C++ (Cpp) kms_utils_create_convert_for_caps Examples

Example #1

File: kmsagnosticbin.c Project: shelsonjava/kms-core

static void
kms_agnostic_bin2_link_to_tee (KmsAgnosticBin2 * self, GstPad * pad,
    GstElement * tee, GstCaps * caps)
{
  GstElement *queue = gst_element_factory_make ("queue", NULL);
  GstPad *target;

  gst_bin_add (GST_BIN (self), queue);
  gst_element_sync_state_with_parent (queue);

  if (!gst_caps_is_any (caps) && is_raw_caps (caps)) {
    GstElement *convert = kms_utils_create_convert_for_caps (caps);
    GstElement *rate = kms_utils_create_rate_for_caps (caps);
    GstElement *mediator = kms_utils_create_mediator_element (caps);

    remove_element_on_unlinked (convert, "src", "sink");
    remove_element_on_unlinked (rate, "src", "sink");
    remove_element_on_unlinked (mediator, "src", "sink");

    gst_bin_add_many (GST_BIN (self), convert, rate, mediator, NULL);

    gst_element_sync_state_with_parent (mediator);
    gst_element_sync_state_with_parent (convert);
    gst_element_sync_state_with_parent (rate);

    gst_element_link_many (queue, rate, convert, mediator, NULL);
    target = gst_element_get_static_pad (mediator, "src");
  } else {
    target = gst_element_get_static_pad (queue, "src");
  }

  gst_ghost_pad_set_target (GST_GHOST_PAD (pad), target);
  g_object_unref (target);
  link_element_to_tee (tee, queue);
}

Example #2

File: kmsagnosticbin.c Project: ArenaCloud/kms-core

static void
kms_agnostic_bin2_link_to_tee (KmsAgnosticBin2 * self, GstPad * pad,
    GstElement * tee, GstCaps * caps)
{
  GstElement *queue = gst_element_factory_make ("queue", NULL);
  GstPad *target;
  GstProxyPad *proxy;

  gst_bin_add (GST_BIN (self), queue);
  gst_element_sync_state_with_parent (queue);

  if (!(gst_caps_is_any (caps) || gst_caps_is_empty (caps))
      && kms_utils_caps_are_raw (caps)) {
    GstElement *convert = kms_utils_create_convert_for_caps (caps);
    GstElement *rate = kms_utils_create_rate_for_caps (caps);
    GstElement *mediator = kms_utils_create_mediator_element (caps);

    remove_element_on_unlinked (convert, "src", "sink");
    if (rate) {
      remove_element_on_unlinked (rate, "src", "sink");
    }
    remove_element_on_unlinked (mediator, "src", "sink");

    if (rate) {
      gst_bin_add (GST_BIN (self), rate);
    }

    gst_bin_add_many (GST_BIN (self), convert, mediator, NULL);

    gst_element_sync_state_with_parent (mediator);
    gst_element_sync_state_with_parent (convert);
    if (rate) {
      gst_element_sync_state_with_parent (rate);
    }

    if (rate) {
      gst_element_link_many (queue, rate, mediator, NULL);
    } else {
      gst_element_link (queue, mediator);
    }

    gst_element_link_many (mediator, convert, NULL);
    target = gst_element_get_static_pad (convert, "src");
  } else {
    target = gst_element_get_static_pad (queue, "src");
  }

  gst_ghost_pad_set_target (GST_GHOST_PAD (pad), target);

  proxy = gst_proxy_pad_get_internal (GST_PROXY_PAD (pad));
  gst_pad_set_query_function (GST_PAD_CAST (proxy),
      proxy_src_pad_query_function);
  g_object_unref (proxy);

  g_object_unref (target);
  link_element_to_tee (tee, queue);
}

Example #3

File: kmsenctreebin.c Project: 2bees-rd/kms-core

static gboolean
kms_enc_tree_bin_configure (KmsEncTreeBin * self, const GstCaps * caps,
    gint target_bitrate)
{
  KmsTreeBin *tree_bin = KMS_TREE_BIN (self);
  GstElement *rate, *convert, *mediator, *output_tee, *capsfilter = NULL;

  self->priv->current_bitrate = target_bitrate;

  kms_enc_tree_bin_create_encoder_for_caps (self, caps, target_bitrate);

  if (self->priv->enc == NULL) {
    GST_WARNING_OBJECT (self, "Invalid encoder for caps: %" GST_PTR_FORMAT,
        caps);
    return FALSE;
  }

  GST_DEBUG_OBJECT (self, "Encoder found: %" GST_PTR_FORMAT, self->priv->enc);

  self->priv->enc_sink = gst_element_get_static_pad (self->priv->enc, "sink");
  self->priv->remb_manager =
      kms_utils_remb_event_manager_create (self->priv->enc_sink);
  kms_utils_remb_event_manager_set_callback (self->priv->remb_manager,
      bitrate_callback, self, NULL);
  gst_pad_add_probe (self->priv->enc_sink, GST_PAD_PROBE_TYPE_EVENT_DOWNSTREAM,
      tag_event_probe, self, NULL);

  rate = kms_utils_create_rate_for_caps (caps);
  convert = kms_utils_create_convert_for_caps (caps);
  mediator = kms_utils_create_mediator_element (caps);

  gst_bin_add_many (GST_BIN (self), rate, convert, mediator, self->priv->enc,
      NULL);
  gst_element_sync_state_with_parent (self->priv->enc);
  gst_element_sync_state_with_parent (mediator);
  gst_element_sync_state_with_parent (convert);
  gst_element_sync_state_with_parent (rate);
  // FIXME: This is a hack to avoid an error on x264enc that does not work
  // properly with some raw formats, this should be fixed in gstreamer
  // but until this is done this hack makes it work
  if (self->priv->enc_type == X264) {
    GstCaps *filter_caps = gst_caps_from_string ("video/x-raw,format=I420");
    GstPad *sink;

    capsfilter = gst_element_factory_make ("capsfilter", NULL);
    sink = gst_element_get_static_pad (capsfilter, "sink");
    gst_pad_add_probe (sink, GST_PAD_PROBE_TYPE_EVENT_DOWNSTREAM,
        check_caps_probe, NULL, NULL);
    g_object_unref (sink);

    g_object_set (capsfilter, "caps", filter_caps, NULL);
    gst_caps_unref (filter_caps);

    gst_bin_add (GST_BIN (self), capsfilter);
    gst_element_sync_state_with_parent (capsfilter);
  }

  kms_tree_bin_set_input_element (tree_bin, rate);
  output_tee = kms_tree_bin_get_output_tee (tree_bin);
  if (self->priv->enc_type == X264) {
    gst_element_link_many (rate, convert, mediator, capsfilter, self->priv->enc,
        output_tee, NULL);
  } else {
    gst_element_link_many (rate, convert, mediator, self->priv->enc, output_tee,
        NULL);
  }

  return TRUE;
}