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media: start media pipeline in context

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Start the media pipeline in the provided context (or our default one
when NULL). This makes sure that we run the bus thread in this context and that
all media threads are children of this context.
This commit is contained in:
Wim Taymans 2013-07-09 20:44:51 +02:00
parent ca28a46600
commit c4c9c873b8
1 changed files with 94 additions and 68 deletions
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162
gst/rtsp-server/rtsp-media.c
View file

@ -1556,78 +1556,14 @@ struct _DynPaySignalHandlers
gulong no_more_pads_handler; gulong no_more_pads_handler;
}; };
/** static gboolean
* gst_rtsp_media_prepare: start_prepare (GstRTSPMedia * media)
* @media: a #GstRTSPMedia
* @context: a #GMainContext to run the bus handler or %NULL
*
* Prepare @media for streaming. This function will create the objects
* to manage the streaming. A pipeline must have been set on @media with
* gst_rtsp_media_take_pipeline().
*
* It will preroll the pipeline and collect vital information about the streams
* such as the duration.
*
* Returns: %TRUE on success.
*/
gboolean
gst_rtsp_media_prepare (GstRTSPMedia * media, GMainContext * context)
{ {
GstRTSPMediaPrivate *priv; GstRTSPMediaPrivate *priv = media->priv;
GstStateChangeReturn ret; GstStateChangeReturn ret;
GstRTSPMediaStatus status;
guint i; guint i;
GstRTSPMediaClass *klass;
GstBus *bus;
GList *walk; GList *walk;
g_return_val_if_fail (GST_IS_RTSP_MEDIA (media), FALSE);
priv = media->priv;
g_rec_mutex_lock (&priv->state_lock);
priv->prepare_count++;
if (priv->status == GST_RTSP_MEDIA_STATUS_PREPARED)
goto was_prepared;
if (priv->status == GST_RTSP_MEDIA_STATUS_PREPARING)
goto wait_status;
if (priv->status != GST_RTSP_MEDIA_STATUS_UNPREPARED)
goto not_unprepared;
if (!priv->reusable && priv->reused)
goto is_reused;
priv->rtpbin = gst_element_factory_make ("rtpbin", NULL);
if (priv->rtpbin == NULL)
goto no_rtpbin;
GST_INFO ("preparing media %p", media);
/* reset some variables */
priv->is_live = FALSE;
priv->seekable = FALSE;
priv->buffering = FALSE;
/* we're preparing now */
priv->status = GST_RTSP_MEDIA_STATUS_PREPARING;
bus = gst_pipeline_get_bus (GST_PIPELINE_CAST (priv->pipeline));
/* add the pipeline bus to our custom mainloop */
priv->source = gst_bus_create_watch (bus);
gst_object_unref (bus);
g_source_set_callback (priv->source, (GSourceFunc) bus_message,
g_object_ref (media), (GDestroyNotify) watch_destroyed);
klass = GST_RTSP_MEDIA_GET_CLASS (media);
priv->id = g_source_attach (priv->source, context ? context : klass->context);
/* add stuff to the bin */
gst_bin_add (GST_BIN (priv->pipeline), priv->rtpbin);
/* link streams we already have, other streams might appear when we have /* link streams we already have, other streams might appear when we have
* dynamic elements */ * dynamic elements */
for (i = 0; i < priv->streams->len; i++) { for (i = 0; i < priv->streams->len; i++) {
@ -1688,6 +1624,97 @@ gst_rtsp_media_prepare (GstRTSPMedia * media, GMainContext * context)
case GST_STATE_CHANGE_FAILURE: case GST_STATE_CHANGE_FAILURE:
goto state_failed; goto state_failed;
} }
return FALSE;
state_failed:
{
GST_WARNING ("failed to preroll pipeline");
gst_rtsp_media_set_status (media, GST_RTSP_MEDIA_STATUS_ERROR);
return FALSE;
}
}
/**
* gst_rtsp_media_prepare:
* @media: a #GstRTSPMedia
* @context: a #GMainContext to run the bus handler or %NULL
*
* Prepare @media for streaming. This function will create the objects
* to manage the streaming. A pipeline must have been set on @media with
* gst_rtsp_media_take_pipeline().
*
* It will preroll the pipeline and collect vital information about the streams
* such as the duration.
*
* Returns: %TRUE on success.
*/
gboolean
gst_rtsp_media_prepare (GstRTSPMedia * media, GMainContext * context)
{
GstRTSPMediaPrivate *priv;
GstRTSPMediaStatus status;
GstRTSPMediaClass *klass;
GstBus *bus;
GSource *source;
g_return_val_if_fail (GST_IS_RTSP_MEDIA (media), FALSE);
priv = media->priv;
g_rec_mutex_lock (&priv->state_lock);
priv->prepare_count++;
if (priv->status == GST_RTSP_MEDIA_STATUS_PREPARED)
goto was_prepared;
if (priv->status == GST_RTSP_MEDIA_STATUS_PREPARING)
goto wait_status;
if (priv->status != GST_RTSP_MEDIA_STATUS_UNPREPARED)
goto not_unprepared;
if (!priv->reusable && priv->reused)
goto is_reused;
priv->rtpbin = gst_element_factory_make ("rtpbin", NULL);
if (priv->rtpbin == NULL)
goto no_rtpbin;
GST_INFO ("preparing media %p", media);
/* reset some variables */
priv->is_live = FALSE;
priv->seekable = FALSE;
priv->buffering = FALSE;
/* we're preparing now */
priv->status = GST_RTSP_MEDIA_STATUS_PREPARING;
klass = GST_RTSP_MEDIA_GET_CLASS (media);
if (context == NULL)
context = klass->context;
bus = gst_pipeline_get_bus (GST_PIPELINE_CAST (priv->pipeline));
/* add the pipeline bus to our custom mainloop */
priv->source = gst_bus_create_watch (bus);
gst_object_unref (bus);
g_source_set_callback (priv->source, (GSourceFunc) bus_message,
g_object_ref (media), (GDestroyNotify) watch_destroyed);
priv->id = g_source_attach (priv->source, context);
/* add stuff to the bin */
gst_bin_add (GST_BIN (priv->pipeline), priv->rtpbin);
/* do remainder in context */
source = g_idle_source_new ();
g_source_set_callback (source, (GSourceFunc) start_prepare, media, NULL);
g_source_attach (source, context);
g_source_unref (source);
wait_status: wait_status:
g_rec_mutex_unlock (&priv->state_lock); g_rec_mutex_unlock (&priv->state_lock);
@ -1737,7 +1764,6 @@ state_failed:
{ {
GST_WARNING ("failed to preroll pipeline"); GST_WARNING ("failed to preroll pipeline");
gst_rtsp_media_unprepare (media); gst_rtsp_media_unprepare (media);
g_rec_mutex_unlock (&priv->state_lock);
return FALSE; return FALSE;
} }
} }