C++ (Cpp) gst_vtenc_destroy_session Examples

Example #1

File: vtenc.c Project: dylansong77/gstreamer

static gboolean
gst_vtenc_sink_setcaps (GstPad * pad, GstCaps * caps)
{
  GstVTEnc *self = GST_VTENC_CAST (GST_PAD_PARENT (pad));
  GstStructure *structure;
  VTCompressionSessionRef session;

  GST_OBJECT_LOCK (self);

  structure = gst_caps_get_structure (caps, 0);
  gst_structure_get_int (structure, "width", &self->negotiated_width);
  gst_structure_get_int (structure, "height", &self->negotiated_height);
  gst_structure_get_fraction (structure, "framerate",
      &self->negotiated_fps_n, &self->negotiated_fps_d);

  gst_vtenc_destroy_session (self, &self->session);

  GST_OBJECT_UNLOCK (self);
  session = gst_vtenc_create_session (self);
  GST_OBJECT_LOCK (self);

  self->session = session;

  if (self->options != NULL)
    CFRelease (self->options);
  self->options = CFDictionaryCreateMutable (NULL, 0,
      &kCFTypeDictionaryKeyCallBacks, &kCFTypeDictionaryValueCallBacks);

  GST_OBJECT_UNLOCK (self);

  return TRUE;
}

Example #2

File: vtenc.c Project: dylansong77/gstreamer

static GstStateChangeReturn
gst_vtenc_change_state (GstElement * element, GstStateChange transition)
{
  GstVTEnc *self = GST_VTENC_CAST (element);
  GError *error = NULL;
  GstStateChangeReturn ret;

  if (transition == GST_STATE_CHANGE_NULL_TO_READY) {
    self->ctx = gst_core_media_ctx_new (GST_API_CORE_VIDEO | GST_API_CORE_MEDIA
        | GST_API_VIDEO_TOOLBOX, &error);
    if (error != NULL)
      goto api_error;

    self->cur_outbufs = g_ptr_array_new ();
  }

  ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);

  if (transition == GST_STATE_CHANGE_READY_TO_NULL) {
    GST_OBJECT_LOCK (self);

    gst_vtenc_destroy_session (self, &self->session);

    if (self->options != NULL) {
      CFRelease (self->options);
      self->options = NULL;
    }

    self->negotiated_width = self->negotiated_height = 0;
    self->negotiated_fps_n = self->negotiated_fps_d = 0;

    gst_vtenc_clear_cached_caps_downstream (self);

    GST_OBJECT_UNLOCK (self);

    g_ptr_array_free (self->cur_outbufs, TRUE);
    self->cur_outbufs = NULL;

    g_object_unref (self->ctx);
    self->ctx = NULL;
  }

  return ret;

api_error:
  {
    GST_ELEMENT_ERROR (self, RESOURCE, FAILED, ("API error"),
        ("%s", error->message));
    g_clear_error (&error);
    return GST_STATE_CHANGE_FAILURE;
  }
}

Example #3

File: vtenc.c Project: asdlei00/gst-plugins-bad

static gboolean
gst_vtenc_sink_setcaps (GstVTEnc * self, GstCaps * caps)
{
  GstStructure *structure;
  VTCompressionSessionRef session;

  GST_OBJECT_LOCK (self);

  structure = gst_caps_get_structure (caps, 0);
  gst_structure_get_int (structure, "width", &self->negotiated_width);
  gst_structure_get_int (structure, "height", &self->negotiated_height);
  gst_structure_get_fraction (structure, "framerate",
      &self->negotiated_fps_n, &self->negotiated_fps_d);

  if (!gst_video_info_from_caps (&self->video_info, caps))
    return FALSE;

  gst_vtenc_destroy_session (self, &self->session);

  GST_OBJECT_UNLOCK (self);
  session = gst_vtenc_create_session (self);
  GST_OBJECT_LOCK (self);

  self->session = session;

  if (self->options != NULL)
    CFRelease (self->options);
  self->options = CFDictionaryCreateMutable (NULL, 0,
      &kCFTypeDictionaryKeyCallBacks, &kCFTypeDictionaryValueCallBacks);

  /* renegotiate when upstream caps change */
  gst_pad_mark_reconfigure (self->srcpad);

  GST_OBJECT_UNLOCK (self);

  return TRUE;
}