C++ (Cpp) gst_mxf_mux_create_pad_name示例

示例#1

文件： mxfmux.c 项目： ChinnaSuhas/ossbuild

static GstPad *
gst_mxf_mux_request_new_pad (GstElement * element,
    GstPadTemplate * templ, const gchar * pad_name)
{
  GstMXFMux *mux = GST_MXF_MUX (element);
  GstMXFMuxPad *cpad;
  GstPad *pad = NULL;
  guint pad_number;
  gchar *name = NULL;
  const MXFEssenceElementWriter *writer;

  if (mux->state != GST_MXF_MUX_STATE_HEADER) {
    GST_WARNING_OBJECT (mux, "Can't request pads after writing header");
    return NULL;
  }

  writer = mxf_essence_element_writer_find (templ);
  if (!writer) {
    GST_ERROR_OBJECT (mux, "Not our template");
    return NULL;
  }

  pad_number = g_atomic_int_exchange_and_add ((gint *) & mux->n_pads, 1);
  name = gst_mxf_mux_create_pad_name (templ, pad_number);

  GST_DEBUG_OBJECT (mux, "Creating pad '%s'", name);
  pad = gst_pad_new_from_template (templ, name);
  g_free (name);
  cpad = (GstMXFMuxPad *)
      gst_collect_pads_add_pad (mux->collect, pad, sizeof (GstMXFMuxPad));
  cpad->last_timestamp = 0;
  cpad->adapter = gst_adapter_new ();
  cpad->writer = writer;

  /* FIXME: hacked way to override/extend the event function of
   * GstCollectPads; because it sets its own event function giving the
   * element no access to events.
   */
  mux->collect_event = (GstPadEventFunction) GST_PAD_EVENTFUNC (pad);
  gst_pad_set_event_function (pad,
      GST_DEBUG_FUNCPTR (gst_mxf_mux_handle_sink_event));

  gst_pad_set_setcaps_function (pad, gst_mxf_mux_setcaps);
  gst_pad_use_fixed_caps (pad);
  gst_pad_set_active (pad, TRUE);
  gst_element_add_pad (element, pad);

  return pad;
}

示例#2

文件： mxfmux.c 项目： asdlei00/gst-plugins-bad

static GstPad *
gst_mxf_mux_request_new_pad (GstElement * element,
    GstPadTemplate * templ, const gchar * pad_name, const GstCaps * caps)
{
  GstMXFMux *mux = GST_MXF_MUX (element);
  GstMXFMuxPad *cpad;
  GstPad *pad = NULL;
  guint pad_number;
  gchar *name = NULL;
  const MXFEssenceElementWriter *writer;

  if (mux->state != GST_MXF_MUX_STATE_HEADER) {
    GST_WARNING_OBJECT (mux, "Can't request pads after writing header");
    return NULL;
  }

  writer = mxf_essence_element_writer_find (templ);
  if (!writer) {
    GST_ERROR_OBJECT (mux, "Not our template");
    return NULL;
  }
  pad_number = g_atomic_int_add ((gint *) & mux->n_pads, 1);
  name = gst_mxf_mux_create_pad_name (templ, pad_number);

  GST_DEBUG_OBJECT (mux, "Creating pad '%s'", name);
  pad = gst_pad_new_from_template (templ, name);
  g_free (name);
  cpad = (GstMXFMuxPad *)
      gst_collect_pads_add_pad (mux->collect, pad, sizeof (GstMXFMuxPad), NULL,
      TRUE);
  cpad->last_timestamp = 0;
  cpad->adapter = gst_adapter_new ();
  cpad->writer = writer;

  gst_pad_use_fixed_caps (pad);
  gst_pad_set_active (pad, TRUE);
  gst_element_add_pad (element, pad);

  return pad;
}

示例#3

文件： mxfmux.c 项目： ndufresne/gst-plugins-bad

static GstAggregatorPad *
gst_mxf_mux_create_new_pad (GstAggregator * aggregator,
    GstPadTemplate * templ, const gchar * pad_name, const GstCaps * caps)
{
  GstMXFMux *mux = GST_MXF_MUX (aggregator);
  GstMXFMuxPad *pad;
  guint pad_number;
  gchar *name = NULL;
  const MXFEssenceElementWriter *writer;

  if (mux->state != GST_MXF_MUX_STATE_HEADER) {
    GST_WARNING_OBJECT (mux, "Can't request pads after writing header");
    return NULL;
  }

  writer = mxf_essence_element_writer_find (templ);
  if (!writer) {
    GST_ERROR_OBJECT (mux, "Not our template");
    return NULL;
  }
  pad_number = g_atomic_int_add ((gint *) & mux->n_pads, 1);
  name = gst_mxf_mux_create_pad_name (templ, pad_number);

  GST_DEBUG_OBJECT (mux, "Creating pad '%s'", name);
  pad =
      g_object_new (GST_TYPE_MXF_MUX_PAD, "name", name, "direction",
      GST_PAD_SINK, "template", templ, NULL);
  g_free (name);
  pad->last_timestamp = 0;
  pad->adapter = gst_adapter_new ();
  pad->writer = writer;

  gst_pad_use_fixed_caps (GST_PAD_CAST (pad));

  return GST_AGGREGATOR_PAD (pad);
}