C++ (Cpp) GST_VTDEC_CLASS_GET_CODEC_DETAILS Examples

Example #1

File: vtdec.c Project: cbetz421/gst-plugins-bad

static void
gst_vtdec_base_init (GstVTDecClass * klass)
{
  const GstVTDecoderDetails *codec_details =
      GST_VTDEC_CLASS_GET_CODEC_DETAILS (klass);
  GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
  const int min_width = 1, max_width = G_MAXINT;
  const int min_height = 1, max_height = G_MAXINT;
  const int min_fps_n = 0, max_fps_n = G_MAXINT;
  const int min_fps_d = 1, max_fps_d = 1;
  GstPadTemplate *sink_template, *src_template;
  GstCaps *sink_caps;
  gchar *longname, *description;

  longname = g_strdup_printf ("%s decoder", codec_details->name);
  description = g_strdup_printf ("%s decoder", codec_details->name);

  gst_element_class_set_metadata (element_class, longname,
      "Codec/Decoder/Video", description,
      "Ole André Vadla Ravnås <*****@*****.**>");

  g_free (longname);
  g_free (description);

  sink_caps = gst_caps_new_simple (codec_details->mimetype,
      "width", GST_TYPE_INT_RANGE, min_width, max_width,
      "height", GST_TYPE_INT_RANGE, min_height, max_height,
      "framerate", GST_TYPE_FRACTION_RANGE,
      min_fps_n, min_fps_d, max_fps_n, max_fps_d, NULL);
  if (codec_details->format_id == kVTFormatH264) {
    gst_structure_set (gst_caps_get_structure (sink_caps, 0),
        "stream-format", G_TYPE_STRING, "avc", NULL);
  } else if (codec_details->format_id == kVTFormatMPEG2) {
    gst_structure_set (gst_caps_get_structure (sink_caps, 0),
        "mpegversion", GST_TYPE_INT_RANGE, 1, 2,
        "systemstream", G_TYPE_BOOLEAN, FALSE, NULL);
  }
  sink_template = gst_pad_template_new ("sink", GST_PAD_SINK, GST_PAD_ALWAYS,
      sink_caps);
  gst_element_class_add_pad_template (element_class, sink_template);

  src_template = gst_pad_template_new ("src",
      GST_PAD_SRC,
      GST_PAD_ALWAYS,
      gst_caps_new_simple ("video/x-raw",
          "format", G_TYPE_STRING, GST_VTDEC_VIDEO_FORMAT_STR,
          "width", GST_TYPE_INT_RANGE, min_width, max_width,
          "height", GST_TYPE_INT_RANGE, min_height, max_height,
          "framerate", GST_TYPE_FRACTION_RANGE,
          min_fps_n, min_fps_d, max_fps_n, max_fps_d, NULL));
  gst_element_class_add_pad_template (element_class, src_template);
}

Example #2

File: vtdec.c Project: lubing521/gst-embedded-builder

static void
gst_vtdec_init (GstVTDec * self)
{
  GstVTDecClass *klass = (GstVTDecClass *) G_OBJECT_GET_CLASS (self);
  GstElementClass *element_klass = GST_ELEMENT_CLASS (klass);
  GstElement *element = GST_ELEMENT (self);

  self->details = GST_VTDEC_CLASS_GET_CODEC_DETAILS (klass);

  self->sinkpad = gst_pad_new_from_template
      (gst_element_class_get_pad_template (element_klass, "sink"), "sink");
  gst_element_add_pad (element, self->sinkpad);
  gst_pad_set_event_function (self->sinkpad, gst_vtdec_sink_event);
  gst_pad_set_chain_function (self->sinkpad, gst_vtdec_chain);

  self->srcpad = gst_pad_new_from_template
      (gst_element_class_get_pad_template (element_klass, "src"), "src");
  gst_element_add_pad (element, self->srcpad);
}