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test: h264/h265: Add test for four bytes start code initial skip

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This test detects if the parser have skipped too much and dropped meaninful
NALs.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-bad/-/merge_requests/1251>
This commit is contained in:
Nicolas Dufresne 2020-05-07 11:09:23 -04:00
parent fd423c8468
commit 26296646d7
2 changed files with 85 additions and 0 deletions
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41
tests/check/elements/h264parse.c
View file

@ -1148,6 +1148,46 @@ GST_START_TEST (test_parse_sei_closedcaptions)
GST_END_TEST;
GST_START_TEST (test_parse_skip_to_4bytes_sc)
{
GstHarness *h;
GstBuffer *buf1, *buf2;
const guint8 initial_bytes[] = { 0x00, 0x00, 0x00, 0x00, 0x01 };
GstMapInfo map;
h = gst_harness_new ("h264parse");
gst_harness_set_caps_str (h, "video/x-h264, stream-format=byte-stream",
"video/x-h264, stream-format=byte-stream, alignment=nal");
/* padding bytes, four bytes start code. */
buf1 = wrap_buffer (initial_bytes, sizeof (initial_bytes), 100, 0);
/* The second contains the an AUD, starting from NAL identification byte,
* and is followed by SPS, PPS and IDR */
buf2 = composite_buffer (100, 0, 4, h264_aud + 4, sizeof (h264_aud) - 4,
h264_sps, sizeof (h264_sps), h264_pps, sizeof (h264_pps),
h264_idrframe, sizeof (h264_idrframe));
fail_unless_equals_int (gst_harness_push (h, buf1), GST_FLOW_OK);
fail_unless_equals_int (gst_harness_buffers_in_queue (h), 0);
fail_unless_equals_int (gst_harness_push (h, buf2), GST_FLOW_OK);
/* The parser will deliver AUD, SPS, PPS as it now have complete caps */
fail_unless_equals_int (gst_harness_buffers_in_queue (h), 3);
buf1 = gst_harness_pull (h);
gst_buffer_map (buf1, &map, GST_MAP_READ);
fail_unless_equals_int (gst_buffer_get_size (buf1), sizeof (h264_aud));
gst_buffer_unmap (buf1, &map);
gst_buffer_unref (buf1);
gst_harness_teardown (h);
}
GST_END_TEST;
/*
* TODO:
* - Both push- and pull-modes need to be tested
@ -1258,6 +1298,7 @@ main (int argc, char **argv)
suite_add_tcase (s, tc_chain);
tcase_add_test (tc_chain, test_parse_sei_closedcaptions);
tcase_add_test (tc_chain, test_parse_compatible_caps);
tcase_add_test (tc_chain, test_parse_skip_to_4bytes_sc);
nf += gst_check_run_suite (s, "h264parse", __FILE__);
}

44
tests/check/elements/h265parse.c
View file

@ -955,6 +955,48 @@ GST_START_TEST (test_sliced_au_au)
GST_END_TEST;
GST_START_TEST (test_parse_skip_to_4bytes_sc)
{
GstHarness *h;
GstBuffer *buf1, *buf2;
const guint8 initial_bytes[] = { 0x00, 0x00, 0x00, 0x00, 0x01, h265_vps[4] };
GstMapInfo map;
h = gst_harness_new ("h265parse");
gst_harness_set_caps_str (h, "video/x-h265, stream-format=byte-stream",
"video/x-h265, stream-format=byte-stream, alignment=nal");
/* padding bytes, four bytes start code and 1 of the two identification
* bytes. */
buf1 = wrap_buffer (initial_bytes, sizeof (initial_bytes), 100, 0);
/* The second contains the an VPS, starting from second NAL identification
* byte and is followed by an SPS, IDR to ensure that the NAL end can be
* found */
buf2 = composite_buffer (100, 0, 4, h265_vps + 5, sizeof (h265_vps) - 5,
h265_sps, sizeof (h265_sps), h265_pps, sizeof (h265_pps),
h265_idr, sizeof (h265_idr));
fail_unless_equals_int (gst_harness_push (h, buf1), GST_FLOW_OK);
fail_unless_equals_int (gst_harness_buffers_in_queue (h), 0);
fail_unless_equals_int (gst_harness_push (h, buf2), GST_FLOW_OK);
/* The parser will deliver VPS, SPS, PPS as it now have complete cpas */
fail_unless_equals_int (gst_harness_buffers_in_queue (h), 3);
buf1 = gst_harness_pull (h);
gst_buffer_map (buf1, &map, GST_MAP_READ);
fail_unless_equals_int (gst_buffer_get_size (buf1), sizeof (h265_vps));
gst_buffer_unmap (buf1, &map);
gst_buffer_unref (buf1);
gst_harness_teardown (h);
}
GST_END_TEST;
/* nal->au has latency, but EOS should force the last AU out */
GST_START_TEST (test_drain)
{
@ -1006,6 +1048,8 @@ h265parse_harnessed_suite (void)
tcase_add_test (tc_chain, test_sliced_nal_au);
tcase_add_test (tc_chain, test_sliced_au_au);
tcase_add_test (tc_chain, test_parse_skip_to_4bytes_sc);
tcase_add_test (tc_chain, test_drain);
return s;