/* we also have a list of src buffers */
static GList *inbuffers = NULL;
+static GMainLoop *main_loop;
+
#define RTP_CAPS_STRING \
"application/x-rtp, " \
"media = (string)audio, " \
GST_END_TEST;
+static void
+message_received (GstBus * bus, GstMessage * message, GstPipeline * bin)
+{
+ GST_INFO ("bus message from \"%" GST_PTR_FORMAT "\": %" GST_PTR_FORMAT,
+ GST_MESSAGE_SRC (message), message);
+
+ switch (message->type) {
+ case GST_MESSAGE_EOS:
+ g_main_loop_quit (main_loop);
+ break;
+ case GST_MESSAGE_WARNING:{
+ GError *gerror;
+ gchar *debug;
+
+ gst_message_parse_warning (message, &gerror, &debug);
+ gst_object_default_error (GST_MESSAGE_SRC (message), gerror, debug);
+ g_error_free (gerror);
+ g_free (debug);
+ break;
+ }
+ case GST_MESSAGE_ERROR:{
+ GError *gerror;
+ gchar *debug;
+
+ gst_message_parse_error (message, &gerror, &debug);
+ gst_object_default_error (GST_MESSAGE_SRC (message), gerror, debug);
+ g_error_free (gerror);
+ g_free (debug);
+ g_main_loop_quit (main_loop);
+ break;
+ }
+ default:
+ break;
+ }
+}
+
+typedef struct
+{
+ guint count;
+ guint nb_packets;
+ guint drop_every_n_packets;
+} RTXSendData;
+
+typedef struct
+{
+ guint nb_packets;
+ guint seqnum_offset;
+ guint seqnum_prev;
+} RTXReceiveData;
+
+static GstPadProbeReturn
+rtprtxsend_srcpad_probe (GstPad * pad, GstPadProbeInfo * info,
+ gpointer user_data)
+{
+ GstPadProbeReturn ret = GST_PAD_PROBE_OK;
+
+ if (info->type == (GST_PAD_PROBE_TYPE_BUFFER | GST_PAD_PROBE_TYPE_PUSH)) {
+ GstBuffer *buffer = GST_BUFFER (info->data);
+ RTXSendData *rtxdata = (RTXSendData *) user_data;
+ GstRTPBuffer rtp = GST_RTP_BUFFER_INIT;
+ guint payload_type = 0;
+
+ gst_rtp_buffer_map (buffer, GST_MAP_READ, &rtp);
+ payload_type = gst_rtp_buffer_get_payload_type (&rtp);
+
+ /* main stream packets */
+ if (payload_type == 96) {
+ /* count packets of the main stream */
+ ++rtxdata->nb_packets;
+ /* drop some packets */
+ if (rtxdata->count < rtxdata->drop_every_n_packets) {
+ ++rtxdata->count;
+ } else {
+ /* drop a packet every 'rtxdata->count' packets */
+ rtxdata->count = 1;
+ ret = GST_PAD_PROBE_DROP;
+ }
+ } else {
+ /* retransmission packets */
+ }
+
+ gst_rtp_buffer_unmap (&rtp);
+ }
+
+ return ret;
+}
+
+static GstPadProbeReturn
+rtprtxreceive_srcpad_probe (GstPad * pad, GstPadProbeInfo * info,
+ gpointer user_data)
+{
+ if (info->type == (GST_PAD_PROBE_TYPE_BUFFER | GST_PAD_PROBE_TYPE_PUSH)) {
+ GstBuffer *buffer = GST_BUFFER (info->data);
+ RTXReceiveData *rtxdata = (RTXReceiveData *) user_data;
+ GstRTPBuffer rtp = GST_RTP_BUFFER_INIT;
+ guint seqnum = 0;
+ guint i = 0;
+
+ gst_rtp_buffer_map (buffer, GST_MAP_READ, &rtp);
+ seqnum = gst_rtp_buffer_get_seq (&rtp);
+
+ /* check if there is a dropped packet */
+ if (seqnum > rtxdata->seqnum_prev + rtxdata->seqnum_offset) {
+ GstPad *peerpad = gst_pad_get_peer (pad);
+
+ /* ask retransmission of missing packet */
+ for (i = rtxdata->seqnum_prev + rtxdata->seqnum_offset; i < seqnum;
+ i += rtxdata->seqnum_offset) {
+ GstEvent *event = gst_event_new_custom (GST_EVENT_CUSTOM_UPSTREAM,
+ gst_structure_new ("GstRTPRetransmissionRequest",
+ "seqnum", G_TYPE_UINT, i,
+ "ssrc", G_TYPE_UINT, gst_rtp_buffer_get_ssrc (&rtp),
+ "payload-type", G_TYPE_UINT,
+ gst_rtp_buffer_get_payload_type (&rtp),
+ NULL));
+ gst_pad_push_event (peerpad, event);
+ }
+ gst_object_unref (peerpad);
+
+ rtxdata->seqnum_prev = seqnum;
+ } else if (seqnum == rtxdata->seqnum_prev + rtxdata->seqnum_offset) {
+ /* also update previous seqnum in this case */
+ rtxdata->seqnum_prev = seqnum;
+ }
+
+ gst_rtp_buffer_unmap (&rtp);
+
+ ++rtxdata->nb_packets;
+ }
+
+ return GST_PAD_PROBE_OK;
+}
+
+static void
+start_test_drop_and_check_results (GstElement * bin, GstElement * rtppayloader,
+ GstElement * rtprtxsend, GstElement * rtprtxreceive,
+ RTXSendData * send_rtxdata, RTXReceiveData * receive_rtxdata,
+ guint drop_every_n_packets)
+{
+ GstStateChangeReturn state_res = GST_STATE_CHANGE_FAILURE;
+ guint nbrtxrequests = 0;
+ guint nbrtxpackets = 0;
+ guint nb_expected_requests = 0;
+
+ GST_INFO ("starting test");
+
+ g_object_set (rtppayloader, "pt", 96, NULL);
+ g_object_set (rtppayloader, "seqnum-offset", 1, NULL);
+ g_object_set (rtprtxsend, "rtx-payload-type", 99, NULL);
+ g_object_set (rtprtxreceive, "rtx-payload-types", "99:111:125", NULL);
+
+ send_rtxdata->count = 1;
+ send_rtxdata->nb_packets = 0;
+ send_rtxdata->drop_every_n_packets = drop_every_n_packets;
+
+ receive_rtxdata->nb_packets = 0;
+ receive_rtxdata->seqnum_offset = 0;
+ receive_rtxdata->seqnum_prev = 0;
+
+ /* retrieve offset before going to paused */
+ g_object_get (G_OBJECT (rtppayloader), "seqnum-offset",
+ &receive_rtxdata->seqnum_offset, NULL);
+
+ /* prepare playing */
+ state_res = gst_element_set_state (bin, GST_STATE_PAUSED);
+ ck_assert_int_ne (state_res, GST_STATE_CHANGE_FAILURE);
+
+ /* wait for completion */
+ state_res = gst_element_get_state (bin, NULL, NULL, GST_CLOCK_TIME_NONE);
+ ck_assert_int_ne (state_res, GST_STATE_CHANGE_FAILURE);
+
+ /* retrieve seqnum_prev here to make sure it has been reseted */
+ g_object_get (G_OBJECT (rtppayloader), "seqnum",
+ &receive_rtxdata->seqnum_prev, NULL);
+
+ /* run pipeline */
+ state_res = gst_element_set_state (bin, GST_STATE_PLAYING);
+ ck_assert_int_ne (state_res, GST_STATE_CHANGE_FAILURE);
+
+ GST_INFO ("running main loop");
+ g_main_loop_run (main_loop);
+
+ /* check results */
+
+ if (send_rtxdata->nb_packets % drop_every_n_packets == 0) {
+ /* special case because the last buffer will be dropped
+ * so the receiver cannot know if it has been dropped (no next packet)
+ */
+ nb_expected_requests = send_rtxdata->nb_packets / drop_every_n_packets - 1;
+ fail_unless_equals_int (send_rtxdata->nb_packets,
+ receive_rtxdata->nb_packets + 1);
+ } else {
+ nb_expected_requests = send_rtxdata->nb_packets / drop_every_n_packets;
+ fail_unless_equals_int (send_rtxdata->nb_packets,
+ receive_rtxdata->nb_packets);
+ }
+
+ g_object_get (G_OBJECT (rtprtxsend), "num-rtx-requests", &nbrtxrequests,
+ NULL);
+ fail_unless_equals_int (nbrtxrequests, nb_expected_requests);
+
+ g_object_get (G_OBJECT (rtprtxsend), "num-rtx-packets", &nbrtxpackets, NULL);
+ fail_unless_equals_int (nbrtxpackets, nb_expected_requests);
+
+ g_object_get (G_OBJECT (rtprtxreceive), "num-rtx-requests", &nbrtxrequests,
+ NULL);
+ fail_unless_equals_int (nbrtxrequests, nb_expected_requests);
+
+ g_object_get (G_OBJECT (rtprtxreceive), "num-rtx-packets", &nbrtxpackets,
+ NULL);
+ fail_unless_equals_int (nbrtxpackets, nb_expected_requests);
+
+ g_object_get (G_OBJECT (rtprtxreceive), "num-rtx-assoc-packets",
+ &nbrtxpackets, NULL);
+ fail_unless_equals_int (nbrtxpackets, nb_expected_requests);
+
+ state_res = gst_element_set_state (bin, GST_STATE_NULL);
+ ck_assert_int_ne (state_res, GST_STATE_CHANGE_FAILURE);
+}
+
+/* This test build the pipeline videotestsrc ! rtpvrawpay ! rtprtxsend ! rtprtxreceive ! fakesink
+ * and drop some buffer between rtprtxsend and rtprtxreceive
+ * Then it checks that every dropped packet has been re-sent and it checks that
+ * not too much requests has been sent.
+ */
+GST_START_TEST (test_drop_one_sender)
+{
+ GstElement *bin, *src, *rtppayloader, *rtprtxsend, *rtprtxreceive, *sink;
+ GstBus *bus;
+ gboolean res;
+ GstPad *srcpad, *sinkpad;
+ GstStreamConsistency *chk_1, *chk_2, *chk_3;
+ gint num_buffers = 20;
+ guint drop_every_n_packets = 0;
+ RTXSendData send_rtxdata;
+ RTXReceiveData receive_rtxdata;
+
+ GST_INFO ("preparing test");
+
+ /* build pipeline */
+ bin = gst_pipeline_new ("pipeline");
+ bus = gst_element_get_bus (bin);
+ gst_bus_add_signal_watch_full (bus, G_PRIORITY_HIGH);
+
+ src = gst_element_factory_make ("videotestsrc", "src");
+ g_object_set (src, "num-buffers", num_buffers, NULL);
+ rtppayloader = gst_element_factory_make ("rtpvrawpay", "rtppayloader");
+ rtprtxsend = gst_element_factory_make ("rtprtxsend", "rtprtxsend");
+ rtprtxreceive = gst_element_factory_make ("rtprtxreceive", "rtprtxreceive");
+ sink = gst_element_factory_make ("fakesink", "sink");
+ gst_bin_add_many (GST_BIN (bin), src, rtppayloader, rtprtxsend, rtprtxreceive,
+ sink, NULL);
+
+ res = gst_element_link (src, rtppayloader);
+ fail_unless (res == TRUE, NULL);
+ res = gst_element_link (rtppayloader, rtprtxsend);
+ fail_unless (res == TRUE, NULL);
+ res = gst_element_link (rtprtxsend, rtprtxreceive);
+ fail_unless (res == TRUE, NULL);
+ res = gst_element_link (rtprtxreceive, sink);
+ fail_unless (res == TRUE, NULL);
+
+ /* create consistency checkers for the pads */
+
+ srcpad = gst_element_get_static_pad (rtppayloader, "src");
+ chk_1 = gst_consistency_checker_new (srcpad);
+ gst_object_unref (srcpad);
+
+ srcpad = gst_element_get_static_pad (rtprtxsend, "src");
+ gst_pad_add_probe (srcpad,
+ (GST_PAD_PROBE_TYPE_BUFFER | GST_PAD_PROBE_TYPE_PUSH),
+ (GstPadProbeCallback) rtprtxsend_srcpad_probe, &send_rtxdata, NULL);
+ sinkpad = gst_pad_get_peer (srcpad);
+ fail_if (sinkpad == NULL);
+ chk_2 = gst_consistency_checker_new (sinkpad);
+ gst_object_unref (sinkpad);
+ gst_object_unref (srcpad);
+
+ srcpad = gst_element_get_static_pad (rtprtxreceive, "src");
+ gst_pad_add_probe (srcpad,
+ (GST_PAD_PROBE_TYPE_BUFFER | GST_PAD_PROBE_TYPE_PUSH),
+ (GstPadProbeCallback) rtprtxreceive_srcpad_probe, &receive_rtxdata, NULL);
+ sinkpad = gst_pad_get_peer (srcpad);
+ fail_if (sinkpad == NULL);
+ chk_3 = gst_consistency_checker_new (sinkpad);
+ gst_object_unref (sinkpad);
+ gst_object_unref (srcpad);
+
+ main_loop = g_main_loop_new (NULL, FALSE);
+ g_signal_connect (bus, "message::error", (GCallback) message_received, bin);
+ g_signal_connect (bus, "message::warning", (GCallback) message_received, bin);
+ g_signal_connect (bus, "message::eos", (GCallback) message_received, bin);
+
+ for (drop_every_n_packets = 2; drop_every_n_packets < 10;
+ drop_every_n_packets++) {
+ start_test_drop_and_check_results (bin, rtppayloader, rtprtxsend,
+ rtprtxreceive, &send_rtxdata, &receive_rtxdata, drop_every_n_packets);
+ }
+
+ /* cleanup */
+ g_main_loop_unref (main_loop);
+ gst_consistency_checker_free (chk_1);
+ gst_consistency_checker_free (chk_2);
+ gst_consistency_checker_free (chk_3);
+ gst_bus_remove_signal_watch (bus);
+ gst_object_unref (bus);
+ gst_object_unref (bin);
+}
+
+GST_END_TEST;
+
static Suite *
rtprtx_suite (void)
{
Suite *s = suite_create ("rtprtx");
TCase *tc_chain = tcase_create ("general");
+ tcase_set_timeout (tc_chain, 10000);
+
suite_add_tcase (s, tc_chain);
tcase_add_test (tc_chain, test_push_forward_seq);
+ tcase_add_test (tc_chain, test_drop_one_sender);
return s;
}