C++ (Cpp) gst_structure_remove_all_fieldsの例

コード例 #1

ファイル: gstcapssetter.c プロジェクト: bilboed/gst-plugins-bad

static GstCaps *
gst_caps_setter_transform_caps (GstBaseTransform * trans,
    GstPadDirection direction, GstCaps * caps)
{
  GstCapsSetter *filter;
  GstCaps *ret, *filter_caps;
  GstStructure *structure, *merge;
  const gchar *name;
  gint i, j;

  filter = GST_CAPS_SETTER (trans);

  GST_DEBUG_OBJECT (trans, "receiving caps: %" GST_PTR_FORMAT, caps);

  ret = gst_caps_copy (caps);

  /* this function is always called with a simple caps */
  if (!GST_CAPS_IS_SIMPLE (ret) || direction != GST_PAD_SINK)
    return ret;

  structure = gst_caps_get_structure (ret, 0);
  name = gst_structure_get_name (structure);

  GST_OBJECT_LOCK (filter);
  filter_caps = gst_caps_ref (filter->caps);
  GST_OBJECT_UNLOCK (filter);

  for (i = 0; i < gst_caps_get_size (filter_caps); ++i) {
    merge = gst_caps_get_structure (filter_caps, i);
    if (gst_structure_has_name (merge, name) || !filter->join) {

      if (!filter->join)
        gst_structure_set_name (structure, gst_structure_get_name (merge));

      if (filter->replace)
        gst_structure_remove_all_fields (structure);

      for (j = 0; j < gst_structure_n_fields (merge); ++j) {
        const gchar *fname;

        fname = gst_structure_nth_field_name (merge, j);
        gst_structure_set_value (structure, fname,
            gst_structure_get_value (merge, fname));
      }
    }
  }

  GST_DEBUG_OBJECT (trans, "returning caps: %" GST_PTR_FORMAT, ret);

  gst_caps_unref (filter_caps);

  return ret;
}

コード例 #2

EXPORT_C
#endif

void
gst_tag_list_insert (GstTagList * into, const GstTagList * from,
    GstTagMergeMode mode)
{
  GstTagCopyData data;

  g_return_if_fail (GST_IS_TAG_LIST (into));
  g_return_if_fail (GST_IS_TAG_LIST (from));
  g_return_if_fail (GST_TAG_MODE_IS_VALID (mode));

  data.list = (GstStructure *) into;
  data.mode = mode;
  if (mode == GST_TAG_MERGE_REPLACE_ALL) {
    gst_structure_remove_all_fields (data.list);
  }
  gst_structure_foreach ((GstStructure *) from, gst_tag_list_copy_foreach,
      &data);
}