/**
* SECTION:gstmessage
+ * @title: GstMessage
* @short_description: Lightweight objects to signal the application of
* pipeline events
* @see_also: #GstBus, #GstMiniObject, #GstElement
* application using the #GstBus.
*
* The basic use pattern of posting a message on a #GstBus is as follows:
- * |[
+ * |[<!-- language="C" -->
* gst_bus_post (bus, gst_message_new_eos());
* ]|
*
#include "gsttaglist.h"
#include "gstutils.h"
#include "gstquark.h"
+#include "gstvalue.h"
typedef struct
{GST_MESSAGE_HAVE_CONTEXT, "have-context", 0},
{GST_MESSAGE_DEVICE_ADDED, "device-added", 0},
{GST_MESSAGE_DEVICE_REMOVED, "device-removed", 0},
+ {GST_MESSAGE_DEVICE_CHANGED, "device-changed", 0},
+ {GST_MESSAGE_PROPERTY_NOTIFY, "property-notify", 0},
+ {GST_MESSAGE_STREAM_COLLECTION, "stream-collection", 0},
+ {GST_MESSAGE_STREAMS_SELECTED, "streams-selected", 0},
+ {GST_MESSAGE_REDIRECT, "redirect", 0},
{0, NULL, 0}
};
+static GQuark details_quark = 0;
+
GType _gst_message_type = 0;
GST_DEFINE_MINI_OBJECT_TYPE (GstMessage, gst_message);
message_quarks[i].quark =
g_quark_from_static_string (message_quarks[i].name);
}
+ details_quark = g_quark_from_static_string ("details");
_gst_message_type = gst_message_get_type ();
}
return 0;
}
+static gboolean
+_gst_message_dispose (GstMessage * message)
+{
+ gboolean do_free = TRUE;
+
+ if (GST_MINI_OBJECT_FLAG_IS_SET (message, GST_MESSAGE_FLAG_ASYNC_DELIVERY)) {
+ /* revive message, so bus can finish with it and clean it up */
+ gst_message_ref (message);
+
+ GST_INFO ("[msg %p] signalling async free", message);
+
+ GST_MESSAGE_LOCK (message);
+ GST_MESSAGE_SIGNAL (message);
+ GST_MESSAGE_UNLOCK (message);
+
+ /* don't free it yet, let bus finish with it first */
+ do_free = FALSE;
+ }
+
+ return do_free;
+}
+
static void
_gst_message_free (GstMessage * message)
{
GST_MESSAGE_SRC (message) = NULL;
}
- if (message->lock.p) {
- GST_MESSAGE_LOCK (message);
- GST_MESSAGE_SIGNAL (message);
- GST_MESSAGE_UNLOCK (message);
- }
-
structure = GST_MESSAGE_STRUCTURE (message);
if (structure) {
gst_structure_set_parent_refcount (structure, NULL);
gst_structure_free (structure);
}
+#ifdef USE_POISONING
+ memset (message, 0xff, sizeof (GstMessageImpl));
+#endif
g_slice_free1 (sizeof (GstMessageImpl), message);
}
GstObject * src)
{
gst_mini_object_init (GST_MINI_OBJECT_CAST (message), 0, _gst_message_type,
- (GstMiniObjectCopyFunction) _gst_message_copy, NULL,
+ (GstMiniObjectCopyFunction) _gst_message_copy,
+ (GstMiniObjectDisposeFunction) _gst_message_dispose,
(GstMiniObjectFreeFunction) _gst_message_free);
GST_MESSAGE_TYPE (message) = type;
/**
* gst_message_new_custom:
* @type: The #GstMessageType to distinguish messages
- * @src: The object originating the message.
+ * @src: (transfer none) (allow-none): The object originating the message.
* @structure: (transfer full) (allow-none): the structure for the
* message. The message will take ownership of the structure.
*
* handled by other message-specific functions to pass a message to the
* app. The structure field can be %NULL.
*
- * Returns: (transfer full): The new message.
+ * Returns: (transfer full) (nullable): The new message.
*
* MT safe.
*/
gst_message_set_seqnum (GstMessage * message, guint32 seqnum)
{
g_return_if_fail (GST_IS_MESSAGE (message));
+ g_return_if_fail (seqnum != GST_SEQNUM_INVALID);
GST_MESSAGE_SEQNUM (message) = seqnum;
}
/**
* gst_message_new_eos:
- * @src: (transfer none): The object originating the message.
+ * @src: (transfer none) (allow-none): The object originating the message.
*
* Create a new eos message. This message is generated and posted in
* the sink elements of a GstBin. The bin will only forward the EOS
}
/**
- * gst_message_new_error:
- * @src: (transfer none): The object originating the message.
+ * gst_message_new_error_with_details:
+ * @src: (transfer none) (allow-none): The object originating the message.
* @error: (transfer none): The GError for this message.
* @debug: A debugging string.
+ * @details: (transfer full) (allow-none): A GstStructure with details
*
* Create a new error message. The message will copy @error and
* @debug. This message is posted by element when a fatal event
* occurred. The pipeline will probably (partially) stop. The application
* receiving this message should stop the pipeline.
*
- * Returns: (transfer full): the new error message.
+ * Returns: (transfer full) (nullable): the new error message.
*
- * MT safe.
+ * Since: 1.10
*/
GstMessage *
-gst_message_new_error (GstObject * src, GError * error, const gchar * debug)
+gst_message_new_error_with_details (GstObject * src, GError * error,
+ const gchar * debug, GstStructure * details)
{
GstMessage *message;
GstStructure *structure;
+ if (debug && !g_utf8_validate (debug, -1, NULL)) {
+ debug = NULL;
+ g_warning ("Trying to set debug field of error message, but "
+ "string is not valid UTF-8. Please file a bug.");
+ }
+
structure = gst_structure_new_id (GST_QUARK (MESSAGE_ERROR),
GST_QUARK (GERROR), G_TYPE_ERROR, error,
GST_QUARK (DEBUG), G_TYPE_STRING, debug, NULL);
message = gst_message_new_custom (GST_MESSAGE_ERROR, src, structure);
+ if (details) {
+ GValue v = G_VALUE_INIT;
+
+ g_value_init (&v, GST_TYPE_STRUCTURE);
+ g_value_take_boxed (&v, details);
+ gst_structure_id_take_value (GST_MESSAGE_STRUCTURE (message), details_quark,
+ &v);
+ }
return message;
}
/**
- * gst_message_new_warning:
- * @src: (transfer none): The object originating the message.
+ * gst_message_new_error:
+ * @src: (transfer none) (allow-none): The object originating the message.
+ * @error: (transfer none): The GError for this message.
+ * @debug: A debugging string.
+ *
+ * Create a new error message. The message will copy @error and
+ * @debug. This message is posted by element when a fatal event
+ * occurred. The pipeline will probably (partially) stop. The application
+ * receiving this message should stop the pipeline.
+ *
+ * Returns: (transfer full): the new error message.
+ *
+ * MT safe.
+ */
+GstMessage *
+gst_message_new_error (GstObject * src, GError * error, const gchar * debug)
+{
+ return gst_message_new_error_with_details (src, error, debug, NULL);
+}
+
+/**
+ * gst_message_parse_error_details:
+ * @message: The message object
+ * @structure: (transfer none) (out): A pointer to the returned details
+ *
+ * Returns the optional details structure, may be NULL if none.
+ * The returned structure must not be freed.
+ *
+ * Since: 1.10
+ */
+void
+gst_message_parse_error_details (GstMessage * message,
+ const GstStructure ** structure)
+{
+ const GValue *v;
+
+ g_return_if_fail (GST_IS_MESSAGE (message));
+ g_return_if_fail (GST_MESSAGE_TYPE (message) == GST_MESSAGE_ERROR);
+ g_return_if_fail (structure != NULL);
+
+ *structure = NULL;
+ v = gst_structure_id_get_value (GST_MESSAGE_STRUCTURE (message),
+ details_quark);
+ if (v) {
+ *structure = g_value_get_boxed (v);
+ }
+}
+
+/**
+ * gst_message_new_warning_with_details:
+ * @src: (transfer none) (allow-none): The object originating the message.
* @error: (transfer none): The GError for this message.
* @debug: A debugging string.
+ * @details: (transfer full) (allow-none): A GstStructure with details
*
* Create a new warning message. The message will make copies of @error and
* @debug.
*
- * Returns: (transfer full): The new warning message.
+ * Returns: (transfer full) (nullable): the new warning message.
*
- * MT safe.
+ * Since: 1.10
*/
GstMessage *
-gst_message_new_warning (GstObject * src, GError * error, const gchar * debug)
+gst_message_new_warning_with_details (GstObject * src, GError * error,
+ const gchar * debug, GstStructure * details)
{
GstMessage *message;
GstStructure *structure;
+ if (debug && !g_utf8_validate (debug, -1, NULL)) {
+ debug = NULL;
+ g_warning ("Trying to set debug field of warning message, but "
+ "string is not valid UTF-8. Please file a bug.");
+ }
+
structure = gst_structure_new_id (GST_QUARK (MESSAGE_WARNING),
GST_QUARK (GERROR), G_TYPE_ERROR, error,
GST_QUARK (DEBUG), G_TYPE_STRING, debug, NULL);
message = gst_message_new_custom (GST_MESSAGE_WARNING, src, structure);
+ if (details) {
+ GValue v = G_VALUE_INIT;
+
+ g_value_init (&v, GST_TYPE_STRUCTURE);
+ g_value_take_boxed (&v, details);
+ gst_structure_id_take_value (GST_MESSAGE_STRUCTURE (message), details_quark,
+ &v);
+ }
return message;
}
/**
- * gst_message_new_info:
- * @src: (transfer none): The object originating the message.
+ * gst_message_new_warning:
+ * @src: (transfer none) (allow-none): The object originating the message.
* @error: (transfer none): The GError for this message.
* @debug: A debugging string.
*
- * Create a new info message. The message will make copies of @error and
+ * Create a new warning message. The message will make copies of @error and
* @debug.
*
+ * Returns: (transfer full): the new warning message.
+ *
* MT safe.
+ */
+GstMessage *
+gst_message_new_warning (GstObject * src, GError * error, const gchar * debug)
+{
+ return gst_message_new_warning_with_details (src, error, debug, NULL);
+}
+
+/**
+ * gst_message_parse_warning_details:
+ * @message: The message object
+ * @structure: (transfer none) (out): A pointer to the returned details structure
*
- * Returns: (transfer full): the new info message.
+ * Returns the optional details structure, may be NULL if none
+ * The returned structure must not be freed.
+ *
+ * Since: 1.10
+ */
+void
+gst_message_parse_warning_details (GstMessage * message,
+ const GstStructure ** structure)
+{
+ const GValue *v;
+
+ g_return_if_fail (GST_IS_MESSAGE (message));
+ g_return_if_fail (GST_MESSAGE_TYPE (message) == GST_MESSAGE_WARNING);
+ g_return_if_fail (structure != NULL);
+
+ *structure = NULL;
+ v = gst_structure_id_get_value (GST_MESSAGE_STRUCTURE (message),
+ details_quark);
+ if (v) {
+ *structure = g_value_get_boxed (v);
+ }
+}
+
+/**
+ * gst_message_new_info_with_details:
+ * @src: (transfer none) (allow-none): The object originating the message.
+ * @error: (transfer none): The GError for this message.
+ * @debug: A debugging string.
+ * @details: (transfer full) (allow-none): A GstStructure with details
+ *
+ * Create a new info message. The message will make copies of @error and
+ * @debug.
+ *
+ * Returns: (transfer full) (nullable): the new warning message.
+ *
+ * Since: 1.10
*/
GstMessage *
-gst_message_new_info (GstObject * src, GError * error, const gchar * debug)
+gst_message_new_info_with_details (GstObject * src, GError * error,
+ const gchar * debug, GstStructure * details)
{
GstMessage *message;
GstStructure *structure;
+ if (debug && !g_utf8_validate (debug, -1, NULL)) {
+ debug = NULL;
+ g_warning ("Trying to set debug field of info message, but "
+ "string is not valid UTF-8. Please file a bug.");
+ }
+
structure = gst_structure_new_id (GST_QUARK (MESSAGE_INFO),
GST_QUARK (GERROR), G_TYPE_ERROR, error,
GST_QUARK (DEBUG), G_TYPE_STRING, debug, NULL);
message = gst_message_new_custom (GST_MESSAGE_INFO, src, structure);
+ if (details) {
+ GValue v = G_VALUE_INIT;
+
+ g_value_init (&v, GST_TYPE_STRUCTURE);
+ g_value_take_boxed (&v, details);
+ gst_structure_id_take_value (GST_MESSAGE_STRUCTURE (message), details_quark,
+ &v);
+ }
return message;
}
/**
+ * gst_message_new_info:
+ * @src: (transfer none) (allow-none): The object originating the message.
+ * @error: (transfer none): The GError for this message.
+ * @debug: A debugging string.
+ *
+ * Create a new info message. The message will make copies of @error and
+ * @debug.
+ *
+ * Returns: (transfer full): the new info message.
+ *
+ * MT safe.
+ */
+GstMessage *
+gst_message_new_info (GstObject * src, GError * error, const gchar * debug)
+{
+ return gst_message_new_info_with_details (src, error, debug, NULL);
+}
+
+/**
+ * gst_message_parse_info_details:
+ * @message: The message object
+ * @structure: (transfer none) (out): A pointer to the returned details structure
+ *
+ * Returns the optional details structure, may be NULL if none
+ * The returned structure must not be freed.
+ *
+ * Since: 1.10
+ */
+void
+gst_message_parse_info_details (GstMessage * message,
+ const GstStructure ** structure)
+{
+ const GValue *v;
+
+ g_return_if_fail (GST_IS_MESSAGE (message));
+ g_return_if_fail (GST_MESSAGE_TYPE (message) == GST_MESSAGE_INFO);
+ g_return_if_fail (structure != NULL);
+
+ *structure = NULL;
+ v = gst_structure_id_get_value (GST_MESSAGE_STRUCTURE (message),
+ details_quark);
+ if (v) {
+ *structure = g_value_get_boxed (v);
+ }
+}
+
+/**
* gst_message_new_tag:
- * @src: (transfer none): The object originating the message.
+ * @src: (transfer none) (allow-none): The object originating the message.
* @tag_list: (transfer full): the tag list for the message.
*
* Create a new tag message. The message will take ownership of the tag list.
/**
* gst_message_new_buffering:
- * @src: (transfer none): The object originating the message.
+ * @src: (transfer none) (allow-none): The object originating the message.
* @percent: The buffering percent
*
* Create a new buffering message. This message can be posted by an element that
*
* MT safe.
*
- * Returns: (transfer full): The new buffering message.
+ * Returns: (transfer full) (nullable): The new buffering message.
*/
GstMessage *
gst_message_new_buffering (GstObject * src, gint percent)
/**
* gst_message_new_state_changed:
- * @src: (transfer none): the object originating the message
+ * @src: (transfer none) (allow-none): The object originating the message.
* @oldstate: the previous state
* @newstate: the new (current) state
* @pending: the pending (target) state
/**
* gst_message_new_state_dirty:
- * @src: (transfer none): the object originating the message
+ * @src: (transfer none) (allow-none): The object originating the message
*
* Create a state dirty message. This message is posted whenever an element
* changed its state asynchronously and is used internally to update the
/**
* gst_message_new_clock_provide:
- * @src: (transfer none): the object originating the message.
+ * @src: (transfer none) (allow-none): The object originating the message.
* @clock: (transfer none): the clock it provides
* @ready: %TRUE if the sender can provide a clock
*
/**
* gst_message_new_clock_lost:
- * @src: (transfer none): the object originating the message.
+ * @src: (transfer none) (allow-none): The object originating the message.
* @clock: (transfer none): the clock that was lost
*
* Create a clock lost message. This message is posted whenever the
/**
* gst_message_new_new_clock:
- * @src: (transfer none): The object originating the message.
+ * @src: (transfer none) (allow-none): The object originating the message.
* @clock: (transfer none): the new selected clock
*
* Create a new clock message. This message is posted whenever the
/**
* gst_message_new_structure_change:
- * @src: (transfer none): The object originating the message.
+ * @src: (transfer none) (allow-none): The object originating the message.
* @type: The change type.
* @owner: (transfer none): The owner element of @src.
* @busy: Whether the structure change is busy.
/**
* gst_message_new_segment_start:
- * @src: (transfer none): The object originating the message.
+ * @src: (transfer none) (allow-none): The object originating the message.
* @format: The format of the position being played
* @position: The position of the segment being played
*
/**
* gst_message_new_segment_done:
- * @src: (transfer none): the object originating the message.
+ * @src: (transfer none) (allow-none): The object originating the message.
* @format: The format of the position being done
* @position: The position of the segment being done
*
/**
* gst_message_new_application:
- * @src: (transfer none): the object originating the message.
+ * @src: (transfer none) (allow-none): The object originating the message.
* @structure: (transfer full): the structure for the message. The message
* will take ownership of the structure.
*
* Create a new application-typed message. GStreamer will never create these
* messages; they are a gift from us to you. Enjoy.
*
- * Returns: (transfer full): The new application message.
+ * Returns: (transfer full) (nullable): The new application message.
*
* MT safe.
*/
/**
* gst_message_new_element:
- * @src: (transfer none): The object originating the message.
+ * @src: (transfer none) (allow-none): The object originating the message.
* @structure: (transfer full): The structure for the
* message. The message will take ownership of the structure.
*
* "the firewire cable was unplugged". The format of the message should be
* documented in the element's documentation. The structure field can be %NULL.
*
- * Returns: (transfer full): The new element message.
+ * Returns: (transfer full) (nullable): The new element message.
*
* MT safe.
*/
/**
* gst_message_new_duration_changed:
- * @src: (transfer none): The object originating the message.
+ * @src: (transfer none) (allow-none): The object originating the message.
*
* Create a new duration changed message. This message is posted by elements
* that know the duration of a stream when the duration changes. This message
* is received by bins and is used to calculate the total duration of a
- * pipeline. Elements may post a duration message with a duration of
- * GST_CLOCK_TIME_NONE to indicate that the duration has changed and the
- * cached duration should be discarded. The new duration can then be
- * retrieved via a query.
+ * pipeline.
*
* Returns: (transfer full): The new duration-changed message.
*
/**
* gst_message_new_async_start:
- * @src: (transfer none): The object originating the message.
+ * @src: (transfer none) (allow-none): The object originating the message.
*
* This message is posted by elements when they start an ASYNC state change.
*
/**
* gst_message_new_async_done:
- * @src: (transfer none): The object originating the message.
+ * @src: (transfer none) (allow-none): The object originating the message.
* @running_time: the desired running_time
*
* The message is posted when elements completed an ASYNC state change.
/**
* gst_message_new_latency:
- * @src: (transfer none): The object originating the message.
+ * @src: (transfer none) (allow-none): The object originating the message.
*
* This message can be posted by elements when their latency requirements have
* changed.
/**
* gst_message_new_request_state:
- * @src: (transfer none): the object originating the message.
+ * @src: (transfer none) (allow-none): The object originating the message.
* @state: The new requested state
*
* This message can be posted by elements when they want to have their state
*
* Access the structure of the message.
*
- * Returns: (transfer none): The structure of the message. The structure is
- * still owned by the message, which means that you should not free it and
- * that the pointer becomes invalid when you free the message.
+ * Returns: (transfer none) (nullable): The structure of the message. The
+ * structure is still owned by the message, which means that you should not
+ * free it and that the pointer becomes invalid when you free the message.
*
* MT safe.
*/
}
/**
+ * gst_message_writable_structure:
+ * @message: The #GstMessage.
+ *
+ * Get a writable version of the structure.
+ *
+ * Returns: (transfer none): The structure of the message. The structure
+ * is still owned by the message, which means that you should not free
+ * it and that the pointer becomes invalid when you free the message.
+ * This function checks if @message is writable and will never return
+ * %NULL.
+ *
+ * MT safe.
+ *
+ * Since: 1.14
+ */
+GstStructure *
+gst_message_writable_structure (GstMessage * message)
+{
+ GstStructure *structure;
+
+ g_return_val_if_fail (GST_IS_MESSAGE (message), NULL);
+ g_return_val_if_fail (gst_message_is_writable (message), NULL);
+
+ structure = GST_MESSAGE_STRUCTURE (message);
+
+ if (structure == NULL) {
+ structure =
+ gst_structure_new_id_empty (gst_message_type_to_quark (GST_MESSAGE_TYPE
+ (message)));
+ gst_structure_set_parent_refcount (structure,
+ &message->mini_object.refcount);
+ GST_MESSAGE_STRUCTURE (message) = structure;
+ }
+ return structure;
+}
+
+/**
* gst_message_has_name:
* @message: The #GstMessage.
* @name: name to check
* output argument is a copy; the caller must free it when done.
*
* Typical usage of this function might be:
- * |[
+ * |[<!-- language="C" -->
* ...
* switch (GST_MESSAGE_TYPE (msg)) {
* case GST_MESSAGE_TAG: {
* GstTagList *tags = NULL;
- *
+ *
* gst_message_parse_tag (msg, &tags);
* g_print ("Got tags from element %s\n", GST_OBJECT_NAME (msg->src));
* handle_tags (tags);
/**
* gst_message_set_buffering_stats:
* @message: A valid #GstMessage of type GST_MESSAGE_BUFFERING.
- * @mode: a buffering mode
+ * @mode: a buffering mode
* @avg_in: the average input rate
* @avg_out: the average output rate
* @buffering_left: amount of buffering time left in milliseconds
gst_message_set_buffering_stats (GstMessage * message, GstBufferingMode mode,
gint avg_in, gint avg_out, gint64 buffering_left)
{
+ g_return_if_fail (GST_IS_MESSAGE (message));
g_return_if_fail (GST_MESSAGE_TYPE (message) == GST_MESSAGE_BUFFERING);
gst_structure_id_set (GST_MESSAGE_STRUCTURE (message),
* Extracts the old and new states from the GstMessage.
*
* Typical usage of this function might be:
- * |[
+ * |[<!-- language="C" -->
* ...
* switch (GST_MESSAGE_TYPE (msg)) {
* case GST_MESSAGE_STATE_CHANGED: {
* GstState old_state, new_state;
- *
+ *
* gst_message_parse_state_changed (msg, &old_state, &new_state, NULL);
* g_print ("Element %s changed state from %s to %s.\n",
* GST_OBJECT_NAME (msg->src),
* in the output arguments are copies; the caller must free them when done.
*
* Typical usage of this function might be:
- * |[
+ * |[<!-- language="C" -->
* ...
* switch (GST_MESSAGE_TYPE (msg)) {
* case GST_MESSAGE_ERROR: {
* GError *err = NULL;
* gchar *dbg_info = NULL;
- *
+ *
* gst_message_parse_error (msg, &err, &dbg_info);
* g_printerr ("ERROR from element %s: %s\n",
* GST_OBJECT_NAME (msg->src), err->message);
*
* Create a new stream status message. This message is posted when a streaming
* thread is created/destroyed or when the state changed.
- *
+ *
* Returns: (transfer full): the new stream status message.
*
* MT safe.
*
* Extracts the object managing the streaming thread from @message.
*
- * Returns: a GValue containing the object that manages the streaming thread.
- * This object is usually of type GstTask but other types can be added in the
- * future. The object remains valid as long as @message is valid.
+ * Returns: (nullable): a GValue containing the object that manages the
+ * streaming thread. This object is usually of type GstTask but other types can
+ * be added in the future. The object remains valid as long as @message is
+ * valid.
*/
const GValue *
gst_message_get_stream_status_object (GstMessage * message)
* @intermediate: is this an intermediate step
*
* This message is posted by elements when they accept or activate a new step
- * event for @amount in @format.
+ * event for @amount in @format.
*
* @active is set to %FALSE when the element accepted the new step event and has
* queued it for execution in the streaming threads.
* message is emitted, the application can queue a new step operation in the
* element.
*
- * Returns: (transfer full): The new step_start message.
+ * Returns: (transfer full): The new step_start message.
*
* MT safe.
*/
* to perform actions triggered by a state change.
*
* @code contains a well defined string describing the action.
- * @test should contain a user visible string detailing the current action.
+ * @text should contain a user visible string detailing the current action.
*
- * Returns: (transfer full): The new qos message.
+ * Returns: (transfer full) (nullable): The new qos message.
*/
GstMessage *
gst_message_new_progress (GstObject * src, GstProgressType type,
/**
* gst_message_new_reset_time:
- * @src: (transfer none): The object originating the message.
+ * @src: (transfer none) (allow-none): The object originating the message.
* @running_time: the requested running-time
*
* This message is posted when the pipeline running-time should be reset to
/**
* gst_message_new_stream_start:
- * @src: (transfer none): The object originating the message.
+ * @src: (transfer none) (allow-none): The object originating the message.
*
* Create a new stream_start message. This message is generated and posted in
* the sink elements of a GstBin. The bin will only forward the STREAM_START
/**
* gst_message_new_need_context:
- * @src: (transfer none): The object originating the message.
+ * @src: (transfer none) (allow-none): The object originating the message.
* @context_type: The context type that is needed
*
* This message is posted when an element needs a specific #GstContext.
/**
* gst_message_parse_context_type:
* @message: a GST_MESSAGE_NEED_CONTEXT type message
- * @context_type: (out) (allow-none): the context type, or %NULL
+ * @context_type: (out) (transfer none) (allow-none): the context type, or %NULL
*
* Parse a context type from an existing GST_MESSAGE_NEED_CONTEXT message.
*
/**
* gst_message_new_have_context:
- * @src: (transfer none): The object originating the message.
+ * @src: (transfer none) (allow-none): The object originating the message.
* @context: (transfer full): the context
*
* This message is posted when an element has a new local #GstContext.
/**
* gst_message_parse_device_added:
* @message: a #GstMessage of type %GST_MESSAGE_DEVICE_ADDED
- * @device: (out) (allow-none) (transfer none): A location where to store a
+ * @device: (out) (allow-none) (transfer full): A location where to store a
* pointer to the new #GstDevice, or %NULL
- *
+ *
* Parses a device-added message. The device-added message is produced by
* #GstDeviceProvider or a #GstDeviceMonitor. It announces the appearance
* of monitored devices.
/**
* gst_message_parse_device_removed:
* @message: a #GstMessage of type %GST_MESSAGE_DEVICE_REMOVED
- * @device: (out) (allow-none) (transfer none): A location where to store a
+ * @device: (out) (allow-none) (transfer full): A location where to store a
* pointer to the removed #GstDevice, or %NULL
*
* Parses a device-removed message. The device-removed message is produced by
gst_structure_id_get (GST_MESSAGE_STRUCTURE (message),
GST_QUARK (DEVICE), GST_TYPE_DEVICE, device, NULL);
}
+
+/**
+ * gst_message_new_device_changed:
+ * @src: The #GstObject that created the message
+ * @device: (transfer none): The newly created device representing @replaced_device
+ * with its new configuration.
+ *
+ * Creates a new device-changed message. The device-changed message is produced
+ * by #GstDeviceProvider or a #GstDeviceMonitor. They announce that a device
+ * properties has changed and @device represent the new modified version of @changed_device.
+ *
+ * Returns: a newly allocated #GstMessage
+ *
+ * Since: 1.16
+ */
+GstMessage *
+gst_message_new_device_changed (GstObject * src, GstDevice * device,
+ GstDevice * changed_device)
+{
+ GstMessage *message;
+ GstStructure *structure;
+
+ g_return_val_if_fail (device != NULL, NULL);
+ g_return_val_if_fail (GST_IS_DEVICE (device), NULL);
+
+ structure = gst_structure_new_id (GST_QUARK (MESSAGE_DEVICE_CHANGED),
+ GST_QUARK (DEVICE), GST_TYPE_DEVICE, device,
+ GST_QUARK (DEVICE_CHANGED), GST_TYPE_DEVICE, changed_device, NULL);
+ message = gst_message_new_custom (GST_MESSAGE_DEVICE_CHANGED, src, structure);
+
+ return message;
+}
+
+/**
+ * gst_message_parse_device_changed:
+ * @message: a #GstMessage of type %GST_MESSAGE_DEVICE_CHANGED
+ * @device: (out) (allow-none) (transfer full): A location where to store a
+ * pointer to the updated version of the #GstDevice, or %NULL
+ * @changed_device: (out) (allow-none) (transfer full): A location where to store a
+ * pointer to the old version of the #GstDevice, or %NULL
+ *
+ * Parses a device-changed message. The device-changed message is produced by
+ * #GstDeviceProvider or a #GstDeviceMonitor. It announces the
+ * disappearance of monitored devices. * It announce that a device properties has
+ * changed and @device represents the new modified version of @changed_device.
+ *
+ * Since: 1.16
+ */
+void
+gst_message_parse_device_changed (GstMessage * message, GstDevice ** device,
+ GstDevice ** changed_device)
+{
+ g_return_if_fail (GST_IS_MESSAGE (message));
+ g_return_if_fail (GST_MESSAGE_TYPE (message) == GST_MESSAGE_DEVICE_CHANGED);
+
+ if (device)
+ gst_structure_id_get (GST_MESSAGE_STRUCTURE (message),
+ GST_QUARK (DEVICE), GST_TYPE_DEVICE, device, NULL);
+
+ if (changed_device)
+ gst_structure_id_get (GST_MESSAGE_STRUCTURE (message),
+ GST_QUARK (DEVICE_CHANGED), GST_TYPE_DEVICE, changed_device, NULL);
+}
+
+/**
+ * gst_message_new_property_notify:
+ * @src: The #GstObject whose property changed (may or may not be a #GstElement)
+ * @property_name: name of the property that changed
+ * @val: (allow-none) (transfer full): new property value, or %NULL
+ *
+ * Returns: a newly allocated #GstMessage
+ *
+ * Since: 1.10
+ */
+GstMessage *
+gst_message_new_property_notify (GstObject * src, const gchar * property_name,
+ GValue * val)
+{
+ GstStructure *structure;
+ GValue name_val = G_VALUE_INIT;
+
+ g_return_val_if_fail (property_name != NULL, NULL);
+
+ structure = gst_structure_new_id_empty (GST_QUARK (MESSAGE_PROPERTY_NOTIFY));
+ g_value_init (&name_val, G_TYPE_STRING);
+ /* should already be interned, but let's make sure */
+ g_value_set_static_string (&name_val, g_intern_string (property_name));
+ gst_structure_id_take_value (structure, GST_QUARK (PROPERTY_NAME), &name_val);
+ if (val != NULL)
+ gst_structure_id_take_value (structure, GST_QUARK (PROPERTY_VALUE), val);
+
+ return gst_message_new_custom (GST_MESSAGE_PROPERTY_NOTIFY, src, structure);
+}
+
+/**
+ * gst_message_parse_property_notify:
+ * @message: a #GstMessage of type %GST_MESSAGE_PROPERTY_NOTIFY
+ * @object: (out) (allow-none) (transfer none): location where to store a
+ * pointer to the object whose property got changed, or %NULL
+ * @property_name: (out) (transfer none) (allow-none): return location for
+ * the name of the property that got changed, or %NULL
+ * @property_value: (out) (transfer none) (allow-none): return location for
+ * the new value of the property that got changed, or %NULL. This will
+ * only be set if the property notify watch was told to include the value
+ * when it was set up
+ *
+ * Parses a property-notify message. These will be posted on the bus only
+ * when set up with gst_element_add_property_notify_watch() or
+ * gst_element_add_property_deep_notify_watch().
+ *
+ * Since: 1.10
+ */
+void
+gst_message_parse_property_notify (GstMessage * message, GstObject ** object,
+ const gchar ** property_name, const GValue ** property_value)
+{
+ const GstStructure *s = GST_MESSAGE_STRUCTURE (message);
+
+ g_return_if_fail (GST_IS_MESSAGE (message));
+ g_return_if_fail (GST_MESSAGE_TYPE (message) == GST_MESSAGE_PROPERTY_NOTIFY);
+
+ if (object)
+ *object = GST_MESSAGE_SRC (message);
+
+ if (property_name) {
+ const GValue *name_value;
+
+ name_value = gst_structure_id_get_value (s, GST_QUARK (PROPERTY_NAME));
+ *property_name = g_value_get_string (name_value);
+ }
+
+ if (property_value)
+ *property_value =
+ gst_structure_id_get_value (s, GST_QUARK (PROPERTY_VALUE));
+}
+
+/**
+ * gst_message_new_stream_collection:
+ * @src: The #GstObject that created the message
+ * @collection: (transfer none): The #GstStreamCollection
+ *
+ * Creates a new stream-collection message. The message is used to announce new
+ * #GstStreamCollection
+ *
+ * Returns: a newly allocated #GstMessage
+ *
+ * Since: 1.10
+ */
+GstMessage *
+gst_message_new_stream_collection (GstObject * src,
+ GstStreamCollection * collection)
+{
+ GstMessage *message;
+ GstStructure *structure;
+
+ g_return_val_if_fail (collection != NULL, NULL);
+ g_return_val_if_fail (GST_IS_STREAM_COLLECTION (collection), NULL);
+
+ structure =
+ gst_structure_new_id (GST_QUARK (MESSAGE_STREAM_COLLECTION),
+ GST_QUARK (COLLECTION), GST_TYPE_STREAM_COLLECTION, collection, NULL);
+ message =
+ gst_message_new_custom (GST_MESSAGE_STREAM_COLLECTION, src, structure);
+
+ return message;
+}
+
+/**
+ * gst_message_parse_stream_collection:
+ * @message: a #GstMessage of type %GST_MESSAGE_STREAM_COLLECTION
+ * @collection: (out) (allow-none) (transfer full): A location where to store a
+ * pointer to the #GstStreamCollection, or %NULL
+ *
+ * Parses a stream-collection message.
+ *
+ * Since: 1.10
+ */
+void
+gst_message_parse_stream_collection (GstMessage * message,
+ GstStreamCollection ** collection)
+{
+ g_return_if_fail (GST_IS_MESSAGE (message));
+ g_return_if_fail (GST_MESSAGE_TYPE (message) ==
+ GST_MESSAGE_STREAM_COLLECTION);
+
+ if (collection)
+ gst_structure_id_get (GST_MESSAGE_STRUCTURE (message),
+ GST_QUARK (COLLECTION), GST_TYPE_STREAM_COLLECTION, collection, NULL);
+}
+
+/**
+ * gst_message_new_streams_selected:
+ * @src: The #GstObject that created the message
+ * @collection: (transfer none): The #GstStreamCollection
+ *
+ * Creates a new steams-selected message. The message is used to announce
+ * that an array of streams has been selected. This is generally in response
+ * to a #GST_EVENT_SELECT_STREAMS event, or when an element (such as decodebin3)
+ * makes an initial selection of streams.
+ *
+ * The message also contains the #GstStreamCollection to which the various streams
+ * belong to.
+ *
+ * Users of gst_message_new_streams_selected() can add the selected streams with
+ * gst_message_streams_selected_add().
+ *
+ * Returns: a newly allocated #GstMessage
+ *
+ * Since: 1.10
+ */
+GstMessage *
+gst_message_new_streams_selected (GstObject * src,
+ GstStreamCollection * collection)
+{
+ GstMessage *message;
+ GstStructure *structure;
+ GValue val = G_VALUE_INIT;
+
+ g_return_val_if_fail (collection != NULL, NULL);
+ g_return_val_if_fail (GST_IS_STREAM_COLLECTION (collection), NULL);
+
+ structure =
+ gst_structure_new_id (GST_QUARK (MESSAGE_STREAMS_SELECTED),
+ GST_QUARK (COLLECTION), GST_TYPE_STREAM_COLLECTION, collection, NULL);
+ g_value_init (&val, GST_TYPE_ARRAY);
+ gst_structure_id_take_value (structure, GST_QUARK (STREAMS), &val);
+ message =
+ gst_message_new_custom (GST_MESSAGE_STREAMS_SELECTED, src, structure);
+
+ return message;
+}
+
+/**
+ * gst_message_streams_selected_get_size:
+ * @message: a #GstMessage of type %GST_MESSAGE_STREAMS_SELECTED
+ *
+ * Returns the number of streams contained in the @message.
+ *
+ * Returns: The number of streams contained within.
+ *
+ * Since: 1.10
+ */
+guint
+gst_message_streams_selected_get_size (GstMessage * msg)
+{
+ const GValue *val;
+
+ g_return_val_if_fail (GST_IS_MESSAGE (msg), 0);
+ g_return_val_if_fail (GST_MESSAGE_TYPE (msg) == GST_MESSAGE_STREAMS_SELECTED,
+ 0);
+
+ val =
+ gst_structure_id_get_value (GST_MESSAGE_STRUCTURE (msg),
+ GST_QUARK (STREAMS));
+ return gst_value_array_get_size (val);
+}
+
+/**
+ * gst_message_streams_selected_add:
+ * @message: a #GstMessage of type %GST_MESSAGE_STREAMS_SELECTED
+ * @stream: (transfer none): a #GstStream to add to @message
+ *
+ * Adds the @stream to the @message.
+ *
+ * Since: 1.10
+ */
+void
+gst_message_streams_selected_add (GstMessage * msg, GstStream * stream)
+{
+ GValue *val;
+ GValue to_add = G_VALUE_INIT;
+
+ g_return_if_fail (GST_IS_MESSAGE (msg));
+ g_return_if_fail (GST_MESSAGE_TYPE (msg) == GST_MESSAGE_STREAMS_SELECTED);
+ g_return_if_fail (GST_IS_STREAM (stream));
+
+ val =
+ (GValue *) gst_structure_id_get_value (GST_MESSAGE_STRUCTURE (msg),
+ GST_QUARK (STREAMS));
+ g_value_init (&to_add, GST_TYPE_STREAM);
+ g_value_set_object (&to_add, stream);
+ gst_value_array_append_and_take_value (val, &to_add);
+}
+
+/**
+ * gst_message_streams_selected_get_stream:
+ * @message: a #GstMessage of type %GST_MESSAGE_STREAMS_SELECTED
+ * @idx: Index of the stream to retrieve
+ *
+ * Retrieves the #GstStream with index @index from the @message.
+ *
+ * Returns: (transfer full) (nullable): A #GstStream
+ *
+ * Since: 1.10
+ */
+GstStream *
+gst_message_streams_selected_get_stream (GstMessage * msg, guint idx)
+{
+ const GValue *streams, *val;
+
+ g_return_val_if_fail (GST_IS_MESSAGE (msg), NULL);
+ g_return_val_if_fail (GST_MESSAGE_TYPE (msg) == GST_MESSAGE_STREAMS_SELECTED,
+ NULL);
+
+ streams =
+ gst_structure_id_get_value (GST_MESSAGE_STRUCTURE (msg),
+ GST_QUARK (STREAMS));
+ val = gst_value_array_get_value (streams, idx);
+ if (val) {
+ return (GstStream *) g_value_dup_object (val);
+ }
+
+ return NULL;
+}
+
+/**
+ * gst_message_parse_streams_selected:
+ * @message: a #GstMessage of type %GST_MESSAGE_STREAMS_SELECTED
+ * @collection: (out) (allow-none) (transfer full): A location where to store a
+ * pointer to the #GstStreamCollection, or %NULL
+ *
+ * Parses a streams-selected message.
+ *
+ * Since: 1.10
+ */
+void
+gst_message_parse_streams_selected (GstMessage * message,
+ GstStreamCollection ** collection)
+{
+ g_return_if_fail (GST_IS_MESSAGE (message));
+ g_return_if_fail (GST_MESSAGE_TYPE (message) == GST_MESSAGE_STREAMS_SELECTED);
+
+ if (collection)
+ gst_structure_id_get (GST_MESSAGE_STRUCTURE (message),
+ GST_QUARK (COLLECTION), GST_TYPE_STREAM_COLLECTION, collection, NULL);
+}
+
+/**
+ * gst_message_new_redirect:
+ * @src: The #GstObject whose property changed (may or may not be a #GstElement)
+ * @location: (transfer none): location string for the new entry
+ * @tag_list: (transfer full) (allow-none): tag list for the new entry
+ * @entry_struct: (transfer full) (allow-none): structure for the new entry
+ *
+ * Creates a new redirect message and adds a new entry to it. Redirect messages
+ * are posted when an element detects that the actual data has to be retrieved
+ * from a different location. This is useful if such a redirection cannot be
+ * handled inside a source element, for example when HTTP 302/303 redirects
+ * return a non-HTTP URL.
+ *
+ * The redirect message can hold multiple entries. The first one is added
+ * when the redirect message is created, with the given location, tag_list,
+ * entry_struct arguments. Use gst_message_add_redirect_entry() to add more
+ * entries.
+ *
+ * Each entry has a location, a tag list, and a structure. All of these are
+ * optional. The tag list and structure are useful for additional metadata,
+ * such as bitrate statistics for the given location.
+ *
+ * By default, message recipients should treat entries in the order they are
+ * stored. The recipient should therefore try entry #0 first, and if this
+ * entry is not acceptable or working, try entry #1 etc. Senders must make
+ * sure that they add entries in this order. However, recipients are free to
+ * ignore the order and pick an entry that is "best" for them. One example
+ * would be a recipient that scans the entries for the one with the highest
+ * bitrate tag.
+ *
+ * The specified location string is copied. However, ownership over the tag
+ * list and structure are transferred to the message.
+ *
+ * Returns: a newly allocated #GstMessage
+ *
+ * Since: 1.10
+ */
+GstMessage *
+gst_message_new_redirect (GstObject * src, const gchar * location,
+ GstTagList * tag_list, const GstStructure * entry_struct)
+{
+ GstStructure *structure;
+ GstMessage *message;
+ GValue entry_locations_gvalue = G_VALUE_INIT;
+ GValue entry_taglists_gvalue = G_VALUE_INIT;
+ GValue entry_structures_gvalue = G_VALUE_INIT;
+
+ g_return_val_if_fail (location != NULL, NULL);
+
+ g_value_init (&entry_locations_gvalue, GST_TYPE_LIST);
+ g_value_init (&entry_taglists_gvalue, GST_TYPE_LIST);
+ g_value_init (&entry_structures_gvalue, GST_TYPE_LIST);
+
+ structure = gst_structure_new_id_empty (GST_QUARK (MESSAGE_REDIRECT));
+ gst_structure_id_take_value (structure, GST_QUARK (REDIRECT_ENTRY_LOCATIONS),
+ &entry_locations_gvalue);
+ gst_structure_id_take_value (structure, GST_QUARK (REDIRECT_ENTRY_TAGLISTS),
+ &entry_taglists_gvalue);
+ gst_structure_id_take_value (structure, GST_QUARK (REDIRECT_ENTRY_STRUCTURES),
+ &entry_structures_gvalue);
+
+ message = gst_message_new_custom (GST_MESSAGE_REDIRECT, src, structure);
+ g_assert (message != NULL);
+
+ gst_message_add_redirect_entry (message, location, tag_list, entry_struct);
+
+ return message;
+}
+
+/**
+ * gst_message_add_redirect_entry:
+ * @message: a #GstMessage of type %GST_MESSAGE_REDIRECT
+ * @location: (transfer none): location string for the new entry
+ * @tag_list: (transfer full) (allow-none): tag list for the new entry
+ * @entry_struct: (transfer full) (allow-none): structure for the new entry
+ *
+ * Creates and appends a new entry.
+ *
+ * The specified location string is copied. However, ownership over the tag
+ * list and structure are transferred to the message.
+ *
+ * Since: 1.10
+ */
+void
+gst_message_add_redirect_entry (GstMessage * message, const gchar * location,
+ GstTagList * tag_list, const GstStructure * entry_struct)
+{
+ GValue val = G_VALUE_INIT;
+ GstStructure *structure;
+ GValue *entry_locations_gvalue;
+ GValue *entry_taglists_gvalue;
+ GValue *entry_structures_gvalue;
+
+ g_return_if_fail (location != NULL);
+ g_return_if_fail (GST_IS_MESSAGE (message));
+ g_return_if_fail (GST_MESSAGE_TYPE (message) == GST_MESSAGE_REDIRECT);
+
+ structure = GST_MESSAGE_STRUCTURE (message);
+
+ entry_locations_gvalue =
+ (GValue *) gst_structure_id_get_value (structure,
+ GST_QUARK (REDIRECT_ENTRY_LOCATIONS));
+ g_return_if_fail (GST_VALUE_HOLDS_LIST (entry_locations_gvalue));
+ entry_taglists_gvalue =
+ (GValue *) gst_structure_id_get_value (structure,
+ GST_QUARK (REDIRECT_ENTRY_TAGLISTS));
+ g_return_if_fail (GST_VALUE_HOLDS_LIST (entry_taglists_gvalue));
+ entry_structures_gvalue =
+ (GValue *) gst_structure_id_get_value (structure,
+ GST_QUARK (REDIRECT_ENTRY_STRUCTURES));
+ g_return_if_fail (GST_VALUE_HOLDS_LIST (entry_structures_gvalue));
+
+ g_value_init (&val, G_TYPE_STRING);
+ if (location)
+ g_value_set_string (&val, location);
+ gst_value_list_append_and_take_value (entry_locations_gvalue, &val);
+
+ g_value_init (&val, GST_TYPE_TAG_LIST);
+ if (tag_list)
+ g_value_take_boxed (&val, tag_list);
+ gst_value_list_append_and_take_value (entry_taglists_gvalue, &val);
+
+ g_value_init (&val, GST_TYPE_STRUCTURE);
+ if (entry_struct)
+ g_value_take_boxed (&val, entry_struct);
+ gst_value_list_append_and_take_value (entry_structures_gvalue, &val);
+}
+
+/**
+ * gst_message_parse_redirect_entry:
+ * @message: a #GstMessage of type %GST_MESSAGE_REDIRECT
+ * @entry_index: index of the entry to parse
+ * @location: (out) (transfer none) (allow-none): return location for
+ * the pointer to the entry's location string, or %NULL
+ * @tag_list: (out) (transfer none) (allow-none): return location for
+ * the pointer to the entry's tag list, or %NULL
+ * @entry_struct: (out) (transfer none) (allow-none): return location
+ * for the pointer to the entry's structure, or %NULL
+ *
+ * Parses the location and/or structure from the entry with the given index.
+ * The index must be between 0 and gst_message_get_num_redirect_entries() - 1.
+ * Returned pointers are valid for as long as this message exists.
+ *
+ * Since: 1.10
+ */
+void
+gst_message_parse_redirect_entry (GstMessage * message, gsize entry_index,
+ const gchar ** location, GstTagList ** tag_list,
+ const GstStructure ** entry_struct)
+{
+ const GValue *val;
+ GstStructure *structure;
+ const GValue *entry_locations_gvalue;
+ const GValue *entry_taglists_gvalue;
+ const GValue *entry_structures_gvalue;
+
+ g_return_if_fail (GST_IS_MESSAGE (message));
+ g_return_if_fail (GST_MESSAGE_TYPE (message) == GST_MESSAGE_REDIRECT);
+
+ if (G_UNLIKELY (!location && !tag_list && !entry_struct))
+ return;
+
+ structure = GST_MESSAGE_STRUCTURE (message);
+
+ entry_locations_gvalue =
+ gst_structure_id_get_value (structure,
+ GST_QUARK (REDIRECT_ENTRY_LOCATIONS));
+ g_return_if_fail (GST_VALUE_HOLDS_LIST (entry_locations_gvalue));
+ entry_taglists_gvalue =
+ gst_structure_id_get_value (structure,
+ GST_QUARK (REDIRECT_ENTRY_TAGLISTS));
+ g_return_if_fail (GST_VALUE_HOLDS_LIST (entry_taglists_gvalue));
+ entry_structures_gvalue =
+ gst_structure_id_get_value (structure,
+ GST_QUARK (REDIRECT_ENTRY_STRUCTURES));
+ g_return_if_fail (GST_VALUE_HOLDS_LIST (entry_structures_gvalue));
+
+ if (location) {
+ val = gst_value_list_get_value (entry_locations_gvalue, entry_index);
+ g_return_if_fail (val != NULL);
+ *location = g_value_get_string (val);
+ }
+
+ if (tag_list) {
+ val = gst_value_list_get_value (entry_taglists_gvalue, entry_index);
+ g_return_if_fail (val != NULL);
+ *tag_list = (GstTagList *) g_value_get_boxed (val);
+ }
+
+ if (entry_struct) {
+ val = gst_value_list_get_value (entry_structures_gvalue, entry_index);
+ g_return_if_fail (val != NULL);
+ *entry_struct = (const GstStructure *) g_value_get_boxed (val);
+ }
+}
+
+/**
+ * gst_message_get_num_redirect_entries:
+ * @message: a #GstMessage of type %GST_MESSAGE_REDIRECT
+ *
+ * Returns: the number of entries stored in the message
+ *
+ * Since: 1.10
+ */
+gsize
+gst_message_get_num_redirect_entries (GstMessage * message)
+{
+ GstStructure *structure;
+ const GValue *entry_locations_gvalue;
+ const GValue *entry_taglists_gvalue;
+ const GValue *entry_structures_gvalue;
+ gsize size;
+
+ g_return_val_if_fail (GST_IS_MESSAGE (message), 0);
+ g_return_val_if_fail (GST_MESSAGE_TYPE (message) == GST_MESSAGE_REDIRECT, 0);
+
+ structure = GST_MESSAGE_STRUCTURE (message);
+
+ entry_locations_gvalue =
+ gst_structure_id_get_value (structure,
+ GST_QUARK (REDIRECT_ENTRY_LOCATIONS));
+ g_return_val_if_fail (GST_VALUE_HOLDS_LIST (entry_locations_gvalue), 0);
+ entry_taglists_gvalue =
+ gst_structure_id_get_value (structure,
+ GST_QUARK (REDIRECT_ENTRY_TAGLISTS));
+ g_return_val_if_fail (GST_VALUE_HOLDS_LIST (entry_taglists_gvalue), 0);
+ entry_structures_gvalue =
+ gst_structure_id_get_value (structure,
+ GST_QUARK (REDIRECT_ENTRY_STRUCTURES));
+ g_return_val_if_fail (GST_VALUE_HOLDS_LIST (entry_structures_gvalue), 0);
+
+ size = gst_value_list_get_size (entry_locations_gvalue);
+
+ g_return_val_if_fail ((size ==
+ gst_value_list_get_size (entry_structures_gvalue))
+ && (size == gst_value_list_get_size (entry_taglists_gvalue)), 0);
+
+ return size;
+}
projects / platform / upstream / gstreamer.git / blobdiff