gstreamer/tests/check/elements/rtpst2022-1-fecenc.c

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/* GStreamer
* Copyright (C) <2020> Mathieu Duponchelle <mathieu@centricular.com>
*
* 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/gstharness.h>
#include <gst/rtp/gstrtpbuffer.h>
#include <gst/base/base.h>
typedef struct
{
guint16 seq;
guint16 len;
guint8 E;
guint8 pt;
guint32 mask;
guint32 timestamp;
guint8 N;
guint8 D;
guint8 type;
guint8 index;
guint8 offset;
guint8 NA;
guint8 seq_ext;
guint8 *payload;
guint payload_len;
} Rtp2DFecHeader;
static void
parse_header (Rtp2DFecHeader * fec, guint8 * data, guint len)
{
GstBitReader bits;
fail_unless (len >= 16);
gst_bit_reader_init (&bits, data, len);
fec->seq = gst_bit_reader_get_bits_uint16_unchecked (&bits, 16);
fec->len = gst_bit_reader_get_bits_uint16_unchecked (&bits, 16);
fec->E = gst_bit_reader_get_bits_uint8_unchecked (&bits, 1);
fec->pt = gst_bit_reader_get_bits_uint8_unchecked (&bits, 7);
fec->mask = gst_bit_reader_get_bits_uint32_unchecked (&bits, 24);
fec->timestamp = gst_bit_reader_get_bits_uint32_unchecked (&bits, 32);
fec->N = gst_bit_reader_get_bits_uint8_unchecked (&bits, 1);
fec->D = gst_bit_reader_get_bits_uint8_unchecked (&bits, 1);
fec->type = gst_bit_reader_get_bits_uint8_unchecked (&bits, 3);
fec->index = gst_bit_reader_get_bits_uint8_unchecked (&bits, 3);
fec->offset = gst_bit_reader_get_bits_uint8_unchecked (&bits, 8);
fec->NA = gst_bit_reader_get_bits_uint8_unchecked (&bits, 8);
fec->seq_ext = gst_bit_reader_get_bits_uint8_unchecked (&bits, 8);
fec->payload = data + 16;
fec->payload_len = len - 16;
}
static GstBuffer *
make_media_sample (guint16 seq, guint32 ts, guint8 * payload, guint payload_len)
{
GstBuffer *ret;
GstRTPBuffer rtp = GST_RTP_BUFFER_INIT;
guint8 *data;
ret = gst_rtp_buffer_new_allocate (payload_len, 0, 0);
gst_rtp_buffer_map (ret, GST_MAP_WRITE, &rtp);
gst_rtp_buffer_set_payload_type (&rtp, 33);
gst_rtp_buffer_set_seq (&rtp, seq);
gst_rtp_buffer_set_timestamp (&rtp, ts);
data = gst_rtp_buffer_get_payload (&rtp);
memcpy (data, payload, payload_len);
gst_rtp_buffer_unmap (&rtp);
return ret;
}
static void
pull_and_check (GstHarness * h, guint n_packets, guint16 seq,
guint length_recovery, guint8 pt_recovery, guint32 ts_recovery,
gboolean row, guint8 offset, guint8 NA, guint8 * payload, guint payload_len)
{
GstRTPBuffer rtp = GST_RTP_BUFFER_INIT;
GstBuffer *buffer;
Rtp2DFecHeader fec;
fail_unless_equals_int (gst_harness_buffers_in_queue (h), n_packets);
buffer = gst_harness_pull (h);
fail_unless (gst_rtp_buffer_map (buffer, GST_MAP_READ, &rtp));
parse_header (&fec, gst_rtp_buffer_get_payload (&rtp),
gst_rtp_buffer_get_payload_len (&rtp));
fail_unless_equals_int (fec.seq, seq);
fail_unless_equals_int (fec.pt, pt_recovery);
fail_unless_equals_int (fec.timestamp, ts_recovery);
fail_unless_equals_int (fec.D, row ? 1 : 0);
fail_unless_equals_int (fec.offset, offset);
fail_unless_equals_int (fec.NA, NA);
fail_unless_equals_int (fec.payload_len, payload_len);
fail_unless_equals_int (memcmp (fec.payload, payload, fec.payload_len), 0);
gst_rtp_buffer_unmap (&rtp);
gst_buffer_unref (buffer);
}
GST_START_TEST (test_row)
{
GstHarness *h, *h_fec_1;
guint8 payload;
GstElement *enc = gst_element_factory_make ("rtpst2022-1-fecenc", NULL);
g_object_set (enc, "columns", 3, "enable-column-fec", FALSE, NULL);
h = gst_harness_new_with_element (enc, "sink", "src");
h_fec_1 = gst_harness_new_with_element (h->element, NULL, "fec_1");
gst_harness_set_src_caps_str (h, "application/x-rtp");
payload = 0x37;
gst_harness_push (h, make_media_sample (0, 0, &payload, 1));
payload = 0x28;
gst_harness_push (h, make_media_sample (1, 0, &payload, 1));
payload = 0xff;
gst_harness_push (h, make_media_sample (2, 0, &payload, 1));
payload = 0x37 ^ 0x28 ^ 0xff;
pull_and_check (h_fec_1, 1, 0, 1, 33, 0, TRUE, 1, 3, &payload, 1);
gst_object_unref (enc);
gst_harness_teardown (h);
gst_harness_teardown (h_fec_1);
}
GST_END_TEST;
GST_START_TEST (test_columns)
{
GstHarness *h, *h_fec_0;
guint8 payload;
GstElement *enc = gst_element_factory_make ("rtpst2022-1-fecenc", NULL);
g_object_set (enc, "columns", 3, "rows", 3, "enable-row-fec", FALSE, NULL);
h = gst_harness_new_with_element (enc, "sink", "src");
h_fec_0 = gst_harness_new_with_element (h->element, NULL, "fec_0");
gst_harness_set_src_caps_str (h, "application/x-rtp");
payload = 0x37;
gst_harness_push (h, make_media_sample (0, 0, &payload, 1));
payload = 0x28;
gst_harness_push (h, make_media_sample (1, 0, &payload, 1));
payload = 0xff;
gst_harness_push (h, make_media_sample (2, 0, &payload, 1));
payload = 0xde;
gst_harness_push (h, make_media_sample (3, 0, &payload, 1));
payload = 0xad;
gst_harness_push (h, make_media_sample (4, 0, &payload, 1));
payload = 0xbe;
gst_harness_push (h, make_media_sample (5, 0, &payload, 1));
payload = 0xef;
gst_harness_push (h, make_media_sample (6, 0, &payload, 1));
payload = 0x58;
gst_harness_push (h, make_media_sample (7, 0, &payload, 1));
payload = 0x92;
gst_harness_push (h, make_media_sample (8, 0, &payload, 1));
/* Let's check distribution of the column FEC over the repair window
* We should receive column FEC packets upon pushing buffers with
* seqnums 9, 12 and 15
*/
/* At this point no column FEC should have been put out */
fail_unless_equals_int (gst_harness_buffers_in_queue (h_fec_0), 0);
/* Now push the first buffer in the second 3 x 3 grid, it's at
* this point we expect to receive our first column FEC packet
*/
gst_harness_push (h, make_media_sample (9, 0, &payload, 1));
payload = 0x37 ^ 0xde ^ 0xef;
pull_and_check (h_fec_0, 1, 0, 1, 33, 0, FALSE, 3, 3, &payload, 1);
gst_harness_push (h, make_media_sample (10, 0, &payload, 1));
gst_harness_push (h, make_media_sample (11, 0, &payload, 1));
fail_unless_equals_int (gst_harness_buffers_in_queue (h_fec_0), 0);
gst_harness_push (h, make_media_sample (12, 0, &payload, 1));
payload = 0x28 ^ 0xad ^ 0x58;
pull_and_check (h_fec_0, 1, 1, 1, 33, 0, FALSE, 3, 3, &payload, 1);
gst_harness_push (h, make_media_sample (13, 0, &payload, 1));
gst_harness_push (h, make_media_sample (14, 0, &payload, 1));
fail_unless_equals_int (gst_harness_buffers_in_queue (h_fec_0), 0);
gst_harness_push (h, make_media_sample (15, 0, &payload, 1));
payload = 0xff ^ 0xbe ^ 0x92;
pull_and_check (h_fec_0, 1, 2, 1, 33, 0, FALSE, 3, 3, &payload, 1);
gst_object_unref (enc);
gst_harness_teardown (h);
gst_harness_teardown (h_fec_0);
}
GST_END_TEST;
static Suite *
st2022_1_dec_suite (void)
{
Suite *s = suite_create ("rtpst2022-1-fecdec");
TCase *tc_chain = tcase_create ("general");
suite_add_tcase (s, tc_chain);
tcase_add_test (tc_chain, test_row);
tcase_add_test (tc_chain, test_columns);
return s;
}
GST_CHECK_MAIN (st2022_1_dec)