+GST_START_TEST (test_crc)
+{
+ GstCaps *caps;
+ GstElement *gdppay;
+ GstBuffer *inbuffer, *outbuffer;
+ GstEvent *event;
+ gchar *caps_string;
+ gint length;
+ guint16 crc_calculated, crc_read;
+
+ gdppay = setup_gdppay ();
+ g_object_set (gdppay, "crc-header", TRUE, NULL);
+
+ fail_unless (gst_element_set_state (gdppay,
+ GST_STATE_PLAYING) == GST_STATE_CHANGE_SUCCESS,
+ "could not set to playing");
+
+ GST_DEBUG ("new segment");
+ event =
+ gst_event_new_new_segment (FALSE, 1.0, GST_FORMAT_TIME, 0, GST_SECOND, 0);
+ fail_unless (gst_pad_push_event (mysrcpad, event));
+
+ /* no buffer should be pushed yet, waiting for caps */
+ fail_unless_equals_int (g_list_length (buffers), 0);
+
+ GST_DEBUG ("first buffer");
+ inbuffer = gst_buffer_new_and_alloc (4);
+ caps = gst_caps_from_string (AUDIO_CAPS_STRING);
+ gst_buffer_set_caps (inbuffer, caps);
+ caps_string = gst_caps_to_string (caps);
+
+ ASSERT_BUFFER_REFCOUNT (inbuffer, "inbuffer", 1);
+
+ /* pushing gives away my reference */
+ fail_unless (gst_pad_push (mysrcpad, inbuffer) == GST_FLOW_OK);
+
+ /* we should have three buffers now */
+ fail_unless_equals_int (g_list_length (buffers), 3);
+
+ /* first buffer is the serialized new_segment event;
+ * the element also holds a ref to it */
+ fail_if ((outbuffer = (GstBuffer *) buffers->data) == NULL);
+ buffers = g_list_remove (buffers, outbuffer);
+ ASSERT_BUFFER_REFCOUNT (outbuffer, "outbuffer", 2);
+
+ /* verify the header checksum */
+ /* CRC's start at 58 in the header */
+ crc_calculated = gst_dp_crc (GST_BUFFER_DATA (outbuffer), 58);
+ crc_read = GST_READ_UINT16_BE (GST_BUFFER_DATA (outbuffer) + 58);
+ fail_unless_equals_int (crc_calculated, crc_read);
+
+ /* change a byte in the header and verify that the checksum now fails */
+ GST_BUFFER_DATA (outbuffer)[0] = 0xff;
+ crc_calculated = gst_dp_crc (GST_BUFFER_DATA (outbuffer), 58);
+ fail_if (crc_calculated == crc_read,
+ "Introducing a byte error in the header should make the checksum fail");
+
+ gst_buffer_unref (outbuffer);
+
+ /* second buffer is the serialized caps;
+ * the element also holds a ref to it */
+ fail_if ((outbuffer = (GstBuffer *) buffers->data) == NULL);
+ buffers = g_list_remove (buffers, outbuffer);
+ ASSERT_BUFFER_REFCOUNT (outbuffer, "outbuffer", 2);
+ length = GST_DP_HEADER_LENGTH + (strlen (caps_string) + 1);
+ fail_unless_equals_int (GST_BUFFER_SIZE (outbuffer), length);
+ gst_buffer_unref (outbuffer);
+
+ /* the third buffer is the GDP buffer for our pushed buffer */
+ fail_if ((outbuffer = (GstBuffer *) buffers->data) == NULL);
+ buffers = g_list_remove (buffers, outbuffer);
+ ASSERT_BUFFER_REFCOUNT (outbuffer, "outbuffer", 1);
+ length = GST_DP_HEADER_LENGTH + 4;
+ fail_unless_equals_int (GST_BUFFER_SIZE (outbuffer), length);
+ gst_buffer_unref (outbuffer);
+
+ fail_unless (gst_element_set_state (gdppay,
+ GST_STATE_NULL) == GST_STATE_CHANGE_SUCCESS, "could not set to null");
+
+ gst_caps_unref (caps);
+ g_free (caps_string);
+ g_list_foreach (buffers, (GFunc) gst_mini_object_unref, NULL);
+ g_list_free (buffers);
+ buffers = NULL;
+ ASSERT_OBJECT_REFCOUNT (gdppay, "gdppay", 1);
+ gst_object_unref (gdppay);
+}
+
+GST_END_TEST;
+