C++ (Cpp) GST_SIGNAL_PROCESSOR_GET_CLASS Examples

Example #1

File: gstlv2.c Project: JJCG/gst-plugins-bad

static void
gst_lv2_process (GstSignalProcessor * gsp, guint nframes)
{
#if 0
  GstSignalProcessorClass *gsp_class;
  GstLV2 *ladspa;
  GstLV2Class *oclass;
  LV2_Descriptor *desc;
  guint i;

  gsp_class = GST_SIGNAL_PROCESSOR_GET_CLASS (gsp);
  ladspa = (GstLV2 *) gsp;
  oclass = (GstLV2Class *) gsp_class;
  desc = ladspa->descriptor;

  for (i = 0; i < gsp_class->num_audio_in; i++)
    desc->connect_port (ladspa->handle, oclass->audio_in_portnums[i],
        gsp->audio_in[i]);
  for (i = 0; i < gsp_class->num_audio_out; i++)
    desc->connect_port (ladspa->handle, oclass->audio_out_portnums[i],
        gsp->audio_out[i]);

  desc->run (ladspa->handle, nframes);
#endif
}

Example #2

File: gstlv2.c Project: JJCG/gst-plugins-bad

static gboolean
gst_lv2_setup (GstSignalProcessor * gsp, guint sample_rate)
{
#if 0
  GstLV2 *ladspa;
  GstLV2Class *oclass;
  GstSignalProcessorClass *gsp_class;
  LV2_Descriptor *desc;
  int i;

  gsp_class = GST_SIGNAL_PROCESSOR_GET_CLASS (gsp);
  ladspa = (GstLV2 *) gsp;
  oclass = (GstLV2Class *) gsp_class;
  desc = ladspa->descriptor;

  g_return_val_if_fail (ladspa->handle == NULL, FALSE);
  g_return_val_if_fail (ladspa->activated == FALSE, FALSE);

  GST_DEBUG_OBJECT (ladspa, "instantiating the plugin at %d Hz", sample_rate);

  ladspa->handle = desc->instantiate (desc, sample_rate);

  g_return_val_if_fail (ladspa->handle != NULL, FALSE);

  /* connect the control ports */
  for (i = 0; i < gsp_class->num_control_in; i++)
    desc->connect_port (ladspa->handle,
        oclass->control_in_portnums[i], &(gsp->control_in[i]));
  for (i = 0; i < gsp_class->num_control_out; i++)
    desc->connect_port (ladspa->handle,
        oclass->control_out_portnums[i], &(gsp->control_out[i]));
#endif
  return TRUE;
}

Example #3

File: gstlv2.c Project: JJCG/gst-plugins-bad

static void
gst_lv2_set_property (GObject * object, guint prop_id, const GValue * value,
    GParamSpec * pspec)
{
#if 0
  GstSignalProcessor *gsp;
  GstSignalProcessorClass *gsp_class;

  gsp = GST_SIGNAL_PROCESSOR (object);
  gsp_class = GST_SIGNAL_PROCESSOR_GET_CLASS (object);

  /* remember, properties have an offset of 1 */
  prop_id--;

  /* only input ports */
  g_return_if_fail (prop_id < gsp_class->num_control_in);

  /* now see what type it is */
  switch (pspec->value_type) {
    case G_TYPE_BOOLEAN:
      gsp->control_in[prop_id] = g_value_get_boolean (value) ? 1.f : 0.f;
      break;
    case G_TYPE_INT:
      gsp->control_in[prop_id] = g_value_get_int (value);
      break;
    case G_TYPE_FLOAT:
      gsp->control_in[prop_id] = g_value_get_float (value);
      break;
    default:
      g_assert_not_reached ();
  }
#endif
}

Example #4

File: gstlv2.c Project: JJCG/gst-plugins-bad

static void
gst_lv2_get_property (GObject * object, guint prop_id, GValue * value,
    GParamSpec * pspec)
{
#if 0
  GstSignalProcessor *gsp;
  GstSignalProcessorClass *gsp_class;
  gfloat *controls;

  gsp = GST_SIGNAL_PROCESSOR (object);
  gsp_class = GST_SIGNAL_PROCESSOR_GET_CLASS (object);

  /* remember, properties have an offset of 1 */
  prop_id--;

  if (prop_id < gsp_class->num_control_in) {
    controls = gsp->control_in;
  } else if (prop_id < gsp_class->num_control_in + gsp_class->num_control_out) {
    controls = gsp->control_out;
    prop_id -= gsp_class->num_control_in;
  } else {
    g_return_if_reached ();
  }

  /* now see what type it is */
  switch (pspec->value_type) {
    case G_TYPE_BOOLEAN:
      g_value_set_boolean (value, controls[prop_id] > 0.5);
      break;
    case G_TYPE_INT:
      g_value_set_int (value, CLAMP (controls[prop_id], G_MININT, G_MAXINT));
      break;
    case G_TYPE_FLOAT:
      g_value_set_float (value, controls[prop_id]);
      break;
    default:
      g_return_if_reached ();
  }
#endif
}

Example #5

File: gstladspa.c Project: collects/gst-plugins-bad

static gboolean
gst_ladspa_setup (GstSignalProcessor * gsp, GstCaps * caps)
{
  GstLADSPA *ladspa;
  GstLADSPAClass *oclass;
  GstSignalProcessorClass *gsp_class;
  LADSPA_Descriptor *desc;
  gint i;

  gsp_class = GST_SIGNAL_PROCESSOR_GET_CLASS (gsp);
  ladspa = (GstLADSPA *) gsp;
  oclass = (GstLADSPAClass *) gsp_class;
  desc = ladspa->descriptor;

  g_return_val_if_fail (ladspa->handle == NULL, FALSE);
  g_return_val_if_fail (ladspa->activated == FALSE, FALSE);

  GST_DEBUG_OBJECT (ladspa, "instantiating the plugin at %d Hz",
      gsp->sample_rate);

  if (!(ladspa->handle = desc->instantiate (desc, gsp->sample_rate)))
    goto no_instance;

  /* connect the control ports */
  for (i = 0; i < gsp_class->num_control_in; i++)
    desc->connect_port (ladspa->handle,
        oclass->control_in_portnums[i], &(gsp->control_in[i]));
  for (i = 0; i < gsp_class->num_control_out; i++)
    desc->connect_port (ladspa->handle,
        oclass->control_out_portnums[i], &(gsp->control_out[i]));

  return TRUE;

no_instance:
  {
    GST_WARNING_OBJECT (gsp, "could not create instance");
    return FALSE;
  }
}