GstRTSPSrc dynamic pad iteration problem

[Orkun]

Thank you Sebastion,

I've changed the pad added callback as you said;

static GstPad *oldSrcRTSPSRC = NULL;
static void rtspsrc_pad_added_callback(GstElement* e, GstPad *pad, gpointer
data)
{
    gchar *name;
    GstCaps *caps;
    gchar *desc;
    GstElement *depayloader;
    GstPad *sinkDepayloader;

    name = gst_pad_get_name(pad);
    g_print("New pad %s was created", name);

    caps = gst_pad_get_pad_template_caps(pad);
    desc = gst_caps_to_string(caps);
    g_print("\n%s\n", desc);
    g_free(desc);

    depayloader = GST_ELEMENT(data);
    sinkDepayloader = gst_element_get_static_pad(depayloader, "sink");
    if (gst_pad_is_linked(sinkDepayloader))
    {
        if (gst_pad_unlink(oldSrcRtspsrc, sinkDepayloader) == FALSE)
        {
            g_print("'rtph264depay' sink pad's old link can't be
removed\n");
        }
        else
            g_print("'rpth264depay' sink pad's old link removed\n");
    }
    else
    {
        g_print("'rtph264depay' sink pad is linking for the first time\n");
    }

    if (gst_element_link_pads(e, name, depayloader, "sink") == FALSE)
    {
        g_print("'rtspsrc' and 'rtph264depay' did not linked\nProgram
ending...\n");
        exit(0);
    }
    else
    {
        oldSrcRTSPSRC = pad;
        g_print("'rtspsrc' and 'rtph264depay' linked\n");
    }
}

but it's still same its ouput;

New pad 'pad name' was created

application/x-rtp; application/x-rdt

'rpth264depay' sink pad's old link removed

'rtspsrc' and 'rtph264depay' did not linked
Program ending...

I'm new in GStreamer and I don't know how can I enable debug ingormation
without command line. I'm going to search for it. Thanks again

Orkun

2015-12-26 12:29 GMT+02:00 Sebastian Dröge-3 [via GStreamer-devel] <
ml-node+s966125n4675040h0 at n4.nabble.com>:

> On Do, 2015-12-24 at 06:55 -0800, Orkun wrote:
>
> > Hello,
> >
> > I'm trying to get ip cam streams and saving png images in some period
> > and I'm also doing it on command line with "gst-launch1.0 rtspsrc
> > location=usr:pw@<ip>/cam/realmonitor... ! rtph264depay ! h264parse !
> > omxh264dec ! videorate ! video/x-raw,framerate=1/1 ! pngenc !
> > multifilesink
> > location=/home/pi/im_%03d.png". I'm also created all elements and
> > pipeline and linked them with a for loop without rtspsrc-
> > >rtph264depay and videorate -> filter -> pngenc and before that for
> > loop linked rtspsrc to rtph264depay with a callback as what ADM 1.6.2
> > page 30 subject 8.1.1 says. The link was created for first time but
> > then it's not linking.
> > [...]
> >     if (gst_element_link_pads(e, name, depayloader, "sink") == FALSE)
> >     {
> >         g_print("'rtspsrc' and 'rtph264depay' did not linked\nProgram
> > ending...\n");
> If I understand you correctly, this is what fails? But what happens
> here according to your logs seems to be that multiple srcpads are added
> on the rtspsrc but you link them always to the same rtph264depay. That
> can't work, you can only link a pad once and need to unlink it first
> otherwise.
>
> From the GStreamer debug logs you should first of all check why rtspsrc
> is adding multiple srcpads, it seems like this is already unexpected in
> your case. And once that is known we can try to find a solution for
> that.
>
> --
> Sebastian Dröge, Centricular Ltd · http://www.centricular.com
>
>
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