Hi Thiago, Yes, I did notice this problem and I have corrected the same. Presently, I am creating two different pipelines (with different elements) in it. I try to pause stream1 and this works. But I cannot play the second stream for some reason. I have attached the code along with this email. Actually, this time around, on pausing the first stream and playing the second stream I get an error like "Cannot play stream 16", and this I see, comes from Freescale codec plugin. Any clue as to why this is happening ? regards Rajesh Marathe. On 10/22/2009 05:52 PM, thiagossantos at gmail.com wrote: > > > On Tue, Oct 20, 2009 at 9:21 AM, Rajesh Marathe <rmarathe at i-rode.com > <mailto:rmarathe at i-rode.com>> wrote: > > Hi, > > I am new to gstreamer and started working on it very recently. While I > am studying, I wrote a program to play two streams alternately using > gstreamer. Details below: > > Development environment: > ------------------------------------- > > LTIB and iMX27ADS board. Host PC has Redhat EL5.0. > > Problem description: > ----------------------------- > > I have two MP4 files. My intention is to play the first file for a few > seconds and pause the same and play the second file fully. After > getting > End-of-Steam message for second file, resume and complete the first > file. My program looks like this: > > int > main (int argc, > char *argv[]) > { > GMainLoop *loop; > GstStateChangeReturn retval; > > > /* Initialisation */ > gst_init (&argc, &argv); > > loop = g_main_loop_new (NULL, FALSE); > > /* Create gstreamer elements */ > masterpipe = GstCreatePipelineMaster ("master-player", argv[1]); > slavepipe = GstCreatePipelineSlave ("slave-player", argv[2]); > > retval = gst_element_set_state (slavepipe, GST_STATE_PAUSED); > > retval = gst_element_set_state (masterpipe, GST_STATE_PLAYING); > > g_timeout_add (4000, (GSourceFunc) cb_print_position, masterpipe); > g_main_loop_run (loop); > ... > ... > } > > static GstElement * GstCreatePipelineMaster (char *name, char *file) > { > > GstElement *pipeline; > > /* Create gstreamer elements */ > pipeline = gst_pipeline_new (name); > source = gst_element_factory_make ("filesrc","file-source"); > demuxer = gst_element_factory_make > ("mfw_mp4demuxer","avi-demuxer"); > decvd = gst_element_factory_make ("mfw_vpudecoder", > "video-decoder"); > decad = gst_element_factory_make ("mad", "mp3-decoder"); > vdsink = gst_element_factory_make ("mfw_v4lsink", > "video-sink"); > vdqueue = gst_element_factory_make ("queue", > "video-queue"); > adqueue = gst_element_factory_make ("queue", > "audio-queue"); > adsink = gst_element_factory_make ("fakesink", > "audio-sink"); > > g_object_set (decvd, "codec-type", "std_mpeg4", NULL); > if (!pipeline || !source || !demuxer || !decvd || !decad || !vdsink > || !vdqueue || !adqueue || !adsink) { > return NULL; > } > > /* Set up the pipeline */ > > /* we set the input filename to the source element */ > g_object_set (G_OBJECT (source), "location", file, NULL); > > > /* we add all elements into the pipeline */ > /* file-source | ogg-demuxer | vorbis-decoder | converter | > alsa-output */ > gst_bin_add_many (GST_BIN (pipeline), > source, demuxer, decvd, decad,/* adqueue, > vdqueue,*/ vdsink, adsink, NULL); > > /* we link the elements together */ > /* file-source -> ogg-demuxer ~> vorbis-decoder -> converter -> > alsa-output */ > gst_element_link (source, demuxer); > gst_element_link (decvd, vdsink); > // gst_element_link (vdqueue, vdsink); > // gst_element_link (decad, adqueue); > // gst_element_link (adqueue, adsink); > gst_element_link (decad, adsink); > > g_signal_connect (demuxer, "pad-added", G_CALLBACK > (on_pad_added), NULL); > > return pipeline; > } > > static GstElement * GstCreatePipelineSlave (char *name, char *file) > { > > GstElement *pipeline; > > /* Create gstreamer elements */ > pipeline = gst_pipeline_new (name); > > /* Set up the pipeline */ > > /* we set the input filename to the source element */ > g_object_set (G_OBJECT (source), "location", file, NULL); > > > /* we add all elements into the pipeline */ > /* file-source | ogg-demuxer | vorbis-decoder | converter | > alsa-output */ > gst_bin_add_many (GST_BIN (pipeline), > source, demuxer, decvd, decad,/* adqueue, > vdqueue,*/ vdsink, adsink, NULL); > > return pipeline; > > } > > > Please note above, that I am creating two pipelines Master and > slave and > adding same elements to the master adn slave 'bin's. Is this okay > to do ? > > The elements can only have a single parent bin, it can't be inside two > bins at the same time. > You would probably notice the problem by checking the result of > gst_bin_add* > > > I do see the master playing and after few seconds the timer > function is > called in which I move the master to 'PAUSE' state and slave to > 'PLAYING'. But the slave media does not play at all?? > > Can anybody let me know what is wrong above ? > > regards, > Rajesh Marathe. > > ------------------------------------------------------------------------------ > Come build with us! The BlackBerry(R) Developer Conference in SF, CA > is the only developer event you need to attend this year. > Jumpstart your > developing skills, take BlackBerry mobile applications to market > and stay > ahead of the curve. Join us from November 9 - 12, 2009. Register now! > http://p.sf.net/sfu/devconference > _______________________________________________ > Gstreamer-embedded mailing list > Gstreamer-embedded at lists.sourceforge.net > <mailto:Gstreamer-embedded at lists.sourceforge.net> > https://lists.sourceforge.net/lists/listinfo/gstreamer-embedded > > > > > -- > Thiago Sousa Santos -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.freedesktop.org/archives/gstreamer-embedded/attachments/20091023/24d1ee34/attachment.htm> -------------- next part -------------- A non-text attachment was scrubbed... Name: playmultiplethreads.c Type: text/x-csrc Size: 12758 bytes Desc: not available URL: <http://lists.freedesktop.org/archives/gstreamer-embedded/attachments/20091023/24d1ee34/attachment.c>
