Ejemplos de gst_structure_id_empty_new en C++ (Cpp)

Ejemplo n.º 1

/**
 * gst_query_new_formats:
 *
 * Constructs a new query object for querying formats of
 * the stream.
 *
 * Returns: A #GstQuery
 *
 * Since: 0.10.4
 */
GstQuery *
gst_query_new_formats (void)
{
  GstQuery *query;
  GstStructure *structure;

  structure = gst_structure_id_empty_new (GST_QUARK (QUERY_FORMATS));
  query = gst_query_new (GST_QUERY_FORMATS, structure);

  return query;
}

Ejemplo n.º 2

Archivo: gstbasevideoencoder.c Proyecto: madmac2501/gst-srtp

static GstCaps *
gst_base_video_encoder_sink_getcaps (GstPad * pad)
{
  GstBaseVideoEncoder *base_video_encoder;
  const GstCaps *templ_caps;
  GstCaps *allowed;
  GstCaps *fcaps, *filter_caps;
  gint i, j;

  base_video_encoder = GST_BASE_VIDEO_ENCODER (gst_pad_get_parent (pad));

  /* FIXME: Allow subclass to override this? */

  /* Allow downstream to specify width/height/framerate/PAR constraints
   * and forward them upstream for video converters to handle
   */
  templ_caps =
      gst_pad_get_pad_template_caps (GST_BASE_VIDEO_CODEC_SINK_PAD
      (base_video_encoder));
  allowed =
      gst_pad_get_allowed_caps (GST_BASE_VIDEO_CODEC_SRC_PAD
      (base_video_encoder));
  if (!allowed || gst_caps_is_empty (allowed) || gst_caps_is_any (allowed)) {
    fcaps = gst_caps_copy (templ_caps);
    goto done;
  }

  GST_LOG_OBJECT (base_video_encoder, "template caps %" GST_PTR_FORMAT,
      templ_caps);
  GST_LOG_OBJECT (base_video_encoder, "allowed caps %" GST_PTR_FORMAT, allowed);

  filter_caps = gst_caps_new_empty ();

  for (i = 0; i < gst_caps_get_size (templ_caps); i++) {
    GQuark q_name =
        gst_structure_get_name_id (gst_caps_get_structure (templ_caps, i));

    for (j = 0; j < gst_caps_get_size (allowed); j++) {
      const GstStructure *allowed_s = gst_caps_get_structure (allowed, j);
      const GValue *val;
      GstStructure *s;

      s = gst_structure_id_empty_new (q_name);
      if ((val = gst_structure_get_value (allowed_s, "width")))
        gst_structure_set_value (s, "width", val);
      if ((val = gst_structure_get_value (allowed_s, "height")))
        gst_structure_set_value (s, "height", val);
      if ((val = gst_structure_get_value (allowed_s, "framerate")))
        gst_structure_set_value (s, "framerate", val);
      if ((val = gst_structure_get_value (allowed_s, "pixel-aspect-ratio")))
        gst_structure_set_value (s, "pixel-aspect-ratio", val);

      gst_caps_merge_structure (filter_caps, s);
    }
  }

  fcaps = gst_caps_intersect (filter_caps, templ_caps);
  gst_caps_unref (filter_caps);

done:

  gst_caps_replace (&allowed, NULL);

  GST_LOG_OBJECT (base_video_encoder, "Returning caps %" GST_PTR_FORMAT, fcaps);

  return fcaps;
}