mirrors/gstreamer
mirrors/gstreamer
1
1
Fork 0
mirror of https://gitlab.freedesktop.org/gstreamer/gstreamer.git synced 2024-12-18 22:36:33 +00:00
Code Issues 1 Projects Releases Wiki Activity
gstreamer/tests/check/elements/rtpjitterbuffer.c
Olivier Crête 6530fa53f2 rtp jitterbuffer test: Test for queue filling
2019-02-11 23:41:14 +00:00

2325 lines
81 KiB
C
Raw Blame History

This file contains ambiguous Unicode characters

This file contains Unicode characters that might be confused with other characters. If you think that this is intentional, you can safely ignore this warning. Use the Escape button to reveal them.

/* GStreamer
*
* Copyright (C) 2009 Nokia Corporation and its subsidary(-ies)
* contact: <stefan.kost@nokia.com>
* Copyright (C) 2012 Cisco Systems, Inc
* Authors: Kelley Rogers <kelro@cisco.com>
* Havard Graff <hgraff@cisco.com>
* Copyright (C) 2013-2016 Pexip AS
* Stian Selnes <stian@pexip>
* Havard Graff <havard@pexip>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#include <gst/check/gstcheck.h>
#include <gst/check/gsttestclock.h>
#include <gst/check/gstharness.h>
#include <gst/rtp/gstrtpbuffer.h>
/* For ease of programming we use globals to keep refs for our floating
* src and sink pads we create; otherwise we always have to do get_pad,
* get_peer, and then remove references in every test function */
static GstPad *mysrcpad, *mysinkpad;
/* we also have a list of src buffers */
static GList *inbuffers = NULL;
static gint num_dropped = 0;
#define RTP_CAPS_STRING \
"application/x-rtp, " \
"media = (string)audio, " \
"payload = (int) 0, " \
"clock-rate = (int) 8000, " \
"encoding-name = (string)PCMU"
#define RTP_FRAME_SIZE 20
static GstStaticPadTemplate sinktemplate = GST_STATIC_PAD_TEMPLATE ("sink",
GST_PAD_SINK,
GST_PAD_ALWAYS,
GST_STATIC_CAPS ("application/x-rtp")
);
static GstStaticPadTemplate srctemplate = GST_STATIC_PAD_TEMPLATE ("src",
GST_PAD_SRC,
GST_PAD_ALWAYS,
GST_STATIC_CAPS ("application/x-rtp, "
"clock-rate = (int) [ 1, 2147483647 ]")
);
static void
buffer_dropped (gpointer data, GstMiniObject * obj)
{
GST_DEBUG ("dropping buffer %p", obj);
num_dropped++;
}
static GstElement *
setup_jitterbuffer (gint num_buffers)
{
GstElement *jitterbuffer;
GstClock *clock;
GstBuffer *buffer;
GstCaps *caps;
/* a 20 sample audio block (2,5 ms) generated with
* gst-launch audiotestsrc wave=silence blocksize=40 num-buffers=3 !
* "audio/x-raw,channels=1,rate=8000" ! mulawenc ! rtppcmupay !
* fakesink dump=1
*/
guint8 in[] = {
/* first 4 bytes are rtp-header, next 4 bytes are timestamp */
0x80, 0x80, 0x1c, 0x24, 0x46, 0xcd, 0xb7, 0x11, 0x3c, 0x3a, 0x7c, 0x5b,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff
};
GstClockTime ts = G_GUINT64_CONSTANT (0);
GstClockTime tso = gst_util_uint64_scale (RTP_FRAME_SIZE, GST_SECOND, 8000);
/*guint latency = GST_TIME_AS_MSECONDS (num_buffers * tso); */
gint i;
GST_DEBUG ("setup_jitterbuffer");
jitterbuffer = gst_check_setup_element ("rtpjitterbuffer");
/* we need a clock here */
clock = gst_system_clock_obtain ();
gst_element_set_clock (jitterbuffer, clock);
gst_object_unref (clock);
/* setup latency */
/* latency would be 7 for 3 buffers here, default is 200
g_object_set (G_OBJECT (jitterbuffer), "latency", latency, NULL);
GST_INFO_OBJECT (jitterbuffer, "set latency to %u ms", latency);
*/
mysrcpad = gst_check_setup_src_pad (jitterbuffer, &srctemplate);
mysinkpad = gst_check_setup_sink_pad (jitterbuffer, &sinktemplate);
gst_pad_set_active (mysrcpad, TRUE);
gst_pad_set_active (mysinkpad, TRUE);
/* create n buffers */
caps = gst_caps_from_string (RTP_CAPS_STRING);
gst_check_setup_events (mysrcpad, jitterbuffer, caps, GST_FORMAT_TIME);
gst_caps_unref (caps);
for (i = 0; i < num_buffers; i++) {
buffer = gst_buffer_new_and_alloc (sizeof (in));
gst_buffer_fill (buffer, 0, in, sizeof (in));
GST_BUFFER_DTS (buffer) = ts;
GST_BUFFER_PTS (buffer) = ts;
GST_BUFFER_DURATION (buffer) = tso;
gst_mini_object_weak_ref (GST_MINI_OBJECT (buffer), buffer_dropped, NULL);
GST_DEBUG ("created buffer: %p", buffer);
if (!i)
GST_BUFFER_FLAG_SET (buffer, GST_BUFFER_FLAG_DISCONT);
inbuffers = g_list_append (inbuffers, buffer);
/* hackish way to update the rtp header */
in[1] = 0x00;
in[3]++; /* seqnumber */
in[7] += RTP_FRAME_SIZE; /* inc. timestamp with framesize */
ts += tso;
}
num_dropped = 0;
return jitterbuffer;
}
static GstStateChangeReturn
start_jitterbuffer (GstElement * jitterbuffer)
{
GstStateChangeReturn ret;
GstClockTime now;
GstClock *clock;
clock = gst_element_get_clock (jitterbuffer);
now = gst_clock_get_time (clock);
gst_object_unref (clock);
gst_element_set_base_time (jitterbuffer, now);
ret = gst_element_set_state (jitterbuffer, GST_STATE_PLAYING);
return ret;
}
static void
cleanup_jitterbuffer (GstElement * jitterbuffer)
{
GST_DEBUG ("cleanup_jitterbuffer");
g_list_foreach (buffers, (GFunc) gst_mini_object_unref, NULL);
g_list_free (buffers);
buffers = NULL;
g_list_free (inbuffers);
inbuffers = NULL;
gst_pad_set_active (mysrcpad, FALSE);
gst_pad_set_active (mysinkpad, FALSE);
gst_element_set_state (jitterbuffer, GST_STATE_NULL);
gst_check_teardown_src_pad (jitterbuffer);
gst_check_teardown_sink_pad (jitterbuffer);
gst_check_teardown_element (jitterbuffer);
}
static void
check_jitterbuffer_results (GstElement * jitterbuffer, gint num_buffers)
{
GstBuffer *buffer;
GList *node;
GstClockTime ts = G_GUINT64_CONSTANT (0);
GstClockTime tso = gst_util_uint64_scale (RTP_FRAME_SIZE, GST_SECOND, 8000);
GstMapInfo map;
guint16 prev_sn = 0, cur_sn;
guint32 prev_ts = 0, cur_ts;
/* sleep for twice the latency */
g_usleep (400 * 1000);
GST_INFO ("of %d buffer %d/%d received/dropped", num_buffers,
g_list_length (buffers), num_dropped);
/* if this fails, not all buffers have been processed */
fail_unless_equals_int ((g_list_length (buffers) + num_dropped), num_buffers);
/* check the buffer list */
fail_unless_equals_int (g_list_length (buffers), num_buffers);
for (node = buffers; node; node = g_list_next (node)) {
fail_if ((buffer = (GstBuffer *) node->data) == NULL);
fail_if (GST_BUFFER_PTS (buffer) != ts);
fail_if (GST_BUFFER_DTS (buffer) != ts);
gst_buffer_map (buffer, &map, GST_MAP_READ);
cur_sn = ((guint16) map.data[2] << 8) | map.data[3];
cur_ts = ((guint32) map.data[4] << 24) | ((guint32) map.data[5] << 16) |
((guint32) map.data[6] << 8) | map.data[7];
gst_buffer_unmap (buffer, &map);
if (node != buffers) {
fail_unless (cur_sn > prev_sn);
fail_unless (cur_ts > prev_ts);
prev_sn = cur_sn;
prev_ts = cur_ts;
}
ts += tso;
}
}
GST_START_TEST (test_push_forward_seq)
{
GstElement *jitterbuffer;
const guint num_buffers = 3;
GstBuffer *buffer;
GList *node;
jitterbuffer = setup_jitterbuffer (num_buffers);
fail_unless (start_jitterbuffer (jitterbuffer)
== GST_STATE_CHANGE_SUCCESS, "could not set to playing");
/* push buffers: 0,1,2, */
for (node = inbuffers; node; node = g_list_next (node)) {
buffer = (GstBuffer *) node->data;
fail_unless (gst_pad_push (mysrcpad, buffer) == GST_FLOW_OK);
}
/* check the buffer list */
check_jitterbuffer_results (jitterbuffer, num_buffers);
/* cleanup */
cleanup_jitterbuffer (jitterbuffer);
}
GST_END_TEST;
GST_START_TEST (test_push_backward_seq)
{
GstElement *jitterbuffer;
const guint num_buffers = 4;
GstBuffer *buffer;
GList *node;
jitterbuffer = setup_jitterbuffer (num_buffers);
fail_unless (start_jitterbuffer (jitterbuffer)
== GST_STATE_CHANGE_SUCCESS, "could not set to playing");
/* push buffers: 0,3,2,1 */
buffer = (GstBuffer *) inbuffers->data;
fail_unless (gst_pad_push (mysrcpad, buffer) == GST_FLOW_OK);
for (node = g_list_last (inbuffers); node != inbuffers;
node = g_list_previous (node)) {
buffer = (GstBuffer *) node->data;
fail_unless (gst_pad_push (mysrcpad, buffer) == GST_FLOW_OK);
}
/* check the buffer list */
check_jitterbuffer_results (jitterbuffer, num_buffers);
/* cleanup */
cleanup_jitterbuffer (jitterbuffer);
}
GST_END_TEST;
GST_START_TEST (test_push_unordered)
{
GstElement *jitterbuffer;
const guint num_buffers = 4;
GstBuffer *buffer;
jitterbuffer = setup_jitterbuffer (num_buffers);
fail_unless (start_jitterbuffer (jitterbuffer)
== GST_STATE_CHANGE_SUCCESS, "could not set to playing");
/* push buffers; 0,2,1,3 */
buffer = (GstBuffer *) inbuffers->data;
fail_unless (gst_pad_push (mysrcpad, buffer) == GST_FLOW_OK);
buffer = g_list_nth_data (inbuffers, 2);
fail_unless (gst_pad_push (mysrcpad, buffer) == GST_FLOW_OK);
buffer = g_list_nth_data (inbuffers, 1);
fail_unless (gst_pad_push (mysrcpad, buffer) == GST_FLOW_OK);
buffer = g_list_nth_data (inbuffers, 3);
fail_unless (gst_pad_push (mysrcpad, buffer) == GST_FLOW_OK);
/* check the buffer list */
check_jitterbuffer_results (jitterbuffer, num_buffers);
/* cleanup */
cleanup_jitterbuffer (jitterbuffer);
}
GST_END_TEST;
gboolean is_eos;
static gboolean
eos_event_function (GstPad * pad, GstObject * parent, GstEvent * event)
{
if (GST_EVENT_TYPE (event) == GST_EVENT_EOS) {
g_mutex_lock (&check_mutex);
is_eos = TRUE;
g_cond_signal (&check_cond);
g_mutex_unlock (&check_mutex);
}
return TRUE;
}
GST_START_TEST (test_push_eos)
{
GstElement *jitterbuffer;
const guint num_buffers = 5;
GstBuffer *buffer;
GList *node;
GstStructure *stats;
guint64 pushed, lost, late, duplicates;
int n = 0;
is_eos = FALSE;
jitterbuffer = setup_jitterbuffer (num_buffers);
gst_pad_set_event_function (mysinkpad, eos_event_function);
g_object_set (jitterbuffer, "latency", 1, NULL);
fail_unless (start_jitterbuffer (jitterbuffer)
== GST_STATE_CHANGE_SUCCESS, "could not set to playing");
/* push buffers: 0,1,2, */
for (node = inbuffers; node; node = g_list_next (node)) {
n++;
/* Skip 1 */
if (n == 2) {
continue;
}
buffer = (GstBuffer *) node->data;
fail_unless (gst_pad_push (mysrcpad, buffer) == GST_FLOW_OK);
}
gst_pad_push_event (mysrcpad, gst_event_new_eos ());
g_mutex_lock (&check_mutex);
while (!is_eos)
g_cond_wait (&check_cond, &check_mutex);
g_mutex_unlock (&check_mutex);
fail_unless_equals_int (g_list_length (buffers), num_buffers - 1);
/* Verify statistics */
g_object_get (jitterbuffer, "stats", &stats, NULL);
gst_structure_get (stats, "num-pushed", G_TYPE_UINT64, &pushed,
"num-lost", G_TYPE_UINT64, &lost,
"num-late", G_TYPE_UINT64, &late,
"num-duplicates", G_TYPE_UINT64, &duplicates, NULL);
fail_unless_equals_int (pushed, g_list_length (inbuffers) - 1);
fail_unless_equals_int (lost, 1);
fail_unless_equals_int (late, 0);
fail_unless_equals_int (duplicates, 0);
gst_structure_free (stats);
/* cleanup */
cleanup_jitterbuffer (jitterbuffer);
}
GST_END_TEST;
GST_START_TEST (test_basetime)
{
GstElement *jitterbuffer;
const guint num_buffers = 3;
GstBuffer *buffer;
GList *node;
GstClockTime tso = gst_util_uint64_scale (RTP_FRAME_SIZE, GST_SECOND, 8000);
jitterbuffer = setup_jitterbuffer (num_buffers);
fail_unless (start_jitterbuffer (jitterbuffer)
== GST_STATE_CHANGE_SUCCESS, "could not set to playing");
/* push buffers: 2,1,0 */
for (node = g_list_last (inbuffers); node; node = g_list_previous (node)) {
buffer = (GstBuffer *) node->data;
fail_unless (gst_pad_push (mysrcpad, buffer) == GST_FLOW_OK);
}
/* sleep for twice the latency */
g_usleep (400 * 1000);
/* if this fails, not all buffers have been processed */
fail_unless_equals_int ((g_list_length (buffers) + num_dropped), num_buffers);
buffer = (GstBuffer *) buffers->data;
fail_unless (GST_BUFFER_DTS (buffer) != (num_buffers * tso));
fail_unless (GST_BUFFER_PTS (buffer) != (num_buffers * tso));
/* cleanup */
cleanup_jitterbuffer (jitterbuffer);
}
GST_END_TEST;
static GstCaps *
request_pt_map (GstElement * jitterbuffer, guint pt)
{
fail_unless (pt == 0);
return gst_caps_from_string (RTP_CAPS_STRING);
}
GST_START_TEST (test_clear_pt_map)
{
GstElement *jitterbuffer;
const guint num_buffers = 10;
gint i;
GstBuffer *buffer;
GList *node;
jitterbuffer = setup_jitterbuffer (num_buffers);
fail_unless (start_jitterbuffer (jitterbuffer)
== GST_STATE_CHANGE_SUCCESS, "could not set to playing");
g_signal_connect (jitterbuffer, "request-pt-map", (GCallback)
request_pt_map, NULL);
/* push buffers: 0,1,2, */
for (node = inbuffers, i = 0; node && i < 3; node = g_list_next (node), i++) {
buffer = (GstBuffer *) node->data;
fail_unless (gst_pad_push (mysrcpad, buffer) == GST_FLOW_OK);
}
g_usleep (400 * 1000);
g_signal_emit_by_name (jitterbuffer, "clear-pt-map", NULL);
for (; node && i < 10; node = g_list_next (node), i++) {
buffer = (GstBuffer *) node->data;
fail_unless (gst_pad_push (mysrcpad, buffer) == GST_FLOW_OK);
}
/* check the buffer list */
check_jitterbuffer_results (jitterbuffer, num_buffers);
/* cleanup */
cleanup_jitterbuffer (jitterbuffer);
}
GST_END_TEST;
#define TEST_BUF_CLOCK_RATE 8000
#define TEST_BUF_PT 0
#define TEST_BUF_SSRC 0x01BADBAD
#define TEST_BUF_MS 20
#define TEST_BUF_DURATION (TEST_BUF_MS * GST_MSECOND)
#define TEST_BUF_SIZE (64000 * TEST_BUF_MS / 1000)
#define TEST_RTP_TS_DURATION (TEST_BUF_CLOCK_RATE * TEST_BUF_MS / 1000)
static GstCaps *
generate_caps (void)
{
return gst_caps_new_simple ("application/x-rtp",
"media", G_TYPE_STRING, "audio",
"clock-rate", G_TYPE_INT, TEST_BUF_CLOCK_RATE,
"encoding-name", G_TYPE_STRING, "TEST",
"payload", G_TYPE_INT, TEST_BUF_PT,
"ssrc", G_TYPE_UINT, TEST_BUF_SSRC, NULL);
}
static GstBuffer *
generate_test_buffer_full (GstClockTime dts, guint seq_num, guint32 rtp_ts)
{
GstBuffer *buf;
guint8 *payload;
guint i;
GstRTPBuffer rtp = GST_RTP_BUFFER_INIT;
buf = gst_rtp_buffer_new_allocate (TEST_BUF_SIZE, 0, 0);
GST_BUFFER_DTS (buf) = dts;
gst_rtp_buffer_map (buf, GST_MAP_READWRITE, &rtp);
gst_rtp_buffer_set_payload_type (&rtp, TEST_BUF_PT);
gst_rtp_buffer_set_seq (&rtp, seq_num);
gst_rtp_buffer_set_timestamp (&rtp, rtp_ts);
gst_rtp_buffer_set_ssrc (&rtp, TEST_BUF_SSRC);
payload = gst_rtp_buffer_get_payload (&rtp);
for (i = 0; i < TEST_BUF_SIZE; i++)
payload[i] = 0xff;
gst_rtp_buffer_unmap (&rtp);
return buf;
}
static GstBuffer *
generate_test_buffer (guint seq_num)
{
return generate_test_buffer_full (seq_num * TEST_BUF_DURATION,
seq_num, seq_num * TEST_RTP_TS_DURATION);
}
static GstBuffer *
generate_test_buffer_rtx (GstClockTime dts, guint seq_num)
{
GstBuffer *buffer = generate_test_buffer_full (dts, seq_num,
seq_num * TEST_RTP_TS_DURATION);
GST_BUFFER_FLAG_SET (buffer, GST_RTP_BUFFER_FLAG_RETRANSMISSION);
return buffer;
}
static void
push_test_buffer (GstHarness * h, guint seq_num)
{
gst_harness_set_time (h, seq_num * TEST_BUF_DURATION);
fail_unless_equals_int (GST_FLOW_OK, gst_harness_push (h,
generate_test_buffer (seq_num)));
}
static gint
get_rtp_seq_num (GstBuffer * buf)
{
GstRTPBuffer rtp = GST_RTP_BUFFER_INIT;
gint seq;
gst_rtp_buffer_map (buf, GST_MAP_READ, &rtp);
seq = gst_rtp_buffer_get_seq (&rtp);
gst_rtp_buffer_unmap (&rtp);
return seq;
}
#define verify_lost_event(h, exp_seq, exp_ts, exp_dur) \
G_STMT_START { \
GstEvent *_event; \
const GstStructure *_s; \
const GValue *_value; \
guint _seq; \
GstClockTime _ts; \
GstClockTime _dur; \
_event = gst_harness_pull_event (h); \
fail_unless (_event != NULL); \
_s = gst_event_get_structure (_event); \
fail_unless (_s != NULL); \
fail_unless (gst_structure_get_uint (_s, "seqnum", &_seq)); \
_value = gst_structure_get_value (_s, "timestamp"); \
fail_unless (_value && G_VALUE_HOLDS_UINT64 (_value)); \
_ts = g_value_get_uint64 (_value); \
_value = gst_structure_get_value (_s, "duration"); \
fail_unless (_value && G_VALUE_HOLDS_UINT64 (_value)); \
_dur = g_value_get_uint64 (_value); \
fail_unless_equals_int ((guint16)(exp_seq), _seq); \
fail_unless_equals_uint64 (exp_ts, _ts); \
fail_unless_equals_uint64 (exp_dur, _dur); \
gst_event_unref (_event); \
} G_STMT_END
#define verify_rtx_event(h, exp_seq, exp_ts, exp_delay, exp_spacing) \
G_STMT_START { \
GstEvent *_event; \
const GstStructure *_s; \
const GValue *_value; \
guint _seq; \
GstClockTime _ts; \
guint _delay; \
GstClockTime _spacing; \
_event = gst_harness_pull_upstream_event (h); \
fail_unless (_event != NULL); \
_s = gst_event_get_structure (_event); \
fail_unless (_s != NULL); \
fail_unless (gst_structure_get_uint (_s, "seqnum", &_seq)); \
_value = gst_structure_get_value (_s, "running-time"); \
fail_unless (_value && G_VALUE_HOLDS_UINT64 (_value)); \
_ts = g_value_get_uint64 (_value); \
fail_unless (gst_structure_get_uint (_s, "delay", &_delay)); \
_value = gst_structure_get_value (_s, "packet-spacing"); \
fail_unless (_value && G_VALUE_HOLDS_UINT64 (_value)); \
_spacing = g_value_get_uint64 (_value); \
fail_unless_equals_int ((guint16)(exp_seq), _seq); \
fail_unless_equals_uint64 (exp_ts, _ts); \
fail_unless_equals_int (exp_delay, _delay); \
fail_unless_equals_uint64 (exp_spacing, _spacing); \
gst_event_unref (_event); \
} G_STMT_END
static gboolean
verify_jb_stats (GstElement * jb, GstStructure * expected)
{
gboolean ret;
GstStructure *actual;
g_object_get (jb, "stats", &actual, NULL);
ret = gst_structure_is_subset (actual, expected);
if (!ret) {
gchar *e_str = gst_structure_to_string (expected);
gchar *a_str = gst_structure_to_string (actual);
fail_unless (ret, "%s is not a subset of %s", e_str, a_str);
g_free (e_str);
g_free (a_str);
}
gst_structure_free (expected);
gst_structure_free (actual);
return ret;
}
static guint
construct_deterministic_initial_state (GstHarness * h, gint latency_ms)
{
guint next_seqnum = latency_ms / TEST_BUF_MS + 1;
guint seqnum;
gint i;
g_assert (latency_ms % TEST_BUF_MS == 0);
gst_harness_set_src_caps (h, generate_caps ());
g_object_set (h->element, "latency", latency_ms, NULL);
/* When the first packet arrives in the jitterbuffer, it will create a
* timeout for this packet equal to the latency of the jitterbuffer.
* This is known as DEADLINE internally, and is meant to allow the stream
* to buffer a bit before starting to push it out, to get some ideas about
* the nature of the stream. (packetspacing, jitter etc.)
*
* When writing tests using the test-clock, it it hence important to know
* that by simply advancing the clock to this timeout, you are basically
* describing a stream that had one initial packet, and then nothing at all
* for the duration of the latency (100ms in this test), which is not a very
* usual scenario.
*
* Instead, a pattern used throughout this test-suite, is to keep the buffers
* arriving at their optimal time, until the DEADLINE is reached, and that
* then becomes the "starting-point" for the test, because at this time
* there should now be no waiting timers (unless using rtx) and we have
* a "clean" state to craft the test from.
*/
/* Packet 0 arrives at time 0ms, Packet 5 arrives at time 100ms */
for (seqnum = 0; seqnum < next_seqnum; seqnum++) {
push_test_buffer (h, seqnum);
gst_harness_wait_for_clock_id_waits (h, 1, 60);
}
/* We release the DEADLINE timer for packet 0, verify the time is indeed
* @latency_ms (100ms) and pull out all the buffers that have been released,
* and verify their PTS and sequence numbers.
*/
gst_harness_crank_single_clock_wait (h);
fail_unless_equals_int64 (latency_ms * GST_MSECOND,
gst_clock_get_time (GST_ELEMENT_CLOCK (h->element)));
for (seqnum = 0; seqnum < next_seqnum; seqnum++) {
GstBuffer *buf = gst_harness_pull (h);
fail_unless_equals_uint64 (seqnum * TEST_BUF_DURATION,
GST_BUFFER_PTS (buf));
fail_unless_equals_int (seqnum, get_rtp_seq_num (buf));
gst_buffer_unref (buf);
}
/* drop GstEventStreamStart & GstEventCaps & GstEventSegment */
for (i = 0; i < 3; i++)
gst_event_unref (gst_harness_pull_event (h));
/* drop reconfigure event */
gst_event_unref (gst_harness_pull_upstream_event (h));
/* Verify that at this point our queues are empty */
fail_unless_equals_int (0, gst_harness_buffers_in_queue (h));
fail_unless_equals_int (0, gst_harness_events_in_queue (h));
return next_seqnum;
}
GST_START_TEST (test_lost_event)
{
GstHarness *h = gst_harness_new ("rtpjitterbuffer");
GstBuffer *buf;
gint latency_ms = 100;
guint next_seqnum;
guint missing_seqnum;
g_object_set (h->element, "do-lost", TRUE, NULL);
next_seqnum = construct_deterministic_initial_state (h, latency_ms);
/* We will now create a gap in the stream, by skipping one sequence-number,
* and push the following packet.
*/
missing_seqnum = next_seqnum;
next_seqnum += 1;
push_test_buffer (h, next_seqnum);
/* This packet (@next_seqnum) will now be held back, awaiting the missing one,
* verify that this is the case:
*/
fail_unless_equals_int (0, gst_harness_buffers_in_queue (h));
fail_unless_equals_int (0, gst_harness_events_in_queue (h));
/* The lost-timeout for the missing packet will now be its pts + latency, so
* now we will simply crank the clock to advance to this point in time, and
* check that we get a lost-event, as well as the last packet we pushed in.
*/
gst_harness_crank_single_clock_wait (h);
verify_lost_event (h, missing_seqnum,
missing_seqnum * TEST_BUF_DURATION, TEST_BUF_DURATION);
buf = gst_harness_pull (h);
fail_unless_equals_uint64 (next_seqnum * TEST_BUF_DURATION,
GST_BUFFER_PTS (buf));
fail_unless_equals_int (next_seqnum, get_rtp_seq_num (buf));
gst_buffer_unref (buf);
fail_unless (verify_jb_stats (h->element,
gst_structure_new ("application/x-rtp-jitterbuffer-stats",
"num-pushed", G_TYPE_UINT64, (guint64) next_seqnum,
"num-lost", G_TYPE_UINT64, (guint64) 1, NULL)));
gst_harness_teardown (h);
}
GST_END_TEST;
GST_START_TEST (test_only_one_lost_event_on_large_gaps)
{
GstHarness *h = gst_harness_new ("rtpjitterbuffer");
GstTestClock *testclock;
GstBuffer *out_buf;
guint next_seqnum;
gint latency_ms = 200;
gint num_lost_events = latency_ms / TEST_BUF_MS;
gint i;
testclock = gst_harness_get_testclock (h);
/* Need to set max-misorder-time and max-dropout-time to 0 so the
* jitterbuffer does not base them on packet rate calculations.
* If it does, out gap is big enough to be considered a new stream and
* we wait for a few consecutive packets just to be sure
*/
g_object_set (h->element, "do-lost", TRUE,
"max-misorder-time", 0, "max-dropout-time", 0, NULL);
next_seqnum = construct_deterministic_initial_state (h, latency_ms);
/* move time ahead to just before 10 seconds */
gst_harness_set_time (h, 10 * GST_SECOND - 1);
/* check that we have no pending waits */
fail_unless_equals_int (0, gst_test_clock_peek_id_count (testclock));
/* a buffer now arrives perfectly on time */
fail_unless_equals_int (GST_FLOW_OK,
gst_harness_push (h, generate_test_buffer (500)));
/* release the wait, advancing the clock to 10 sec */
fail_unless (gst_harness_crank_single_clock_wait (h));
/* we should now receive a packet-lost-event for buffers 11 through 489 ... */
verify_lost_event (h, next_seqnum,
next_seqnum * TEST_BUF_DURATION, TEST_BUF_DURATION * (490 - next_seqnum));
/* ... as well as 490 (since at 10 sec 490 is too late) */
verify_lost_event (h, 490, 490 * TEST_BUF_DURATION, TEST_BUF_DURATION);
/* we get as many lost events as the the number of *
* buffers the jitterbuffer is able to wait for */
for (i = 1; i < num_lost_events; i++) {
fail_unless (gst_harness_crank_single_clock_wait (h));
verify_lost_event (h, 490 + i, (490 + i) * TEST_BUF_DURATION,
TEST_BUF_DURATION);
}
/* and then the buffer is released */
out_buf = gst_harness_pull (h);
fail_unless (GST_BUFFER_FLAG_IS_SET (out_buf, GST_BUFFER_FLAG_DISCONT));
fail_unless_equals_int (500, get_rtp_seq_num (out_buf));
fail_unless_equals_uint64 (10 * GST_SECOND, GST_BUFFER_DTS (out_buf));
fail_unless_equals_uint64 (10 * GST_SECOND, GST_BUFFER_PTS (out_buf));
gst_buffer_unref (out_buf);
fail_unless (verify_jb_stats (h->element,
gst_structure_new ("application/x-rtp-jitterbuffer-stats",
"num-lost", G_TYPE_UINT64, (guint64) 489, NULL)));
gst_object_unref (testclock);
gst_harness_teardown (h);
}
GST_END_TEST;
GST_START_TEST (test_two_lost_one_arrives_in_time)
{
GstHarness *h = gst_harness_new ("rtpjitterbuffer");
GstTestClock *testclock;
GstClockID id;
GstBuffer *buf;
gint latency_ms = 100;
guint next_seqnum;
guint first_missing;
guint second_missing;
guint current_arrived;
testclock = gst_harness_get_testclock (h);
g_object_set (h->element, "do-lost", TRUE, NULL);
next_seqnum = construct_deterministic_initial_state (h, latency_ms);
/* hop over 2 packets and make another one (gap of 2) */
first_missing = next_seqnum;
second_missing = next_seqnum + 1;
current_arrived = next_seqnum + 2;
push_test_buffer (h, current_arrived);
/* verify that the jitterbuffer now wait for the latest moment it can push the
* @first_missing packet out.
*/
gst_test_clock_wait_for_next_pending_id (testclock, &id);
fail_unless_equals_uint64 (first_missing * TEST_BUF_DURATION +
latency_ms * GST_MSECOND, gst_clock_id_get_time (id));
gst_clock_id_unref (id);
/* let the time expire... */
fail_unless (gst_harness_crank_single_clock_wait (h));
/* we should now receive a packet-lost-event */
verify_lost_event (h, first_missing,
first_missing * TEST_BUF_DURATION, TEST_BUF_DURATION);
/* @second_missing now arrives just in time */
fail_unless_equals_int (GST_FLOW_OK,
gst_harness_push (h, generate_test_buffer (second_missing)));
/* verify that @second_missing made it through! */
buf = gst_harness_pull (h);
fail_unless (GST_BUFFER_FLAG_IS_SET (buf, GST_BUFFER_FLAG_DISCONT));
fail_unless_equals_int (second_missing, get_rtp_seq_num (buf));
gst_buffer_unref (buf);
/* and see that @current_arrived now also is pushed */
buf = gst_harness_pull (h);
fail_unless (!GST_BUFFER_FLAG_IS_SET (buf, GST_BUFFER_FLAG_DISCONT));
fail_unless_equals_int (current_arrived, get_rtp_seq_num (buf));
gst_buffer_unref (buf);
fail_unless (verify_jb_stats (h->element,
gst_structure_new ("application/x-rtp-jitterbuffer-stats",
"num-pushed", G_TYPE_UINT64, (guint64) next_seqnum + 2,
"num-lost", G_TYPE_UINT64, (guint64) 1, NULL)));
gst_object_unref (testclock);
gst_harness_teardown (h);
}
GST_END_TEST;
GST_START_TEST (test_late_packets_still_makes_lost_events)
{
GstHarness *h = gst_harness_new ("rtpjitterbuffer");
GstBuffer *out_buf;
gint latency_ms = 100;
guint next_seqnum;
guint seqnum;
GstClockTime now;
g_object_set (h->element, "do-lost", TRUE, NULL);
next_seqnum = construct_deterministic_initial_state (h, latency_ms);
/* jump 10 seconds forward in time */
now = 10 * GST_SECOND;
gst_harness_set_time (h, now);
/* push a packet with a gap of 2, that now is very late */
seqnum = next_seqnum + 2;
fail_unless_equals_int (GST_FLOW_OK, gst_harness_push (h,
generate_test_buffer_full (now,
seqnum, seqnum * TEST_RTP_TS_DURATION)));
/* we should now receive packet-lost-events for the gap
* FIXME: The timeout and duration here are a bit crap...
*/
verify_lost_event (h, next_seqnum, 3400 * GST_MSECOND, 6500 * GST_MSECOND);
verify_lost_event (h, next_seqnum + 1,
9900 * GST_MSECOND, 3300 * GST_MSECOND);
/* verify that packet @seqnum made it through! */
out_buf = gst_harness_pull (h);
fail_unless (GST_BUFFER_FLAG_IS_SET (out_buf, GST_BUFFER_FLAG_DISCONT));
fail_unless_equals_int (seqnum, get_rtp_seq_num (out_buf));
gst_buffer_unref (out_buf);
fail_unless (verify_jb_stats (h->element,
gst_structure_new ("application/x-rtp-jitterbuffer-stats",
"num-pushed", G_TYPE_UINT64, (guint64) next_seqnum + 1,
"num-lost", G_TYPE_UINT64, (guint64) 2, NULL)));
gst_harness_teardown (h);
}
GST_END_TEST;
GST_START_TEST (test_num_late_when_considered_lost_arrives)
{
GstHarness *h = gst_harness_new ("rtpjitterbuffer");
gboolean do_lost = __i__ != 0;
gint latency_ms = 100;
guint next_seqnum;
g_object_set (h->element, "do-lost", do_lost, NULL);
next_seqnum = construct_deterministic_initial_state (h, latency_ms);
/* gap of 1 */
push_test_buffer (h, next_seqnum + 1);
/* crank to trigger lost-event */
gst_harness_crank_single_clock_wait (h);
if (do_lost) {
/* we should now receive packet-lost-events for the missing packet */
verify_lost_event (h, next_seqnum,
next_seqnum * TEST_BUF_DURATION, TEST_BUF_DURATION);
}
/* pull out the pushed packet */
gst_buffer_unref (gst_harness_pull (h));
/* we have one lost packet in the stats */
fail_unless (verify_jb_stats (h->element,
gst_structure_new ("application/x-rtp-jitterbuffer-stats",
"num-pushed", G_TYPE_UINT64, (guint64) next_seqnum + 1,
"num-lost", G_TYPE_UINT64, (guint64) 1,
"num-late", G_TYPE_UINT64, (guint64) 0, NULL)));
/* the missing packet now arrives (too late) */
fail_unless_equals_int (GST_FLOW_OK,
gst_harness_push (h, generate_test_buffer (next_seqnum)));
/* and this increments num-late */
fail_unless (verify_jb_stats (h->element,
gst_structure_new ("application/x-rtp-jitterbuffer-stats",
"num-pushed", G_TYPE_UINT64, (guint64) next_seqnum + 1,
"num-lost", G_TYPE_UINT64, (guint64) 1,
"num-late", G_TYPE_UINT64, (guint64) 1, NULL)));
gst_harness_teardown (h);
}
GST_END_TEST;
GST_START_TEST (test_lost_event_uses_pts)
{
GstHarness *h = gst_harness_new ("rtpjitterbuffer");
GstClockTime now;
gint latency_ms = 100;
guint next_seqnum;
guint lost_seqnum;
g_object_set (h->element, "do-lost", TRUE, NULL);
next_seqnum = construct_deterministic_initial_state (h, latency_ms);
/* hop over 1 packets and make another one (gap of 1), but due to
network delays, this packets is also grossly late */
lost_seqnum = next_seqnum;
next_seqnum += 1;
/* advance the clock to the latest time packet @next_seqnum could arrive */
now = next_seqnum * TEST_BUF_DURATION + latency_ms * GST_MSECOND;
gst_harness_set_time (h, now);
gst_harness_push (h, generate_test_buffer_full (now, next_seqnum,
next_seqnum * TEST_RTP_TS_DURATION));
/* we should now have received a packet-lost-event for buffer 3 */
verify_lost_event (h, lost_seqnum,
lost_seqnum * TEST_BUF_DURATION, TEST_BUF_DURATION);
/* and pull out packet 4 */
gst_buffer_unref (gst_harness_pull (h));
fail_unless (verify_jb_stats (h->element,
gst_structure_new ("application/x-rtp-jitterbuffer-stats",
"num-pushed", G_TYPE_UINT64, (guint64) next_seqnum,
"num-lost", G_TYPE_UINT64, (guint64) 1, NULL)));
gst_harness_teardown (h);
}
GST_END_TEST;
GST_START_TEST (test_lost_event_with_backwards_rtptime)
{
GstHarness *h = gst_harness_new ("rtpjitterbuffer");
gint latency_ms = 40;
g_object_set (h->element, "do-lost", TRUE, NULL);
construct_deterministic_initial_state (h, latency_ms);
/*
* For video using B-frames, an expected sequence
* could be like this:
* (I = I-frame, P = P-frame, B = B-frame)
* ___ ___ ___ ___ ___
* ... | 3 | | 4 | | 5 | | 6 | | 7 |
* ––– ––– ––– ––– –––
* rtptime: 3(I) 5(P) 5(P) 4(B) 6(P)
* arrival(dts): 3 5 5 5 6
*
* Notice here that packet 6 (the B frame) make
* the rtptime go backwards.
*
* But we get this:
* ___ ___ _ _ ___ ___
* ... | 3 | | 4 | | | | 6 | | 7 |
* ––– ––– - - ––– –––
* rtptime: 3(I) 5(P) 4(B) 6(P)
* arrival(dts): 3 5 5 6
*
*/
/* seqnum 3 */
push_test_buffer (h, 3);
gst_buffer_unref (gst_harness_pull (h));
/* seqnum 4, arriving at time 5 with rtptime 5 */
gst_harness_push (h,
generate_test_buffer_full (5 * TEST_BUF_DURATION,
4, 5 * TEST_RTP_TS_DURATION));
gst_buffer_unref (gst_harness_pull (h));
/* seqnum 6, arriving at time 5 with rtptime 4,
making a gap for missing seqnum 5 */
gst_harness_push (h,
generate_test_buffer_full (5 * TEST_BUF_DURATION,
6, 4 * TEST_RTP_TS_DURATION));
/* seqnum 7, arriving at time 6 with rtptime 6 */
gst_harness_push (h,
generate_test_buffer_full (6 * TEST_BUF_DURATION,
7, 6 * TEST_RTP_TS_DURATION));
/* we should now have received a packet-lost-event for seqnum 5,
with time 5 and 0 duration */
gst_harness_crank_single_clock_wait (h);
verify_lost_event (h, 5, 5 * TEST_BUF_DURATION, 0);
/* and pull out 6 and 7 */
gst_buffer_unref (gst_harness_pull (h));
gst_buffer_unref (gst_harness_pull (h));
fail_unless (verify_jb_stats (h->element,
gst_structure_new ("application/x-rtp-jitterbuffer-stats",
"num-pushed", G_TYPE_UINT64, (guint64) 7,
"num-lost", G_TYPE_UINT64, (guint64) 1, NULL)));
gst_harness_teardown (h);
}
GST_END_TEST;
GST_START_TEST (test_all_packets_are_timestamped_zero)
{
GstHarness *h = gst_harness_new ("rtpjitterbuffer");
GstBuffer *out_buf;
gint jb_latency_ms = 100;
gint i, b;
gst_harness_set_src_caps (h, generate_caps ());
g_object_set (h->element, "do-lost", TRUE, "latency", jb_latency_ms, NULL);
/* advance the clock with 10 seconds */
gst_harness_set_time (h, 10 * GST_SECOND);
/* push the first buffer through */
gst_buffer_unref (gst_harness_push_and_pull (h, generate_test_buffer (0)));
/* push some buffers in, all timestamped 0 */
for (b = 1; b < 3; b++) {
fail_unless_equals_int (GST_FLOW_OK,
gst_harness_push (h,
generate_test_buffer_full (0 * GST_MSECOND, b, 0)));
/* check for the buffer coming out that was pushed in */
out_buf = gst_harness_pull (h);
fail_unless_equals_uint64 (0, GST_BUFFER_DTS (out_buf));
fail_unless_equals_uint64 (0, GST_BUFFER_PTS (out_buf));
gst_buffer_unref (out_buf);
}
/* hop over 2 packets and make another one (gap of 2) */
b = 5;
fail_unless_equals_int (GST_FLOW_OK,
gst_harness_push (h, generate_test_buffer_full (0 * GST_MSECOND, b, 0)));
/* drop GstEventStreamStart & GstEventCaps & GstEventSegment */
for (i = 0; i < 3; i++)
gst_event_unref (gst_harness_pull_event (h));
/* we should now receive packet-lost-events for buffer 3 and 4 */
verify_lost_event (h, 3, 0, 0);
verify_lost_event (h, 4, 0, 0);
/* verify that buffer 5 made it through! */
out_buf = gst_harness_pull (h);
fail_unless (GST_BUFFER_FLAG_IS_SET (out_buf, GST_BUFFER_FLAG_DISCONT));
fail_unless_equals_int (5, get_rtp_seq_num (out_buf));
gst_buffer_unref (out_buf);
fail_unless (verify_jb_stats (h->element,
gst_structure_new ("application/x-rtp-jitterbuffer-stats",
"num-pushed", G_TYPE_UINT64, (guint64) 4,
"num-lost", G_TYPE_UINT64, (guint64) 2, NULL)));
gst_harness_teardown (h);
}
GST_END_TEST;
GST_START_TEST (test_reorder_of_non_equidistant_packets)
{
GstHarness *h = gst_harness_new ("rtpjitterbuffer");
GstTestClock *testclock;
gint latency_ms = 5;
GstClockID pending_id;
GstClockTime time;
gint seq, frame;
gint num_init_frames = 1;
const GstClockTime frame_dur = TEST_BUF_DURATION;
const guint32 frame_rtp_ts_dur = TEST_RTP_TS_DURATION;
gst_harness_set_src_caps (h, generate_caps ());
testclock = gst_harness_get_testclock (h);
g_object_set (h->element, "do-lost", TRUE, "latency", latency_ms, NULL);
for (frame = 0, seq = 0; frame < num_init_frames; frame++, seq += 2) {
/* Push a couple of packets with identical timestamp, typical for a video
* stream where one frame generates multiple packets. */
gst_harness_set_time (h, frame * frame_dur);
gst_harness_push (h, generate_test_buffer_full (frame * frame_dur,
seq, frame * frame_rtp_ts_dur));
gst_harness_push (h, generate_test_buffer_full (frame * frame_dur,
seq + 1, frame * frame_rtp_ts_dur));
if (frame == 0)
/* deadline for buffer 0 expires */
gst_harness_crank_single_clock_wait (h);
gst_buffer_unref (gst_harness_pull (h));
gst_buffer_unref (gst_harness_pull (h));
}
/* Finally push the last frame reordered */
gst_harness_set_time (h, frame * frame_dur);
gst_harness_push (h, generate_test_buffer_full (frame * frame_dur,
seq + 1, frame * frame_rtp_ts_dur));
/* Check the scheduled lost timer. The expected arrival of this packet
* should be assumed to be the same as the last packet received since we
* don't know wether the missing packet belonged to this or previous
* frame. */
gst_test_clock_wait_for_next_pending_id (testclock, &pending_id);
time = gst_clock_id_get_time (pending_id);
fail_unless_equals_int64 (time, frame * frame_dur + latency_ms * GST_MSECOND);
gst_clock_id_unref (pending_id);
/* And then missing packet arrives just in time */
gst_harness_set_time (h, time - 1);
gst_harness_push (h, generate_test_buffer_full (time - 1, seq,
frame * frame_rtp_ts_dur));
gst_buffer_unref (gst_harness_pull (h));
gst_buffer_unref (gst_harness_pull (h));
gst_object_unref (testclock);
gst_harness_teardown (h);
}
GST_END_TEST;
GST_START_TEST (test_loss_equidistant_spacing_with_parameter_packets)
{
GstHarness *h = gst_harness_new ("rtpjitterbuffer");
gint latency_ms = 5;
gint seq, frame;
gint num_init_frames = 10;
gint i;
gst_harness_set_src_caps (h, generate_caps ());
g_object_set (h->element, "do-lost", TRUE, "latency", latency_ms, NULL);
/* drop stream-start, caps, segment */
for (i = 0; i < 3; i++)
gst_event_unref (gst_harness_pull_event (h));
for (frame = 0, seq = 0; frame < num_init_frames; frame++, seq++) {
gst_harness_set_time (h, frame * TEST_BUF_DURATION);
gst_harness_push (h, generate_test_buffer_full (frame * TEST_BUF_DURATION,
seq, frame * TEST_RTP_TS_DURATION));
if (frame == 0)
/* deadline for buffer 0 expires */
gst_harness_crank_single_clock_wait (h);
gst_buffer_unref (gst_harness_pull (h));
}
/* Push three packets with same rtptime, simulating parameter packets +
* frame. This should not disable equidistant mode as it is common for
* certain audio codecs. */
for (i = 0; i < 3; i++) {
gst_harness_set_time (h, frame * TEST_BUF_DURATION);
gst_harness_push (h, generate_test_buffer_full (frame * TEST_BUF_DURATION,
seq++, frame * TEST_RTP_TS_DURATION));
gst_buffer_unref (gst_harness_pull (h));
}
frame++;
/* Finally push the last packet introducing a gap */
gst_harness_set_time (h, frame * TEST_BUF_DURATION);
gst_harness_push (h, generate_test_buffer_full (frame * TEST_BUF_DURATION,
seq + 1, frame * TEST_RTP_TS_DURATION));
/* Check that the lost event has been generated assuming equidistant
* spacing. */
verify_lost_event (h, seq,
frame * TEST_BUF_DURATION - TEST_BUF_DURATION / 2, TEST_BUF_DURATION / 2);
gst_buffer_unref (gst_harness_pull (h));
gst_harness_teardown (h);
}
GST_END_TEST;
static void
gst_test_clock_set_time_and_process (GstTestClock * testclock,
GstClockTime time)
{
GstClockID id, tid;
gst_test_clock_wait_for_next_pending_id (testclock, &id);
gst_test_clock_set_time (testclock, time);
tid = gst_test_clock_process_next_clock_id (testclock);
g_assert (tid == id);
gst_clock_id_unref (tid);
gst_clock_id_unref (id);
}
GST_START_TEST (test_rtx_expected_next)
{
GstHarness *h = gst_harness_new ("rtpjitterbuffer");
gint latency_ms = 200;
guint next_seqnum;
GstClockTime timeout;
gint rtx_delay_ms;
const GstClockTime rtx_retry_timeout_ms = 40;
g_object_set (h->element, "do-lost", TRUE, NULL);
g_object_set (h->element, "do-retransmission", TRUE, NULL);
g_object_set (h->element, "rtx-retry-period", 120, NULL);
next_seqnum = construct_deterministic_initial_state (h, latency_ms);
/* At this point there is already existing a rtx-timer for @next_seqnum,
* that will have a timeout of the expected arrival-time for that seqnum,
* and a delay equal to 2*jitter==0 and 0.5*packet_spacing==10ms */
timeout = next_seqnum * TEST_BUF_DURATION;
rtx_delay_ms = 0.5 * TEST_BUF_MS;
/* We crank the clock to time-out the next scheduled timer */
gst_harness_crank_single_clock_wait (h);
verify_rtx_event (h, next_seqnum, timeout, rtx_delay_ms, TEST_BUF_DURATION);
/* now we wait for the next timeout, all following timeouts 40ms in the
* future because this is rtx-retry-timeout */
rtx_delay_ms += rtx_retry_timeout_ms;
gst_harness_crank_single_clock_wait (h);
verify_rtx_event (h, next_seqnum, timeout, rtx_delay_ms, TEST_BUF_DURATION);
/* And a third time... */
rtx_delay_ms += rtx_retry_timeout_ms;
gst_harness_crank_single_clock_wait (h);
verify_rtx_event (h, next_seqnum, timeout, rtx_delay_ms, TEST_BUF_DURATION);
/* we should now receive a packet-lost-event for packet @next_seqnum */
gst_harness_crank_single_clock_wait (h);
verify_lost_event (h, next_seqnum, timeout, TEST_BUF_DURATION);
gst_harness_teardown (h);
}
GST_END_TEST;
GST_START_TEST (test_rtx_two_missing)
{
GstHarness *h = gst_harness_new ("rtpjitterbuffer");
gint latency_ms = 200;
guint next_seqnum;
GstClockTime last_rtx_request, now;
gint rtx_delay_ms = 0.5 * TEST_BUF_MS;
g_object_set (h->element, "do-retransmission", TRUE, NULL);
next_seqnum = construct_deterministic_initial_state (h, latency_ms);
fail_unless_equals_int (11, next_seqnum);
/*
* The expected sequence of buffers is this:
* ____ ____ ____ ____
* ... | 10 | | 11 | | 12 | | 13 |
* –––– –––– –––– ––––
* 200ms 220ms 240ms 260ms
*
* But instead we get this:
* ____ _ _ _ _ ____
* ... | 10 | | | | | | 13 |
* –––– - - - - ––––
* 200ms 260ms
*
* Now it is important to note that the next thing that happens is that
* the RTX timeout for packet 11 will happen at time 230ms, so we crank
* the timer thread to advance the time to this:
*/
gst_harness_crank_single_clock_wait (h);
verify_rtx_event (h, 11, 11 * TEST_BUF_DURATION,
rtx_delay_ms, TEST_BUF_DURATION);
last_rtx_request = gst_clock_get_time (GST_ELEMENT_CLOCK (h->element));
fail_unless_equals_int64 (last_rtx_request,
11 * TEST_BUF_DURATION + rtx_delay_ms * GST_MSECOND);
gst_harness_wait_for_clock_id_waits (h, 1, 60);
/* The next scheduled RTX for packet 11 is now at 230 + 40 = 270ms,
so the next thing that happens is that buffer 13 arrives in perfect time: */
now = 13 * TEST_BUF_DURATION;
gst_harness_set_time (h, now);
fail_unless_equals_int (GST_FLOW_OK,
gst_harness_push (h,
generate_test_buffer_full (now, 13, 13 * TEST_RTP_TS_DURATION)));
/*
*
* This will estimate the dts on the two missing packets to:
* ____ ____
* ... | 11 | | 12 | ...
* –––– ––––
* 220ms 240ms
*
* And given their regular interspacing of 20ms, it will schedule two RTX
* timers for them like so:
*
* ____ ____
* ... | 11 | | 12 | ...
* –––– ––––
* 230ms 250ms
*
* There are however two problems, packet 11 we have already sent one RTX for
* and its timeout is currently at 270ms, so we should not tamper with that,
* and as for packet 12, 250ms has already expired, so we now expect to see
* an rtx-event being sent for packet 12 immediately:
*/
verify_rtx_event (h, 12, 12 * TEST_BUF_DURATION,
rtx_delay_ms, TEST_BUF_DURATION);
/* and another crank will see the second RTX event being sent for packet 11 */
gst_harness_crank_single_clock_wait (h);
rtx_delay_ms += 40;
verify_rtx_event (h, 11, 11 * TEST_BUF_DURATION,
rtx_delay_ms, TEST_BUF_DURATION);
last_rtx_request = gst_clock_get_time (GST_ELEMENT_CLOCK (h->element));
fail_unless_equals_int64 (last_rtx_request,
11 * TEST_BUF_DURATION + rtx_delay_ms * GST_MSECOND);
gst_harness_teardown (h);
}
GST_END_TEST;
GST_START_TEST (test_rtx_buffer_arrives_just_in_time)
{
GstHarness *h = gst_harness_new ("rtpjitterbuffer");
gint latency_ms = 5 * TEST_BUF_MS;
gint next_seqnum;
GstBuffer *buffer;
GstClockTime now, last_rtx_request;
gint rtx_delay_ms = 0.5 * TEST_BUF_MS;
g_object_set (h->element, "do-retransmission", TRUE,
"rtx-max-retries", 1, NULL);
next_seqnum = construct_deterministic_initial_state (h, latency_ms);
/* Crank clock to send retransmission events requesting seqnum 6 which has
* not arrived yet. */
gst_harness_crank_single_clock_wait (h);
verify_rtx_event (h, next_seqnum,
next_seqnum * TEST_BUF_DURATION, rtx_delay_ms, TEST_BUF_DURATION);
last_rtx_request = gst_clock_get_time (GST_ELEMENT_CLOCK (h->element));
fail_unless_equals_int64 (last_rtx_request,
next_seqnum * TEST_BUF_DURATION + rtx_delay_ms * GST_MSECOND);
/* seqnum 6 arrives just before it times out and is considered lost */
now = 200 * GST_MSECOND;
gst_harness_set_time (h, now);
fail_unless_equals_int (GST_FLOW_OK, gst_harness_push (h,
generate_test_buffer_rtx (now, next_seqnum)));
buffer = gst_harness_pull (h);
fail_unless_equals_int (next_seqnum, get_rtp_seq_num (buffer));
gst_buffer_unref (buffer);
fail_unless (verify_jb_stats (h->element,
gst_structure_new ("application/x-rtp-jitterbuffer-stats",
"num-pushed", G_TYPE_UINT64, (guint64) next_seqnum + 1,
"num-lost", G_TYPE_UINT64, (guint64) 0,
"rtx-count", G_TYPE_UINT64, (guint64) 1,
"rtx-success-count", G_TYPE_UINT64, (guint64) 1,
"rtx-per-packet", G_TYPE_DOUBLE, 1.0,
"rtx-rtt", G_TYPE_UINT64, (guint64) (now - last_rtx_request),
NULL)));
gst_harness_teardown (h);
}
GST_END_TEST;
GST_START_TEST (test_rtx_buffer_arrives_too_late)
{
GstHarness *h = gst_harness_new ("rtpjitterbuffer");
gint latency_ms = 5 * TEST_BUF_MS;
gint next_seqnum;
GstClockTime now, last_rtx_request;
gint rtx_delay_ms = 0.5 * TEST_BUF_MS;
g_object_set (h->element, "do-retransmission", TRUE,
"do-lost", TRUE, "rtx-max-retries", 1, NULL);
next_seqnum = construct_deterministic_initial_state (h, latency_ms);
/* Crank clock to send retransmission events requesting seqnum 6 which has
* not arrived yet. */
gst_harness_crank_single_clock_wait (h);
verify_rtx_event (h, next_seqnum,
next_seqnum * TEST_BUF_DURATION, rtx_delay_ms, TEST_BUF_DURATION);
last_rtx_request = gst_clock_get_time (GST_ELEMENT_CLOCK (h->element));
fail_unless_equals_int64 (last_rtx_request,
next_seqnum * TEST_BUF_DURATION + rtx_delay_ms * GST_MSECOND);
/* packet @next_seqnum is considered lost */
gst_harness_crank_single_clock_wait (h);
verify_lost_event (h, next_seqnum,
next_seqnum * TEST_BUF_DURATION, TEST_BUF_DURATION);
/* packet @next_seqnum arrives too late */
now = gst_clock_get_time (GST_ELEMENT_CLOCK (h->element));
fail_unless_equals_int (GST_FLOW_OK, gst_harness_push (h,
generate_test_buffer_rtx (now, next_seqnum)));
fail_unless (verify_jb_stats (h->element,
gst_structure_new ("application/x-rtp-jitterbuffer-stats",
"num-pushed", G_TYPE_UINT64, (guint64) next_seqnum,
"num-lost", G_TYPE_UINT64, (guint64) 1,
"num-late", G_TYPE_UINT64, (guint64) 1,
"num-duplicates", G_TYPE_UINT64, (guint64) 0,
"rtx-count", G_TYPE_UINT64, (guint64) 1,
"rtx-success-count", G_TYPE_UINT64, (guint64) 0,
"rtx-per-packet", G_TYPE_DOUBLE, 1.0,
"rtx-rtt", G_TYPE_UINT64, (guint64) (now - last_rtx_request),
NULL)));
gst_harness_teardown (h);
}
GST_END_TEST;
GST_START_TEST (test_rtx_original_buffer_does_not_update_rtx_stats)
{
GstHarness *h = gst_harness_new ("rtpjitterbuffer");
gint latency_ms = 100;
gint next_seqnum;
GstBuffer *buffer;
GstClockTime now, last_rtx_request;
gint rtx_delay_ms = 0.5 * TEST_BUF_MS;
g_object_set (h->element, "do-retransmission", TRUE,
"rtx-max-retries", 1, NULL);
next_seqnum = construct_deterministic_initial_state (h, latency_ms);
fail_unless_equals_int (6, next_seqnum);
/* Crank clock to send retransmission events requesting @next_seqnum which has
* not arrived yet. */
gst_harness_crank_single_clock_wait (h);
verify_rtx_event (h, next_seqnum,
next_seqnum * TEST_BUF_DURATION, rtx_delay_ms, TEST_BUF_DURATION);
last_rtx_request = gst_clock_get_time (GST_ELEMENT_CLOCK (h->element));
fail_unless_equals_int64 (last_rtx_request,
next_seqnum * TEST_BUF_DURATION + rtx_delay_ms * GST_MSECOND);
/* ORIGINAL seqnum 6 arrives just before it times out and is considered
* lost. */
now = 200 * GST_MSECOND;
gst_harness_set_time (h, now);
fail_unless_equals_int (GST_FLOW_OK, gst_harness_push (h,
generate_test_buffer_full (now,
next_seqnum, next_seqnum * TEST_RTP_TS_DURATION)));
buffer = gst_harness_pull (h);
fail_unless_equals_int (next_seqnum, get_rtp_seq_num (buffer));
gst_buffer_unref (buffer);
/* due to the advance in time, we will now also have sent
an rtx-request for 7 */
next_seqnum++;
verify_rtx_event (h, next_seqnum,
next_seqnum * TEST_BUF_DURATION, rtx_delay_ms, TEST_BUF_DURATION);
/* The original buffer does not count in the RTX stats. */
fail_unless (verify_jb_stats (h->element,
gst_structure_new ("application/x-rtp-jitterbuffer-stats",
"num-pushed", G_TYPE_UINT64, (guint64) next_seqnum,
"num-lost", G_TYPE_UINT64, (guint64) 0,
"num-late", G_TYPE_UINT64, (guint64) 0,
"num-duplicates", G_TYPE_UINT64, (guint64) 0,
"rtx-count", G_TYPE_UINT64, (guint64) 2,
"rtx-success-count", G_TYPE_UINT64, (guint64) 0,
"rtx-per-packet", G_TYPE_DOUBLE, 0.0,
"rtx-rtt", G_TYPE_UINT64, (guint64) 0, NULL)));
/* Now the retransmitted packet arrives and stats should be updated. Note
* that the buffer arrives in time and should not be considered late, but
* a duplicate. */
fail_unless_equals_int (GST_FLOW_OK, gst_harness_push (h,
generate_test_buffer_rtx (now, 6)));
fail_unless (verify_jb_stats (h->element,
gst_structure_new ("application/x-rtp-jitterbuffer-stats",
"num-pushed", G_TYPE_UINT64, (guint64) next_seqnum,
"num-lost", G_TYPE_UINT64, (guint64) 0,
"num-late", G_TYPE_UINT64, (guint64) 0,
"num-duplicates", G_TYPE_UINT64, (guint64) 1,
"rtx-count", G_TYPE_UINT64, (guint64) 2,
"rtx-success-count", G_TYPE_UINT64, (guint64) 0,
"rtx-per-packet", G_TYPE_DOUBLE, 1.0,
"rtx-rtt", G_TYPE_UINT64, (guint64) (now - last_rtx_request),
NULL)));
gst_harness_teardown (h);
}
GST_END_TEST;
GST_START_TEST (test_rtx_duplicate_packet_updates_rtx_stats)
{
GstHarness *h = gst_harness_new ("rtpjitterbuffer");
gint latency_ms = 100;
gint next_seqnum;
GstClockTime now, rtx_request_6, rtx_request_7;
gint rtx_delay_ms = 0.5 * TEST_BUF_MS;
gint i;
g_object_set (h->element, "do-retransmission", TRUE, NULL);
next_seqnum = construct_deterministic_initial_state (h, latency_ms);
fail_unless_equals_int (6, next_seqnum);
/* Push packet 8 so that 6 and 7 is missing */
fail_unless_equals_int (GST_FLOW_OK,
gst_harness_push (h, generate_test_buffer (8)));
/* Wait for NACKs on 6 and 7 */
gst_harness_crank_single_clock_wait (h);
verify_rtx_event (h, 6, 6 * TEST_BUF_DURATION,
rtx_delay_ms, TEST_BUF_DURATION);
rtx_request_6 = gst_clock_get_time (GST_ELEMENT_CLOCK (h->element));
fail_unless_equals_int64 (rtx_request_6,
6 * TEST_BUF_DURATION + rtx_delay_ms * GST_MSECOND);
gst_harness_crank_single_clock_wait (h);
verify_rtx_event (h,
7, 7 * TEST_BUF_DURATION, rtx_delay_ms, TEST_BUF_DURATION);
rtx_request_7 = gst_clock_get_time (GST_ELEMENT_CLOCK (h->element));
fail_unless_equals_int64 (rtx_request_7,
7 * TEST_BUF_DURATION + rtx_delay_ms * GST_MSECOND);
/* Original packet 7 arrives */
now = 150 * GST_MSECOND;
gst_harness_set_time (h, now);
fail_unless_equals_int (GST_FLOW_OK, gst_harness_push (h,
generate_test_buffer_full (now, 7, 7 * TEST_RTP_TS_DURATION)));
/* We're still waiting for packet 6, so 7 should not be pushed */
gst_harness_wait_for_clock_id_waits (h, 1, 60);
fail_unless_equals_int (gst_harness_buffers_in_queue (h), 0);
/* The original buffer does not count in the RTX stats. */
fail_unless (verify_jb_stats (h->element,
gst_structure_new ("application/x-rtp-jitterbuffer-stats",
"num-lost", G_TYPE_UINT64, (guint64) 0,
"num-late", G_TYPE_UINT64, (guint64) 0,
"num-duplicates", G_TYPE_UINT64, (guint64) 0,
"rtx-count", G_TYPE_UINT64, (guint64) 2,
"rtx-success-count", G_TYPE_UINT64, (guint64) 0,
"rtx-per-packet", G_TYPE_DOUBLE, 0.0,
"rtx-rtt", G_TYPE_UINT64, (guint64) 0, NULL)));
/* Push RTX packet 7. Should be dropped as duplicate but update RTX stats. */
now = 160 * GST_MSECOND;
gst_harness_set_time (h, now);
fail_unless_equals_int (GST_FLOW_OK, gst_harness_push (h,
generate_test_buffer_rtx (now, 7)));
gst_harness_wait_for_clock_id_waits (h, 1, 60);
fail_unless_equals_int (gst_harness_buffers_in_queue (h), 0);
/* Check RTX stats with updated num-duplicates and rtx-rtt fields */
fail_unless (verify_jb_stats (h->element,
gst_structure_new ("application/x-rtp-jitterbuffer-stats",
"num-pushed", G_TYPE_UINT64, (guint64) next_seqnum,
"num-lost", G_TYPE_UINT64, (guint64) 0,
"num-late", G_TYPE_UINT64, (guint64) 0,
"num-duplicates", G_TYPE_UINT64, (guint64) 1,
"rtx-count", G_TYPE_UINT64, (guint64) 2,
"rtx-success-count", G_TYPE_UINT64, (guint64) 0,
"rtx-per-packet", G_TYPE_DOUBLE, 1.0,
"rtx-rtt", G_TYPE_UINT64, (guint64) (now - rtx_request_7),
NULL)));
/* RTX packet 6 arrives, both 6, 7 and 8 is ready to be pulled */
fail_unless_equals_int (GST_FLOW_OK, gst_harness_push (h,
generate_test_buffer_rtx (now, 6)));
for (i = 6; i <= 8; i++) {
GstBuffer *buf = gst_harness_pull (h);
fail_unless_equals_int (i, get_rtp_seq_num (buf));
gst_buffer_unref (buf);
}
/* RTX stats is updated with success count increased. */
fail_unless (verify_jb_stats (h->element,
gst_structure_new ("application/x-rtp-jitterbuffer-stats",
"num-pushed", G_TYPE_UINT64, (guint64) next_seqnum + 3,
"num-lost", G_TYPE_UINT64, (guint64) 0,
"num-late", G_TYPE_UINT64, (guint64) 0,
"num-duplicates", G_TYPE_UINT64, (guint64) 1,
"rtx-count", G_TYPE_UINT64, (guint64) 2,
"rtx-success-count", G_TYPE_UINT64, (guint64) 1,
"rtx-per-packet", G_TYPE_DOUBLE, 1.0,
"rtx-rtt", G_TYPE_UINT64, (guint64)
/* Use the rtx-rtt formula. Can be subject to change though. */
((now - rtx_request_6) + 47 * (now - rtx_request_7)) / 48,
NULL)));
gst_harness_teardown (h);
}
GST_END_TEST;
GST_START_TEST (test_rtx_buffer_arrives_after_lost_updates_rtx_stats)
{
GstHarness *h = gst_harness_new ("rtpjitterbuffer");
gint latency_ms = 100;
gint next_seqnum;
GstClockTime now, last_rtx_request;
gint rtx_delay_ms = 0.5 * TEST_BUF_MS;
g_object_set (h->element, "do-retransmission", TRUE,
"do-lost", TRUE, "rtx-max-retries", 1, NULL);
next_seqnum = construct_deterministic_initial_state (h, latency_ms);
/* Crank clock to send retransmission events requesting seqnum 6 which has
* not arrived yet. */
gst_harness_crank_single_clock_wait (h);
verify_rtx_event (h, next_seqnum,
next_seqnum * TEST_BUF_DURATION, rtx_delay_ms, TEST_BUF_DURATION);
last_rtx_request = gst_clock_get_time (GST_ELEMENT_CLOCK (h->element));
fail_unless_equals_int64 (last_rtx_request,
next_seqnum * TEST_BUF_DURATION + rtx_delay_ms * GST_MSECOND);
/* seqnum 6 is considered lost */
gst_harness_crank_single_clock_wait (h);
verify_lost_event (h, next_seqnum,
next_seqnum * TEST_BUF_DURATION, TEST_BUF_DURATION);
/* seqnum 6 arrives too late */
now = gst_clock_get_time (GST_ELEMENT_CLOCK (h->element));
fail_unless_equals_int (GST_FLOW_OK, gst_harness_push (h,
generate_test_buffer_rtx (now, next_seqnum)));
fail_unless (verify_jb_stats (h->element,
gst_structure_new ("application/x-rtp-jitterbuffer-stats",
"num-pushed", G_TYPE_UINT64, (guint64) next_seqnum,
"num-lost", G_TYPE_UINT64, (guint64) 1,
"num-late", G_TYPE_UINT64, (guint64) 1,
"num-duplicates", G_TYPE_UINT64, (guint64) 0,
"rtx-count", G_TYPE_UINT64, (guint64) 1,
"rtx-success-count", G_TYPE_UINT64, (guint64) 0,
"rtx-per-packet", G_TYPE_DOUBLE, 1.0,
"rtx-rtt", G_TYPE_UINT64, (guint64) (now - last_rtx_request),
NULL)));
gst_harness_teardown (h);
}
GST_END_TEST;
GST_START_TEST (test_rtx_rtt_larger_than_retry_timeout)
{
/* When RTT is larger than retry period we will send two or more requests
* before receiving any retransmission packets */
GstHarness *h = gst_harness_new ("rtpjitterbuffer");
gint latency_ms = 100;
gint next_seqnum;
gint rtx_retry_timeout_ms = 20;
gint rtx_delay_ms = 0.5 * TEST_BUF_MS;
gint rtt = rtx_retry_timeout_ms * GST_MSECOND + 1;
GstClockTime now, first_request, second_request;
g_object_set (h->element, "do-retransmission", TRUE,
"rtx-retry-timeout", rtx_retry_timeout_ms, NULL);
next_seqnum = construct_deterministic_initial_state (h, latency_ms);
/* Wait for first NACK on 6 */
gst_harness_crank_single_clock_wait (h);
verify_rtx_event (h, next_seqnum,
next_seqnum * TEST_BUF_DURATION, rtx_delay_ms, TEST_BUF_DURATION);
first_request = gst_clock_get_time (GST_ELEMENT_CLOCK (h->element));
fail_unless_equals_int64 (first_request,
next_seqnum * TEST_BUF_DURATION + rtx_delay_ms * GST_MSECOND);
/* Packet @next_seqnum + 1 arrives in time (so that we avoid its EXPECTED
* timers to interfer with our test) */
push_test_buffer (h, next_seqnum + 1);
/* Simulating RTT > rtx-retry-timeout, we send a new NACK before receiving
* the RTX packet. Wait for second NACK on @next_seqnum */
gst_harness_crank_single_clock_wait (h);
rtx_delay_ms += rtx_retry_timeout_ms;
verify_rtx_event (h, next_seqnum,
next_seqnum * TEST_BUF_DURATION, rtx_delay_ms, TEST_BUF_DURATION);
second_request = gst_clock_get_time (GST_ELEMENT_CLOCK (h->element));
fail_unless_equals_int64 (second_request,
next_seqnum * TEST_BUF_DURATION + rtx_delay_ms * GST_MSECOND);
/* The first retransmitted packet arrives */
now = first_request + rtt;
gst_harness_set_time (h, now);
fail_unless_equals_int (GST_FLOW_OK, gst_harness_push (h,
generate_test_buffer_rtx (now, next_seqnum)));
/* Pull packets @next_seqnum and @next_seqnum + 1 */
gst_buffer_unref (gst_harness_pull (h));
gst_buffer_unref (gst_harness_pull (h));
/* Stats should be updated. Note that RTT is not updated since we cannot be
* sure whether the RTX packet is in response to the first or second NACK. */
fail_unless (verify_jb_stats (h->element,
gst_structure_new ("application/x-rtp-jitterbuffer-stats",
"num-pushed", G_TYPE_UINT64, (guint64) next_seqnum + 2,
"num-lost", G_TYPE_UINT64, (guint64) 0,
"num-late", G_TYPE_UINT64, (guint64) 0,
"num-duplicates", G_TYPE_UINT64, (guint64) 0,
"rtx-count", G_TYPE_UINT64, (guint64) 2,
"rtx-success-count", G_TYPE_UINT64, (guint64) 1,
"rtx-per-packet", G_TYPE_DOUBLE, 2.0,
"rtx-rtt", G_TYPE_UINT64, (guint64) 0, NULL)));
/* Packet @next_seqnum + 2 arrives in time */
push_test_buffer (h, next_seqnum + 2);
gst_buffer_unref (gst_harness_pull (h));
/* Now the second retransmitted packet arrives */
now = second_request + rtt;
gst_harness_set_time (h, now);
fail_unless_equals_int (GST_FLOW_OK, gst_harness_push (h,
generate_test_buffer_rtx (now, next_seqnum)));
/* The stats is updated with the correct RTT. */
fail_unless (verify_jb_stats (h->element,
gst_structure_new ("application/x-rtp-jitterbuffer-stats",
"num-pushed", G_TYPE_UINT64, (guint64) next_seqnum + 3,
"num-lost", G_TYPE_UINT64, (guint64) 0,
"num-late", G_TYPE_UINT64, (guint64) 0,
"num-duplicates", G_TYPE_UINT64, (guint64) 1,
"rtx-count", G_TYPE_UINT64, (guint64) 2,
"rtx-success-count", G_TYPE_UINT64, (guint64) 1,
"rtx-per-packet", G_TYPE_DOUBLE, 2.0,
"rtx-rtt", G_TYPE_UINT64, (guint64) rtt, NULL)));
gst_harness_teardown (h);
}
GST_END_TEST;
GST_START_TEST (test_rtx_no_request_if_time_past_retry_period)
{
GstHarness *h = gst_harness_new ("rtpjitterbuffer");
const gint latency_ms = 200;
const gint retry_period_ms = 120;
GstTestClock *testclock;
GstClockID pending_id;
GstClockTime time;
gint i;
gst_harness_set_src_caps (h, generate_caps ());
testclock = gst_harness_get_testclock (h);
g_object_set (h->element, "do-lost", TRUE, NULL);
g_object_set (h->element, "do-retransmission", TRUE, NULL);
g_object_set (h->element, "latency", latency_ms, NULL);
g_object_set (h->element, "rtx-retry-period", retry_period_ms, NULL);
/* push the first couple of buffers */
push_test_buffer (h, 0);
push_test_buffer (h, 1);
/* drop reconfigure event */
gst_event_unref (gst_harness_pull_upstream_event (h));
/* drop GstEventStreamStart & GstEventCaps & GstEventSegment */
for (i = 0; i < 3; i++)
gst_event_unref (gst_harness_pull_event (h));
/* Wait for the first EXPECTED timer to be scheduled */
gst_test_clock_wait_for_next_pending_id (testclock, &pending_id);
time = gst_clock_id_get_time (pending_id);
gst_clock_id_unref (pending_id);
fail_unless_equals_int64 (time, 2 * TEST_BUF_DURATION + 10 * GST_MSECOND);
/* Let the first EXPECTED timer time out and be sent. However, set the 'now'
* time to be past the retry-period simulating that the jitterbuffer has too
* much to do and is not able to process all timers in real-time. In this
* case the jitterbuffer should not schedule a new EXPECTED timer as that
* would just make matters worse (more unnecessary processing of a request
* that is already too late to be valuable). In practice this typically
* happens for high loss networks with low RTT. */
gst_test_clock_set_time_and_process (testclock,
2 * TEST_BUF_DURATION + retry_period_ms * GST_MSECOND + 1);
/* Verify the event. It could be argued that this request is already too
* late and unnecessary. However, in order to keep things simple (for now)
* we just keep the already scehduled EXPECTED timer, but refrain from
* scheduled another EXPECTED timer */
verify_rtx_event (h, 2, 2 * TEST_BUF_DURATION, 10, TEST_BUF_DURATION);
/* "crank" to reach the DEADLINE for packet 0 */
gst_harness_crank_single_clock_wait (h);
gst_buffer_unref (gst_harness_pull (h));
gst_buffer_unref (gst_harness_pull (h));
fail_unless_equals_int (0, gst_harness_upstream_events_in_queue (h));
fail_unless_equals_int (0, gst_harness_events_in_queue (h));
/* "crank" to time out the LOST event */
gst_harness_crank_single_clock_wait (h);
verify_lost_event (h, 2, 2 * TEST_BUF_DURATION, TEST_BUF_DURATION);
gst_object_unref (testclock);
gst_harness_teardown (h);
}
GST_END_TEST;
GST_START_TEST (test_rtx_same_delay_and_retry_timeout)
{
GstHarness *h = gst_harness_new ("rtpjitterbuffer");
gint latency_ms = 5 * TEST_BUF_MS;
gint next_seqnum;
gint rtx_delay_ms = 20;
GstClockTime last_rtx_request;
g_object_set (h->element, "do-retransmission", TRUE,
"rtx-max-retries", 3, "rtx-delay", rtx_delay_ms,
"rtx-retry-timeout", rtx_delay_ms, NULL);
next_seqnum = construct_deterministic_initial_state (h, latency_ms);
/* Crank clock to send retransmission events requesting seqnum 6 which has
* not arrived yet. */
gst_harness_crank_single_clock_wait (h);
verify_rtx_event (h, next_seqnum,
next_seqnum * TEST_BUF_DURATION, rtx_delay_ms, TEST_BUF_DURATION);
/* first rtx for packet @next_seqnum should arrive at the right time */
last_rtx_request = gst_clock_get_time (GST_ELEMENT_CLOCK (h->element));
fail_unless_equals_int64 (last_rtx_request,
next_seqnum * TEST_BUF_DURATION + rtx_delay_ms * GST_MSECOND);
/* verify we have pulled out all rtx-events */
fail_unless_equals_int (0, gst_harness_upstream_events_in_queue (h));
/* now crank to get the second attempt at packet @next_seqnum */
gst_harness_crank_single_clock_wait (h);
verify_rtx_event (h, next_seqnum,
next_seqnum * TEST_BUF_DURATION, rtx_delay_ms * 2, TEST_BUF_DURATION);
/* second rtx for seqnum 6 should arrive at 140 + 20ms */
last_rtx_request = gst_clock_get_time (GST_ELEMENT_CLOCK (h->element));
fail_unless_equals_int64 (last_rtx_request,
next_seqnum * TEST_BUF_DURATION + rtx_delay_ms * 2 * GST_MSECOND);
/* verify we have pulled out all rtx-events */
fail_unless_equals_int (0, gst_harness_upstream_events_in_queue (h));
fail_unless (verify_jb_stats (h->element,
gst_structure_new ("application/x-rtp-jitterbuffer-stats",
"num-pushed", G_TYPE_UINT64, (guint64) next_seqnum,
"num-lost", G_TYPE_UINT64, (guint64) 0,
"rtx-count", G_TYPE_UINT64, (guint64) 2, NULL)));
gst_harness_teardown (h);
}
GST_END_TEST;
GST_START_TEST (test_rtx_with_backwards_rtptime)
{
GstHarness *h = gst_harness_new ("rtpjitterbuffer");
gint latency_ms = 40;
g_object_set (h->element, "do-retransmission", TRUE, NULL);
construct_deterministic_initial_state (h, latency_ms);
/*
* For video using B-frames, an expected sequence
* could be like this:
* (I = I-frame, P = P-frame, B = B-frame)
* ___ ___ ___
* ... | 3 | | 4 | | 5 |
* ––– ––– –––
* rtptime: 3(I) 5(P) 4(B)
* arrival(dts): 3 5 5
*
* Notice here that packet 5 (the B frame) make
* the rtptime go backwards.
*/
/* seqnum 3, arriving at time 3 with rtptime 3 */
push_test_buffer (h, 3);
gst_buffer_unref (gst_harness_pull (h));
/* seqnum 4, arriving at time 5 with rtptime 5 */
gst_harness_push (h, generate_test_buffer_full (5 * TEST_BUF_DURATION,
4, 5 * TEST_RTP_TS_DURATION));
gst_buffer_unref (gst_harness_pull (h));
/* seqnum 5, arriving at time 5 with rtptime 4 */
gst_harness_push (h, generate_test_buffer_full (5 * TEST_BUF_DURATION,
5, 4 * TEST_RTP_TS_DURATION));
gst_buffer_unref (gst_harness_pull (h));
/* crank to time-out the rtx-request for seqnum 6, the point here
being that the backwards rtptime did not mess up the timeout for
the rtx event */
gst_harness_crank_single_clock_wait (h);
verify_rtx_event (h, 6, 5 * TEST_BUF_DURATION + 15 * GST_MSECOND,
17, 35 * GST_MSECOND);
fail_unless (verify_jb_stats (h->element,
gst_structure_new ("application/x-rtp-jitterbuffer-stats",
"num-pushed", G_TYPE_UINT64, (guint64) 6,
"rtx-count", G_TYPE_UINT64, (guint64) 1,
"num-lost", G_TYPE_UINT64, (guint64) 0, NULL)));
gst_harness_teardown (h);
}
GST_END_TEST;
GST_START_TEST (test_rtx_timer_reuse)
{
GstHarness *h = gst_harness_new ("rtpjitterbuffer");
gint latency_ms = 5 * TEST_BUF_MS;
gint rtx_delay_ms = 0.5 * TEST_BUF_MS;
guint next_seqnum;
g_object_set (h->element, "do-retransmission", TRUE,
"do-lost", TRUE, "rtx-max-retries", 1, NULL);
next_seqnum = construct_deterministic_initial_state (h, latency_ms);
/* crank to timeout the only rtx-request, and the timer will
* now reschedule as a lost-timer internally */
gst_harness_crank_single_clock_wait (h);
verify_rtx_event (h, next_seqnum,
next_seqnum * TEST_BUF_DURATION, rtx_delay_ms, TEST_BUF_DURATION);
/* but now buffer 6 arrives, and this should now reuse the lost-timer
* for 6, as an expected-timer for 7 */
fail_unless_equals_int (GST_FLOW_OK,
gst_harness_push (h, generate_test_buffer (next_seqnum)));
/* now crank to timeout the expected-timer for 7 and verify */
next_seqnum++;
gst_harness_crank_single_clock_wait (h);
verify_rtx_event (h, next_seqnum,
next_seqnum * TEST_BUF_DURATION, rtx_delay_ms, TEST_BUF_DURATION);
gst_harness_teardown (h);
}
GST_END_TEST;
GST_START_TEST (test_deadline_ts_offset)
{
GstHarness *h = gst_harness_new ("rtpjitterbuffer");
GstTestClock *testclock;
GstClockID id;
const gint jb_latency_ms = 10;
gst_harness_set_src_caps (h, generate_caps ());
testclock = gst_harness_get_testclock (h);
g_object_set (h->element, "latency", jb_latency_ms, NULL);
/* push the first buffer in */
fail_unless_equals_int (GST_FLOW_OK,
gst_harness_push (h, generate_test_buffer (0)));
/* wait_next_timeout() syncs on the deadline timer */
gst_test_clock_wait_for_next_pending_id (testclock, &id);
fail_unless_equals_uint64 (jb_latency_ms * GST_MSECOND,
gst_clock_id_get_time (id));
gst_clock_id_unref (id);
/* add ts-offset while waiting */
g_object_set (h->element, "ts-offset", 20 * GST_MSECOND, NULL);
gst_test_clock_set_time_and_process (testclock, jb_latency_ms * GST_MSECOND);
/* wait_next_timeout() syncs on the new deadline timer */
gst_test_clock_wait_for_next_pending_id (testclock, &id);
fail_unless_equals_uint64 ((20 + jb_latency_ms) * GST_MSECOND,
gst_clock_id_get_time (id));
gst_clock_id_unref (id);
/* now make deadline timer timeout */
gst_test_clock_set_time_and_process (testclock,
(20 + jb_latency_ms) * GST_MSECOND);
gst_buffer_unref (gst_harness_pull (h));
gst_object_unref (testclock);
gst_harness_teardown (h);
}
GST_END_TEST;
GST_START_TEST (test_push_big_gap)
{
GstHarness *h = gst_harness_new ("rtpjitterbuffer");
GstBuffer *buf;
const gint num_consecutive = 5;
gint i;
gst_harness_set_src_caps (h, generate_caps ());
for (i = 0; i < num_consecutive; i++)
fail_unless_equals_int (GST_FLOW_OK,
gst_harness_push (h, generate_test_buffer (1000 + i)));
fail_unless (gst_harness_crank_single_clock_wait (h));
for (i = 0; i < num_consecutive; i++) {
GstBuffer *buf = gst_harness_pull (h);
fail_unless_equals_int (1000 + i, get_rtp_seq_num (buf));
gst_buffer_unref (buf);
}
/* Push more packets from a different sequence number domain
* to trigger "big gap" logic. */
for (i = 0; i < num_consecutive; i++)
fail_unless_equals_int (GST_FLOW_OK,
gst_harness_push (h, generate_test_buffer (20000 + i)));
fail_unless (gst_harness_crank_single_clock_wait (h));
for (i = 0; i < num_consecutive; i++) {
GstBuffer *buf = gst_harness_pull (h);
fail_unless_equals_int (20000 + i, get_rtp_seq_num (buf));
gst_buffer_unref (buf);
}
/* Final buffer should be pushed straight through */
fail_unless_equals_int (GST_FLOW_OK,
gst_harness_push (h, generate_test_buffer (20000 + num_consecutive)));
buf = gst_harness_pull (h);
fail_unless_equals_int (20000 + num_consecutive, get_rtp_seq_num (buf));
gst_buffer_unref (buf);
gst_harness_teardown (h);
}
GST_END_TEST;
typedef struct
{
guint seqnum_offset;
guint late_buffer;
} TestLateArrivalInput;
static const TestLateArrivalInput
test_considered_lost_packet_in_large_gap_arrives_input[] = {
{0, 1}, {0, 2}, {65535, 1}, {65535, 2}, {65534, 1}, {65534, 2}
};
GST_START_TEST (test_considered_lost_packet_in_large_gap_arrives)
{
GstHarness *h = gst_harness_new ("rtpjitterbuffer");
GstTestClock *testclock;
GstClockID id;
GstBuffer *buffer;
gint jb_latency_ms = 20;
const TestLateArrivalInput *test_input =
&test_considered_lost_packet_in_large_gap_arrives_input[__i__];
guint seq_offset = test_input->seqnum_offset;
guint late_buffer = test_input->late_buffer;
gint i;
gst_harness_set_src_caps (h, generate_caps ());
testclock = gst_harness_get_testclock (h);
g_object_set (h->element, "do-lost", TRUE, "latency", jb_latency_ms, NULL);
/* first push buffer 0 */
fail_unless_equals_int (GST_FLOW_OK,
gst_harness_push (h, generate_test_buffer_full (0 * TEST_BUF_DURATION,
0 + seq_offset, 0 * TEST_RTP_TS_DURATION)));
fail_unless (gst_harness_crank_single_clock_wait (h));
gst_buffer_unref (gst_harness_pull (h));
/* drop GstEventStreamStart & GstEventCaps & GstEventSegment */
for (i = 0; i < 3; i++)
gst_event_unref (gst_harness_pull_event (h));
/* hop over 3 packets, and push buffer 4 (gap of 3) */
fail_unless_equals_int (GST_FLOW_OK,
gst_harness_push (h, generate_test_buffer_full (4 * TEST_BUF_DURATION,
4 + seq_offset, 4 * TEST_RTP_TS_DURATION)));
/* the jitterbuffer should be waiting for the timeout of a "large gap timer"
* for buffer 1 and 2 */
gst_test_clock_wait_for_next_pending_id (testclock, &id);
fail_unless_equals_uint64 (1 * TEST_BUF_DURATION +
jb_latency_ms * GST_MSECOND, gst_clock_id_get_time (id));
gst_clock_id_unref (id);
/* now buffer 1 sneaks in before the lost event for buffer 1 and 2 is
* processed */
fail_unless_equals_int (GST_FLOW_OK,
gst_harness_push (h,
generate_test_buffer_full (late_buffer * TEST_BUF_DURATION,
late_buffer + seq_offset, late_buffer * TEST_RTP_TS_DURATION)));
/* time out for lost packets 1 and 2 (one event, double duration) */
fail_unless (gst_harness_crank_single_clock_wait (h));
verify_lost_event (h, 1 + seq_offset, 1 * TEST_BUF_DURATION,
2 * TEST_BUF_DURATION);
/* time out for lost packets 3 */
fail_unless (gst_harness_crank_single_clock_wait (h));
verify_lost_event (h, 3 + seq_offset, 3 * TEST_BUF_DURATION,
1 * TEST_BUF_DURATION);
/* buffer 4 is pushed as normal */
buffer = gst_harness_pull (h);
fail_unless_equals_int ((4 + seq_offset) & 0xffff, get_rtp_seq_num (buffer));
gst_buffer_unref (buffer);
/* we have lost 3, and one of them arrived eventually, but too late */
fail_unless (verify_jb_stats (h->element,
gst_structure_new ("application/x-rtp-jitterbuffer-stats",
"num-pushed", G_TYPE_UINT64, (guint64) 2,
"num-lost", G_TYPE_UINT64, (guint64) 3,
"num-late", G_TYPE_UINT64, (guint64) 1, NULL)));
gst_object_unref (testclock);
gst_harness_teardown (h);
}
GST_END_TEST;
GST_START_TEST (test_performance)
{
GstHarness *h =
gst_harness_new_parse
("rtpjitterbuffer do-lost=1 do-retransmission=1 latency=1000");
GTimer *timer = g_timer_new ();
const gdouble test_duration = 2.0;
guint buffers_pushed = 0;
guint buffers_received;
gst_harness_set_src_caps (h, generate_caps ());
gst_harness_use_systemclock (h);
while (g_timer_elapsed (timer, NULL) < test_duration) {
/* Simulate 1ms packets */
guint n = buffers_pushed * 2; // every packet also produces a gap
guint16 seqnum = n & 0xffff;
guint32 rtp_ts = n * 8;
GstClockTime dts = n * GST_MSECOND;
gst_harness_push (h, generate_test_buffer_full (dts, seqnum, rtp_ts));
buffers_pushed++;
g_usleep (G_USEC_PER_SEC / 10000);
}
g_timer_destroy (timer);
buffers_received = gst_harness_buffers_received (h);
GST_INFO ("Pushed %d, received %d (%.1f%%)", buffers_pushed, buffers_received,
100.0 * buffers_received / buffers_pushed);
gst_harness_teardown (h);
}
GST_END_TEST;
static gpointer
generate_harness_buffer (gpointer data)
{
GstHarness *h = data;
guint i;
for (i = 32766; i < 41000; i++)
gst_harness_push (h, generate_test_buffer (1000 + i));
return NULL;
}
GST_START_TEST (test_fill_queue)
{
GstHarness *h = gst_harness_new ("rtpjitterbuffer");
const gint num_consecutive = 40000;
gint i;
GstSegment segment;
GThread *t;
GstBuffer *buf;
gst_segment_init (&segment, GST_FORMAT_TIME);
gst_harness_set_src_caps (h, generate_caps ());
gst_harness_play (h);
gst_harness_push (h, generate_test_buffer (1000));
gst_harness_push (h, generate_test_buffer (1002));
for (i = 3; i < 32766; i++)
gst_harness_push (h, generate_test_buffer (1000 + i));
t = g_thread_new ("fill-queue-test-push", generate_harness_buffer, h);
/* Just give a chance to the thread to start and to try to push one packet */
g_usleep (100 * 1000);
fail_unless (gst_harness_crank_single_clock_wait (h));
buf = gst_harness_pull (h);
fail_unless_equals_int (1000, get_rtp_seq_num (buf));
gst_buffer_unref (buf);
/* Gap at 1001 here */
fail_unless (gst_harness_crank_single_clock_wait (h));
buf = gst_harness_pull (h);
fail_unless_equals_int (1002, get_rtp_seq_num (buf));
gst_buffer_unref (buf);
for (i = 3; i < num_consecutive; i++) {
GstBuffer *buf = gst_harness_pull (h);
fail_unless_equals_int (1000 + i, get_rtp_seq_num (buf));
gst_buffer_unref (buf);
}
g_thread_join (t);
gst_harness_teardown (h);
}
GST_END_TEST;
static Suite *
rtpjitterbuffer_suite (void)
{
Suite *s = suite_create ("rtpjitterbuffer");
TCase *tc_chain = tcase_create ("general");
suite_add_tcase (s, tc_chain);
tcase_add_test (tc_chain, test_push_forward_seq);
tcase_add_test (tc_chain, test_push_backward_seq);
tcase_add_test (tc_chain, test_push_unordered);
tcase_add_test (tc_chain, test_push_eos);
tcase_add_test (tc_chain, test_basetime);
tcase_add_test (tc_chain, test_clear_pt_map);
tcase_add_test (tc_chain, test_lost_event);
tcase_add_test (tc_chain, test_only_one_lost_event_on_large_gaps);
tcase_add_test (tc_chain, test_two_lost_one_arrives_in_time);
tcase_add_test (tc_chain, test_late_packets_still_makes_lost_events);
tcase_add_test (tc_chain, test_lost_event_uses_pts);
tcase_add_test (tc_chain, test_lost_event_with_backwards_rtptime);
tcase_add_test (tc_chain, test_all_packets_are_timestamped_zero);
tcase_add_loop_test (tc_chain, test_num_late_when_considered_lost_arrives, 0,
2);
tcase_add_test (tc_chain, test_reorder_of_non_equidistant_packets);
tcase_add_test (tc_chain,
test_loss_equidistant_spacing_with_parameter_packets);
tcase_add_test (tc_chain, test_rtx_expected_next);
tcase_add_test (tc_chain, test_rtx_two_missing);
tcase_add_test (tc_chain, test_rtx_buffer_arrives_just_in_time);
tcase_add_test (tc_chain, test_rtx_buffer_arrives_too_late);
tcase_add_test (tc_chain, test_rtx_original_buffer_does_not_update_rtx_stats);
tcase_add_test (tc_chain, test_rtx_duplicate_packet_updates_rtx_stats);
tcase_add_test (tc_chain,
test_rtx_buffer_arrives_after_lost_updates_rtx_stats);
tcase_add_test (tc_chain, test_rtx_rtt_larger_than_retry_timeout);
tcase_add_test (tc_chain, test_rtx_no_request_if_time_past_retry_period);
tcase_add_test (tc_chain, test_rtx_same_delay_and_retry_timeout);
tcase_add_test (tc_chain, test_rtx_with_backwards_rtptime);
tcase_add_test (tc_chain, test_rtx_timer_reuse);
tcase_add_test (tc_chain, test_deadline_ts_offset);
tcase_add_test (tc_chain, test_push_big_gap);
tcase_add_test (tc_chain, test_fill_queue);
tcase_add_loop_test (tc_chain,
test_considered_lost_packet_in_large_gap_arrives, 0,
G_N_ELEMENTS (test_considered_lost_packet_in_large_gap_arrives_input));
tcase_add_test (tc_chain, test_performance);
return s;
}
GST_CHECK_MAIN (rtpjitterbuffer);
Reference in a new issue View git blame Copy permalink