My application with appsrc eats whole memory (is it a memory leak) ?

[Edward Hervey]

Hi,

  Are you releasing the buffers (and content) you are passing to appsrc
? That's most likely the culprit.

  Make sure the buffers you provide to appsrc have a destroynotify (see
the documentation for gst_buffer_new_wrapped_full()).

   Edward

On Mon, 2017-12-18 at 11:23 +0300, Denis Shienkov wrote:
> Hi all,
> 
> I faced with a problem, that my application eats whole
> memory when I start it with this pipeline (without using
> of a videoenc element in pipeline):
> 
> void Grabber::initializeGst()
> {
>      ::gst_init(nullptr, nullptr);
> 
>      m_appsrc = ::gst_element_factory_make(
>                  "appsrc", "source");
> 
>      ::g_object_set(G_OBJECT(m_appsrc),
>                     "stream-type", GST_APP_STREAM_TYPE_STREAM,
>                     "is-live", true,
>                     "format", GST_FORMAT_TIME,
>                     nullptr);
> 
>      const auto caps = ::gst_caps_new_simple(
>                  "video/x-raw",
>                  "format", G_TYPE_STRING, "BGRA",
>                  "width", G_TYPE_INT, 800,
>                  "height", G_TYPE_INT, 600,
>                  "framerate", GST_TYPE_FRACTION, 0, 1,
>                  nullptr);
> 
>      ::g_object_set(G_OBJECT(m_appsrc),
>                     "caps", caps,
>                     nullptr);
> 
>       const auto conv = ::gst_element_factory_make(
>                  "videoconvert", "conv");
> 
>      const auto videoenc = ::gst_element_factory_make(
>                  "x264enc", "video_encoder");
> 
>      const auto payloader = ::gst_element_factory_make(
>                  "rtph264pay", "payloader");
> 
>      ::g_object_set(G_OBJECT(payloader),
>                     "config-interval", 3,
>                     nullptr);
> 
>      m_pipeline = ::gst_pipeline_new("pipeline");
> 
>      const auto udpsink = ::gst_element_factory_make(
>                  "udpsink", "udpsink");
> 
>      ::g_object_set(G_OBJECT(udpsink),
>                     "host", "127.0.0.1",
>                     "port", 50666,
>                     nullptr);
> 
>      ::gst_bin_add_many(GST_BIN(m_pipeline),
>                         m_appsrc,
> //                       conv,
>                         videoenc,
>                         payloader,
>                         udpsink,
>                         nullptr);
> 
>      const auto result = ::gst_element_link_many(m_appsrc,
> //                                                conv,
>                                                  videoenc,
>                                                  payloader,
>                                                  udpsink,
>                                                  nullptr);
> 
>      if (!result) {
>          qDebug() << "Unable to initialize the GST";
>      } else {
>          // Play.
>          const auto status = ::gst_element_set_state(m_pipeline, 
> GST_STATE_PLAYING);
>          qDebug() << "Status:" << status;
>      }
> }
> 
> I use the gst_app_src_push_buffer() function directly when
> I get a ready buffer from the some external entity.
> 
> I have tried it on Windows and on Linux, and the behavior is same:
> the CPU load ~10%, but the RAM consumption increases very quickly,
> and after ~10 seconds it eatch all memory.
> 
> But, when I insert the 'videoconvert' element, then the RAM
> consumption
> stabilized on ~300 MBytes, and the CPU consumption increases up to
> ~80%.
> 
> In ideally, I do not need to use an 'videoconvert' elament, because
> I want to send it in an original format as BGRA.
> 
> What I doing wrong?
> 
> BR,
> Denis
> 
> 
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