C++ (Cpp) gst_camerabin_preview_set_caps Beispiele

Beispiel #1

Datei: gstbasecamerasrc.c Projekt: pli3/gst-plugins-bad

static GstStateChangeReturn
gst_base_camera_src_change_state (GstElement * element,
    GstStateChange transition)
{
  GstStateChangeReturn ret = GST_STATE_CHANGE_SUCCESS;
  GstBaseCameraSrc *self = GST_BASE_CAMERA_SRC (element);

  GST_DEBUG_OBJECT (self, "%d -> %d",
      GST_STATE_TRANSITION_CURRENT (transition),
      GST_STATE_TRANSITION_NEXT (transition));

  switch (transition) {
    case GST_STATE_CHANGE_NULL_TO_READY:
      if (!construct_pipeline (self))
        return GST_STATE_CHANGE_FAILURE;

      if (self->preview_pipeline == NULL) {
        /* failed to create preview pipeline, fail state change */
        return GST_STATE_CHANGE_FAILURE;
      }

      if (self->preview_caps) {
        GST_DEBUG_OBJECT (self,
            "Setting preview pipeline caps %" GST_PTR_FORMAT,
            self->preview_caps);
        gst_camerabin_preview_set_caps (self->preview_pipeline,
            self->preview_caps);
      }
      break;
    case GST_STATE_CHANGE_READY_TO_PAUSED:
      if (!setup_pipeline (self))
        return GST_STATE_CHANGE_FAILURE;
      /* without this the preview pipeline will not post buffer
       * messages on the pipeline */
      gst_element_set_state (self->preview_pipeline->pipeline,
          GST_STATE_PLAYING);
      if (self->auto_start)
        g_signal_emit_by_name (G_OBJECT (self), "start-capture", NULL);
      break;
    default:
      break;
  }

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

  switch (transition) {
    case GST_STATE_CHANGE_PAUSED_TO_READY:
      gst_element_set_state (self->preview_pipeline->pipeline, GST_STATE_READY);
      if (self->auto_start)
        g_signal_emit_by_name (G_OBJECT (self), "stop-capture", NULL);
      break;
    case GST_STATE_CHANGE_READY_TO_NULL:
      gst_element_set_state (self->preview_pipeline->pipeline, GST_STATE_NULL);
      break;
    default:
      break;
  }

  return ret;
}

Beispiel #2

Datei: gstbasecamerasrc.c Projekt: Tonyton/gstreamer-ducati

static GstStateChangeReturn
gst_base_camera_src_change_state (GstElement * element,
    GstStateChange transition)
{
  GstStateChangeReturn ret = GST_STATE_CHANGE_SUCCESS;
  GstBaseCameraBinSrc *self = GST_BASE_CAMERA_SRC (element);

  GST_DEBUG_OBJECT (self, "%d -> %d",
      GST_STATE_TRANSITION_CURRENT (transition),
      GST_STATE_TRANSITION_NEXT (transition));

  switch (transition) {
    case GST_STATE_CHANGE_NULL_TO_READY:
      if (!construct_pipeline (self))
        return GST_STATE_CHANGE_FAILURE;

      /* recreate the preview pipeline */
      if (self->preview_pipeline && self->preview_filter_changed) {
        gst_camerabin_destroy_preview_pipeline (self->preview_pipeline);
        self->preview_pipeline = NULL;
      }

      if (self->preview_pipeline == NULL)
        self->preview_pipeline =
            gst_camerabin_create_preview_pipeline (GST_ELEMENT_CAST (self),
            self->preview_filter);

      g_assert (self->preview_pipeline != NULL);
      self->preview_filter_changed = FALSE;
      if (self->preview_caps) {
        GST_DEBUG_OBJECT (self,
            "Setting preview pipeline caps %" GST_PTR_FORMAT,
            self->preview_caps);
        gst_camerabin_preview_set_caps (self->preview_pipeline,
            self->preview_caps);
      }
      break;
    case GST_STATE_CHANGE_READY_TO_PAUSED:
      if (!setup_pipeline (self))
        return GST_STATE_CHANGE_FAILURE;
      gst_element_set_state (self->preview_pipeline->pipeline,
          GST_STATE_PLAYING);
      break;
    default:
      break;
  }

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

  switch (transition) {
    case GST_STATE_CHANGE_READY_TO_NULL:
      gst_element_set_state (self->preview_pipeline->pipeline, GST_STATE_NULL);
      break;
    default:
      break;
  }

  return ret;
}

Beispiel #3

Datei: gstbasecamerasrc.c Projekt: Tonyton/gstreamer-ducati

/**
 * gst_base_camera_src_setup_preview:
 * @self: camerasrc bin
 * @preview_caps: preview caps to set
 *
 * Apply preview caps to preview pipeline and to video source.
 */
void
gst_base_camera_src_setup_preview (GstBaseCameraBinSrc * self,
    GstCaps * preview_caps)
{
  GstBaseCameraBinSrcClass *bclass = GST_BASE_CAMERA_SRC_GET_CLASS (self);

  if (self->preview_pipeline) {
    GST_DEBUG_OBJECT (self,
        "Setting preview pipeline caps %" GST_PTR_FORMAT, self->preview_caps);
    gst_camerabin_preview_set_caps (self->preview_pipeline, preview_caps);
  }

  if (bclass->set_preview)
    bclass->set_preview (self, preview_caps);
}