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119 lines
3.3 KiB
C
119 lines
3.3 KiB
C
/* GStreamer
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*
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* Copyright (C) 2020 Seungha Yang <seungha@centricular.com>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*/
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#include <gst/check/gstcheck.h>
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#include <gst/codecparsers/nalutils.h>
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#include <string.h>
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GST_START_TEST (test_nal_writer_init)
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{
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NalWriter nw;
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/* init with invalid params */
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ASSERT_CRITICAL (nal_writer_init (&nw, 0, TRUE));
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ASSERT_CRITICAL (nal_writer_init (&nw, 0, FALSE));
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ASSERT_CRITICAL (nal_writer_init (&nw, 5, TRUE));
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ASSERT_CRITICAL (nal_writer_init (&nw, 5, FALSE));
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nal_writer_init (&nw, 4, FALSE);
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nal_writer_reset (&nw);
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}
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GST_END_TEST;
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GST_START_TEST (test_nal_writer_emulation_preventation)
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{
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NalWriter nw;
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gint i, j;
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static guint8 patterns[][3] = {
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{0x00, 0x00, 0x00},
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{0x00, 0x00, 0x01},
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{0x00, 0x00, 0x02},
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{0x00, 0x00, 0x03},
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};
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static guint8 expected_rst[][4] = {
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{0x00, 0x00, 0x03, 0x00},
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{0x00, 0x00, 0x03, 0x01},
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{0x00, 0x00, 0x03, 0x02},
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{0x00, 0x00, 0x03, 0x03},
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};
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/* Within the NAL unit, the following three-byte sequences shall not occur
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* at any byte-aligned position:
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* – 0x000000
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* – 0x000001
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* – 0x000002
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* Within the NAL unit, any four-byte sequence that starts with 0x000003
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* other than the following sequences shall not occur
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* at any byte-aligned position:
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* – 0x00000300
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* – 0x00000301
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* – 0x00000302
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* – 0x00000303
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*/
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for (i = 0; i < G_N_ELEMENTS (patterns); i++) {
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GstMemory *mem;
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GstMapInfo info;
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nal_writer_init (&nw, 4, FALSE);
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/* forbidden_zero_bit */
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fail_unless (nal_writer_put_bits_uint8 (&nw, 0, 1));
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/* nal_ref_idc, just set zero for test */
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fail_unless (nal_writer_put_bits_uint8 (&nw, 0, 2));
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/* nal_unit_type, unknown h264 nal type */
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fail_unless (nal_writer_put_bits_uint8 (&nw, 0x1f, 5));
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for (j = 0; j < 3; j++)
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fail_unless (nal_writer_put_bits_uint8 (&nw, patterns[i][j], 8));
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mem = nal_writer_reset_and_get_memory (&nw);
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fail_unless (mem != NULL);
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fail_unless (gst_memory_map (mem, &info, GST_MAP_READ));
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/* start code prefix 4 + nalu header 1 + written bytes 3 +
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* emulation prevention byte 1 */
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assert_equals_int (info.size, (4 + 1 + 3 + 1));
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fail_if (memcmp (info.data + 5, expected_rst[i], 4));
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gst_memory_unmap (mem, &info);
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gst_memory_unref (mem);
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}
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}
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GST_END_TEST;
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static Suite *
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nalutils_suite (void)
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{
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Suite *s = suite_create ("H264/H264 Nal Utils");
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TCase *tc_chain = tcase_create ("general");
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suite_add_tcase (s, tc_chain);
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tcase_add_test (tc_chain, test_nal_writer_init);
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tcase_add_test (tc_chain, test_nal_writer_emulation_preventation);
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return s;
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}
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GST_CHECK_MAIN (nalutils);
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