C++ (Cpp) GST_DICETV Examples

Example #1

File: gstdice.c Project: ChinnaSuhas/ossbuild

static void
gst_dicetv_finalize (GObject * object)
{
  GstDiceTV *filter = GST_DICETV (object);

  g_free (filter->dicemap);
  filter->dicemap = NULL;

  G_OBJECT_CLASS (parent_class)->finalize (object);
}

Example #2

File: gstdice.c Project: ChinnaSuhas/ossbuild

static void
gst_dicetv_get_property (GObject * object, guint prop_id, GValue * value,
    GParamSpec * pspec)
{
  GstDiceTV *filter = GST_DICETV (object);

  switch (prop_id) {
    case PROP_CUBE_BITS:
      g_value_set_int (value, filter->g_cube_bits);
      break;
    default:
      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
      break;
  }
}

Example #3

File: gstdice.c Project: ChinnaSuhas/ossbuild

static void
gst_dicetv_set_property (GObject * object, guint prop_id, const GValue * value,
    GParamSpec * pspec)
{
  GstDiceTV *filter = GST_DICETV (object);

  switch (prop_id) {
    case PROP_CUBE_BITS:
      GST_OBJECT_LOCK (filter);
      filter->g_cube_bits = g_value_get_int (value);
      gst_dicetv_create_map (filter);
      GST_OBJECT_UNLOCK (filter);
      break;
    default:
      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
      break;
  }
}

Example #4

File: gstdice.c Project: zsx/ossbuild

static gboolean
gst_dicetv_set_caps (GstBaseTransform * btrans, GstCaps * incaps,
    GstCaps * outcaps)
{
  GstDiceTV *filter = GST_DICETV (btrans);
  GstStructure *structure;
  gboolean ret = FALSE;

  structure = gst_caps_get_structure (incaps, 0);

  if (gst_structure_get_int (structure, "width", &filter->width) &&
      gst_structure_get_int (structure, "height", &filter->height)) {
    g_free (filter->dicemap);
    filter->dicemap = (guint8 *) g_malloc (filter->height * filter->width);
    gst_dicetv_create_map (filter);
    ret = TRUE;
  }

  return ret;
}

Example #5

File: gstdice.c Project: ChinnaSuhas/ossbuild

static GstFlowReturn
gst_dicetv_transform (GstBaseTransform * trans, GstBuffer * in, GstBuffer * out)
{
  GstDiceTV *filter = GST_DICETV (trans);
  guint32 *src, *dest;
  gint i, map_x, map_y, map_i, base, dx, dy, di;
  gint video_width, g_cube_bits, g_cube_size;
  gint g_map_height, g_map_width;
  GstFlowReturn ret = GST_FLOW_OK;
  GstClockTime timestamp, stream_time;
  const guint8 *dicemap;

  src = (guint32 *) GST_BUFFER_DATA (in);
  dest = (guint32 *) GST_BUFFER_DATA (out);

  timestamp = GST_BUFFER_TIMESTAMP (in);
  stream_time =
      gst_segment_to_stream_time (&trans->segment, GST_FORMAT_TIME, timestamp);

  GST_DEBUG_OBJECT (filter, "sync to %" GST_TIME_FORMAT,
      GST_TIME_ARGS (timestamp));

  if (GST_CLOCK_TIME_IS_VALID (stream_time))
    gst_object_sync_values (G_OBJECT (filter), stream_time);

  GST_OBJECT_LOCK (filter);
  video_width = filter->width;
  g_cube_bits = filter->g_cube_bits;
  g_cube_size = filter->g_cube_size;
  g_map_height = filter->g_map_height;
  g_map_width = filter->g_map_width;

  dicemap = filter->dicemap;

  map_i = 0;
  for (map_y = 0; map_y < g_map_height; map_y++) {
    for (map_x = 0; map_x < g_map_width; map_x++) {
      base = (map_y << g_cube_bits) * video_width + (map_x << g_cube_bits);

      switch (dicemap[map_i]) {
        case DICE_UP:
          for (dy = 0; dy < g_cube_size; dy++) {
            i = base + dy * video_width;
            for (dx = 0; dx < g_cube_size; dx++) {
              dest[i] = src[i];
              i++;
            }
          }
          break;
        case DICE_LEFT:
          for (dy = 0; dy < g_cube_size; dy++) {
            i = base + dy * video_width;

            for (dx = 0; dx < g_cube_size; dx++) {
              di = base + (dx * video_width) + (g_cube_size - dy - 1);
              dest[di] = src[i];
              i++;
            }
          }
          break;
        case DICE_DOWN:
          for (dy = 0; dy < g_cube_size; dy++) {
            di = base + dy * video_width;
            i = base + (g_cube_size - dy - 1) * video_width + g_cube_size;
            for (dx = 0; dx < g_cube_size; dx++) {
              i--;
              dest[di] = src[i];
              di++;
            }
          }
          break;
        case DICE_RIGHT:
          for (dy = 0; dy < g_cube_size; dy++) {
            i = base + (dy * video_width);
            for (dx = 0; dx < g_cube_size; dx++) {
              di = base + dy + (g_cube_size - dx - 1) * video_width;
              dest[di] = src[i];
              i++;
            }
          }
          break;
        default:
          g_assert_not_reached ();
          break;
      }
      map_i++;
    }
  }
  GST_OBJECT_UNLOCK (filter);

  return ret;
}