C++ (Cpp) median_5 Examples

Example #1

File: gstvideomedian.c Project: ConfusedReality/pkg_multimedia_gst-plugins-good

static GstFlowReturn
gst_video_median_transform_frame (GstVideoFilter * filter,
    GstVideoFrame * in_frame, GstVideoFrame * out_frame)
{
  GstVideoMedian *median = GST_VIDEO_MEDIAN (filter);

  if (median->filtersize == 5) {
    median_5 (GST_VIDEO_FRAME_PLANE_DATA (out_frame, 0),
        GST_VIDEO_FRAME_PLANE_STRIDE (out_frame, 0),
        GST_VIDEO_FRAME_PLANE_DATA (in_frame, 0),
        GST_VIDEO_FRAME_PLANE_STRIDE (in_frame, 0),
        GST_VIDEO_FRAME_WIDTH (in_frame), GST_VIDEO_FRAME_HEIGHT (in_frame));

    if (median->lum_only) {
      gst_video_frame_copy_plane (out_frame, in_frame, 1);
      gst_video_frame_copy_plane (out_frame, in_frame, 2);
    } else {
      median_5 (GST_VIDEO_FRAME_PLANE_DATA (out_frame, 1),
          GST_VIDEO_FRAME_PLANE_STRIDE (out_frame, 1),
          GST_VIDEO_FRAME_PLANE_DATA (in_frame, 1),
          GST_VIDEO_FRAME_PLANE_STRIDE (in_frame, 1),
          GST_VIDEO_FRAME_WIDTH (in_frame) / 2,
          GST_VIDEO_FRAME_HEIGHT (in_frame) / 2);
      median_5 (GST_VIDEO_FRAME_PLANE_DATA (out_frame, 2),
          GST_VIDEO_FRAME_PLANE_STRIDE (out_frame, 2),
          GST_VIDEO_FRAME_PLANE_DATA (in_frame, 2),
          GST_VIDEO_FRAME_PLANE_STRIDE (in_frame, 2),
          GST_VIDEO_FRAME_WIDTH (in_frame) / 2,
          GST_VIDEO_FRAME_HEIGHT (in_frame) / 2);
    }
  } else {
    median_9 (GST_VIDEO_FRAME_PLANE_DATA (out_frame, 0),
        GST_VIDEO_FRAME_PLANE_STRIDE (out_frame, 0),
        GST_VIDEO_FRAME_PLANE_DATA (in_frame, 0),
        GST_VIDEO_FRAME_PLANE_STRIDE (in_frame, 0),
        GST_VIDEO_FRAME_WIDTH (in_frame), GST_VIDEO_FRAME_HEIGHT (in_frame));

    if (median->lum_only) {
      gst_video_frame_copy_plane (out_frame, in_frame, 1);
      gst_video_frame_copy_plane (out_frame, in_frame, 2);
    } else {
      median_9 (GST_VIDEO_FRAME_PLANE_DATA (out_frame, 1),
          GST_VIDEO_FRAME_PLANE_STRIDE (out_frame, 1),
          GST_VIDEO_FRAME_PLANE_DATA (in_frame, 1),
          GST_VIDEO_FRAME_PLANE_STRIDE (in_frame, 1),
          GST_VIDEO_FRAME_WIDTH (in_frame) / 2,
          GST_VIDEO_FRAME_HEIGHT (in_frame) / 2);
      median_9 (GST_VIDEO_FRAME_PLANE_DATA (out_frame, 2),
          GST_VIDEO_FRAME_PLANE_STRIDE (out_frame, 2),
          GST_VIDEO_FRAME_PLANE_DATA (in_frame, 2),
          GST_VIDEO_FRAME_PLANE_STRIDE (in_frame, 2),
          GST_VIDEO_FRAME_WIDTH (in_frame) / 2,
          GST_VIDEO_FRAME_HEIGHT (in_frame) / 2);
    }
  }

  return GST_FLOW_OK;
}

Example #2

File: gstmedian.c Project: prajnashi/gst-plugins-good

static void
gst_median_chain (GstPad * pad, GstData * _data)
{
  GstBuffer *buf = GST_BUFFER (_data);
  GstMedian *median;
  guchar *data;
  gulong size;
  GstBuffer *outbuf;

/*  GstMeta *meta; */
  int lumsize, chromsize;

  g_return_if_fail (pad != NULL);
  g_return_if_fail (GST_IS_PAD (pad));
  g_return_if_fail (buf != NULL);

  median = GST_MEDIAN (GST_OBJECT_PARENT (pad));

  if (!median->active) {
    gst_pad_push (median->srcpad, GST_DATA (buf));
    return;
  }

  data = GST_BUFFER_DATA (buf);
  size = GST_BUFFER_SIZE (buf);

  GST_DEBUG ("median: have buffer of %d", GST_BUFFER_SIZE (buf));

  outbuf = gst_buffer_new ();
  GST_BUFFER_DATA (outbuf) = g_malloc (GST_BUFFER_SIZE (buf));
  GST_BUFFER_SIZE (outbuf) = GST_BUFFER_SIZE (buf);

  lumsize = median->width * median->height;
  chromsize = lumsize / 4;

  if (median->filtersize == 5) {
    median_5 (data, GST_BUFFER_DATA (outbuf), median->width, median->height);
    if (!median->lum_only) {
      median_5 (data + lumsize, GST_BUFFER_DATA (outbuf) + lumsize,
          median->width / 2, median->height / 2);
      median_5 (data + lumsize + chromsize,
          GST_BUFFER_DATA (outbuf) + lumsize + chromsize, median->width / 2,
          median->height / 2);
    } else {
      memcpy (GST_BUFFER_DATA (outbuf) + lumsize, data + lumsize,
          chromsize * 2);
    }
  } else {
    median_9 (data, GST_BUFFER_DATA (outbuf), median->width, median->height);
    if (!median->lum_only) {
      median_9 (data + lumsize, GST_BUFFER_DATA (outbuf) + lumsize,
          median->width / 2, median->height / 2);
      median_9 (data + lumsize + chromsize,
          GST_BUFFER_DATA (outbuf) + lumsize + chromsize, median->width / 2,
          median->height / 2);
    } else {
      memcpy (GST_BUFFER_DATA (outbuf) + lumsize, data + lumsize,
          chromsize * 2);
    }
  }
  GST_BUFFER_TIMESTAMP (outbuf) = GST_BUFFER_TIMESTAMP (buf);

  gst_buffer_unref (buf);

  gst_pad_push (median->srcpad, GST_DATA (outbuf));
}