Ejemplos de gst_query_parse_scheduling en C++ (Cpp)

Ejemplo n.º 1

Archivo: gstneonhttpsrc.c Proyecto: GrokImageCompression/gst-plugins-bad

static gboolean
gst_neonhttp_src_query (GstBaseSrc * bsrc, GstQuery * query)
{
    GstNeonhttpSrc *src = GST_NEONHTTP_SRC (bsrc);
    gboolean ret;

    switch (GST_QUERY_TYPE (query)) {
    case GST_QUERY_URI:
        gst_query_set_uri (query, src->location);
        ret = TRUE;
        break;
    default:
        ret = FALSE;
        break;
    }

    if (!ret)
        ret = GST_BASE_SRC_CLASS (parent_class)->query (bsrc, query);

    switch (GST_QUERY_TYPE (query)) {
    case GST_QUERY_SCHEDULING: {
        GstSchedulingFlags flags;
        gint minsize, maxsize, align;

        gst_query_parse_scheduling (query, &flags, &minsize, &maxsize, &align);
        flags |= GST_SCHEDULING_FLAG_BANDWIDTH_LIMITED;
        gst_query_set_scheduling (query, flags, minsize, maxsize, align);
        break;
    }
    default:
        break;
    }

    return ret;
}

Ejemplo n.º 2

Archivo: gsttypefindelement.c Proyecto: ConfusedReality/pkg_multimedia_gstreamer

static gboolean
gst_type_find_element_activate_sink (GstPad * pad, GstObject * parent)
{
  GstQuery *query;
  gboolean pull_mode;
  GstSchedulingFlags sched_flags;

  query = gst_query_new_scheduling ();

  if (!gst_pad_peer_query (pad, query)) {
    gst_query_unref (query);
    goto typefind_push;
  }

  gst_query_parse_scheduling (query, &sched_flags, NULL, NULL, NULL);

  pull_mode = gst_query_has_scheduling_mode (query, GST_PAD_MODE_PULL)
      && ((sched_flags & GST_SCHEDULING_FLAG_SEEKABLE) != 0);

  gst_query_unref (query);

  if (!pull_mode)
    goto typefind_push;

  if (!gst_pad_activate_mode (pad, GST_PAD_MODE_PULL, TRUE))
    goto typefind_push;

  /* only start our task if we ourselves decide to start in pull mode */
  return gst_pad_start_task (pad, (GstTaskFunction) gst_type_find_element_loop,
      pad, NULL);

typefind_push:
  {
    return gst_pad_activate_mode (pad, GST_PAD_MODE_PUSH, TRUE);
  }
}

Ejemplo n.º 3

Archivo: gsttypefindelement.c Proyecto: lubing521/gst-embedded-builder

static gboolean
gst_type_find_element_activate_sink (GstPad * pad, GstObject * parent)
{
  GstTypeFindElement *typefind;
  GstQuery *query;
  gboolean pull_mode;
  GstCaps *found_caps = NULL;
  GstTypeFindProbability probability = GST_TYPE_FIND_NONE;
  GstSchedulingFlags sched_flags;

  typefind = GST_TYPE_FIND_ELEMENT (parent);

  /* if we have force caps, use those */
  GST_OBJECT_LOCK (typefind);
  if (typefind->force_caps) {
    found_caps = gst_caps_ref (typefind->force_caps);
    probability = GST_TYPE_FIND_MAXIMUM;
    GST_OBJECT_UNLOCK (typefind);

    GST_DEBUG ("Emiting found caps %" GST_PTR_FORMAT, found_caps);
    g_signal_emit (typefind, gst_type_find_element_signals[HAVE_TYPE],
        0, probability, found_caps);
    typefind->mode = MODE_NORMAL;
    /* the signal above could have made a downstream element activate
     * the pad in pull mode, we check if the pad is already active now and if
     * so, we are done */
    if (gst_pad_is_active (pad))
      return TRUE;

    goto typefind_push;
  }
  GST_OBJECT_UNLOCK (typefind);

  query = gst_query_new_scheduling ();

  if (!gst_pad_peer_query (pad, query)) {
    gst_query_unref (query);
    goto typefind_push;
  }

  gst_query_parse_scheduling (query, &sched_flags, NULL, NULL, NULL);

  pull_mode = gst_query_has_scheduling_mode (query, GST_PAD_MODE_PULL)
      && ((sched_flags & GST_SCHEDULING_FLAG_SEEKABLE) != 0);

  gst_query_unref (query);

  if (!pull_mode)
    goto typefind_push;

  if (!gst_pad_activate_mode (pad, GST_PAD_MODE_PULL, TRUE))
    goto typefind_push;

  /* only start our task if we ourselves decide to start in pull mode */
  return gst_pad_start_task (pad, (GstTaskFunction) gst_type_find_element_loop,
      pad, NULL);

typefind_push:
  {
    return gst_pad_activate_mode (pad, GST_PAD_MODE_PUSH, TRUE);
  }
}