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rtspsrc: add select-stream signal

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Add a signal to let the app select what streams will be selected.

See https://bugzilla.gnome.org/show_bug.cgi?id=634419
This commit is contained in:
Wim Taymans 2013-07-02 10:37:50 +02:00
parent 2d276e1bcb
commit 7c950ef3f2
1 changed files with 53 additions and 1 deletions
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54
gst/rtsp/gstrtspsrc.c
View file

@ -122,6 +122,7 @@ enum
{
SIGNAL_HANDLE_REQUEST,
SIGNAL_ON_SDP,
SIGNAL_SELECT_STREAM,
LAST_SIGNAL
};
@ -313,6 +314,27 @@ static guint gst_rtspsrc_signals[LAST_SIGNAL] = { 0 };
G_DEFINE_TYPE_WITH_CODE (GstRTSPSrc, gst_rtspsrc, GST_TYPE_BIN,
G_IMPLEMENT_INTERFACE (GST_TYPE_URI_HANDLER, gst_rtspsrc_uri_handler_init));
static gboolean
default_select_stream (GstRTSPSrc * src, guint id, GstCaps * caps)
{
GST_DEBUG_OBJECT (src, "default handler");
return TRUE;
}
static gboolean
select_stream_accum (GSignalInvocationHint * ihint,
GValue * return_accu, const GValue * handler_return, gpointer data)
{
gboolean myboolean;
myboolean = g_value_get_boolean (handler_return);
GST_DEBUG ("accum %d", myboolean);
g_value_set_boolean (return_accu, myboolean);
/* stop emission if FALSE */
return myboolean;
}
static void
gst_rtspsrc_class_init (GstRTSPSrcClass * klass)
{
@ -595,6 +617,27 @@ gst_rtspsrc_class_init (GstRTSPSrcClass * klass)
0, NULL, NULL, g_cclosure_marshal_generic, G_TYPE_NONE, 1,
GST_TYPE_SDP_MESSAGE | G_SIGNAL_TYPE_STATIC_SCOPE);
/**
* GstRTSPSrc::select-stream:
* @rtspsrc: a #GstRTSPSrc
* @num: the stream number
* @caps: the stream caps
*
* Emited before the client decides to configure the stream @num with
* @caps.
*
* Returns: %TRUE when the stream should be selected, %FALSE when the stream
* is to be ignored.
*
* Since: 1.2
*/
gst_rtspsrc_signals[SIGNAL_SELECT_STREAM] =
g_signal_new_class_handler ("select-stream", G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_FIRST | G_SIGNAL_RUN_CLEANUP,
(GCallback) default_select_stream, select_stream_accum, NULL,
g_cclosure_marshal_generic, G_TYPE_BOOLEAN, 2, G_TYPE_UINT,
GST_TYPE_CAPS);
gstelement_class->send_event = gst_rtspsrc_send_event;
gstelement_class->provide_clock = gst_rtspsrc_provide_clock;
gstelement_class->change_state = gst_rtspsrc_change_state;
@ -614,7 +657,6 @@ gst_rtspsrc_class_init (GstRTSPSrcClass * klass)
gst_rtsp_ext_list_init ();
}
static void
gst_rtspsrc_init (GstRTSPSrc * src)
{
@ -5359,6 +5401,7 @@ gst_rtspsrc_setup_streams (GstRTSPSrc * src, gboolean async)
gchar *transports;
gint retry = 0;
guint mask = 0;
gboolean selected;
stream = (GstRTSPStream *) walk->data;
@ -5370,6 +5413,15 @@ gst_rtspsrc_setup_streams (GstRTSPSrc * src, gboolean async)
continue;
}
g_signal_emit (src, gst_rtspsrc_signals[SIGNAL_SELECT_STREAM], 0,
stream->id, stream->caps, &selected);
if (!selected) {
GST_DEBUG_OBJECT (src, "skipping stream %p, disabled by signal", stream);
stream->disabled = TRUE;
continue;
}
stream->disabled = FALSE;
/* merge/overwrite global caps */
if (stream->caps) {
guint j, num;