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); }
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; } }
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; } }
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; }
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; }