS_CAPS (caps2), FALSE);
return FALSE;
for (i = 0; i < GST_CAPS_LEN (caps1); i++) {
- if (!gst_structure_is_equal (gst_caps_get_structure_unchecked (caps1, i),
- gst_caps_get_structure_unchecked (caps2, i)))
+ s1 = gst_caps_get_structure_unchecked (caps1, i);
+ f1 = gst_caps_get_features_unchecked (caps1, i);
+ if (!f1)
+ f1 = GST_CAPS_FEATURES_MEMORY_SYSTEM_MEMORY;
+ s2 = gst_caps_get_structure_unchecked (caps2, i);
+ f2 = gst_caps_get_features_unchecked (caps2, i);
+ if (!f2)
+ f2 = GST_CAPS_FEATURES_MEMORY_SYSTEM_MEMORY;
+
+ if (gst_caps_features_is_any (f1) != gst_caps_features_is_any (f2) ||
+ !gst_caps_features_is_equal (f1, f2) ||
+ !gst_structure_is_equal (s1, s2))
return FALSE;
}
* be empty
*
* Returns: %TRUE if intersection would be not empty
- *
- * Since: 0.10.25
*/
gboolean
gst_caps_can_intersect (const GstCaps * caps1, const GstCaps * caps2)
guint j, k, len1, len2;
GstStructure *struct1;
GstStructure *struct2;
+ GstCapsFeatures *features1;
+ GstCapsFeatures *features2;
g_return_val_if_fail (GST_IS_CAPS (caps1), FALSE);
g_return_val_if_fail (GST_IS_CAPS (caps2), FALSE);
len1 = GST_CAPS_LEN (caps1);
len2 = GST_CAPS_LEN (caps2);
for (i = 0; i < len1 + len2 - 1; i++) {
- /* superset index goes from 0 to sgst_caps_structure_intersectuperset->structs->len-1 */
+ /* superset index goes from 0 to superset->structs->len-1 */
j = MIN (i, len1 - 1);
/* subset index stays 0 until i reaches superset->structs->len, then it
* counts up from 1 to subset->structs->len - 1 */
k = (i > j) ? (i - j) : 0; /* MAX (0, i - j) */
-
/* now run the diagonal line, end condition is the left or bottom
* border */
while (k < len2) {
struct1 = gst_caps_get_structure_unchecked (caps1, j);
+ features1 = gst_caps_get_features_unchecked (caps1, j);
+ if (!features1)
+ features1 = GST_CAPS_FEATURES_MEMORY_SYSTEM_MEMORY;
struct2 = gst_caps_get_structure_unchecked (caps2, k);
-
- if (gst_structure_can_intersect (struct1, struct2)) {
+ features2 = gst_caps_get_features_unchecked (caps2, k);
+ if (!features2)
+ features2 = GST_CAPS_FEATURES_MEMORY_SYSTEM_MEMORY;
+ if (gst_caps_features_is_equal (features1, features2) &&
+ gst_structure_can_intersect (struct1, struct2)) {
return TRUE;
}
/* move down left */
j--;
}
}
+
return FALSE;
}
{
guint64 i; /* index can be up to 2 * G_MAX_UINT */
guint j, k, len1, len2;
-
GstStructure *struct1;
GstStructure *struct2;
+ GstCapsFeatures *features1;
+ GstCapsFeatures *features2;
GstCaps *dest;
GstStructure *istruct;
/* one of the caps is any, just copy the other caps */
if (G_UNLIKELY (CAPS_IS_ANY (caps1)))
return gst_caps_ref (caps2);
+
if (G_UNLIKELY (CAPS_IS_ANY (caps2)))
return gst_caps_ref (caps1);
dest = gst_caps_new_empty ();
-
/* run zigzag on top line then right line, this preserves the caps order
* much better than a simple loop.
*
/* caps2 index stays 0 until i reaches GST_CAPS_LEN (caps1), then it counts
* up from 1 to GST_CAPS_LEN (caps2) - 1 */
k = (i > j) ? (i - j) : 0; /* MAX (0, i - j) */
-
/* now run the diagonal line, end condition is the left or bottom
* border */
while (k < len2) {
struct1 = gst_caps_get_structure_unchecked (caps1, j);
+ features1 = gst_caps_get_features_unchecked (caps1, j);
+ if (!features1)
+ features1 = GST_CAPS_FEATURES_MEMORY_SYSTEM_MEMORY;
struct2 = gst_caps_get_structure_unchecked (caps2, k);
-
- istruct = gst_structure_intersect (struct1, struct2);
-
- dest = gst_caps_merge_structure (dest, istruct);
+ features2 = gst_caps_get_features_unchecked (caps2, k);
+ if (!features2)
+ features2 = GST_CAPS_FEATURES_MEMORY_SYSTEM_MEMORY;
+ if (gst_caps_features_is_equal (features1, features2)) {
+ istruct = gst_structure_intersect (struct1, struct2);
+ if (istruct) {
+ if (gst_caps_features_is_any (features1))
+ dest =
+ gst_caps_merge_structure_full (dest, istruct,
+ gst_caps_features_copy_conditional (features2));
+ else
+ dest =
+ gst_caps_merge_structure_full (dest, istruct,
+ gst_caps_features_copy_conditional (features1));
+ }
+ }
/* move down left */
k++;
if (G_UNLIKELY (j == 0))
* Unlike @gst_caps_intersect, the returned caps will be ordered in a similar
* fashion as @caps1.
*
- * Returns: the new #GstCaps
+ * Returns: (transfer full): the new #GstCaps
*/
static GstCaps *
gst_caps_intersect_first (GstCaps * caps1, GstCaps * caps2)
{
guint i;
guint j, len1, len2;
-
GstStructure *struct1;
GstStructure *struct2;
+ GstCapsFeatures *features1;
+ GstCapsFeatures *features2;
GstCaps *dest;
GstStructure *istruct;
/* one of the caps is any, just copy the other caps */
if (G_UNLIKELY (CAPS_IS_ANY (caps1)))
return gst_caps_ref (caps2);
+
if (G_UNLIKELY (CAPS_IS_ANY (caps2)))
return gst_caps_ref (caps1);
dest = gst_caps_new_empty ();
-
len1 = GST_CAPS_LEN (caps1);
len2 = GST_CAPS_LEN (caps2);
for (i = 0; i < len1; i++) {
struct1 = gst_caps_get_structure_unchecked (caps1, i);
+ features1 = gst_caps_get_features_unchecked (caps1, i);
+ if (!features1)
+ features1 = GST_CAPS_FEATURES_MEMORY_SYSTEM_MEMORY;
for (j = 0; j < len2; j++) {
struct2 = gst_caps_get_structure_unchecked (caps2, j);
- istruct = gst_structure_intersect (struct1, struct2);
- if (istruct)
- dest = gst_caps_merge_structure (dest, istruct);
+ features2 = gst_caps_get_features_unchecked (caps2, j);
+ if (!features2)
+ features2 = GST_CAPS_FEATURES_MEMORY_SYSTEM_MEMORY;
+ if (gst_caps_features_is_equal (features1, features2)) {
+ istruct = gst_structure_intersect (struct1, struct2);
+ if (istruct) {
+ if (gst_caps_features_is_any (features1))
+ dest =
+ gst_caps_merge_structure_full (dest, istruct,
+ gst_caps_features_copy_conditional (features2));
+ else
+ dest =
+ gst_caps_merge_structure_full (dest, istruct,
+ gst_caps_features_copy_conditional (features1));
+ }
+ }
}
}
* to both @caps1 and @caps2, the order is defined by the #GstCapsIntersectMode
* used.
*
- * Returns: the new #GstCaps
- * Since: 0.10.33
+ * Returns: (transfer full): the new #GstCaps
*/
GstCaps *
gst_caps_intersect_full (GstCaps * caps1, GstCaps * caps2,
* Creates a new #GstCaps that contains all the formats that are common
* to both @caps1 and @caps2. Defaults to %GST_CAPS_INTERSECT_ZIG_ZAG mode.
*
- * Returns: the new #GstCaps
+ * Returns: (transfer full): the new #GstCaps
*/
GstCaps *
gst_caps_intersect (GstCaps * caps1, GstCaps * caps2)
return gst_caps_intersect_full (caps1, caps2, GST_CAPS_INTERSECT_ZIG_ZAG);
}
-
/* subtract operation */
typedef struct
{
const GstStructure *subtract_from;
GSList *put_into;
-}
-SubtractionEntry;
+} SubtractionEntry;
static gboolean
gst_caps_structure_subtract_field (GQuark field_id, const GValue * value,
GstStructure *structure;
other = gst_structure_id_get_value (e->subtract_from, field_id);
+
if (!other) {
return FALSE;
}
+
if (!gst_value_subtract (&subtraction, other, value))
return TRUE;
+
if (gst_value_compare (&subtraction, other) == GST_VALUE_EQUAL) {
g_value_unset (&subtraction);
return FALSE;
} else {
structure = gst_structure_copy (e->subtract_from);
- gst_structure_id_set_value (structure, field_id, &subtraction);
- g_value_unset (&subtraction);
+ gst_structure_id_take_value (structure, field_id, &subtraction);
e->put_into = g_slist_prepend (e->put_into, structure);
return TRUE;
}
e.subtract_from = minuend;
e.put_into = NULL;
-
ret = gst_structure_foreach ((GstStructure *) subtrahend,
gst_caps_structure_subtract_field, &e);
+
if (ret) {
*into = e.put_into;
} else {
}
g_slist_free (e.put_into);
}
+
return ret;
}
* @subtrahend: #GstCaps to subtract
*
* Subtracts the @subtrahend from the @minuend.
- * <note>This function does not work reliably if optional properties for caps
- * are included on one caps and omitted on the other.</note>
+ * > This function does not work reliably if optional properties for caps
+ * > are included on one caps and omitted on the other.
*
- * Returns: the resulting caps
+ * Returns: (transfer full): the resulting caps
*/
GstCaps *
gst_caps_subtract (GstCaps * minuend, GstCaps * subtrahend)
guint i, j, sublen;
GstStructure *min;
GstStructure *sub;
+ GstCapsFeatures *min_f, *sub_f;
GstCaps *dest = NULL, *src;
g_return_val_if_fail (minuend != NULL, NULL);
if (CAPS_IS_EMPTY (minuend) || CAPS_IS_ANY (subtrahend)) {
return gst_caps_new_empty ();
}
+
if (CAPS_IS_EMPTY_SIMPLE (subtrahend))
return gst_caps_ref (minuend);
ANY means for specific types, so it's not possible to reduce ANY partially
You can only remove everything or nothing and that is done above.
Note: there's a test that checks this behaviour. */
+
g_return_val_if_fail (!CAPS_IS_ANY (minuend), NULL);
sublen = GST_CAPS_LEN (subtrahend);
g_assert (sublen > 0);
guint srclen;
sub = gst_caps_get_structure_unchecked (subtrahend, i);
+ sub_f = gst_caps_get_features_unchecked (subtrahend, i);
+ if (!sub_f)
+ sub_f = GST_CAPS_FEATURES_MEMORY_SYSTEM_MEMORY;
if (dest) {
gst_caps_unref (src);
src = dest;
srclen = GST_CAPS_LEN (src);
for (j = 0; j < srclen; j++) {
min = gst_caps_get_structure_unchecked (src, j);
- if (gst_structure_get_name_id (min) == gst_structure_get_name_id (sub)) {
+ min_f = gst_caps_get_features_unchecked (src, j);
+ if (!min_f)
+ min_f = GST_CAPS_FEATURES_MEMORY_SYSTEM_MEMORY;
+
+ /* Same reason as above for ANY caps */
+ g_return_val_if_fail (!gst_caps_features_is_any (min_f), NULL);
+
+ if (gst_structure_get_name_id (min) == gst_structure_get_name_id (sub) &&
+ gst_caps_features_is_equal (min_f, sub_f)) {
GSList *list;
if (gst_caps_structure_subtract (&list, min, sub)) {
for (walk = list; walk; walk = g_slist_next (walk)) {
gst_caps_append_structure_unchecked (dest,
- (GstStructure *) walk->data);
+ (GstStructure *) walk->data,
+ gst_caps_features_copy_conditional (min_f));
}
g_slist_free (list);
} else {
- gst_caps_append_structure_unchecked (dest, gst_structure_copy (min));
+ gst_caps_append_structure_unchecked (dest, gst_structure_copy (min),
+ gst_caps_features_copy_conditional (min_f));
}
} else {
- gst_caps_append_structure_unchecked (dest, gst_structure_copy (min));
+ gst_caps_append_structure_unchecked (dest, gst_structure_copy (min),
+ gst_caps_features_copy_conditional (min_f));
}
}
+
if (CAPS_IS_EMPTY_SIMPLE (dest)) {
gst_caps_unref (src);
return dest;
gst_caps_unref (src);
dest = gst_caps_simplify (dest);
+
return dest;
}
{
GstCaps *caps;
GstStructure *structure;
-}
-NormalizeForeach;
+ GstCapsFeatures *features;
+} NormalizeForeach;
static gboolean
gst_caps_normalize_foreach (GQuark field_id, const GValue * value, gpointer ptr)
if (G_VALUE_TYPE (value) == GST_TYPE_LIST) {
guint len = gst_value_list_get_size (value);
+
for (i = 1; i < len; i++) {
const GValue *v = gst_value_list_get_value (value, i);
GstStructure *structure = gst_structure_copy (nf->structure);
gst_structure_id_set_value (structure, field_id, v);
- gst_caps_append_structure_unchecked (nf->caps, structure);
+ gst_caps_append_structure_unchecked (nf->caps, structure,
+ gst_caps_features_copy_conditional (nf->features));
}
gst_value_init_and_copy (&val, gst_value_list_get_value (value, 0));
- gst_structure_id_set_value (nf->structure, field_id, &val);
- g_value_unset (&val);
-
+ gst_structure_id_take_value (nf->structure, field_id, &val);
return FALSE;
}
+
return TRUE;
}
* @caps, but contains no lists. Each list is expanded into separate
* @GstStructures.
*
- * This function takes ownership of @caps.
+ * This function takes ownership of @caps and will call gst_caps_make_writable()
+ * on it so you must not use @caps afterwards unless you keep an additional
+ * reference to it with gst_caps_ref().
*
* Returns: (transfer full): the normalized #GstCaps
*/
g_return_val_if_fail (GST_IS_CAPS (caps), NULL);
caps = gst_caps_make_writable (caps);
-
nf.caps = caps;
for (i = 0; i < gst_caps_get_size (nf.caps); i++) {
nf.structure = gst_caps_get_structure_unchecked (nf.caps, i);
-
+ nf.features = gst_caps_get_features_unchecked (nf.caps, i);
while (!gst_structure_foreach (nf.structure,
gst_caps_normalize_foreach, &nf));
}
gst_caps_compare_structures (gconstpointer one, gconstpointer two)
{
gint ret;
- const GstStructure *struct1 = *((const GstStructure **) one);
- const GstStructure *struct2 = *((const GstStructure **) two);
+ const GstStructure *struct1 = ((const GstCapsArrayElement *) one)->structure;
+ const GstStructure *struct2 = ((const GstCapsArrayElement *) two)->structure;
/* FIXME: this orders alphabetically, but ordering the quarks might be faster
So what's the best way? */
ret = strcmp (gst_structure_get_name (struct1),
gst_structure_get_name (struct2));
+
if (ret)
return ret;
GQuark name;
GValue value;
GstStructure *compare;
-}
-UnionField;
+} UnionField;
static gboolean
gst_caps_structure_figure_out_union (GQuark field_id, const GValue * value,
g_value_unset (&u->value);
return FALSE;
}
+
if (gst_value_compare (val, value) == GST_VALUE_EQUAL)
return TRUE;
+
if (u->name) {
g_value_unset (&u->value);
return FALSE;
}
+
u->name = field_id;
gst_value_union (&u->value, val, value);
+
return TRUE;
}
* but at most one field: field.name */
if (G_IS_VALUE (&field.value)) {
if (gst_structure_n_fields (simplify) == gst_structure_n_fields (compare)) {
- gst_structure_id_set_value (compare, field.name, &field.value);
+ gst_structure_id_take_value (compare, field.name, &field.value);
*result = NULL;
ret = TRUE;
+ } else {
+ g_value_unset (&field.value);
}
- g_value_unset (&field.value);
- } else if (gst_structure_n_fields (simplify) <=
+ } else
+ if (gst_structure_n_fields (simplify) <=
gst_structure_n_fields (compare)) {
/* compare is just more specific, will be optimized away later */
/* FIXME: do this here? */
gst_structure_set_parent_refcount (old, NULL);
gst_structure_free (old);
gst_structure_set_parent_refcount (new, &GST_CAPS_REFCOUNT (caps));
- g_ptr_array_index (GST_CAPS_ARRAY (caps), i) = new;
+ g_array_index (GST_CAPS_ARRAY (caps), GstCapsArrayElement, i).structure = new;
}
/**
* identical are merged. Component structures that have values that can be
* merged are also merged.
*
+ * This function takes ownership of @caps and will call gst_caps_make_writable()
+ * on it if necessary, so you must not use @caps afterwards unless you keep an
+ * additional reference to it with gst_caps_ref().
+ *
* This method does not preserve the original order of @caps.
*
- * Returns: The simplified caps.
+ * Returns: (transfer full): The simplified caps.
*/
GstCaps *
gst_caps_simplify (GstCaps * caps)
{
GstStructure *simplify, *compare, *result = NULL;
+ GstCapsFeatures *simplify_f, *compare_f;
gint i, j, start;
g_return_val_if_fail (GST_IS_CAPS (caps), NULL);
caps = gst_caps_make_writable (caps);
- g_ptr_array_sort (GST_CAPS_ARRAY (caps), gst_caps_compare_structures);
+ g_array_sort (GST_CAPS_ARRAY (caps), gst_caps_compare_structures);
for (i = start; i >= 0; i--) {
simplify = gst_caps_get_structure_unchecked (caps, i);
+ simplify_f = gst_caps_get_features_unchecked (caps, i);
+ if (!simplify_f)
+ simplify_f = GST_CAPS_FEATURES_MEMORY_SYSTEM_MEMORY;
compare = gst_caps_get_structure_unchecked (caps, start);
+ compare_f = gst_caps_get_features_unchecked (caps, start);
+ if (!compare_f)
+ compare_f = GST_CAPS_FEATURES_MEMORY_SYSTEM_MEMORY;
if (gst_structure_get_name_id (simplify) !=
- gst_structure_get_name_id (compare))
+ gst_structure_get_name_id (compare) ||
+ !gst_caps_features_is_equal (simplify_f, compare_f))
start = i;
for (j = start; j >= 0; j--) {
if (j == i)
continue;
compare = gst_caps_get_structure_unchecked (caps, j);
+ compare_f = gst_caps_get_features_unchecked (caps, j);
+ if (!compare_f)
+ compare_f = GST_CAPS_FEATURES_MEMORY_SYSTEM_MEMORY;
if (gst_structure_get_name_id (simplify) !=
- gst_structure_get_name_id (compare)) {
+ gst_structure_get_name_id (compare) ||
+ !gst_caps_features_is_equal (simplify_f, compare_f)) {
break;
}
if (gst_caps_structure_simplify (&result, simplify, compare)) {
* values. First the caps will be truncated and then the first structure will be
* fixated with gst_structure_fixate().
*
+ * This function takes ownership of @caps and will call gst_caps_make_writable()
+ * on it so you must not use @caps afterwards unless you keep an additional
+ * reference to it with gst_caps_ref().
+ *
* Returns: (transfer full): the fixated caps
*/
GstCaps *
gst_caps_fixate (GstCaps * caps)
{
GstStructure *s;
+ GstCapsFeatures *f;
g_return_val_if_fail (GST_IS_CAPS (caps), NULL);
s = gst_caps_get_structure (caps, 0);
gst_structure_fixate (s);
+ /* Set features to sysmem if they're still ANY */
+ f = gst_caps_get_features_unchecked (caps, 0);
+ if (f && gst_caps_features_is_any (f)) {
+ f = gst_caps_features_new_empty ();
+ gst_caps_set_features (caps, 0, f);
+ }
+
return caps;
}
* can be converted back to a #GstCaps by gst_caps_from_string().
*
* For debugging purposes its easier to do something like this:
- * |[
+ * |[<!-- language="C" -->
* GST_LOG ("caps are %" GST_PTR_FORMAT, caps);
* ]|
* This prints the caps in human readable form.
*
+ * The current implementation of serialization will lead to unexpected results
+ * when there are nested #GstCaps / #GstStructure deeper than one level.
+ *
* Returns: (transfer full): a newly allocated string representing @caps.
*/
gchar *
slen = 0;
clen = GST_CAPS_LEN (caps);
for (i = 0; i < clen; i++) {
+ GstCapsFeatures *f;
+
slen +=
- STRUCTURE_ESTIMATED_STRING_LEN (gst_caps_get_structure_unchecked (caps,
- i));
+ STRUCTURE_ESTIMATED_STRING_LEN (gst_caps_get_structure_unchecked
+ (caps, i));
+ f = gst_caps_get_features_unchecked (caps, i);
+ if (f)
+ slen += FEATURES_ESTIMATED_STRING_LEN (f);
}
s = g_string_sized_new (slen);
for (i = 0; i < clen; i++) {
GstStructure *structure;
+ GstCapsFeatures *features;
if (i > 0) {
/* ';' is now added by gst_structure_to_string */
}
structure = gst_caps_get_structure_unchecked (caps, i);
+ features = gst_caps_get_features_unchecked (caps, i);
+
+ g_string_append (s, gst_structure_get_name (structure));
+ if (features && (gst_caps_features_is_any (features)
+ || !gst_caps_features_is_equal (features,
+ GST_CAPS_FEATURES_MEMORY_SYSTEM_MEMORY))) {
+ g_string_append_c (s, '(');
+ priv_gst_caps_features_append_to_gstring (features, s);
+ g_string_append_c (s, ')');
+ }
priv_gst_structure_append_to_gstring (structure, s);
}
if (s->len && s->str[s->len - 1] == ';') {
gst_caps_from_string_inplace (GstCaps * caps, const gchar * string)
{
GstStructure *structure;
- gchar *s;
+ gchar *s, *copy, *end, *next, save;
if (strcmp ("ANY", string) == 0) {
GST_CAPS_FLAGS (caps) = GST_CAPS_FLAG_ANY;
return TRUE;
}
- if (strcmp ("EMPTY", string) == 0) {
- return TRUE;
- }
- structure = gst_structure_from_string (string, &s);
- if (structure == NULL) {
- return FALSE;
+ if (strcmp ("EMPTY", string) == 0 || strcmp ("NONE", string) == 0) {
+ return TRUE;
}
- gst_caps_append_structure_unchecked (caps, structure);
+ copy = s = g_strdup (string);
do {
+ GstCapsFeatures *features = NULL;
while (g_ascii_isspace (*s))
s++;
if (*s == '\0') {
break;
}
- structure = gst_structure_from_string (s, &s);
+
+ if (!priv_gst_structure_parse_name (s, &s, &end, &next)) {
+ g_free (copy);
+ return FALSE;
+ }
+
+ save = *end;
+ *end = '\0';
+ structure = gst_structure_new_empty (s);
+ *end = save;
+
if (structure == NULL) {
+ g_free (copy);
return FALSE;
}
- gst_caps_append_structure_unchecked (caps, structure);
+ s = next;
+
+ if (*s == '\0') {
+ goto append;
+ }
+
+ if (*s == '(') {
+ s++;
+ end = s;
+
+ while (TRUE) {
+ if (*end == '\0') {
+ break;
+ } else if (*end == ')') {
+ break;
+ } else {
+ end++;
+ }
+ }
+
+ save = *end;
+ *end = '\0';
+ features = gst_caps_features_from_string (s);
+ if (!features) {
+ gst_structure_free (structure);
+ g_free (copy);
+ return FALSE;
+ }
+ *end = save;
+ s = end;
+ if (save == ')')
+ s++;
+ }
+
+ if (*s == '\0') {
+ goto append;
+ }
+
+ if (!priv_gst_structure_parse_fields (s, &s, structure)) {
+ gst_structure_free (structure);
+ if (features)
+ gst_caps_features_free (features);
+ g_free (copy);
+ return FALSE;
+ }
+
+ append:
+ gst_caps_append_structure_unchecked (caps, structure, features);
+ features = NULL;
+ if (*s == '\0')
+ break;
} while (TRUE);
+ g_free (copy);
+
return TRUE;
}
*
* Converts @caps from a string representation.
*
- * Returns: (transfer full): a newly allocated #GstCaps
+ * The current implementation of serialization will lead to unexpected results
+ * when there are nested #GstCaps / #GstStructure deeper than one level.
+ *
+ * Returns: (transfer full) (nullable): a newly allocated #GstCaps
*/
GstCaps *
gst_caps_from_string (const gchar * string)
g_value_take_string (dest_value,
gst_caps_to_string (gst_value_get_caps (src_value)));
}
+
+/**
+ * gst_caps_foreach:
+ * @caps: a #GstCaps
+ * @func: (scope call): a function to call for each field
+ * @user_data: (closure): private data
+ *
+ * Calls the provided function once for each structure and caps feature in the
+ * #GstCaps. The function must not modify the fields.
+ * Also see gst_caps_map_in_place() and gst_caps_filter_and_map_in_place().
+ *
+ * Returns: %TRUE if the supplied function returns %TRUE for each call,
+ * %FALSE otherwise.
+ *
+ * Since: 1.6
+ */
+gboolean
+gst_caps_foreach (const GstCaps * caps, GstCapsForeachFunc func,
+ gpointer user_data)
+{
+ guint i, n;
+ GstCapsFeatures *features;
+ GstStructure *structure;
+ gboolean ret;
+
+ g_return_val_if_fail (GST_IS_CAPS (caps), FALSE);
+ g_return_val_if_fail (func != NULL, FALSE);
+
+ n = GST_CAPS_LEN (caps);
+
+ for (i = 0; i < n; i++) {
+ features = gst_caps_get_features_unchecked (caps, i);
+ structure = gst_caps_get_structure_unchecked (caps, i);
+
+ ret = func (features, structure, user_data);
+ if (G_UNLIKELY (!ret))
+ return FALSE;
+ }
+
+ return TRUE;
+}
+
+/**
+ * gst_caps_map_in_place:
+ * @caps: a #GstCaps
+ * @func: (scope call): a function to call for each field
+ * @user_data: (closure): private data
+ *
+ * Calls the provided function once for each structure and caps feature in the
+ * #GstCaps. In contrast to gst_caps_foreach(), the function may modify but not
+ * delete the structures and features. The caps must be mutable.
+ *
+ * Returns: %TRUE if the supplied function returns %TRUE for each call,
+ * %FALSE otherwise.
+ *
+ * Since: 1.6
+ */
+gboolean
+gst_caps_map_in_place (GstCaps * caps, GstCapsMapFunc func, gpointer user_data)
+{
+ guint i, n;
+ GstCapsFeatures *features;
+ GstStructure *structure;
+ gboolean ret;
+
+ g_return_val_if_fail (GST_IS_CAPS (caps), FALSE);
+ g_return_val_if_fail (gst_caps_is_writable (caps), FALSE);
+ g_return_val_if_fail (func != NULL, FALSE);
+
+ n = GST_CAPS_LEN (caps);
+
+ for (i = 0; i < n; i++) {
+ features = gst_caps_get_features_unchecked (caps, i);
+ structure = gst_caps_get_structure_unchecked (caps, i);
+
+ /* Provide sysmem features if there are none yet */
+ if (!features) {
+ features =
+ gst_caps_features_copy (GST_CAPS_FEATURES_MEMORY_SYSTEM_MEMORY);
+ gst_caps_set_features (caps, i, features);
+ }
+
+ ret = func (features, structure, user_data);
+ if (G_UNLIKELY (!ret))
+ return FALSE;
+ }
+
+ return TRUE;
+}
+
+/**
+ * gst_caps_filter_and_map_in_place:
+ * @caps: a #GstCaps
+ * @func: (scope call): a function to call for each field
+ * @user_data: (closure): private data
+ *
+ * Calls the provided function once for each structure and caps feature in the
+ * #GstCaps. In contrast to gst_caps_foreach(), the function may modify the
+ * structure and features. In contrast to gst_caps_filter_and_map_in_place(),
+ * the structure and features are removed from the caps if %FALSE is returned
+ * from the function.
+ * The caps must be mutable.
+ *
+ * Since: 1.6
+ */
+void
+gst_caps_filter_and_map_in_place (GstCaps * caps, GstCapsFilterMapFunc func,
+ gpointer user_data)
+{
+ guint i, n;
+ GstCapsFeatures *features;
+ GstStructure *structure;
+ gboolean ret;
+
+ g_return_if_fail (GST_IS_CAPS (caps));
+ g_return_if_fail (gst_caps_is_writable (caps));
+ g_return_if_fail (func != NULL);
+
+ n = GST_CAPS_LEN (caps);
+
+ for (i = 0; i < n;) {
+ features = gst_caps_get_features_unchecked (caps, i);
+ structure = gst_caps_get_structure_unchecked (caps, i);
+
+ /* Provide sysmem features if there are none yet */
+ if (!features) {
+ features =
+ gst_caps_features_copy (GST_CAPS_FEATURES_MEMORY_SYSTEM_MEMORY);
+ gst_caps_set_features (caps, i, features);
+ }
+
+ ret = func (features, structure, user_data);
+ if (!ret) {
+ GST_CAPS_ARRAY (caps) = g_array_remove_index (GST_CAPS_ARRAY (caps), i);
+
+ gst_structure_set_parent_refcount (structure, NULL);
+ gst_structure_free (structure);
+ if (features) {
+ gst_caps_features_set_parent_refcount (features, NULL);
+ gst_caps_features_free (features);
+ }
+
+ n = GST_CAPS_LEN (caps);
+ } else {
+ i++;
+ }
+ }
+}
+
+/**
+ * gst_caps_copy:
+ * @caps: a #GstCaps.
+ *
+ * Creates a new #GstCaps as a copy of the old @caps. The new caps will have a
+ * refcount of 1, owned by the caller. The structures are copied as well.
+ *
+ * Note that this function is the semantic equivalent of a gst_caps_ref()
+ * followed by a gst_caps_make_writable(). If you only want to hold on to a
+ * reference to the data, you should use gst_caps_ref().
+ *
+ * When you are finished with the caps, call gst_caps_unref() on it.
+ *
+ * Returns: the new #GstCaps
+ */
+GstCaps *(gst_caps_copy) (const GstCaps * caps)
+{
+ return GST_CAPS (gst_mini_object_copy (GST_MINI_OBJECT_CAST (caps)));
+}
projects / platform / upstream / gstreamer.git / blobdiff