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tests: add unit-test for multiple missing packets

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Check if multiple missing packets generate retransmission events and that the
retranmission requests are canceled when the missing packet arrives.
This commit is contained in:
Wim Taymans 2013-09-20 10:55:03 +02:00
parent 5dc207948c
commit 2e3346eff9
1 changed files with 126 additions and 0 deletions
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126
tests/check/elements/rtpjitterbuffer.c
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@ -993,6 +993,131 @@ GST_START_TEST (test_rtx_expected_next)
GST_END_TEST;
GST_START_TEST (test_rtx_two_missing)
{
TestData data;
GstClockID id, tid;
GstBuffer *in_buf, *out_buf;
GstEvent *out_event;
gint jb_latency_ms = 200;
GstClockTime timeout = 20 * G_USEC_PER_SEC;
gint i;
GstRTPBuffer rtp = GST_RTP_BUFFER_INIT;
setup_testharness (&data);
g_object_set (data.jitter_buffer, "do-retransmission", TRUE, NULL);
g_object_set (data.jitter_buffer, "latency", jb_latency_ms, NULL);
g_object_set (data.jitter_buffer, "rtx-retry-period", 120, NULL);
gst_test_clock_set_time (GST_TEST_CLOCK (data.clock), 0);
/* push the first buffer in */
in_buf = generate_test_buffer (0 * GST_MSECOND, TRUE, 0, 0);
g_assert_cmpint (gst_pad_push (data.test_src_pad, in_buf), ==, GST_FLOW_OK);
gst_test_clock_set_time (GST_TEST_CLOCK (data.clock), 20 * GST_MSECOND);
/* put second buffer, the jitterbuffer should now know that the packet spacing
* is 20ms and should ask for retransmission of seqnum 2 at 60ms */
in_buf = generate_test_buffer (20 * GST_MSECOND, TRUE, 1, 160);
g_assert_cmpint (gst_pad_push (data.test_src_pad, in_buf), ==, GST_FLOW_OK);
/* push buffer 4, 2 and 3 are missing now, we should get retransmission events
* for 3 at 100ms*/
in_buf = generate_test_buffer (80 * GST_MSECOND, TRUE, 4, 4 * 160);
g_assert_cmpint (gst_pad_push (data.test_src_pad, in_buf), ==, GST_FLOW_OK);
/* wait for first retransmission request */
gst_test_clock_wait_for_next_pending_id (GST_TEST_CLOCK (data.clock), &id);
gst_test_clock_set_time (GST_TEST_CLOCK (data.clock), 60 * GST_MSECOND);
g_assert (gst_test_clock_process_next_clock_id (GST_TEST_CLOCK (data.clock))
== id);
/* we should have 2 events now, one for 2 and another for 3 */
out_event = g_async_queue_timeout_pop (data.src_event_queue, timeout);
g_assert (out_event != NULL);
verify_rtx_event (out_event, 2, 40 * GST_MSECOND, 20, 20 * GST_MSECOND);
out_event = g_async_queue_timeout_pop (data.src_event_queue, timeout);
g_assert (out_event != NULL);
verify_rtx_event (out_event, 3, 60 * GST_MSECOND, 0, 20 * GST_MSECOND);
/* now we wait for the next timeout */
gst_test_clock_wait_for_next_pending_id (GST_TEST_CLOCK (data.clock), &id);
gst_test_clock_set_time (GST_TEST_CLOCK (data.clock), 100 * GST_MSECOND);
tid = gst_test_clock_process_next_clock_id (GST_TEST_CLOCK (data.clock));
g_assert (id == tid);
/* we should have 2 events now, one for 2 and another for 3 */
out_event = g_async_queue_timeout_pop (data.src_event_queue, timeout);
g_assert (out_event != NULL);
verify_rtx_event (out_event, 2, 40 * GST_MSECOND, 60, 20 * GST_MSECOND);
out_event = g_async_queue_timeout_pop (data.src_event_queue, timeout);
g_assert (out_event != NULL);
verify_rtx_event (out_event, 3, 60 * GST_MSECOND, 40, 20 * GST_MSECOND);
/* make buffer 3 */
in_buf = generate_test_buffer (60 * GST_MSECOND, TRUE, 3, 3 * 160);
g_assert_cmpint (gst_pad_push (data.test_src_pad, in_buf), ==, GST_FLOW_OK);
/* make more buffers */
for (i = 5; i < 15; i++) {
in_buf = generate_test_buffer (i * 20 * GST_MSECOND, TRUE, i, i * 160);
g_assert_cmpint (gst_pad_push (data.test_src_pad, in_buf), ==, GST_FLOW_OK);
}
gst_test_clock_wait_for_next_pending_id (GST_TEST_CLOCK (data.clock), &id);
gst_test_clock_set_time (GST_TEST_CLOCK (data.clock), 140 * GST_MSECOND);
tid = gst_test_clock_process_next_clock_id (GST_TEST_CLOCK (data.clock));
g_assert (id == tid);
/* now we only get requests for 2 */
out_event = g_async_queue_timeout_pop (data.src_event_queue, timeout);
g_assert (out_event != NULL);
verify_rtx_event (out_event, 2, 40 * GST_MSECOND, 100, 20 * GST_MSECOND);
/* this is when buffer 0 deadline expires */
gst_test_clock_wait_for_next_pending_id (GST_TEST_CLOCK (data.clock), &id);
gst_test_clock_set_time (GST_TEST_CLOCK (data.clock), 200 * GST_MSECOND);
tid = gst_test_clock_process_next_clock_id (GST_TEST_CLOCK (data.clock));
g_assert (id == tid);
for (i = 0; i < 2; i++) {
GST_DEBUG ("popping %d", i);
out_buf = g_async_queue_timeout_pop (data.buf_queue, timeout);
g_assert (out_buf != NULL);
gst_rtp_buffer_map (out_buf, GST_MAP_READ, &rtp);
g_assert_cmpint (gst_rtp_buffer_get_seq (&rtp), ==, i);
gst_rtp_buffer_unmap (&rtp);
}
/* this is when 2 is lost */
gst_test_clock_wait_for_next_pending_id (GST_TEST_CLOCK (data.clock), &id);
gst_test_clock_set_time (GST_TEST_CLOCK (data.clock), 240 * GST_MSECOND);
tid = gst_test_clock_process_next_clock_id (GST_TEST_CLOCK (data.clock));
g_assert (id == tid);
/* we should now receive a packet-lost-event for buffer 2 */
out_event = g_async_queue_timeout_pop (data.sink_event_queue, timeout);
g_assert (out_event != NULL);
verify_lost_event (out_event, 2, 40 * GST_MSECOND, 20 * GST_MSECOND, FALSE);
/* verify that buffers made it through! */
for (i = 3; i < 15; i++) {
GST_DEBUG ("popping %d", i);
out_buf = g_async_queue_timeout_pop (data.buf_queue, timeout);
g_assert (out_buf != NULL);
gst_rtp_buffer_map (out_buf, GST_MAP_READ, &rtp);
g_assert_cmpint (gst_rtp_buffer_get_seq (&rtp), ==, i);
gst_rtp_buffer_unmap (&rtp);
}
/* should still have only seen 1 packet lost events */
g_assert_cmpint (data.lost_event_count, ==, 1);
destroy_testharness (&data);
}
GST_END_TEST;
static Suite *
rtpjitterbuffer_suite (void)
{
@ -1009,6 +1134,7 @@ rtpjitterbuffer_suite (void)
tcase_add_test (tc_chain, test_late_packets_still_makes_lost_events);
tcase_add_test (tc_chain, test_all_packets_are_timestamped_zero);
tcase_add_test (tc_chain, test_rtx_expected_next);
tcase_add_test (tc_chain, test_rtx_two_missing);
return s;
}