<html xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns:m="http://schemas.microsoft.com/office/2004/12/omml" xmlns="http://www.w3.org/TR/REC-html40"><head><meta http-equiv=Content-Type content="text/html; charset=us-ascii"><meta name=Generator content="Microsoft Word 14 (filtered medium)"><style></style></head><body lang=EN-US link=blue vlink=purple><div class=WordSection1>Can anybody else tell me if I’m handling the creation and destruction of the pipeline and its resources correctly? I’m trying to figure out if this is the cause of the apparent memory leak.<o:p></o:p><o:p> </o:p>Thanks,<o:p></o:p>Jim<o:p></o:p><a name="_MailEndCompose"><o:p> </o:p></a><div><div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in'>From: gstreamer-devel-bounces+restlessmindsstudio=gmail.com@lists.freedesktop.org [mailto:gstreamer-devel-bounces+restlessmindsstudio=gmail.com@lists.freedesktop.org] On Behalf Of Bernhard Graaf Sent: Wednesday, February 20, 2013 1:37 PM To: 'Discussion of the development of and with GStreamer' Subject: AW: Properly freeing resources<o:p></o:p></div></div><o:p> </o:p>Does it helps?<o:p></o:p><o:p> </o:p><o:p> </o:p><div><div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in'>Von: <a href="mailto:gstreamer-devel-bounces+bernhard.graaf=gmx.de@lists.freedesktop.org">gstreamer-devel-bounces+bernhard.graaf=gmx.de@lists.freedesktop.org</a> [<a href="mailto:gstreamer-devel-bounces+bernhard.graaf=gmx.de@lists.freedesktop.org">mailto:gstreamer-devel-bounces+bernhard.graaf=gmx.de@lists.freedesktop.org</a>] Im Auftrag von Jim Gesendet: Mittwoch, 20. Februar 2013 15:41 An: 'Discussion of the development of and with GStreamer' Betreff: RE: Properly freeing resources<o:p></o:p></div></div><o:p> </o:p>Thanks I’ll give that a try!<o:p></o:p><o:p> </o:p>Jim<o:p></o:p><o:p> </o:p><div><div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in'>From: <a href="mailto:gstreamer-devel-bounces+restlessmindsstudio=gmail.com@lists.freedesktop.org">gstreamer-devel-bounces+restlessmindsstudio=gmail.com@lists.freedesktop.org</a> [<a href="mailto:gstreamer-devel-bounces+restlessmindsstudio=gmail.com@lists.freedesktop.org">mailto:gstreamer-devel-bounces+restlessmindsstudio=gmail.com@lists.freedesktop.org</a>] On Behalf Of Bernhard Graaf Sent: Tuesday, February 19, 2013 11:38 PM To: 'Discussion of the development of and with GStreamer' Subject: AW: Properly freeing resources<o:p></o:p></div></div><o:p> </o:p>I’ve found a small mismatch:<o:p></o:p>The ‘gst_object_unref(streamData->bus)’ should be called after init the signal bus, not before sending a new video.<o:p></o:p><o:p> </o:p>Hope that helps<o:p></o:p>Bernhard<o:p></o:p><o:p> </o:p><div><div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in'>Von: <a href="mailto:gstreamer-devel-bounces+bernhard.graaf=gmx.de@lists.freedesktop.org">gstreamer-devel-bounces+bernhard.graaf=gmx.de@lists.freedesktop.org</a> [<a href="mailto:gstreamer-devel-bounces+bernhard.graaf=gmx.de@lists.freedesktop.org">mailto:gstreamer-devel-bounces+bernhard.graaf=gmx.de@lists.freedesktop.org</a>] Im Auftrag von Jim Gesendet: Dienstag, 19. Februar 2013 19:03 An: <a href="mailto:gstreamer-devel@lists.freedesktop.org">gstreamer-devel@lists.freedesktop.org</a> Betreff: Properly freeing resources<o:p></o:p></div></div><o:p> </o:p>Hi Everyone,<o:p></o:p>I’ve been watching the memory usage of my C application that’s using Gstreamer 0.10.36 and notice the allocated memory (according to the top command) keeps increasing slowly over time. This is only happening while Gstreamer is playing a video. When the application is idle, not using Gstreamer, the memory usage does not increase. I’m wondering if I’m doing something wrong with how I’m using the Gstreamer library.<o:p></o:p><o:p> </o:p>The application is basically a media player that provides the user with a list of videos to play. At any time the user can switch to a different video. Every time it starts playing another video, it goes through the following initialization:<o:p></o:p><o:p> </o:p> // Create the pipeline and its elements<o:p></o:p> streamData->pipeline = gst_pipeline_new("my-pipeline");<o:p></o:p> streamData->fileSrc = gst_element_factory_make("filesrc", "fileSrc");<o:p></o:p> streamData->demux = gst_element_factory_make("tsdemux", "demux");<o:p></o:p> streamData->videoQueue = gst_element_factory_make("queue", "videoQueue");<o:p></o:p> streamData->audioQueue = gst_element_factory_make("queue", "audioQueue");<o:p></o:p> streamData->videoDecoder = gst_element_factory_make("vpudec", "videoDecoder");<o:p></o:p> streamData->videoSink = gst_element_factory_make("mfw_v4lsink", "videoSink");<o:p></o:p> streamData->audioDecoder = gst_element_factory_make("mfw_mp3decoder", "audioDecoder");<o:p></o:p> streamData->volumeFilter = gst_element_factory_make("volume", "volume");<o:p></o:p> streamData->audioSink = gst_element_factory_make("alsasink", "audioSink");<o:p></o:p><o:p> </o:p> if (!streamData->pipeline || !streamData->fileSrc || !streamData->demux || !streamData->videoQueue ||<o:p></o:p> !streamData->audioQueue || !streamData->videoDecoder || !streamData->videoSink ||<o:p></o:p> !streamData->audioDecoder || !streamData->volumeFilter || !streamData->audioSink)<o:p></o:p> {<o:p></o:p> g_printerr("Not all elements could be created.\n");<o:p></o:p> return;<o:p></o:p> }<o:p></o:p><o:p> </o:p> gst_bin_add_many(GST_BIN(streamData->pipeline), streamData->fileSrc, streamData->demux, streamData->videoQueue,<o:p></o:p> streamData->audioQueue, streamData->videoDecoder, streamData->videoSink, streamData->audioDecoder,<o:p></o:p> streamData->volumeFilter, streamData->audioSink, NULL);<o:p></o:p> if (!gst_element_link(streamData->fileSrc, streamData->demux))<o:p></o:p> {<o:p></o:p> g_printerr("Elements could not be linked\n");<o:p></o:p> gst_object_unref(streamData->pipeline);<o:p></o:p> return;<o:p></o:p> }<o:p></o:p><o:p> </o:p> if (!gst_element_link_many(streamData->videoQueue, streamData->videoDecoder, streamData->videoSink, NULL))<o:p></o:p> {<o:p></o:p> g_printerr("Elements could not be linked\n");<o:p></o:p> gst_object_unref(streamData->pipeline);<o:p></o:p> return;<o:p></o:p> }<o:p></o:p><o:p> </o:p> if (!gst_element_link_many(streamData->audioQueue, streamData->audioDecoder, streamData->volumeFilter, streamData->audioSink, NULL))<o:p></o:p> {<o:p></o:p> g_printerr("Elements could not be linked\n");<o:p></o:p> gst_object_unref(streamData->pipeline);<o:p></o:p> return;<o:p></o:p> }<o:p></o:p><o:p> </o:p> g_object_set(G_OBJECT(streamData->videoQueue), "max-size-buffers", 0, NULL);<o:p></o:p> g_object_set(G_OBJECT(streamData->videoQueue), "max-size-time", 0, NULL);<o:p></o:p> g_object_set(G_OBJECT(streamData->audioQueue), "max-size-buffers", 0, NULL);<o:p></o:p> g_object_set(G_OBJECT(streamData->audioQueue), "max-size-time", 0, NULL);<o:p></o:p><o:p> </o:p> g_signal_connect(streamData->demux, "pad-added", G_CALLBACK(pad_added_handler), streamData);<o:p></o:p><o:p> </o:p> // Retrieve pipeline signal bus<o:p></o:p> streamData->bus = gst_pipeline_get_bus(GST_PIPELINE(streamData->pipeline));<o:p></o:p> streamData->busWatchId = gst_bus_add_watch(streamData->bus, (GstBusFunc)handle_message, streamData);<o:p></o:p><o:p> </o:p><o:p> </o:p>Before switching to a another video, the following cleanup is done:<o:p></o:p><o:p> </o:p> gst_object_unref(streamData->bus);<o:p></o:p> gst_element_set_state(streamData->pipeline, GST_STATE_NULL);<o:p></o:p> gst_object_unref(streamData->pipeline);<o:p></o:p><o:p> </o:p>Is this all the cleanup I need to do before creating a new pipeline or is there something else?<o:p></o:p><o:p> </o:p>Thanks,<o:p></o:p>Jim<o:p></o:p></div></body></html>