C++ (Cpp) gst_gdk_pixbuf_dec_flush Examples

Example #1

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

static gboolean
gst_gdk_pixbuf_dec_sink_event (GstPad * pad, GstObject * parent,
    GstEvent * event)
{
  GstFlowReturn res = GST_FLOW_OK;
  gboolean ret = TRUE, forward = TRUE;
  GstGdkPixbufDec *pixbuf;

  pixbuf = GST_GDK_PIXBUF_DEC (parent);

  switch (GST_EVENT_TYPE (event)) {
    case GST_EVENT_CAPS:
    {
      GstCaps *caps;

      gst_event_parse_caps (event, &caps);
      ret = gst_gdk_pixbuf_dec_sink_setcaps (pixbuf, caps);
      forward = FALSE;
      break;
    }
    case GST_EVENT_EOS:
      if (pixbuf->pixbuf_loader != NULL) {
        gdk_pixbuf_loader_close (pixbuf->pixbuf_loader, NULL);
        res = gst_gdk_pixbuf_dec_flush (pixbuf);
        g_object_unref (G_OBJECT (pixbuf->pixbuf_loader));
        pixbuf->pixbuf_loader = NULL;
        /* as long as we don't have flow returns for event functions we need
         * to post an error here, or the application might never know that
         * things failed */
        if (res != GST_FLOW_OK && res != GST_FLOW_FLUSHING) {
          GST_ELEMENT_ERROR (pixbuf, STREAM, FAILED, (NULL),
              ("Flow: %s", gst_flow_get_name (res)));
          forward = FALSE;
          ret = FALSE;
        }
      }
      break;
    case GST_EVENT_SEGMENT:
    case GST_EVENT_FLUSH_STOP:
      if (pixbuf->pixbuf_loader != NULL) {
        gdk_pixbuf_loader_close (pixbuf->pixbuf_loader, NULL);
        g_object_unref (G_OBJECT (pixbuf->pixbuf_loader));
        pixbuf->pixbuf_loader = NULL;
      }
      break;
    default:
      break;
  }
  if (forward) {
    ret = gst_pad_event_default (pad, parent, event);
  } else {
    gst_event_unref (event);
  }
  return ret;
}

Example #2

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

static GstFlowReturn
gst_gdk_pixbuf_dec_chain (GstPad * pad, GstObject * parent, GstBuffer * buf)
{
  GstGdkPixbufDec *filter;
  GstFlowReturn ret = GST_FLOW_OK;
  GError *error = NULL;
  GstClockTime timestamp;
  GstMapInfo map;

  filter = GST_GDK_PIXBUF_DEC (parent);

  timestamp = GST_BUFFER_TIMESTAMP (buf);

  if (GST_CLOCK_TIME_IS_VALID (timestamp))
    filter->last_timestamp = timestamp;

  GST_LOG_OBJECT (filter, "buffer with ts: %" GST_TIME_FORMAT,
      GST_TIME_ARGS (timestamp));

  if (filter->pixbuf_loader == NULL)
    filter->pixbuf_loader = gdk_pixbuf_loader_new ();

  gst_buffer_map (buf, &map, GST_MAP_READ);

  GST_LOG_OBJECT (filter, "Writing buffer size %d", (gint) map.size);
  if (!gdk_pixbuf_loader_write (filter->pixbuf_loader, map.data, map.size,
          &error))
    goto error;

  /* packetised mode? *//* FIXME: shouln't this be fps_d != 0, since 0/1
   * might be packetised mode but variable framerate */
  if (filter->in_fps_n != 0) {
    gdk_pixbuf_loader_close (filter->pixbuf_loader, NULL);
    ret = gst_gdk_pixbuf_dec_flush (filter);
    g_object_unref (filter->pixbuf_loader);
    filter->pixbuf_loader = NULL;
  }

  gst_buffer_unmap (buf, &map);
  gst_buffer_unref (buf);

  return ret;

  /* ERRORS */
error:
  {
    GST_ELEMENT_ERROR (filter, STREAM, DECODE, (NULL),
        ("gdk_pixbuf_loader_write error: %s", error->message));
    g_error_free (error);
    gst_buffer_unmap (buf, &map);
    gst_buffer_unref (buf);
    return GST_FLOW_ERROR;
  }
}

Example #3

File: gstgdkpixbufdec.c Project: DylanZA/gst-plugins-good

static gboolean
gst_gdk_pixbuf_dec_sink_event (GstPad * pad, GstObject * parent,
    GstEvent * event)
{
  GstFlowReturn res = GST_FLOW_OK;
  gboolean ret = TRUE, forward = TRUE;
  GstGdkPixbufDec *pixbuf;

  pixbuf = GST_GDK_PIXBUF_DEC (parent);

  switch (GST_EVENT_TYPE (event)) {
    case GST_EVENT_CAPS:
    {
      GstCaps *caps;

      gst_event_parse_caps (event, &caps);
      ret = gst_gdk_pixbuf_dec_sink_setcaps (pixbuf, caps);
      forward = FALSE;
      break;
    }
    case GST_EVENT_EOS:
      if (pixbuf->pixbuf_loader != NULL) {
        gdk_pixbuf_loader_close (pixbuf->pixbuf_loader, NULL);
        res = gst_gdk_pixbuf_dec_flush (pixbuf);
        g_object_unref (G_OBJECT (pixbuf->pixbuf_loader));
        pixbuf->pixbuf_loader = NULL;
        /* as long as we don't have flow returns for event functions we need
         * to post an error here, or the application might never know that
         * things failed */
        if (res != GST_FLOW_OK && res != GST_FLOW_FLUSHING
            && res != GST_FLOW_EOS && res != GST_FLOW_NOT_LINKED) {
          GST_ELEMENT_ERROR (pixbuf, STREAM, FAILED, (NULL), ("Flow: %s",
                  gst_flow_get_name (res)));
          forward = FALSE;
          ret = FALSE;
        }
      }
      break;
    case GST_EVENT_FLUSH_STOP:
      g_list_free_full (pixbuf->pending_events,
          (GDestroyNotify) gst_event_unref);
      pixbuf->pending_events = NULL;
      /* Fall through */
    case GST_EVENT_SEGMENT:
    {
      const GstSegment *segment;
      gst_event_parse_segment (event, &segment);
      if (segment->format == GST_FORMAT_BYTES)
        pixbuf->packetized = FALSE;
      else
        pixbuf->packetized = TRUE;
      if (pixbuf->pixbuf_loader != NULL) {
        gdk_pixbuf_loader_close (pixbuf->pixbuf_loader, NULL);
        g_object_unref (G_OBJECT (pixbuf->pixbuf_loader));
        pixbuf->pixbuf_loader = NULL;
      }
      break;
    }
    default:
      break;
  }
  if (forward) {
    if (!gst_pad_has_current_caps (pixbuf->srcpad) &&
        GST_EVENT_IS_SERIALIZED (event)
        && GST_EVENT_TYPE (event) > GST_EVENT_CAPS
        && GST_EVENT_TYPE (event) != GST_EVENT_FLUSH_STOP
        && GST_EVENT_TYPE (event) != GST_EVENT_EOS) {
      ret = TRUE;
      pixbuf->pending_events = g_list_prepend (pixbuf->pending_events, event);
    } else {
      ret = gst_pad_event_default (pad, parent, event);
    }
  } else {
    gst_event_unref (event);
  }
  return ret;
}