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gst/gstbus.*: Added async-message and sync-message signals to the bus.
Original commit message from CVS: * gst/gstbus.c: (marshal_VOID__MINIOBJECT), (gst_bus_class_init), (gst_bus_post), (poll_func), (gst_bus_async_signal_func), (gst_bus_sync_signal_handler): * gst/gstbus.h: Added async-message and sync-message signals to the bus. Added helper BusFunc to emit signals for all posted messages. * gst/gstmessage.c: (gst_message_type_get_name), (gst_message_type_to_quark), (gst_message_get_type): * gst/gstmessage.h: Register quarks for message names.
This commit is contained in:
Wim Taymans
parent
d6b67a4dd8
commit
bf443a4639
5 changed files with 204 additions and 8 deletions
14
ChangeLog
14
ChangeLog
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@ -1,3 +1,17 @@
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2005-09-28 Wim Taymans <wim@fluendo.com>
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* gst/gstbus.c: (marshal_VOID__MINIOBJECT), (gst_bus_class_init),
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(gst_bus_post), (poll_func), (gst_bus_async_signal_func),
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(gst_bus_sync_signal_handler):
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* gst/gstbus.h:
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Added async-message and sync-message signals to the bus.
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Added helper BusFunc to emit signals for all posted messages.
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* gst/gstmessage.c: (gst_message_type_get_name),
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(gst_message_type_to_quark), (gst_message_get_type):
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* gst/gstmessage.h:
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Register quarks for message names.
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2005-09-28 Stefan Kost <ensonic@users.sf.net>
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* docs/libs/gstreamer-libs-sections.txt:
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124
gst/gstbus.c
124
gst/gstbus.c
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@ -68,6 +68,14 @@
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#include "gstbus.h"
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/* bus signals */
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enum
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{
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SYNC_MESSAGE,
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ASYNC_MESSAGE,
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/* add more above */
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LAST_SIGNAL
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};
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static void gst_bus_class_init (GstBusClass * klass);
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static void gst_bus_init (GstBus * bus);
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@ -79,8 +87,7 @@ static void gst_bus_get_property (GObject * object, guint prop_id,
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GValue * value, GParamSpec * pspec);
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static GstObjectClass *parent_class = NULL;
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/* static guint gst_bus_signals[LAST_SIGNAL] = { 0 }; */
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static guint gst_bus_signals[LAST_SIGNAL] = { 0 };
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GType
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gst_bus_get_type (void)
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@ -106,6 +113,34 @@ gst_bus_get_type (void)
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return bus_type;
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}
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/* fixme: do something about this */
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static void
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marshal_VOID__MINIOBJECT (GClosure * closure, GValue * return_value,
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guint n_param_values, const GValue * param_values, gpointer invocation_hint,
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gpointer marshal_data)
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{
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typedef void (*marshalfunc_VOID__MINIOBJECT) (gpointer obj, gpointer arg1,
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gpointer data2);
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register marshalfunc_VOID__MINIOBJECT callback;
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register GCClosure *cc = (GCClosure *) closure;
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register gpointer data1, data2;
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g_return_if_fail (n_param_values == 2);
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if (G_CCLOSURE_SWAP_DATA (closure)) {
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data1 = closure->data;
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data2 = g_value_peek_pointer (param_values + 0);
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} else {
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data1 = g_value_peek_pointer (param_values + 0);
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data2 = closure->data;
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}
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callback =
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(marshalfunc_VOID__MINIOBJECT) (marshal_data ? marshal_data : cc->
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callback);
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callback (data1, gst_value_get_mini_object (param_values + 1), data2);
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}
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static void
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gst_bus_class_init (GstBusClass * klass)
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{
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@ -123,6 +158,34 @@ gst_bus_class_init (GstBusClass * klass)
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gobject_class->dispose = GST_DEBUG_FUNCPTR (gst_bus_dispose);
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gobject_class->set_property = GST_DEBUG_FUNCPTR (gst_bus_set_property);
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gobject_class->get_property = GST_DEBUG_FUNCPTR (gst_bus_get_property);
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/**
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* GstBus::sync-message:
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* @bus: the object which received the signal
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* @message: the message that has been posted synchronously
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*
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* A message has been posted on the bus. This signal is emited from the
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* thread that posted the message so one has to be carefull with locking.
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*/
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gst_bus_signals[SYNC_MESSAGE] =
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g_signal_new ("sync-message", G_TYPE_FROM_CLASS (klass),
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G_SIGNAL_RUN_LAST | G_SIGNAL_DETAILED,
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G_STRUCT_OFFSET (GstBusClass, sync_message), NULL, NULL,
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marshal_VOID__MINIOBJECT, G_TYPE_NONE, 1, GST_TYPE_MESSAGE);
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/**
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* GstBus::async-message:
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* @bus: the object which received the signal
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* @message: the message that has been posted asynchronously
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*
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* A message has been posted on the bus. This signal is emited from a
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* GSource added to the mainloop.
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*/
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gst_bus_signals[ASYNC_MESSAGE] =
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g_signal_new ("async-message", G_TYPE_FROM_CLASS (klass),
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G_SIGNAL_RUN_LAST | G_SIGNAL_DETAILED,
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G_STRUCT_OFFSET (GstBusClass, async_message), NULL, NULL,
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marshal_VOID__MINIOBJECT, G_TYPE_NONE, 1, GST_TYPE_MESSAGE);
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}
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static void
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@ -231,8 +294,8 @@ gst_bus_post (GstBus * bus, GstMessage * message)
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g_return_val_if_fail (GST_IS_BUS (bus), FALSE);
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g_return_val_if_fail (GST_IS_MESSAGE (message), FALSE);
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GST_DEBUG_OBJECT (bus, "[msg %p] posting on bus, type %d",
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message, GST_MESSAGE_TYPE (message));
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GST_DEBUG_OBJECT (bus, "[msg %p] posting on bus, type %s",
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message, gst_message_type_get_name (GST_MESSAGE_TYPE (message)));
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GST_LOCK (bus);
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/* check if the bus is flushing */
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@ -382,6 +445,7 @@ gst_bus_set_flushing (GstBus * bus, gboolean flushing)
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GST_UNLOCK (bus);
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}
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/**
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* gst_bus_pop:
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* @bus: a #GstBus to pop
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@ -671,9 +735,8 @@ poll_func (GstBus * bus, GstMessage * message, GstBusPollData * poll_data)
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poll_data->message = gst_message_ref (message);
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GST_DEBUG ("mainloop %p quit", poll_data->loop);
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g_main_loop_quit (poll_data->loop);
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} else {
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/* don't remove the source. */
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}
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/* we always keep the source alive so that we don't accidentialy
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* free the poll_data */
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return TRUE;
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@ -721,6 +784,8 @@ poll_destroy_timeout (GstBusPollData * poll_data)
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* specify a maximum time to poll with the @timeout parameter. If @timeout is
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* negative, this function will block indefinitely.
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*
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* All messages not in @events will be popped off the bus and will be ignored.
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*
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* This function will enter the default mainloop while polling.
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*
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* Returns: The message that was received, or NULL if the poll timed out.
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@ -765,3 +830,50 @@ gst_bus_poll (GstBus * bus, GstMessageType events, GstClockTimeDiff timeout)
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return ret;
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}
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/**
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* gst_bus_async_signal_func:
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* @bus: a #GstBus
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* @message: the message received
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* @data: user data
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*
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* A helper GstBusFunc that can be used to convert all asynchronous messages
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* into signals.
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*
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* Returns: TRUE
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*/
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gboolean
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gst_bus_async_signal_func (GstBus * bus, GstMessage * message, gpointer data)
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{
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GQuark detail = 0;
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detail = gst_message_type_to_quark (GST_MESSAGE_TYPE (message));
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g_signal_emit (bus, gst_bus_signals[ASYNC_MESSAGE], detail, message);
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/* we never remove this source based on signal emission return values */
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return TRUE;
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}
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/**
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* gst_bus_sync_signal_handler:
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* @bus: a #GstBus
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* @message: the message received
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* @data: user data
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*
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* A helper GstBusSyncHandler that can be used to convert all synchronous
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* messages into signals.
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*
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* Returns: GST_BUS_PASS
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*/
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GstBusSyncReply
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gst_bus_sync_signal_handler (GstBus * bus, GstMessage * message, gpointer data)
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{
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GQuark detail = 0;
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detail = gst_message_type_to_quark (GST_MESSAGE_TYPE (message));
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g_signal_emit (bus, gst_bus_signals[SYNC_MESSAGE], detail, message);
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return GST_BUS_PASS;
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}
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14
gst/gstbus.h
14
gst/gstbus.h
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@ -102,6 +102,10 @@ struct _GstBusClass
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{
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GstObjectClass parent_class;
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/* signals */
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void (*sync_message) (GstBus *bus, GstMessage *message);
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void (*async_message) (GstBus *bus, GstMessage *message);
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/*< private > */
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gpointer _gst_reserved[GST_PADDING];
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};
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@ -117,9 +121,10 @@ GstMessage * gst_bus_peek (GstBus * bus);
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GstMessage * gst_bus_pop (GstBus * bus);
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void gst_bus_set_flushing (GstBus * bus, gboolean flushing);
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/* synchronous dispatching */
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void gst_bus_set_sync_handler (GstBus * bus, GstBusSyncHandler func,
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gpointer data);
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/* GSource based dispatching */
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GSource * gst_bus_create_watch (GstBus * bus, GstMessageType events);
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guint gst_bus_add_watch_full (GstBus * bus,
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gint priority,
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@ -132,9 +137,16 @@ guint gst_bus_add_watch (GstBus * bus,
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GstBusFunc func,
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gpointer user_data);
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/* polling the bus */
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GstMessage* gst_bus_poll (GstBus *bus, GstMessageType events,
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GstClockTimeDiff timeout);
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/* signal based dispatching helper functions. */
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gboolean gst_bus_async_signal_func (GstBus *bus, GstMessage *message,
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gpointer data);
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GstBusSyncReply gst_bus_sync_signal_handler (GstBus *bus, GstMessage *message,
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gpointer data);
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G_END_DECLS
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#endif /* __GST_BUS_H__ */
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@ -47,7 +47,6 @@ static void gst_message_class_init (gpointer g_class, gpointer class_data);
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static void gst_message_finalize (GstMessage * message);
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static GstMessage *_gst_message_copy (GstMessage * message);
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void
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_gst_message_initialize (void)
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{
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@ -64,12 +63,63 @@ _gst_message_initialize (void)
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g_type_class_unref (ptr);
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}
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typedef struct
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{
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gint type;
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gchar *name;
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GQuark quark;
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} GstMessageQuarks;
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static GstMessageQuarks message_quarks[] = {
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{GST_MESSAGE_UNKNOWN, "unknown", 0},
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{GST_MESSAGE_EOS, "eos", 0},
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{GST_MESSAGE_ERROR, "error", 0},
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{GST_MESSAGE_WARNING, "warning", 0},
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{GST_MESSAGE_INFO, "info", 0},
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{GST_MESSAGE_TAG, "tag", 0},
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{GST_MESSAGE_BUFFERING, "buffering", 0},
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{GST_MESSAGE_STATE_CHANGED, "state-changed", 0},
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{GST_MESSAGE_STEP_DONE, "step-done", 0},
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{GST_MESSAGE_NEW_CLOCK, "new-clock", 0},
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{GST_MESSAGE_STRUCTURE_CHANGE, "structure-change", 0},
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{GST_MESSAGE_STREAM_STATUS, "stream-status", 0},
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{GST_MESSAGE_APPLICATION, "application", 0},
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{GST_MESSAGE_SEGMENT_START, "segment-start", 0},
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{GST_MESSAGE_SEGMENT_DONE, "segment-done", 0},
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{0, NULL, 0}
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};
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const gchar *
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gst_message_type_get_name (GstMessageType type)
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{
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gint i;
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for (i = 0; message_quarks[i].name; i++) {
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if (type == message_quarks[i].type)
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return message_quarks[i].name;
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}
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return "unknown";
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}
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GQuark
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gst_message_type_to_quark (GstMessageType type)
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{
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gint i;
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for (i = 0; message_quarks[i].name; i++) {
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if (type == message_quarks[i].type)
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return message_quarks[i].quark;
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}
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return 0;
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}
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GType
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gst_message_get_type (void)
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{
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static GType _gst_message_type;
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if (G_UNLIKELY (_gst_message_type == 0)) {
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gint i;
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static const GTypeInfo message_info = {
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sizeof (GstMessageClass),
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NULL,
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@ -85,6 +135,11 @@ gst_message_get_type (void)
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_gst_message_type = g_type_register_static (GST_TYPE_MINI_OBJECT,
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"GstMessage", &message_info, 0);
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for (i = 0; message_quarks[i].name; i++) {
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message_quarks[i].quark =
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g_quark_from_static_string (message_quarks[i].name);
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}
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}
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return _gst_message_type;
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}
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@ -127,6 +127,9 @@ void _gst_message_initialize (void);
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GType gst_message_get_type (void);
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const gchar* gst_message_type_get_name (GstMessageType type);
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GQuark gst_message_type_to_quark (GstMessageType type);
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/* refcounting */
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#define gst_message_ref(msg) GST_MESSAGE (gst_mini_object_ref (GST_MINI_OBJECT (msg)))
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#define gst_message_unref(msg) gst_mini_object_unref (GST_MINI_OBJECT (msg))
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