How to use playbin with udpsrc element?

[Denis Shienkov]

Hi all.

Currently, I receive an external video x264 stream, using the following pipeline:

    ...
    const auto udpsrc = ::gst_element_factory_make("udpsrc", nullptr);
    const auto depay = ::gst_element_factory_make("rtph264depay", nullptr);

    const auto decodebin = ::gst_element_factory_make("decodebin", nullptr);

    const auto videoconvert = ::gst_element_factory_make("videoconvert", nullptr);

    const auto videofilter = ::gst_element_factory_make("capsfilter", nullptr);

    m_videosink = m_renderer->videoSink(); // my own video sink

    m_pipeline = ::gst_pipeline_new("pipeline");

    ...

    ::gst_bin_add_many(GST_BIN(m_pipeline),
                       udpsrc,
                       depay,
                       decodebin,
                       videoconvert,
                       videofilter,
                       m_videosink,
                       nullptr);

    ...

    ::gst_element_link_many(udpsrc, depay, decodebin, nullptr);
    ::gst_element_link_many(videoconvert, videofilter, m_videosink, nullptr);

    ...

    const auto status = ::gst_element_set_state(m_pipeline, GST_STATE_PLAYING);

    ...

but a problem is that this code is too big.

I have read (as I understand), that we need to use the 'bin' elements, which

automatically loads the appropriate HW codecs, in my case it is the 'decodebin'.

So, my questions is:

* Is it possible to use the 'playbin' with 'udpsrc' element, instead set of a lot of
''rtph264depay", "decodebin", "videoconvert"  and so on? If YES - then point me
please on the some examples and tutorials..

* How I can know programmatically, what of decoders where loaded by the 'bin'

element? Is there are any callbacks? Is it possible to control a process of loading?

BR,

Denis

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