* Boston, MA 02111-1307, USA.
*/
-//#define GST_DEBUG_ENABLED
+/* #define GST_DEBUG_ENABLED */
#include "gst_private.h"
#include "gstcaps.h"
#include "gsttype.h"
+#include "gstlog.h"
-#include "gstpropsprivate.h"
+static GMemChunk *_gst_caps_chunk;
+static GMutex *_gst_caps_chunk_lock;
+GType _gst_caps_type;
+
+static void
+transform_func (const GValue *src_value,
+ GValue *dest_value)
+{
+ GstCaps *caps = g_value_peek_pointer (src_value);
+ GString *result = g_string_new ("");
+
+ g_string_append_printf (result, "(GstCaps *) ");
+
+ while (caps) {
+ gchar *props;
+ GValue value = { 0, }; /* the important thing is that value.type = 0 */
+
+ g_string_append_printf (result,
+ "{ %s; ", gst_caps_get_mime (caps));
+
+ g_value_init (&value, GST_TYPE_PROPS);
+ g_value_set_boxed (&value, caps->properties);
+ props = g_strdup_value_contents (&value);
+
+ g_string_append (result, props);
+ g_free (props);
+
+ caps = caps->next;
+ g_string_append_printf (result, " }%s", caps?", ":"");
+ }
+ dest_value->data[0].v_pointer = result->str;
+}
void
_gst_caps_initialize (void)
{
+ _gst_caps_chunk = g_mem_chunk_new ("GstCaps",
+ sizeof (GstCaps), sizeof (GstCaps) * 256,
+ G_ALLOC_AND_FREE);
+ _gst_caps_chunk_lock = g_mutex_new ();
+
+ _gst_caps_type = g_boxed_type_register_static ("GstCaps",
+ (GBoxedCopyFunc) gst_caps_ref,
+ (GBoxedFreeFunc) gst_caps_unref);
+
+ g_value_register_transform_func (_gst_caps_type,
+ G_TYPE_STRING,
+ transform_func);
}
static guint16
typeid = gst_type_find_by_mime (mime);
if (typeid == 0) {
- GstTypeFactory factory; // = g_new0 (GstTypeFactory, 1);
+ GstTypeDefinition definition;
+ GstTypeFactory *factory;
+
+ definition.name = "capstype";
+ definition.mime = g_strdup (mime);
+ definition.exts = NULL;
+ definition.typefindfunc = NULL;
- factory.mime = g_strdup (mime);
- factory.exts = NULL;
- factory.typefindfunc = NULL;
+ factory = gst_type_factory_new (&definition);
- typeid = gst_type_register (&factory);
+ typeid = gst_type_register (factory);
}
return typeid;
}
* gst_caps_new:
* @name: the name of this capability
* @mime: the mime type to attach to the capability
+ * @props: the properties to add to this capability
+ *
+ * Create a new capability with the given mime typei and properties.
+ *
+ * Returns: a new capability
+ */
+GstCaps*
+gst_caps_new (const gchar *name, const gchar *mime, GstProps *props)
+{
+ g_return_val_if_fail (mime != NULL, NULL);
+
+ return gst_caps_new_id (name, get_type_for_mime (mime), props);
+}
+
+/**
+ * gst_caps_new_id:
+ * @name: the name of this capability
+ * @id: the id of the mime type
+ * @props: the properties to add to this capability
*
- * Create a new capability with the given mime type.
+ * Create a new capability with the given mime typeid and properties.
*
* Returns: a new capability
*/
GstCaps*
-gst_caps_new (const gchar *name, const gchar *mime)
+gst_caps_new_id (const gchar *name, const guint16 id, GstProps *props)
{
GstCaps *caps;
- g_return_val_if_fail (mime != NULL, NULL);
+ g_mutex_lock (_gst_caps_chunk_lock);
+ caps = g_mem_chunk_alloc (_gst_caps_chunk);
+ g_mutex_unlock (_gst_caps_chunk_lock);
- caps = g_new0 (GstCaps, 1);
caps->name = g_strdup (name);
- caps->id = get_type_for_mime (mime);
- caps->properties = NULL;
+ caps->id = id;
+ caps->properties = props;
caps->next = NULL;
+ caps->refcount = 1;
+ if (props)
+ caps->fixed = props->fixed;
+ else
+ caps->fixed = TRUE;
return caps;
}
/**
- * gst_caps_new_with_props:
- * @name: the name of this capability
- * @mime: the mime type to attach to the capability
- * @props: the properties for this capability
+ * gst_caps_destroy:
+ * @caps: the caps to destroy
*
- * Create a new capability with the given mime type and the given properties.
+ * Frees the memory used by this caps structure and all
+ * the chained caps and properties.
+ */
+void
+gst_caps_destroy (GstCaps *caps)
+{
+ GstCaps *next;
+
+ if (caps == NULL)
+ return;
+
+ next = caps->next;
+
+ gst_props_unref (caps->properties);
+ g_free (caps->name);
+ g_mutex_lock (_gst_caps_chunk_lock);
+ g_mem_chunk_free (_gst_caps_chunk, caps);
+ g_mutex_unlock (_gst_caps_chunk_lock);
+
+ if (next)
+ gst_caps_unref (next);
+}
+
+/**
+ * gst_caps_debug:
+ * @caps: the caps to print out
+ * @label: a label to put on the printout, or NULL
*
- * Returns: a new capability
+ * Print out the contents of the caps structure. Useful for debugging.
+ */
+void
+gst_caps_debug (GstCaps *caps, const gchar *label)
+{
+ GST_DEBUG_ENTER ("caps debug: %s", label);
+ while (caps) {
+ GST_DEBUG (GST_CAT_CAPS, "caps: %p %s %s (%sfixed)", caps, caps->name, gst_caps_get_mime (caps),
+ caps->fixed ? "" : "NOT ");
+
+ if (caps->properties) {
+ gst_props_debug (caps->properties);
+ }
+ else {
+ GST_DEBUG (GST_CAT_CAPS, "no properties");
+ }
+
+ caps = caps->next;
+ }
+ GST_DEBUG_LEAVE ("caps debug");
+}
+
+/**
+ * gst_caps_unref:
+ * @caps: the caps to unref
+ *
+ * Decrease the refcount of this caps structure,
+ * destroying it when the refcount is 0
+ *
+ * Returns: caps or NULL if the refcount reached 0
*/
GstCaps*
-gst_caps_new_with_props (const gchar *name, const gchar *mime, GstProps *props)
+gst_caps_unref (GstCaps *caps)
{
- GstCaps *caps;
+ gboolean zero;
+ GstCaps **next;
- caps = gst_caps_new (name, mime);
- caps->properties = props;
+ if (caps == NULL)
+ return NULL;
+
+ g_return_val_if_fail (caps->refcount > 0, NULL);
+
+ caps->refcount--;
+ zero = (caps->refcount == 0);
+ next = &caps->next;
+
+ if (*next)
+ *next = gst_caps_unref (*next);
+ if (zero) {
+ gst_caps_destroy (caps);
+ caps = NULL;
+ }
return caps;
}
/**
- * gst_caps_register:
- * @factory: the factory to register
+ * gst_caps_ref:
+ * @caps: the caps to ref
*
- * Register the factory.
+ * Increase the refcount of this caps structure
*
- * Returns: the registered capability
+ * Returns: the caps with the refcount incremented
*/
GstCaps*
-gst_caps_register (GstCapsFactory *factory)
+gst_caps_ref (GstCaps *caps)
{
- guint dummy;
+ g_return_val_if_fail (caps != NULL, NULL);
+
+ caps->refcount++;
- return gst_caps_register_count (factory, &dummy);
+ return caps;
}
/**
- * gst_caps_register_count:
- * @factory: the factory to register
- * @counter: count how many entries were consumed
+ * gst_caps_copy_1:
+ * @caps: the caps to copy
*
- * Register the factory.
+ * Copies the caps, not copying any chained caps.
*
- * Returns: the registered capability
+ * Returns: a copy of the GstCaps structure.
*/
GstCaps*
-gst_caps_register_count (GstCapsFactory *factory, guint *counter)
+gst_caps_copy_1 (GstCaps *caps)
{
- GstCapsFactoryEntry tag;
- gint i = 0;
- guint16 typeid;
- gchar *name;
- GstCaps *caps;
+ GstCaps *newcaps;
+
+ if (!caps)
+ return NULL;
+
+ newcaps = gst_caps_new_id (
+ caps->name,
+ caps->id,
+ gst_props_copy (caps->properties));
- g_return_val_if_fail (factory != NULL, NULL);
+ return newcaps;
+}
- tag = (*factory)[i++];
- g_return_val_if_fail (tag != NULL, NULL);
+/**
+ * gst_caps_copy:
+ * @caps: the caps to copy
+ *
+ * Copies the caps.
+ *
+ * Returns: a copy of the GstCaps structure.
+ */
+GstCaps*
+gst_caps_copy (GstCaps *caps)
+{
+ GstCaps *new = NULL, *walk = NULL;
- name = tag;
+ while (caps) {
+ GstCaps *newcaps;
- tag = (*factory)[i++];
- g_return_val_if_fail (tag != NULL, NULL);
+ newcaps = gst_caps_copy_1 (caps);
- typeid = get_type_for_mime ((gchar *)tag);
+ if (new == NULL) {
+ new = walk = newcaps;
+ }
+ else {
+ walk = walk->next = newcaps;
+ }
+ caps = caps->next;
+ }
+
+ return new;
+}
+
+/**
+ * gst_caps_copy_on_write:
+ * @caps: the caps to copy
+ *
+ * Copies the caps if the refcount is greater than 1
+ *
+ * Returns: a pointer to a GstCaps strcuture that can
+ * be safely written to
+ */
+GstCaps*
+gst_caps_copy_on_write (GstCaps *caps)
+{
+ GstCaps *new = caps;
+ gboolean needcopy;
- caps = g_new0 (GstCaps, 1);
g_return_val_if_fail (caps != NULL, NULL);
- caps->name = g_strdup (name);
- caps->id = typeid;
- caps->properties = gst_props_register_count (&(*factory)[i], counter);
+ needcopy = (caps->refcount > 1);
- *counter += 2;
+ if (needcopy) {
+ new = gst_caps_copy (caps);
+ gst_caps_unref (caps);
+ }
- return caps;
+ return new;
}
/**
/**
* gst_caps_set_type_id:
* @caps: the caps to set the type id to
- * @typeid: the type id to set
+ * @type_id: the type id to set
*
* Set the type id of the caps.
*/
}
/**
+ * gst_caps_chain:
+ * @caps: a capabilty
+ * @...: more capabilities
+ *
+ * chains the given capabilities
+ *
+ * Returns: the new capability
+ */
+GstCaps*
+gst_caps_chain (GstCaps *caps, ...)
+{
+ GstCaps *orig = caps;
+ va_list var_args;
+
+ va_start (var_args, caps);
+
+ while (caps) {
+ GstCaps *toadd;
+
+ toadd = va_arg (var_args, GstCaps*);
+ gst_caps_append (caps, toadd);
+
+ caps = toadd;
+ }
+ va_end (var_args);
+
+ return orig;
+}
+
+/**
* gst_caps_append:
* @caps: a capabilty
* @capstoadd: the capability to append
gst_caps_append (GstCaps *caps, GstCaps *capstoadd)
{
GstCaps *orig = caps;
-
- if (caps == NULL)
+
+ if (caps == NULL || caps == capstoadd)
return capstoadd;
while (caps->next) {
if (capstoadd == NULL)
return caps;
+ g_return_val_if_fail (caps != capstoadd, caps);
+
while (capstoadd->next) {
capstoadd = capstoadd->next;
}
return orig;
}
+/**
+ * gst_caps_get_by_name:
+ * @caps: a capabilty
+ * @name: the name of the capability to get
+ *
+ * Get the capability with the given name from this
+ * chain of capabilities.
+ *
+ * Returns: the first capability in the chain with the
+ * given name
+ */
GstCaps*
gst_caps_get_by_name (GstCaps *caps, const gchar *name)
{
gst_caps_check_compatibility_func (GstCaps *fromcaps, GstCaps *tocaps)
{
if (fromcaps->id != tocaps->id) {
- GST_DEBUG (0,"gstcaps: mime types differ (%d to %d)\n",
- fromcaps->id, tocaps->id);
+ GST_DEBUG (GST_CAT_CAPS,"mime types differ (%s to %s)",
+ gst_type_find_by_id (fromcaps->id)->mime,
+ gst_type_find_by_id (tocaps->id)->mime);
return FALSE;
}
return gst_props_check_compatibility (fromcaps->properties, tocaps->properties);
}
else {
- GST_DEBUG (0,"gstcaps: no source caps\n");
+ GST_DEBUG (GST_CAT_CAPS,"no source caps");
return FALSE;
}
}
else {
- // assume it accepts everything
- GST_DEBUG (0,"gstcaps: no caps\n");
+ /* assume it accepts everything */
+ GST_DEBUG (GST_CAT_CAPS,"no caps");
return TRUE;
}
}
/**
- * gst_caps_list_check_compatibility:
+ * gst_caps_check_compatibility:
* @fromcaps: a capabilty
* @tocaps: a capabilty
*
- * Checks whether two capability lists are compatible.
+ * Checks whether two capabilities are compatible.
*
* Returns: TRUE if compatible, FALSE otherwise
*/
{
if (fromcaps == NULL) {
if (tocaps == NULL) {
- GST_DEBUG (0,"gstcaps: no caps\n");
+ GST_DEBUG (GST_CAT_CAPS,"no caps");
return TRUE;
}
else {
- GST_DEBUG (0,"gstcaps: no src but destination caps\n");
+ GST_DEBUG (GST_CAT_CAPS,"no source but destination caps");
return FALSE;
}
}
else {
if (tocaps == NULL) {
- GST_DEBUG (0,"gstcaps: src caps and no dest caps\n");
+ GST_DEBUG (GST_CAT_CAPS,"source caps and no destination caps");
return TRUE;
}
}
return FALSE;
}
+static GstCaps*
+gst_caps_intersect_func (GstCaps *caps1, GstCaps *caps2)
+{
+ GstCaps *result = NULL;
+ GstProps *props;
+
+ if (caps1->id != caps2->id) {
+ GST_DEBUG (GST_CAT_CAPS,"mime types differ (%s to %s)",
+ gst_type_find_by_id (caps1->id)->mime,
+ gst_type_find_by_id (caps2->id)->mime);
+ return NULL;
+ }
+
+ if (caps1->properties == NULL) {
+ return gst_caps_ref (caps2);
+ }
+ if (caps2->properties == NULL) {
+ return gst_caps_ref (caps1);
+ }
+
+ props = gst_props_intersect (caps1->properties, caps2->properties);
+ if (props) {
+ result = gst_caps_new_id ("intersect", caps1->id, props);
+ }
+
+ return result;
+}
+
+/**
+ * gst_caps_intersect:
+ * @caps1: a capabilty
+ * @caps2: a capabilty
+ *
+ * Make the intersection between two caps.
+ *
+ * Returns: The intersection of the two caps or NULL if the intersection
+ * is empty.
+ */
+GstCaps*
+gst_caps_intersect (GstCaps *caps1, GstCaps *caps2)
+{
+ GstCaps *result = NULL, *walk = NULL;
+
+ if (caps1 == NULL) {
+ GST_DEBUG (GST_CAT_CAPS, "first caps is NULL, return other caps");
+ return gst_caps_copy (caps2);
+ }
+ if (caps2 == NULL) {
+ GST_DEBUG (GST_CAT_CAPS, "second caps is NULL, return other caps");
+ return gst_caps_copy (caps1);
+ }
+
+ while (caps1) {
+ GstCaps *othercaps = caps2;
+
+ while (othercaps) {
+ GstCaps *intersection;
+
+ intersection = gst_caps_intersect_func (caps1, othercaps);
+
+ if (intersection) {
+ if (!result) {
+ walk = result = intersection;
+ }
+ else {
+ walk = walk->next = intersection;
+ }
+ }
+ othercaps = othercaps->next;
+ }
+ caps1 = caps1->next;
+ }
+
+ return result;
+}
+
+/**
+ * gst_caps_normalize:
+ * @caps: a capabilty
+ *
+ * Make the normalisation of the caps. This will return a new caps
+ * that is equivalent to the input caps with the exception that all
+ * lists are unrolled. This function is useful when you want to iterate
+ * the caps.
+ *
+ * Returns: The normalisation of the caps.
+ */
+GstCaps*
+gst_caps_normalize (GstCaps *caps)
+{
+ GstCaps *result = NULL, *walk = caps;
+
+ if (caps == NULL)
+ return caps;
+
+ while (caps) {
+ GList *proplist;
+
+ proplist = gst_props_normalize (caps->properties);
+ if (proplist && g_list_next (proplist) == NULL) {
+ if (result == NULL)
+ walk = result = caps;
+ else {
+ walk = walk->next = caps;
+ }
+ goto next;
+ }
+
+ while (proplist) {
+ GstProps *props = (GstProps *) proplist->data;
+ GstCaps *newcaps = gst_caps_new_id (caps->name, caps->id, props);
+
+ if (result == NULL)
+ walk = result = newcaps;
+ else {
+ walk = walk->next = newcaps;
+ }
+ proplist = g_list_next (proplist);
+ }
+next:
+ caps = caps->next;
+ }
+ return result;
+}
+
+#ifndef GST_DISABLE_LOADSAVE_REGISTRY
/**
* gst_caps_save_thyself:
* @caps: a capabilty to save
while (field) {
if (!strcmp (field->name, "capscomp")) {
xmlNodePtr subfield = field->xmlChildrenNode;
- GstCaps *caps = g_new0 (GstCaps, 1);
+ GstCaps *caps;
gchar *content;
+
+ g_mutex_lock (_gst_caps_chunk_lock);
+ caps = g_mem_chunk_alloc0 (_gst_caps_chunk);
+ g_mutex_unlock (_gst_caps_chunk_lock);
+
+ caps->refcount = 1;
+ caps->next = NULL;
+ caps->fixed = TRUE;
while (subfield) {
if (!strcmp (subfield->name, "name")) {
return result;
}
-
-
+#endif /* GST_DISABLE_LOADSAVE_REGISTRY */
projects / platform / upstream / gstreamer.git / blobdiff