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gstreamer/tests/check/elements/rtprtx.c
George Kiagiadakis 016e1562a6 tests: rtprtx::test_rtxreceive_data_reconstruction: remove useless code for triggering retransmission 
There is no need anymore to push yet another buffer in rtxsend
in order to trigger the previously requested retransmissions
to actually happen.
2014-01-21 15:00:54 +01:00

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/* GStreamer
*
* Copyright (C) 2013 Collabora Ltd.
* @author Julien Isorce <julien.isorce@collabora.co.uk>
*
* 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/gstconsistencychecker.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 *srcpad, *sinkpad;
/* 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, " \
"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")
);
static void
setup_rtprtx (GstElement * rtprtxsend, GstElement * rtprtxreceive,
gint num_buffers)
{
GstBuffer *buffer;
GstPad *sendsrcpad;
GstPad *receivesinkpad;
gboolean ret = FALSE;
/* 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);
gint i;
srcpad = gst_check_setup_src_pad (rtprtxsend, &srctemplate);
sendsrcpad = gst_element_get_static_pad (rtprtxsend, "src");
ret = gst_pad_set_active (srcpad, TRUE);
fail_if (ret == FALSE);
sinkpad = gst_check_setup_sink_pad (rtprtxreceive, &sinktemplate);
receivesinkpad = gst_element_get_static_pad (rtprtxreceive, "sink");
ret = gst_pad_set_active (sinkpad, TRUE);
fail_if (ret == FALSE);
fail_if (gst_pad_link (sendsrcpad, receivesinkpad) != GST_PAD_LINK_OK);
ret = gst_pad_set_active (sendsrcpad, TRUE);
fail_if (ret == FALSE);
ret = gst_pad_set_active (receivesinkpad, TRUE);
fail_if (ret == FALSE);
gst_object_unref (sendsrcpad);
gst_object_unref (receivesinkpad);
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_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;
}
}
static GstStateChangeReturn
start_rtprtx (GstElement * element)
{
GstStateChangeReturn ret;
ret = gst_element_set_state (element, GST_STATE_PLAYING);
ck_assert_int_ne (ret, GST_STATE_CHANGE_FAILURE);
ret = gst_element_get_state (element, NULL, NULL, GST_CLOCK_TIME_NONE);
ck_assert_int_ne (ret, GST_STATE_CHANGE_FAILURE);
return ret;
}
static void
cleanup_rtprtx (GstElement * rtprtxsend, GstElement * rtprtxreceive)
{
GST_DEBUG ("cleanup_rtprtx");
g_list_free (inbuffers);
inbuffers = NULL;
gst_pad_set_active (srcpad, FALSE);
gst_check_teardown_src_pad (rtprtxsend);
gst_check_teardown_element (rtprtxsend);
gst_pad_set_active (sinkpad, FALSE);
gst_check_teardown_sink_pad (rtprtxreceive);
gst_check_teardown_element (rtprtxreceive);
}
static void
check_rtprtx_results (GstElement * rtprtxsend, GstElement * rtprtxreceive,
gint num_buffers)
{
guint nbrtxrequests = 0;
guint nbrtxpackets = 0;
g_object_get (G_OBJECT (rtprtxsend), "num-rtx-requests", &nbrtxrequests,
NULL);
fail_unless_equals_int (nbrtxrequests, 3);
g_object_get (G_OBJECT (rtprtxsend), "num-rtx-packets", &nbrtxpackets, NULL);
fail_unless_equals_int (nbrtxpackets, 3);
g_object_get (G_OBJECT (rtprtxreceive), "num-rtx-requests", &nbrtxrequests,
NULL);
fail_unless_equals_int (nbrtxrequests, 3);
g_object_get (G_OBJECT (rtprtxreceive), "num-rtx-packets", &nbrtxpackets,
NULL);
fail_unless_equals_int (nbrtxpackets, 3);
g_object_get (G_OBJECT (rtprtxreceive), "num-rtx-assoc-packets",
&nbrtxpackets, NULL);
fail_unless_equals_int (nbrtxpackets, 3);
}
GST_START_TEST (test_push_forward_seq)
{
GstElement *rtprtxsend;
GstElement *rtprtxreceive;
const guint num_buffers = 4;
GList *node;
gint i = 0;
GstCaps *caps = NULL;
GstStructure *pt_map;
rtprtxsend = gst_check_setup_element ("rtprtxsend");
rtprtxreceive = gst_check_setup_element ("rtprtxreceive");
setup_rtprtx (rtprtxsend, rtprtxreceive, num_buffers);
GST_DEBUG ("setup_rtprtx");
fail_unless (start_rtprtx (rtprtxsend)
== GST_STATE_CHANGE_SUCCESS, "could not set to playing");
fail_unless (start_rtprtx (rtprtxreceive)
== GST_STATE_CHANGE_SUCCESS, "could not set to playing");
caps = gst_caps_from_string (RTP_CAPS_STRING);
gst_check_setup_events (srcpad, rtprtxsend, caps, GST_FORMAT_TIME);
gst_caps_unref (caps);
pt_map = gst_structure_new ("application/x-rtp-pt-map",
"0", G_TYPE_UINT, 97, NULL);
g_object_set (rtprtxsend, "payload-type-map", pt_map, NULL);
g_object_set (rtprtxreceive, "payload-type-map", pt_map, NULL);
gst_structure_free (pt_map);
/* push buffers: 0,1,2, */
for (node = inbuffers; node; node = g_list_next (node)) {
GstEvent *event = NULL;
GstRTPBuffer rtp = GST_RTP_BUFFER_INIT;
GstBuffer *buffer = (GstBuffer *) node->data;
GList *last_out_buffer;
guint64 end_time;
gboolean res;
gst_buffer_ref (buffer);
fail_unless_equals_int (gst_pad_push (srcpad, buffer), GST_FLOW_OK);
if (i < 3) {
gst_rtp_buffer_map (buffer, GST_MAP_READ, &rtp);
event = gst_event_new_custom (GST_EVENT_CUSTOM_UPSTREAM,
gst_structure_new ("GstRTPRetransmissionRequest",
"seqnum", G_TYPE_UINT, (guint) gst_rtp_buffer_get_seq (&rtp),
"ssrc", G_TYPE_UINT, (guint) gst_rtp_buffer_get_ssrc (&rtp),
"payload-type", G_TYPE_UINT,
(guint) gst_rtp_buffer_get_payload_type (&rtp), NULL));
gst_rtp_buffer_unmap (&rtp);
/* synchronize with the chain() function of the "sinkpad"
* to make sure that rtxsend has pushed the rtx buffer out
* before continuing */
last_out_buffer = g_list_last (buffers);
g_mutex_lock (&check_mutex);
fail_unless (gst_pad_push_event (sinkpad, event));
end_time = g_get_monotonic_time () + G_TIME_SPAN_SECOND;
do
res = g_cond_wait_until (&check_cond, &check_mutex, end_time);
while (res == TRUE && last_out_buffer == g_list_last (buffers));
g_mutex_unlock (&check_mutex);
}
gst_buffer_unref (buffer);
++i;
}
/* check the buffer list */
check_rtprtx_results (rtprtxsend, rtprtxreceive, num_buffers);
/* cleanup */
cleanup_rtprtx (rtprtxsend, rtprtxreceive);
}
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;
GstStructure *pt_map;
GST_INFO ("starting test");
pt_map = gst_structure_new ("application/x-rtp-pt-map",
"96", G_TYPE_UINT, 99, NULL);
g_object_set (rtppayloader, "pt", 96, NULL);
g_object_set (rtppayloader, "seqnum-offset", 1, NULL);
g_object_set (rtprtxsend, "payload-type-map", pt_map, NULL);
g_object_set (rtprtxreceive, "payload-type-map", pt_map, NULL);
gst_structure_free (pt_map);
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;
GMutex lock_eos;
static gint nb_sources;
static gint nb_eos;
static void
message_received_multiple (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;
guint payload_type_master;
} RTXSendMultipleData;
/* drop some packets */
static GstPadProbeReturn
rtprtxsend_srcpad_probe_multiple (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);
RTXSendMultipleData *rtxdata = (RTXSendMultipleData *) 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 == rtxdata->payload_type_master) {
/* 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;
}
/* make sure every sources has sent all their buffers */
static GstPadProbeReturn
source_srcpad_probe_multiple (GstPad * pad, GstPadProbeInfo * info,
gpointer user_data)
{
GstPadProbeReturn ret = GST_PAD_PROBE_OK;
if (info->type ==
(GST_PAD_PROBE_TYPE_EVENT_DOWNSTREAM | GST_PAD_PROBE_TYPE_PUSH)) {
GstEvent *event = GST_PAD_PROBE_INFO_EVENT (info);
if (GST_EVENT_TYPE (event) == GST_EVENT_EOS) {
g_mutex_lock (&lock_eos);
++nb_eos;
if (nb_eos < nb_sources)
ret = GST_PAD_PROBE_DROP;
g_mutex_unlock (&lock_eos);
}
}
return ret;
}
/* add one branch videotestsrc ! rtpvrawpay ! rtprtxsend ! queue ! funnel. */
static RTXSendMultipleData *
add_sender (GstElement * bin, const gchar * src_name,
const gchar * payloader_name, guint payload_type_master,
guint payload_type_aux)
{
GstElement *src = NULL;
GstElement *rtppayloader = NULL;
GstElement *rtprtxsend = NULL;
GstElement *queue = NULL;
GstElement *funnel = NULL;
GstPad *srcpad = NULL;
gboolean res = FALSE;
RTXSendMultipleData *send_rtxdata = g_slice_new0 (RTXSendMultipleData);
gchar *pt_master;
GstStructure *pt_map;
send_rtxdata->count = 1;
send_rtxdata->nb_packets = 0;
send_rtxdata->drop_every_n_packets = 0;
send_rtxdata->payload_type_master = payload_type_master;
src = gst_element_factory_make (src_name, NULL);
rtppayloader = gst_element_factory_make (payloader_name, NULL);
rtprtxsend = gst_element_factory_make ("rtprtxsend", NULL);
queue = gst_element_factory_make ("queue", NULL);
funnel = gst_bin_get_by_name (GST_BIN (bin), "funnel");
pt_master = g_strdup_printf ("%" G_GUINT32_FORMAT, payload_type_master);
pt_map = gst_structure_new ("application/x-rtp-pt-map",
pt_master, G_TYPE_UINT, payload_type_aux, NULL);
g_free (pt_master);
g_object_set (src, "num-buffers", 25, NULL);
g_object_set (rtppayloader, "pt", payload_type_master, NULL);
g_object_set (rtppayloader, "seqnum-offset", 1, NULL);
g_object_set (rtprtxsend, "payload-type-map", pt_map, NULL);
/* we want that every drop packet be resent fast */
g_object_set (queue, "max-size-buffers", 1, NULL);
g_object_set (queue, "flush-on-eos", FALSE, NULL);
gst_structure_free (pt_map);
gst_bin_add_many (GST_BIN (bin), src, rtppayloader, rtprtxsend, queue, 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, queue);
fail_unless (res == TRUE, NULL);
res = gst_element_link (queue, funnel);
fail_unless (res == TRUE, NULL);
gst_object_unref (funnel);
/* to drop some packets */
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_multiple, send_rtxdata,
NULL);
gst_object_unref (srcpad);
/* to make sure every sources has sent all their buffers */
srcpad = gst_element_get_static_pad (queue, "src");
gst_pad_add_probe (srcpad,
(GST_PAD_PROBE_TYPE_EVENT_DOWNSTREAM | GST_PAD_PROBE_TYPE_PUSH),
(GstPadProbeCallback) source_srcpad_probe_multiple, NULL, NULL);
gst_object_unref (srcpad);
++nb_sources;
return send_rtxdata;
}
typedef struct
{
GHashTable *ssrc_to_nb_packets_map;
GHashTable *ssrc_to_seqnum_offset_map;
guint seqnum_offset;
} RTXReceiveMultipleData;
static GstPadProbeReturn
rtprtxreceive_srcpad_probe_multiple (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);
RTXReceiveMultipleData *rtxdata = (RTXReceiveMultipleData *) user_data;
GstRTPBuffer rtp = GST_RTP_BUFFER_INIT;
guint ssrc = 0;
guint seqnum = 0;
gpointer seqnum_prev = 0;
guint nb_packets = 0;
gst_rtp_buffer_map (buffer, GST_MAP_READ, &rtp);
ssrc = gst_rtp_buffer_get_ssrc (&rtp);
seqnum = gst_rtp_buffer_get_seq (&rtp);
if (!g_hash_table_lookup_extended (rtxdata->ssrc_to_seqnum_offset_map,
GUINT_TO_POINTER (ssrc), NULL, &seqnum_prev)) {
/*In our test we take care to never drop the first buffer */
g_hash_table_insert (rtxdata->ssrc_to_seqnum_offset_map,
GUINT_TO_POINTER (ssrc), GUINT_TO_POINTER (seqnum));
g_hash_table_insert (rtxdata->ssrc_to_nb_packets_map,
GUINT_TO_POINTER (ssrc), GUINT_TO_POINTER (1));
return GST_PAD_PROBE_OK;
}
/* check if there is a dropped packet
* (in our test every packet arrived in increasing order) */
if (seqnum > GPOINTER_TO_UINT (seqnum_prev) + rtxdata->seqnum_offset) {
GstPad *peerpad = gst_pad_get_peer (pad);
guint i = 0;
/* ask retransmission of missing packets */
for (i = GPOINTER_TO_UINT (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);
g_hash_table_insert (rtxdata->ssrc_to_seqnum_offset_map,
GUINT_TO_POINTER (ssrc), GUINT_TO_POINTER (seqnum));
} else if (seqnum ==
GPOINTER_TO_UINT (seqnum_prev) + rtxdata->seqnum_offset) {
/* also update previous seqnum in this case */
g_hash_table_insert (rtxdata->ssrc_to_seqnum_offset_map,
GUINT_TO_POINTER (ssrc), GUINT_TO_POINTER (seqnum));
} else {
/* receive retransmited packet */
}
gst_rtp_buffer_unmap (&rtp);
nb_packets =
GPOINTER_TO_UINT (g_hash_table_lookup (rtxdata->ssrc_to_nb_packets_map,
GUINT_TO_POINTER (ssrc)));
g_hash_table_insert (rtxdata->ssrc_to_nb_packets_map,
GUINT_TO_POINTER (ssrc), GUINT_TO_POINTER (++nb_packets));
}
return GST_PAD_PROBE_OK;
}
static void
reset_rtx_send_data (RTXSendMultipleData * send_rtxdata, gpointer data)
{
send_rtxdata->count = 1;
send_rtxdata->nb_packets = 0;
send_rtxdata->drop_every_n_packets = *(guint *) data;
}
/* compute number of all packets sent by all sender */
static void
compute_total_packets_sent (RTXSendMultipleData * send_rtxdata, gpointer data)
{
guint *sum = (guint *) data;
*sum += send_rtxdata->nb_packets;
}
/* compute number of all packets received by rtprtxreceive::src pad */
static void
compute_total_packets_received (gpointer key, gpointer value, gpointer data)
{
guint *sum = (guint *) data;
*sum += GPOINTER_TO_UINT (value);
}
static void
start_test_drop_multiple_and_check_results (GstElement * bin,
GList * send_rtxdata_list, RTXReceiveMultipleData * receive_rtxdata,
guint drop_every_n_packets)
{
GstStateChangeReturn state_res = GST_STATE_CHANGE_FAILURE;
GstElement *rtprtxreceive =
gst_bin_get_by_name (GST_BIN (bin), "rtprtxreceive");
guint sum_all_packets_sent = 0;
guint sum_rtx_packets_sent = 0;
guint sum_all_packets_received = 0;
guint sum_rtx_packets_received = 0;
guint sum_rtx_assoc_packets_received = 0;
guint sum_rtx_dropped_packets_received = 0;
gdouble error_sent_recv = 0;
GstIterator *itr_elements = NULL;
gboolean done = FALSE;
GValue item = { 0 };
GstElement *element = NULL;
gchar *name = NULL;
GST_INFO ("starting test");
g_hash_table_remove_all (receive_rtxdata->ssrc_to_nb_packets_map);
g_hash_table_remove_all (receive_rtxdata->ssrc_to_seqnum_offset_map);
g_list_foreach (send_rtxdata_list, (GFunc) reset_rtx_send_data,
&drop_every_n_packets);
/* run pipeline */
state_res = gst_element_set_state (bin, GST_STATE_PLAYING);
ck_assert_int_ne (state_res, GST_STATE_CHANGE_FAILURE);
state_res = gst_element_get_state (bin, NULL, NULL, GST_CLOCK_TIME_NONE);
ck_assert_int_ne (state_res, GST_STATE_CHANGE_FAILURE);
GST_INFO ("running main loop");
g_main_loop_run (main_loop);
/* check results */
itr_elements = gst_bin_iterate_elements (GST_BIN (bin));
done = FALSE;
while (!done) {
switch (gst_iterator_next (itr_elements, &item)) {
case GST_ITERATOR_OK:
element = GST_ELEMENT (g_value_get_object (&item));
name = gst_element_get_name (element);
if (g_str_has_prefix (name, "rtprtxsend") > 0) {
guint nb_packets = 0;
g_object_get (G_OBJECT (element), "num-rtx-packets", &nb_packets,
NULL);
sum_rtx_packets_sent += nb_packets;
}
g_free (name);
g_value_reset (&item);
break;
case GST_ITERATOR_RESYNC:
gst_iterator_resync (itr_elements);
break;
case GST_ITERATOR_ERROR:
done = TRUE;
break;
case GST_ITERATOR_DONE:
done = TRUE;
break;
}
}
g_value_unset (&item);
gst_iterator_free (itr_elements);
/* compute number of all packets sent by all sender */
g_list_foreach (send_rtxdata_list, (GFunc) compute_total_packets_sent,
&sum_all_packets_sent);
/* compute number of all packets received by rtprtxreceive::src pad */
g_hash_table_foreach (receive_rtxdata->ssrc_to_nb_packets_map,
compute_total_packets_received, (gpointer) & sum_all_packets_received);
/* check that we sent as many packets as received */
/* when eos is received by sources we cannot ensure that every packets
* will be received by sinks (maybe queue flush ?)
*/
fail_if (sum_all_packets_sent < sum_all_packets_received);
/* some packet are not received, I still have to figure out why
* but I suspect it comes from pipeline setup/shutdown
*/
if (sum_all_packets_sent != sum_all_packets_received) {
error_sent_recv =
1 - sum_all_packets_received / (gdouble) sum_all_packets_sent;
fail_if (error_sent_recv > 0.30);
/* it should be 0% */
}
/* retrieve number of retransmit packets received by rtprtxreceive */
g_object_get (G_OBJECT (rtprtxreceive), "num-rtx-packets",
&sum_rtx_packets_received, NULL);
/* some of rtx packet are not received because the receiver avoids
* collision (= requests that have the same seqnum)
*/
fail_if (sum_rtx_packets_sent < sum_rtx_packets_received);
g_object_get (G_OBJECT (rtprtxreceive), "num-rtx-assoc-packets",
&sum_rtx_assoc_packets_received, NULL);
sum_rtx_dropped_packets_received =
sum_rtx_packets_received - sum_rtx_assoc_packets_received;
fail_unless_equals_int (sum_rtx_packets_sent,
sum_rtx_assoc_packets_received + sum_rtx_dropped_packets_received);
gst_object_unref (rtprtxreceive);
state_res = gst_element_set_state (bin, GST_STATE_NULL);
ck_assert_int_ne (state_res, GST_STATE_CHANGE_FAILURE);
}
static void
free_rtx_send_data (gpointer data)
{
g_slice_free (RTXSendMultipleData, data);
}
/* This test build the pipeline funnel name=funnel
* videotestsrc ! rtpvrawpay ! rtprtxsend ! queue ! funnel.
* videotestsrc ! rtpvrawpay ! rtprtxsend ! queue ! funnel.
* N
* funnel. ! rtprtxreceive ! fakesink
* and drop some buffer just after each rtprtxsend
* 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_multiple_sender)
{
GstElement *bin, *funnel, *rtprtxreceive, *sink;
GstBus *bus;
gboolean res;
GstPad *srcpad;
guint drop_every_n_packets = 0;
GList *send_rtxdata_list = NULL;
RTXReceiveMultipleData receive_rtxdata;
GstStructure *pt_map;
GST_INFO ("preparing test");
receive_rtxdata.ssrc_to_nb_packets_map =
g_hash_table_new (g_direct_hash, g_direct_equal);
receive_rtxdata.ssrc_to_seqnum_offset_map =
g_hash_table_new (g_direct_hash, g_direct_equal);
receive_rtxdata.seqnum_offset = 1;
/* build pipeline */
bin = gst_pipeline_new ("pipeline");
bus = gst_element_get_bus (bin);
gst_bus_add_signal_watch_full (bus, G_PRIORITY_HIGH);
funnel = gst_element_factory_make ("funnel", "funnel");
rtprtxreceive = gst_element_factory_make ("rtprtxreceive", "rtprtxreceive");
sink = gst_element_factory_make ("fakesink", "sink");
g_object_set (sink, "sync", TRUE, NULL);
g_object_set (sink, "qos", FALSE, NULL);
gst_bin_add_many (GST_BIN (bin), funnel, rtprtxreceive, sink, NULL);
nb_sources = 0;
g_mutex_init (&lock_eos);
send_rtxdata_list =
g_list_append (send_rtxdata_list, add_sender (bin, "videotestsrc",
"rtpvrawpay", 96, 121));
send_rtxdata_list =
g_list_append (send_rtxdata_list, add_sender (bin, "videotestsrc",
"rtpvrawpay", 97, 122));
send_rtxdata_list =
g_list_append (send_rtxdata_list, add_sender (bin, "videotestsrc",
"rtpvrawpay", 98, 123));
send_rtxdata_list =
g_list_append (send_rtxdata_list, add_sender (bin, "videotestsrc",
"rtpvrawpay", 99, 124));
pt_map = gst_structure_new ("application/x-rtp-pt-map",
"96", G_TYPE_UINT, 121, "97", G_TYPE_UINT, 122,
"98", G_TYPE_UINT, 123, "99", G_TYPE_UINT, 124, NULL);
g_object_set (rtprtxreceive, "payload-type-map", pt_map, NULL);
gst_structure_free (pt_map);
res = gst_element_link (funnel, rtprtxreceive);
fail_unless (res == TRUE, NULL);
res = gst_element_link (rtprtxreceive, sink);
fail_unless (res == TRUE, NULL);
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_multiple,
&receive_rtxdata, NULL);
gst_object_unref (srcpad);
main_loop = g_main_loop_new (NULL, FALSE);
g_signal_connect (bus, "message::error",
(GCallback) message_received_multiple, bin);
g_signal_connect (bus, "message::warning",
(GCallback) message_received_multiple, bin);
g_signal_connect (bus, "message::eos", (GCallback) message_received_multiple,
bin);
for (drop_every_n_packets = 2; drop_every_n_packets < 10;
drop_every_n_packets++) {
nb_eos = 0;
start_test_drop_multiple_and_check_results (bin, send_rtxdata_list,
&receive_rtxdata, drop_every_n_packets);
}
/* cleanup */
g_main_loop_unref (main_loop);
g_list_free_full (send_rtxdata_list, free_rtx_send_data);
g_hash_table_destroy (receive_rtxdata.ssrc_to_nb_packets_map);
g_hash_table_destroy (receive_rtxdata.ssrc_to_seqnum_offset_map);
gst_bus_remove_signal_watch (bus);
gst_object_unref (bus);
gst_object_unref (bin);
g_mutex_clear (&lock_eos);
}
GST_END_TEST;
struct GenerateTestBuffersData
{
GstElement *src, *capsfilter, *payloader, *sink;
GMutex mutex;
GCond cond;
GList *buffers;
gint num_buffers;
guint last_seqnum;
};
static void
fakesink_handoff (GstElement * sink, GstBuffer * buf, GstPad * pad,
gpointer user_data)
{
struct GenerateTestBuffersData *data = user_data;
g_mutex_lock (&data->mutex);
if (data->num_buffers > 0)
data->buffers = g_list_append (data->buffers, gst_buffer_ref (buf));
/* if we have collected enough buffers, unblock the main thread to stop */
if (--data->num_buffers <= 0)
g_cond_signal (&data->cond);
if (data->num_buffers == 0)
g_object_get (data->payloader, "seqnum", &data->last_seqnum, NULL);
g_mutex_unlock (&data->mutex);
}
static GList *
generate_test_buffers (const gint num_buffers, guint ssrc, guint * payload_type)
{
GstElement *bin;
GstCaps *videotestsrc_caps;
gboolean res;
struct GenerateTestBuffersData data;
fail_unless (num_buffers > 0);
g_mutex_init (&data.mutex);
g_cond_init (&data.cond);
data.buffers = NULL;
data.num_buffers = num_buffers;
bin = gst_pipeline_new (NULL);
data.src = gst_element_factory_make ("videotestsrc", NULL);
data.capsfilter = gst_element_factory_make ("capsfilter", NULL);
data.payloader = gst_element_factory_make ("rtpvrawpay", NULL);
data.sink = gst_element_factory_make ("fakesink", NULL);
/* small frame size will cause vrawpay to generate exactly one rtp packet
* per video frame, which we need for the max-size-time test */
videotestsrc_caps =
gst_caps_from_string
("video/x-raw,format=I420,width=10,height=10,framerate=30/1");
g_object_set (data.src, "do-timestamp", TRUE, NULL);
g_object_set (data.capsfilter, "caps", videotestsrc_caps, NULL);
g_object_set (data.payloader, "seqnum-offset", 1, "ssrc", ssrc, NULL);
g_object_set (data.sink, "signal-handoffs", TRUE, NULL);
g_signal_connect (data.sink, "handoff", (GCallback) fakesink_handoff, &data);
gst_caps_unref (videotestsrc_caps);
gst_bin_add_many (GST_BIN (bin), data.src, data.capsfilter, data.payloader,
data.sink, NULL);
res = gst_element_link_many (data.src, data.capsfilter, data.payloader,
data.sink, NULL);
fail_unless_equals_int (res, TRUE);
g_mutex_lock (&data.mutex);
ASSERT_SET_STATE (bin, GST_STATE_PLAYING, GST_STATE_CHANGE_ASYNC);
while (data.num_buffers > 0)
g_cond_wait (&data.cond, &data.mutex);
g_mutex_unlock (&data.mutex);
g_object_get (data.payloader, "pt", payload_type, NULL);
ASSERT_SET_STATE (bin, GST_STATE_NULL, GST_STATE_CHANGE_SUCCESS);
fail_unless_equals_int (g_list_length (data.buffers), num_buffers);
fail_unless_equals_int (num_buffers, data.last_seqnum);
g_mutex_clear (&data.mutex);
g_cond_clear (&data.cond);
gst_object_unref (bin);
return data.buffers;
}
static GstEvent *
create_rtx_event (guint seqnum, guint ssrc, guint payload_type)
{
return gst_event_new_custom (GST_EVENT_CUSTOM_UPSTREAM,
gst_structure_new ("GstRTPRetransmissionRequest",
"seqnum", G_TYPE_UINT, seqnum,
"ssrc", G_TYPE_UINT, ssrc,
"payload-type", G_TYPE_UINT, payload_type, NULL));
}
static void
test_rtxsender_packet_retention (gboolean test_with_time)
{
const gint num_buffers = test_with_time ? 30 : 10;
const gint half_buffers = num_buffers / 2;
const guint ssrc = 1234567;
const guint rtx_ssrc = 7654321;
const guint rtx_payload_type = 99;
GstStructure *pt_map;
GstStructure *ssrc_map;
GList *in_buffers, *node;
guint payload_type;
GstElement *rtxsend;
GstPad *srcpad, *sinkpad;
GstCaps *caps;
GstRTPBuffer rtp = GST_RTP_BUFFER_INIT;
gint i, j;
gboolean res;
/* generate test data */
in_buffers = generate_test_buffers (num_buffers, ssrc, &payload_type);
/* clear the global buffers list, which we are going to use later */
gst_check_drop_buffers ();
/* setup element & pads */
rtxsend = gst_check_setup_element ("rtprtxsend");
pt_map = gst_structure_new ("application/x-rtp-pt-map",
"96", G_TYPE_UINT, rtx_payload_type, NULL);
ssrc_map = gst_structure_new ("application/x-rtp-ssrc-map",
"1234567", G_TYPE_UINT, rtx_ssrc, NULL);
/* in both cases we want the rtxsend queue to store 'half_buffers'
* amount of buffers at most. In max-size-packets mode, it's trivial.
* In max-size-time mode, we specify almost half a second, which is
* the equivalent of 15 frames in a 30fps video stream */
g_object_set (rtxsend,
"max-size-packets", test_with_time ? 0 : half_buffers,
"max-size-time", test_with_time ? 499 : 0,
"payload-type-map", pt_map, "ssrc-map", ssrc_map, NULL);
gst_structure_free (pt_map);
gst_structure_free (ssrc_map);
srcpad = gst_check_setup_src_pad (rtxsend, &srctemplate);
fail_unless_equals_int (gst_pad_set_active (srcpad, TRUE), TRUE);
sinkpad = gst_check_setup_sink_pad (rtxsend, &sinktemplate);
fail_unless_equals_int (gst_pad_set_active (sinkpad, TRUE), TRUE);
ASSERT_SET_STATE (rtxsend, GST_STATE_PLAYING, GST_STATE_CHANGE_SUCCESS);
caps = gst_caps_from_string ("application/x-rtp, "
"media = (string)video, payload = (int)96, "
"ssrc = (uint)1234567, clock-rate = (int)90000, "
"encoding-name = (string)RAW");
gst_check_setup_events (srcpad, rtxsend, caps, GST_FORMAT_TIME);
gst_caps_unref (caps);
/* now push all buffers and request retransmission every time for all of them */
node = in_buffers;
for (i = 1; i <= num_buffers; i++) {
GstBuffer *buffer = GST_BUFFER (node->data);
/* verify that the original packets are correct */
res = gst_rtp_buffer_map (buffer, GST_MAP_READ, &rtp);
fail_unless_equals_int (res, TRUE);
fail_unless_equals_int (gst_rtp_buffer_get_ssrc (&rtp), ssrc);
fail_unless_equals_int (gst_rtp_buffer_get_payload_type (&rtp),
payload_type);
fail_unless_equals_int (gst_rtp_buffer_get_seq (&rtp), i);
gst_rtp_buffer_unmap (&rtp);
/* retransmit all the previous ones */
for (j = 1; j < i; j++) {
/* synchronize with the chain() function of the "sinkpad"
* to make sure that rtxsend has pushed the rtx buffer out
* before continuing */
GList *last_out_buffer = g_list_last (buffers);
g_mutex_lock (&check_mutex);
fail_unless_equals_int (gst_pad_push_event (sinkpad,
create_rtx_event (j, ssrc, payload_type)), TRUE);
/* wait for the rtx packet only if we expect the element
* to actually retransmit something */
if (j >= MAX (i - half_buffers, 1)) {
guint64 end_time = g_get_monotonic_time () + G_TIME_SPAN_SECOND;
do
res = g_cond_wait_until (&check_cond, &check_mutex, end_time);
while (res == TRUE && last_out_buffer == g_list_last (buffers));
fail_unless_equals_int (res, TRUE);
}
g_mutex_unlock (&check_mutex);
}
/* push this one */
gst_pad_push (srcpad, gst_buffer_ref (buffer));
node = g_list_next (node);
}
/* verify the result. buffers should be in this order (numbers are seqnums):
* 1, 1rtx, 2, 1rtx, 2rtx, 3, ... , 9, 5rtx, 6rtx, 7rtx, 8rtx, 9rtx, 10 */
{
GstRTPBuffer orig_rtp = GST_RTP_BUFFER_INIT;
gint expected_rtx_requests, expected_rtx_packets;
gint real_rtx_requests, real_rtx_packets;
/* verify statistics first */
expected_rtx_packets = half_buffers * half_buffers +
((half_buffers - 1) / 2.0f) * half_buffers;
for (i = 1, expected_rtx_requests = 0; i < num_buffers; i++)
expected_rtx_requests += i;
g_object_get (rtxsend, "num-rtx-requests", &real_rtx_requests,
"num-rtx-packets", &real_rtx_packets, NULL);
fail_unless_equals_int (expected_rtx_requests, real_rtx_requests);
fail_unless_equals_int (expected_rtx_packets, real_rtx_packets);
/* and the number of actual buffers that we were pushed out of rtxsend */
fail_unless_equals_int (g_list_length (buffers),
num_buffers + expected_rtx_packets);
node = buffers;
for (i = 1; i <= num_buffers; i++) {
/* verify the retransmission packets */
for (j = MAX (i - half_buffers, 1); j < i; j++) {
GST_INFO ("checking %d, %d", i, j);
res = gst_rtp_buffer_map (GST_BUFFER (node->data), GST_MAP_READ, &rtp);
fail_unless_equals_int (res, TRUE);
fail_if (gst_rtp_buffer_get_ssrc (&rtp) == ssrc);
fail_unless_equals_int (gst_rtp_buffer_get_ssrc (&rtp), rtx_ssrc);
fail_unless_equals_int (gst_rtp_buffer_get_payload_type (&rtp),
rtx_payload_type);
fail_unless_equals_int (GST_READ_UINT16_BE (gst_rtp_buffer_get_payload (&rtp)), j); /* j == rtx seqnum */
/* open the original packet for this rtx packet and verify timestamps */
res = gst_rtp_buffer_map (GST_BUFFER (g_list_nth_data (in_buffers,
j - 1)), GST_MAP_READ, &orig_rtp);
fail_unless_equals_int (res, TRUE);
fail_unless_equals_int (gst_rtp_buffer_get_timestamp (&orig_rtp),
gst_rtp_buffer_get_timestamp (&rtp));
gst_rtp_buffer_unmap (&orig_rtp);
gst_rtp_buffer_unmap (&rtp);
node = g_list_next (node);
}
/* verify the normal rtp flow packet */
res = gst_rtp_buffer_map (GST_BUFFER (node->data), GST_MAP_READ, &rtp);
fail_unless_equals_int (res, TRUE);
fail_unless_equals_int (gst_rtp_buffer_get_ssrc (&rtp), ssrc);
fail_unless_equals_int (gst_rtp_buffer_get_payload_type (&rtp),
payload_type);
fail_unless_equals_int (gst_rtp_buffer_get_seq (&rtp), i);
gst_rtp_buffer_unmap (&rtp);
node = g_list_next (node);
}
}
g_list_free_full (in_buffers, (GDestroyNotify) gst_buffer_unref);
gst_check_drop_buffers ();
gst_check_teardown_src_pad (rtxsend);
gst_check_teardown_sink_pad (rtxsend);
gst_check_teardown_element (rtxsend);
}
GST_START_TEST (test_rtxsender_max_size_packets)
{
test_rtxsender_packet_retention (FALSE);
}
GST_END_TEST;
GST_START_TEST (test_rtxsender_max_size_time)
{
test_rtxsender_packet_retention (TRUE);
}
GST_END_TEST;
static void
compare_rtp_packets (GstBuffer * a, GstBuffer * b)
{
GstRTPBuffer rtp_a = GST_RTP_BUFFER_INIT;
GstRTPBuffer rtp_b = GST_RTP_BUFFER_INIT;
gst_rtp_buffer_map (a, GST_MAP_READ, &rtp_a);
gst_rtp_buffer_map (b, GST_MAP_READ, &rtp_b);
fail_unless_equals_int (gst_rtp_buffer_get_header_len (&rtp_a),
gst_rtp_buffer_get_header_len (&rtp_b));
fail_unless_equals_int (gst_rtp_buffer_get_version (&rtp_a),
gst_rtp_buffer_get_version (&rtp_b));
fail_unless_equals_int (gst_rtp_buffer_get_ssrc (&rtp_a),
gst_rtp_buffer_get_ssrc (&rtp_b));
fail_unless_equals_int (gst_rtp_buffer_get_seq (&rtp_a),
gst_rtp_buffer_get_seq (&rtp_b));
fail_unless_equals_int (gst_rtp_buffer_get_csrc_count (&rtp_a),
gst_rtp_buffer_get_csrc_count (&rtp_b));
fail_unless_equals_int (gst_rtp_buffer_get_marker (&rtp_a),
gst_rtp_buffer_get_marker (&rtp_b));
fail_unless_equals_int (gst_rtp_buffer_get_payload_type (&rtp_a),
gst_rtp_buffer_get_payload_type (&rtp_b));
fail_unless_equals_int (gst_rtp_buffer_get_timestamp (&rtp_a),
gst_rtp_buffer_get_timestamp (&rtp_b));
fail_unless_equals_int (gst_rtp_buffer_get_extension (&rtp_a),
gst_rtp_buffer_get_extension (&rtp_b));
fail_unless_equals_int (gst_rtp_buffer_get_payload_len (&rtp_a),
gst_rtp_buffer_get_payload_len (&rtp_b));
fail_unless_equals_int (memcmp (gst_rtp_buffer_get_payload (&rtp_a),
gst_rtp_buffer_get_payload (&rtp_b),
gst_rtp_buffer_get_payload_len (&rtp_a)), 0);
gst_rtp_buffer_unmap (&rtp_a);
gst_rtp_buffer_unmap (&rtp_b);
}
GST_START_TEST (test_rtxreceive_data_reconstruction)
{
const guint ssrc = 1234567;
GList *in_buffers;
guint payload_type;
GstElement *rtxsend, *rtxrecv;
GstPad *srcpad, *sinkpad;
GstCaps *caps;
GstBuffer *buffer;
GstStructure *pt_map;
/* generate test data */
in_buffers = generate_test_buffers (1, ssrc, &payload_type);
/* clear the global buffers list, which we are going to use later */
gst_check_drop_buffers ();
/* setup element & pads */
rtxsend = gst_check_setup_element ("rtprtxsend");
rtxrecv = gst_check_setup_element ("rtprtxreceive");
pt_map = gst_structure_new ("application/x-rtp-pt-map",
"96", G_TYPE_UINT, 99, NULL);
g_object_set (rtxsend, "payload-type-map", pt_map, NULL);
g_object_set (rtxrecv, "payload-type-map", pt_map, NULL);
gst_structure_free (pt_map);
fail_unless_equals_int (gst_element_link (rtxsend, rtxrecv), TRUE);
srcpad = gst_check_setup_src_pad (rtxsend, &srctemplate);
fail_unless_equals_int (gst_pad_set_active (srcpad, TRUE), TRUE);
sinkpad = gst_check_setup_sink_pad (rtxrecv, &sinktemplate);
fail_unless_equals_int (gst_pad_set_active (sinkpad, TRUE), TRUE);
ASSERT_SET_STATE (rtxsend, GST_STATE_PLAYING, GST_STATE_CHANGE_SUCCESS);
ASSERT_SET_STATE (rtxrecv, GST_STATE_PLAYING, GST_STATE_CHANGE_SUCCESS);
caps = gst_caps_from_string ("application/x-rtp, "
"media = (string)video, payload = (int)96, "
"ssrc = (uint)1234567, clock-rate = (int)90000, "
"encoding-name = (string)RAW");
gst_check_setup_events (srcpad, rtxsend, caps, GST_FORMAT_TIME);
gst_caps_unref (caps);
/* push buffer */
buffer = gst_buffer_ref (GST_BUFFER (in_buffers->data));
fail_unless_equals_int (gst_pad_push (srcpad, buffer), GST_FLOW_OK);
/* push retransmission request */
{
GList *last_out_buffer;
guint64 end_time;
gboolean res;
/* synchronize with the chain() function of the "sinkpad"
* to make sure that rtxsend has pushed the rtx buffer out
* before continuing */
last_out_buffer = g_list_last (buffers);
g_mutex_lock (&check_mutex);
fail_unless_equals_int (gst_pad_push_event (sinkpad,
create_rtx_event (1, ssrc, payload_type)), TRUE);
end_time = g_get_monotonic_time () + G_TIME_SPAN_SECOND;
do
res = g_cond_wait_until (&check_cond, &check_mutex, end_time);
while (res == TRUE && last_out_buffer == g_list_last (buffers));
fail_unless_equals_int (res, TRUE);
g_mutex_unlock (&check_mutex);
}
/* verify */
fail_unless_equals_int (g_list_length (buffers), 2);
compare_rtp_packets (GST_BUFFER (buffers->data),
GST_BUFFER (buffers->next->data));
/* cleanup */
g_list_free_full (in_buffers, (GDestroyNotify) gst_buffer_unref);
gst_check_drop_buffers ();
gst_check_teardown_src_pad (rtxsend);
gst_check_teardown_sink_pad (rtxrecv);
gst_element_unlink (rtxsend, rtxrecv);
gst_check_teardown_element (rtxsend);
gst_check_teardown_element (rtxrecv);
}
GST_END_TEST;
static Suite *
rtprtx_suite (void)
{
Suite *s = suite_create ("rtprtx");
TCase *tc_chain = tcase_create ("general");
tcase_set_timeout (tc_chain, 10);
suite_add_tcase (s, tc_chain);
tcase_add_test (tc_chain, test_push_forward_seq);
tcase_add_test (tc_chain, test_drop_one_sender);
tcase_add_test (tc_chain, test_drop_multiple_sender);
tcase_add_test (tc_chain, test_rtxsender_max_size_packets);
tcase_add_test (tc_chain, test_rtxsender_max_size_time);
tcase_add_test (tc_chain, test_rtxreceive_data_reconstruction);
return s;
}
GST_CHECK_MAIN (rtprtx);
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